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, &buffer);
1352          if(curArrayBuffer != buffer)
1353          {
1354             glBindBuffer(GL_ARRAY_BUFFER, buffer);
1355             curArrayBuffer = buffer;
1356          }
1357          glBufferData(GL_ARRAY_BUFFER, size, data, GL_STATIC_DRAW);  //GL_DYNAMIC_DRAW);
1358       }
1359    }
1360
1361    void free()
1362    {
1363       if(this != null)
1364       {
1365          glDeleteBuffers(1, &buffer);
1366          buffer = 0;
1367       }
1368    }
1369
1370    void use(GLBufferContents contents, int n, int type, uint stride, void * pointer)
1371    {
1372       if(curArrayBuffer != ((this != null) ? buffer : 0))
1373       {
1374          glBindBuffer(GL_ARRAY_BUFFER, ((this != null) ? buffer : 0));
1375          curArrayBuffer = ((this != null) ? buffer : 0);
1376       }
1377       switch(contents)
1378       {
1379          case normal:   glNormalPointer(type, stride, pointer); break;
1380          case vertex:   glVertexPointer(n, type, stride, pointer); break;
1381          case texCoord: glTexCoordPointer(n, type, stride, pointer); break;
1382          case color:    glColorPointer(n, type, stride, pointer); break;
1383       }
1384    }
1385 };
1386
1387 static uint curElementBuffer;
1388
1389 public define noEAB = GLEAB { 0 };
1390
1391 public struct GLEAB
1392 {
1393    uint buffer;
1394
1395    void upload(uint size, void * data)
1396    {
1397       if(this != null)
1398       {
1399          if(!buffer)
1400             glGenBuffers(1, &buffer);
1401
1402          if(curElementBuffer != buffer)
1403          {
1404             glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer);
1405             curElementBuffer = buffer;
1406          }
1407          glBufferData(GL_ELEMENT_ARRAY_BUFFER, size, data, GL_STATIC_DRAW);  //GL_DYNAMIC_DRAW);
1408       }
1409    }
1410
1411    void free()
1412    {
1413       if(this != null)
1414       {
1415          glDeleteBuffers(1, &buffer);
1416          buffer = 0;
1417       }
1418    }
1419
1420    void draw(int primType, int count, int type, void * indices)
1421    {
1422       if(curElementBuffer != ((this != null) ? buffer : 0))
1423       {
1424          glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ((this != null) ? buffer : 0));
1425          curElementBuffer = ((this != null) ? buffer : 0);
1426       }
1427       glDrawElements(primType, count, type, indices);
1428    }
1429 };
1430
1431 public void GLGenBuffers(int count, GLAB * buffers)
1432 {
1433 #if defined(__ANDROID__) || defined(__ODROID__)
1434    glGenBuffers(count, (GLuint *)buffers);
1435 #else
1436 #if defined(__WIN32__)
1437    if(glGenBuffersARB)
1438 #endif
1439       glGenBuffersARB(count, (GLuint *)buffers);
1440 #endif
1441 }
1442
1443 public void GLDeleteBuffers(int count, GLAB * buffers)
1444 {
1445 #if defined(__ANDROID__) || defined(__ODROID__)
1446    glDeleteBuffers(count, (GLuint *)buffers);
1447 #else
1448 #if defined(__WIN32__)
1449    if(glDeleteBuffersARB)
1450 #endif
1451       glDeleteBuffersARB(count, (GLuint *)buffers);
1452 #endif
1453 }
1454
1455 void GLBindBuffer(int target, uint buffer)
1456 {
1457 #if defined(__ANDROID__) || defined(__ODROID__)
1458    glBindBuffer(target, buffer);
1459 #else
1460 #if defined(__WIN32__)
1461    if(glBindBufferARB)
1462 #endif
1463       glBindBufferARB(target, buffer);
1464 #endif
1465    if(target == GL_ARRAY_BUFFER_ARB)
1466       curArrayBuffer = buffer;
1467    else if(target == GL_ELEMENT_ARRAY_BUFFER_ARB)
1468       curElementBuffer = buffer;
1469 }
1470
1471 public void GLVertexPointer(int numCoords, int glType, int stride, void *ptr, int numVertices)
1472 {
1473 #ifdef _GLES
1474    if(glType == GL_DOUBLE)
1475       glesVertexPointerd(numCoords, stride, ptr, numVertices);
1476    else if(glType == GL_INT)
1477       glesVertexPointeri(numCoords, stride, ptr, numVertices);
1478    else
1479 #endif
1480       glVertexPointer(numCoords, glType, stride, ptr);
1481 }
1482
1483 public void GLBufferData(int type, GLenum target, int size, const GLvoid *data, GLenum usage)
1484 {
1485 #ifdef _GLES
1486    if(type == GL_DOUBLE)
1487       glesBufferDatad(target, size, (void *)data, usage);
1488    else if(type == GL_UNSIGNED_INT)
1489       glesBufferDatai(target, size, (void *)data, usage);
1490    else
1491 #endif
1492
1493 #if defined(__ANDROID__) || defined(__ODROID__)
1494       glBufferData(target, size, data, usage);
1495 #else
1496
1497 #if defined(__WIN32__)
1498    if(glBufferDataARB)
1499 #endif
1500       glBufferDataARB(target, size, data, usage);
1501 #endif
1502 }
1503
1504 #if !defined(ECERE_NO3D) && !defined(ECERE_VANILLA)
1505 static int primitiveTypes[RenderPrimitiveType] =
1506 {
1507    GL_POINTS, GL_LINES, GL_TRIANGLES, GL_TRIANGLE_STRIP, GL_TRIANGLE_FAN, GL_QUADS, GL_QUAD_STRIP, GL_LINE_STRIP
1508 };
1509 #endif
1510
1511
1512 // Non OpenGL ES friendly stuff
1513
1514 #if defined(_GLES)
1515
1516 //#undef GL_UNSIGNED_INT
1517 //#undef GL_DOUBLE
1518 #undef GL_INT
1519 //#undef GL_POLYGON
1520 //#undef GL_QUADS
1521 #undef GL_QUAD_STRIP
1522 #undef GL_POLYGON_STIPPLE
1523 #undef GL_LINE_STIPPLE
1524 #undef GL_LINE
1525 #undef GL_FILL
1526 #undef GL_ALL_ATTRIB_BITS
1527 #undef GL_LIGHT_MODEL_LOCAL_VIEWER
1528
1529 #endif
1530
1531 static int displayWidth, displayHeight;
1532
1533 #define GL_CLAMP_TO_EDGE 0x812F
1534
1535 static bool vboAvailable;
1536
1537 static bool useSingleGLContext = false;
1538 class OGLDisplay : struct
1539 {
1540 #if defined(__WIN32__)
1541    HDC hdc;
1542    HGLRC glrc;
1543
1544    HBITMAP memBitmap;
1545    HDC memDC;
1546    byte * picture;
1547    uint stride;
1548    void * pBuffer;
1549    /*
1550    int imageBuffers[2];
1551    byte * pboMemory1, * pboMemory2;
1552    */
1553 #elif !defined(__ANDROID__) && !defined(__ODROID__)
1554    GLXContext glContext;
1555
1556    Pixmap pixmap;
1557    XShmSegmentInfo shminfo;
1558    XImage * image;
1559    XShmSegmentInfo shminfoShape;
1560    XImage * shapeImage;
1561    byte * picture;
1562    uint stride;
1563    GLXPbuffer pBuffer;
1564    X11Picture windowPicture;
1565    X11Picture pixmapPicture;
1566    Pixmap shapePixmap;
1567    X11Picture shapePicture;
1568 #endif
1569
1570    ColorAlpha * flippingBuffer;
1571    int flipBufH, flipBufW;
1572    bool depthWrite;
1573    int x, y;
1574 };
1575
1576 class OGLSystem : struct
1577 {
1578    int maxTextureSize;
1579    bool loadingFont;
1580    bool pow2textures;
1581 #if defined(__WIN32__)
1582    PIXELFORMATDESCRIPTOR pfd;
1583    int format;
1584    HDC hdc;
1585    HGLRC glrc;
1586    HWND hwnd;
1587 #elif !defined(__ANDROID__) && !defined(__ODROID__)
1588    XVisualInfo * visualInfo;
1589    GLXContext glContext;
1590    GLXDrawable glxDrawable;
1591 #endif
1592 };
1593
1594 class OGLSurface : struct
1595 {
1596    Font font;
1597    bool opaqueText;
1598    int xOffset;
1599    bool writingText;
1600
1601    float foreground[4], background[4], bitmapMult[4];
1602 } OGLSurface;
1603
1604 class OGLMesh : struct
1605 {
1606    GLAB vertices;
1607    GLAB normals;
1608    GLAB texCoords;
1609    GLAB texCoords2;
1610    GLAB colors;
1611 };
1612
1613 class OGLIndices : struct
1614 {
1615    uint16 * indices;
1616    GLEAB buffer;
1617    uint nIndices;
1618 };
1619
1620 int current;
1621 void * previous;
1622
1623 class OpenGLDisplayDriver : DisplayDriver
1624 {
1625    class_property(name) = "OpenGL";
1626
1627    bool LockSystem(DisplaySystem displaySystem)
1628    {
1629 #if !defined(__ANDROID__) && !defined(__ODROID__)
1630       OGLSystem oglSystem = displaySystem.driverData;
1631       if(useSingleGLContext) return true;
1632    #if defined(__WIN32__)
1633       wglMakeCurrent(oglSystem.hdc, oglSystem.glrc);
1634    #elif defined(__unix__) || defined(__APPLE__)
1635       //if(previous) return true;
1636       // printf("Making SYSTEM current\n");
1637       glXMakeCurrent(xGlobalDisplay, (GLXDrawable)oglSystem.glxDrawable, oglSystem.glContext);
1638       //previous = oglSystem.glContext;
1639    #endif
1640 #endif
1641       return true;
1642    }
1643
1644    void UnlockSystem(DisplaySystem displaySystem)
1645    {
1646       if(useSingleGLContext) return;
1647    #if defined(__WIN32__)
1648       wglMakeCurrent(null, null);
1649    #elif defined(__unix__) || defined(__APPLE__)
1650       // printf("Making NULL current\n");
1651       #if defined(__ANDROID__) || defined(__ODROID__)
1652       #else
1653       glXMakeCurrent(xGlobalDisplay, None, null);
1654       #endif
1655       // previous = null;
1656    #endif
1657    }
1658
1659    bool Lock(Display display)
1660    {
1661 #if !defined(__ANDROID__) && !defined(__ODROID__)
1662       OGLDisplay oglDisplay = display.driverData;
1663       if(useSingleGLContext) return true;
1664    #if defined(__WIN32__)
1665       wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
1666    #elif defined(__unix__) || defined(__APPLE__)
1667       // if(previous) glXMakeCurrent(xGlobalDisplay, None, null);
1668       // printf("   Making DISPLAY current\n");
1669       glXMakeCurrent(xGlobalDisplay, (GLXDrawable)display.window, oglDisplay.glContext);
1670    #endif
1671 #endif
1672       return true;
1673    }
1674
1675    void Unlock(Display display)
1676    {
1677       if(useSingleGLContext) return;
1678       //printf("   Making NULL current\n");
1679       //glXMakeCurrent(xGlobalDisplay, None, null);
1680       // if(previous)
1681          LockSystem(display.displaySystem);
1682    }
1683
1684    void DestroyDisplay(Display display)
1685    {
1686       OGLDisplay oglDisplay = display.driverData;
1687
1688       if(oglDisplay)
1689       {
1690    #if defined(__WIN32__)
1691          wglMakeCurrent( null, null );
1692
1693          if(oglDisplay.glrc)
1694             wglDeleteContext(oglDisplay.glrc);
1695
1696          if(oglDisplay.hdc && oglDisplay.pBuffer)
1697             wglReleasePbufferDCARB(oglDisplay.pBuffer, oglDisplay.hdc);
1698
1699          if(oglDisplay.pBuffer)
1700             wglDestroyPbufferARB(oglDisplay.pBuffer);
1701
1702          if(oglDisplay.hdc)
1703             ReleaseDC(display.window, oglDisplay.hdc);
1704
1705          if(oglDisplay.memDC) DeleteDC(oglDisplay.memDC);
1706          if(oglDisplay.memBitmap) DeleteObject(oglDisplay.memBitmap);
1707
1708    #elif defined(__unix__) || defined(__APPLE__)
1709       #if defined(__ANDROID__) || defined(__ODROID__)
1710       #else
1711          if(oglDisplay.shapePixmap)
1712             XFreePixmap(xGlobalDisplay, oglDisplay.shapePixmap);
1713          if(oglDisplay.pixmap)
1714             XFreePixmap(xGlobalDisplay, oglDisplay.pixmap);
1715          if(oglDisplay.image)
1716          {
1717             if(oglDisplay.shminfoShape.shmid != -1)
1718             {
1719                XShmDetach(xGlobalDisplay, &oglDisplay.shminfo);
1720                if(oglDisplay.shminfo.shmaddr != (void *)-1)
1721                   shmdt(oglDisplay.shminfo.shmaddr);
1722                shmctl(oglDisplay.shminfo.shmid, IPC_RMID, 0);
1723             }
1724          }
1725          if(oglDisplay.shapeImage)
1726          {
1727             if(oglDisplay.shminfoShape.shmid != -1)
1728             {
1729                XShmDetach(xGlobalDisplay, &oglDisplay.shminfoShape);
1730                if(oglDisplay.shminfoShape.shmaddr != (void *)-1)
1731                   shmdt(oglDisplay.shminfoShape.shmaddr);
1732                shmctl(oglDisplay.shminfoShape.shmid, IPC_RMID, 0);
1733             }
1734             XDestroyImage(oglDisplay.shapeImage);
1735             oglDisplay.shapeImage = None;
1736          }
1737
1738          glXMakeCurrent(xGlobalDisplay, None, null);
1739
1740          if(oglDisplay.glContext)
1741             glXDestroyContext(xGlobalDisplay, oglDisplay.glContext);
1742       #endif
1743    #endif
1744          delete oglDisplay.flippingBuffer;
1745          delete oglDisplay;
1746          display.driverData = null;
1747       }
1748    }
1749
1750    void ::CheckExtensions(OGLSystem oglSystem)
1751    {
1752       const char * extensions = (const char *)glGetString(GL_EXTENSIONS);
1753       if(extensions)
1754          oglSystem.pow2textures = strstr(extensions, "GL_ARB_texture_non_power_of_two") ? false : true;
1755       glGetIntegerv(GL_MAX_TEXTURE_SIZE, &oglSystem.maxTextureSize);
1756    }
1757
1758    bool CreateDisplaySystem(DisplaySystem displaySystem)
1759    {
1760       bool result = false;
1761       OGLSystem oglSystem = displaySystem.driverData = OGLSystem { };
1762
1763    #ifdef __WIN32__
1764       oglSystem.hwnd = CreateWindow("static", null, 0,0,0,0,0,null,null,null,null);
1765
1766       oglSystem.hdc = GetDC(oglSystem.hwnd);
1767       if(oglSystem.hdc)
1768       {
1769
1770          oglSystem.pfd.nSize = (short)sizeof(oglSystem.pfd);
1771          oglSystem.pfd.nVersion = 1;
1772          oglSystem.pfd.dwFlags = PFD_DRAW_TO_WINDOW /*PFD_DRAW_TO_BITMAP*/ | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
1773          oglSystem.pfd.iPixelType = PFD_TYPE_RGBA;
1774          oglSystem.pfd.cColorBits = 24;
1775          oglSystem.pfd.cAlphaBits = 8;
1776          oglSystem.pfd.cDepthBits = 24;
1777          oglSystem.pfd.iLayerType = PFD_MAIN_PLANE;
1778
1779          oglSystem.format = ChoosePixelFormat(oglSystem.hdc, &oglSystem.pfd);
1780          DescribePixelFormat(oglSystem.hdc, oglSystem.format, sizeof(oglSystem.pfd), &oglSystem.pfd);
1781
1782          if(oglSystem.pfd.cColorBits > 8)
1783          {
1784             SetPixelFormat(oglSystem.hdc, oglSystem.format, &oglSystem.pfd);
1785             oglSystem.glrc = wglCreateContext(oglSystem.hdc);
