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, this);
1354          if(curArrayBuffer != buffer)
1355             GLBindBuffer(GL_ARRAY_BUFFER, buffer);
1356          glBufferData(GL_ARRAY_BUFFER, size, data, GL_STATIC_DRAW);  //GL_DYNAMIC_DRAW);
1357       }
1358    }
1359
1360    void free()
1361    {
1362       if(this != null)
1363       {
1364          GLDeleteBuffers(1, this);
1365          buffer = 0;
1366       }
1367    }
1368
1369    void use(GLBufferContents contents, int n, int type, uint stride, void * pointer)
1370    {
1371       if(curArrayBuffer != ((this != null) ? buffer : 0))
1372          GLBindBuffer(GL_ARRAY_BUFFER, ((this != null) ? buffer : 0));
1373       switch(contents)
1374       {
1375          case normal:   glNormalPointer(type, stride, pointer); break;
1376          case vertex:   glVertexPointer(n, type, stride, pointer); break;
1377          case texCoord: glTexCoordPointer(n, type, stride, pointer); break;
1378          case color:    glColorPointer(n, type, stride, pointer); break;
1379       }
1380    }
1381 };
1382
1383 static uint curElementBuffer;
1384
1385 public define noEAB = GLEAB { 0 };
1386
1387 public struct GLEAB
1388 {
1389    uint buffer;
1390
1391    void upload(uint size, void * data)
1392    {
1393       if(this != null)
1394       {
1395          if(!buffer)
1396             GLGenBuffers(1, (GLAB *)this);
1397
1398          if(curElementBuffer != buffer)
1399             GLBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer);
1400          glBufferData(GL_ELEMENT_ARRAY_BUFFER, size, data, GL_STATIC_DRAW);  //GL_DYNAMIC_DRAW);
1401       }
1402    }
1403
1404    void free()
1405    {
1406       if(this != null)
1407       {
1408          GLDeleteBuffers(1, (GLAB *)this);
1409          buffer = 0;
1410       }
1411    }
1412
1413    void draw(int primType, int count, int type, void * indices)
1414    {
1415       if(curElementBuffer != ((this != null) ? buffer : 0))
1416          GLBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ((this != null) ? buffer : 0));
1417       glDrawElements(primType, count, type, indices);
1418    }
1419 };
1420
1421 public void GLGenBuffers(int count, GLAB * buffers)
1422 {
1423 #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
1424    glGenBuffers(count, (GLuint *)buffers);
1425 #else
1426 #if defined(__WIN32__)
1427    if(glGenBuffersARB)
1428 #endif
1429       glGenBuffersARB(count, (GLuint *)buffers);
1430 #endif
1431 }
1432
1433 public void GLDeleteBuffers(int count, GLAB * buffers)
1434 {
1435    int i;
1436    for(i = 0; i < count; i++)
1437    {
1438       uint buffer = buffers[i].buffer;
1439       if(buffer == curArrayBuffer)
1440          GLBindBuffer(GL_ARRAY_BUFFER_ARB, 0);
1441       else if(buffer == curElementBuffer)
1442          GLBindBuffer(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
1443    }
1444 #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
1445    glDeleteBuffers(count, (GLuint *)buffers);
1446 #else
1447 #if defined(__WIN32__)
1448    if(glDeleteBuffersARB)
1449 #endif
1450       glDeleteBuffersARB(count, (GLuint *)buffers);
1451 #endif
1452 }
1453
1454 void GLBindBuffer(int target, uint buffer)
1455 {
1456 #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
1457    glBindBuffer(target, buffer);
1458 #else
1459 #if defined(__WIN32__)
1460    if(glBindBufferARB)
1461 #endif
1462       glBindBufferARB(target, buffer);
1463 #endif
1464    if(target == GL_ARRAY_BUFFER_ARB)
1465       curArrayBuffer = buffer;
1466    else if(target == GL_ELEMENT_ARRAY_BUFFER_ARB)
1467       curElementBuffer = buffer;
1468 }
1469
1470 public void GLVertexPointer(int numCoords, int glType, int stride, void *ptr, int numVertices)
1471 {
1472 #ifdef _GLES
1473    if(glType == GL_DOUBLE)
1474       glesVertexPointerd(numCoords, stride, ptr, numVertices);
1475    else if(glType == GL_INT)
1476       glesVertexPointeri(numCoords, stride, ptr, numVertices);
1477    else
1478 #endif
1479       glVertexPointer(numCoords, glType, stride, ptr);
1480 }
1481
1482 public void GLBufferData(int type, GLenum target, int size, const GLvoid *data, GLenum usage)
1483 {
1484 #ifdef _GLES
1485    if(type == GL_DOUBLE)
1486       glesBufferDatad(target, size, (void *)data, usage);
1487    else if(type == GL_UNSIGNED_INT)
1488       glesBufferDatai(target, size, (void *)data, usage);
1489    else
1490 #endif
1491
1492 #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
1493       glBufferData(target, size, data, usage);
1494 #else
1495
1496 #if defined(__WIN32__)
1497    if(glBufferDataARB)
1498 #endif
1499       glBufferDataARB(target, size, data, usage);
1500 #endif
1501 }
1502
1503 #if !defined(ECERE_NO3D) && !defined(ECERE_VANILLA)
1504 static int primitiveTypes[RenderPrimitiveType] =
1505 {
1506    GL_POINTS, GL_LINES, GL_TRIANGLES, GL_TRIANGLE_STRIP, GL_TRIANGLE_FAN, GL_QUADS, GL_QUAD_STRIP, GL_LINE_STRIP
1507 };
1508 #endif
1509
1510
1511 // Non OpenGL ES friendly stuff
1512
1513 #if defined(_GLES)
1514
1515 //#undef GL_UNSIGNED_INT
1516 //#undef GL_DOUBLE
1517 #undef GL_INT
1518 //#undef GL_POLYGON
1519 //#undef GL_QUADS
1520 #undef GL_QUAD_STRIP
1521 #undef GL_POLYGON_STIPPLE
1522 #undef GL_LINE_STIPPLE
1523 #undef GL_LINE
1524 #undef GL_FILL
1525 #undef GL_ALL_ATTRIB_BITS
1526 #undef GL_LIGHT_MODEL_LOCAL_VIEWER
1527
1528 #endif
1529
1530 static int displayWidth, displayHeight;
1531
1532 #define GL_CLAMP_TO_EDGE 0x812F
1533
1534 static bool vboAvailable;
1535
1536 static bool useSingleGLContext = false;
1537 class OGLDisplay : struct
1538 {
1539 #if defined(__WIN32__)
1540    HDC hdc;
1541    HGLRC glrc;
1542
1543    HBITMAP memBitmap;
1544    HDC memDC;
1545    byte * picture;
1546    uint stride;
1547    void * pBuffer;
1548    /*
1549    int imageBuffers[2];
1550    byte * pboMemory1, * pboMemory2;
1551    */
1552 #elif !defined(__ANDROID__) && !defined(__EMSCRIPTEN__) && !defined(__ODROID__)
1553    GLXContext glContext;
1554
1555    Pixmap pixmap;
1556    XShmSegmentInfo shminfo;
1557    XImage * image;
1558    XShmSegmentInfo shminfoShape;
1559    XImage * shapeImage;
1560    byte * picture;
1561    uint stride;
1562    GLXPbuffer pBuffer;
1563    X11Picture windowPicture;
1564    X11Picture pixmapPicture;
1565    Pixmap shapePixmap;
1566    X11Picture shapePicture;
1567 #endif
1568
1569    ColorAlpha * flippingBuffer;
1570    int flipBufH, flipBufW;
1571    bool depthWrite;
1572    int x, y;
1573 };
1574
1575 class OGLSystem : struct
1576 {
1577    int maxTextureSize;
1578    bool loadingFont;
1579    bool pow2textures;
1580 #if defined(__WIN32__)
1581    PIXELFORMATDESCRIPTOR pfd;
1582    int format;
1583    HDC hdc;
1584    HGLRC glrc;
1585    HWND hwnd;
1586 #elif !defined(__ANDROID__) && !defined(__EMSCRIPTEN__) && !defined(__ODROID__)
1587    XVisualInfo * visualInfo;
1588    GLXContext glContext;
1589    GLXDrawable glxDrawable;
1590 #endif
1591 };
1592
1593 class OGLSurface : struct
1594 {
1595    Font font;
1596    bool opaqueText;
1597    int xOffset;
1598    bool writingText;
1599    bool writingOutline;
1600
1601    float foreground[4], background[4], bitmapMult[4];
1602 } OGLSurface;
1603
1604 class OGLMesh : struct
1605 {
1606    GLAB vertices;
1607    GLAB normals;
1608    GLAB texCoords;
1609    GLAB texCoords2;
1610    GLAB colors;
1611 };
1612
1613 class OGLIndices : struct
1614 {
1615    uint16 * indices;
1616    GLEAB buffer;
1617    uint nIndices;
1618 };
1619
1620 int current;
1621 void * previous;
1622
1623 class OpenGLDisplayDriver : DisplayDriver
1624 {
1625    class_property(name) = "OpenGL";
1626
1627    bool LockSystem(DisplaySystem displaySystem)
1628    {
1629 #if !defined(__ANDROID__) && !defined(__EMSCRIPTEN__) && !defined(__ODROID__)
1630       OGLSystem oglSystem = displaySystem.driverData;
1631       if(useSingleGLContext) return true;
1632    #if defined(__WIN32__)
1633       wglMakeCurrent(oglSystem.hdc, oglSystem.glrc);
1634    #elif defined(__unix__) || defined(__APPLE__)
1635       //if(previous) return true;
1636       // printf("Making SYSTEM current\n");
1637       glXMakeCurrent(xGlobalDisplay, (GLXDrawable)oglSystem.glxDrawable, oglSystem.glContext);
1638       //previous = oglSystem.glContext;
1639    #endif
1640 #endif
1641       return true;
1642    }
1643
1644    void UnlockSystem(DisplaySystem displaySystem)
1645    {
1646       if(useSingleGLContext) return;
1647    #if defined(__WIN32__)
1648       wglMakeCurrent(null, null);
1649    #elif defined(__unix__) || defined(__APPLE__)
1650       // printf("Making NULL current\n");
1651       #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
1652       #else
1653       glXMakeCurrent(xGlobalDisplay, None, null);
1654       #endif
1655       // previous = null;
1656    #endif
1657    }
1658
1659    bool Lock(Display display)
1660    {
1661 #if !defined(__ANDROID__) && !defined(__EMSCRIPTEN__) && !defined(__ODROID__)
1662       OGLDisplay oglDisplay = display.driverData;
1663       if(useSingleGLContext) return true;
1664    #if defined(__WIN32__)
1665       wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
1666    #elif defined(__unix__) || defined(__APPLE__)
1667       // if(previous) glXMakeCurrent(xGlobalDisplay, None, null);
1668       // printf("   Making DISPLAY current\n");
1669       glXMakeCurrent(xGlobalDisplay, (GLXDrawable)display.window, oglDisplay.glContext);
1670    #endif
1671 #endif
1672       return true;
1673    }
1674
1675    void Unlock(Display display)
1676    {
1677       if(useSingleGLContext) return;
1678       //printf("   Making NULL current\n");
1679       //glXMakeCurrent(xGlobalDisplay, None, null);
1680       // if(previous)
1681          LockSystem(display.displaySystem);
1682    }
1683
1684    void DestroyDisplay(Display display)
1685    {
1686       OGLDisplay oglDisplay = display.driverData;
1687
1688       if(oglDisplay)
1689       {
1690    #if defined(__WIN32__)
1691          wglMakeCurrent( null, null );
1692
1693          if(oglDisplay.glrc)
1694             wglDeleteContext(oglDisplay.glrc);
1695
1696          if(oglDisplay.hdc && oglDisplay.pBuffer)
1697             wglReleasePbufferDCARB(oglDisplay.pBuffer, oglDisplay.hdc);
1698
1699          if(oglDisplay.pBuffer)
1700             wglDestroyPbufferARB(oglDisplay.pBuffer);
1701
1702          if(oglDisplay.hdc)
1703             ReleaseDC(display.window, oglDisplay.hdc);
1704
1705          if(oglDisplay.memDC) DeleteDC(oglDisplay.memDC);
1706          if(oglDisplay.memBitmap) DeleteObject(oglDisplay.memBitmap);
1707
1708    #elif defined(__unix__) || defined(__APPLE__)
1709       #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
1710       #else
1711          if(oglDisplay.shapePixmap)
1712             XFreePixmap(xGlobalDisplay, oglDisplay.shapePixmap);
1713          if(oglDisplay.pixmap)
1714             XFreePixmap(xGlobalDisplay, oglDisplay.pixmap);
1715          if(oglDisplay.image)
1716          {
1717             if(oglDisplay.shminfoShape.shmid != -1)
1718             {
1719                XShmDetach(xGlobalDisplay, &oglDisplay.shminfo);
1720                if(oglDisplay.shminfo.shmaddr != (void *)-1)
1721                   shmdt(oglDisplay.shminfo.shmaddr);
1722                shmctl(oglDisplay.shminfo.shmid, IPC_RMID, 0);
1723             }
1724          }
1725          if(oglDisplay.shapeImage)
1726          {
1727             if(oglDisplay.shminfoShape.shmid != -1)
1728             {
1729                XShmDetach(xGlobalDisplay, &oglDisplay.shminfoShape);
1730                if(oglDisplay.shminfoShape.shmaddr != (void *)-1)
1731                   shmdt(oglDisplay.shminfoShape.shmaddr);
1732                shmctl(oglDisplay.shminfoShape.shmid, IPC_RMID, 0);
1733             }
1734             XDestroyImage(oglDisplay.shapeImage);
1735             oglDisplay.shapeImage = None;
1736          }
1737
1738          glXMakeCurrent(xGlobalDisplay, None, null);
1739
1740          if(oglDisplay.glContext)
1741             glXDestroyContext(xGlobalDisplay, oglDisplay.glContext);
1742       #endif
1743    #endif
1744          delete oglDisplay.flippingBuffer;
1745          delete oglDisplay;
1746          display.driverData = null;
1747       }
1748    }
1749
1750    void ::CheckExtensions(OGLSystem oglSystem)
1751    {
1752       const char * extensions = (const char *)glGetString(GL_EXTENSIONS);
1753       if(extensions)
1754          oglSystem.pow2textures = strstr(extensions, "GL_ARB_texture_non_power_of_two") ? false : true;
1755       glGetIntegerv(GL_MAX_TEXTURE_SIZE, &oglSystem.maxTextureSize);
1756    }
1757
1758    bool CreateDisplaySystem(DisplaySystem displaySystem)
1759    {
1760       bool result = false;
1761       OGLSystem oglSystem = displaySystem.driverData = OGLSystem { };
1762
1763    #ifdef __WIN32__
1764       oglSystem.hwnd = CreateWindow("static", null, 0,0,0,0,0,null,null,null,null);
1765
1766       oglSystem.hdc = GetDC(oglSystem.hwnd);
1767       if(oglSystem.hdc)
1768       {
1769
1770          oglSystem.pfd.nSize = (short)sizeof(oglSystem.pfd);
1771          oglSystem.pfd.nVersion = 1;
1772          oglSystem.pfd.dwFlags = PFD_DRAW_TO_WINDOW /*PFD_DRAW_TO_BITMAP*/ | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
1773          oglSystem.pfd.iPixelType = PFD_TYPE_RGBA;
1774          oglSystem.pfd.cColorBits = 24;
1775          oglSystem.pfd.cAlphaBits = 8;
1776          oglSystem.pfd.cDepthBits = 24;
1777          oglSystem.pfd.iLayerType = PFD_MAIN_PLANE;
1778
1779          oglSystem.format = ChoosePixelFormat(oglSystem.hdc, &oglSystem.pfd);
1780          DescribePixelFormat(oglSystem.hdc, oglSystem.format, sizeof(oglSystem.pfd), &oglSystem.pfd);
1781
1782          if(oglSystem.pfd.cColorBits > 8)
1783          {
1784             SetPixelFormat(oglSystem.hdc, oglSystem.format, &oglSystem.pfd);
1785             oglSystem.glrc = wglCreateContext(oglSystem.hdc);
1786             if(oglSystem.glrc)
1787             {
1788                wglMakeCurrent(oglSystem.hdc, oglSystem.glrc);
1789
1790                  // Get Pointers To The GL Functions
1791                glActiveTextureARB = (void *) wglGetProcAddress("glActiveTextureARB");
1792                glMultiTexCoord2fARB = (void *) wglGetProcAddress("glMultiTexCoord2fARB");
1793                glClientActiveTextureARB = (void *) wglGetProcAddress("glClientActiveTextureARB");
1794                glLockArraysEXT = (void *) wglGetProcAddress("glLockArraysEXT" );
1795                glUnlockArraysEXT = (void *) wglGetProcAddress("glUnlockArraysEXT");
1796                  glGenBuffersARB = (void *) wglGetProcAddress("glGenBuffersARB");
1797                  glBindBufferARB = (void *) wglGetProcAddress("glBindBufferARB");
1798                  glBufferDataARB = (void *) wglGetProcAddress("glBufferDataARB");
1799                glMapBufferARB  = (void *) wglGetProcAddress("glMapBufferARB");
1800                glUnmapBufferARB  = (void *) wglGetProcAddress("glUnmapBufferARB");
1801                  glDeleteBuffersARB = (void *) wglGetProcAddress("glDeleteBuffersARB");
1802                glBlendFuncSeparate = (void *) wglGetProcAddress("glBlendFuncSeparate");
1803
1804                wglChoosePixelFormatARB = (void *) wglGetProcAddress("wglChoosePixelFormatARB");
1805                wglGetExtensionsStringARB = (void *)wglGetProcAddress("wglGetExtensionsStringARB");
1806                wglCreatePbufferARB = (void *)wglGetProcAddress("wglCreatePbufferARB");
1807                wglGetPbufferDCARB = (void *)wglGetProcAddress("wglGetPbufferDCARB");
1808                wglQueryPbufferARB = (void *)wglGetProcAddress("wglQueryPbufferARB");
