| 1 | /* |
| 2 | * File: indirect.c |
| 3 | * Purpose: A GLX implementation that uses Windows OpenGL library |
| 4 | * |
| 5 | * Authors: Alexander Gottwald |
| 6 | * Jon TURNEY |
| 7 | * |
| 8 | * Copyright (c) Jon TURNEY 2009 |
| 9 | * Copyright (c) Alexander Gottwald 2004 |
| 10 | * |
| 11 | * Portions of this file are copied from GL/apple/indirect.c, |
| 12 | * which contains the following copyright: |
| 13 | * |
| 14 | * Copyright (c) 2007, 2008, 2009 Apple Inc. |
| 15 | * Copyright (c) 2004 Torrey T. Lyons. All Rights Reserved. |
| 16 | * Copyright (c) 2002 Greg Parker. All Rights Reserved. |
| 17 | * |
| 18 | * Portions of this file are copied from Mesa's xf86glx.c, |
| 19 | * which contains the following copyright: |
| 20 | * |
| 21 | * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas. |
| 22 | * All Rights Reserved. |
| 23 | * |
| 24 | * |
| 25 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 26 | * copy of this software and associated documentation files (the "Software"), |
| 27 | * to deal in the Software without restriction, including without limitation |
| 28 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 29 | * and/or sell copies of the Software, and to permit persons to whom the |
| 30 | * Software is furnished to do so, subject to the following conditions: |
| 31 | * |
| 32 | * The above copyright notice and this permission notice shall be included in |
| 33 | * all copies or substantial portions of the Software. |
| 34 | * |
| 35 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 36 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 37 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 38 | * THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 39 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 40 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 41 | * DEALINGS IN THE SOFTWARE. |
| 42 | */ |
| 43 | |
| 44 | /* |
| 45 | TODO: |
| 46 | - hook up remaining unimplemented extensions |
| 47 | - research what guarantees glXWaitX, glXWaitGL are supposed to offer, and implement then |
| 48 | using GdiFlush and/or glFinish |
| 49 | - pbuffer clobbering: we don't get async notification, but can we arrange to emit the |
| 50 | event when we notice it's been clobbered? at the very least, check if it's been clobbered |
| 51 | before using it? |
| 52 | - XGetImage() doesn't work on pixmaps; need to do more work to make the format and location |
| 53 | of the native pixmap compatible |
| 54 | - implement GLX_EXT_texture_from_pixmap in terms of WGL_ARB_render_texture |
| 55 | (not quite straightforward as we will have to create a pbuffer and copy the pixmap texture |
| 56 | into it) |
| 57 | */ |
| 58 | |
| 59 | /* |
| 60 | Assumptions: |
| 61 | - the __GLXConfig * we get handed back ones we are made (so we can extend the structure |
| 62 | with privates) and never get created inside the GLX core |
| 63 | */ |
| 64 | |
| 65 | /* |
| 66 | MSDN clarifications: |
| 67 | |
| 68 | It says SetPixelFormat()'s PIXELFORMATDESCRIPTOR pointer argument has no effect |
| 69 | except on metafiles, this seems to mean that as it's ok to supply NULL if the DC |
| 70 | is not for a metafile |
| 71 | |
| 72 | wglMakeCurrent ignores the hdc if hglrc is NULL, so wglMakeCurrent(NULL, NULL) |
| 73 | is used to make no context current |
| 74 | |
| 75 | */ |
| 76 | |
| 77 | #ifdef HAVE_XWIN_CONFIG_H |
| 78 | #include <xwin-config.h> |
| 79 | #endif |
| 80 | |
| 81 | #include "glwindows.h" |
| 82 | #include <glx/glxserver.h> |
| 83 | #include <glx/glxutil.h> |
| 84 | #include <glx/extension_string.h> |
| 85 | #include <GL/glxtokens.h> |
| 86 | |
| 87 | #include <winpriv.h> |
| 88 | #include <wgl_ext_api.h> |
| 89 | #include <winglobals.h> |
| 90 | |
| 91 | #define NUM_ELEMENTS(x) (sizeof(x)/ sizeof(x[1])) |
| 92 | |
| 93 | /* Not yet in w32api */ |
| 94 | #ifndef PFD_SUPPORT_DIRECTDRAW |
| 95 | #define PFD_SUPPORT_DIRECTDRAW 0x00002000 |
| 96 | #endif |
| 97 | #ifndef PFD_DIRECT3D_ACCELERATED |
| 98 | #define PFD_DIRECT3D_ACCELERATED 0x00004000 |
| 99 | #endif |
| 100 | #ifndef PFD_SUPPORT_COMPOSITION |
| 101 | #define PFD_SUPPORT_COMPOSITION 0x00008000 |
| 102 | #endif |
| 103 | |
| 104 | /* ---------------------------------------------------------------------- */ |
| 105 | /* |
| 106 | * structure definitions |
| 107 | */ |
| 108 | |
| 109 | typedef struct __GLXWinContext __GLXWinContext; |
| 110 | typedef struct __GLXWinDrawable __GLXWinDrawable; |
| 111 | typedef struct __GLXWinScreen glxWinScreen; |
| 112 | typedef struct __GLXWinConfig GLXWinConfig; |
| 113 | |
| 114 | struct __GLXWinContext { |
| 115 | __GLXcontext base; |
| 116 | HGLRC ctx; /* Windows GL Context */ |
| 117 | __GLXWinContext *shareContext; /* Context with which we will share display lists and textures */ |
| 118 | HWND hwnd; /* For detecting when HWND has changed */ |
| 119 | }; |
| 120 | |
| 121 | struct __GLXWinDrawable { |
| 122 | __GLXdrawable base; |
| 123 | __GLXWinContext *drawContext; |
| 124 | __GLXWinContext *readContext; |
| 125 | |
| 126 | /* If this drawable is GLX_DRAWABLE_PBUFFER */ |
| 127 | HPBUFFERARB hPbuffer; |
| 128 | |
| 129 | /* If this drawable is GLX_DRAWABLE_PIXMAP */ |
| 130 | HDC dibDC; |
| 131 | HBITMAP hDIB; |
| 132 | HBITMAP hOldDIB; /* original DIB for DC */ |
| 133 | void *pOldBits; /* original pBits for this drawable's pixmap */ |
| 134 | }; |
| 135 | |
| 136 | struct __GLXWinScreen { |
| 137 | __GLXscreen base; |
| 138 | |
| 139 | /* Supported GLX extensions */ |
| 140 | unsigned char glx_enable_bits[__GLX_EXT_BYTES]; |
| 141 | |
| 142 | Bool has_WGL_ARB_multisample; |
| 143 | Bool has_WGL_ARB_pixel_format; |
| 144 | Bool has_WGL_ARB_pbuffer; |
| 145 | Bool has_WGL_ARB_render_texture; |
| 146 | |
| 147 | /* wrapped screen functions */ |
| 148 | RealizeWindowProcPtr RealizeWindow; |
| 149 | UnrealizeWindowProcPtr UnrealizeWindow; |
| 150 | CopyWindowProcPtr CopyWindow; |
| 151 | }; |
| 152 | |
| 153 | struct __GLXWinConfig { |
| 154 | __GLXconfig base; |
| 155 | int pixelFormatIndex; |
| 156 | }; |
| 157 | |
| 158 | /* ---------------------------------------------------------------------- */ |
| 159 | /* |
| 160 | * Various debug helpers |
| 161 | */ |
| 162 | |
| 163 | #define GLWIN_DEBUG_HWND(hwnd) \ |
| 164 | if (glxWinDebugSettings.dumpHWND) { \ |
| 165 | char buffer[1024]; \ |
| 166 | if (GetWindowText(hwnd, buffer, sizeof(buffer))==0) *buffer=0; \ |
| 167 | GLWIN_DEBUG_MSG("Got HWND %p for window '%s'", hwnd, buffer); \ |
| 168 | } |
| 169 | |
| 170 | glxWinDebugSettingsRec glxWinDebugSettings = { 0, 0, 0, 0, 0, 0 }; |
| 171 | |
| 172 | static void |
| 173 | glxWinInitDebugSettings(void) |
| 174 | { |
| 175 | char *envptr; |
| 176 | |
| 177 | envptr = getenv("GLWIN_ENABLE_DEBUG"); |
| 178 | if (envptr != NULL) |
| 179 | glxWinDebugSettings.enableDebug = (atoi(envptr) == 1); |
| 180 | |
