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

   1 // We were using PBUFFER for alpha compositing on Linux before, but it does not seem to work, nor be required anymore.
   2 // #define USEPBUFFER
   3
   4 namespace gfx::drivers;
   5
   6 // OpenGL Extensions
   7 #if defined(__unix__) || defined(__APPLE__)
   8
   9 #if !defined(__MINGW32__)
  10    #define GL_GLEXT_PROTOTYPES
  11 #endif
  12
  13 #define pointer _pointer
  14
  15 #ifdef ECERE_MINIGLX
  16
  17 //#include <GL/miniglx.h>
  18
  19 #else
  20
  21    #if !defined(__ANDROID__) && !defined(__ODROID__)
  22
  23       #define property _property
  24       #define new _new
  25       #define class _class
  26
  27       #define Window    X11Window
  28       #define Cursor    X11Cursor
  29       #define Font      X11Font
  30       #define Display   X11Display
  31       #define Time      X11Time
  32       #define KeyCode   X11KeyCode
  33       #define Picture   X11Picture
  34       #define uint _uint
  35
  36       #include <X11/Xlib.h>
  37       #include <X11/Xutil.h>
  38       #include <GL/glx.h>
  39       #include <X11/extensions/XShm.h>
  40       #include <sys/ipc.h>
  41       #include <sys/shm.h>
  42       #include <X11/extensions/Xrender.h>
  43       #include <X11/extensions/shape.h>
  44
  45       #undef Window
  46       #undef Cursor
  47       #undef Font
  48       #undef Display
  49       #undef Time
  50       #undef KeyCode
  51       #undef Picture
  52       #undef uint
  53       #undef new
  54       #undef property
  55       #undef class
  56
  57    #endif
  58
  59 #endif
  60
  61 #endif
  62
  63 #if defined(__APPLE__)
  64 #include <OpenGl/gl.h>
  65 #endif
  66
  67 #if defined(__WIN32__) || defined(__unix__) || defined(__APPLE__)
  68
  69 #if defined(__WIN32__)
  70    #define WIN32_LEAN_AND_MEAN
  71    #undef _WIN32_WINNT
  72    #define _WIN32_WINNT 0x0502
  73    #define String Sting_
  74    #include <windows.h>
  75    #undef String
  76 #endif
  77
  78 #if defined(__ANDROID__) || defined(__ODROID__)
  79
  80 #define uint _uint
  81 #define property _property
  82 #define new _new
  83 #define class _class
  84 #define Window    X11Window
  85 #define Cursor    X11Cursor
  86 #define Font      X11Font
  87 #define Display   X11Display
  88 #define Time      X11Time
  89 #define KeyCode   X11KeyCode
  90 #define Picture   X11Picture
  91 #define Bool      X11Bool
  92
  93    #include <GLES/gl.h>
  94    #include <EGL/egl.h>
  95
  96 #undef Bool
  97 #undef Picture
  98 #undef Window
  99 #undef Cursor
 100 #undef Font
 101 #undef Display
 102 #undef Time
 103 #undef KeyCode
 104 #undef uint
 105 #undef new
 106 #undef property
 107 #undef class
 108
 109 #else
 110
 111    #include <GL/gl.h>
 112    #include <GL/glext.h>
 113
 114 #endif
 115
 116 #if defined(__ODROID__) && !defined(_GLES)
 117 #define _GLES
 118 #endif
 119
 120 #undef pointer
 121
 122 import "Display"
 123
 124 #if defined(__unix__) || defined(__APPLE__)
 125
 126    #if !defined(__ANDROID__) && !defined(__ODROID__)
 127    import "XInterface"
 128    #endif
 129
 130 #endif
 131
 132 static double nearPlane = 1;
 133
 134 public double glesGetNearPlane()
 135 {
 136    return nearPlane;
 137 }
 138
 139 public void glesSetNearPlane(double value)
 140 {
 141    nearPlane = value;
 142 }
 143
 144 #define glLoadMatrix glLoadMatrixd
 145 #define glMultMatrix glMultMatrixd
 146 #define glGetMatrix  glGetDoublev
 147 #define glTranslate glTranslated
 148 #define glScale glScaled
 149
 150 /*
 151 #define glVertex3v glVertex3dv
 152 #define glNormal3v glNormal3dv
 153 */
 154
 155 /*
 156 //#ifdef VERTEX_FORMAT_DOUBLE
 157
 158 #define glLoadMatrix glLoadMatrixd
 159 #define glMultMatrix glMultMatrixd
 160 #define glGetMatrix  glGetDoublev
 161 #define glVertex3v glVertex3dv
 162 #define glNormal3v glNormal3dv
 163 #define glTranslate glTranslated
 164 #define glScale glScaled
 165 //#define GL_VERTEX_FORMAT   GL_DOUBLE
 166
 167 #else
 168
 169 #define glLoadMatrix glLoadMatrixf
 170 #define glMultMatrix glMultMatrixf
 171 #define glGetMatrix  glGetFloatv
 172 #define glVertex3v glVertex3fv
 173 #define glNormal3v glNormal3fv
 174 #define glTranslate glTranslatef
 175 #define glScale glScalef
 176 //#define GL_VERTEX_FORMAT   GL_FLOAT
 177
 178 #endif
 179 */
 180
 181 #define GL_ARRAY_BUFFER_ARB            0x8892
 182 #define GL_ELEMENT_ARRAY_BUFFER_ARB    0x8893
 183 #define GL_STATIC_DRAW_ARB             0x88E4
 184 #define GL_LIGHT_MODEL_COLOR_CONTROL   0x81F8
 185 #define GL_SEPARATE_SPECULAR_COLOR     0x81FA
 186
 187 #define GL_MULTISAMPLE_ARB             0x809D
 188
 189 #if defined(__WIN32__)
 190
 191    #define WGL_SAMPLE_BUFFERS_ARB              0x2041
 192    #define WGL_SAMPLES_ARB                     0x2042
 193
 194    #define  WGL_WGLEXT_VERSION   1
 195    #define  WGL_FRONT_COLOR_BUFFER_BIT_ARB   0x00000001
 196    #define  WGL_BACK_COLOR_BUFFER_BIT_ARB   0x00000002
 197    #define  WGL_DEPTH_BUFFER_BIT_ARB   0x00000004
 198    #define  WGL_STENCIL_BUFFER_BIT_ARB   0x00000008
 199    #define  WGL_NUMBER_PIXEL_FORMATS_ARB   0x2000
 200    #define  WGL_DRAW_TO_WINDOW_ARB   0x2001
 201    #define  WGL_DRAW_TO_BITMAP_ARB   0x2002
 202    #define  WGL_ACCELERATION_ARB   0x2003
 203    #define  WGL_NEED_PALETTE_ARB   0x2004
 204    #define  WGL_NEED_SYSTEM_PALETTE_ARB   0x2005
 205    #define  WGL_SWAP_LAYER_BUFFERS_ARB   0x2006
 206    #define  WGL_SWAP_METHOD_ARB   0x2007
 207    #define  WGL_NUMBER_OVERLAYS_ARB   0x2008
 208    #define  WGL_NUMBER_UNDERLAYS_ARB   0x2009
 209    #define  WGL_TRANSPARENT_ARB   0x200A
 210    #define  WGL_TRANSPARENT_RED_VALUE_ARB   0x2037
 211    #define  WGL_TRANSPARENT_GREEN_VALUE_ARB   0x2038
 212    #define  WGL_TRANSPARENT_BLUE_VALUE_ARB   0x2039
 213    #define  WGL_TRANSPARENT_ALPHA_VALUE_ARB   0x203A
 214    #define  WGL_TRANSPARENT_INDEX_VALUE_ARB   0x203B
 215    #define  WGL_SHARE_DEPTH_ARB   0x200C
 216    #define  WGL_SHARE_STENCIL_ARB   0x200D
 217    #define  WGL_SHARE_ACCUM_ARB   0x200E
 218    #define  WGL_SUPPORT_GDI_ARB   0x200F
 219    #define  WGL_SUPPORT_OPENGL_ARB   0x2010
 220    #define  WGL_DOUBLE_BUFFER_ARB   0x2011
 221    #define  WGL_STEREO_ARB   0x2012
 222    #define  WGL_PIXEL_TYPE_ARB   0x2013
 223    #define  WGL_COLOR_BITS_ARB   0x2014
 224    #define  WGL_RED_BITS_ARB   0x2015
 225    #define  WGL_RED_SHIFT_ARB   0x2016
 226    #define  WGL_GREEN_BITS_ARB   0x2017
 227    #define  WGL_GREEN_SHIFT_ARB   0x2018
 228    #define  WGL_BLUE_BITS_ARB   0x2019
 229    #define  WGL_BLUE_SHIFT_ARB   0x201A
 230    #define  WGL_ALPHA_BITS_ARB   0x201B
 231    #define  WGL_ALPHA_SHIFT_ARB   0x201C
 232    #define  WGL_ACCUM_BITS_ARB   0x201D
 233    #define  WGL_ACCUM_RED_BITS_ARB   0x201E
 234    #define  WGL_ACCUM_GREEN_BITS_ARB   0x201F
 235    #define  WGL_ACCUM_BLUE_BITS_ARB   0x2020
 236    #define  WGL_ACCUM_ALPHA_BITS_ARB   0x2021
 237    #define  WGL_DEPTH_BITS_ARB   0x2022
 238    #define  WGL_STENCIL_BITS_ARB   0x2023
 239    #define  WGL_AUX_BUFFERS_ARB   0x2024
 240    #define  WGL_NO_ACCELERATION_ARB   0x2025
 241    #define  WGL_GENERIC_ACCELERATION_ARB   0x2026
 242    #define  WGL_FULL_ACCELERATION_ARB   0x2027
 243    #define  WGL_SWAP_EXCHANGE_ARB   0x2028
 244    #define  WGL_SWAP_COPY_ARB   0x2029
 245    #define  WGL_SWAP_UNDEFINED_ARB   0x202A
 246    #define  WGL_TYPE_RGBA_ARB   0x202B
 247    #define  WGL_TYPE_COLORINDEX_ARB   0x202C
 248    #define  ERROR_INVALID_PIXEL_TYPE_ARB   0x2043
 249    #define  ERROR_INCOMPATIBLE_DEVICE_CONTEXTS_ARB   0x2054
 250    #define  WGL_DRAW_TO_PBUFFER_ARB   0x202D
 251    #define  WGL_MAX_PBUFFER_PIXELS_ARB   0x202E
 252    #define  WGL_MAX_PBUFFER_WIDTH_ARB   0x202F
 253    #define  WGL_MAX_PBUFFER_HEIGHT_ARB   0x2030
 254    #define  WGL_PBUFFER_LARGEST_ARB   0x2033
 255    #define  WGL_PBUFFER_WIDTH_ARB   0x2034
 256    #define  WGL_PBUFFER_HEIGHT_ARB   0x2035
 257    #define  WGL_PBUFFER_LOST_ARB   0x2036
 258    #define  ERROR_INVALID_PIXEL_TYPE_EXT   0x2043
 259    #define  WGL_NUMBER_PIXEL_FORMATS_EXT   0x2000
 260    #define  WGL_DRAW_TO_WINDOW_EXT   0x2001
 261    #define  WGL_DRAW_TO_BITMAP_EXT   0x2002
 262    #define  WGL_ACCELERATION_EXT   0x2003
 263    #define  WGL_NEED_PALETTE_EXT   0x2004
 264    #define  WGL_NEED_SYSTEM_PALETTE_EXT   0x2005
 265    #define  WGL_SWAP_LAYER_BUFFERS_EXT   0x2006
 266    #define  WGL_SWAP_METHOD_EXT   0x2007
 267    #define  WGL_NUMBER_OVERLAYS_EXT   0x2008
 268    #define  WGL_NUMBER_UNDERLAYS_EXT   0x2009
 269    #define  WGL_TRANSPARENT_EXT   0x200A
 270    #define  WGL_TRANSPARENT_VALUE_EXT   0x200B
 271    #define  WGL_SHARE_DEPTH_EXT   0x200C
 272    #define  WGL_SHARE_STENCIL_EXT   0x200D
 273    #define  WGL_SHARE_ACCUM_EXT   0x200E
 274    #define  WGL_SUPPORT_GDI_EXT   0x200F
 275    #define  WGL_SUPPORT_OPENGL_EXT   0x2010
 276    #define  WGL_DOUBLE_BUFFER_EXT   0x2011
 277    #define  WGL_STEREO_EXT   0x2012
 278    #define  WGL_PIXEL_TYPE_EXT   0x2013
 279    #define  WGL_COLOR_BITS_EXT   0x2014
 280    #define  WGL_RED_BITS_EXT   0x2015
 281    #define  WGL_RED_SHIFT_EXT   0x2016
 282    #define  WGL_GREEN_BITS_EXT   0x2017
 283    #define  WGL_GREEN_SHIFT_EXT   0x2018
 284    #define  WGL_BLUE_BITS_EXT   0x2019
 285    #define  WGL_BLUE_SHIFT_EXT   0x201A
 286    #define  WGL_ALPHA_BITS_EXT   0x201B
 287    #define  WGL_ALPHA_SHIFT_EXT   0x201C
 288    #define  WGL_ACCUM_BITS_EXT   0x201D
 289    #define  WGL_ACCUM_RED_BITS_EXT   0x201E
 290    #define  WGL_ACCUM_GREEN_BITS_EXT   0x201F
 291    #define  WGL_ACCUM_BLUE_BITS_EXT   0x2020
 292    #define  WGL_ACCUM_ALPHA_BITS_EXT   0x2021
 293    #define  WGL_DEPTH_BITS_EXT   0x2022
 294    #define  WGL_STENCIL_BITS_EXT   0x2023
 295    #define  WGL_AUX_BUFFERS_EXT   0x2024
 296    #define  WGL_NO_ACCELERATION_EXT   0x2025
 297    #define  WGL_GENERIC_ACCELERATION_EXT   0x2026
 298    #define  WGL_FULL_ACCELERATION_EXT   0x2027
 299    #define  WGL_SWAP_EXCHANGE_EXT   0x2028
 300    #define  WGL_SWAP_COPY_EXT   0x2029
 301    #define  WGL_SWAP_UNDEFINED_EXT   0x202A
 302    #define  WGL_TYPE_RGBA_EXT   0x202B
 303    #define  WGL_TYPE_COLORINDEX_EXT   0x202C
 304    #define  WGL_DRAW_TO_PBUFFER_EXT   0x202D
 305    #define  WGL_MAX_PBUFFER_PIXELS_EXT   0x202E
 306    #define  WGL_MAX_PBUFFER_WIDTH_EXT   0x202F
 307    #define  WGL_MAX_PBUFFER_HEIGHT_EXT   0x2030
 308    #define  WGL_OPTIMAL_PBUFFER_WIDTH_EXT   0x2031
 309    #define  WGL_OPTIMAL_PBUFFER_HEIGHT_EXT   0x2032
 310    #define  WGL_PBUFFER_LARGEST_EXT   0x2033
 311    #define  WGL_PBUFFER_WIDTH_EXT   0x2034
 312    #define  WGL_PBUFFER_HEIGHT_EXT   0x2035
 313    #define  WGL_DEPTH_FLOAT_EXT   0x2040
 314    #define  WGL_SAMPLE_BUFFERS_3DFX   0x2060
 315    #define  WGL_SAMPLES_3DFX   0x2061
 316    #define  WGL_SAMPLE_BUFFERS_EXT   0x2041
 317    #define  WGL_SAMPLES_EXT   0x2042
 318    #define  WGL_GENLOCK_SOURCE_MULTIVIEW_I3D   0x2044
 319    #define  WGL_GENLOCK_SOURCE_EXTENAL_SYNC_I3D   0x2045
 320    #define  WGL_GENLOCK_SOURCE_EXTENAL_FIELD_I3D   0x2046
 321    #define  WGL_GENLOCK_SOURCE_EXTENAL_TTL_I3D   0x2047
 322    #define  WGL_GENLOCK_SOURCE_DIGITAL_SYNC_I3D   0x2048
 323    #define  WGL_GENLOCK_SOURCE_DIGITAL_FIELD_I3D   0x2049
 324    #define  WGL_GENLOCK_SOURCE_EDGE_FALLING_I3D   0x204A
 325    #define  WGL_GENLOCK_SOURCE_EDGE_RISING_I3D   0x204B
 326    #define  WGL_GENLOCK_SOURCE_EDGE_BOTH_I3D   0x204C
 327    #define  WGL_GAMMA_TABLE_SIZE_I3D   0x204E
 328    #define  WGL_GAMMA_EXCLUDE_DESKTOP_I3D   0x204F
 329    #define  WGL_DIGITAL_VIDEO_CURSOR_ALPHA_FRAMEBUFFER_I3D   0x2050
 330    #define  WGL_DIGITAL_VIDEO_CURSOR_ALPHA_VALUE_I3D   0x2051
 331    #define  WGL_DIGITAL_VIDEO_CURSOR_INCLUDED_I3D   0x2052
 332    #define  WGL_DIGITAL_VIDEO_GAMMA_CORRECTED_I3D   0x2053
 333    #define  WGL_ARB_buffer_region   1
 334    #define  WGL_ARB_extensions_string   1
 335    #define  WGL_ARB_pixel_format   1
 336    #define  WGL_ARB_make_current_read   1
 337    #define  WGL_ARB_pbuffer   1
 338    #define  WGL_EXT_display_color_table   1
 339    #define  WGL_EXT_extensions_string   1
 340    #define  WGL_EXT_make_current_read   1
 341    #define  WGL_EXT_pbuffer   1
 342    #define  WGL_EXT_pixel_format   1
 343    #define  WGL_EXT_swap_control   1
 344    #define  WGL_WGL_EXT_depth_float   1
 345    #define  WGL_WGL_3DFX_multisample   1
 346    #define  WGL_WGL_EXT_multisample   1
 347    #define  WGL_NV_allocate_memory   1
 348
 349    /*
 350    typedef void (APIENTRY * PFNGLACTIVETEXTUREARBPROC) (GLenum target);
 351    typedef void (APIENTRY * PFNGLMULTITEXCOORD2FARBPROC) (GLenum target, GLfloat s, GLfloat t);
 352    typedef void (APIENTRY * PFNGLCLIENTACTIVETEXTUREARBPROC) (GLenum target);
 353    typedef void (APIENTRY * PFNGLLOCKARRAYSEXTPROC) (GLint first, GLsizei count);
 354    typedef void (APIENTRY * PFNGLUNLOCKARRAYSEXTPROC) (void);
 355    */
 356
 357    /*
 358    typedef int (APIENTRY * PFNGLBINDBUFFERARBPROC) (GLenum target, GLuint buffer);
 359    typedef int (APIENTRY * PFNGLDELETEBUFFERSARBPROC) (GLsizei n, const GLuint *buffers);
 360    typedef int (APIENTRY * PFNGLGENBUFFERSARBPROC) (GLsizei n, GLuint *buffers);
 361    typedef int (APIENTRY * PFNGLBUFFERDATAARBPROC) (GLenum target, int size, const GLvoid *data, GLenum usage);
 362    */
 363    typedef int (APIENTRY * PFNWGLCHOOSEPIXELFORMATARBPROC) ();
 364    typedef void * (APIENTRY * PFNWGLCREATEPBUFFERARBPROC) (HDC hDC, int iPixelFormat, int iWidth, int iHeight, const int *piAttribList);
 365    typedef HDC (APIENTRY * PFNWGLGETPBUFFERDCARBPROC) (void * hPbuffer);
 366    typedef int (APIENTRY * PFNWGLRELEASEPBUFFERDCARBPROC) (void * hPbuffer, HDC hDC);
 367    typedef BOOL (APIENTRY * PFNWGLDESTROYPBUFFERARBPROC) (void * hPbuffer);
 368    typedef BOOL (APIENTRY * PFNWGLQUERYPBUFFERARBPROC) (void * hPbuffer, int iAttribute, int *piValue);
 369    typedef const char * (APIENTRY * PFNWGLGETEXTENSIONSSTRINGARBPROC) (HDC hdc);
 370    typedef BOOL (APIENTRY * PFNWGLBINDTEXIMAGEARBPROC) (void * hPbuffer, int iBuffer);
 371    typedef BOOL (APIENTRY * PFNWGLRELEASETEXIMAGEARBPROC) (void * hPbuffer, int iBuffer);
 372
 373    static PFNGLMAPBUFFERARBPROC glMapBufferARB = null;
 374    static PFNGLUNMAPBUFFERARBPROC glUnmapBufferARB = null;
 375    static PFNGLACTIVETEXTUREARBPROC glActiveTextureARB = null;
 376    static PFNGLMULTITEXCOORD2FARBPROC glMultiTexCoord2fARB = null;
 377    static PFNGLCLIENTACTIVETEXTUREARBPROC glClientActiveTextureARB = null;
 378    static PFNGLLOCKARRAYSEXTPROC glLockArraysEXT = null;
 379    static PFNGLUNLOCKARRAYSEXTPROC glUnlockArraysEXT = null;
 380    static PFNGLBLENDFUNCSEPARATEPROC glBlendFuncSeparate = null;
 381
 382    static PFNGLGENBUFFERSARBPROC glGenBuffersARB = null;
 383    static PFNGLBINDBUFFERARBPROC glBindBufferARB = null;
 384    static PFNGLBUFFERDATAARBPROC glBufferDataARB = null;
 385    static PFNGLDELETEBUFFERSARBPROC glDeleteBuffersARB = null;
 386    static PFNWGLCHOOSEPIXELFORMATARBPROC wglChoosePixelFormatARB = null;
 387    static PFNWGLGETEXTENSIONSSTRINGARBPROC wglGetExtensionsStringARB = null;
 388    static PFNWGLCREATEPBUFFERARBPROC wglCreatePbufferARB = null;
 389    static PFNWGLGETPBUFFERDCARBPROC wglGetPbufferDCARB = null;
 390    static PFNWGLQUERYPBUFFERARBPROC wglQueryPbufferARB = null;
 391    static PFNWGLDESTROYPBUFFERARBPROC wglDestroyPbufferARB = null;
 392    static PFNWGLRELEASEPBUFFERDCARBPROC wglReleasePbufferDCARB = null;
 393    static PFNWGLBINDTEXIMAGEARBPROC wglBindTexImageARB = null;
 394    static PFNWGLRELEASETEXIMAGEARBPROC wglReleaseTexImageARB = null;
 395
 396    #define glBufferData glBufferDataARB
 397
 398    #ifdef WGL_WGLEXT_PROTOTYPES
 399    extern BOOL WINAPI wglSwapIntervalEXT (int);
 400    extern int WINAPI wglGetSwapIntervalEXT (void);
 401    #endif /* WGL_WGLEXT_PROTOTYPES */
 402    typedef BOOL (WINAPI * PFNWGLSWAPINTERVALEXTPROC) (int interval);
 403    typedef int (WINAPI * PFNWGLGETSWAPINTERVALEXTPROC) (void);
 404
 405    static PFNWGLSWAPINTERVALEXTPROC wglSwapIntervalEXT = NULL;
 406
 407 #elif defined(__ANDROID__) || defined(__ODROID__)
 408
 409    #define GL_FRAMEBUFFER           GL_FRAMEBUFFER_OES
 410    #define GL_RENDERBUFFER          GL_RENDERBUFFER_OES
 411    #define GL_COLOR_ATTACHMENT0     GL_COLOR_ATTACHMENT0_OES
 412
 413    #define GL_POLYGON_STIPPLE 0xFFFF
 414    #define GL_LINE_STIPPLE 0xFFFF
 415    #define GL_LINE 0xFFFF
 416    #define GL_FILL 0xFFFF
 417    #define GL_ALL_ATTRIB_BITS 0xFFFF
 418    #define GL_LIGHT_MODEL_LOCAL_VIEWER 0xFFFF
 419
