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 #ifdef ECERE_MINIGLX
  14
  15 //#include <GL/miniglx.h>
  16
  17 #else
  18
  19 #if defined(__ANDROID__)
  20
  21 #else
  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 0x0500
  73 #define String Sting_
  74 #include <windows.h>
  75 #undef String
  76 #endif
  77
  78 #if defined(__ANDROID__)
  79
  80 #include <GLES/gl.h>
  81 #include <EGL/egl.h>
  82
  83 #else
  84
  85 #include <GL/gl.h>
  86 #include <GL/glext.h>
  87
  88 #endif
  89
  90 import "Display"
  91
  92 #if defined(__unix__) || defined(__APPLE__)
  93
  94 #ifndef __ANDROID__
  95 import "XInterface"
  96 #endif
  97
  98 #endif
  99
 100 static double nearPlane = 1;
 101
 102 #define glLoadMatrix glLoadMatrixd
 103 #define glMultMatrix glMultMatrixd
 104 #define glGetMatrix  glGetDoublev
 105 #define glTranslate glTranslated
 106 #define glScale glScaled
 107
 108 /*
 109 #define glVertex3v glVertex3dv
 110 #define glNormal3v glNormal3dv
 111 */
 112
 113 /*
 114 //#ifdef VERTEX_FORMAT_DOUBLE
 115
 116 #define glLoadMatrix glLoadMatrixd
 117 #define glMultMatrix glMultMatrixd
 118 #define glGetMatrix  glGetDoublev
 119 #define glVertex3v glVertex3dv
 120 #define glNormal3v glNormal3dv
 121 #define glTranslate glTranslated
 122 #define glScale glScaled
 123 //#define GL_VERTEX_FORMAT   GL_DOUBLE
 124
 125 #else
 126
 127 #define glLoadMatrix glLoadMatrixf
 128 #define glMultMatrix glMultMatrixf
 129 #define glGetMatrix  glGetFloatv
 130 #define glVertex3v glVertex3fv
 131 #define glNormal3v glNormal3fv
 132 #define glTranslate glTranslatef
 133 #define glScale glScalef
 134 //#define GL_VERTEX_FORMAT   GL_FLOAT
 135
 136 #endif
 137 */
 138
 139 #define GL_ARRAY_BUFFER_ARB            0x8892
 140 #define GL_ELEMENT_ARRAY_BUFFER_ARB    0x8893
 141 #define GL_STATIC_DRAW_ARB             0x88E4
 142 #define GL_LIGHT_MODEL_COLOR_CONTROL   0x81F8
 143 #define GL_SEPARATE_SPECULAR_COLOR     0x81FA
 144
 145 #define GL_MULTISAMPLE_ARB             0x809D
 146
 147 #if defined(__WIN32__)
 148
 149 #define WGL_SAMPLE_BUFFERS_ARB              0x2041
 150 #define WGL_SAMPLES_ARB                     0x2042
 151
 152 #define  WGL_WGLEXT_VERSION   1
 153 #define  WGL_FRONT_COLOR_BUFFER_BIT_ARB   0x00000001
 154 #define  WGL_BACK_COLOR_BUFFER_BIT_ARB   0x00000002
 155 #define  WGL_DEPTH_BUFFER_BIT_ARB   0x00000004
 156 #define  WGL_STENCIL_BUFFER_BIT_ARB   0x00000008
 157 #define  WGL_NUMBER_PIXEL_FORMATS_ARB   0x2000
 158 #define  WGL_DRAW_TO_WINDOW_ARB   0x2001
 159 #define  WGL_DRAW_TO_BITMAP_ARB   0x2002
 160 #define  WGL_ACCELERATION_ARB   0x2003
 161 #define  WGL_NEED_PALETTE_ARB   0x2004
 162 #define  WGL_NEED_SYSTEM_PALETTE_ARB   0x2005
 163 #define  WGL_SWAP_LAYER_BUFFERS_ARB   0x2006
 164 #define  WGL_SWAP_METHOD_ARB   0x2007
 165 #define  WGL_NUMBER_OVERLAYS_ARB   0x2008
 166 #define  WGL_NUMBER_UNDERLAYS_ARB   0x2009
 167 #define  WGL_TRANSPARENT_ARB   0x200A
 168 #define  WGL_TRANSPARENT_RED_VALUE_ARB   0x2037
 169 #define  WGL_TRANSPARENT_GREEN_VALUE_ARB   0x2038
 170 #define  WGL_TRANSPARENT_BLUE_VALUE_ARB   0x2039
 171 #define  WGL_TRANSPARENT_ALPHA_VALUE_ARB   0x203A
 172 #define  WGL_TRANSPARENT_INDEX_VALUE_ARB   0x203B
 173 #define  WGL_SHARE_DEPTH_ARB   0x200C
 174 #define  WGL_SHARE_STENCIL_ARB   0x200D
 175 #define  WGL_SHARE_ACCUM_ARB   0x200E
 176 #define  WGL_SUPPORT_GDI_ARB   0x200F
 177 #define  WGL_SUPPORT_OPENGL_ARB   0x2010
 178 #define  WGL_DOUBLE_BUFFER_ARB   0x2011
 179 #define  WGL_STEREO_ARB   0x2012
 180 #define  WGL_PIXEL_TYPE_ARB   0x2013
 181 #define  WGL_COLOR_BITS_ARB   0x2014
 182 #define  WGL_RED_BITS_ARB   0x2015
 183 #define  WGL_RED_SHIFT_ARB   0x2016
 184 #define  WGL_GREEN_BITS_ARB   0x2017
 185 #define  WGL_GREEN_SHIFT_ARB   0x2018
 186 #define  WGL_BLUE_BITS_ARB   0x2019
 187 #define  WGL_BLUE_SHIFT_ARB   0x201A
 188 #define  WGL_ALPHA_BITS_ARB   0x201B
 189 #define  WGL_ALPHA_SHIFT_ARB   0x201C
 190 #define  WGL_ACCUM_BITS_ARB   0x201D
 191 #define  WGL_ACCUM_RED_BITS_ARB   0x201E
 192 #define  WGL_ACCUM_GREEN_BITS_ARB   0x201F
 193 #define  WGL_ACCUM_BLUE_BITS_ARB   0x2020
 194 #define  WGL_ACCUM_ALPHA_BITS_ARB   0x2021
 195 #define  WGL_DEPTH_BITS_ARB   0x2022
 196 #define  WGL_STENCIL_BITS_ARB   0x2023
 197 #define  WGL_AUX_BUFFERS_ARB   0x2024
 198 #define  WGL_NO_ACCELERATION_ARB   0x2025
 199 #define  WGL_GENERIC_ACCELERATION_ARB   0x2026
 200 #define  WGL_FULL_ACCELERATION_ARB   0x2027
 201 #define  WGL_SWAP_EXCHANGE_ARB   0x2028
 202 #define  WGL_SWAP_COPY_ARB   0x2029
 203 #define  WGL_SWAP_UNDEFINED_ARB   0x202A
 204 #define  WGL_TYPE_RGBA_ARB   0x202B
 205 #define  WGL_TYPE_COLORINDEX_ARB   0x202C
 206 #define  ERROR_INVALID_PIXEL_TYPE_ARB   0x2043
 207 #define  ERROR_INCOMPATIBLE_DEVICE_CONTEXTS_ARB   0x2054
 208 #define  WGL_DRAW_TO_PBUFFER_ARB   0x202D
 209 #define  WGL_MAX_PBUFFER_PIXELS_ARB   0x202E
 210 #define  WGL_MAX_PBUFFER_WIDTH_ARB   0x202F
 211 #define  WGL_MAX_PBUFFER_HEIGHT_ARB   0x2030
 212 #define  WGL_PBUFFER_LARGEST_ARB   0x2033
 213 #define  WGL_PBUFFER_WIDTH_ARB   0x2034
 214 #define  WGL_PBUFFER_HEIGHT_ARB   0x2035
 215 #define  WGL_PBUFFER_LOST_ARB   0x2036
 216 #define  ERROR_INVALID_PIXEL_TYPE_EXT   0x2043
 217 #define  WGL_NUMBER_PIXEL_FORMATS_EXT   0x2000
 218 #define  WGL_DRAW_TO_WINDOW_EXT   0x2001
 219 #define  WGL_DRAW_TO_BITMAP_EXT   0x2002
 220 #define  WGL_ACCELERATION_EXT   0x2003
 221 #define  WGL_NEED_PALETTE_EXT   0x2004
 222 #define  WGL_NEED_SYSTEM_PALETTE_EXT   0x2005
 223 #define  WGL_SWAP_LAYER_BUFFERS_EXT   0x2006
 224 #define  WGL_SWAP_METHOD_EXT   0x2007
 225 #define  WGL_NUMBER_OVERLAYS_EXT   0x2008
 226 #define  WGL_NUMBER_UNDERLAYS_EXT   0x2009
 227 #define  WGL_TRANSPARENT_EXT   0x200A
 228 #define  WGL_TRANSPARENT_VALUE_EXT   0x200B
 229 #define  WGL_SHARE_DEPTH_EXT   0x200C
 230 #define  WGL_SHARE_STENCIL_EXT   0x200D
 231 #define  WGL_SHARE_ACCUM_EXT   0x200E
 232 #define  WGL_SUPPORT_GDI_EXT   0x200F
 233 #define  WGL_SUPPORT_OPENGL_EXT   0x2010
 234 #define  WGL_DOUBLE_BUFFER_EXT   0x2011
 235 #define  WGL_STEREO_EXT   0x2012
 236 #define  WGL_PIXEL_TYPE_EXT   0x2013
 237 #define  WGL_COLOR_BITS_EXT   0x2014
 238 #define  WGL_RED_BITS_EXT   0x2015
 239 #define  WGL_RED_SHIFT_EXT   0x2016
 240 #define  WGL_GREEN_BITS_EXT   0x2017
 241 #define  WGL_GREEN_SHIFT_EXT   0x2018
 242 #define  WGL_BLUE_BITS_EXT   0x2019
 243 #define  WGL_BLUE_SHIFT_EXT   0x201A
 244 #define  WGL_ALPHA_BITS_EXT   0x201B
 245 #define  WGL_ALPHA_SHIFT_EXT   0x201C
 246 #define  WGL_ACCUM_BITS_EXT   0x201D
 247 #define  WGL_ACCUM_RED_BITS_EXT   0x201E
 248 #define  WGL_ACCUM_GREEN_BITS_EXT   0x201F
 249 #define  WGL_ACCUM_BLUE_BITS_EXT   0x2020
 250 #define  WGL_ACCUM_ALPHA_BITS_EXT   0x2021
 251 #define  WGL_DEPTH_BITS_EXT   0x2022
 252 #define  WGL_STENCIL_BITS_EXT   0x2023
 253 #define  WGL_AUX_BUFFERS_EXT   0x2024
 254 #define  WGL_NO_ACCELERATION_EXT   0x2025
 255 #define  WGL_GENERIC_ACCELERATION_EXT   0x2026
 256 #define  WGL_FULL_ACCELERATION_EXT   0x2027
 257 #define  WGL_SWAP_EXCHANGE_EXT   0x2028
 258 #define  WGL_SWAP_COPY_EXT   0x2029
 259 #define  WGL_SWAP_UNDEFINED_EXT   0x202A
 260 #define  WGL_TYPE_RGBA_EXT   0x202B
 261 #define  WGL_TYPE_COLORINDEX_EXT   0x202C
 262 #define  WGL_DRAW_TO_PBUFFER_EXT   0x202D
 263 #define  WGL_MAX_PBUFFER_PIXELS_EXT   0x202E
 264 #define  WGL_MAX_PBUFFER_WIDTH_EXT   0x202F
 265 #define  WGL_MAX_PBUFFER_HEIGHT_EXT   0x2030
 266 #define  WGL_OPTIMAL_PBUFFER_WIDTH_EXT   0x2031
 267 #define  WGL_OPTIMAL_PBUFFER_HEIGHT_EXT   0x2032
 268 #define  WGL_PBUFFER_LARGEST_EXT   0x2033
 269 #define  WGL_PBUFFER_WIDTH_EXT   0x2034
 270 #define  WGL_PBUFFER_HEIGHT_EXT   0x2035
 271 #define  WGL_DEPTH_FLOAT_EXT   0x2040
 272 #define  WGL_SAMPLE_BUFFERS_3DFX   0x2060
 273 #define  WGL_SAMPLES_3DFX   0x2061
 274 #define  WGL_SAMPLE_BUFFERS_EXT   0x2041
 275 #define  WGL_SAMPLES_EXT   0x2042
 276 #define  WGL_GENLOCK_SOURCE_MULTIVIEW_I3D   0x2044
 277 #define  WGL_GENLOCK_SOURCE_EXTENAL_SYNC_I3D   0x2045
 278 #define  WGL_GENLOCK_SOURCE_EXTENAL_FIELD_I3D   0x2046
 279 #define  WGL_GENLOCK_SOURCE_EXTENAL_TTL_I3D   0x2047
 280 #define  WGL_GENLOCK_SOURCE_DIGITAL_SYNC_I3D   0x2048
 281 #define  WGL_GENLOCK_SOURCE_DIGITAL_FIELD_I3D   0x2049
 282 #define  WGL_GENLOCK_SOURCE_EDGE_FALLING_I3D   0x204A
 283 #define  WGL_GENLOCK_SOURCE_EDGE_RISING_I3D   0x204B
 284 #define  WGL_GENLOCK_SOURCE_EDGE_BOTH_I3D   0x204C
 285 #define  WGL_GAMMA_TABLE_SIZE_I3D   0x204E
 286 #define  WGL_GAMMA_EXCLUDE_DESKTOP_I3D   0x204F
 287 #define  WGL_DIGITAL_VIDEO_CURSOR_ALPHA_FRAMEBUFFER_I3D   0x2050
 288 #define  WGL_DIGITAL_VIDEO_CURSOR_ALPHA_VALUE_I3D   0x2051
 289 #define  WGL_DIGITAL_VIDEO_CURSOR_INCLUDED_I3D   0x2052
 290 #define  WGL_DIGITAL_VIDEO_GAMMA_CORRECTED_I3D   0x2053
 291 #define  WGL_ARB_buffer_region   1
 292 #define  WGL_ARB_extensions_string   1
 293 #define  WGL_ARB_pixel_format   1
 294 #define  WGL_ARB_make_current_read   1
 295 #define  WGL_ARB_pbuffer   1
 296 #define  WGL_EXT_display_color_table   1
 297 #define  WGL_EXT_extensions_string   1
 298 #define  WGL_EXT_make_current_read   1
 299 #define  WGL_EXT_pbuffer   1
 300 #define  WGL_EXT_pixel_format   1
 301 #define  WGL_EXT_swap_control   1
 302 #define  WGL_WGL_EXT_depth_float   1
 303 #define  WGL_WGL_3DFX_multisample   1
 304 #define  WGL_WGL_EXT_multisample   1
 305 #define  WGL_NV_allocate_memory   1
 306
 307 /*
 308 typedef void (APIENTRY * PFNGLACTIVETEXTUREARBPROC) (GLenum target);
 309 typedef void (APIENTRY * PFNGLMULTITEXCOORD2FARBPROC) (GLenum target, GLfloat s, GLfloat t);
 310 typedef void (APIENTRY * PFNGLCLIENTACTIVETEXTUREARBPROC) (GLenum target);
 311 typedef void (APIENTRY * PFNGLLOCKARRAYSEXTPROC) (GLint first, GLsizei count);
 312 typedef void (APIENTRY * PFNGLUNLOCKARRAYSEXTPROC) (void);
 313 */
 314
 315 /*
 316 typedef int (APIENTRY * PFNGLBINDBUFFERARBPROC) (GLenum target, GLuint buffer);
 317 typedef int (APIENTRY * PFNGLDELETEBUFFERSARBPROC) (GLsizei n, const GLuint *buffers);
 318 typedef int (APIENTRY * PFNGLGENBUFFERSARBPROC) (GLsizei n, GLuint *buffers);
 319 typedef int (APIENTRY * PFNGLBUFFERDATAARBPROC) (GLenum target, int size, const GLvoid *data, GLenum usage);
 320 */
 321 typedef int (APIENTRY * PFNWGLCHOOSEPIXELFORMATARBPROC) ();
 322 typedef void * (APIENTRY * PFNWGLCREATEPBUFFERARBPROC) (HDC hDC, int iPixelFormat, int iWidth, int iHeight, const int *piAttribList);
 323 typedef HDC (APIENTRY * PFNWGLGETPBUFFERDCARBPROC) (void * hPbuffer);
 324 typedef int (APIENTRY * PFNWGLRELEASEPBUFFERDCARBPROC) (void * hPbuffer, HDC hDC);
 325 typedef BOOL (APIENTRY * PFNWGLDESTROYPBUFFERARBPROC) (void * hPbuffer);
 326 typedef BOOL (APIENTRY * PFNWGLQUERYPBUFFERARBPROC) (void * hPbuffer, int iAttribute, int *piValue);
 327
 328 static PFNGLMAPBUFFERARBPROC glMapBufferARB = null;
 329 static PFNGLUNMAPBUFFERARBPROC glUnmapBufferARB = null;
 330 static PFNGLACTIVETEXTUREARBPROC glActiveTextureARB = null;
 331 static PFNGLMULTITEXCOORD2FARBPROC glMultiTexCoord2fARB = null;
 332 static PFNGLCLIENTACTIVETEXTUREARBPROC glClientActiveTextureARB = null;
 333 static PFNGLLOCKARRAYSEXTPROC glLockArraysEXT = null;
 334 static PFNGLUNLOCKARRAYSEXTPROC glUnlockArraysEXT = null;
 335 static PFNGLBLENDFUNCSEPARATEPROC glBlendFuncSeparate = null;
 336
 337 static PFNGLGENBUFFERSARBPROC glGenBuffersARB = null;
 338 static PFNGLBINDBUFFERARBPROC glBindBufferARB = null;
 339 static PFNGLBUFFERDATAARBPROC glBufferDataARB = null;
 340 static PFNGLDELETEBUFFERSARBPROC glDeleteBuffersARB = null;
 341 static PFNWGLCHOOSEPIXELFORMATARBPROC wglChoosePixelFormatARB = null;
 342 static PFNWGLGETEXTENSIONSSTRINGARBPROC wglGetExtensionsStringARB = null;
 343 static PFNWGLCREATEPBUFFERARBPROC wglCreatePbufferARB = null;
 344 static PFNWGLGETPBUFFERDCARBPROC wglGetPbufferDCARB = null;
 345 static PFNWGLQUERYPBUFFERARBPROC wglQueryPbufferARB = null;
 346 static PFNWGLDESTROYPBUFFERARBPROC wglDestroyPbufferARB = null;
 347 static PFNWGLRELEASEPBUFFERDCARBPROC wglReleasePbufferDCARB = null;
 348 static PFNWGLBINDTEXIMAGEARBPROC wglBindTexImageARB = null;
 349 static PFNWGLRELEASETEXIMAGEARBPROC wglReleaseTexImageARB = null;
 350
 351 #ifdef WGL_WGLEXT_PROTOTYPES
 352 extern BOOL WINAPI wglSwapIntervalEXT (int);
 353 extern int WINAPI wglGetSwapIntervalEXT (void);
 354 #endif /* WGL_WGLEXT_PROTOTYPES */
 355 typedef BOOL (WINAPI * PFNWGLSWAPINTERVALEXTPROC) (int interval);
 356 typedef int (WINAPI * PFNWGLGETSWAPINTERVALEXTPROC) (void);
 357
 358 static PFNWGLSWAPINTERVALEXTPROC wglSwapIntervalEXT = NULL;
 359
 360 #else
 361
 362 #if defined(__ANDROID__)
 363
 364 // Our own matrix stack
 365 static Matrix matrixStack[3][32];
 366 static int matrixIndex[3];
 367 static int curStack = 0;
 368
 369 // OpenGL ES Porting Kit
 370
 371 #define glBindFramebuffer        glBindFramebufferOES
 372 #define glBindRenderbuffer       glBindRenderbufferOES
 373 #define GL_FRAMEBUFFER           GL_FRAMEBUFFER_OES
 374 #define GL_RENDERBUFFER          GL_RENDERBUFFER_OES
 375 #define glFramebufferTexture2D   glFramebufferTexture2DOES
 376 #define GL_COLOR_ATTACHMENT0     GL_COLOR_ATTACHMENT0_OES
 377 #define glGenFramebuffers        glGenFramebuffersOES
 378 #define glGenRenderbuffers       glGenRenderbuffersOES
 379 #define glDeleteFramebuffers     glDeleteFramebuffersOES
 380 #define glDeleteRenderbuffers    glDeleteRenderbuffersOES
 381
 382 #define GL_POLYGON_STIPPLE 0xFFFF
 383 #define GL_LINE_STIPPLE 0xFFFF
 384 #define GL_LINE 0xFFFF
 385 #define GL_FILL 0xFFFF
 386 #define GL_ALL_ATTRIB_BITS 0xFFFF
 387 #define GL_LIGHT_MODEL_LOCAL_VIEWER 0xFFFF
 388 #define glDrawElementsi(type, count, start)  glDrawElements(type, count, GL_UNSIGNED_SHORT, start)
 389
 390 #define GL_UNSIGNED_INT                         0x1405
 391 #define GL_DOUBLE                               0x140A
 392
 393 #define GL_POLYGON      9
 394 #define GL_QUADS        7
 395
 396 #define glBufferDatai         glesBufferDatai
 397 #define glBufferDatad         glesBufferDatad
 398 #define glVertexPointeri      glesVertexPointeri
 399 #define glVertexPointerd      glesVertexPointerd
 400
 401 #define glRecti               glesRecti
 402 #define glBegin               glesBegin
 403 #define glTexCoord2i          glesTexCoord2i
 404 #define glVertex2i            glesVertex2i
 405 #define glTexCoord2d          glesTexCoord2d
 406 #define glVertex2d            glesVertex2d
 407 #define glTexCoord2f          glesTexCoord2f
 408 #define glVertex2f            glesVertex2f
 409 #define glEnd                 glesEnd
 410 #define glColor3f             glesColor3f
 411 #define glColor4ub            glesColor4ub
 412 #define glColor4fv            glesColor4fv
 413 #define glLineStipple         glesLineStipple
 414 #define glNormal3fv           glesNormal3fv
 415 #define glTexCoord2fv         glesTexCoord2fv
 416 #define glColorMaterial       glesColorMaterial
 417
 418 #define glLoadMatrixd         glesLoadMatrixd
 419 #define glMultMatrixd         glesMultMatrixd
 420 #define glFrustum             glesFrustum
 421 #define glOrtho               glesOrtho
 422 #define glScaled              glesScaled
 423 #define glTranslated          glesTranslated
 424 #define glRotated             glesRotated
 425 #define glVertex3d            glesVertex3d
 426 #define glVertex3f            glesVertex3f
 427 #define glVertex3fv           glesVertex3fv
 428 #define glLightModeli         glesLightModeli
 429
 430 #define APIENTRY
 431 //#define GL_QUADS              0
 432 #define GL_QUAD_STRIP         0
 433 //#define GL_DOUBLE             0
 434 //#define GL_UNSIGNED_INT       0
 435 //#define GL_FILL               0
 436 //#define GL_LINE               0
 437 //#define GL_LINE_STIPPLE       0
 438 #define GL_BGRA_EXT           0
 439 #define GL_UNPACK_ROW_LENGTH  0
 440 #define GL_UNPACK_SKIP_PIXELS 0
 441 #define GL_UNPACK_SKIP_ROWS   0
 442 #define GL_RGBA8              0
 443 #define GL_PACK_ROW_LENGTH    0
 444 #define GL_PACK_SKIP_ROWS     0
 445 #define GL_PACK_SKIP_PIXELS   0
 446
 447 static EGLDisplay eglDisplay;
 448 static EGLSurface eglSurface;
 449 static EGLContext eglContext;
 450 static int eglWidth, eglHeight;
 451
 452 static bool egl_init_display(ANativeWindow* window)
 453 {
 454    const EGLint attribs[] =
 455    {
 456       EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
 457       EGL_BLUE_SIZE, 8,
 458       EGL_GREEN_SIZE, 8,
 459       EGL_RED_SIZE, 8,
 460       EGL_DEPTH_SIZE, 24,
 461       /*EGL_SAMPLE_BUFFERS, 1,
 462       EGL_SAMPLES, 0, //2,*/
 463       EGL_NONE
 464    };
 465    EGLint w, h, dummy, format;
 466    EGLint numConfigs;
 467    EGLConfig config;
 468    EGLSurface surface;
 469    EGLContext context;
 470
 471    EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
 472    eglInitialize(display, 0, 0);
 473    eglChooseConfig(display, attribs, &config, 1, &numConfigs);
 474    eglGetConfigAttrib(display, config, EGL_NATIVE_VISUAL_ID, &format);
 475
 476    surface = eglCreateWindowSurface(display, config, window, null);
 477    context = eglCreateContext(display, config, null, null);
 478
 479    if(!eglMakeCurrent(display, surface, surface, context))
 480       return false;
 481
 482    eglQuerySurface(display, surface, EGL_WIDTH, &w);
 483    eglQuerySurface(display, surface, EGL_HEIGHT, &h);
 484
 485    eglDisplay = display;
 486    eglContext = context;
 487    eglSurface = surface;
 488    eglWidth = w;
 489    eglHeight = h;
 490
 491    glEnableClientState(GL_VERTEX_ARRAY);
 492    /*
 493    // Initialize GL state.