| 181 | envptr = getenv("GLWIN_ENABLE_TRACE"); |
| 182 | if (envptr != NULL) |
| 183 | glxWinDebugSettings.enableTrace = (atoi(envptr) == 1); |
| 184 | |
| 185 | envptr = getenv("GLWIN_DUMP_PFD"); |
| 186 | if (envptr != NULL) |
| 187 | glxWinDebugSettings.dumpPFD = (atoi(envptr) == 1); |
| 188 | |
| 189 | envptr = getenv("GLWIN_DUMP_HWND"); |
| 190 | if (envptr != NULL) |
| 191 | glxWinDebugSettings.dumpHWND = (atoi(envptr) == 1); |
| 192 | |
| 193 | envptr = getenv("GLWIN_DUMP_DC"); |
| 194 | if (envptr != NULL) |
| 195 | glxWinDebugSettings.dumpDC = (atoi(envptr) == 1); |
| 196 | |
| 197 | envptr = getenv("GLWIN_ENABLE_GLCALL_TRACE"); |
| 198 | if (envptr != NULL) |
| 199 | glxWinDebugSettings.enableGLcallTrace = (atoi(envptr) == 1); |
| 200 | |
| 201 | envptr = getenv("GLWIN_ENABLE_WGLCALL_TRACE"); |
| 202 | if (envptr != NULL) |
| 203 | glxWinDebugSettings.enableWGLcallTrace = (atoi(envptr) == 1); |
| 204 | |
| 205 | envptr = getenv("GLWIN_DEBUG_ALL"); |
| 206 | if (envptr != NULL) { |
| 207 | glxWinDebugSettings.enableDebug = 1; |
| 208 | glxWinDebugSettings.enableTrace = 1; |
| 209 | glxWinDebugSettings.dumpPFD = 1; |
| 210 | glxWinDebugSettings.dumpHWND = 1; |
| 211 | glxWinDebugSettings.dumpDC = 1; |
| 212 | glxWinDebugSettings.enableGLcallTrace = 1; |
| 213 | glxWinDebugSettings.enableWGLcallTrace = 1; |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | static |
| 218 | const char * |
| 219 | glxWinErrorMessage(void) |
| 220 | { |
| 221 | static char errorbuffer[1024]; |
| 222 | unsigned int last_error = GetLastError(); |
| 223 | |
| 224 | if (!FormatMessage |
| 225 | (FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS | |
| 226 | FORMAT_MESSAGE_MAX_WIDTH_MASK, NULL, last_error, 0, |
| 227 | (LPTSTR) &errorbuffer, sizeof(errorbuffer), NULL)) { |
| 228 | snprintf(errorbuffer, sizeof(errorbuffer), "Unknown error"); |
| 229 | } |
| 230 | |
| 231 | if ((errorbuffer[strlen(errorbuffer) - 1] == '\n') || |
| 232 | (errorbuffer[strlen(errorbuffer) - 1] == '\r')) |
| 233 | errorbuffer[strlen(errorbuffer) - 1] = 0; |
| 234 | |
| 235 | sprintf(errorbuffer + strlen(errorbuffer), " (%08x)", last_error); |
| 236 | |
| 237 | return errorbuffer; |
| 238 | } |
| 239 | |
| 240 | static void pfdOut(const PIXELFORMATDESCRIPTOR * pfd); |
| 241 | |
| 242 | #define DUMP_PFD_FLAG(flag) \ |
| 243 | if (pfd->dwFlags & flag) { \ |
| 244 | ErrorF("%s%s", pipesym, #flag); \ |
| 245 | pipesym = " | "; \ |
| 246 | } |
| 247 | |
| 248 | static void |
| 249 | pfdOut(const PIXELFORMATDESCRIPTOR * pfd) |
| 250 | { |
| 251 | const char *pipesym = ""; /* will be set after first flag dump */ |
| 252 | |
| 253 | ErrorF("PIXELFORMATDESCRIPTOR:\n"); |
| 254 | ErrorF("nSize = %u\n", pfd->nSize); |
| 255 | ErrorF("nVersion = %u\n", pfd->nVersion); |
| 256 | ErrorF("dwFlags = %lu = {", pfd->dwFlags); |
| 257 | DUMP_PFD_FLAG(PFD_DOUBLEBUFFER); |
| 258 | DUMP_PFD_FLAG(PFD_STEREO); |
| 259 | DUMP_PFD_FLAG(PFD_DRAW_TO_WINDOW); |
| 260 | DUMP_PFD_FLAG(PFD_DRAW_TO_BITMAP); |
| 261 | DUMP_PFD_FLAG(PFD_SUPPORT_GDI); |
| 262 | DUMP_PFD_FLAG(PFD_SUPPORT_OPENGL); |
| 263 | DUMP_PFD_FLAG(PFD_GENERIC_FORMAT); |
| 264 | DUMP_PFD_FLAG(PFD_NEED_PALETTE); |
| 265 | DUMP_PFD_FLAG(PFD_NEED_SYSTEM_PALETTE); |
| 266 | DUMP_PFD_FLAG(PFD_SWAP_EXCHANGE); |
| 267 | DUMP_PFD_FLAG(PFD_SWAP_COPY); |
| 268 | DUMP_PFD_FLAG(PFD_SWAP_LAYER_BUFFERS); |
| 269 | DUMP_PFD_FLAG(PFD_GENERIC_ACCELERATED); |
| 270 | DUMP_PFD_FLAG(PFD_SUPPORT_DIRECTDRAW); |
| 271 | DUMP_PFD_FLAG(PFD_DIRECT3D_ACCELERATED); |
| 272 | DUMP_PFD_FLAG(PFD_SUPPORT_COMPOSITION); |
| 273 | DUMP_PFD_FLAG(PFD_DEPTH_DONTCARE); |
| 274 | DUMP_PFD_FLAG(PFD_DOUBLEBUFFER_DONTCARE); |
| 275 | DUMP_PFD_FLAG(PFD_STEREO_DONTCARE); |
| 276 | ErrorF("}\n"); |
| 277 | |
| 278 | ErrorF("iPixelType = %hu = %s\n", pfd->iPixelType, |
| 279 | (pfd->iPixelType == |
| 280 | PFD_TYPE_RGBA ? "PFD_TYPE_RGBA" : "PFD_TYPE_COLORINDEX")); |
| 281 | ErrorF("cColorBits = %hhu\n", pfd->cColorBits); |
| 282 | ErrorF("cRedBits = %hhu\n", pfd->cRedBits); |
| 283 | ErrorF("cRedShift = %hhu\n", pfd->cRedShift); |
| 284 | ErrorF("cGreenBits = %hhu\n", pfd->cGreenBits); |
| 285 | ErrorF("cGreenShift = %hhu\n", pfd->cGreenShift); |
| 286 | ErrorF("cBlueBits = %hhu\n", pfd->cBlueBits); |
| 287 | ErrorF("cBlueShift = %hhu\n", pfd->cBlueShift); |
| 288 | ErrorF("cAlphaBits = %hhu\n", pfd->cAlphaBits); |
| 289 | ErrorF("cAlphaShift = %hhu\n", pfd->cAlphaShift); |
| 290 | ErrorF("cAccumBits = %hhu\n", pfd->cAccumBits); |
| 291 | ErrorF("cAccumRedBits = %hhu\n", pfd->cAccumRedBits); |
| 292 | ErrorF("cAccumGreenBits = %hhu\n", pfd->cAccumGreenBits); |
| 293 | ErrorF("cAccumBlueBits = %hhu\n", pfd->cAccumBlueBits); |
| 294 | ErrorF("cAccumAlphaBits = %hhu\n", pfd->cAccumAlphaBits); |
| 295 | ErrorF("cDepthBits = %hhu\n", pfd->cDepthBits); |
| 296 | ErrorF("cStencilBits = %hhu\n", pfd->cStencilBits); |
| 297 | ErrorF("cAuxBuffers = %hhu\n", pfd->cAuxBuffers); |
| 298 | ErrorF("iLayerType = %hhu\n", pfd->iLayerType); |
| 299 | ErrorF("bReserved = %hhu\n", pfd->bReserved); |
| 300 | ErrorF("dwLayerMask = %lu\n", pfd->dwLayerMask); |
| 301 | ErrorF("dwVisibleMask = %lu\n", pfd->dwVisibleMask); |
| 302 | ErrorF("dwDamageMask = %lu\n", pfd->dwDamageMask); |
| 303 | ErrorF("\n"); |
| 304 | } |
| 305 | |
| 306 | static const char * |
| 307 | visual_class_name(int cls) |
| 308 | { |
| 309 | switch (cls) { |
| 310 | case GLX_STATIC_COLOR: |
| 311 | return "StaticColor"; |
| 312 | case GLX_PSEUDO_COLOR: |
| 313 | return "PseudoColor"; |
| 314 | case GLX_STATIC_GRAY: |
| 315 | return "StaticGray"; |
| 316 | case GLX_GRAY_SCALE: |
| 317 | return "GrayScale"; |
| 318 | case GLX_TRUE_COLOR: |
| 319 | return "TrueColor"; |
| 320 | case GLX_DIRECT_COLOR: |
| 321 | return "DirectColor"; |
| 322 | default: |
| 323 | return "-none-"; |
| 324 | } |
| 325 | } |
| 326 | |
| 327 | static const char * |
| 328 | swap_method_name(int mthd) |
| 329 | { |
| 330 | switch (mthd) { |
| 331 | case GLX_SWAP_EXCHANGE_OML: |
| 332 | return "xchg"; |
| 333 | case GLX_SWAP_COPY_OML: |
| 334 | return "copy"; |
| 335 | case GLX_SWAP_UNDEFINED_OML: |
| 336 | return " "; |
| 337 | default: |
| 338 | return "????"; |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | static void |
| 343 | fbConfigsDump(unsigned int n, __GLXconfig * c) |
| 344 | { |
| 345 | LogMessage(X_INFO, "%d fbConfigs\n", n); |
| 346 | |
| 347 | if (g_iLogVerbose < 3) |
| 348 | return; |
| 349 | ErrorF("%d fbConfigs\n", n); |
| 350 | ErrorF |
| 351 | ("pxf vis fb render Ste aux accum MS drawable Group/\n"); |
| 352 | ErrorF |
| 353 | ("idx ID ID VisualType Depth Lvl RGB CI DB Swap reo R G B A Z S buf AR AG AB AA bufs num W P Pb Float Trans Caveat\n"); |
| 354 | ErrorF |
| 355 | ("-----------------------------------------------------------------------------------------------------------------------------\n"); |
| 356 | |
| 357 | while (c != NULL) { |