 420    #define GL_POLYGON      9
 421    #define GL_QUADS        7
 422
 423    //#define GL_QUADS              0
 424    #define GL_QUAD_STRIP         0
 425    //#define GL_DOUBLE             0
 426    //#define GL_UNSIGNED_INT       0
 427    //#define GL_FILL               0
 428    //#define GL_LINE               0
 429    //#define GL_LINE_STIPPLE       0
 430    #define GL_BGRA_EXT           0
 431    #define GL_UNPACK_ROW_LENGTH  0
 432    #define GL_UNPACK_SKIP_PIXELS 0
 433    #define GL_UNPACK_SKIP_ROWS   0
 434    #define GL_RGBA8              0
 435    #define GL_PACK_ROW_LENGTH    0
 436    #define GL_PACK_SKIP_ROWS     0
 437    #define GL_PACK_SKIP_PIXELS   0
 438
 439 #endif
 440
 441 #if defined(ECERE_NO3D) || defined(ECERE_VANILLA)
 442 public union Matrix
 443 {
 444    double array[16];
 445    double m[4][4];
 446
 447    void Identity()
 448    {
 449       FillBytesBy4(this, 0, sizeof(Matrix) >> 2);
 450       m[0][0]=m[1][1]=m[2][2]=m[3][3]=1;
 451    }
 452
 453    void Transpose(Matrix source)
 454    {
 455       int i,j;
 456       for(i=0; i<4; i++)
 457          for(j=0; j<4; j++)
 458             m[j][i] = source.m[i][j];
 459    }
 460
 461    void Multiply(Matrix a, Matrix b)
 462    {
 463       // We need a full matrix multiplication for the Projection matrix
 464       m[0][0]=a.m[0][0]*b.m[0][0] + a.m[0][1]*b.m[1][0] + a.m[0][2]*b.m[2][0] + a.m[0][3]*b.m[3][0];
 465       m[0][1]=a.m[0][0]*b.m[0][1] + a.m[0][1]*b.m[1][1] + a.m[0][2]*b.m[2][1] + a.m[0][3]*b.m[3][1];
 466       m[0][2]=a.m[0][0]*b.m[0][2] + a.m[0][1]*b.m[1][2] + a.m[0][2]*b.m[2][2] + a.m[0][3]*b.m[3][2];
 467       m[0][3]=a.m[0][0]*b.m[0][3] + a.m[0][1]*b.m[1][3] + a.m[0][2]*b.m[2][3] + a.m[0][3]*b.m[3][3];
 468
 469       m[1][0]=a.m[1][0]*b.m[0][0] + a.m[1][1]*b.m[1][0] + a.m[1][2]*b.m[2][0] + a.m[1][3]*b.m[3][0];
 470       m[1][1]=a.m[1][0]*b.m[0][1] + a.m[1][1]*b.m[1][1] + a.m[1][2]*b.m[2][1] + a.m[1][3]*b.m[3][1];
 471       m[1][2]=a.m[1][0]*b.m[0][2] + a.m[1][1]*b.m[1][2] + a.m[1][2]*b.m[2][2] + a.m[1][3]*b.m[3][2];
 472       m[1][3]=a.m[1][0]*b.m[0][3] + a.m[1][1]*b.m[1][3] + a.m[1][2]*b.m[2][3] + a.m[1][3]*b.m[3][3];
 473
 474       m[2][0]=a.m[2][0]*b.m[0][0] + a.m[2][1]*b.m[1][0] + a.m[2][2]*b.m[2][0] + a.m[2][3]*b.m[3][0];
 475       m[2][1]=a.m[2][0]*b.m[0][1] + a.m[2][1]*b.m[1][1] + a.m[2][2]*b.m[2][1] + a.m[2][3]*b.m[3][1];
 476       m[2][2]=a.m[2][0]*b.m[0][2] + a.m[2][1]*b.m[1][2] + a.m[2][2]*b.m[2][2] + a.m[2][3]*b.m[3][2];
 477       m[2][3]=a.m[2][0]*b.m[0][3] + a.m[2][1]*b.m[1][3] + a.m[2][2]*b.m[2][3] + a.m[2][3]*b.m[3][3];
 478
 479       m[3][0]=a.m[3][0]*b.m[0][0] + a.m[3][1]*b.m[1][0] + a.m[3][2]*b.m[2][0] + a.m[3][3]*b.m[3][0];
 480       m[3][1]=a.m[3][0]*b.m[0][1] + a.m[3][1]*b.m[1][1] + a.m[3][2]*b.m[2][1] + a.m[3][3]*b.m[3][1];
 481       m[3][2]=a.m[3][0]*b.m[0][2] + a.m[3][1]*b.m[1][2] + a.m[3][2]*b.m[2][2] + a.m[3][3]*b.m[3][2];
 482       m[3][3]=a.m[3][0]*b.m[0][3] + a.m[3][1]*b.m[1][3] + a.m[3][2]*b.m[2][3] + a.m[3][3]*b.m[3][3];
 483    }
 484 };
 485 #endif
 486
 487 // Our own matrix stack
 488 static Matrix matrixStack[3][32];
 489 static int matrixIndex[3];
 490 static int curStack = 0;
 491
 492 #if defined(_GLES)
 493
 494    // OpenGL ES Porting Kit
 495 #if defined(__ANDROID__) || defined(__ODROID__)
 496    #define glBindFramebuffer        glBindFramebufferOES
 497    #define glBindRenderbuffer       glBindRenderbufferOES
 498    #define GL_FRAMEBUFFER           GL_FRAMEBUFFER_OES
 499    #define GL_RENDERBUFFER          GL_RENDERBUFFER_OES
 500    #define glFramebufferTexture2D   glFramebufferTexture2DOES
 501    #define GL_COLOR_ATTACHMENT0     GL_COLOR_ATTACHMENT0_OES
 502    #define glGenFramebuffers        glGenFramebuffersOES
 503    #define glGenRenderbuffers       glGenRenderbuffersOES
 504    #define glDeleteFramebuffers     glDeleteFramebuffersOES
 505    #define glDeleteRenderbuffers    glDeleteRenderbuffersOES
 506
 507    #define GL_POLYGON_STIPPLE 0xFFFF
 508    #define GL_LINE_STIPPLE 0xFFFF
 509    #define GL_LINE 0xFFFF
 510    #define GL_FILL 0xFFFF
 511    #define GL_ALL_ATTRIB_BITS 0xFFFF
 512    #define GL_LIGHT_MODEL_LOCAL_VIEWER 0xFFFF
 513    #define GL_INT                                  0x1404
 514    #define GL_UNSIGNED_INT                         0x1405
 515    #define GL_DOUBLE                               0x140A
 516    #define GL_POLYGON      9
 517    #define GL_QUADS        7
 518    #define APIENTRY
 519 #endif
 520
 521    #define glDrawElementsi(type, count, start)  glDrawElements(type, count, GL_UNSIGNED_SHORT, start)
 522
 523    #define glBufferDatai         glesBufferDatai
 524    #define glBufferDatad         glesBufferDatad
 525    #define glVertexPointeri      glesVertexPointeri
 526    #define glVertexPointerd      glesVertexPointerd
 527
 528    #define glRecti               glesRecti
 529    #define glBegin               glesBegin
 530    #define glTexCoord2i          glesTexCoord2i
 531    #define glVertex2i            glesVertex2i
 532    #define glTexCoord2d          glesTexCoord2d
 533    #define glVertex2d            glesVertex2d
 534    #define glTexCoord2f          glesTexCoord2f
 535    #define glVertex2f            glesVertex2f
 536    #define glEnd                 glesEnd
 537    #define glColor3f             glesColor3f
 538    #define glColor4ub            glesColor4ub
 539    #define glColor4fv            glesColor4fv
 540    #define glLineStipple         glesLineStipple
 541    #define glNormal3fv           glesNormal3fv
 542    #define glNormal3f            glesNormal3f
 543    #define glTexCoord2fv         glesTexCoord2fv
 544    #define glColorMaterial       glesColorMaterial
 545
 546    #define glLoadMatrixd         glesLoadMatrixd
 547    #define glMultMatrixd         glesMultMatrixd
 548    #define glFrustum             glesFrustum
 549    #define glOrtho               glesOrtho
 550    #define glScaled              glesScaled
 551    #define glTranslated          glesTranslated
 552    #define glRotated             glesRotated
 553    #define glVertex3d            glesVertex3d
 554    #define glVertex3dv           glesVertex3dv
 555    #define glVertex3f            glesVertex3f
 556    #define glVertex3fv           glesVertex3fv
 557    #define glLightModeli         glesLightModeli
 558
 559 #if defined(__ANDROID__)
 560    //#define GL_QUADS              0
 561    #define GL_QUAD_STRIP         0
 562    //#define GL_DOUBLE             0
 563    //#define GL_UNSIGNED_INT       0
 564    //#define GL_FILL               0
 565    //#define GL_LINE               0
 566    //#define GL_LINE_STIPPLE       0
 567    #define GL_BGRA_EXT           0
 568    #define GL_UNPACK_ROW_LENGTH  0
 569    #define GL_UNPACK_SKIP_PIXELS 0
 570    #define GL_UNPACK_SKIP_ROWS   0
 571    #define GL_RGBA8              0
 572    #define GL_PACK_ROW_LENGTH    0
 573    #define GL_PACK_SKIP_ROWS     0
 574    #define GL_PACK_SKIP_PIXELS   0
 575 #endif
 576
 577 #else
 578
 579 #define glVertexPointerd(nc, s, p, nv)       glVertexPointer(nc, GL_DOUBLE, s, p)
 580 #define glDrawElementsi(type, count, start)  glDrawElements(type, count, GL_UNSIGNED_INT, start)
 581
 582 #endif
 583
 584 #if defined(__ANDROID__) || defined(__ODROID__)
 585    static EGLDisplay eglDisplay;
 586    static EGLSurface eglSurface;
 587    static EGLContext eglContext;
 588    static int eglWidth, eglHeight;
 589
 590 #if defined(__ANDROID__)
 591    static bool egl_init_display(ANativeWindow* window)
 592 #else
 593    static bool egl_init_display(uint window)
 594 #endif
 595    {
 596       const EGLint attribs[] =
 597       {
 598          EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
 599          EGL_BLUE_SIZE, 8,
 600          EGL_GREEN_SIZE, 8,
 601          EGL_RED_SIZE, 8,
 602          EGL_DEPTH_SIZE, 16, //24,
 603          /*EGL_SAMPLE_BUFFERS, 1,
 604          EGL_SAMPLES, 0, //2,*/
 605          EGL_NONE
 606       };
 607       EGLint w, h, format;
 608       EGLint numConfigs;
 609       EGLConfig config;
 610       EGLSurface surface;
 611       EGLContext context;
 612
 613       EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
 614       eglInitialize(display, 0, 0);
 615       eglChooseConfig(display, attribs, &config, 1, &numConfigs);
 616       eglGetConfigAttrib(display, config, EGL_NATIVE_VISUAL_ID, &format);
 617
 618       surface = eglCreateWindowSurface(display, config, window, null);
 619       context = eglCreateContext(display, config, null, null);
 620
 621       if(!eglMakeCurrent(display, surface, surface, context))
 622          return false;
 623
 624       eglQuerySurface(display, surface, EGL_WIDTH, &w);
 625       eglQuerySurface(display, surface, EGL_HEIGHT, &h);
 626
 627       eglDisplay = display;
 628       eglContext = context;
 629       eglSurface = surface;
 630       eglWidth = w;
 631       eglHeight = h;
 632
 633       glEnableClientState(GL_VERTEX_ARRAY);
 634       /*
 635       // Initialize GL state.
 636       glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
 637       glEnable(GL_CULL_FACE);
 638       glShadeModel(GL_SMOOTH);
 639       glDisable(GL_DEPTH_TEST);
 640       */
 641       glDisable(GL_CULL_FACE);
 642       glDisable(GL_DEPTH_TEST);
 643
 644       glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 645       glEnable(GL_BLEND);
 646
 647       matrixStack[0][0].Identity();
 648       matrixStack[1][0].Identity();
 649       matrixStack[2][0].Identity();
 650
 651       glesMatrixMode(GL_MODELVIEW);
 652       glScaled(1.0, 1.0, -1.0);
 653       glesMatrixMode(GL_PROJECTION);
 654       glShadeModel(GL_FLAT);
 655
 656       glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
 657       glFogi(GL_FOG_MODE, GL_EXP);
 658       glFogf(GL_FOG_DENSITY, 0);
 659       glEnable(GL_NORMALIZE);
 660       glDepthFunc(GL_LESS);
 661       glClearDepth(1.0);
 662       glDisable(GL_MULTISAMPLE_ARB);
 663
 664       glViewport(0,0,w,h);
 665       glesLoadIdentity();
 666       glOrtho(0,w,h,0,0.0,1.0);
 667
 668       curArrayBuffer = 0;
 669       curElementBuffer = 0;
 670       return true;
 671    }
 672
 673    static void egl_term_display()
 674    {
 675       if(stippleTexture)
 676       {
 677          glDeleteTextures(1, &stippleTexture);
 678          stippleTexture = 0;
 679       }
 680       if(eglDisplay != EGL_NO_DISPLAY)
 681       {
 682          eglMakeCurrent(eglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
 683          if(eglContext != EGL_NO_CONTEXT)
 684             eglDestroyContext(eglDisplay, eglContext);
 685          if(eglSurface != EGL_NO_SURFACE)
 686             eglDestroySurface(eglDisplay, eglSurface);
 687          eglTerminate(eglDisplay);
 688       }
 689       eglDisplay = EGL_NO_DISPLAY;
 690       eglContext = EGL_NO_CONTEXT;
 691       eglSurface = EGL_NO_SURFACE;
 692    }
 693
 694 #endif
 695
 696 // OpenGL Immediate Mode Porting Kit
 697 static int beginCount;
 698 static int vertexCount;
 699 static int normalCount;
 700 static float *vertexPointer;
 701 static float *normalPointer;
 702 static GLenum beginMode = -1;
 703 static uint beginBufferSize, normalBufferSize;
 704 static int numVertexCoords = 2;
 705 static bool vertexColorValues = false;
 706 static int vertexStride = 4;
 707 static int vertexOffset = 2;
 708
 709 public void glesRecti(int a, int b, int c, int d)
 710 {
 711    glBegin(GL_QUADS);
 712    glVertex2i(a, b);
 713    glVertex2i(a, d);
 714    glVertex2i(c, d);
 715    glVertex2i(c, b);
 716    glEnd();
 717 }
 718
 719 public void glesBegin(GLenum mode)
 720 {
 721    beginMode = mode;
 722    beginCount = 0;
 723    vertexCount = 0;
 724    vertexColorValues = false;
 725    vertexOffset = 2;
 726    vertexStride = 4;
 727    numVertexCoords = 2;
 728
 729    if(!vertexPointer)
 730    {
 731       normalBufferSize = beginBufferSize = 1024;  // default number of vertices
 732       vertexPointer = new float[beginBufferSize * vertexStride];
 733       normalPointer = new float[normalBufferSize * 3];
 734    }
 735 }
 736
 737 public void glesTexCoord2f(float x, float y)
 738 {
 739    int count = vertexCount;
 740
 741    if(vertexCount + numVertexCoords > beginBufferSize)
 742    {
 743       beginBufferSize = beginBufferSize + beginBufferSize/2;
 744       vertexPointer = renew vertexPointer float[beginBufferSize * vertexStride];
 745    }
 746
 747    vertexPointer[count*vertexStride  ] = x;
 748    vertexPointer[count*vertexStride+1] = y;
 749    count++;
 750
 751    if(beginMode == GL_QUADS && ((beginCount % 4) == 3))
 752    {
 753       vertexPointer[count*vertexStride  ] = vertexPointer[(count-4)*vertexStride];
 754       vertexPointer[count*vertexStride+1] = vertexPointer[(count-4)*vertexStride+1];
 755       count++;
 756       vertexPointer[count*vertexStride  ] = vertexPointer[(count-3)*vertexStride];
 757       vertexPointer[count*vertexStride+1] = vertexPointer[(count-3)*vertexStride+1];
 758       count++;
 759    }
 760 }
 761 public void glesTexCoord2i(int x, int y)       { glesTexCoord2f((float)x, (float)y); }
 762 public void glesTexCoord2d(double x, double y) { glesTexCoord2f((float)x, (float)y); }
 763 public void glesTexCoord2fv(float * a)         { glesTexCoord2f(a[0], a[1]); }
 764
 765 public void glesVertex2f(float x, float y)
 766 {
 767    numVertexCoords = 2;
 768    vertexStride = vertexOffset + numVertexCoords;
 769
 770    if(vertexCount + 4 > beginBufferSize)
 771    {
 772       beginBufferSize = beginBufferSize + beginBufferSize/2;
 773       vertexPointer = renew vertexPointer float[beginBufferSize * vertexStride];
 774    }
 775
 776    vertexPointer[vertexCount*vertexStride+vertexOffset] = x;
 777    vertexPointer[vertexCount*vertexStride+vertexOffset + 1] = y;
 778    vertexCount++;
 779
 780    if(beginMode == GL_QUADS && ((beginCount % 4) == 3))
 781    {
 782       vertexPointer[vertexCount*vertexStride+vertexOffset] = vertexPointer[(vertexCount-4)*vertexStride+vertexOffset];
 783       vertexPointer[vertexCount*vertexStride+vertexOffset + 1] = vertexPointer[(vertexCount-4)*vertexStride+vertexOffset + 1];
 784       vertexCount++;
 785       vertexPointer[vertexCount*vertexStride+vertexOffset] = vertexPointer[(vertexCount-3)*vertexStride+vertexOffset];
 786       vertexPointer[vertexCount*vertexStride+vertexOffset + 1] = vertexPointer[(vertexCount-3)*vertexStride+vertexOffset + 1];
 787       vertexCount++;
 788    }
 789    beginCount++;
 790 }
 791 public void glesVertex2i(int x, int y)         { glesVertex2f((float)x, (float)y); }
 792 public void glesVertex2d(double x, double y)   { glesVertex2f((float)x, (float)y); }
 793
 794 public void glesEnd(void)
 795 {
 796    int mode = beginMode;
 797    if(mode == GL_QUADS)        mode = GL_TRIANGLES;
 798    else if(mode == GL_POLYGON) mode = GL_TRIANGLE_FAN;
 799
 800    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 801    noAB.use(texCoord, 2, GL_FLOAT, vertexStride * sizeof(float), vertexPointer);
 802    if(vertexColorValues)
 803    {
 804       glEnableClientState(GL_COLOR_ARRAY);
 805       noAB.use(color, 4, GL_FLOAT, vertexStride * sizeof(float), vertexPointer + 2);
 806    }
 807    noAB.use(vertex, numVertexCoords, GL_FLOAT, (vertexStride)*sizeof(float),vertexPointer+vertexOffset);
 808    if(normalCount && normalCount == vertexCount)
 809    {
 810       glEnableClientState(GL_NORMAL_ARRAY);
 811       noAB.use(normal, 3, GL_FLOAT, 3*sizeof(float),normalPointer);
 812    }
 813
 814    glDrawArrays(mode, 0, vertexCount);
 815    if(normalCount)
 816       glDisableClientState(GL_NORMAL_ARRAY);
 817    if(vertexColorValues)
 818       glDisableClientState(GL_COLOR_ARRAY);
 819    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
 820    normalCount = 0;
 821    vertexColorValues = false;
 822    numVertexCoords = 2;
 823    beginMode = -1;
 824 }
 825
 826 // Vertex Pointer
 827 static float *floatVPBuffer = null;
 828 static short *shortVPBuffer = null;
 829 static unsigned int shortVPSize = 0, floatVPSize = 0;
 830
 831 // Buffer Data
 832 //static float *floatVPBuffer = null;  // For floats we reuse floatVPBuffer
 833 static unsigned short *shortBDBuffer = null;
 834 static unsigned int shortBDSize = 0/*, floatVPSize = 0*/;
 835
 836 public void glesVertexPointeri(int numCoords, int stride, int *pointer, int numVertices)
 837 {
 838    if(pointer)
 839    {
 840       int i;
 841       if(numVertices*numCoords > shortVPSize)
 842       {
 843          shortVPSize = numVertices*numCoords;