1786             if(oglSystem.glrc)
1787             {
1788                wglMakeCurrent(oglSystem.hdc, oglSystem.glrc);
1789
1790                  // Get Pointers To The GL Functions
1791                glActiveTextureARB = (void *) wglGetProcAddress("glActiveTextureARB");
1792                glMultiTexCoord2fARB = (void *) wglGetProcAddress("glMultiTexCoord2fARB");
1793                glClientActiveTextureARB = (void *) wglGetProcAddress("glClientActiveTextureARB");
1794                glLockArraysEXT = (void *) wglGetProcAddress("glLockArraysEXT" );
1795                glUnlockArraysEXT = (void *) wglGetProcAddress("glUnlockArraysEXT");
1796                  glGenBuffersARB = (void *) wglGetProcAddress("glGenBuffersARB");
1797                  glBindBufferARB = (void *) wglGetProcAddress("glBindBufferARB");
1798                  glBufferDataARB = (void *) wglGetProcAddress("glBufferDataARB");
1799                glMapBufferARB  = (void *) wglGetProcAddress("glMapBufferARB");
1800                glUnmapBufferARB  = (void *) wglGetProcAddress("glUnmapBufferARB");
1801                  glDeleteBuffersARB = (void *) wglGetProcAddress("glDeleteBuffersARB");
1802                glBlendFuncSeparate = (void *) wglGetProcAddress("glBlendFuncSeparate");
1803
1804                wglChoosePixelFormatARB = (void *) wglGetProcAddress("wglChoosePixelFormatARB");
1805                wglGetExtensionsStringARB = (void *)wglGetProcAddress("wglGetExtensionsStringARB");
1806                wglCreatePbufferARB = (void *)wglGetProcAddress("wglCreatePbufferARB");
1807                wglGetPbufferDCARB = (void *)wglGetProcAddress("wglGetPbufferDCARB");
1808                wglQueryPbufferARB = (void *)wglGetProcAddress("wglQueryPbufferARB");
1809                wglDestroyPbufferARB = (void *)wglGetProcAddress("wglDestroyPbufferARB");
1810                wglReleasePbufferDCARB = (void *)wglGetProcAddress("wglReleasePbufferDCARB");
1811                wglBindTexImageARB = (void *)wglGetProcAddress("wglBindTexImageARB");
1812                wglReleaseTexImageARB = (void *)wglGetProcAddress("wglReleaseTexImageARB");
1813
1814                wglSwapIntervalEXT = (void *)wglGetProcAddress("wglSwapIntervalEXT");
1815
1816                vboAvailable = glBindBufferARB != null;
1817
1818                // eSystem_LoggingMode(LOG_MSGBOX, null);
1819
1820                if(wglChoosePixelFormatARB)
1821                {
1822                     int pixelFormat;
1823                     int valid;
1824                     int numFormats;
1825                     float fAttributes[] = {0,0};
1826                     int iAttributes[] =
1827                   {
1828                      WGL_DRAW_TO_WINDOW_ARB,GL_TRUE,
1829                             WGL_SUPPORT_OPENGL_ARB,GL_TRUE,
1830                             WGL_ACCELERATION_ARB,WGL_FULL_ACCELERATION_ARB,
1831                             WGL_COLOR_BITS_ARB,24,
1832                             WGL_ALPHA_BITS_ARB,8,
1833                             WGL_DEPTH_BITS_ARB,16,
1834                             WGL_STENCIL_BITS_ARB,0,
1835                             WGL_DOUBLE_BUFFER_ARB,GL_TRUE,
1836                             WGL_SAMPLE_BUFFERS_ARB,GL_TRUE,
1837                             WGL_SAMPLES_ARB, 4,                                         // Check For 4x Multisampling
1838                             0,0
1839                   };
1840
1841                   //Log("Found wglChoosePixelFormatARB\n");
1842
1843                     valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1844                     if(!valid || !numFormats)
1845                     {
1846                      //Log("Can't find 4x multi sampling\n");
1847                        iAttributes[19] = 2;
1848                        valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1849                      if(!valid || !numFormats)
1850                      {
1851                         // Log("Can't find 2x multi sampling\n");
1852                         iAttributes[16] = 0;
1853                         iAttributes[17] = 0;
1854                         valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1855                      }
1856                     }
1857                   if(valid && numFormats)
1858                   {
1859                      oglSystem.format = pixelFormat;
1860                      wglMakeCurrent(null, null);
1861                      wglDeleteContext(oglSystem.glrc);
1862
1863                      // *** DescribePixelFormat does not support WGL pixel formats! ***
1864                      //DescribePixelFormat(oglSystem.hdc, oglSystem.format, sizeof(oglSystem.pfd), &oglSystem.pfd);
1865                      SetPixelFormat(oglSystem.hdc, oglSystem.format, &oglSystem.pfd);
1866                      //Log("Successfully set pixel format\n");
1867
1868                      oglSystem.glrc = wglCreateContext(oglSystem.hdc);
1869                      wglMakeCurrent(oglSystem.hdc, oglSystem.glrc);
1870                   }
1871                }
1872                /*else
1873                   eSystem_Logf("Can't find wglChoosePixelFormatARB\n");*/
1874
1875                result = true;
1876
1877                CheckExtensions(oglSystem);
1878
1879                wglMakeCurrent(null, null);
1880
1881                //eSystem_DumpErrors(true);
1882             }
1883          }
1884       }
1885    #elif defined(__unix__) || defined(__APPLE__)
1886       vboAvailable = true;
1887       #if defined(__ANDROID__)
1888          egl_init_display(guiApp.desktop.windowHandle);
1889       #elif defined(__ODROID__)
1890          egl_init_display((uint)displaySystem.window);
1891          CheckExtensions(oglSystem);
1892          result = true;
1893       #else
1894       {
1895          X11Window root = RootWindow( xGlobalDisplay, DefaultScreen( xGlobalDisplay ) );
1896          XSetWindowAttributes attr;
1897          unsigned long mask;
1898
1899          int attrList[] =
1900          {
1901       #ifndef ECERE_MINIGLX
1902             GLX_USE_GL, GLX_DEPTH_SIZE, 1,
1903       #endif
1904             GLX_RGBA,
1905             GLX_RED_SIZE, 1, GLX_GREEN_SIZE, 1, GLX_BLUE_SIZE, 1,
1906             GLX_DOUBLEBUFFER,
1907             None
1908          };
1909          oglSystem.visualInfo = glXChooseVisual( xGlobalDisplay,  DefaultScreen( xGlobalDisplay ), attrList );
1910          attr.background_pixel = 0;
1911          attr.border_pixel = 0;
1912          attr.colormap = XCreateColormap( xGlobalDisplay, root, oglSystem.visualInfo->visual, AllocNone);
1913          attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
1914          mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
1915
1916          oglSystem.glxDrawable = XCreateWindow( xGlobalDisplay, root, 0, 0, 1, 1, 0, oglSystem.visualInfo->depth, InputOutput,
1917             oglSystem.visualInfo->visual, mask, &attr );
1918       }
1919       if(oglSystem.visualInfo)
1920       {
1921          oglSystem.glContext = glXCreateContext(xGlobalDisplay, oglSystem.visualInfo, null, True);
1922          if(oglSystem.glContext)
1923          {
1924             glXMakeCurrent(xGlobalDisplay, oglSystem.glxDrawable, oglSystem.glContext);
1925             // Setup Extensions
1926             CheckExtensions(oglSystem);
1927             glXMakeCurrent(xGlobalDisplay, None, null);
1928             result = true;
1929          }
1930       }
1931       #endif
1932    #endif
1933
1934       displaySystem.flags.alpha = true;
1935       displaySystem.flags.flipping = true;
1936       displaySystem.pixelFormat = pixelFormat888;
1937       return result;
1938    }
1939
1940    void DestroyDisplaySystem(DisplaySystem displaySystem)
1941    {
1942       OGLSystem oglSystem = displaySystem.driverData;
1943
1944    #if defined(__WIN32__)
1945       wglMakeCurrent( null, null );
1946
1947       if(oglSystem.glrc)
1948          wglDeleteContext(oglSystem.glrc);
1949
1950       if(oglSystem.hdc)
1951          ReleaseDC(oglSystem.hwnd, oglSystem.hdc);
1952       DestroyWindow(oglSystem.hwnd);
1953
1954    #elif defined(__unix__) || defined(__APPLE__)
1955       #if defined(__ANDROID__) || defined(__ODROID__)
1956          egl_term_display();
1957       #else
1958       if(oglSystem.visualInfo)
1959       {
1960    #ifdef   ECERE_MINIGLX
1961          __miniglx_XFree(oglSystem.visualInfo);
1962    #else
1963          XFree(oglSystem.visualInfo);
1964    #endif
1965       }
1966
1967       if(oglSystem.glxDrawable)
1968       {
1969          XDestroyWindow(xGlobalDisplay, oglSystem.glxDrawable);
1970          oglSystem.glxDrawable = 0;
1971       }
1972       #endif
1973    #endif
1974       delete oglSystem;
1975    }
1976
1977    bool CreateDisplay(Display display)
1978    {
1979       bool result = false;
1980       OGLDisplay oglDisplay = display.driverData;
1981 #if !defined(__ANDROID__) && !defined(__ODROID__)
1982       OGLSystem oglSystem = display.displaySystem.driverData;
1983 #endif
1984       if(!oglDisplay)
1985          oglDisplay = display.driverData = OGLDisplay { };
1986       //printf("Inside CreateDisplay\n");
1987
1988 #if defined(__WIN32__) || defined(USEPBUFFER)
1989       if(!display.alphaBlend)
1990 #endif
1991       {
1992    #if defined(__WIN32__)
1993          oglDisplay.hdc = GetDC(display.window);
1994          SetPixelFormat(oglDisplay.hdc, oglSystem.format, &oglSystem.pfd);
1995          if((oglDisplay.glrc = wglCreateContext(oglDisplay.hdc)))
1996          {
1997             wglShareLists(oglSystem.glrc, oglDisplay.glrc);
1998             wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
1999             result = true;
2000          }
2001          else
2002             ReleaseDC(display.window, oglDisplay.hdc);
2003    #elif defined(__unix__) || defined(__APPLE__)
2004       #if defined(__ANDROID__) || defined(__ODROID__)
2005       #else
2006          XVisualInfo * visualInfo = ((XWindowData)display.windowDriverData).visual;
2007          /*
2008 #if defined(__APPLE__)
2009          XVisualInfo template = { 0 };
2010          XWindowAttributes winAttr;
2011          int n;
2012          XGetWindowAttributes(xGlobalDisplay, (X11Window)display.window, &winAttr);
2013          template.visualid = XVisualIDFromVisual(winAttr.visual);
2014          visualInfo = XGetVisualInfo(xGlobalDisplay, VisualIDMask, &template, &n);
2015 #ifdef _DEBUG
2016          printf("XGetVisualInfo visual ID = %d\n", template.visualid);
2017          printf("visualInfo visual ID = %d\n", visualInfo->visualid);
2018          printf("oglSystem.visualInfo visual ID = %d\n", oglSystem.visualInfo->visualid);
2019          printf("((XWindowData)display.windowDriverData).visual visual ID = %d\n", ((XWindowData)display.windowDriverData).visual->visualid);
2020 #endif
2021          // visualInfo = oglSystem.visualInfo;
2022 //#endif
2023          */
2024          if(visualInfo)
2025          {
2026             //printf("visualInfo is not null\n");
2027             // printf("Creating Display Context, sharing with %x!\n", oglSystem.glContext);
2028             oglDisplay.glContext = glXCreateContext(xGlobalDisplay, visualInfo, oglSystem.glContext, True);
2029             //XFree(visualInfo);
2030          }
2031
2032          // oglDisplay.glContext = glXCreateContext(xGlobalDisplay, oglSystem.visualInfo, oglSystem.glContext, True);
2033          if(oglDisplay.glContext)
2034          {
2035             //printf("CreateDisplay Got a Context\n");
2036             glXMakeCurrent(xGlobalDisplay, (GLXDrawable)display.window, oglDisplay.glContext);
2037             result = true;
2038          }
2039       #endif
2040    #endif
2041       }
2042 #if defined(__WIN32__) || defined(USEPBUFFER)
2043       else
2044          result = true;
2045 #endif
2046       if(result)
2047       {
2048 #if defined(__WIN32__)
2049          if(glBlendFuncSeparate)
2050             glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
2051          else
2052             glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2053 #else
2054 #if !defined(__OLDX__)
2055           glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
2056 #else
2057          glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2058 #endif
2059 #endif
2060          glEnable(GL_BLEND);
2061
2062          glMatrixMode(GL_MODELVIEW);
2063          glScaled(1.0, 1.0, -1.0);
2064          // glTranslatef(0.375f, 0.375f, 0.0f);
2065          // glTranslatef(-0.625f, -0.625f, 0.0f);
2066          glMatrixMode(GL_PROJECTION);
2067          glShadeModel(GL_FLAT);
2068
2069          // glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, true);
2070          glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
2071          glFogi(GL_FOG_MODE, GL_EXP);
2072          glFogf(GL_FOG_DENSITY, 0);
2073          glEnable(GL_NORMALIZE);
2074          glDepthFunc(GL_LESS);
2075          glClearDepth(1.0);
2076          glDisable(GL_MULTISAMPLE_ARB);
2077       }
2078 #if !defined(ECERE_NO3D) && !defined(ECERE_VANILLA)
2079       display.ambient = Color { 50,50,50 };
2080 #endif
2081
2082       if(!useSingleGLContext)
2083       {
2084    #if defined(__WIN32__)
2085          wglMakeCurrent(null, null);
2086    #elif defined(__unix__) || defined(__APPLE__)
2087       #if defined(__ANDROID__) || defined(__ODROID__)
2088          result = true;
2089       #else
2090          glXMakeCurrent(xGlobalDisplay, None, null);
2091       #endif
2092    #endif
2093       }
2094       else
2095       {
2096       #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
2097          result = true;