| 358 | unsigned int i = ((GLXWinConfig *) c)->pixelFormatIndex; |
| 359 | |
| 360 | ErrorF("%3d %3x %3x " |
| 361 | "%-11s" |
| 362 | " %3d %3d %s %s %s %s %s " |
| 363 | "%2d %2d %2d %2d " |
| 364 | "%2d %2d " |
| 365 | "%2d " |
| 366 | "%2d %2d %2d %2d" |
| 367 | " %2d %2d" |
| 368 | " %s %s %s " |
| 369 | " %s " |
| 370 | " %s " |
| 371 | " %d %s" |
| 372 | "\n", |
| 373 | i, c->visualID, c->fbconfigID, |
| 374 | visual_class_name(c->visualType), |
| 375 | c->rgbBits ? c->rgbBits : c->indexBits, |
| 376 | c->level, |
| 377 | (c->renderType & GLX_RGBA_BIT) ? "y" : ".", |
| 378 | (c->renderType & GLX_COLOR_INDEX_BIT) ? "y" : ".", |
| 379 | c->doubleBufferMode ? "y" : ".", |
| 380 | swap_method_name(c->swapMethod), |
| 381 | c->stereoMode ? "y" : ".", |
| 382 | c->redBits, c->greenBits, c->blueBits, c->alphaBits, |
| 383 | c->depthBits, c->stencilBits, |
| 384 | c->numAuxBuffers, |
| 385 | c->accumRedBits, c->accumGreenBits, c->accumBlueBits, |
| 386 | c->accumAlphaBits, c->sampleBuffers, c->samples, |
| 387 | (c->drawableType & GLX_WINDOW_BIT) ? "y" : ".", |
| 388 | (c->drawableType & GLX_PIXMAP_BIT) ? "y" : ".", |
| 389 | (c->drawableType & GLX_PBUFFER_BIT) ? "y" : ".", |
| 390 | (c->renderType & (GLX_RGBA_FLOAT_BIT_ARB | |
| 391 | GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT)) ? "y" : ".", |
| 392 | (c->transparentPixel != GLX_NONE_EXT) ? "y" : ".", |
| 393 | c->visualSelectGroup, |
| 394 | (c->visualRating == GLX_SLOW_VISUAL_EXT) ? "*" : " "); |
| 395 | |
| 396 | c = c->next; |
| 397 | } |
| 398 | } |
| 399 | |
| 400 | /* ---------------------------------------------------------------------- */ |
| 401 | /* |
| 402 | * Forward declarations |
| 403 | */ |
| 404 | |
| 405 | static __GLXscreen *glxWinScreenProbe(ScreenPtr pScreen); |
| 406 | static __GLXcontext *glxWinCreateContext(__GLXscreen * screen, |
| 407 | __GLXconfig * modes, |
| 408 | __GLXcontext * baseShareContext, |
| 409 | unsigned num_attribs, |
| 410 | const uint32_t * attribs, int *error); |
| 411 | static __GLXdrawable *glxWinCreateDrawable(ClientPtr client, |
| 412 | __GLXscreen * screen, |
| 413 | DrawablePtr pDraw, |
| 414 | XID drawId, |
| 415 | int type, |
| 416 | XID glxDrawId, __GLXconfig * conf); |
| 417 | |
| 418 | static Bool glxWinRealizeWindow(WindowPtr pWin); |
| 419 | static Bool glxWinUnrealizeWindow(WindowPtr pWin); |
| 420 | static void glxWinCopyWindow(WindowPtr pWindow, DDXPointRec ptOldOrg, |
| 421 | RegionPtr prgnSrc); |
| 422 | |
| 423 | static HDC glxWinMakeDC(__GLXWinContext * gc, __GLXWinDrawable * draw, |
| 424 | HDC * hdc, HWND * hwnd); |
| 425 | static void glxWinReleaseDC(HWND hwnd, HDC hdc, __GLXWinDrawable * draw); |
| 426 | |
| 427 | static void glxWinCreateConfigs(HDC dc, glxWinScreen * screen); |
| 428 | static void glxWinCreateConfigsExt(HDC hdc, glxWinScreen * screen); |
| 429 | static int fbConfigToPixelFormat(__GLXconfig * mode, |
| 430 | PIXELFORMATDESCRIPTOR * pfdret, |
| 431 | int drawableTypeOverride); |
| 432 | static int fbConfigToPixelFormatIndex(HDC hdc, __GLXconfig * mode, |
| 433 | int drawableTypeOverride, |
| 434 | glxWinScreen * winScreen); |
| 435 | |
| 436 | /* ---------------------------------------------------------------------- */ |
| 437 | /* |
| 438 | * The GLX provider |
| 439 | */ |
| 440 | |
| 441 | __GLXprovider __glXWGLProvider = { |
| 442 | glxWinScreenProbe, |
| 443 | "Win32 native WGL", |
| 444 | NULL |
| 445 | }; |
| 446 | |
| 447 | void |
| 448 | glxWinPushNativeProvider(void) |
| 449 | { |
| 450 | GlxPushProvider(&__glXWGLProvider); |
| 451 | } |
| 452 | |
| 453 | /* ---------------------------------------------------------------------- */ |
| 454 | /* |
| 455 | * Screen functions |
| 456 | */ |
| 457 | |
| 458 | static void |
| 459 | glxWinScreenDestroy(__GLXscreen * screen) |
| 460 | { |
| 461 | GLWIN_DEBUG_MSG("glxWinScreenDestroy(%p)", screen); |
| 462 | __glXScreenDestroy(screen); |
| 463 | free(screen); |
| 464 | } |
| 465 | |
| 466 | static int |
| 467 | glxWinScreenSwapInterval(__GLXdrawable * drawable, int interval) |
| 468 | { |
| 469 | BOOL ret = wglSwapIntervalEXTWrapper(interval); |
| 470 | |
| 471 | if (!ret) { |
| 472 | ErrorF("wglSwapIntervalEXT interval %d failed:%s\n", interval, |
| 473 | glxWinErrorMessage()); |
| 474 | } |
| 475 | return ret; |
| 476 | } |
| 477 | |
| 478 | /* |
| 479 | Report the extensions split and formatted to avoid overflowing a line |
| 480 | */ |
| 481 | static void |
| 482 | glxLogExtensions(const char *prefix, const char *extensions) |
| 483 | { |
| 484 | int length = 0; |
| 485 | const char *strl; |
| 486 | char *str = strdup(extensions); |
| 487 | |
| 488 | if (str == NULL) { |
| 489 | ErrorF("glxLogExtensions: xalloc error\n"); |
| 490 | return; |
| 491 | } |
| 492 | |
| 493 | strl = strtok(str, " "); |
| 494 | if (strl == NULL) |
| 495 | strl = ""; |
| 496 | ErrorF("%s%s", prefix, strl); |
| 497 | length = strlen(prefix) + strlen(strl); |
| 498 | |
| 499 | while (1) { |
| 500 | strl = strtok(NULL, " "); |
| 501 | if (strl == NULL) |
| 502 | break; |
| 503 | |
| 504 | if (length + strlen(strl) + 1 > 120) { |
| 505 | ErrorF("\n"); |
| 506 | ErrorF("%s", prefix); |
| 507 | length = strlen(prefix); |
| 508 | } |
| 509 | else { |
| 510 | ErrorF(" "); |
| 511 | length++; |
| 512 | } |
| 513 | |
| 514 | ErrorF("%s", strl); |
| 515 | length = length + strlen(strl); |
| 516 | } |
| 517 | |
| 518 | ErrorF("\n"); |
| 519 | |
| 520 | free(str); |
| 521 | } |
| 522 | |
| 523 | /* This is called by GlxExtensionInit() asking the GLX provider if it can handle the screen... */ |
| 524 | static __GLXscreen * |
| 525 | glxWinScreenProbe(ScreenPtr pScreen) |
| 526 | { |
| 527 | glxWinScreen *screen; |
| 528 | const char *gl_extensions; |
| 529 | const char *gl_renderer; |
| 530 | const char *wgl_extensions; |
| 531 | HWND hwnd; |
| 532 | HDC hdc; |
| 533 | HGLRC hglrc; |
| 534 | |
| 535 | GLWIN_DEBUG_MSG("glxWinScreenProbe"); |
| 536 | |
| 537 | glxWinInitDebugSettings(); |
| 538 | |
| 539 | if (pScreen == NULL) |
| 540 | return NULL; |
| 541 | |
| 542 | if (!winCheckScreenAiglxIsSupported(pScreen)) { |
| 543 | LogMessage(X_ERROR, |
| 544 | "AIGLX: No native OpenGL in modes with a root window\n"); |
| 545 | return NULL; |
| 546 | } |
| 547 | |
| 548 | screen = calloc(1, sizeof(glxWinScreen)); |
| 549 | |
| 550 | if (NULL == screen) |
| 551 | return NULL; |
| 552 | |
| 553 | // Select the native GL implementation (WGL) |
| 554 | if (glWinSelectImplementation(1)) |
| 555 | return NULL; |
| 556 | |
| 557 | // create window class |
| 558 | #define WIN_GL_TEST_WINDOW_CLASS "XWinGLTest" |
| 559 | { |
| 560 | static wATOM glTestWndClass = 0; |
| 561 | |
| 562 | if (glTestWndClass == 0) { |
| 563 | WNDCLASSEX wc; |
| 564 | |
| 565 | wc.cbSize = sizeof(WNDCLASSEX); |
| 566 | wc.style = CS_HREDRAW | CS_VREDRAW; |
| 567 | wc.lpfnWndProc = DefWindowProc; |
