The Ecere SDK - sdk/blob - ecere/src/gfx/drivers/OpenGLDisplayDriver.ec

   1 // We were using PBUFFER for alpha compositing on Linux before, but it does not seem to work, nor be required anymore.
   2 // #define USEPBUFFER
   3
   4 namespace gfx::drivers;
   5
   6 // OpenGL Extensions
   7 #if defined(__unix__) || defined(__APPLE__)
   8
   9 #if !defined(__MINGW32__)
  10    #define GL_GLEXT_PROTOTYPES
  11 #endif
  12
  13 #define pointer _pointer
  14
  15 #ifdef ECERE_MINIGLX
  16
  17 //#include <GL/miniglx.h>
  18
  19 #else
  20
  21    #if !defined(__ANDROID__) && !defined(__EMSCRIPTEN__) && !defined(__ODROID__)
  22
  23       #define property _property
  24       #define new _new
  25       #define class _class
  26
  27       #define Window    X11Window
  28       #define Cursor    X11Cursor
  29       #define Font      X11Font
  30       #define Display   X11Display
  31       #define Time      X11Time
  32       #define KeyCode   X11KeyCode
  33       #define Picture   X11Picture
  34       #define uint _uint
  35
  36       #include <X11/Xlib.h>
  37       #include <X11/Xutil.h>
  38       #include <GL/glx.h>
  39       #include <X11/extensions/XShm.h>
  40       #include <sys/ipc.h>
  41       #include <sys/shm.h>
  42       #include <X11/extensions/Xrender.h>
  43       #include <X11/extensions/shape.h>
  44
  45       #undef Window
  46       #undef Cursor
  47       #undef Font
  48       #undef Display
  49       #undef Time
  50       #undef KeyCode
  51       #undef Picture
  52       #undef uint
  53       #undef new
  54       #undef property
  55       #undef class
  56
  57    #endif
  58
  59 #endif
  60
  61 #endif
  62
  63 #if defined(__APPLE__)
  64 #include <OpenGl/gl.h>
  65 #endif
  66
  67 #if defined(__WIN32__) || defined(__unix__) || defined(__APPLE__)
  68
  69 #if defined(__WIN32__)
  70    #define WIN32_LEAN_AND_MEAN
  71    #undef _WIN32_WINNT
  72    #define _WIN32_WINNT 0x0502
  73    #define String Sting_
  74    #include <windows.h>
  75    #undef String
  76 #endif
  77
  78 #if defined(__ANDROID__) || defined(__ODROID__)
  79
  80 #define uint _uint
  81 #define property _property
  82 #define new _new
  83 #define class _class
  84 #define Window    X11Window
  85 #define Cursor    X11Cursor
  86 #define Font      X11Font
  87 #define Display   X11Display
  88 #define Time      X11Time
  89 #define KeyCode   X11KeyCode
  90 #define Picture   X11Picture
  91 #define Bool      X11Bool
  92
  93    #include <GLES/gl.h>
  94    #include <EGL/egl.h>
  95
  96 #undef Bool
  97 #undef Picture
  98 #undef Window
  99 #undef Cursor
 100 #undef Font
 101 #undef Display
 102 #undef Time
 103 #undef KeyCode
 104 #undef uint
 105 #undef new
 106 #undef property
 107 #undef class
 108
 109 #elif defined(__EMSCRIPTEN__)
 110
 111    #define property _property
 112    #define uint _uint
 113
 114    #include <GL/gl.h>
 115
 116    //#include <GLES/gl.h>
 117    //#include <EGL/egl.h>
 118
 119    //#include <GLES2/gl.h>
 120    //#include <EGL/egl.h>
 121
 122    //#include <GLES2/gl2.h>
 123    #include <GL/glfw.h>
 124    #include <emscripten/emscripten.h>
 125
 126    #undef property
 127    #undef uint
 128
 129 #else
 130
 131    #include <GL/gl.h>
 132    #include <GL/glext.h>
 133
 134 #endif
 135
 136 #if defined(__ODROID__) && !defined(_GLES)
 137 #define _GLES
 138 #endif
 139
 140 #if defined(__EMSCRIPTEN__)
 141 #define EM_MODE
 142 // #define _GLES
 143 #endif
 144
 145 //#define EM_MODE
 146
 147 #undef pointer
 148
 149 import "Display"
 150
 151 #if defined(__unix__) || defined(__APPLE__)
 152
 153    #if !defined(__ANDROID__) && !defined(__EMSCRIPTEN__) && !defined(__ODROID__)
 154    import "XInterface"
 155    #endif
 156
 157 #endif
 158
 159 static double nearPlane = 1;
 160
 161 public double glesGetNearPlane()
 162 {
 163    return nearPlane;
 164 }
 165
 166 public void glesSetNearPlane(double value)
 167 {
 168    nearPlane = value;
 169 }
 170
 171 #define glLoadMatrix glLoadMatrixd
 172 #define glMultMatrix glMultMatrixd
 173 #define glGetMatrix  glGetDoublev
 174 #define glTranslate glTranslated
 175 #define glScale glScaled
 176
 177 /*
 178 #define glVertex3v glVertex3dv
 179 #define glNormal3v glNormal3dv
 180 */
 181
 182 /*
 183 //#ifdef VERTEX_FORMAT_DOUBLE
 184
 185 #define glLoadMatrix glLoadMatrixd
 186 #define glMultMatrix glMultMatrixd
 187 #define glGetMatrix  glGetDoublev
 188 #define glVertex3v glVertex3dv
 189 #define glNormal3v glNormal3dv
 190 #define glTranslate glTranslated
 191 #define glScale glScaled
 192 //#define GL_VERTEX_FORMAT   GL_DOUBLE
 193
 194 #else
 195
 196 #define glLoadMatrix glLoadMatrixf
 197 #define glMultMatrix glMultMatrixf
 198 #define glGetMatrix  glGetFloatv
 199 #define glVertex3v glVertex3fv
 200 #define glNormal3v glNormal3fv
 201 #define glTranslate glTranslatef
 202 #define glScale glScalef
 203 //#define GL_VERTEX_FORMAT   GL_FLOAT
 204
 205 #endif
 206 */
 207
 208 #define GL_ARRAY_BUFFER_ARB            0x8892
 209 #define GL_ELEMENT_ARRAY_BUFFER_ARB    0x8893
 210 #define GL_STATIC_DRAW_ARB             0x88E4
 211 #define GL_LIGHT_MODEL_COLOR_CONTROL   0x81F8
 212 #define GL_SEPARATE_SPECULAR_COLOR     0x81FA
 213
 214 #define GL_MULTISAMPLE_ARB             0x809D
 215
 216 #if defined(__WIN32__)
 217
 218    #define WGL_SAMPLE_BUFFERS_ARB              0x2041
 219    #define WGL_SAMPLES_ARB                     0x2042
 220
 221    #define  WGL_WGLEXT_VERSION   1
 222    #define  WGL_FRONT_COLOR_BUFFER_BIT_ARB   0x00000001
 223    #define  WGL_BACK_COLOR_BUFFER_BIT_ARB   0x00000002
 224    #define  WGL_DEPTH_BUFFER_BIT_ARB   0x00000004
 225    #define  WGL_STENCIL_BUFFER_BIT_ARB   0x00000008
 226    #define  WGL_NUMBER_PIXEL_FORMATS_ARB   0x2000
 227    #define  WGL_DRAW_TO_WINDOW_ARB   0x2001
 228    #define  WGL_DRAW_TO_BITMAP_ARB   0x2002
 229    #define  WGL_ACCELERATION_ARB   0x2003
 230    #define  WGL_NEED_PALETTE_ARB   0x2004
 231    #define  WGL_NEED_SYSTEM_PALETTE_ARB   0x2005
 232    #define  WGL_SWAP_LAYER_BUFFERS_ARB   0x2006
 233    #define  WGL_SWAP_METHOD_ARB   0x2007
 234    #define  WGL_NUMBER_OVERLAYS_ARB   0x2008
 235    #define  WGL_NUMBER_UNDERLAYS_ARB   0x2009
 236    #define  WGL_TRANSPARENT_ARB   0x200A
 237    #define  WGL_TRANSPARENT_RED_VALUE_ARB   0x2037
 238    #define  WGL_TRANSPARENT_GREEN_VALUE_ARB   0x2038
 239    #define  WGL_TRANSPARENT_BLUE_VALUE_ARB   0x2039
 240    #define  WGL_TRANSPARENT_ALPHA_VALUE_ARB   0x203A
 241    #define  WGL_TRANSPARENT_INDEX_VALUE_ARB   0x203B
 242    #define  WGL_SHARE_DEPTH_ARB   0x200C
 243    #define  WGL_SHARE_STENCIL_ARB   0x200D
 244    #define  WGL_SHARE_ACCUM_ARB   0x200E
 245    #define  WGL_SUPPORT_GDI_ARB   0x200F
 246    #define  WGL_SUPPORT_OPENGL_ARB   0x2010
 247    #define  WGL_DOUBLE_BUFFER_ARB   0x2011
 248    #define  WGL_STEREO_ARB   0x2012
 249    #define  WGL_PIXEL_TYPE_ARB   0x2013
 250    #define  WGL_COLOR_BITS_ARB   0x2014
 251    #define  WGL_RED_BITS_ARB   0x2015
 252    #define  WGL_RED_SHIFT_ARB   0x2016
 253    #define  WGL_GREEN_BITS_ARB   0x2017
 254    #define  WGL_GREEN_SHIFT_ARB   0x2018
 255    #define  WGL_BLUE_BITS_ARB   0x2019
 256    #define  WGL_BLUE_SHIFT_ARB   0x201A
 257    #define  WGL_ALPHA_BITS_ARB   0x201B
 258    #define  WGL_ALPHA_SHIFT_ARB   0x201C
 259    #define  WGL_ACCUM_BITS_ARB   0x201D
 260    #define  WGL_ACCUM_RED_BITS_ARB   0x201E
 261    #define  WGL_ACCUM_GREEN_BITS_ARB   0x201F
 262    #define  WGL_ACCUM_BLUE_BITS_ARB   0x2020
 263    #define  WGL_ACCUM_ALPHA_BITS_ARB   0x2021
 264    #define  WGL_DEPTH_BITS_ARB   0x2022
 265    #define  WGL_STENCIL_BITS_ARB   0x2023
 266    #define  WGL_AUX_BUFFERS_ARB   0x2024
 267    #define  WGL_NO_ACCELERATION_ARB   0x2025
 268    #define  WGL_GENERIC_ACCELERATION_ARB   0x2026
 269    #define  WGL_FULL_ACCELERATION_ARB   0x2027
 270    #define  WGL_SWAP_EXCHANGE_ARB   0x2028
 271    #define  WGL_SWAP_COPY_ARB   0x2029
 272    #define  WGL_SWAP_UNDEFINED_ARB   0x202A
 273    #define  WGL_TYPE_RGBA_ARB   0x202B
 274    #define  WGL_TYPE_COLORINDEX_ARB   0x202C
 275    #define  ERROR_INVALID_PIXEL_TYPE_ARB   0x2043
 276    #define  ERROR_INCOMPATIBLE_DEVICE_CONTEXTS_ARB   0x2054
 277    #define  WGL_DRAW_TO_PBUFFER_ARB   0x202D
 278    #define  WGL_MAX_PBUFFER_PIXELS_ARB   0x202E
 279    #define  WGL_MAX_PBUFFER_WIDTH_ARB   0x202F
 280    #define  WGL_MAX_PBUFFER_HEIGHT_ARB   0x2030
 281    #define  WGL_PBUFFER_LARGEST_ARB   0x2033
 282    #define  WGL_PBUFFER_WIDTH_ARB   0x2034
 283    #define  WGL_PBUFFER_HEIGHT_ARB   0x2035
 284    #define  WGL_PBUFFER_LOST_ARB   0x2036
 285    #define  ERROR_INVALID_PIXEL_TYPE_EXT   0x2043
 286    #define  WGL_NUMBER_PIXEL_FORMATS_EXT   0x2000
 287    #define  WGL_DRAW_TO_WINDOW_EXT   0x2001
 288    #define  WGL_DRAW_TO_BITMAP_EXT   0x2002
 289    #define  WGL_ACCELERATION_EXT   0x2003
 290    #define  WGL_NEED_PALETTE_EXT   0x2004
 291    #define  WGL_NEED_SYSTEM_PALETTE_EXT   0x2005
 292    #define  WGL_SWAP_LAYER_BUFFERS_EXT   0x2006
 293    #define  WGL_SWAP_METHOD_EXT   0x2007
 294    #define  WGL_NUMBER_OVERLAYS_EXT   0x2008
 295    #define  WGL_NUMBER_UNDERLAYS_EXT   0x2009
 296    #define  WGL_TRANSPARENT_EXT   0x200A
 297    #define  WGL_TRANSPARENT_VALUE_EXT   0x200B
 298    #define  WGL_SHARE_DEPTH_EXT   0x200C
 299    #define  WGL_SHARE_STENCIL_EXT   0x200D
 300    #define  WGL_SHARE_ACCUM_EXT   0x200E
 301    #define  WGL_SUPPORT_GDI_EXT   0x200F
 302    #define  WGL_SUPPORT_OPENGL_EXT   0x2010
 303    #define  WGL_DOUBLE_BUFFER_EXT   0x2011
 304    #define  WGL_STEREO_EXT   0x2012
 305    #define  WGL_PIXEL_TYPE_EXT   0x2013
 306    #define  WGL_COLOR_BITS_EXT   0x2014
 307    #define  WGL_RED_BITS_EXT   0x2015
 308    #define  WGL_RED_SHIFT_EXT   0x2016
 309    #define  WGL_GREEN_BITS_EXT   0x2017
 310    #define  WGL_GREEN_SHIFT_EXT   0x2018
 311    #define  WGL_BLUE_BITS_EXT   0x2019
 312    #define  WGL_BLUE_SHIFT_EXT   0x201A
 313    #define  WGL_ALPHA_BITS_EXT   0x201B
 314    #define  WGL_ALPHA_SHIFT_EXT   0x201C
 315    #define  WGL_ACCUM_BITS_EXT   0x201D
 316    #define  WGL_ACCUM_RED_BITS_EXT   0x201E
 317    #define  WGL_ACCUM_GREEN_BITS_EXT   0x201F
 318    #define  WGL_ACCUM_BLUE_BITS_EXT   0x2020
 319    #define  WGL_ACCUM_ALPHA_BITS_EXT   0x2021
 320    #define  WGL_DEPTH_BITS_EXT   0x2022
 321    #define  WGL_STENCIL_BITS_EXT   0x2023
 322    #define  WGL_AUX_BUFFERS_EXT   0x2024
 323    #define  WGL_NO_ACCELERATION_EXT   0x2025
 324    #define  WGL_GENERIC_ACCELERATION_EXT   0x2026
 325    #define  WGL_FULL_ACCELERATION_EXT   0x2027
 326    #define  WGL_SWAP_EXCHANGE_EXT   0x2028
 327    #define  WGL_SWAP_COPY_EXT   0x2029
 328    #define  WGL_SWAP_UNDEFINED_EXT   0x202A
 329    #define  WGL_TYPE_RGBA_EXT   0x202B
 330    #define  WGL_TYPE_COLORINDEX_EXT   0x202C
 331    #define  WGL_DRAW_TO_PBUFFER_EXT   0x202D
 332    #define  WGL_MAX_PBUFFER_PIXELS_EXT   0x202E
 333    #define  WGL_MAX_PBUFFER_WIDTH_EXT   0x202F
 334    #define  WGL_MAX_PBUFFER_HEIGHT_EXT   0x2030
 335    #define  WGL_OPTIMAL_PBUFFER_WIDTH_EXT   0x2031
 336    #define  WGL_OPTIMAL_PBUFFER_HEIGHT_EXT   0x2032
 337    #define  WGL_PBUFFER_LARGEST_EXT   0x2033
 338    #define  WGL_PBUFFER_WIDTH_EXT   0x2034
 339    #define  WGL_PBUFFER_HEIGHT_EXT   0x2035
 340    #define  WGL_DEPTH_FLOAT_EXT   0x2040
 341    #define  WGL_SAMPLE_BUFFERS_3DFX   0x2060
 342    #define  WGL_SAMPLES_3DFX   0x2061
 343    #define  WGL_SAMPLE_BUFFERS_EXT   0x2041
 344    #define  WGL_SAMPLES_EXT   0x2042
 345    #define  WGL_GENLOCK_SOURCE_MULTIVIEW_I3D   0x2044
 346    #define  WGL_GENLOCK_SOURCE_EXTENAL_SYNC_I3D   0x2045
 347    #define  WGL_GENLOCK_SOURCE_EXTENAL_FIELD_I3D   0x2046
 348    #define  WGL_GENLOCK_SOURCE_EXTENAL_TTL_I3D   0x2047
 349    #define  WGL_GENLOCK_SOURCE_DIGITAL_SYNC_I3D   0x2048
 350    #define  WGL_GENLOCK_SOURCE_DIGITAL_FIELD_I3D   0x2049
 351    #define  WGL_GENLOCK_SOURCE_EDGE_FALLING_I3D   0x204A
 352    #define  WGL_GENLOCK_SOURCE_EDGE_RISING_I3D   0x204B
 353    #define  WGL_GENLOCK_SOURCE_EDGE_BOTH_I3D   0x204C
 354    #define  WGL_GAMMA_TABLE_SIZE_I3D   0x204E
 355    #define  WGL_GAMMA_EXCLUDE_DESKTOP_I3D   0x204F
 356    #define  WGL_DIGITAL_VIDEO_CURSOR_ALPHA_FRAMEBUFFER_I3D   0x2050
 357    #define  WGL_DIGITAL_VIDEO_CURSOR_ALPHA_VALUE_I3D   0x2051
 358    #define  WGL_DIGITAL_VIDEO_CURSOR_INCLUDED_I3D   0x2052
 359    #define  WGL_DIGITAL_VIDEO_GAMMA_CORRECTED_I3D   0x2053
 360    #define  WGL_ARB_buffer_region   1
 361    #define  WGL_ARB_extensions_string   1
 362    #define  WGL_ARB_pixel_format   1
 363    #define  WGL_ARB_make_current_read   1
 364    #define  WGL_ARB_pbuffer   1
 365    #define  WGL_EXT_display_color_table   1
 366    #define  WGL_EXT_extensions_string   1
 367    #define  WGL_EXT_make_current_read   1
 368    #define  WGL_EXT_pbuffer   1
 369    #define  WGL_EXT_pixel_format   1
 370    #define  WGL_EXT_swap_control   1
 371    #define  WGL_WGL_EXT_depth_float   1
 372    #define  WGL_WGL_3DFX_multisample   1
 373    #define  WGL_WGL_EXT_multisample   1
 374    #define  WGL_NV_allocate_memory   1
 375
 376    /*
 377    typedef void (APIENTRY * PFNGLACTIVETEXTUREARBPROC) (GLenum target);
 378    typedef void (APIENTRY * PFNGLMULTITEXCOORD2FARBPROC) (GLenum target, GLfloat s, GLfloat t);
 379    typedef void (APIENTRY * PFNGLCLIENTACTIVETEXTUREARBPROC) (GLenum target);
 380    typedef void (APIENTRY * PFNGLLOCKARRAYSEXTPROC) (GLint first, GLsizei count);
 381    typedef void (APIENTRY * PFNGLUNLOCKARRAYSEXTPROC) (void);
 382    */
 383
 384    /*
 385    typedef int (APIENTRY * PFNGLBINDBUFFERARBPROC) (GLenum target, GLuint buffer);
 386    typedef int (APIENTRY * PFNGLDELETEBUFFERSARBPROC) (GLsizei n, const GLuint *buffers);
 387    typedef int (APIENTRY * PFNGLGENBUFFERSARBPROC) (GLsizei n, GLuint *buffers);
 388    typedef int (APIENTRY * PFNGLBUFFERDATAARBPROC) (GLenum target, int size, const GLvoid *data, GLenum usage);
 389    */
 390    typedef int (APIENTRY * PFNWGLCHOOSEPIXELFORMATARBPROC) ();
 391    typedef void * (APIENTRY * PFNWGLCREATEPBUFFERARBPROC) (HDC hDC, int iPixelFormat, int iWidth, int iHeight, const int *piAttribList);
 392    typedef HDC (APIENTRY * PFNWGLGETPBUFFERDCARBPROC) (void * hPbuffer);
 393    typedef int (APIENTRY * PFNWGLRELEASEPBUFFERDCARBPROC) (void * hPbuffer, HDC hDC);
 394    typedef BOOL (APIENTRY * PFNWGLDESTROYPBUFFERARBPROC) (void * hPbuffer);
 395    typedef BOOL (APIENTRY * PFNWGLQUERYPBUFFERARBPROC) (void * hPbuffer, int iAttribute, int *piValue);
 396    typedef const char * (APIENTRY * PFNWGLGETEXTENSIONSSTRINGARBPROC) (HDC hdc);
 397    typedef BOOL (APIENTRY * PFNWGLBINDTEXIMAGEARBPROC) (void * hPbuffer, int iBuffer);
 398    typedef BOOL (APIENTRY * PFNWGLRELEASETEXIMAGEARBPROC) (void * hPbuffer, int iBuffer);
 399
 400    static PFNGLMAPBUFFERARBPROC glMapBufferARB = null;
 401    static PFNGLUNMAPBUFFERARBPROC glUnmapBufferARB = null;
 402    static PFNGLACTIVETEXTUREARBPROC glActiveTextureARB = null;
 403    static PFNGLMULTITEXCOORD2FARBPROC glMultiTexCoord2fARB = null;
 404    static PFNGLCLIENTACTIVETEXTUREARBPROC glClientActiveTextureARB = null;
 405    static PFNGLLOCKARRAYSEXTPROC glLockArraysEXT = null;
 406    static PFNGLUNLOCKARRAYSEXTPROC glUnlockArraysEXT = null;
 407    static PFNGLBLENDFUNCSEPARATEPROC glBlendFuncSeparate = null;
 408
 409    static PFNGLGENBUFFERSARBPROC glGenBuffersARB = null;
 410    static PFNGLBINDBUFFERARBPROC glBindBufferARB = null;
 411    static PFNGLBUFFERDATAARBPROC glBufferDataARB = null;
 412    static PFNGLDELETEBUFFERSARBPROC glDeleteBuffersARB = null;
 413    static PFNWGLCHOOSEPIXELFORMATARBPROC wglChoosePixelFormatARB = null;
 414    static PFNWGLGETEXTENSIONSSTRINGARBPROC wglGetExtensionsStringARB = null;
 415    static PFNWGLCREATEPBUFFERARBPROC wglCreatePbufferARB = null;
 416    static PFNWGLGETPBUFFERDCARBPROC wglGetPbufferDCARB = null;
 417    static PFNWGLQUERYPBUFFERARBPROC wglQueryPbufferARB = null;
 418    static PFNWGLDESTROYPBUFFERARBPROC wglDestroyPbufferARB = null;
 419    static PFNWGLRELEASEPBUFFERDCARBPROC wglReleasePbufferDCARB = null;
 420    static PFNWGLBINDTEXIMAGEARBPROC wglBindTexImageARB = null;
 421    static PFNWGLRELEASETEXIMAGEARBPROC wglReleaseTexImageARB = null;
 422
 423    #define glBufferData glBufferDataARB
 424
 425    #ifdef WGL_WGLEXT_PROTOTYPES
 426    extern BOOL WINAPI wglSwapIntervalEXT (int);
 427    extern int WINAPI wglGetSwapIntervalEXT (void);