1809                wglDestroyPbufferARB = (void *)wglGetProcAddress("wglDestroyPbufferARB");
1810                wglReleasePbufferDCARB = (void *)wglGetProcAddress("wglReleasePbufferDCARB");
1811                wglBindTexImageARB = (void *)wglGetProcAddress("wglBindTexImageARB");
1812                wglReleaseTexImageARB = (void *)wglGetProcAddress("wglReleaseTexImageARB");
1813
1814                wglSwapIntervalEXT = (void *)wglGetProcAddress("wglSwapIntervalEXT");
1815
1816                vboAvailable = glBindBufferARB != null;
1817
1818                // eSystem_LoggingMode(LOG_MSGBOX, null);
1819
1820                if(wglChoosePixelFormatARB)
1821                {
1822                     int pixelFormat;
1823                     int valid;
1824                     int numFormats;
1825                     float fAttributes[] = {0,0};
1826                     int iAttributes[] =
1827                   {
1828                      WGL_DRAW_TO_WINDOW_ARB,GL_TRUE,
1829                             WGL_SUPPORT_OPENGL_ARB,GL_TRUE,
1830                             WGL_ACCELERATION_ARB,WGL_FULL_ACCELERATION_ARB,
1831                             WGL_COLOR_BITS_ARB,24,
1832                             WGL_ALPHA_BITS_ARB,8,
1833                             WGL_DEPTH_BITS_ARB,16,
1834                             WGL_STENCIL_BITS_ARB,0,
1835                             WGL_DOUBLE_BUFFER_ARB,GL_TRUE,
1836                             WGL_SAMPLE_BUFFERS_ARB,GL_TRUE,
1837                             WGL_SAMPLES_ARB, 4,                                         // Check For 4x Multisampling
1838                             0,0
1839                   };
1840
1841                   //Log("Found wglChoosePixelFormatARB\n");
1842
1843                     valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1844                     if(!valid || !numFormats)
1845                     {
1846                      //Log("Can't find 4x multi sampling\n");
1847                        iAttributes[19] = 2;
1848                        valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1849                      if(!valid || !numFormats)
1850                      {
1851                         // Log("Can't find 2x multi sampling\n");
1852                         iAttributes[16] = 0;
1853                         iAttributes[17] = 0;
1854                         valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1855                      }
1856                     }
1857                   if(valid && numFormats)
1858                   {
1859                      oglSystem.format = pixelFormat;
1860                      wglMakeCurrent(null, null);
1861                      wglDeleteContext(oglSystem.glrc);
1862
1863                      // *** DescribePixelFormat does not support WGL pixel formats! ***
1864                      //DescribePixelFormat(oglSystem.hdc, oglSystem.format, sizeof(oglSystem.pfd), &oglSystem.pfd);
1865                      SetPixelFormat(oglSystem.hdc, oglSystem.format, &oglSystem.pfd);
1866                      //Log("Successfully set pixel format\n");
1867
1868                      oglSystem.glrc = wglCreateContext(oglSystem.hdc);
1869                      wglMakeCurrent(oglSystem.hdc, oglSystem.glrc);
1870                   }
1871                }
1872                /*else
1873                   eSystem_Logf("Can't find wglChoosePixelFormatARB\n");*/
1874
1875                result = true;
1876
1877                CheckExtensions(oglSystem);
1878
1879                wglMakeCurrent(null, null);
1880
1881                //eSystem_DumpErrors(true);
1882             }
1883          }
1884       }
1885    #elif defined(__unix__) || defined(__APPLE__)
1886       vboAvailable = true;
1887       #if defined(__ANDROID__)
1888          egl_init_display(guiApp.desktop.windowHandle);
1889       #elif defined(__ODROID__)
1890          egl_init_display((uint)displaySystem.window);
1891          CheckExtensions(oglSystem);
1892          result = true;
1893       #elif defined(__EMSCRIPTEN__)
1894          if(glfwInit() == GL_TRUE)
1895          {
1896             const int width = 640, height = 480;
1897             if(glfwOpenWindow(width, height, 8, 8, 8, 8, 16, 0, GLFW_WINDOW) == GL_TRUE)
1898             {
1899                //glfwSwapBuffers();
1900                result = true;
1901             }
1902             else
1903                printf("glfwOpenWindow() failed\n"); //glfwTerminate();
1904          }
1905          else
1906             printf("glfwInit() failed\n"); //glfwTerminate();
1907       #else
1908       {
1909          X11Window root = RootWindow( xGlobalDisplay, DefaultScreen( xGlobalDisplay ) );
1910          XSetWindowAttributes attr;
1911          unsigned long mask;
1912
1913          int attrList[] =
1914          {
1915       #ifndef ECERE_MINIGLX
1916             GLX_USE_GL, GLX_DEPTH_SIZE, 1,
1917       #endif
1918             GLX_RGBA,
1919             GLX_RED_SIZE, 1, GLX_GREEN_SIZE, 1, GLX_BLUE_SIZE, 1,
1920             GLX_DOUBLEBUFFER,
1921             None
1922          };
1923          oglSystem.visualInfo = glXChooseVisual( xGlobalDisplay,  DefaultScreen( xGlobalDisplay ), attrList );
1924          attr.background_pixel = 0;
1925          attr.border_pixel = 0;
1926          attr.colormap = XCreateColormap( xGlobalDisplay, root, oglSystem.visualInfo->visual, AllocNone);
1927          attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
1928          mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
1929
1930          oglSystem.glxDrawable = XCreateWindow( xGlobalDisplay, root, 0, 0, 1, 1, 0, oglSystem.visualInfo->depth, InputOutput,
1931             oglSystem.visualInfo->visual, mask, &attr );
1932       }
1933       if(oglSystem.visualInfo)
1934       {
1935          oglSystem.glContext = glXCreateContext(xGlobalDisplay, oglSystem.visualInfo, null, True);
1936          if(oglSystem.glContext)
1937          {
1938             glXMakeCurrent(xGlobalDisplay, oglSystem.glxDrawable, oglSystem.glContext);
1939             // Setup Extensions
1940             CheckExtensions(oglSystem);
1941             glXMakeCurrent(xGlobalDisplay, None, null);
1942             result = true;
1943          }
1944       }
1945       #endif
1946    #endif
1947
1948       displaySystem.flags.alpha = true;
1949       displaySystem.flags.flipping = true;
1950       displaySystem.pixelFormat = pixelFormat888;
1951       return result;
1952    }
1953
1954    void DestroyDisplaySystem(DisplaySystem displaySystem)
1955    {
1956       OGLSystem oglSystem = displaySystem.driverData;
1957
1958    #if defined(__WIN32__)
1959       wglMakeCurrent( null, null );
1960
1961       if(oglSystem.glrc)
1962          wglDeleteContext(oglSystem.glrc);
1963
1964       if(oglSystem.hdc)
1965          ReleaseDC(oglSystem.hwnd, oglSystem.hdc);
1966       DestroyWindow(oglSystem.hwnd);
1967
1968    #elif defined(__unix__) || defined(__APPLE__)
1969       #if defined(__ANDROID__) || defined(__ODROID__)
1970          egl_term_display();
1971       #elif defined(__EMSCRIPTEN__)
1972          glfwTerminate();
1973       #else
1974       if(oglSystem.visualInfo)
1975       {
1976    #ifdef   ECERE_MINIGLX
1977          __miniglx_XFree(oglSystem.visualInfo);
1978    #else
1979          XFree(oglSystem.visualInfo);
1980    #endif
1981       }
1982
1983       if(oglSystem.glxDrawable)
1984       {
1985          XDestroyWindow(xGlobalDisplay, oglSystem.glxDrawable);
1986          oglSystem.glxDrawable = 0;
1987       }
1988       #endif
1989    #endif
1990       delete oglSystem;
1991    }
1992
1993    bool CreateDisplay(Display display)
1994    {
1995       bool result = false;
1996       OGLDisplay oglDisplay = display.driverData;
1997 #if !defined(__ANDROID__) && !defined(__EMSCRIPTEN__) && !defined(__ODROID__)
1998       OGLSystem oglSystem = display.displaySystem.driverData;
1999 #endif
2000       if(!oglDisplay)
2001          oglDisplay = display.driverData = OGLDisplay { };
2002       //printf("Inside CreateDisplay\n");
2003
2004 #if defined(__WIN32__) || defined(USEPBUFFER)
2005       if(!display.alphaBlend)
2006 #endif
2007       {
2008    #if defined(__WIN32__)
2009          oglDisplay.hdc = GetDC(display.window);
2010          SetPixelFormat(oglDisplay.hdc, oglSystem.format, &oglSystem.pfd);
2011          if((oglDisplay.glrc = wglCreateContext(oglDisplay.hdc)))
2012          {
2013             wglShareLists(oglSystem.glrc, oglDisplay.glrc);
2014             wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
2015             result = true;
2016          }
2017          else
2018             ReleaseDC(display.window, oglDisplay.hdc);
2019    #elif defined(__unix__) || defined(__APPLE__)
2020       #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
2021       #else
2022          XVisualInfo * visualInfo = ((XWindowData)display.windowDriverData).visual;
2023          /*
2024 #if defined(__APPLE__)
2025          XVisualInfo template = { 0 };
2026          XWindowAttributes winAttr;
2027          int n;
2028          XGetWindowAttributes(xGlobalDisplay, (X11Window)display.window, &winAttr);
2029          template.visualid = XVisualIDFromVisual(winAttr.visual);
2030          visualInfo = XGetVisualInfo(xGlobalDisplay, VisualIDMask, &template, &n);
2031 #ifdef _DEBUG
2032          printf("XGetVisualInfo visual ID = %d\n", template.visualid);
2033          printf("visualInfo visual ID = %d\n", visualInfo->visualid);
2034          printf("oglSystem.visualInfo visual ID = %d\n", oglSystem.visualInfo->visualid);
2035          printf("((XWindowData)display.windowDriverData).visual visual ID = %d\n", ((XWindowData)display.windowDriverData).visual->visualid);
2036 #endif
2037          // visualInfo = oglSystem.visualInfo;
2038 //#endif
2039          */
2040          if(visualInfo)
2041          {
2042             //printf("visualInfo is not null\n");
2043             // printf("Creating Display Context, sharing with %x!\n", oglSystem.glContext);
2044             oglDisplay.glContext = glXCreateContext(xGlobalDisplay, visualInfo, oglSystem.glContext, True);
2045             //XFree(visualInfo);
2046          }
2047
2048          // oglDisplay.glContext = glXCreateContext(xGlobalDisplay, oglSystem.visualInfo, oglSystem.glContext, True);
2049          if(oglDisplay.glContext)
2050          {
2051             //printf("CreateDisplay Got a Context\n");
2052             glXMakeCurrent(xGlobalDisplay, (GLXDrawable)display.window, oglDisplay.glContext);
2053             result = true;
2054          }
2055       #endif
2056    #endif
2057       }
2058 #if defined(__WIN32__) || defined(USEPBUFFER)
2059       else
2060          result = true;
2061 #endif
2062       if(result)
2063       {
2064 #if defined(__WIN32__)
2065          if(glBlendFuncSeparate)
2066             glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
2067          else
2068             glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2069 #else
2070 #if !defined(__OLDX__)
2071           glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
2072 #else
2073          glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2074 #endif
2075 #endif
2076          glEnable(GL_BLEND);
2077
2078          glMatrixMode(GL_MODELVIEW);
2079          glScaled(1.0, 1.0, -1.0);
2080          // glTranslatef(0.375f, 0.375f, 0.0f);
2081          // glTranslatef(-0.625f, -0.625f, 0.0f);
2082          glMatrixMode(GL_PROJECTION);
2083          glShadeModel(GL_FLAT);
2084
2085          // glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, true);
2086 #if !defined(EM_MODE)
2087          glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
2088 #endif
2089          glFogi(GL_FOG_MODE, GL_EXP);
2090          glFogf(GL_FOG_DENSITY, 0);
2091          glEnable(GL_NORMALIZE);
2092          glDepthFunc(GL_LESS);
2093          glClearDepth(1.0);
2094          glDisable(GL_MULTISAMPLE_ARB);
2095       }
2096 #if !defined(ECERE_NO3D) && !defined(ECERE_VANILLA)
2097       display.ambient = Color { 50,50,50 };
2098 #endif
2099
2100       if(!useSingleGLContext)
2101       {
2102    #if defined(__WIN32__)
2103          wglMakeCurrent(null, null);
2104    #elif defined(__unix__) || defined(__APPLE__)
2105       #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
2106          result = true;
2107       #else
2108          glXMakeCurrent(xGlobalDisplay, None, null);
2109       #endif
2110    #endif
2111       }
2112       else
2113       {
2114       #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
2115          result = true;
2116       #endif
2117       }
2118
2119       return result;
2120    }
2121
2122    bool DisplaySize(Display display, int width, int height)
2123    {
2124       OGLDisplay oglDisplay = display.driverData;
2125
2126       bool result = false;
2127
2128       //printf("Inside DisplaySize\n");
2129 #if defined(__WIN32__) || defined(USEPBUFFER)
2130       OGLSystem oglSystem = display.displaySystem.driverData;
2131       if(display.alphaBlend)
2132       {
2133 #if defined(__WIN32__)
2134          const int attributes[]=
2135          {
2136             /*WGL_TEXTURE_FORMAT_ARB, WGL_TEXTURE_RGBA_ARB,
2137             WGL_TEXTURE_TARGET_ARB, WGL_TEXTURE_2D_ARB, */0
2138          };
2139          int pixelFormat = 0;
2140          if(wglChoosePixelFormatARB)
2141          {
2142             int valid;
2143             int numFormats;
2144             float fAttributes[] = {0,0};
2145             int iAttributes[] =
2146             {
2147                //WGL_DRAW_TO_BITMAP_ARB, GL_TRUE,
2148                WGL_DRAW_TO_PBUFFER_ARB,GL_TRUE,
2149                     WGL_SUPPORT_OPENGL_ARB,GL_TRUE,
2150                     WGL_ACCELERATION_ARB,WGL_FULL_ACCELERATION_ARB,
2151                     WGL_COLOR_BITS_ARB,24,
2152                     WGL_ALPHA_BITS_ARB,8,
2153                     WGL_DEPTH_BITS_ARB,16,
2154                     WGL_STENCIL_BITS_ARB,0,
2155                     WGL_DOUBLE_BUFFER_ARB,GL_FALSE,
2156                     WGL_SAMPLE_BUFFERS_ARB,GL_TRUE,
2157                     WGL_SAMPLES_ARB, 4,                                         // Check For 4x Multisampling
2158                     0,0
2159             };
2160
2161             //Log("Found wglChoosePixelFormatARB\n");
2162
2163             valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
2164             if(!valid || !numFormats)
2165             {
2166                //Log("Can't find 4x multi sampling\n");
2167                iAttributes[19] = 2;
2168                valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
2169                if(!valid || !numFormats)
2170                {
2171                   // Log("Can't find 2x multi sampling\n");
2172                   iAttributes[16] = 0;
2173                   iAttributes[17] = 0;
2174                   valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
2175                   if(!valid || !numFormats)
2176                   {
2177                      int iAttributes[] =
2178                      {
2179                         WGL_DRAW_TO_PBUFFER_ARB,GL_TRUE,
2180                         //WGL_DRAW_TO_BITMAP_ARB,GL_TRUE,
2181                         WGL_SUPPORT_OPENGL_ARB,GL_TRUE,
2182                         WGL_COLOR_BITS_ARB,24,
2183                         WGL_ALPHA_BITS_ARB,8,
2184                         WGL_DEPTH_BITS_ARB,16,
2185                         0,0
2186                      };
2187                      valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
2188                   }
2189                }