 494    glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
 495    glEnable(GL_CULL_FACE);
 496    glShadeModel(GL_SMOOTH);
 497    glDisable(GL_DEPTH_TEST);
 498    */
 499    glDisable(GL_CULL_FACE);
 500    glDisable(GL_DEPTH_TEST);
 501
 502    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 503    glEnable(GL_BLEND);
 504
 505    matrixStack[0][0].Identity();
 506    matrixStack[1][0].Identity();
 507    matrixStack[2][0].Identity();
 508
 509    glesMatrixMode(GL_MODELVIEW);
 510    glScaled(1.0, 1.0, -1.0);
 511    glesMatrixMode(GL_PROJECTION);
 512    glShadeModel(GL_FLAT);
 513
 514    glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
 515    glFogi(GL_FOG_MODE, GL_EXP);
 516    glFogf(GL_FOG_DENSITY, 0);
 517    glEnable(GL_NORMALIZE);
 518    glDepthFunc(GL_LESS);
 519    glClearDepth(1.0);
 520    glDisable(GL_MULTISAMPLE_ARB);
 521
 522    glViewport(0,0,w,h);
 523    glesLoadIdentity();
 524    glOrtho(0,w,h,0,0.0,1.0);
 525
 526    currentVertexBuffer = 0;
 527    return true;
 528 }
 529
 530 static void egl_term_display()
 531 {
 532    if(stippleTexture)
 533    {
 534       glDeleteTextures(1, (int *)&stippleTexture);
 535       stippleTexture = 0;
 536    }
 537    if(eglDisplay != EGL_NO_DISPLAY)
 538    {
 539       eglMakeCurrent(eglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
 540       if(eglContext != EGL_NO_CONTEXT)
 541          eglDestroyContext(eglDisplay, eglContext);
 542       if(eglSurface != EGL_NO_SURFACE)
 543          eglDestroySurface(eglDisplay, eglSurface);
 544       eglTerminate(eglDisplay);
 545    }
 546    eglDisplay = EGL_NO_DISPLAY;
 547    eglContext = EGL_NO_CONTEXT;
 548    eglSurface = EGL_NO_SURFACE;
 549 }
 550
 551 // OpenGL Immediate Mode Porting Kit
 552 static int beginCount;
 553 static int vertexCount;
 554 static int normalCount;
 555 static float *vertexPointer;
 556 static float *normalPointer;
 557 static GLenum beginMode;
 558 static unsigned int beginBufferSize, normalBufferSize;
 559 static int numVertexCoords = 2;
 560
 561 void glesRecti(int a, int b, int c, int d)
 562 {
 563    glBegin(GL_QUADS);
 564    glVertex2i(a, b);
 565    glVertex2i(a, d);
 566    glVertex2i(c, d);
 567    glVertex2i(c, b);
 568    glEnd();
 569 }
 570
 571 void glesBegin(GLenum mode)
 572 {
 573    beginMode = mode;
 574    beginCount = 0;
 575    vertexCount = 0;
 576    if(!vertexPointer)
 577    {
 578       normalBufferSize = beginBufferSize = 1024;  // default number of vertices
 579       vertexPointer = new float[beginBufferSize * 5];
 580       normalPointer = new float[normalBufferSize * 3];
 581    }
 582 }
 583
 584 void glesTexCoord2f(float x, float y)
 585 {
 586    int count = vertexCount;
 587
 588    if(vertexCount + numVertexCoords > beginBufferSize)
 589    {
 590       beginBufferSize = beginBufferSize + beginBufferSize/2;
 591       vertexPointer = renew vertexPointer float[beginBufferSize * 5];
 592    }
 593
 594    vertexPointer[count*(2+numVertexCoords)  ] = x;
 595    vertexPointer[count*(2+numVertexCoords)+1] = y;
 596    count++;
 597
 598    if(beginMode == GL_QUADS && ((beginCount % 4) == 3))
 599    {
 600       vertexPointer[count*(2+numVertexCoords)  ] = vertexPointer[(count-4)*(2+numVertexCoords)];
 601       vertexPointer[count*(2+numVertexCoords)+1] = vertexPointer[(count-4)*(2+numVertexCoords)+1];
 602       count++;
 603       vertexPointer[count*(2+numVertexCoords)  ] = vertexPointer[(count-3)*(2+numVertexCoords)];
 604       vertexPointer[count*(2+numVertexCoords)+1] = vertexPointer[(count-3)*(2+numVertexCoords)+1];
 605       count++;
 606    }
 607 }
 608 void glesTexCoord2i(int x, int y)       { glesTexCoord2f((float)x, (float)y); }
 609 void glesTexCoord2d(double x, double y) { glesTexCoord2f((float)x, (float)y); }
 610 void glesTexCoord2fv(float * a)         { glesTexCoord2f(a[0], a[1]); }
 611
 612 void glesVertex2f(float x, float y)
 613 {
 614    numVertexCoords = 2;
 615    if(vertexCount + 4 > beginBufferSize)
 616    {
 617       beginBufferSize = beginBufferSize + beginBufferSize/2;
 618       vertexPointer = renew vertexPointer float[beginBufferSize * 5];
 619    }
 620
 621    vertexPointer[vertexCount*4+2] = x;
 622    vertexPointer[vertexCount*4+3] = y;
 623    vertexCount++;
 624
 625    if(beginMode == GL_QUADS && ((beginCount % 4) == 3))
 626    {
 627       vertexPointer[vertexCount*4+2] = vertexPointer[(vertexCount-4)*4+2];
 628       vertexPointer[vertexCount*4+3] = vertexPointer[(vertexCount-4)*4+3];
 629       vertexCount++;
 630       vertexPointer[vertexCount*4+2] = vertexPointer[(vertexCount-3)*4+2];
 631       vertexPointer[vertexCount*4+3] = vertexPointer[(vertexCount-3)*4+3];
 632       vertexCount++;
 633    }
 634    beginCount++;
 635 }
 636 void glesVertex2i(int x, int y)         { glesVertex2f((float)x, (float)y); }
 637 void glesVertex2d(double x, double y)   { glesVertex2f((float)x, (float)y); }
 638
 639 void glesEnd(void)
 640 {
 641    int mode = beginMode;
 642    if(mode == GL_QUADS)        mode = GL_TRIANGLES;
 643    else if(mode == GL_POLYGON) mode = GL_TRIANGLE_FAN;
 644    GLSelectVBO(0);
 645    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 646    glTexCoordPointer(numVertexCoords, GL_FLOAT, (numVertexCoords+2)*sizeof(float),vertexPointer);
 647    glVertexPointer  (numVertexCoords, GL_FLOAT, (numVertexCoords+2)*sizeof(float),vertexPointer+2);
 648    if(normalCount && normalCount == vertexCount)
 649    {
 650       glEnableClientState(GL_NORMAL_ARRAY);
 651       glNormalPointer  (GL_FLOAT, 3*sizeof(float),normalPointer);
 652    }
 653
 654    glDrawArrays(mode, 0, vertexCount);
 655    if(normalCount)
 656       glDisableClientState(GL_NORMAL_ARRAY);
 657    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
 658    normalCount = 0;
 659 }
 660
 661 // Vertex Pointer
 662 static float *floatVPBuffer = null;
 663 static short *shortVPBuffer = null;
 664 static unsigned int shortVPSize = 0, floatVPSize = 0;
 665
 666 // Buffer Data
 667 //static float *floatVPBuffer = null;  // For floats we reuse floatVPBuffer
 668 static unsigned short *shortBDBuffer = null;
 669 static unsigned int shortBDSize = 0/*, floatVPSize = 0*/;
 670
 671 void glesVertexPointeri(int numCoords, int stride, int *pointer, int numVertices)
 672 {
 673    if(pointer)
 674    {
 675       int i;
 676       if(numVertices*numCoords > shortVPSize)
 677       {
 678          shortVPSize = numVertices*numCoords;
 679          shortVPBuffer = renew shortVPBuffer short[shortVPSize];
 680       }
 681       for(i = 0; i < numVertices*numCoords; i++)
 682          shortVPBuffer[i] = (short)pointer[i];
 683       glVertexPointer(numCoords, GL_SHORT, stride, shortVPBuffer);
 684    }
 685    else
 686       glVertexPointer(numCoords, GL_SHORT, stride, 0);
 687 }
 688
 689 void glesVertexPointerd(int numCoords, int stride, double *pointer, int numVertices)
 690 {
 691    if(pointer)
 692    {
 693       int i;
 694       if(numVertices*numCoords > floatVPSize)
 695       {
 696          floatVPSize = numVertices*numCoords;
 697          floatVPBuffer = renew floatVPBuffer float[floatVPSize];
 698       }
 699       for(i = 0; i < numVertices*numCoords; i++)
 700          floatVPBuffer[i] = (float)pointer[i];
 701       glVertexPointer(numCoords, GL_FLOAT, stride, floatVPBuffer);
 702    }
 703    else
 704       glVertexPointer(numCoords, GL_FLOAT, stride, 0);
 705 }
 706
 707 void glesTexReuseIntVP(int numCoords)
 708 {
 709    glTexCoordPointer(numCoords, GL_SHORT, 0, floatVPBuffer);
 710 }
 711
 712 void glesTexReuseDoubleVP(int numCoords)
 713 {
 714    glTexCoordPointer(numCoords, GL_FLOAT, 0, floatVPBuffer);
 715 }
 716
 717 void glesColor3f( float r, float g, float b )
 718 {
 719    glColor4f(r, g, b, 1.0f);
 720 }
 721
 722 void glesColor4ub(unsigned char r, unsigned char g, unsigned char b, unsigned char a)
 723 {
 724    glColor4f(r/255.0f, g/255.0f, b/255.0f, a/255.0f);
 725 }
 726
 727 void glesColor4fv(float * a)
 728 {
 729    glColor4f(a[0], a[1], a[2], a[3]);
 730 }
 731
 732 void glesBufferDatad(int target, int size, void * data, int usage)
 733 {
 734    int numElems = size/sizeof(double);
 735    double * dblPtr = (double *)data;
 736    int i;
 737    if (numElems > floatVPSize)
 738    {
 739       floatVPSize = numElems;
 740       floatVPBuffer = renew floatVPBuffer float[floatVPSize];
 741    }
 742    for (i=0; i< numElems; i++)
 743       floatVPBuffer[i] = (float)dblPtr[i];
 744
 745    glBufferData(target, numElems*sizeof(float), floatVPBuffer, usage);
 746 }
 747
 748 void glesBufferDatai(int target, int size, void * data, int usage)
 749 {
 750    int numElems = size/sizeof(unsigned int);
 751    unsigned int * pointer = (unsigned int *)data;
 752    int i;
 753    if (numElems > shortBDSize)
 754    {
 755       shortBDSize = numElems;
 756       shortBDBuffer = renew shortBDBuffer uint16[shortBDSize];
 757    }
 758    for (i=0; i< numElems; i++)
 759       shortBDBuffer[i] = (unsigned short)pointer[i];
 760
 761    glBufferData(target, numElems*sizeof(unsigned short), shortBDBuffer, usage);
 762 }
 763
 764 // *** Our Custom Matrix Stack ***
 765
 766 static void LoadCurMatrix()
 767 {
 768    double * i = matrixStack[curStack][matrixIndex[curStack]].array;
 769    float m[16] =
 770    {
 771       (float)i[0],(float)i[1],(float)i[2],(float)i[3],
 772       (float)i[4],(float)i[5],(float)i[6],(float)i[7],
 773       (float)i[8],(float)i[9],(float)i[10],(float)i[11],
 774       (float)i[12],(float)i[13],(float)i[14],(float)i[15]
 775    };
 776    glLoadMatrixf(m);
 777 }
 778
 779 void glesLoadIdentity()
 780 {
 781    matrixStack[curStack][matrixIndex[curStack]].Identity();
 782    LoadCurMatrix();
 783 }
 784
 785 void glesPushMatrix()
 786 {
 787    if(matrixIndex[curStack] + 1 < sizeof(matrixStack[0]) / sizeof(Matrix))
 788    {
 789       matrixIndex[curStack]++;
 790       memcpy(matrixStack[curStack][matrixIndex[curStack]].array, matrixStack[curStack][matrixIndex[curStack]-1].array, sizeof(Matrix));
 791    }
 792 }
 793
 794 void glesPopMatrix()
 795 {
 796    if(matrixIndex[curStack] > 0)
 797    {
 798       matrixIndex[curStack]--;
 799       LoadCurMatrix();
 800    }
 801 }
 802
 803 void glesLoadMatrixd(double * i)
 804 {
 805    memcpy(matrixStack[curStack][matrixIndex[curStack]].array, i, sizeof(Matrix));
 806    LoadCurMatrix();
 807 }
 808
 809 void glesOrtho( double l, double r, double b, double t, double n, double f )
 810 {
 811    Matrix m =
 812    { {
 813       (2 / (r - l)), 0, 0, 0,
 814       0, (2 / (t - b)), 0, 0,
 815       0, 0, (-2 / (f - n)), 0,
 816       (-(r + l) / (r - l)), (-(t + b) / (t - b)), (-(f + n) / (f - n)), 1
 817    } }, res;
 818    res.Multiply(m, matrixStack[curStack][matrixIndex[curStack]]);
 819    matrixStack[curStack][matrixIndex[curStack]] = res;
 820    LoadCurMatrix();
 821 }
 822
 823 void glesFrustum( double l, double r, double b, double t, double n, double f )
 824 {
 825    nearPlane = n;
 826    n = 1;
 827    l /= nearPlane;
 828    r /= nearPlane;
 829    b /= nearPlane;
 830    t /= nearPlane;
 831    f /= nearPlane;
 832    {
 833       double A = ((r + l) / (r - l));
 834       double B = ((t + b) / (t - b));
 835       double C = (-(f + n) / (f - n));
 836       double D = (-2*f*n/(f-n));
 837       Matrix m =
 838       { {
 839          (2.0*n / (r - l)), 0, 0, 0,
 840          0, (2.0*n / (t - b)), 0, 0,
 841          A, B,             C,-1,
 842          0, 0,             D, 0
 843       } }, res;
 844       res.Multiply(m, matrixStack[curStack][matrixIndex[curStack]]);
 845       matrixStack[curStack][matrixIndex[curStack]] = res;
 846       LoadCurMatrix();
 847    }
 848 }
 849
 850 void glesRotated( double a, double b, double c, double d )
 851 {
 852    Matrix m;
 853    Quaternion q;
 854    q.RotationAxis({(float)b,(float)-c,(float)d}, a );
 855    m.RotationQuaternion(q);
 856    matrixStack[curStack][matrixIndex[curStack]].Rotate(q);
 857    LoadCurMatrix();
 858 }
 859 void glesScaled( double a, double b, double c )
 860 {
 861    Matrix m, r;
 862
 863    m.Identity();
 864    m.Scale(a,b,c);
 865    r.Multiply(m, matrixStack[curStack][matrixIndex[curStack]]);
 866    matrixStack[curStack][matrixIndex[curStack]] = r;
 867    LoadCurMatrix();
 868 }
 869
 870 void glesTranslated( double a, double b, double c )
 871 {
 872    Matrix m, r;
 873
 874    m.Identity();
 875    m.Translate(a,b,c);
 876    r.Multiply(m, matrixStack[curStack][matrixIndex[curStack]]);
 877    matrixStack[curStack][matrixIndex[curStack]] = r;
 878    LoadCurMatrix();
 879 }
 880
 881 void glesMultMatrixd( double * i )
 882 {
 883    Matrix r;
 884    r.Multiply((Matrix *)i, matrixStack[curStack][matrixIndex[curStack]]);
 885    matrixStack[curStack][matrixIndex[curStack]] = r;
 886    LoadCurMatrix();
 887 }
 888
 889 void glesMatrixMode(int mode)
 890 {
 891    curStack = mode == GL_MODELVIEW ? 0 : mode == GL_PROJECTION ? 1 : 2;
 892    glMatrixMode(mode);
 893 }
 894
 895 #define glPushMatrix          glesPushMatrix
 896 #define glPopMatrix           glesPopMatrix
 897 #define glLoadIdentity        glesLoadIdentity
 898 #define glMatrixMode          glesMatrixMode
 899
 900 /* Using the built-in matrix stack
 901 void glesLoadMatrixd( double * i )
 902 {
 903    float m[16] =
 904    {
 905       (float)i[0],(float)i[1],(float)i[2],(float)i[3],
 906       (float)i[4],(float)i[5],(float)i[6],(float)i[7],
 907       (float)i[8],(float)i[9],(float)i[10],(float)i[11],
 908       (float)i[12],(float)i[13],(float)i[14],(float)i[15]
 909    };
 910    glLoadMatrixf(m);
 911 }
 912
 913 void glesOrtho( double l, double r, double b, double t, double n, double f )
 914 {
 915    float matrix[4][4] =
 916    {
 917       { (float)(2 / (r - l)), 0, 0, 0 },
 918       { 0, (float)(2 / (t - b)), 0, 0 },
 919       { 0, 0, (float)(-2 / (f - n)), 0 },
 920       { (float)(-(r + l) / (r - l)), (float)(-(t + b) / (t - b)), (float)(-(f + n) / (f - n)), 1 }
 921    };
 922    glMultMatrixf((float *)matrix);
 923 }
 924
 925 void glesFrustum( double l, double r, double b, double t, double n, double f )
 926 {
 927    float A = (float)((r + l) / (r - l));
 928    float B = (float)((t + b) / (t - b));
 929    float C = (float)(-(f + n) / (f - n));
 930    float D = (float)(-2*f*n/(f-n));
 931    float matrix[4][4] =
 932    {
 933       { (float)(2*n / (r - l)), 0, 0, 0 },
 934       { 0, (float)(2*n / (t - b)), 0, 0 },
 935       { A, B,             C,-1 },
 936       { 0, 0,             D, 0 }
 937    };
 938    glMultMatrixf((float *)matrix);
 939 }
 940
 941 void glesRotated( double a, double b, double c, double d ) { glRotatef((float)a, (float)b, (float)c, (float)d); }
 942 void glesScaled( double a, double b, double c ) { glScalef((float)a, (float)b, (float)c); }
 943 void glesTranslated( double a, double b, double c ) { glTranslatef((float)a, (float)b, (float)c); }
 944
 945 void glesMultMatrixd( double * i )
 946 {
 947    float m[16] =
 948    {
 949       (float)i[0], (float)i[1], (float)i[2], (float)i[3],
 950       (float)i[4], (float)i[5], (float)i[6], (float)i[7],
 951       (float)i[8], (float)i[9], (float)i[10], (float)i[11],
 952       (float)i[12], (float)i[13], (float)i[14], (float)i[15]
 953    };
 954    glMultMatrixf(m);
 955 }
 956 */
 957
 958 // Need to do these...