 428    #endif /* WGL_WGLEXT_PROTOTYPES */
 429    typedef BOOL (WINAPI * PFNWGLSWAPINTERVALEXTPROC) (int interval);
 430    typedef int (WINAPI * PFNWGLGETSWAPINTERVALEXTPROC) (void);
 431
 432    static PFNWGLSWAPINTERVALEXTPROC wglSwapIntervalEXT = NULL;
 433
 434 #elif defined(__ANDROID__) || defined(__ODROID__)
 435
 436    #define GL_FRAMEBUFFER           GL_FRAMEBUFFER_OES
 437    #define GL_RENDERBUFFER          GL_RENDERBUFFER_OES
 438    #define GL_COLOR_ATTACHMENT0     GL_COLOR_ATTACHMENT0_OES
 439
 440    #define GL_POLYGON_STIPPLE 0xFFFF
 441    #define GL_LINE_STIPPLE 0xFFFF
 442    #define GL_LINE 0xFFFF
 443    #define GL_FILL 0xFFFF
 444    #define GL_ALL_ATTRIB_BITS 0xFFFF
 445    #define GL_LIGHT_MODEL_LOCAL_VIEWER 0xFFFF
 446
 447    #define GL_POLYGON      9
 448    #define GL_QUADS        7
 449
 450    //#define GL_QUADS              0
 451    #define GL_QUAD_STRIP         0
 452    //#define GL_DOUBLE             0
 453    //#define GL_UNSIGNED_INT       0
 454    //#define GL_FILL               0
 455    //#define GL_LINE               0
 456    //#define GL_LINE_STIPPLE       0
 457    #define GL_BGRA_EXT           0
 458    #define GL_UNPACK_ROW_LENGTH  0
 459    #define GL_UNPACK_SKIP_PIXELS 0
 460    #define GL_UNPACK_SKIP_ROWS   0
 461    #define GL_RGBA8              0
 462    #define GL_PACK_ROW_LENGTH    0
 463    #define GL_PACK_SKIP_ROWS     0
 464    #define GL_PACK_SKIP_PIXELS   0
 465
 466 #endif
 467
 468 #if defined(ECERE_NO3D) || defined(ECERE_VANILLA)
 469 public union Matrix
 470 {
 471    double array[16];
 472    double m[4][4];
 473
 474    void Identity()
 475    {
 476       FillBytesBy4(this, 0, sizeof(Matrix) >> 2);
 477       m[0][0]=m[1][1]=m[2][2]=m[3][3]=1;
 478    }
 479
 480    void Transpose(Matrix source)
 481    {
 482       int i,j;
 483       for(i=0; i<4; i++)
 484          for(j=0; j<4; j++)
 485             m[j][i] = source.m[i][j];
 486    }
 487
 488    void Multiply(Matrix a, Matrix b)
 489    {
 490       // We need a full matrix multiplication for the Projection matrix
 491       m[0][0]=a.m[0][0]*b.m[0][0] + a.m[0][1]*b.m[1][0] + a.m[0][2]*b.m[2][0] + a.m[0][3]*b.m[3][0];
 492       m[0][1]=a.m[0][0]*b.m[0][1] + a.m[0][1]*b.m[1][1] + a.m[0][2]*b.m[2][1] + a.m[0][3]*b.m[3][1];
 493       m[0][2]=a.m[0][0]*b.m[0][2] + a.m[0][1]*b.m[1][2] + a.m[0][2]*b.m[2][2] + a.m[0][3]*b.m[3][2];
 494       m[0][3]=a.m[0][0]*b.m[0][3] + a.m[0][1]*b.m[1][3] + a.m[0][2]*b.m[2][3] + a.m[0][3]*b.m[3][3];
 495
 496       m[1][0]=a.m[1][0]*b.m[0][0] + a.m[1][1]*b.m[1][0] + a.m[1][2]*b.m[2][0] + a.m[1][3]*b.m[3][0];
 497       m[1][1]=a.m[1][0]*b.m[0][1] + a.m[1][1]*b.m[1][1] + a.m[1][2]*b.m[2][1] + a.m[1][3]*b.m[3][1];
 498       m[1][2]=a.m[1][0]*b.m[0][2] + a.m[1][1]*b.m[1][2] + a.m[1][2]*b.m[2][2] + a.m[1][3]*b.m[3][2];
 499       m[1][3]=a.m[1][0]*b.m[0][3] + a.m[1][1]*b.m[1][3] + a.m[1][2]*b.m[2][3] + a.m[1][3]*b.m[3][3];
 500
 501       m[2][0]=a.m[2][0]*b.m[0][0] + a.m[2][1]*b.m[1][0] + a.m[2][2]*b.m[2][0] + a.m[2][3]*b.m[3][0];
 502       m[2][1]=a.m[2][0]*b.m[0][1] + a.m[2][1]*b.m[1][1] + a.m[2][2]*b.m[2][1] + a.m[2][3]*b.m[3][1];
 503       m[2][2]=a.m[2][0]*b.m[0][2] + a.m[2][1]*b.m[1][2] + a.m[2][2]*b.m[2][2] + a.m[2][3]*b.m[3][2];
 504       m[2][3]=a.m[2][0]*b.m[0][3] + a.m[2][1]*b.m[1][3] + a.m[2][2]*b.m[2][3] + a.m[2][3]*b.m[3][3];
 505
 506       m[3][0]=a.m[3][0]*b.m[0][0] + a.m[3][1]*b.m[1][0] + a.m[3][2]*b.m[2][0] + a.m[3][3]*b.m[3][0];
 507       m[3][1]=a.m[3][0]*b.m[0][1] + a.m[3][1]*b.m[1][1] + a.m[3][2]*b.m[2][1] + a.m[3][3]*b.m[3][1];
 508       m[3][2]=a.m[3][0]*b.m[0][2] + a.m[3][1]*b.m[1][2] + a.m[3][2]*b.m[2][2] + a.m[3][3]*b.m[3][2];
 509       m[3][3]=a.m[3][0]*b.m[0][3] + a.m[3][1]*b.m[1][3] + a.m[3][2]*b.m[2][3] + a.m[3][3]*b.m[3][3];
 510    }
 511 };
 512 #endif
 513
 514 // Our own matrix stack
 515 static Matrix matrixStack[3][32];
 516 static int matrixIndex[3];
 517 static int curStack = 0;
 518
 519 #if defined(_GLES)
 520
 521    // OpenGL ES Porting Kit
 522 #if defined(__ANDROID__) || defined(__ODROID__)
 523    #define glBindFramebuffer        glBindFramebufferOES
 524    #define glBindRenderbuffer       glBindRenderbufferOES
 525    #define glFramebufferTexture2D   glFramebufferTexture2DOES
 526    #define glGenFramebuffers        glGenFramebuffersOES
 527    #define glGenRenderbuffers       glGenRenderbuffersOES
 528    #define glDeleteFramebuffers     glDeleteFramebuffersOES
 529    #define glDeleteRenderbuffers    glDeleteRenderbuffersOES
 530
 531    #define GL_INT                                  0x1404
 532    #define GL_UNSIGNED_INT                         0x1405
 533    #define GL_DOUBLE                               0x140A
 534    #define APIENTRY
 535 #endif
 536
 537    #define glDrawElementsi(type, count, start)  glDrawElements(type, count, GL_UNSIGNED_SHORT, start)
 538
 539    #define glBufferDatai         glesBufferDatai
 540    #define glBufferDatad         glesBufferDatad
 541    #define glVertexPointeri      glesVertexPointeri
 542    #define glVertexPointerd      glesVertexPointerd
 543
 544    #define glRecti               glesRecti
 545    #define glBegin               glesBegin
 546    #define glTexCoord2i          glesTexCoord2i
 547    #define glVertex2i            glesVertex2i
 548    #define glTexCoord2d          glesTexCoord2d
 549    #define glVertex2d            glesVertex2d
 550    #define glTexCoord2f          glesTexCoord2f
 551    #define glVertex2f            glesVertex2f
 552    #define glEnd                 glesEnd
 553    #define glColor3f             glesColor3f
 554    #define glColor4ub            glesColor4ub
 555    #define glColor4fv            glesColor4fv
 556    #define glLineStipple         glesLineStipple
 557    #define glNormal3fv           glesNormal3fv
 558    #define glNormal3f            glesNormal3f
 559    #define glTexCoord2fv         glesTexCoord2fv
 560    #define glColorMaterial       glesColorMaterial
 561
 562    #define glLoadMatrixd         glesLoadMatrixd
 563    #define glMultMatrixd         glesMultMatrixd
 564    #define glFrustum             glesFrustum
 565    #define glOrtho               glesOrtho
 566    #define glScaled              glesScaled
 567    #define glTranslated          glesTranslated
 568    #define glRotated             glesRotated
 569    #define glVertex3d            glesVertex3d
 570    #define glVertex3dv           glesVertex3dv
 571    #define glVertex3f            glesVertex3f
 572    #define glVertex3fv           glesVertex3fv
 573    #define glLightModeli         glesLightModeli
 574
 575 #else
 576
 577 #define glVertexPointerd(nc, s, p, nv)       glVertexPointer(nc, GL_DOUBLE, s, p)
 578 #define glDrawElementsi(type, count, start)  glDrawElements(type, count, GL_UNSIGNED_INT, start)
 579
 580 #endif
 581
 582 #if defined(__ANDROID__) || defined(__ODROID__)
 583    static EGLDisplay eglDisplay;
 584    static EGLSurface eglSurface;
 585    static EGLContext eglContext;
 586    static int eglWidth, eglHeight;
 587
 588 #if defined(__ANDROID__)
 589    static bool egl_init_display(ANativeWindow* window)
 590 #else
 591    static bool egl_init_display(uint window)
 592 #endif
 593    {
 594       const EGLint attribs[] =
 595       {
 596          EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
 597          EGL_BLUE_SIZE, 8,
 598          EGL_GREEN_SIZE, 8,
 599          EGL_RED_SIZE, 8,
 600          EGL_DEPTH_SIZE, 16, //24,
 601          /*EGL_SAMPLE_BUFFERS, 1,
 602          EGL_SAMPLES, 0, //2,*/
 603          EGL_NONE
 604       };
 605       EGLint w, h, format;
 606       EGLint numConfigs;
 607       EGLConfig config;
 608       EGLSurface surface;
 609       EGLContext context;
 610
 611       EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
 612       eglInitialize(display, 0, 0);
 613       eglChooseConfig(display, attribs, &config, 1, &numConfigs);
 614       eglGetConfigAttrib(display, config, EGL_NATIVE_VISUAL_ID, &format);
 615
 616       surface = eglCreateWindowSurface(display, config, window, null);
 617       context = eglCreateContext(display, config, null, null);
 618
 619       if(!eglMakeCurrent(display, surface, surface, context))
 620          return false;
 621
 622       eglQuerySurface(display, surface, EGL_WIDTH, &w);
 623       eglQuerySurface(display, surface, EGL_HEIGHT, &h);
 624
 625       eglDisplay = display;
 626       eglContext = context;
 627       eglSurface = surface;
 628       eglWidth = w;
 629       eglHeight = h;
 630
 631       glEnableClientState(GL_VERTEX_ARRAY);
 632       /*
 633       // Initialize GL state.
 634       glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
 635       glEnable(GL_CULL_FACE);
 636       glShadeModel(GL_SMOOTH);
 637       glDisable(GL_DEPTH_TEST);
 638       */
 639       glDisable(GL_CULL_FACE);
 640       glDisable(GL_DEPTH_TEST);
 641
 642       glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 643       glEnable(GL_BLEND);
 644
 645       matrixStack[0][0].Identity();
 646       matrixStack[1][0].Identity();
 647       matrixStack[2][0].Identity();
 648
 649       glesMatrixMode(GL_MODELVIEW);
 650       glScaled(1.0, 1.0, -1.0);
 651       glesMatrixMode(GL_PROJECTION);
 652       glShadeModel(GL_FLAT);
 653
 654       glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
 655       glFogi(GL_FOG_MODE, GL_EXP);
 656       glFogf(GL_FOG_DENSITY, 0);
 657       glEnable(GL_NORMALIZE);
 658       glDepthFunc(GL_LESS);
 659       glClearDepth(1.0);
 660       glDisable(GL_MULTISAMPLE_ARB);
 661
 662       glViewport(0,0,w,h);
 663       glesLoadIdentity();
 664       glOrtho(0,w,h,0,0.0,1.0);
 665
 666       curArrayBuffer = 0;
 667       curElementBuffer = 0;
 668       return true;
 669    }
 670
 671    static void egl_term_display()
 672    {
 673       if(stippleTexture)
 674       {
 675          glDeleteTextures(1, &stippleTexture);
 676          stippleTexture = 0;
 677       }
 678       if(eglDisplay != EGL_NO_DISPLAY)
 679       {
 680          eglMakeCurrent(eglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
 681          if(eglContext != EGL_NO_CONTEXT)
 682             eglDestroyContext(eglDisplay, eglContext);
 683          if(eglSurface != EGL_NO_SURFACE)
 684             eglDestroySurface(eglDisplay, eglSurface);
 685          eglTerminate(eglDisplay);
 686       }
 687       eglDisplay = EGL_NO_DISPLAY;
 688       eglContext = EGL_NO_CONTEXT;
 689       eglSurface = EGL_NO_SURFACE;
 690    }
 691
 692 #endif
 693
 694 // OpenGL Immediate Mode Porting Kit
 695 static int beginCount;
 696 static int vertexCount;
 697 static int normalCount;
 698 static float *vertexPointer;
 699 static float *normalPointer;
 700 static GLenum beginMode = -1;
 701 static uint beginBufferSize, normalBufferSize;
 702 static int numVertexCoords = 2;
 703 static bool vertexColorValues = false;
 704 static int vertexStride = 4;
 705 static int vertexOffset = 2;
 706
 707 public void glesRecti(int a, int b, int c, int d)
 708 {
 709    glBegin(GL_QUADS);
 710    glVertex2i(a, b);
 711    glVertex2i(a, d);
 712    glVertex2i(c, d);
 713    glVertex2i(c, b);
 714    glEnd();
 715 }
 716
 717 public void glesBegin(GLenum mode)
 718 {
 719    beginMode = mode;
 720    beginCount = 0;
 721    vertexCount = 0;
 722    vertexColorValues = false;
 723    vertexOffset = 2;
 724    vertexStride = 4;
 725    numVertexCoords = 2;
 726
 727    if(!vertexPointer)
 728    {
 729       normalBufferSize = beginBufferSize = 1024;  // default number of vertices
 730       vertexPointer = new float[beginBufferSize * vertexStride];
 731       normalPointer = new float[normalBufferSize * 3];
 732    }
 733 }
 734
 735 public void glesTexCoord2f(float x, float y)
 736 {
 737    int count = vertexCount;
 738
 739    if(vertexCount + numVertexCoords > beginBufferSize)
 740    {
 741       beginBufferSize = beginBufferSize + beginBufferSize/2;
 742       vertexPointer = renew vertexPointer float[beginBufferSize * vertexStride];
 743    }
 744
 745    vertexPointer[count*vertexStride  ] = x;
 746    vertexPointer[count*vertexStride+1] = y;
 747    count++;
 748
 749    if(beginMode == GL_QUADS && ((beginCount % 4) == 3))
 750    {
 751       vertexPointer[count*vertexStride  ] = vertexPointer[(count-4)*vertexStride];
 752       vertexPointer[count*vertexStride+1] = vertexPointer[(count-4)*vertexStride+1];
 753       count++;
 754       vertexPointer[count*vertexStride  ] = vertexPointer[(count-3)*vertexStride];
 755       vertexPointer[count*vertexStride+1] = vertexPointer[(count-3)*vertexStride+1];
 756       count++;
 757    }
 758 }
 759 public void glesTexCoord2i(int x, int y)       { glesTexCoord2f((float)x, (float)y); }
 760 public void glesTexCoord2d(double x, double y) { glesTexCoord2f((float)x, (float)y); }
 761 public void glesTexCoord2fv(float * a)         { glesTexCoord2f(a[0], a[1]); }
 762
 763 public void glesVertex2f(float x, float y)
 764 {
 765    numVertexCoords = 2;
 766    vertexStride = vertexOffset + numVertexCoords;
 767
 768    if(vertexCount + 4 > beginBufferSize)
 769    {
 770       beginBufferSize = beginBufferSize + beginBufferSize/2;
 771       vertexPointer = renew vertexPointer float[beginBufferSize * vertexStride];
 772    }
 773
 774    vertexPointer[vertexCount*vertexStride+vertexOffset] = x;
 775    vertexPointer[vertexCount*vertexStride+vertexOffset + 1] = y;
 776    vertexCount++;
 777
 778    if(beginMode == GL_QUADS && ((beginCount % 4) == 3))
 779    {
 780       vertexPointer[vertexCount*vertexStride+vertexOffset] = vertexPointer[(vertexCount-4)*vertexStride+vertexOffset];
 781       vertexPointer[vertexCount*vertexStride+vertexOffset + 1] = vertexPointer[(vertexCount-4)*vertexStride+vertexOffset + 1];
 782       vertexCount++;
 783       vertexPointer[vertexCount*vertexStride+vertexOffset] = vertexPointer[(vertexCount-3)*vertexStride+vertexOffset];
 784       vertexPointer[vertexCount*vertexStride+vertexOffset + 1] = vertexPointer[(vertexCount-3)*vertexStride+vertexOffset + 1];
 785       vertexCount++;
 786    }
 787    beginCount++;
 788 }
 789 public void glesVertex2i(int x, int y)         { glesVertex2f((float)x, (float)y); }
 790 public void glesVertex2d(double x, double y)   { glesVertex2f((float)x, (float)y); }
 791
 792 public void glesEnd(void)
 793 {
 794    int mode = beginMode;
 795    if(mode == GL_QUADS)        mode = GL_TRIANGLES;
 796    else if(mode == GL_POLYGON) mode = GL_TRIANGLE_FAN;
 797
 798    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 799    noAB.use(texCoord, 2, GL_FLOAT, vertexStride * sizeof(float), vertexPointer);
 800    if(vertexColorValues)
 801    {
 802       glEnableClientState(GL_COLOR_ARRAY);
 803       noAB.use(color, 4, GL_FLOAT, vertexStride * sizeof(float), vertexPointer + 2);
 804    }
 805    noAB.use(vertex, numVertexCoords, GL_FLOAT, (vertexStride)*sizeof(float),vertexPointer+vertexOffset);
 806    if(normalCount && normalCount == vertexCount)
 807    {
 808       glEnableClientState(GL_NORMAL_ARRAY);
 809       noAB.use(normal, 3, GL_FLOAT, 3*sizeof(float),normalPointer);
 810    }
 811
 812    glDrawArrays(mode, 0, vertexCount);
 813    if(normalCount)
 814       glDisableClientState(GL_NORMAL_ARRAY);
 815    if(vertexColorValues)
 816       glDisableClientState(GL_COLOR_ARRAY);
 817    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
 818    normalCount = 0;
 819    vertexColorValues = false;
 820    numVertexCoords = 2;
 821    beginMode = -1;
 822 }
 823
 824 // Vertex Pointer
 825 static float *floatVPBuffer = null;
 826 static short *shortVPBuffer = null;
 827 static unsigned int shortVPSize = 0, floatVPSize = 0;
 828
 829 // Buffer Data
 830 //static float *floatVPBuffer = null;  // For floats we reuse floatVPBuffer
 831 static unsigned short *shortBDBuffer = null;
 832 static unsigned int shortBDSize = 0/*, floatVPSize = 0*/;
 833
 834 public void glesVertexPointeri(int numCoords, int stride, int *pointer, int numVertices)
 835 {
 836    if(pointer)
 837    {
 838       int i;
 839       if(numVertices*numCoords > shortVPSize)
 840       {
 841          shortVPSize = numVertices*numCoords;
 842          shortVPBuffer = renew shortVPBuffer short[shortVPSize];
 843       }
 844       for(i = 0; i < numVertices*numCoords; i++)
 845          shortVPBuffer[i] = (short)pointer[i];
 846       glVertexPointer(numCoords, GL_SHORT, stride, shortVPBuffer);
 847    }
 848    else