| 568 | wc.cbClsExtra = 0; |
| 569 | wc.cbWndExtra = 0; |
| 570 | wc.hInstance = GetModuleHandle(NULL); |
| 571 | wc.hIcon = 0; |
| 572 | wc.hCursor = 0; |
| 573 | wc.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH); |
| 574 | wc.lpszMenuName = NULL; |
| 575 | wc.lpszClassName = WIN_GL_TEST_WINDOW_CLASS; |
| 576 | wc.hIconSm = 0; |
| 577 | RegisterClassEx(&wc); |
| 578 | } |
| 579 | } |
| 580 | |
| 581 | // create an invisible window for a scratch DC |
| 582 | hwnd = CreateWindowExA(0, |
| 583 | WIN_GL_TEST_WINDOW_CLASS, |
| 584 | "XWin GL Renderer Capabilities Test Window", |
| 585 | 0, 0, 0, 0, 0, NULL, NULL, GetModuleHandle(NULL), |
| 586 | NULL); |
| 587 | if (hwnd == NULL) |
| 588 | LogMessage(X_ERROR, |
| 589 | "AIGLX: Couldn't create a window for render capabilities testing\n"); |
| 590 | |
| 591 | hdc = GetDC(hwnd); |
| 592 | |
| 593 | // we must set a pixel format before we can create a context, just use the first one... |
| 594 | SetPixelFormat(hdc, 1, NULL); |
| 595 | hglrc = wglCreateContext(hdc); |
| 596 | wglMakeCurrent(hdc, hglrc); |
| 597 | |
| 598 | // initialize wgl extension proc pointers (don't call them before here...) |
| 599 | // (but we need to have a current context for them to be resolvable) |
| 600 | wglResolveExtensionProcs(); |
| 601 | |
| 602 | /* Dump out some useful information about the native renderer */ |
| 603 | ErrorF("GL_VERSION: %s\n", glGetString(GL_VERSION)); |
| 604 | ErrorF("GL_VENDOR: %s\n", glGetString(GL_VENDOR)); |
| 605 | gl_renderer = (const char *) glGetString(GL_RENDERER); |
| 606 | ErrorF("GL_RENDERER: %s\n", gl_renderer); |
| 607 | gl_extensions = (const char *) glGetString(GL_EXTENSIONS); |
| 608 | wgl_extensions = wglGetExtensionsStringARBWrapper(hdc); |
| 609 | if (!wgl_extensions) |
| 610 | wgl_extensions = ""; |
| 611 | |
| 612 | if (g_iLogVerbose >= 3) { |
| 613 | glxLogExtensions("GL_EXTENSIONS: ", gl_extensions); |
| 614 | glxLogExtensions("WGL_EXTENSIONS: ", wgl_extensions); |
| 615 | } |
| 616 | |
| 617 | if (strcasecmp(gl_renderer, "GDI Generic") == 0) { |
| 618 | free(screen); |
| 619 | LogMessage(X_ERROR, |
| 620 | "AIGLX: Won't use generic native renderer as it is not accelerated\n"); |
| 621 | goto error; |
| 622 | } |
| 623 | |
| 624 | // Can you see the problem here? The extensions string is DC specific |
| 625 | // Different DCs for windows on a multimonitor system driven by multiple cards |
| 626 | // might have completely different capabilities. Of course, good luck getting |
| 627 | // those screens to be accelerated in XP and earlier... |
| 628 | |
| 629 | { |
| 630 | // testing facility to not use any WGL extensions |
| 631 | char *envptr = getenv("GLWIN_NO_WGL_EXTENSIONS"); |
| 632 | |
| 633 | if ((envptr != NULL) && (atoi(envptr) != 0)) { |
| 634 | ErrorF("GLWIN_NO_WGL_EXTENSIONS is set, ignoring WGL_EXTENSIONS\n"); |
| 635 | wgl_extensions = ""; |
| 636 | } |
| 637 | } |
| 638 | |
| 639 | { |
| 640 | Bool glx_sgi_make_current_read = FALSE; |
| 641 | |
| 642 | // |
| 643 | // Based on the WGL extensions available, enable various GLX extensions |
| 644 | // XXX: make this table-driven ? |
| 645 | // |
| 646 | memset(screen->glx_enable_bits, 0, __GLX_EXT_BYTES); |
| 647 | |
| 648 | __glXEnableExtension(screen->glx_enable_bits, "GLX_EXT_visual_info"); |
| 649 | __glXEnableExtension(screen->glx_enable_bits, "GLX_EXT_visual_rating"); |
| 650 | __glXEnableExtension(screen->glx_enable_bits, "GLX_EXT_import_context"); |
| 651 | __glXEnableExtension(screen->glx_enable_bits, "GLX_OML_swap_method"); |
| 652 | __glXEnableExtension(screen->glx_enable_bits, "GLX_SGIX_fbconfig"); |
| 653 | |
| 654 | if (strstr(wgl_extensions, "WGL_ARB_make_current_read")) { |
| 655 | __glXEnableExtension(screen->glx_enable_bits, |
| 656 | "GLX_SGI_make_current_read"); |
| 657 | LogMessage(X_INFO, "AIGLX: enabled GLX_SGI_make_current_read\n"); |
| 658 | glx_sgi_make_current_read = TRUE; |
| 659 | } |
| 660 | |
| 661 | if (strstr(gl_extensions, "GL_WIN_swap_hint")) { |
| 662 | __glXEnableExtension(screen->glx_enable_bits, |
| 663 | "GLX_MESA_copy_sub_buffer"); |
| 664 | LogMessage(X_INFO, "AIGLX: enabled GLX_MESA_copy_sub_buffer\n"); |
| 665 | } |
| 666 | |
| 667 | if (strstr(wgl_extensions, "WGL_EXT_swap_control")) { |
| 668 | __glXEnableExtension(screen->glx_enable_bits, |
| 669 | "GLX_SGI_swap_control"); |
| 670 | __glXEnableExtension(screen->glx_enable_bits, |
| 671 | "GLX_MESA_swap_control"); |
| 672 | LogMessage(X_INFO, |
| 673 | "AIGLX: enabled GLX_SGI_swap_control and GLX_MESA_swap_control\n"); |
| 674 | } |
| 675 | |
| 676 | /* // Hmm? screen->texOffset */ |
| 677 | /* if (strstr(wgl_extensions, "WGL_ARB_render_texture")) */ |
| 678 | /* { */ |
| 679 | /* __glXEnableExtension(screen->glx_enable_bits, "GLX_EXT_texture_from_pixmap"); */ |
| 680 | /* LogMessage(X_INFO, "AIGLX: GLX_EXT_texture_from_pixmap backed by buffer objects\n"); */ |
| 681 | /* screen->has_WGL_ARB_render_texture = TRUE; */ |
| 682 | /* } */ |
| 683 | |
| 684 | if (strstr(wgl_extensions, "WGL_ARB_pbuffer")) { |
| 685 | __glXEnableExtension(screen->glx_enable_bits, "GLX_SGIX_pbuffer"); |
| 686 | LogMessage(X_INFO, "AIGLX: enabled GLX_SGIX_pbuffer\n"); |
| 687 | screen->has_WGL_ARB_pbuffer = TRUE; |
| 688 | } |
| 689 | |
| 690 | if (strstr(wgl_extensions, "WGL_ARB_multisample")) { |
| 691 | __glXEnableExtension(screen->glx_enable_bits, |
| 692 | "GLX_ARB_multisample"); |
| 693 | __glXEnableExtension(screen->glx_enable_bits, |
| 694 | "GLX_SGIS_multisample"); |
| 695 | LogMessage(X_INFO, |
| 696 | "AIGLX: enabled GLX_ARB_multisample and GLX_SGIS_multisample\n"); |
| 697 | screen->has_WGL_ARB_multisample = TRUE; |
| 698 | } |
| 699 | |
| 700 | screen->base.destroy = glxWinScreenDestroy; |
| 701 | screen->base.createContext = glxWinCreateContext; |
| 702 | screen->base.createDrawable = glxWinCreateDrawable; |
| 703 | screen->base.swapInterval = glxWinScreenSwapInterval; |
| 704 | screen->base.pScreen = pScreen; |
| 705 | |
| 706 | // Creating the fbConfigs initializes screen->base.fbconfigs and screen->base.numFBConfigs |
| 707 | if (strstr(wgl_extensions, "WGL_ARB_pixel_format")) { |
| 708 | glxWinCreateConfigsExt(hdc, screen); |
| 709 | |
| 710 | /* |
| 711 | Some graphics drivers appear to advertise WGL_ARB_pixel_format, |
| 712 | but it doesn't work usefully, so we have to be prepared for it |
| 713 | to fail and fall back to using DescribePixelFormat() |
| 714 | */ |
| 715 | if (screen->base.numFBConfigs > 0) { |
| 716 | screen->has_WGL_ARB_pixel_format = TRUE; |
| 717 | } |
| 718 | } |
| 719 | |
| 720 | if (screen->base.numFBConfigs <= 0) { |
| 721 | glxWinCreateConfigs(hdc, screen); |
| 722 | screen->has_WGL_ARB_pixel_format = FALSE; |
| 723 | } |
| 724 | |
| 725 | /* |
| 726 | If we still didn't get any fbConfigs, we can't provide GLX for this screen |
| 727 | */ |
| 728 | if (screen->base.numFBConfigs <= 0) { |
