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