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__)
   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 #define _WIN32_WINNT 0x0500
  72 #include <windows.h>
  73 #endif
  74
  75 #if defined(__ANDROID__)
  76
  77 #include <GLES/gl.h>
  78 #include <EGL/egl.h>
  79
  80 #else
  81
  82 #include <GL/gl.h>
  83 #include <GL/glext.h>
  84
  85 #endif
  86
  87 import "Display"
  88
  89 #if defined(__unix__)
  90
  91 #ifndef __ANDROID__
  92 import "XInterface"
  93 #endif
  94
  95 #endif
  96
  97 #define glLoadMatrix glLoadMatrixd
  98 #define glMultMatrix glMultMatrixd
  99 #define glGetMatrix  glGetDoublev
 100 #define glTranslate glTranslated
 101 #define glScale glScaled
 102
 103 /*
 104 #define glVertex3v glVertex3dv
 105 #define glNormal3v glNormal3dv
 106 */
 107
 108 /*
 109 //#ifdef VERTEX_FORMAT_DOUBLE
 110
 111 #define glLoadMatrix glLoadMatrixd
 112 #define glMultMatrix glMultMatrixd
 113 #define glGetMatrix  glGetDoublev
 114 #define glVertex3v glVertex3dv
 115 #define glNormal3v glNormal3dv
 116 #define glTranslate glTranslated
 117 #define glScale glScaled
 118 //#define GL_VERTEX_FORMAT   GL_DOUBLE
 119
 120 #else
 121
 122 #define glLoadMatrix glLoadMatrixf
 123 #define glMultMatrix glMultMatrixf
 124 #define glGetMatrix  glGetFloatv
 125 #define glVertex3v glVertex3fv
 126 #define glNormal3v glNormal3fv
 127 #define glTranslate glTranslatef
 128 #define glScale glScalef
 129 //#define GL_VERTEX_FORMAT   GL_FLOAT
 130
 131 #endif
 132 */
 133
 134 #define GL_ARRAY_BUFFER_ARB            0x8892
 135 #define GL_ELEMENT_ARRAY_BUFFER_ARB    0x8893
 136 #define GL_STATIC_DRAW_ARB             0x88E4
 137 #define GL_LIGHT_MODEL_COLOR_CONTROL   0x81F8
 138 #define GL_SEPARATE_SPECULAR_COLOR     0x81FA
 139
 140 #define GL_MULTISAMPLE_ARB             0x809D
 141
 142 #if defined(__WIN32__)
 143
 144 #define WGL_SAMPLE_BUFFERS_ARB              0x2041
 145 #define WGL_SAMPLES_ARB                     0x2042
 146
 147 #define  WGL_WGLEXT_VERSION   1
 148 #define  WGL_FRONT_COLOR_BUFFER_BIT_ARB   0x00000001
 149 #define  WGL_BACK_COLOR_BUFFER_BIT_ARB   0x00000002
 150 #define  WGL_DEPTH_BUFFER_BIT_ARB   0x00000004
 151 #define  WGL_STENCIL_BUFFER_BIT_ARB   0x00000008
 152 #define  WGL_NUMBER_PIXEL_FORMATS_ARB   0x2000
 153 #define  WGL_DRAW_TO_WINDOW_ARB   0x2001
 154 #define  WGL_DRAW_TO_BITMAP_ARB   0x2002
 155 #define  WGL_ACCELERATION_ARB   0x2003
 156 #define  WGL_NEED_PALETTE_ARB   0x2004
 157 #define  WGL_NEED_SYSTEM_PALETTE_ARB   0x2005
 158 #define  WGL_SWAP_LAYER_BUFFERS_ARB   0x2006
 159 #define  WGL_SWAP_METHOD_ARB   0x2007
 160 #define  WGL_NUMBER_OVERLAYS_ARB   0x2008
 161 #define  WGL_NUMBER_UNDERLAYS_ARB   0x2009
 162 #define  WGL_TRANSPARENT_ARB   0x200A
 163 #define  WGL_TRANSPARENT_RED_VALUE_ARB   0x2037
 164 #define  WGL_TRANSPARENT_GREEN_VALUE_ARB   0x2038
 165 #define  WGL_TRANSPARENT_BLUE_VALUE_ARB   0x2039
 166 #define  WGL_TRANSPARENT_ALPHA_VALUE_ARB   0x203A
 167 #define  WGL_TRANSPARENT_INDEX_VALUE_ARB   0x203B
 168 #define  WGL_SHARE_DEPTH_ARB   0x200C
 169 #define  WGL_SHARE_STENCIL_ARB   0x200D
 170 #define  WGL_SHARE_ACCUM_ARB   0x200E
 171 #define  WGL_SUPPORT_GDI_ARB   0x200F
 172 #define  WGL_SUPPORT_OPENGL_ARB   0x2010
 173 #define  WGL_DOUBLE_BUFFER_ARB   0x2011
 174 #define  WGL_STEREO_ARB   0x2012
 175 #define  WGL_PIXEL_TYPE_ARB   0x2013
 176 #define  WGL_COLOR_BITS_ARB   0x2014
 177 #define  WGL_RED_BITS_ARB   0x2015
 178 #define  WGL_RED_SHIFT_ARB   0x2016
 179 #define  WGL_GREEN_BITS_ARB   0x2017
 180 #define  WGL_GREEN_SHIFT_ARB   0x2018
 181 #define  WGL_BLUE_BITS_ARB   0x2019
 182 #define  WGL_BLUE_SHIFT_ARB   0x201A
 183 #define  WGL_ALPHA_BITS_ARB   0x201B
 184 #define  WGL_ALPHA_SHIFT_ARB   0x201C
 185 #define  WGL_ACCUM_BITS_ARB   0x201D
 186 #define  WGL_ACCUM_RED_BITS_ARB   0x201E
 187 #define  WGL_ACCUM_GREEN_BITS_ARB   0x201F
 188 #define  WGL_ACCUM_BLUE_BITS_ARB   0x2020
 189 #define  WGL_ACCUM_ALPHA_BITS_ARB   0x2021
 190 #define  WGL_DEPTH_BITS_ARB   0x2022
 191 #define  WGL_STENCIL_BITS_ARB   0x2023
 192 #define  WGL_AUX_BUFFERS_ARB   0x2024
 193 #define  WGL_NO_ACCELERATION_ARB   0x2025
 194 #define  WGL_GENERIC_ACCELERATION_ARB   0x2026
 195 #define  WGL_FULL_ACCELERATION_ARB   0x2027
 196 #define  WGL_SWAP_EXCHANGE_ARB   0x2028
 197 #define  WGL_SWAP_COPY_ARB   0x2029
 198 #define  WGL_SWAP_UNDEFINED_ARB   0x202A
 199 #define  WGL_TYPE_RGBA_ARB   0x202B
 200 #define  WGL_TYPE_COLORINDEX_ARB   0x202C
 201 #define  ERROR_INVALID_PIXEL_TYPE_ARB   0x2043
 202 #define  ERROR_INCOMPATIBLE_DEVICE_CONTEXTS_ARB   0x2054
 203 #define  WGL_DRAW_TO_PBUFFER_ARB   0x202D
 204 #define  WGL_MAX_PBUFFER_PIXELS_ARB   0x202E
 205 #define  WGL_MAX_PBUFFER_WIDTH_ARB   0x202F
 206 #define  WGL_MAX_PBUFFER_HEIGHT_ARB   0x2030
 207 #define  WGL_PBUFFER_LARGEST_ARB   0x2033
 208 #define  WGL_PBUFFER_WIDTH_ARB   0x2034
 209 #define  WGL_PBUFFER_HEIGHT_ARB   0x2035
 210 #define  WGL_PBUFFER_LOST_ARB   0x2036
 211 #define  ERROR_INVALID_PIXEL_TYPE_EXT   0x2043
 212 #define  WGL_NUMBER_PIXEL_FORMATS_EXT   0x2000
 213 #define  WGL_DRAW_TO_WINDOW_EXT   0x2001
 214 #define  WGL_DRAW_TO_BITMAP_EXT   0x2002
 215 #define  WGL_ACCELERATION_EXT   0x2003
 216 #define  WGL_NEED_PALETTE_EXT   0x2004
 217 #define  WGL_NEED_SYSTEM_PALETTE_EXT   0x2005
 218 #define  WGL_SWAP_LAYER_BUFFERS_EXT   0x2006
 219 #define  WGL_SWAP_METHOD_EXT   0x2007
 220 #define  WGL_NUMBER_OVERLAYS_EXT   0x2008
 221 #define  WGL_NUMBER_UNDERLAYS_EXT   0x2009
 222 #define  WGL_TRANSPARENT_EXT   0x200A
 223 #define  WGL_TRANSPARENT_VALUE_EXT   0x200B
 224 #define  WGL_SHARE_DEPTH_EXT   0x200C
 225 #define  WGL_SHARE_STENCIL_EXT   0x200D
 226 #define  WGL_SHARE_ACCUM_EXT   0x200E
 227 #define  WGL_SUPPORT_GDI_EXT   0x200F
 228 #define  WGL_SUPPORT_OPENGL_EXT   0x2010
 229 #define  WGL_DOUBLE_BUFFER_EXT   0x2011
 230 #define  WGL_STEREO_EXT   0x2012
 231 #define  WGL_PIXEL_TYPE_EXT   0x2013
 232 #define  WGL_COLOR_BITS_EXT   0x2014
 233 #define  WGL_RED_BITS_EXT   0x2015
 234 #define  WGL_RED_SHIFT_EXT   0x2016
 235 #define  WGL_GREEN_BITS_EXT   0x2017
 236 #define  WGL_GREEN_SHIFT_EXT   0x2018
 237 #define  WGL_BLUE_BITS_EXT   0x2019
 238 #define  WGL_BLUE_SHIFT_EXT   0x201A
 239 #define  WGL_ALPHA_BITS_EXT   0x201B
 240 #define  WGL_ALPHA_SHIFT_EXT   0x201C
 241 #define  WGL_ACCUM_BITS_EXT   0x201D
 242 #define  WGL_ACCUM_RED_BITS_EXT   0x201E
 243 #define  WGL_ACCUM_GREEN_BITS_EXT   0x201F
 244 #define  WGL_ACCUM_BLUE_BITS_EXT   0x2020
 245 #define  WGL_ACCUM_ALPHA_BITS_EXT   0x2021
 246 #define  WGL_DEPTH_BITS_EXT   0x2022
 247 #define  WGL_STENCIL_BITS_EXT   0x2023
 248 #define  WGL_AUX_BUFFERS_EXT   0x2024
 249 #define  WGL_NO_ACCELERATION_EXT   0x2025
 250 #define  WGL_GENERIC_ACCELERATION_EXT   0x2026
 251 #define  WGL_FULL_ACCELERATION_EXT   0x2027
 252 #define  WGL_SWAP_EXCHANGE_EXT   0x2028
 253 #define  WGL_SWAP_COPY_EXT   0x2029
 254 #define  WGL_SWAP_UNDEFINED_EXT   0x202A
 255 #define  WGL_TYPE_RGBA_EXT   0x202B
 256 #define  WGL_TYPE_COLORINDEX_EXT   0x202C
 257 #define  WGL_DRAW_TO_PBUFFER_EXT   0x202D
 258 #define  WGL_MAX_PBUFFER_PIXELS_EXT   0x202E
 259 #define  WGL_MAX_PBUFFER_WIDTH_EXT   0x202F
 260 #define  WGL_MAX_PBUFFER_HEIGHT_EXT   0x2030
 261 #define  WGL_OPTIMAL_PBUFFER_WIDTH_EXT   0x2031
 262 #define  WGL_OPTIMAL_PBUFFER_HEIGHT_EXT   0x2032
 263 #define  WGL_PBUFFER_LARGEST_EXT   0x2033
 264 #define  WGL_PBUFFER_WIDTH_EXT   0x2034
 265 #define  WGL_PBUFFER_HEIGHT_EXT   0x2035
 266 #define  WGL_DEPTH_FLOAT_EXT   0x2040
 267 #define  WGL_SAMPLE_BUFFERS_3DFX   0x2060
 268 #define  WGL_SAMPLES_3DFX   0x2061
 269 #define  WGL_SAMPLE_BUFFERS_EXT   0x2041
 270 #define  WGL_SAMPLES_EXT   0x2042
 271 #define  WGL_GENLOCK_SOURCE_MULTIVIEW_I3D   0x2044
 272 #define  WGL_GENLOCK_SOURCE_EXTENAL_SYNC_I3D   0x2045
 273 #define  WGL_GENLOCK_SOURCE_EXTENAL_FIELD_I3D   0x2046
 274 #define  WGL_GENLOCK_SOURCE_EXTENAL_TTL_I3D   0x2047
 275 #define  WGL_GENLOCK_SOURCE_DIGITAL_SYNC_I3D   0x2048
 276 #define  WGL_GENLOCK_SOURCE_DIGITAL_FIELD_I3D   0x2049
 277 #define  WGL_GENLOCK_SOURCE_EDGE_FALLING_I3D   0x204A
 278 #define  WGL_GENLOCK_SOURCE_EDGE_RISING_I3D   0x204B
 279 #define  WGL_GENLOCK_SOURCE_EDGE_BOTH_I3D   0x204C
 280 #define  WGL_GAMMA_TABLE_SIZE_I3D   0x204E
 281 #define  WGL_GAMMA_EXCLUDE_DESKTOP_I3D   0x204F
 282 #define  WGL_DIGITAL_VIDEO_CURSOR_ALPHA_FRAMEBUFFER_I3D   0x2050
 283 #define  WGL_DIGITAL_VIDEO_CURSOR_ALPHA_VALUE_I3D   0x2051
 284 #define  WGL_DIGITAL_VIDEO_CURSOR_INCLUDED_I3D   0x2052
 285 #define  WGL_DIGITAL_VIDEO_GAMMA_CORRECTED_I3D   0x2053
 286 #define  WGL_ARB_buffer_region   1
 287 #define  WGL_ARB_extensions_string   1
 288 #define  WGL_ARB_pixel_format   1
 289 #define  WGL_ARB_make_current_read   1
 290 #define  WGL_ARB_pbuffer   1
 291 #define  WGL_EXT_display_color_table   1
 292 #define  WGL_EXT_extensions_string   1
 293 #define  WGL_EXT_make_current_read   1
 294 #define  WGL_EXT_pbuffer   1
 295 #define  WGL_EXT_pixel_format   1
 296 #define  WGL_EXT_swap_control   1
 297 #define  WGL_WGL_EXT_depth_float   1
 298 #define  WGL_WGL_3DFX_multisample   1
 299 #define  WGL_WGL_EXT_multisample   1
 300 #define  WGL_NV_allocate_memory   1
 301
 302 /*
 303 typedef void (APIENTRY * PFNGLACTIVETEXTUREARBPROC) (GLenum target);
 304 typedef void (APIENTRY * PFNGLMULTITEXCOORD2FARBPROC) (GLenum target, GLfloat s, GLfloat t);
 305 typedef void (APIENTRY * PFNGLCLIENTACTIVETEXTUREARBPROC) (GLenum target);
 306 typedef void (APIENTRY * PFNGLLOCKARRAYSEXTPROC) (GLint first, GLsizei count);
 307 typedef void (APIENTRY * PFNGLUNLOCKARRAYSEXTPROC) (void);
 308 */
 309
 310 /*
 311 typedef int (APIENTRY * PFNGLBINDBUFFERARBPROC) (GLenum target, GLuint buffer);
 312 typedef int (APIENTRY * PFNGLDELETEBUFFERSARBPROC) (GLsizei n, const GLuint *buffers);
 313 typedef int (APIENTRY * PFNGLGENBUFFERSARBPROC) (GLsizei n, GLuint *buffers);
 314 typedef int (APIENTRY * PFNGLBUFFERDATAARBPROC) (GLenum target, int size, const GLvoid *data, GLenum usage);
 315 */
 316 typedef int (APIENTRY * PFNWGLCHOOSEPIXELFORMATARBPROC) ();
 317 typedef void * (APIENTRY * PFNWGLCREATEPBUFFERARBPROC) (HDC hDC, int iPixelFormat, int iWidth, int iHeight, const int *piAttribList);
 318 typedef HDC (APIENTRY * PFNWGLGETPBUFFERDCARBPROC) (void * hPbuffer);
 319 typedef int (APIENTRY * PFNWGLRELEASEPBUFFERDCARBPROC) (void * hPbuffer, HDC hDC);
 320 typedef BOOL (APIENTRY * PFNWGLDESTROYPBUFFERARBPROC) (void * hPbuffer);
 321 typedef BOOL (APIENTRY * PFNWGLQUERYPBUFFERARBPROC) (void * hPbuffer, int iAttribute, int *piValue);
 322
 323 static PFNGLMAPBUFFERARBPROC glMapBufferARB = null;
 324 static PFNGLUNMAPBUFFERARBPROC glUnmapBufferARB = null;
 325 static PFNGLACTIVETEXTUREARBPROC glActiveTextureARB = null;
 326 static PFNGLMULTITEXCOORD2FARBPROC glMultiTexCoord2fARB = null;
 327 static PFNGLCLIENTACTIVETEXTUREARBPROC glClientActiveTextureARB = null;
 328 static PFNGLLOCKARRAYSEXTPROC glLockArraysEXT = null;
 329 static PFNGLUNLOCKARRAYSEXTPROC glUnlockArraysEXT = null;
 330 static PFNGLBLENDFUNCSEPARATEPROC glBlendFuncSeparate = null;
 331
 332 static PFNGLGENBUFFERSARBPROC glGenBuffersARB = null;
 333 static PFNGLBINDBUFFERARBPROC glBindBufferARB = null;
 334 static PFNGLBUFFERDATAARBPROC glBufferDataARB = null;
 335 static PFNGLDELETEBUFFERSARBPROC glDeleteBuffersARB = null;
 336 static PFNWGLCHOOSEPIXELFORMATARBPROC wglChoosePixelFormatARB = null;
 337 static PFNWGLGETEXTENSIONSSTRINGARBPROC wglGetExtensionsStringARB = null;
 338 static PFNWGLCREATEPBUFFERARBPROC wglCreatePbufferARB = null;
 339 static PFNWGLGETPBUFFERDCARBPROC wglGetPbufferDCARB = null;
 340 static PFNWGLQUERYPBUFFERARBPROC wglQueryPbufferARB = null;
 341 static PFNWGLDESTROYPBUFFERARBPROC wglDestroyPbufferARB = null;
 342 static PFNWGLRELEASEPBUFFERDCARBPROC wglReleasePbufferDCARB = null;
 343 static PFNWGLBINDTEXIMAGEARBPROC wglBindTexImageARB = null;
 344 static PFNWGLRELEASETEXIMAGEARBPROC wglReleaseTexImageARB = null;
 345
 346 #ifdef WGL_WGLEXT_PROTOTYPES
 347 extern BOOL WINAPI wglSwapIntervalEXT (int);
 348 extern int WINAPI wglGetSwapIntervalEXT (void);
 349 #endif /* WGL_WGLEXT_PROTOTYPES */
 350 typedef BOOL (WINAPI * PFNWGLSWAPINTERVALEXTPROC) (int interval);
 351 typedef int (WINAPI * PFNWGLGETSWAPINTERVALEXTPROC) (void);
 352
 353 static PFNWGLSWAPINTERVALEXTPROC wglSwapIntervalEXT = NULL;
 354
 355 #else
 356
 357 #if defined(__ANDROID__)
 358
 359 // OpenGL ES Porting Kit
 360
 361 #define glBindFramebuffer        glBindFramebufferOES
 362 #define glBindRenderbuffer       glBindRenderbufferOES
 363 #define GL_FRAMEBUFFER           GL_FRAMEBUFFER_OES
 364 #define GL_RENDERBUFFER          GL_RENDERBUFFER_OES
 365 #define glFramebufferTexture2D   glFramebufferTexture2DOES
 366 #define GL_COLOR_ATTACHMENT0     GL_COLOR_ATTACHMENT0_OES
 367 #define glGenFramebuffers        glGenFramebuffersOES
 368 #define glGenRenderbuffers       glGenRenderbuffersOES
 369 #define glDeleteFramebuffers     glDeleteFramebuffersOES
 370 #define glDeleteRenderbuffers    glDeleteRenderbuffersOES
 371
 372 #define GL_POLYGON_STIPPLE 0xFFFF
 373 #define GL_LINE_STIPPLE 0xFFFF
 374 #define GL_LINE 0xFFFF
 375 #define GL_FILL 0xFFFF
 376 #define GL_ALL_ATTRIB_BITS 0xFFFF
 377 #define GL_LIGHT_MODEL_LOCAL_VIEWER 0xFFFF
 378 #define glDrawElementsi(type, count, start)  glDrawElements(type, count, GL_UNSIGNED_SHORT, start)
 379
 380 #define GL_POLYGON      9
 381 #define GL_QUADS        7
 382
 383 #define glBufferDatai         glesBufferDatai
 384 #define glBufferDatad         glesBufferDatad
 385 #define glVertexPointeri      glesVertexPointeri
 386 #define glVertexPointerd      glesVertexPointerd
 387
 388 #define glRecti               glesRecti
 389 #define glBegin               glesBegin
 390 #define glTexCoord2i          glesTexCoord2i
 391 #define glVertex2i            glesVertex2i
 392 #define glTexCoord2d          glesTexCoord2d
 393 #define glVertex2d            glesVertex2d
 394 #define glTexCoord2f          glesTexCoord2f
 395 #define glVertex2f            glesVertex2f
 396 #define glEnd                 glesEnd
 397 #define glColor3f             glesColor3f
 398 #define glColor4ub            glesColor4ub
 399 #define glColor4fv            glesColor4fv
 400 #define glLineStipple         glesLineStipple
 401 #define glNormal3fv           glesNormal3fv
 402 #define glTexCoord2fv         glesTexCoord2fv
 403 #define glColorMaterial       glesColorMaterial
 404
 405 #define glLoadMatrixd         glesLoadMatrixd
 406 #define glMultMatrixd         glesMultMatrixd
 407 #define glFrustum             glesFrustum
 408 #define glOrtho               glesOrtho
 409 #define glScaled              glesScaled
 410 #define glTranslated          glesTranslated
 411 #define glRotated             glesRotated
 412 #define glVertex3d            glesVertex3d
 413 #define glVertex3f            glesVertex3f
 414 #define glVertex3fv           glesVertex3fv
 415 #define glLightModeli         glesLightModeli
 416
 417 #define APIENTRY
 418 //#define GL_QUADS              0
 419 #define GL_QUAD_STRIP         0
 420 #define GL_DOUBLE             0
 421 #define GL_UNSIGNED_INT       0
 422 //#define GL_FILL               0
 423 //#define GL_LINE               0
 424 //#define GL_LINE_STIPPLE       0
 425 #define GL_BGRA_EXT           0
 426 #define GL_UNPACK_ROW_LENGTH  0
 427 #define GL_UNPACK_SKIP_PIXELS 0
 428 #define GL_UNPACK_SKIP_ROWS   0
 429 #define GL_RGBA8              0
 430 #define GL_PACK_ROW_LENGTH    0
 431 #define GL_PACK_SKIP_ROWS     0
 432 #define GL_PACK_SKIP_PIXELS   0
 433
 434 static EGLDisplay eglDisplay;
 435 static EGLSurface eglSurface;
 436 static EGLContext eglContext;
 437 static int eglWidth, eglHeight;
 438
 439 static bool egl_init_display(ANativeWindow* window)
 440 {
 441    const EGLint attribs[] =
 442    {
 443       EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
 444       EGL_BLUE_SIZE, 8,
 445       EGL_GREEN_SIZE, 8,
 446       EGL_RED_SIZE, 8,
 447       EGL_DEPTH_SIZE, 24,
 448       /*EGL_SAMPLE_BUFFERS, 1,
 449       EGL_SAMPLES, 0, //2,*/
 450       EGL_NONE
 451    };
 452    EGLint w, h, dummy, format;
 453    EGLint numConfigs;
 454    EGLConfig config;
 455    EGLSurface surface;
 456    EGLContext context;
 457
 458    EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
 459    eglInitialize(display, 0, 0);
 460    eglChooseConfig(display, attribs, &config, 1, &numConfigs);
 461    eglGetConfigAttrib(display, config, EGL_NATIVE_VISUAL_ID, &format);
 462
 463    surface = eglCreateWindowSurface(display, config, window, null);
 464    context = eglCreateContext(display, config, null, null);
 465
 466    if(!eglMakeCurrent(display, surface, surface, context))
 467       return false;
 468
 469    eglQuerySurface(display, surface, EGL_WIDTH, &w);
 470    eglQuerySurface(display, surface, EGL_HEIGHT, &h);
 471
 472    eglDisplay = display;
 473    eglContext = context;
 474    eglSurface = surface;
 475    eglWidth = w;
 476    eglHeight = h;
 477
 478    glEnableClientState(GL_VERTEX_ARRAY);
 479    /*
 480    // Initialize GL state.