2190             }
2191             if(valid && numFormats)
2192             {
2193                wglMakeCurrent(null, null);
2194             }
2195          }
2196
2197          wglMakeCurrent( null, null );
2198          wglMakeCurrent( oglDisplay.hdc, oglDisplay.glrc );
2199          if(oglDisplay.hdc && oglDisplay.pBuffer)
2200             wglReleasePbufferDCARB(oglDisplay.pBuffer, oglDisplay.hdc);
2201
2202          wglDestroyPbufferARB(oglDisplay.pBuffer);
2203
2204          if(!useSingleGLContext)
2205             wglMakeCurrent( null, null );
2206
2207          if(oglDisplay.glrc)
2208             wglDeleteContext(oglDisplay.glrc);
2209
2210          oglDisplay.pBuffer = wglCreatePbufferARB(oglSystem.hdc, pixelFormat, width, height, attributes);
2211          oglDisplay.hdc = wglGetPbufferDCARB(oglDisplay.pBuffer);
2212          if((oglDisplay.glrc = wglCreateContext(oglDisplay.hdc)))
2213          {
2214             BITMAPINFO * info;
2215             HDC hdc = GetDC(display.window);
2216
2217             wglShareLists(oglSystem.glrc, oglDisplay.glrc);
2218             wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
2219
2220             //wglQueryPbufferARB(pBuffer, WGL_PBUFFER_WIDTH_ARB, &width);
2221             //wglQueryPbufferARB(pBuffer, WGL_PBUFFER_HEIGHT_ARB, &height);
2222
2223             // glDeleteBuffersARB(2, oglDisplay.imageBuffers);
2224
2225             if((info = (BITMAPINFO *)new0 byte[sizeof(BITMAPINFOHEADER)+sizeof(RGBQUAD)*256]))
2226             {
2227                HBITMAP newBitmap;
2228
2229                if(oglDisplay.memDC) DeleteDC(oglDisplay.memDC);
2230                oglDisplay.memDC = CreateCompatibleDC(hdc);
2231                SetMapMode(oglDisplay.memDC, MM_TEXT);
2232                info->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
2233                info->bmiHeader.biPlanes = 1;
2234                info->bmiHeader.biCompression = BI_RGB;
2235                info->bmiHeader.biBitCount = 32; //(uint16)GetDeviceCaps(hdc, BITSPIXEL);
2236                info->bmiHeader.biWidth = width;
2237                info->bmiHeader.biHeight = height;
2238                newBitmap = CreateDIBSection(hdc, info, DIB_RGB_COLORS, &oglDisplay.picture, null, 0);
2239                if(newBitmap)
2240                {
2241                   SelectObject(oglDisplay.memDC, newBitmap);
2242                   if(oglDisplay.memBitmap) DeleteObject(oglDisplay.memBitmap);
2243                   /*
2244                   {
2245                      PIXELFORMATDESCRIPTOR pfd = { 0 };
2246                      pfd.nSize = (short)sizeof(pfd);
2247                      pfd.nVersion = 1;
2248                      pfd.dwFlags = PFD_DRAW_TO_BITMAP | PFD_SUPPORT_OPENGL;
2249                      pfd.iPixelType = PFD_TYPE_RGBA;
2250                      pfd.cColorBits = 32;
2251                      //pfd.cAlphaBits = 8;
2252                      pfd.cDepthBits = 24;
2253                      pfd.iLayerType = PFD_MAIN_PLANE;
2254
2255                      oglDisplay.hdc = oglDisplay.memDC;
2256
2257                      pixelFormat = ChoosePixelFormat(oglSystem.hdc, &pfd);
2258                      DescribePixelFormat(oglDisplay.hdc, pixelFormat, sizeof(pfd), &pfd);
2259                      SetPixelFormat(oglDisplay.hdc, pixelFormat, &pfd);
2260
2261                      oglDisplay.glrc = wglCreateContext(oglDisplay.hdc);
2262                      wglShareLists(oglSystem.glrc, oglDisplay.glrc);
2263                      wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
2264                   }
2265                   */
2266                   /*
2267                   {
2268                      const int imageSize = width * height * 4;
2269
2270                      glGenBuffersARB(2, oglDisplay.imageBuffers);
2271
2272                      glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2273                      glBufferDataARB(GL_PIXEL_PACK_BUFFER_ARB, imageSize, null, GL_STREAM_READ);
2274                      // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2275                      // glBufferDataARB(GL_PIXEL_PACK_BUFFER_ARB, imageSize / 2, null, GL_STREAM_READ);
2276                   }
2277                   */
2278                   oglDisplay.memBitmap = newBitmap;
2279                   oglDisplay.stride = width;
2280
2281                   result = true;
2282                }
2283                delete info;
2284             }
2285             ReleaseDC(display.window, hdc);
2286          }
2287 #elif defined(__unix__) || defined(__APPLE__)
2288       #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
2289          result = true;
2290       #else
2291         int attrib[] =
2292         {
2293                 GLX_DOUBLEBUFFER,  True,
2294             GLX_DEPTH_SIZE,    1,
2295                 GLX_RED_SIZE,      8,
2296                 GLX_GREEN_SIZE,    8,
2297                 GLX_BLUE_SIZE,     8,
2298                 GLX_ALPHA_SIZE,    8,
2299                 GLX_STENCIL_SIZE,  1,
2300                 //GLX_DEPTH_SIZE,    24,
2301                 GLX_RENDER_TYPE,   GLX_RGBA_BIT,
2302                 GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT | GLX_WINDOW_BIT,
2303                 None
2304         };
2305
2306         int PBattrib[] =
2307         {
2308                 GLX_PBUFFER_WIDTH,   width,
2309                 GLX_PBUFFER_HEIGHT,  height,
2310                 GLX_LARGEST_PBUFFER, False,
2311             None
2312         };
2313
2314         // choose a pixel format that meets our minimum requirements
2315         int count = 0;
2316
2317         GLXFBConfig *config = glXChooseFBConfig(xGlobalDisplay, DefaultScreen(xGlobalDisplay), attrib, &count);
2318          if(config)
2319          {
2320             if(oglDisplay.pixmap)
2321             {
2322                XFreePixmap(xGlobalDisplay, oglDisplay.pixmap);
2323                oglDisplay.pixmap = None;
2324             }
2325             if(oglDisplay.shapePixmap)
2326             {
2327                XFreePixmap(xGlobalDisplay, oglDisplay.shapePixmap);
2328                oglDisplay.shapePixmap = None;
2329             }
2330
2331             // Free Shared Memory Pixmap
2332             if(oglDisplay.image)
2333             {
2334                if(oglDisplay.shminfoShape.shmid != -1)
2335                {
2336                   XShmDetach(xGlobalDisplay, &oglDisplay.shminfo);
2337                   if(oglDisplay.shminfo.shmaddr != (void *)-1)
2338                      shmdt(oglDisplay.shminfo.shmaddr);
2339                   shmctl(oglDisplay.shminfo.shmid, IPC_RMID, 0);
2340                }
2341                XDestroyImage(oglDisplay.image);
2342                oglDisplay.image = None;
2343             }
2344             if(oglDisplay.shapeImage)
2345             {
2346                if(oglDisplay.shminfoShape.shmid != -1)
2347                {
2348                   XShmDetach(xGlobalDisplay, &oglDisplay.shminfoShape);
2349                   if(oglDisplay.shminfoShape.shmaddr != (void *)-1)
2350                      shmdt(oglDisplay.shminfoShape.shmaddr);
2351                   shmctl(oglDisplay.shminfoShape.shmid, IPC_RMID, 0);
2352                }
2353                XDestroyImage(oglDisplay.shapeImage);
2354                oglDisplay.shapeImage = None;
2355             }
2356
2357             if(oglDisplay.windowPicture)
2358                XRenderFreePicture(xGlobalDisplay, oglDisplay.windowPicture);
2359             if(oglDisplay.pixmapPicture)
2360                XRenderFreePicture(xGlobalDisplay, oglDisplay.pixmapPicture);
2361
2362             if(oglDisplay.pixmap)
2363                XFreePixmap(xGlobalDisplay, oglDisplay.pixmap);
2364
2365             if(oglDisplay.glContext)
2366                   glXDestroyContext(xGlobalDisplay, oglDisplay.glContext);
2367             if(oglDisplay.pBuffer)
2368                glXDestroyPbuffer(xGlobalDisplay, oglDisplay.pBuffer);
2369
2370                 oglDisplay.pBuffer = glXCreatePbuffer(xGlobalDisplay, config[0], PBattrib);
2371             if(oglDisplay.pBuffer)
2372             {
2373                    oglDisplay.glContext = glXCreateNewContext(xGlobalDisplay, config[0], GLX_RGBA_TYPE, oglSystem.glContext, True);
2374                if(oglDisplay.glContext)
2375                {
2376                   glXMakeCurrent(xGlobalDisplay, None, null);
2377                   glXMakeCurrent(xGlobalDisplay, (GLXDrawable)display.window, oglDisplay.glContext);
2378
2379                   // Initialize Shared Memory Pixmap
2380                   oglDisplay.image = XShmCreateImage(xGlobalDisplay, DefaultVisual(xGlobalDisplay, DefaultScreen(xGlobalDisplay)), 32,
2381                      ZPixmap, null, &oglDisplay.shminfo, width, height);
2382                   if(oglDisplay.image)
2383                   {
2384                      oglDisplay.shminfo.shmid = shmget(IPC_PRIVATE,
2385                         oglDisplay.image->bytes_per_line * oglDisplay.image->height, IPC_CREAT|0777);
2386                      if(oglDisplay.shminfo.shmid != -1)
2387                      {
2388                         oglDisplay.shminfo.shmaddr = shmat(oglDisplay.shminfo.shmid, 0, 0);
2389                         if(oglDisplay.shminfo.shmaddr != (void *)-1)
2390                         {
2391                            oglDisplay.shminfo.readOnly = False;
2392                            if(XShmAttach(xGlobalDisplay, &oglDisplay.shminfo))
2393                            {
2394                               oglDisplay.pixmap = XShmCreatePixmap(xGlobalDisplay, (X11Window)display.window, oglDisplay.shminfo.shmaddr,
2395                                  &oglDisplay.shminfo, width, height, 32);
2396
2397                               // Initialize Shared Memory Shape Pixmap
2398                               oglDisplay.shapeImage = XShmCreateImage(xGlobalDisplay, DefaultVisual(xGlobalDisplay, DefaultScreen(xGlobalDisplay)), 1,
2399                                  ZPixmap, null, &oglDisplay.shminfoShape, width, height);
2400                               if(oglDisplay.shapeImage)
2401                               {
2402                                  oglDisplay.shminfoShape.shmid = shmget(IPC_PRIVATE,
2403                                     oglDisplay.shapeImage->bytes_per_line * oglDisplay.shapeImage->height, IPC_CREAT|0777);
2404                                  if(oglDisplay.shminfoShape.shmid != -1)
2405                                  {
2406                                     oglDisplay.shminfoShape.shmaddr = shmat(oglDisplay.shminfoShape.shmid, 0, 0);
2407                                     if(oglDisplay.shminfoShape.shmaddr != (void *)-1)
2408                                     {
2409                                        oglDisplay.shminfoShape.readOnly = False;
2410                                        if(XShmAttach(xGlobalDisplay, &oglDisplay.shminfoShape))
2411                                        {
2412                                           oglDisplay.shapePixmap = XShmCreatePixmap(xGlobalDisplay, (X11Window)display.window, oglDisplay.shminfoShape.shmaddr,
2413                                              &oglDisplay.shminfoShape, width, height, 1);
2414                                           //oglDisplay.shapePixmap = XCreatePixmap(xGlobalDisplay, (X11Window)display.window, width, height, 1);
2415
2416                                           {
2417                                              XRenderPictureAttributes attributes = { 0 };
2418                                              XRenderPictFormat * format = XRenderFindStandardFormat(xGlobalDisplay, /*PictStandardRGB24*/ PictStandardARGB32);
2419                                              #if !defined(__APPLE__) && !defined(__OLDX__)
2420                                              attributes.repeat = RepeatNormal;
2421                                              #else
2422                                              attributes.repeat = 1;
2423                                              #endif
2424                                              oglDisplay.pixmapPicture = XRenderCreatePicture(xGlobalDisplay, oglDisplay.pixmap, format, CPRepeat, &attributes);
2425                                              oglDisplay.windowPicture = XRenderCreatePicture(xGlobalDisplay, (X11Window)display.window, format, 0, &attributes);
2426                                              oglDisplay.shapePicture = XRenderCreatePicture(xGlobalDisplay, oglDisplay.shapePixmap,
2427                                                 XRenderFindStandardFormat(xGlobalDisplay, PictStandardA1), 0, &attributes);
2428                                           }
2429
2430                                           oglDisplay.picture = oglDisplay.shminfo.shmaddr;
2431                                           oglDisplay.stride = oglDisplay.image->bytes_per_line / 4;
2432
2433                                           result = true;
2434                                        }
2435                                     }
2436                                  }
2437                               }
2438                            }
2439                         }
2440                      }
2441                   }
2442                }
2443             }
2444             XFree(config);
2445          }
2446      #endif
2447 #endif
2448          CreateDisplay(display);
2449 #if defined(__WIN32__)
2450          wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
2451 #elif defined(__unix__) || defined(__APPLE__)
2452       #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
2453          width = eglWidth;
2454          height = eglHeight;
2455       #else
2456          glXMakeCurrent(xGlobalDisplay, (GLXDrawable)display.window, oglDisplay.glContext);
2457       #endif
2458 #endif
2459       }
2460       else
2461 #endif
2462          result = true;
2463       if(!result && display.alphaBlend)
2464       {
2465          printf("Alpha blending windows not supported on this display\n");
2466       }
2467       if(!result)
2468          return false;
2469
2470       result = false;
2471
2472       glViewport(0,0,width,height);
2473       glLoadIdentity();
2474       glOrtho(0,width,height,0,0.0,1.0);
2475       displayWidth = display.width = width;
2476       displayHeight = display.height = height;
2477
2478       if(!oglDisplay.flippingBuffer || oglDisplay.flipBufW < width || oglDisplay.flipBufH < height)
2479       {
2480          oglDisplay.flipBufW = width;
2481          oglDisplay.flipBufH = height;
2482 #ifdef _GLES
2483          result = true;
2484 #else
2485          oglDisplay.flippingBuffer = renew oglDisplay.flippingBuffer ColorAlpha [width * height];
2486 #endif
2487       }
2488       if(oglDisplay.flippingBuffer || !width || !height)
2489          result = true;
2490
2491       return result;
2492    }
2493
2494    void DisplayPosition(Display display, int x, int y)
2495    {
2496       OGLDisplay oglDisplay = display.driverData;
2497
2498       oglDisplay.x = x;
2499       oglDisplay.y = y;
2500    }
2501
2502    void SetPalette(Display display, ColorAlpha * palette, bool colorMatch)
2503    {
2504    }
2505
2506    void RestorePalette(Display display)
2507    {
2508    }
2509
2510    void StartUpdate(Display display)
2511    {
2512    }
2513
2514    void EndUpdate(Display display)
2515    {
2516    }
2517
2518    void Scroll(Display display, Box scroll, int x, int y, Extent dirty)
2519    {
2520    }
2521
2522    void Update(Display display, Box updateBox)
2523    {