 959 void glesVertex3f( float x, float y, float z )
 960 {
 961    numVertexCoords = 3;
 962    if(vertexCount + 4 > beginBufferSize)
 963    {
 964       beginBufferSize = beginBufferSize + beginBufferSize/2;
 965       vertexPointer = renew vertexPointer float[beginBufferSize * 5];
 966    }
 967
 968    vertexPointer[vertexCount*5+2] = x;
 969    vertexPointer[vertexCount*5+3] = y;
 970    vertexPointer[vertexCount*5+4] = z;
 971    vertexCount++;
 972
 973    if(beginMode == GL_QUADS && ((beginCount % 4) == 3))
 974    {
 975       vertexPointer[vertexCount*5+2] = vertexPointer[(vertexCount-4)*5+2];
 976       vertexPointer[vertexCount*5+3] = vertexPointer[(vertexCount-4)*5+3];
 977       vertexPointer[vertexCount*5+4] = vertexPointer[(vertexCount-4)*5+4];
 978       vertexCount++;
 979       vertexPointer[vertexCount*5+2] = vertexPointer[(vertexCount-3)*5+2];
 980       vertexPointer[vertexCount*5+3] = vertexPointer[(vertexCount-3)*5+3];
 981       vertexPointer[vertexCount*5+4] = vertexPointer[(vertexCount-3)*5+4];
 982       vertexCount++;
 983    }
 984    beginCount++;
 985 }
 986
 987 void glesVertex3d( double x, double y, double z )  { glesVertex3f((float)x, (float)y, (float)z); }
 988 void glesVertex3fv( float* coords )                { glesVertex3f(coords[0], coords[1], coords[2]); }
 989
 990 void glesNormal3f(float x, float y, float z)
 991 {
 992    normalCount = vertexCount;
 993    if(vertexCount + 4 > normalBufferSize)
 994    {
 995       normalBufferSize = normalBufferSize + normalBufferSize/2;
 996       normalPointer = renew normalPointer float[normalBufferSize * 2];
 997    }
 998
 999    normalPointer[normalCount*3+0] = x;
1000    normalPointer[normalCount*3+1] = y;
1001    normalPointer[normalCount*3+2] = z;
1002    normalCount++;
1003
1004    if(beginMode == GL_QUADS && ((beginCount % 4) == 3))
1005    {
1006       normalPointer[normalCount*3+0] = normalPointer[(normalCount-4)*3+0];
1007       normalPointer[normalCount*3+1] = normalPointer[(normalCount-4)*3+1];
1008       normalPointer[normalCount*3+2] = normalPointer[(normalCount-4)*3+2];
1009       normalCount++;
1010       normalPointer[normalCount*3+0] = normalPointer[(normalCount-3)*3+0];
1011       normalPointer[normalCount*3+1] = normalPointer[(normalCount-3)*3+1];
1012       normalPointer[normalCount*3+2] = normalPointer[(normalCount-3)*3+2];
1013       normalCount++;
1014    }
1015 }
1016 void glesNormal3fd(double x, double y, double z)         { glesNormal3f((float)x, (float)y, (float)z); }
1017 void glesNormal3fv(float * coords)                       { glesNormal3f(coords[0], coords[1], coords[2]); }
1018
1019 void glesColorMaterial(int a, int b)
1020 {
1021    PrintLn("glColorMaterial stub");
1022 }
1023
1024 void glesTerminate()
1025 {
1026    delete vertexPointer;
1027    beginBufferSize = 0;
1028
1029    delete floatVPBuffer;
1030    shortVPSize = 0;
1031
1032    delete shortVPBuffer;
1033    floatVPSize = 0;
1034
1035    delete shortBDBuffer;
1036    shortBDSize = 0;
1037 }
1038
1039 static int stippleTexture;
1040 static bool stippleEnabled;
1041
1042 void glesLineStipple( int i, unsigned short j )
1043 {
1044    uint texture[1*16];
1045    int c;
1046    int x;
1047    for(x = 0; x < 16; x++)
1048    {
1049       bool v = (j & (1 << x)) != 0;
1050       texture[x] = v ? 0xFFFFFFFF : 0;
1051    }
1052    if(!stippleTexture)
1053       glGenTextures(1, &stippleTexture);
1054    glBindTexture(GL_TEXTURE_2D, stippleTexture);
1055    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 16, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, texture);
1056    glEnable(GL_TEXTURE_2D);
1057    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
1058    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
1059    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
1060    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
1061    glMatrixMode(GL_TEXTURE);
1062    glLoadIdentity();
1063    //glTranslated(1.0/backAttrib->texW/2.0f, 1.0/backAttrib->texH/2.0f, 0.0f);
1064    glScaled(i/16.0, 1, 1.0f);
1065    glTranslated(0.5, 0.5, 0);
1066    glMatrixMode(GL_PROJECTION);
1067 }
1068
1069 void glesLightModeli( unsigned int pname, int param )
1070 {
1071    if(pname == GL_LIGHT_MODEL_TWO_SIDE)
1072       glLightModelf(GL_LIGHT_MODEL_TWO_SIDE, param);
1073 }
1074
1075 void glClearDepth( double depth ) { glClearDepthf((float)depth); }
1076 void glFogi( unsigned int pname, int param ) { }
1077 void glPolygonMode( unsigned int i, unsigned int j ) { }
1078
1079
1080 // *** Picking won't be supported for now ***
1081 void glPushName( unsigned int i ) { }
1082 void glLoadName( unsigned int i ) { }
1083 void glPopName() { }
1084
1085 // Probably replace by regular glBlendFunc ...
1086 void glBlendFuncSeparate(int a, int b, int c, int d)
1087 {
1088    glBlendFunc(a, b);
1089 }
1090
1091 // For direct pixel blitting...
1092 void glRasterPos2d(double a, double b) { }
1093 void glPixelZoom(float a, float b) { }
1094 void glDrawPixels(int a, int b, int c, int d, void * e) { }
1095
1096 #else
1097
1098 /* Non OpenGL ES friendly stuff
1099 #undef GL_UNSIGNED_INT
1100 #undef GL_DOUBLE
1101 #undef GL_INT
1102 //#undef GL_POLYGON
1103 //#undef GL_QUADS
1104 #undef GL_QUAD_STRIP
1105 #undef GL_POLYGON_STIPPLE
1106 #undef GL_LINE_STIPPLE
1107 #undef GL_LINE
1108 #undef GL_FILL
1109 #undef GL_ALL_ATTRIB_BITS
1110 #undef GL_LIGHT_MODEL_LOCAL_VIEWER
1111 */
1112
1113 #endif
1114
1115 #if !defined(__APPLE__)
1116 void (APIENTRY * glBindBufferARB) (GLenum target, GLuint buffer);
1117 void (APIENTRY * glGenBuffersARB) (GLsizei n, GLuint *buffers);
1118 void (APIENTRY * glDeleteBuffersARB) (GLsizei n, const GLuint *buffers);
1119 void (APIENTRY * glBufferDataARB) (GLenum target, int size, const GLvoid *data, GLenum usage);
1120 #endif
1121
1122 #endif
1123
1124 static int currentVertexBuffer;
1125
1126 bool GLSelectVBO(uint vbo)
1127 {
1128    if(currentVertexBuffer != vbo)
1129    {
1130       GLBindBuffer(GL_ARRAY_BUFFER, vbo);
1131       currentVertexBuffer = vbo;
1132       return true;
1133    }
1134    return false;
1135 }
1136
1137 void GLGenBuffers(int count, uint * buffer)
1138 {
1139 #ifdef __ANDROID__
1140    glGenBuffers(count, buffer);
1141 #else
1142    if(glGenBuffersARB)
1143       glGenBuffersARB(count, buffer);
1144 #endif
1145 }
1146
1147 void GLDeleteBuffers(int count, uint * buffer)
1148 {
1149 #ifdef __ANDROID__
1150    glDeleteBuffers(count, buffer);
1151 #else
1152    if(glDeleteBuffersARB)
1153       glDeleteBuffersARB(count, buffer);
1154 #endif
1155 }
1156
1157 void GLBindBuffer(int target, uint buffer)
1158 {
1159 #ifdef __ANDROID__
1160    glBindBuffer(target, buffer);
1161 #else
1162    if(glBindBufferARB)
1163       glBindBufferARB(target, buffer);
1164 #endif
1165 }
1166
1167 void GLBufferData(int type, GLenum target, int size, const GLvoid *data, GLenum usage)
1168 {
1169 #ifdef __ANDROID__
1170    if(type == GL_DOUBLE)
1171       glesBufferDatad(target, size, data, usage);
1172    else if(type == GL_UNSIGNED_INT)
1173       glesBufferDatai(target, size, data, usage);
1174    else
1175       glBufferData(target, size, data, usage);
1176 #else
1177    if(glBufferDataARB)
1178       glBufferDataARB(target, size, data, usage);
1179
1180 #endif
1181 }
1182
1183 static int displayWidth, displayHeight;
1184
1185 #define GL_CLAMP_TO_EDGE 0x812F
1186
1187 static bool vboAvailable;
1188
1189 static bool useSingleGLContext = false;
1190 class OGLDisplay : struct
1191 {
1192 #if defined(__WIN32__)
1193    HDC hdc;
1194    HGLRC glrc;
1195
1196    HBITMAP memBitmap;
1197    HDC memDC;
1198    byte * picture;
1199    uint stride;
1200    void * pBuffer;
1201    /*
1202    int imageBuffers[2];
1203    byte * pboMemory1, * pboMemory2;
1204    */
1205 #else
1206    GLXContext glContext;
1207
1208    Pixmap pixmap;
1209    XShmSegmentInfo shminfo;
1210    XImage * image;
1211    XShmSegmentInfo shminfoShape;
1212    XImage * shapeImage;
1213    byte * picture;
1214    uint stride;
1215    GLXPbuffer pBuffer;
1216    X11Picture windowPicture;
1217    X11Picture pixmapPicture;
1218    Pixmap shapePixmap;
1219    X11Picture shapePicture;
1220 #endif
1221
1222    ColorAlpha * flippingBuffer;
1223    int flipBufH, flipBufW;
1224    bool depthWrite;
1225    int x, y;
1226 };
1227
1228 class OGLSystem : struct
1229 {
1230    int maxTextureSize;
1231    bool loadingFont;
1232    bool pow2textures;
1233 #if defined(__WIN32__)
1234    PIXELFORMATDESCRIPTOR pfd;
1235    int format;
1236    HDC hdc;
1237    HGLRC glrc;
1238    HWND hwnd;
1239 #else
1240    XVisualInfo * visualInfo;
1241    GLXContext glContext;
1242    GLXDrawable glxDrawable;
1243 #endif
1244 };
1245
1246 class OGLSurface : struct
1247 {
1248    Font font;
1249    bool opaqueText;
1250    int xOffset;
1251    bool writingText;
1252
1253    float foreground[4], background[4], bitmapMult[4];
1254 } OGLSurface;
1255
1256 class OGLMesh : struct
1257 {
1258    int vertices;
1259    int normals;
1260    int texCoords;
1261    int texCoords2;
1262    int colors;
1263 };
1264
1265 class OGLIndices : struct
1266 {
1267    uint16 * indices;
1268    int buffer;
1269    int nIndices;
1270 };
1271
1272 #if !defined(ECERE_NO3D) && !defined(ECERE_VANILLA)
1273 static int primitiveTypes[RenderPrimitiveType] =
1274 {
1275    GL_POINTS, GL_LINES, GL_TRIANGLES, GL_TRIANGLE_STRIP, GL_TRIANGLE_FAN, GL_QUADS, GL_QUAD_STRIP, GL_LINE_STRIP
1276 };
1277 #endif
1278
1279 int current;
1280 void * previous;
1281
1282 class OpenGLDisplayDriver : DisplayDriver
1283 {
1284    class_property(name) = "OpenGL";
1285
1286    bool LockSystem(DisplaySystem displaySystem)
1287    {
1288       OGLSystem oglSystem = displaySystem.driverData;
1289       if(useSingleGLContext) return true;
1290    #if defined(__WIN32__)
1291       wglMakeCurrent(oglSystem.hdc, oglSystem.glrc);
1292    #elif defined(__unix__) || defined(__APPLE__)
1293       //if(previous) return true;
1294       // printf("Making SYSTEM current\n");
1295 #if !defined(__ANDROID__)
1296       glXMakeCurrent(xGlobalDisplay, (GLXDrawable)oglSystem.glxDrawable, oglSystem.glContext);
1297 #endif
1298       //previous = oglSystem.glContext;
1299    #endif
1300       return true;
1301    }
1302
1303    void UnlockSystem(DisplaySystem displaySystem)
1304    {
1305       if(useSingleGLContext) return;
1306    #if defined(__WIN32__)
1307       wglMakeCurrent(null, null);
1308    #elif defined(__unix__) || defined(__APPLE__)
1309       // printf("Making NULL current\n");
1310       #if defined(__ANDROID__)
1311       #else
1312       glXMakeCurrent(xGlobalDisplay, None, null);
1313       #endif
1314       // previous = null;
1315    #endif
1316    }
1317
1318    bool Lock(Display display)
1319    {
1320       OGLDisplay oglDisplay = display.driverData;
1321       OGLSystem oglSystem = display.displaySystem.driverData;
1322
1323       if(useSingleGLContext) return true;
1324    #if defined(__WIN32__)
1325       wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
1326    #elif defined(__unix__) || defined(__APPLE__)
1327       // if(previous) glXMakeCurrent(xGlobalDisplay, None, null);
1328       // printf("   Making DISPLAY current\n");
1329       #if defined(__ANDROID__)
1330       #else
1331       glXMakeCurrent(xGlobalDisplay, (GLXDrawable)display.window, oglDisplay.glContext);
1332       #endif
1333    #endif
1334       return true;
1335    }
1336
1337    void Unlock(Display display)
1338    {
1339       if(useSingleGLContext) return;
1340       //printf("   Making NULL current\n");
1341       //glXMakeCurrent(xGlobalDisplay, None, null);
1342       // if(previous)
1343          LockSystem(display.displaySystem);
1344    }
1345
1346    void DestroyDisplay(Display display)
1347    {
1348       OGLDisplay oglDisplay = display.driverData;
1349
1350       if(oglDisplay)
1351       {
1352    #if defined(__WIN32__)
1353          wglMakeCurrent( null, null );
1354
1355          if(oglDisplay.glrc)
1356             wglDeleteContext(oglDisplay.glrc);
1357
1358          if(oglDisplay.hdc && oglDisplay.pBuffer)
1359             wglReleasePbufferDCARB(oglDisplay.pBuffer, oglDisplay.hdc);
1360
1361          if(oglDisplay.pBuffer)
1362             wglDestroyPbufferARB(oglDisplay.pBuffer);
1363
1364          if(oglDisplay.hdc)
1365             ReleaseDC(display.window, oglDisplay.hdc);
1366
1367          if(oglDisplay.memDC) DeleteDC(oglDisplay.memDC);
1368          if(oglDisplay.memBitmap) DeleteObject(oglDisplay.memBitmap);
1369
1370    #elif defined(__unix__) || defined(__APPLE__)
1371       #if defined(__ANDROID__)
1372       #else
1373          if(oglDisplay.shapePixmap)
1374             XFreePixmap(xGlobalDisplay, oglDisplay.shapePixmap);
1375          if(oglDisplay.pixmap)
1376             XFreePixmap(xGlobalDisplay, oglDisplay.pixmap);
1377          if(oglDisplay.image)
1378          {
1379             if(oglDisplay.shminfoShape.shmid != -1)
1380             {
1381                XShmDetach(xGlobalDisplay, &oglDisplay.shminfo);
1382                if(oglDisplay.shminfo.shmaddr != (void *)-1)
1383                   shmdt(oglDisplay.shminfo.shmaddr);
1384                shmctl(oglDisplay.shminfo.shmid, IPC_RMID, 0);
1385             }
1386          }
1387          if(oglDisplay.shapeImage)
1388          {
1389             if(oglDisplay.shminfoShape.shmid != -1)
1390             {
1391                XShmDetach(xGlobalDisplay, &oglDisplay.shminfoShape);
1392                if(oglDisplay.shminfoShape.shmaddr != (void *)-1)
1393                   shmdt(oglDisplay.shminfoShape.shmaddr);
1394                shmctl(oglDisplay.shminfoShape.shmid, IPC_RMID, 0);
1395             }
1396             XDestroyImage(oglDisplay.shapeImage);
1397             oglDisplay.shapeImage = None;
1398          }
1399
1400          glXMakeCurrent(xGlobalDisplay, None, null);
1401
1402          if(oglDisplay.glContext)
1403             glXDestroyContext(xGlobalDisplay, oglDisplay.glContext);
1404       #endif
1405    #endif
1406          delete oglDisplay.flippingBuffer;
1407          delete oglDisplay;
1408          display.driverData = null;
1409       }
1410    }
1411
1412    void ::CheckExtensions(OGLSystem oglSystem)
1413    {
1414       char * extensions = glGetString(GL_EXTENSIONS);
1415       if(extensions)
1416          oglSystem.pow2textures = strstr(extensions, "GL_ARB_texture_non_power_of_two") ? false : true;
1417       glGetIntegerv(GL_MAX_TEXTURE_SIZE, &oglSystem.maxTextureSize);
1418    }
1419
1420    bool CreateDisplaySystem(DisplaySystem displaySystem)
1421    {
1422       bool result = false;
1423       OGLSystem oglSystem = displaySystem.driverData = OGLSystem { };
1424
1425    #ifdef __WIN32__
1426       oglSystem.hwnd = CreateWindow("static", null, 0,0,0,0,0,null,null,null,null);
1427
1428       oglSystem.hdc = GetDC(oglSystem.hwnd);
1429       if(oglSystem.hdc)
1430       {
1431
1432          oglSystem.pfd.nSize = (short)sizeof(oglSystem.pfd);
1433          oglSystem.pfd.nVersion = 1;
1434          oglSystem.pfd.dwFlags = PFD_DRAW_TO_WINDOW /*PFD_DRAW_TO_BITMAP*/ | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
1435          oglSystem.pfd.iPixelType = PFD_TYPE_RGBA;
1436          oglSystem.pfd.cColorBits = 24;
1437          oglSystem.pfd.cAlphaBits = 8;
1438          oglSystem.pfd.cDepthBits = 24;
1439          oglSystem.pfd.iLayerType = PFD_MAIN_PLANE;
1440
1441          oglSystem.format = ChoosePixelFormat(oglSystem.hdc, &oglSystem.pfd);
1442          DescribePixelFormat(oglSystem.hdc, oglSystem.format, sizeof(oglSystem.pfd), &oglSystem.pfd);
1443
1444          if(oglSystem.pfd.cColorBits > 8)
1445          {
1446             SetPixelFormat(oglSystem.hdc, oglSystem.format, &oglSystem.pfd);
1447             oglSystem.glrc = wglCreateContext(oglSystem.hdc);
1448             if(oglSystem.glrc)
1449             {
1450                wglMakeCurrent(oglSystem.hdc, oglSystem.glrc);
1451
1452                  // Get Pointers To The GL Functions
1453                glActiveTextureARB = (void *) wglGetProcAddress("glActiveTextureARB");
1454                glMultiTexCoord2fARB = (void *) wglGetProcAddress("glMultiTexCoord2fARB");
1455                glClientActiveTextureARB = (void *) wglGetProcAddress("glClientActiveTextureARB");
1456                glLockArraysEXT = (void *) wglGetProcAddress("glLockArraysEXT" );
1457                glUnlockArraysEXT = (void *) wglGetProcAddress("glUnlockArraysEXT");
1458                  glGenBuffersARB = (void *) wglGetProcAddress("glGenBuffersARB");
1459                  glBindBufferARB = (void *) wglGetProcAddress("glBindBufferARB");