2098       #endif
2099       }
2100
2101       return result;
2102    }
2103
2104    bool DisplaySize(Display display, int width, int height)
2105    {
2106       OGLDisplay oglDisplay = display.driverData;
2107
2108       bool result = false;
2109
2110       //printf("Inside DisplaySize\n");
2111 #if defined(__WIN32__) || defined(USEPBUFFER)
2112       OGLSystem oglSystem = display.displaySystem.driverData;
2113       if(display.alphaBlend)
2114       {
2115 #if defined(__WIN32__)
2116          const int attributes[]=
2117          {
2118             /*WGL_TEXTURE_FORMAT_ARB, WGL_TEXTURE_RGBA_ARB,
2119             WGL_TEXTURE_TARGET_ARB, WGL_TEXTURE_2D_ARB, */0
2120          };
2121          int pixelFormat = 0;
2122          if(wglChoosePixelFormatARB)
2123          {
2124             int valid;
2125             int numFormats;
2126             float fAttributes[] = {0,0};
2127             int iAttributes[] =
2128             {
2129                //WGL_DRAW_TO_BITMAP_ARB, GL_TRUE,
2130                WGL_DRAW_TO_PBUFFER_ARB,GL_TRUE,
2131                     WGL_SUPPORT_OPENGL_ARB,GL_TRUE,
2132                     WGL_ACCELERATION_ARB,WGL_FULL_ACCELERATION_ARB,
2133                     WGL_COLOR_BITS_ARB,24,
2134                     WGL_ALPHA_BITS_ARB,8,
2135                     WGL_DEPTH_BITS_ARB,16,
2136                     WGL_STENCIL_BITS_ARB,0,
2137                     WGL_DOUBLE_BUFFER_ARB,GL_FALSE,
2138                     WGL_SAMPLE_BUFFERS_ARB,GL_TRUE,
2139                     WGL_SAMPLES_ARB, 4,                                         // Check For 4x Multisampling
2140                     0,0
2141             };
2142
2143             //Log("Found wglChoosePixelFormatARB\n");
2144
2145             valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
2146             if(!valid || !numFormats)
2147             {
2148                //Log("Can't find 4x multi sampling\n");
2149                iAttributes[19] = 2;
2150                valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
2151                if(!valid || !numFormats)
2152                {
2153                   // Log("Can't find 2x multi sampling\n");
2154                   iAttributes[16] = 0;
2155                   iAttributes[17] = 0;
2156                   valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
2157                   if(!valid || !numFormats)
2158                   {
2159                      int iAttributes[] =
2160                      {
2161                         WGL_DRAW_TO_PBUFFER_ARB,GL_TRUE,
2162                         //WGL_DRAW_TO_BITMAP_ARB,GL_TRUE,
2163                         WGL_SUPPORT_OPENGL_ARB,GL_TRUE,
2164                         WGL_COLOR_BITS_ARB,24,
2165                         WGL_ALPHA_BITS_ARB,8,
2166                         WGL_DEPTH_BITS_ARB,16,
2167                         0,0
2168                      };
2169                      valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
2170                   }
2171                }
2172             }
2173             if(valid && numFormats)
2174             {
2175                wglMakeCurrent(null, null);
2176             }
2177          }
2178
2179          wglMakeCurrent( null, null );
2180          wglMakeCurrent( oglDisplay.hdc, oglDisplay.glrc );
2181          if(oglDisplay.hdc && oglDisplay.pBuffer)
2182             wglReleasePbufferDCARB(oglDisplay.pBuffer, oglDisplay.hdc);
2183
2184          wglDestroyPbufferARB(oglDisplay.pBuffer);
2185
2186          if(!useSingleGLContext)
2187             wglMakeCurrent( null, null );
2188
2189          if(oglDisplay.glrc)
2190             wglDeleteContext(oglDisplay.glrc);
2191
2192          oglDisplay.pBuffer = wglCreatePbufferARB(oglSystem.hdc, pixelFormat, width, height, attributes);
2193          oglDisplay.hdc = wglGetPbufferDCARB(oglDisplay.pBuffer);
2194          if((oglDisplay.glrc = wglCreateContext(oglDisplay.hdc)))
2195          {
2196             BITMAPINFO * info;
2197             HDC hdc = GetDC(display.window);
2198
2199             wglShareLists(oglSystem.glrc, oglDisplay.glrc);
2200             wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
2201
2202             //wglQueryPbufferARB(pBuffer, WGL_PBUFFER_WIDTH_ARB, &width);
2203             //wglQueryPbufferARB(pBuffer, WGL_PBUFFER_HEIGHT_ARB, &height);
2204
2205             // glDeleteBuffersARB(2, oglDisplay.imageBuffers);
2206
2207             if((info = (BITMAPINFO *)new0 byte[sizeof(BITMAPINFOHEADER)+sizeof(RGBQUAD)*256]))
2208             {
2209                HBITMAP newBitmap;
2210
2211                if(oglDisplay.memDC) DeleteDC(oglDisplay.memDC);
2212                oglDisplay.memDC = CreateCompatibleDC(hdc);
2213                SetMapMode(oglDisplay.memDC, MM_TEXT);
2214                info->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
2215                info->bmiHeader.biPlanes = 1;
2216                info->bmiHeader.biCompression = BI_RGB;
2217                info->bmiHeader.biBitCount = 32; //(uint16)GetDeviceCaps(hdc, BITSPIXEL);
2218                info->bmiHeader.biWidth = width;
2219                info->bmiHeader.biHeight = height;
2220                newBitmap = CreateDIBSection(hdc, info, DIB_RGB_COLORS, &oglDisplay.picture, null, 0);
2221                if(newBitmap)
2222                {
2223                   SelectObject(oglDisplay.memDC, newBitmap);
2224                   if(oglDisplay.memBitmap) DeleteObject(oglDisplay.memBitmap);
2225                   /*
2226                   {
2227                      PIXELFORMATDESCRIPTOR pfd = { 0 };
2228                      pfd.nSize = (short)sizeof(pfd);
2229                      pfd.nVersion = 1;
2230                      pfd.dwFlags = PFD_DRAW_TO_BITMAP | PFD_SUPPORT_OPENGL;
2231                      pfd.iPixelType = PFD_TYPE_RGBA;
2232                      pfd.cColorBits = 32;
2233                      //pfd.cAlphaBits = 8;
2234                      pfd.cDepthBits = 24;
2235                      pfd.iLayerType = PFD_MAIN_PLANE;
2236
2237                      oglDisplay.hdc = oglDisplay.memDC;
2238
2239                      pixelFormat = ChoosePixelFormat(oglSystem.hdc, &pfd);
2240                      DescribePixelFormat(oglDisplay.hdc, pixelFormat, sizeof(pfd), &pfd);
2241                      SetPixelFormat(oglDisplay.hdc, pixelFormat, &pfd);
2242
2243                      oglDisplay.glrc = wglCreateContext(oglDisplay.hdc);
2244                      wglShareLists(oglSystem.glrc, oglDisplay.glrc);
2245                      wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
2246                   }
2247                   */
2248                   /*
2249                   {
2250                      const int imageSize = width * height * 4;
2251
2252                      glGenBuffersARB(2, oglDisplay.imageBuffers);
2253
2254                      glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2255                      glBufferDataARB(GL_PIXEL_PACK_BUFFER_ARB, imageSize, null, GL_STREAM_READ);
2256                      // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2257                      // glBufferDataARB(GL_PIXEL_PACK_BUFFER_ARB, imageSize / 2, null, GL_STREAM_READ);
2258                   }
2259                   */
2260                   oglDisplay.memBitmap = newBitmap;
2261                   oglDisplay.stride = width;
2262
2263                   result = true;
2264                }
2265                delete info;
2266             }
2267             ReleaseDC(display.window, hdc);
2268          }
2269 #elif defined(__unix__) || defined(__APPLE__)
2270       #if defined(__ANDROID__) || defined(__ODROID__)
2271          result = true;
2272       #else
2273         int attrib[] =
2274         {
2275                 GLX_DOUBLEBUFFER,  True,
2276             GLX_DEPTH_SIZE,    1,
2277                 GLX_RED_SIZE,      8,
2278                 GLX_GREEN_SIZE,    8,
2279                 GLX_BLUE_SIZE,     8,
2280                 GLX_ALPHA_SIZE,    8,
2281                 GLX_STENCIL_SIZE,  1,
2282                 //GLX_DEPTH_SIZE,    24,
2283                 GLX_RENDER_TYPE,   GLX_RGBA_BIT,
2284                 GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT | GLX_WINDOW_BIT,
2285                 None
2286         };
2287
2288         int PBattrib[] =
2289         {
2290                 GLX_PBUFFER_WIDTH,   width,
2291                 GLX_PBUFFER_HEIGHT,  height,
2292                 GLX_LARGEST_PBUFFER, False,
2293             None
2294         };
2295
2296         // choose a pixel format that meets our minimum requirements
2297         int count = 0;
2298
2299         GLXFBConfig *config = glXChooseFBConfig(xGlobalDisplay, DefaultScreen(xGlobalDisplay), attrib, &count);
2300          if(config)
2301          {
2302             if(oglDisplay.pixmap)
2303             {
2304                XFreePixmap(xGlobalDisplay, oglDisplay.pixmap);
2305                oglDisplay.pixmap = None;
2306             }
2307             if(oglDisplay.shapePixmap)
2308             {
2309                XFreePixmap(xGlobalDisplay, oglDisplay.shapePixmap);
2310                oglDisplay.shapePixmap = None;
2311             }
2312
2313             // Free Shared Memory Pixmap
2314             if(oglDisplay.image)
2315             {
2316                if(oglDisplay.shminfoShape.shmid != -1)
2317                {
2318                   XShmDetach(xGlobalDisplay, &oglDisplay.shminfo);
2319                   if(oglDisplay.shminfo.shmaddr != (void *)-1)
2320                      shmdt(oglDisplay.shminfo.shmaddr);
2321                   shmctl(oglDisplay.shminfo.shmid, IPC_RMID, 0);
2322                }
2323                XDestroyImage(oglDisplay.image);
2324                oglDisplay.image = None;
2325             }
2326             if(oglDisplay.shapeImage)
2327             {
2328                if(oglDisplay.shminfoShape.shmid != -1)
2329                {
2330                   XShmDetach(xGlobalDisplay, &oglDisplay.shminfoShape);
2331                   if(oglDisplay.shminfoShape.shmaddr != (void *)-1)
2332                      shmdt(oglDisplay.shminfoShape.shmaddr);
2333                   shmctl(oglDisplay.shminfoShape.shmid, IPC_RMID, 0);
2334                }
2335                XDestroyImage(oglDisplay.shapeImage);
2336                oglDisplay.shapeImage = None;
2337             }
2338
2339             if(oglDisplay.windowPicture)
2340                XRenderFreePicture(xGlobalDisplay, oglDisplay.windowPicture);
2341             if(oglDisplay.pixmapPicture)
2342                XRenderFreePicture(xGlobalDisplay, oglDisplay.pixmapPicture);
2343
2344             if(oglDisplay.pixmap)
2345                XFreePixmap(xGlobalDisplay, oglDisplay.pixmap);
2346
2347             if(oglDisplay.glContext)
2348                   glXDestroyContext(xGlobalDisplay, oglDisplay.glContext);
2349             if(oglDisplay.pBuffer)
2350                glXDestroyPbuffer(xGlobalDisplay, oglDisplay.pBuffer);
2351
2352                 oglDisplay.pBuffer = glXCreatePbuffer(xGlobalDisplay, config[0], PBattrib);
2353             if(oglDisplay.pBuffer)
2354             {
2355                    oglDisplay.glContext = glXCreateNewContext(xGlobalDisplay, config[0], GLX_RGBA_TYPE, oglSystem.glContext, True);
2356                if(oglDisplay.glContext)
2357                {
2358                   glXMakeCurrent(xGlobalDisplay, None, null);
2359                   glXMakeCurrent(xGlobalDisplay, (GLXDrawable)display.window, oglDisplay.glContext);
2360
2361                   // Initialize Shared Memory Pixmap
2362                   oglDisplay.image = XShmCreateImage(xGlobalDisplay, DefaultVisual(xGlobalDisplay, DefaultScreen(xGlobalDisplay)), 32,
2363                      ZPixmap, null, &oglDisplay.shminfo, width, height);
2364                   if(oglDisplay.image)
2365                   {
2366                      oglDisplay.shminfo.shmid = shmget(IPC_PRIVATE,
2367                         oglDisplay.image->bytes_per_line * oglDisplay.image->height, IPC_CREAT|0777);
2368                      if(oglDisplay.shminfo.shmid != -1)
2369                      {
2370                         oglDisplay.shminfo.shmaddr = shmat(oglDisplay.shminfo.shmid, 0, 0);
2371                         if(oglDisplay.shminfo.shmaddr != (void *)-1)
2372                         {
2373                            oglDisplay.shminfo.readOnly = False;
2374                            if(XShmAttach(xGlobalDisplay, &oglDisplay.shminfo))
2375                            {
2376                               oglDisplay.pixmap = XShmCreatePixmap(xGlobalDisplay, (X11Window)display.window, oglDisplay.shminfo.shmaddr,
2377                                  &oglDisplay.shminfo, width, height, 32);
2378
2379                               // Initialize Shared Memory Shape Pixmap
2380                               oglDisplay.shapeImage = XShmCreateImage(xGlobalDisplay, DefaultVisual(xGlobalDisplay, DefaultScreen(xGlobalDisplay)), 1,
2381                                  ZPixmap, null, &oglDisplay.shminfoShape, width, height);
2382                               if(oglDisplay.shapeImage)
2383                               {
2384                                  oglDisplay.shminfoShape.shmid = shmget(IPC_PRIVATE,
2385                                     oglDisplay.shapeImage->bytes_per_line * oglDisplay.shapeImage->height, IPC_CREAT|0777);
2386                                  if(oglDisplay.shminfoShape.shmid != -1)
2387                                  {
2388                                     oglDisplay.shminfoShape.shmaddr = shmat(oglDisplay.shminfoShape.shmid, 0, 0);