2524 #if defined(__WIN32__) || defined(USEPBUFFER)
2525       OGLDisplay oglDisplay = display.driverData;
2526 #endif
2527       //Logf("DisplayScreen\n");
2528
2529       glFlush();
2530       glFinish();
2531 #if defined(__WIN32__) || defined(USEPBUFFER)
2532       if(display.alphaBlend)
2533       {
2534          glPixelStorei(GL_PACK_ALIGNMENT, 4);
2535          glPixelStorei(GL_PACK_ROW_LENGTH, oglDisplay.stride);
2536          glPixelStorei(GL_PACK_SKIP_ROWS, 0);
2537          glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
2538          glReadPixels(0,0,display.width,display.height,GL_BGRA_EXT,GL_UNSIGNED_BYTE, oglDisplay.picture);
2539
2540          {
2541 #if defined(__WIN32__)
2542             HDC hdc = GetDC(0);
2543             POINT point = { oglDisplay.x, oglDisplay.y};
2544             POINT srcPoint = { 0, 0 };
2545             BLENDFUNCTION blend = { 0 };
2546             SIZE size;
2547             size.cx = display.width;
2548             size.cy = display.height;
2549             blend.BlendOp = AC_SRC_OVER;
2550             blend.BlendFlags = 0;
2551             blend.SourceConstantAlpha = 255;
2552             blend.AlphaFormat = AC_SRC_ALPHA;
2553
2554             /*
2555             // Process partial images.  Mapping the buffer waits for
2556             // outstanding DMA transfers into the buffer to finish.
2557             glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2558             oglDisplay.pboMemory1 = (byte *)glMapBufferARB(GL_PIXEL_PACK_BUFFER_ARB, GL_READ_ONLY);
2559
2560             // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2561             // oglDisplay.pboMemory2 = (byte *)glMapBufferARB(GL_PIXEL_PACK_BUFFER_ARB,GL_READ_ONLY);
2562
2563
2564             memcpy(oglDisplay.picture, oglDisplay.pboMemory1, display.width * display.height * 4);
2565             //memcpy(oglDisplay.picture + display.width * display.height * 4 / 2, oglDisplay.pboMemory2, display.width * display.height * 4/ 2);
2566             */
2567
2568             UpdateLayeredWindow(display.window, hdc, &point, &size, oglDisplay.memDC, &srcPoint, 0, &blend, ULW_ALPHA);
2569             /*
2570
2571             // Unmap the image buffers
2572             glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2573             glUnmapBufferARB(GL_PIXEL_PACK_BUFFER_ARB);
2574
2575             // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2576             // glUnmapBufferARB(GL_PIXEL_PACK_BUFFER_ARB);
2577
2578             // Bind two different buffer objects and start the glReadPixels
2579             // asynchronously. Each call will return directly after
2580             // starting the DMA transfer.
2581             glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2582             glReadPixels(0, 0, display.width, display.height, GL_BGRA, GL_UNSIGNED_BYTE, 0);
2583
2584             // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2585             // glReadPixels(0, display.height/2, display.width, display.height/2, GL_BGRA, GL_UNSIGNED_BYTE, 0);
2586             */
2587
2588             ReleaseDC(0, hdc);
2589 #elif defined(__unix__) || defined(__APPLE__)
2590       #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
2591       #else
2592             XTransform transform =
2593             {
2594                {
2595                   { (int)(1.0f * (1<<16)), (int)(0.0f * (1<<16)),  (int)(0 * (1 << 16)) },
2596                   { (int)(0.0f),           (int)(-1.0f * (1<<16)), (int)(0 * (1<<16)) },
2597                   { (int)(0.0f * (1<<16)), (int)(0.0f * (1<<16)),  (int)(1.0f * (1<<16)) }
2598                }
2599             };
2600             XRenderSetPictureTransform(xGlobalDisplay, oglDisplay.pixmapPicture, &transform);
2601             XRenderComposite(xGlobalDisplay, PictOpSrc, oglDisplay.pixmapPicture, None, oglDisplay.shapePicture, 0, 0, 0, 0, 0, 0, display.width, display.height);
2602             XRenderComposite(xGlobalDisplay, PictOpSrc, oglDisplay.pixmapPicture, None, oglDisplay.windowPicture, 0, 0, 0, 0, 0, 0, display.width, display.height);
2603             #if !defined(__APPLE__) && !defined(__OLDX__)
2604             XShapeCombineMask(xGlobalDisplay, (X11Window)display.window, ShapeInput, 0, 0, oglDisplay.shapePixmap, ShapeSet);
2605             #else
2606             XShapeCombineMask(xGlobalDisplay, display.window, 2, 0, 0, oglDisplay.shapePixmap, ShapeSet);
2607             #endif
2608             XFlush(xGlobalDisplay);
2609      #endif
2610 #endif
2611          }
2612       }
2613       else
2614 #endif
2615       {
2616 #if defined(__WIN32__)
2617          //wglSwapLayerBuffers(oglDisplay.hdc,WGL_SWAP_MAIN_PLANE);
2618          SwapBuffers(oglDisplay.hdc);
2619 #elif defined(__unix__) || defined(__APPLE__)
2620       #if defined(__ANDROID__) || defined(__ODROID__)
2621          eglSwapBuffers(eglDisplay, eglSurface);
2622       #elif defined(__EMSCRIPTEN__)
2623          glfwSwapBuffers();
2624       #else
2625          glXSwapBuffers(xGlobalDisplay, (GLXDrawable)display.window);
2626       #endif
2627 #endif
2628       }
2629       //Logf("Out of DisplayScreen\n");
2630    }
2631
2632    void FreeBitmap(DisplaySystem displaySystem, Bitmap bitmap)
2633    {
2634       if(bitmap.driverData)
2635       {
2636          GLuint tex = (GLuint)(uintptr)bitmap.driverData;
2637          glDeleteTextures(1, &tex);
2638          bitmap.driverData = 0;
2639       }
2640       bitmap.driver = ((subclass(DisplayDriver))class(LFBDisplayDriver));
2641    }
2642
2643    bool AllocateBitmap(DisplaySystem displaySystem, Bitmap bitmap, int width, int height, int stride, PixelFormat format, bool allocatePalette)
2644    {
2645       OGLSystem oglSystem = displaySystem.driverData;
2646       bool result = false;
2647       Bitmap mipMap { };
2648       GLuint glBitmap = 0;
2649
2650       uint w = width, h = height;
2651       if(oglSystem.pow2textures)
2652       {
2653          w = pow2i(w);
2654          h = pow2i(h);
2655       }
2656       w = Min(w, oglSystem.maxTextureSize);
2657       h = Min(h, oglSystem.maxTextureSize);
2658
2659       glGenTextures(1, &glBitmap);
2660       glBindTexture(GL_TEXTURE_2D, glBitmap);
2661
2662       glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
2663
2664       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
2665       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
2666
2667       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
2668       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
2669
2670       glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
2671
2672       mipMap.Allocate(null, w, h, w, pixelFormatRGBA, false);
2673
2674       // glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2675       glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2676
2677       delete mipMap;
2678
2679       bitmap.driverData = (void *)(uintptr)glBitmap;
2680       bitmap.driver = displaySystem.driver;
2681       bitmap.width = w;
2682       bitmap.height = h;
2683
2684       result = true;
2685       return result;
2686    }
2687
2688    bool MakeDDBitmap(DisplaySystem displaySystem, Bitmap bitmap, bool mipMaps)
2689    {
2690       bool result = false;
2691       OGLSystem oglSystem = displaySystem.driverData;
2692       Bitmap convBitmap = bitmap;
2693       if(bitmap.keepData)
2694       {
2695          convBitmap = { };
2696          convBitmap.Copy(bitmap);
2697       }
2698
2699       // Pre process the bitmap... First make it 32 bit
2700       if(/*bitmap.pixelFormat == pixelFormatRGBA || */convBitmap.Convert(null, pixelFormat888, null))
2701       {
2702          int c, level;
2703          uint w = bitmap.width, h = bitmap.height;
2704          GLuint glBitmap = 0;
2705          if(oglSystem.pow2textures)
2706          {
2707             w = pow2i(w);
2708             h = pow2i(h);
2709          }
2710          w = Min(w, oglSystem.maxTextureSize);
2711          h = Min(h, oglSystem.maxTextureSize);
2712
2713          if(mipMaps)
2714          {
2715             while(w * 2 < h) w *= 2;
2716             while(h * 2 < w) h *= 2;
2717          }
2718
2719          // Switch ARGB to RGBA
2720          //if(bitmap.format != pixelFormatRGBA)
2721          {
2722             for(c=0; c<bitmap.size; c++)
2723             {
2724                // ((ColorRGBA *)bitmap.picture)[c] = ((ColorAlpha *)bitmap.picture)[c];
2725                // TODO:
2726                ColorAlpha color = ((ColorAlpha *)convBitmap.picture)[c];
2727                ((ColorRGBA *)convBitmap.picture)[c] = ColorRGBA { color.color.r, color.color.g, color.color.b, color.a };
2728             }
2729          }
2730          // convBitmap.pixelFormat = pixelFormat888;
2731
2732          glGetError();
2733          glGenTextures(1, &glBitmap);
2734          if(glBitmap == 0)
2735          {
2736             //int error = glGetError();
2737             return false;
2738          }
2739
2740          glBindTexture(GL_TEXTURE_2D, glBitmap);
2741          glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
2742
2743          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
2744          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, mipMaps ? GL_LINEAR_MIPMAP_LINEAR : GL_LINEAR);
2745          //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
2746
2747          //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
2748          //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
2749
2750          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
2751          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
2752
2753          glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
2754
2755          result = true;
2756
2757          for(level = 0; result && (w > 1 || h > 1); level++, w >>= 1, h >>= 1)
2758          {
2759             Bitmap mipMap;
2760             if(bitmap.width != w || bitmap.height != h)
2761             {
2762                mipMap = Bitmap { };
2763                if(mipMap.Allocate(null, w, h, w, convBitmap.pixelFormat, false))
2764                {
2765                   Surface mipSurface = mipMap.GetSurface(0,0,null);
2766                   mipSurface.Filter(convBitmap, 0,0,0,0, w, h, convBitmap.width, convBitmap.height);
2767                   delete mipSurface;
2768                }
2769                else
2770                {
2771                   result = false;
2772                   delete mipMap;
2773                }
2774             }
2775             else
2776                mipMap = convBitmap;
2777
2778             if(result)
2779             {
2780                int error;
2781                //int width = 0;
2782                glGetError();
2783                // glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA8, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2784                glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2785                //printf("Calling glTexImage2D\n");
2786                //glGetTexLevelParameteriv(GL_TEXTURE_2D, level, GL_TEXTURE_WIDTH, &width);
2787                //printf("width = %d (Should be %d, %d)\n", width, w, h);
2788                if((error = glGetError()))
2789                {
2790                   //Logf("OpenGL Bitmap MakeDD error: %d...\n", error);
2791                   //printf("OpenGL Bitmap MakeDD error: %d...\n", error);
2792                   result = false;
2793                }
2794             }
2795             if(mipMap != convBitmap)
2796                delete mipMap;
2797             if(!mipMaps) break;
2798          }
2799
2800          convBitmap.driver.FreeBitmap(convBitmap.displaySystem, convBitmap);
2801          bitmap.driverData = (void *)(uintptr)glBitmap;
2802          bitmap.driver = displaySystem.driver;
2803          if(bitmap.keepData)
2804             delete convBitmap;
2805
2806          if(!result)
2807             FreeBitmap(displaySystem, bitmap);
2808          else if(oglSystem.loadingFont)
2809          {
2810             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
2811             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
2812             oglSystem.loadingFont = false;
2813          }
2814       }
2815       return result;
2816    }
2817
2818    void ReleaseSurface(Display display, Surface surface)
2819    {
2820       glDisable(GL_SCISSOR_TEST);
2821       delete surface.driverData;
2822       surface.driverData = null;
2823    }
2824
2825    bool GetBitmapSurface(DisplaySystem displaySystem, Surface surface, Bitmap bitmap, int x, int y, Box clip)
2826    {
2827       return false;
2828    }
2829
2830    bool GetSurface(Display display, Surface surface, int x,int y, Box clip)
2831    {
2832       bool result = false;
2833       OGLSurface oglSurface = surface.driverData = OGLSurface { };
2834
2835       //Logf("GetSurface\n");
2836
2837       if(oglSurface)
2838       {
2839          if(displayWidth != display.width || displayHeight != display.height)
2840          {
2841             displayWidth = display.width;
2842             displayHeight = display.height;
2843
2844             glViewport(0,0,display.width,display.height);
2845             glLoadIdentity();
2846             glOrtho(0,display.width,display.height,0,0.0,1.0);
2847          }
2848
2849          surface.offset.x = x;
2850          surface.offset.y = y;
2851          surface.unclippedBox = surface.box = clip;
2852          oglSurface.bitmapMult[0] = 1;
2853          oglSurface.bitmapMult[1] = 1;
2854          oglSurface.bitmapMult[2] = 1;
2855          oglSurface.bitmapMult[3] = 1;
2856
2857          glEnable(GL_SCISSOR_TEST);
2858          glScissor(
2859             x+clip.left,
2860             (display.height) -(y+clip.bottom)-1,
2861             clip.right-clip.left+1,
2862             clip.bottom-clip.top+1);
2863          result = true;
2864       }
2865       return result;
2866    }
2867
2868    void Clip(Display display, Surface surface, Box clip)
2869    {
2870       Box box;
2871
2872       //Logf("Clip\n");
2873
2874       if(clip != null)
2875       {
2876          box = clip;
2877          box.Clip(surface.unclippedBox);
2878          surface.box = box;
2879       }
2880       else
2881          box = surface.box = surface.unclippedBox;
2882       box.left += surface.offset.x;
2883       box.top  += surface.offset.y;
2884       box.right+= surface.offset.x;
2885       box.bottom += surface.offset.y;
2886
2887       glScissor(
2888          box.left,display.height - box.bottom - 1,
2889          box.right-box.left+1, box.bottom-box.top+1);
2890    }
2891
2892    bool GrabScreen(Display display, Bitmap bitmap, int x, int y, unsigned int w, unsigned int h)
2893    {
2894       bool result = false;
2895       OGLDisplay oglDisplay = display.driverData;
2896       ColorAlpha * flippingBuffer = oglDisplay.flippingBuffer;
2897
2898       if(oglDisplay.flippingBuffer)
2899       {
2900          if(bitmap.pixelFormat != pixelFormat888 || bitmap.width < w || bitmap.height < h)
2901          {
2902             bitmap.Free();
2903             bitmap.Allocate(null, w,h,w, pixelFormat888, false);
2904          }
2905          if(bitmap)
2906          {
2907             uint row;
2908
2909             glPixelStorei(GL_PACK_ALIGNMENT, 4);
2910             glPixelStorei(GL_PACK_ROW_LENGTH, bitmap.stride);
2911             glPixelStorei(GL_PACK_SKIP_ROWS, 0);
2912             glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
2913             glReadPixels(x,display.height-h-y,w,h,GL_BGRA_EXT,GL_UNSIGNED_BYTE, flippingBuffer);
2914
2915             // Need a flip...