 849       glVertexPointer(numCoords, GL_SHORT, stride, 0);
 850 }
 851
 852 public void glesVertexPointerd(int numCoords, int stride, double *pointer, int numVertices)
 853 {
 854    if(pointer)
 855    {
 856       int i;
 857       if(numVertices*numCoords > floatVPSize)
 858       {
 859          floatVPSize = numVertices*numCoords;
 860          floatVPBuffer = renew floatVPBuffer float[floatVPSize];
 861       }
 862       for(i = 0; i < numVertices*numCoords; i++)
 863          floatVPBuffer[i] = (float)pointer[i];
 864       glVertexPointer(numCoords, GL_FLOAT, stride, floatVPBuffer);
 865    }
 866    else
 867       glVertexPointer(numCoords, GL_FLOAT, stride, 0);
 868 }
 869
 870 public void glesTexReuseIntVP(int numCoords)
 871 {
 872    glTexCoordPointer(numCoords, GL_SHORT, 0, floatVPBuffer);
 873 }
 874
 875 public void glesTexReuseDoubleVP(int numCoords)
 876 {
 877    glTexCoordPointer(numCoords, GL_FLOAT, 0, floatVPBuffer);
 878 }
 879
 880 public void glesColor4f(float r, float g, float b, float a)
 881 {
 882    if(beginMode != (GLenum)-1)
 883    {
 884       int count = vertexCount;
 885
 886       vertexColorValues = true;
 887       vertexOffset = 6;
 888       vertexStride = vertexOffset + numVertexCoords;
 889
 890       if(vertexCount + vertexStride > beginBufferSize)
 891       {
 892          beginBufferSize = beginBufferSize + beginBufferSize/2;
 893          vertexPointer = renew vertexPointer float[beginBufferSize * vertexStride];
 894       }
 895
 896       vertexPointer[count*vertexStride + 2] = r;
 897       vertexPointer[count*vertexStride + 3] = g;
 898       vertexPointer[count*vertexStride + 4] = b;
 899       vertexPointer[count*vertexStride + 5] = a;
 900       count++;
 901
 902       if(beginMode == GL_QUADS && ((beginCount % 4) == 3))
 903       {
 904          vertexPointer[count*vertexStride + 2] = vertexPointer[(count-4) * vertexStride + 2];
 905          vertexPointer[count*vertexStride + 3] = vertexPointer[(count-4) * vertexStride + 3];
 906          vertexPointer[count*vertexStride + 4] = vertexPointer[(count-4) * vertexStride + 4];
 907          vertexPointer[count*vertexStride + 5] = vertexPointer[(count-4) * vertexStride + 5];
 908          count++;
 909          vertexPointer[count*vertexStride + 2] = vertexPointer[(count-3) * vertexStride + 2];
 910          vertexPointer[count*vertexStride + 3] = vertexPointer[(count-3) * vertexStride + 3];
 911          vertexPointer[count*vertexStride + 4] = vertexPointer[(count-3) * vertexStride + 4];
 912          vertexPointer[count*vertexStride + 5] = vertexPointer[(count-3) * vertexStride + 5];
 913          count++;
 914       }
 915    }
 916    else
 917       glColor4f(r, g, b, a);
 918 }
 919
 920 public void glesColor3f( float r, float g, float b )
 921 {
 922    glesColor4f(r, g, b, 1.0f);
 923 }
 924
 925 public void glesColor4ub(unsigned char r, unsigned char g, unsigned char b, unsigned char a)
 926 {
 927    glesColor4f(r/255.0f, g/255.0f, b/255.0f, a/255.0f);
 928 }
 929
 930 public void glesColor4fv(float * a)
 931 {
 932    glesColor4f(a[0], a[1], a[2], a[3]);
 933 }
 934
 935 public void glesBufferDatad(int target, int size, void * data, int usage)
 936 {
 937    int numElems = size/sizeof(double);
 938    double * dblPtr = (double *)data;
 939    int i;
 940    if (numElems > floatVPSize)
 941    {
 942       floatVPSize = numElems;
 943       floatVPBuffer = renew floatVPBuffer float[floatVPSize];
 944    }
 945    for (i=0; i< numElems; i++)
 946       floatVPBuffer[i] = (float)dblPtr[i];
 947
 948    glBufferData(target, numElems*sizeof(float), floatVPBuffer, usage);
 949 }
 950
 951 public void glesBufferDatai(int target, int size, void * data, int usage)
 952 {
 953    int numElems = size/sizeof(unsigned int);
 954    unsigned int * pointer = (unsigned int *)data;
 955    int i;
 956    if (numElems > shortBDSize)
 957    {
 958       shortBDSize = numElems;
 959       shortBDBuffer = renew shortBDBuffer uint16[shortBDSize];
 960    }
 961    for (i=0; i< numElems; i++)
 962       shortBDBuffer[i] = (unsigned short)pointer[i];
 963
 964    glBufferData(target, numElems*sizeof(unsigned short), shortBDBuffer, usage);
 965 }
 966
 967 // *** Our Custom Matrix Stack ***
 968
 969 static void LoadCurMatrix()
 970 {
 971    double * i = matrixStack[curStack][matrixIndex[curStack]].array;
 972    float m[16] =
 973    {
 974       (float)i[0],(float)i[1],(float)i[2],(float)i[3],
 975       (float)i[4],(float)i[5],(float)i[6],(float)i[7],
 976       (float)i[8],(float)i[9],(float)i[10],(float)i[11],
 977       (float)i[12],(float)i[13],(float)i[14],(float)i[15]
 978    };
 979    glLoadMatrixf(m);
 980 }
 981
 982 public void glesLoadIdentity()
 983 {
 984    matrixStack[curStack][matrixIndex[curStack]].Identity();
 985    LoadCurMatrix();
 986 }
 987
 988 public void glesPushMatrix()
 989 {
 990    if(matrixIndex[curStack] + 1 < sizeof(matrixStack[0]) / sizeof(Matrix))
 991    {
 992       matrixIndex[curStack]++;
 993       memcpy(matrixStack[curStack][matrixIndex[curStack]].array, matrixStack[curStack][matrixIndex[curStack]-1].array, sizeof(Matrix));
 994    }
 995 }
 996
 997 public void glesPopMatrix()
 998 {
 999    if(matrixIndex[curStack] > 0)
1000    {
1001       matrixIndex[curStack]--;
1002       LoadCurMatrix();
1003    }
1004 }
1005
1006 public void glesLoadMatrixd(double * i)
1007 {
1008    memcpy(matrixStack[curStack][matrixIndex[curStack]].array, i, sizeof(Matrix));
1009    LoadCurMatrix();
1010 }
1011
1012 public void glesOrtho( double l, double r, double b, double t, double n, double f )
1013 {
1014    Matrix m
1015    { {
1016       (2 / (r - l)), 0, 0, 0,
1017       0, (2 / (t - b)), 0, 0,
1018       0, 0, (-2 / (f - n)), 0,
1019       (-(r + l) / (r - l)), (-(t + b) / (t - b)), (-(f + n) / (f - n)), 1
1020    } };
1021    Matrix res;
1022    res.Multiply(m, matrixStack[curStack][matrixIndex[curStack]]);
1023    matrixStack[curStack][matrixIndex[curStack]] = res;
1024    LoadCurMatrix();
1025 }
1026
1027 public void glesFrustum( double l, double r, double b, double t, double n, double f )
1028 {
1029    nearPlane = n;
1030    n = 1;
1031    l /= nearPlane;
1032    r /= nearPlane;
1033    b /= nearPlane;
1034    t /= nearPlane;
1035    f /= nearPlane;
1036    {
1037       double A = ((r + l) / (r - l));
1038       double B = ((t + b) / (t - b));
1039       double C = (-(f + n) / (f - n));
1040       double D = (-2*f*n/(f-n));
1041       Matrix m
1042       { {
1043          (2.0*n / (r - l)), 0, 0, 0,
1044          0, (2.0*n / (t - b)), 0, 0,
1045          A, B,             C,-1,
1046          0, 0,             D, 0
1047       } };
1048       Matrix res;
1049       res.Multiply(m, matrixStack[curStack][matrixIndex[curStack]]);
1050       matrixStack[curStack][matrixIndex[curStack]] = res;
1051       LoadCurMatrix();
1052    }
1053 }
1054
1055 #if !defined(ECERE_NO3D) && !defined(ECERE_VANILLA)
1056 public void glesRotated( double a, double b, double c, double d )
1057 {
1058    Quaternion q;
1059    Matrix m, r;
1060
1061    q.RotationAxis({(float)b,(float)c,(float)-d}, a );
1062    m.RotationQuaternion(q);
1063    r.Multiply(m, matrixStack[curStack][matrixIndex[curStack]]);
1064    matrixStack[curStack][matrixIndex[curStack]] = r;
1065    LoadCurMatrix();
1066 }
1067 public void glesScaled( double a, double b, double c )
1068 {
1069    Matrix m, r;
1070
1071    m.Identity();
1072    m.Scale(a,b,c);
1073    r.Multiply(m, matrixStack[curStack][matrixIndex[curStack]]);
1074    matrixStack[curStack][matrixIndex[curStack]] = r;
1075    LoadCurMatrix();
1076 }
1077
1078 public void glesTranslated( double a, double b, double c )
1079 {
1080    Matrix m, r;
1081
1082    m.Identity();
1083    m.Translate(a,b,c);
1084    r.Multiply(m, matrixStack[curStack][matrixIndex[curStack]]);
1085    matrixStack[curStack][matrixIndex[curStack]] = r;
1086    LoadCurMatrix();
1087 }
1088
1089 public void glesMultMatrixd( double * i )
1090 {
1091    Matrix r;
1092    r.Multiply((Matrix *)i, matrixStack[curStack][matrixIndex[curStack]]);
1093    matrixStack[curStack][matrixIndex[curStack]] = r;
1094    LoadCurMatrix();
1095 }
1096 #endif
1097
1098 public void glesMatrixMode(int mode)
1099 {
1100    curStack = (mode == GL_MODELVIEW) ? 0 : (mode == GL_PROJECTION) ? 1 : 2;
1101    glMatrixMode(mode);
1102 }
1103
1104 #if defined(_GLES)
1105
1106 #define glPushMatrix          glesPushMatrix
1107 #define glPopMatrix           glesPopMatrix
1108 #define glLoadIdentity        glesLoadIdentity
1109 #define glMatrixMode          glesMatrixMode
1110
1111 #endif
1112
1113 /* Using the built-in matrix stack
1114 void glesLoadMatrixd( double * i )
1115 {
1116    float m[16] =
1117    {
1118       (float)i[0],(float)i[1],(float)i[2],(float)i[3],
1119       (float)i[4],(float)i[5],(float)i[6],(float)i[7],
1120       (float)i[8],(float)i[9],(float)i[10],(float)i[11],
1121       (float)i[12],(float)i[13],(float)i[14],(float)i[15]
1122    };
1123    glLoadMatrixf(m);
1124 }
1125
1126 void glesOrtho( double l, double r, double b, double t, double n, double f )
1127 {
1128    float matrix[4][4] =
1129    {
1130       { (float)(2 / (r - l)), 0, 0, 0 },
1131       { 0, (float)(2 / (t - b)), 0, 0 },
1132       { 0, 0, (float)(-2 / (f - n)), 0 },
1133       { (float)(-(r + l) / (r - l)), (float)(-(t + b) / (t - b)), (float)(-(f + n) / (f - n)), 1 }
1134    };
1135    glMultMatrixf((float *)matrix);
1136 }
1137
1138 void glesFrustum( double l, double r, double b, double t, double n, double f )
1139 {
1140    float A = (float)((r + l) / (r - l));
1141    float B = (float)((t + b) / (t - b));
1142    float C = (float)(-(f + n) / (f - n));
1143    float D = (float)(-2*f*n/(f-n));
1144    float matrix[4][4] =
1145    {
1146       { (float)(2*n / (r - l)), 0, 0, 0 },
1147       { 0, (float)(2*n / (t - b)), 0, 0 },
1148       { A, B,             C,-1 },
1149       { 0, 0,             D, 0 }
1150    };
1151    glMultMatrixf((float *)matrix);
1152 }
1153
1154 void glesRotated( double a, double b, double c, double d ) { glRotatef((float)a, (float)b, (float)c, (float)d); }
1155 void glesScaled( double a, double b, double c ) { glScalef((float)a, (float)b, (float)c); }
1156 void glesTranslated( double a, double b, double c ) { glTranslatef((float)a, (float)b, (float)c); }
1157
1158 void glesMultMatrixd( double * i )
1159 {
1160    float m[16] =
1161    {
1162       (float)i[0], (float)i[1], (float)i[2], (float)i[3],
1163       (float)i[4], (float)i[5], (float)i[6], (float)i[7],
1164       (float)i[8], (float)i[9], (float)i[10], (float)i[11],
1165       (float)i[12], (float)i[13], (float)i[14], (float)i[15]
1166    };
1167    glMultMatrixf(m);
1168 }
1169 */
1170
1171 // Need to do these...
1172 public void glesVertex3f( float x, float y, float z )
1173 {
1174    numVertexCoords = 3;
1175    vertexStride = vertexOffset + numVertexCoords;
1176
1177    if(vertexCount + vertexStride > beginBufferSize)
1178    {
1179       beginBufferSize = beginBufferSize + beginBufferSize/2;
1180       vertexPointer = renew vertexPointer float[beginBufferSize * vertexStride];
1181    }
1182
1183    vertexPointer[vertexCount*vertexStride+vertexOffset] = x;
1184    vertexPointer[vertexCount*vertexStride+vertexOffset+1] = y;
1185    vertexPointer[vertexCount*vertexStride+vertexOffset+2] = z;
1186    vertexCount++;
1187
1188    if(beginMode == GL_QUADS && ((beginCount % 4) == 3))
1189    {
1190       vertexPointer[vertexCount*vertexStride+vertexOffset] = vertexPointer[(vertexCount-4)*vertexStride+vertexOffset];
1191       vertexPointer[vertexCount*vertexStride+vertexOffset+1] = vertexPointer[(vertexCount-4)*vertexStride+vertexOffset+1];
1192       vertexPointer[vertexCount*vertexStride+vertexOffset+2] = vertexPointer[(vertexCount-4)*vertexStride+vertexOffset+2];
1193       vertexCount++;
1194       vertexPointer[vertexCount*vertexStride+vertexOffset] = vertexPointer[(vertexCount-3)*vertexStride+vertexOffset];
1195       vertexPointer[vertexCount*vertexStride+vertexOffset+1] = vertexPointer[(vertexCount-3)*vertexStride+vertexOffset+1];
1196       vertexPointer[vertexCount*vertexStride+vertexOffset+2] = vertexPointer[(vertexCount-3)*vertexStride+vertexOffset+2];
1197       vertexCount++;
1198    }
1199    beginCount++;
1200 }
1201
1202 public void glesVertex3d( double x, double y, double z )  { glesVertex3f((float)x, (float)y, (float)z); }
1203 public void glesVertex3fv( float* coords )                { glesVertex3f(coords[0], coords[1], coords[2]); }
1204 public void glesVertex3dv( double* coords )               { glesVertex3f((float)coords[0], (float)coords[1], (float)coords[2]); }
1205
1206 public void glesNormal3f(float x, float y, float z)
1207 {
1208    normalCount = vertexCount;
1209    if(vertexCount + 4 > normalBufferSize)
1210    {
1211       normalBufferSize = normalBufferSize + normalBufferSize/2;
1212       normalPointer = renew normalPointer float[normalBufferSize * 2];
1213    }
1214
1215    normalPointer[normalCount*3+0] = x;
1216    normalPointer[normalCount*3+1] = y;
1217    normalPointer[normalCount*3+2] = z;
1218    normalCount++;
1219
1220    if(beginMode == GL_QUADS && ((beginCount % 4) == 3))
1221    {
1222       normalPointer[normalCount*3+0] = normalPointer[(normalCount-4)*3+0];
1223       normalPointer[normalCount*3+1] = normalPointer[(normalCount-4)*3+1];
1224       normalPointer[normalCount*3+2] = normalPointer[(normalCount-4)*3+2];
1225       normalCount++;
1226       normalPointer[normalCount*3+0] = normalPointer[(normalCount-3)*3+0];
1227       normalPointer[normalCount*3+1] = normalPointer[(normalCount-3)*3+1];
1228       normalPointer[normalCount*3+2] = normalPointer[(normalCount-3)*3+2];
1229       normalCount++;
1230    }
1231 }
1232 public void glesNormal3fd(double x, double y, double z)         { glesNormal3f((float)x, (float)y, (float)z); }
1233 public void glesNormal3fv(float * coords)                       { glesNormal3f(coords[0], coords[1], coords[2]); }
1234
1235 public void glesColorMaterial(int a, int b)
1236 {
1237    PrintLn("glColorMaterial stub");
1238 }
1239
1240 public void glesTerminate()
1241 {
1242    delete vertexPointer;
1243    delete normalPointer;
1244    beginBufferSize = 0;
1245
1246    delete floatVPBuffer;
1247    shortVPSize = 0;
1248
1249    delete shortVPBuffer;
1250    floatVPSize = 0;
1251
1252    delete shortBDBuffer;
1253    shortBDSize = 0;
1254 }
1255
1256 static GLuint stippleTexture;
1257 #if defined(_GLES) || defined(EM_MODE)
1258 static bool stippleEnabled;
1259 #endif
1260
1261 public void glesLineStipple( int i, unsigned short j )
1262 {
1263    uint texture[1*16];
1264    int x;
1265    for(x = 0; x < 16; x++)
1266    {
1267       bool v = (j & (1 << x)) != 0;
1268       texture[x] = v ? 0xFFFFFFFF : 0;
1269    }
1270    if(!stippleTexture)
1271       glGenTextures(1, &stippleTexture);
1272    glBindTexture(GL_TEXTURE_2D, stippleTexture);
1273    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 16, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, texture);
1274    glEnable(GL_TEXTURE_2D);
1275    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
1276    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
1277    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
1278    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
1279    glMatrixMode(GL_TEXTURE);
1280    glLoadIdentity();
1281    //glTranslated(1.0/backAttrib->texW/2.0f, 1.0/backAttrib->texH/2.0f, 0.0f);
1282    glScaled(i/16.0, 1, 1.0f);
1283    glTranslated(0.5, 0.5, 0);
1284    glMatrixMode(GL_PROJECTION);
1285 }
1286
1287 public void glesLightModeli( unsigned int pname, int param )
1288 {
1289 #if !defined(EM_MODE)
1290    if(pname == GL_LIGHT_MODEL_TWO_SIDE)
1291       glLightModelf(GL_LIGHT_MODEL_TWO_SIDE, param);
1292 #endif
1293 }
1294
1295 #if defined(__ANDROID__) || defined(__ODROID__)
1296 void glClearDepth( double depth ) { glClearDepthf((float)depth); }
1297 void glFogi( unsigned int pname, int param ) { }
1298 void glPolygonMode( unsigned int i, unsigned int j ) { }
1299
1300
1301 // *** Picking won't be supported for now ***
1302 void glPushName( unsigned int i ) { }
1303 void glLoadName( unsigned int i ) { }
1304 void glPopName() { }
1305
1306 // Probably replace by regular glBlendFunc ...
1307 void glBlendFuncSeparate(int a, int b, int c, int d)
1308 {
1309    glBlendFunc(a, b);
1310 }
1311
1312 // For direct pixel blitting...