1460                  glBufferDataARB = (void *) wglGetProcAddress("glBufferDataARB");
1461                glMapBufferARB  = (void *) wglGetProcAddress("glMapBufferARB");
1462                glUnmapBufferARB  = (void *) wglGetProcAddress("glUnmapBufferARB");
1463                  glDeleteBuffersARB = (void *) wglGetProcAddress("glDeleteBuffersARB");
1464                glBlendFuncSeparate = (void *) wglGetProcAddress("glBlendFuncSeparate");
1465
1466                wglChoosePixelFormatARB = (void *) wglGetProcAddress("wglChoosePixelFormatARB");
1467                wglGetExtensionsStringARB = (void *)wglGetProcAddress("wglGetExtensionsStringARB");
1468                wglCreatePbufferARB = (void *)wglGetProcAddress("wglCreatePbufferARB");
1469                wglGetPbufferDCARB = (void *)wglGetProcAddress("wglGetPbufferDCARB");
1470                wglQueryPbufferARB = (void *)wglGetProcAddress("wglQueryPbufferARB");
1471                wglDestroyPbufferARB = (void *)wglGetProcAddress("wglDestroyPbufferARB");
1472                wglReleasePbufferDCARB = (void *)wglGetProcAddress("wglReleasePbufferDCARB");
1473                wglBindTexImageARB = (void *)wglGetProcAddress("wglBindTexImageARB");
1474                wglReleaseTexImageARB = (void *)wglGetProcAddress("wglReleaseTexImageARB");
1475
1476                wglSwapIntervalEXT = (void *)wglGetProcAddress("wglSwapIntervalEXT");
1477
1478                vboAvailable = glBindBufferARB != null;
1479
1480                // eSystem_LoggingMode(LOG_MSGBOX, null);
1481
1482                if(wglChoosePixelFormatARB)
1483                {
1484                     int pixelFormat;
1485                     int valid;
1486                     int numFormats;
1487                     float fAttributes[] = {0,0};
1488                     int iAttributes[] =
1489                   {
1490                      WGL_DRAW_TO_WINDOW_ARB,GL_TRUE,
1491                             WGL_SUPPORT_OPENGL_ARB,GL_TRUE,
1492                             WGL_ACCELERATION_ARB,WGL_FULL_ACCELERATION_ARB,
1493                             WGL_COLOR_BITS_ARB,24,
1494                             WGL_ALPHA_BITS_ARB,8,
1495                             WGL_DEPTH_BITS_ARB,16,
1496                             WGL_STENCIL_BITS_ARB,0,
1497                             WGL_DOUBLE_BUFFER_ARB,GL_TRUE,
1498                             WGL_SAMPLE_BUFFERS_ARB,GL_TRUE,
1499                             WGL_SAMPLES_ARB, 4,                                         // Check For 4x Multisampling
1500                             0,0
1501                   };
1502
1503                   //Log("Found wglChoosePixelFormatARB\n");
1504
1505                     valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1506                     if(!valid || !numFormats)
1507                     {
1508                      //Log("Can't find 4x multi sampling\n");
1509                        iAttributes[19] = 2;
1510                        valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1511                      if(!valid || !numFormats)
1512                      {
1513                         // Log("Can't find 2x multi sampling\n");
1514                         iAttributes[16] = 0;
1515                         iAttributes[17] = 0;
1516                         valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1517                      }
1518                     }
1519                   if(valid && numFormats)
1520                   {
1521                      oglSystem.format = pixelFormat;
1522                      wglMakeCurrent(null, null);
1523                      wglDeleteContext(oglSystem.glrc);
1524
1525                      // *** DescribePixelFormat does not support WGL pixel formats! ***
1526                      //DescribePixelFormat(oglSystem.hdc, oglSystem.format, sizeof(oglSystem.pfd), &oglSystem.pfd);
1527                      SetPixelFormat(oglSystem.hdc, oglSystem.format, &oglSystem.pfd);
1528                      //Log("Successfully set pixel format\n");
1529
1530                      oglSystem.glrc = wglCreateContext(oglSystem.hdc);
1531                      wglMakeCurrent(oglSystem.hdc, oglSystem.glrc);
1532                   }
1533                }
1534                /*else
1535                   eSystem_Logf("Can't find wglChoosePixelFormatARB\n");*/
1536
1537                result = true;
1538
1539                CheckExtensions(oglSystem);
1540
1541                wglMakeCurrent(null, null);
1542
1543                //eSystem_DumpErrors(true);
1544             }
1545          }
1546       }
1547    #elif defined(__unix__) || defined(__APPLE__)
1548       vboAvailable = true;
1549       #if defined(__ANDROID__)
1550          egl_init_display(guiApp.desktop.windowHandle);
1551          CheckExtensions(oglSystem);
1552          result = true;
1553       #else
1554       {
1555          X11Window root = RootWindow( xGlobalDisplay, DefaultScreen( xGlobalDisplay ) );
1556          XSetWindowAttributes attr;
1557          unsigned long mask;
1558
1559          int attrList[] =
1560          {
1561       #ifndef ECERE_MINIGLX
1562             GLX_USE_GL, GLX_DEPTH_SIZE, 1,
1563       #endif
1564             GLX_RGBA,
1565             GLX_RED_SIZE, 1, GLX_GREEN_SIZE, 1, GLX_BLUE_SIZE, 1,
1566             GLX_DOUBLEBUFFER,
1567             None
1568          };
1569          oglSystem.visualInfo = glXChooseVisual( xGlobalDisplay,  DefaultScreen( xGlobalDisplay ), attrList );
1570          attr.background_pixel = 0;
1571          attr.border_pixel = 0;
1572          attr.colormap = XCreateColormap( xGlobalDisplay, root, oglSystem.visualInfo->visual, AllocNone);
1573          attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
1574          mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
1575
1576          oglSystem.glxDrawable = XCreateWindow( xGlobalDisplay, root, 0, 0, 1, 1, 0, oglSystem.visualInfo->depth, InputOutput,
1577             oglSystem.visualInfo->visual, mask, &attr );
1578       }
1579       if(oglSystem.visualInfo)
1580       {
1581          oglSystem.glContext = glXCreateContext(xGlobalDisplay, oglSystem.visualInfo, null, True);
1582          if(oglSystem.glContext)
1583          {
1584             glXMakeCurrent(xGlobalDisplay, oglSystem.glxDrawable, oglSystem.glContext);
1585             // Setup Extensions
1586             CheckExtensions(oglSystem);
1587             glXMakeCurrent(xGlobalDisplay, None, null);
1588             result = true;
1589          }
1590       }
1591       #endif
1592    #endif
1593
1594       displaySystem.flags.alpha = true;
1595       displaySystem.flags.flipping = true;
1596       displaySystem.pixelFormat = pixelFormat888;
1597       return result;
1598    }
1599
1600    void DestroyDisplaySystem(DisplaySystem displaySystem)
1601    {
1602       OGLSystem oglSystem = displaySystem.driverData;
1603
1604    #if defined(__WIN32__)
1605       wglMakeCurrent( null, null );
1606
1607       if(oglSystem.glrc)
1608          wglDeleteContext(oglSystem.glrc);
1609
1610       if(oglSystem.hdc)
1611          ReleaseDC(oglSystem.hwnd, oglSystem.hdc);
1612       DestroyWindow(oglSystem.hwnd);
1613
1614    #elif defined(__unix__) || defined(__APPLE__)
1615       #if defined(__ANDROID__)
1616          egl_term_display();
1617       #else
1618       if(oglSystem.visualInfo)
1619       {
1620    #ifdef   ECERE_MINIGLX
1621          __miniglx_XFree(oglSystem.visualInfo);
1622    #else
1623          XFree(oglSystem.visualInfo);
1624    #endif
1625       }
1626
1627       if(oglSystem.glxDrawable)
1628       {
1629          XDestroyWindow(xGlobalDisplay, oglSystem.glxDrawable);
1630          oglSystem.glxDrawable = 0;
1631       }
1632       #endif
1633    #endif
1634       delete oglSystem;
1635    }
1636
1637    bool CreateDisplay(Display display)
1638    {
1639       bool result = false;
1640       OGLDisplay oglDisplay = display.driverData;
1641       OGLSystem oglSystem = display.displaySystem.driverData;
1642       if(!oglDisplay)
1643          oglDisplay = display.driverData = OGLDisplay { };
1644       //printf("Inside CreateDisplay\n");
1645
1646 #if defined(__WIN32__) || defined(USEPBUFFER)
1647       if(!display.alphaBlend)
1648 #endif
1649       {
1650    #if defined(__WIN32__)
1651          oglDisplay.hdc = GetDC(display.window);
1652          SetPixelFormat(oglDisplay.hdc, oglSystem.format, &oglSystem.pfd);
1653          if((oglDisplay.glrc = wglCreateContext(oglDisplay.hdc)))
1654          {
1655             wglShareLists(oglSystem.glrc, oglDisplay.glrc);
1656             wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
1657             result = true;
1658          }
1659          else
1660             ReleaseDC(display.window, oglDisplay.hdc);
1661    #elif defined(__unix__) || defined(__APPLE__)
1662       #if defined(__ANDROID__)
1663       #else
1664          XVisualInfo * visualInfo = ((XWindowData)display.windowDriverData).visual;
1665          /*
1666 #if defined(__APPLE__)
1667          XVisualInfo template = { 0 };
1668          XWindowAttributes winAttr;
1669          int n;
1670          XGetWindowAttributes(xGlobalDisplay, (X11Window)display.window, &winAttr);
1671          template.visualid = XVisualIDFromVisual(winAttr.visual);
1672          visualInfo = XGetVisualInfo(xGlobalDisplay, VisualIDMask, &template, &n);
1673 #ifdef _DEBUG
1674          printf("XGetVisualInfo visual ID = %d\n", template.visualid);
1675          printf("visualInfo visual ID = %d\n", visualInfo->visualid);
1676          printf("oglSystem.visualInfo visual ID = %d\n", oglSystem.visualInfo->visualid);
1677          printf("((XWindowData)display.windowDriverData).visual visual ID = %d\n", ((XWindowData)display.windowDriverData).visual->visualid);
1678 #endif
1679          // visualInfo = oglSystem.visualInfo;
1680 //#endif
1681          */
1682          if(visualInfo)
1683          {
1684             //printf("visualInfo is not null\n");
1685             // printf("Creating Display Context, sharing with %x!\n", oglSystem.glContext);
1686             oglDisplay.glContext = glXCreateContext(xGlobalDisplay, visualInfo, oglSystem.glContext, True);
1687             //XFree(visualInfo);
1688          }
1689
1690          // oglDisplay.glContext = glXCreateContext(xGlobalDisplay, oglSystem.visualInfo, oglSystem.glContext, True);
1691          if(oglDisplay.glContext)
1692          {
1693             //printf("CreateDisplay Got a Context\n");
1694             glXMakeCurrent(xGlobalDisplay, (GLXDrawable)display.window, oglDisplay.glContext);
1695             result = true;
1696          }
1697       #endif
1698    #endif
1699       }
1700 #if defined(__WIN32__) || defined(USEPBUFFER)
1701       else
1702          result = true;
1703 #endif
1704       if(result)
1705       {
1706 #if !defined(__OLDX__)
1707          if(glBlendFuncSeparate)
1708             glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
1709          else
1710 #endif
1711             glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1712          glEnable(GL_BLEND);
1713
1714          glMatrixMode(GL_MODELVIEW);
1715          glScaled(1.0, 1.0, -1.0);
1716          // glTranslatef(0.375f, 0.375f, 0.0f);
1717          // glTranslatef(-0.625f, -0.625f, 0.0f);
1718          glMatrixMode(GL_PROJECTION);
1719          glShadeModel(GL_FLAT);
1720
1721          // glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, true);
1722          glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
1723          glFogi(GL_FOG_MODE, GL_EXP);
1724          glFogf(GL_FOG_DENSITY, 0);
1725          glEnable(GL_NORMALIZE);
1726          glDepthFunc(GL_LESS);
1727          glClearDepth(1.0);
1728          glDisable(GL_MULTISAMPLE_ARB);
1729       }
1730 #if !defined(ECERE_NO3D) && !defined(ECERE_VANILLA)
1731       display.ambient = Color { 50,50,50 };
1732 #endif
1733
1734       if(!useSingleGLContext)
1735       {
1736    #if defined(__WIN32__)
1737          wglMakeCurrent(null, null);
1738    #elif defined(__unix__) || defined(__APPLE__)
1739       #if defined(__ANDROID__)
1740          result = true;
1741       #else
1742          glXMakeCurrent(xGlobalDisplay, None, null);
1743       #endif
1744    #endif
1745       }
1746
1747       return result;
1748    }
1749
1750    bool DisplaySize(Display display, int width, int height)
1751    {
1752       OGLDisplay oglDisplay = display.driverData;
1753       OGLSystem oglSystem = display.displaySystem.driverData;
1754
1755       bool result = false;
1756
1757       //printf("Inside DisplaySize\n");
1758 #if defined(__WIN32__) || defined(USEPBUFFER)
1759       if(display.alphaBlend)
1760       {
1761 #if defined(__WIN32__)
1762          const int attributes[]=
1763          {
1764             /*WGL_TEXTURE_FORMAT_ARB, WGL_TEXTURE_RGBA_ARB,
1765             WGL_TEXTURE_TARGET_ARB, WGL_TEXTURE_2D_ARB, */0
1766          };
1767          int pixelFormat = 0;
1768          if(wglChoosePixelFormatARB)
1769          {
1770             int valid;
1771             int numFormats;
1772             float fAttributes[] = {0,0};
1773             int iAttributes[] =
1774             {
1775                //WGL_DRAW_TO_BITMAP_ARB, GL_TRUE,
1776                WGL_DRAW_TO_PBUFFER_ARB,GL_TRUE,
1777                     WGL_SUPPORT_OPENGL_ARB,GL_TRUE,
1778                     WGL_ACCELERATION_ARB,WGL_FULL_ACCELERATION_ARB,
1779                     WGL_COLOR_BITS_ARB,24,
1780                     WGL_ALPHA_BITS_ARB,8,
1781                     WGL_DEPTH_BITS_ARB,16,
1782                     WGL_STENCIL_BITS_ARB,0,
1783                     WGL_DOUBLE_BUFFER_ARB,GL_FALSE,
1784                     WGL_SAMPLE_BUFFERS_ARB,GL_TRUE,
1785                     WGL_SAMPLES_ARB, 4,                                         // Check For 4x Multisampling
1786                     0,0
1787             };
1788
1789             //Log("Found wglChoosePixelFormatARB\n");
1790
1791             valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1792             if(!valid || !numFormats)
1793             {
1794                //Log("Can't find 4x multi sampling\n");
1795                iAttributes[19] = 2;
1796                valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1797                if(!valid || !numFormats)
1798                {
1799                   // Log("Can't find 2x multi sampling\n");
1800                   iAttributes[16] = 0;
1801                   iAttributes[17] = 0;
1802                   valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1803                   if(!valid || !numFormats)
1804                   {
1805                      int iAttributes[] =
1806                      {
1807                         WGL_DRAW_TO_PBUFFER_ARB,GL_TRUE,
1808                         //WGL_DRAW_TO_BITMAP_ARB,GL_TRUE,
1809                         WGL_SUPPORT_OPENGL_ARB,GL_TRUE,
1810                         WGL_COLOR_BITS_ARB,24,
1811                         WGL_ALPHA_BITS_ARB,8,
1812                         WGL_DEPTH_BITS_ARB,16,
1813                         0,0
1814                      };
1815                      valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1816                   }
1817                }
1818             }
1819             if(valid && numFormats)
1820             {
1821                wglMakeCurrent(null, null);
1822             }
1823          }
1824
1825          wglMakeCurrent( null, null );
1826          wglMakeCurrent( oglDisplay.hdc, oglDisplay.glrc );
1827          if(oglDisplay.hdc && oglDisplay.pBuffer)
1828             wglReleasePbufferDCARB(oglDisplay.pBuffer, oglDisplay.hdc);
1829
1830          wglDestroyPbufferARB(oglDisplay.pBuffer);
1831
1832          if(!useSingleGLContext)
1833             wglMakeCurrent( null, null );
1834
1835          if(oglDisplay.glrc)
1836             wglDeleteContext(oglDisplay.glrc);
1837
1838          oglDisplay.pBuffer = wglCreatePbufferARB(oglSystem.hdc, pixelFormat, width, height, attributes);
1839          oglDisplay.hdc = wglGetPbufferDCARB(oglDisplay.pBuffer);
1840          if((oglDisplay.glrc = wglCreateContext(oglDisplay.hdc)))
1841          {
1842             BITMAPINFO * info;
1843             HDC hdc = GetDC(display.window);
1844
1845             wglShareLists(oglSystem.glrc, oglDisplay.glrc);
1846             wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
1847
1848             //wglQueryPbufferARB(pBuffer, WGL_PBUFFER_WIDTH_ARB, &width);
1849             //wglQueryPbufferARB(pBuffer, WGL_PBUFFER_HEIGHT_ARB, &height);
1850
1851             // glDeleteBuffersARB(2, oglDisplay.imageBuffers);
1852