| 729 | free(screen); |
| 730 | LogMessage(X_ERROR, |
| 731 | "AIGLX: No fbConfigs could be made from native OpenGL pixel formats\n"); |
| 732 | goto error; |
| 733 | } |
| 734 | |
| 735 | /* These will be set by __glXScreenInit */ |
| 736 | screen->base.visuals = NULL; |
| 737 | screen->base.numVisuals = 0; |
| 738 | |
| 739 | __glXScreenInit(&screen->base, pScreen); |
| 740 | |
| 741 | // Override the GL extensions string set by __glXScreenInit() |
| 742 | screen->base.GLextensions = strdup(gl_extensions); |
| 743 | |
| 744 | // Generate the GLX extensions string (overrides that set by __glXScreenInit()) |
| 745 | { |
| 746 | unsigned int buffer_size = |
| 747 | __glXGetExtensionString(screen->glx_enable_bits, NULL); |
| 748 | if (buffer_size > 0) { |
| 749 | free(screen->base.GLXextensions); |
| 750 | |
| 751 | screen->base.GLXextensions = xnfalloc(buffer_size); |
| 752 | __glXGetExtensionString(screen->glx_enable_bits, |
| 753 | screen->base.GLXextensions); |
| 754 | } |
| 755 | } |
| 756 | |
| 757 | // |
| 758 | // Override the GLX version (__glXScreenInit() sets it to "1.2") |
| 759 | // if we have all the needed extensions to operate as a higher version |
| 760 | // |
| 761 | // SGIX_fbconfig && SGIX_pbuffer && SGI_make_current_read -> 1.3 |
| 762 | // ARB_multisample -> 1.4 |
| 763 | // |
| 764 | if (screen->has_WGL_ARB_pbuffer && glx_sgi_make_current_read) { |
| 765 | if (screen->has_WGL_ARB_multisample) { |
| 766 | screen->base.GLXmajor = 1; |
| 767 | screen->base.GLXminor = 4; |
| 768 | } |
| 769 | else { |
| 770 | screen->base.GLXmajor = 1; |
| 771 | screen->base.GLXminor = 3; |
| 772 | } |
| 773 | } |
| 774 | } |
| 775 | LogMessage(X_INFO, "AIGLX: Set GLX version to %d.%d\n", |
| 776 | screen->base.GLXmajor, screen->base.GLXminor); |
| 777 | |
| 778 | wglMakeCurrent(NULL, NULL); |
| 779 | wglDeleteContext(hglrc); |
| 780 | ReleaseDC(hwnd, hdc); |
| 781 | DestroyWindow(hwnd); |
| 782 | |
| 783 | // dump out fbConfigs now fbConfigIds and visualIDs have been assigned |
| 784 | fbConfigsDump(screen->base.numFBConfigs, screen->base.fbconfigs); |
| 785 | |
| 786 | /* Wrap RealizeWindow, UnrealizeWindow and CopyWindow on this screen */ |
| 787 | screen->RealizeWindow = pScreen->RealizeWindow; |
| 788 | pScreen->RealizeWindow = glxWinRealizeWindow; |
| 789 | screen->UnrealizeWindow = pScreen->UnrealizeWindow; |
| 790 | pScreen->UnrealizeWindow = glxWinUnrealizeWindow; |
| 791 | screen->CopyWindow = pScreen->CopyWindow; |
| 792 | pScreen->CopyWindow = glxWinCopyWindow; |
| 793 | |
| 794 | return &screen->base; |
| 795 | |
| 796 | error: |
| 797 | // Something went wrong and we can't use the native GL implementation |
| 798 | // so make sure the mesa GL implementation is selected instead |
| 799 | glWinSelectImplementation(0); |
| 800 | |
| 801 | return NULL; |
| 802 | } |
| 803 | |
| 804 | /* ---------------------------------------------------------------------- */ |
| 805 | /* |
| 806 | * Window functions |
| 807 | */ |
| 808 | |
| 809 | static Bool |
| 810 | glxWinRealizeWindow(WindowPtr pWin) |
| 811 | { |
| 812 | Bool result; |
| 813 | ScreenPtr pScreen = pWin->drawable.pScreen; |
| 814 | glxWinScreen *screenPriv = (glxWinScreen *) glxGetScreen(pScreen); |
| 815 | |
| 816 | GLWIN_DEBUG_MSG("glxWinRealizeWindow"); |
| 817 | |
| 818 | /* Allow the window to be created (RootlessRealizeWindow is inside our wrap) */ |
| 819 | pScreen->RealizeWindow = screenPriv->RealizeWindow; |
| 820 | result = pScreen->RealizeWindow(pWin); |
| 821 | pScreen->RealizeWindow = glxWinRealizeWindow; |
| 822 | |
| 823 | return result; |
| 824 | } |
| 825 | |
| 826 | static void |
| 827 | glxWinCopyWindow(WindowPtr pWindow, DDXPointRec ptOldOrg, RegionPtr prgnSrc) |
| 828 | { |
| 829 | __GLXWinDrawable *pGlxDraw; |
| 830 | ScreenPtr pScreen = pWindow->drawable.pScreen; |
| 831 | glxWinScreen *screenPriv = (glxWinScreen *) glxGetScreen(pScreen); |
| 832 | |
| 833 | GLWIN_TRACE_MSG("glxWinCopyWindow pWindow %p", pWindow); |
| 834 | |
| 835 | dixLookupResourceByType((pointer) &pGlxDraw, pWindow->drawable.id, |
| 836 | __glXDrawableRes, NullClient, DixUnknownAccess); |
| 837 | |
| 838 | /* |
| 839 | Discard any CopyWindow requests if a GL drawing context is pointing at the window |
| 840 | |
| 841 | For regions which are being drawn by GL, the shadow framebuffer doesn't have the |
| 842 | correct bits, so we wish to avoid shadow framebuffer damage occuring, which will |
| 843 | cause those incorrect bits to be transferred to the display.... |
| 844 | */ |
| 845 | if (pGlxDraw && pGlxDraw->drawContext) { |
| 846 | GLWIN_DEBUG_MSG("glxWinCopyWindow: discarding"); |
| 847 | return; |
| 848 | } |
| 849 | |
| 850 | GLWIN_DEBUG_MSG("glxWinCopyWindow - passing to hw layer"); |
| 851 | |
| 852 | pScreen->CopyWindow = screenPriv->CopyWindow; |
| 853 | pScreen->CopyWindow(pWindow, ptOldOrg, prgnSrc); |
| 854 | pScreen->CopyWindow = glxWinCopyWindow; |
| 855 | } |
| 856 | |
| 857 | static Bool |
| 858 | glxWinUnrealizeWindow(WindowPtr pWin) |
| 859 | { |
| 860 | Bool result; |
| 861 | ScreenPtr pScreen = pWin->drawable.pScreen; |
| 862 | glxWinScreen *screenPriv = (glxWinScreen *) glxGetScreen(pScreen); |
| 863 | |
| 864 | GLWIN_DEBUG_MSG("glxWinUnrealizeWindow"); |
| 865 | |
| 866 | pScreen->UnrealizeWindow = screenPriv->UnrealizeWindow; |
| 867 | result = pScreen->UnrealizeWindow(pWin); |
| 868 | pScreen->UnrealizeWindow = glxWinUnrealizeWindow; |
| 869 | |
| 870 | return result; |
| 871 | } |
| 872 | |
| 873 | /* ---------------------------------------------------------------------- */ |
| 874 | /* |
| 875 | * Drawable functions |
| 876 | */ |
| 877 | |
| 878 | static GLboolean |
| 879 | glxWinDrawableSwapBuffers(ClientPtr client, __GLXdrawable * base) |
| 880 | { |
| 881 | HDC dc; |
| 882 | HWND hwnd; |
| 883 | BOOL ret; |
| 884 | __GLXWinDrawable *draw = (__GLXWinDrawable *) base; |
| 885 | |
| 886 | /* Swap buffers on the last active context for drawing on the drawable */ |
| 887 | if (draw->drawContext == NULL) { |
| 888 | GLWIN_TRACE_MSG("glxWinSwapBuffers - no context for drawable"); |
| 889 | return GL_FALSE; |
| 890 | } |
| 891 | |
| 892 | GLWIN_TRACE_MSG |
| 893 | ("glxWinSwapBuffers on drawable %p, last context %p (native ctx %p)", |
| 894 | base, draw->drawContext, draw->drawContext->ctx); |
| 895 | |
| 896 | /* |
| 897 | draw->drawContext->base.drawPriv will not be set if the context is not current anymore, |
| 898 | but if it is, it should point to this drawable.... |
| 899 | */ |
| 900 | assert((draw->drawContext->base.drawPriv == NULL) || |
| 901 | (draw->drawContext->base.drawPriv == base)); |
| 902 | |
| 903 | dc = glxWinMakeDC(draw->drawContext, draw, &dc, &hwnd); |
| 904 | if (dc == NULL) |
| 905 | return GL_FALSE; |
| 906 | |
| 907 | ret = wglSwapLayerBuffers(dc, WGL_SWAP_MAIN_PLANE); |
| 908 | |
| 909 | glxWinReleaseDC(hwnd, dc, draw); |