 481    glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
 482    glEnable(GL_CULL_FACE);
 483    glShadeModel(GL_SMOOTH);
 484    glDisable(GL_DEPTH_TEST);
 485    */
 486    glDisable(GL_CULL_FACE);
 487    glDisable(GL_DEPTH_TEST);
 488
 489    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 490    glEnable(GL_BLEND);
 491
 492    glMatrixMode(GL_MODELVIEW);
 493    glScalef(1.0f, 1.0f, -1.0f);
 494    glMatrixMode(GL_PROJECTION);
 495    glShadeModel(GL_FLAT);
 496
 497    glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
 498    glFogi(GL_FOG_MODE, GL_EXP);
 499    glFogf(GL_FOG_DENSITY, 0);
 500    glEnable(GL_NORMALIZE);
 501    glDepthFunc(GL_LESS);
 502    glClearDepth(1.0);
 503    glDisable(GL_MULTISAMPLE_ARB);
 504
 505    glViewport(0,0,w,h);
 506    glLoadIdentity();
 507    glOrtho(0,w,h,0,0.0,1.0);
 508    return true;
 509 }
 510
 511 static void egl_term_display()
 512 {
 513    if(stippleTexture)
 514    {
 515       glDeleteTextures(1, (int *)&stippleTexture);
 516       stippleTexture = 0;
 517    }
 518    if(eglDisplay != EGL_NO_DISPLAY)
 519    {
 520       eglMakeCurrent(eglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
 521       if(eglContext != EGL_NO_CONTEXT)
 522          eglDestroyContext(eglDisplay, eglContext);
 523       if(eglSurface != EGL_NO_SURFACE)
 524          eglDestroySurface(eglDisplay, eglSurface);
 525       eglTerminate(eglDisplay);
 526    }
 527    eglDisplay = EGL_NO_DISPLAY;
 528    eglContext = EGL_NO_CONTEXT;
 529    eglSurface = EGL_NO_SURFACE;
 530 }
 531
 532 // OpenGL Immediate Mode Porting Kit
 533 static int beginCount;
 534 static int vertexCount;
 535 static int normalCount;
 536 static float *vertexPointer;
 537 static float *normalPointer;
 538 static GLenum beginMode;
 539 static unsigned int beginBufferSize, normalBufferSize;
 540 static int numVertexCoords = 2;
 541
 542 void glesRecti(int a, int b, int c, int d)
 543 {
 544    glBegin(GL_QUADS);
 545    glVertex2i(a, b);
 546    glVertex2i(a, d);
 547    glVertex2i(c, d);
 548    glVertex2i(c, b);
 549    glEnd();
 550 }
 551
 552 void glesBegin(GLenum mode)
 553 {
 554    beginMode = mode;
 555    beginCount = 0;
 556    vertexCount = 0;
 557    if(!vertexPointer)
 558    {
 559       normalBufferSize = beginBufferSize = 1024;  // default number of vertices
 560       vertexPointer = new float[beginBufferSize * 5];
 561       normalPointer = new float[normalBufferSize * 3];
 562    }
 563 }
 564
 565 void glesTexCoord2f(float x, float y)
 566 {
 567    int count = vertexCount;
 568
 569    if(vertexCount + numVertexCoords > beginBufferSize)
 570    {
 571       beginBufferSize = beginBufferSize + beginBufferSize/2;
 572       vertexPointer = renew vertexPointer float[beginBufferSize * 5];
 573    }
 574
 575    vertexPointer[count*(2+numVertexCoords)  ] = x;
 576    vertexPointer[count*(2+numVertexCoords)+1] = y;
 577    count++;
 578
 579    if(beginMode == GL_QUADS && ((beginCount % 4) == 3))
 580    {
 581       vertexPointer[count*(2+numVertexCoords)  ] = vertexPointer[(count-4)*(2+numVertexCoords)];
 582       vertexPointer[count*(2+numVertexCoords)+1] = vertexPointer[(count-4)*(2+numVertexCoords)+1];
 583       count++;
 584       vertexPointer[count*(2+numVertexCoords)  ] = vertexPointer[(count-3)*(2+numVertexCoords)];
 585       vertexPointer[count*(2+numVertexCoords)+1] = vertexPointer[(count-3)*(2+numVertexCoords)+1];
 586       count++;
 587    }
 588 }
 589 void glesTexCoord2i(int x, int y)       { glesTexCoord2f((float)x, (float)y); }
 590 void glesTexCoord2d(double x, double y) { glesTexCoord2f((float)x, (float)y); }
 591 void glesTexCoord2fv(float * a)         { glesTexCoord2f(a[0], a[1]); }
 592
 593 void glesVertex2f(float x, float y)
 594 {
 595    numVertexCoords = 2;
 596    if(vertexCount + 4 > beginBufferSize)
 597    {
 598       beginBufferSize = beginBufferSize + beginBufferSize/2;
 599       vertexPointer = renew vertexPointer float[beginBufferSize * 5];
 600    }
 601
 602    vertexPointer[vertexCount*4+2] = x;
 603    vertexPointer[vertexCount*4+3] = y;
 604    vertexCount++;
 605
 606    if(beginMode == GL_QUADS && ((beginCount % 4) == 3))
 607    {
 608       vertexPointer[vertexCount*4+2] = vertexPointer[(vertexCount-4)*4+2];
 609       vertexPointer[vertexCount*4+3] = vertexPointer[(vertexCount-4)*4+3];
 610       vertexCount++;
 611       vertexPointer[vertexCount*4+2] = vertexPointer[(vertexCount-3)*4+2];
 612       vertexPointer[vertexCount*4+3] = vertexPointer[(vertexCount-3)*4+3];
 613       vertexCount++;
 614    }
 615    beginCount++;
 616 }
 617 void glesVertex2i(int x, int y)         { glesVertex2f((float)x, (float)y); }
 618 void glesVertex2d(double x, double y)   { glesVertex2f((float)x, (float)y); }
 619
 620 void glesEnd(void)
 621 {
 622    int mode = beginMode;
 623    if(mode == GL_QUADS)        mode = GL_TRIANGLES;
 624    else if(mode == GL_POLYGON) mode = GL_TRIANGLE_FAN;
 625    GLSelectVBO(0);
 626    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 627    glTexCoordPointer(numVertexCoords, GL_FLOAT, (numVertexCoords+2)*sizeof(float),vertexPointer);
 628    glVertexPointer  (numVertexCoords, GL_FLOAT, (numVertexCoords+2)*sizeof(float),vertexPointer+2);
 629    if(normalCount && normalCount == vertexCount)
 630    {
 631       glEnableClientState(GL_NORMAL_ARRAY);
 632       glNormalPointer  (GL_FLOAT, 3*sizeof(float),normalPointer);
 633    }
 634
 635    glDrawArrays(mode, 0, vertexCount);
 636    if(normalCount)
 637       glDisableClientState(GL_NORMAL_ARRAY);
 638    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
 639    normalCount = 0;
 640 }
 641
 642 // Vertex Pointer
 643 static float *floatVPBuffer = null;
 644 static short *shortVPBuffer = null;
 645 static unsigned int shortVPSize = 0, floatVPSize = 0;
 646
 647 // Buffer Data
 648 //static float *floatVPBuffer = null;  // For floats we reuse floatVPBuffer
 649 static unsigned short *shortBDBuffer = null;
 650 static unsigned int shortBDSize = 0/*, floatVPSize = 0*/;
 651
 652 void glesVertexPointeri(int numCoords, int stride, int *pointer, int numVertices)
 653 {
 654    if(pointer)
 655    {
 656       int i;
 657       if(numVertices*numCoords > shortVPSize)
 658       {
 659          shortVPSize = numVertices*numCoords;
 660          shortVPBuffer = renew shortVPBuffer short[shortVPSize];
 661       }
 662       for(i = 0; i < numVertices*numCoords; i++)
 663          shortVPBuffer[i] = (short)pointer[i];
 664       glVertexPointer(numCoords, GL_SHORT, stride, shortVPBuffer);
 665    }
 666    else
 667       glVertexPointer(numCoords, GL_SHORT, stride, 0);
 668 }
 669
 670 void glesVertexPointerd(int numCoords, int stride, double *pointer, int numVertices)
 671 {
 672    if(pointer)
 673    {
 674       int i;
 675       if(numVertices*numCoords > floatVPSize)
 676       {
 677          floatVPSize = numVertices*numCoords;
 678          floatVPBuffer = renew floatVPBuffer float[floatVPSize];
 679       }
 680       for(i = 0; i < numVertices*numCoords; i++)
 681          floatVPBuffer[i] = (float)pointer[i];
 682       glVertexPointer(numCoords, GL_FLOAT, stride, floatVPBuffer);
 683    }
 684    else
 685       glVertexPointer(numCoords, GL_FLOAT, stride, 0);
 686 }
 687
 688 void glesTexReuseIntVP(int numCoords)
 689 {
 690    glTexCoordPointer(numCoords, GL_SHORT, 0, floatVPBuffer);
 691 }
 692
 693 void glesTexReuseDoubleVP(int numCoords)
 694 {
 695    glTexCoordPointer(numCoords, GL_FLOAT, 0, floatVPBuffer);
 696 }
 697
 698 void glesColor3f( float r, float g, float b )
 699 {
 700    glColor4f(r, g, b, 1.0f);
 701 }
 702
 703 void glesColor4ub(unsigned char r, unsigned char g, unsigned char b, unsigned char a)
 704 {
 705    glColor4f(r/255.0f, g/255.0f, b/255.0f, a/255.0f);
 706 }
 707
 708 void glesColor4fv(float * a)
 709 {
 710    glColor4f(a[0], a[1], a[2], a[3]);
 711 }
 712
 713 void glesBufferDatad(int target, int size, void * data, int usage)
 714 {
 715    int numElems = size/sizeof(double);
 716    double * dblPtr = (double *)data;
 717    int i;
 718    if (numElems > floatVPSize)
 719    {
 720       floatVPSize = numElems;
 721       floatVPBuffer = renew floatVPBuffer float[floatVPSize];
 722    }
 723    for (i=0; i< numElems; i++)
 724       floatVPBuffer[i] = (float)dblPtr[i];
 725
 726    glBufferData(target, numElems*sizeof(float), floatVPBuffer, usage);
 727 }
 728
 729 void glesBufferDatai(int target, int size, void * data, int usage)
 730 {
 731    int numElems = size/sizeof(unsigned int);
 732    unsigned int * pointer = (unsigned int *)data;
 733    int i;
 734    if (numElems > shortBDSize)
 735    {
 736       shortBDSize = numElems;
 737       shortBDBuffer = renew shortBDBuffer uint16[shortBDSize];
 738    }
 739    for (i=0; i< numElems; i++)
 740       shortBDBuffer[i] = (unsigned short)pointer[i];
 741
 742    glBufferData(target, numElems*sizeof(unsigned short), shortBDBuffer, usage);
 743 }
 744
 745 /// *** These might require an implementation to get things working ***
 746 void glesLoadMatrixd( double * i )
 747 {
 748    float m[16] =
 749    {
 750       (float)i[0],(float)i[1],(float)i[2],(float)i[3],
 751       (float)i[4],(float)i[5],(float)i[6],(float)i[7],
 752       (float)i[8],(float)i[9],(float)i[10],(float)i[11],
 753       (float)i[12],(float)i[13],(float)i[14],(float)i[15]
 754    };
 755    glLoadMatrixf(m);
 756 }
 757
 758 void glesOrtho( double l, double r, double b, double t, double n, double f )
 759 {
 760    float matrix[4][4] =
 761    {
 762       { (float)(2 / (r - l)), 0, 0, 0 },
 763       { 0, (float)(2 / (t - b)), 0, 0 },
 764       { 0, 0, (float)(-2 / (f - n)), 0 },
 765       { (float)(-(r + l) / (r - l)), (float)(-(t + b) / (t - b)), (float)(-(f + n) / (f - n)), 1 }
 766    };
 767    glMultMatrixf((float *)matrix);
 768 }
 769
 770 void glesRotated( double a, double b, double c, double d ) { glRotatef((float)a, (float)b, (float)c, (float)d); }
 771 void glesScaled( double a, double b, double c ) { glScalef((float)a, (float)b, (float)c); }
 772 void glesTranslated( double a, double b, double c ) { glTranslatef((float)a, (float)b, (float)c); }
 773
 774 void glesMultMatrixd( double * i )
 775 {
 776    float m[16] =
 777    {
 778       (float)i[0], (float)i[1], (float)i[2], (float)i[3],
 779       (float)i[4], (float)i[5], (float)i[6], (float)i[7],
 780       (float)i[8], (float)i[9], (float)i[10], (float)i[11],
 781       (float)i[12], (float)i[13], (float)i[14], (float)i[15]
 782    };
 783    glMultMatrixf(m);
 784 }
 785
 786 // Need to do these...