 844          shortVPBuffer = renew shortVPBuffer short[shortVPSize];
 845       }
 846       for(i = 0; i < numVertices*numCoords; i++)
 847          shortVPBuffer[i] = (short)pointer[i];
 848       glVertexPointer(numCoords, GL_SHORT, stride, shortVPBuffer);
 849    }
 850    else
 851       glVertexPointer(numCoords, GL_SHORT, stride, 0);
 852 }
 853
 854 public void glesVertexPointerd(int numCoords, int stride, double *pointer, int numVertices)
 855 {
 856    if(pointer)
 857    {
 858       int i;
 859       if(numVertices*numCoords > floatVPSize)
 860       {
 861          floatVPSize = numVertices*numCoords;
 862          floatVPBuffer = renew floatVPBuffer float[floatVPSize];
 863       }
 864       for(i = 0; i < numVertices*numCoords; i++)
 865          floatVPBuffer[i] = (float)pointer[i];
 866       glVertexPointer(numCoords, GL_FLOAT, stride, floatVPBuffer);
 867    }
 868    else
 869       glVertexPointer(numCoords, GL_FLOAT, stride, 0);
 870 }
 871
 872 public void glesTexReuseIntVP(int numCoords)
 873 {
 874    glTexCoordPointer(numCoords, GL_SHORT, 0, floatVPBuffer);
 875 }
 876
 877 public void glesTexReuseDoubleVP(int numCoords)
 878 {
 879    glTexCoordPointer(numCoords, GL_FLOAT, 0, floatVPBuffer);
 880 }
 881
 882 public void glesColor4f(float r, float g, float b, float a)
 883 {
 884    if(beginMode != (GLenum)-1)
 885    {
 886       int count = vertexCount;
 887
 888       vertexColorValues = true;
 889       vertexOffset = 6;
 890       vertexStride = vertexOffset + numVertexCoords;
 891
 892       if(vertexCount + vertexStride > beginBufferSize)
 893       {
 894          beginBufferSize = beginBufferSize + beginBufferSize/2;
 895          vertexPointer = renew vertexPointer float[beginBufferSize * vertexStride];
 896       }
 897
 898       vertexPointer[count*vertexStride + 2] = r;
 899       vertexPointer[count*vertexStride + 3] = g;
 900       vertexPointer[count*vertexStride + 4] = b;
 901       vertexPointer[count*vertexStride + 5] = a;
 902       count++;
 903
 904       if(beginMode == GL_QUADS && ((beginCount % 4) == 3))
 905       {
 906          vertexPointer[count*vertexStride + 2] = vertexPointer[(count-4) * vertexStride + 2];
 907          vertexPointer[count*vertexStride + 3] = vertexPointer[(count-4) * vertexStride + 3];
 908          vertexPointer[count*vertexStride + 4] = vertexPointer[(count-4) * vertexStride + 4];
 909          vertexPointer[count*vertexStride + 5] = vertexPointer[(count-4) * vertexStride + 5];
 910          count++;
 911          vertexPointer[count*vertexStride + 2] = vertexPointer[(count-3) * vertexStride + 2];
 912          vertexPointer[count*vertexStride + 3] = vertexPointer[(count-3) * vertexStride + 3];
 913          vertexPointer[count*vertexStride + 4] = vertexPointer[(count-3) * vertexStride + 4];
 914          vertexPointer[count*vertexStride + 5] = vertexPointer[(count-3) * vertexStride + 5];
 915          count++;
 916       }
 917    }
 918    else
 919       glColor4f(r, g, b, a);
 920 }
 921
 922 public void glesColor3f( float r, float g, float b )
 923 {
 924    glesColor4f(r, g, b, 1.0f);
 925 }
 926
 927 public void glesColor4ub(unsigned char r, unsigned char g, unsigned char b, unsigned char a)
 928 {
 929    glesColor4f(r/255.0f, g/255.0f, b/255.0f, a/255.0f);
 930 }
 931
 932 public void glesColor4fv(float * a)
 933 {
 934    glesColor4f(a[0], a[1], a[2], a[3]);
 935 }
 936
 937 public void glesBufferDatad(int target, int size, void * data, int usage)
 938 {
 939    int numElems = size/sizeof(double);
 940    double * dblPtr = (double *)data;
 941    int i;
 942    if (numElems > floatVPSize)
 943    {
 944       floatVPSize = numElems;
 945       floatVPBuffer = renew floatVPBuffer float[floatVPSize];
 946    }
 947    for (i=0; i< numElems; i++)
 948       floatVPBuffer[i] = (float)dblPtr[i];
 949
 950    glBufferData(target, numElems*sizeof(float), floatVPBuffer, usage);
 951 }
 952
 953 public void glesBufferDatai(int target, int size, void * data, int usage)
 954 {
 955    int numElems = size/sizeof(unsigned int);
 956    unsigned int * pointer = (unsigned int *)data;
 957    int i;
 958    if (numElems > shortBDSize)
 959    {
 960       shortBDSize = numElems;
 961       shortBDBuffer = renew shortBDBuffer uint16[shortBDSize];
 962    }
 963    for (i=0; i< numElems; i++)
 964       shortBDBuffer[i] = (unsigned short)pointer[i];
 965
 966    glBufferData(target, numElems*sizeof(unsigned short), shortBDBuffer, usage);
 967 }
 968
 969 // *** Our Custom Matrix Stack ***
 970
 971 static void LoadCurMatrix()
 972 {
 973    double * i = matrixStack[curStack][matrixIndex[curStack]].array;
 974    float m[16] =
 975    {
 976       (float)i[0],(float)i[1],(float)i[2],(float)i[3],
 977       (float)i[4],(float)i[5],(float)i[6],(float)i[7],
 978       (float)i[8],(float)i[9],(float)i[10],(float)i[11],
 979       (float)i[12],(float)i[13],(float)i[14],(float)i[15]
 980    };
 981    glLoadMatrixf(m);
 982 }
 983
 984 public void glesLoadIdentity()
 985 {
 986    matrixStack[curStack][matrixIndex[curStack]].Identity();
 987    LoadCurMatrix();
 988 }
 989
 990 public void glesPushMatrix()
 991 {
 992    if(matrixIndex[curStack] + 1 < sizeof(matrixStack[0]) / sizeof(Matrix))
 993    {
 994       matrixIndex[curStack]++;
 995       memcpy(matrixStack[curStack][matrixIndex[curStack]].array, matrixStack[curStack][matrixIndex[curStack]-1].array, sizeof(Matrix));
 996    }
 997 }
 998
 999 public void glesPopMatrix()
1000 {
1001    if(matrixIndex[curStack] > 0)
1002    {
1003       matrixIndex[curStack]--;
1004       LoadCurMatrix();
1005    }
1006 }
1007
1008 public void glesLoadMatrixd(double * i)
1009 {
1010    memcpy(matrixStack[curStack][matrixIndex[curStack]].array, i, sizeof(Matrix));
1011    LoadCurMatrix();
1012 }
1013
1014 public void glesOrtho( double l, double r, double b, double t, double n, double f )
1015 {
1016    Matrix m
1017    { {
1018       (2 / (r - l)), 0, 0, 0,
1019       0, (2 / (t - b)), 0, 0,
1020       0, 0, (-2 / (f - n)), 0,
1021       (-(r + l) / (r - l)), (-(t + b) / (t - b)), (-(f + n) / (f - n)), 1
1022    } };
1023    Matrix res;
1024    res.Multiply(m, matrixStack[curStack][matrixIndex[curStack]]);
1025    matrixStack[curStack][matrixIndex[curStack]] = res;
1026    LoadCurMatrix();
1027 }
1028
1029 public void glesFrustum( double l, double r, double b, double t, double n, double f )
1030 {
1031    nearPlane = n;
1032    n = 1;
1033    l /= nearPlane;
1034    r /= nearPlane;
1035    b /= nearPlane;
1036    t /= nearPlane;
1037    f /= nearPlane;
1038    {
1039       double A = ((r + l) / (r - l));
1040       double B = ((t + b) / (t - b));
1041       double C = (-(f + n) / (f - n));
1042       double D = (-2*f*n/(f-n));
1043       Matrix m
1044       { {
1045          (2.0*n / (r - l)), 0, 0, 0,
1046          0, (2.0*n / (t - b)), 0, 0,
1047          A, B,             C,-1,
1048          0, 0,             D, 0
1049       } };
1050       Matrix res;
1051       res.Multiply(m, matrixStack[curStack][matrixIndex[curStack]]);
1052       matrixStack[curStack][matrixIndex[curStack]] = res;
1053       LoadCurMatrix();
1054    }
1055 }
1056
1057 public void glesRotated( double a, double b, double c, double d )
1058 {
1059    Quaternion q;
1060    Matrix m, r;
1061
1062    q.RotationAxis({(float)b,(float)c,(float)-d}, a );
1063    m.RotationQuaternion(q);
1064    r.Multiply(m, matrixStack[curStack][matrixIndex[curStack]]);
1065    matrixStack[curStack][matrixIndex[curStack]] = r;
1066    LoadCurMatrix();
1067 }
1068 public void glesScaled( double a, double b, double c )
1069 {
1070    Matrix m, r;
1071
1072    m.Identity();
1073    m.Scale(a,b,c);
1074    r.Multiply(m, matrixStack[curStack][matrixIndex[curStack]]);
1075    matrixStack[curStack][matrixIndex[curStack]] = r;
1076    LoadCurMatrix();
1077 }
1078
1079 public void glesTranslated( double a, double b, double c )
1080 {
1081    Matrix m, r;
1082
1083    m.Identity();
1084    m.Translate(a,b,c);
1085    r.Multiply(m, matrixStack[curStack][matrixIndex[curStack]]);
1086    matrixStack[curStack][matrixIndex[curStack]] = r;
1087    LoadCurMatrix();
1088 }
1089
1090 public void glesMultMatrixd( double * i )
1091 {
1092    Matrix r;
1093    r.Multiply((Matrix *)i, matrixStack[curStack][matrixIndex[curStack]]);
1094    matrixStack[curStack][matrixIndex[curStack]] = r;
1095    LoadCurMatrix();
1096 }
1097
1098 public void glesMatrixMode(int mode)
1099 {
1100    curStack = (mode == GL_MODELVIEW) ? 0 : (mode == GL_PROJECTION) ? 1 : 2;
1101    glMatrixMode(mode);
1102 }
1103
1104 #if defined(_GLES)
1105
1106 #define glPushMatrix          glesPushMatrix
1107 #define glPopMatrix           glesPopMatrix
1108 #define glLoadIdentity        glesLoadIdentity
1109 #define glMatrixMode          glesMatrixMode
1110
1111 #endif
1112
1113 /* Using the built-in matrix stack
1114 void glesLoadMatrixd( double * i )
1115 {
1116    float m[16] =
1117    {
1118       (float)i[0],(float)i[1],(float)i[2],(float)i[3],
1119       (float)i[4],(float)i[5],(float)i[6],(float)i[7],
1120       (float)i[8],(float)i[9],(float)i[10],(float)i[11],
1121       (float)i[12],(float)i[13],(float)i[14],(float)i[15]
1122    };
1123    glLoadMatrixf(m);
1124 }
1125
1126 void glesOrtho( double l, double r, double b, double t, double n, double f )
1127 {
1128    float matrix[4][4] =
1129    {
1130       { (float)(2 / (r - l)), 0, 0, 0 },
1131       { 0, (float)(2 / (t - b)), 0, 0 },
1132       { 0, 0, (float)(-2 / (f - n)), 0 },
1133       { (float)(-(r + l) / (r - l)), (float)(-(t + b) / (t - b)), (float)(-(f + n) / (f - n)), 1 }
1134    };
1135    glMultMatrixf((float *)matrix);
1136 }
1137
1138 void glesFrustum( double l, double r, double b, double t, double n, double f )
1139 {
1140    float A = (float)((r + l) / (r - l));
1141    float B = (float)((t + b) / (t - b));
1142    float C = (float)(-(f + n) / (f - n));
1143    float D = (float)(-2*f*n/(f-n));
1144    float matrix[4][4] =
1145    {
1146       { (float)(2*n / (r - l)), 0, 0, 0 },
1147       { 0, (float)(2*n / (t - b)), 0, 0 },
1148       { A, B,             C,-1 },
1149       { 0, 0,             D, 0 }
1150    };
1151    glMultMatrixf((float *)matrix);
1152 }
1153
1154 void glesRotated( double a, double b, double c, double d ) { glRotatef((float)a, (float)b, (float)c, (float)d); }
1155 void glesScaled( double a, double b, double c ) { glScalef((float)a, (float)b, (float)c); }
1156 void glesTranslated( double a, double b, double c ) { glTranslatef((float)a, (float)b, (float)c); }
1157
1158 void glesMultMatrixd( double * i )
1159 {
1160    float m[16] =
1161    {
1162       (float)i[0], (float)i[1], (float)i[2], (float)i[3],
1163       (float)i[4], (float)i[5], (float)i[6], (float)i[7],
1164       (float)i[8], (float)i[9], (float)i[10], (float)i[11],
1165       (float)i[12], (float)i[13], (float)i[14], (float)i[15]
1166    };
1167    glMultMatrixf(m);
1168 }
1169 */
1170
1171 // Need to do these...
1172 public void glesVertex3f( float x, float y, float z )
1173 {
1174    numVertexCoords = 3;
1175    vertexStride = vertexOffset + numVertexCoords;
1176
1177    if(vertexCount + vertexStride > beginBufferSize)
1178    {
1179       beginBufferSize = beginBufferSize + beginBufferSize/2;
1180       vertexPointer = renew vertexPointer float[beginBufferSize * vertexStride];
1181    }
1182
1183    vertexPointer[vertexCount*vertexStride+vertexOffset] = x;
1184    vertexPointer[vertexCount*vertexStride+vertexOffset+1] = y;
1185    vertexPointer[vertexCount*vertexStride+vertexOffset+2] = z;
1186    vertexCount++;
1187
1188    if(beginMode == GL_QUADS && ((beginCount % 4) == 3))
1189    {
1190       vertexPointer[vertexCount*vertexStride+vertexOffset] = vertexPointer[(vertexCount-4)*vertexStride+vertexOffset];
1191       vertexPointer[vertexCount*vertexStride+vertexOffset+1] = vertexPointer[(vertexCount-4)*vertexStride+vertexOffset+1];
1192       vertexPointer[vertexCount*vertexStride+vertexOffset+2] = vertexPointer[(vertexCount-4)*vertexStride+vertexOffset+2];
1193       vertexCount++;
1194       vertexPointer[vertexCount*vertexStride+vertexOffset] = vertexPointer[(vertexCount-3)*vertexStride+vertexOffset];
1195       vertexPointer[vertexCount*vertexStride+vertexOffset+1] = vertexPointer[(vertexCount-3)*vertexStride+vertexOffset+1];
1196       vertexPointer[vertexCount*vertexStride+vertexOffset+2] = vertexPointer[(vertexCount-3)*vertexStride+vertexOffset+2];
1197       vertexCount++;
1198    }
1199    beginCount++;
1200 }
1201
1202 public void glesVertex3d( double x, double y, double z )  { glesVertex3f((float)x, (float)y, (float)z); }
1203 public void glesVertex3fv( float* coords )                { glesVertex3f(coords[0], coords[1], coords[2]); }
1204 public void glesVertex3dv( double* coords )               { glesVertex3f((float)coords[0], (float)coords[1], (float)coords[2]); }
1205
1206 public void glesNormal3f(float x, float y, float z)
1207 {
1208    normalCount = vertexCount;
1209    if(vertexCount + 4 > normalBufferSize)
1210    {
1211       normalBufferSize = normalBufferSize + normalBufferSize/2;
1212       normalPointer = renew normalPointer float[normalBufferSize * 2];
1213    }
1214
1215    normalPointer[normalCount*3+0] = x;
1216    normalPointer[normalCount*3+1] = y;
1217    normalPointer[normalCount*3+2] = z;
1218    normalCount++;
1219
1220    if(beginMode == GL_QUADS && ((beginCount % 4) == 3))
1221    {
1222       normalPointer[normalCount*3+0] = normalPointer[(normalCount-4)*3+0];
1223       normalPointer[normalCount*3+1] = normalPointer[(normalCount-4)*3+1];
1224       normalPointer[normalCount*3+2] = normalPointer[(normalCount-4)*3+2];
1225       normalCount++;
1226       normalPointer[normalCount*3+0] = normalPointer[(normalCount-3)*3+0];
1227       normalPointer[normalCount*3+1] = normalPointer[(normalCount-3)*3+1];
1228       normalPointer[normalCount*3+2] = normalPointer[(normalCount-3)*3+2];
1229       normalCount++;
1230    }
1231 }
1232 public void glesNormal3fd(double x, double y, double z)         { glesNormal3f((float)x, (float)y, (float)z); }
1233 public void glesNormal3fv(float * coords)                       { glesNormal3f(coords[0], coords[1], coords[2]); }
1234
1235 public void glesColorMaterial(int a, int b)
1236 {
1237    PrintLn("glColorMaterial stub");
1238 }
1239
1240 public void glesTerminate()
1241 {
1242    delete vertexPointer;
1243    delete normalPointer;
1244    beginBufferSize = 0;
1245
1246    delete floatVPBuffer;
1247    shortVPSize = 0;
1248
1249    delete shortVPBuffer;
1250    floatVPSize = 0;
1251
1252    delete shortBDBuffer;
1253    shortBDSize = 0;
1254 }
1255
1256 static GLuint stippleTexture;
1257 #if defined(_GLES)
1258 static bool stippleEnabled;
1259 #endif
1260
1261 public void glesLineStipple( int i, unsigned short j )
1262 {
1263    uint texture[1*16];
1264    int x;
1265    for(x = 0; x < 16; x++)
1266    {
1267       bool v = (j & (1 << x)) != 0;
1268       texture[x] = v ? 0xFFFFFFFF : 0;
1269    }
1270    if(!stippleTexture)
1271       glGenTextures(1, &stippleTexture);
1272    glBindTexture(GL_TEXTURE_2D, stippleTexture);
1273    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 16, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, texture);
1274    glEnable(GL_TEXTURE_2D);
1275    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
1276    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
1277    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
1278    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
1279    glMatrixMode(GL_TEXTURE);
1280    glLoadIdentity();
1281    //glTranslated(1.0/backAttrib->texW/2.0f, 1.0/backAttrib->texH/2.0f, 0.0f);
1282    glScaled(i/16.0, 1, 1.0f);
1283    glTranslated(0.5, 0.5, 0);
1284    glMatrixMode(GL_PROJECTION);
1285 }
1286
1287 public void glesLightModeli( unsigned int pname, int param )
1288 {
1289    if(pname == GL_LIGHT_MODEL_TWO_SIDE)
1290       glLightModelf(GL_LIGHT_MODEL_TWO_SIDE, param);
1291 }
1292
1293 #if defined(__ANDROID__) || defined(__ODROID__)
1294 void glClearDepth( double depth ) { glClearDepthf((float)depth); }
1295 void glFogi( unsigned int pname, int param ) { }
1296 void glPolygonMode( unsigned int i, unsigned int j ) { }
1297
1298
1299 // *** Picking won't be supported for now ***
1300 void glPushName( unsigned int i ) { }
1301 void glLoadName( unsigned int i ) { }
1302 void glPopName() { }
1303
1304 // Probably replace by regular glBlendFunc ...
1305 void glBlendFuncSeparate(int a, int b, int c, int d)
1306 {
1307    glBlendFunc(a, b);
1308 }
1309
1310 // For direct pixel blitting...