2389                                     if(oglDisplay.shminfoShape.shmaddr != (void *)-1)
2390                                     {
2391                                        oglDisplay.shminfoShape.readOnly = False;
2392                                        if(XShmAttach(xGlobalDisplay, &oglDisplay.shminfoShape))
2393                                        {
2394                                           oglDisplay.shapePixmap = XShmCreatePixmap(xGlobalDisplay, (X11Window)display.window, oglDisplay.shminfoShape.shmaddr,
2395                                              &oglDisplay.shminfoShape, width, height, 1);
2396                                           //oglDisplay.shapePixmap = XCreatePixmap(xGlobalDisplay, (X11Window)display.window, width, height, 1);
2397
2398                                           {
2399                                              XRenderPictureAttributes attributes = { 0 };
2400                                              XRenderPictFormat * format = XRenderFindStandardFormat(xGlobalDisplay, /*PictStandardRGB24*/ PictStandardARGB32);
2401                                              #if !defined(__APPLE__) && !defined(__OLDX__)
2402                                              attributes.repeat = RepeatNormal;
2403                                              #else
2404                                              attributes.repeat = 1;
2405                                              #endif
2406                                              oglDisplay.pixmapPicture = XRenderCreatePicture(xGlobalDisplay, oglDisplay.pixmap, format, CPRepeat, &attributes);
2407                                              oglDisplay.windowPicture = XRenderCreatePicture(xGlobalDisplay, (X11Window)display.window, format, 0, &attributes);
2408                                              oglDisplay.shapePicture = XRenderCreatePicture(xGlobalDisplay, oglDisplay.shapePixmap,
2409                                                 XRenderFindStandardFormat(xGlobalDisplay, PictStandardA1), 0, &attributes);
2410                                           }
2411
2412                                           oglDisplay.picture = oglDisplay.shminfo.shmaddr;
2413                                           oglDisplay.stride = oglDisplay.image->bytes_per_line / 4;
2414
2415                                           result = true;
2416                                        }
2417                                     }
2418                                  }
2419                               }
2420                            }
2421                         }
2422                      }
2423                   }
2424                }
2425             }
2426             XFree(config);
2427          }
2428      #endif
2429 #endif
2430          CreateDisplay(display);
2431 #if defined(__WIN32__)
2432          wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
2433 #elif defined(__unix__) || defined(__APPLE__)
2434       #if defined(__ANDROID__) || defined(__ODROID__)
2435          width = eglWidth;
2436          height = eglHeight;
2437       #else
2438          glXMakeCurrent(xGlobalDisplay, (GLXDrawable)display.window, oglDisplay.glContext);
2439       #endif
2440 #endif
2441       }
2442       else
2443 #endif
2444          result = true;
2445       if(!result && display.alphaBlend)
2446       {
2447          printf("Alpha blending windows not supported on this display\n");
2448       }
2449       if(!result)
2450          return false;
2451
2452       result = false;
2453
2454       glViewport(0,0,width,height);
2455       glLoadIdentity();
2456       glOrtho(0,width,height,0,0.0,1.0);
2457       displayWidth = display.width = width;
2458       displayHeight = display.height = height;
2459
2460       if(!oglDisplay.flippingBuffer || oglDisplay.flipBufW < width || oglDisplay.flipBufH < height)
2461       {
2462          oglDisplay.flipBufW = width;
2463          oglDisplay.flipBufH = height;
2464 #ifdef _GLES
2465          result = true;
2466 #else
2467          oglDisplay.flippingBuffer = renew oglDisplay.flippingBuffer ColorAlpha [width * height];
2468 #endif
2469       }
2470       if(oglDisplay.flippingBuffer || !width || !height)
2471          result = true;
2472
2473       return result;
2474    }
2475
2476    void DisplayPosition(Display display, int x, int y)
2477    {
2478       OGLDisplay oglDisplay = display.driverData;
2479
2480       oglDisplay.x = x;
2481       oglDisplay.y = y;
2482    }
2483
2484    void SetPalette(Display display, ColorAlpha * palette, bool colorMatch)
2485    {
2486    }
2487
2488    void RestorePalette(Display display)
2489    {
2490    }
2491
2492    void StartUpdate(Display display)
2493    {
2494    }
2495
2496    void EndUpdate(Display display)
2497    {
2498    }
2499
2500    void Scroll(Display display, Box scroll, int x, int y, Extent dirty)
2501    {
2502    }
2503
2504    void Update(Display display, Box updateBox)
2505    {
2506 #if defined(__WIN32__) || defined(USEPBUFFER)
2507       OGLDisplay oglDisplay = display.driverData;
2508 #endif
2509       //Logf("DisplayScreen\n");
2510
2511       glFlush();
2512       glFinish();
2513 #if defined(__WIN32__) || defined(USEPBUFFER)
2514       if(display.alphaBlend)
2515       {
2516          glPixelStorei(GL_PACK_ALIGNMENT, 4);
2517          glPixelStorei(GL_PACK_ROW_LENGTH, oglDisplay.stride);
2518          glPixelStorei(GL_PACK_SKIP_ROWS, 0);
2519          glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
2520          glReadPixels(0,0,display.width,display.height,GL_BGRA_EXT,GL_UNSIGNED_BYTE, oglDisplay.picture);
2521
2522          {
2523 #if defined(__WIN32__)
2524             HDC hdc = GetDC(0);
2525             POINT point = { oglDisplay.x, oglDisplay.y};
2526             POINT srcPoint = { 0, 0 };
2527             BLENDFUNCTION blend = { 0 };
2528             SIZE size;
2529             size.cx = display.width;
2530             size.cy = display.height;
2531             blend.BlendOp = AC_SRC_OVER;
2532             blend.BlendFlags = 0;
2533             blend.SourceConstantAlpha = 255;
2534             blend.AlphaFormat = AC_SRC_ALPHA;
2535
2536             /*
2537             // Process partial images.  Mapping the buffer waits for
2538             // outstanding DMA transfers into the buffer to finish.
2539             glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2540             oglDisplay.pboMemory1 = (byte *)glMapBufferARB(GL_PIXEL_PACK_BUFFER_ARB, GL_READ_ONLY);
2541
2542             // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2543             // oglDisplay.pboMemory2 = (byte *)glMapBufferARB(GL_PIXEL_PACK_BUFFER_ARB,GL_READ_ONLY);
2544
2545
2546             memcpy(oglDisplay.picture, oglDisplay.pboMemory1, display.width * display.height * 4);
2547             //memcpy(oglDisplay.picture + display.width * display.height * 4 / 2, oglDisplay.pboMemory2, display.width * display.height * 4/ 2);
2548             */
2549
2550             UpdateLayeredWindow(display.window, hdc, &point, &size, oglDisplay.memDC, &srcPoint, 0, &blend, ULW_ALPHA);
2551             /*
2552
2553             // Unmap the image buffers
2554             glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2555             glUnmapBufferARB(GL_PIXEL_PACK_BUFFER_ARB);
2556
2557             // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2558             // glUnmapBufferARB(GL_PIXEL_PACK_BUFFER_ARB);
2559
2560             // Bind two different buffer objects and start the glReadPixels
2561             // asynchronously. Each call will return directly after
2562             // starting the DMA transfer.
2563             glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2564             glReadPixels(0, 0, display.width, display.height, GL_BGRA, GL_UNSIGNED_BYTE, 0);
2565
2566             // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2567             // glReadPixels(0, display.height/2, display.width, display.height/2, GL_BGRA, GL_UNSIGNED_BYTE, 0);
2568             */
2569
2570             ReleaseDC(0, hdc);
2571 #elif defined(__unix__) || defined(__APPLE__)
2572       #if defined(__ANDROID__) || defined(__ODROID__)
2573       #else
2574             XTransform transform =
2575             {
2576                {
2577                   { (int)(1.0f * (1<<16)), (int)(0.0f * (1<<16)),  (int)(0 * (1 << 16)) },
2578                   { (int)(0.0f),           (int)(-1.0f * (1<<16)), (int)(0 * (1<<16)) },
2579                   { (int)(0.0f * (1<<16)), (int)(0.0f * (1<<16)),  (int)(1.0f * (1<<16)) }
2580                }
2581             };
2582             XRenderSetPictureTransform(xGlobalDisplay, oglDisplay.pixmapPicture, &transform);
2583             XRenderComposite(xGlobalDisplay, PictOpSrc, oglDisplay.pixmapPicture, None, oglDisplay.shapePicture, 0, 0, 0, 0, 0, 0, display.width, display.height);
2584             XRenderComposite(xGlobalDisplay, PictOpSrc, oglDisplay.pixmapPicture, None, oglDisplay.windowPicture, 0, 0, 0, 0, 0, 0, display.width, display.height);
2585             #if !defined(__APPLE__) && !defined(__OLDX__)
2586             XShapeCombineMask(xGlobalDisplay, (X11Window)display.window, ShapeInput, 0, 0, oglDisplay.shapePixmap, ShapeSet);
2587             #else
2588             XShapeCombineMask(xGlobalDisplay, display.window, 2, 0, 0, oglDisplay.shapePixmap, ShapeSet);
2589             #endif
2590             XFlush(xGlobalDisplay);
2591      #endif
2592 #endif
2593          }
2594       }
2595       else
2596 #endif
2597       {
2598 #if defined(__WIN32__)
2599          //wglSwapLayerBuffers(oglDisplay.hdc,WGL_SWAP_MAIN_PLANE);
2600          SwapBuffers(oglDisplay.hdc);
2601 #elif defined(__unix__) || defined(__APPLE__)
2602       #if defined(__ANDROID__) || defined(__ODROID__)
2603          eglSwapBuffers(eglDisplay, eglSurface);
2604       #else
2605          glXSwapBuffers(xGlobalDisplay, (GLXDrawable)display.window);
2606       #endif
2607 #endif
2608       }
2609       //Logf("Out of DisplayScreen\n");
2610    }
2611
2612    void FreeBitmap(DisplaySystem displaySystem, Bitmap bitmap)
2613    {
2614       if(bitmap.driverData)
2615       {
2616          GLuint tex = (GLuint)(uintptr)bitmap.driverData;
2617          glDeleteTextures(1, &tex);
2618          bitmap.driverData = 0;
2619       }
2620       bitmap.driver = ((subclass(DisplayDriver))class(LFBDisplayDriver));
2621    }
2622
2623    bool AllocateBitmap(DisplaySystem displaySystem, Bitmap bitmap, int width, int height, int stride, PixelFormat format, bool allocatePalette)
2624    {
2625       OGLSystem oglSystem = displaySystem.driverData;
2626       bool result = false;
2627       Bitmap mipMap { };
2628       GLuint glBitmap = 0;
2629
2630       uint w = width, h = height;
2631       if(oglSystem.pow2textures)
2632       {
2633          w = pow2i(w);
2634          h = pow2i(h);
2635       }
2636       w = Min(w, oglSystem.maxTextureSize);
2637       h = Min(h, oglSystem.maxTextureSize);
2638
2639       glGenTextures(1, &glBitmap);
2640       glBindTexture(GL_TEXTURE_2D, glBitmap);
2641
2642       glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
2643
2644       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
2645       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
2646
2647       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
2648       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
2649
2650       glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
2651
2652       mipMap.Allocate(null, w, h, w, pixelFormatRGBA, false);
2653
2654       // glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2655       glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2656
2657       delete mipMap;
2658
2659       bitmap.driverData = (void *)(uintptr)glBitmap;
2660       bitmap.driver = displaySystem.driver;
2661       bitmap.width = w;
2662       bitmap.height = h;
2663
2664       result = true;
2665       return result;
2666    }
2667
2668    bool MakeDDBitmap(DisplaySystem displaySystem, Bitmap bitmap, bool mipMaps)
2669    {
2670       bool result = false;
2671       OGLSystem oglSystem = displaySystem.driverData;
2672
2673       // Pre process the bitmap... First make it 32 bit
2674       if(/*bitmap.pixelFormat == pixelFormatRGBA || */bitmap.Convert(null, pixelFormat888, null))
2675       {
2676          int c, level;
2677          uint w = bitmap.width, h = bitmap.height;
2678          GLuint glBitmap = 0;
2679          if(oglSystem.pow2textures)
2680          {
2681             w = pow2i(w);
2682             h = pow2i(h);
2683          }
2684          w = Min(w, oglSystem.maxTextureSize);
2685          h = Min(h, oglSystem.maxTextureSize);
2686
2687          if(mipMaps)
2688          {
2689             while(w * 2 < h) w *= 2;
2690             while(h * 2 < w) h *= 2;
2691          }
2692
2693          // Switch ARGB to RGBA
2694          //if(bitmap.format != pixelFormatRGBA)
2695          {
2696             for(c=0; c<bitmap.size; c++)
2697             {
2698                // ((ColorRGBA *)bitmap.picture)[c] = ((ColorAlpha *)bitmap.picture)[c];
2699                // TODO:
2700                ColorAlpha color = ((ColorAlpha *)bitmap.picture)[c];
2701                ((ColorRGBA *)bitmap.picture)[c] = ColorRGBA { color.color.r, color.color.g, color.color.b, color.a };
2702             }
2703          }
2704          bitmap.pixelFormat = pixelFormat888;
2705
2706          glGetError();
2707          glGenTextures(1, &glBitmap);
2708          if(glBitmap == 0)
2709          {
2710             //int error = glGetError();
2711             return false;
2712          }
2713
2714          glBindTexture(GL_TEXTURE_2D, glBitmap);