1853             if((info = (BITMAPINFO *)new0 byte[sizeof(BITMAPINFOHEADER)+sizeof(RGBQUAD)*256]))
1854             {
1855                HBITMAP newBitmap;
1856
1857                if(oglDisplay.memDC) DeleteDC(oglDisplay.memDC);
1858                oglDisplay.memDC = CreateCompatibleDC(hdc);
1859                SetMapMode(oglDisplay.memDC, MM_TEXT);
1860                info->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
1861                info->bmiHeader.biPlanes = 1;
1862                info->bmiHeader.biCompression = BI_RGB;
1863                info->bmiHeader.biBitCount = 32; //(uint16)GetDeviceCaps(hdc, BITSPIXEL);
1864                info->bmiHeader.biWidth = width;
1865                info->bmiHeader.biHeight = height;
1866                newBitmap = CreateDIBSection(hdc, info, DIB_RGB_COLORS, &oglDisplay.picture, null, 0);
1867                if(newBitmap)
1868                {
1869                   SelectObject(oglDisplay.memDC, newBitmap);
1870                   if(oglDisplay.memBitmap) DeleteObject(oglDisplay.memBitmap);
1871                   /*
1872                   {
1873                      PIXELFORMATDESCRIPTOR pfd = { 0 };
1874                      pfd.nSize = (short)sizeof(pfd);
1875                      pfd.nVersion = 1;
1876                      pfd.dwFlags = PFD_DRAW_TO_BITMAP | PFD_SUPPORT_OPENGL;
1877                      pfd.iPixelType = PFD_TYPE_RGBA;
1878                      pfd.cColorBits = 32;
1879                      //pfd.cAlphaBits = 8;
1880                      pfd.cDepthBits = 24;
1881                      pfd.iLayerType = PFD_MAIN_PLANE;
1882
1883                      oglDisplay.hdc = oglDisplay.memDC;
1884
1885                      pixelFormat = ChoosePixelFormat(oglSystem.hdc, &pfd);
1886                      DescribePixelFormat(oglDisplay.hdc, pixelFormat, sizeof(pfd), &pfd);
1887                      SetPixelFormat(oglDisplay.hdc, pixelFormat, &pfd);
1888
1889                      oglDisplay.glrc = wglCreateContext(oglDisplay.hdc);
1890                      wglShareLists(oglSystem.glrc, oglDisplay.glrc);
1891                      wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
1892                   }
1893                   */
1894                   /*
1895                   {
1896                      const int imageSize = width * height * 4;
1897
1898                      glGenBuffersARB(2, oglDisplay.imageBuffers);
1899
1900                      glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
1901                      glBufferDataARB(GL_PIXEL_PACK_BUFFER_ARB, imageSize, null, GL_STREAM_READ);
1902                      // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
1903                      // glBufferDataARB(GL_PIXEL_PACK_BUFFER_ARB, imageSize / 2, null, GL_STREAM_READ);
1904                   }
1905                   */
1906                   oglDisplay.memBitmap = newBitmap;
1907                   oglDisplay.stride = width;
1908
1909                   result = true;
1910                }
1911                delete info;
1912             }
1913             ReleaseDC(display.window, hdc);
1914          }
1915 #elif defined(__unix__) || defined(__APPLE__)
1916       #if defined(__ANDROID__)
1917          result = true;
1918       #else
1919         int attrib[] =
1920         {
1921                 GLX_DOUBLEBUFFER,  True,
1922             GLX_DEPTH_SIZE,    1,
1923                 GLX_RED_SIZE,      8,
1924                 GLX_GREEN_SIZE,    8,
1925                 GLX_BLUE_SIZE,     8,
1926                 GLX_ALPHA_SIZE,    8,
1927                 GLX_STENCIL_SIZE,  1,
1928                 //GLX_DEPTH_SIZE,    24,
1929                 GLX_RENDER_TYPE,   GLX_RGBA_BIT,
1930                 GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT | GLX_WINDOW_BIT,
1931                 None
1932         };
1933
1934         int PBattrib[] =
1935         {
1936                 GLX_PBUFFER_WIDTH,   width,
1937                 GLX_PBUFFER_HEIGHT,  height,
1938                 GLX_LARGEST_PBUFFER, False,
1939             None
1940         };
1941
1942         // choose a pixel format that meets our minimum requirements
1943         int count = 0;
1944
1945         GLXFBConfig *config = glXChooseFBConfig(xGlobalDisplay, DefaultScreen(xGlobalDisplay), attrib, &count);
1946          if(config)
1947          {
1948             if(oglDisplay.pixmap)
1949             {
1950                XFreePixmap(xGlobalDisplay, oglDisplay.pixmap);
1951                oglDisplay.pixmap = None;
1952             }
1953             if(oglDisplay.shapePixmap)
1954             {
1955                XFreePixmap(xGlobalDisplay, oglDisplay.shapePixmap);
1956                oglDisplay.shapePixmap = None;
1957             }
1958
1959             // Free Shared Memory Pixmap
1960             if(oglDisplay.image)
1961             {
1962                if(oglDisplay.shminfoShape.shmid != -1)
1963                {
1964                   XShmDetach(xGlobalDisplay, &oglDisplay.shminfo);
1965                   if(oglDisplay.shminfo.shmaddr != (void *)-1)
1966                      shmdt(oglDisplay.shminfo.shmaddr);
1967                   shmctl(oglDisplay.shminfo.shmid, IPC_RMID, 0);
1968                }
1969                XDestroyImage(oglDisplay.image);
1970                oglDisplay.image = None;
1971             }
1972             if(oglDisplay.shapeImage)
1973             {
1974                if(oglDisplay.shminfoShape.shmid != -1)
1975                {
1976                   XShmDetach(xGlobalDisplay, &oglDisplay.shminfoShape);
1977                   if(oglDisplay.shminfoShape.shmaddr != (void *)-1)
1978                      shmdt(oglDisplay.shminfoShape.shmaddr);
1979                   shmctl(oglDisplay.shminfoShape.shmid, IPC_RMID, 0);
1980                }
1981                XDestroyImage(oglDisplay.shapeImage);
1982                oglDisplay.shapeImage = None;
1983             }
1984
1985             if(oglDisplay.windowPicture)
1986                XRenderFreePicture(xGlobalDisplay, oglDisplay.windowPicture);
1987             if(oglDisplay.pixmapPicture)
1988                XRenderFreePicture(xGlobalDisplay, oglDisplay.pixmapPicture);
1989
1990             if(oglDisplay.pixmap)
1991                XFreePixmap(xGlobalDisplay, oglDisplay.pixmap);
1992
1993             if(oglDisplay.glContext)
1994                   glXDestroyContext(xGlobalDisplay, oglDisplay.glContext);
1995             if(oglDisplay.pBuffer)
1996                glXDestroyPbuffer(xGlobalDisplay, oglDisplay.pBuffer);
1997
1998                 oglDisplay.pBuffer = glXCreatePbuffer(xGlobalDisplay, config[0], PBattrib);
1999             if(oglDisplay.pBuffer)
2000             {
2001                    oglDisplay.glContext = glXCreateNewContext(xGlobalDisplay, config[0], GLX_RGBA_TYPE, oglSystem.glContext, True);
2002                if(oglDisplay.glContext)
2003                {
2004                   glXMakeCurrent(xGlobalDisplay, None, null);
2005                   glXMakeCurrent(xGlobalDisplay, (GLXDrawable)display.window, oglDisplay.glContext);
2006
2007                   // Initialize Shared Memory Pixmap
2008                   oglDisplay.image = XShmCreateImage(xGlobalDisplay, DefaultVisual(xGlobalDisplay, DefaultScreen(xGlobalDisplay)), 32,
2009                      ZPixmap, null, &oglDisplay.shminfo, width, height);
2010                   if(oglDisplay.image)
2011                   {
2012                      oglDisplay.shminfo.shmid = shmget(IPC_PRIVATE,
2013                         oglDisplay.image->bytes_per_line * oglDisplay.image->height, IPC_CREAT|0777);
2014                      if(oglDisplay.shminfo.shmid != -1)
2015                      {
2016                         oglDisplay.shminfo.shmaddr = shmat(oglDisplay.shminfo.shmid, 0, 0);
2017                         if(oglDisplay.shminfo.shmaddr != (void *)-1)
2018                         {
2019                            oglDisplay.shminfo.readOnly = False;
2020                            if(XShmAttach(xGlobalDisplay, &oglDisplay.shminfo))
2021                            {
2022                               oglDisplay.pixmap = XShmCreatePixmap(xGlobalDisplay, (X11Window)display.window, oglDisplay.shminfo.shmaddr,
2023                                  &oglDisplay.shminfo, width, height, 32);
2024
2025                               // Initialize Shared Memory Shape Pixmap
2026                               oglDisplay.shapeImage = XShmCreateImage(xGlobalDisplay, DefaultVisual(xGlobalDisplay, DefaultScreen(xGlobalDisplay)), 1,
2027                                  ZPixmap, null, &oglDisplay.shminfoShape, width, height);
2028                               if(oglDisplay.shapeImage)
2029                               {
2030                                  oglDisplay.shminfoShape.shmid = shmget(IPC_PRIVATE,
2031                                     oglDisplay.shapeImage->bytes_per_line * oglDisplay.shapeImage->height, IPC_CREAT|0777);
2032                                  if(oglDisplay.shminfoShape.shmid != -1)
2033                                  {
2034                                     oglDisplay.shminfoShape.shmaddr = shmat(oglDisplay.shminfoShape.shmid, 0, 0);
2035                                     if(oglDisplay.shminfoShape.shmaddr != (void *)-1)
2036                                     {
2037                                        oglDisplay.shminfoShape.readOnly = False;
2038                                        if(XShmAttach(xGlobalDisplay, &oglDisplay.shminfoShape))
2039                                        {
2040                                           oglDisplay.shapePixmap = XShmCreatePixmap(xGlobalDisplay, (X11Window)display.window, oglDisplay.shminfoShape.shmaddr,
2041                                              &oglDisplay.shminfoShape, width, height, 1);
2042                                           //oglDisplay.shapePixmap = XCreatePixmap(xGlobalDisplay, (X11Window)display.window, width, height, 1);
2043
2044                                           {
2045                                              XRenderPictureAttributes attributes = { 0 };
2046                                              XRenderPictFormat * format = XRenderFindStandardFormat(xGlobalDisplay, /*PictStandardRGB24*/ PictStandardARGB32);
2047                                              #if !defined(__APPLE__) && !defined(__OLDX__)
2048                                              attributes.repeat = RepeatNormal;
2049                                              #else
2050                                              attributes.repeat = 1;
2051                                              #endif
2052                                              oglDisplay.pixmapPicture = XRenderCreatePicture(xGlobalDisplay, oglDisplay.pixmap, format, CPRepeat, &attributes);
2053                                              oglDisplay.windowPicture = XRenderCreatePicture(xGlobalDisplay, (X11Window)display.window, format, 0, &attributes);
2054                                              oglDisplay.shapePicture = XRenderCreatePicture(xGlobalDisplay, oglDisplay.shapePixmap,
2055                                                 XRenderFindStandardFormat(xGlobalDisplay, PictStandardA1), 0, &attributes);
2056                                           }
2057
2058                                           oglDisplay.picture = oglDisplay.shminfo.shmaddr;
2059                                           oglDisplay.stride = oglDisplay.image->bytes_per_line / 4;
2060
2061                                           result = true;
2062                                        }
2063                                     }
2064                                  }
2065                               }
2066                            }
2067                         }
2068                      }
2069                   }
2070                }
2071             }
2072             XFree(config);
2073          }
2074      #endif
2075 #endif
2076          CreateDisplay(display);
2077 #if defined(__WIN32__)
2078          wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
2079 #elif defined(__unix__) || defined(__APPLE__)
2080       #if defined(__ANDROID__)
2081          width = eglWidth;
2082          height = eglHeight;
2083       #else
2084          glXMakeCurrent(xGlobalDisplay, (GLXDrawable)display.window, oglDisplay.glContext);
2085       #endif
2086 #endif
2087       }
2088       else
2089 #endif
2090          result = true;
2091       if(!result && display.alphaBlend)
2092       {
2093          printf("Alpha blending windows not supported on this display\n");
2094       }
2095       if(!result)
2096          return false;
2097
2098       result = false;
2099
2100       glViewport(0,0,width,height);
2101       glLoadIdentity();
2102       glOrtho(0,width,height,0,0.0,1.0);
2103       displayWidth = display.width = width;
2104       displayHeight = display.height = height;
2105
2106       if(!oglDisplay.flippingBuffer || oglDisplay.flipBufW < width || oglDisplay.flipBufH < height)
2107       {
2108          oglDisplay.flipBufW = width;
2109          oglDisplay.flipBufH = height;
2110          oglDisplay.flippingBuffer = renew oglDisplay.flippingBuffer ColorAlpha [width * height];
2111       }
2112       if(oglDisplay.flippingBuffer || !width || !height)
2113          result = true;
2114
2115       return result;
2116    }
2117
2118    void DisplayPosition(Display display, int x, int y)
2119    {
2120       OGLDisplay oglDisplay = display.driverData;
2121
2122       oglDisplay.x = x;
2123       oglDisplay.y = y;
2124    }
2125
2126    void SetPalette(Display display, ColorAlpha * palette, bool colorMatch)
2127    {
2128    }
2129
2130    void RestorePalette(Display display)
2131    {
2132    }
2133
2134    void StartUpdate(Display display)
2135    {
2136    }
2137
2138    void EndUpdate(Display display)
2139    {
2140    }
2141
2142    void Scroll(Display display, Box scroll, int x, int y, Extent dirty)
2143    {
2144    }
2145
2146    void Update(Display display, Box updateBox)
2147    {
2148       OGLDisplay oglDisplay = display.driverData;
2149       //Logf("DisplayScreen\n");
2150
2151       glFlush();
2152       glFinish();
2153 #if defined(__WIN32__) || defined(USEPBUFFER)
2154       if(display.alphaBlend)
2155       {
2156          glPixelStorei(GL_PACK_ALIGNMENT, 4);
2157          glPixelStorei(GL_PACK_ROW_LENGTH, oglDisplay.stride);
2158          glPixelStorei(GL_PACK_SKIP_ROWS, 0);
2159          glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
2160          glReadPixels(0,0,display.width,display.height,GL_BGRA_EXT,GL_UNSIGNED_BYTE, oglDisplay.picture);
2161
2162          {
2163 #if defined(__WIN32__)
2164             HDC hdc = GetDC(0);
2165             POINT point = { oglDisplay.x, oglDisplay.y};
2166             POINT srcPoint = { 0, 0 };
2167             BLENDFUNCTION blend = { 0 };
2168             SIZE size;
2169             size.cx = display.width;
2170             size.cy = display.height;
2171             blend.BlendOp = AC_SRC_OVER;
2172             blend.BlendFlags = 0;
2173             blend.SourceConstantAlpha = 255;
2174             blend.AlphaFormat = AC_SRC_ALPHA;
2175
2176             /*
2177             // Process partial images.  Mapping the buffer waits for
2178             // outstanding DMA transfers into the buffer to finish.
2179             glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2180             oglDisplay.pboMemory1 = (byte *)glMapBufferARB(GL_PIXEL_PACK_BUFFER_ARB, GL_READ_ONLY);
2181
2182             // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2183             // oglDisplay.pboMemory2 = (byte *)glMapBufferARB(GL_PIXEL_PACK_BUFFER_ARB,GL_READ_ONLY);
2184
2185
2186             memcpy(oglDisplay.picture, oglDisplay.pboMemory1, display.width * display.height * 4);
2187             //memcpy(oglDisplay.picture + display.width * display.height * 4 / 2, oglDisplay.pboMemory2, display.width * display.height * 4/ 2);
2188             */
2189
2190             UpdateLayeredWindow(display.window, hdc, &point, &size, oglDisplay.memDC, &srcPoint, 0, &blend, ULW_ALPHA);
2191             /*
2192
2193             // Unmap the image buffers
2194             glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2195             glUnmapBufferARB(GL_PIXEL_PACK_BUFFER_ARB);
2196
2197             // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2198             // glUnmapBufferARB(GL_PIXEL_PACK_BUFFER_ARB);
2199
2200             // Bind two different buffer objects and start the glReadPixels
2201             // asynchronously. Each call will return directly after
2202             // starting the DMA transfer.