 787 void glesVertex3f( float x, float y, float z )
 788 {
 789    numVertexCoords = 3;
 790    if(vertexCount + 4 > beginBufferSize)
 791    {
 792       beginBufferSize = beginBufferSize + beginBufferSize/2;
 793       vertexPointer = renew vertexPointer float[beginBufferSize * 5];
 794    }
 795
 796    vertexPointer[vertexCount*5+2] = x;
 797    vertexPointer[vertexCount*5+3] = y;
 798    vertexPointer[vertexCount*5+4] = z;
 799    vertexCount++;
 800
 801    if(beginMode == GL_QUADS && ((beginCount % 4) == 3))
 802    {
 803       vertexPointer[vertexCount*5+2] = vertexPointer[(vertexCount-4)*5+2];
 804       vertexPointer[vertexCount*5+3] = vertexPointer[(vertexCount-4)*5+3];
 805       vertexPointer[vertexCount*5+4] = vertexPointer[(vertexCount-4)*5+4];
 806       vertexCount++;
 807       vertexPointer[vertexCount*5+2] = vertexPointer[(vertexCount-3)*5+2];
 808       vertexPointer[vertexCount*5+3] = vertexPointer[(vertexCount-3)*5+3];
 809       vertexPointer[vertexCount*5+4] = vertexPointer[(vertexCount-3)*5+4];
 810       vertexCount++;
 811    }
 812    beginCount++;
 813 }
 814
 815 void glesVertex3d( double x, double y, double z )  { glesVertex3f((float)x, (float)y, (float)z); }
 816 void glesVertex3fv( float* coords )                { glesVertex3f(coords[0], coords[1], coords[2]); }
 817
 818 void glesNormal3f(float x, float y, float z)
 819 {
 820    normalCount = vertexCount;
 821    if(vertexCount + 4 > normalBufferSize)
 822    {
 823       normalBufferSize = normalBufferSize + normalBufferSize/2;
 824       normalPointer = renew normalPointer float[normalBufferSize * 2];
 825    }
 826
 827    normalPointer[normalCount*3+0] = x;
 828    normalPointer[normalCount*3+1] = y;
 829    normalPointer[normalCount*3+2] = z;
 830    normalCount++;
 831
 832    if(beginMode == GL_QUADS && ((beginCount % 4) == 3))
 833    {
 834       normalPointer[normalCount*3+0] = normalPointer[(normalCount-4)*3+0];
 835       normalPointer[normalCount*3+1] = normalPointer[(normalCount-4)*3+1];
 836       normalPointer[normalCount*3+2] = normalPointer[(normalCount-4)*3+2];
 837       normalCount++;
 838       normalPointer[normalCount*3+0] = normalPointer[(normalCount-3)*3+0];
 839       normalPointer[normalCount*3+1] = normalPointer[(normalCount-3)*3+1];
 840       normalPointer[normalCount*3+2] = normalPointer[(normalCount-3)*3+2];
 841       normalCount++;
 842    }
 843 }
 844 void glesNormal3fd(double x, double y, double z)         { glesNormal3f((float)x, (float)y, (float)z); }
 845 void glesNormal3fv(float * coords)                       { glesNormal3f(coords[0], coords[1], coords[2]); }
 846
 847 void glesColorMaterial(int a, int b)
 848 {
 849    PrintLn("glColorMaterial stub");
 850 }
 851
 852 void glesTerminate()
 853 {
 854    delete vertexPointer;
 855    beginBufferSize = 0;
 856
 857    delete floatVPBuffer;
 858    shortVPSize = 0;
 859
 860    delete shortVPBuffer;
 861    floatVPSize = 0;
 862
 863    delete shortBDBuffer;
 864    shortBDSize = 0;
 865 }
 866
 867 static int stippleTexture;
 868 static bool stippleEnabled;
 869
 870 void glesLineStipple( int i, unsigned short j )
 871 {
 872    uint texture[1*16];
 873    int c;
 874    int x;
 875    for(x = 0; x < 16; x++)
 876    {
 877       bool v = (j & (1 << x)) != 0;
 878       texture[x] = v ? 0xFFFFFFFF : 0;
 879    }
 880    if(!stippleTexture)
 881       glGenTextures(1, &stippleTexture);
 882    glBindTexture(GL_TEXTURE_2D, stippleTexture);
 883    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 16, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, texture);
 884    glEnable(GL_TEXTURE_2D);
 885    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 886    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 887    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
 888    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 889    glMatrixMode(GL_TEXTURE);
 890    glLoadIdentity();
 891    //glTranslated(1.0/backAttrib->texW/2.0f, 1.0/backAttrib->texH/2.0f, 0.0f);
 892    glScaled(i/16.0, 1, 1.0f);
 893    glTranslated(0.5, 0.5, 0);
 894    glMatrixMode(GL_PROJECTION);
 895 }
 896
 897 void glesFrustum( double l, double r, double b, double t, double n, double f )
 898 {
 899    float A = (float)((r + l) / (r - l));
 900    float B = (float)((t + b) / (t - b));
 901    float C = (float)(-(f + n) / (f - n));
 902    float D = (float)(-2*f*n/(f-n));
 903    float matrix[4][4] =
 904    {
 905       { (float)(2*n / (r - l)), 0, 0, 0 },
 906       { 0, (float)(2*n / (t - b)), 0, 0 },
 907       { A, B,             C,-1 },
 908       { 0, 0,             D, 0 }
 909    };
 910    glMultMatrixf((float *)matrix);
 911 }
 912
 913 void glesLightModeli( unsigned int pname, int param )
 914 {
 915    if(pname == GL_LIGHT_MODEL_TWO_SIDE)
 916       glLightModelf(GL_LIGHT_MODEL_TWO_SIDE, param);
 917 }
 918
 919 void glClearDepth( double depth ) { glClearDepthf((float)depth); }
 920 void glFogi( unsigned int pname, int param ) { }
 921 void glPolygonMode( unsigned int i, unsigned int j ) { }
 922
 923
 924 // *** Picking won't be supported for now ***
 925 void glPushName( unsigned int i ) { }
 926 void glLoadName( unsigned int i ) { }
 927 void glPopName() { }
 928
 929 // Probably replace by regular glBlendFunc ...
 930 void glBlendFuncSeparate(int a, int b, int c, int d)
 931 {
 932    glBlendFunc(a, b);
 933 }
 934
 935 // For direct pixel blitting...
 936 void glRasterPos2d(double a, double b) { }
 937 void glPixelZoom(float a, float b) { }
 938 void glDrawPixels(int a, int b, int c, int d, void * e) { }
 939
 940 #else
 941
 942 /* Non OpenGL ES friendly stuff
 943 #undef GL_UNSIGNED_INT
 944 #undef GL_DOUBLE
 945 #undef GL_INT
 946 //#undef GL_POLYGON
 947 //#undef GL_QUADS
 948 #undef GL_QUAD_STRIP
 949 #undef GL_POLYGON_STIPPLE
 950 #undef GL_LINE_STIPPLE
 951 #undef GL_LINE
 952 #undef GL_FILL
 953 #undef GL_ALL_ATTRIB_BITS
 954 #undef GL_LIGHT_MODEL_LOCAL_VIEWER
 955 */
 956
 957 #endif
 958
 959 #if !defined(__APPLE__)
 960 void (APIENTRY * glBindBufferARB) (GLenum target, GLuint buffer);
 961 void (APIENTRY * glGenBuffersARB) (GLsizei n, GLuint *buffers);
 962 void (APIENTRY * glDeleteBuffersARB) (GLsizei n, const GLuint *buffers);
 963 void (APIENTRY * glBufferDataARB) (GLenum target, int size, const GLvoid *data, GLenum usage);
 964 #endif
 965
 966 #endif
 967
 968 static int currentVertexBuffer;
 969
 970 bool GLSelectVBO(uint vbo)
 971 {
 972    if(currentVertexBuffer != vbo)
 973    {
 974       GLBindBuffer(GL_ARRAY_BUFFER, vbo);
 975       currentVertexBuffer = vbo;
 976       return true;
 977    }
 978    return false;
 979 }
 980
 981 void GLBindBuffer(int target, uint buffer)
 982 {
 983 #ifdef __ANDROID__
 984    glBindBuffer(target, buffer);
 985 #else
 986    glBindBufferARB(target, buffer);
 987 #endif
 988 }
 989
 990 static int displayWidth, displayHeight;
 991
 992 #define GL_CLAMP_TO_EDGE 0x812F
 993
 994 static bool useSingleGLContext = false;
 995 class OGLDisplay : struct
 996 {
 997 #if defined(__WIN32__)
 998    HDC hdc;
 999    HGLRC glrc;
1000
1001    HBITMAP memBitmap;
1002    HDC memDC;
1003    byte * picture;
1004    uint stride;
1005    void * pBuffer;
1006    /*
1007    int imageBuffers[2];
1008    byte * pboMemory1, * pboMemory2;
1009    */
1010 #else
1011    GLXContext glContext;
1012
1013    Pixmap pixmap;
1014    XShmSegmentInfo shminfo;
1015    XImage * image;
1016    XShmSegmentInfo shminfoShape;
1017    XImage * shapeImage;
1018    byte * picture;
1019    uint stride;
1020    GLXPbuffer pBuffer;
1021    X11Picture windowPicture;
1022    X11Picture pixmapPicture;
1023    Pixmap shapePixmap;
1024    X11Picture shapePicture;
1025 #endif
1026
1027    ColorAlpha * flippingBuffer;
1028    int flipBufH, flipBufW;
1029    bool depthWrite;
1030    int x, y;
1031 };
1032
1033 class OGLSystem : struct
1034 {
1035 #if defined(__WIN32__)
1036    PIXELFORMATDESCRIPTOR pfd;
1037    int format;
1038    HDC hdc;
1039    HGLRC glrc;
1040    HWND hwnd;
1041 #else
1042    XVisualInfo * visualInfo;
1043    GLXContext glContext;
1044    Pixmap dummyPixmap;
1045    GLXPixmap dummyGLXPixmap;
1046 #endif
1047    bool loadingFont;
1048 };
1049
1050 class OGLSurface : struct
1051 {
1052    Font font;
1053    bool opaqueText;
1054    int xOffset;
1055    bool writingText;
1056
1057    float foreground[4], background[4], bitmapMult[4];
1058 } OGLSurface;
1059
1060 class OGLMesh : struct
1061 {
1062    int vertices;
1063    int normals;
1064    int texCoords;
1065    int texCoords2;
1066    int colors;
1067 };
1068
1069 class OGLIndices : struct
1070 {
1071    uint16 * indices;
1072    int buffer;
1073    int nIndices;
1074 };
1075
1076 #if !defined(ECERE_NO3D) && !defined(ECERE_VANILLA)
1077 static int primitiveTypes[RenderPrimitiveType] =
1078 {
1079    GL_POINTS, GL_LINES, GL_TRIANGLES, GL_TRIANGLE_STRIP, GL_TRIANGLE_FAN, GL_QUADS, GL_QUAD_STRIP, GL_LINE_STRIP
1080 };
1081 #endif
1082
1083 int current;
1084 void * previous;
1085
1086 class OpenGLDisplayDriver : DisplayDriver
1087 {
1088    class_property(name) = "OpenGL";
1089
1090    bool LockSystem(DisplaySystem displaySystem)
1091    {
1092       OGLSystem oglSystem = displaySystem.driverData;
1093       if(useSingleGLContext) return true;
1094    #if defined(__WIN32__)
1095       wglMakeCurrent(oglSystem.hdc, oglSystem.glrc);
1096    #elif defined(__unix__)
1097       //if(previous) return true;
1098       // printf("Making SYSTEM current\n");
1099 /*#if defined(__APPLE__)
1100       //glXMakeCurrent(xGlobalDisplay, displaySystem.window, oglSystem.glContext);
1101 #else*/
1102       #if defined(__ANDROID__)
1103       #else
1104       glXMakeCurrent(xGlobalDisplay, oglSystem.dummyGLXPixmap /*displaySystem.window /-*DefaultRootWindow(xGlobalDisplay)*/, oglSystem.glContext);
1105       #endif
1106 //#endif
1107       //previous = oglSystem.glContext;
1108    #endif
1109       return true;
1110    }
1111
1112    void UnlockSystem(DisplaySystem displaySystem)
1113    {
1114       if(useSingleGLContext) return;
1115    #if defined(__WIN32__)
1116       wglMakeCurrent(null, null);
1117    #elif defined(__unix__)
1118       // printf("Making NULL current\n");
1119       #if defined(__ANDROID__)
1120       #else
1121       glXMakeCurrent(xGlobalDisplay, None, null);
1122       #endif
1123       // previous = null;
1124    #endif
1125    }
1126
1127    bool Lock(Display display)
1128    {
1129       OGLDisplay oglDisplay = display.driverData;
1130       OGLSystem oglSystem = display.displaySystem.driverData;
1131
1132       if(useSingleGLContext) return true;
1133    #if defined(__WIN32__)
1134       wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
1135    #elif defined(__unix__)
1136       // if(previous) glXMakeCurrent(xGlobalDisplay, None, null);
1137       // printf("   Making DISPLAY current\n");
1138       #if defined(__ANDROID__)
1139       #else
1140       glXMakeCurrent(xGlobalDisplay, (int)display.window, oglDisplay.glContext);
1141       #endif
1142    #endif
1143       return true;
1144    }
1145
1146    void Unlock(Display display)
1147    {
1148       if(useSingleGLContext) return;
1149       //printf("   Making NULL current\n");
1150       //glXMakeCurrent(xGlobalDisplay, None, null);
1151       // if(previous)
1152          LockSystem(display.displaySystem);
1153    }
1154
1155    void DestroyDisplay(Display display)
1156    {
1157       OGLDisplay oglDisplay = display.driverData;
1158
1159       if(oglDisplay)
1160       {
1161    #if defined(__WIN32__)
1162          wglMakeCurrent( null, null );
1163
1164          if(oglDisplay.glrc)
1165             wglDeleteContext(oglDisplay.glrc);
1166
1167          if(oglDisplay.hdc && oglDisplay.pBuffer)
1168             wglReleasePbufferDCARB(oglDisplay.pBuffer, oglDisplay.hdc);
1169
1170          if(oglDisplay.pBuffer)
1171             wglDestroyPbufferARB(oglDisplay.pBuffer);
1172
1173          if(oglDisplay.hdc)
1174             ReleaseDC(display.window, oglDisplay.hdc);
1175
1176          if(oglDisplay.memDC) DeleteDC(oglDisplay.memDC);
1177          if(oglDisplay.memBitmap) DeleteObject(oglDisplay.memBitmap);
1178
1179    #elif defined(__unix__)
1180       #if defined(__ANDROID__)
1181       #else
1182          if(oglDisplay.shapePixmap)
1183             XFreePixmap(xGlobalDisplay, oglDisplay.shapePixmap);
1184          if(oglDisplay.pixmap)
1185             XFreePixmap(xGlobalDisplay, oglDisplay.pixmap);
1186          if(oglDisplay.image)
1187          {
1188             if(oglDisplay.shminfoShape.shmid != -1)
1189             {
1190                XShmDetach(xGlobalDisplay, &oglDisplay.shminfo);
1191                if(oglDisplay.shminfo.shmaddr != (void *)-1)
1192                   shmdt(oglDisplay.shminfo.shmaddr);
1193                shmctl(oglDisplay.shminfo.shmid, IPC_RMID, 0);
1194             }
1195          }
1196          if(oglDisplay.shapeImage)
1197          {
1198             if(oglDisplay.shminfoShape.shmid != -1)
1199             {
1200                XShmDetach(xGlobalDisplay, &oglDisplay.shminfoShape);
1201                if(oglDisplay.shminfoShape.shmaddr != (void *)-1)
1202                   shmdt(oglDisplay.shminfoShape.shmaddr);
1203                shmctl(oglDisplay.shminfoShape.shmid, IPC_RMID, 0);
1204             }
1205             XDestroyImage(oglDisplay.shapeImage);
1206             oglDisplay.shapeImage = None;
1207          }
1208
1209          glXMakeCurrent(xGlobalDisplay, None, null);
1210
1211          if(oglDisplay.glContext)
1212             glXDestroyContext(xGlobalDisplay, oglDisplay.glContext);
1213       #endif
1214    #endif
1215          delete oglDisplay.flippingBuffer;
1216          delete oglDisplay;
1217          display.driverData = null;
1218       }
1219    }
1220
1221    bool CreateDisplaySystem(DisplaySystem displaySystem)
1222    {
1223       bool result = false;
1224       OGLSystem oglSystem = displaySystem.driverData = OGLSystem { };
1225
1226    #ifdef __WIN32__
1227       oglSystem.hwnd = CreateWindow("static", null, 0,0,0,0,0,null,null,null,null);
1228
1229       oglSystem.hdc = GetDC(oglSystem.hwnd);
1230       if(oglSystem.hdc)
1231       {
1232
1233          oglSystem.pfd.nSize = (short)sizeof(oglSystem.pfd);
1234          oglSystem.pfd.nVersion = 1;
1235          oglSystem.pfd.dwFlags = PFD_DRAW_TO_WINDOW /*PFD_DRAW_TO_BITMAP*/ | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
1236          oglSystem.pfd.iPixelType = PFD_TYPE_RGBA;
1237          oglSystem.pfd.cColorBits = 24;
1238          oglSystem.pfd.cAlphaBits = 8;
1239          oglSystem.pfd.cDepthBits = 24;
1240          oglSystem.pfd.iLayerType = PFD_MAIN_PLANE;
1241
1242          oglSystem.format = ChoosePixelFormat(oglSystem.hdc, &oglSystem.pfd);
1243          DescribePixelFormat(oglSystem.hdc, oglSystem.format, sizeof(oglSystem.pfd), &oglSystem.pfd);
1244
1245          if(oglSystem.pfd.cColorBits > 8)
1246          {
1247             SetPixelFormat(oglSystem.hdc, oglSystem.format, &oglSystem.pfd);
1248             oglSystem.glrc = wglCreateContext(oglSystem.hdc);
1249             if(oglSystem.glrc)
1250             {
1251                wglMakeCurrent(oglSystem.hdc, oglSystem.glrc);
1252
1253                  // Get Pointers To The GL Functions
1254                glActiveTextureARB = (void *) wglGetProcAddress("glActiveTextureARB");
1255                glMultiTexCoord2fARB = (void *) wglGetProcAddress("glMultiTexCoord2fARB");
1256                glClientActiveTextureARB = (void *) wglGetProcAddress("glClientActiveTextureARB");
1257                glLockArraysEXT = (void *) wglGetProcAddress("glLockArraysEXT" );
1258                glUnlockArraysEXT = (void *) wglGetProcAddress("glUnlockArraysEXT");
1259                  glGenBuffersARB = (void *) wglGetProcAddress("glGenBuffersARB");
1260                  glBindBufferARB = (void *) wglGetProcAddress("glBindBufferARB");
1261                  glBufferDataARB = (void *) wglGetProcAddress("glBufferDataARB");
1262                glMapBufferARB  = (void *) wglGetProcAddress("glMapBufferARB");
1263                glUnmapBufferARB  = (void *) wglGetProcAddress("glUnmapBufferARB");
1264                  glDeleteBuffersARB = (void *) wglGetProcAddress("glDeleteBuffersARB");
1265                glBlendFuncSeparate = (void *) wglGetProcAddress("glBlendFuncSeparate");
1266
1267                wglChoosePixelFormatARB = (void *) wglGetProcAddress("wglChoosePixelFormatARB");
1268                wglGetExtensionsStringARB = (void *)wglGetProcAddress("wglGetExtensionsStringARB");
1269                wglCreatePbufferARB = (void *)wglGetProcAddress("wglCreatePbufferARB");
1270                wglGetPbufferDCARB = (void *)wglGetProcAddress("wglGetPbufferDCARB");
1271                wglQueryPbufferARB = (void *)wglGetProcAddress("wglQueryPbufferARB");
1272                wglDestroyPbufferARB = (void *)wglGetProcAddress("wglDestroyPbufferARB");
1273                wglReleasePbufferDCARB = (void *)wglGetProcAddress("wglReleasePbufferDCARB");
1274                wglBindTexImageARB = (void *)wglGetProcAddress("wglBindTexImageARB");
1275                wglReleaseTexImageARB = (void *)wglGetProcAddress("wglReleaseTexImageARB");
1276
1277                wglSwapIntervalEXT = (void *)wglGetProcAddress("wglSwapIntervalEXT");
1278
1279                // eSystem_LoggingMode(LOG_MSGBOX, null);
1280
1281                if(wglChoosePixelFormatARB)
1282                {
1283                     int pixelFormat;
1284                     int valid;
1285                     int numFormats;
1286                     float fAttributes[] = {0,0};
1287                     int iAttributes[] =
1288                   {
1289                      WGL_DRAW_TO_WINDOW_ARB,GL_TRUE,
1290                             WGL_SUPPORT_OPENGL_ARB,GL_TRUE,
1291                             WGL_ACCELERATION_ARB,WGL_FULL_ACCELERATION_ARB,
1292                             WGL_COLOR_BITS_ARB,24,
1293                             WGL_ALPHA_BITS_ARB,8,
1294                             WGL_DEPTH_BITS_ARB,16,
1295                             WGL_STENCIL_BITS_ARB,0,
1296                             WGL_DOUBLE_BUFFER_ARB,GL_TRUE,
1297                             WGL_SAMPLE_BUFFERS_ARB,GL_TRUE,
1298                             WGL_SAMPLES_ARB, 4,                                         // Check For 4x Multisampling
1299                             0,0
1300                   };
1301
1302                   //Log("Found wglChoosePixelFormatARB\n");
1303
1304                     valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1305                     if(!valid || !numFormats)
1306                     {
1307                      //Log("Can't find 4x multi sampling\n");
1308                        iAttributes[19] = 2;
1309                        valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1310                      if(!valid || !numFormats)
1311                      {
1312                         // Log("Can't find 2x multi sampling\n");
1313                         iAttributes[16] = 0;
1314                         iAttributes[17] = 0;
1315                         valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1316                      }
1317                     }
1318                   if(valid && numFormats)
1319                   {
1320                      oglSystem.format = pixelFormat;
1321                      wglMakeCurrent(null, null);
1322                      wglDeleteContext(oglSystem.glrc);
1323
1324                      // *** DescribePixelFormat does not support WGL pixel formats! ***
1325                      //DescribePixelFormat(oglSystem.hdc, oglSystem.format, sizeof(oglSystem.pfd), &oglSystem.pfd);
1326                      SetPixelFormat(oglSystem.hdc, oglSystem.format, &oglSystem.pfd);
1327                      //Log("Successfully set pixel format\n");
1328
1329                      oglSystem.glrc = wglCreateContext(oglSystem.hdc);
1330                      wglMakeCurrent(oglSystem.hdc, oglSystem.glrc);
1331                   }
1332                }
1333                /*else
1334                   eSystem_Logf("Can't find wglChoosePixelFormatARB\n");*/
1335
1336                result = true;
1337
1338                wglMakeCurrent(null, null);
1339
1340                //eSystem_DumpErrors(true);
1341             }
1342          }
1343       }
1344    #elif defined(__unix__)
1345       #if defined(__ANDROID__)
1346          egl_init_display(guiApp.desktop.windowHandle);
1347          result = true;