2715          glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
2716
2717          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, mipMaps ? GL_LINEAR_MIPMAP_LINEAR : GL_LINEAR);
2718          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
2719
2720          //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
2721
2722          //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
2723          //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
2724
2725          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
2726          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
2727
2728          glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
2729
2730          result = true;
2731
2732          for(level = 0; result && (w >= 1 || h >= 1); level++, w >>= 1, h >>= 1)
2733          {
2734             Bitmap mipMap;
2735             if(!w) w = 1;
2736             if(!h) h = 1;
2737             if(bitmap.width != w || bitmap.height != h)
2738             {
2739                mipMap = Bitmap { };
2740                if(mipMap.Allocate(null, w, h, w, bitmap.pixelFormat, false))
2741                {
2742                   Surface mipSurface = mipMap.GetSurface(0,0,null);
2743                   mipSurface.Filter(bitmap, 0,0,0,0, w, h, bitmap.width, bitmap.height);
2744                   delete mipSurface;
2745                }
2746                else
2747                {
2748                   result = false;
2749                   delete mipMap;
2750                }
2751             }
2752             else
2753                mipMap = bitmap;
2754
2755             if(result)
2756             {
2757                int error;
2758                //int width = 0;
2759                glGetError();
2760                // glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA8, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2761                glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2762                //printf("Calling glTexImage2D\n");
2763                //glGetTexLevelParameteriv(GL_TEXTURE_2D, level, GL_TEXTURE_WIDTH, &width);
2764                //printf("width = %d (Should be %d, %d)\n", width, w, h);
2765                if((error = glGetError()))
2766                {
2767                   //Logf("OpenGL Bitmap MakeDD error: %d...\n", error);
2768                   //printf("OpenGL Bitmap MakeDD error: %d...\n", error);
2769                   result = false;
2770                }
2771             }
2772             if(mipMap != bitmap)
2773                delete mipMap;
2774             if(!mipMaps) break;
2775          }
2776
2777          if(!bitmap.keepData)
2778             bitmap.driver.FreeBitmap(bitmap.displaySystem, bitmap);
2779          bitmap.driverData = (void *)(uintptr)glBitmap;
2780          bitmap.driver = displaySystem.driver;
2781
2782          if(!result)
2783             FreeBitmap(displaySystem, bitmap);
2784          else if(oglSystem.loadingFont)
2785          {
2786             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
2787             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
2788             oglSystem.loadingFont = false;
2789          }
2790       }
2791       return result;
2792    }
2793
2794    void ReleaseSurface(Display display, Surface surface)
2795    {
2796       glDisable(GL_SCISSOR_TEST);
2797       delete surface.driverData;
2798       surface.driverData = null;
2799    }
2800
2801    bool GetBitmapSurface(DisplaySystem displaySystem, Surface surface, Bitmap bitmap, int x, int y, Box clip)
2802    {
2803       return false;
2804    }
2805
2806    bool GetSurface(Display display, Surface surface, int x,int y, Box clip)
2807    {
2808       bool result = false;
2809       OGLSurface oglSurface = surface.driverData = OGLSurface { };
2810
2811       //Logf("GetSurface\n");
2812
2813       if(oglSurface)
2814       {
2815          if(displayWidth != display.width || displayHeight != display.height)
2816          {
2817             displayWidth = display.width;
2818             displayHeight = display.height;
2819
2820             glViewport(0,0,display.width,display.height);
2821             glLoadIdentity();
2822             glOrtho(0,display.width,display.height,0,0.0,1.0);
2823          }
2824
2825          surface.offset.x = x;
2826          surface.offset.y = y;
2827          surface.unclippedBox = surface.box = clip;
2828          oglSurface.bitmapMult[0] = 1;
2829          oglSurface.bitmapMult[1] = 1;
2830          oglSurface.bitmapMult[2] = 1;
2831          oglSurface.bitmapMult[3] = 1;
2832
2833          glEnable(GL_SCISSOR_TEST);
2834          glScissor(
2835             x+clip.left,
2836             (display.height) -(y+clip.bottom)-1,
2837             clip.right-clip.left+1,
2838             clip.bottom-clip.top+1);
2839          result = true;
2840       }
2841       return result;
2842    }
2843
2844    void Clip(Display display, Surface surface, Box clip)
2845    {
2846       Box box;
2847
2848       //Logf("Clip\n");
2849
2850       if(clip != null)
2851       {
2852          box = clip;
2853          box.Clip(surface.unclippedBox);
2854          surface.box = box;
2855       }
2856       else
2857          box = surface.box = surface.unclippedBox;
2858       box.left += surface.offset.x;
2859       box.top  += surface.offset.y;
2860       box.right+= surface.offset.x;
2861       box.bottom += surface.offset.y;
2862
2863       glScissor(
2864          box.left,display.height - box.bottom - 1,
2865          box.right-box.left+1, box.bottom-box.top+1);
2866    }
2867
2868    bool GrabScreen(Display display, Bitmap bitmap, int x, int y, unsigned int w, unsigned int h)
2869    {
2870       bool result = false;
2871       OGLDisplay oglDisplay = display.driverData;
2872       ColorAlpha * flippingBuffer = oglDisplay.flippingBuffer;
2873
2874       if(oglDisplay.flippingBuffer)
2875       {
2876          if(bitmap.pixelFormat != pixelFormat888 || bitmap.width < w || bitmap.height < h)
2877          {
2878             bitmap.Free();
2879             bitmap.Allocate(null, w,h,w, pixelFormat888, false);
2880          }
2881          if(bitmap)
2882          {
2883             uint row;
2884
2885             glPixelStorei(GL_PACK_ALIGNMENT, 4);
2886             glPixelStorei(GL_PACK_ROW_LENGTH, bitmap.stride);
2887             glPixelStorei(GL_PACK_SKIP_ROWS, 0);
2888             glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
2889             glReadPixels(x,display.height-h-y,w,h,GL_BGRA_EXT,GL_UNSIGNED_BYTE, flippingBuffer);
2890
2891             // Need a flip...
2892             for(row = 0; row<h; row++)
2893                CopyBytesBy4(((ColorAlpha *)bitmap.picture) + row * w, ((ColorAlpha *)flippingBuffer) + (h-row-1) * w, w);
2894             result = true;
2895          }
2896       }
2897       return result;
2898    }
2899
2900    void SetForeground(Display display, Surface surface, ColorAlpha color)
2901    {
2902       OGLSurface oglSurface = surface.driverData;
2903
2904       //Logf("SetForeground\n");
2905
2906       oglSurface.foreground[0] = color.color.r/255.0f;
2907       oglSurface.foreground[1] = color.color.g/255.0f;
2908       oglSurface.foreground[2] = color.color.b/255.0f;
2909       //oglSurface.foreground[3] = 1.0f;
2910       oglSurface.foreground[3] = color.a/255.0f;
2911
2912       //if(!oglSurface.foreground[3])printf("bug");
2913    }
2914
2915    void SetBackground(Display display, Surface surface, ColorAlpha color)
2916    {
2917       OGLSurface oglSurface = surface.driverData;
2918
2919       //Logf("SetBackground\n");
2920
2921       oglSurface.background[0] = color.color.r/255.0f;
2922       oglSurface.background[1] = color.color.g/255.0f;
2923       oglSurface.background[2] = color.color.b/255.0f;
2924       //oglSurface.background[3] = 1.0;
2925       oglSurface.background[3] = color.a/255.0f;
2926    }
2927
2928    void SetBlitTint(Display display, Surface surface, ColorAlpha color)
2929    {
2930       OGLSurface oglSurface = surface.driverData;
2931
2932       oglSurface.bitmapMult[0] = color.color.r/255.0f;
2933       oglSurface.bitmapMult[1] = color.color.g/255.0f;
2934       oglSurface.bitmapMult[2] = color.color.b/255.0f;
2935       oglSurface.bitmapMult[3] = color.a/255.0f;
2936    }
2937
2938    ColorAlpha GetPixel(Display display, Surface surface,int x,int y)
2939    {
2940       return 0;
2941    }
2942
2943    void PutPixel(Display display, Surface surface,int x,int y)
2944    {
2945       OGLSurface oglSurface = surface.driverData;
2946
2947       //Logf("PutPixel\n");
2948
2949       glColor4fv(oglSurface.foreground);
2950       glBegin(GL_POINTS);
2951       // glVertex2i(x+surface.offset.x, y+surface.offset.y);
2952       glVertex2f(x+surface.offset.x + 0.5f, y+surface.offset.y + 0.5f);
2953
2954       glEnd();
2955    }
2956
2957    void DrawLine(Display display, Surface surface, int _x1, int _y1, int _x2, int _y2)
2958    {
2959       OGLSurface oglSurface = surface.driverData;
2960       float x1 = _x1, x2 = _x2, y1 = _y1, y2 = _y2;
2961       if(_x1 == _x2)
2962       {
2963          if(_y2 >= _y1)
2964             y2 += 1;
2965          else
2966             y1 += 1;
2967       }
2968       else if(_y1 == _y2)
2969       {
2970          if(_x2 >= _x1)
2971             x2 += 1;
2972          else
2973             x1 += 1;
2974       }
2975       x1 += surface.offset.x;
2976       y1 += surface.offset.y;
2977       x2 += surface.offset.x;
2978       y2 += surface.offset.y;
2979
2980       //Logf("Line\n");
2981
2982       glColor4fv(oglSurface.foreground);
2983       glBegin(GL_LINES);
2984 #ifdef _GLES
2985       if(stippleEnabled)
2986       {
2987          glTexCoord2f(0.5f, 0);
2988          glVertex2f(x1 + 0.5f, y1 + 0.5f);
2989          glTexCoord2f(Max(x2-x1, y2-y1) + 0.5f, 0);
2990          glVertex2f(x2 + 0.5f, y2 + 0.5f);
2991       }
2992       else
2993 #endif
2994       {
2995          /*
2996          glVertex2i(x1, y1);
2997          glVertex2i(x2, y2);
2998          */
2999          glVertex2f(x1 + 0.5f, y1 + 0.5f);
3000          glVertex2f(x2 + 0.5f, y2 + 0.5f);
3001       }
3002
3003       glEnd();
3004    }
3005
3006    void Rectangle(Display display, Surface surface,int x1,int y1,int x2,int y2)
3007    {
3008       OGLSurface oglSurface = surface.driverData;
3009       x1 += surface.offset.x;
3010       y1 += surface.offset.y;
3011       x2 += surface.offset.x;
3012       y2 += surface.offset.y;
3013
3014       //Logf("Rectangle\n");
3015
3016       glColor4fv(oglSurface.foreground);
3017 #ifdef _GLES
3018       if(stippleEnabled)
3019       {
3020          glBegin(GL_LINES);
3021
3022          glTexCoord2f(0.5f, 0);
3023          glVertex2f(x1 + 0.5f, y1 + 0.5f);
3024          glTexCoord2f(y2-y1 + 0.5f, 0);
3025          glVertex2f(x1 + 0.5f, y2 + 0.5f);
3026
3027          glTexCoord2f(0.5f, 0);
3028          glVertex2f(x1 + 0.5f, y2 + 0.5f);
3029          glTexCoord2f(x2 - x1 + 0.5f, 0);
3030          glVertex2f(x2 + 0.5f, y2 + 0.5f);
3031
3032          glTexCoord2f(0.5f, 0);
3033          glVertex2f(x2 + 0.5f, y2 + 0.5f);
3034          glTexCoord2f(y1 - y2 + 0.5f, 0);
3035          glVertex2f(x2 + 0.5f, y1 + 0.5f);
3036
3037          glTexCoord2f(0.5f, 0);
3038          glVertex2f(x2 + 0.5f, y1 + 0.5f);
3039          glTexCoord2f(x1 - x2 + 0.5f, 0);
3040          glVertex2f(x1 + 0.5f, y1 + 0.5f);
3041       }
3042       else
3043 #endif
3044       {
3045          glBegin(GL_LINE_LOOP);
3046          /*
3047          glVertex2i(x1, y1);
3048          glVertex2i(x1, y2);
3049          glVertex2i(x2, y2);
3050          glVertex2i(x2, y1);
3051          */
3052          glVertex2f(x1 + 0.5f, y1 + 0.5f);
3053          glVertex2f(x1 + 0.5f, y2 + 0.5f);
3054          glVertex2f(x2 + 0.5f, y2 + 0.5f);
3055          glVertex2f(x2 + 0.5f, y1 + 0.5f);
3056       }
3057       glEnd();
3058    }
3059
3060    void Area(Display display, Surface surface,int x1,int y1,int x2,int y2)
3061    {
3062       OGLSurface oglSurface = surface.driverData;
3063       //Logf("Area\n");
3064
3065       glColor4fv(oglSurface.background);
3066       glRecti(x1+surface.offset.x, y1+surface.offset.y,
3067               x2+surface.offset.x + 1, y2+surface.offset.y + 1);
3068
3069       /*
3070       glRectf(x1+surface.offset.x, y1+surface.offset.y,
3071               x2+surface.offset.x + 1, y2+surface.offset.y + 1);
3072       */
3073    }
3074
3075    void Clear(Display display, Surface surface, ClearType type)
3076    {
3077       OGLDisplay oglDisplay = display.driverData;
3078       OGLSurface oglSurface = surface.driverData;
3079
3080       //Logf("Clear\n");
3081       if(type != depthBuffer)
3082          glClearColor(oglSurface.background[0], oglSurface.background[1], oglSurface.background[2], oglSurface.background[3]);
3083       if(type != colorBuffer && !oglDisplay.depthWrite)
3084       {
3085          glDepthMask((byte)bool::true);
3086       }
3087       glClear(((type != depthBuffer) ? GL_COLOR_BUFFER_BIT : 0) |
3088               ((type != colorBuffer) ? GL_DEPTH_BUFFER_BIT : 0));
3089       if(type != colorBuffer && !oglDisplay.depthWrite)
3090       {
3091          glDepthMask((byte)bool::false);
3092       }
3093    }
3094
3095    bool ConvertBitmap(DisplaySystem displaySystem, Bitmap bitmap, PixelFormat format, ColorAlpha * palette)
3096    {
3097       return true;
3098    }
3099
3100    void Blit(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h)
3101    {
3102       OGLSurface oglSurface = surface.driverData;
3103
3104 #if !defined(__OLDX__)
3105          // WHY DO WE HAVE GL_ONE HERE ?