2916             for(row = 0; row<h; row++)
2917                CopyBytesBy4(((ColorAlpha *)bitmap.picture) + row * w, ((ColorAlpha *)flippingBuffer) + (h-row-1) * w, w);
2918             result = true;
2919          }
2920       }
2921       return result;
2922    }
2923
2924    void SetForeground(Display display, Surface surface, ColorAlpha color)
2925    {
2926       OGLSurface oglSurface = surface.driverData;
2927
2928       //Logf("SetForeground\n");
2929
2930       oglSurface.foreground[0] = color.color.r/255.0f;
2931       oglSurface.foreground[1] = color.color.g/255.0f;
2932       oglSurface.foreground[2] = color.color.b/255.0f;
2933       //oglSurface.foreground[3] = 1.0f;
2934       oglSurface.foreground[3] = color.a/255.0f;
2935
2936       //if(!oglSurface.foreground[3])printf("bug");
2937    }
2938
2939    void SetBackground(Display display, Surface surface, ColorAlpha color)
2940    {
2941       OGLSurface oglSurface = surface.driverData;
2942
2943       //Logf("SetBackground\n");
2944
2945       oglSurface.background[0] = color.color.r/255.0f;
2946       oglSurface.background[1] = color.color.g/255.0f;
2947       oglSurface.background[2] = color.color.b/255.0f;
2948       //oglSurface.background[3] = 1.0;
2949       oglSurface.background[3] = color.a/255.0f;
2950    }
2951
2952    void SetBlitTint(Display display, Surface surface, ColorAlpha color)
2953    {
2954       OGLSurface oglSurface = surface.driverData;
2955
2956       oglSurface.bitmapMult[0] = color.color.r/255.0f;
2957       oglSurface.bitmapMult[1] = color.color.g/255.0f;
2958       oglSurface.bitmapMult[2] = color.color.b/255.0f;
2959       oglSurface.bitmapMult[3] = color.a/255.0f;
2960    }
2961
2962    ColorAlpha GetPixel(Display display, Surface surface,int x,int y)
2963    {
2964       return 0;
2965    }
2966
2967    void PutPixel(Display display, Surface surface,int x,int y)
2968    {
2969       OGLSurface oglSurface = surface.driverData;
2970
2971       //Logf("PutPixel\n");
2972
2973       glColor4fv(oglSurface.foreground);
2974       glBegin(GL_POINTS);
2975       // glVertex2i(x+surface.offset.x, y+surface.offset.y);
2976       glVertex2f(x+surface.offset.x + 0.5f, y+surface.offset.y + 0.5f);
2977
2978       glEnd();
2979    }
2980
2981    void DrawLine(Display display, Surface surface, int _x1, int _y1, int _x2, int _y2)
2982    {
2983       OGLSurface oglSurface = surface.driverData;
2984       float x1 = _x1, x2 = _x2, y1 = _y1, y2 = _y2;
2985       if(_x1 == _x2)
2986       {
2987          if(_y2 >= _y1)
2988             y2 += 1;
2989          else
2990             y1 += 1;
2991       }
2992       else if(_y1 == _y2)
2993       {
2994          if(_x2 >= _x1)
2995             x2 += 1;
2996          else
2997             x1 += 1;
2998       }
2999       x1 += surface.offset.x;
3000       y1 += surface.offset.y;
3001       x2 += surface.offset.x;
3002       y2 += surface.offset.y;
3003
3004       //Logf("Line\n");
3005
3006       glColor4fv(oglSurface.foreground);
3007       glBegin(GL_LINES);
3008 #if defined(_GLES) || defined(EM_MODE)
3009       if(stippleEnabled)
3010       {
3011          glTexCoord2f(0.5f, 0);
3012          glVertex2f(x1 + 0.5f, y1 + 0.5f);
3013          glTexCoord2f(Max(x2-x1, y2-y1) + 0.5f, 0);
3014          glVertex2f(x2 + 0.5f, y2 + 0.5f);
3015       }
3016       else
3017 #endif
3018       {
3019          /*
3020          glVertex2i(x1, y1);
3021          glVertex2i(x2, y2);
3022          */
3023          glVertex2f(x1 + 0.5f, y1 + 0.5f);
3024          glVertex2f(x2 + 0.5f, y2 + 0.5f);
3025       }
3026
3027       glEnd();
3028    }
3029
3030    void Rectangle(Display display, Surface surface,int x1,int y1,int x2,int y2)
3031    {
3032       OGLSurface oglSurface = surface.driverData;
3033       x1 += surface.offset.x;
3034       y1 += surface.offset.y;
3035       x2 += surface.offset.x;
3036       y2 += surface.offset.y;
3037
3038       //Logf("Rectangle\n");
3039
3040       glColor4fv(oglSurface.foreground);
3041 #if defined(_GLES) || defined(EM_MODE)
3042       if(stippleEnabled)
3043       {
3044          glBegin(GL_LINES);
3045
3046          glTexCoord2f(0.5f, 0);
3047          glVertex2f(x1 + 0.5f, y1 + 0.5f);
3048          glTexCoord2f(y2-y1 + 0.5f, 0);
3049          glVertex2f(x1 + 0.5f, y2 + 0.5f);
3050
3051          glTexCoord2f(0.5f, 0);
3052          glVertex2f(x1 + 0.5f, y2 + 0.5f);
3053          glTexCoord2f(x2 - x1 + 0.5f, 0);
3054          glVertex2f(x2 + 0.5f, y2 + 0.5f);
3055
3056          glTexCoord2f(0.5f, 0);
3057          glVertex2f(x2 + 0.5f, y2 + 0.5f);
3058          glTexCoord2f(y1 - y2 + 0.5f, 0);
3059          glVertex2f(x2 + 0.5f, y1 + 0.5f);
3060
3061          glTexCoord2f(0.5f, 0);
3062          glVertex2f(x2 + 0.5f, y1 + 0.5f);
3063          glTexCoord2f(x1 - x2 + 0.5f, 0);
3064          glVertex2f(x1 + 0.5f, y1 + 0.5f);
3065       }
3066       else
3067 #endif
3068       {
3069          glBegin(GL_LINE_LOOP);
3070          /*
3071          glVertex2i(x1, y1);
3072          glVertex2i(x1, y2);
3073          glVertex2i(x2, y2);
3074          glVertex2i(x2, y1);
3075          */
3076          glVertex2f(x1 + 0.5f, y1 + 0.5f);
3077          glVertex2f(x1 + 0.5f, y2 + 0.5f);
3078          glVertex2f(x2 + 0.5f, y2 + 0.5f);
3079          glVertex2f(x2 + 0.5f, y1 + 0.5f);
3080       }
3081       glEnd();
3082    }
3083
3084    void Area(Display display, Surface surface,int x1,int y1,int x2,int y2)
3085    {
3086       OGLSurface oglSurface = surface.driverData;
3087       //Logf("Area\n");
3088
3089       glColor4fv(oglSurface.background);
3090
3091 #ifdef EM_MODE
3092       glBegin(GL_QUADS);
3093       glVertex2f(x1+surface.offset.x, y1+surface.offset.y);
3094       glVertex2f(x1+surface.offset.x, y2+surface.offset.y+1);
3095       glVertex2f(x2+surface.offset.x+1, y2+surface.offset.y+1);
3096       glVertex2f(x2+surface.offset.x+1, y1+surface.offset.y);
3097       glEnd();
3098 #else
3099       glRecti(x1+surface.offset.x, y1+surface.offset.y,
3100               x2+surface.offset.x + 1, y2+surface.offset.y + 1);
3101 #endif
3102       /*
3103       glRectf(x1+surface.offset.x, y1+surface.offset.y,
3104               x2+surface.offset.x + 1, y2+surface.offset.y + 1);
3105       */
3106    }
3107
3108    void Clear(Display display, Surface surface, ClearType type)
3109    {
3110       OGLDisplay oglDisplay = display.driverData;
3111       OGLSurface oglSurface = surface.driverData;
3112
3113       //Logf("Clear\n");
3114       if(type != depthBuffer)
3115          glClearColor(oglSurface.background[0], oglSurface.background[1], oglSurface.background[2], oglSurface.background[3]);
3116       if(type != colorBuffer && !oglDisplay.depthWrite)
3117       {
3118          glDepthMask((byte)bool::true);
3119       }
3120       glClear(((type != depthBuffer) ? GL_COLOR_BUFFER_BIT : 0) |
3121               ((type != colorBuffer) ? GL_DEPTH_BUFFER_BIT : 0));
3122       if(type != colorBuffer && !oglDisplay.depthWrite)
3123       {
3124          glDepthMask((byte)bool::false);
3125       }
3126    }
3127
3128    bool ConvertBitmap(DisplaySystem displaySystem, Bitmap bitmap, PixelFormat format, ColorAlpha * palette)
3129    {
3130       return true;
3131    }
3132
3133    void Blit(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h)
3134    {
3135       OGLSurface oglSurface = surface.driverData;
3136
3137 #if !defined(__OLDX__)
3138          // WHY DO WE HAVE GL_ONE HERE ?