1311 void glRasterPos2d(double a, double b) { }
1312 void glPixelZoom(float a, float b) { }
1313 void glDrawPixels(int a, int b, int c, int d, void * e) { }
1314
1315 #endif
1316
1317 #if !defined(__APPLE__) && !defined(__WIN32__) && !defined(__ODROID__)
1318 void (APIENTRY * glBindBufferARB) (GLenum target, GLuint buffer);
1319 void (APIENTRY * glGenBuffersARB) (GLsizei n, GLuint *buffers);
1320 void (APIENTRY * glDeleteBuffersARB) (GLsizei n, const GLuint *buffers);
1321 void (APIENTRY * glBufferDataARB) (GLenum target, int size, const GLvoid *data, GLenum usage);
1322 #endif
1323
1324 public void GLLoadMatrix(Matrix matrix)
1325 {
1326    float m[16] =
1327    {
1328       (float)matrix.m[0][0], (float)matrix.m[0][1], (float)matrix.m[0][2], (float)matrix.m[0][3],
1329       (float)matrix.m[1][0], (float)matrix.m[1][1], (float)matrix.m[1][2], (float)matrix.m[1][3],
1330       (float)matrix.m[2][0], (float)matrix.m[2][1], (float)matrix.m[2][2], (float)matrix.m[2][3],
1331       (float)matrix.m[3][0], (float)matrix.m[3][1], (float)matrix.m[3][2], (float)matrix.m[3][3]
1332    };
1333    glLoadMatrixf(m);
1334 }
1335
1336 public enum GLBufferContents { vertex, normal, texCoord, color };
1337
1338 public define noAB = GLAB { 0 };
1339
1340 static uint curArrayBuffer;
1341
1342 public struct GLAB
1343 {
1344    uint buffer;
1345
1346    void upload(uint size, void * data)
1347    {
1348       if(this != null)
1349       {
1350          if(!buffer)
1351             GLGenBuffers(1, this);
1352          if(curArrayBuffer != buffer)
1353             GLBindBuffer(GL_ARRAY_BUFFER, buffer);
1354          glBufferData(GL_ARRAY_BUFFER, size, data, GL_STATIC_DRAW);  //GL_DYNAMIC_DRAW);
1355       }
1356    }
1357
1358    void free()
1359    {
1360       if(this != null)
1361       {
1362          GLDeleteBuffers(1, this);
1363          buffer = 0;
1364       }
1365    }
1366
1367    void use(GLBufferContents contents, int n, int type, uint stride, void * pointer)
1368    {
1369       if(curArrayBuffer != ((this != null) ? buffer : 0))
1370          GLBindBuffer(GL_ARRAY_BUFFER, ((this != null) ? buffer : 0));
1371       switch(contents)
1372       {
1373          case normal:   glNormalPointer(type, stride, pointer); break;
1374          case vertex:   glVertexPointer(n, type, stride, pointer); break;
1375          case texCoord: glTexCoordPointer(n, type, stride, pointer); break;
1376          case color:    glColorPointer(n, type, stride, pointer); break;
1377       }
1378    }
1379
1380    void useVertTrans(uint count, int n, int type, uint stride, void * pointer)
1381    {
1382       if(curArrayBuffer != ((this != null) ? buffer : 0))
1383          GLBindBuffer(GL_ARRAY_BUFFER, ((this != null) ? buffer : 0));
1384       if(type == GL_INT)
1385          glVertexPointeri(n, stride, pointer, count);
1386       else if(type == GL_DOUBLE)
1387          glVertexPointerd(n, stride, pointer, count);
1388    }
1389 };
1390
1391 static uint curElementBuffer;
1392
1393 public define noEAB = GLEAB { 0 };
1394
1395 public struct GLEAB
1396 {
1397    uint buffer;
1398
1399    void upload(uint size, void * data)
1400    {
1401       if(this != null)
1402       {
1403          if(!buffer)
1404             GLGenBuffers(1, (GLAB *)this);
1405
1406          if(curElementBuffer != buffer)
1407             GLBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer);
1408          glBufferData(GL_ELEMENT_ARRAY_BUFFER, size, data, GL_STATIC_DRAW);  //GL_DYNAMIC_DRAW);
1409       }
1410    }
1411
1412    void free()
1413    {
1414       if(this != null)
1415       {
1416          GLDeleteBuffers(1, (GLAB *)this);
1417          buffer = 0;
1418       }
1419    }
1420
1421    void draw(int primType, int count, int type, void * indices)
1422    {
1423       if(curElementBuffer != ((this != null) ? buffer : 0))
1424          GLBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ((this != null) ? buffer : 0));
1425       glDrawElements(primType, count, type, indices);
1426    }
1427 };
1428
1429 public void GLGenBuffers(int count, GLAB * buffers)
1430 {
1431 #if defined(__ANDROID__) || defined(__ODROID__)
1432    glGenBuffers(count, (GLuint *)buffers);
1433 #else
1434 #if defined(__WIN32__)
1435    if(glGenBuffersARB)
1436 #endif
1437       glGenBuffersARB(count, (GLuint *)buffers);
1438 #endif
1439 }
1440
1441 public void GLDeleteBuffers(int count, GLAB * buffers)
1442 {
1443    int i;
1444    for(i = 0; i < count; i++)
1445    {
1446       uint buffer = buffers[i].buffer;
1447       if(buffer == curArrayBuffer)
1448          GLBindBuffer(GL_ARRAY_BUFFER_ARB, 0);
1449       else if(buffer == curElementBuffer)
1450          GLBindBuffer(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
1451    }
1452 #if defined(__ANDROID__) || defined(__ODROID__)
1453    glDeleteBuffers(count, (GLuint *)buffers);
1454 #else
1455 #if defined(__WIN32__)
1456    if(glDeleteBuffersARB)
1457 #endif
1458       glDeleteBuffersARB(count, (GLuint *)buffers);
1459 #endif
1460 }
1461
1462 void GLBindBuffer(int target, uint buffer)
1463 {
1464 #if defined(__ANDROID__) || defined(__ODROID__)
1465    glBindBuffer(target, buffer);
1466 #else
1467 #if defined(__WIN32__)
1468    if(glBindBufferARB)
1469 #endif
1470       glBindBufferARB(target, buffer);
1471 #endif
1472    if(target == GL_ARRAY_BUFFER_ARB)
1473       curArrayBuffer = buffer;
1474    else if(target == GL_ELEMENT_ARRAY_BUFFER_ARB)
1475       curElementBuffer = buffer;
1476 }
1477
1478 public void GLVertexPointer(int numCoords, int glType, int stride, void *ptr, int numVertices)
1479 {
1480 #ifdef _GLES
1481    if(glType == GL_DOUBLE)
1482       glesVertexPointerd(numCoords, stride, ptr, numVertices);
1483    else if(glType == GL_INT)
1484       glesVertexPointeri(numCoords, stride, ptr, numVertices);
1485    else
1486 #endif
1487       glVertexPointer(numCoords, glType, stride, ptr);
1488 }
1489
1490 public void GLBufferData(int type, GLenum target, int size, const GLvoid *data, GLenum usage)
1491 {
1492 #ifdef _GLES
1493    if(type == GL_DOUBLE)
1494       glesBufferDatad(target, size, (void *)data, usage);
1495    else if(type == GL_UNSIGNED_INT)
1496       glesBufferDatai(target, size, (void *)data, usage);
1497    else
1498 #endif
1499
1500 #if defined(__ANDROID__) || defined(__ODROID__)
1501       glBufferData(target, size, data, usage);
1502 #else
1503
1504 #if defined(__WIN32__)
1505    if(glBufferDataARB)
1506 #endif
1507       glBufferDataARB(target, size, data, usage);
1508 #endif
1509 }
1510
1511 #if !defined(ECERE_NO3D) && !defined(ECERE_VANILLA)
1512 static int primitiveTypes[RenderPrimitiveType] =
1513 {
1514    GL_POINTS, GL_LINES, GL_TRIANGLES, GL_TRIANGLE_STRIP, GL_TRIANGLE_FAN, GL_QUADS, GL_QUAD_STRIP, GL_LINE_STRIP
1515 };
1516 #endif
1517
1518
1519 // Non OpenGL ES friendly stuff
1520
1521 #if defined(_GLES)
1522
1523 //#undef GL_UNSIGNED_INT
1524 //#undef GL_DOUBLE
1525 #undef GL_INT
1526 //#undef GL_POLYGON
1527 //#undef GL_QUADS
1528 #undef GL_QUAD_STRIP
1529 #undef GL_POLYGON_STIPPLE
1530 #undef GL_LINE_STIPPLE
1531 #undef GL_LINE
1532 #undef GL_FILL
1533 #undef GL_ALL_ATTRIB_BITS
1534 #undef GL_LIGHT_MODEL_LOCAL_VIEWER
1535
1536 #endif
1537
1538 static int displayWidth, displayHeight;
1539
1540 #define GL_CLAMP_TO_EDGE 0x812F
1541
1542 static bool vboAvailable;
1543
1544 static bool useSingleGLContext = false;
1545 class OGLDisplay : struct
1546 {
1547 #if defined(__WIN32__)
1548    HDC hdc;
1549    HGLRC glrc;
1550
1551    HBITMAP memBitmap;
1552    HDC memDC;
1553    byte * picture;
1554    uint stride;
1555    void * pBuffer;
1556    /*
1557    int imageBuffers[2];
1558    byte * pboMemory1, * pboMemory2;
1559    */
1560 #elif !defined(__ANDROID__) && !defined(__ODROID__)
1561    GLXContext glContext;
1562
1563    Pixmap pixmap;
1564    XShmSegmentInfo shminfo;
1565    XImage * image;
1566    XShmSegmentInfo shminfoShape;
1567    XImage * shapeImage;
1568    byte * picture;
1569    uint stride;
1570    GLXPbuffer pBuffer;
1571    X11Picture windowPicture;
1572    X11Picture pixmapPicture;
1573    Pixmap shapePixmap;
1574    X11Picture shapePicture;
1575 #endif
1576
1577    ColorAlpha * flippingBuffer;
1578    int flipBufH, flipBufW;
1579    bool depthWrite;
1580    int x, y;
1581 };
1582
1583 class OGLSystem : struct
1584 {
1585    int maxTextureSize;
1586    bool loadingFont;
1587    bool pow2textures;
1588 #if defined(__WIN32__)
1589    PIXELFORMATDESCRIPTOR pfd;
1590    int format;
1591    HDC hdc;
1592    HGLRC glrc;
1593    HWND hwnd;
1594 #elif !defined(__ANDROID__) && !defined(__ODROID__)
1595    XVisualInfo * visualInfo;
1596    GLXContext glContext;
1597    GLXDrawable glxDrawable;
1598 #endif
1599 };
1600
1601 class OGLSurface : struct
1602 {
1603    Font font;
1604    bool opaqueText;
1605    int xOffset;
1606    bool writingText;
1607
1608    float foreground[4], background[4], bitmapMult[4];
1609 } OGLSurface;
1610
1611 class OGLMesh : struct
1612 {
1613    GLAB vertices;
1614    GLAB normals;
1615    GLAB texCoords;
1616    GLAB texCoords2;
1617    GLAB colors;
1618 };
1619
1620 class OGLIndices : struct
1621 {
1622    uint16 * indices;
1623    GLEAB buffer;
1624    uint nIndices;
1625 };
1626
1627 int current;
1628 void * previous;
1629
1630 class OpenGLDisplayDriver : DisplayDriver
1631 {
1632    class_property(name) = "OpenGL";
1633
1634    bool LockSystem(DisplaySystem displaySystem)
1635    {
1636 #if !defined(__ANDROID__) && !defined(__ODROID__)
1637       OGLSystem oglSystem = displaySystem.driverData;
1638       if(useSingleGLContext) return true;
1639    #if defined(__WIN32__)
1640       wglMakeCurrent(oglSystem.hdc, oglSystem.glrc);
1641    #elif defined(__unix__) || defined(__APPLE__)
1642       //if(previous) return true;
1643       // printf("Making SYSTEM current\n");
1644       glXMakeCurrent(xGlobalDisplay, (GLXDrawable)oglSystem.glxDrawable, oglSystem.glContext);
1645       //previous = oglSystem.glContext;
1646    #endif
1647 #endif
1648       return true;
1649    }
1650
1651    void UnlockSystem(DisplaySystem displaySystem)
1652    {
1653       if(useSingleGLContext) return;
1654    #if defined(__WIN32__)
1655       wglMakeCurrent(null, null);
1656    #elif defined(__unix__) || defined(__APPLE__)
1657       // printf("Making NULL current\n");
1658       #if defined(__ANDROID__) || defined(__ODROID__)
1659       #else
1660       glXMakeCurrent(xGlobalDisplay, None, null);
1661       #endif
1662       // previous = null;
1663    #endif
1664    }
1665
1666    bool Lock(Display display)
1667    {
1668 #if !defined(__ANDROID__) && !defined(__ODROID__)
1669       OGLDisplay oglDisplay = display.driverData;
1670       if(useSingleGLContext) return true;
1671    #if defined(__WIN32__)
1672       wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
1673    #elif defined(__unix__) || defined(__APPLE__)
1674       // if(previous) glXMakeCurrent(xGlobalDisplay, None, null);
1675       // printf("   Making DISPLAY current\n");
1676       glXMakeCurrent(xGlobalDisplay, (GLXDrawable)display.window, oglDisplay.glContext);
1677    #endif
1678 #endif
1679       return true;
1680    }
1681
1682    void Unlock(Display display)
1683    {
1684       if(useSingleGLContext) return;
1685       //printf("   Making NULL current\n");
1686       //glXMakeCurrent(xGlobalDisplay, None, null);
1687       // if(previous)
1688          LockSystem(display.displaySystem);
1689    }
1690
1691    void DestroyDisplay(Display display)
1692    {
1693       OGLDisplay oglDisplay = display.driverData;
1694
1695       if(oglDisplay)
1696       {
1697    #if defined(__WIN32__)
1698          wglMakeCurrent( null, null );
1699
1700          if(oglDisplay.glrc)
1701             wglDeleteContext(oglDisplay.glrc);
1702
1703          if(oglDisplay.hdc && oglDisplay.pBuffer)
1704             wglReleasePbufferDCARB(oglDisplay.pBuffer, oglDisplay.hdc);
1705
1706          if(oglDisplay.pBuffer)
1707             wglDestroyPbufferARB(oglDisplay.pBuffer);
1708
1709          if(oglDisplay.hdc)
1710             ReleaseDC(display.window, oglDisplay.hdc);
1711
1712          if(oglDisplay.memDC) DeleteDC(oglDisplay.memDC);
1713          if(oglDisplay.memBitmap) DeleteObject(oglDisplay.memBitmap);
1714
1715    #elif defined(__unix__) || defined(__APPLE__)
1716       #if defined(__ANDROID__) || defined(__ODROID__)
1717       #else
1718          if(oglDisplay.shapePixmap)
1719             XFreePixmap(xGlobalDisplay, oglDisplay.shapePixmap);
1720          if(oglDisplay.pixmap)
1721             XFreePixmap(xGlobalDisplay, oglDisplay.pixmap);
1722          if(oglDisplay.image)
1723          {
1724             if(oglDisplay.shminfoShape.shmid != -1)
1725             {
1726                XShmDetach(xGlobalDisplay, &oglDisplay.shminfo);
1727                if(oglDisplay.shminfo.shmaddr != (void *)-1)
1728                   shmdt(oglDisplay.shminfo.shmaddr);
1729                shmctl(oglDisplay.shminfo.shmid, IPC_RMID, 0);
1730             }
1731          }
1732          if(oglDisplay.shapeImage)
1733          {
1734             if(oglDisplay.shminfoShape.shmid != -1)
1735             {
1736                XShmDetach(xGlobalDisplay, &oglDisplay.shminfoShape);
1737                if(oglDisplay.shminfoShape.shmaddr != (void *)-1)
1738                   shmdt(oglDisplay.shminfoShape.shmaddr);
1739                shmctl(oglDisplay.shminfoShape.shmid, IPC_RMID, 0);
1740             }
1741             XDestroyImage(oglDisplay.shapeImage);
1742             oglDisplay.shapeImage = None;
1743          }
1744
1745          glXMakeCurrent(xGlobalDisplay, None, null);
1746
1747          if(oglDisplay.glContext)
1748             glXDestroyContext(xGlobalDisplay, oglDisplay.glContext);
1749       #endif
1750    #endif
1751          delete oglDisplay.flippingBuffer;
1752          delete oglDisplay;
1753          display.driverData = null;
1754       }
1755    }
1756
1757    void ::CheckExtensions(OGLSystem oglSystem)
1758    {
1759       const char * extensions = (const char *)glGetString(GL_EXTENSIONS);
1760       if(extensions)
1761          oglSystem.pow2textures = strstr(extensions, "GL_ARB_texture_non_power_of_two") ? false : true;
1762       glGetIntegerv(GL_MAX_TEXTURE_SIZE, &oglSystem.maxTextureSize);
1763    }
1764
1765    bool CreateDisplaySystem(DisplaySystem displaySystem)
1766    {
1767       bool result = false;
1768       OGLSystem oglSystem = displaySystem.driverData = OGLSystem { };
1769
1770    #ifdef __WIN32__
1771       oglSystem.hwnd = CreateWindow("static", null, 0,0,0,0,0,null,null,null,null);
1772
1773       oglSystem.hdc = GetDC(oglSystem.hwnd);
1774       if(oglSystem.hdc)
1775       {
1776
1777          oglSystem.pfd.nSize = (short)sizeof(oglSystem.pfd);
1778          oglSystem.pfd.nVersion = 1;
1779          oglSystem.pfd.dwFlags = PFD_DRAW_TO_WINDOW /*PFD_DRAW_TO_BITMAP*/ | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
1780          oglSystem.pfd.iPixelType = PFD_TYPE_RGBA;
1781          oglSystem.pfd.cColorBits = 24;
1782          oglSystem.pfd.cAlphaBits = 8;
1783          oglSystem.pfd.cDepthBits = 24;
1784          oglSystem.pfd.iLayerType = PFD_MAIN_PLANE;
1785
1786          oglSystem.format = ChoosePixelFormat(oglSystem.hdc, &oglSystem.pfd);
1787          DescribePixelFormat(oglSystem.hdc, oglSystem.format, sizeof(oglSystem.pfd), &oglSystem.pfd);
1788
1789          if(oglSystem.pfd.cColorBits > 8)
1790          {
1791             SetPixelFormat(oglSystem.hdc, oglSystem.format, &oglSystem.pfd);
1792             oglSystem.glrc = wglCreateContext(oglSystem.hdc);
1793             if(oglSystem.glrc)
1794             {
1795                wglMakeCurrent(oglSystem.hdc, oglSystem.glrc);
1796
1797                  // Get Pointers To The GL Functions
1798                glActiveTextureARB = (void *) wglGetProcAddress("glActiveTextureARB");
1799                glMultiTexCoord2fARB = (void *) wglGetProcAddress("glMultiTexCoord2fARB");
1800                glClientActiveTextureARB = (void *) wglGetProcAddress("glClientActiveTextureARB");
1801                glLockArraysEXT = (void *) wglGetProcAddress("glLockArraysEXT" );
1802                glUnlockArraysEXT = (void *) wglGetProcAddress("glUnlockArraysEXT");
1803                  glGenBuffersARB = (void *) wglGetProcAddress("glGenBuffersARB");
1804                  glBindBufferARB = (void *) wglGetProcAddress("glBindBufferARB");
1805                  glBufferDataARB = (void *) wglGetProcAddress("glBufferDataARB");
1806                glMapBufferARB  = (void *) wglGetProcAddress("glMapBufferARB");
1807                glUnmapBufferARB  = (void *) wglGetProcAddress("glUnmapBufferARB");
1808                  glDeleteBuffersARB = (void *) wglGetProcAddress("glDeleteBuffersARB");
1809                glBlendFuncSeparate = (void *) wglGetProcAddress("glBlendFuncSeparate");
1810
1811                wglChoosePixelFormatARB = (void *) wglGetProcAddress("wglChoosePixelFormatARB");
1812                wglGetExtensionsStringARB = (void *)wglGetProcAddress("wglGetExtensionsStringARB");
1813                wglCreatePbufferARB = (void *)wglGetProcAddress("wglCreatePbufferARB");
1814                wglGetPbufferDCARB = (void *)wglGetProcAddress("wglGetPbufferDCARB");
1815                wglQueryPbufferARB = (void *)wglGetProcAddress("wglQueryPbufferARB");
1816                wglDestroyPbufferARB = (void *)wglGetProcAddress("wglDestroyPbufferARB");
1817                wglReleasePbufferDCARB = (void *)wglGetProcAddress("wglReleasePbufferDCARB");
1818                wglBindTexImageARB = (void *)wglGetProcAddress("wglBindTexImageARB");
1819                wglReleaseTexImageARB = (void *)wglGetProcAddress("wglReleaseTexImageARB");
1820
1821                wglSwapIntervalEXT = (void *)wglGetProcAddress("wglSwapIntervalEXT");
1822
1823                vboAvailable = glBindBufferARB != null;
1824
1825                // eSystem_LoggingMode(LOG_MSGBOX, null);
1826
1827                if(wglChoosePixelFormatARB)
1828                {
1829                     int pixelFormat;
1830                     int valid;
1831                     int numFormats;
1832                     float fAttributes[] = {0,0};
1833                     int iAttributes[] =
1834                   {
1835                      WGL_DRAW_TO_WINDOW_ARB,GL_TRUE,
1836                             WGL_SUPPORT_OPENGL_ARB,GL_TRUE,
1837                             WGL_ACCELERATION_ARB,WGL_FULL_ACCELERATION_ARB,
1838                             WGL_COLOR_BITS_ARB,24,
1839                             WGL_ALPHA_BITS_ARB,8,
1840                             WGL_DEPTH_BITS_ARB,16,
1841                             WGL_STENCIL_BITS_ARB,0,
1842                             WGL_DOUBLE_BUFFER_ARB,GL_TRUE,
1843                             WGL_SAMPLE_BUFFERS_ARB,GL_TRUE,
1844                             WGL_SAMPLES_ARB, 4,                                         // Check For 4x Multisampling
1845                             0,0
1846                   };
1847
1848                   //Log("Found wglChoosePixelFormatARB\n");
1849
1850                     valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1851                     if(!valid || !numFormats)
1852                     {
1853                      //Log("Can't find 4x multi sampling\n");
1854                        iAttributes[19] = 2;
1855                        valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1856                      if(!valid || !numFormats)
1857                      {
1858                         // Log("Can't find 2x multi sampling\n");
1859                         iAttributes[16] = 0;
1860                         iAttributes[17] = 0;
1861                         valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1862                      }
1863                     }
1864                   if(valid && numFormats)
1865                   {
1866                      oglSystem.format = pixelFormat;
1867                      wglMakeCurrent(null, null);
1868                      wglDeleteContext(oglSystem.glrc);
1869
1870                      // *** DescribePixelFormat does not support WGL pixel formats! ***
1871                      //DescribePixelFormat(oglSystem.hdc, oglSystem.format, sizeof(oglSystem.pfd), &oglSystem.pfd);
1872                      SetPixelFormat(oglSystem.hdc, oglSystem.format, &oglSystem.pfd);
1873                      //Log("Successfully set pixel format\n");
1874
1875                      oglSystem.glrc = wglCreateContext(oglSystem.hdc);
1876                      wglMakeCurrent(oglSystem.hdc, oglSystem.glrc);
1877                   }
1878                }
1879                /*else
1880                   eSystem_Logf("Can't find wglChoosePixelFormatARB\n");*/
1881
1882                result = true;
1883
1884                CheckExtensions(oglSystem);
1885
1886                wglMakeCurrent(null, null);
1887
1888                //eSystem_DumpErrors(true);
1889             }
1890          }
1891       }
1892    #elif defined(__unix__) || defined(__APPLE__)
1893       vboAvailable = true;
1894       #if defined(__ANDROID__)
1895          egl_init_display(guiApp.desktop.windowHandle);
1896       #elif defined(__ODROID__)
1897          egl_init_display((uint)displaySystem.window);
1898          CheckExtensions(oglSystem);
1899          result = true;
1900       #else
1901       {
1902          X11Window root = RootWindow( xGlobalDisplay, DefaultScreen( xGlobalDisplay ) );
1903          XSetWindowAttributes attr;
1904          unsigned long mask;
1905
1906          int attrList[] =
1907          {
1908       #ifndef ECERE_MINIGLX
1909             GLX_USE_GL, GLX_DEPTH_SIZE, 1,
1910       #endif
1911             GLX_RGBA,
1912             GLX_RED_SIZE, 1, GLX_GREEN_SIZE, 1, GLX_BLUE_SIZE, 1,
1913             GLX_DOUBLEBUFFER,
1914             None
1915          };
1916          oglSystem.visualInfo = glXChooseVisual( xGlobalDisplay,  DefaultScreen( xGlobalDisplay ), attrList );
1917          attr.background_pixel = 0;
1918          attr.border_pixel = 0;
1919          attr.colormap = XCreateColormap( xGlobalDisplay, root, oglSystem.visualInfo->visual, AllocNone);
1920          attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
1921          mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
1922
1923          oglSystem.glxDrawable = XCreateWindow( xGlobalDisplay, root, 0, 0, 1, 1, 0, oglSystem.visualInfo->depth, InputOutput,
1924             oglSystem.visualInfo->visual, mask, &attr );
1925       }
1926       if(oglSystem.visualInfo)
1927       {
1928          oglSystem.glContext = glXCreateContext(xGlobalDisplay, oglSystem.visualInfo, null, True);
1929          if(oglSystem.glContext)
1930          {
1931             glXMakeCurrent(xGlobalDisplay, oglSystem.glxDrawable, oglSystem.glContext);
1932             // Setup Extensions
1933             CheckExtensions(oglSystem);
1934             glXMakeCurrent(xGlobalDisplay, None, null);
1935             result = true;
1936          }
1937       }
1938       #endif
1939    #endif
1940
1941       displaySystem.flags.alpha = true;
1942       displaySystem.flags.flipping = true;
1943       displaySystem.pixelFormat = pixelFormat888;
1944       return result;
1945    }
1946
1947    void DestroyDisplaySystem(DisplaySystem displaySystem)
1948    {
1949       OGLSystem oglSystem = displaySystem.driverData;
1950
1951    #if defined(__WIN32__)
1952       wglMakeCurrent( null, null );
1953
1954       if(oglSystem.glrc)
1955          wglDeleteContext(oglSystem.glrc);
1956
1957       if(oglSystem.hdc)
1958          ReleaseDC(oglSystem.hwnd, oglSystem.hdc);
1959       DestroyWindow(oglSystem.hwnd);
1960
1961    #elif defined(__unix__) || defined(__APPLE__)
1962       #if defined(__ANDROID__) || defined(__ODROID__)
1963          egl_term_display();
1964       #else
1965       if(oglSystem.visualInfo)
1966       {
1967    #ifdef   ECERE_MINIGLX
1968          __miniglx_XFree(oglSystem.visualInfo);
1969    #else
1970          XFree(oglSystem.visualInfo);
1971    #endif
1972       }
1973
1974       if(oglSystem.glxDrawable)
1975       {
1976          XDestroyWindow(xGlobalDisplay, oglSystem.glxDrawable);
1977          oglSystem.glxDrawable = 0;
1978       }
1979       #endif
1980    #endif
1981       delete oglSystem;
1982    }
1983
1984    bool CreateDisplay(Display display)
1985    {
1986       bool result = false;
1987       OGLDisplay oglDisplay = display.driverData;
1988 #if !defined(__ANDROID__) && !defined(__ODROID__)
1989       OGLSystem oglSystem = display.displaySystem.driverData;
1990 #endif