| 910 | |
| 911 | if (!ret) { |
| 912 | ErrorF("wglSwapBuffers failed: %s\n", glxWinErrorMessage()); |
| 913 | return GL_FALSE; |
| 914 | } |
| 915 | |
| 916 | return GL_TRUE; |
| 917 | } |
| 918 | |
| 919 | static void |
| 920 | glxWinDrawableCopySubBuffer(__GLXdrawable * drawable, |
| 921 | int x, int y, int w, int h) |
| 922 | { |
| 923 | glAddSwapHintRectWINWrapper(x, y, w, h); |
| 924 | glxWinDrawableSwapBuffers(NULL, drawable); |
| 925 | } |
| 926 | |
| 927 | static void |
| 928 | glxWinDrawableDestroy(__GLXdrawable * base) |
| 929 | { |
| 930 | __GLXWinDrawable *glxPriv = (__GLXWinDrawable *) base; |
| 931 | |
| 932 | if (glxPriv->drawContext && |
| 933 | (__glXLastContext == &((glxPriv->drawContext)->base))) { |
| 934 | // if this context is current and has unflushed commands, say we have flushed them |
| 935 | // (don't actually flush them, the window is going away anyhow, and an implict flush occurs |
| 936 | // on the next context change) |
| 937 | // (GLX core considers it an error when we try to select a new current context if the old one |
| 938 | // has unflushed commands, but the window has disappeared..) |
| 939 | __glXLastContext->hasUnflushedCommands = FALSE; |
| 940 | __glXLastContext = NULL; |
| 941 | } |
| 942 | |
| 943 | if (glxPriv->hPbuffer) |
| 944 | if (!wglDestroyPbufferARBWrapper(glxPriv->hPbuffer)) { |
| 945 | ErrorF("wglDestroyPbufferARB failed: %s\n", glxWinErrorMessage()); |
| 946 | } |
| 947 | |
| 948 | if (glxPriv->dibDC) { |
| 949 | // restore the default DIB |
| 950 | SelectObject(glxPriv->dibDC, glxPriv->hOldDIB); |
| 951 | |
| 952 | if (!DeleteDC(glxPriv->dibDC)) { |
| 953 | ErrorF("DeleteDC failed: %s\n", glxWinErrorMessage()); |
| 954 | } |
| 955 | } |
| 956 | |
| 957 | if (glxPriv->hDIB) { |
| 958 | if (!DeleteObject(glxPriv->hDIB)) { |
| 959 | ErrorF("DeleteObject failed: %s\n", glxWinErrorMessage()); |
| 960 | } |
| 961 | |
| 962 | ((PixmapPtr) glxPriv->base.pDraw)->devPrivate.ptr = glxPriv->pOldBits; |
| 963 | } |
| 964 | |
| 965 | GLWIN_DEBUG_MSG("glxWinDestroyDrawable"); |
| 966 | free(glxPriv); |
| 967 | } |
| 968 | |
| 969 | static __GLXdrawable * |
| 970 | glxWinCreateDrawable(ClientPtr client, |
| 971 | __GLXscreen * screen, |
| 972 | DrawablePtr pDraw, |
| 973 | XID drawId, int type, XID glxDrawId, __GLXconfig * conf) |
| 974 | { |
| 975 | __GLXWinDrawable *glxPriv; |
| 976 | |
| 977 | glxPriv = malloc(sizeof *glxPriv); |
| 978 | |
| 979 | if (glxPriv == NULL) |
| 980 | return NULL; |
| 981 | |
| 982 | memset(glxPriv, 0, sizeof *glxPriv); |
| 983 | |
| 984 | if (!__glXDrawableInit |
| 985 | (&glxPriv->base, screen, pDraw, type, glxDrawId, conf)) { |
| 986 | free(glxPriv); |
| 987 | return NULL; |
| 988 | } |
| 989 | |
| 990 | glxPriv->base.destroy = glxWinDrawableDestroy; |
| 991 | glxPriv->base.swapBuffers = glxWinDrawableSwapBuffers; |
| 992 | glxPriv->base.copySubBuffer = glxWinDrawableCopySubBuffer; |
| 993 | // glxPriv->base.waitX what are these for? |
| 994 | // glxPriv->base.waitGL |
| 995 | |
| 996 | GLWIN_DEBUG_MSG("glxWinCreateDrawable %p", glxPriv); |
| 997 | |
| 998 | return &glxPriv->base; |
| 999 | } |
| 1000 | |
| 1001 | /* ---------------------------------------------------------------------- */ |
| 1002 | /* |
| 1003 | * Texture functions |
| 1004 | */ |
| 1005 | |
| 1006 | static |
| 1007 | int |
| 1008 | glxWinBindTexImage(__GLXcontext * baseContext, |
| 1009 | int buffer, __GLXdrawable * pixmap) |
| 1010 | { |
| 1011 | ErrorF("glxWinBindTexImage: not implemented\n"); |
| 1012 | return FALSE; |
| 1013 | } |
| 1014 | |
| 1015 | static |
| 1016 | int |
| 1017 | glxWinReleaseTexImage(__GLXcontext * baseContext, |
| 1018 | int buffer, __GLXdrawable * pixmap) |
| 1019 | { |
| 1020 | ErrorF(" glxWinReleaseTexImage: not implemented\n"); |
| 1021 | return FALSE; |
| 1022 | } |
| 1023 | |
| 1024 | /* ---------------------------------------------------------------------- */ |
| 1025 | /* |
| 1026 | * Lazy update context implementation |
| 1027 | * |
| 1028 | * WGL contexts are created for a specific HDC, so we cannot create the WGL |
| 1029 | * context in glxWinCreateContext(), we must defer creation until the context |
| 1030 | * is actually used on a specifc drawable which is connected to a native window, |
| 1031 | * pbuffer or DIB |
| 1032 | * |
| 1033 | * The WGL context may be used on other, compatible HDCs, so we don't need to |
| 1034 | * recreate it for every new native window |
| 1035 | * |
| 1036 | * XXX: I wonder why we can't create the WGL context on the screen HDC ? |
| 1037 | * Basically we assume all HDCs are compatible at the moment: if they are not |
| 1038 | * we are in a muddle, there was some code in the old implementation to attempt |
| 1039 | * to transparently migrate a context to a new DC by copying state and sharing |
| 1040 | * lists with the old one... |
| 1041 | */ |
| 1042 | |
| 1043 | static Bool |
| 1044 | glxWinSetPixelFormat(__GLXWinContext * gc, HDC hdc, int bppOverride, |
| 1045 | int drawableTypeOverride) |
| 1046 | { |
| 1047 | __GLXscreen *screen = gc->base.pGlxScreen; |
| 1048 | glxWinScreen *winScreen = (glxWinScreen *) screen; |
| 1049 | |
| 1050 | __GLXconfig *config = gc->base.config; |
| 1051 | GLXWinConfig *winConfig = (GLXWinConfig *) config; |
| 1052 | |
| 1053 | GLWIN_DEBUG_MSG("glxWinSetPixelFormat: pixelFormatIndex %d", |
| 1054 | winConfig->pixelFormatIndex); |
| 1055 | |
| 1056 | /* |
| 1057 | Normally, we can just use the the pixelFormatIndex corresponding |
| 1058 | to the fbconfig which has been specified by the client |
| 1059 | */ |
| 1060 | |
| 1061 | if (! |
| 1062 | ((bppOverride && |
| 1063 | (bppOverride != |
| 1064 | (config->redBits + config->greenBits + config->blueBits))) |
| 1065 | || ((config->drawableType & drawableTypeOverride) == 0))) { |
| 1066 | if (!SetPixelFormat(hdc, winConfig->pixelFormatIndex, NULL)) { |
| 1067 | ErrorF("SetPixelFormat error: %s\n", glxWinErrorMessage()); |
| 1068 | return FALSE; |
| 1069 | } |
| 1070 | |
| 1071 | return TRUE; |
| 1072 | } |
| 1073 | |
| 1074 | /* |
| 1075 | However, in certain special cases this pixel format will be incompatible with the |
| 1076 | use we are going to put it to, so we need to re-evaluate the pixel format to use: |
| 1077 | |
| 1078 | 1) When PFD_DRAW_TO_BITMAP is set, ChoosePixelFormat() always returns a format with |
| 1079 | the cColorBits we asked for, so we need to ensure it matches the bpp of the bitmap |
| 1080 | |
| 1081 | 2) Applications may assume that visuals selected with glXChooseVisual() work with |
| 1082 | pixmap drawables (there is no attribute to explicitly query for pixmap drawable |
| 1083 | support as there is for glXChooseFBConfig()) |
| 1084 | (it's arguable this is an error in the application, but we try to make it work) |
| 1085 | |
| 1086 | pixmap rendering is always slow for us, so we don't want to choose those visuals |