3106          /*if(glBlendFuncSeparate && !oglSurface.writingText)
3107             glBlendFuncSeparate(GL_ONE, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
3108 #endif
3109
3110       if(!oglSurface.writingText)
3111       {
3112          // glTranslatef(-0.375f, -0.375f, 0.0f);
3113          glEnable(GL_TEXTURE_2D);
3114          glColor4fv(oglSurface.bitmapMult);
3115       }
3116       else if(oglSurface.xOffset)
3117          glTranslated(oglSurface.xOffset / 64.0/*-0.375*/, 0.0, 0.0);
3118
3119       glBindTexture(GL_TEXTURE_2D, (GLuint)(uintptr)bitmap.driverData);
3120       glBegin(GL_QUADS);
3121
3122       if(h < 0)
3123       {
3124          glTexCoord2f((float)sx/ bitmap.width, (float)(sy-h)/ bitmap.height);
3125          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
3126          glTexCoord2f((float)(sx+w) / bitmap.width, (float)(sy-h)/ bitmap.height);
3127          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
3128          glTexCoord2f((float)(sx+w)/ bitmap.width, (float)sy/ bitmap.height);
3129          glVertex2i(dx+w+surface.offset.x, dy-h+surface.offset.y);
3130          glTexCoord2f((float)sx / bitmap.width, (float)sy/ bitmap.height);
3131          glVertex2i(dx+surface.offset.x, dy-h+surface.offset.y);
3132       }
3133       else
3134       {
3135          /*
3136          glTexCoord2f((float)sx / bitmap.width, (float)sy/ bitmap.height);
3137          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
3138          glTexCoord2f((float)(sx+w)/ bitmap.width, (float)sy/ bitmap.height);
3139          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
3140          glTexCoord2f((float)(sx+w) / bitmap.width, (float)(sy+h)/ bitmap.height);
3141          glVertex2i(dx+w+surface.offset.x, dy+h+surface.offset.y);
3142          glTexCoord2f((float)sx/ bitmap.width, (float)(sy+h)/ bitmap.height);
3143          glVertex2i(dx+surface.offset.x, dy+h+surface.offset.y);
3144          */
3145
3146          glTexCoord2f((float)sx / bitmap.width, (float)sy/ bitmap.height);
3147          glVertex2f((float)dx+surface.offset.x, (float)dy+surface.offset.y);
3148          glTexCoord2f((float)(sx+w)/ bitmap.width, (float)sy/ bitmap.height);
3149          glVertex2f((float)dx+w+surface.offset.x, (float)dy+surface.offset.y);
3150          glTexCoord2f((float)(sx+w) / bitmap.width, (float)(sy+h)/ bitmap.height);
3151          glVertex2f((float)dx+w+surface.offset.x, (float)dy+h+surface.offset.y);
3152          glTexCoord2f((float)sx/ bitmap.width, (float)(sy+h)/ bitmap.height);
3153          glVertex2f((float)dx+surface.offset.x, (float)dy+h+surface.offset.y);
3154       }
3155       glEnd();
3156
3157       if(!oglSurface.writingText)
3158       {
3159          glDisable(GL_TEXTURE_2D);
3160
3161          //glTranslate(0.375, 0.375, 0.0);
3162       }
3163       else if(oglSurface.xOffset)
3164          glTranslated(-oglSurface.xOffset / 64.0/*+0.375*/, 0.0, 0.0);
3165
3166 #if !defined(__OLDX__)
3167          /*if(glBlendFuncSeparate && !oglSurface.writingText)
3168             glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
3169 #endif
3170    }
3171
3172    void Stretch(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
3173    {
3174       OGLSurface oglSurface = surface.driverData;
3175
3176       //glTranslate(-0.375, -0.375, 0.0);
3177
3178       //Logf("Stretch\n");
3179
3180 #if !defined(__OLDX__)
3181       /*if(glBlendFuncSeparate)
3182          glBlendFuncSeparate(GL_ONE, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
3183 #endif
3184
3185       glEnable(GL_TEXTURE_2D);
3186       glBindTexture(GL_TEXTURE_2D, (GLuint)(uintptr)bitmap.driverData);
3187
3188       glColor4fv(oglSurface.bitmapMult);
3189
3190       glBegin(GL_QUADS);
3191
3192       if(h < 0)
3193       {
3194          glTexCoord2f((float)(sx)/ bitmap.width, (float)(sy+sh)/ bitmap.height);
3195          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
3196
3197          glTexCoord2f((float)(sx+sw) / bitmap.width, (float)(sy+sh)/ bitmap.height);
3198          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
3199
3200          glTexCoord2f((float)(sx+sw)/ bitmap.width, (float)(sy)/ bitmap.height);
3201          glVertex2i(dx+w+surface.offset.x, dy-h+surface.offset.y);
3202
3203          glTexCoord2f((float)(sx) / bitmap.width, (float)(sy)/ bitmap.height);
3204          glVertex2i(dx+surface.offset.x, dy-h+surface.offset.y);
3205       }
3206       else
3207       {
3208          glTexCoord2f((float)(sx) / bitmap.width, (float)(sy)/ bitmap.height);
3209          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
3210
3211          glTexCoord2f((float)(sx+sw)/ bitmap.width, (float)(sy)/ bitmap.height);
3212          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
3213
3214          glTexCoord2f((float)(sx+sw) / bitmap.width, (float)(sy+sh)/ bitmap.height);
3215          glVertex2i(dx+w+surface.offset.x, dy+h+surface.offset.y);
3216
3217          glTexCoord2f((float)(sx)/ bitmap.width, (float)(sy+sh)/ bitmap.height);
3218          glVertex2i(dx+surface.offset.x, dy+h+surface.offset.y);
3219       }
3220
3221       glEnd();
3222
3223       glDisable(GL_TEXTURE_2D);
3224
3225       //glTranslate(0.375, 0.375, 0.0);
3226 #if !defined(__OLDX__)
3227       /*if(glBlendFuncSeparate)
3228          glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
3229 #endif
3230
3231    }
3232
3233    void Filter(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
3234    {
3235       Stretch(display, surface, bitmap, dx, dy, sx, sy, w, h, sw, sh);
3236    }
3237
3238    void StretchDI(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
3239    {
3240       float s2dw,s2dh,d2sw,d2sh;
3241       //bool flipX = false, flipY = false;
3242
3243       //Logf("StretchDI\n");
3244
3245       if(Sgn(w) != Sgn(sw))
3246       {
3247          w = Abs(w);
3248          sw = Abs(sw);
3249          //flipX = true;
3250       }
3251       if(Sgn(h) != Sgn(sh))
3252       {
3253          h = Abs(h);
3254          sh = Abs(sh);
3255          //flipY = true;
3256       }
3257
3258       s2dw=(float)w / sw;
3259       s2dh=(float)h / sh;
3260       d2sw=(float)sw / w;
3261       d2sh=(float)sh / h;
3262
3263       //Clip against the edges of the source
3264       if(sx<0)
3265       {
3266          dx+=(int)((0-sx) * s2dw);
3267          w-=(int)((0-sx) * s2dw);
3268          sw-=0-sx;
3269          sx=0;
3270       }
3271       if(sy<0)
3272       {
3273          dy+=(int)((0-sy) * s2dh);
3274          h-=(int)((0-sy) * s2dh);
3275
3276          sh-=0-sy;
3277          sy=0;
3278       }
3279       if(sx+sw>bitmap.width-1)
3280       {
3281          w-=(int)((sx+sw-(bitmap.width-1)-1)*s2dw);
3282          sw-=sx+sw-(bitmap.width-1)-1;
3283       }
3284       if(sy+sh>(bitmap.height-1))
3285       {
3286          h-=(int)((sy+sh-(bitmap.height-1)-1)*s2dh);
3287          sh-=sy+sh-(bitmap.height-1)-1;
3288       }
3289       //Clip against the edges of the surfaceination
3290       if(dx<surface.box.left)
3291       {
3292          //if(!flip)
3293          sx+=(int)((surface.box.left-dx)*d2sw);
3294          sw-=(int)((surface.box.left-dx)*d2sw);
3295          w-=surface.box.left-dx;
3296          dx=surface.box.left;
3297       }
3298       if(dy<surface.box.top)
3299       {
3300          sy+=(int)((surface.box.top-dy)*d2sh);
3301          sh-=(int)((surface.box.top-dy)*d2sh);
3302          h-=surface.box.top-dy;
3303          dy=surface.box.top;
3304       }
3305       if(dx+w>surface.box.right)
3306       {
3307          //if(flip) sx+=(int)((dx+w-surface.box.right-1)*d2sw);
3308          sw-=(int)((dx+w-surface.box.right-1)*d2sw);
3309          w-=dx+w-surface.box.right-1;
3310       }
3311       if(dy+h>surface.box.bottom)
3312       {
3313          sh-=(int)((dy+h-surface.box.bottom-1)*d2sh);
3314          h-=dy+h-surface.box.bottom-1;
3315       }
3316       if((w<=0)||(h<=0)||(sw<=0)||(sh<=0)) return;
3317
3318       dx += surface.offset.x;
3319       dy += surface.offset.y;
3320
3321       if(bitmap.pixelFormat == pixelFormat888 && !bitmap.paletteShades)
3322       {
3323          glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
3324          glPixelStorei(GL_UNPACK_ROW_LENGTH, bitmap.stride);
3325          glPixelStorei(GL_UNPACK_SKIP_PIXELS, sx);
3326          glPixelStorei(GL_UNPACK_SKIP_ROWS, sy);
3327          glRasterPos2d(dx,dy);
3328          //glPixelZoom(flipX ? -s2dw : s2dw, flipY ? s2dh : -s2dh);
3329          glPixelZoom(s2dw, -s2dh);
3330          glDrawPixels(sw,sh,GL_BGRA_EXT,GL_UNSIGNED_BYTE, bitmap.picture);
3331          glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
3332          glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
3333          glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
3334          glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
3335       }
3336    }
3337
3338    void BlitDI(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h)
3339    {
3340       //Logf("BlitDI\n");
3341
3342       //Clip against the edges of the source
3343       if(sx<0)
3344       {
3345          dx+=-sx;
3346          w-=-sx;
3347          sx=0;
3348       }
3349       if(sy<0)
3350       {
3351          dy+=0-sy;
3352          h-=0-sy;
3353          sy=0;
3354       }
3355       if(sx+w>bitmap.width-1)
3356          w-=sx+w-(bitmap.width-1)-1;
3357       if(sy+h>bitmap.height-1)
3358          h-=sy+h-(bitmap.height-1)-1;
3359       //Clip against the edges of the surfaceination
3360       if(dx<surface.box.left)
3361       {
3362          //if(!flip)
3363          sx+=surface.box.left-dx;
3364          w-=surface.box.left-dx;
3365          dx=surface.box.left;
3366       }
3367       if(dy<surface.box.top)
3368       {
3369          sy+=surface.box.top-dy;
3370          h-=surface.box.top-dy;
3371          dy=surface.box.top;
3372       }
3373       if(dx+w>surface.box.right)
3374       {
3375          //if(flip) sx+=dx+w-surface.box.right-1;
3376          w-=dx+w-surface.box.right-1;
3377       }
3378       if(dy+h>surface.box.bottom)
3379          h-=dy+h-surface.box.bottom-1;
3380       if((w<=0)||(h<=0))
3381          return;
3382
3383       dx += surface.offset.x;
3384       dy += surface.offset.y;
3385
3386       if(bitmap.pixelFormat == pixelFormat888 && !bitmap.paletteShades)
3387       {
3388          glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
3389          glPixelStorei(GL_UNPACK_ROW_LENGTH, bitmap.stride);
3390          glPixelStorei(GL_UNPACK_SKIP_PIXELS, sx);
3391          glPixelStorei(GL_UNPACK_SKIP_ROWS, sy);
3392          glRasterPos2d(dx,dy);
3393          glPixelZoom(1,-1);
3394          glDrawPixels(w,h,GL_BGRA_EXT,GL_UNSIGNED_BYTE, bitmap.picture);
3395          glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
3396          glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
3397          glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
3398          glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
3399       }
3400    }
3401
3402    void FilterDI(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
3403    {
3404       StretchDI(display, surface, bitmap, dx, dy, sx, sy, w, h, sw, sh);
3405    }
3406
3407    void UnloadFont(DisplaySystem displaySystem, Font font)
3408    {
3409       ((subclass(DisplayDriver))class(LFBDisplayDriver)).UnloadFont(displaySystem, font);
3410    }
3411
3412    Font LoadFont(DisplaySystem displaySystem, const char * faceName, float size, FontFlags flags)
3413    {
3414       Font font;
3415       OGLSystem oglSystem = displaySystem.driverData;
3416       oglSystem.loadingFont = true;
3417       font = ((subclass(DisplayDriver))class(LFBDisplayDriver)).LoadFont(displaySystem, faceName, size, flags);
3418       return font;
3419    }
3420
3421    void FontExtent(DisplaySystem displaySystem, Font font, const char * text, int len, int * width, int * height)
3422    {
3423       ((subclass(DisplayDriver))class(LFBDisplayDriver)).FontExtent(displaySystem, font, text, len, width, height);
3424    }
3425
3426    void WriteText(Display display, Surface surface, int x, int y, const char * text, int len)
3427    {
3428       OGLSurface oglSurface = surface.driverData;
3429       OGLSystem oglSystem = display.displaySystem.driverData;
3430       oglSystem.loadingFont = true;
3431
3432       //glTranslated(-0.375, -0.375, 0.0);
3433
3434       //Logf("Blit\n");
3435
3436       if(surface.textOpacity)
3437       {
3438          int w, h;
3439          FontExtent(display.displaySystem, surface.font, text, len, &w, &h);
3440          display.displaySystem.driver.Area(display, surface,x,y,x+w-1,y+h-1);
3441       }
3442
3443       oglSurface.writingText = true;
3444
3445       glEnable(GL_TEXTURE_2D);
3446       glColor4fv(oglSurface.foreground);
3447
3448       ((subclass(DisplayDriver))class(LFBDisplayDriver)).WriteText(display, surface, x, y, text, len);