1348       #else
1349       int attrList[] =
1350       {
1351    #ifndef ECERE_MINIGLX
1352          GLX_USE_GL, GLX_DEPTH_SIZE, 1,
1353    #endif
1354          GLX_RGBA,
1355          GLX_RED_SIZE, 1, GLX_GREEN_SIZE, 1, GLX_BLUE_SIZE, 1,
1356          GLX_DOUBLEBUFFER,
1357          None
1358       };
1359       oglSystem.visualInfo = glXChooseVisual(xGlobalDisplay, DefaultScreen(xGlobalDisplay), attrList);
1360       if(oglSystem.visualInfo)
1361       {
1362          //printf("glXChooseVisual returnded a visual info\n");
1363          oglSystem.dummyPixmap = XCreatePixmap(xGlobalDisplay, (uint)displaySystem.window, 1, 1, oglSystem.visualInfo->depth);
1364          oglSystem.dummyGLXPixmap = glXCreateGLXPixmap(xGlobalDisplay, oglSystem.visualInfo, oglSystem.dummyPixmap);
1365
1366          oglSystem.glContext = glXCreateContext(xGlobalDisplay, oglSystem.visualInfo, null, True);
1367          // printf("Creating system Context (%x)!\n", oglSystem.glContext);
1368          if(oglSystem.glContext)
1369          {
1370             //printf("Got a Context\n");
1371             glXMakeCurrent(xGlobalDisplay, oglSystem.dummyGLXPixmap /*displaySystem.window /-*DefaultRootWindow(xGlobalDisplay)*/, oglSystem.glContext);
1372
1373             // Setup Extensions
1374
1375             glXMakeCurrent(xGlobalDisplay, None, null);
1376
1377             result = true;
1378          }
1379       }
1380       #endif
1381    #endif
1382
1383       displaySystem.flags.alpha = true;
1384       displaySystem.flags.flipping = true;
1385       displaySystem.pixelFormat = pixelFormat888;
1386       return result;
1387    }
1388
1389    void DestroyDisplaySystem(DisplaySystem displaySystem)
1390    {
1391       OGLSystem oglSystem = displaySystem.driverData;
1392
1393    #if defined(__WIN32__)
1394       wglMakeCurrent( null, null );
1395
1396       if(oglSystem.glrc)
1397          wglDeleteContext(oglSystem.glrc);
1398
1399       if(oglSystem.hdc)
1400          ReleaseDC(oglSystem.hwnd, oglSystem.hdc);
1401       DestroyWindow(oglSystem.hwnd);
1402
1403    #elif defined(__unix__)
1404       #if defined(__ANDROID__)
1405          egl_term_display();
1406       #else
1407       if(oglSystem.visualInfo)
1408       {
1409    #ifdef   ECERE_MINIGLX
1410          __miniglx_XFree(oglSystem.visualInfo);
1411    #else
1412          XFree(oglSystem.visualInfo);
1413    #endif
1414       }
1415
1416       if(oglSystem.dummyGLXPixmap)
1417          glXDestroyGLXPixmap(xGlobalDisplay, oglSystem.dummyGLXPixmap);
1418       if(oglSystem.dummyPixmap);
1419          XFreePixmap(xGlobalDisplay, oglSystem.dummyPixmap);
1420       #endif
1421    #endif
1422       delete oglSystem;
1423    }
1424
1425    bool CreateDisplay(Display display)
1426    {
1427       bool result = false;
1428       OGLDisplay oglDisplay = display.driverData;
1429       OGLSystem oglSystem = display.displaySystem.driverData;
1430       if(!oglDisplay)
1431          oglDisplay = display.driverData = OGLDisplay { };
1432       //printf("Inside CreateDisplay\n");
1433
1434 #if defined(__WIN32__) || defined(USEPBUFFER)
1435       if(!display.alphaBlend)
1436 #endif
1437       {
1438    #if defined(__WIN32__)
1439          oglDisplay.hdc = GetDC(display.window);
1440          SetPixelFormat(oglDisplay.hdc, oglSystem.format, &oglSystem.pfd);
1441          if((oglDisplay.glrc = wglCreateContext(oglDisplay.hdc)))
1442          {
1443             wglShareLists(oglSystem.glrc, oglDisplay.glrc);
1444             wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
1445             result = true;
1446          }
1447          else
1448             ReleaseDC(display.window, oglDisplay.hdc);
1449    #elif defined(__unix__)
1450       #if defined(__ANDROID__)
1451       #else
1452          XVisualInfo * visualInfo = null;
1453          /*
1454          int attrib[] =
1455          {
1456             GLX_RENDER_TYPE, GLX_RGBA_BIT,
1457             GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
1458             GLX_RED_SIZE, 1,
1459             GLX_GREEN_SIZE, 1,
1460             GLX_BLUE_SIZE, 1,
1461             GLX_DOUBLEBUFFER, True,
1462             GLX_DEPTH_SIZE, 24,
1463             None
1464          };
1465          */
1466          //visualInfo = glXChooseVisual(xGlobalDisplay, DefaultScreen(xGlobalDisplay), attrib);
1467          visualInfo = ((XWindowData)display.windowDriverData).visual;
1468
1469          /*
1470          GLXFBConfig *fbconfigs, fbconfig;
1471          int numfbconfigs;
1472          fbconfigs = glXChooseFBConfig(xGlobalDisplay, DefaultScreen(xGlobalDisplay), attrib, &numfbconfigs);
1473          if(fbconfigs)
1474          {
1475             int i;
1476             for (i = 0; i < numfbconfigs; i++)
1477             {
1478                XRenderPictFormat * format;
1479                visualInfo = glXGetVisualFromFBConfig(xGlobalDisplay, fbconfigs[i]);
1480                if (!visualInfo) continue;
1481                format = XRenderFindVisualFormat(xGlobalDisplay, visualInfo->visual);
1482                if (!format) continue;
1483
1484                if(format->direct.alphaMask > 0)
1485                {
1486                   fbconfig = fbconfigs[i];
1487                   break;
1488                }
1489                //XFree(visualInfo);
1490             }
1491
1492             if (i == numfbconfigs)
1493             {
1494                fbconfig = fbconfigs[0];
1495                visualInfo = glXGetVisualFromFBConfig(xGlobalDisplay, fbconfig);
1496             }
1497             XFree(fbconfigs);
1498          }
1499          */
1500          if(visualInfo)
1501          {
1502             //printf("visualInfo is not null\n");
1503             // printf("Creating Display Context, sharing with %x!\n", oglSystem.glContext);
1504             oglDisplay.glContext = glXCreateContext(xGlobalDisplay, visualInfo, oglSystem.glContext, True);
1505             //XFree(visualInfo);
1506          }
1507
1508          // oglDisplay.glContext = glXCreateContext(xGlobalDisplay, oglSystem.visualInfo, oglSystem.glContext, True);
1509          if(oglDisplay.glContext)
1510          {
1511             //printf("CreateDisplay Got a Context\n");
1512             glXMakeCurrent(xGlobalDisplay, (int)display.window, oglDisplay.glContext);
1513             result = true;
1514          }
1515       #endif
1516    #endif
1517       }
1518 #if defined(__WIN32__) || defined(USEPBUFFER)
1519       else
1520          result = true;
1521 #endif
1522       if(result)
1523       {
1524 #if !defined(__OLDX__)
1525          if(glBlendFuncSeparate)
1526             glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
1527          else
1528 #endif
1529             glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1530          glEnable(GL_BLEND);
1531
1532          glMatrixMode(GL_MODELVIEW);
1533          glScalef(1.0f, 1.0f, -1.0f);
1534          // glTranslatef(0.375f, 0.375f, 0.0f);
1535          // glTranslatef(-0.625f, -0.625f, 0.0f);
1536          glMatrixMode(GL_PROJECTION);
1537          glShadeModel(GL_FLAT);
1538
1539          // glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, true);
1540          glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
1541          glFogi(GL_FOG_MODE, GL_EXP);
1542          glFogf(GL_FOG_DENSITY, 0);
1543          glEnable(GL_NORMALIZE);
1544          glDepthFunc(GL_LESS);
1545          glClearDepth(1.0);
1546          glDisable(GL_MULTISAMPLE_ARB);
1547       }
1548 #if !defined(ECERE_NO3D) && !defined(ECERE_VANILLA)
1549       display.ambient = Color { 50,50,50 };
1550 #endif
1551
1552    if(!useSingleGLContext)
1553    #if defined(__WIN32__)
1554       wglMakeCurrent(null, null);
1555    #elif defined(__unix__)
1556       #if defined(__ANDROID__)
1557       result = true;
1558       #else
1559       glXMakeCurrent(xGlobalDisplay, None, null);
1560       #endif
1561    #endif
1562
1563       return result;
1564    }
1565
1566    bool DisplaySize(Display display, int width, int height)
1567    {
1568       OGLDisplay oglDisplay = display.driverData;
1569       OGLSystem oglSystem = display.displaySystem.driverData;
1570
1571       bool result = false;
1572
1573       //printf("Inside DisplaySize\n");
1574 #if defined(__WIN32__) || defined(USEPBUFFER)
1575       if(display.alphaBlend)
1576       {
1577 #if defined(__WIN32__)
1578          const int attributes[]=
1579          {
1580             /*WGL_TEXTURE_FORMAT_ARB, WGL_TEXTURE_RGBA_ARB,
1581             WGL_TEXTURE_TARGET_ARB, WGL_TEXTURE_2D_ARB, */0
1582          };
1583          int pixelFormat = 0;
1584          if(wglChoosePixelFormatARB)
1585          {
1586             int valid;
1587             int numFormats;
1588             float fAttributes[] = {0,0};
1589             int iAttributes[] =
1590             {
1591                //WGL_DRAW_TO_BITMAP_ARB, GL_TRUE,
1592                WGL_DRAW_TO_PBUFFER_ARB,GL_TRUE,
1593                     WGL_SUPPORT_OPENGL_ARB,GL_TRUE,
1594                     WGL_ACCELERATION_ARB,WGL_FULL_ACCELERATION_ARB,
1595                     WGL_COLOR_BITS_ARB,24,
1596                     WGL_ALPHA_BITS_ARB,8,
1597                     WGL_DEPTH_BITS_ARB,16,
1598                     WGL_STENCIL_BITS_ARB,0,
1599                     WGL_DOUBLE_BUFFER_ARB,GL_FALSE,
1600                     WGL_SAMPLE_BUFFERS_ARB,GL_TRUE,
1601                     WGL_SAMPLES_ARB, 4,                                         // Check For 4x Multisampling
1602                     0,0
1603             };
1604
1605             //Log("Found wglChoosePixelFormatARB\n");
1606
1607             valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1608             if(!valid || !numFormats)
1609             {
1610                //Log("Can't find 4x multi sampling\n");
1611                iAttributes[19] = 2;
1612                valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1613                if(!valid || !numFormats)
1614                {
1615                   // Log("Can't find 2x multi sampling\n");
1616                   iAttributes[16] = 0;
1617                   iAttributes[17] = 0;
1618                   valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1619                   if(!valid || !numFormats)
1620                   {
1621                      int iAttributes[] =
1622                      {
1623                         WGL_DRAW_TO_PBUFFER_ARB,GL_TRUE,
1624                         //WGL_DRAW_TO_BITMAP_ARB,GL_TRUE,
1625                         WGL_SUPPORT_OPENGL_ARB,GL_TRUE,
1626                         WGL_COLOR_BITS_ARB,24,
1627                         WGL_ALPHA_BITS_ARB,8,
1628                         WGL_DEPTH_BITS_ARB,16,
1629                         0,0
1630                      };
1631                      valid = wglChoosePixelFormatARB(oglSystem.hdc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
1632                   }
1633                }
1634             }
1635             if(valid && numFormats)
1636             {
1637                wglMakeCurrent(null, null);
1638             }
1639          }
1640
1641          wglMakeCurrent( null, null );
1642          wglMakeCurrent( oglDisplay.hdc, oglDisplay.glrc );
1643          if(oglDisplay.hdc && oglDisplay.pBuffer)
1644             wglReleasePbufferDCARB(oglDisplay.pBuffer, oglDisplay.hdc);
1645
1646          wglDestroyPbufferARB(oglDisplay.pBuffer);
1647
1648          if(!useSingleGLContext)
1649             wglMakeCurrent( null, null );
1650
1651          if(oglDisplay.glrc)
1652             wglDeleteContext(oglDisplay.glrc);
1653
1654          oglDisplay.pBuffer = wglCreatePbufferARB(oglSystem.hdc, pixelFormat, width, height, attributes);
1655          oglDisplay.hdc = wglGetPbufferDCARB(oglDisplay.pBuffer);
1656          if((oglDisplay.glrc = wglCreateContext(oglDisplay.hdc)))
1657          {
1658             BITMAPINFO * info;
1659             HDC hdc = GetDC(display.window);
1660
1661             wglShareLists(oglSystem.glrc, oglDisplay.glrc);
1662             wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
1663
1664             //wglQueryPbufferARB(pBuffer, WGL_PBUFFER_WIDTH_ARB, &width);
1665             //wglQueryPbufferARB(pBuffer, WGL_PBUFFER_HEIGHT_ARB, &height);
1666
1667             // glDeleteBuffersARB(2, oglDisplay.imageBuffers);
1668
1669             if((info = (BITMAPINFO *)new0 byte[sizeof(BITMAPINFOHEADER)+sizeof(RGBQUAD)*256]))
1670             {
1671                HBITMAP newBitmap;
1672
1673                if(oglDisplay.memDC) DeleteDC(oglDisplay.memDC);
1674                oglDisplay.memDC = CreateCompatibleDC(hdc);
1675                SetMapMode(oglDisplay.memDC, MM_TEXT);
1676                info->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
1677                info->bmiHeader.biPlanes = 1;
1678                info->bmiHeader.biCompression = BI_RGB;
1679                info->bmiHeader.biBitCount = 32; //(uint16)GetDeviceCaps(hdc, BITSPIXEL);
1680                info->bmiHeader.biWidth = width;
1681                info->bmiHeader.biHeight = height;
1682                newBitmap = CreateDIBSection(hdc, info, DIB_RGB_COLORS, &oglDisplay.picture, null, 0);
1683                if(newBitmap)
1684                {
1685                   SelectObject(oglDisplay.memDC, newBitmap);
1686                   if(oglDisplay.memBitmap) DeleteObject(oglDisplay.memBitmap);
1687                   /*
1688                   {
1689                      PIXELFORMATDESCRIPTOR pfd = { 0 };
1690                      pfd.nSize = (short)sizeof(pfd);
1691                      pfd.nVersion = 1;
1692                      pfd.dwFlags = PFD_DRAW_TO_BITMAP | PFD_SUPPORT_OPENGL;
1693                      pfd.iPixelType = PFD_TYPE_RGBA;
1694                      pfd.cColorBits = 32;
1695                      //pfd.cAlphaBits = 8;
1696                      pfd.cDepthBits = 24;
1697                      pfd.iLayerType = PFD_MAIN_PLANE;
1698
1699                      oglDisplay.hdc = oglDisplay.memDC;
1700
1701                      pixelFormat = ChoosePixelFormat(oglSystem.hdc, &pfd);
1702                      DescribePixelFormat(oglDisplay.hdc, pixelFormat, sizeof(pfd), &pfd);
1703                      SetPixelFormat(oglDisplay.hdc, pixelFormat, &pfd);
1704
1705                      oglDisplay.glrc = wglCreateContext(oglDisplay.hdc);
1706                      wglShareLists(oglSystem.glrc, oglDisplay.glrc);
1707                      wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
1708                   }
1709                   */
1710                   /*
1711                   {
1712                      const int imageSize = width * height * 4;
1713
1714                      glGenBuffersARB(2, oglDisplay.imageBuffers);
1715
1716                      glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
1717                      glBufferDataARB(GL_PIXEL_PACK_BUFFER_ARB, imageSize, null, GL_STREAM_READ);
1718                      // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
1719                      // glBufferDataARB(GL_PIXEL_PACK_BUFFER_ARB, imageSize / 2, null, GL_STREAM_READ);
1720                   }
1721                   */
1722                   oglDisplay.memBitmap = newBitmap;
1723                   oglDisplay.stride = width;
1724
1725                   result = true;
1726                }
1727                delete info;
1728             }
1729             ReleaseDC(display.window, hdc);
1730          }
1731 #elif defined(__unix__)
1732       #if defined(__ANDROID__)
1733          result = true;
1734       #else
1735         int attrib[] =
1736         {
1737                 GLX_DOUBLEBUFFER,  True,
1738             GLX_DEPTH_SIZE,    1,
1739                 GLX_RED_SIZE,      8,
1740                 GLX_GREEN_SIZE,    8,
1741                 GLX_BLUE_SIZE,     8,
1742                 GLX_ALPHA_SIZE,    8,
1743                 GLX_STENCIL_SIZE,  1,
1744                 //GLX_DEPTH_SIZE,    24,
1745                 GLX_RENDER_TYPE,   GLX_RGBA_BIT,
1746                 GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT | GLX_WINDOW_BIT,
1747                 None
1748         };
1749
1750         int PBattrib[] =
1751         {
1752                 GLX_PBUFFER_WIDTH,   width,
1753                 GLX_PBUFFER_HEIGHT,  height,
1754                 GLX_LARGEST_PBUFFER, False,
1755             None
1756         };
1757
1758         // choose a pixel format that meets our minimum requirements
1759         int count = 0;
1760
1761         GLXFBConfig *config = glXChooseFBConfig(xGlobalDisplay, DefaultScreen(xGlobalDisplay), attrib, &count);
1762          if(config)
1763          {
1764             if(oglDisplay.pixmap)
1765             {
1766                XFreePixmap(xGlobalDisplay, oglDisplay.pixmap);
1767                oglDisplay.pixmap = None;
1768             }
1769             if(oglDisplay.shapePixmap)
1770             {
1771                XFreePixmap(xGlobalDisplay, oglDisplay.shapePixmap);
1772                oglDisplay.shapePixmap = None;
1773             }
1774
1775             // Free Shared Memory Pixmap
1776             if(oglDisplay.image)
1777             {
1778                if(oglDisplay.shminfoShape.shmid != -1)
1779                {
1780                   XShmDetach(xGlobalDisplay, &oglDisplay.shminfo);
1781                   if(oglDisplay.shminfo.shmaddr != (void *)-1)
1782                      shmdt(oglDisplay.shminfo.shmaddr);
1783                   shmctl(oglDisplay.shminfo.shmid, IPC_RMID, 0);
1784                }
1785                XDestroyImage(oglDisplay.image);
1786                oglDisplay.image = None;
1787             }
1788             if(oglDisplay.shapeImage)
1789             {
1790                if(oglDisplay.shminfoShape.shmid != -1)
1791                {
1792                   XShmDetach(xGlobalDisplay, &oglDisplay.shminfoShape);
1793                   if(oglDisplay.shminfoShape.shmaddr != (void *)-1)
1794                      shmdt(oglDisplay.shminfoShape.shmaddr);
1795                   shmctl(oglDisplay.shminfoShape.shmid, IPC_RMID, 0);
1796                }
1797                XDestroyImage(oglDisplay.shapeImage);
1798                oglDisplay.shapeImage = None;
1799             }
1800
1801             if(oglDisplay.windowPicture)
1802                XRenderFreePicture(xGlobalDisplay, oglDisplay.windowPicture);
1803             if(oglDisplay.pixmapPicture)
1804                XRenderFreePicture(xGlobalDisplay, oglDisplay.pixmapPicture);
1805
1806             if(oglDisplay.pixmap)
1807                XFreePixmap(xGlobalDisplay, oglDisplay.pixmap);
1808
1809             if(oglDisplay.glContext)
1810                   glXDestroyContext(xGlobalDisplay, oglDisplay.glContext);
1811             if(oglDisplay.pBuffer)
1812                glXDestroyPbuffer(xGlobalDisplay, oglDisplay.pBuffer);
1813
1814                 oglDisplay.pBuffer = glXCreatePbuffer(xGlobalDisplay, config[0], PBattrib);
1815             if(oglDisplay.pBuffer)
1816             {
1817                    oglDisplay.glContext = glXCreateNewContext(xGlobalDisplay, config[0], GLX_RGBA_TYPE, oglSystem.glContext, True);
1818                if(oglDisplay.glContext)
1819                {
1820                   glXMakeCurrent(xGlobalDisplay, None, null);
1821                   glXMakeCurrent(xGlobalDisplay, (int)display.window, oglDisplay.glContext);
1822
1823                   // Initialize Shared Memory Pixmap
1824                   oglDisplay.image = XShmCreateImage(xGlobalDisplay, DefaultVisual(xGlobalDisplay, DefaultScreen(xGlobalDisplay)), 32,
1825                      ZPixmap, null, &oglDisplay.shminfo, width, height);
1826                   if(oglDisplay.image)
1827                   {
1828                      oglDisplay.shminfo.shmid = shmget(IPC_PRIVATE,
1829                         oglDisplay.image->bytes_per_line * oglDisplay.image->height, IPC_CREAT|0777);
1830                      if(oglDisplay.shminfo.shmid != -1)
1831                      {
1832                         oglDisplay.shminfo.shmaddr = shmat(oglDisplay.shminfo.shmid, 0, 0);
1833                         if(oglDisplay.shminfo.shmaddr != (void *)-1)
1834                         {
1835                            oglDisplay.shminfo.readOnly = False;
1836                            if(XShmAttach(xGlobalDisplay, &oglDisplay.shminfo))
1837                            {
1838                               oglDisplay.pixmap = XShmCreatePixmap(xGlobalDisplay, (X11Window)display.window, oglDisplay.shminfo.shmaddr,