2203             glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2204             glReadPixels(0, 0, display.width, display.height, GL_BGRA, GL_UNSIGNED_BYTE, 0);
2205
2206             // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2207             // glReadPixels(0, display.height/2, display.width, display.height/2, GL_BGRA, GL_UNSIGNED_BYTE, 0);
2208             */
2209
2210             ReleaseDC(0, hdc);
2211 #elif defined(__unix__) || defined(__APPLE__)
2212       #if defined(__ANDROID__)
2213       #else
2214             XTransform transform =
2215             {
2216                {
2217                   { (int)(1.0f * (1<<16)), (int)(0.0f * (1<<16)),  (int)(0 * (1 << 16)) },
2218                   { (int)(0.0f),           (int)(-1.0f * (1<<16)), (int)(0 * (1<<16)) },
2219                   { (int)(0.0f * (1<<16)), (int)(0.0f * (1<<16)),  (int)(1.0f * (1<<16)) }
2220                }
2221             };
2222             XRenderSetPictureTransform(xGlobalDisplay, oglDisplay.pixmapPicture, &transform);
2223             XRenderComposite(xGlobalDisplay, PictOpSrc, oglDisplay.pixmapPicture, None, oglDisplay.shapePicture, 0, 0, 0, 0, 0, 0, display.width, display.height);
2224             XRenderComposite(xGlobalDisplay, PictOpSrc, oglDisplay.pixmapPicture, None, oglDisplay.windowPicture, 0, 0, 0, 0, 0, 0, display.width, display.height);
2225             #if !defined(__APPLE__) && !defined(__OLDX__)
2226             XShapeCombineMask(xGlobalDisplay, (X11Window)display.window, ShapeInput, 0, 0, oglDisplay.shapePixmap, ShapeSet);
2227             #else
2228             XShapeCombineMask(xGlobalDisplay, display.window, 2, 0, 0, oglDisplay.shapePixmap, ShapeSet);
2229             #endif
2230             XFlush(xGlobalDisplay);
2231      #endif
2232 #endif
2233          }
2234       }
2235       else
2236 #endif
2237       {
2238 #if defined(__WIN32__)
2239          //wglSwapLayerBuffers(oglDisplay.hdc,WGL_SWAP_MAIN_PLANE);
2240          SwapBuffers(oglDisplay.hdc);
2241 #elif defined(__unix__) || defined(__APPLE__)
2242       #if defined(__ANDROID__)
2243          eglSwapBuffers(eglDisplay, eglSurface);
2244       #else
2245          glXSwapBuffers(xGlobalDisplay, (GLXDrawable)display.window);
2246       #endif
2247 #endif
2248       }
2249       //Logf("Out of DisplayScreen\n");
2250    }
2251
2252    void FreeBitmap(DisplaySystem displaySystem, Bitmap bitmap)
2253    {
2254       glDeleteTextures(1, (int *)&bitmap.driverData);
2255       bitmap.driverData = 0;
2256
2257       bitmap.driver = ((subclass(DisplayDriver))class(LFBDisplayDriver));
2258    }
2259
2260    bool AllocateBitmap(DisplaySystem displaySystem, Bitmap bitmap, int width, int height, int stride, PixelFormat format, bool allocatePalette)
2261    {
2262       OGLSystem oglSystem = displaySystem.driverData;
2263       bool result = false;
2264       Bitmap mipMap { };
2265       int glBitmap = -1;
2266
2267       uint w = width, h = height;
2268       if(oglSystem.pow2textures)
2269       {
2270          w = pow2i(w);
2271          h = pow2i(h);
2272       }
2273       w = Min(w, oglSystem.maxTextureSize);
2274       h = Min(h, oglSystem.maxTextureSize);
2275
2276       glGenTextures(1, &glBitmap);
2277       glBindTexture(GL_TEXTURE_2D, glBitmap);
2278
2279       glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
2280
2281       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
2282       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
2283
2284       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
2285       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
2286
2287       glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
2288
2289       mipMap.Allocate(null, w, h, w, pixelFormatRGBA, false);
2290
2291       // glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2292       glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2293
2294       delete mipMap;
2295
2296       bitmap.driverData = (void *)glBitmap;
2297       bitmap.driver = displaySystem.driver;
2298       bitmap.width = w;
2299       bitmap.height = h;
2300
2301       result = true;
2302       return result;
2303    }
2304
2305    bool MakeDDBitmap(DisplaySystem displaySystem, Bitmap bitmap, bool mipMaps)
2306    {
2307       bool result = false;
2308       OGLSystem oglSystem = displaySystem.driverData;
2309
2310       // Pre process the bitmap... First make it 32 bit
2311       if(/*bitmap.pixelFormat == pixelFormatRGBA || */bitmap.Convert(null, pixelFormat888, null))
2312       {
2313          int c, level;
2314          uint w = bitmap.width, h = bitmap.height;
2315          int glBitmap = -1;
2316          if(oglSystem.pow2textures)
2317          {
2318             w = pow2i(w);
2319             h = pow2i(h);
2320          }
2321          w = Min(w, oglSystem.maxTextureSize);
2322          h = Min(h, oglSystem.maxTextureSize);
2323
2324          if(mipMaps)
2325          {
2326             while(w * 2 < h) w *= 2;
2327             while(h * 2 < w) h *= 2;
2328          }
2329
2330          // Switch ARGB to RGBA
2331          //if(bitmap.format != pixelFormatRGBA)
2332          {
2333             for(c=0; c<bitmap.size; c++)
2334             {
2335                // ((ColorRGBA *)bitmap.picture)[c] = ((ColorAlpha *)bitmap.picture)[c];
2336                // TODO:
2337                ColorAlpha color = ((ColorAlpha *)bitmap.picture)[c];
2338                ((ColorRGBA *)bitmap.picture)[c] = ColorRGBA { color.color.r, color.color.g, color.color.b, color.a };
2339             }
2340          }
2341          bitmap.pixelFormat = pixelFormat888;
2342
2343          glGetError();
2344          glGenTextures(1, &glBitmap);
2345          if(glBitmap == -1)
2346          {
2347             int error = glGetError();
2348             return false;
2349             //Print("");
2350          }
2351
2352          glBindTexture(GL_TEXTURE_2D, glBitmap);
2353          glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
2354
2355          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
2356          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, mipMaps ? GL_LINEAR_MIPMAP_LINEAR : GL_LINEAR);
2357          //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
2358
2359          //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
2360          //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
2361
2362          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
2363          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
2364
2365          glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
2366
2367          result = true;
2368
2369          for(level = 0; result && (w > 1 || h > 1); level++, w >>= 1, h >>= 1)
2370          {
2371             Bitmap mipMap;
2372             if(bitmap.width != w || bitmap.height != h)
2373             {
2374                mipMap = Bitmap { };
2375                if(mipMap.Allocate(null, w, h, w, bitmap.pixelFormat, false))
2376                {
2377                   Surface mipSurface = mipMap.GetSurface(0,0,null);
2378                   mipSurface.Filter(bitmap, 0,0,0,0, w, h, bitmap.width, bitmap.height);
2379                   delete mipSurface;
2380                }
2381                else
2382                {
2383                   result = false;
2384                   delete mipMap;
2385                }
2386             }
2387             else
2388                mipMap = bitmap;
2389
2390             if(result)
2391             {
2392                int error;
2393                //int width = 0;
2394                glGetError();
2395                // glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA8, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2396                glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2397                //printf("Calling glTexImage2D\n");
2398                //glGetTexLevelParameteriv(GL_TEXTURE_2D, level, GL_TEXTURE_WIDTH, &width);
2399                //printf("width = %d (Should be %d, %d)\n", width, w, h);
2400                if((error = glGetError()))
2401                {
2402                   //Logf("OpenGL Bitmap MakeDD error: %d...\n", error);
2403                   //printf("OpenGL Bitmap MakeDD error: %d...\n", error);
2404                   result = false;
2405                }
2406             }
2407             if(mipMap != bitmap)
2408                delete mipMap;
2409             if(!mipMaps) break;
2410          }
2411
2412          if(!bitmap.keepData)
2413             bitmap.driver.FreeBitmap(bitmap.displaySystem, bitmap);
2414          bitmap.driverData = (void *)glBitmap;
2415          bitmap.driver = displaySystem.driver;
2416
2417          if(!result)
2418             FreeBitmap(displaySystem, bitmap);
2419          else if(oglSystem.loadingFont)
2420          {
2421             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
2422             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
2423             oglSystem.loadingFont = false;
2424          }
2425       }
2426       return result;
2427    }
2428
2429    void ReleaseSurface(Display display, Surface surface)
2430    {
2431       glDisable(GL_SCISSOR_TEST);
2432       delete surface.driverData;
2433       surface.driverData = null;
2434    }
2435
2436    bool GetBitmapSurface(DisplaySystem displaySystem, Surface surface, Bitmap bitmap, int x, int y, Box clip)
2437    {
2438       return false;
2439    }
2440
2441    bool GetSurface(Display display, Surface surface, int x,int y, Box clip)
2442    {
2443       bool result = false;
2444       OGLSurface oglSurface = surface.driverData = OGLSurface { };
2445
2446       //Logf("GetSurface\n");
2447
2448       if(oglSurface)
2449       {
2450          if(displayWidth != display.width || displayHeight != display.height)
2451          {
2452             displayWidth = display.width;
2453             displayHeight = display.height;
2454
2455             glViewport(0,0,display.width,display.height);
2456             glLoadIdentity();
2457             glOrtho(0,display.width,display.height,0,0.0,1.0);
2458          }
2459
2460          surface.offset.x = x;
2461          surface.offset.y = y;
2462          surface.unclippedBox = surface.box = clip;
2463          oglSurface.bitmapMult[0] = 1;
2464          oglSurface.bitmapMult[1] = 1;
2465          oglSurface.bitmapMult[2] = 1;
2466          oglSurface.bitmapMult[3] = 1;
2467
2468          glEnable(GL_SCISSOR_TEST);
2469          glScissor(
2470             x+clip.left,
2471             (display.height) -(y+clip.bottom)-1,
2472             clip.right-clip.left+1,
2473             clip.bottom-clip.top+1);
2474          result = true;
2475       }
2476       return result;
2477    }
2478
2479    void Clip(Display display, Surface surface, Box clip)
2480    {
2481       Box box;
2482
2483       //Logf("Clip\n");
2484
2485       if(clip != null)
2486       {
2487          box = clip;
2488          box.Clip(surface.unclippedBox);
2489          surface.box = box;
2490       }
2491       else
2492          box = surface.box = surface.unclippedBox;
2493       box.left += surface.offset.x;
2494       box.top  += surface.offset.y;
2495       box.right+= surface.offset.x;
2496       box.bottom += surface.offset.y;
2497
2498       glScissor(
2499          box.left,display.height - box.bottom - 1,
2500          box.right-box.left+1, box.bottom-box.top+1);
2501    }
2502
2503    bool GrabScreen(Display display, Bitmap bitmap, int x, int y, unsigned int w, unsigned int h)
2504    {
2505       bool result = false;
2506       OGLDisplay oglDisplay = display.driverData;
2507       ColorAlpha * flippingBuffer = oglDisplay.flippingBuffer;
2508
2509       if(oglDisplay.flippingBuffer)
2510       {
2511          if(bitmap.pixelFormat != pixelFormat888 || bitmap.width < w || bitmap.height < h)
2512          {
2513             bitmap.Free();
2514             bitmap.Allocate(null, w,h,w, pixelFormat888, false);
2515          }
2516          if(bitmap)
2517          {
2518             uint row;
2519
2520             glPixelStorei(GL_PACK_ALIGNMENT, 4);
2521             glPixelStorei(GL_PACK_ROW_LENGTH, bitmap.stride);
2522             glPixelStorei(GL_PACK_SKIP_ROWS, 0);
2523             glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
2524             glReadPixels(x,display.height-h-y,w,h,GL_BGRA_EXT,GL_UNSIGNED_BYTE, flippingBuffer);
2525
2526             // Need a flip...
2527             for(row = 0; row<h; row++)
2528                CopyBytesBy4(((ColorAlpha *)bitmap.picture) + row * w, ((ColorAlpha *)flippingBuffer) + (h-row-1) * w, w);
2529             result = true;
2530          }
2531       }
2532       return result;
2533    }
2534
2535    void SetForeground(Display display, Surface surface, ColorAlpha color)
2536    {
2537       OGLSurface oglSurface = surface.driverData;
2538
2539       //Logf("SetForeground\n");
2540
2541       oglSurface.foreground[0] = color.color.r/255.0f;
2542       oglSurface.foreground[1] = color.color.g/255.0f;
2543       oglSurface.foreground[2] = color.color.b/255.0f;
2544       //oglSurface.foreground[3] = 1.0f;
2545       oglSurface.foreground[3] = color.a/255.0f;
2546
2547       //if(!oglSurface.foreground[3])printf("bug");
2548    }
2549
2550    void SetBackground(Display display, Surface surface, ColorAlpha color)
2551    {
2552       OGLSurface oglSurface = surface.driverData;
2553
2554       //Logf("SetBackground\n");
2555
2556       oglSurface.background[0] = color.color.r/255.0f;
2557       oglSurface.background[1] = color.color.g/255.0f;
2558       oglSurface.background[2] = color.color.b/255.0f;
2559       //oglSurface.background[3] = 1.0;
2560       oglSurface.background[3] = color.a/255.0f;
2561    }
2562
2563    void SetBlitTint(Display display, Surface surface, ColorAlpha color)
2564    {
2565       OGLSurface oglSurface = surface.driverData;
2566
2567       oglSurface.bitmapMult[0] = color.color.r/255.0f;
2568       oglSurface.bitmapMult[1] = color.color.g/255.0f;
2569       oglSurface.bitmapMult[2] = color.color.b/255.0f;
2570       oglSurface.bitmapMult[3] = color.a/255.0f;
2571    }
2572
2573    ColorAlpha GetPixel(Display display, Surface surface,int x,int y)
2574    {
2575       return 0;
2576    }
2577
2578    void PutPixel(Display display, Surface surface,int x,int y)
2579    {
2580       OGLSurface oglSurface = surface.driverData;
2581
2582       //Logf("PutPixel\n");
2583
2584       glColor4fv(oglSurface.foreground);
2585       glBegin(GL_POINTS);
2586       // glVertex2i(x+surface.offset.x, y+surface.offset.y);
2587       glVertex2f(x+surface.offset.x + 0.5f, y+surface.offset.y + 0.5f);
2588
2589       glEnd();
2590    }
2591
2592    void DrawLine(Display display, Surface surface, int _x1, int _y1, int _x2, int _y2)
2593    {
2594       OGLSurface oglSurface = surface.driverData;
2595       float x1 = _x1, x2 = _x2, y1 = _y1, y2 = _y2;
2596       if(_x1 == _x2)
2597       {
2598          if(_y2 >= _y1)
2599             y2 += 1;
2600          else
2601             y1 += 1;
2602       }
2603       else if(_y1 == _y2)
2604       {
2605          if(_x2 >= _x1)
2606             x2 += 1;
2607          else
2608             x1 += 1;
2609       }
2610       x1 += surface.offset.x;
2611       y1 += surface.offset.y;
2612       x2 += surface.offset.x;
2613       y2 += surface.offset.y;
2614
2615       //Logf("Line\n");
2616
2617       glColor4fv(oglSurface.foreground);
2618       glBegin(GL_LINES);
2619 #ifdef __ANDROID__
2620       if(stippleEnabled)
2621       {
2622          glTexCoord2f(0.5f, 0);
2623          glVertex2f(x1 + 0.5f, y1 + 0.5f);
2624          glTexCoord2f(Max(x2-x1, y2-y1) + 0.5f, 0);
2625          glVertex2f(x2 + 0.5f, y2 + 0.5f);
2626       }
2627       else
2628 #endif
2629       {
2630          /*
2631          glVertex2i(x1, y1);
2632          glVertex2i(x2, y2);
2633          */
2634          glVertex2f(x1 + 0.5f, y1 + 0.5f);
2635          glVertex2f(x2 + 0.5f, y2 + 0.5f);
2636       }
2637
2638       glEnd();
2639    }
2640
2641    void Rectangle(Display display, Surface surface,int x1,int y1,int x2,int y2)
2642    {
2643       OGLSurface oglSurface = surface.driverData;
2644       x1 += surface.offset.x;
2645       y1 += surface.offset.y;
2646       x2 += surface.offset.x;
2647       y2 += surface.offset.y;
2648
2649       //Logf("Rectangle\n");
2650
2651       glColor4fv(oglSurface.foreground);
2652 #ifdef __ANDROID__
2653       if(stippleEnabled)
2654       {
2655          glBegin(GL_LINES);
2656
2657          glTexCoord2f(0.5f, 0);
2658          glVertex2f(x1 + 0.5f, y1 + 0.5f);
2659          glTexCoord2f(y2-y1 + 0.5f, 0);
2660          glVertex2f(x1 + 0.5f, y2 + 0.5f);
2661
2662          glTexCoord2f(0.5f, 0);
2663          glVertex2f(x1 + 0.5f, y2 + 0.5f);
2664          glTexCoord2f(x2 - x1 + 0.5f, 0);
2665          glVertex2f(x2 + 0.5f, y2 + 0.5f);
2666
2667          glTexCoord2f(0.5f, 0);
2668          glVertex2f(x2 + 0.5f, y2 + 0.5f);
2669          glTexCoord2f(y1 - y2 + 0.5f, 0);
2670          glVertex2f(x2 + 0.5f, y1 + 0.5f);
2671
2672          glTexCoord2f(0.5f, 0);
2673          glVertex2f(x2 + 0.5f, y1 + 0.5f);
2674          glTexCoord2f(x1 - x2 + 0.5f, 0);
2675          glVertex2f(x1 + 0.5f, y1 + 0.5f);
2676       }
2677       else
2678 #endif
2679       {
2680          glBegin(GL_LINE_LOOP);
2681          /*
2682          glVertex2i(x1, y1);
2683          glVertex2i(x1, y2);
2684          glVertex2i(x2, y2);
2685          glVertex2i(x2, y1);
2686          */
2687          glVertex2f(x1 + 0.5f, y1 + 0.5f);
2688          glVertex2f(x1 + 0.5f, y2 + 0.5f);
2689          glVertex2f(x2 + 0.5f, y2 + 0.5f);
2690          glVertex2f(x2 + 0.5f, y1 + 0.5f);
2691       }
2692       glEnd();
2693    }
2694
2695    void Area(Display display, Surface surface,int x1,int y1,int x2,int y2)
2696    {
2697       OGLSurface oglSurface = surface.driverData;
2698       //Logf("Area\n");
2699
2700       glColor4fv(oglSurface.background);
2701       glRecti(x1+surface.offset.x, y1+surface.offset.y,
2702               x2+surface.offset.x + 1, y2+surface.offset.y + 1);
2703
2704       /*
2705       glRectf(x1+surface.offset.x, y1+surface.offset.y,
2706               x2+surface.offset.x + 1, y2+surface.offset.y + 1);
2707       */
2708    }
2709
2710    void Clear(Display display, Surface surface, ClearType type)
2711    {
2712       OGLDisplay oglDisplay = display.driverData;
2713       OGLSurface oglSurface = surface.driverData;
2714
2715       //Logf("Clear\n");
2716       if(type != depthBuffer)
2717          glClearColor(oglSurface.background[0], oglSurface.background[1], oglSurface.background[2], oglSurface.background[3]);
2718       if(type != colorBuffer && !oglDisplay.depthWrite)
2719       {
2720          glDepthMask((byte)bool::true);
2721       }
2722       glClear(((type != depthBuffer) ? GL_COLOR_BUFFER_BIT : 0) |
2723               ((type != colorBuffer) ? GL_DEPTH_BUFFER_BIT : 0));
2724       if(type != colorBuffer && !oglDisplay.depthWrite)
2725       {
2726          glDepthMask((byte)bool::false);
2727       }
2728    }
2729
2730    bool ConvertBitmap(DisplaySystem displaySystem, Bitmap bitmap, PixelFormat format, ColorAlpha * palette)
2731    {
2732       return true;
2733    }
2734
2735    void Blit(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h)
2736    {
2737       OGLSurface oglSurface = surface.driverData;
2738
2739 #if !defined(__OLDX__)
2740          // WHY DO WE HAVE GL_ONE HERE ?