| 1087 | by default, but if the actual drawable type we're trying to select the context |
| 1088 | on (drawableTypeOverride) isn't supported by the selected fbConfig, reconsider |
| 1089 | and see if we can find a suitable one... |
| 1090 | */ |
| 1091 | ErrorF |
| 1092 | ("glxWinSetPixelFormat: having second thoughts: cColorbits %d, bppOveride %d; config->drawableType %d, drawableTypeOverride %d\n", |
| 1093 | (config->redBits + config->greenBits + config->blueBits), bppOverride, |
| 1094 | config->drawableType, drawableTypeOverride); |
| 1095 | |
| 1096 | if (!winScreen->has_WGL_ARB_pixel_format) { |
| 1097 | PIXELFORMATDESCRIPTOR pfd; |
| 1098 | int pixelFormat; |
| 1099 | |
| 1100 | /* convert fbConfig to PFD */ |
| 1101 | if (fbConfigToPixelFormat(gc->base.config, &pfd, drawableTypeOverride)) { |
| 1102 | ErrorF("glxWinSetPixelFormat: fbConfigToPixelFormat failed\n"); |
| 1103 | return FALSE; |
| 1104 | } |
| 1105 | |
| 1106 | if (glxWinDebugSettings.dumpPFD) |
| 1107 | pfdOut(&pfd); |
| 1108 | |
| 1109 | if (bppOverride) { |
| 1110 | GLWIN_DEBUG_MSG("glxWinSetPixelFormat: Forcing bpp from %d to %d\n", |
| 1111 | pfd.cColorBits, bppOverride); |
| 1112 | pfd.cColorBits = bppOverride; |
| 1113 | } |
| 1114 | |
| 1115 | pixelFormat = ChoosePixelFormat(hdc, &pfd); |
| 1116 | if (pixelFormat == 0) { |
| 1117 | ErrorF("ChoosePixelFormat error: %s\n", glxWinErrorMessage()); |
| 1118 | return FALSE; |
| 1119 | } |
| 1120 | |
| 1121 | GLWIN_DEBUG_MSG("ChoosePixelFormat: chose pixelFormatIndex %d", |
| 1122 | pixelFormat); |
| 1123 | ErrorF |
| 1124 | ("ChoosePixelFormat: chose pixelFormatIndex %d (rather than %d as originally planned)\n", |
| 1125 | pixelFormat, winConfig->pixelFormatIndex); |
| 1126 | |
| 1127 | if (!SetPixelFormat(hdc, pixelFormat, &pfd)) { |
| 1128 | ErrorF("SetPixelFormat error: %s\n", glxWinErrorMessage()); |
| 1129 | return FALSE; |
| 1130 | } |
| 1131 | } |
| 1132 | else { |
| 1133 | int pixelFormat = |
| 1134 | fbConfigToPixelFormatIndex(hdc, gc->base.config, |
| 1135 | drawableTypeOverride, winScreen); |
| 1136 | if (pixelFormat == 0) { |
| 1137 | ErrorF("wglChoosePixelFormat error: %s\n", glxWinErrorMessage()); |
| 1138 | return FALSE; |
| 1139 | } |
| 1140 | |
| 1141 | GLWIN_DEBUG_MSG("wglChoosePixelFormat: chose pixelFormatIndex %d", |
| 1142 | pixelFormat); |
| 1143 | ErrorF |
| 1144 | ("wglChoosePixelFormat: chose pixelFormatIndex %d (rather than %d as originally planned)\n", |
| 1145 | pixelFormat, winConfig->pixelFormatIndex); |
| 1146 | |
| 1147 | if (!SetPixelFormat(hdc, pixelFormat, NULL)) { |
| 1148 | ErrorF("SetPixelFormat error: %s\n", glxWinErrorMessage()); |
| 1149 | return FALSE; |
| 1150 | } |
| 1151 | } |
| 1152 | |
| 1153 | return TRUE; |
| 1154 | } |
| 1155 | |
| 1156 | static HDC |
| 1157 | glxWinMakeDC(__GLXWinContext * gc, __GLXWinDrawable * draw, HDC * hdc, |
| 1158 | HWND * hwnd) |
| 1159 | { |
| 1160 | *hdc = NULL; |
| 1161 | *hwnd = NULL; |
| 1162 | |
| 1163 | if (draw == NULL) { |
| 1164 | GLWIN_TRACE_MSG("No drawable for context %p (native ctx %p)", gc, |
| 1165 | gc->ctx); |
| 1166 | return NULL; |
| 1167 | } |
| 1168 | |
| 1169 | switch (draw->base.type) { |
| 1170 | case GLX_DRAWABLE_WINDOW: |
| 1171 | { |
| 1172 | WindowPtr pWin; |
| 1173 | |
| 1174 | pWin = (WindowPtr) draw->base.pDraw; |
| 1175 | if (pWin == NULL) { |
| 1176 | GLWIN_TRACE_MSG("for drawable %p, no WindowPtr", pWin); |
| 1177 | return NULL; |
| 1178 | } |
| 1179 | |
| 1180 | *hwnd = winGetWindowInfo(pWin); |
| 1181 | |
| 1182 | if (*hwnd == NULL) { |
| 1183 | ErrorF("No HWND error: %s\n", glxWinErrorMessage()); |
| 1184 | return NULL; |
| 1185 | } |
| 1186 | |
| 1187 | *hdc = GetDC(*hwnd); |
| 1188 | |
| 1189 | if (*hdc == NULL) |
| 1190 | ErrorF("GetDC error: %s\n", glxWinErrorMessage()); |
| 1191 | |
| 1192 | /* Check if the hwnd has changed... */ |
| 1193 | if (*hwnd != gc->hwnd) { |
| 1194 | if (glxWinDebugSettings.enableTrace) |
| 1195 | GLWIN_DEBUG_HWND(*hwnd); |
| 1196 | |
| 1197 | GLWIN_TRACE_MSG |
| 1198 | ("for context %p (native ctx %p), hWnd changed from %p to %p", |
| 1199 | gc, gc->ctx, gc->hwnd, *hwnd); |
| 1200 | gc->hwnd = *hwnd; |
| 1201 | |
| 1202 | /* We must select a pixelformat, but SetPixelFormat can only be called once for a window... */ |
| 1203 | if (!glxWinSetPixelFormat(gc, *hdc, 0, GLX_WINDOW_BIT)) { |
| 1204 | ErrorF("glxWinSetPixelFormat error: %s\n", |
| 1205 | glxWinErrorMessage()); |
| 1206 | ReleaseDC(*hwnd, *hdc); |
| 1207 | *hdc = NULL; |
| 1208 | return NULL; |
| 1209 | } |
| 1210 | } |
| 1211 | } |
| 1212 | break; |
| 1213 | |
| 1214 | case GLX_DRAWABLE_PBUFFER: |
| 1215 | { |
| 1216 | *hdc = wglGetPbufferDCARBWrapper(draw->hPbuffer); |
| 1217 | |
| 1218 | if (*hdc == NULL) |
| 1219 | ErrorF("GetDC (pbuffer) error: %s\n", glxWinErrorMessage()); |
| 1220 | } |
| 1221 | break; |
| 1222 | |
| 1223 | case GLX_DRAWABLE_PIXMAP: |
| 1224 | { |
| 1225 | *hdc = draw->dibDC; |
| 1226 | } |
| 1227 | break; |
| 1228 | |
| 1229 | default: |
| 1230 | { |
| 1231 | ErrorF("glxWinMakeDC: tried to makeDC for unhandled drawable type %d\n", |
| 1232 | draw->base.type); |
| 1233 | } |
| 1234 | } |
| 1235 | |
| 1236 | if (glxWinDebugSettings.dumpDC) |
| 1237 | GLWIN_DEBUG_MSG("Got HDC %p", *hdc); |
| 1238 | |
| 1239 | return *hdc; |
| 1240 | } |
| 1241 | |
| 1242 | static void |
| 1243 | glxWinReleaseDC(HWND hwnd, HDC hdc, __GLXWinDrawable * draw) |
| 1244 | { |
| 1245 | switch (draw->base.type) { |
| 1246 | case GLX_DRAWABLE_WINDOW: |
| 1247 | { |
| 1248 | ReleaseDC(hwnd, hdc); |
| 1249 | } |
| 1250 | break; |
| 1251 | |
| 1252 | case GLX_DRAWABLE_PBUFFER: |
| 1253 | { |
| 1254 | if (!wglReleasePbufferDCARBWrapper(draw->hPbuffer, hdc)) { |
| 1255 | ErrorF("wglReleasePbufferDCARB error: %s\n", glxWinErrorMessage()); |
| 1256 | } |
| 1257 | } |
| 1258 | break; |
| 1259 | |
| 1260 | case GLX_DRAWABLE_PIXMAP: |
| 1261 | { |
| 1262 | // don't release DC, the memory DC lives as long as the bitmap |
| 1263 | |
| 1264 | // We must ensure that all GDI drawing into the bitmap has completed |
| 1265 | // in case we subsequently access the bits from it |
| 1266 | GdiFlush(); |
| 1267 | } |
| 1268 | break; |
| 1269 | |
| 1270 | default: |
| 1271 | { |
| 1272 | ErrorF |
| 1273 | ("glxWinReleaseDC: tried to releaseDC for unhandled drawable type %d\n", |
| 1274 | draw->base.type); |
| 1275 | } |
| 1276 | } |
| 1277 | } |
| 1278 | |
| 1279 | static void |
| 1280 | glxWinDeferredCreateContext(__GLXWinContext * gc, __GLXWinDrawable * draw) |
| 1281 | { |
| 1282 | HDC dc; |
| 1283 | HWND hwnd; |
| 1284 | |
| 1285 | GLWIN_DEBUG_MSG |
| 1286 | ("glxWinDeferredCreateContext: attach context %p to drawable %p", gc, |
| 1287 | draw); |
| 1288 | |
| 1289 | switch (draw->base.type) { |
| 1290 | case GLX_DRAWABLE_WINDOW: |
| 1291 | { |
| 1292 | WindowPtr pWin = (WindowPtr) draw->base.pDraw; |
| 1293 | |