1313 void glRasterPos2d(double a, double b) { }
1314 void glPixelZoom(float a, float b) { }
1315 void glDrawPixels(int a, int b, int c, int d, void * e) { }
1316
1317 #endif
1318
1319 #if !defined(__APPLE__) && !defined(__WIN32__) && !defined(__ODROID__)
1320 void (APIENTRY * glBindBufferARB) (GLenum target, GLuint buffer);
1321 void (APIENTRY * glGenBuffersARB) (GLsizei n, GLuint *buffers);
1322 void (APIENTRY * glDeleteBuffersARB) (GLsizei n, const GLuint *buffers);
1323 void (APIENTRY * glBufferDataARB) (GLenum target, int size, const GLvoid *data, GLenum usage);
1324 #endif
1325
1326 public void GLLoadMatrix(Matrix matrix)
1327 {
1328    float m[16] =
1329    {
1330       (float)matrix.m[0][0], (float)matrix.m[0][1], (float)matrix.m[0][2], (float)matrix.m[0][3],
1331       (float)matrix.m[1][0], (float)matrix.m[1][1], (float)matrix.m[1][2], (float)matrix.m[1][3],
1332       (float)matrix.m[2][0], (float)matrix.m[2][1], (float)matrix.m[2][2], (float)matrix.m[2][3],
1333       (float)matrix.m[3][0], (float)matrix.m[3][1], (float)matrix.m[3][2], (float)matrix.m[3][3]
1334    };
1335    glLoadMatrixf(m);
1336 }
1337
1338 public enum GLBufferContents { vertex, normal, texCoord, color };
1339
1340 public define noAB = GLAB { 0 };
1341
1342 static uint curArrayBuffer;
1343
1344 public struct GLAB
1345 {
1346    uint buffer;
1347
1348    void upload(uint size, void * data)
1349    {
1350       if(this != null)
1351       {
1352          if(!buffer)
1353             glGenBuffers(1, &buffer);
1354          if(curArrayBuffer != buffer)
1355          {
1356             glBindBuffer(GL_ARRAY_BUFFER, buffer);
1357             curArrayBuffer = buffer;
1358          }
1359          glBufferData(GL_ARRAY_BUFFER, size, data, GL_STATIC_DRAW);  //GL_DYNAMIC_DRAW);
1360       }
1361    }
1362
1363    void free()
1364    {
1365       if(this != null)
1366       {
1367          glDeleteBuffers(1, &buffer);
1368          buffer = 0;
1369       }
1370    }
1371
1372    void use(GLBufferContents contents, int n, int type, uint stride, void * pointer)
1373    {
1374       if(curArrayBuffer != ((this != null) ? buffer : 0))
1375       {
1376          glBindBuffer(GL_ARRAY_BUFFER, ((this != null) ? buffer : 0));
1377          curArrayBuffer = ((this != null) ? buffer : 0);
1378       }
1379       switch(contents)
1380       {
1381          case normal:   glNormalPointer(type, stride, pointer); break;
1382          case vertex:   glVertexPointer(n, type, stride, pointer); break;
1383          case texCoord: glTexCoordPointer(n, type, stride, pointer); break;
1384          case color:    glColorPointer(n, type, stride, pointer); break;
1385       }
1386    }
1387 };
1388
1389 static uint curElementBuffer;
1390
1391 public define noEAB = GLEAB { 0 };
1392
1393 public struct GLEAB
1394 {
1395    uint buffer;
1396
1397    void upload(uint size, void * data)
1398    {
1399       if(this != null)
1400       {
1401          if(!buffer)
1402             glGenBuffers(1, &buffer);
1403
1404          if(curElementBuffer != buffer)
1405          {
1406             glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer);
1407             curElementBuffer = buffer;
1408          }
1409          glBufferData(GL_ELEMENT_ARRAY_BUFFER, size, data, GL_STATIC_DRAW);  //GL_DYNAMIC_DRAW);
1410       }
1411    }
1412
1413    void free()
1414    {
1415       if(this != null)
1416       {
1417          glDeleteBuffers(1, &buffer);
1418          buffer = 0;
1419       }
1420    }
1421
1422    void draw(int primType, int count, int type, void * indices)
1423    {
1424       if(curElementBuffer != ((this != null) ? buffer : 0))
1425       {
1426          glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ((this != null) ? buffer : 0));
1427          curElementBuffer = ((this != null) ? buffer : 0);
1428       }
1429       glDrawElements(primType, count, type, indices);
1430    }
1431 };
1432
1433 public void GLGenBuffers(int count, GLAB * buffers)
1434 {
1435 #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
1436    glGenBuffers(count, (GLuint *)buffers);
1437 #else
1438 #if defined(__WIN32__)
1439    if(glGenBuffersARB)
1440 #endif
1441       glGenBuffersARB(count, (GLuint *)buffers);
1442 #endif
1443 }
1444
1445 public void GLDeleteBuffers(int count, GLAB * buffers)
1446 {
1447 #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
1448    glDeleteBuffers(count, (GLuint *)buffers);
1449 #else
1450 #if defined(__WIN32__)
1451    if(glDeleteBuffersARB)
1452 #endif
1453       glDeleteBuffersARB(count, (GLuint *)buffers);
1454 #endif
1455 }
1456
1457 void GLBindBuffer(int target, uint buffer)
1458 {
1459 #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
1460    glBindBuffer(target, buffer);
1461 #else
1462 #if defined(__WIN32__)
1463    if(glBindBufferARB)
1464 #endif
1465       glBindBufferARB(target, buffer);
1466 #endif
1467    if(target == GL_ARRAY_BUFFER_ARB)
1468       curArrayBuffer = buffer;
1469    else if(target == GL_ELEMENT_ARRAY_BUFFER_ARB)
1470       curElementBuffer = buffer;
1471 }
1472
1473 public void GLVertexPointer(int numCoords, int glType, int stride, void *ptr, int numVertices)
1474 {
1475 #ifdef _GLES
1476    if(glType == GL_DOUBLE)
1477       glesVertexPointerd(numCoords, stride, ptr, numVertices);
1478    else if(glType == GL_INT)
1479       glesVertexPointeri(numCoords, stride, ptr, numVertices);
1480    else
1481 #endif
1482       glVertexPointer(numCoords, glType, stride, ptr);
1483 }
1484
1485 public void GLBufferData(int type, GLenum target, int size, const GLvoid *data, GLenum usage)
1486 {
1487 #ifdef _GLES
1488    if(type == GL_DOUBLE)
1489       glesBufferDatad(target, size, (void *)data, usage);
1490    else if(type == GL_UNSIGNED_INT)
1491       glesBufferDatai(target, size, (void *)data, usage);
1492    else
1493 #endif
1494
1495 #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
1496       glBufferData(target, size, data, usage);
1497 #else
1498
1499 #if defined(__WIN32__)
1500    if(glBufferDataARB)
1501 #endif
1502       glBufferDataARB(target, size, data, usage);
1503 #endif
1504 }
1505
1506 #if !defined(ECERE_NO3D) && !defined(ECERE_VANILLA)
1507 static int primitiveTypes[RenderPrimitiveType] =
1508 {
1509    GL_POINTS, GL_LINES, GL_TRIANGLES, GL_TRIANGLE_STRIP, GL_TRIANGLE_FAN, GL_QUADS, GL_QUAD_STRIP, GL_LINE_STRIP
1510 };
1511 #endif
1512
1513
1514 // Non OpenGL ES friendly stuff
1515
1516 #if defined(_GLES)
1517
1518 //#undef GL_UNSIGNED_INT
1519 //#undef GL_DOUBLE
1520 #undef GL_INT
1521 //#undef GL_POLYGON
1522 //#undef GL_QUADS
1523 #undef GL_QUAD_STRIP
1524 #undef GL_POLYGON_STIPPLE
1525 #undef GL_LINE_STIPPLE
1526 #undef GL_LINE
1527 #undef GL_FILL
1528 #undef GL_ALL_ATTRIB_BITS
1529 #undef GL_LIGHT_MODEL_LOCAL_VIEWER
1530
1531 #endif
1532
1533 static int displayWidth, displayHeight;
1534
1535 #define GL_CLAMP_TO_EDGE 0x812F
1536
1537 static bool vboAvailable;
1538
1539 static bool useSingleGLContext = false;
1540 class OGLDisplay : struct
1541 {
1542 #if defined(__WIN32__)
1543    HDC hdc;
1544    HGLRC glrc;
1545
1546    HBITMAP memBitmap;
1547    HDC memDC;
1548    byte * picture;
1549    uint stride;
1550    void * pBuffer;
1551    /*
1552    int imageBuffers[2];
1553    byte * pboMemory1, * pboMemory2;
1554    */
1555 #elif !defined(__ANDROID__) && !defined(__EMSCRIPTEN__) && !defined(__ODROID__)
1556    GLXContext glContext;
1557
1558    Pixmap pixmap;
1559    XShmSegmentInfo shminfo;
1560    XImage * image;
1561    XShmSegmentInfo shminfoShape;
1562    XImage * shapeImage;
1563    byte * picture;
1564    uint stride;
1565    GLXPbuffer pBuffer;
1566    X11Picture windowPicture;
1567    X11Picture pixmapPicture;
1568    Pixmap shapePixmap;
1569    X11Picture shapePicture;
1570 #endif
1571
1572    ColorAlpha * flippingBuffer;
1573    int flipBufH, flipBufW;
1574    bool depthWrite;
1575    int x, y;
1576 };
1577
1578 class OGLSystem : struct
1579 {
1580    int maxTextureSize;
1581    bool loadingFont;
1582    bool pow2textures;
1583 #if defined(__WIN32__)
1584    PIXELFORMATDESCRIPTOR pfd;
1585    int format;
1586    HDC hdc;
1587    HGLRC glrc;
1588    HWND hwnd;
1589 #elif !defined(__ANDROID__) && !defined(__EMSCRIPTEN__) && !defined(__ODROID__)
1590    XVisualInfo * visualInfo;
1591    GLXContext glContext;
1592    GLXDrawable glxDrawable;
1593 #endif
1594 };
1595
1596 class OGLSurface : struct
1597 {
1598    Font font;
1599    bool opaqueText;
1600    int xOffset;
1601    bool writingText;
1602    bool writingOutline;
1603
1604    float foreground[4], background[4], bitmapMult[4];
1605 } OGLSurface;
1606
1607 class OGLMesh : struct
1608 {
1609    GLAB vertices;
1610    GLAB normals;
1611    GLAB texCoords;
1612    GLAB texCoords2;
1613    GLAB colors;
1614 };
1615
1616 class OGLIndices : struct
1617 {
1618    uint16 * indices;
1619    GLEAB buffer;
1620    uint nIndices;
1621 };
1622
1623 int current;
1624 void * previous;
1625
1626 class OpenGLDisplayDriver : DisplayDriver
1627 {
1628    class_property(name) = "OpenGL";
1629
1630    bool LockSystem(DisplaySystem displaySystem)
1631    {
1632 #if !defined(__ANDROID__) && !defined(__EMSCRIPTEN__) && !defined(__ODROID__)
1633       OGLSystem oglSystem = displaySystem.driverData;
1634       if(useSingleGLContext) return true;
1635    #if defined(__WIN32__)
1636       wglMakeCurrent(oglSystem.hdc, oglSystem.glrc);
1637    #elif defined(__unix__) || defined(__APPLE__)
1638       //if(previous) return true;
1639       // printf("Making SYSTEM current\n");
1640       glXMakeCurrent(xGlobalDisplay, (GLXDrawable)oglSystem.glxDrawable, oglSystem.glContext);
1641       //previous = oglSystem.glContext;
1642    #endif
1643 #endif
1644       return true;
1645    }
1646
1647    void UnlockSystem(DisplaySystem displaySystem)
1648    {
1649       if(useSingleGLContext) return;
1650    #if defined(__WIN32__)
1651       wglMakeCurrent(null, null);
1652    #elif defined(__unix__) || defined(__APPLE__)
1653       // printf("Making NULL current\n");
1654       #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
1655       #else
1656       glXMakeCurrent(xGlobalDisplay, None, null);
1657       #endif
1658       // previous = null;
1659    #endif
1660    }
1661
1662    bool Lock(Display display)
1663    {
1664 #if !defined(__ANDROID__) && !defined(__EMSCRIPTEN__) && !defined(__ODROID__)
1665       OGLDisplay oglDisplay = display.driverData;
1666       if(useSingleGLContext) return true;
1667    #if defined(__WIN32__)
1668       wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
1669    #elif defined(__unix__) || defined(__APPLE__)
1670       // if(previous) glXMakeCurrent(xGlobalDisplay, None, null);
1671       // printf("   Making DISPLAY current\n");
1672       glXMakeCurrent(xGlobalDisplay, (GLXDrawable)display.window, oglDisplay.glContext);
1673    #endif
1674 #endif
1675       return true;
1676    }
1677
1678    void Unlock(Display display)
1679    {
1680       if(useSingleGLContext) return;
1681       //printf("   Making NULL current\n");
1682       //glXMakeCurrent(xGlobalDisplay, None, null);
1683       // if(previous)
1684          LockSystem(display.displaySystem);
1685    }
1686
1687    void DestroyDisplay(Display display)
1688    {
1689       OGLDisplay oglDisplay = display.driverData;
1690
1691       if(oglDisplay)
1692       {
1693    #if defined(__WIN32__)
1694          wglMakeCurrent( null, null );
1695
1696          if(oglDisplay.glrc)
1697             wglDeleteContext(oglDisplay.glrc);
1698
1699          if(oglDisplay.hdc && oglDisplay.pBuffer)
1700             wglReleasePbufferDCARB(oglDisplay.pBuffer, oglDisplay.hdc);
1701
1702          if(oglDisplay.pBuffer)
1703             wglDestroyPbufferARB(oglDisplay.pBuffer);
1704
1705          if(oglDisplay.hdc)
1706             ReleaseDC(display.window, oglDisplay.hdc);
1707
1708          if(oglDisplay.memDC) DeleteDC(oglDisplay.memDC);
1709          if(oglDisplay.memBitmap) DeleteObject(oglDisplay.memBitmap);
1710
1711    #elif defined(__unix__) || defined(__APPLE__)
1712       #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
1713       #else
1714          if(oglDisplay.shapePixmap)
1715             XFreePixmap(xGlobalDisplay, oglDisplay.shapePixmap);
1716          if(oglDisplay.pixmap)
1717             XFreePixmap(xGlobalDisplay, oglDisplay.pixmap);
1718          if(oglDisplay.image)
1719          {
1720             if(oglDisplay.shminfoShape.shmid != -1)
1721             {
1722                XShmDetach(xGlobalDisplay, &oglDisplay.shminfo);
1723                if(oglDisplay.shminfo.shmaddr != (void *)-1)
1724                   shmdt(oglDisplay.shminfo.shmaddr);
1725                shmctl(oglDisplay.shminfo.shmid, IPC_RMID, 0);
1726             }
1727          }
1728          if(oglDisplay.shapeImage)
1729          {
1730             if(oglDisplay.shminfoShape.shmid != -1)
1731             {
1732                XShmDetach(xGlobalDisplay, &oglDisplay.shminfoShape);
1733                if(oglDisplay.shminfoShape.shmaddr != (void *)-1)
1734                   shmdt(oglDisplay.shminfoShape.shmaddr);
1735                shmctl(oglDisplay.shminfoShape.shmid, IPC_RMID, 0);
1736             }
1737             XDestroyImage(oglDisplay.shapeImage);
1738             oglDisplay.shapeImage = None;
1739          }
1740
1741          glXMakeCurrent(xGlobalDisplay, None, null);
1742
1743          if(oglDisplay.glContext)
1744             glXDestroyContext(xGlobalDisplay, oglDisplay.glContext);
1745       #endif
1746    #endif
1747          delete oglDisplay.flippingBuffer;
1748          delete oglDisplay;
1749          display.driverData = null;
1750       }
1751    }
1752
1753    void ::CheckExtensions(OGLSystem oglSystem)
1754    {
1755       const char * extensions = (const char *)glGetString(GL_EXTENSIONS);
1756       if(extensions)
1757          oglSystem.pow2textures = strstr(extensions, "GL_ARB_texture_non_power_of_two") ? false : true;
1758       glGetIntegerv(GL_MAX_TEXTURE_SIZE, &oglSystem.maxTextureSize);
1759    }
1760
1761    bool CreateDisplaySystem(DisplaySystem displaySystem)
1762    {
1763       bool result = false;
1764       OGLSystem oglSystem = displaySystem.driverData = OGLSystem { };
1765
1766    #ifdef __WIN32__
1767       oglSystem.hwnd = CreateWindow("static", null, 0,0,0,0,0,null,null,null,null);
1768
1769       oglSystem.hdc = GetDC(oglSystem.hwnd);
1770       if(oglSystem.hdc)
1771       {
1772
1773          oglSystem.pfd.nSize = (short)sizeof(oglSystem.pfd);
1774          oglSystem.pfd.nVersion = 1;
1775          oglSystem.pfd.dwFlags = PFD_DRAW_TO_WINDOW /*PFD_DRAW_TO_BITMAP*/ | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
1776          oglSystem.pfd.iPixelType = PFD_TYPE_RGBA;
1777          oglSystem.pfd.cColorBits = 24;
1778          oglSystem.pfd.cAlphaBits = 8;
1779          oglSystem.pfd.cDepthBits = 24;
1780          oglSystem.pfd.iLayerType = PFD_MAIN_PLANE;
1781
1782          oglSystem.format = ChoosePixelFormat(oglSystem.hdc, &oglSystem.pfd);
1783          DescribePixelFormat(oglSystem.hdc, oglSystem.format, sizeof(oglSystem.pfd), &oglSystem.pfd);
1784
1785          if(oglSystem.pfd.cColorBits > 8)
1786          {
1787             SetPixelFormat(oglSystem.hdc, oglSystem.format, &oglSystem.pfd);
1788             oglSystem.glrc = wglCreateContext(oglSystem.hdc);
1789             if(oglSystem.glrc)
1790             {
1791                wglMakeCurrent(oglSystem.hdc, oglSystem.glrc);
1792
1793                  // Get Pointers To The GL Functions
1794                glActiveTextureARB = (void *) wglGetProcAddress("glActiveTextureARB");
1795                glMultiTexCoord2fARB = (void *) wglGetProcAddress("glMultiTexCoord2fARB");
1796                glClientActiveTextureARB = (void *) wglGetProcAddress("glClientActiveTextureARB");
1797                glLockArraysEXT = (void *) wglGetProcAddress("glLockArraysEXT" );
1798                glUnlockArraysEXT = (void *) wglGetProcAddress("glUnlockArraysEXT");
1799                  glGenBuffersARB = (void *) wglGetProcAddress("glGenBuffersARB");
1800                  glBindBufferARB = (void *) wglGetProcAddress("glBindBufferARB");
1801                  glBufferDataARB = (void *) wglGetProcAddress("glBufferDataARB");
1802                glMapBufferARB  = (void *) wglGetProcAddress("glMapBufferARB");
1803                glUnmapBufferARB  = (void *) wglGetProcAddress("glUnmapBufferARB");
1804                  glDeleteBuffersARB = (void *) wglGetProcAddress("glDeleteBuffersARB");
1805                glBlendFuncSeparate = (void *) wglGetProcAddress("glBlendFuncSeparate");
1806
1807                wglChoosePixelFormatARB = (void *) wglGetProcAddress("wglChoosePixelFormatARB");
1808                wglGetExtensionsStringARB = (void *)wglGetProcAddress("wglGetExtensionsStringARB");
1809                wglCreatePbufferARB = (void *)wglGetProcAddress("wglCreatePbufferARB");
1810                wglGetPbufferDCARB = (void *)wglGetProcAddress("wglGetPbufferDCARB");
1811                wglQueryPbufferARB = (void *)wglGetProcAddress("wglQueryPbufferARB");
1812                wglDestroyPbufferARB = (void *)wglGetProcAddress("wglDestroyPbufferARB");
1813                wglReleasePbufferDCARB = (void *)wglGetProcAddress("wglReleasePbufferDCARB");
1814                wglBindTexImageARB = (void *)wglGetProcAddress("wglBindTexImageARB");
1815                wglReleaseTexImageARB = (void *)wglGetProcAddress("wglReleaseTexImageARB");
1816
1817                wglSwapIntervalEXT = (void *)wglGetProcAddress("wglSwapIntervalEXT");
1818
1819                vboAvailable = glBindBufferARB != null;
1820
1821                // eSystem_LoggingMode(LOG_MSGBOX, null);
1822
1823                if(wglChoosePixelFormatARB)
1824                {
1825                     int pixelFormat;
1826                     int valid;
1827                     int numFormats;
1828                     float fAttributes[] = {0,0};
1829                     int iAttributes[] =
1830                   {
1831                      WGL_DRAW_TO_WINDOW_ARB,GL_TRUE,
1832                             WGL_SUPPORT_OPENGL_ARB,GL_TRUE,
1833                             WGL_ACCELERATION_ARB,WGL_FULL_ACCELERATION_ARB,
1834                             WGL_COLOR_BITS_ARB,24,
1835                             WGL_ALPHA_BITS_ARB,8,
1836                             WGL_DEPTH_BITS_ARB,16,
1837                             WGL_STENCIL_BITS_ARB,0,
1838                             WGL_DOUBLE_BUFFER_ARB,GL_TRUE,
1839                             WGL_SAMPLE_BUFFERS_ARB,GL_TRUE,
1840                             WGL_SAMPLES_ARB, 4,                                         // Check For 4x Multisampling
1841                             0,0
1842                   };
1843
1844                   //Log("Found wglChoosePixelFormatARB\n");
1845
1846                     valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1847                     if(!valid || !numFormats)
1848                     {
1849                      //Log("Can't find 4x multi sampling\n");
1850                        iAttributes[19] = 2;
1851                        valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1852                      if(!valid || !numFormats)
1853                      {
1854                         // Log("Can't find 2x multi sampling\n");
1855                         iAttributes[16] = 0;
1856                         iAttributes[17] = 0;
1857                         valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1858                      }
1859                     }
1860                   if(valid && numFormats)
1861                   {
1862                      oglSystem.format = pixelFormat;
1863                      wglMakeCurrent(null, null);
1864                      wglDeleteContext(oglSystem.glrc);
1865
1866                      // *** DescribePixelFormat does not support WGL pixel formats! ***
1867                      //DescribePixelFormat(oglSystem.hdc, oglSystem.format, sizeof(oglSystem.pfd), &oglSystem.pfd);
1868                      SetPixelFormat(oglSystem.hdc, oglSystem.format, &oglSystem.pfd);
1869                      //Log("Successfully set pixel format\n");
1870
1871                      oglSystem.glrc = wglCreateContext(oglSystem.hdc);
1872                      wglMakeCurrent(oglSystem.hdc, oglSystem.glrc);
1873                   }
1874                }
1875                /*else
1876                   eSystem_Logf("Can't find wglChoosePixelFormatARB\n");*/
1877
1878                result = true;
1879
1880                CheckExtensions(oglSystem);
1881
1882                wglMakeCurrent(null, null);
1883
1884                //eSystem_DumpErrors(true);
1885             }
1886          }
1887       }
1888    #elif defined(__unix__) || defined(__APPLE__)
1889       vboAvailable = true;
1890       #if defined(__ANDROID__)
1891          egl_init_display(guiApp.desktop.windowHandle);
1892       #elif defined(__ODROID__)
1893          egl_init_display((uint)displaySystem.window);
1894          CheckExtensions(oglSystem);
1895          result = true;
1896       #elif defined(__EMSCRIPTEN__)
1897          if(glfwInit() == GL_TRUE)
1898          {
1899             const int width = 640, height = 480;
1900             if(glfwOpenWindow(width, height, 8, 8, 8, 8, 16, 0, GLFW_WINDOW) == GL_TRUE)
1901             {
1902                //glfwSwapBuffers();
1903                result = true;
1904             }
1905             else
1906                printf("glfwOpenWindow() failed\n"); //glfwTerminate();
1907          }
1908          else
1909             printf("glfwInit() failed\n"); //glfwTerminate();
1910       #else
1911       {
1912          X11Window root = RootWindow( xGlobalDisplay, DefaultScreen( xGlobalDisplay ) );
1913          XSetWindowAttributes attr;
1914          unsigned long mask;
1915
1916          int attrList[] =
1917          {
1918       #ifndef ECERE_MINIGLX
1919             GLX_USE_GL, GLX_DEPTH_SIZE, 1,
1920       #endif
1921             GLX_RGBA,
1922             GLX_RED_SIZE, 1, GLX_GREEN_SIZE, 1, GLX_BLUE_SIZE, 1,
1923             GLX_DOUBLEBUFFER,
1924             None
1925          };
1926          oglSystem.visualInfo = glXChooseVisual( xGlobalDisplay,  DefaultScreen( xGlobalDisplay ), attrList );
1927          attr.background_pixel = 0;
1928          attr.border_pixel = 0;
1929          attr.colormap = XCreateColormap( xGlobalDisplay, root, oglSystem.visualInfo->visual, AllocNone);
1930          attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
1931          mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
1932
1933          oglSystem.glxDrawable = XCreateWindow( xGlobalDisplay, root, 0, 0, 1, 1, 0, oglSystem.visualInfo->depth, InputOutput,
1934             oglSystem.visualInfo->visual, mask, &attr );
1935       }
1936       if(oglSystem.visualInfo)
1937       {
1938          oglSystem.glContext = glXCreateContext(xGlobalDisplay, oglSystem.visualInfo, null, True);
1939          if(oglSystem.glContext)
1940          {
1941             glXMakeCurrent(xGlobalDisplay, oglSystem.glxDrawable, oglSystem.glContext);
1942             // Setup Extensions
1943             CheckExtensions(oglSystem);
1944             glXMakeCurrent(xGlobalDisplay, None, null);
1945             result = true;
1946          }
1947       }
1948       #endif
1949    #endif
1950
1951       displaySystem.flags.alpha = true;
1952       displaySystem.flags.flipping = true;
1953       displaySystem.pixelFormat = pixelFormat888;
1954       return result;
1955    }
1956
1957    void DestroyDisplaySystem(DisplaySystem displaySystem)
1958    {
1959       OGLSystem oglSystem = displaySystem.driverData;
1960
1961    #if defined(__WIN32__)
1962       wglMakeCurrent( null, null );
1963
1964       if(oglSystem.glrc)
1965          wglDeleteContext(oglSystem.glrc);
1966
1967       if(oglSystem.hdc)
1968          ReleaseDC(oglSystem.hwnd, oglSystem.hdc);
1969       DestroyWindow(oglSystem.hwnd);
1970
1971    #elif defined(__unix__) || defined(__APPLE__)
1972       #if defined(__ANDROID__) || defined(__ODROID__)
1973          egl_term_display();
1974       #elif defined(__EMSCRIPTEN__)
1975          glfwTerminate();
1976       #else
1977       if(oglSystem.visualInfo)
1978       {
1979    #ifdef   ECERE_MINIGLX
1980          __miniglx_XFree(oglSystem.visualInfo);
1981    #else
1982          XFree(oglSystem.visualInfo);
1983    #endif
1984       }
1985
1986       if(oglSystem.glxDrawable)
1987       {
1988          XDestroyWindow(xGlobalDisplay, oglSystem.glxDrawable);
1989          oglSystem.glxDrawable = 0;
1990       }
1991       #endif
1992    #endif
1993       delete oglSystem;
1994    }
1995
1996    bool CreateDisplay(Display display)
1997    {
1998       bool result = false;
1999       OGLDisplay oglDisplay = display.driverData;