1839                                  &oglDisplay.shminfo, width, height, 32);
1840
1841                               // Initialize Shared Memory Shape Pixmap
1842                               oglDisplay.shapeImage = XShmCreateImage(xGlobalDisplay, DefaultVisual(xGlobalDisplay, DefaultScreen(xGlobalDisplay)), 1,
1843                                  ZPixmap, null, &oglDisplay.shminfoShape, width, height);
1844                               if(oglDisplay.shapeImage)
1845                               {
1846                                  oglDisplay.shminfoShape.shmid = shmget(IPC_PRIVATE,
1847                                     oglDisplay.shapeImage->bytes_per_line * oglDisplay.shapeImage->height, IPC_CREAT|0777);
1848                                  if(oglDisplay.shminfoShape.shmid != -1)
1849                                  {
1850                                     oglDisplay.shminfoShape.shmaddr = shmat(oglDisplay.shminfoShape.shmid, 0, 0);
1851                                     if(oglDisplay.shminfoShape.shmaddr != (void *)-1)
1852                                     {
1853                                        oglDisplay.shminfoShape.readOnly = False;
1854                                        if(XShmAttach(xGlobalDisplay, &oglDisplay.shminfoShape))
1855                                        {
1856                                           oglDisplay.shapePixmap = XShmCreatePixmap(xGlobalDisplay, (X11Window)display.window, oglDisplay.shminfoShape.shmaddr,
1857                                              &oglDisplay.shminfoShape, width, height, 1);
1858                                           //oglDisplay.shapePixmap = XCreatePixmap(xGlobalDisplay, (X11Window)display.window, width, height, 1);
1859
1860                                           {
1861                                              XRenderPictureAttributes attributes = { 0 };
1862                                              XRenderPictFormat * format = XRenderFindStandardFormat(xGlobalDisplay, /*PictStandardRGB24*/ PictStandardARGB32);
1863                                              #if !defined(__APPLE__) && !defined(__OLDX__)
1864                                              attributes.repeat = RepeatNormal;
1865                                              #else
1866                                              attributes.repeat = 1;
1867                                              #endif
1868                                              oglDisplay.pixmapPicture = XRenderCreatePicture(xGlobalDisplay, oglDisplay.pixmap, format, CPRepeat, &attributes);
1869                                              oglDisplay.windowPicture = XRenderCreatePicture(xGlobalDisplay, (X11Window)display.window, format, 0, &attributes);
1870                                              oglDisplay.shapePicture = XRenderCreatePicture(xGlobalDisplay, oglDisplay.shapePixmap,
1871                                                 XRenderFindStandardFormat(xGlobalDisplay, PictStandardA1), 0, &attributes);
1872                                           }
1873
1874                                           oglDisplay.picture = oglDisplay.shminfo.shmaddr;
1875                                           oglDisplay.stride = oglDisplay.image->bytes_per_line / 4;
1876
1877                                           result = true;
1878                                        }
1879                                     }
1880                                  }
1881                               }
1882                            }
1883                         }
1884                      }
1885                   }
1886                }
1887             }
1888             XFree(config);
1889          }
1890      #endif
1891 #endif
1892          CreateDisplay(display);
1893 #if defined(__WIN32__)
1894          wglMakeCurrent(oglDisplay.hdc, oglDisplay.glrc);
1895 #elif defined(__unix__)
1896       #if defined(__ANDROID__)
1897          width = eglWidth;
1898          height = eglHeight;
1899       #else
1900          glXMakeCurrent(xGlobalDisplay, (int)display.window, oglDisplay.glContext);
1901       #endif
1902 #endif
1903       }
1904       else
1905 #endif
1906          result = true;
1907       if(!result && display.alphaBlend)
1908       {
1909          printf("Alpha blending windows not supported on this display\n");
1910       }
1911       if(!result)
1912          return false;
1913
1914       result = false;
1915
1916       glViewport(0,0,width,height);
1917       glLoadIdentity();
1918       glOrtho(0,width,height,0,0.0,1.0);
1919       displayWidth = display.width = width;
1920       displayHeight = display.height = height;
1921
1922       if(!oglDisplay.flippingBuffer || oglDisplay.flipBufW < width || oglDisplay.flipBufH < height)
1923       {
1924          oglDisplay.flipBufW = width;
1925          oglDisplay.flipBufH = height;
1926          oglDisplay.flippingBuffer = renew oglDisplay.flippingBuffer ColorAlpha [width * height];
1927       }
1928       if(oglDisplay.flippingBuffer || !width || !height)
1929          result = true;
1930
1931       return result;
1932    }
1933
1934    void DisplayPosition(Display display, int x, int y)
1935    {
1936       OGLDisplay oglDisplay = display.driverData;
1937
1938       oglDisplay.x = x;
1939       oglDisplay.y = y;
1940    }
1941
1942    void SetPalette(Display display, ColorAlpha * palette, bool colorMatch)
1943    {
1944    }
1945
1946    void RestorePalette(Display display)
1947    {
1948    }
1949
1950    void StartUpdate(Display display)
1951    {
1952    }
1953
1954    void EndUpdate(Display display)
1955    {
1956    }
1957
1958    void Scroll(Display display, Box scroll, int x, int y, Extent dirty)
1959    {
1960    }
1961
1962    void Update(Display display, Box updateBox)
1963    {
1964       OGLDisplay oglDisplay = display.driverData;
1965       //Logf("DisplayScreen\n");
1966
1967       glFlush();
1968       glFinish();
1969 #if defined(__WIN32__) || defined(USEPBUFFER)
1970       if(display.alphaBlend)
1971       {
1972          glPixelStorei(GL_PACK_ALIGNMENT, 4);
1973          glPixelStorei(GL_PACK_ROW_LENGTH, oglDisplay.stride);
1974          glPixelStorei(GL_PACK_SKIP_ROWS, 0);
1975          glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
1976          glReadPixels(0,0,display.width,display.height,GL_BGRA_EXT,GL_UNSIGNED_BYTE, oglDisplay.picture);
1977
1978          {
1979 #if defined(__WIN32__)
1980             HDC hdc = GetDC(0);
1981             POINT point = { oglDisplay.x, oglDisplay.y};
1982             POINT srcPoint = { 0, 0 };
1983             BLENDFUNCTION blend = { 0 };
1984             SIZE size;
1985             size.cx = display.width;
1986             size.cy = display.height;
1987             blend.BlendOp = AC_SRC_OVER;
1988             blend.BlendFlags = 0;
1989             blend.SourceConstantAlpha = 255;
1990             blend.AlphaFormat = AC_SRC_ALPHA;
1991
1992             /*
1993             // Process partial images.  Mapping the buffer waits for
1994             // outstanding DMA transfers into the buffer to finish.
1995             glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
1996             oglDisplay.pboMemory1 = (byte *)glMapBufferARB(GL_PIXEL_PACK_BUFFER_ARB, GL_READ_ONLY);
1997
1998             // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
1999             // oglDisplay.pboMemory2 = (byte *)glMapBufferARB(GL_PIXEL_PACK_BUFFER_ARB,GL_READ_ONLY);
2000
2001
2002             memcpy(oglDisplay.picture, oglDisplay.pboMemory1, display.width * display.height * 4);
2003             //memcpy(oglDisplay.picture + display.width * display.height * 4 / 2, oglDisplay.pboMemory2, display.width * display.height * 4/ 2);
2004             */
2005
2006             UpdateLayeredWindow(display.window, hdc, &point, &size, oglDisplay.memDC, &srcPoint, 0, &blend, ULW_ALPHA);
2007             /*
2008
2009             // Unmap the image buffers
2010             glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2011             glUnmapBufferARB(GL_PIXEL_PACK_BUFFER_ARB);
2012
2013             // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2014             // glUnmapBufferARB(GL_PIXEL_PACK_BUFFER_ARB);
2015
2016             // Bind two different buffer objects and start the glReadPixels
2017             // asynchronously. Each call will return directly after
2018             // starting the DMA transfer.
2019             glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[0]);
2020             glReadPixels(0, 0, display.width, display.height, GL_BGRA, GL_UNSIGNED_BYTE, 0);
2021
2022             // glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, oglDisplay.imageBuffers[1]);
2023             // glReadPixels(0, display.height/2, display.width, display.height/2, GL_BGRA, GL_UNSIGNED_BYTE, 0);
2024             */
2025
2026             ReleaseDC(0, hdc);
2027 #elif defined(__unix__)
2028       #if defined(__ANDROID__)
2029       #else
2030             XTransform transform =
2031             {
2032                {
2033                   { (int)(1.0f * (1<<16)), (int)(0.0f * (1<<16)),  (int)(0 * (1 << 16)) },
2034                   { (int)(0.0f),           (int)(-1.0f * (1<<16)), (int)(0 * (1<<16)) },
2035                   { (int)(0.0f * (1<<16)), (int)(0.0f * (1<<16)),  (int)(1.0f * (1<<16)) }
2036                }
2037             };
2038             XRenderSetPictureTransform(xGlobalDisplay, oglDisplay.pixmapPicture, &transform);
2039             XRenderComposite(xGlobalDisplay, PictOpSrc, oglDisplay.pixmapPicture, None, oglDisplay.shapePicture, 0, 0, 0, 0, 0, 0, display.width, display.height);
2040             XRenderComposite(xGlobalDisplay, PictOpSrc, oglDisplay.pixmapPicture, None, oglDisplay.windowPicture, 0, 0, 0, 0, 0, 0, display.width, display.height);
2041             #if !defined(__APPLE__) && !defined(__OLDX__)
2042             XShapeCombineMask(xGlobalDisplay, (uint)display.window, ShapeInput, 0, 0, oglDisplay.shapePixmap, ShapeSet);
2043             #else
2044             XShapeCombineMask(xGlobalDisplay, display.window, 2, 0, 0, oglDisplay.shapePixmap, ShapeSet);
2045             #endif
2046             XFlush(xGlobalDisplay);
2047      #endif
2048 #endif
2049          }
2050       }
2051       else
2052 #endif
2053       {
2054 #if defined(__WIN32__)
2055          //wglSwapLayerBuffers(oglDisplay.hdc,WGL_SWAP_MAIN_PLANE);
2056          SwapBuffers(oglDisplay.hdc);
2057 #elif defined(__unix__)
2058       #if defined(__ANDROID__)
2059          eglSwapBuffers(eglDisplay, eglSurface);
2060       #else
2061          glXSwapBuffers(xGlobalDisplay, (int)display.window);
2062       #endif
2063 #endif
2064       }
2065       //Logf("Out of DisplayScreen\n");
2066    }
2067
2068    void FreeBitmap(DisplaySystem displaySystem, Bitmap bitmap)
2069    {
2070       glDeleteTextures(1, (int *)&bitmap.driverData);
2071       bitmap.driverData = 0;
2072
2073       bitmap.driver = ((subclass(DisplayDriver))class(LFBDisplayDriver));
2074    }
2075
2076    bool AllocateBitmap(DisplaySystem displaySystem, Bitmap bitmap, int width, int height, int stride, PixelFormat format, bool allocatePalette)
2077    {
2078       bool result = false;
2079       Bitmap mipMap { };
2080       int glBitmap = -1;
2081
2082       uint w = pow2i(Min(width, 1024)), h = pow2i(Min(height, 1024));
2083       //uint w = pow2i(Min(width, 2048)), h = pow2i(Min(height, 2048));
2084       //uint w = pow2i(Min(width, 512)), h = pow2i(Min(height, 512));
2085
2086       glGenTextures(1, &glBitmap);
2087       glBindTexture(GL_TEXTURE_2D, glBitmap);
2088
2089       glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
2090
2091       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
2092       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
2093
2094       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
2095       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
2096
2097       glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
2098
2099       mipMap.Allocate(null, w, h, w, pixelFormatRGBA, false);
2100
2101       // glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2102       glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2103
2104       delete mipMap;
2105
2106       bitmap.driverData = (void *)glBitmap;
2107       bitmap.driver = displaySystem.driver;
2108       bitmap.width = w;
2109       bitmap.height = h;
2110
2111       result = true;
2112       return result;
2113    }
2114
2115    bool MakeDDBitmap(DisplaySystem displaySystem, Bitmap bitmap, bool mipMaps)
2116    {
2117       bool result = false;
2118       OGLSystem oglSystem = displaySystem.driverData;
2119
2120       // Pre process the bitmap... First make it 32 bit
2121       if(/*bitmap.pixelFormat == pixelFormatRGBA || */bitmap.Convert(null, pixelFormat888, null))
2122       {
2123          int c, level;
2124          uint w = pow2i(Min(bitmap.width, 1024)), h = pow2i(Min(bitmap.height, 1024));
2125          //uint w = pow2i(Min(bitmap.width, 512)), h = pow2i(Min(bitmap.height, 512));
2126          int glBitmap = -1;
2127
2128          // Switch ARGB to RGBA
2129          //if(bitmap.format != pixelFormatRGBA)
2130          {
2131             for(c=0; c<bitmap.size; c++)
2132             {
2133                // ((ColorRGBA *)bitmap.picture)[c] = ((ColorAlpha *)bitmap.picture)[c];
2134                // TODO:
2135                ColorAlpha color = ((ColorAlpha *)bitmap.picture)[c];
2136                ((ColorRGBA *)bitmap.picture)[c] = ColorRGBA { color.color.r, color.color.g, color.color.b, color.a };
2137             }
2138          }
2139          bitmap.pixelFormat = pixelFormat888;
2140
2141          glGetError();
2142          glGenTextures(1, &glBitmap);
2143          if(glBitmap == -1)
2144          {
2145             int error = glGetError();
2146             return false;
2147             //Print("");
2148          }
2149
2150          glBindTexture(GL_TEXTURE_2D, glBitmap);
2151          glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
2152
2153          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
2154          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, mipMaps ? GL_LINEAR_MIPMAP_LINEAR : GL_LINEAR);
2155          //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
2156
2157          //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
2158          //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
2159
2160          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
2161          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
2162
2163          glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
2164
2165          result = true;
2166
2167          for(level = 0; result && (w > 1 || h > 1); level++, w >>= 1, h >>= 1)
2168          {
2169             Bitmap mipMap;
2170             if(bitmap.width != w || bitmap.height != h)
2171             {
2172                mipMap = Bitmap { };
2173                if(mipMap.Allocate(null, w, h, w, bitmap.pixelFormat, false))
2174                {
2175                   Surface mipSurface = mipMap.GetSurface(0,0,null);
2176                   mipSurface.Filter(bitmap, 0,0,0,0, w, h, bitmap.width, bitmap.height);
2177                   delete mipSurface;
2178                }
2179                else
2180                {
2181                   result = false;
2182                   delete mipMap;
2183                }
2184             }
2185             else
2186                mipMap = bitmap;
2187
2188             if(result)
2189             {
2190                int error;
2191                //int width = 0;
2192                glGetError();
2193                // glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA8, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2194                glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, mipMap.picture);
2195                //printf("Calling glTexImage2D\n");
2196                //glGetTexLevelParameteriv(GL_TEXTURE_2D, level, GL_TEXTURE_WIDTH, &width);
2197                //printf("width = %d (Should be %d, %d)\n", width, w, h);
2198                if((error = glGetError()))
2199                {
2200                   //Logf("OpenGL Bitmap MakeDD error: %d...\n", error);
2201                   //printf("OpenGL Bitmap MakeDD error: %d...\n", error);
2202                   result = false;
2203                }
2204             }
2205             if(mipMap != bitmap)
2206                delete mipMap;
2207             if(!mipMaps) break;
2208          }
2209
2210          if(!bitmap.keepData)
2211             bitmap.driver.FreeBitmap(bitmap.displaySystem, bitmap);
2212          bitmap.driverData = (void *)glBitmap;
2213          bitmap.driver = displaySystem.driver;
2214
2215          if(!result)
2216             FreeBitmap(displaySystem, bitmap);
2217          else if(oglSystem.loadingFont)
2218          {
2219             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
2220             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
2221             oglSystem.loadingFont = false;
2222          }
2223       }
2224       return result;
2225    }
2226
2227    void ReleaseSurface(Display display, Surface surface)
2228    {
2229       glDisable(GL_SCISSOR_TEST);
2230       delete surface.driverData;
2231       surface.driverData = null;
2232    }
2233
2234    bool GetBitmapSurface(DisplaySystem displaySystem, Surface surface, Bitmap bitmap, int x, int y, Box clip)
2235    {
2236       return false;
2237    }
2238
2239    bool GetSurface(Display display, Surface surface, int x,int y, Box clip)
2240    {
2241       bool result = false;
2242       OGLSurface oglSurface = surface.driverData = OGLSurface { };
2243
2244       //Logf("GetSurface\n");
2245
2246       if(oglSurface)
2247       {
2248          if(displayWidth != display.width || displayHeight != display.height)
2249          {
2250             displayWidth = display.width;
2251             displayHeight = display.height;
2252
2253             glViewport(0,0,display.width,display.height);
2254             glLoadIdentity();
2255             glOrtho(0,display.width,display.height,0,0.0,1.0);
2256          }
2257
2258          surface.offset.x = x;
2259          surface.offset.y = y;
2260          surface.unclippedBox = surface.box = clip;
2261          oglSurface.bitmapMult[0] = 1;
2262          oglSurface.bitmapMult[1] = 1;
2263          oglSurface.bitmapMult[2] = 1;
2264          oglSurface.bitmapMult[3] = 1;
2265
2266          glEnable(GL_SCISSOR_TEST);
2267          glScissor(
2268             x+clip.left,
2269             (display.height) -(y+clip.bottom)-1,
2270             clip.right-clip.left+1,
2271             clip.bottom-clip.top+1);
2272          result = true;
2273       }
2274       return result;
2275    }
2276
2277    void Clip(Display display, Surface surface, Box clip)
2278    {
2279       Box box;
2280
2281       //Logf("Clip\n");
2282
2283       if(clip != null)
2284       {
2285          box = clip;
2286          box.Clip(surface.unclippedBox);
2287          surface.box = box;
2288       }
2289       else
2290          box = surface.box = surface.unclippedBox;
2291       box.left += surface.offset.x;
2292       box.top  += surface.offset.y;
2293       box.right+= surface.offset.x;
2294       box.bottom += surface.offset.y;
2295
2296       glScissor(
2297          box.left,display.height - box.bottom - 1,
2298          box.right-box.left+1, box.bottom-box.top+1);
2299    }
2300
2301    bool GrabScreen(Display display, Bitmap bitmap, int x, int y, unsigned int w, unsigned int h)
2302    {
2303       bool result = false;
2304       OGLDisplay oglDisplay = display.driverData;
2305       ColorAlpha * flippingBuffer = oglDisplay.flippingBuffer;
2306
2307       if(oglDisplay.flippingBuffer)
2308       {
2309          if(bitmap.pixelFormat != pixelFormat888 || bitmap.width < w || bitmap.height < h)
2310          {
2311             bitmap.Free();
2312             bitmap.Allocate(null, w,h,w, pixelFormat888, false);
2313          }
2314          if(bitmap)
2315          {
2316             uint row;
2317
2318             glPixelStorei(GL_PACK_ALIGNMENT, 4);
2319             glPixelStorei(GL_PACK_ROW_LENGTH, bitmap.stride);
2320             glPixelStorei(GL_PACK_SKIP_ROWS, 0);
2321             glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
2322             glReadPixels(x,display.height-h-y,w,h,GL_BGRA_EXT,GL_UNSIGNED_BYTE, flippingBuffer);
2323
2324             // Need a flip...