3449       oglSurface.writingText = false;
3450       oglSystem.loadingFont = false;
3451
3452       glDisable(GL_TEXTURE_2D);
3453
3454       //glTranslated(0.375, 0.375, 0.0);
3455    }
3456
3457    void TextFont(Display display, Surface surface, Font font)
3458    {
3459       ((subclass(DisplayDriver))class(LFBDisplayDriver)).TextFont(display, surface, font);
3460    }
3461
3462    void TextOpacity(Display display, Surface surface, bool opaque)
3463    {
3464       OGLSurface oglSurface = surface.driverData;
3465       oglSurface.opaqueText = opaque;
3466    }
3467
3468    void TextExtent(Display display, Surface surface, const char * text, int len, int * width, int * height)
3469    {
3470       OGLSurface oglSurface = surface.driverData;
3471       OGLSystem oglSystem = display.displaySystem.driverData;
3472       oglSystem.loadingFont = true;
3473       FontExtent(display.displaySystem, oglSurface.font, text, len, width, height);
3474       oglSystem.loadingFont = false;
3475    }
3476
3477    void DrawingChar(Display display, Surface surface, char character)
3478    {
3479
3480    }
3481
3482    void LineStipple(Display display, Surface surface, uint32 stipple)
3483    {
3484       //Logf("Stipple\n");
3485
3486       if(stipple)
3487       {
3488 #if defined(_GLES)
3489          stippleEnabled = true;
3490          glesLineStipple(1, (uint16)stipple);
3491 #else
3492          glLineStipple(1, (uint16)stipple);
3493          glEnable(GL_LINE_STIPPLE);
3494 #endif
3495       }
3496       else
3497       {
3498 #if defined(_GLES)
3499          stippleEnabled = false;
3500          glMatrixMode(GL_TEXTURE);
3501          glLoadIdentity();
3502          glMatrixMode(GL_PROJECTION);
3503          glDisable(GL_TEXTURE_2D);
3504 #else
3505          glDisable(GL_LINE_STIPPLE);
3506 #endif
3507       }
3508    }
3509 #if !defined(ECERE_NO3D) && !defined(ECERE_VANILLA)
3510    void SetRenderState(Display display, RenderState state, uint value)
3511    {
3512       OGLDisplay oglDisplay = display.driverData;
3513       //Logf("RenderState\n");
3514
3515       switch(state)
3516       {
3517          case antiAlias:
3518             if(value)
3519                glEnable(GL_MULTISAMPLE_ARB);
3520             else
3521                glDisable(GL_MULTISAMPLE_ARB);
3522             break;
3523          case fillMode:
3524 #if !defined(_GLES)
3525             glPolygonMode(GL_FRONT_AND_BACK, ((FillModeValue)value == solid) ? GL_FILL : GL_LINE);
3526 #endif
3527             break;
3528          case depthTest:
3529             if(value) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
3530             break;
3531          case depthWrite:
3532             if(value) glDepthMask((byte)bool::true); else glDepthMask((byte)bool::false);
3533             oglDisplay.depthWrite = (bool)value;
3534             break;
3535          case fogColor:
3536          {
3537             float color[4] = { ((Color)value).r/255.0f, ((Color)value).g/255.0f, ((Color)value).b/255.0f, 1.0f };
3538             glFogfv(GL_FOG_COLOR, (float *)&color);
3539             break;
3540          }
3541          case fogDensity:
3542             glFogf(GL_FOG_DENSITY, (float)(RenderStateFloat { ui = value }.f * nearPlane));
3543             break;
3544          case blend:
3545             if(value) glEnable(GL_BLEND); else glDisable(GL_BLEND);
3546             break;
3547          case ambient:
3548          {
3549             float ambient[4] = { ((Color)value).r/255.0f, ((Color)value).g/255.0f, ((Color)value).b/255.0f, 1.0f };
3550             glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambient);
3551             break;
3552          }
3553          case alphaWrite:
3554          {
3555             if(value) glColorMask(1,1,1,1); else glColorMask(1,1,1,0);
3556             break;
3557          }
3558          case vSync:
3559          {
3560 #if defined(__WIN32__)
3561             wglSwapIntervalEXT(value ? 1 : 0);
3562 #endif
3563             break;
3564          }
3565       }
3566    }
3567
3568    void SetLight(Display display, int id, Light light)
3569    {
3570       //Logf("SetLight\n");
3571
3572       if(light != null)
3573       {
3574          Object lightObject = light.lightObject;
3575          float position[4] = { 0, 0, 0, 0 };
3576          float color[4] = { 0, 0, 0, 1 };
3577
3578          glEnable(GL_LIGHT0 + id);
3579          /*
3580          glLightfv(GL_LIGHT0 + id, GL_DIFFUSE, (float *)&light.diffuse);
3581          glLightfv(GL_LIGHT0 + id, GL_AMBIENT, (float *)&light.ambient);
3582          glLightfv(GL_LIGHT0 + id, GL_SPECULAR,(float *)&light.specular);
3583          */
3584
3585          if(!light.multiplier) light.multiplier = 1.0f;
3586
3587          color[0] = light.diffuse.r * light.multiplier;
3588          color[1] = light.diffuse.g * light.multiplier;
3589          color[2] = light.diffuse.b * light.multiplier;
3590          glLightfv(GL_LIGHT0 + id, GL_DIFFUSE, color);
3591
3592          color[0] = light.ambient.r * light.multiplier;
3593          color[1] = light.ambient.g * light.multiplier;
3594          color[2] = light.ambient.b * light.multiplier;
3595          glLightfv(GL_LIGHT0 + id, GL_AMBIENT, color);
3596          color[0] = light.specular.r * light.multiplier;
3597          color[1] = light.specular.g * light.multiplier;
3598          color[2] = light.specular.b * light.multiplier;
3599          glLightfv(GL_LIGHT0 + id, GL_SPECULAR,color);
3600
3601          if(lightObject)
3602          {
3603             Vector3D positionVector;
3604             if(light.flags.spot)
3605             {
3606                if(lightObject.flags.root || !lightObject.parent)
3607                {
3608                   positionVector = lightObject.transform.position;
3609                   positionVector.Subtract(positionVector, display.display3D.camera.cPosition);
3610                }
3611                else
3612                {
3613                   positionVector.MultMatrix(lightObject.transform.position, lightObject.parent.matrix);
3614                   if(display.display3D.camera)
3615                      positionVector.Subtract(positionVector, display.display3D.camera.cPosition);
3616                }
3617                position[3] = 1;
3618             }
3619             else
3620             {
3621                if(!light.direction.x && !light.direction.y && !light.direction.z)
3622                {
3623                   Vector3Df vector { 0,0,-1 };
3624                   Matrix mat;
3625                   mat.RotationQuaternion(light.orientation);
3626                   positionVector.MultMatrixf(vector, mat);
3627                }
3628                else
3629                {
3630                   positionVector = light.direction;
3631                   position[3] = 1;
3632                }
3633             }
3634
3635             position[0] = (float)positionVector.x;
3636             position[1] = (float)positionVector.y;
3637             position[2] = (float)positionVector.z;
3638
3639             glLightfv(GL_LIGHT0 + id, GL_POSITION, position);
3640
3641             /*
3642             // Display Light Position
3643             glDisable(GL_LIGHTING);
3644             glDisable(GL_DEPTH_TEST);
3645             glColor3f(1,1,1);
3646             glPointSize(10);
3647             glBegin(GL_POINTS);
3648             glVertex3fv(position);
3649             glEnd();
3650             glEnable(GL_DEPTH_TEST);
3651             glEnable(GL_LIGHTING);
3652
3653
3654             // Display Target
3655             if(lightObject.flags.root || !lightObject.parent)
3656             {
3657                positionVector = light.target.transform.position;
3658                positionVector.Subtract(positionVector, display.camera.cPosition);
3659             }
3660             else
3661             {
3662                positionVector.MultMatrix(light.target.transform.position,
3663                   lightObject.light.target.parent.matrix);
3664                positionVector.Subtract(positionVector, display.camera.cPosition);
3665             }
3666
3667             position[0] = positionVector.x;
3668             position[1] = positionVector.y;
3669             position[2] = positionVector.z;
3670
3671             glDisable(GL_LIGHTING);
3672             glDisable(GL_DEPTH_TEST);
3673             glColor3f(1,1,0);
3674             glPointSize(10);
3675             glBegin(GL_POINTS);
3676             glVertex3fv(position);
3677             glEnd();
3678             glEnable(GL_DEPTH_TEST);
3679             glEnable(GL_LIGHTING);
3680             */
3681
3682             if(light.flags.attenuation)
3683             {
3684                glLightf(GL_LIGHT0 + id, GL_CONSTANT_ATTENUATION, light.Kc);
3685                glLightf(GL_LIGHT0 + id, GL_LINEAR_ATTENUATION, light.Kl);
3686                glLightf(GL_LIGHT0 + id, GL_QUADRATIC_ATTENUATION, light.Kq);
3687             }
3688
3689             if(light.flags.spot)
3690             {
3691                float exponent = 0;
3692                #define MAXLIGHT  0.9
3693                float direction[4] = { (float)light.direction.x, (float)light.direction.y, (float)light.direction.z, 1 };
3694                // Figure out exponent out of the hot spot
3695                exponent = (float)(log(MAXLIGHT) / log(cos((light.hotSpot / 2))));
3696
3697                glLightfv(GL_LIGHT0 + id, GL_SPOT_DIRECTION, direction);
3698                glLightf(GL_LIGHT0 + id, GL_SPOT_CUTOFF, (float)(light.fallOff / 2));
3699                glLightf(GL_LIGHT0 + id, GL_SPOT_EXPONENT, exponent);
3700             }
3701          }
3702          else
3703          {
3704
3705             Vector3Df vector { 0,0,-1 };
3706             Vector3Df direction;
3707             Matrix mat;
3708
3709             mat.RotationQuaternion(light.orientation);
3710             direction.MultMatrix(vector, mat);
3711
3712             position[0] = direction.x;
3713             position[1] = direction.y;
3714             position[2] = direction.z;
3715
3716             glLightfv(GL_LIGHT0 + id, GL_POSITION, position);
3717          }
3718       }
3719       else
3720          glDisable(GL_LIGHT0 + id);
3721    }
3722
3723    void SetCamera(Display display, Surface surface, Camera camera)
3724    {
3725       OGLDisplay oglDisplay = display.driverData;
3726       //Logf("SetCamera\n");
3727
3728       if(camera)
3729       {
3730          int left = surface.box.left + surface.offset.x;
3731          int top = surface.box.top  + surface.offset.y;
3732          int right = surface.box.right + surface.offset.x;
3733          int bottom = surface.box.bottom + surface.offset.y;
3734          float origX = surface.offset.x + camera.origin.x;
3735          float origY = surface.offset.y + camera.origin.y;
3736          int x = left;
3737          int y = display.height - bottom - 1;
3738          int w = right - left + 1;
3739          int h = bottom - top + 1;
3740
3741          // *** ViewPort ***
3742          glViewport(x, y, w, h);
3743
3744          // *** Projection Matrix ***
3745          if(!display.display3D.camera)
3746             glPushMatrix();
3747          else
3748             glMatrixMode(GL_PROJECTION);
3749          if(display.display3D.collectingHits)
3750          {
3751             float pickX = display.display3D.pickX + surface.offset.x;
3752             float pickY = display.height - (display.display3D.pickY + surface.offset.y) - 1;
3753             Matrix pickMatrix
3754             {
3755                {
3756                   w / display.display3D.pickWidth, 0, 0, 0,
3757                   0, h / display.display3D.pickHeight, 0, 0,
3758                   0, 0, 1, 0,
3759                   (w + 2.0f * (x - pickX)) / display.display3D.pickWidth,
3760                   (h + 2.0f * (y - pickY)) / display.display3D.pickHeight, 0, 1
3761                }
3762             };
3763             glLoadMatrixd(pickMatrix.array);
3764          }
3765          else
3766             glLoadIdentity();
3767          glFrustum(
3768             (left   - origX) * camera.zMin / camera.focalX,
3769             (right  - origX) * camera.zMin / camera.focalX,
3770             (bottom - origY) * camera.zMin / camera.focalY,
3771             (top    - origY) * camera.zMin / camera.focalY,
3772             camera.zMin, camera.zMax);
3773
3774          glDisable(GL_BLEND);
3775
3776          // *** Z Inverted Identity Matrix ***
3777          glMatrixMode(GL_MODELVIEW);
3778          if(!display.display3D.camera)
3779             glPushMatrix();
3780
3781          glLoadIdentity();
3782
3783          glScaled(1.0/nearPlane, 1.0/nearPlane, -1.0/nearPlane);
3784
3785          // *** View Matrix ***
3786          glMultMatrixd(camera.viewMatrix.array);
3787
3788          // *** Lights ***
3789          // ...