1991       if(!oglDisplay)
1992          oglDisplay = display.driverData = OGLDisplay { };
1993       //printf("Inside CreateDisplay\n");
1994
1995 #if defined(__WIN32__) || defined(USEPBUFFER)
1996       if(!display.alphaBlend)
1997 #endif
1998       {
1999    #if defined(__WIN32__)
2000          oglDisplay.hdc = GetDC(display.window);
2001          SetPixelFormat(oglDisplay.hdc, oglSystem.format, &oglSystem.pfd);
2002          if((oglDisplay.glrc = wglCreateContext(oglDisplay.hdc)))
2003          {
2004             wglShareLists(oglSystem.glrc, oglDisplay.glrc);
2005             wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
2006             result = true;
2007          }
2008          else
2009             ReleaseDC(display.window, oglDisplay.hdc);
2010    #elif defined(__unix__) || defined(__APPLE__)
2011       #if defined(__ANDROID__) || defined(__ODROID__)
2012       #else
2013          XVisualInfo * visualInfo = ((XWindowData)display.windowDriverData).visual;
2014          /*
2015 #if defined(__APPLE__)
2016          XVisualInfo template = { 0 };
2017          XWindowAttributes winAttr;
2018          int n;
2019          XGetWindowAttributes(xGlobalDisplay, (X11Window)display.window, &winAttr);
2020          template.visualid = XVisualIDFromVisual(winAttr.visual);
2021          visualInfo = XGetVisualInfo(xGlobalDisplay, VisualIDMask, &template, &n);
2022 #ifdef _DEBUG
2023          printf("XGetVisualInfo visual ID = %d\n", template.visualid);
2024          printf("visualInfo visual ID = %d\n", visualInfo->visualid);
2025          printf("oglSystem.visualInfo visual ID = %d\n", oglSystem.visualInfo->visualid);
2026          printf("((XWindowData)display.windowDriverData).visual visual ID = %d\n", ((XWindowData)display.windowDriverData).visual->visualid);
2027 #endif
2028          // visualInfo = oglSystem.visualInfo;
2029 //#endif
2030          */
2031          if(visualInfo)
2032          {
2033             //printf("visualInfo is not null\n");
2034             // printf("Creating Display Context, sharing with %x!\n", oglSystem.glContext);
2035             oglDisplay.glContext = glXCreateContext(xGlobalDisplay, visualInfo, oglSystem.glContext, True);
2036             //XFree(visualInfo);
2037          }
2038
2039          // oglDisplay.glContext = glXCreateContext(xGlobalDisplay, oglSystem.visualInfo, oglSystem.glContext, True);
2040          if(oglDisplay.glContext)
2041          {
2042             //printf("CreateDisplay Got a Context\n");
2043             glXMakeCurrent(xGlobalDisplay, (GLXDrawable)display.window, oglDisplay.glContext);
2044             result = true;
2045          }
2046       #endif
2047    #endif
2048       }
2049 #if defined(__WIN32__) || defined(USEPBUFFER)
2050       else
2051          result = true;
2052 #endif
2053       if(result)
2054       {
2055 #if defined(__WIN32__)
2056          if(glBlendFuncSeparate)
2057             glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
2058          else
2059             glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2060 #else
2061 #if !defined(__OLDX__)
2062           glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
2063 #else
2064          glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2065 #endif
2066 #endif
2067          glEnable(GL_BLEND);
2068
2069          glMatrixMode(GL_MODELVIEW);
2070          glScaled(1.0, 1.0, -1.0);
2071          // glTranslatef(0.375f, 0.375f, 0.0f);
2072          // glTranslatef(-0.625f, -0.625f, 0.0f);
2073          glMatrixMode(GL_PROJECTION);
2074          glShadeModel(GL_FLAT);
2075
2076          // glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, true);
2077          glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
2078          glFogi(GL_FOG_MODE, GL_EXP);
2079          glFogf(GL_FOG_DENSITY, 0);
2080          glEnable(GL_NORMALIZE);
2081          glDepthFunc(GL_LESS);
2082          glClearDepth(1.0);
2083          glDisable(GL_MULTISAMPLE_ARB);
2084       }
2085 #if !defined(ECERE_NO3D) && !defined(ECERE_VANILLA)
2086       display.ambient = Color { 50,50,50 };
2087 #endif
2088
2089       if(!useSingleGLContext)
2090       {
2091    #if defined(__WIN32__)
2092          wglMakeCurrent(null, null);
2093    #elif defined(__unix__) || defined(__APPLE__)
2094       #if defined(__ANDROID__) || defined(__ODROID__)
2095          result = true;
2096       #else
2097          glXMakeCurrent(xGlobalDisplay, None, null);
2098       #endif
2099    #endif
2100       }
2101       else
2102       {
2103       #if defined(__ANDROID__) || defined(__EMSCRIPTEN__) || defined(__ODROID__)
2104          result = true;
2105       #endif
2106       }
2107
2108       return result;
2109    }
2110
2111    bool DisplaySize(Display display, int width, int height)
2112    {
2113       OGLDisplay oglDisplay = display.driverData;
2114
2115       bool result = false;
2116
2117       //printf("Inside DisplaySize\n");
2118 #if defined(__WIN32__) || defined(USEPBUFFER)
2119       OGLSystem oglSystem = display.displaySystem.driverData;
2120       if(display.alphaBlend)
2121       {
2122 #if defined(__WIN32__)
2123          const int attributes[]=
2124          {
2125             /*WGL_TEXTURE_FORMAT_ARB, WGL_TEXTURE_RGBA_ARB,
2126             WGL_TEXTURE_TARGET_ARB, WGL_TEXTURE_2D_ARB, */0
2127          };
2128          int pixelFormat = 0;
2129          if(wglChoosePixelFormatARB)
2130          {
2131             int valid;
2132             int numFormats;
2133             float fAttributes[] = {0,0};
2134             int iAttributes[] =
2135             {
2136                //WGL_DRAW_TO_BITMAP_ARB, GL_TRUE,
2137                WGL_DRAW_TO_PBUFFER_ARB,GL_TRUE,
2138                     WGL_SUPPORT_OPENGL_ARB,GL_TRUE,
2139                     WGL_ACCELERATION_ARB,WGL_FULL_ACCELERATION_ARB,
2140                     WGL_COLOR_BITS_ARB,24,
2141                     WGL_ALPHA_BITS_ARB,8,
2142                     WGL_DEPTH_BITS_ARB,16,
2143                     WGL_STENCIL_BITS_ARB,0,
2144                     WGL_DOUBLE_BUFFER_ARB,GL_FALSE,
2145                     WGL_SAMPLE_BUFFERS_ARB,GL_TRUE,
2146                     WGL_SAMPLES_ARB, 4,                                         // Check For 4x Multisampling
2147                     0,0
2148             };
2149
2150             //Log("Found wglChoosePixelFormatARB\n");
2151
2152             valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
2153             if(!valid || !numFormats)
2154             {
2155                //Log("Can't find 4x multi sampling\n");
2156                iAttributes[19] = 2;
2157                valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
2158                if(!valid || !numFormats)
2159                {
2160                   // Log("Can't find 2x multi sampling\n");
2161                   iAttributes[16] = 0;
2162                   iAttributes[17] = 0;
2163                   valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
2164                   if(!valid || !numFormats)
2165                   {
2166                      int iAttributes[] =
2167                      {
2168                         WGL_DRAW_TO_PBUFFER_ARB,GL_TRUE,
2169                         //WGL_DRAW_TO_BITMAP_ARB,GL_TRUE,
2170                         WGL_SUPPORT_OPENGL_ARB,GL_TRUE,
2171                         WGL_COLOR_BITS_ARB,24,
2172                         WGL_ALPHA_BITS_ARB,8,
2173                         WGL_DEPTH_BITS_ARB,16,
2174                         0,0
2175                      };
2176                      valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
2177                   }
2178                }
2179             }
2180             if(valid && numFormats)
2181             {
2182                wglMakeCurrent(null, null);
2183             }
2184          }
2185
2186          wglMakeCurrent( null, null );
2187          wglMakeCurrent( oglDisplay.hdc, oglDisplay.glrc );
2188          if(oglDisplay.hdc && oglDisplay.pBuffer)
2189             wglReleasePbufferDCARB(oglDisplay.pBuffer, oglDisplay.hdc);
2190
2191          wglDestroyPbufferARB(oglDisplay.pBuffer);
2192
2193          if(!useSingleGLContext)
2194             wglMakeCurrent( null, null );
2195
2196          if(oglDisplay.glrc)
2197             wglDeleteContext(oglDisplay.glrc);
2198
2199          oglDisplay.pBuffer = wglCreatePbufferARB(oglSystem.hdc, pixelFormat, width, height, attributes);
2200          oglDisplay.hdc = wglGetPbufferDCARB(oglDisplay.pBuffer);
2201          if((oglDisplay.glrc = wglCreateContext(oglDisplay.hdc)))
2202          {
2203             BITMAPINFO * info;
2204             HDC hdc = GetDC(display.window);
2205
2206             wglShareLists(oglSystem.glrc, oglDisplay.glrc);
2207             wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
2208
2209             //wglQueryPbufferARB(pBuffer, WGL_PBUFFER_WIDTH_ARB, &width);
2210             //wglQueryPbufferARB(pBuffer, WGL_PBUFFER_HEIGHT_ARB, &height);
2211
2212             // glDeleteBuffersARB(2, oglDisplay.imageBuffers);
2213
2214             if((info = (BITMAPINFO *)new0 byte[sizeof(BITMAPINFOHEADER)+sizeof(RGBQUAD)*256]))
2215             {
2216                HBITMAP newBitmap;
2217
2218                if(oglDisplay.memDC) DeleteDC(oglDisplay.memDC);
2219                oglDisplay.memDC = CreateCompatibleDC(hdc);
2220                SetMapMode(oglDisplay.memDC, MM_TEXT);
2221                info->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
2222                info->bmiHeader.biPlanes = 1;
2223                info->bmiHeader.biCompression = BI_RGB;
2224                info->bmiHeader.biBitCount = 32; //(uint16)GetDeviceCaps(hdc, BITSPIXEL);
2225                info->bmiHeader.biWidth = width;
2226                info->bmiHeader.biHeight = height;
2227                newBitmap = CreateDIBSection(hdc, info, DIB_RGB_COLORS, &oglDisplay.picture, null, 0);
2228                if(newBitmap)
2229                {
2230                   SelectObject(oglDisplay.memDC, newBitmap);
2231                   if(oglDisplay.memBitmap) DeleteObject(oglDisplay.memBitmap);
2232                   /*
2233                   {
2234                      PIXELFORMATDESCRIPTOR pfd = { 0 };
2235                      pfd.nSize = (short)sizeof(pfd);
2236                      pfd.nVersion = 1;
2237                      pfd.dwFlags = PFD_DRAW_TO_BITMAP | PFD_SUPPORT_OPENGL;
2238                      pfd.iPixelType = PFD_TYPE_RGBA;
2239                      pfd.cColorBits = 32;
2240                      //pfd.cAlphaBits = 8;
2241                      pfd.cDepthBits = 24;
2242                      pfd.iLayerType = PFD_MAIN_PLANE;
2243
2244                      oglDisplay.hdc = oglDisplay.memDC;
2245
2246                      pixelFormat = ChoosePixelFormat(oglSystem.hdc, &pfd);
2247                      DescribePixelFormat(oglDisplay.hdc, pixelFormat, sizeof(pfd), &pfd);
2248                      SetPixelFormat(oglDisplay.hdc, pixelFormat, &pfd);
2249
2250                      oglDisplay.glrc = wglCreateContext(oglDisplay.hdc);
2251                      wglShareLists(oglSystem.glrc, oglDisplay.glrc);
2252                      wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
2253                   }
2254                   */
2255                   /*
2256                   {
2257                      const int imageSize = width * height * 4;
2258
2259                      glGenBuffersARB(2, oglDisplay.imageBuffers);
2260
2261                      glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2262                      glBufferDataARB(GL_PIXEL_PACK_BUFFER_ARB, imageSize, null, GL_STREAM_READ);
2263                      // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2264                      // glBufferDataARB(GL_PIXEL_PACK_BUFFER_ARB, imageSize / 2, null, GL_STREAM_READ);
2265                   }
2266                   */
2267                   oglDisplay.memBitmap = newBitmap;
2268                   oglDisplay.stride = width;
2269
2270                   result = true;
2271                }
2272                delete info;
2273             }
2274             ReleaseDC(display.window, hdc);
2275          }
2276 #elif defined(__unix__) || defined(__APPLE__)
2277       #if defined(__ANDROID__) || defined(__ODROID__)
2278          result = true;
2279       #else
2280         int attrib[] =
2281         {
2282                 GLX_DOUBLEBUFFER,  True,
2283             GLX_DEPTH_SIZE,    1,
2284                 GLX_RED_SIZE,      8,
2285                 GLX_GREEN_SIZE,    8,
2286                 GLX_BLUE_SIZE,     8,
2287                 GLX_ALPHA_SIZE,    8,
2288                 GLX_STENCIL_SIZE,  1,
2289                 //GLX_DEPTH_SIZE,    24,
2290                 GLX_RENDER_TYPE,   GLX_RGBA_BIT,
2291                 GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT | GLX_WINDOW_BIT,
2292                 None
2293         };
2294
2295         int PBattrib[] =
2296         {
2297                 GLX_PBUFFER_WIDTH,   width,
2298                 GLX_PBUFFER_HEIGHT,  height,
2299                 GLX_LARGEST_PBUFFER, False,
2300             None
2301         };
2302
2303         // choose a pixel format that meets our minimum requirements
2304         int count = 0;
2305
2306         GLXFBConfig *config = glXChooseFBConfig(xGlobalDisplay, DefaultScreen(xGlobalDisplay), attrib, &count);
2307          if(config)
2308          {
2309             if(oglDisplay.pixmap)
2310             {
2311                XFreePixmap(xGlobalDisplay, oglDisplay.pixmap);
2312                oglDisplay.pixmap = None;
2313             }
2314             if(oglDisplay.shapePixmap)
2315             {
2316                XFreePixmap(xGlobalDisplay, oglDisplay.shapePixmap);
2317                oglDisplay.shapePixmap = None;
2318             }
2319
2320             // Free Shared Memory Pixmap
2321             if(oglDisplay.image)
2322             {
2323                if(oglDisplay.shminfoShape.shmid != -1)
2324                {
2325                   XShmDetach(xGlobalDisplay, &oglDisplay.shminfo);
2326                   if(oglDisplay.shminfo.shmaddr != (void *)-1)
2327                      shmdt(oglDisplay.shminfo.shmaddr);
2328                   shmctl(oglDisplay.shminfo.shmid, IPC_RMID, 0);
2329                }
2330                XDestroyImage(oglDisplay.image);
2331                oglDisplay.image = None;
2332             }
2333             if(oglDisplay.shapeImage)
2334             {
2335                if(oglDisplay.shminfoShape.shmid != -1)
2336                {
2337                   XShmDetach(xGlobalDisplay, &oglDisplay.shminfoShape);
2338                   if(oglDisplay.shminfoShape.shmaddr != (void *)-1)
2339                      shmdt(oglDisplay.shminfoShape.shmaddr);
2340                   shmctl(oglDisplay.shminfoShape.shmid, IPC_RMID, 0);
2341                }
2342                XDestroyImage(oglDisplay.shapeImage);
2343                oglDisplay.shapeImage = None;
2344             }
2345
2346             if(oglDisplay.windowPicture)
2347                XRenderFreePicture(xGlobalDisplay, oglDisplay.windowPicture);
2348             if(oglDisplay.pixmapPicture)
2349                XRenderFreePicture(xGlobalDisplay, oglDisplay.pixmapPicture);
2350
2351             if(oglDisplay.pixmap)
2352                XFreePixmap(xGlobalDisplay, oglDisplay.pixmap);
2353
2354             if(oglDisplay.glContext)
2355                   glXDestroyContext(xGlobalDisplay, oglDisplay.glContext);
2356             if(oglDisplay.pBuffer)
2357                glXDestroyPbuffer(xGlobalDisplay, oglDisplay.pBuffer);
2358
2359                 oglDisplay.pBuffer = glXCreatePbuffer(xGlobalDisplay, config[0], PBattrib);
2360             if(oglDisplay.pBuffer)
2361             {
2362                    oglDisplay.glContext = glXCreateNewContext(xGlobalDisplay, config[0], GLX_RGBA_TYPE, oglSystem.glContext, True);
2363                if(oglDisplay.glContext)
2364                {
2365                   glXMakeCurrent(xGlobalDisplay, None, null);
2366                   glXMakeCurrent(xGlobalDisplay, (GLXDrawable)display.window, oglDisplay.glContext);
2367
2368                   // Initialize Shared Memory Pixmap
2369                   oglDisplay.image = XShmCreateImage(xGlobalDisplay, DefaultVisual(xGlobalDisplay, DefaultScreen(xGlobalDisplay)), 32,
2370                      ZPixmap, null, &oglDisplay.shminfo, width, height);
2371                   if(oglDisplay.image)
2372                   {
2373                      oglDisplay.shminfo.shmid = shmget(IPC_PRIVATE,
2374                         oglDisplay.image->bytes_per_line * oglDisplay.image->height, IPC_CREAT|0777);
2375                      if(oglDisplay.shminfo.shmid != -1)
2376                      {
2377                         oglDisplay.shminfo.shmaddr = shmat(oglDisplay.shminfo.shmid, 0, 0);
2378                         if(oglDisplay.shminfo.shmaddr != (void *)-1)
2379                         {
2380                            oglDisplay.shminfo.readOnly = False;
2381                            if(XShmAttach(xGlobalDisplay, &oglDisplay.shminfo))
2382                            {
2383                               oglDisplay.pixmap = XShmCreatePixmap(xGlobalDisplay, (X11Window)display.window, oglDisplay.shminfo.shmaddr,
2384                                  &oglDisplay.shminfo, width, height, 32);
2385
2386                               // Initialize Shared Memory Shape Pixmap
2387                               oglDisplay.shapeImage = XShmCreateImage(xGlobalDisplay, DefaultVisual(xGlobalDisplay, DefaultScreen(xGlobalDisplay)), 1,
2388                                  ZPixmap, null, &oglDisplay.shminfoShape, width, height);
2389                               if(oglDisplay.shapeImage)
2390                               {
2391                                  oglDisplay.shminfoShape.shmid = shmget(IPC_PRIVATE,
2392                                     oglDisplay.shapeImage->bytes_per_line * oglDisplay.shapeImage->height, IPC_CREAT|0777);
2393                                  if(oglDisplay.shminfoShape.shmid != -1)
2394                                  {
2395                                     oglDisplay.shminfoShape.shmaddr = shmat(oglDisplay.shminfoShape.shmid, 0, 0);
2396                                     if(oglDisplay.shminfoShape.shmaddr != (void *)-1)
2397                                     {
2398                                        oglDisplay.shminfoShape.readOnly = False;
2399                                        if(XShmAttach(xGlobalDisplay, &oglDisplay.shminfoShape))
2400                                        {
2401                                           oglDisplay.shapePixmap = XShmCreatePixmap(xGlobalDisplay, (X11Window)display.window, oglDisplay.shminfoShape.shmaddr,
2402                                              &oglDisplay.shminfoShape, width, height, 1);
2403                                           //oglDisplay.shapePixmap = XCreatePixmap(xGlobalDisplay, (X11Window)display.window, width, height, 1);
2404
2405                                           {
2406                                              XRenderPictureAttributes attributes = { 0 };
2407                                              XRenderPictFormat * format = XRenderFindStandardFormat(xGlobalDisplay, /*PictStandardRGB24*/ PictStandardARGB32);
2408                                              #if !defined(__APPLE__) && !defined(__OLDX__)
2409                                              attributes.repeat = RepeatNormal;
2410                                              #else
2411                                              attributes.repeat = 1;
2412                                              #endif
2413                                              oglDisplay.pixmapPicture = XRenderCreatePicture(xGlobalDisplay, oglDisplay.pixmap, format, CPRepeat, &attributes);
2414                                              oglDisplay.windowPicture = XRenderCreatePicture(xGlobalDisplay, (X11Window)display.window, format, 0, &attributes);
2415                                              oglDisplay.shapePicture = XRenderCreatePicture(xGlobalDisplay, oglDisplay.shapePixmap,
2416                                                 XRenderFindStandardFormat(xGlobalDisplay, PictStandardA1), 0, &attributes);
2417                                           }
2418
2419                                           oglDisplay.picture = oglDisplay.shminfo.shmaddr;
2420                                           oglDisplay.stride = oglDisplay.image->bytes_per_line / 4;
2421
2422                                           result = true;
2423                                        }
2424                                     }
2425                                  }
2426                               }
2427                            }
2428                         }
2429                      }
2430                   }
2431                }
2432             }
2433             XFree(config);
2434          }
2435      #endif
2436 #endif
2437          CreateDisplay(display);
2438 #if defined(__WIN32__)
2439          wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
2440 #elif defined(__unix__) || defined(__APPLE__)
2441       #if defined(__ANDROID__) || defined(__ODROID__)
2442          width = eglWidth;
2443          height = eglHeight;
2444       #else
2445          glXMakeCurrent(xGlobalDisplay, (GLXDrawable)display.window, oglDisplay.glContext);
2446       #endif
2447 #endif
2448       }
2449       else
2450 #endif
2451          result = true;
2452       if(!result && display.alphaBlend)
2453       {
2454          printf("Alpha blending windows not supported on this display\n");
2455       }
2456       if(!result)
2457          return false;
2458
2459       result = false;
2460
2461       glViewport(0,0,width,height);
2462       glLoadIdentity();
2463       glOrtho(0,width,height,0,0.0,1.0);
2464       displayWidth = display.width = width;
2465       displayHeight = display.height = height;
2466
2467       if(!oglDisplay.flippingBuffer || oglDisplay.flipBufW < width || oglDisplay.flipBufH < height)
2468       {
2469          oglDisplay.flipBufW = width;
2470          oglDisplay.flipBufH = height;
2471 #ifdef _GLES
2472          result = true;
2473 #else
2474          oglDisplay.flippingBuffer = renew oglDisplay.flippingBuffer ColorAlpha [width * height];
2475 #endif
2476       }
2477       if(oglDisplay.flippingBuffer || !width || !height)
2478          result = true;
2479
2480       return result;
2481    }
2482
2483    void DisplayPosition(Display display, int x, int y)
2484    {
2485       OGLDisplay oglDisplay = display.driverData;
2486
2487       oglDisplay.x = x;
2488       oglDisplay.y = y;
2489    }
2490
2491    void SetPalette(Display display, ColorAlpha * palette, bool colorMatch)
2492    {
2493    }
2494
2495    void RestorePalette(Display display)
2496    {
2497    }
2498
2499    void StartUpdate(Display display)
2500    {
2501    }
2502
2503    void EndUpdate(Display display)
2504    {
2505    }
2506
2507    void Scroll(Display display, Box scroll, int x, int y, Extent dirty)
2508    {
2509    }
2510
2511    void Update(Display display, Box updateBox)
2512    {
2513 #if defined(__WIN32__) || defined(USEPBUFFER)
2514       OGLDisplay oglDisplay = display.driverData;
2515 #endif
2516       //Logf("DisplayScreen\n");
2517
2518       glFlush();
2519       glFinish();
2520 #if defined(__WIN32__) || defined(USEPBUFFER)
2521       if(display.alphaBlend)
2522       {
2523          glPixelStorei(GL_PACK_ALIGNMENT, 4);
2524          glPixelStorei(GL_PACK_ROW_LENGTH, oglDisplay.stride);
2525          glPixelStorei(GL_PACK_SKIP_ROWS, 0);
2526          glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
2527          glReadPixels(0,0,display.width,display.height,GL_BGRA_EXT,GL_UNSIGNED_BYTE, oglDisplay.picture);
2528
2529          {
2530 #if defined(__WIN32__)
2531             HDC hdc = GetDC(0);
2532             POINT point = { oglDisplay.x, oglDisplay.y};
2533             POINT srcPoint = { 0, 0 };
2534             BLENDFUNCTION blend = { 0 };
2535             SIZE size;
2536             size.cx = display.width;
2537             size.cy = display.height;
2538             blend.BlendOp = AC_SRC_OVER;
2539             blend.BlendFlags = 0;
2540             blend.SourceConstantAlpha = 255;
2541             blend.AlphaFormat = AC_SRC_ALPHA;
2542
2543             /*
2544             // Process partial images.  Mapping the buffer waits for
2545             // outstanding DMA transfers into the buffer to finish.