2325             for(row = 0; row<h; row++)
2326                CopyBytesBy4(((ColorAlpha *)bitmap.picture) + row * w, ((ColorAlpha *)flippingBuffer) + (h-row-1) * w, w);
2327             result = true;
2328          }
2329       }
2330       return result;
2331    }
2332
2333    void SetForeground(Display display, Surface surface, ColorAlpha color)
2334    {
2335       OGLSurface oglSurface = surface.driverData;
2336
2337       //Logf("SetForeground\n");
2338
2339       oglSurface.foreground[0] = color.color.r/255.0f;
2340       oglSurface.foreground[1] = color.color.g/255.0f;
2341       oglSurface.foreground[2] = color.color.b/255.0f;
2342       //oglSurface.foreground[3] = 1.0f;
2343       oglSurface.foreground[3] = color.a/255.0f;
2344
2345       //if(!oglSurface.foreground[3])printf("bug");
2346    }
2347
2348    void SetBackground(Display display, Surface surface, ColorAlpha color)
2349    {
2350       OGLSurface oglSurface = surface.driverData;
2351
2352       //Logf("SetBackground\n");
2353
2354       oglSurface.background[0] = color.color.r/255.0f;
2355       oglSurface.background[1] = color.color.g/255.0f;
2356       oglSurface.background[2] = color.color.b/255.0f;
2357       //oglSurface.background[3] = 1.0;
2358       oglSurface.background[3] = color.a/255.0f;
2359    }
2360
2361    void SetBlitTint(Display display, Surface surface, ColorAlpha color)
2362    {
2363       OGLSurface oglSurface = surface.driverData;
2364
2365       oglSurface.bitmapMult[0] = color.color.r/255.0f;
2366       oglSurface.bitmapMult[1] = color.color.g/255.0f;
2367       oglSurface.bitmapMult[2] = color.color.b/255.0f;
2368       oglSurface.bitmapMult[3] = color.a/255.0f;
2369    }
2370
2371    ColorAlpha GetPixel(Display display, Surface surface,int x,int y)
2372    {
2373       return 0;
2374    }
2375
2376    void PutPixel(Display display, Surface surface,int x,int y)
2377    {
2378       OGLSurface oglSurface = surface.driverData;
2379
2380       //Logf("PutPixel\n");
2381
2382       glColor4fv(oglSurface.foreground);
2383       glBegin(GL_POINTS);
2384       // glVertex2i(x+surface.offset.x, y+surface.offset.y);
2385       glVertex2f(x+surface.offset.x + 0.5f, y+surface.offset.y + 0.5f);
2386
2387       glEnd();
2388    }
2389
2390    void DrawLine(Display display, Surface surface, int x1, int y1, int x2, int y2)
2391    {
2392       OGLSurface oglSurface = surface.driverData;
2393       if(x1 == x2) { y2++; y1--; }
2394       else if(y1 == y2) { x2++; x1--; }
2395       x1 += surface.offset.x;
2396       y1 += surface.offset.y;
2397       x2 += surface.offset.x;
2398       y2 += surface.offset.y;
2399
2400       //Logf("Line\n");
2401
2402       glColor4fv(oglSurface.foreground);
2403       glBegin(GL_LINES);
2404 #ifdef __ANDROID__
2405       if(stippleEnabled)
2406       {
2407          glTexCoord2f(0.5f, 0);
2408          glVertex2f(x1 + 0.5f, y1 + 0.5f);
2409          glTexCoord2f(Max(x2-x1, y2-y1) + 0.5f, 0);
2410          glVertex2f(x2 + 0.5f, y2 + 0.5f);
2411       }
2412       else
2413 #endif
2414       {
2415          /*
2416          glVertex2i(x1, y1);
2417          glVertex2i(x2, y2);
2418          */
2419          glVertex2f(x1 + 0.5f, y1 + 0.5f);
2420          glVertex2f(x2 + 0.5f, y2 + 0.5f);
2421       }
2422
2423       glEnd();
2424    }
2425
2426    void Rectangle(Display display, Surface surface,int x1,int y1,int x2,int y2)
2427    {
2428       OGLSurface oglSurface = surface.driverData;
2429       x1 += surface.offset.x;
2430       y1 += surface.offset.y;
2431       x2 += surface.offset.x;
2432       y2 += surface.offset.y;
2433
2434       //Logf("Rectangle\n");
2435
2436       glColor4fv(oglSurface.foreground);
2437 #ifdef __ANDROID__
2438       if(stippleEnabled)
2439       {
2440          glBegin(GL_LINES);
2441
2442          glTexCoord2f(0.5f, 0);
2443          glVertex2f(x1 + 0.5f, y1 + 0.5f);
2444          glTexCoord2f(y2-y1 + 0.5f, 0);
2445          glVertex2f(x1 + 0.5f, y2 + 0.5f);
2446
2447          glTexCoord2f(0.5f, 0);
2448          glVertex2f(x1 + 0.5f, y2 + 0.5f);
2449          glTexCoord2f(x2 - x1 + 0.5f, 0);
2450          glVertex2f(x2 + 0.5f, y2 + 0.5f);
2451
2452          glTexCoord2f(0.5f, 0);
2453          glVertex2f(x2 + 0.5f, y2 + 0.5f);
2454          glTexCoord2f(y1 - y2 + 0.5f, 0);
2455          glVertex2f(x2 + 0.5f, y1 + 0.5f);
2456
2457          glTexCoord2f(0.5f, 0);
2458          glVertex2f(x2 + 0.5f, y1 + 0.5f);
2459          glTexCoord2f(x1 - x2 + 0.5f, 0);
2460          glVertex2f(x1 + 0.5f, y1 + 0.5f);
2461       }
2462       else
2463 #endif
2464       {
2465          glBegin(GL_LINE_LOOP);
2466          /*
2467          glVertex2i(x1, y1);
2468          glVertex2i(x1, y2);
2469          glVertex2i(x2, y2);
2470          glVertex2i(x2, y1);
2471          */
2472          glVertex2f(x1 + 0.5f, y1 + 0.5f);
2473          glVertex2f(x1 + 0.5f, y2 + 0.5f);
2474          glVertex2f(x2 + 0.5f, y2 + 0.5f);
2475          glVertex2f(x2 + 0.5f, y1 + 0.5f);
2476       }
2477       glEnd();
2478    }
2479
2480    void Area(Display display, Surface surface,int x1,int y1,int x2,int y2)
2481    {
2482       OGLSurface oglSurface = surface.driverData;
2483       //Logf("Area\n");
2484
2485       glColor4fv(oglSurface.background);
2486       glRecti(x1+surface.offset.x, y1+surface.offset.y,
2487               x2+surface.offset.x + 1, y2+surface.offset.y + 1);
2488
2489       /*
2490       glRectf(x1+surface.offset.x, y1+surface.offset.y,
2491               x2+surface.offset.x + 1, y2+surface.offset.y + 1);
2492       */
2493    }
2494
2495    void Clear(Display display, Surface surface, ClearType type)
2496    {
2497       OGLDisplay oglDisplay = display.driverData;
2498       OGLSurface oglSurface = surface.driverData;
2499
2500       //Logf("Clear\n");
2501       if(type != depthBuffer)
2502          glClearColor(oglSurface.background[0], oglSurface.background[1], oglSurface.background[2], oglSurface.background[3]);
2503       if(type != colorBuffer && !oglDisplay.depthWrite)
2504       {
2505          glDepthMask((byte)bool::true);
2506       }
2507       glClear(((type != depthBuffer) ? GL_COLOR_BUFFER_BIT : 0) |
2508               ((type != colorBuffer) ? GL_DEPTH_BUFFER_BIT : 0));
2509       if(type != colorBuffer && !oglDisplay.depthWrite)
2510       {
2511          glDepthMask((byte)bool::false);
2512       }
2513    }
2514
2515    bool ConvertBitmap(DisplaySystem displaySystem, Bitmap bitmap, PixelFormat format, ColorAlpha * palette)
2516    {
2517       return true;
2518    }
2519
2520    void Blit(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h)
2521    {
2522       OGLSurface oglSurface = surface.driverData;
2523
2524 #if !defined(__OLDX__)
2525          // WHY DO WE HAVE GL_ONE HERE ?
2526          /*if(glBlendFuncSeparate && !oglSurface.writingText)
2527             glBlendFuncSeparate(GL_ONE, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
2528 #endif
2529
2530       if(!oglSurface.writingText)
2531       {
2532          // glTranslatef(-0.375f, -0.375f, 0.0f);
2533          glEnable(GL_TEXTURE_2D);
2534          glColor4fv(oglSurface.bitmapMult);
2535       }
2536       else if(oglSurface.xOffset)
2537          glTranslatef(oglSurface.xOffset / 64.0f/*-0.375f*/, 0.0f, 0.0f);
2538
2539       glBindTexture(GL_TEXTURE_2D, (uint)bitmap.driverData);
2540       glBegin(GL_QUADS);
2541
2542       if(h < 0)
2543       {
2544          glTexCoord2f((float)sx/ bitmap.width, (float)(sy-h)/ bitmap.height);
2545          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
2546          glTexCoord2f((float)(sx+w) / bitmap.width, (float)(sy-h)/ bitmap.height);
2547          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
2548          glTexCoord2f((float)(sx+w)/ bitmap.width, (float)sy/ bitmap.height);
2549          glVertex2i(dx+w+surface.offset.x, dy-h+surface.offset.y);
2550          glTexCoord2f((float)sx / bitmap.width, (float)sy/ bitmap.height);
2551          glVertex2i(dx+surface.offset.x, dy-h+surface.offset.y);
2552       }
2553       else
2554       {
2555          /*
2556          glTexCoord2f((float)sx / bitmap.width, (float)sy/ bitmap.height);
2557          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
2558          glTexCoord2f((float)(sx+w)/ bitmap.width, (float)sy/ bitmap.height);
2559          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
2560          glTexCoord2f((float)(sx+w) / bitmap.width, (float)(sy+h)/ bitmap.height);
2561          glVertex2i(dx+w+surface.offset.x, dy+h+surface.offset.y);
2562          glTexCoord2f((float)sx/ bitmap.width, (float)(sy+h)/ bitmap.height);
2563          glVertex2i(dx+surface.offset.x, dy+h+surface.offset.y);
2564          */
2565
2566          glTexCoord2f((float)sx / bitmap.width, (float)sy/ bitmap.height);
2567          glVertex2f((float)dx+surface.offset.x, (float)dy+surface.offset.y);
2568          glTexCoord2f((float)(sx+w)/ bitmap.width, (float)sy/ bitmap.height);
2569          glVertex2f((float)dx+w+surface.offset.x, (float)dy+surface.offset.y);
2570          glTexCoord2f((float)(sx+w) / bitmap.width, (float)(sy+h)/ bitmap.height);
2571          glVertex2f((float)dx+w+surface.offset.x, (float)dy+h+surface.offset.y);
2572          glTexCoord2f((float)sx/ bitmap.width, (float)(sy+h)/ bitmap.height);
2573          glVertex2f((float)dx+surface.offset.x, (float)dy+h+surface.offset.y);
2574       }
2575       glEnd();
2576
2577       if(!oglSurface.writingText)
2578       {
2579          glDisable(GL_TEXTURE_2D);
2580
2581          //glTranslatef(0.375f, 0.375f, 0.0f);
2582       }
2583       else if(oglSurface.xOffset)
2584          glTranslatef(-oglSurface.xOffset / 64.0f/*+0.375f*/, 0.0f, 0.0f);
2585
2586 #if !defined(__OLDX__)
2587          /*if(glBlendFuncSeparate && !oglSurface.writingText)
2588             glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
2589 #endif
2590    }
2591
2592    void Stretch(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
2593    {
2594       OGLSurface oglSurface = surface.driverData;
2595
2596       //glTranslatef(-0.375f, -0.375f, 0.0f);
2597
2598       //Logf("Stretch\n");
2599
2600 #if !defined(__OLDX__)
2601       /*if(glBlendFuncSeparate)
2602          glBlendFuncSeparate(GL_ONE, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
2603 #endif
2604
2605       glEnable(GL_TEXTURE_2D);
2606       glBindTexture(GL_TEXTURE_2D, (uint)bitmap.driverData);
2607
2608       glColor4fv(oglSurface.bitmapMult);
2609
2610       glBegin(GL_QUADS);
2611
2612       if(h < 0)
2613       {
2614          glTexCoord2f((float)(sx)/ bitmap.width, (float)(sy+sh)/ bitmap.height);
2615          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
2616
2617          glTexCoord2f((float)(sx+sw) / bitmap.width, (float)(sy+sh)/ bitmap.height);
2618          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
2619
2620          glTexCoord2f((float)(sx+sw)/ bitmap.width, (float)(sy)/ bitmap.height);
2621          glVertex2i(dx+w+surface.offset.x, dy-h+surface.offset.y);
2622
2623          glTexCoord2f((float)(sx) / bitmap.width, (float)(sy)/ bitmap.height);
2624          glVertex2i(dx+surface.offset.x, dy-h+surface.offset.y);
2625       }
2626       else
2627       {
2628          glTexCoord2f((float)(sx) / bitmap.width, (float)(sy)/ bitmap.height);
2629          glVertex2i(dx+surface.offset.x, dy+surface.offset.y);
2630
2631          glTexCoord2f((float)(sx+sw)/ bitmap.width, (float)(sy)/ bitmap.height);
2632          glVertex2i(dx+w+surface.offset.x, dy+surface.offset.y);
2633
2634          glTexCoord2f((float)(sx+sw) / bitmap.width, (float)(sy+sh)/ bitmap.height);
2635          glVertex2i(dx+w+surface.offset.x, dy+h+surface.offset.y);
2636
2637          glTexCoord2f((float)(sx)/ bitmap.width, (float)(sy+sh)/ bitmap.height);
2638          glVertex2i(dx+surface.offset.x, dy+h+surface.offset.y);
2639       }
2640
2641       glEnd();
2642
2643       glDisable(GL_TEXTURE_2D);
2644
2645       //glTranslatef(0.375f, 0.375f, 0.0f);
2646 #if !defined(__OLDX__)
2647       /*if(glBlendFuncSeparate)
2648          glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);*/
2649 #endif
2650
2651    }
2652
2653    void Filter(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
2654    {
2655       Stretch(display, surface, bitmap, dx, dy, sx, sy, w, h, sw, sh);
2656    }
2657
2658    void StretchDI(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
2659    {
2660       float s2dw,s2dh,d2sw,d2sh;
2661       bool flipX = false, flipY = false;
2662
2663       //Logf("StretchDI\n");
2664
2665       if(Sgn(w) != Sgn(sw))
2666       {
2667          w = Abs(w);
2668          sw = Abs(sw);
2669          flipX = true;
2670       }
2671       if(Sgn(h) != Sgn(sh))
2672       {
2673          h = Abs(h);
2674          sh = Abs(sh);
2675          flipY = true;
2676       }
2677
2678       s2dw=(float)w / sw;
2679       s2dh=(float)h / sh;
2680       d2sw=(float)sw / w;
2681       d2sh=(float)sh / h;
2682
2683       //Clip against the edges of the source
2684       if(sx<0)
2685       {
2686          dx+=(int)((0-sx) * s2dw);
2687          w-=(int)((0-sx) * s2dw);
2688          sw-=0-sx;
2689          sx=0;
2690       }
2691       if(sy<0)
2692       {
2693          dy+=(int)((0-sy) * s2dh);
2694          h-=(int)((0-sy) * s2dh);
2695
2696          sh-=0-sy;
2697          sy=0;
2698       }
2699       if(sx+sw>bitmap.width-1)
2700       {
2701          w-=(int)((sx+sw-(bitmap.width-1)-1)*s2dw);
2702          sw-=sx+sw-(bitmap.width-1)-1;
2703       }
2704       if(sy+sh>(bitmap.height-1))
2705       {
2706          h-=(int)((sy+sh-(bitmap.height-1)-1)*s2dh);
2707          sh-=sy+sh-(bitmap.height-1)-1;
2708       }
2709       //Clip against the edges of the surfaceination
2710       if(dx<surface.box.left)
2711       {
2712          //if(!flip)
2713          sx+=(int)((surface.box.left-dx)*d2sw);
2714          sw-=(int)((surface.box.left-dx)*d2sw);
2715          w-=surface.box.left-dx;
2716          dx=surface.box.left;
2717       }
2718       if(dy<surface.box.top)
2719       {
2720          sy+=(int)((surface.box.top-dy)*d2sh);
2721          sh-=(int)((surface.box.top-dy)*d2sh);
2722          h-=surface.box.top-dy;
2723          dy=surface.box.top;
2724       }
2725       if(dx+w>surface.box.right)
2726       {
2727          //if(flip) sx+=(int)((dx+w-surface.box.right-1)*d2sw);
2728          sw-=(int)((dx+w-surface.box.right-1)*d2sw);
2729          w-=dx+w-surface.box.right-1;
2730       }
2731       if(dy+h>surface.box.bottom)
2732       {
2733          sh-=(int)((dy+h-surface.box.bottom-1)*d2sh);
2734          h-=dy+h-surface.box.bottom-1;
2735       }
2736       if((w<=0)||(h<=0)||(sw<=0)||(sh<=0)) return;
2737
2738       dx += surface.offset.x;
2739       dy += surface.offset.y;
2740
2741       if(bitmap.pixelFormat == pixelFormat888 && !bitmap.paletteShades)
2742       {
2743          glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
2744          glPixelStorei(GL_UNPACK_ROW_LENGTH, bitmap.stride);
2745          glPixelStorei(GL_UNPACK_SKIP_PIXELS, sx);
2746          glPixelStorei(GL_UNPACK_SKIP_ROWS, sy);
2747          glRasterPos2d(dx,dy);
2748          //glPixelZoom(flipX ? -s2dw : s2dw, flipY ? s2dh : -s2dh);
2749          glPixelZoom(s2dw, -s2dh);
2750          glDrawPixels(sw,sh,GL_BGRA_EXT,GL_UNSIGNED_BYTE, bitmap.picture);
2751          glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
2752          glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
2753       }
2754    }
2755
2756    void BlitDI(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h)
2757    {
2758       //Logf("BlitDI\n");
2759
2760       //Clip against the edges of the source
2761       if(sx<0)
2762       {
2763          dx+=-sx;
2764          w-=-sx;
2765          sx=0;
2766       }
2767       if(sy<0)
2768       {
2769          dy+=0-sy;
2770          h-=0-sy;
2771          sy=0;
2772       }
2773       if(sx+w>bitmap.width-1)
2774          w-=sx+w-(bitmap.width-1)-1;
2775       if(sy+h>bitmap.height-1)
2776          h-=sy+h-(bitmap.height-1)-1;
2777       //Clip against the edges of the surfaceination