2741          /*if(glBlendFuncSeparate && !oglSurface.writingText)
2742             glBlendFuncSeparate(GL_ONE, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
2743 #endif
2744
2745       if(!oglSurface.writingText)
2746       {
2747          // glTranslatef(-0.375f, -0.375f, 0.0f);
2748          glEnable(GL_TEXTURE_2D);
2749          glColor4fv(oglSurface.bitmapMult);
2750       }
2751       else if(oglSurface.xOffset)
2752          glTranslated(oglSurface.xOffset / 64.0/*-0.375*/, 0.0, 0.0);
2753
2754       glBindTexture(GL_TEXTURE_2D, (uint)bitmap.driverData);
2755       glBegin(GL_QUADS);
2756
2757       if(h < 0)
2758       {
2759          glTexCoord2f((float)sx/ bitmap.width, (float)(sy-h)/ bitmap.height);
2760          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
2761          glTexCoord2f((float)(sx+w) / bitmap.width, (float)(sy-h)/ bitmap.height);
2762          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
2763          glTexCoord2f((float)(sx+w)/ bitmap.width, (float)sy/ bitmap.height);
2764          glVertex2i(dx+w+surface.offset.x, dy-h+surface.offset.y);
2765          glTexCoord2f((float)sx / bitmap.width, (float)sy/ bitmap.height);
2766          glVertex2i(dx+surface.offset.x, dy-h+surface.offset.y);
2767       }
2768       else
2769       {
2770          /*
2771          glTexCoord2f((float)sx / bitmap.width, (float)sy/ bitmap.height);
2772          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
2773          glTexCoord2f((float)(sx+w)/ bitmap.width, (float)sy/ bitmap.height);
2774          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
2775          glTexCoord2f((float)(sx+w) / bitmap.width, (float)(sy+h)/ bitmap.height);
2776          glVertex2i(dx+w+surface.offset.x, dy+h+surface.offset.y);
2777          glTexCoord2f((float)sx/ bitmap.width, (float)(sy+h)/ bitmap.height);
2778          glVertex2i(dx+surface.offset.x, dy+h+surface.offset.y);
2779          */
2780
2781          glTexCoord2f((float)sx / bitmap.width, (float)sy/ bitmap.height);
2782          glVertex2f((float)dx+surface.offset.x, (float)dy+surface.offset.y);
2783          glTexCoord2f((float)(sx+w)/ bitmap.width, (float)sy/ bitmap.height);
2784          glVertex2f((float)dx+w+surface.offset.x, (float)dy+surface.offset.y);
2785          glTexCoord2f((float)(sx+w) / bitmap.width, (float)(sy+h)/ bitmap.height);
2786          glVertex2f((float)dx+w+surface.offset.x, (float)dy+h+surface.offset.y);
2787          glTexCoord2f((float)sx/ bitmap.width, (float)(sy+h)/ bitmap.height);
2788          glVertex2f((float)dx+surface.offset.x, (float)dy+h+surface.offset.y);
2789       }
2790       glEnd();
2791
2792       if(!oglSurface.writingText)
2793       {
2794          glDisable(GL_TEXTURE_2D);
2795
2796          //glTranslate(0.375, 0.375, 0.0);
2797       }
2798       else if(oglSurface.xOffset)
2799          glTranslated(-oglSurface.xOffset / 64.0/*+0.375*/, 0.0, 0.0);
2800
2801 #if !defined(__OLDX__)
2802          /*if(glBlendFuncSeparate && !oglSurface.writingText)
2803             glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
2804 #endif
2805    }
2806
2807    void Stretch(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
2808    {
2809       OGLSurface oglSurface = surface.driverData;
2810
2811       //glTranslate(-0.375, -0.375, 0.0);
2812
2813       //Logf("Stretch\n");
2814
2815 #if !defined(__OLDX__)
2816       /*if(glBlendFuncSeparate)
2817          glBlendFuncSeparate(GL_ONE, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
2818 #endif
2819
2820       glEnable(GL_TEXTURE_2D);
2821       glBindTexture(GL_TEXTURE_2D, (uint)bitmap.driverData);
2822
2823       glColor4fv(oglSurface.bitmapMult);
2824
2825       glBegin(GL_QUADS);
2826
2827       if(h < 0)
2828       {
2829          glTexCoord2f((float)(sx)/ bitmap.width, (float)(sy+sh)/ bitmap.height);
2830          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
2831
2832          glTexCoord2f((float)(sx+sw) / bitmap.width, (float)(sy+sh)/ bitmap.height);
2833          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
2834
2835          glTexCoord2f((float)(sx+sw)/ bitmap.width, (float)(sy)/ bitmap.height);
2836          glVertex2i(dx+w+surface.offset.x, dy-h+surface.offset.y);
2837
2838          glTexCoord2f((float)(sx) / bitmap.width, (float)(sy)/ bitmap.height);
2839          glVertex2i(dx+surface.offset.x, dy-h+surface.offset.y);
2840       }
2841       else
2842       {
2843          glTexCoord2f((float)(sx) / bitmap.width, (float)(sy)/ bitmap.height);
2844          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
2845
2846          glTexCoord2f((float)(sx+sw)/ bitmap.width, (float)(sy)/ bitmap.height);
2847          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
2848
2849          glTexCoord2f((float)(sx+sw) / bitmap.width, (float)(sy+sh)/ bitmap.height);
2850          glVertex2i(dx+w+surface.offset.x, dy+h+surface.offset.y);
2851
2852          glTexCoord2f((float)(sx)/ bitmap.width, (float)(sy+sh)/ bitmap.height);
2853          glVertex2i(dx+surface.offset.x, dy+h+surface.offset.y);
2854       }
2855
2856       glEnd();
2857
2858       glDisable(GL_TEXTURE_2D);
2859
2860       //glTranslate(0.375, 0.375, 0.0);
2861 #if !defined(__OLDX__)
2862       /*if(glBlendFuncSeparate)
2863          glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
2864 #endif
2865
2866    }
2867
2868    void Filter(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
2869    {
2870       Stretch(display, surface, bitmap, dx, dy, sx, sy, w, h, sw, sh);
2871    }
2872
2873    void StretchDI(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
2874    {
2875       float s2dw,s2dh,d2sw,d2sh;
2876       bool flipX = false, flipY = false;
2877
2878       //Logf("StretchDI\n");
2879
2880       if(Sgn(w) != Sgn(sw))
2881       {
2882          w = Abs(w);
2883          sw = Abs(sw);
2884          flipX = true;
2885       }
2886       if(Sgn(h) != Sgn(sh))
2887       {
2888          h = Abs(h);
2889          sh = Abs(sh);
2890          flipY = true;
2891       }
2892
2893       s2dw=(float)w / sw;
2894       s2dh=(float)h / sh;
2895       d2sw=(float)sw / w;
2896       d2sh=(float)sh / h;
2897
2898       //Clip against the edges of the source
2899       if(sx<0)
2900       {
2901          dx+=(int)((0-sx) * s2dw);
2902          w-=(int)((0-sx) * s2dw);
2903          sw-=0-sx;
2904          sx=0;
2905       }
2906       if(sy<0)
2907       {
2908          dy+=(int)((0-sy) * s2dh);
2909          h-=(int)((0-sy) * s2dh);
2910
2911          sh-=0-sy;
2912          sy=0;
2913       }
2914       if(sx+sw>bitmap.width-1)
2915       {
2916          w-=(int)((sx+sw-(bitmap.width-1)-1)*s2dw);
2917          sw-=sx+sw-(bitmap.width-1)-1;
2918       }
2919       if(sy+sh>(bitmap.height-1))
2920       {
2921          h-=(int)((sy+sh-(bitmap.height-1)-1)*s2dh);
2922          sh-=sy+sh-(bitmap.height-1)-1;
2923       }
2924       //Clip against the edges of the surfaceination
2925       if(dx<surface.box.left)
2926       {
2927          //if(!flip)
2928          sx+=(int)((surface.box.left-dx)*d2sw);
2929          sw-=(int)((surface.box.left-dx)*d2sw);
2930          w-=surface.box.left-dx;
2931          dx=surface.box.left;
2932       }
2933       if(dy<surface.box.top)
2934       {
2935          sy+=(int)((surface.box.top-dy)*d2sh);
2936          sh-=(int)((surface.box.top-dy)*d2sh);
2937          h-=surface.box.top-dy;
2938          dy=surface.box.top;
2939       }
2940       if(dx+w>surface.box.right)
2941       {
2942          //if(flip) sx+=(int)((dx+w-surface.box.right-1)*d2sw);
2943          sw-=(int)((dx+w-surface.box.right-1)*d2sw);
2944          w-=dx+w-surface.box.right-1;
2945       }
2946       if(dy+h>surface.box.bottom)
2947       {
2948          sh-=(int)((dy+h-surface.box.bottom-1)*d2sh);
2949          h-=dy+h-surface.box.bottom-1;
2950       }
2951       if((w<=0)||(h<=0)||(sw<=0)||(sh<=0)) return;
2952
2953       dx += surface.offset.x;
2954       dy += surface.offset.y;
2955
2956       if(bitmap.pixelFormat == pixelFormat888 && !bitmap.paletteShades)
2957       {
2958          glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
2959          glPixelStorei(GL_UNPACK_ROW_LENGTH, bitmap.stride);
2960          glPixelStorei(GL_UNPACK_SKIP_PIXELS, sx);
2961          glPixelStorei(GL_UNPACK_SKIP_ROWS, sy);
2962          glRasterPos2d(dx,dy);
2963          //glPixelZoom(flipX ? -s2dw : s2dw, flipY ? s2dh : -s2dh);
2964          glPixelZoom(s2dw, -s2dh);
2965          glDrawPixels(sw,sh,GL_BGRA_EXT,GL_UNSIGNED_BYTE, bitmap.picture);
2966          glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
2967          glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
2968          glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
2969          glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
2970       }
2971    }
2972
2973    void BlitDI(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h)
2974    {
2975       //Logf("BlitDI\n");
2976
2977       //Clip against the edges of the source
2978       if(sx<0)
2979       {
2980          dx+=-sx;
2981          w-=-sx;
2982          sx=0;
2983       }
2984       if(sy<0)
2985       {
2986          dy+=0-sy;
2987          h-=0-sy;
2988          sy=0;
2989       }
2990       if(sx+w>bitmap.width-1)
2991          w-=sx+w-(bitmap.width-1)-1;
2992       if(sy+h>bitmap.height-1)
2993          h-=sy+h-(bitmap.height-1)-1;
2994       //Clip against the edges of the surfaceination
2995       if(dx<surface.box.left)
2996       {
2997          //if(!flip)
2998          sx+=surface.box.left-dx;
2999          w-=surface.box.left-dx;
3000          dx=surface.box.left;
3001       }
3002       if(dy<surface.box.top)
3003       {
3004          sy+=surface.box.top-dy;
3005          h-=surface.box.top-dy;
3006          dy=surface.box.top;
3007       }
3008       if(dx+w>surface.box.right)
3009       {
3010          //if(flip) sx+=dx+w-surface.box.right-1;
3011          w-=dx+w-surface.box.right-1;
3012       }
3013       if(dy+h>surface.box.bottom)
3014          h-=dy+h-surface.box.bottom-1;
3015       if((w<=0)||(h<=0))
3016          return;
3017
3018       dx += surface.offset.x;
3019       dy += surface.offset.y;
3020
3021       if(bitmap.pixelFormat == pixelFormat888 && !bitmap.paletteShades)
3022       {
3023          glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
3024          glPixelStorei(GL_UNPACK_ROW_LENGTH, bitmap.stride);
3025          glPixelStorei(GL_UNPACK_SKIP_PIXELS, sx);
3026          glPixelStorei(GL_UNPACK_SKIP_ROWS, sy);
3027          glRasterPos2d(dx,dy);
3028          glPixelZoom(1,-1);
3029          glDrawPixels(w,h,GL_BGRA_EXT,GL_UNSIGNED_BYTE, bitmap.picture);
3030          glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
3031          glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
3032          glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
3033          glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
3034       }
3035    }
3036
3037    void FilterDI(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
3038    {
3039       StretchDI(display, surface, bitmap, dx, dy, sx, sy, w, h, sw, sh);
3040    }
3041
3042    void UnloadFont(DisplaySystem displaySystem, Font font)
3043    {
3044       ((subclass(DisplayDriver))class(LFBDisplayDriver)).UnloadFont(displaySystem, font);
3045    }
3046
3047    Font LoadFont(DisplaySystem displaySystem, char * faceName, float size, FontFlags flags)
3048    {
3049       Font font;
3050       OGLSystem oglSystem = displaySystem.driverData;
3051       oglSystem.loadingFont = true;
3052       font = ((subclass(DisplayDriver))class(LFBDisplayDriver)).LoadFont(displaySystem, faceName, size, flags);
3053       return font;
3054    }
3055
3056    void FontExtent(DisplaySystem displaySystem, Font font, char * text, int len, int * width, int * height)
3057    {
3058       ((subclass(DisplayDriver))class(LFBDisplayDriver)).FontExtent(displaySystem, font, text, len, width, height);
3059    }
3060
3061    void WriteText(Display display, Surface surface, int x, int y, char * text, int len)
3062    {
3063       OGLSurface oglSurface = surface.driverData;
3064       OGLSystem oglSystem = display.displaySystem.driverData;
3065       oglSystem.loadingFont = true;
3066
3067       //glTranslated(-0.375, -0.375, 0.0);
3068
3069       //Logf("Blit\n");
3070
3071       if(surface.textOpacity)
3072       {
3073          int w, h;
3074          FontExtent(display.displaySystem, surface.font, text, len, &w, &h);
3075          display.displaySystem.driver.Area(display, surface,x,y,x+w-1,y+h-1);
3076       }
3077
3078       oglSurface.writingText = true;
3079
3080       glEnable(GL_TEXTURE_2D);
3081       glColor4fv(oglSurface.foreground);
3082
3083       ((subclass(DisplayDriver))class(LFBDisplayDriver)).WriteText(display, surface, x, y, text, len);
3084       oglSurface.writingText = false;
3085       oglSystem.loadingFont = false;
3086
3087       glDisable(GL_TEXTURE_2D);
3088
3089       //glTranslated(0.375, 0.375, 0.0);
3090    }
3091
3092    void TextFont(Display display, Surface surface, Font font)
3093    {
3094       ((subclass(DisplayDriver))class(LFBDisplayDriver)).TextFont(display, surface, font);
3095    }
3096
3097    void TextOpacity(Display display, Surface surface, bool opaque)
3098    {
3099       OGLSurface oglSurface = surface.driverData;
3100       oglSurface.opaqueText = opaque;
3101    }
3102
3103    void TextExtent(Display display, Surface surface, char * text, int len, int * width, int * height)
3104    {
3105       OGLSurface oglSurface = surface.driverData;
3106       OGLSystem oglSystem = display.displaySystem.driverData;
3107       oglSystem.loadingFont = true;
3108       FontExtent(display.displaySystem, oglSurface.font, text, len, width, height);
3109       oglSystem.loadingFont = false;
3110    }
3111
3112    void DrawingChar(Display display, Surface surface, char character)
3113    {
3114
3115    }
3116
3117    void LineStipple(Display display, Surface surface, uint32 stipple)
3118    {
3119       //Logf("Stipple\n");
3120
3121       if(stipple)
3122       {
3123 #if defined(__ANDROID__)
3124          stippleEnabled = true;
3125          glesLineStipple(1, (uint16)stipple);
3126 #else
3127          glLineStipple(1, (uint16)stipple);
3128          glEnable(GL_LINE_STIPPLE);
3129 #endif
3130       }
3131       else
3132       {
3133 #if defined(__ANDROID__)
3134          stippleEnabled = false;
3135          glMatrixMode(GL_TEXTURE);
3136          glLoadIdentity();
3137          glMatrixMode(GL_PROJECTION);
3138          glDisable(GL_TEXTURE_2D);
3139 #else
3140          glDisable(GL_LINE_STIPPLE);
3141 #endif
3142       }
3143    }
3144 #if !defined(ECERE_NO3D) && !defined(ECERE_VANILLA)
3145    void SetRenderState(Display display, RenderState state, uint value)
3146    {
3147       OGLDisplay oglDisplay = display.driverData;
3148       //Logf("RenderState\n");
3149
3150       switch(state)
3151       {
3152          case antiAlias:
3153             if(value)
3154                glEnable(GL_MULTISAMPLE_ARB);
3155             else
3156                glDisable(GL_MULTISAMPLE_ARB);
3157             break;
3158          case fillMode:
3159             glPolygonMode(GL_FRONT_AND_BACK, ((FillModeValue)value == solid) ? GL_FILL : GL_LINE);
3160             break;
3161          case depthTest:
3162             if(value) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
3163             break;
3164          case depthWrite:
3165             if(value) glDepthMask((byte)bool::true); else glDepthMask((byte)bool::false);
3166             oglDisplay.depthWrite = value;
3167             break;
3168          case fogColor:
3169          {
3170             float color[4] = { ((Color)value).r/255.0f, ((Color)value).g/255.0f, ((Color)value).b/255.0f, 1.0f };
3171             glFogfv(GL_FOG_COLOR, (float *)&color);
3172             break;
3173          }
3174          case fogDensity:
3175             value *= nearPlane;
3176             glFogf(GL_FOG_DENSITY, *(float *)(void *)&value);
3177             break;
3178          case blend:
3179             if(value) glEnable(GL_BLEND); else glDisable(GL_BLEND);
3180             break;
3181          case ambient:
3182          {
3183             float ambient[4] = { ((Color)value).r/255.0f, ((Color)value).g/255.0f, ((Color)value).b/255.0f, 1.0f };
3184             glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambient);
3185             break;
3186          }
3187          case alphaWrite:
3188          {
3189             if(value) glColorMask(1,1,1,1); else glColorMask(1,1,1,0);
3190             break;
3191          }
3192          case vSync:
3193          {
3194 #if defined(__WIN32__)
3195             wglSwapIntervalEXT(value ? 1 : 0);
3196 #endif
3197             break;
3198          }
3199       }
3200    }
3201
3202    void SetLight(Display display, int id, Light light)
3203    {
3204       //Logf("SetLight\n");
3205
3206       if(light != null)
3207       {
3208          Object lightObject = light.lightObject;
3209          float position[4] = { 0, 0, 0, 0 };
3210          float color[4] = { 0, 0, 0, 1 };
3211
3212          glEnable(GL_LIGHT0 + id);
3213          /*
3214          glLightfv(GL_LIGHT0 + id, GL_DIFFUSE, (float *)&light.diffuse);
3215          glLightfv(GL_LIGHT0 + id, GL_AMBIENT, (float *)&light.ambient);
3216          glLightfv(GL_LIGHT0 + id, GL_SPECULAR,(float *)&light.specular);
3217          */
3218
3219          if(!light.multiplier) light.multiplier = 1.0f;
3220
3221          color[0] = light.diffuse.r * light.multiplier;
3222          color[1] = light.diffuse.g * light.multiplier;
3223          color[2] = light.diffuse.b * light.multiplier;
3224          glLightfv(GL_LIGHT0 + id, GL_DIFFUSE, color);
3225
3226          color[0] = light.ambient.r * light.multiplier;
3227          color[1] = light.ambient.g * light.multiplier;
3228          color[2] = light.ambient.b * light.multiplier;
3229          glLightfv(GL_LIGHT0 + id, GL_AMBIENT, color);
3230          color[0] = light.specular.r * light.multiplier;
3231          color[1] = light.specular.g * light.multiplier;
3232          color[2] = light.specular.b * light.multiplier;
3233          glLightfv(GL_LIGHT0 + id, GL_SPECULAR,color);
3234
3235          if(lightObject)
3236          {
3237             Vector3D positionVector;
3238             if(light.flags.spot)
3239             {
3240                if(lightObject.flags.root || !lightObject.parent)
3241                {
3242                   positionVector = lightObject.transform.position;
3243                   positionVector.Subtract(positionVector, display.display3D.camera.cPosition);
3244                }
3245                else
3246                {
3247                   positionVector.MultMatrix(lightObject.transform.position, lightObject.parent.matrix);
3248                   if(display.display3D.camera)
3249                      positionVector.Subtract(positionVector, display.display3D.camera.cPosition);
3250                }
3251                position[3] = 1;
3252             }
3253             else
3254             {
3255                if(!light.direction.x && !light.direction.y && !light.direction.z)
3256                {
3257                   Vector3Df vector { 0,0,-1 };
3258                   Matrix mat;
3259                   mat.RotationQuaternion(light.orientation);
3260                   positionVector.MultMatrixf(vector, mat);
3261                }
3262                else
3263                {
3264                   positionVector = light.direction;
3265                   position[3] = 1;
3266                }
3267             }
3268
3269             position[0] = (float)positionVector.x;
3270             position[1] = (float)positionVector.y;
3271             position[2] = (float)positionVector.z;
3272
3273             glLightfv(GL_LIGHT0 + id, GL_POSITION, position);
3274
3275             /*
3276             // Display Light Position
3277             glDisable(GL_LIGHTING);
3278             glDisable(GL_DEPTH_TEST);
3279             glColor3f(1,1,1);
3280             glPointSize(10);
3281             glBegin(GL_POINTS);
3282             glVertex3fv(position);
3283             glEnd();
3284             glEnable(GL_DEPTH_TEST);
3285             glEnable(GL_LIGHTING);
3286
3287
3288             // Display Target
3289             if(lightObject.flags.root || !lightObject.parent)
3290             {
3291                positionVector = light.target.transform.position;
3292                positionVector.Subtract(positionVector, display.camera.cPosition);
3293             }
3294             else
3295             {
3296                positionVector.MultMatrix(light.target.transform.position,
3297                   lightObject.light.target.parent.matrix);
3298                positionVector.Subtract(positionVector, display.camera.cPosition);
3299             }
3300
3301             position[0] = positionVector.x;
3302             position[1] = positionVector.y;
3303             position[2] = positionVector.z;
3304
3305             glDisable(GL_LIGHTING);
3306             glDisable(GL_DEPTH_TEST);
3307             glColor3f(1,1,0);
3308             glPointSize(10);
3309             glBegin(GL_POINTS);
3310             glVertex3fv(position);
3311             glEnd();
3312             glEnable(GL_DEPTH_TEST);
3313             glEnable(GL_LIGHTING);
3314             */
3315
3316             if(light.flags.attenuation)
3317             {
3318                glLightf(GL_LIGHT0 + id, GL_CONSTANT_ATTENUATION, light.Kc);
3319                glLightf(GL_LIGHT0 + id, GL_LINEAR_ATTENUATION, light.Kl);
3320                glLightf(GL_LIGHT0 + id, GL_QUADRATIC_ATTENUATION, light.Kq);
3321             }
3322
3323             if(light.flags.spot)
3324             {
3325                float exponent = 0;
3326                #define MAXLIGHT  0.9
3327                float direction[4] = { (float)light.direction.x, (float)light.direction.y, (float)light.direction.z, 1 };
3328                // Figure out exponent out of the hot spot
3329                exponent = (float)(log(MAXLIGHT) / log(cos((light.hotSpot / 2))));
3330
3331                glLightfv(GL_LIGHT0 + id, GL_SPOT_DIRECTION, direction);
3332                glLightf(GL_LIGHT0 + id, GL_SPOT_CUTOFF, (float)(light.fallOff / 2));
3333                glLightf(GL_LIGHT0 + id, GL_SPOT_EXPONENT, exponent);
3334             }
3335          }
3336          else
3337          {
3338
3339             Vector3Df vector { 0,0,-1 };
3340             Vector3Df direction;
3341             Matrix mat;
3342
3343             mat.RotationQuaternion(light.orientation);
3344             direction.MultMatrix(vector, mat);
3345
3346             position[0] = direction.x;
3347             position[1] = direction.y;
3348             position[2] = direction.z;
3349
3350             glLightfv(GL_LIGHT0 + id, GL_POSITION, position);
3351          }
3352       }
3353       else
3354          glDisable(GL_LIGHT0 + id);
3355    }
3356
3357    void SetCamera(Display display, Surface surface, Camera camera)
3358    {
3359       OGLDisplay oglDisplay = display.driverData;
3360       //Logf("SetCamera\n");
3361
3362       if(camera)
3363       {
3364          int left = surface.box.left + surface.offset.x;
3365          int top = surface.box.top  + surface.offset.y;
3366          int right = surface.box.right + surface.offset.x;
3367          int bottom = surface.box.bottom + surface.offset.y;
3368          float origX = surface.offset.x + camera.origin.x;
3369          float origY = surface.offset.y + camera.origin.y;
3370          int x = left;
3371          int y = display.height - bottom - 1;
3372          int w = right - left + 1;
3373          int h = bottom - top + 1;
3374
3375          // *** ViewPort ***
3376          glViewport(x, y, w, h);
3377
3378          // *** Projection Matrix ***
3379          if(!display.display3D.camera)
3380             glPushMatrix();
3381          else
3382             glMatrixMode(GL_PROJECTION);
3383          if(display.display3D.collectingHits)
3384          {
3385             float pickX = display.display3D.pickX + surface.offset.x;
3386             float pickY = display.height - (display.display3D.pickY + surface.offset.y) - 1;
3387             Matrix pickMatrix =
3388             {
3389                {
3390                   w / display.display3D.pickWidth, 0, 0, 0,
3391                   0, h / display.display3D.pickHeight, 0, 0,
3392                   0, 0, 1, 0,
3393                   (w + 2.0f * (x - pickX)) / display.display3D.pickWidth,
3394                   (h + 2.0f * (y - pickY)) / display.display3D.pickHeight, 0, 1
3395                }
3396             };
3397             glLoadMatrixd(pickMatrix.array);
3398          }
3399          else
3400             glLoadIdentity();
3401          glFrustum(
3402             (left   - origX) * camera.zMin / camera.focalX,
3403             (right  - origX) * camera.zMin / camera.focalX,
3404             (bottom - origY) * camera.zMin / camera.focalY,
3405             (top    - origY) * camera.zMin / camera.focalY,
3406             camera.zMin, camera.zMax);
3407
3408          glDisable(GL_BLEND);
3409
3410          // *** Z Inverted Identity Matrix ***
3411          glMatrixMode(GL_MODELVIEW);
3412          if(!display.display3D.camera)
3413             glPushMatrix();
3414
3415          glLoadIdentity();
3416
3417          glScaled(1.0/nearPlane, 1.0/nearPlane, -1.0/nearPlane);
3418
3419          // *** View Matrix ***
3420          glMultMatrixd(camera.viewMatrix.array);
3421
3422          // *** Lights ***
3423          // ...