2000 #if !defined(__ANDROID__) && !defined(__EMSCRIPTEN__) && !defined(__ODROID__)
2001       OGLSystem oglSystem = display.displaySystem.driverData;
2002 #endif
2003       if(!oglDisplay)
2004          oglDisplay = display.driverData = OGLDisplay { };
2005       //printf("Inside CreateDisplay\n");
2006
2007 #if defined(__WIN32__) || defined(USEPBUFFER)
2008       if(!display.alphaBlend)
2009 #endif
2010       {
2011    #if defined(__WIN32__)
2012          oglDisplay.hdc = GetDC(display.window);
2013          SetPixelFormat(oglDisplay.hdc, oglSystem.format, &oglSystem.pfd);
2014          if((oglDisplay.glrc = wglCreateContext(oglDisplay.hdc)))
2015          {
2016             wglShareLists(oglSystem.glrc, oglDisplay.glrc);
2017             wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
2018             result = true;
2019          }
2020          else
2021             ReleaseDC(display.window, oglDisplay.hdc);
2022    #elif defined(__unix__) || defined(__APPLE__)
2023       #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
2024       #else
2025          XVisualInfo * visualInfo = ((XWindowData)display.windowDriverData).visual;
2026          /*
2027 #if defined(__APPLE__)
2028          XVisualInfo template = { 0 };
2029          XWindowAttributes winAttr;
2030          int n;
2031          XGetWindowAttributes(xGlobalDisplay, (X11Window)display.window, &winAttr);
2032          template.visualid = XVisualIDFromVisual(winAttr.visual);
2033          visualInfo = XGetVisualInfo(xGlobalDisplay, VisualIDMask, &template, &n);
2034 #ifdef _DEBUG
2035          printf("XGetVisualInfo visual ID = %d\n", template.visualid);
2036          printf("visualInfo visual ID = %d\n", visualInfo->visualid);
2037          printf("oglSystem.visualInfo visual ID = %d\n", oglSystem.visualInfo->visualid);
2038          printf("((XWindowData)display.windowDriverData).visual visual ID = %d\n", ((XWindowData)display.windowDriverData).visual->visualid);
2039 #endif
2040          // visualInfo = oglSystem.visualInfo;
2041 //#endif
2042          */
2043          if(visualInfo)
2044          {
2045             //printf("visualInfo is not null\n");
2046             // printf("Creating Display Context, sharing with %x!\n", oglSystem.glContext);
2047             oglDisplay.glContext = glXCreateContext(xGlobalDisplay, visualInfo, oglSystem.glContext, True);
2048             //XFree(visualInfo);
2049          }
2050
2051          // oglDisplay.glContext = glXCreateContext(xGlobalDisplay, oglSystem.visualInfo, oglSystem.glContext, True);
2052          if(oglDisplay.glContext)
2053          {
2054             //printf("CreateDisplay Got a Context\n");
2055             glXMakeCurrent(xGlobalDisplay, (GLXDrawable)display.window, oglDisplay.glContext);
2056             result = true;
2057          }
2058       #endif
2059    #endif
2060       }
2061 #if defined(__WIN32__) || defined(USEPBUFFER)
2062       else
2063          result = true;
2064 #endif
2065       if(result)
2066       {
2067 #if defined(__WIN32__)
2068          if(glBlendFuncSeparate)
2069             glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
2070          else
2071             glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2072 #else
2073 #if !defined(__OLDX__)
2074           glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
2075 #else
2076          glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2077 #endif
2078 #endif
2079          glEnable(GL_BLEND);
2080
2081          glMatrixMode(GL_MODELVIEW);
2082          glScaled(1.0, 1.0, -1.0);
2083          // glTranslatef(0.375f, 0.375f, 0.0f);
2084          // glTranslatef(-0.625f, -0.625f, 0.0f);
2085          glMatrixMode(GL_PROJECTION);
2086          glShadeModel(GL_FLAT);
2087
2088          // glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, true);
2089 #if !defined(EM_MODE)
2090          glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
2091 #endif
2092          glFogi(GL_FOG_MODE, GL_EXP);
2093          glFogf(GL_FOG_DENSITY, 0);
2094          glEnable(GL_NORMALIZE);
2095          glDepthFunc(GL_LESS);
2096          glClearDepth(1.0);
2097          glDisable(GL_MULTISAMPLE_ARB);
2098       }
2099 #if !defined(ECERE_NO3D) && !defined(ECERE_VANILLA)
2100       display.ambient = Color { 50,50,50 };
2101 #endif
2102
2103       if(!useSingleGLContext)
2104       {
2105    #if defined(__WIN32__)
2106          wglMakeCurrent(null, null);
2107    #elif defined(__unix__) || defined(__APPLE__)
2108       #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
2109          result = true;
2110       #else
2111          glXMakeCurrent(xGlobalDisplay, None, null);
2112       #endif
2113    #endif
2114       }
2115       else
2116       {
2117       #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
2118          result = true;
2119       #endif
2120       }
2121
2122       return result;
2123    }
2124
2125    bool DisplaySize(Display display, int width, int height)
2126    {
2127       OGLDisplay oglDisplay = display.driverData;
2128
2129       bool result = false;
2130
2131       //printf("Inside DisplaySize\n");
2132 #if defined(__WIN32__) || defined(USEPBUFFER)
2133       OGLSystem oglSystem = display.displaySystem.driverData;
2134       if(display.alphaBlend)
2135       {
2136 #if defined(__WIN32__)
2137          const int attributes[]=
2138          {
2139             /*WGL_TEXTURE_FORMAT_ARB, WGL_TEXTURE_RGBA_ARB,
2140             WGL_TEXTURE_TARGET_ARB, WGL_TEXTURE_2D_ARB, */0
2141          };
2142          int pixelFormat = 0;
2143          if(wglChoosePixelFormatARB)
2144          {
2145             int valid;
2146             int numFormats;
2147             float fAttributes[] = {0,0};
2148             int iAttributes[] =
2149             {
2150                //WGL_DRAW_TO_BITMAP_ARB, GL_TRUE,
2151                WGL_DRAW_TO_PBUFFER_ARB,GL_TRUE,
2152                     WGL_SUPPORT_OPENGL_ARB,GL_TRUE,
2153                     WGL_ACCELERATION_ARB,WGL_FULL_ACCELERATION_ARB,
2154                     WGL_COLOR_BITS_ARB,24,
2155                     WGL_ALPHA_BITS_ARB,8,
2156                     WGL_DEPTH_BITS_ARB,16,
2157                     WGL_STENCIL_BITS_ARB,0,
2158                     WGL_DOUBLE_BUFFER_ARB,GL_FALSE,
2159                     WGL_SAMPLE_BUFFERS_ARB,GL_TRUE,
2160                     WGL_SAMPLES_ARB, 4,                                         // Check For 4x Multisampling
2161                     0,0
2162             };
2163
2164             //Log("Found wglChoosePixelFormatARB\n");
2165
2166             valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
2167             if(!valid || !numFormats)
2168             {
2169                //Log("Can't find 4x multi sampling\n");
2170                iAttributes[19] = 2;
2171                valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
2172                if(!valid || !numFormats)
2173                {
2174                   // Log("Can't find 2x multi sampling\n");
2175                   iAttributes[16] = 0;
2176                   iAttributes[17] = 0;
2177                   valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
2178                   if(!valid || !numFormats)
2179                   {
2180                      int iAttributes[] =
2181                      {
2182                         WGL_DRAW_TO_PBUFFER_ARB,GL_TRUE,
2183                         //WGL_DRAW_TO_BITMAP_ARB,GL_TRUE,
2184                         WGL_SUPPORT_OPENGL_ARB,GL_TRUE,
2185                         WGL_COLOR_BITS_ARB,24,
2186                         WGL_ALPHA_BITS_ARB,8,
2187                         WGL_DEPTH_BITS_ARB,16,
2188                         0,0
2189                      };
2190                      valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
2191                   }
2192                }
2193             }
2194             if(valid && numFormats)
2195             {
2196                wglMakeCurrent(null, null);
2197             }
2198          }
2199
2200          wglMakeCurrent( null, null );
2201          wglMakeCurrent( oglDisplay.hdc, oglDisplay.glrc );
2202          if(oglDisplay.hdc && oglDisplay.pBuffer)
2203             wglReleasePbufferDCARB(oglDisplay.pBuffer, oglDisplay.hdc);
2204
2205          wglDestroyPbufferARB(oglDisplay.pBuffer);
2206
2207          if(!useSingleGLContext)
2208             wglMakeCurrent( null, null );
2209
2210          if(oglDisplay.glrc)
2211             wglDeleteContext(oglDisplay.glrc);
2212
2213          oglDisplay.pBuffer = wglCreatePbufferARB(oglSystem.hdc, pixelFormat, width, height, attributes);
2214          oglDisplay.hdc = wglGetPbufferDCARB(oglDisplay.pBuffer);
2215          if((oglDisplay.glrc = wglCreateContext(oglDisplay.hdc)))
2216          {
2217             BITMAPINFO * info;
2218             HDC hdc = GetDC(display.window);
2219
2220             wglShareLists(oglSystem.glrc, oglDisplay.glrc);
2221             wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
2222
2223             //wglQueryPbufferARB(pBuffer, WGL_PBUFFER_WIDTH_ARB, &width);
2224             //wglQueryPbufferARB(pBuffer, WGL_PBUFFER_HEIGHT_ARB, &height);
2225
2226             // glDeleteBuffersARB(2, oglDisplay.imageBuffers);
2227
2228             if((info = (BITMAPINFO *)new0 byte[sizeof(BITMAPINFOHEADER)+sizeof(RGBQUAD)*256]))
2229             {
2230                HBITMAP newBitmap;
2231
2232                if(oglDisplay.memDC) DeleteDC(oglDisplay.memDC);
2233                oglDisplay.memDC = CreateCompatibleDC(hdc);
2234                SetMapMode(oglDisplay.memDC, MM_TEXT);
2235                info->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
2236                info->bmiHeader.biPlanes = 1;
2237                info->bmiHeader.biCompression = BI_RGB;
2238                info->bmiHeader.biBitCount = 32; //(uint16)GetDeviceCaps(hdc, BITSPIXEL);
2239                info->bmiHeader.biWidth = width;
2240                info->bmiHeader.biHeight = height;
2241                newBitmap = CreateDIBSection(hdc, info, DIB_RGB_COLORS, &oglDisplay.picture, null, 0);
2242                if(newBitmap)
2243                {
2244                   SelectObject(oglDisplay.memDC, newBitmap);
2245                   if(oglDisplay.memBitmap) DeleteObject(oglDisplay.memBitmap);
2246                   /*
2247                   {
2248                      PIXELFORMATDESCRIPTOR pfd = { 0 };
2249                      pfd.nSize = (short)sizeof(pfd);
2250                      pfd.nVersion = 1;
2251                      pfd.dwFlags = PFD_DRAW_TO_BITMAP | PFD_SUPPORT_OPENGL;
2252                      pfd.iPixelType = PFD_TYPE_RGBA;
2253                      pfd.cColorBits = 32;
2254                      //pfd.cAlphaBits = 8;
2255                      pfd.cDepthBits = 24;
2256                      pfd.iLayerType = PFD_MAIN_PLANE;
2257
2258                      oglDisplay.hdc = oglDisplay.memDC;
2259
2260                      pixelFormat = ChoosePixelFormat(oglSystem.hdc, &pfd);
2261                      DescribePixelFormat(oglDisplay.hdc, pixelFormat, sizeof(pfd), &pfd);
2262                      SetPixelFormat(oglDisplay.hdc, pixelFormat, &pfd);
2263
2264                      oglDisplay.glrc = wglCreateContext(oglDisplay.hdc);
2265                      wglShareLists(oglSystem.glrc, oglDisplay.glrc);
2266                      wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
2267                   }
2268                   */
2269                   /*
2270                   {
2271                      const int imageSize = width * height * 4;
2272
2273                      glGenBuffersARB(2, oglDisplay.imageBuffers);
2274
2275                      glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2276                      glBufferDataARB(GL_PIXEL_PACK_BUFFER_ARB, imageSize, null, GL_STREAM_READ);
2277                      // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2278                      // glBufferDataARB(GL_PIXEL_PACK_BUFFER_ARB, imageSize / 2, null, GL_STREAM_READ);
2279                   }
2280                   */
2281                   oglDisplay.memBitmap = newBitmap;
2282                   oglDisplay.stride = width;
2283
2284                   result = true;
2285                }
2286                delete info;
2287             }
2288             ReleaseDC(display.window, hdc);
2289          }
2290 #elif defined(__unix__) || defined(__APPLE__)
2291       #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
2292          result = true;
2293       #else
2294         int attrib[] =
2295         {
2296                 GLX_DOUBLEBUFFER,  True,
2297             GLX_DEPTH_SIZE,    1,
2298                 GLX_RED_SIZE,      8,
2299                 GLX_GREEN_SIZE,    8,
2300                 GLX_BLUE_SIZE,     8,
2301                 GLX_ALPHA_SIZE,    8,
2302                 GLX_STENCIL_SIZE,  1,
2303                 //GLX_DEPTH_SIZE,    24,
2304                 GLX_RENDER_TYPE,   GLX_RGBA_BIT,
2305                 GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT | GLX_WINDOW_BIT,
2306                 None
2307         };
2308
2309         int PBattrib[] =
2310         {
2311                 GLX_PBUFFER_WIDTH,   width,
2312                 GLX_PBUFFER_HEIGHT,  height,
2313                 GLX_LARGEST_PBUFFER, False,
2314             None
2315         };
2316
2317         // choose a pixel format that meets our minimum requirements
2318         int count = 0;
2319
2320         GLXFBConfig *config = glXChooseFBConfig(xGlobalDisplay, DefaultScreen(xGlobalDisplay), attrib, &count);
2321          if(config)
2322          {
2323             if(oglDisplay.pixmap)
2324             {
2325                XFreePixmap(xGlobalDisplay, oglDisplay.pixmap);
2326                oglDisplay.pixmap = None;
2327             }
2328             if(oglDisplay.shapePixmap)
2329             {
2330                XFreePixmap(xGlobalDisplay, oglDisplay.shapePixmap);
2331                oglDisplay.shapePixmap = None;
2332             }
2333
2334             // Free Shared Memory Pixmap
2335             if(oglDisplay.image)
2336             {
2337                if(oglDisplay.shminfoShape.shmid != -1)
2338                {
2339                   XShmDetach(xGlobalDisplay, &oglDisplay.shminfo);
2340                   if(oglDisplay.shminfo.shmaddr != (void *)-1)
2341                      shmdt(oglDisplay.shminfo.shmaddr);
2342                   shmctl(oglDisplay.shminfo.shmid, IPC_RMID, 0);
2343                }
2344                XDestroyImage(oglDisplay.image);
2345                oglDisplay.image = None;
2346             }
2347             if(oglDisplay.shapeImage)
2348             {
2349                if(oglDisplay.shminfoShape.shmid != -1)
2350                {
2351                   XShmDetach(xGlobalDisplay, &oglDisplay.shminfoShape);
2352                   if(oglDisplay.shminfoShape.shmaddr != (void *)-1)
2353                      shmdt(oglDisplay.shminfoShape.shmaddr);
2354                   shmctl(oglDisplay.shminfoShape.shmid, IPC_RMID, 0);
2355                }
2356                XDestroyImage(oglDisplay.shapeImage);
2357                oglDisplay.shapeImage = None;
2358             }
2359
2360             if(oglDisplay.windowPicture)
2361                XRenderFreePicture(xGlobalDisplay, oglDisplay.windowPicture);
2362             if(oglDisplay.pixmapPicture)
2363                XRenderFreePicture(xGlobalDisplay, oglDisplay.pixmapPicture);
2364
2365             if(oglDisplay.pixmap)
2366                XFreePixmap(xGlobalDisplay, oglDisplay.pixmap);
2367
2368             if(oglDisplay.glContext)
2369                   glXDestroyContext(xGlobalDisplay, oglDisplay.glContext);
2370             if(oglDisplay.pBuffer)
2371                glXDestroyPbuffer(xGlobalDisplay, oglDisplay.pBuffer);
2372
2373                 oglDisplay.pBuffer = glXCreatePbuffer(xGlobalDisplay, config[0], PBattrib);
2374             if(oglDisplay.pBuffer)
2375             {
2376                    oglDisplay.glContext = glXCreateNewContext(xGlobalDisplay, config[0], GLX_RGBA_TYPE, oglSystem.glContext, True);
2377                if(oglDisplay.glContext)
2378                {
2379                   glXMakeCurrent(xGlobalDisplay, None, null);
2380                   glXMakeCurrent(xGlobalDisplay, (GLXDrawable)display.window, oglDisplay.glContext);
2381
2382                   // Initialize Shared Memory Pixmap
2383                   oglDisplay.image = XShmCreateImage(xGlobalDisplay, DefaultVisual(xGlobalDisplay, DefaultScreen(xGlobalDisplay)), 32,
2384                      ZPixmap, null, &oglDisplay.shminfo, width, height);
2385                   if(oglDisplay.image)
2386                   {
2387                      oglDisplay.shminfo.shmid = shmget(IPC_PRIVATE,
2388                         oglDisplay.image->bytes_per_line * oglDisplay.image->height, IPC_CREAT|0777);
2389                      if(oglDisplay.shminfo.shmid != -1)
2390                      {
2391                         oglDisplay.shminfo.shmaddr = shmat(oglDisplay.shminfo.shmid, 0, 0);
2392                         if(oglDisplay.shminfo.shmaddr != (void *)-1)
2393                         {
2394                            oglDisplay.shminfo.readOnly = False;
2395                            if(XShmAttach(xGlobalDisplay, &oglDisplay.shminfo))
2396                            {
2397                               oglDisplay.pixmap = XShmCreatePixmap(xGlobalDisplay, (X11Window)display.window, oglDisplay.shminfo.shmaddr,
2398                                  &oglDisplay.shminfo, width, height, 32);
2399
2400                               // Initialize Shared Memory Shape Pixmap
2401                               oglDisplay.shapeImage = XShmCreateImage(xGlobalDisplay, DefaultVisual(xGlobalDisplay, DefaultScreen(xGlobalDisplay)), 1,
2402                                  ZPixmap, null, &oglDisplay.shminfoShape, width, height);
2403                               if(oglDisplay.shapeImage)
2404                               {
2405                                  oglDisplay.shminfoShape.shmid = shmget(IPC_PRIVATE,
2406                                     oglDisplay.shapeImage->bytes_per_line * oglDisplay.shapeImage->height, IPC_CREAT|0777);
2407                                  if(oglDisplay.shminfoShape.shmid != -1)
2408                                  {
2409                                     oglDisplay.shminfoShape.shmaddr = shmat(oglDisplay.shminfoShape.shmid, 0, 0);
2410                                     if(oglDisplay.shminfoShape.shmaddr != (void *)-1)
2411                                     {
2412                                        oglDisplay.shminfoShape.readOnly = False;
2413                                        if(XShmAttach(xGlobalDisplay, &oglDisplay.shminfoShape))
2414                                        {
2415                                           oglDisplay.shapePixmap = XShmCreatePixmap(xGlobalDisplay, (X11Window)display.window, oglDisplay.shminfoShape.shmaddr,
2416                                              &oglDisplay.shminfoShape, width, height, 1);
2417                                           //oglDisplay.shapePixmap = XCreatePixmap(xGlobalDisplay, (X11Window)display.window, width, height, 1);
2418
2419                                           {
2420                                              XRenderPictureAttributes attributes = { 0 };
2421                                              XRenderPictFormat * format = XRenderFindStandardFormat(xGlobalDisplay, /*PictStandardRGB24*/ PictStandardARGB32);
2422                                              #if !defined(__APPLE__) && !defined(__OLDX__)
2423                                              attributes.repeat = RepeatNormal;
2424                                              #else
2425                                              attributes.repeat = 1;
2426                                              #endif
2427                                              oglDisplay.pixmapPicture = XRenderCreatePicture(xGlobalDisplay, oglDisplay.pixmap, format, CPRepeat, &attributes);
2428                                              oglDisplay.windowPicture = XRenderCreatePicture(xGlobalDisplay, (X11Window)display.window, format, 0, &attributes);
2429                                              oglDisplay.shapePicture = XRenderCreatePicture(xGlobalDisplay, oglDisplay.shapePixmap,
2430                                                 XRenderFindStandardFormat(xGlobalDisplay, PictStandardA1), 0, &attributes);
2431                                           }
2432
2433                                           oglDisplay.picture = oglDisplay.shminfo.shmaddr;
2434                                           oglDisplay.stride = oglDisplay.image->bytes_per_line / 4;
2435
2436                                           result = true;
2437                                        }
2438                                     }
2439                                  }
2440                               }
2441                            }
2442                         }
2443                      }
2444                   }
2445                }
2446             }
2447             XFree(config);
2448          }
2449      #endif
2450 #endif
2451          CreateDisplay(display);
2452 #if defined(__WIN32__)
2453          wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
2454 #elif defined(__unix__) || defined(__APPLE__)
2455       #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
2456          width = eglWidth;
2457          height = eglHeight;
2458       #else
2459          glXMakeCurrent(xGlobalDisplay, (GLXDrawable)display.window, oglDisplay.glContext);
2460       #endif
2461 #endif
2462       }
2463       else
2464 #endif
2465          result = true;
2466       if(!result && display.alphaBlend)
2467       {
2468          printf("Alpha blending windows not supported on this display\n");
2469       }
2470       if(!result)
2471          return false;
2472
2473       result = false;
2474
2475       glViewport(0,0,width,height);
2476       glLoadIdentity();
2477       glOrtho(0,width,height,0,0.0,1.0);
2478       displayWidth = display.width = width;
2479       displayHeight = display.height = height;
2480
2481       if(!oglDisplay.flippingBuffer || oglDisplay.flipBufW < width || oglDisplay.flipBufH < height)
2482       {
2483          oglDisplay.flipBufW = width;
2484          oglDisplay.flipBufH = height;
2485 #ifdef _GLES
2486          result = true;
2487 #else
2488          oglDisplay.flippingBuffer = renew oglDisplay.flippingBuffer ColorAlpha [width * height];
2489 #endif
2490       }
2491       if(oglDisplay.flippingBuffer || !width || !height)
2492          result = true;
2493
2494       return result;
2495    }
2496
2497    void DisplayPosition(Display display, int x, int y)
2498    {
2499       OGLDisplay oglDisplay = display.driverData;
2500
2501       oglDisplay.x = x;
2502       oglDisplay.y = y;
2503    }
2504
2505    void SetPalette(Display display, ColorAlpha * palette, bool colorMatch)
2506    {
2507    }
2508
2509    void RestorePalette(Display display)
2510    {
2511    }
2512
2513    void StartUpdate(Display display)
2514    {
2515    }
2516
2517    void EndUpdate(Display display)
2518    {
2519    }
2520
2521    void Scroll(Display display, Box scroll, int x, int y, Extent dirty)
2522    {
2523    }
2524
2525    void Update(Display display, Box updateBox)
2526    {
2527 #if defined(__WIN32__) || defined(USEPBUFFER)
2528       OGLDisplay oglDisplay = display.driverData;
2529 #endif
2530       //Logf("DisplayScreen\n");
2531
2532       glFlush();
2533       glFinish();
2534 #if defined(__WIN32__) || defined(USEPBUFFER)
2535       if(display.alphaBlend)
2536       {
2537          glPixelStorei(GL_PACK_ALIGNMENT, 4);
2538          glPixelStorei(GL_PACK_ROW_LENGTH, oglDisplay.stride);
2539          glPixelStorei(GL_PACK_SKIP_ROWS, 0);
2540          glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
2541          glReadPixels(0,0,display.width,display.height,GL_BGRA_EXT,GL_UNSIGNED_BYTE, oglDisplay.picture);
2542
2543          {
2544 #if defined(__WIN32__)
2545             HDC hdc = GetDC(0);
2546             POINT point = { oglDisplay.x, oglDisplay.y};
2547             POINT srcPoint = { 0, 0 };
2548             BLENDFUNCTION blend = { 0 };
2549             SIZE size;
2550             size.cx = display.width;
2551             size.cy = display.height;
2552             blend.BlendOp = AC_SRC_OVER;
2553             blend.BlendFlags = 0;
2554             blend.SourceConstantAlpha = 255;
2555             blend.AlphaFormat = AC_SRC_ALPHA;
2556
2557             /*
2558             // Process partial images.  Mapping the buffer waits for
2559             // outstanding DMA transfers into the buffer to finish.