3790
3791          glEnable(GL_DEPTH_TEST);
3792          glEnable(GL_LIGHTING);
3793          glShadeModel(GL_SMOOTH);
3794          glDepthMask((byte)bool::true);
3795          oglDisplay.depthWrite = true;
3796
3797          glEnable(GL_MULTISAMPLE_ARB);
3798       }
3799       else if(display.display3D.camera)
3800       {
3801          oglDisplay.depthWrite = false;
3802          glViewport(0,0,display.width,display.height);
3803
3804          glDisable(GL_CULL_FACE);
3805          glDisable(GL_DEPTH_TEST);
3806          glDisable(GL_LIGHTING);
3807          glDisable(GL_FOG);
3808          glDisable(GL_TEXTURE_2D);
3809          glShadeModel(GL_FLAT);
3810          glEnable(GL_BLEND);
3811          glDisable(GL_MULTISAMPLE_ARB);
3812
3813          // *** Restore 2D MODELVIEW Matrix ***
3814          glPopMatrix();
3815
3816          // *** Restore 2D PROJECTION Matrix ***
3817          glMatrixMode(GL_PROJECTION);
3818          glPopMatrix();
3819       }
3820
3821    }
3822
3823    void ApplyMaterial(Display display, Material material, Mesh mesh)
3824    {
3825       //Logf("ApplyMaterial\n");
3826
3827       // Basic Properties
3828       if(material.flags.doubleSided)
3829       {
3830          glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, !material.flags.singleSideLight);
3831          glDisable(GL_CULL_FACE);
3832       }
3833       else
3834       {
3835          glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, bool::false);
3836          glEnable(GL_CULL_FACE);
3837       }
3838
3839       // Fog
3840       if(material.flags.noFog)
3841          glDisable(GL_FOG);
3842       else
3843          glEnable(GL_FOG);
3844
3845       // Maps
3846       if(material.baseMap && (mesh.texCoords || mesh.flags.texCoords1))
3847       {
3848          Bitmap map = material.baseMap;
3849          glEnable(GL_TEXTURE_2D);
3850          glBindTexture(GL_TEXTURE_2D, (GLuint)(uintptr)map.driverData);
3851
3852          glMatrixMode(GL_TEXTURE);
3853          glLoadIdentity();
3854          if(material.uScale && material.vScale)
3855             glScalef(material.uScale, material.vScale, 1);
3856          glMatrixMode(GL_MODELVIEW);
3857
3858          if(material.flags.tile)
3859          {
3860             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
3861             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
3862          }
3863          else
3864          {
3865             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
3866             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
3867          }
3868       }
3869       else
3870          glDisable(GL_TEXTURE_2D);
3871
3872       if(mesh.flags.colors)
3873       {
3874          glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
3875          glEnable(GL_COLOR_MATERIAL);
3876       }
3877       else
3878       {
3879          glDisable(GL_COLOR_MATERIAL);
3880          {
3881             float color[4] = { material.diffuse.r, material.diffuse.g, material.diffuse.b, material.opacity };
3882             glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, color);
3883          }
3884          {
3885             float color[4] = { material.ambient.r, material.ambient.g, material.ambient.b, 0 };
3886             glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, color);
3887          }
3888       }
3889       {
3890          float color[4] = { material.specular.r, material.specular.g, material.specular.b, 0 };
3891          glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, color);
3892       }
3893       {
3894          float color[4] = { material.emissive.r, material.emissive.g, material.emissive.b, 0 };
3895          glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, color);
3896       }
3897
3898       glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, &material.power);
3899    }
3900
3901    void FreeMesh(DisplaySystem displaySystem, Mesh mesh)
3902    {
3903       OGLMesh oglMesh = mesh.data;
3904       if(oglMesh)
3905       {
3906          if(!mesh.flags.vertices)
3907          {
3908             oglMesh.vertices.free();
3909             delete mesh.vertices;
3910          }
3911          if(!mesh.flags.normals)
3912          {
3913             oglMesh.normals.free();
3914             delete mesh.normals;
3915          }
3916          if(!mesh.flags.texCoords1)
3917          {
3918             oglMesh.texCoords.free();
3919             delete mesh.texCoords;
3920          }
3921          if(!mesh.flags.texCoords2)
3922          {
3923             oglMesh.texCoords2.free();
3924             // delete mesh.texCoords2;
3925          }
3926          if(!mesh.flags.colors)
3927          {
3928             oglMesh.colors.free();
3929             delete mesh.colors;
3930          }
3931          if(!mesh.flags)
3932          {
3933             delete oglMesh;
3934             mesh.data = null;
3935          }
3936       }
3937    }
3938
3939    bool AllocateMesh(DisplaySystem displaySystem, Mesh mesh, MeshFeatures flags, int nVertices)
3940    {
3941       bool result = false;
3942
3943       if(!mesh.data)
3944          mesh.data = OGLMesh { };
3945       if(mesh.data)
3946       {
3947          if(mesh.nVertices == nVertices)
3948          {
3949             // Same number of vertices, adding features (Leaves the other features pointers alone)
3950             if(mesh.flags != flags)
3951             {
3952                if(!mesh.flags.vertices && flags.vertices)
3953                {
3954                   if(flags.doubleVertices)
3955                   {
3956                      mesh.vertices = (Vector3Df *)new Vector3D[nVertices];
3957                   }
3958                   else
3959                      mesh.vertices = new Vector3Df[nVertices];
3960                }
3961                if(!mesh.flags.normals && flags.normals)
3962                {
3963                   if(flags.doubleNormals)
3964                   {
3965                      mesh.normals = (Vector3Df *)new Vector3D[nVertices];
3966                   }
3967                   else
3968                      mesh.normals = new Vector3Df[nVertices];
3969                }
3970                if(!mesh.flags.texCoords1 && flags.texCoords1)
3971                {
3972                   mesh.texCoords = new Pointf[nVertices];
3973                }
3974                if(!mesh.flags.colors && flags.colors)
3975                {
3976                   mesh.colors = new ColorRGBAf[nVertices];
3977                }
3978             }
3979          }
3980          else
3981          {
3982             // New number of vertices, reallocate all current and new features
3983             flags |= mesh.flags;
3984             if(flags.vertices)
3985             {
3986                if(flags.doubleVertices)
3987                {
3988                   mesh.vertices = (Vector3Df *)renew mesh.vertices Vector3D[nVertices];
3989                }
3990                else
3991                   mesh.vertices = renew mesh.vertices Vector3Df[nVertices];
3992             }
3993             if(flags.normals)
3994             {
3995                if(flags.doubleNormals)
3996                {
3997                   mesh.normals = (Vector3Df *)renew mesh.normals Vector3D[nVertices];
3998                }
3999                else
4000                   mesh.normals = renew mesh.normals Vector3Df[nVertices];
4001             }
4002             if(flags.texCoords1)
4003             {
4004                mesh.texCoords = renew mesh.texCoords Pointf[nVertices];
4005             }
4006             if(flags.colors)
4007             {
4008                mesh.colors = renew mesh.colors ColorRGBAf[nVertices];
4009             }
4010          }
4011          result = true;
4012       }
4013       return result;
4014    }
4015
4016    void UnlockMesh(DisplaySystem displaySystem, Mesh mesh, MeshFeatures flags)
4017    {
4018       OGLMesh oglMesh = mesh.data;
4019       if(!flags) flags = mesh.flags;
4020
4021       if(vboAvailable)
4022       {
4023          if(flags.vertices)
4024             oglMesh.vertices.upload(
4025                mesh.nVertices * (mesh.flags.doubleVertices ? sizeof(Vector3D) : sizeof(Vector3Df)), mesh.vertices); //, GL_STATIC_DRAW_ARB );
4026
4027          if(flags.normals)
4028             oglMesh.normals.upload(
4029                mesh.nVertices * (mesh.flags.doubleNormals ? sizeof(Vector3D) : sizeof(Vector3Df)), mesh.normals); //, GL_STATIC_DRAW_ARB );
4030
4031          if(flags.texCoords1)
4032             oglMesh.texCoords.upload(
4033                mesh.nVertices * sizeof(Pointf), mesh.texCoords); //, GL_STATIC_DRAW_ARB );
4034
4035          if(flags.colors)
4036             oglMesh.colors.upload(
4037                mesh.nVertices * sizeof(ColorRGBAf), mesh.colors); //, GL_STATIC_DRAW_ARB );
4038       }
4039    }
4040
4041    bool LockMesh(DisplaySystem displaySystem, Mesh mesh, MeshFeatures flags)
4042    {
4043       bool result = true;
4044
4045         return result;
4046    }
4047
4048    void FreeIndices(DisplaySystem displaySystem, OGLIndices oglIndices)
4049    {
4050       if(oglIndices)
4051       {
4052          oglIndices.buffer.free();
4053          delete oglIndices.indices;
4054          delete oglIndices;
4055       }
4056    }
4057
4058    void * AllocateIndices(DisplaySystem displaySystem, int nIndices, bool indices32bit)
4059    {
4060       OGLIndices oglIndices = OGLIndices { };
4061       if(oglIndices)
4062       {
4063          oglIndices.indices = (void *)(indices32bit ? new uint32[nIndices] : new uint16[nIndices]);
4064          oglIndices.nIndices = nIndices;
4065       }
4066       return oglIndices;
4067    }
4068
4069    void UnlockIndices(DisplaySystem displaySystem, OGLIndices oglIndices, bool indices32bit, int nIndices)
4070    {
4071       if(vboAvailable)
4072       {
4073          oglIndices.buffer.upload(
4074             nIndices * (indices32bit ? sizeof(uint32) : sizeof(uint16)),
4075             oglIndices.indices); //GL_STATIC_DRAW_ARB);
4076       }
4077    }
4078
4079    uint16 * LockIndices(DisplaySystem displaySystem, OGLIndices oglIndices)
4080    {
4081
4082       return oglIndices.indices;
4083    }
4084
4085    void SelectMesh(Display display, Mesh mesh)
4086    {
4087       //Logf("SelectMesh\n");
4088
4089 #if !defined( __ANDROID__) && !defined(__APPLE__) && !defined(__ODROID__)
4090
4091 #if defined(__WIN32__)
4092       if(glUnlockArraysEXT)
4093 #endif
4094          if(!vboAvailable && display.display3D.mesh)
4095             glUnlockArraysEXT();
4096
4097 #endif
4098       if(mesh)
4099       {
4100          OGLMesh oglMesh = mesh.data;
4101
4102          // *** Vertex Stream ***
4103          glEnableClientState(GL_VERTEX_ARRAY);
4104          if(!display.display3D.collectingHits && oglMesh)
4105          {
4106             oglMesh.vertices.use(vertex, 3, (mesh.flags.doubleVertices ? GL_DOUBLE : GL_FLOAT), 0, oglMesh.vertices.buffer ? null : (double *)mesh.vertices);
4107
4108             // *** Normals Stream ***
4109             if(mesh.normals || mesh.flags.normals)
4110             {
4111                glEnableClientState(GL_NORMAL_ARRAY);
4112                oglMesh.normals.use(normal, 3, GL_FLOAT, 0, oglMesh.normals.buffer ? null : mesh.normals);
4113             }
4114             else
4115                glDisableClientState(GL_NORMAL_ARRAY);
4116
4117             // *** Texture Coordinates Stream ***
4118             if(mesh.texCoords || mesh.flags.texCoords1)
4119             {
4120                glEnableClientState(GL_TEXTURE_COORD_ARRAY);
4121                oglMesh.texCoords.use(texCoord, 2, GL_FLOAT, 0, oglMesh.texCoords.buffer ? null : mesh.texCoords);
4122             }
4123             else
4124                glDisableClientState(GL_TEXTURE_COORD_ARRAY);
4125
4126             // *** Color Stream ***
4127             if(mesh.colors || mesh.flags.colors)
4128             {
4129                glEnableClientState(GL_COLOR_ARRAY);
4130                oglMesh.colors.use(color, 4, GL_FLOAT, 0, oglMesh.colors.buffer ? null : mesh.colors);
4131             }
4132             else
4133                glDisableClientState(GL_COLOR_ARRAY);
4134          }
4135          else
4136          {
4137             noAB.use(vertex, 3, (mesh.flags.doubleVertices ? GL_DOUBLE : GL_FLOAT), 0, (double *)mesh.vertices);
4138             if((mesh.normals || mesh.flags.normals) && !display.display3D.collectingHits)
4139             {
4140                glEnableClientState(GL_NORMAL_ARRAY);
4141                noAB.use(normal, 3, GL_FLOAT, 0, mesh.normals);
4142             }
4143             else
4144                glDisableClientState(GL_NORMAL_ARRAY);
4145             if((mesh.texCoords || mesh.flags.texCoords1) && !display.display3D.collectingHits)
4146             {
4147                glEnableClientState(GL_TEXTURE_COORD_ARRAY);
4148                noAB.use(texCoord, 2, GL_FLOAT, 0, mesh.texCoords);
4149             }
4150             else
4151                glDisableClientState(GL_TEXTURE_COORD_ARRAY);
4152             if((mesh.colors || mesh.flags.colors) && !display.display3D.collectingHits)
4153             {
4154                glEnableClientState(GL_COLOR_ARRAY);
4155                noAB.use(color, 4, GL_FLOAT, 0, mesh.colors);
4156             }
4157             else
4158                glDisableClientState(GL_COLOR_ARRAY);
4159          }
4160
4161 #if !defined(__ANDROID__) && !defined(__APPLE__) && !defined(__ODROID__)
4162
4163 #if defined(__WIN32__)
4164          if(glLockArraysEXT)
4165 #endif
4166             if(!vboAvailable)
4167                glLockArraysEXT(0, mesh.nVertices);
4168
4169 #endif
4170       }
4171    }
4172
4173    void DrawPrimitives(Display display, PrimitiveSingle * primitive, Mesh mesh)
4174    {
4175       //Logf("DrawPrimitives\n");
4176
4177       if(primitive->type.vertexRange)
4178          glDrawArrays(primitiveTypes[primitive->type.primitiveType], primitive->first, primitive->nVertices);
4179       else
4180       {
4181          //    *** Hoping the data won't be uploaded at all (Won't really work if another group of the mesh is using the mesh ) ***
4182          // HACK TO SPEED THINGS UP...
4183 #ifndef __ANDROID__
4184          /*GLBindBuffer(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
4185          if(primitive->nIndices < (mesh.nVertices >> 2) && !primitive->type.indices32bit)
4186          {
4187             int c;
4188             glBegin(primitiveTypes[primitive->type.primitiveType]);
4189             if(primitive->data)
4190             {
4191                OGLIndices oglIndices = primitive->data;
4192                MeshFeatures flags = mesh.flags;
4193                for(c = 0; c<primitive->nIndices; c++)
4194                {
4195                   uint16 index = ((uint16 *) oglIndices.indices)[c];
4196                   if(flags.normals) glNormal3fv((float *)&mesh.normals[index]);
4197                   if(flags.texCoords1) glTexCoord2fv((float *)&mesh.texCoords[index]);
4198                   if(flags.colors) glColor4fv((float *)&mesh.colors[index]);
4199                   glVertex3fv((float *)&mesh.vertices[index]);
4200                }
4201             }
4202             glEnd();
4203          }
4204          else*/
4205 #endif
4206          {
4207             OGLIndices oglIndices = primitive->data;
4208
4209             if(!display.display3D.collectingHits && vboAvailable && oglIndices)
4210             {
4211                if(primitive->type.indices32bit)
4212                   ; //oglIndices.buffer.draw(primitiveTypes[primitive->type.primitiveType], primitive->nIndices, GL_UNSIGNED_SHORT, 0);
4213                else
4214                   oglIndices.buffer.draw(primitiveTypes[primitive->type.primitiveType], primitive->nIndices, GL_UNSIGNED_SHORT, 0);
4215             }
4216             else
4217             {
4218                if(primitive->type.indices32bit)
4219                   glDrawElementsi(primitiveTypes[primitive->type.primitiveType], primitive->nIndices,
4220                      oglIndices ? oglIndices.indices : primitive->indices);
4221                else
4222                   glDrawElements(primitiveTypes[primitive->type.primitiveType], primitive->nIndices,
4223                      GL_UNSIGNED_SHORT, oglIndices ? oglIndices.indices : primitive->indices);
4224             }
4225          }
4226       }
4227    }
4228
4229    void PushMatrix(Display display)
4230    {
4231       glPushMatrix();
4232    }
4233
4234    void PopMatrix(Display display, bool setMatrix)
4235    {
4236       glPopMatrix();
4237    }
4238
4239    void SetTransform(Display display, Matrix transMatrix, bool viewSpace, bool useCamera)
4240    {
4241       Matrix matrix = transMatrix;
4242       Camera camera = useCamera ? display.display3D.camera : null;
4243
4244       if(viewSpace)
4245       {
4246          glLoadIdentity();
4247          glScaled(1.0/nearPlane, 1.0/nearPlane, -1.0/nearPlane);
4248       }
4249       else if(camera)
4250       {
4251          glTranslated(
4252             matrix.m[3][0] - camera.cPosition.x,
4253             matrix.m[3][1] - camera.cPosition.y,
4254             matrix.m[3][2] - camera.cPosition.z);
4255       }
4256       else
4257          glTranslated(
4258             matrix.m[3][0],
4259             matrix.m[3][1],
4260             matrix.m[3][2]);
4261
4262       matrix.m[3][0] = 0;
4263       matrix.m[3][1] = 0;
4264       matrix.m[3][2] = 0;
4265
4266       glMultMatrixd(matrix.array);
4267    }
4268 #endif
4269 }
4270
4271 public void UseSingleGLContext(bool useSingle)
4272 {
4273    useSingleGLContext = useSingle;
4274 }
4275
4276 default dllexport void *
4277 #if defined(__WIN32__)
4278 __attribute__((stdcall))
4279 #endif
4280 IS_GLGetContext(DisplaySystem displaySystem)
4281 {
4282    if(displaySystem)
4283    {
4284 #if defined(__WIN32__)
4285       OGLSystem system = displaySystem.driverData;
4286       return system.glrc;
4287 #elif defined(__ANDROID__) || defined(__ODROID__)
4288       return eglContext;
4289 #else
4290       OGLSystem system = displaySystem.driverData;
4291       return system.glContext;
4292 #endif
4293    }
4294    return null;
4295 }
4296
4297 #endif