3424
3425          glEnable(GL_DEPTH_TEST);
3426          glEnable(GL_LIGHTING);
3427          glShadeModel(GL_SMOOTH);
3428          glDepthMask((byte)bool::true);
3429          oglDisplay.depthWrite = true;
3430
3431          glEnable(GL_MULTISAMPLE_ARB);
3432       }
3433       else if(display.display3D.camera)
3434       {
3435          oglDisplay.depthWrite = false;
3436          glViewport(0,0,display.width,display.height);
3437
3438          glDisable(GL_CULL_FACE);
3439          glDisable(GL_DEPTH_TEST);
3440          glDisable(GL_LIGHTING);
3441          glDisable(GL_FOG);
3442          glDisable(GL_TEXTURE_2D);
3443          glShadeModel(GL_FLAT);
3444          glEnable(GL_BLEND);
3445          glDisable(GL_MULTISAMPLE_ARB);
3446
3447          // *** Restore 2D MODELVIEW Matrix ***
3448          glPopMatrix();
3449
3450          // *** Restore 2D PROJECTION Matrix ***
3451          glMatrixMode(GL_PROJECTION);
3452          glPopMatrix();
3453       }
3454
3455       GLBindBuffer(GL_ARRAY_BUFFER_ARB, 0);
3456    }
3457
3458    void ApplyMaterial(Display display, Material material, Mesh mesh)
3459    {
3460       //Logf("ApplyMaterial\n");
3461
3462       // Basic Properties
3463       if(material.flags.doubleSided)
3464       {
3465          glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, !material.flags.singleSideLight);
3466          glDisable(GL_CULL_FACE);
3467       }
3468       else
3469       {
3470          glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, bool::false);
3471          glEnable(GL_CULL_FACE);
3472       }
3473
3474       // Fog
3475       if(material.flags.noFog)
3476          glDisable(GL_FOG);
3477       else
3478          glEnable(GL_FOG);
3479
3480       // Maps
3481       if(material.baseMap && mesh.texCoords)
3482       {
3483          Bitmap map = material.baseMap;
3484          glEnable(GL_TEXTURE_2D);
3485          glBindTexture(GL_TEXTURE_2D, (uint)map.driverData);
3486
3487          glMatrixMode(GL_TEXTURE);
3488          glLoadIdentity();
3489          if(material.uScale && material.vScale)
3490             glScalef(material.uScale, material.vScale, 1);
3491          glMatrixMode(GL_MODELVIEW);
3492
3493          if(material.flags.tile)
3494          {
3495             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
3496             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
3497          }
3498          else
3499          {
3500             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
3501             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
3502          }
3503       }
3504       else
3505          glDisable(GL_TEXTURE_2D);
3506
3507       if(mesh.flags.colors)
3508       {
3509          glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
3510          glEnable(GL_COLOR_MATERIAL);
3511       }
3512       else
3513       {
3514          glDisable(GL_COLOR_MATERIAL);
3515          {
3516             float color[4] = { material.diffuse.r, material.diffuse.g, material.diffuse.b, material.opacity };
3517             glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, color);
3518          }
3519          {
3520             float color[4] = { material.ambient.r, material.ambient.g, material.ambient.b, 0 };
3521             glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, color);
3522          }
3523       }
3524       {
3525          float color[4] = { material.specular.r, material.specular.g, material.specular.b, 0 };
3526          glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, color);
3527       }
3528       {
3529          float color[4] = { material.emissive.r, material.emissive.g, material.emissive.b, 0 };
3530          glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, color);
3531       }
3532
3533       glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, &material.power);
3534    }
3535
3536    void FreeMesh(DisplaySystem displaySystem, Mesh mesh)
3537    {
3538       OGLMesh oglMesh = mesh.data;
3539       if(oglMesh)
3540       {
3541          if(!mesh.flags.vertices)
3542          {
3543             if(oglMesh.vertices)
3544             {
3545                GLDeleteBuffers(1, &oglMesh.vertices);
3546                oglMesh.vertices = 0;
3547             }
3548             delete mesh.vertices;
3549          }
3550          if(!mesh.flags.normals)
3551          {
3552             if(oglMesh.normals)
3553             {
3554                GLDeleteBuffers(1, &oglMesh.normals);
3555                oglMesh.normals = 0;
3556             }
3557             delete mesh.normals;
3558          }
3559          if(!mesh.flags.texCoords1)
3560          {
3561             if(oglMesh.texCoords)
3562             {
3563                GLDeleteBuffers(1, &oglMesh.texCoords);
3564                oglMesh.texCoords = 0;
3565             }
3566             delete mesh.texCoords;
3567          }
3568          if(!mesh.flags.texCoords2)
3569          {
3570             if(oglMesh.texCoords2)
3571             {
3572                GLDeleteBuffers(1, &oglMesh.texCoords2);
3573                oglMesh.texCoords2 = 0;
3574             }
3575             /*
3576             delete mesh.texCoords2;
3577             */
3578          }
3579          if(!mesh.flags.colors)
3580          {
3581             if(oglMesh.colors)
3582             {
3583                GLDeleteBuffers(1, &oglMesh.colors);
3584                oglMesh.colors = 0;
3585             }
3586          }
3587          if(!mesh.flags)
3588          {
3589             delete oglMesh;
3590             mesh.data = null;
3591          }
3592       }
3593    }
3594
3595    bool AllocateMesh(DisplaySystem displaySystem, Mesh mesh)
3596    {
3597       bool result = false;
3598
3599       if(!mesh.data)
3600          mesh.data = OGLMesh { };
3601       if(mesh.data)
3602       {
3603          OGLMesh oglMesh = mesh.data;
3604
3605          if(mesh.flags.vertices && !oglMesh.vertices && !mesh.vertices)
3606          {
3607             mesh.vertices = mesh.flags.doubleVertices ? (Vector3Df *)new Vector3D[mesh.nVertices] : new Vector3Df[mesh.nVertices];
3608             GLGenBuffers(1, &oglMesh.vertices);
3609          }
3610          if(mesh.flags.normals && !oglMesh.normals && !mesh.normals)
3611          {
3612             GLGenBuffers( 1, &oglMesh.normals);
3613             mesh.normals = mesh.flags.doubleNormals ? (Vector3Df *)new Vector3D[mesh.nVertices] : new Vector3Df[mesh.nVertices];
3614          }
3615          if(mesh.flags.texCoords1 && !oglMesh.texCoords && !mesh.texCoords)
3616          {
3617             GLGenBuffers( 1, &oglMesh.texCoords);
3618             mesh.texCoords = new Pointf[mesh.nVertices];
3619          }
3620          if(mesh.flags.colors && !oglMesh.colors && !mesh.colors)
3621          {
3622             GLGenBuffers( 1, &oglMesh.colors);
3623             mesh.colors = new ColorRGBAf[mesh.nVertices];
3624          }
3625          result = true;
3626       }
3627       return result;
3628    }
3629
3630    void UnlockMesh(DisplaySystem displaySystem, Mesh mesh, MeshFeatures flags)
3631    {
3632       OGLMesh oglMesh = mesh.data;
3633       if(!flags) flags = mesh.flags;
3634
3635       if(vboAvailable)
3636       {
3637          if(!(flags.vertices) || oglMesh.vertices)
3638          {
3639             GLBindBuffer(GL_ARRAY_BUFFER_ARB, oglMesh.vertices);
3640             GLBufferData( mesh.flags.doubleVertices ? GL_DOUBLE : GL_FLOAT, GL_ARRAY_BUFFER_ARB, mesh.nVertices * (mesh.flags.doubleVertices ? sizeof(Vector3D) : sizeof(Vector3Df)), mesh.vertices, GL_STATIC_DRAW_ARB );
3641          }
3642
3643          if(!(flags.normals) || oglMesh.normals)
3644          {
3645             GLBindBuffer(GL_ARRAY_BUFFER_ARB, oglMesh.normals);
3646             GLBufferData( mesh.flags.doubleNormals ? GL_DOUBLE : GL_FLOAT, GL_ARRAY_BUFFER_ARB, mesh.nVertices * (mesh.flags.doubleNormals ? sizeof(Vector3D) : sizeof(Vector3Df)), mesh.normals, GL_STATIC_DRAW_ARB );
3647          }
3648
3649          if(!(flags.texCoords1) || oglMesh.texCoords)
3650          {
3651             GLBindBuffer(GL_ARRAY_BUFFER_ARB, oglMesh.texCoords);
3652             GLBufferData( GL_FLOAT, GL_ARRAY_BUFFER_ARB, mesh.nVertices * sizeof(Pointf), mesh.texCoords, GL_STATIC_DRAW_ARB );
3653          }
3654
3655          if(!(flags.colors) || oglMesh.colors)
3656          {
3657             GLBindBuffer( GL_ARRAY_BUFFER_ARB, oglMesh.colors);
3658             GLBufferData( GL_FLOAT, GL_ARRAY_BUFFER_ARB, mesh.nVertices * sizeof(ColorRGBAf), mesh.colors, GL_STATIC_DRAW_ARB );
3659          }
3660
3661          GLBindBuffer( GL_ARRAY_BUFFER_ARB, 0);
3662       }
3663    }
3664
3665    bool LockMesh(DisplaySystem displaySystem, Mesh mesh, MeshFeatures flags)
3666    {
3667       bool result = true;
3668
3669         return result;
3670    }
3671
3672    void FreeIndices(DisplaySystem displaySystem, OGLIndices oglIndices)
3673    {
3674       if(oglIndices)
3675       {
3676          if(oglIndices.buffer)
3677             GLDeleteBuffers(1, &oglIndices.buffer);
3678          delete oglIndices.indices;
3679          delete oglIndices;
3680       }
3681    }
3682
3683    void * AllocateIndices(DisplaySystem displaySystem, int nIndices, bool indices32bit)
3684    {
3685       OGLIndices oglIndices = OGLIndices { };
3686       if(oglIndices)
3687       {
3688          oglIndices.indices = (void *)(indices32bit ? new uint32[nIndices] : new uint16[nIndices]);
3689          GLGenBuffers( 1, &oglIndices.buffer);
3690          oglIndices.nIndices = nIndices;
3691       }
3692       return oglIndices;
3693    }
3694
3695    void UnlockIndices(DisplaySystem displaySystem, OGLIndices oglIndices, bool indices32bit, int nIndices)
3696    {
3697       if(vboAvailable)
3698       {
3699          GLBindBuffer( GL_ELEMENT_ARRAY_BUFFER_ARB, oglIndices.buffer);
3700          GLBufferData( indices32bit ? GL_UNSIGNED_INT : GL_UNSIGNED_SHORT, GL_ELEMENT_ARRAY_BUFFER_ARB, nIndices * (indices32bit ? sizeof(uint32) : sizeof(uint16)),
3701             oglIndices.indices, GL_STATIC_DRAW_ARB);
3702          GLBindBuffer( GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
3703       }
3704    }
3705
3706    uint16 * LockIndices(DisplaySystem displaySystem, OGLIndices oglIndices)
3707    {
3708
3709       return oglIndices.indices;
3710    }
3711
3712    void SelectMesh(Display display, Mesh mesh)
3713    {
3714       //Logf("SelectMesh\n");
3715
3716 #if !defined( __ANDROID__) && !defined(__APPLE__)
3717       if(display.display3D.mesh && glUnlockArraysEXT)
3718          glUnlockArraysEXT();
3719 #endif
3720       if(mesh)
3721       {
3722          OGLDisplay oglDisplay = display.driverData;
3723          OGLMesh oglMesh = mesh.data;
3724
3725          // *** Vertex Stream ***
3726          glEnableClientState(GL_VERTEX_ARRAY);
3727          if(!display.display3D.collectingHits && oglMesh)
3728          {
3729             GLBindBuffer(GL_ARRAY_BUFFER_ARB, oglMesh.vertices );
3730             glVertexPointer(3, mesh.flags.doubleVertices ? GL_DOUBLE : GL_FLOAT, 0, vboAvailable ? null : mesh.vertices);
3731
3732             // *** Normals Stream ***
3733             if(mesh.normals)
3734             {
3735                glEnableClientState(GL_NORMAL_ARRAY);
3736                GLBindBuffer(GL_ARRAY_BUFFER_ARB, oglMesh.normals);
3737                glNormalPointer(mesh.flags.doubleNormals ? GL_DOUBLE : GL_FLOAT, 0, vboAvailable ? null : mesh.normals);
3738             }
3739             else
3740                glDisableClientState(GL_NORMAL_ARRAY);
3741
3742             // *** Texture Coordinates Stream ***
3743             if(mesh.texCoords)
3744             {
3745                glEnableClientState(GL_TEXTURE_COORD_ARRAY);
3746                GLBindBuffer( GL_ARRAY_BUFFER_ARB, oglMesh.texCoords);
3747                glTexCoordPointer(2, GL_FLOAT, 0, vboAvailable ? null : mesh.texCoords);
3748             }
3749             else
3750                glDisableClientState(GL_TEXTURE_COORD_ARRAY);
3751
3752             // *** Color Stream ***
3753             if(mesh.colors)
3754             {
3755                glEnableClientState(GL_COLOR_ARRAY);
3756                GLBindBuffer( GL_ARRAY_BUFFER_ARB, oglMesh.colors);
3757                glColorPointer(4, GL_FLOAT, 0, vboAvailable ? null : mesh.colors);
3758             }
3759             else
3760                glDisableClientState(GL_COLOR_ARRAY);
3761
3762          }
3763          else
3764          {
3765             GLBindBuffer( GL_ARRAY_BUFFER_ARB, 0);
3766             glVertexPointer(3,mesh.flags.doubleVertices ? GL_DOUBLE : GL_FLOAT,0,mesh.vertices);
3767             if(mesh.normals && !display.display3D.collectingHits)
3768             {
3769                glEnableClientState(GL_NORMAL_ARRAY);
3770                glNormalPointer(mesh.flags.doubleNormals ? GL_DOUBLE : GL_FLOAT, 0, mesh.normals);
3771             }
3772             else
3773                glDisableClientState(GL_NORMAL_ARRAY);
3774             if(mesh.texCoords && !display.display3D.collectingHits)
3775             {
3776                glEnableClientState(GL_TEXTURE_COORD_ARRAY);
3777                glTexCoordPointer(2, GL_FLOAT, 0, mesh.texCoords);
3778             }
3779             else
3780                glDisableClientState(GL_TEXTURE_COORD_ARRAY);
3781             if(mesh.colors && !display.display3D.collectingHits)
3782             {
3783                glEnableClientState(GL_COLOR_ARRAY);
3784                glColorPointer(4, GL_FLOAT, 0, mesh.colors);
3785             }
3786             else
3787                glDisableClientState(GL_COLOR_ARRAY);
3788          }
3789
3790 #if !defined(__ANDROID__) && !defined(__APPLE__)
3791          if(glLockArraysEXT) glLockArraysEXT(0, mesh.nVertices);
3792 #endif
3793       }
3794       else
3795          GLBindBuffer(GL_ARRAY_BUFFER_ARB, 0);
3796    }
3797
3798    void DrawPrimitives(Display display, PrimitiveSingle * primitive, Mesh mesh)
3799    {
3800       OGLDisplay oglDisplay = display.driverData;
3801       //Logf("DrawPrimitives\n");
3802
3803       if(primitive->type.vertexRange)
3804          glDrawArrays(primitiveTypes[primitive->type.primitiveType], primitive->first, primitive->nVertices);
3805       else
3806       {
3807          //    *** Hoping the data won't be uploaded at all (Won't really work if another group of the mesh is using the mesh ) ***
3808          // HACK TO SPEED THINGS UP...
3809 #ifndef __ANDROID__
3810          GLBindBuffer(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
3811          if(primitive->nIndices < (mesh.nVertices >> 2) && !primitive->type.indices32bit)
3812          {
3813             int c;
3814             glBegin(primitiveTypes[primitive->type.primitiveType]);
3815             if(primitive->data)
3816             {
3817                OGLIndices oglIndices = primitive->data;
3818                MeshFeatures flags = mesh.flags;
3819                for(c = 0; c<primitive->nIndices; c++)
3820                {
3821                   uint16 index = ((uint16 *) oglIndices.indices)[c];
3822                   if(flags.normals) glNormal3fv((float *)&mesh.normals[index]);
3823                   if(flags.texCoords1) glTexCoord2fv((float *)&mesh.texCoords[index]);
3824                   if(flags.colors) glColor4fv((float *)&mesh.colors[index]);
3825                   glVertex3fv((float *)&mesh.vertices[index]);
3826                }
3827             }
3828             glEnd();
3829          }
3830          else
3831 #endif
3832          {
3833             OGLIndices oglIndices = primitive->data;
3834
3835             if(!display.display3D.collectingHits && vboAvailable && oglIndices)
3836             {
3837                GLBindBuffer(GL_ELEMENT_ARRAY_BUFFER_ARB, oglIndices.buffer);
3838                glDrawElements(primitiveTypes[primitive->type.primitiveType], primitive->nIndices,
3839                   primitive->type.indices32bit ? GL_UNSIGNED_INT : GL_UNSIGNED_SHORT, 0);
3840                GLBindBuffer(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
3841             }
3842             else
3843                glDrawElements(primitiveTypes[primitive->type.primitiveType], primitive->nIndices,
3844                   primitive->type.indices32bit ? GL_UNSIGNED_INT : GL_UNSIGNED_SHORT, oglIndices ? oglIndices.indices : primitive->indices);
3845          }
3846       }
3847    }
3848
3849    void PushMatrix(Display display)
3850    {
3851       glPushMatrix();
3852    }
3853
3854    void PopMatrix(Display display, bool setMatrix)
3855    {
3856       glPopMatrix();
3857    }
3858
3859    void SetTransform(Display display, Matrix transMatrix, bool viewSpace, bool useCamera)
3860    {
3861       Matrix matrix = transMatrix;
3862       Camera camera = useCamera ? display.display3D.camera : null;
3863
3864       if(viewSpace)
3865       {
3866          glLoadIdentity();
3867          glScaled(1.0/nearPlane, 1.0/nearPlane, -1.0/nearPlane);
3868       }
3869       else if(camera)
3870       {
3871          glTranslated(
3872             matrix.m[3][0] - camera.cPosition.x,
3873             matrix.m[3][1] - camera.cPosition.y,
3874             matrix.m[3][2] - camera.cPosition.z);
3875       }
3876       else
3877          glTranslated(
3878             matrix.m[3][0],
3879             matrix.m[3][1],
3880             matrix.m[3][2]);
3881
3882       matrix.m[3][0] = 0;
3883       matrix.m[3][1] = 0;
3884       matrix.m[3][2] = 0;
3885
3886       glMultMatrixd(matrix.array);
3887    }
3888 #endif
3889 }
3890
3891 public void UseSingleGLContext(bool useSingle)
3892 {
3893    useSingleGLContext = useSingle;
3894 }
3895
3896 default dllexport void * __attribute__((stdcall)) IS_GLGetContext(DisplaySystem displaySystem)
3897 {
3898    void * context = null;
3899    if(displaySystem)
3900    {
3901       OGLSystem system = displaySystem.driverData;
3902 #if defined(__WIN32__)
3903       return system.glrc;
3904 #else
3905       return system.glContext;
3906 #endif
3907    }
3908    return null;
3909 }
3910
3911 #endif