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