2778       if(dx<surface.box.left)
2779       {
2780          //if(!flip)
2781          sx+=surface.box.left-dx;
2782          w-=surface.box.left-dx;
2783          dx=surface.box.left;
2784       }
2785       if(dy<surface.box.top)
2786       {
2787          sy+=surface.box.top-dy;
2788          h-=surface.box.top-dy;
2789          dy=surface.box.top;
2790       }
2791       if(dx+w>surface.box.right)
2792       {
2793          //if(flip) sx+=dx+w-surface.box.right-1;
2794          w-=dx+w-surface.box.right-1;
2795       }
2796       if(dy+h>surface.box.bottom)
2797          h-=dy+h-surface.box.bottom-1;
2798       if((w<=0)||(h<=0))
2799          return;
2800
2801       dx += surface.offset.x;
2802       dy += surface.offset.y;
2803
2804       if(bitmap.pixelFormat == pixelFormat888 && !bitmap.paletteShades)
2805       {
2806          glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
2807          glPixelStorei(GL_UNPACK_ROW_LENGTH, bitmap.stride);
2808          glPixelStorei(GL_UNPACK_SKIP_PIXELS, sx);
2809          glPixelStorei(GL_UNPACK_SKIP_ROWS, sy);
2810          glRasterPos2d(dx,dy);
2811          glPixelZoom(1,-1);
2812          glDrawPixels(w,h,GL_BGRA_EXT,GL_UNSIGNED_BYTE, bitmap.picture);
2813          glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
2814          glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
2815       }
2816    }
2817
2818    void FilterDI(Display display, Surface surface, Bitmap bitmap, int dx, int dy, int sx, int sy, int w, int h, int sw, int sh)
2819    {
2820       StretchDI(display, surface, bitmap, dx, dy, sx, sy, w, h, sw, sh);
2821    }
2822
2823    void UnloadFont(DisplaySystem displaySystem, Font font)
2824    {
2825       ((subclass(DisplayDriver))class(LFBDisplayDriver)).UnloadFont(displaySystem, font);
2826    }
2827
2828    Font LoadFont(DisplaySystem displaySystem, char * faceName, float size, FontFlags flags)
2829    {
2830       Font font;
2831       OGLSystem oglSystem = displaySystem.driverData;
2832       oglSystem.loadingFont = true;
2833       font = ((subclass(DisplayDriver))class(LFBDisplayDriver)).LoadFont(displaySystem, faceName, size, flags);
2834       return font;
2835    }
2836
2837    void FontExtent(DisplaySystem displaySystem, Font font, char * text, int len, int * width, int * height)
2838    {
2839       ((subclass(DisplayDriver))class(LFBDisplayDriver)).FontExtent(displaySystem, font, text, len, width, height);
2840    }
2841
2842    void WriteText(Display display, Surface surface, int x, int y, char * text, int len)
2843    {
2844       OGLSurface oglSurface = surface.driverData;
2845       OGLSystem oglSystem = display.displaySystem.driverData;
2846       oglSystem.loadingFont = true;
2847
2848       //glTranslatef(-0.375f, -0.375f, 0.0f);
2849
2850       //Logf("Blit\n");
2851
2852       if(surface.textOpacity)
2853       {
2854          int w, h;
2855          FontExtent(display.displaySystem, surface.font, text, len, &w, &h);
2856          display.displaySystem.driver.Area(display, surface,x,y,x+w-1,y+h-1);
2857       }
2858
2859       oglSurface.writingText = true;
2860
2861       glEnable(GL_TEXTURE_2D);
2862       glColor4fv(oglSurface.foreground);
2863
2864       ((subclass(DisplayDriver))class(LFBDisplayDriver)).WriteText(display, surface, x, y, text, len);
2865       oglSurface.writingText = false;
2866       oglSystem.loadingFont = false;
2867
2868       glDisable(GL_TEXTURE_2D);
2869
2870       //glTranslatef(0.375f, 0.375f, 0.0f);
2871    }
2872
2873    void TextFont(Display display, Surface surface, Font font)
2874    {
2875       ((subclass(DisplayDriver))class(LFBDisplayDriver)).TextFont(display, surface, font);
2876    }
2877
2878    void TextOpacity(Display display, Surface surface, bool opaque)
2879    {
2880       OGLSurface oglSurface = surface.driverData;
2881       oglSurface.opaqueText = opaque;
2882    }
2883
2884    void TextExtent(Display display, Surface surface, char * text, int len, int * width, int * height)
2885    {
2886       OGLSurface oglSurface = surface.driverData;
2887       OGLSystem oglSystem = display.displaySystem.driverData;
2888       oglSystem.loadingFont = true;
2889       FontExtent(display.displaySystem, oglSurface.font, text, len, width, height);
2890       oglSystem.loadingFont = false;
2891    }
2892
2893    void DrawingChar(Display display, Surface surface, char character)
2894    {
2895
2896    }
2897
2898    void LineStipple(Display display, Surface surface, uint32 stipple)
2899    {
2900       //Logf("Stipple\n");
2901
2902       if(stipple)
2903       {
2904 #if defined(__ANDROID__)
2905          stippleEnabled = true;
2906          glesLineStipple(1, (uint16)stipple);
2907 #else
2908          glLineStipple(1, (uint16)stipple);
2909          glEnable(GL_LINE_STIPPLE);
2910 #endif
2911       }
2912       else
2913       {
2914 #if defined(__ANDROID__)
2915          stippleEnabled = false;
2916          glMatrixMode(GL_TEXTURE);
2917          glLoadIdentity();
2918          glMatrixMode(GL_PROJECTION);
2919          glDisable(GL_TEXTURE_2D);
2920 #else
2921          glDisable(GL_LINE_STIPPLE);
2922 #endif
2923       }
2924    }
2925 #if !defined(ECERE_NO3D) && !defined(ECERE_VANILLA)
2926    void SetRenderState(Display display, RenderState state, uint value)
2927    {
2928       OGLDisplay oglDisplay = display.driverData;
2929       //Logf("RenderState\n");
2930
2931       switch(state)
2932       {
2933          case antiAlias:
2934             if(value)
2935                glEnable(GL_MULTISAMPLE_ARB);
2936             else
2937                glDisable(GL_MULTISAMPLE_ARB);
2938             break;
2939          case fillMode:
2940             glPolygonMode(GL_FRONT_AND_BACK, ((FillModeValue)value == solid) ? GL_FILL : GL_LINE);
2941             break;
2942          case depthTest:
2943             if(value) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
2944             break;
2945          case depthWrite:
2946             if(value) glDepthMask((byte)bool::true); else glDepthMask((byte)bool::false);
2947             oglDisplay.depthWrite = value;
2948             break;
2949          case fogColor:
2950          {
2951             float color[4] = { ((Color)value).r/255.0f, ((Color)value).g/255.0f, ((Color)value).b/255.0f, 1.0f };
2952             glFogfv(GL_FOG_COLOR, (float *)&color);
2953             break;
2954          }
2955          case fogDensity:
2956             glFogf(GL_FOG_DENSITY, *(float *)(void *)&value);
2957             break;
2958          case blend:
2959             if(value) glEnable(GL_BLEND); else glDisable(GL_BLEND);
2960             break;
2961          case ambient:
2962          {
2963             float ambient[4] = { ((Color)value).r/255.0f, ((Color)value).g/255.0f, ((Color)value).b/255.0f, 1.0f };
2964             glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambient);
2965             break;
2966          }
2967          case alphaWrite:
2968          {
2969             if(value) glColorMask(1,1,1,1); else glColorMask(1,1,1,0);
2970             break;
2971          }
2972          case vSync:
2973          {
2974 #if defined(__WIN32__)
2975             wglSwapIntervalEXT(value ? 1 : 0);
2976 #endif
2977             break;
2978          }
2979       }
2980    }
2981
2982    void SetLight(Display display, int id, Light light)
2983    {
2984       //Logf("SetLight\n");
2985
2986       if(light != null)
2987       {
2988          Object lightObject = light.lightObject;
2989          float position[4] = { 0, 0, 0, 0 };
2990          float color[4] = { 0, 0, 0, 1 };
2991
2992          glEnable(GL_LIGHT0 + id);
2993          /*
2994          glLightfv(GL_LIGHT0 + id, GL_DIFFUSE, (float *)&light.diffuse);
2995          glLightfv(GL_LIGHT0 + id, GL_AMBIENT, (float *)&light.ambient);
2996          glLightfv(GL_LIGHT0 + id, GL_SPECULAR,(float *)&light.specular);
2997          */
2998
2999          if(!light.multiplier) light.multiplier = 1.0f;
3000
3001          color[0] = light.diffuse.r * light.multiplier;
3002          color[1] = light.diffuse.g * light.multiplier;
3003          color[2] = light.diffuse.b * light.multiplier;
3004          glLightfv(GL_LIGHT0 + id, GL_DIFFUSE, color);
3005
3006          color[0] = light.ambient.r * light.multiplier;
3007          color[1] = light.ambient.g * light.multiplier;
3008          color[2] = light.ambient.b * light.multiplier;
3009          glLightfv(GL_LIGHT0 + id, GL_AMBIENT, color);
3010          color[0] = light.specular.r * light.multiplier;
3011          color[1] = light.specular.g * light.multiplier;
3012          color[2] = light.specular.b * light.multiplier;
3013          glLightfv(GL_LIGHT0 + id, GL_SPECULAR,color);
3014
3015          if(lightObject)
3016          {
3017             Vector3D positionVector;
3018             if(light.flags.spot)
3019             {
3020                if(lightObject.flags.root || !lightObject.parent)
3021                {
3022                   positionVector = lightObject.transform.position;
3023                   positionVector.Subtract(positionVector, display.display3D.camera.cPosition);
3024                }
3025                else
3026                {
3027                   positionVector.MultMatrix(lightObject.transform.position, lightObject.parent.matrix);
3028                   if(display.display3D.camera)
3029                      positionVector.Subtract(positionVector, display.display3D.camera.cPosition);
3030                }
3031                position[3] = 1;
3032             }
3033             else
3034             {
3035                if(!light.direction.x && !light.direction.y && !light.direction.z)
3036                {
3037                   Vector3Df vector { 0,0,-1 };
3038                   Matrix mat;
3039                   mat.RotationQuaternion(light.orientation);
3040                   positionVector.MultMatrixf(vector, mat);
3041                }
3042                else
3043                {
3044                   positionVector = light.direction;
3045                   position[3] = 1;
3046                }
3047             }
3048
3049             position[0] = (float)positionVector.x;
3050             position[1] = (float)positionVector.y;
3051             position[2] = (float)positionVector.z;
3052
3053             glLightfv(GL_LIGHT0 + id, GL_POSITION, position);
3054
3055             /*
3056             // Display Light Position
3057             glDisable(GL_LIGHTING);
3058             glDisable(GL_DEPTH_TEST);
3059             glColor3f(1,1,1);
3060             glPointSize(10);
3061             glBegin(GL_POINTS);
3062             glVertex3fv(position);
3063             glEnd();
3064             glEnable(GL_DEPTH_TEST);
3065             glEnable(GL_LIGHTING);
3066
3067
3068             // Display Target
3069             if(lightObject.flags.root || !lightObject.parent)
3070             {
3071                positionVector = light.target.transform.position;
3072                positionVector.Subtract(positionVector, display.camera.cPosition);
3073             }
3074             else
3075             {
3076                positionVector.MultMatrix(light.target.transform.position,
3077                   lightObject.light.target.parent.matrix);
3078                positionVector.Subtract(positionVector, display.camera.cPosition);
3079             }
3080
3081             position[0] = positionVector.x;
3082             position[1] = positionVector.y;
3083             position[2] = positionVector.z;
3084
3085             glDisable(GL_LIGHTING);
3086             glDisable(GL_DEPTH_TEST);
3087             glColor3f(1,1,0);
3088             glPointSize(10);
3089             glBegin(GL_POINTS);
3090             glVertex3fv(position);
3091             glEnd();
3092             glEnable(GL_DEPTH_TEST);
3093             glEnable(GL_LIGHTING);
3094             */
3095
3096             if(light.flags.attenuation)
3097             {
3098                glLightf(GL_LIGHT0 + id, GL_CONSTANT_ATTENUATION, light.Kc);
3099                glLightf(GL_LIGHT0 + id, GL_LINEAR_ATTENUATION, light.Kl);
3100                glLightf(GL_LIGHT0 + id, GL_QUADRATIC_ATTENUATION, light.Kq);
3101             }
3102
3103             if(light.flags.spot)
3104             {
3105                float exponent = 0;
3106                #define MAXLIGHT  0.9
3107                float direction[4] = { (float)light.direction.x, (float)light.direction.y, (float)light.direction.z, 1 };
3108                // Figure out exponent out of the hot spot
3109                exponent = (float)(log(MAXLIGHT) / log(cos((light.hotSpot / 2))));
3110
3111                glLightfv(GL_LIGHT0 + id, GL_SPOT_DIRECTION, direction);
3112                glLightf(GL_LIGHT0 + id, GL_SPOT_CUTOFF, (float)(light.fallOff / 2));
3113                glLightf(GL_LIGHT0 + id, GL_SPOT_EXPONENT, exponent);
3114             }
3115          }
3116          else
3117          {
3118
3119             Vector3Df vector { 0,0,-1 };
3120             Vector3Df direction;
3121             Matrix mat;
3122
3123             mat.RotationQuaternion(light.orientation);
3124             direction.MultMatrix(vector, mat);
3125
3126             position[0] = direction.x;
3127             position[1] = direction.y;
3128             position[2] = direction.z;
3129
3130             glLightfv(GL_LIGHT0 + id, GL_POSITION, position);
3131          }
3132       }
3133       else
3134          glDisable(GL_LIGHT0 + id);
3135    }
3136
3137    void SetCamera(Display display, Surface surface, Camera camera)
3138    {
3139       OGLDisplay oglDisplay = display.driverData;
3140       //Logf("SetCamera\n");
3141
3142       if(camera)
3143       {
3144          int left = surface.box.left + surface.offset.x;
3145          int top = surface.box.top  + surface.offset.y;
3146          int right = surface.box.right + surface.offset.x;
3147          int bottom = surface.box.bottom + surface.offset.y;
3148          float origX = surface.offset.x + camera.origin.x;
3149          float origY = surface.offset.y + camera.origin.y;
3150          int x = left;
3151          int y = display.height - bottom - 1;
3152          int w = right - left + 1;
3153          int h = bottom - top + 1;
3154
3155          // *** ViewPort ***
3156          glViewport(x, y, w, h);
3157
3158          // *** Projection Matrix ***
3159          if(!display.display3D.camera)
3160             glPushMatrix();
3161          else
3162             glMatrixMode(GL_PROJECTION);
3163          if(display.display3D.collectingHits)
3164          {
3165             float pickX = display.display3D.pickX + surface.offset.x;
3166             float pickY = display.height - (display.display3D.pickY + surface.offset.y) - 1;
3167             Matrix pickMatrix =
3168             {
3169                {
3170                   w / display.display3D.pickWidth, 0, 0, 0,
3171                   0, h / display.display3D.pickHeight, 0, 0,
3172                   0, 0, 1, 0,
3173                   (w + 2.0f * (x - pickX)) / display.display3D.pickWidth,
3174                   (h + 2.0f * (y - pickY)) / display.display3D.pickHeight, 0, 1
3175                }
3176             };
3177             glLoadMatrixd(pickMatrix.array);
3178          }
3179          else
3180             glLoadIdentity();
3181          glFrustum(
3182             (left   - origX) * camera.zMin / camera.focalX,
3183             (right  - origX) * camera.zMin / camera.focalX,
3184             (bottom - origY) * camera.zMin / camera.focalY,
3185             (top    - origY) * camera.zMin / camera.focalY,
3186             camera.zMin, camera.zMax);
3187
3188          glDisable(GL_BLEND);
3189
3190          // *** Z Inverted Identity Matrix ***
3191          glMatrixMode(GL_MODELVIEW);
3192          if(!display.display3D.camera)
3193             glPushMatrix();
3194
3195          glLoadIdentity();
3196          glScalef(1.0f, 1.0f, -1.0f);
3197
3198          // *** View Matrix ***
3199          glMultMatrixd(camera.viewMatrix.array);
3200
3201          // *** Lights ***
3202          // ...