3139          /*if(glBlendFuncSeparate && !oglSurface.writingText)
3140             glBlendFuncSeparate(GL_ONE, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
3141 #endif
3142
3143       if(!oglSurface.writingText)
3144       {
3145          // glTranslatef(-0.375f, -0.375f, 0.0f);
3146          glEnable(GL_TEXTURE_2D);
3147          glColor4fv(oglSurface.bitmapMult);
3148       }
3149       else if(oglSurface.xOffset)
3150          glTranslated(oglSurface.xOffset / 64.0/*-0.375*/, 0.0, 0.0);
3151
3152       glBindTexture(GL_TEXTURE_2D, (GLuint)(uintptr)bitmap.driverData);
3153       glBegin(GL_QUADS);
3154
3155       if(h < 0)
3156       {
3157          glTexCoord2f((float)sx/ bitmap.width, (float)(sy-h)/ bitmap.height);
3158          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
3159          glTexCoord2f((float)(sx+w) / bitmap.width, (float)(sy-h)/ bitmap.height);
3160          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
3161          glTexCoord2f((float)(sx+w)/ bitmap.width, (float)sy/ bitmap.height);
3162          glVertex2i(dx+w+surface.offset.x, dy-h+surface.offset.y);
3163          glTexCoord2f((float)sx / bitmap.width, (float)sy/ bitmap.height);
3164          glVertex2i(dx+surface.offset.x, dy-h+surface.offset.y);
3165       }
3166       else
3167       {
3168          /*
3169          glTexCoord2f((float)sx / bitmap.width, (float)sy/ bitmap.height);
3170          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
3171          glTexCoord2f((float)(sx+w)/ bitmap.width, (float)sy/ bitmap.height);
3172          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
3173          glTexCoord2f((float)(sx+w) / bitmap.width, (float)(sy+h)/ bitmap.height);
3174          glVertex2i(dx+w+surface.offset.x, dy+h+surface.offset.y);
3175          glTexCoord2f((float)sx/ bitmap.width, (float)(sy+h)/ bitmap.height);
3176          glVertex2i(dx+surface.offset.x, dy+h+surface.offset.y);
3177          */
3178
3179          glTexCoord2f((float)sx / bitmap.width, (float)sy/ bitmap.height);
3180          glVertex2f((float)dx+surface.offset.x, (float)dy+surface.offset.y);
3181          glTexCoord2f((float)(sx+w)/ bitmap.width, (float)sy/ bitmap.height);
3182          glVertex2f((float)dx+w+surface.offset.x, (float)dy+surface.offset.y);
3183          glTexCoord2f((float)(sx+w) / bitmap.width, (float)(sy+h)/ bitmap.height);
3184          glVertex2f((float)dx+w+surface.offset.x, (float)dy+h+surface.offset.y);
3185          glTexCoord2f((float)sx/ bitmap.width, (float)(sy+h)/ bitmap.height);
3186          glVertex2f((float)dx+surface.offset.x, (float)dy+h+surface.offset.y);
3187       }
3188       glEnd();
3189
3190       if(!oglSurface.writingText)
3191       {
3192          glDisable(GL_TEXTURE_2D);
3193
3194          //glTranslate(0.375, 0.375, 0.0);
3195       }
3196       else if(oglSurface.xOffset)
3197          glTranslated(-oglSurface.xOffset / 64.0/*+0.375*/, 0.0, 0.0);
3198
3199 #if !defined(__OLDX__)
3200          /*if(glBlendFuncSeparate && !oglSurface.writingText)
3201             glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
3202 #endif
3203    }
3204
3205    void Stretch(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
3206    {
3207       OGLSurface oglSurface = surface.driverData;
3208
3209       //glTranslate(-0.375, -0.375, 0.0);
3210
3211       //Logf("Stretch\n");
3212
3213 #if !defined(__OLDX__)
3214       /*if(glBlendFuncSeparate)
3215          glBlendFuncSeparate(GL_ONE, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
3216 #endif
3217
3218       glEnable(GL_TEXTURE_2D);
3219       glBindTexture(GL_TEXTURE_2D, (GLuint)(uintptr)bitmap.driverData);
3220
3221       glColor4fv(oglSurface.bitmapMult);
3222
3223       glBegin(GL_QUADS);
3224
3225       if(h < 0)
3226       {
3227          glTexCoord2f((float)(sx)/ bitmap.width, (float)(sy+sh)/ bitmap.height);
3228          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
3229
3230          glTexCoord2f((float)(sx+sw) / bitmap.width, (float)(sy+sh)/ bitmap.height);
3231          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
3232
3233          glTexCoord2f((float)(sx+sw)/ bitmap.width, (float)(sy)/ bitmap.height);
3234          glVertex2i(dx+w+surface.offset.x, dy-h+surface.offset.y);
3235
3236          glTexCoord2f((float)(sx) / bitmap.width, (float)(sy)/ bitmap.height);
3237          glVertex2i(dx+surface.offset.x, dy-h+surface.offset.y);
3238       }
3239       else
3240       {
3241          glTexCoord2f((float)(sx) / bitmap.width, (float)(sy)/ bitmap.height);
3242          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
3243
3244          glTexCoord2f((float)(sx+sw)/ bitmap.width, (float)(sy)/ bitmap.height);
3245          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
3246
3247          glTexCoord2f((float)(sx+sw) / bitmap.width, (float)(sy+sh)/ bitmap.height);
3248          glVertex2i(dx+w+surface.offset.x, dy+h+surface.offset.y);
3249
3250          glTexCoord2f((float)(sx)/ bitmap.width, (float)(sy+sh)/ bitmap.height);
3251          glVertex2i(dx+surface.offset.x, dy+h+surface.offset.y);
3252       }
3253
3254       glEnd();
3255
3256       glDisable(GL_TEXTURE_2D);
3257
3258       //glTranslate(0.375, 0.375, 0.0);
3259 #if !defined(__OLDX__)
3260       /*if(glBlendFuncSeparate)
3261          glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
3262 #endif
3263
3264    }
3265
3266    void Filter(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
3267    {
3268       Stretch(display, surface, bitmap, dx, dy, sx, sy, w, h, sw, sh);
3269    }
3270
3271    void StretchDI(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
3272    {
3273 #if !defined(EM_MODE)
3274       float s2dw,s2dh,d2sw,d2sh;
3275       //bool flipX = false, flipY = false;
3276
3277       //Logf("StretchDI\n");
3278
3279       if(Sgn(w) != Sgn(sw))
3280       {
3281          w = Abs(w);
3282          sw = Abs(sw);
3283          //flipX = true;
3284       }
3285       if(Sgn(h) != Sgn(sh))
3286       {
3287          h = Abs(h);
3288          sh = Abs(sh);
3289          //flipY = true;
3290       }
3291
3292       s2dw=(float)w / sw;
3293       s2dh=(float)h / sh;
3294       d2sw=(float)sw / w;
3295       d2sh=(float)sh / h;
3296
3297       //Clip against the edges of the source
3298       if(sx<0)
3299       {
3300          dx+=(int)((0-sx) * s2dw);
3301          w-=(int)((0-sx) * s2dw);
3302          sw-=0-sx;
3303          sx=0;
3304       }
3305       if(sy<0)
3306       {
3307          dy+=(int)((0-sy) * s2dh);
3308          h-=(int)((0-sy) * s2dh);
3309
3310          sh-=0-sy;
3311          sy=0;
3312       }
3313       if(sx+sw>bitmap.width-1)
3314       {
3315          w-=(int)((sx+sw-(bitmap.width-1)-1)*s2dw);
3316          sw-=sx+sw-(bitmap.width-1)-1;
3317       }
3318       if(sy+sh>(bitmap.height-1))
3319       {
3320          h-=(int)((sy+sh-(bitmap.height-1)-1)*s2dh);
3321          sh-=sy+sh-(bitmap.height-1)-1;
3322       }
3323       //Clip against the edges of the surfaceination
3324       if(dx<surface.box.left)
3325       {
3326          //if(!flip)
3327          sx+=(int)((surface.box.left-dx)*d2sw);
3328          sw-=(int)((surface.box.left-dx)*d2sw);
3329          w-=surface.box.left-dx;
3330          dx=surface.box.left;
3331       }
3332       if(dy<surface.box.top)
3333       {
3334          sy+=(int)((surface.box.top-dy)*d2sh);
3335          sh-=(int)((surface.box.top-dy)*d2sh);
3336          h-=surface.box.top-dy;
3337          dy=surface.box.top;
3338       }
3339       if(dx+w>surface.box.right)
3340       {
3341          //if(flip) sx+=(int)((dx+w-surface.box.right-1)*d2sw);
3342          sw-=(int)((dx+w-surface.box.right-1)*d2sw);
3343          w-=dx+w-surface.box.right-1;
3344       }
3345       if(dy+h>surface.box.bottom)
3346       {
3347          sh-=(int)((dy+h-surface.box.bottom-1)*d2sh);
3348          h-=dy+h-surface.box.bottom-1;
3349       }
3350       if((w<=0)||(h<=0)||(sw<=0)||(sh<=0)) return;
3351
3352       dx += surface.offset.x;
3353       dy += surface.offset.y;
3354
3355       if(bitmap.pixelFormat == pixelFormat888 && !bitmap.paletteShades)
3356       {
3357          glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
3358          glPixelStorei(GL_UNPACK_ROW_LENGTH, bitmap.stride);
3359          glPixelStorei(GL_UNPACK_SKIP_PIXELS, sx);
3360          glPixelStorei(GL_UNPACK_SKIP_ROWS, sy);
3361          glRasterPos2d(dx,dy);
3362          //glPixelZoom(flipX ? -s2dw : s2dw, flipY ? s2dh : -s2dh);
3363          glPixelZoom(s2dw, -s2dh);
3364          glDrawPixels(sw,sh,GL_BGRA_EXT,GL_UNSIGNED_BYTE, bitmap.picture);
3365          glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
3366          glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
3367          glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
3368          glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
3369       }
3370 #endif
3371    }
3372
3373    void BlitDI(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h)
3374    {
3375 #if !defined(EM_MODE)
3376       //Logf("BlitDI\n");
3377
3378       //Clip against the edges of the source
3379       if(sx<0)
3380       {
3381          dx+=-sx;
3382          w-=-sx;
3383          sx=0;
3384       }
3385       if(sy<0)
3386       {
3387          dy+=0-sy;
3388          h-=0-sy;
3389          sy=0;
3390       }
3391       if(sx+w>bitmap.width-1)
3392          w-=sx+w-(bitmap.width-1)-1;
3393       if(sy+h>bitmap.height-1)
3394          h-=sy+h-(bitmap.height-1)-1;
3395       //Clip against the edges of the surfaceination
3396       if(dx<surface.box.left)
3397       {
3398          //if(!flip)
3399          sx+=surface.box.left-dx;
3400          w-=surface.box.left-dx;
3401          dx=surface.box.left;
3402       }
3403       if(dy<surface.box.top)
3404       {
3405          sy+=surface.box.top-dy;
3406          h-=surface.box.top-dy;
3407          dy=surface.box.top;
3408       }
3409       if(dx+w>surface.box.right)
3410       {
3411          //if(flip) sx+=dx+w-surface.box.right-1;
3412          w-=dx+w-surface.box.right-1;
3413       }
3414       if(dy+h>surface.box.bottom)
3415          h-=dy+h-surface.box.bottom-1;
3416       if((w<=0)||(h<=0))
3417          return;
3418
3419       dx += surface.offset.x;
3420       dy += surface.offset.y;
3421
3422       if(bitmap.pixelFormat == pixelFormat888 && !bitmap.paletteShades)
3423       {
3424          glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
3425          glPixelStorei(GL_UNPACK_ROW_LENGTH, bitmap.stride);
3426          glPixelStorei(GL_UNPACK_SKIP_PIXELS, sx);
3427          glPixelStorei(GL_UNPACK_SKIP_ROWS, sy);
3428          glRasterPos2d(dx,dy);
3429          glPixelZoom(1,-1);
3430          glDrawPixels(w,h,GL_BGRA_EXT,GL_UNSIGNED_BYTE, bitmap.picture);
3431          glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
3432          glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
3433          glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
3434          glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
3435       }
3436 #endif
3437    }
3438
3439    void FilterDI(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
3440    {
3441       StretchDI(display, surface, bitmap, dx, dy, sx, sy, w, h, sw, sh);
3442    }
3443
3444    void UnloadFont(DisplaySystem displaySystem, Font font)
3445    {
3446       ((subclass(DisplayDriver))class(LFBDisplayDriver)).UnloadFont(displaySystem, font);
3447    }
3448
3449    Font LoadFont(DisplaySystem displaySystem, const char * faceName, float size, FontFlags flags)
3450    {
3451       Font font;
3452       OGLSystem oglSystem = displaySystem.driverData;
3453       oglSystem.loadingFont = true;
3454       font = ((subclass(DisplayDriver))class(LFBDisplayDriver)).LoadFont(displaySystem, faceName, size, flags);
3455       return font;
3456    }
3457
3458    void FontExtent(DisplaySystem displaySystem, Font font, const char * text, int len, int * width, int * height)
3459    {
3460       ((subclass(DisplayDriver))class(LFBDisplayDriver)).FontExtent(displaySystem, font, text, len, width, height);
3461    }
3462
3463    void WriteText(Display display, Surface surface, int x, int y, const char * text, int len)
3464    {
3465       OGLSurface oglSurface = surface.driverData;
3466       OGLSystem oglSystem = display.displaySystem.driverData;
3467       oglSystem.loadingFont = true;
3468
3469       //glTranslated(-0.375, -0.375, 0.0);
3470
3471       //Logf("Blit\n");
3472
3473       if(surface.textOpacity)
3474       {
3475          int w, h;
3476          FontExtent(display.displaySystem, surface.font, text, len, &w, &h);
3477          display.displaySystem.driver.Area(display, surface,x,y,x+w-1,y+h-1);
3478       }
3479
3480       oglSurface.writingText = true;
3481
3482       glEnable(GL_TEXTURE_2D);
3483
3484       if(surface.outline.size)
3485       {
3486          ColorAlpha outlineColor = surface.outline.color;
3487          glColor4ub(outlineColor.color.r, outlineColor.color.g, outlineColor.color.b, outlineColor.a);
3488          //glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
3489          //glEnable(GL_BLEND);
3490
3491          oglSurface.writingOutline = true;
3492          ((subclass(DisplayDriver))class(LFBDisplayDriver)).WriteText(display, surface, x, y, text, len);