2560             glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2561             oglDisplay.pboMemory1 = (byte *)glMapBufferARB(GL_PIXEL_PACK_BUFFER_ARB, GL_READ_ONLY);
2562
2563             // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2564             // oglDisplay.pboMemory2 = (byte *)glMapBufferARB(GL_PIXEL_PACK_BUFFER_ARB,GL_READ_ONLY);
2565
2566
2567             memcpy(oglDisplay.picture, oglDisplay.pboMemory1, display.width * display.height * 4);
2568             //memcpy(oglDisplay.picture + display.width * display.height * 4 / 2, oglDisplay.pboMemory2, display.width * display.height * 4/ 2);
2569             */
2570
2571             UpdateLayeredWindow(display.window, hdc, &point, &size, oglDisplay.memDC, &srcPoint, 0, &blend, ULW_ALPHA);
2572             /*
2573
2574             // Unmap the image buffers
2575             glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2576             glUnmapBufferARB(GL_PIXEL_PACK_BUFFER_ARB);
2577
2578             // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2579             // glUnmapBufferARB(GL_PIXEL_PACK_BUFFER_ARB);
2580
2581             // Bind two different buffer objects and start the glReadPixels
2582             // asynchronously. Each call will return directly after
2583             // starting the DMA transfer.
2584             glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2585             glReadPixels(0, 0, display.width, display.height, GL_BGRA, GL_UNSIGNED_BYTE, 0);
2586
2587             // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2588             // glReadPixels(0, display.height/2, display.width, display.height/2, GL_BGRA, GL_UNSIGNED_BYTE, 0);
2589             */
2590
2591             ReleaseDC(0, hdc);
2592 #elif defined(__unix__) || defined(__APPLE__)
2593       #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
2594       #else
2595             XTransform transform =
2596             {
2597                {
2598                   { (int)(1.0f * (1<<16)), (int)(0.0f * (1<<16)),  (int)(0 * (1 << 16)) },
2599                   { (int)(0.0f),           (int)(-1.0f * (1<<16)), (int)(0 * (1<<16)) },
2600                   { (int)(0.0f * (1<<16)), (int)(0.0f * (1<<16)),  (int)(1.0f * (1<<16)) }
2601                }
2602             };
2603             XRenderSetPictureTransform(xGlobalDisplay, oglDisplay.pixmapPicture, &transform);
2604             XRenderComposite(xGlobalDisplay, PictOpSrc, oglDisplay.pixmapPicture, None, oglDisplay.shapePicture, 0, 0, 0, 0, 0, 0, display.width, display.height);
2605             XRenderComposite(xGlobalDisplay, PictOpSrc, oglDisplay.pixmapPicture, None, oglDisplay.windowPicture, 0, 0, 0, 0, 0, 0, display.width, display.height);
2606             #if !defined(__APPLE__) && !defined(__OLDX__)
2607             XShapeCombineMask(xGlobalDisplay, (X11Window)display.window, ShapeInput, 0, 0, oglDisplay.shapePixmap, ShapeSet);
2608             #else
2609             XShapeCombineMask(xGlobalDisplay, display.window, 2, 0, 0, oglDisplay.shapePixmap, ShapeSet);
2610             #endif
2611             XFlush(xGlobalDisplay);
2612      #endif
2613 #endif
2614          }
2615       }
2616       else
2617 #endif
2618       {
2619 #if defined(__WIN32__)
2620          //wglSwapLayerBuffers(oglDisplay.hdc,WGL_SWAP_MAIN_PLANE);
2621          SwapBuffers(oglDisplay.hdc);
2622 #elif defined(__unix__) || defined(__APPLE__)
2623       #if defined(__ANDROID__) || defined(__ODROID__)
2624          eglSwapBuffers(eglDisplay, eglSurface);
2625       #elif defined(__EMSCRIPTEN__)
2626          glfwSwapBuffers();
2627       #else
2628          glXSwapBuffers(xGlobalDisplay, (GLXDrawable)display.window);
2629       #endif
2630 #endif
2631       }
2632       //Logf("Out of DisplayScreen\n");
2633    }
2634
2635    void FreeBitmap(DisplaySystem displaySystem, Bitmap bitmap)
2636    {
2637       if(bitmap.driverData)
2638       {
2639          GLuint tex = (GLuint)(uintptr)bitmap.driverData;
2640          glDeleteTextures(1, &tex);
2641          bitmap.driverData = 0;
2642       }
2643       bitmap.driver = ((subclass(DisplayDriver))class(LFBDisplayDriver));
2644    }
2645
2646    bool AllocateBitmap(DisplaySystem displaySystem, Bitmap bitmap, int width, int height, int stride, PixelFormat format, bool allocatePalette)
2647    {
2648       OGLSystem oglSystem = displaySystem.driverData;
2649       bool result = false;
2650       Bitmap mipMap { };
2651       GLuint glBitmap = 0;
2652
2653       uint w = width, h = height;
2654       if(oglSystem.pow2textures)
2655       {
2656          w = pow2i(w);
2657          h = pow2i(h);
2658       }
2659       w = Min(w, oglSystem.maxTextureSize);
2660       h = Min(h, oglSystem.maxTextureSize);
2661
2662       glGenTextures(1, &glBitmap);
2663       glBindTexture(GL_TEXTURE_2D, glBitmap);
2664
2665       glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
2666
2667       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
2668       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
2669
2670       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
2671       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
2672
2673       glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
2674
2675       mipMap.Allocate(null, w, h, w, pixelFormatRGBA, false);
2676
2677       // glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2678       glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2679
2680       delete mipMap;
2681
2682       bitmap.driverData = (void *)(uintptr)glBitmap;
2683       bitmap.driver = displaySystem.driver;
2684       bitmap.width = w;
2685       bitmap.height = h;
2686
2687       result = true;
2688       return result;
2689    }
2690
2691    bool MakeDDBitmap(DisplaySystem displaySystem, Bitmap bitmap, bool mipMaps)
2692    {
2693       bool result = false;
2694       OGLSystem oglSystem = displaySystem.driverData;
2695       Bitmap convBitmap = bitmap;
2696       if(bitmap.keepData)
2697       {
2698          convBitmap = { };
2699          convBitmap.Copy(bitmap);
2700       }
2701
2702       // Pre process the bitmap... First make it 32 bit
2703       if(/*bitmap.pixelFormat == pixelFormatRGBA || */convBitmap.Convert(null, pixelFormat888, null))
2704       {
2705          int c, level;
2706          uint w = bitmap.width, h = bitmap.height;
2707          GLuint glBitmap = 0;
2708          if(oglSystem.pow2textures)
2709          {
2710             w = pow2i(w);
2711             h = pow2i(h);
2712          }
2713          w = Min(w, oglSystem.maxTextureSize);
2714          h = Min(h, oglSystem.maxTextureSize);
2715
2716          if(mipMaps)
2717          {
2718             while(w * 2 < h) w *= 2;
2719             while(h * 2 < w) h *= 2;
2720          }
2721
2722          // Switch ARGB to RGBA
2723          //if(bitmap.format != pixelFormatRGBA)
2724          {
2725             for(c=0; c<bitmap.size; c++)
2726             {
2727                // ((ColorRGBA *)bitmap.picture)[c] = ((ColorAlpha *)bitmap.picture)[c];
2728                // TODO:
2729                ColorAlpha color = ((ColorAlpha *)convBitmap.picture)[c];
2730                ((ColorRGBA *)convBitmap.picture)[c] = ColorRGBA { color.color.r, color.color.g, color.color.b, color.a };
2731             }
2732          }
2733          // convBitmap.pixelFormat = pixelFormat888;
2734
2735          glGetError();
2736          glGenTextures(1, &glBitmap);
2737          if(glBitmap == 0)
2738          {
2739             //int error = glGetError();
2740             return false;
2741          }
2742
2743          glBindTexture(GL_TEXTURE_2D, glBitmap);
2744          glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
2745
2746          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
2747          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, mipMaps ? GL_LINEAR_MIPMAP_LINEAR : GL_LINEAR);
2748          //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
2749
2750          //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
2751          //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
2752
2753          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
2754          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
2755
2756          glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
2757
2758          result = true;
2759
2760          for(level = 0; result && (w > 1 || h > 1); level++, w >>= 1, h >>= 1)
2761          {
2762             Bitmap mipMap;
2763             if(bitmap.width != w || bitmap.height != h)
2764             {
2765                mipMap = Bitmap { };
2766                if(mipMap.Allocate(null, w, h, w, convBitmap.pixelFormat, false))
2767                {
2768                   Surface mipSurface = mipMap.GetSurface(0,0,null);
2769                   mipSurface.Filter(convBitmap, 0,0,0,0, w, h, convBitmap.width, convBitmap.height);
2770                   delete mipSurface;
2771                }
2772                else
2773                {
2774                   result = false;
2775                   delete mipMap;
2776                }
2777             }
2778             else
2779                mipMap = convBitmap;
2780
2781             if(result)
2782             {
2783                int error;
2784                //int width = 0;
2785                glGetError();
2786                // glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA8, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2787                glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2788                //printf("Calling glTexImage2D\n");
2789                //glGetTexLevelParameteriv(GL_TEXTURE_2D, level, GL_TEXTURE_WIDTH, &width);
2790                //printf("width = %d (Should be %d, %d)\n", width, w, h);
2791                if((error = glGetError()))
2792                {
2793                   //Logf("OpenGL Bitmap MakeDD error: %d...\n", error);
2794                   //printf("OpenGL Bitmap MakeDD error: %d...\n", error);
2795                   result = false;
2796                }
2797             }
2798             if(mipMap != convBitmap)
2799                delete mipMap;
2800             if(!mipMaps) break;
2801          }
2802
2803          convBitmap.driver.FreeBitmap(convBitmap.displaySystem, convBitmap);
2804          bitmap.driverData = (void *)(uintptr)glBitmap;
2805          bitmap.driver = displaySystem.driver;
2806          if(bitmap.keepData)
2807             delete convBitmap;
2808
2809          if(!result)
2810             FreeBitmap(displaySystem, bitmap);
2811          else if(oglSystem.loadingFont)
2812          {
2813             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
2814             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
2815             oglSystem.loadingFont = false;
2816          }
2817       }
2818       return result;
2819    }
2820
2821    void ReleaseSurface(Display display, Surface surface)
2822    {
2823       glDisable(GL_SCISSOR_TEST);
2824       delete surface.driverData;
2825       surface.driverData = null;
2826    }
2827
2828    bool GetBitmapSurface(DisplaySystem displaySystem, Surface surface, Bitmap bitmap, int x, int y, Box clip)
2829    {
2830       return false;
2831    }
2832
2833    bool GetSurface(Display display, Surface surface, int x,int y, Box clip)
2834    {
2835       bool result = false;
2836       OGLSurface oglSurface = surface.driverData = OGLSurface { };
2837
2838       //Logf("GetSurface\n");
2839
2840       if(oglSurface)
2841       {
2842          if(displayWidth != display.width || displayHeight != display.height)
2843          {
2844             displayWidth = display.width;
2845             displayHeight = display.height;
2846
2847             glViewport(0,0,display.width,display.height);
2848             glLoadIdentity();
2849             glOrtho(0,display.width,display.height,0,0.0,1.0);
2850          }
2851
2852          surface.offset.x = x;
2853          surface.offset.y = y;
2854          surface.unclippedBox = surface.box = clip;
2855          oglSurface.bitmapMult[0] = 1;
2856          oglSurface.bitmapMult[1] = 1;
2857          oglSurface.bitmapMult[2] = 1;
2858          oglSurface.bitmapMult[3] = 1;
2859
2860          glEnable(GL_SCISSOR_TEST);
2861          glScissor(
2862             x+clip.left,
2863             (display.height) -(y+clip.bottom)-1,
2864             clip.right-clip.left+1,
2865             clip.bottom-clip.top+1);
2866          result = true;
2867       }
2868       return result;
2869    }
2870
2871    void Clip(Display display, Surface surface, Box clip)
2872    {
2873       Box box;
2874
2875       //Logf("Clip\n");
2876
2877       if(clip != null)
2878       {
2879          box = clip;
2880          box.Clip(surface.unclippedBox);
2881          surface.box = box;
2882       }
2883       else
2884          box = surface.box = surface.unclippedBox;
2885       box.left += surface.offset.x;
2886       box.top  += surface.offset.y;
2887       box.right+= surface.offset.x;
2888       box.bottom += surface.offset.y;
2889
2890       glScissor(
2891          box.left,display.height - box.bottom - 1,
2892          box.right-box.left+1, box.bottom-box.top+1);
2893    }
2894
2895    bool GrabScreen(Display display, Bitmap bitmap, int x, int y, unsigned int w, unsigned int h)
2896    {
2897       bool result = false;
2898       OGLDisplay oglDisplay = display.driverData;
2899       ColorAlpha * flippingBuffer = oglDisplay.flippingBuffer;
2900
2901       if(oglDisplay.flippingBuffer)
2902       {
2903          if(bitmap.pixelFormat != pixelFormat888 || bitmap.width < w || bitmap.height < h)
2904          {
2905             bitmap.Free();
2906             bitmap.Allocate(null, w,h,w, pixelFormat888, false);
2907          }
2908          if(bitmap)
2909          {
2910             uint row;
2911
2912             glPixelStorei(GL_PACK_ALIGNMENT, 4);
2913             glPixelStorei(GL_PACK_ROW_LENGTH, bitmap.stride);
2914             glPixelStorei(GL_PACK_SKIP_ROWS, 0);
2915             glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
2916             glReadPixels(x,display.height-h-y,w,h,GL_BGRA_EXT,GL_UNSIGNED_BYTE, flippingBuffer);
2917
2918             // Need a flip...
2919             for(row = 0; row<h; row++)
2920                CopyBytesBy4(((ColorAlpha *)bitmap.picture) + row * w, ((ColorAlpha *)flippingBuffer) + (h-row-1) * w, w);
2921             result = true;
2922          }
2923       }
2924       return result;
2925    }
2926
2927    void SetForeground(Display display, Surface surface, ColorAlpha color)
2928    {
2929       OGLSurface oglSurface = surface.driverData;
2930
2931       //Logf("SetForeground\n");
2932
2933       oglSurface.foreground[0] = color.color.r/255.0f;
2934       oglSurface.foreground[1] = color.color.g/255.0f;
2935       oglSurface.foreground[2] = color.color.b/255.0f;
2936       //oglSurface.foreground[3] = 1.0f;
2937       oglSurface.foreground[3] = color.a/255.0f;
2938
2939       //if(!oglSurface.foreground[3])printf("bug");
2940    }
2941
2942    void SetBackground(Display display, Surface surface, ColorAlpha color)
2943    {
2944       OGLSurface oglSurface = surface.driverData;
2945
2946       //Logf("SetBackground\n");
2947
2948       oglSurface.background[0] = color.color.r/255.0f;
2949       oglSurface.background[1] = color.color.g/255.0f;
2950       oglSurface.background[2] = color.color.b/255.0f;
2951       //oglSurface.background[3] = 1.0;
2952       oglSurface.background[3] = color.a/255.0f;
2953    }
2954
2955    void SetBlitTint(Display display, Surface surface, ColorAlpha color)
2956    {
2957       OGLSurface oglSurface = surface.driverData;
2958
2959       oglSurface.bitmapMult[0] = color.color.r/255.0f;
2960       oglSurface.bitmapMult[1] = color.color.g/255.0f;
2961       oglSurface.bitmapMult[2] = color.color.b/255.0f;
2962       oglSurface.bitmapMult[3] = color.a/255.0f;
2963    }
2964
2965    ColorAlpha GetPixel(Display display, Surface surface,int x,int y)
2966    {
2967       return 0;
2968    }
2969
2970    void PutPixel(Display display, Surface surface,int x,int y)
2971    {
2972       OGLSurface oglSurface = surface.driverData;
2973
2974       //Logf("PutPixel\n");
2975
2976       glColor4fv(oglSurface.foreground);
2977       glBegin(GL_POINTS);
2978       // glVertex2i(x+surface.offset.x, y+surface.offset.y);
2979       glVertex2f(x+surface.offset.x + 0.5f, y+surface.offset.y + 0.5f);
2980
2981       glEnd();
2982    }
2983
2984    void DrawLine(Display display, Surface surface, int _x1, int _y1, int _x2, int _y2)
2985    {
2986       OGLSurface oglSurface = surface.driverData;
2987       float x1 = _x1, x2 = _x2, y1 = _y1, y2 = _y2;
2988       if(_x1 == _x2)
2989       {
2990          if(_y2 >= _y1)
2991             y2 += 1;
2992          else
2993             y1 += 1;
2994       }
2995       else if(_y1 == _y2)
2996       {
2997          if(_x2 >= _x1)
2998             x2 += 1;
2999          else
3000             x1 += 1;
3001       }
3002       x1 += surface.offset.x;
3003       y1 += surface.offset.y;
3004       x2 += surface.offset.x;
3005       y2 += surface.offset.y;
3006
3007       //Logf("Line\n");
3008
3009       glColor4fv(oglSurface.foreground);
3010       glBegin(GL_LINES);
3011 #if defined(_GLES) || defined(EM_MODE)
3012       if(stippleEnabled)
3013       {
3014          glTexCoord2f(0.5f, 0);
3015          glVertex2f(x1 + 0.5f, y1 + 0.5f);
3016          glTexCoord2f(Max(x2-x1, y2-y1) + 0.5f, 0);
3017          glVertex2f(x2 + 0.5f, y2 + 0.5f);
3018       }
3019       else
3020 #endif
3021       {
3022          /*
3023          glVertex2i(x1, y1);
3024          glVertex2i(x2, y2);
3025          */
3026          glVertex2f(x1 + 0.5f, y1 + 0.5f);
3027          glVertex2f(x2 + 0.5f, y2 + 0.5f);
3028       }
3029
3030       glEnd();
3031    }
3032
3033    void Rectangle(Display display, Surface surface,int x1,int y1,int x2,int y2)
3034    {
3035       OGLSurface oglSurface = surface.driverData;
3036       x1 += surface.offset.x;
3037       y1 += surface.offset.y;
3038       x2 += surface.offset.x;
3039       y2 += surface.offset.y;
3040
3041       //Logf("Rectangle\n");
3042
3043       glColor4fv(oglSurface.foreground);
3044 #if defined(_GLES) || defined(EM_MODE)
3045       if(stippleEnabled)
3046       {
3047          glBegin(GL_LINES);
3048
3049          glTexCoord2f(0.5f, 0);
3050          glVertex2f(x1 + 0.5f, y1 + 0.5f);
3051          glTexCoord2f(y2-y1 + 0.5f, 0);
3052          glVertex2f(x1 + 0.5f, y2 + 0.5f);
3053
3054          glTexCoord2f(0.5f, 0);
3055          glVertex2f(x1 + 0.5f, y2 + 0.5f);
3056          glTexCoord2f(x2 - x1 + 0.5f, 0);
3057          glVertex2f(x2 + 0.5f, y2 + 0.5f);
3058
3059          glTexCoord2f(0.5f, 0);
3060          glVertex2f(x2 + 0.5f, y2 + 0.5f);
3061          glTexCoord2f(y1 - y2 + 0.5f, 0);
3062          glVertex2f(x2 + 0.5f, y1 + 0.5f);
3063
3064          glTexCoord2f(0.5f, 0);
3065          glVertex2f(x2 + 0.5f, y1 + 0.5f);
3066          glTexCoord2f(x1 - x2 + 0.5f, 0);
3067          glVertex2f(x1 + 0.5f, y1 + 0.5f);
3068       }
3069       else
3070 #endif
3071       {
3072          glBegin(GL_LINE_LOOP);
3073          /*
3074          glVertex2i(x1, y1);
3075          glVertex2i(x1, y2);
3076          glVertex2i(x2, y2);
3077          glVertex2i(x2, y1);
3078          */
3079          glVertex2f(x1 + 0.5f, y1 + 0.5f);
3080          glVertex2f(x1 + 0.5f, y2 + 0.5f);
3081          glVertex2f(x2 + 0.5f, y2 + 0.5f);
3082          glVertex2f(x2 + 0.5f, y1 + 0.5f);
3083       }
3084       glEnd();
3085    }
3086
3087    void Area(Display display, Surface surface,int x1,int y1,int x2,int y2)
3088    {
3089       OGLSurface oglSurface = surface.driverData;
3090       //Logf("Area\n");
3091
3092       glColor4fv(oglSurface.background);
3093
3094 #ifdef EM_MODE
3095       glBegin(GL_QUADS);
3096       glVertex2f(x1+surface.offset.x, y1+surface.offset.y);
3097       glVertex2f(x1+surface.offset.x, y2+surface.offset.y+1);
3098       glVertex2f(x2+surface.offset.x+1, y2+surface.offset.y+1);
3099       glVertex2f(x2+surface.offset.x+1, y1+surface.offset.y);
3100       glEnd();
3101 #else
3102       glRecti(x1+surface.offset.x, y1+surface.offset.y,
3103               x2+surface.offset.x + 1, y2+surface.offset.y + 1);
3104 #endif
3105       /*
3106       glRectf(x1+surface.offset.x, y1+surface.offset.y,
3107               x2+surface.offset.x + 1, y2+surface.offset.y + 1);
3108       */
3109    }
3110
3111    void Clear(Display display, Surface surface, ClearType type)
3112    {
3113       OGLDisplay oglDisplay = display.driverData;
3114       OGLSurface oglSurface = surface.driverData;
3115
3116       //Logf("Clear\n");
3117       if(type != depthBuffer)
3118          glClearColor(oglSurface.background[0], oglSurface.background[1], oglSurface.background[2], oglSurface.background[3]);
3119       if(type != colorBuffer && !oglDisplay.depthWrite)
3120       {
3121          glDepthMask((byte)bool::true);
3122       }
3123       glClear(((type != depthBuffer) ? GL_COLOR_BUFFER_BIT : 0) |
3124               ((type != colorBuffer) ? GL_DEPTH_BUFFER_BIT : 0));
3125       if(type != colorBuffer && !oglDisplay.depthWrite)
3126       {
3127          glDepthMask((byte)bool::false);
3128       }
3129    }
3130
3131    bool ConvertBitmap(DisplaySystem displaySystem, Bitmap bitmap, PixelFormat format, ColorAlpha * palette)
3132    {
3133       return true;
3134    }
3135
3136    void Blit(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h)
3137    {
3138       OGLSurface oglSurface = surface.driverData;
3139
3140 #if !defined(__OLDX__)
3141          // WHY DO WE HAVE GL_ONE HERE ?