2546             glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2547             oglDisplay.pboMemory1 = (byte *)glMapBufferARB(GL_PIXEL_PACK_BUFFER_ARB, GL_READ_ONLY);
2548
2549             // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2550             // oglDisplay.pboMemory2 = (byte *)glMapBufferARB(GL_PIXEL_PACK_BUFFER_ARB,GL_READ_ONLY);
2551
2552
2553             memcpy(oglDisplay.picture, oglDisplay.pboMemory1, display.width * display.height * 4);
2554             //memcpy(oglDisplay.picture + display.width * display.height * 4 / 2, oglDisplay.pboMemory2, display.width * display.height * 4/ 2);
2555             */
2556
2557             UpdateLayeredWindow(display.window, hdc, &point, &size, oglDisplay.memDC, &srcPoint, 0, &blend, ULW_ALPHA);
2558             /*
2559
2560             // Unmap the image buffers
2561             glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2562             glUnmapBufferARB(GL_PIXEL_PACK_BUFFER_ARB);
2563
2564             // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2565             // glUnmapBufferARB(GL_PIXEL_PACK_BUFFER_ARB);
2566
2567             // Bind two different buffer objects and start the glReadPixels
2568             // asynchronously. Each call will return directly after
2569             // starting the DMA transfer.
2570             glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2571             glReadPixels(0, 0, display.width, display.height, GL_BGRA, GL_UNSIGNED_BYTE, 0);
2572
2573             // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2574             // glReadPixels(0, display.height/2, display.width, display.height/2, GL_BGRA, GL_UNSIGNED_BYTE, 0);
2575             */
2576
2577             ReleaseDC(0, hdc);
2578 #elif defined(__unix__) || defined(__APPLE__)
2579       #if defined(__ANDROID__) || defined(__ODROID__)
2580       #else
2581             XTransform transform =
2582             {
2583                {
2584                   { (int)(1.0f * (1<<16)), (int)(0.0f * (1<<16)),  (int)(0 * (1 << 16)) },
2585                   { (int)(0.0f),           (int)(-1.0f * (1<<16)), (int)(0 * (1<<16)) },
2586                   { (int)(0.0f * (1<<16)), (int)(0.0f * (1<<16)),  (int)(1.0f * (1<<16)) }
2587                }
2588             };
2589             XRenderSetPictureTransform(xGlobalDisplay, oglDisplay.pixmapPicture, &transform);
2590             XRenderComposite(xGlobalDisplay, PictOpSrc, oglDisplay.pixmapPicture, None, oglDisplay.shapePicture, 0, 0, 0, 0, 0, 0, display.width, display.height);
2591             XRenderComposite(xGlobalDisplay, PictOpSrc, oglDisplay.pixmapPicture, None, oglDisplay.windowPicture, 0, 0, 0, 0, 0, 0, display.width, display.height);
2592             #if !defined(__APPLE__) && !defined(__OLDX__)
2593             XShapeCombineMask(xGlobalDisplay, (X11Window)display.window, ShapeInput, 0, 0, oglDisplay.shapePixmap, ShapeSet);
2594             #else
2595             XShapeCombineMask(xGlobalDisplay, display.window, 2, 0, 0, oglDisplay.shapePixmap, ShapeSet);
2596             #endif
2597             XFlush(xGlobalDisplay);
2598      #endif
2599 #endif
2600          }
2601       }
2602       else
2603 #endif
2604       {
2605 #if defined(__WIN32__)
2606          //wglSwapLayerBuffers(oglDisplay.hdc,WGL_SWAP_MAIN_PLANE);
2607          SwapBuffers(oglDisplay.hdc);
2608 #elif defined(__unix__) || defined(__APPLE__)
2609       #if defined(__ANDROID__) || defined(__ODROID__)
2610          eglSwapBuffers(eglDisplay, eglSurface);
2611       #else
2612          glXSwapBuffers(xGlobalDisplay, (GLXDrawable)display.window);
2613       #endif
2614 #endif
2615       }
2616       //Logf("Out of DisplayScreen\n");
2617    }
2618
2619    void FreeBitmap(DisplaySystem displaySystem, Bitmap bitmap)
2620    {
2621       if(bitmap.driverData)
2622       {
2623          GLuint tex = (GLuint)(uintptr)bitmap.driverData;
2624          glDeleteTextures(1, &tex);
2625          bitmap.driverData = 0;
2626       }
2627       bitmap.driver = ((subclass(DisplayDriver))class(LFBDisplayDriver));
2628    }
2629
2630    bool AllocateBitmap(DisplaySystem displaySystem, Bitmap bitmap, int width, int height, int stride, PixelFormat format, bool allocatePalette)
2631    {
2632       OGLSystem oglSystem = displaySystem.driverData;
2633       bool result = false;
2634       Bitmap mipMap { };
2635       GLuint glBitmap = 0;
2636
2637       uint w = width, h = height;
2638       if(oglSystem.pow2textures)
2639       {
2640          w = pow2i(w);
2641          h = pow2i(h);
2642       }
2643       w = Min(w, oglSystem.maxTextureSize);
2644       h = Min(h, oglSystem.maxTextureSize);
2645
2646       glGenTextures(1, &glBitmap);
2647       glBindTexture(GL_TEXTURE_2D, glBitmap);
2648
2649       glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
2650
2651       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
2652       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
2653
2654       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
2655       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
2656
2657       glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
2658
2659       mipMap.Allocate(null, w, h, w, pixelFormatRGBA, false);
2660
2661       // glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2662       glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2663
2664       delete mipMap;
2665
2666       bitmap.driverData = (void *)(uintptr)glBitmap;
2667       bitmap.driver = displaySystem.driver;
2668       bitmap.width = w;
2669       bitmap.height = h;
2670
2671       result = true;
2672       return result;
2673    }
2674
2675    bool MakeDDBitmap(DisplaySystem displaySystem, Bitmap bitmap, bool mipMaps)
2676    {
2677       bool result = false;
2678       OGLSystem oglSystem = displaySystem.driverData;
2679
2680       // Pre process the bitmap... First make it 32 bit
2681       if(/*bitmap.pixelFormat == pixelFormatRGBA || */bitmap.Convert(null, pixelFormat888, null))
2682       {
2683          int c, level;
2684          uint w = bitmap.width, h = bitmap.height;
2685          GLuint glBitmap = 0;
2686          if(oglSystem.pow2textures)
2687          {
2688             w = pow2i(w);
2689             h = pow2i(h);
2690          }
2691          w = Min(w, oglSystem.maxTextureSize);
2692          h = Min(h, oglSystem.maxTextureSize);
2693
2694          if(mipMaps)
2695          {
2696             while(w * 2 < h) w *= 2;
2697             while(h * 2 < w) h *= 2;
2698          }
2699
2700          // Switch ARGB to RGBA
2701          //if(bitmap.format != pixelFormatRGBA)
2702          {
2703             for(c=0; c<bitmap.size; c++)
2704             {
2705                // ((ColorRGBA *)bitmap.picture)[c] = ((ColorAlpha *)bitmap.picture)[c];
2706                // TODO:
2707                ColorAlpha color = ((ColorAlpha *)bitmap.picture)[c];
2708                ((ColorRGBA *)bitmap.picture)[c] = ColorRGBA { color.color.r, color.color.g, color.color.b, color.a };
2709             }
2710          }
2711          bitmap.pixelFormat = pixelFormat888;
2712
2713          glGetError();
2714          glGenTextures(1, &glBitmap);
2715          if(glBitmap == 0)
2716          {
2717             //int error = glGetError();
2718             return false;
2719          }
2720
2721          glBindTexture(GL_TEXTURE_2D, glBitmap);
2722          glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
2723
2724          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, mipMaps ? GL_LINEAR_MIPMAP_LINEAR : GL_LINEAR);
2725          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
2726
2727          //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
2728
2729          //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
2730          //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
2731
2732          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
2733          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
2734
2735          glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
2736
2737          result = true;
2738
2739          for(level = 0; result && (w >= 1 || h >= 1); level++, w >>= 1, h >>= 1)
2740          {
2741             Bitmap mipMap;
2742             if(!w) w = 1;
2743             if(!h) h = 1;
2744             if(bitmap.width != w || bitmap.height != h)
2745             {
2746                mipMap = Bitmap { };
2747                if(mipMap.Allocate(null, w, h, w, bitmap.pixelFormat, false))
2748                {
2749                   Surface mipSurface = mipMap.GetSurface(0,0,null);
2750                   mipSurface.Filter(bitmap, 0,0,0,0, w, h, bitmap.width, bitmap.height);
2751                   delete mipSurface;
2752                }
2753                else
2754                {
2755                   result = false;
2756                   delete mipMap;
2757                }
2758             }
2759             else
2760                mipMap = bitmap;
2761
2762             if(result)
2763             {
2764                int error;
2765                //int width = 0;
2766                glGetError();
2767                // glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA8, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2768                glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2769                //printf("Calling glTexImage2D\n");
2770                //glGetTexLevelParameteriv(GL_TEXTURE_2D, level, GL_TEXTURE_WIDTH, &width);
2771                //printf("width = %d (Should be %d, %d)\n", width, w, h);
2772                if((error = glGetError()))
2773                {
2774                   //Logf("OpenGL Bitmap MakeDD error: %d...\n", error);
2775                   //printf("OpenGL Bitmap MakeDD error: %d...\n", error);
2776                   result = false;
2777                }
2778             }
2779             if(mipMap != bitmap)
2780                delete mipMap;
2781             if(!mipMaps) break;
2782          }
2783
2784          if(!bitmap.keepData)
2785             bitmap.driver.FreeBitmap(bitmap.displaySystem, bitmap);
2786          bitmap.driverData = (void *)(uintptr)glBitmap;
2787          bitmap.driver = displaySystem.driver;
2788
2789          if(!result)
2790             FreeBitmap(displaySystem, bitmap);
2791          else if(oglSystem.loadingFont)
2792          {
2793             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
2794             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
2795             oglSystem.loadingFont = false;
2796          }
2797       }
2798       return result;
2799    }
2800
2801    void ReleaseSurface(Display display, Surface surface)
2802    {
2803       glDisable(GL_SCISSOR_TEST);
2804       delete surface.driverData;
2805       surface.driverData = null;
2806    }
2807
2808    bool GetBitmapSurface(DisplaySystem displaySystem, Surface surface, Bitmap bitmap, int x, int y, Box clip)
2809    {
2810       return false;
2811    }
2812
2813    bool GetSurface(Display display, Surface surface, int x,int y, Box clip)
2814    {
2815       bool result = false;
2816       OGLSurface oglSurface = surface.driverData = OGLSurface { };
2817
2818       //Logf("GetSurface\n");
2819
2820       if(oglSurface)
2821       {
2822          if(displayWidth != display.width || displayHeight != display.height)
2823          {
2824             displayWidth = display.width;
2825             displayHeight = display.height;
2826
2827             glViewport(0,0,display.width,display.height);
2828             glLoadIdentity();
2829             glOrtho(0,display.width,display.height,0,0.0,1.0);
2830          }
2831
2832          surface.offset.x = x;
2833          surface.offset.y = y;
2834          surface.unclippedBox = surface.box = clip;
2835          oglSurface.bitmapMult[0] = 1;
2836          oglSurface.bitmapMult[1] = 1;
2837          oglSurface.bitmapMult[2] = 1;
2838          oglSurface.bitmapMult[3] = 1;
2839
2840          glEnable(GL_SCISSOR_TEST);
2841          glScissor(
2842             x+clip.left,
2843             (display.height) -(y+clip.bottom)-1,
2844             clip.right-clip.left+1,
2845             clip.bottom-clip.top+1);
2846          result = true;
2847       }
2848       return result;
2849    }
2850
2851    void Clip(Display display, Surface surface, Box clip)
2852    {
2853       Box box;
2854
2855       //Logf("Clip\n");
2856
2857       if(clip != null)
2858       {
2859          box = clip;
2860          box.Clip(surface.unclippedBox);
2861          surface.box = box;
2862       }
2863       else
2864          box = surface.box = surface.unclippedBox;
2865       box.left += surface.offset.x;
2866       box.top  += surface.offset.y;
2867       box.right+= surface.offset.x;
2868       box.bottom += surface.offset.y;
2869
2870       glScissor(
2871          box.left,display.height - box.bottom - 1,
2872          box.right-box.left+1, box.bottom-box.top+1);
2873    }
2874
2875    bool GrabScreen(Display display, Bitmap bitmap, int x, int y, unsigned int w, unsigned int h)
2876    {
2877       bool result = false;
2878       OGLDisplay oglDisplay = display.driverData;
2879       ColorAlpha * flippingBuffer = oglDisplay.flippingBuffer;
2880
2881       if(oglDisplay.flippingBuffer)
2882       {
2883          if(bitmap.pixelFormat != pixelFormat888 || bitmap.width < w || bitmap.height < h)
2884          {
2885             bitmap.Free();
2886             bitmap.Allocate(null, w,h,w, pixelFormat888, false);
2887          }
2888          if(bitmap)
2889          {
2890             uint row;
2891
2892             glPixelStorei(GL_PACK_ALIGNMENT, 4);
2893             glPixelStorei(GL_PACK_ROW_LENGTH, bitmap.stride);
2894             glPixelStorei(GL_PACK_SKIP_ROWS, 0);
2895             glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
2896             glReadPixels(x,display.height-h-y,w,h,GL_BGRA_EXT,GL_UNSIGNED_BYTE, flippingBuffer);
2897
2898             // Need a flip...
2899             for(row = 0; row<h; row++)
2900                CopyBytesBy4(((ColorAlpha *)bitmap.picture) + row * w, ((ColorAlpha *)flippingBuffer) + (h-row-1) * w, w);
2901             result = true;
2902          }
2903       }
2904       return result;
2905    }
2906
2907    void SetForeground(Display display, Surface surface, ColorAlpha color)
2908    {
2909       OGLSurface oglSurface = surface.driverData;
2910
2911       //Logf("SetForeground\n");
2912
2913       oglSurface.foreground[0] = color.color.r/255.0f;
2914       oglSurface.foreground[1] = color.color.g/255.0f;
2915       oglSurface.foreground[2] = color.color.b/255.0f;
2916       //oglSurface.foreground[3] = 1.0f;
2917       oglSurface.foreground[3] = color.a/255.0f;
2918
2919       //if(!oglSurface.foreground[3])printf("bug");
2920    }
2921
2922    void SetBackground(Display display, Surface surface, ColorAlpha color)
2923    {
2924       OGLSurface oglSurface = surface.driverData;
2925
2926       //Logf("SetBackground\n");
2927
2928       oglSurface.background[0] = color.color.r/255.0f;
2929       oglSurface.background[1] = color.color.g/255.0f;
2930       oglSurface.background[2] = color.color.b/255.0f;
2931       //oglSurface.background[3] = 1.0;
2932       oglSurface.background[3] = color.a/255.0f;
2933    }
2934
2935    void SetBlitTint(Display display, Surface surface, ColorAlpha color)
2936    {
2937       OGLSurface oglSurface = surface.driverData;
2938
2939       oglSurface.bitmapMult[0] = color.color.r/255.0f;
2940       oglSurface.bitmapMult[1] = color.color.g/255.0f;
2941       oglSurface.bitmapMult[2] = color.color.b/255.0f;
2942       oglSurface.bitmapMult[3] = color.a/255.0f;
2943    }
2944
2945    ColorAlpha GetPixel(Display display, Surface surface,int x,int y)
2946    {
2947       return 0;
2948    }
2949
2950    void PutPixel(Display display, Surface surface,int x,int y)
2951    {
2952       OGLSurface oglSurface = surface.driverData;
2953
2954       //Logf("PutPixel\n");
2955
2956       glColor4fv(oglSurface.foreground);
2957       glBegin(GL_POINTS);
2958       // glVertex2i(x+surface.offset.x, y+surface.offset.y);
2959       glVertex2f(x+surface.offset.x + 0.5f, y+surface.offset.y + 0.5f);
2960
2961       glEnd();
2962    }
2963
2964    void DrawLine(Display display, Surface surface, int _x1, int _y1, int _x2, int _y2)
2965    {
2966       OGLSurface oglSurface = surface.driverData;
2967       float x1 = _x1, x2 = _x2, y1 = _y1, y2 = _y2;
2968       if(_x1 == _x2)
2969       {
2970          if(_y2 >= _y1)
2971             y2 += 1;
2972          else
2973             y1 += 1;
2974       }
2975       else if(_y1 == _y2)
2976       {
2977          if(_x2 >= _x1)
2978             x2 += 1;
2979          else
2980             x1 += 1;
2981       }
2982       x1 += surface.offset.x;
2983       y1 += surface.offset.y;
2984       x2 += surface.offset.x;
2985       y2 += surface.offset.y;
2986
2987       //Logf("Line\n");
2988
2989       glColor4fv(oglSurface.foreground);
2990       glBegin(GL_LINES);
2991 #ifdef _GLES
2992       if(stippleEnabled)
2993       {
2994          glTexCoord2f(0.5f, 0);
2995          glVertex2f(x1 + 0.5f, y1 + 0.5f);
2996          glTexCoord2f(Max(x2-x1, y2-y1) + 0.5f, 0);
2997          glVertex2f(x2 + 0.5f, y2 + 0.5f);
2998       }
2999       else
3000 #endif
3001       {
3002          /*
3003          glVertex2i(x1, y1);
3004          glVertex2i(x2, y2);
3005          */
3006          glVertex2f(x1 + 0.5f, y1 + 0.5f);
3007          glVertex2f(x2 + 0.5f, y2 + 0.5f);
3008       }
3009
3010       glEnd();
3011    }
3012
3013    void Rectangle(Display display, Surface surface,int x1,int y1,int x2,int y2)
3014    {
3015       OGLSurface oglSurface = surface.driverData;
3016       x1 += surface.offset.x;
3017       y1 += surface.offset.y;
3018       x2 += surface.offset.x;
3019       y2 += surface.offset.y;
3020
3021       //Logf("Rectangle\n");
3022
3023       glColor4fv(oglSurface.foreground);
3024 #ifdef _GLES
3025       if(stippleEnabled)
3026       {
3027          glBegin(GL_LINES);
3028
3029          glTexCoord2f(0.5f, 0);
3030          glVertex2f(x1 + 0.5f, y1 + 0.5f);
3031          glTexCoord2f(y2-y1 + 0.5f, 0);
3032          glVertex2f(x1 + 0.5f, y2 + 0.5f);
3033
3034          glTexCoord2f(0.5f, 0);
3035          glVertex2f(x1 + 0.5f, y2 + 0.5f);
3036          glTexCoord2f(x2 - x1 + 0.5f, 0);
3037          glVertex2f(x2 + 0.5f, y2 + 0.5f);
3038
3039          glTexCoord2f(0.5f, 0);
3040          glVertex2f(x2 + 0.5f, y2 + 0.5f);
3041          glTexCoord2f(y1 - y2 + 0.5f, 0);
3042          glVertex2f(x2 + 0.5f, y1 + 0.5f);
3043
3044          glTexCoord2f(0.5f, 0);
3045          glVertex2f(x2 + 0.5f, y1 + 0.5f);
3046          glTexCoord2f(x1 - x2 + 0.5f, 0);
3047          glVertex2f(x1 + 0.5f, y1 + 0.5f);
3048       }
3049       else
3050 #endif
3051       {
3052          glBegin(GL_LINE_LOOP);
3053          /*
3054          glVertex2i(x1, y1);
3055          glVertex2i(x1, y2);
3056          glVertex2i(x2, y2);
3057          glVertex2i(x2, y1);
3058          */
3059          glVertex2f(x1 + 0.5f, y1 + 0.5f);
3060          glVertex2f(x1 + 0.5f, y2 + 0.5f);
3061          glVertex2f(x2 + 0.5f, y2 + 0.5f);
3062          glVertex2f(x2 + 0.5f, y1 + 0.5f);
3063       }
3064       glEnd();
3065    }
3066
3067    void Area(Display display, Surface surface,int x1,int y1,int x2,int y2)
3068    {
3069       OGLSurface oglSurface = surface.driverData;
3070       //Logf("Area\n");
3071
3072       glColor4fv(oglSurface.background);
3073       glRecti(x1+surface.offset.x, y1+surface.offset.y,
3074               x2+surface.offset.x + 1, y2+surface.offset.y + 1);
3075
3076       /*
3077       glRectf(x1+surface.offset.x, y1+surface.offset.y,
3078               x2+surface.offset.x + 1, y2+surface.offset.y + 1);
3079       */
3080    }
3081
3082    void Clear(Display display, Surface surface, ClearType type)
3083    {
3084       OGLDisplay oglDisplay = display.driverData;
3085       OGLSurface oglSurface = surface.driverData;
3086
3087       //Logf("Clear\n");
3088       if(type != depthBuffer)
3089          glClearColor(oglSurface.background[0], oglSurface.background[1], oglSurface.background[2], oglSurface.background[3]);
3090       if(type != colorBuffer && !oglDisplay.depthWrite)
3091       {
3092          glDepthMask((byte)bool::true);
3093       }
3094       glClear(((type != depthBuffer) ? GL_COLOR_BUFFER_BIT : 0) |
3095               ((type != colorBuffer) ? GL_DEPTH_BUFFER_BIT : 0));
3096       if(type != colorBuffer && !oglDisplay.depthWrite)
3097       {
3098          glDepthMask((byte)bool::false);
3099       }
3100    }
3101
3102    bool ConvertBitmap(DisplaySystem displaySystem, Bitmap bitmap, PixelFormat format, ColorAlpha * palette)
3103    {
3104       return true;
3105    }
3106
3107    void Blit(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h)
3108    {
3109       OGLSurface oglSurface = surface.driverData;
3110
3111 #if !defined(__OLDX__)
3112          // WHY DO WE HAVE GL_ONE HERE ?