3493          oglSurface.writingOutline = false;
3494       }
3495       glColor4fv(oglSurface.foreground);
3496
3497       ((subclass(DisplayDriver))class(LFBDisplayDriver)).WriteText(display, surface, x, y, text, len);
3498       oglSurface.writingText = false;
3499       oglSystem.loadingFont = false;
3500
3501       glDisable(GL_TEXTURE_2D);
3502
3503       //glTranslated(0.375, 0.375, 0.0);
3504    }
3505
3506    void TextFont(Display display, Surface surface, Font font)
3507    {
3508       ((subclass(DisplayDriver))class(LFBDisplayDriver)).TextFont(display, surface, font);
3509    }
3510
3511    void TextOpacity(Display display, Surface surface, bool opaque)
3512    {
3513       OGLSurface oglSurface = surface.driverData;
3514       oglSurface.opaqueText = opaque;
3515    }
3516
3517    void TextExtent(Display display, Surface surface, const char * text, int len, int * width, int * height)
3518    {
3519       OGLSurface oglSurface = surface.driverData;
3520       OGLSystem oglSystem = display.displaySystem.driverData;
3521       oglSystem.loadingFont = true;
3522       FontExtent(display.displaySystem, oglSurface.font, text, len, width, height);
3523       oglSystem.loadingFont = false;
3524    }
3525
3526    void DrawingChar(Display display, Surface surface, char character)
3527    {
3528
3529    }
3530
3531    void LineStipple(Display display, Surface surface, uint32 stipple)
3532    {
3533       //Logf("Stipple\n");
3534
3535       if(stipple)
3536       {
3537 #if defined(_GLES) || defined(EM_MODE)
3538          stippleEnabled = true;
3539          glesLineStipple(1, (uint16)stipple);
3540 #else
3541          glLineStipple(1, (uint16)stipple);
3542          glEnable(GL_LINE_STIPPLE);
3543 #endif
3544       }
3545       else
3546       {
3547 #if defined(_GLES) || defined(EM_MODE)
3548          stippleEnabled = false;
3549          glMatrixMode(GL_TEXTURE);
3550          glLoadIdentity();
3551          glMatrixMode(GL_PROJECTION);
3552          glDisable(GL_TEXTURE_2D);
3553 #else
3554          glDisable(GL_LINE_STIPPLE);
3555 #endif
3556       }
3557    }
3558 #if !defined(ECERE_NO3D) && !defined(ECERE_VANILLA)
3559    void SetRenderState(Display display, RenderState state, uint value)
3560    {
3561       OGLDisplay oglDisplay = display.driverData;
3562       //Logf("RenderState\n");
3563
3564       switch(state)
3565       {
3566          case antiAlias:
3567             if(value)
3568                glEnable(GL_MULTISAMPLE_ARB);
3569             else
3570                glDisable(GL_MULTISAMPLE_ARB);
3571             break;
3572          case fillMode:
3573 #if !defined(_GLES)
3574             glPolygonMode(GL_FRONT_AND_BACK, ((FillModeValue)value == solid) ? GL_FILL : GL_LINE);
3575 #endif
3576             break;
3577          case depthTest:
3578             if(value) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
3579             break;
3580          case depthWrite:
3581             if(value) glDepthMask((byte)bool::true); else glDepthMask((byte)bool::false);
3582             oglDisplay.depthWrite = (bool)value;
3583             break;
3584          case fogColor:
3585          {
3586             float color[4] = { ((Color)value).r/255.0f, ((Color)value).g/255.0f, ((Color)value).b/255.0f, 1.0f };
3587             glFogfv(GL_FOG_COLOR, (float *)&color);
3588             break;
3589          }
3590          case fogDensity:
3591             glFogf(GL_FOG_DENSITY, (float)(RenderStateFloat { ui = value }.f * nearPlane));
3592             break;
3593          case blend:
3594             if(value) glEnable(GL_BLEND); else glDisable(GL_BLEND);
3595             break;
3596          case ambient:
3597          {
3598 #if !defined(EM_MODE)
3599             float ambient[4] = { ((Color)value).r/255.0f, ((Color)value).g/255.0f, ((Color)value).b/255.0f, 1.0f };
3600             glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambient);
3601 #endif
3602             break;
3603          }
3604          case alphaWrite:
3605          {
3606             if(value) glColorMask(1,1,1,1); else glColorMask(1,1,1,0);
3607             break;
3608          }
3609          case vSync:
3610          {
3611 #if defined(__WIN32__)
3612             wglSwapIntervalEXT(value ? 1 : 0);
3613 #endif
3614             break;
3615          }
3616       }
3617    }
3618
3619    void SetLight(Display display, int id, Light light)
3620    {
3621 #if !defined(EM_MODE)
3622       //Logf("SetLight\n");
3623
3624       if(light != null)
3625       {
3626          Object lightObject = light.lightObject;
3627          float position[4] = { 0, 0, 0, 0 };
3628          float color[4] = { 0, 0, 0, 1 };
3629
3630          glEnable(GL_LIGHT0 + id);
3631          /*
3632          glLightfv(GL_LIGHT0 + id, GL_DIFFUSE, (float *)&light.diffuse);
3633          glLightfv(GL_LIGHT0 + id, GL_AMBIENT, (float *)&light.ambient);
3634          glLightfv(GL_LIGHT0 + id, GL_SPECULAR,(float *)&light.specular);
3635          */
3636
3637          if(!light.multiplier) light.multiplier = 1.0f;
3638
3639          color[0] = light.diffuse.r * light.multiplier;
3640          color[1] = light.diffuse.g * light.multiplier;
3641          color[2] = light.diffuse.b * light.multiplier;
3642          glLightfv(GL_LIGHT0 + id, GL_DIFFUSE, color);
3643
3644          color[0] = light.ambient.r * light.multiplier;
3645          color[1] = light.ambient.g * light.multiplier;
3646          color[2] = light.ambient.b * light.multiplier;
3647          glLightfv(GL_LIGHT0 + id, GL_AMBIENT, color);
3648          color[0] = light.specular.r * light.multiplier;
3649          color[1] = light.specular.g * light.multiplier;
3650          color[2] = light.specular.b * light.multiplier;
3651          glLightfv(GL_LIGHT0 + id, GL_SPECULAR,color);
3652
3653          if(lightObject)
3654          {
3655             Vector3D positionVector;
3656             if(light.flags.spot)
3657             {
3658                if(lightObject.flags.root || !lightObject.parent)
3659                {
3660                   positionVector = lightObject.transform.position;
3661                   positionVector.Subtract(positionVector, display.display3D.camera.cPosition);
3662                }
3663                else
3664                {
3665                   positionVector.MultMatrix(lightObject.transform.position, lightObject.parent.matrix);
3666                   if(display.display3D.camera)
3667                      positionVector.Subtract(positionVector, display.display3D.camera.cPosition);
3668                }
3669                position[3] = 1;
3670             }
3671             else
3672             {
3673                if(!light.direction.x && !light.direction.y && !light.direction.z)
3674                {
3675                   Vector3Df vector { 0,0,-1 };
3676                   Matrix mat;
3677                   mat.RotationQuaternion(light.orientation);
3678                   positionVector.MultMatrixf(vector, mat);
3679                }
3680                else
3681                {
3682                   positionVector = light.direction;
3683                   position[3] = 1;
3684                }
3685             }
3686
3687             position[0] = (float)positionVector.x;
3688             position[1] = (float)positionVector.y;
3689             position[2] = (float)positionVector.z;
3690
3691             glLightfv(GL_LIGHT0 + id, GL_POSITION, position);
3692
3693             /*
3694             // Display Light Position
3695             glDisable(GL_LIGHTING);
3696             glDisable(GL_DEPTH_TEST);
3697             glColor3f(1,1,1);
3698             glPointSize(10);
3699             glBegin(GL_POINTS);
3700             glVertex3fv(position);
3701             glEnd();
3702             glEnable(GL_DEPTH_TEST);
3703             glEnable(GL_LIGHTING);
3704
3705
3706             // Display Target
3707             if(lightObject.flags.root || !lightObject.parent)
3708             {
3709                positionVector = light.target.transform.position;
3710                positionVector.Subtract(positionVector, display.camera.cPosition);
3711             }
3712             else
3713             {
3714                positionVector.MultMatrix(light.target.transform.position,
3715                   lightObject.light.target.parent.matrix);
3716                positionVector.Subtract(positionVector, display.camera.cPosition);
3717             }
3718
3719             position[0] = positionVector.x;
3720             position[1] = positionVector.y;
3721             position[2] = positionVector.z;
3722
3723             glDisable(GL_LIGHTING);
3724             glDisable(GL_DEPTH_TEST);
3725             glColor3f(1,1,0);
3726             glPointSize(10);
3727             glBegin(GL_POINTS);
3728             glVertex3fv(position);
3729             glEnd();
3730             glEnable(GL_DEPTH_TEST);
3731             glEnable(GL_LIGHTING);
3732             */
3733
3734             if(light.flags.attenuation)
3735             {
3736                glLightf(GL_LIGHT0 + id, GL_CONSTANT_ATTENUATION, light.Kc);
3737                glLightf(GL_LIGHT0 + id, GL_LINEAR_ATTENUATION, light.Kl);
3738                glLightf(GL_LIGHT0 + id, GL_QUADRATIC_ATTENUATION, light.Kq);
3739             }
3740
3741             if(light.flags.spot)
3742             {
3743                float exponent = 0;
3744                #define MAXLIGHT  0.9
3745                float direction[4] = { (float)light.direction.x, (float)light.direction.y, (float)light.direction.z, 1 };
3746                // Figure out exponent out of the hot spot
3747                exponent = (float)(log(MAXLIGHT) / log(cos((light.hotSpot / 2))));
3748
3749                glLightfv(GL_LIGHT0 + id, GL_SPOT_DIRECTION, direction);
3750                glLightf(GL_LIGHT0 + id, GL_SPOT_CUTOFF, (float)(light.fallOff / 2));
3751                glLightf(GL_LIGHT0 + id, GL_SPOT_EXPONENT, exponent);
3752             }
3753          }
3754          else
3755          {
3756
3757             Vector3Df vector { 0,0,-1 };
3758             Vector3Df direction;
3759             Matrix mat;
3760
3761             mat.RotationQuaternion(light.orientation);
3762             direction.MultMatrix(vector, mat);
3763
3764             position[0] = direction.x;
3765             position[1] = direction.y;
3766             position[2] = direction.z;
3767
3768             glLightfv(GL_LIGHT0 + id, GL_POSITION, position);
3769          }
3770       }
3771       else
3772          glDisable(GL_LIGHT0 + id);
3773 #endif
3774    }
3775
3776    void SetCamera(Display display, Surface surface, Camera camera)
3777    {
3778       OGLDisplay oglDisplay = display.driverData;
3779       //Logf("SetCamera\n");
3780
3781       if(camera)
3782       {
3783          int left = surface.box.left + surface.offset.x;
3784          int top = surface.box.top  + surface.offset.y;
3785          int right = surface.box.right + surface.offset.x;
3786          int bottom = surface.box.bottom + surface.offset.y;
3787          float origX = surface.offset.x + camera.origin.x;
3788          float origY = surface.offset.y + camera.origin.y;
3789          int x = left;
3790          int y = display.height - bottom - 1;
3791          int w = right - left + 1;
3792          int h = bottom - top + 1;
3793
3794          // *** ViewPort ***
3795          glViewport(x, y, w, h);
3796
3797          // *** Projection Matrix ***
3798          if(!display.display3D.camera)
3799          {
3800             glMatrixMode(GL_PROJECTION);
3801             glPushMatrix();
3802          }
3803          else
3804             glMatrixMode(GL_PROJECTION);
3805          if(display.display3D.collectingHits)
3806          {
3807             float pickX = display.display3D.pickX + surface.offset.x;
3808             float pickY = display.height - (display.display3D.pickY + surface.offset.y) - 1;
3809             Matrix pickMatrix
3810             {
3811                {
3812                   w / display.display3D.pickWidth, 0, 0, 0,
3813                   0, h / display.display3D.pickHeight, 0, 0,
3814                   0, 0, 1, 0,
3815                   (w + 2.0f * (x - pickX)) / display.display3D.pickWidth,
3816                   (h + 2.0f * (y - pickY)) / display.display3D.pickHeight, 0, 1
3817                }
3818             };
3819             glLoadMatrixd(pickMatrix.array);
3820          }
3821          else
3822             glLoadIdentity();
3823          glFrustum(
3824             (left   - origX) * camera.zMin / camera.focalX,
3825             (right  - origX) * camera.zMin / camera.focalX,
3826             (bottom - origY) * camera.zMin / camera.focalY,
3827             (top    - origY) * camera.zMin / camera.focalY,
3828             camera.zMin, camera.zMax);
3829
3830          glDisable(GL_BLEND);
3831
3832          // *** Z Inverted Identity Matrix ***
3833          glMatrixMode(GL_MODELVIEW);
3834          if(!display.display3D.camera)
3835             glPushMatrix();
3836
3837          glLoadIdentity();
3838
3839          glScaled(1.0/nearPlane, 1.0/nearPlane, -1.0/nearPlane);
3840
3841          // *** View Matrix ***
3842          glMultMatrixd(camera.viewMatrix.array);
3843
3844          // *** Lights ***
3845          // ...