3203
3204          glEnable(GL_DEPTH_TEST);
3205          glEnable(GL_LIGHTING);
3206          glShadeModel(GL_SMOOTH);
3207          glDepthMask((byte)bool::true);
3208          oglDisplay.depthWrite = true;
3209
3210          glEnable(GL_MULTISAMPLE_ARB);
3211       }
3212       else if(display.display3D.camera)
3213       {
3214          oglDisplay.depthWrite = false;
3215          glViewport(0,0,display.width,display.height);
3216
3217          glDisable(GL_CULL_FACE);
3218          glDisable(GL_DEPTH_TEST);
3219          glDisable(GL_LIGHTING);
3220          glDisable(GL_FOG);
3221          glDisable(GL_TEXTURE_2D);
3222          glShadeModel(GL_FLAT);
3223          glEnable(GL_BLEND);
3224          glDisable(GL_MULTISAMPLE_ARB);
3225
3226          // *** Restore 2D MODELVIEW Matrix ***
3227          glPopMatrix();
3228
3229          // *** Restore 2D PROJECTION Matrix ***
3230          glMatrixMode(GL_PROJECTION);
3231          glPopMatrix();
3232       }
3233
3234       if(glBindBufferARB)
3235          glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
3236    }
3237
3238    void ApplyMaterial(Display display, Material material, Mesh mesh)
3239    {
3240       //Logf("ApplyMaterial\n");
3241
3242       // Basic Properties
3243       if(material.flags.doubleSided)
3244       {
3245          glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, !material.flags.singleSideLight);
3246          glDisable(GL_CULL_FACE);
3247       }
3248       else
3249       {
3250          glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, bool::false);
3251          glEnable(GL_CULL_FACE);
3252       }
3253
3254       // Fog
3255       if(material.flags.noFog)
3256          glDisable(GL_FOG);
3257       else
3258          glEnable(GL_FOG);
3259
3260       // Maps
3261       if(material.baseMap && mesh.texCoords)
3262       {
3263          Bitmap map = material.baseMap;
3264          glEnable(GL_TEXTURE_2D);
3265          glBindTexture(GL_TEXTURE_2D, (uint)map.driverData);
3266
3267          if(material.flags.tile)
3268          {
3269             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
3270             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
3271          }
3272          else
3273          {
3274             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
3275             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
3276          }
3277       }
3278       else
3279          glDisable(GL_TEXTURE_2D);
3280
3281       if(mesh.flags.colors)
3282       {
3283          glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
3284          glEnable(GL_COLOR_MATERIAL);
3285       }
3286       else
3287       {
3288          glDisable(GL_COLOR_MATERIAL);
3289          {
3290             float color[4] = { material.diffuse.r, material.diffuse.g, material.diffuse.b, material.opacity };
3291             glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, color);
3292          }
3293          {
3294             float color[4] = { material.ambient.r, material.ambient.g, material.ambient.b, 0 };
3295             glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, color);
3296          }
3297       }
3298       {
3299          float color[4] = { material.specular.r, material.specular.g, material.specular.b, 0 };
3300          glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, color);
3301       }
3302       {
3303          float color[4] = { material.emissive.r, material.emissive.g, material.emissive.b, 0 };
3304          glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, color);
3305       }
3306
3307       glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, &material.power);
3308    }
3309
3310    void FreeMesh(DisplaySystem displaySystem, Mesh mesh)
3311    {
3312       OGLMesh oglMesh = mesh.data;
3313       if(oglMesh)
3314       {
3315          if(!mesh.flags.vertices)
3316          {
3317             if(oglMesh.vertices)
3318             {
3319                glDeleteBuffersARB(1, &oglMesh.vertices);
3320                oglMesh.vertices = 0;
3321             }
3322             delete mesh.vertices;
3323          }
3324          if(!mesh.flags.normals)
3325          {
3326             if(oglMesh.normals)
3327             {
3328                glDeleteBuffersARB(1, &oglMesh.normals);
3329                oglMesh.normals = 0;
3330             }
3331             delete mesh.normals;
3332          }
3333          if(!mesh.flags.texCoords1)
3334          {
3335             if(oglMesh.texCoords)
3336             {
3337                glDeleteBuffersARB(1, &oglMesh.texCoords);
3338                oglMesh.texCoords = 0;
3339             }
3340             delete mesh.texCoords;
3341          }
3342          if(!mesh.flags.texCoords2)
3343          {
3344             if(oglMesh.texCoords2)
3345             {
3346                glDeleteBuffersARB(1, &oglMesh.texCoords2);
3347                oglMesh.texCoords2 = 0;
3348             }
3349             /*
3350             delete mesh.texCoords2;
3351             */
3352          }
3353          if(!mesh.flags.colors)
3354          {
3355             if(oglMesh.colors)
3356             {
3357                glDeleteBuffersARB(1, &oglMesh.colors);
3358                oglMesh.colors = 0;
3359             }
3360          }
3361          if(!mesh.flags)
3362          {
3363             delete oglMesh;
3364             mesh.data = null;
3365          }
3366       }
3367    }
3368
3369    bool AllocateMesh(DisplaySystem displaySystem, Mesh mesh)
3370    {
3371       bool result = false;
3372
3373       if(!mesh.data)
3374          mesh.data = OGLMesh { };
3375       if(mesh.data)
3376       {
3377          OGLMesh oglMesh = mesh.data;
3378
3379          if(mesh.flags.vertices && !oglMesh.vertices && !mesh.vertices)
3380          {
3381             mesh.vertices = mesh.flags.doubleVertices ? (Vector3Df *)new Vector3D[mesh.nVertices] : new Vector3Df[mesh.nVertices];
3382             if(glGenBuffersARB)
3383                glGenBuffersARB(1, &oglMesh.vertices);
3384          }
3385          if(mesh.flags.normals && !oglMesh.normals && !mesh.normals)
3386          {
3387             if(glGenBuffersARB)
3388                glGenBuffersARB( 1, &oglMesh.normals);
3389             mesh.normals = mesh.flags.doubleNormals ? (Vector3Df *)new Vector3D[mesh.nVertices] : new Vector3Df[mesh.nVertices];
3390          }
3391          if(mesh.flags.texCoords1 && !oglMesh.texCoords && !mesh.texCoords)
3392          {
3393             if(glGenBuffersARB)
3394                glGenBuffersARB( 1, &oglMesh.texCoords);
3395             mesh.texCoords = new Pointf[mesh.nVertices];
3396          }
3397          if(mesh.flags.colors && !oglMesh.colors && !mesh.colors)
3398          {
3399             if(glGenBuffersARB)
3400                glGenBuffersARB( 1, &oglMesh.colors);
3401             mesh.colors = new ColorRGBAf[mesh.nVertices];
3402          }
3403          result = true;
3404       }
3405       return result;
3406    }
3407
3408    void UnlockMesh(DisplaySystem displaySystem, Mesh mesh, MeshFeatures flags)
3409    {
3410       OGLMesh oglMesh = mesh.data;
3411       if(!flags) flags = mesh.flags;
3412
3413       if(glGenBuffersARB)
3414       {
3415          if(!(flags.vertices) || oglMesh.vertices)
3416          {
3417             glBindBufferARB( GL_ARRAY_BUFFER_ARB, oglMesh.vertices);
3418             glBufferDataARB( GL_ARRAY_BUFFER_ARB, mesh.nVertices * (mesh.flags.doubleVertices ? sizeof(Vector3D) : sizeof(Vector3Df)), mesh.vertices, GL_STATIC_DRAW_ARB );
3419          }
3420
3421          if(!(flags.normals) || oglMesh.normals)
3422          {
3423             glBindBufferARB( GL_ARRAY_BUFFER_ARB, oglMesh.normals);
3424             glBufferDataARB( GL_ARRAY_BUFFER_ARB, mesh.nVertices * (mesh.flags.doubleNormals ? sizeof(Vector3D) : sizeof(Vector3Df)), mesh.normals, GL_STATIC_DRAW_ARB );
3425          }
3426
3427          if(!(flags.texCoords1) || oglMesh.texCoords)
3428          {
3429             glBindBufferARB( GL_ARRAY_BUFFER_ARB, oglMesh.texCoords);
3430             glBufferDataARB( GL_ARRAY_BUFFER_ARB, mesh.nVertices * sizeof(Pointf), mesh.texCoords, GL_STATIC_DRAW_ARB );
3431          }
3432
3433          if(!(flags.colors) || oglMesh.colors)
3434          {
3435             glBindBufferARB( GL_ARRAY_BUFFER_ARB, oglMesh.colors);
3436             glBufferDataARB( GL_ARRAY_BUFFER_ARB, mesh.nVertices * sizeof(ColorRGBAf), mesh.colors, GL_STATIC_DRAW_ARB );
3437          }
3438
3439          glBindBufferARB( GL_ARRAY_BUFFER_ARB, 0);
3440       }
3441    }
3442
3443    bool LockMesh(DisplaySystem displaySystem, Mesh mesh, MeshFeatures flags)
3444    {
3445       bool result = true;
3446
3447         return result;
3448    }
3449
3450    void FreeIndices(DisplaySystem displaySystem, OGLIndices oglIndices)
3451    {
3452       if(oglIndices)
3453       {
3454          if(oglIndices.buffer)
3455             glDeleteBuffersARB(1, &oglIndices.buffer);
3456          delete oglIndices.indices;
3457          delete oglIndices;
3458       }
3459    }
3460
3461    void * AllocateIndices(DisplaySystem displaySystem, int nIndices, bool indices32bit)
3462    {
3463       OGLIndices oglIndices = OGLIndices { };
3464       if(oglIndices)
3465       {
3466          oglIndices.indices = (void *)(indices32bit ? new uint32[nIndices] : new uint16[nIndices]);
3467          if(glGenBuffersARB)
3468             glGenBuffersARB( 1, &oglIndices.buffer);
3469          oglIndices.nIndices = nIndices;
3470       }
3471       return oglIndices;
3472    }
3473
3474    void UnlockIndices(DisplaySystem displaySystem, OGLIndices oglIndices, bool indices32bit, int nIndices)
3475    {
3476       if(glGenBuffersARB)
3477       {
3478          glBindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, oglIndices.buffer);
3479          glBufferDataARB( GL_ELEMENT_ARRAY_BUFFER_ARB, nIndices * (indices32bit ? sizeof(uint32) : sizeof(uint16)),
3480             oglIndices.indices, GL_STATIC_DRAW_ARB);
3481          glBindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
3482       }
3483    }
3484
3485    uint16 * LockIndices(DisplaySystem displaySystem, OGLIndices oglIndices)
3486    {
3487
3488       return oglIndices.indices;
3489    }
3490
3491    void SelectMesh(Display display, Mesh mesh)
3492    {
3493       //Logf("SelectMesh\n");
3494
3495 #if !defined( __ANDROID__) && !defined(__APPLE__)
3496       if(display.display3D.mesh && glUnlockArraysEXT)
3497          glUnlockArraysEXT();
3498 #endif
3499       if(mesh)
3500       {
3501          OGLDisplay oglDisplay = display.driverData;
3502          OGLMesh oglMesh = mesh.data;
3503
3504          // *** Vertex Stream ***
3505          glEnableClientState(GL_VERTEX_ARRAY);
3506          if(!display.display3D.collectingHits && oglMesh)
3507          {
3508             if(glBindBufferARB)
3509                glBindBufferARB(GL_ARRAY_BUFFER_ARB, oglMesh.vertices );
3510             glVertexPointer(3, mesh.flags.doubleVertices ? GL_DOUBLE : GL_FLOAT, 0, glBindBufferARB ? null : mesh.vertices);
3511
3512             // *** Normals Stream ***
3513             if(mesh.normals)
3514             {
3515                glEnableClientState(GL_NORMAL_ARRAY);
3516                if(glBindBufferARB)
3517                   glBindBufferARB(GL_ARRAY_BUFFER_ARB, oglMesh.normals);
3518                glNormalPointer(mesh.flags.doubleNormals ? GL_DOUBLE : GL_FLOAT, 0, glBindBufferARB ? null : mesh.normals);
3519             }
3520             else
3521                glDisableClientState(GL_NORMAL_ARRAY);
3522
3523             // *** Texture Coordinates Stream ***
3524             if(mesh.texCoords)
3525             {
3526                glEnableClientState(GL_TEXTURE_COORD_ARRAY);
3527                if(glBindBufferARB)
3528                   glBindBufferARB( GL_ARRAY_BUFFER_ARB, oglMesh.texCoords);
3529                glTexCoordPointer(2, GL_FLOAT, 0, glBindBufferARB ? null : mesh.texCoords);
3530             }
3531             else
3532                glDisableClientState(GL_TEXTURE_COORD_ARRAY);
3533
3534             // *** Color Stream ***
3535             if(mesh.colors)
3536             {
3537                glEnableClientState(GL_COLOR_ARRAY);
3538                if(glBindBufferARB)
3539                   glBindBufferARB( GL_ARRAY_BUFFER_ARB, oglMesh.colors);
3540                glColorPointer(4, GL_FLOAT, 0, glBindBufferARB ? null : mesh.colors);
3541             }
3542             else
3543                glDisableClientState(GL_COLOR_ARRAY);
3544
3545          }
3546          else
3547          {
3548             if(glBindBufferARB)
3549                glBindBufferARB( GL_ARRAY_BUFFER_ARB, 0);
3550             glVertexPointer(3,mesh.flags.doubleVertices ? GL_DOUBLE : GL_FLOAT,0,mesh.vertices);
3551             if(mesh.normals && !display.display3D.collectingHits)
3552             {
3553                glEnableClientState(GL_NORMAL_ARRAY);
3554                glNormalPointer(mesh.flags.doubleNormals ? GL_DOUBLE : GL_FLOAT, 0, mesh.normals);
3555             }
3556             else
3557                glDisableClientState(GL_NORMAL_ARRAY);
3558             if(mesh.texCoords && !display.display3D.collectingHits)
3559             {
3560                glEnableClientState(GL_TEXTURE_COORD_ARRAY);
3561                glTexCoordPointer(2, GL_FLOAT, 0, mesh.texCoords);
3562             }
3563             else
3564                glDisableClientState(GL_TEXTURE_COORD_ARRAY);
3565             if(mesh.colors && !display.display3D.collectingHits)
3566             {
3567                glEnableClientState(GL_COLOR_ARRAY);
3568                glColorPointer(4, GL_FLOAT, 0, mesh.colors);
3569             }
3570             else
3571                glDisableClientState(GL_COLOR_ARRAY);
3572          }
3573
3574 #if !defined(__ANDROID__) && !defined(__APPLE__)
3575          if(glLockArraysEXT) glLockArraysEXT(0, mesh.nVertices);
3576 #endif
3577       }
3578       else if(glBindBufferARB)
3579          glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
3580    }
3581
3582    void DrawPrimitives(Display display, PrimitiveSingle * primitive, Mesh mesh)
3583    {
3584       OGLDisplay oglDisplay = display.driverData;
3585       //Logf("DrawPrimitives\n");
3586
3587       if(primitive->type.vertexRange)
3588          glDrawArrays(primitiveTypes[primitive->type.primitiveType], primitive->first, primitive->nVertices);
3589       else
3590       {
3591          //    *** Hoping the data won't be uploaded at all (Won't really work if another group of the mesh is using the mesh ) ***
3592          // HACK TO SPEED THINGS UP...
3593          if(primitive->nIndices < (mesh.nVertices >> 2) && !primitive->type.indices32bit)
3594          {
3595             int c;
3596             glBegin(primitiveTypes[primitive->type.primitiveType]);
3597             if(primitive->data)
3598             {
3599                OGLIndices oglIndices = primitive->data;
3600                MeshFeatures flags = mesh.flags;
3601                for(c = 0; c<primitive->nIndices; c++)
3602                {
3603                   short index = ((short *) oglIndices.indices)[c];
3604                   if(flags.normals) glNormal3fv((float *)&mesh.normals[index]);
3605                   if(flags.texCoords1) glTexCoord2fv((float *)&mesh.texCoords[index]);
3606                   if(flags.colors) glColor4fv((float *)&mesh.colors[index]);
3607                   glVertex3fv((float *)&mesh.vertices[index]);
3608                }
3609             }
3610             glEnd();
3611          }
3612          else
3613          {
3614             OGLIndices oglIndices = primitive->data;
3615
3616             if(!display.display3D.collectingHits && glBindBufferARB && oglIndices)
3617             {
3618                glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, oglIndices.buffer);
3619                glDrawElements(primitiveTypes[primitive->type.primitiveType], primitive->nIndices,
3620                   primitive->type.indices32bit ? GL_UNSIGNED_INT : GL_UNSIGNED_SHORT, 0);
3621                glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
3622             }
3623             else if(oglIndices)
3624                glDrawElements(primitiveTypes[primitive->type.primitiveType], primitive->nIndices,
3625                   primitive->type.indices32bit ? GL_UNSIGNED_INT : GL_UNSIGNED_SHORT, oglIndices.indices);
3626             else
3627                glDrawElements(primitiveTypes[primitive->type.primitiveType], primitive->nIndices,
3628                   primitive->type.indices32bit ? GL_UNSIGNED_INT : GL_UNSIGNED_SHORT, primitive->indices);
3629          }
3630       }
3631    }
3632
3633    void PushMatrix(Display display)
3634    {
3635       glPushMatrix();
3636    }
3637
3638    void PopMatrix(Display display, bool setMatrix)
3639    {
3640       glPopMatrix();
3641    }
3642
3643    void SetTransform(Display display, Matrix transMatrix, bool viewSpace, bool useCamera)
3644    {
3645       Matrix matrix = transMatrix;
3646       Camera camera = useCamera ? display.display3D.camera : null;
3647
3648       if(viewSpace)
3649       {
3650          glLoadIdentity();
3651          glScalef(1.0f, 1.0f, -1.0f);
3652       }
3653       else if(camera)
3654       {
3655          glTranslated(
3656             matrix.m[3][0] - camera.cPosition.x,
3657             matrix.m[3][1] - camera.cPosition.y,
3658             matrix.m[3][2] - camera.cPosition.z);
3659       }
3660       else
3661          glTranslated(
3662             matrix.m[3][0],
3663             matrix.m[3][1],
3664             matrix.m[3][2]);
3665
3666       matrix.m[3][0] = 0;
3667       matrix.m[3][1] = 0;
3668       matrix.m[3][2] = 0;
3669
3670       glMultMatrixd(matrix.array);
3671    }
3672 #endif
3673 }
3674
3675 public void UseSingleGLContext(bool useSingle)
3676 {
3677    useSingleGLContext = useSingle;
3678 }
3679
3680 #endif