3113          /*if(glBlendFuncSeparate && !oglSurface.writingText)
3114             glBlendFuncSeparate(GL_ONE, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
3115 #endif
3116
3117       if(!oglSurface.writingText)
3118       {
3119          // glTranslatef(-0.375f, -0.375f, 0.0f);
3120          glEnable(GL_TEXTURE_2D);
3121          glColor4fv(oglSurface.bitmapMult);
3122       }
3123       else if(oglSurface.xOffset)
3124          glTranslated(oglSurface.xOffset / 64.0/*-0.375*/, 0.0, 0.0);
3125
3126       glBindTexture(GL_TEXTURE_2D, (GLuint)(uintptr)bitmap.driverData);
3127       glBegin(GL_QUADS);
3128
3129       if(h < 0)
3130       {
3131          glTexCoord2f((float)sx/ bitmap.width, (float)(sy-h)/ bitmap.height);
3132          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
3133          glTexCoord2f((float)(sx+w) / bitmap.width, (float)(sy-h)/ bitmap.height);
3134          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
3135          glTexCoord2f((float)(sx+w)/ bitmap.width, (float)sy/ bitmap.height);
3136          glVertex2i(dx+w+surface.offset.x, dy-h+surface.offset.y);
3137          glTexCoord2f((float)sx / bitmap.width, (float)sy/ bitmap.height);
3138          glVertex2i(dx+surface.offset.x, dy-h+surface.offset.y);
3139       }
3140       else
3141       {
3142          /*
3143          glTexCoord2f((float)sx / bitmap.width, (float)sy/ bitmap.height);
3144          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
3145          glTexCoord2f((float)(sx+w)/ bitmap.width, (float)sy/ bitmap.height);
3146          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
3147          glTexCoord2f((float)(sx+w) / bitmap.width, (float)(sy+h)/ bitmap.height);
3148          glVertex2i(dx+w+surface.offset.x, dy+h+surface.offset.y);
3149          glTexCoord2f((float)sx/ bitmap.width, (float)(sy+h)/ bitmap.height);
3150          glVertex2i(dx+surface.offset.x, dy+h+surface.offset.y);
3151          */
3152
3153          glTexCoord2f((float)sx / bitmap.width, (float)sy/ bitmap.height);
3154          glVertex2f((float)dx+surface.offset.x, (float)dy+surface.offset.y);
3155          glTexCoord2f((float)(sx+w)/ bitmap.width, (float)sy/ bitmap.height);
3156          glVertex2f((float)dx+w+surface.offset.x, (float)dy+surface.offset.y);
3157          glTexCoord2f((float)(sx+w) / bitmap.width, (float)(sy+h)/ bitmap.height);
3158          glVertex2f((float)dx+w+surface.offset.x, (float)dy+h+surface.offset.y);
3159          glTexCoord2f((float)sx/ bitmap.width, (float)(sy+h)/ bitmap.height);
3160          glVertex2f((float)dx+surface.offset.x, (float)dy+h+surface.offset.y);
3161       }
3162       glEnd();
3163
3164       if(!oglSurface.writingText)
3165       {
3166          glDisable(GL_TEXTURE_2D);
3167
3168          //glTranslate(0.375, 0.375, 0.0);
3169       }
3170       else if(oglSurface.xOffset)
3171          glTranslated(-oglSurface.xOffset / 64.0/*+0.375*/, 0.0, 0.0);
3172
3173 #if !defined(__OLDX__)
3174          /*if(glBlendFuncSeparate && !oglSurface.writingText)
3175             glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
3176 #endif
3177    }
3178
3179    void Stretch(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
3180    {
3181       OGLSurface oglSurface = surface.driverData;
3182
3183       //glTranslate(-0.375, -0.375, 0.0);
3184
3185       //Logf("Stretch\n");
3186
3187 #if !defined(__OLDX__)
3188       /*if(glBlendFuncSeparate)
3189          glBlendFuncSeparate(GL_ONE, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
3190 #endif
3191
3192       glEnable(GL_TEXTURE_2D);
3193       glBindTexture(GL_TEXTURE_2D, (GLuint)(uintptr)bitmap.driverData);
3194
3195       glColor4fv(oglSurface.bitmapMult);
3196
3197       glBegin(GL_QUADS);
3198
3199       if(h < 0)
3200       {
3201          glTexCoord2f((float)(sx)/ bitmap.width, (float)(sy+sh)/ bitmap.height);
3202          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
3203
3204          glTexCoord2f((float)(sx+sw) / bitmap.width, (float)(sy+sh)/ bitmap.height);
3205          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
3206
3207          glTexCoord2f((float)(sx+sw)/ bitmap.width, (float)(sy)/ bitmap.height);
3208          glVertex2i(dx+w+surface.offset.x, dy-h+surface.offset.y);
3209
3210          glTexCoord2f((float)(sx) / bitmap.width, (float)(sy)/ bitmap.height);
3211          glVertex2i(dx+surface.offset.x, dy-h+surface.offset.y);
3212       }
3213       else
3214       {
3215          glTexCoord2f((float)(sx) / bitmap.width, (float)(sy)/ bitmap.height);
3216          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
3217
3218          glTexCoord2f((float)(sx+sw)/ bitmap.width, (float)(sy)/ bitmap.height);
3219          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
3220
3221          glTexCoord2f((float)(sx+sw) / bitmap.width, (float)(sy+sh)/ bitmap.height);
3222          glVertex2i(dx+w+surface.offset.x, dy+h+surface.offset.y);
3223
3224          glTexCoord2f((float)(sx)/ bitmap.width, (float)(sy+sh)/ bitmap.height);
3225          glVertex2i(dx+surface.offset.x, dy+h+surface.offset.y);
3226       }
3227
3228       glEnd();
3229
3230       glDisable(GL_TEXTURE_2D);
3231
3232       //glTranslate(0.375, 0.375, 0.0);
3233 #if !defined(__OLDX__)
3234       /*if(glBlendFuncSeparate)
3235          glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
3236 #endif
3237
3238    }
3239
3240    void Filter(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
3241    {
3242       Stretch(display, surface, bitmap, dx, dy, sx, sy, w, h, sw, sh);
3243    }
3244
3245    void StretchDI(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
3246    {
3247       float s2dw,s2dh,d2sw,d2sh;
3248       //bool flipX = false, flipY = false;
3249
3250       //Logf("StretchDI\n");
3251
3252       if(Sgn(w) != Sgn(sw))
3253       {
3254          w = Abs(w);
3255          sw = Abs(sw);
3256          //flipX = true;
3257       }
3258       if(Sgn(h) != Sgn(sh))
3259       {
3260          h = Abs(h);
3261          sh = Abs(sh);
3262          //flipY = true;
3263       }
3264
3265       s2dw=(float)w / sw;
3266       s2dh=(float)h / sh;
3267       d2sw=(float)sw / w;
3268       d2sh=(float)sh / h;
3269
3270       //Clip against the edges of the source
3271       if(sx<0)
3272       {
3273          dx+=(int)((0-sx) * s2dw);
3274          w-=(int)((0-sx) * s2dw);
3275          sw-=0-sx;
3276          sx=0;
3277       }
3278       if(sy<0)
3279       {
3280          dy+=(int)((0-sy) * s2dh);
3281          h-=(int)((0-sy) * s2dh);
3282
3283          sh-=0-sy;
3284          sy=0;
3285       }
3286       if(sx+sw>bitmap.width-1)
3287       {
3288          w-=(int)((sx+sw-(bitmap.width-1)-1)*s2dw);
3289          sw-=sx+sw-(bitmap.width-1)-1;
3290       }
3291       if(sy+sh>(bitmap.height-1))
3292       {
3293          h-=(int)((sy+sh-(bitmap.height-1)-1)*s2dh);
3294          sh-=sy+sh-(bitmap.height-1)-1;
3295       }
3296       //Clip against the edges of the surfaceination
3297       if(dx<surface.box.left)
3298       {
3299          //if(!flip)
3300          sx+=(int)((surface.box.left-dx)*d2sw);
3301          sw-=(int)((surface.box.left-dx)*d2sw);
3302          w-=surface.box.left-dx;
3303          dx=surface.box.left;
3304       }
3305       if(dy<surface.box.top)
3306       {
3307          sy+=(int)((surface.box.top-dy)*d2sh);
3308          sh-=(int)((surface.box.top-dy)*d2sh);
3309          h-=surface.box.top-dy;
3310          dy=surface.box.top;
3311       }
3312       if(dx+w>surface.box.right)
3313       {
3314          //if(flip) sx+=(int)((dx+w-surface.box.right-1)*d2sw);
3315          sw-=(int)((dx+w-surface.box.right-1)*d2sw);
3316          w-=dx+w-surface.box.right-1;
3317       }
3318       if(dy+h>surface.box.bottom)
3319       {
3320          sh-=(int)((dy+h-surface.box.bottom-1)*d2sh);
3321          h-=dy+h-surface.box.bottom-1;
3322       }
3323       if((w<=0)||(h<=0)||(sw<=0)||(sh<=0)) return;
3324
3325       dx += surface.offset.x;
3326       dy += surface.offset.y;
3327
3328       if(bitmap.pixelFormat == pixelFormat888 && !bitmap.paletteShades)
3329       {
3330          glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
3331          glPixelStorei(GL_UNPACK_ROW_LENGTH, bitmap.stride);
3332          glPixelStorei(GL_UNPACK_SKIP_PIXELS, sx);
3333          glPixelStorei(GL_UNPACK_SKIP_ROWS, sy);
3334          glRasterPos2d(dx,dy);
3335          //glPixelZoom(flipX ? -s2dw : s2dw, flipY ? s2dh : -s2dh);
3336          glPixelZoom(s2dw, -s2dh);
3337          glDrawPixels(sw,sh,GL_BGRA_EXT,GL_UNSIGNED_BYTE, bitmap.picture);
3338          glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
3339          glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
3340          glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
3341          glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
3342       }
3343    }
3344
3345    void BlitDI(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h)
3346    {
3347       //Logf("BlitDI\n");
3348
3349       //Clip against the edges of the source
3350       if(sx<0)
3351       {
3352          dx+=-sx;
3353          w-=-sx;
3354          sx=0;
3355       }
3356       if(sy<0)
3357       {
3358          dy+=0-sy;
3359          h-=0-sy;
3360          sy=0;
3361       }
3362       if(sx+w>bitmap.width-1)
3363          w-=sx+w-(bitmap.width-1)-1;
3364       if(sy+h>bitmap.height-1)
3365          h-=sy+h-(bitmap.height-1)-1;
3366       //Clip against the edges of the surfaceination
3367       if(dx<surface.box.left)
3368       {
3369          //if(!flip)
3370          sx+=surface.box.left-dx;
3371          w-=surface.box.left-dx;
3372          dx=surface.box.left;
3373       }
3374       if(dy<surface.box.top)
3375       {
3376          sy+=surface.box.top-dy;
3377          h-=surface.box.top-dy;
3378          dy=surface.box.top;
3379       }
3380       if(dx+w>surface.box.right)
3381       {
3382          //if(flip) sx+=dx+w-surface.box.right-1;
3383          w-=dx+w-surface.box.right-1;
3384       }
3385       if(dy+h>surface.box.bottom)
3386          h-=dy+h-surface.box.bottom-1;
3387       if((w<=0)||(h<=0))
3388          return;
3389
3390       dx += surface.offset.x;
3391       dy += surface.offset.y;
3392
3393       if(bitmap.pixelFormat == pixelFormat888 && !bitmap.paletteShades)
3394       {
3395          glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
3396          glPixelStorei(GL_UNPACK_ROW_LENGTH, bitmap.stride);
3397          glPixelStorei(GL_UNPACK_SKIP_PIXELS, sx);
3398          glPixelStorei(GL_UNPACK_SKIP_ROWS, sy);
3399          glRasterPos2d(dx,dy);
3400          glPixelZoom(1,-1);
3401          glDrawPixels(w,h,GL_BGRA_EXT,GL_UNSIGNED_BYTE, bitmap.picture);
3402          glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
3403          glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
3404          glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
3405          glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
3406       }
3407    }
3408
3409    void FilterDI(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
3410    {
3411       StretchDI(display, surface, bitmap, dx, dy, sx, sy, w, h, sw, sh);
3412    }
3413
3414    void UnloadFont(DisplaySystem displaySystem, Font font)
3415    {
3416       ((subclass(DisplayDriver))class(LFBDisplayDriver)).UnloadFont(displaySystem, font);
3417    }
3418
3419    Font LoadFont(DisplaySystem displaySystem, const char * faceName, float size, FontFlags flags)
3420    {
3421       Font font;
3422       OGLSystem oglSystem = displaySystem.driverData;
3423       oglSystem.loadingFont = true;
3424       font = ((subclass(DisplayDriver))class(LFBDisplayDriver)).LoadFont(displaySystem, faceName, size, flags);
3425       return font;
3426    }
3427
3428    void FontExtent(DisplaySystem displaySystem, Font font, const char * text, int len, int * width, int * height)
3429    {
3430       ((subclass(DisplayDriver))class(LFBDisplayDriver)).FontExtent(displaySystem, font, text, len, width, height);
3431    }
3432
3433    void WriteText(Display display, Surface surface, int x, int y, const char * text, int len)
3434    {
3435       OGLSurface oglSurface = surface.driverData;
3436       OGLSystem oglSystem = display.displaySystem.driverData;
3437       oglSystem.loadingFont = true;
3438
3439       //glTranslated(-0.375, -0.375, 0.0);
3440
3441       //Logf("Blit\n");
3442
3443       if(surface.textOpacity)
3444       {
3445          int w, h;
3446          FontExtent(display.displaySystem, surface.font, text, len, &w, &h);
3447          display.displaySystem.driver.Area(display, surface,x,y,x+w-1,y+h-1);
3448       }
3449
3450       oglSurface.writingText = true;
3451
3452       glEnable(GL_TEXTURE_2D);
3453       glColor4fv(oglSurface.foreground);
3454
3455       ((subclass(DisplayDriver))class(LFBDisplayDriver)).WriteText(display, surface, x, y, text, len);
3456       oglSurface.writingText = false;
3457       oglSystem.loadingFont = false;
3458
3459       glDisable(GL_TEXTURE_2D);
3460
3461       //glTranslated(0.375, 0.375, 0.0);
3462    }
3463
3464    void TextFont(Display display, Surface surface, Font font)
3465    {
3466       ((subclass(DisplayDriver))class(LFBDisplayDriver)).TextFont(display, surface, font);
3467    }
3468
3469    void TextOpacity(Display display, Surface surface, bool opaque)
3470    {
3471       OGLSurface oglSurface = surface.driverData;
3472       oglSurface.opaqueText = opaque;
3473    }
3474
3475    void TextExtent(Display display, Surface surface, const char * text, int len, int * width, int * height)
3476    {
3477       OGLSurface oglSurface = surface.driverData;
3478       OGLSystem oglSystem = display.displaySystem.driverData;
3479       oglSystem.loadingFont = true;
3480       FontExtent(display.displaySystem, oglSurface.font, text, len, width, height);
3481       oglSystem.loadingFont = false;
3482    }
3483
3484    void DrawingChar(Display display, Surface surface, char character)
3485    {
3486
3487    }
3488
3489    void LineStipple(Display display, Surface surface, uint32 stipple)
3490    {
3491       //Logf("Stipple\n");
3492
3493       if(stipple)
3494       {
3495 #if defined(_GLES)
3496          stippleEnabled = true;
3497          glesLineStipple(1, (uint16)stipple);
3498 #else
3499          glLineStipple(1, (uint16)stipple);
3500          glEnable(GL_LINE_STIPPLE);
3501 #endif
3502       }
3503       else
3504       {
3505 #if defined(_GLES)
3506          stippleEnabled = false;
3507          glMatrixMode(GL_TEXTURE);
3508          glLoadIdentity();
3509          glMatrixMode(GL_PROJECTION);
3510          glDisable(GL_TEXTURE_2D);
3511 #else
3512          glDisable(GL_LINE_STIPPLE);
3513 #endif
3514       }
3515    }
3516 #if !defined(ECERE_NO3D) && !defined(ECERE_VANILLA)
3517    void SetRenderState(Display display, RenderState state, uint value)
3518    {
3519       OGLDisplay oglDisplay = display.driverData;
3520       //Logf("RenderState\n");
3521
3522       switch(state)
3523       {
3524          case antiAlias:
3525             if(value)
3526                glEnable(GL_MULTISAMPLE_ARB);
3527             else
3528                glDisable(GL_MULTISAMPLE_ARB);
3529             break;
3530          case fillMode:
3531 #if !defined(_GLES)
3532             glPolygonMode(GL_FRONT_AND_BACK, ((FillModeValue)value == solid) ? GL_FILL : GL_LINE);
3533 #endif
3534             break;
3535          case depthTest:
3536             if(value) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
3537             break;
3538          case depthWrite:
3539             if(value) glDepthMask((byte)bool::true); else glDepthMask((byte)bool::false);
3540             oglDisplay.depthWrite = (bool)value;
3541             break;
3542          case fogColor:
3543          {
3544             float color[4] = { ((Color)value).r/255.0f, ((Color)value).g/255.0f, ((Color)value).b/255.0f, 1.0f };
3545             glFogfv(GL_FOG_COLOR, (float *)&color);
3546             break;
3547          }
3548          case fogDensity:
3549             glFogf(GL_FOG_DENSITY, (float)(RenderStateFloat { ui = value }.f * nearPlane));
3550             break;
3551          case blend:
3552             if(value) glEnable(GL_BLEND); else glDisable(GL_BLEND);
3553             break;
3554          case ambient:
3555          {
3556             float ambient[4] = { ((Color)value).r/255.0f, ((Color)value).g/255.0f, ((Color)value).b/255.0f, 1.0f };
3557             glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambient);
3558             break;
3559          }
3560          case alphaWrite:
3561          {
3562             if(value) glColorMask(1,1,1,1); else glColorMask(1,1,1,0);
3563             break;
3564          }
3565          case vSync:
3566          {
3567 #if defined(__WIN32__)
3568             wglSwapIntervalEXT(value ? 1 : 0);
3569 #endif
3570             break;
3571          }
3572       }
3573    }
3574
3575    void SetLight(Display display, int id, Light light)
3576    {
3577       //Logf("SetLight\n");
3578
3579       if(light != null)
3580       {
3581          Object lightObject = light.lightObject;
3582          float position[4] = { 0, 0, 0, 0 };
3583          float color[4] = { 0, 0, 0, 1 };
3584
3585          glEnable(GL_LIGHT0 + id);
3586          /*
3587          glLightfv(GL_LIGHT0 + id, GL_DIFFUSE, (float *)&light.diffuse);
3588          glLightfv(GL_LIGHT0 + id, GL_AMBIENT, (float *)&light.ambient);
3589          glLightfv(GL_LIGHT0 + id, GL_SPECULAR,(float *)&light.specular);
3590          */
3591
3592          if(!light.multiplier) light.multiplier = 1.0f;
3593
3594          color[0] = light.diffuse.r * light.multiplier;
3595          color[1] = light.diffuse.g * light.multiplier;
3596          color[2] = light.diffuse.b * light.multiplier;
3597          glLightfv(GL_LIGHT0 + id, GL_DIFFUSE, color);
3598
3599          color[0] = light.ambient.r * light.multiplier;
3600          color[1] = light.ambient.g * light.multiplier;
3601          color[2] = light.ambient.b * light.multiplier;
3602          glLightfv(GL_LIGHT0 + id, GL_AMBIENT, color);
3603          color[0] = light.specular.r * light.multiplier;
3604          color[1] = light.specular.g * light.multiplier;
3605          color[2] = light.specular.b * light.multiplier;
3606          glLightfv(GL_LIGHT0 + id, GL_SPECULAR,color);
3607
3608          if(lightObject)
3609          {
3610             Vector3D positionVector;
3611             if(light.flags.spot)
3612             {
3613                if(lightObject.flags.root || !lightObject.parent)
3614                {
3615                   positionVector = lightObject.transform.position;
3616                   positionVector.Subtract(positionVector, display.display3D.camera.cPosition);
3617                }
3618                else
3619                {
3620                   positionVector.MultMatrix(lightObject.transform.position, lightObject.parent.matrix);
3621                   if(display.display3D.camera)
3622                      positionVector.Subtract(positionVector, display.display3D.camera.cPosition);
3623                }
3624                position[3] = 1;
3625             }
3626             else
3627             {
3628                if(!light.direction.x && !light.direction.y && !light.direction.z)
3629                {
3630                   Vector3Df vector { 0,0,-1 };
3631                   Matrix mat;
3632                   mat.RotationQuaternion(light.orientation);
3633                   positionVector.MultMatrixf(vector, mat);
3634                }
3635                else
3636                {
3637                   positionVector = light.direction;
3638                   position[3] = 1;
3639                }
3640             }
3641
3642             position[0] = (float)positionVector.x;
3643             position[1] = (float)positionVector.y;
3644             position[2] = (float)positionVector.z;
3645
3646             glLightfv(GL_LIGHT0 + id, GL_POSITION, position);
3647
3648             /*
3649             // Display Light Position
3650             glDisable(GL_LIGHTING);
3651             glDisable(GL_DEPTH_TEST);
3652             glColor3f(1,1,1);
3653             glPointSize(10);
3654             glBegin(GL_POINTS);
3655             glVertex3fv(position);
3656             glEnd();
3657             glEnable(GL_DEPTH_TEST);
3658             glEnable(GL_LIGHTING);
3659
3660
3661             // Display Target
3662             if(lightObject.flags.root || !lightObject.parent)
3663             {
3664                positionVector = light.target.transform.position;
3665                positionVector.Subtract(positionVector, display.camera.cPosition);
3666             }
3667             else
3668             {
3669                positionVector.MultMatrix(light.target.transform.position,
3670                   lightObject.light.target.parent.matrix);
3671                positionVector.Subtract(positionVector, display.camera.cPosition);
3672             }
3673
3674             position[0] = positionVector.x;
3675             position[1] = positionVector.y;
3676             position[2] = positionVector.z;
3677
3678             glDisable(GL_LIGHTING);
3679             glDisable(GL_DEPTH_TEST);
3680             glColor3f(1,1,0);
3681             glPointSize(10);
3682             glBegin(GL_POINTS);
3683             glVertex3fv(position);
3684             glEnd();
3685             glEnable(GL_DEPTH_TEST);
3686             glEnable(GL_LIGHTING);
3687             */
3688
3689             if(light.flags.attenuation)
3690             {
3691                glLightf(GL_LIGHT0 + id, GL_CONSTANT_ATTENUATION, light.Kc);
3692                glLightf(GL_LIGHT0 + id, GL_LINEAR_ATTENUATION, light.Kl);
3693                glLightf(GL_LIGHT0 + id, GL_QUADRATIC_ATTENUATION, light.Kq);
3694             }
3695
3696             if(light.flags.spot)
3697             {
3698                float exponent = 0;
3699                #define MAXLIGHT  0.9
3700                float direction[4] = { (float)light.direction.x, (float)light.direction.y, (float)light.direction.z, 1 };
3701                // Figure out exponent out of the hot spot
3702                exponent = (float)(log(MAXLIGHT) / log(cos((light.hotSpot / 2))));
3703
3704                glLightfv(GL_LIGHT0 + id, GL_SPOT_DIRECTION, direction);
3705                glLightf(GL_LIGHT0 + id, GL_SPOT_CUTOFF, (float)(light.fallOff / 2));
3706                glLightf(GL_LIGHT0 + id, GL_SPOT_EXPONENT, exponent);
3707             }
3708          }
3709          else
3710          {
3711
3712             Vector3Df vector { 0,0,-1 };
3713             Vector3Df direction;
3714             Matrix mat;
3715
3716             mat.RotationQuaternion(light.orientation);
3717             direction.MultMatrix(vector, mat);
3718
3719             position[0] = direction.x;
3720             position[1] = direction.y;
3721             position[2] = direction.z;
3722
3723             glLightfv(GL_LIGHT0 + id, GL_POSITION, position);
3724          }
3725       }
3726       else
3727          glDisable(GL_LIGHT0 + id);
3728    }
3729
3730    void SetCamera(Display display, Surface surface, Camera camera)
3731    {
3732       OGLDisplay oglDisplay = display.driverData;
3733       //Logf("SetCamera\n");
3734
3735       if(camera)
3736       {
3737          int left = surface.box.left + surface.offset.x;
3738          int top = surface.box.top  + surface.offset.y;
3739          int right = surface.box.right + surface.offset.x;
3740          int bottom = surface.box.bottom + surface.offset.y;
3741          float origX = surface.offset.x + camera.origin.x;
3742          float origY = surface.offset.y + camera.origin.y;
3743          int x = left;
3744          int y = display.height - bottom - 1;
3745          int w = right - left + 1;
3746          int h = bottom - top + 1;
3747
3748          // *** ViewPort ***
3749          glViewport(x, y, w, h);
3750
3751          // *** Projection Matrix ***
3752          if(!display.display3D.camera)
3753             glPushMatrix();
3754          else
3755             glMatrixMode(GL_PROJECTION);
3756          if(display.display3D.collectingHits)
3757          {
3758             float pickX = display.display3D.pickX + surface.offset.x;
3759             float pickY = display.height - (display.display3D.pickY + surface.offset.y) - 1;
3760             Matrix pickMatrix
3761             {
3762                {
3763                   w / display.display3D.pickWidth, 0, 0, 0,
3764                   0, h / display.display3D.pickHeight, 0, 0,
3765                   0, 0, 1, 0,
3766                   (w + 2.0f * (x - pickX)) / display.display3D.pickWidth,
3767                   (h + 2.0f * (y - pickY)) / display.display3D.pickHeight, 0, 1
3768                }
3769             };
3770             glLoadMatrixd(pickMatrix.array);
3771          }
3772          else
3773             glLoadIdentity();
3774          glFrustum(
3775             (left   - origX) * camera.zMin / camera.focalX,
3776             (right  - origX) * camera.zMin / camera.focalX,
3777             (bottom - origY) * camera.zMin / camera.focalY,
3778             (top    - origY) * camera.zMin / camera.focalY,
3779             camera.zMin, camera.zMax);
3780
3781          glDisable(GL_BLEND);
3782
3783          // *** Z Inverted Identity Matrix ***
3784          glMatrixMode(GL_MODELVIEW);
3785          if(!display.display3D.camera)
3786             glPushMatrix();
3787
3788          glLoadIdentity();
3789
3790          glScaled(1.0/nearPlane, 1.0/nearPlane, -1.0/nearPlane);
3791
3792          // *** View Matrix ***
3793          glMultMatrixd(camera.viewMatrix.array);
3794
3795          // *** Lights ***
3796          // ...
