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

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