3846
3847          glEnable(GL_DEPTH_TEST);
3848 //#if !defined(EM_MODE)
3849          glEnable(GL_LIGHTING);
3850          glShadeModel(GL_SMOOTH);
3851 //#endif
3852          glDepthMask((byte)bool::true);
3853          oglDisplay.depthWrite = true;
3854
3855          glEnable(GL_MULTISAMPLE_ARB);
3856       }
3857       else if(display.display3D.camera)
3858       {
3859          oglDisplay.depthWrite = false;
3860          glViewport(0,0,display.width,display.height);
3861
3862          glDisable(GL_CULL_FACE);
3863          glDisable(GL_DEPTH_TEST);
3864          glDisable(GL_LIGHTING);
3865          glDisable(GL_FOG);
3866          glDisable(GL_TEXTURE_2D);
3867 //#if !defined(EM_MODE)
3868          glShadeModel(GL_FLAT);
3869 //#endif
3870          glEnable(GL_BLEND);
3871          glDisable(GL_MULTISAMPLE_ARB);
3872
3873          // *** Restore 2D MODELVIEW Matrix ***
3874          glPopMatrix();
3875
3876          // *** Restore 2D PROJECTION Matrix ***
3877          glMatrixMode(GL_PROJECTION);
3878          glPopMatrix();
3879       }
3880
3881    }
3882
3883    void ApplyMaterial(Display display, Material material, Mesh mesh)
3884    {
3885       //Logf("ApplyMaterial\n");
3886
3887       // Basic Properties
3888       if(material.flags.doubleSided)
3889       {
3890 #if !defined(EM_MODE)
3891          glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, !material.flags.singleSideLight);
3892 #endif
3893          glDisable(GL_CULL_FACE);
3894       }
3895       else
3896       {
3897 #if !defined(EM_MODE)
3898          glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, bool::false);
3899 #endif
3900          glEnable(GL_CULL_FACE);
3901       }
3902
3903       // Fog
3904       if(material.flags.noFog)
3905          glDisable(GL_FOG);
3906       else
3907          glEnable(GL_FOG);
3908
3909       // Maps
3910       if(material.baseMap && (mesh.texCoords || mesh.flags.texCoords1))
3911       {
3912          Bitmap map = material.baseMap;
3913          glEnable(GL_TEXTURE_2D);
3914          glBindTexture(GL_TEXTURE_2D, (GLuint)(uintptr)map.driverData);
3915
3916          glMatrixMode(GL_TEXTURE);
3917          glLoadIdentity();
3918          if(material.uScale && material.vScale)
3919             glScalef(material.uScale, material.vScale, 1);
3920          glMatrixMode(GL_MODELVIEW);
3921
3922          if(material.flags.tile)
3923          {
3924             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
3925             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
3926          }
3927          else
3928          {
3929             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
3930             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
3931          }
3932       }
3933       else
3934          glDisable(GL_TEXTURE_2D);
3935
3936 #ifdef EM_MODE
3937       glColor4f(material.diffuse.r, material.diffuse.g, material.diffuse.b, material.opacity);
3938 #else
3939       if(mesh.flags.colors)
3940       {
3941          glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
3942          glEnable(GL_COLOR_MATERIAL);
3943       }
3944       else
3945       {
3946          glDisable(GL_COLOR_MATERIAL);
3947          {
3948             float color[4] = { material.diffuse.r, material.diffuse.g, material.diffuse.b, material.opacity };
3949             glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, color);
3950          }
3951          {
3952             float color[4] = { material.ambient.r, material.ambient.g, material.ambient.b, 0 };
3953             glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, color);
3954          }
3955       }
3956       {
3957          float color[4] = { material.specular.r, material.specular.g, material.specular.b, 0 };
3958          glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, color);
3959       }
3960       {
3961          float color[4] = { material.emissive.r, material.emissive.g, material.emissive.b, 0 };
3962          glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, color);
3963       }
3964
3965       glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, &material.power);
3966 #endif
3967    }
3968
3969    void FreeMesh(DisplaySystem displaySystem, Mesh mesh)
3970    {
3971       OGLMesh oglMesh = mesh.data;
3972       if(oglMesh)
3973       {
3974          if(!mesh.flags.vertices)
3975          {
3976             oglMesh.vertices.free();
3977             delete mesh.vertices;
3978          }
3979          if(!mesh.flags.normals)
3980          {
3981             oglMesh.normals.free();
3982             delete mesh.normals;
3983          }
3984          if(!mesh.flags.texCoords1)
3985          {
3986             oglMesh.texCoords.free();
3987             delete mesh.texCoords;
3988          }
3989          if(!mesh.flags.texCoords2)
3990          {
3991             oglMesh.texCoords2.free();
3992             // delete mesh.texCoords2;
3993          }
3994          if(!mesh.flags.colors)
3995          {
3996             oglMesh.colors.free();
3997             delete mesh.colors;
3998          }
3999          if(!mesh.flags)
4000          {
4001             delete oglMesh;
4002             mesh.data = null;
4003          }
4004       }
4005    }
4006
4007    bool AllocateMesh(DisplaySystem displaySystem, Mesh mesh, MeshFeatures flags, int nVertices)
4008    {
4009       bool result = false;
4010
4011       if(!mesh.data)
4012          mesh.data = OGLMesh { };
4013       if(mesh.data)
4014       {
4015          if(mesh.nVertices == nVertices)
4016          {
4017             // Same number of vertices, adding features (Leaves the other features pointers alone)
4018             if(mesh.flags != flags)
4019             {
4020                if(!mesh.flags.vertices && flags.vertices)
4021                {
4022                   if(flags.doubleVertices)
4023                   {
4024                      mesh.vertices = (Vector3Df *)new Vector3D[nVertices];
4025                   }
4026                   else
4027                      mesh.vertices = new Vector3Df[nVertices];
4028                }
4029                if(!mesh.flags.normals && flags.normals)
4030                {
4031                   if(flags.doubleNormals)
4032                   {
4033                      mesh.normals = (Vector3Df *)new Vector3D[nVertices];
4034                   }
4035                   else
4036                      mesh.normals = new Vector3Df[nVertices];
4037                }
4038                if(!mesh.flags.texCoords1 && flags.texCoords1)
4039                {
4040                   mesh.texCoords = new Pointf[nVertices];
4041                }
4042                if(!mesh.flags.colors && flags.colors)
4043                {
4044                   mesh.colors = new ColorRGBAf[nVertices];
4045                }
4046             }
4047          }
4048          else
4049          {
4050             // New number of vertices, reallocate all current and new features
4051             flags |= mesh.flags;
4052             if(flags.vertices)
4053             {
4054                if(flags.doubleVertices)
4055                {
4056                   mesh.vertices = (Vector3Df *)renew mesh.vertices Vector3D[nVertices];
4057                }
4058                else
4059                   mesh.vertices = renew mesh.vertices Vector3Df[nVertices];
4060             }
4061             if(flags.normals)
4062             {
4063                if(flags.doubleNormals)
4064                {
4065                   mesh.normals = (Vector3Df *)renew mesh.normals Vector3D[nVertices];
4066                }
4067                else
4068                   mesh.normals = renew mesh.normals Vector3Df[nVertices];
4069             }
4070             if(flags.texCoords1)
4071             {
4072                mesh.texCoords = renew mesh.texCoords Pointf[nVertices];
4073             }
4074             if(flags.colors)
4075             {
4076                mesh.colors = renew mesh.colors ColorRGBAf[nVertices];
4077             }
4078          }
4079          result = true;
4080       }
4081       return result;
4082    }
4083
4084    void UnlockMesh(DisplaySystem displaySystem, Mesh mesh, MeshFeatures flags)
4085    {
4086       OGLMesh oglMesh = mesh.data;
4087       if(!flags) flags = mesh.flags;
4088
4089       if(vboAvailable)
4090       {
4091          if(flags.vertices)
4092             oglMesh.vertices.upload(
4093                mesh.nVertices * (mesh.flags.doubleVertices ? sizeof(Vector3D) : sizeof(Vector3Df)), mesh.vertices); //, GL_STATIC_DRAW_ARB );
4094
4095          if(flags.normals)
4096             oglMesh.normals.upload(
4097                mesh.nVertices * (mesh.flags.doubleNormals ? sizeof(Vector3D) : sizeof(Vector3Df)), mesh.normals); //, GL_STATIC_DRAW_ARB );
4098
4099          if(flags.texCoords1)
4100             oglMesh.texCoords.upload(
4101                mesh.nVertices * sizeof(Pointf), mesh.texCoords); //, GL_STATIC_DRAW_ARB );
4102
4103          if(flags.colors)
4104             oglMesh.colors.upload(
4105                mesh.nVertices * sizeof(ColorRGBAf), mesh.colors); //, GL_STATIC_DRAW_ARB );
4106       }
4107    }
4108
4109    bool LockMesh(DisplaySystem displaySystem, Mesh mesh, MeshFeatures flags)
4110    {
4111       bool result = true;
4112
4113         return result;
4114    }
4115
4116    void FreeIndices(DisplaySystem displaySystem, OGLIndices oglIndices)
4117    {
4118       if(oglIndices)
4119       {
4120          oglIndices.buffer.free();
4121          delete oglIndices.indices;
4122          delete oglIndices;
4123       }
4124    }
4125
4126    void * AllocateIndices(DisplaySystem displaySystem, int nIndices, bool indices32bit)
4127    {
4128       OGLIndices oglIndices = OGLIndices { };
4129       if(oglIndices)
4130       {
4131          oglIndices.indices = (void *)(indices32bit ? new uint32[nIndices] : new uint16[nIndices]);
4132          oglIndices.nIndices = nIndices;
4133       }
4134       return oglIndices;
4135    }
4136
4137    void UnlockIndices(DisplaySystem displaySystem, OGLIndices oglIndices, bool indices32bit, int nIndices)
4138    {
4139       if(vboAvailable)
4140       {
4141          oglIndices.buffer.upload(
4142             nIndices * (indices32bit ? sizeof(uint32) : sizeof(uint16)),
4143             oglIndices.indices); //GL_STATIC_DRAW_ARB);
4144       }
4145    }
4146
4147    uint16 * LockIndices(DisplaySystem displaySystem, OGLIndices oglIndices)
4148    {
4149
4150       return oglIndices.indices;
4151    }
4152
4153    void SelectMesh(Display display, Mesh mesh)
4154    {
4155       //Logf("SelectMesh\n");
4156
4157 #if !defined( __ANDROID__) && !defined(__APPLE__) && !defined(__EMSCRIPTEN__) && !defined(__ODROID__)
4158
4159 #if defined(__WIN32__)
4160       if(glUnlockArraysEXT)
4161 #endif
4162          if(!vboAvailable && display.display3D.mesh)
4163             glUnlockArraysEXT();
4164
4165 #endif
4166       if(mesh)
4167       {
4168          OGLMesh oglMesh = mesh.data;
4169
4170          // *** Vertex Stream ***
4171          glEnableClientState(GL_VERTEX_ARRAY);
4172          if(!display.display3D.collectingHits && oglMesh)
4173          {
4174             oglMesh.vertices.use(vertex, 3, (mesh.flags.doubleVertices ? GL_DOUBLE : GL_FLOAT), 0, oglMesh.vertices.buffer ? null : (double *)mesh.vertices);
4175
4176             // *** Normals Stream ***
4177             if(mesh.normals || mesh.flags.normals)
4178             {
4179                glEnableClientState(GL_NORMAL_ARRAY);
4180                oglMesh.normals.use(normal, 3, GL_FLOAT, 0, oglMesh.normals.buffer ? null : mesh.normals);
4181             }
4182             else
4183                glDisableClientState(GL_NORMAL_ARRAY);
4184
4185             // *** Texture Coordinates Stream ***
4186             if(mesh.texCoords || mesh.flags.texCoords1)
4187             {
4188                glEnableClientState(GL_TEXTURE_COORD_ARRAY);
4189                oglMesh.texCoords.use(texCoord, 2, GL_FLOAT, 0, oglMesh.texCoords.buffer ? null : mesh.texCoords);
4190             }
4191             else
4192                glDisableClientState(GL_TEXTURE_COORD_ARRAY);
4193
4194             // *** Color Stream ***
4195             if(mesh.colors || mesh.flags.colors)
4196             {
4197                glEnableClientState(GL_COLOR_ARRAY);
4198                oglMesh.colors.use(color, 4, GL_FLOAT, 0, oglMesh.colors.buffer ? null : mesh.colors);
4199             }
4200             else
4201                glDisableClientState(GL_COLOR_ARRAY);
4202          }
4203          else
4204          {
4205             noAB.use(vertex, 3, (mesh.flags.doubleVertices ? GL_DOUBLE : GL_FLOAT), 0, (double *)mesh.vertices);
4206             if((mesh.normals || mesh.flags.normals) && !display.display3D.collectingHits)
4207             {
4208                glEnableClientState(GL_NORMAL_ARRAY);
4209                noAB.use(normal, 3, GL_FLOAT, 0, mesh.normals);
4210             }
4211             else
4212                glDisableClientState(GL_NORMAL_ARRAY);
4213             if((mesh.texCoords || mesh.flags.texCoords1) && !display.display3D.collectingHits)
4214             {
4215                glEnableClientState(GL_TEXTURE_COORD_ARRAY);
4216                noAB.use(texCoord, 2, GL_FLOAT, 0, mesh.texCoords);
4217             }
4218             else
4219                glDisableClientState(GL_TEXTURE_COORD_ARRAY);
4220             if((mesh.colors || mesh.flags.colors) && !display.display3D.collectingHits)
4221             {
4222                glEnableClientState(GL_COLOR_ARRAY);
4223                noAB.use(color, 4, GL_FLOAT, 0, mesh.colors);
4224             }
4225             else
4226                glDisableClientState(GL_COLOR_ARRAY);
4227          }
4228
4229 #if !defined(__ANDROID__) && !defined(__APPLE__) && !defined(__EMSCRIPTEN__) && !defined(__ODROID__)
4230
4231 #if defined(__WIN32__)
4232          if(glLockArraysEXT)
4233 #endif
4234             if(!vboAvailable)
4235                glLockArraysEXT(0, mesh.nVertices);
4236
4237 #endif
4238       }
4239    }
4240
4241    void DrawPrimitives(Display display, PrimitiveSingle * primitive, Mesh mesh)
4242    {
4243       //Logf("DrawPrimitives\n");
4244
4245       if(primitive->type.vertexRange)
4246          glDrawArrays(primitiveTypes[primitive->type.primitiveType], primitive->first, primitive->nVertices);
4247       else
4248       {
4249          //    *** Hoping the data won't be uploaded at all (Won't really work if another group of the mesh is using the mesh ) ***
4250          // HACK TO SPEED THINGS UP...
4251 #ifndef __ANDROID__
4252          /*GLBindBuffer(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
4253          if(primitive->nIndices < (mesh.nVertices >> 2) && !primitive->type.indices32bit)
4254          {
4255             int c;
4256             glBegin(primitiveTypes[primitive->type.primitiveType]);
4257             if(primitive->data)
4258             {
4259                OGLIndices oglIndices = primitive->data;
4260                MeshFeatures flags = mesh.flags;
4261                for(c = 0; c<primitive->nIndices; c++)
4262                {
4263                   uint16 index = ((uint16 *) oglIndices.indices)[c];
4264                   if(flags.normals) glNormal3fv((float *)&mesh.normals[index]);
4265                   if(flags.texCoords1) glTexCoord2fv((float *)&mesh.texCoords[index]);
4266                   if(flags.colors) glColor4fv((float *)&mesh.colors[index]);
4267                   glVertex3fv((float *)&mesh.vertices[index]);
4268                }
4269             }
4270             glEnd();
4271          }
4272          else*/
4273 #endif
4274          {
4275             OGLIndices oglIndices = primitive->data;
4276
4277             if(!display.display3D.collectingHits && vboAvailable && oglIndices)
4278             {
4279                if(primitive->type.indices32bit)
4280                   ; //oglIndices.buffer.draw(primitiveTypes[primitive->type.primitiveType], primitive->nIndices, GL_UNSIGNED_SHORT, 0);
4281                else
4282                   oglIndices.buffer.draw(primitiveTypes[primitive->type.primitiveType], primitive->nIndices, GL_UNSIGNED_SHORT, 0);
4283             }
4284             else
4285             {
4286                if(primitive->type.indices32bit)
4287                   glDrawElementsi(primitiveTypes[primitive->type.primitiveType], primitive->nIndices,
4288                      oglIndices ? oglIndices.indices : primitive->indices);
4289                else
4290                   glDrawElements(primitiveTypes[primitive->type.primitiveType], primitive->nIndices,
4291                      GL_UNSIGNED_SHORT, oglIndices ? oglIndices.indices : primitive->indices);
4292             }
4293          }
4294       }
4295    }
4296
4297    void PushMatrix(Display display)
4298    {
4299       glPushMatrix();
4300    }
4301
4302    void PopMatrix(Display display, bool setMatrix)
4303    {
4304       glPopMatrix();
4305    }
4306
4307    void SetTransform(Display display, Matrix transMatrix, bool viewSpace, bool useCamera)
4308    {
4309       Matrix matrix = transMatrix;
4310       Camera camera = useCamera ? display.display3D.camera : null;
4311
4312       if(viewSpace)
4313       {
4314          glLoadIdentity();
4315          glScaled(1.0/nearPlane, 1.0/nearPlane, -1.0/nearPlane);
4316       }
4317       else if(camera)
4318       {
4319          glTranslated(
4320             matrix.m[3][0] - camera.cPosition.x,
4321             matrix.m[3][1] - camera.cPosition.y,
4322             matrix.m[3][2] - camera.cPosition.z);
4323       }
4324       else
4325          glTranslated(
4326             matrix.m[3][0],
4327             matrix.m[3][1],
4328             matrix.m[3][2]);
4329
4330       matrix.m[3][0] = 0;
4331       matrix.m[3][1] = 0;
4332       matrix.m[3][2] = 0;
4333
4334       glMultMatrixd(matrix.array);
4335    }
4336 #endif
4337 }
4338
4339 public void UseSingleGLContext(bool useSingle)
4340 {
4341    useSingleGLContext = useSingle;
4342 }
4343
4344 default dllexport void *
4345 #if defined(__WIN32__)
4346 __attribute__((stdcall))
4347 #endif
4348 IS_GLGetContext(DisplaySystem displaySystem)
4349 {
4350    if(displaySystem)
4351    {
4352 #if defined(__WIN32__)
4353       OGLSystem system = displaySystem.driverData;
4354       return system.glrc;
4355 #elif defined(__ANDROID__) || defined(__ODROID__)
4356       return eglContext;
4357 #elif defined(__EMSCRIPTEN__)
4358 #else
4359       OGLSystem system = displaySystem.driverData;
4360       return system.glContext;
4361 #endif
4362    }
4363    return null;
4364 }
4365
4366 #endif