3797
3798          glEnable(GL_DEPTH_TEST);
3799          glEnable(GL_LIGHTING);
3800          glShadeModel(GL_SMOOTH);
3801          glDepthMask((byte)bool::true);
3802          oglDisplay.depthWrite = true;
3803
3804          glEnable(GL_MULTISAMPLE_ARB);
3805       }
3806       else if(display.display3D.camera)
3807       {
3808          oglDisplay.depthWrite = false;
3809          glViewport(0,0,display.width,display.height);
3810
3811          glDisable(GL_CULL_FACE);
3812          glDisable(GL_DEPTH_TEST);
3813          glDisable(GL_LIGHTING);
3814          glDisable(GL_FOG);
3815          glDisable(GL_TEXTURE_2D);
3816          glShadeModel(GL_FLAT);
3817          glEnable(GL_BLEND);
3818          glDisable(GL_MULTISAMPLE_ARB);
3819
3820          // *** Restore 2D MODELVIEW Matrix ***
3821          glPopMatrix();
3822
3823          // *** Restore 2D PROJECTION Matrix ***
3824          glMatrixMode(GL_PROJECTION);
3825          glPopMatrix();
3826       }
3827
3828    }
3829
3830    void ApplyMaterial(Display display, Material material, Mesh mesh)
3831    {
3832       //Logf("ApplyMaterial\n");
3833
3834       // Basic Properties
3835       if(material.flags.doubleSided)
3836       {
3837          glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, !material.flags.singleSideLight);
3838          glDisable(GL_CULL_FACE);
3839       }
3840       else
3841       {
3842          glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, bool::false);
3843          glEnable(GL_CULL_FACE);
3844       }
3845
3846       // Fog
3847       if(material.flags.noFog)
3848          glDisable(GL_FOG);
3849       else
3850          glEnable(GL_FOG);
3851
3852       // Maps
3853       if(material.baseMap && (mesh.texCoords || mesh.flags.texCoords1))
3854       {
3855          Bitmap map = material.baseMap;
3856          glEnable(GL_TEXTURE_2D);
3857          glBindTexture(GL_TEXTURE_2D, (GLuint)(uintptr)map.driverData);
3858
3859          glMatrixMode(GL_TEXTURE);
3860          glLoadIdentity();
3861          if(material.uScale && material.vScale)
3862             glScalef(material.uScale, material.vScale, 1);
3863          glMatrixMode(GL_MODELVIEW);
3864
3865          if(material.flags.tile)
3866          {
3867             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
3868             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
3869          }
3870          else
3871          {
3872             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
3873             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
3874          }
3875       }
3876       else
3877          glDisable(GL_TEXTURE_2D);
3878
3879       if(mesh.flags.colors)
3880       {
3881          glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
3882          glEnable(GL_COLOR_MATERIAL);
3883       }
3884       else
3885       {
3886          glDisable(GL_COLOR_MATERIAL);
3887          {
3888             float color[4] = { material.diffuse.r, material.diffuse.g, material.diffuse.b, material.opacity };
3889             glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, color);
3890          }
3891          {
3892             float color[4] = { material.ambient.r, material.ambient.g, material.ambient.b, 0 };
3893             glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, color);
3894          }
3895       }
3896       {
3897          float color[4] = { material.specular.r, material.specular.g, material.specular.b, 0 };
3898          glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, color);
3899       }
3900       {
3901          float color[4] = { material.emissive.r, material.emissive.g, material.emissive.b, 0 };
3902          glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, color);
3903       }
3904
3905       glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, &material.power);
3906    }
3907
3908    void FreeMesh(DisplaySystem displaySystem, Mesh mesh)
3909    {
3910       OGLMesh oglMesh = mesh.data;
3911       if(oglMesh)
3912       {
3913          if(!mesh.flags.vertices)
3914          {
3915             oglMesh.vertices.free();
3916             delete mesh.vertices;
3917          }
3918          if(!mesh.flags.normals)
3919          {
3920             oglMesh.normals.free();
3921             delete mesh.normals;
3922          }
3923          if(!mesh.flags.texCoords1)
3924          {
3925             oglMesh.texCoords.free();
3926             delete mesh.texCoords;
3927          }
3928          if(!mesh.flags.texCoords2)
3929          {
3930             oglMesh.texCoords2.free();
3931             // delete mesh.texCoords2;
3932          }
3933          if(!mesh.flags.colors)
3934          {
3935             oglMesh.colors.free();
3936             delete mesh.colors;
3937          }
3938          if(!mesh.flags)
3939          {
3940             delete oglMesh;
3941             mesh.data = null;
3942          }
3943       }
3944    }
3945
3946    bool AllocateMesh(DisplaySystem displaySystem, Mesh mesh, MeshFeatures flags, int nVertices)
3947    {
3948       bool result = false;
3949
3950       if(!mesh.data)
3951          mesh.data = OGLMesh { };
3952       if(mesh.data)
3953       {
3954          if(mesh.nVertices == nVertices)
3955          {
3956             // Same number of vertices, adding features (Leaves the other features pointers alone)
3957             if(mesh.flags != flags)
3958             {
3959                if(!mesh.flags.vertices && flags.vertices)
3960                {
3961                   if(flags.doubleVertices)
3962                   {
3963                      mesh.vertices = (Vector3Df *)new Vector3D[nVertices];
3964                   }
3965                   else
3966                      mesh.vertices = new Vector3Df[nVertices];
3967                }
3968                if(!mesh.flags.normals && flags.normals)
3969                {
3970                   if(flags.doubleNormals)
3971                   {
3972                      mesh.normals = (Vector3Df *)new Vector3D[nVertices];
3973                   }
3974                   else
3975                      mesh.normals = new Vector3Df[nVertices];
3976                }
3977                if(!mesh.flags.texCoords1 && flags.texCoords1)
3978                {
3979                   mesh.texCoords = new Pointf[nVertices];
3980                }
3981                if(!mesh.flags.colors && flags.colors)
3982                {
3983                   mesh.colors = new ColorRGBAf[nVertices];
3984                }
3985             }
3986          }
3987          else
3988          {
3989             // New number of vertices, reallocate all current and new features
3990             flags |= mesh.flags;
3991             if(flags.vertices)
3992             {
3993                if(flags.doubleVertices)
3994                {
3995                   mesh.vertices = (Vector3Df *)renew mesh.vertices Vector3D[nVertices];
3996                }
3997                else
3998                   mesh.vertices = renew mesh.vertices Vector3Df[nVertices];
3999             }
4000             if(flags.normals)
4001             {
4002                if(flags.doubleNormals)
4003                {
4004                   mesh.normals = (Vector3Df *)renew mesh.normals Vector3D[nVertices];
4005                }
4006                else
4007                   mesh.normals = renew mesh.normals Vector3Df[nVertices];
4008             }
4009             if(flags.texCoords1)
4010             {
4011                mesh.texCoords = renew mesh.texCoords Pointf[nVertices];
4012             }
4013             if(flags.colors)
4014             {
4015                mesh.colors = renew mesh.colors ColorRGBAf[nVertices];
4016             }
4017          }
4018          result = true;
4019       }
4020       return result;
4021    }
4022
4023    void UnlockMesh(DisplaySystem displaySystem, Mesh mesh, MeshFeatures flags)
4024    {
4025       OGLMesh oglMesh = mesh.data;
4026       if(!flags) flags = mesh.flags;
4027
4028       if(vboAvailable)
4029       {
4030          if(flags.vertices)
4031             oglMesh.vertices.upload(
4032                mesh.nVertices * (mesh.flags.doubleVertices ? sizeof(Vector3D) : sizeof(Vector3Df)), mesh.vertices); //, GL_STATIC_DRAW_ARB );
4033
4034          if(flags.normals)
4035             oglMesh.normals.upload(
4036                mesh.nVertices * (mesh.flags.doubleNormals ? sizeof(Vector3D) : sizeof(Vector3Df)), mesh.normals); //, GL_STATIC_DRAW_ARB );
4037
4038          if(flags.texCoords1)
4039             oglMesh.texCoords.upload(
4040                mesh.nVertices * sizeof(Pointf), mesh.texCoords); //, GL_STATIC_DRAW_ARB );
4041
4042          if(flags.colors)
4043             oglMesh.colors.upload(
4044                mesh.nVertices * sizeof(ColorRGBAf), mesh.colors); //, GL_STATIC_DRAW_ARB );
4045       }
4046    }
4047
4048    bool LockMesh(DisplaySystem displaySystem, Mesh mesh, MeshFeatures flags)
4049    {
4050       bool result = true;
4051
4052         return result;
4053    }
4054
4055    void FreeIndices(DisplaySystem displaySystem, OGLIndices oglIndices)
4056    {
4057       if(oglIndices)
4058       {
4059          oglIndices.buffer.free();
4060          delete oglIndices.indices;
4061          delete oglIndices;
4062       }
4063    }
4064
4065    void * AllocateIndices(DisplaySystem displaySystem, int nIndices, bool indices32bit)
4066    {
4067       OGLIndices oglIndices = OGLIndices { };
4068       if(oglIndices)
4069       {
4070          oglIndices.indices = (void *)(indices32bit ? new uint32[nIndices] : new uint16[nIndices]);
4071          oglIndices.nIndices = nIndices;
4072       }
4073       return oglIndices;
4074    }
4075
4076    void UnlockIndices(DisplaySystem displaySystem, OGLIndices oglIndices, bool indices32bit, int nIndices)
4077    {
4078       if(vboAvailable)
4079       {
4080          oglIndices.buffer.upload(
4081             nIndices * (indices32bit ? sizeof(uint32) : sizeof(uint16)),
4082             oglIndices.indices); //GL_STATIC_DRAW_ARB);
4083       }
4084    }
4085
4086    uint16 * LockIndices(DisplaySystem displaySystem, OGLIndices oglIndices)
4087    {
4088
4089       return oglIndices.indices;
4090    }
4091
4092    void SelectMesh(Display display, Mesh mesh)
4093    {
4094       //Logf("SelectMesh\n");
4095
4096 #if !defined( __ANDROID__) && !defined(__APPLE__) && !defined(__ODROID__)
4097
4098 #if defined(__WIN32__)
4099       if(glUnlockArraysEXT)
4100 #endif
4101          if(!vboAvailable && display.display3D.mesh)
4102             glUnlockArraysEXT();
4103
4104 #endif
4105       if(mesh)
4106       {
4107          OGLMesh oglMesh = mesh.data;
4108
4109          // *** Vertex Stream ***
4110          glEnableClientState(GL_VERTEX_ARRAY);
4111          if(!display.display3D.collectingHits && oglMesh)
4112          {
4113             oglMesh.vertices.use(vertex, 3, (mesh.flags.doubleVertices ? GL_DOUBLE : GL_FLOAT), 0, oglMesh.vertices.buffer ? null : (double *)mesh.vertices);
4114
4115             // *** Normals Stream ***
4116             if(mesh.normals || mesh.flags.normals)
4117             {
4118                glEnableClientState(GL_NORMAL_ARRAY);
4119                oglMesh.normals.use(normal, 3, GL_FLOAT, 0, oglMesh.normals.buffer ? null : mesh.normals);
4120             }
4121             else
4122                glDisableClientState(GL_NORMAL_ARRAY);
4123
4124             // *** Texture Coordinates Stream ***
4125             if(mesh.texCoords || mesh.flags.texCoords1)
4126             {
4127                glEnableClientState(GL_TEXTURE_COORD_ARRAY);
4128                oglMesh.texCoords.use(texCoord, 2, GL_FLOAT, 0, oglMesh.texCoords.buffer ? null : mesh.texCoords);
4129             }
4130             else
4131                glDisableClientState(GL_TEXTURE_COORD_ARRAY);
4132
4133             // *** Color Stream ***
4134             if(mesh.colors || mesh.flags.colors)
4135             {
4136                glEnableClientState(GL_COLOR_ARRAY);
4137                oglMesh.colors.use(color, 4, GL_FLOAT, 0, oglMesh.colors.buffer ? null : mesh.colors);
4138             }
4139             else
4140                glDisableClientState(GL_COLOR_ARRAY);
4141          }
4142          else
4143          {
4144             noAB.use(vertex, 3, (mesh.flags.doubleVertices ? GL_DOUBLE : GL_FLOAT), 0, (double *)mesh.vertices);
4145             if((mesh.normals || mesh.flags.normals) && !display.display3D.collectingHits)
4146             {
4147                glEnableClientState(GL_NORMAL_ARRAY);
4148                noAB.use(normal, 3, GL_FLOAT, 0, mesh.normals);
4149             }
4150             else
4151                glDisableClientState(GL_NORMAL_ARRAY);
4152             if((mesh.texCoords || mesh.flags.texCoords1) && !display.display3D.collectingHits)
4153             {
4154                glEnableClientState(GL_TEXTURE_COORD_ARRAY);
4155                noAB.use(texCoord, 2, GL_FLOAT, 0, mesh.texCoords);
4156             }
4157             else
4158                glDisableClientState(GL_TEXTURE_COORD_ARRAY);
4159             if((mesh.colors || mesh.flags.colors) && !display.display3D.collectingHits)
4160             {
4161                glEnableClientState(GL_COLOR_ARRAY);
4162                noAB.use(color, 4, GL_FLOAT, 0, mesh.colors);
4163             }
4164             else
4165                glDisableClientState(GL_COLOR_ARRAY);
4166          }
4167
4168 #if !defined(__ANDROID__) && !defined(__APPLE__) && !defined(__ODROID__)
4169
4170 #if defined(__WIN32__)
4171          if(glLockArraysEXT)
4172 #endif
4173             if(!vboAvailable)
4174                glLockArraysEXT(0, mesh.nVertices);
4175
4176 #endif
4177       }
4178    }
4179
4180    void DrawPrimitives(Display display, PrimitiveSingle * primitive, Mesh mesh)
4181    {
4182       //Logf("DrawPrimitives\n");
4183
4184       if(primitive->type.vertexRange)
4185          glDrawArrays(primitiveTypes[primitive->type.primitiveType], primitive->first, primitive->nVertices);
4186       else
4187       {
4188          //    *** Hoping the data won't be uploaded at all (Won't really work if another group of the mesh is using the mesh ) ***
4189          // HACK TO SPEED THINGS UP...
4190 #ifndef __ANDROID__
4191          /*GLBindBuffer(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
4192          if(primitive->nIndices < (mesh.nVertices >> 2) && !primitive->type.indices32bit)
4193          {
4194             int c;
4195             glBegin(primitiveTypes[primitive->type.primitiveType]);
4196             if(primitive->data)
4197             {
4198                OGLIndices oglIndices = primitive->data;
4199                MeshFeatures flags = mesh.flags;
4200                for(c = 0; c<primitive->nIndices; c++)
4201                {
4202                   uint16 index = ((uint16 *) oglIndices.indices)[c];
4203                   if(flags.normals) glNormal3fv((float *)&mesh.normals[index]);
4204                   if(flags.texCoords1) glTexCoord2fv((float *)&mesh.texCoords[index]);
4205                   if(flags.colors) glColor4fv((float *)&mesh.colors[index]);
4206                   glVertex3fv((float *)&mesh.vertices[index]);
4207                }
4208             }
4209             glEnd();
4210          }
4211          else*/
4212 #endif
4213          {
4214             OGLIndices oglIndices = primitive->data;
4215
4216             if(!display.display3D.collectingHits && vboAvailable && oglIndices)
4217             {
4218                if(primitive->type.indices32bit)
4219                   ; //oglIndices.buffer.draw(primitiveTypes[primitive->type.primitiveType], primitive->nIndices, GL_UNSIGNED_SHORT, 0);
4220                else
4221                   oglIndices.buffer.draw(primitiveTypes[primitive->type.primitiveType], primitive->nIndices, GL_UNSIGNED_SHORT, 0);
4222             }
4223             else
4224             {
4225                if(primitive->type.indices32bit)
4226                   glDrawElementsi(primitiveTypes[primitive->type.primitiveType], primitive->nIndices,
4227                      oglIndices ? oglIndices.indices : primitive->indices);
4228                else
4229                   glDrawElements(primitiveTypes[primitive->type.primitiveType], primitive->nIndices,
4230                      GL_UNSIGNED_SHORT, oglIndices ? oglIndices.indices : primitive->indices);
4231             }
4232          }
4233       }
4234    }
4235
4236    void PushMatrix(Display display)
4237    {
4238       glPushMatrix();
4239    }
4240
4241    void PopMatrix(Display display, bool setMatrix)
4242    {
4243       glPopMatrix();
4244    }
4245
4246    void SetTransform(Display display, Matrix transMatrix, bool viewSpace, bool useCamera)
4247    {
4248       Matrix matrix = transMatrix;
4249       Camera camera = useCamera ? display.display3D.camera : null;
4250
4251       if(viewSpace)
4252       {
4253          glLoadIdentity();
4254          glScaled(1.0/nearPlane, 1.0/nearPlane, -1.0/nearPlane);
4255       }
4256       else if(camera)
4257       {
4258          glTranslated(
4259             matrix.m[3][0] - camera.cPosition.x,
4260             matrix.m[3][1] - camera.cPosition.y,
4261             matrix.m[3][2] - camera.cPosition.z);
4262       }
4263       else
4264          glTranslated(
4265             matrix.m[3][0],
4266             matrix.m[3][1],
4267             matrix.m[3][2]);
4268
4269       matrix.m[3][0] = 0;
4270       matrix.m[3][1] = 0;
4271       matrix.m[3][2] = 0;
4272
4273       glMultMatrixd(matrix.array);
4274    }
4275 #endif
4276 }
4277
4278 public void UseSingleGLContext(bool useSingle)
4279 {
4280    useSingleGLContext = useSingle;
4281 }
4282
4283 default dllexport void *
4284 #if defined(__WIN32__)
4285 __attribute__((stdcall))
4286 #endif
4287 IS_GLGetContext(DisplaySystem displaySystem)
4288 {
4289    if(displaySystem)
4290    {
4291 #if defined(__WIN32__)
4292       OGLSystem system = displaySystem.driverData;
4293       return system.glrc;
4294 #elif defined(__ANDROID__) || defined(__ODROID__)
4295       return eglContext;
4296 #else
4297       OGLSystem system = displaySystem.driverData;
4298       return system.glContext;
4299 #endif
4300    }
4301    return null;
4302 }
4303
4304 #endif