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