3142          /*if(glBlendFuncSeparate && !oglSurface.writingText)
3143             glBlendFuncSeparate(GL_ONE, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
3144 #endif
3145
3146       if(!oglSurface.writingText)
3147       {
3148          // glTranslatef(-0.375f, -0.375f, 0.0f);
3149          glEnable(GL_TEXTURE_2D);
3150          glColor4fv(oglSurface.bitmapMult);
3151       }
3152       else if(oglSurface.xOffset)
3153          glTranslated(oglSurface.xOffset / 64.0/*-0.375*/, 0.0, 0.0);
3154
3155       glBindTexture(GL_TEXTURE_2D, (GLuint)(uintptr)bitmap.driverData);
3156       glBegin(GL_QUADS);
3157
3158       if(h < 0)
3159       {
3160          glTexCoord2f((float)sx/ bitmap.width, (float)(sy-h)/ bitmap.height);
3161          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
3162          glTexCoord2f((float)(sx+w) / bitmap.width, (float)(sy-h)/ bitmap.height);
3163          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
3164          glTexCoord2f((float)(sx+w)/ bitmap.width, (float)sy/ bitmap.height);
3165          glVertex2i(dx+w+surface.offset.x, dy-h+surface.offset.y);
3166          glTexCoord2f((float)sx / bitmap.width, (float)sy/ bitmap.height);
3167          glVertex2i(dx+surface.offset.x, dy-h+surface.offset.y);
3168       }
3169       else
3170       {
3171          /*
3172          glTexCoord2f((float)sx / bitmap.width, (float)sy/ bitmap.height);
3173          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
3174          glTexCoord2f((float)(sx+w)/ bitmap.width, (float)sy/ bitmap.height);
3175          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
3176          glTexCoord2f((float)(sx+w) / bitmap.width, (float)(sy+h)/ bitmap.height);
3177          glVertex2i(dx+w+surface.offset.x, dy+h+surface.offset.y);
3178          glTexCoord2f((float)sx/ bitmap.width, (float)(sy+h)/ bitmap.height);
3179          glVertex2i(dx+surface.offset.x, dy+h+surface.offset.y);
3180          */
3181
3182          glTexCoord2f((float)sx / bitmap.width, (float)sy/ bitmap.height);
3183          glVertex2f((float)dx+surface.offset.x, (float)dy+surface.offset.y);
3184          glTexCoord2f((float)(sx+w)/ bitmap.width, (float)sy/ bitmap.height);
3185          glVertex2f((float)dx+w+surface.offset.x, (float)dy+surface.offset.y);
3186          glTexCoord2f((float)(sx+w) / bitmap.width, (float)(sy+h)/ bitmap.height);
3187          glVertex2f((float)dx+w+surface.offset.x, (float)dy+h+surface.offset.y);
3188          glTexCoord2f((float)sx/ bitmap.width, (float)(sy+h)/ bitmap.height);
3189          glVertex2f((float)dx+surface.offset.x, (float)dy+h+surface.offset.y);
3190       }
3191       glEnd();
3192
3193       if(!oglSurface.writingText)
3194       {
3195          glDisable(GL_TEXTURE_2D);
3196
3197          //glTranslate(0.375, 0.375, 0.0);
3198       }
3199       else if(oglSurface.xOffset)
3200          glTranslated(-oglSurface.xOffset / 64.0/*+0.375*/, 0.0, 0.0);
3201
3202 #if !defined(__OLDX__)
3203          /*if(glBlendFuncSeparate && !oglSurface.writingText)
3204             glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
3205 #endif
3206    }
3207
3208    void Stretch(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
3209    {
3210       OGLSurface oglSurface = surface.driverData;
3211
3212       //glTranslate(-0.375, -0.375, 0.0);
3213
3214       //Logf("Stretch\n");
3215
3216 #if !defined(__OLDX__)
3217       /*if(glBlendFuncSeparate)
3218          glBlendFuncSeparate(GL_ONE, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
3219 #endif
3220
3221       glEnable(GL_TEXTURE_2D);
3222       glBindTexture(GL_TEXTURE_2D, (GLuint)(uintptr)bitmap.driverData);
3223
3224       glColor4fv(oglSurface.bitmapMult);
3225
3226       glBegin(GL_QUADS);
3227
3228       if(h < 0)
3229       {
3230          glTexCoord2f((float)(sx)/ bitmap.width, (float)(sy+sh)/ bitmap.height);
3231          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
3232
3233          glTexCoord2f((float)(sx+sw) / bitmap.width, (float)(sy+sh)/ bitmap.height);
3234          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
3235
3236          glTexCoord2f((float)(sx+sw)/ bitmap.width, (float)(sy)/ bitmap.height);
3237          glVertex2i(dx+w+surface.offset.x, dy-h+surface.offset.y);
3238
3239          glTexCoord2f((float)(sx) / bitmap.width, (float)(sy)/ bitmap.height);
3240          glVertex2i(dx+surface.offset.x, dy-h+surface.offset.y);
3241       }
3242       else
3243       {
3244          glTexCoord2f((float)(sx) / bitmap.width, (float)(sy)/ bitmap.height);
3245          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
3246
3247          glTexCoord2f((float)(sx+sw)/ bitmap.width, (float)(sy)/ bitmap.height);
3248          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
3249
3250          glTexCoord2f((float)(sx+sw) / bitmap.width, (float)(sy+sh)/ bitmap.height);
3251          glVertex2i(dx+w+surface.offset.x, dy+h+surface.offset.y);
3252
3253          glTexCoord2f((float)(sx)/ bitmap.width, (float)(sy+sh)/ bitmap.height);
3254          glVertex2i(dx+surface.offset.x, dy+h+surface.offset.y);
3255       }
3256
3257       glEnd();
3258
3259       glDisable(GL_TEXTURE_2D);
3260
3261       //glTranslate(0.375, 0.375, 0.0);
3262 #if !defined(__OLDX__)
3263       /*if(glBlendFuncSeparate)
3264          glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
3265 #endif
3266
3267    }
3268
3269    void Filter(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
3270    {
3271       Stretch(display, surface, bitmap, dx, dy, sx, sy, w, h, sw, sh);
3272    }
3273
3274    void StretchDI(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
3275    {
3276 #if !defined(EM_MODE)
3277       float s2dw,s2dh,d2sw,d2sh;
3278       //bool flipX = false, flipY = false;
3279
3280       //Logf("StretchDI\n");
3281
3282       if(Sgn(w) != Sgn(sw))
3283       {
3284          w = Abs(w);
3285          sw = Abs(sw);
3286          //flipX = true;
3287       }
3288       if(Sgn(h) != Sgn(sh))
3289       {
3290          h = Abs(h);
3291          sh = Abs(sh);
3292          //flipY = true;
3293       }
3294
3295       s2dw=(float)w / sw;
3296       s2dh=(float)h / sh;
3297       d2sw=(float)sw / w;
3298       d2sh=(float)sh / h;
3299
3300       //Clip against the edges of the source
3301       if(sx<0)
3302       {
3303          dx+=(int)((0-sx) * s2dw);
3304          w-=(int)((0-sx) * s2dw);
3305          sw-=0-sx;
3306          sx=0;
3307       }
3308       if(sy<0)
3309       {
3310          dy+=(int)((0-sy) * s2dh);
3311          h-=(int)((0-sy) * s2dh);
3312
3313          sh-=0-sy;
3314          sy=0;
3315       }
3316       if(sx+sw>bitmap.width-1)
3317       {
3318          w-=(int)((sx+sw-(bitmap.width-1)-1)*s2dw);
3319          sw-=sx+sw-(bitmap.width-1)-1;
3320       }
3321       if(sy+sh>(bitmap.height-1))
3322       {
3323          h-=(int)((sy+sh-(bitmap.height-1)-1)*s2dh);
3324          sh-=sy+sh-(bitmap.height-1)-1;
3325       }
3326       //Clip against the edges of the surfaceination
3327       if(dx<surface.box.left)
3328       {
3329          //if(!flip)
3330          sx+=(int)((surface.box.left-dx)*d2sw);
3331          sw-=(int)((surface.box.left-dx)*d2sw);
3332          w-=surface.box.left-dx;
3333          dx=surface.box.left;
3334       }
3335       if(dy<surface.box.top)
3336       {
3337          sy+=(int)((surface.box.top-dy)*d2sh);
3338          sh-=(int)((surface.box.top-dy)*d2sh);
3339          h-=surface.box.top-dy;
3340          dy=surface.box.top;
3341       }
3342       if(dx+w>surface.box.right)
3343       {
3344          //if(flip) sx+=(int)((dx+w-surface.box.right-1)*d2sw);
3345          sw-=(int)((dx+w-surface.box.right-1)*d2sw);
3346          w-=dx+w-surface.box.right-1;
3347       }
3348       if(dy+h>surface.box.bottom)
3349       {
3350          sh-=(int)((dy+h-surface.box.bottom-1)*d2sh);
3351          h-=dy+h-surface.box.bottom-1;
3352       }
3353       if((w<=0)||(h<=0)||(sw<=0)||(sh<=0)) return;
3354
3355       dx += surface.offset.x;
3356       dy += surface.offset.y;
3357
3358       if(bitmap.pixelFormat == pixelFormat888 && !bitmap.paletteShades)
3359       {
3360          glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
3361          glPixelStorei(GL_UNPACK_ROW_LENGTH, bitmap.stride);
3362          glPixelStorei(GL_UNPACK_SKIP_PIXELS, sx);
3363          glPixelStorei(GL_UNPACK_SKIP_ROWS, sy);
3364          glRasterPos2d(dx,dy);
3365          //glPixelZoom(flipX ? -s2dw : s2dw, flipY ? s2dh : -s2dh);
3366          glPixelZoom(s2dw, -s2dh);
3367          glDrawPixels(sw,sh,GL_BGRA_EXT,GL_UNSIGNED_BYTE, bitmap.picture);
3368          glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
3369          glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
3370          glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
3371          glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
3372       }
3373 #endif
3374    }
3375
3376    void BlitDI(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h)
3377    {
3378 #if !defined(EM_MODE)
3379       //Logf("BlitDI\n");
3380
3381       //Clip against the edges of the source
3382       if(sx<0)
3383       {
3384          dx+=-sx;
3385          w-=-sx;
3386          sx=0;
3387       }
3388       if(sy<0)
3389       {
3390          dy+=0-sy;
3391          h-=0-sy;
3392          sy=0;
3393       }
3394       if(sx+w>bitmap.width-1)
3395          w-=sx+w-(bitmap.width-1)-1;
3396       if(sy+h>bitmap.height-1)
3397          h-=sy+h-(bitmap.height-1)-1;
3398       //Clip against the edges of the surfaceination
3399       if(dx<surface.box.left)
3400       {
3401          //if(!flip)
3402          sx+=surface.box.left-dx;
3403          w-=surface.box.left-dx;
3404          dx=surface.box.left;
3405       }
3406       if(dy<surface.box.top)
3407       {
3408          sy+=surface.box.top-dy;
3409          h-=surface.box.top-dy;
3410          dy=surface.box.top;
3411       }
3412       if(dx+w>surface.box.right)
3413       {
3414          //if(flip) sx+=dx+w-surface.box.right-1;
3415          w-=dx+w-surface.box.right-1;
3416       }
3417       if(dy+h>surface.box.bottom)
3418          h-=dy+h-surface.box.bottom-1;
3419       if((w<=0)||(h<=0))
3420          return;
3421
3422       dx += surface.offset.x;
3423       dy += surface.offset.y;
3424
3425       if(bitmap.pixelFormat == pixelFormat888 && !bitmap.paletteShades)
3426       {
3427          glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
3428          glPixelStorei(GL_UNPACK_ROW_LENGTH, bitmap.stride);
3429          glPixelStorei(GL_UNPACK_SKIP_PIXELS, sx);
3430          glPixelStorei(GL_UNPACK_SKIP_ROWS, sy);
3431          glRasterPos2d(dx,dy);
3432          glPixelZoom(1,-1);
3433          glDrawPixels(w,h,GL_BGRA_EXT,GL_UNSIGNED_BYTE, bitmap.picture);
3434          glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
3435          glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
3436          glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
3437          glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
3438       }
3439 #endif
3440    }
3441
3442    void FilterDI(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
3443    {
3444       StretchDI(display, surface, bitmap, dx, dy, sx, sy, w, h, sw, sh);
3445    }
3446
3447    void UnloadFont(DisplaySystem displaySystem, Font font)
3448    {
3449       ((subclass(DisplayDriver))class(LFBDisplayDriver)).UnloadFont(displaySystem, font);
3450    }
3451
3452    Font LoadFont(DisplaySystem displaySystem, const char * faceName, float size, FontFlags flags)
3453    {
3454       Font font;
3455       OGLSystem oglSystem = displaySystem.driverData;
3456       oglSystem.loadingFont = true;
3457       font = ((subclass(DisplayDriver))class(LFBDisplayDriver)).LoadFont(displaySystem, faceName, size, flags);
3458       return font;
3459    }
3460
3461    void FontExtent(DisplaySystem displaySystem, Font font, const char * text, int len, int * width, int * height)
3462    {
3463       ((subclass(DisplayDriver))class(LFBDisplayDriver)).FontExtent(displaySystem, font, text, len, width, height);
3464    }
3465
3466    void WriteText(Display display, Surface surface, int x, int y, const char * text, int len)
3467    {
3468       OGLSurface oglSurface = surface.driverData;
3469       OGLSystem oglSystem = display.displaySystem.driverData;
3470       oglSystem.loadingFont = true;
3471
3472       //glTranslated(-0.375, -0.375, 0.0);
3473
3474       //Logf("Blit\n");
3475
3476       if(surface.textOpacity)
3477       {
3478          int w, h;
3479          FontExtent(display.displaySystem, surface.font, text, len, &w, &h);
3480          display.displaySystem.driver.Area(display, surface,x,y,x+w-1,y+h-1);
3481       }
3482
3483       oglSurface.writingText = true;
3484
3485       glEnable(GL_TEXTURE_2D);
3486
3487       if(surface.outline.size)
3488       {
3489          ColorAlpha outlineColor = surface.outline.color;
3490          glColor4ub(outlineColor.color.r, outlineColor.color.g, outlineColor.color.b, outlineColor.a);
3491          //glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
3492          //glEnable(GL_BLEND);
3493
3494          oglSurface.writingOutline = true;
3495          ((subclass(DisplayDriver))class(LFBDisplayDriver)).WriteText(display, surface, x, y, text, len);
3496          oglSurface.writingOutline = false;
3497       }
3498       glColor4fv(oglSurface.foreground);
3499
3500       ((subclass(DisplayDriver))class(LFBDisplayDriver)).WriteText(display, surface, x, y, text, len);
3501       oglSurface.writingText = false;
3502       oglSystem.loadingFont = false;
3503
3504       glDisable(GL_TEXTURE_2D);
3505
3506       //glTranslated(0.375, 0.375, 0.0);
3507    }
3508
3509    void TextFont(Display display, Surface surface, Font font)
3510    {
3511       ((subclass(DisplayDriver))class(LFBDisplayDriver)).TextFont(display, surface, font);
3512    }
3513
3514    void TextOpacity(Display display, Surface surface, bool opaque)
3515    {
3516       OGLSurface oglSurface = surface.driverData;
3517       oglSurface.opaqueText = opaque;
3518    }
3519
3520    void TextExtent(Display display, Surface surface, const char * text, int len, int * width, int * height)
3521    {
3522       OGLSurface oglSurface = surface.driverData;
3523       OGLSystem oglSystem = display.displaySystem.driverData;
3524       oglSystem.loadingFont = true;
3525       FontExtent(display.displaySystem, oglSurface.font, text, len, width, height);
3526       oglSystem.loadingFont = false;
3527    }
3528
3529    void DrawingChar(Display display, Surface surface, char character)
3530    {
3531
3532    }
3533
3534    void LineStipple(Display display, Surface surface, uint32 stipple)
3535    {
3536       //Logf("Stipple\n");
3537
3538       if(stipple)
3539       {
3540 #if defined(_GLES) || defined(EM_MODE)
3541          stippleEnabled = true;
3542          glesLineStipple(1, (uint16)stipple);
3543 #else
3544          glLineStipple(1, (uint16)stipple);
3545          glEnable(GL_LINE_STIPPLE);
3546 #endif
3547       }
3548       else
3549       {
3550 #if defined(_GLES) || defined(EM_MODE)
3551          stippleEnabled = false;
3552          glMatrixMode(GL_TEXTURE);
3553          glLoadIdentity();
3554          glMatrixMode(GL_PROJECTION);
3555          glDisable(GL_TEXTURE_2D);
3556 #else
3557          glDisable(GL_LINE_STIPPLE);
3558 #endif
3559       }
3560    }
3561 #if !defined(ECERE_NO3D) && !defined(ECERE_VANILLA)
3562    void SetRenderState(Display display, RenderState state, uint value)
3563    {
3564       OGLDisplay oglDisplay = display.driverData;
3565       //Logf("RenderState\n");
3566
3567       switch(state)
3568       {
3569          case antiAlias:
3570             if(value)
3571                glEnable(GL_MULTISAMPLE_ARB);
3572             else
3573                glDisable(GL_MULTISAMPLE_ARB);
3574             break;
3575          case fillMode:
3576 #if !defined(_GLES)
3577             glPolygonMode(GL_FRONT_AND_BACK, ((FillModeValue)value == solid) ? GL_FILL : GL_LINE);
3578 #endif
3579             break;
3580          case depthTest:
3581             if(value) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
3582             break;
3583          case depthWrite:
3584             if(value) glDepthMask((byte)bool::true); else glDepthMask((byte)bool::false);
3585             oglDisplay.depthWrite = (bool)value;
3586             break;
3587          case fogColor:
3588          {
3589             float color[4] = { ((Color)value).r/255.0f, ((Color)value).g/255.0f, ((Color)value).b/255.0f, 1.0f };
3590             glFogfv(GL_FOG_COLOR, (float *)&color);
3591             break;
3592          }
3593          case fogDensity:
3594             glFogf(GL_FOG_DENSITY, (float)(RenderStateFloat { ui = value }.f * nearPlane));
3595             break;
3596          case blend:
3597             if(value) glEnable(GL_BLEND); else glDisable(GL_BLEND);
3598             break;
3599          case ambient:
3600          {
3601 #if !defined(EM_MODE)
3602             float ambient[4] = { ((Color)value).r/255.0f, ((Color)value).g/255.0f, ((Color)value).b/255.0f, 1.0f };
3603             glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambient);
3604 #endif
3605             break;
3606          }
3607          case alphaWrite:
3608          {
3609             if(value) glColorMask(1,1,1,1); else glColorMask(1,1,1,0);
3610             break;
3611          }
3612          case vSync:
3613          {
3614 #if defined(__WIN32__)
3615             wglSwapIntervalEXT(value ? 1 : 0);
3616 #endif
3617             break;
3618          }
3619       }
3620    }
3621
3622    void SetLight(Display display, int id, Light light)
3623    {
3624 #if !defined(EM_MODE)
3625       //Logf("SetLight\n");
3626
3627       if(light != null)
3628       {
3629          Object lightObject = light.lightObject;
3630          float position[4] = { 0, 0, 0, 0 };
3631          float color[4] = { 0, 0, 0, 1 };
3632
3633          glEnable(GL_LIGHT0 + id);
3634          /*
3635          glLightfv(GL_LIGHT0 + id, GL_DIFFUSE, (float *)&light.diffuse);
3636          glLightfv(GL_LIGHT0 + id, GL_AMBIENT, (float *)&light.ambient);
3637          glLightfv(GL_LIGHT0 + id, GL_SPECULAR,(float *)&light.specular);
3638          */
3639
3640          if(!light.multiplier) light.multiplier = 1.0f;
3641
3642          color[0] = light.diffuse.r * light.multiplier;
3643          color[1] = light.diffuse.g * light.multiplier;
3644          color[2] = light.diffuse.b * light.multiplier;
3645          glLightfv(GL_LIGHT0 + id, GL_DIFFUSE, color);
3646
3647          color[0] = light.ambient.r * light.multiplier;
3648          color[1] = light.ambient.g * light.multiplier;
3649          color[2] = light.ambient.b * light.multiplier;
3650          glLightfv(GL_LIGHT0 + id, GL_AMBIENT, color);
3651          color[0] = light.specular.r * light.multiplier;
3652          color[1] = light.specular.g * light.multiplier;
3653          color[2] = light.specular.b * light.multiplier;
3654          glLightfv(GL_LIGHT0 + id, GL_SPECULAR,color);
3655
3656          if(lightObject)
3657          {
3658             Vector3D positionVector;
3659             if(light.flags.spot)
3660             {
3661                if(lightObject.flags.root || !lightObject.parent)
3662                {
3663                   positionVector = lightObject.transform.position;
3664                   positionVector.Subtract(positionVector, display.display3D.camera.cPosition);
3665                }
3666                else
3667                {
3668                   positionVector.MultMatrix(lightObject.transform.position, lightObject.parent.matrix);
3669                   if(display.display3D.camera)
3670                      positionVector.Subtract(positionVector, display.display3D.camera.cPosition);
3671                }
3672                position[3] = 1;
3673             }
3674             else
3675             {
3676                if(!light.direction.x && !light.direction.y && !light.direction.z)
3677                {
3678                   Vector3Df vector { 0,0,-1 };
3679                   Matrix mat;
3680                   mat.RotationQuaternion(light.orientation);
3681                   positionVector.MultMatrixf(vector, mat);
3682                }
3683                else
3684                {
3685                   positionVector = light.direction;
3686                   position[3] = 1;
3687                }
3688             }
3689
3690             position[0] = (float)positionVector.x;
3691             position[1] = (float)positionVector.y;
3692             position[2] = (float)positionVector.z;
3693
3694             glLightfv(GL_LIGHT0 + id, GL_POSITION, position);
3695
3696             /*
3697             // Display Light Position
3698             glDisable(GL_LIGHTING);
3699             glDisable(GL_DEPTH_TEST);
3700             glColor3f(1,1,1);
3701             glPointSize(10);
3702             glBegin(GL_POINTS);
3703             glVertex3fv(position);
3704             glEnd();
3705             glEnable(GL_DEPTH_TEST);
3706             glEnable(GL_LIGHTING);
3707
3708
3709             // Display Target
3710             if(lightObject.flags.root || !lightObject.parent)
3711             {
3712                positionVector = light.target.transform.position;
3713                positionVector.Subtract(positionVector, display.camera.cPosition);
3714             }
3715             else
3716             {
3717                positionVector.MultMatrix(light.target.transform.position,
3718                   lightObject.light.target.parent.matrix);
3719                positionVector.Subtract(positionVector, display.camera.cPosition);
3720             }
3721
3722             position[0] = positionVector.x;
3723             position[1] = positionVector.y;
3724             position[2] = positionVector.z;
3725
3726             glDisable(GL_LIGHTING);
3727             glDisable(GL_DEPTH_TEST);
3728             glColor3f(1,1,0);
3729             glPointSize(10);
3730             glBegin(GL_POINTS);
3731             glVertex3fv(position);
3732             glEnd();
3733             glEnable(GL_DEPTH_TEST);
3734             glEnable(GL_LIGHTING);
3735             */
3736
3737             if(light.flags.attenuation)
3738             {
3739                glLightf(GL_LIGHT0 + id, GL_CONSTANT_ATTENUATION, light.Kc);
3740                glLightf(GL_LIGHT0 + id, GL_LINEAR_ATTENUATION, light.Kl);
3741                glLightf(GL_LIGHT0 + id, GL_QUADRATIC_ATTENUATION, light.Kq);
3742             }
3743
3744             if(light.flags.spot)
3745             {
3746                float exponent = 0;
3747                #define MAXLIGHT  0.9
3748                float direction[4] = { (float)light.direction.x, (float)light.direction.y, (float)light.direction.z, 1 };
3749                // Figure out exponent out of the hot spot
3750                exponent = (float)(log(MAXLIGHT) / log(cos((light.hotSpot / 2))));
3751
3752                glLightfv(GL_LIGHT0 + id, GL_SPOT_DIRECTION, direction);
3753                glLightf(GL_LIGHT0 + id, GL_SPOT_CUTOFF, (float)(light.fallOff / 2));
3754                glLightf(GL_LIGHT0 + id, GL_SPOT_EXPONENT, exponent);
3755             }
3756          }
3757          else
3758          {
3759
3760             Vector3Df vector { 0,0,-1 };
3761             Vector3Df direction;
3762             Matrix mat;
3763
3764             mat.RotationQuaternion(light.orientation);
3765             direction.MultMatrix(vector, mat);
3766
3767             position[0] = direction.x;
3768             position[1] = direction.y;
3769             position[2] = direction.z;
3770
3771             glLightfv(GL_LIGHT0 + id, GL_POSITION, position);
3772          }
3773       }
3774       else
3775          glDisable(GL_LIGHT0 + id);
3776 #endif
3777    }
3778
3779    void SetCamera(Display display, Surface surface, Camera camera)
3780    {
3781       OGLDisplay oglDisplay = display.driverData;
3782       //Logf("SetCamera\n");
3783
3784       if(camera)
3785       {
3786          int left = surface.box.left + surface.offset.x;
3787          int top = surface.box.top  + surface.offset.y;
3788          int right = surface.box.right + surface.offset.x;
3789          int bottom = surface.box.bottom + surface.offset.y;
3790          float origX = surface.offset.x + camera.origin.x;
3791          float origY = surface.offset.y + camera.origin.y;
3792          int x = left;
3793          int y = display.height - bottom - 1;
3794          int w = right - left + 1;
3795          int h = bottom - top + 1;
3796
3797          // *** ViewPort ***
3798          glViewport(x, y, w, h);
3799
3800          // *** Projection Matrix ***
3801          if(!display.display3D.camera)
3802          {
3803             glMatrixMode(GL_PROJECTION);
3804             glPushMatrix();
3805          }
3806          else
3807             glMatrixMode(GL_PROJECTION);
3808          if(display.display3D.collectingHits)
3809          {
3810             float pickX = display.display3D.pickX + surface.offset.x;
3811             float pickY = display.height - (display.display3D.pickY + surface.offset.y) - 1;
3812             Matrix pickMatrix
3813             {
3814                {
3815                   w / display.display3D.pickWidth, 0, 0, 0,
3816                   0, h / display.display3D.pickHeight, 0, 0,
3817                   0, 0, 1, 0,
3818                   (w + 2.0f * (x - pickX)) / display.display3D.pickWidth,
3819                   (h + 2.0f * (y - pickY)) / display.display3D.pickHeight, 0, 1
3820                }
3821             };
3822             glLoadMatrixd(pickMatrix.array);
3823          }
3824          else
3825             glLoadIdentity();
3826          glFrustum(
3827             (left   - origX) * camera.zMin / camera.focalX,
3828             (right  - origX) * camera.zMin / camera.focalX,
3829             (bottom - origY) * camera.zMin / camera.focalY,
3830             (top    - origY) * camera.zMin / camera.focalY,
3831             camera.zMin, camera.zMax);
3832
3833          glDisable(GL_BLEND);
3834
3835          // *** Z Inverted Identity Matrix ***
3836          glMatrixMode(GL_MODELVIEW);
3837          if(!display.display3D.camera)
3838             glPushMatrix();
3839
3840          glLoadIdentity();
3841
3842          glScaled(1.0/nearPlane, 1.0/nearPlane, -1.0/nearPlane);
3843
3844          // *** View Matrix ***
3845          glMultMatrixd(camera.viewMatrix.array);
3846
3847          // *** Lights ***
3848          // ...
3849
3850          glEnable(GL_DEPTH_TEST);
3851 //#if !defined(EM_MODE)
3852          glEnable(GL_LIGHTING);
3853          glShadeModel(GL_SMOOTH);
3854 //#endif
3855          glDepthMask((byte)bool::true);
3856          oglDisplay.depthWrite = true;
3857
3858          glEnable(GL_MULTISAMPLE_ARB);
3859       }
3860       else if(display.display3D.camera)
3861       {
3862          oglDisplay.depthWrite = false;
3863          glViewport(0,0,display.width,display.height);
3864
3865          glDisable(GL_CULL_FACE);
3866          glDisable(GL_DEPTH_TEST);
3867          glDisable(GL_LIGHTING);
3868          glDisable(GL_FOG);
3869          glDisable(GL_TEXTURE_2D);
3870 //#if !defined(EM_MODE)
3871          glShadeModel(GL_FLAT);
3872 //#endif
3873          glEnable(GL_BLEND);
3874          glDisable(GL_MULTISAMPLE_ARB);
3875
3876          // *** Restore 2D MODELVIEW Matrix ***
3877          glPopMatrix();
3878
3879          // *** Restore 2D PROJECTION Matrix ***
3880          glMatrixMode(GL_PROJECTION);
3881          glPopMatrix();
3882       }
3883
3884    }
3885
3886    void ApplyMaterial(Display display, Material material, Mesh mesh)
3887    {
3888       //Logf("ApplyMaterial\n");
3889
3890       // Basic Properties
3891       if(material.flags.doubleSided)
3892       {
3893 #if !defined(EM_MODE)
3894          glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, !material.flags.singleSideLight);
3895 #endif
3896          glDisable(GL_CULL_FACE);
3897       }
3898       else
3899       {
3900 #if !defined(EM_MODE)
3901          glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, bool::false);
3902 #endif
3903          glEnable(GL_CULL_FACE);
3904       }
3905
3906       // Fog
3907       if(material.flags.noFog)
3908          glDisable(GL_FOG);
3909       else
3910          glEnable(GL_FOG);
3911
3912       // Maps
3913       if(material.baseMap && (mesh.texCoords || mesh.flags.texCoords1))
3914       {
3915          Bitmap map = material.baseMap;
3916          glEnable(GL_TEXTURE_2D);
3917          glBindTexture(GL_TEXTURE_2D, (GLuint)(uintptr)map.driverData);
3918
3919          glMatrixMode(GL_TEXTURE);
3920          glLoadIdentity();
3921          if(material.uScale && material.vScale)
3922             glScalef(material.uScale, material.vScale, 1);
3923          glMatrixMode(GL_MODELVIEW);
3924
3925          if(material.flags.tile)
3926          {
3927             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
3928             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
3929          }
3930          else
3931          {
3932             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
3933             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
3934          }
3935       }
3936       else
3937          glDisable(GL_TEXTURE_2D);
3938
3939 #ifdef EM_MODE
3940       glColor4f(material.diffuse.r, material.diffuse.g, material.diffuse.b, material.opacity);
3941 #else
3942       if(mesh.flags.colors)
3943       {
3944          glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
3945          glEnable(GL_COLOR_MATERIAL);
3946       }
3947       else
3948       {
3949          glDisable(GL_COLOR_MATERIAL);
3950          {
3951             float color[4] = { material.diffuse.r, material.diffuse.g, material.diffuse.b, material.opacity };
3952             glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, color);
3953          }
3954          {
3955             float color[4] = { material.ambient.r, material.ambient.g, material.ambient.b, 0 };
3956             glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, color);
3957          }
3958       }
3959       {
3960          float color[4] = { material.specular.r, material.specular.g, material.specular.b, 0 };
3961          glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, color);
3962       }
3963       {
3964          float color[4] = { material.emissive.r, material.emissive.g, material.emissive.b, 0 };
3965          glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, color);
3966       }
3967
3968       glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, &material.power);
3969 #endif
3970    }
3971
3972    void FreeMesh(DisplaySystem displaySystem, Mesh mesh)
3973    {
3974       OGLMesh oglMesh = mesh.data;
3975       if(oglMesh)
3976       {
3977          if(!mesh.flags.vertices)
3978          {
3979             oglMesh.vertices.free();
3980             delete mesh.vertices;
3981          }
3982          if(!mesh.flags.normals)
3983          {
3984             oglMesh.normals.free();
3985             delete mesh.normals;
3986          }
3987          if(!mesh.flags.texCoords1)
3988          {
3989             oglMesh.texCoords.free();
3990             delete mesh.texCoords;
3991          }
3992          if(!mesh.flags.texCoords2)
3993          {
3994             oglMesh.texCoords2.free();
3995             // delete mesh.texCoords2;
3996          }
3997          if(!mesh.flags.colors)
3998          {
3999             oglMesh.colors.free();
4000             delete mesh.colors;
4001          }
4002          if(!mesh.flags)
4003          {
4004             delete oglMesh;
4005             mesh.data = null;
4006          }
4007       }
4008    }
4009
4010    bool AllocateMesh(DisplaySystem displaySystem, Mesh mesh, MeshFeatures flags, int nVertices)
4011    {
4012       bool result = false;
4013
4014       if(!mesh.data)
4015          mesh.data = OGLMesh { };
4016       if(mesh.data)
4017       {
4018          if(mesh.nVertices == nVertices)
4019          {
4020             // Same number of vertices, adding features (Leaves the other features pointers alone)
4021             if(mesh.flags != flags)
4022             {
4023                if(!mesh.flags.vertices && flags.vertices)
4024                {
4025                   if(flags.doubleVertices)
4026                   {
4027                      mesh.vertices = (Vector3Df *)new Vector3D[nVertices];
4028                   }
4029                   else
4030                      mesh.vertices = new Vector3Df[nVertices];
4031                }
4032                if(!mesh.flags.normals && flags.normals)
4033                {
4034                   if(flags.doubleNormals)
4035                   {
4036                      mesh.normals = (Vector3Df *)new Vector3D[nVertices];
4037                   }
4038                   else
4039                      mesh.normals = new Vector3Df[nVertices];
4040                }
4041                if(!mesh.flags.texCoords1 && flags.texCoords1)
4042                {
4043                   mesh.texCoords = new Pointf[nVertices];
4044                }
4045                if(!mesh.flags.colors && flags.colors)
4046                {
4047                   mesh.colors = new ColorRGBAf[nVertices];
4048                }
4049             }
4050          }
4051          else
4052          {
4053             // New number of vertices, reallocate all current and new features
4054             flags |= mesh.flags;
4055             if(flags.vertices)
4056             {
4057                if(flags.doubleVertices)
4058                {
4059                   mesh.vertices = (Vector3Df *)renew mesh.vertices Vector3D[nVertices];
4060                }
4061                else
4062                   mesh.vertices = renew mesh.vertices Vector3Df[nVertices];
4063             }
4064             if(flags.normals)
4065             {
4066                if(flags.doubleNormals)
4067                {
4068                   mesh.normals = (Vector3Df *)renew mesh.normals Vector3D[nVertices];
4069                }
4070                else
4071                   mesh.normals = renew mesh.normals Vector3Df[nVertices];
4072             }
4073             if(flags.texCoords1)
4074             {
4075                mesh.texCoords = renew mesh.texCoords Pointf[nVertices];
4076             }
4077             if(flags.colors)
4078             {
4079                mesh.colors = renew mesh.colors ColorRGBAf[nVertices];
4080             }
4081          }
4082          result = true;
4083       }
4084       return result;
4085    }
4086
4087    void UnlockMesh(DisplaySystem displaySystem, Mesh mesh, MeshFeatures flags)
4088    {
4089       OGLMesh oglMesh = mesh.data;
4090       if(!flags) flags = mesh.flags;
4091
4092       if(vboAvailable)
4093       {
4094          if(flags.vertices)
4095             oglMesh.vertices.upload(
4096                mesh.nVertices * (mesh.flags.doubleVertices ? sizeof(Vector3D) : sizeof(Vector3Df)), mesh.vertices); //, GL_STATIC_DRAW_ARB );
4097
4098          if(flags.normals)
4099             oglMesh.normals.upload(
4100                mesh.nVertices * (mesh.flags.doubleNormals ? sizeof(Vector3D) : sizeof(Vector3Df)), mesh.normals); //, GL_STATIC_DRAW_ARB );
4101
4102          if(flags.texCoords1)
4103             oglMesh.texCoords.upload(
4104                mesh.nVertices * sizeof(Pointf), mesh.texCoords); //, GL_STATIC_DRAW_ARB );
4105
4106          if(flags.colors)
4107             oglMesh.colors.upload(
4108                mesh.nVertices * sizeof(ColorRGBAf), mesh.colors); //, GL_STATIC_DRAW_ARB );
4109       }
4110    }
4111
4112    bool LockMesh(DisplaySystem displaySystem, Mesh mesh, MeshFeatures flags)
4113    {
4114       bool result = true;
4115
4116         return result;
4117    }
4118
4119    void FreeIndices(DisplaySystem displaySystem, OGLIndices oglIndices)
4120    {
4121       if(oglIndices)
4122       {
4123          oglIndices.buffer.free();
4124          delete oglIndices.indices;
4125          delete oglIndices;
4126       }
4127    }
4128
4129    void * AllocateIndices(DisplaySystem displaySystem, int nIndices, bool indices32bit)
4130    {
4131       OGLIndices oglIndices = OGLIndices { };
4132       if(oglIndices)
4133       {
4134          oglIndices.indices = (void *)(indices32bit ? new uint32[nIndices] : new uint16[nIndices]);
4135          oglIndices.nIndices = nIndices;
4136       }
4137       return oglIndices;
4138    }
4139
4140    void UnlockIndices(DisplaySystem displaySystem, OGLIndices oglIndices, bool indices32bit, int nIndices)
4141    {
4142       if(vboAvailable)
4143       {
4144          oglIndices.buffer.upload(
4145             nIndices * (indices32bit ? sizeof(uint32) : sizeof(uint16)),
4146             oglIndices.indices); //GL_STATIC_DRAW_ARB);
4147       }
4148    }
4149
4150    uint16 * LockIndices(DisplaySystem displaySystem, OGLIndices oglIndices)
4151    {
4152
4153       return oglIndices.indices;
4154    }
4155
4156    void SelectMesh(Display display, Mesh mesh)
4157    {
4158       //Logf("SelectMesh\n");
4159
4160 #if !defined( __ANDROID__) && !defined(__APPLE__) && !defined(__EMSCRIPTEN__) && !defined(__ODROID__)
4161
4162 #if defined(__WIN32__)
4163       if(glUnlockArraysEXT)
4164 #endif
4165          if(!vboAvailable && display.display3D.mesh)
4166             glUnlockArraysEXT();
4167
4168 #endif
4169       if(mesh)
4170       {
4171          OGLMesh oglMesh = mesh.data;
4172
4173          // *** Vertex Stream ***
4174          glEnableClientState(GL_VERTEX_ARRAY);
4175          if(!display.display3D.collectingHits && oglMesh)
4176          {
4177             oglMesh.vertices.use(vertex, 3, (mesh.flags.doubleVertices ? GL_DOUBLE : GL_FLOAT), 0, oglMesh.vertices.buffer ? null : (double *)mesh.vertices);
4178
4179             // *** Normals Stream ***
4180             if(mesh.normals || mesh.flags.normals)
4181             {
4182                glEnableClientState(GL_NORMAL_ARRAY);
4183                oglMesh.normals.use(normal, 3, GL_FLOAT, 0, oglMesh.normals.buffer ? null : mesh.normals);
4184             }
4185             else
4186                glDisableClientState(GL_NORMAL_ARRAY);
4187
4188             // *** Texture Coordinates Stream ***
4189             if(mesh.texCoords || mesh.flags.texCoords1)
4190             {
4191                glEnableClientState(GL_TEXTURE_COORD_ARRAY);
4192                oglMesh.texCoords.use(texCoord, 2, GL_FLOAT, 0, oglMesh.texCoords.buffer ? null : mesh.texCoords);
4193             }
4194             else
4195                glDisableClientState(GL_TEXTURE_COORD_ARRAY);
4196
4197             // *** Color Stream ***
4198             if(mesh.colors || mesh.flags.colors)
4199             {
4200                glEnableClientState(GL_COLOR_ARRAY);
4201                oglMesh.colors.use(color, 4, GL_FLOAT, 0, oglMesh.colors.buffer ? null : mesh.colors);
4202             }
4203             else
4204                glDisableClientState(GL_COLOR_ARRAY);
4205          }
4206          else
4207          {
4208             noAB.use(vertex, 3, (mesh.flags.doubleVertices ? GL_DOUBLE : GL_FLOAT), 0, (double *)mesh.vertices);
4209             if((mesh.normals || mesh.flags.normals) && !display.display3D.collectingHits)
4210             {
4211                glEnableClientState(GL_NORMAL_ARRAY);
4212                noAB.use(normal, 3, GL_FLOAT, 0, mesh.normals);
4213             }
4214             else
4215                glDisableClientState(GL_NORMAL_ARRAY);
4216             if((mesh.texCoords || mesh.flags.texCoords1) && !display.display3D.collectingHits)
4217             {
4218                glEnableClientState(GL_TEXTURE_COORD_ARRAY);
4219                noAB.use(texCoord, 2, GL_FLOAT, 0, mesh.texCoords);
4220             }
4221             else
4222                glDisableClientState(GL_TEXTURE_COORD_ARRAY);
4223             if((mesh.colors || mesh.flags.colors) && !display.display3D.collectingHits)
4224             {
4225                glEnableClientState(GL_COLOR_ARRAY);
4226                noAB.use(color, 4, GL_FLOAT, 0, mesh.colors);
4227             }
4228             else
4229                glDisableClientState(GL_COLOR_ARRAY);
4230          }
4231
4232 #if !defined(__ANDROID__) && !defined(__APPLE__) && !defined(__EMSCRIPTEN__) && !defined(__ODROID__)
4233
4234 #if defined(__WIN32__)
4235          if(glLockArraysEXT)
4236 #endif
4237             if(!vboAvailable)
4238                glLockArraysEXT(0, mesh.nVertices);
4239
4240 #endif
4241       }
4242    }
4243
4244    void DrawPrimitives(Display display, PrimitiveSingle * primitive, Mesh mesh)
4245    {
4246       //Logf("DrawPrimitives\n");
4247
4248       if(primitive->type.vertexRange)
4249          glDrawArrays(primitiveTypes[primitive->type.primitiveType], primitive->first, primitive->nVertices);
4250       else
4251       {
4252          //    *** Hoping the data won't be uploaded at all (Won't really work if another group of the mesh is using the mesh ) ***
4253          // HACK TO SPEED THINGS UP...
4254 #ifndef __ANDROID__
4255          /*GLBindBuffer(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
4256          if(primitive->nIndices < (mesh.nVertices >> 2) && !primitive->type.indices32bit)
4257          {
4258             int c;
4259             glBegin(primitiveTypes[primitive->type.primitiveType]);
4260             if(primitive->data)
4261             {
4262                OGLIndices oglIndices = primitive->data;
4263                MeshFeatures flags = mesh.flags;
4264                for(c = 0; c<primitive->nIndices; c++)
4265                {
4266                   uint16 index = ((uint16 *) oglIndices.indices)[c];
4267                   if(flags.normals) glNormal3fv((float *)&mesh.normals[index]);
4268                   if(flags.texCoords1) glTexCoord2fv((float *)&mesh.texCoords[index]);
4269                   if(flags.colors) glColor4fv((float *)&mesh.colors[index]);
4270                   glVertex3fv((float *)&mesh.vertices[index]);
4271                }
4272             }
4273             glEnd();
4274          }
4275          else*/
4276 #endif
4277          {
4278             OGLIndices oglIndices = primitive->data;
4279
4280             if(!display.display3D.collectingHits && vboAvailable && oglIndices)
4281             {
4282                if(primitive->type.indices32bit)
4283                   ; //oglIndices.buffer.draw(primitiveTypes[primitive->type.primitiveType], primitive->nIndices, GL_UNSIGNED_SHORT, 0);
4284                else
4285                   oglIndices.buffer.draw(primitiveTypes[primitive->type.primitiveType], primitive->nIndices, GL_UNSIGNED_SHORT, 0);
4286             }
4287             else
4288             {
4289                if(primitive->type.indices32bit)
4290                   glDrawElementsi(primitiveTypes[primitive->type.primitiveType], primitive->nIndices,
4291                      oglIndices ? oglIndices.indices : primitive->indices);
4292                else
4293                   glDrawElements(primitiveTypes[primitive->type.primitiveType], primitive->nIndices,
4294                      GL_UNSIGNED_SHORT, oglIndices ? oglIndices.indices : primitive->indices);
4295             }
4296          }
4297       }
4298    }
4299
4300    void PushMatrix(Display display)
4301    {
4302       glPushMatrix();
4303    }
4304
4305    void PopMatrix(Display display, bool setMatrix)
4306    {
4307       glPopMatrix();
4308    }
4309
4310    void SetTransform(Display display, Matrix transMatrix, bool viewSpace, bool useCamera)
4311    {
4312       Matrix matrix = transMatrix;
4313       Camera camera = useCamera ? display.display3D.camera : null;
4314
4315       if(viewSpace)
4316       {
4317          glLoadIdentity();
4318          glScaled(1.0/nearPlane, 1.0/nearPlane, -1.0/nearPlane);
4319       }
4320       else if(camera)
4321       {
4322          glTranslated(
4323             matrix.m[3][0] - camera.cPosition.x,
4324             matrix.m[3][1] - camera.cPosition.y,
4325             matrix.m[3][2] - camera.cPosition.z);
4326       }
4327       else
4328          glTranslated(
4329             matrix.m[3][0],
4330             matrix.m[3][1],
4331             matrix.m[3][2]);
4332
4333       matrix.m[3][0] = 0;
4334       matrix.m[3][1] = 0;
4335       matrix.m[3][2] = 0;
4336
4337       glMultMatrixd(matrix.array);
4338    }
4339 #endif
4340 }
4341
4342 public void UseSingleGLContext(bool useSingle)
4343 {
4344    useSingleGLContext = useSingle;
4345 }
4346
4347 default dllexport void *
4348 #if defined(__WIN32__)
4349 __attribute__((stdcall))
4350 #endif
4351 IS_GLGetContext(DisplaySystem displaySystem)
4352 {
4353    if(displaySystem)
4354    {
4355 #if defined(__WIN32__)
4356       OGLSystem system = displaySystem.driverData;
4357       return system.glrc;
4358 #elif defined(__ANDROID__) || defined(__ODROID__)
4359       return eglContext;
4360 #elif defined(__EMSCRIPTEN__)
4361 #else
4362       OGLSystem system = displaySystem.driverData;
4363       return system.glContext;
4364 #endif
4365    }
4366    return null;
4367 }
4368
4369 #endif