| 1294 | if (!(gc->base.config->drawableType & GLX_WINDOW_BIT)) { |
| 1295 | ErrorF |
| 1296 | ("glxWinDeferredCreateContext: tried to attach a context whose fbConfig doesn't have drawableType GLX_WINDOW_BIT to a GLX_DRAWABLE_WINDOW drawable\n"); |
| 1297 | } |
| 1298 | |
| 1299 | if (pWin == NULL) { |
| 1300 | GLWIN_DEBUG_MSG("Deferring until X window is created"); |
| 1301 | return; |
| 1302 | } |
| 1303 | |
| 1304 | GLWIN_DEBUG_MSG("glxWinDeferredCreateContext: pWin %p", pWin); |
| 1305 | |
| 1306 | if (winGetWindowInfo(pWin) == NULL) { |
| 1307 | GLWIN_DEBUG_MSG("Deferring until native window is created"); |
| 1308 | return; |
| 1309 | } |
| 1310 | } |
| 1311 | break; |
| 1312 | |
| 1313 | case GLX_DRAWABLE_PBUFFER: |
| 1314 | { |
| 1315 | if (draw->hPbuffer == NULL) { |
| 1316 | __GLXscreen *screen; |
| 1317 | glxWinScreen *winScreen; |
| 1318 | int pixelFormat; |
| 1319 | |
| 1320 | // XXX: which DC are supposed to use??? |
| 1321 | HDC screenDC = GetDC(NULL); |
| 1322 | |
| 1323 | if (!(gc->base.config->drawableType & GLX_PBUFFER_BIT)) { |
| 1324 | ErrorF |
| 1325 | ("glxWinDeferredCreateContext: tried to attach a context whose fbConfig doesn't have drawableType GLX_PBUFFER_BIT to a GLX_DRAWABLE_PBUFFER drawable\n"); |
| 1326 | } |
| 1327 | |
| 1328 | screen = gc->base.pGlxScreen; |
| 1329 | winScreen = (glxWinScreen *) screen; |
| 1330 | |
| 1331 | pixelFormat = |
| 1332 | fbConfigToPixelFormatIndex(screenDC, gc->base.config, |
| 1333 | GLX_DRAWABLE_PBUFFER, winScreen); |
| 1334 | if (pixelFormat == 0) { |
| 1335 | ErrorF("wglChoosePixelFormat error: %s\n", |
| 1336 | glxWinErrorMessage()); |
| 1337 | return; |
| 1338 | } |
| 1339 | |
| 1340 | draw->hPbuffer = |
| 1341 | wglCreatePbufferARBWrapper(screenDC, pixelFormat, |
| 1342 | draw->base.pDraw->width, |
| 1343 | draw->base.pDraw->height, NULL); |
| 1344 | ReleaseDC(NULL, screenDC); |
| 1345 | |
| 1346 | if (draw->hPbuffer == NULL) { |
| 1347 | ErrorF("wglCreatePbufferARBWrapper error: %s\n", |
| 1348 | glxWinErrorMessage()); |
| 1349 | return; |
| 1350 | } |
| 1351 | |
| 1352 | GLWIN_DEBUG_MSG |
| 1353 | ("glxWinDeferredCreateContext: pBuffer %p created for drawable %p", |
| 1354 | draw->hPbuffer, draw); |
| 1355 | } |
| 1356 | } |
| 1357 | break; |
| 1358 | |
| 1359 | case GLX_DRAWABLE_PIXMAP: |
| 1360 | { |
| 1361 | if (draw->dibDC == NULL) { |
| 1362 | BITMAPINFOHEADER bmpHeader; |
| 1363 | void *pBits; |
| 1364 | |
| 1365 | memset(&bmpHeader, 0, sizeof(BITMAPINFOHEADER)); |
| 1366 | bmpHeader.biSize = sizeof(BITMAPINFOHEADER); |
| 1367 | bmpHeader.biWidth = draw->base.pDraw->width; |
| 1368 | bmpHeader.biHeight = draw->base.pDraw->height; |
| 1369 | bmpHeader.biPlanes = 1; |
| 1370 | bmpHeader.biBitCount = draw->base.pDraw->bitsPerPixel; |
| 1371 | bmpHeader.biCompression = BI_RGB; |
| 1372 | |
| 1373 | if (!(gc->base.config->drawableType & GLX_PIXMAP_BIT)) { |
| 1374 | ErrorF |
| 1375 | ("glxWinDeferredCreateContext: tried to attach a context whose fbConfig doesn't have drawableType GLX_PIXMAP_BIT to a GLX_DRAWABLE_PIXMAP drawable\n"); |
| 1376 | } |
| 1377 | |
| 1378 | draw->dibDC = CreateCompatibleDC(NULL); |
| 1379 | if (draw->dibDC == NULL) { |
| 1380 | ErrorF("CreateCompatibleDC error: %s\n", glxWinErrorMessage()); |
| 1381 | return; |
| 1382 | } |
| 1383 | |
| 1384 | draw->hDIB = |
| 1385 | CreateDIBSection(draw->dibDC, (BITMAPINFO *) &bmpHeader, |
| 1386 | DIB_RGB_COLORS, &pBits, 0, 0); |
| 1387 | if (draw->dibDC == NULL) { |
| 1388 | ErrorF("CreateDIBSection error: %s\n", glxWinErrorMessage()); |
| 1389 | return; |
| 1390 | } |
| 1391 | |
| 1392 | // XXX: CreateDIBSection insists on allocating the bitmap memory for us, so we're going to |
| 1393 | // need some jiggery pokery to point the underlying X Drawable's bitmap at the same set of bits |
| 1394 | // so that they can be read with XGetImage as well as glReadPixels, assuming the formats are |
| 1395 | // even compatible ... |
| 1396 | draw->pOldBits = ((PixmapPtr) draw->base.pDraw)->devPrivate.ptr; |
| 1397 | ((PixmapPtr) draw->base.pDraw)->devPrivate.ptr = pBits; |
| 1398 | |
| 1399 | // Select the DIB into the DC |
| 1400 | draw->hOldDIB = SelectObject(draw->dibDC, draw->hDIB); |
| 1401 | if (!draw->hOldDIB) { |
| 1402 | ErrorF("SelectObject error: %s\n", glxWinErrorMessage()); |
| 1403 | } |
| 1404 | |
| 1405 | // Set the pixel format of the bitmap |
| 1406 | glxWinSetPixelFormat(gc, draw->dibDC, |
| 1407 | draw->base.pDraw->bitsPerPixel, |
| 1408 | GLX_PIXMAP_BIT); |
| 1409 | |
| 1410 | GLWIN_DEBUG_MSG |
| 1411 | ("glxWinDeferredCreateContext: DIB bitmap %p created for drawable %p", |
| 1412 | draw->hDIB, draw); |
| 1413 | } |
| 1414 | } |
| 1415 | break; |
| 1416 | |
| 1417 | default: |
| 1418 | { |
| 1419 | ErrorF |
| 1420 | ("glxWinDeferredCreateContext: tried to attach unhandled drawable type %d\n", |
| 1421 | draw->base.type); |
| 1422 | return; |
| 1423 | } |
| 1424 | } |
| 1425 | |
| 1426 | dc = glxWinMakeDC(gc, draw, &dc, &hwnd); |
| 1427 | gc->ctx = wglCreateContext(dc); |
| 1428 | glxWinReleaseDC(hwnd, dc, draw); |
| 1429 | |
| 1430 | if (gc->ctx == NULL) { |
| 1431 | ErrorF("wglCreateContext error: %s\n", glxWinErrorMessage()); |
| 1432 | return; |
| 1433 | } |
| 1434 | |
| 1435 | GLWIN_DEBUG_MSG |
| 1436 | ("glxWinDeferredCreateContext: attached context %p to native context %p drawable %p", |
| 1437 | gc, gc->ctx, draw); |
| 1438 | |
| 1439 | // if the native context was created successfully, shareLists if needed |
| 1440 | if (gc->ctx && gc->shareContext) { |
| 1441 | GLWIN_DEBUG_MSG |
| 1442 | ("glxWinCreateContextReal shareLists with context %p (native ctx %p)", |
| 1443 | gc->shareContext, gc->shareContext->ctx); |
| 1444 | |
| 1445 | if (!wglShareLists(gc->shareContext->ctx, gc->ctx)) { |
| 1446 | ErrorF("wglShareLists error: %s\n", glxWinErrorMessage()); |
| 1447 | } |
| 1448 | } |
| 1449 | } |
| 1450 | |
| 1451 | /* ---------------------------------------------------------------------- */ |
| 1452 | /* |
| 1453 | * Context functions |
| 1454 | */ |
| 1455 | |
| 1456 | /* Context manipulation routines should return TRUE on success, FALSE on failure */ |
| 1457 | static int |
| 1458 | glxWinContextMakeCurrent(__GLXcontext * base) |
| 1459 | { |
| 1460 | __GLXWinContext *gc = (__GLXWinContext *) base; |
| 1461 | BOOL ret; |
| 1462 | HDC drawDC; |
| 1463 | HDC readDC = NULL; |
| 1464 | __GLXdrawable *drawPriv; |
| 1465 | __GLXdrawable *readPriv = NULL; |
| 1466 | HWND hDrawWnd; |
| 1467 | HWND hReadWnd; |
| 1468 | |
| 1469 | GLWIN_TRACE_MSG("glxWinContextMakeCurrent context %p (native ctx %p)", gc, |
| 1470 | gc->ctx); |
| 1471 | |
| 1472 | /* Keep a note of the last active context in the drawable */ |
| 1473 | drawPriv = gc->base.drawPriv; |
| 1474 | ((__GLXWinDrawable *) drawPriv)->drawContext = gc; |
| 1475 | |
| 1476 | if (gc->ctx == NULL) { |
| 1477 | glxWinDeferredCreateContext(gc, (__GLXWinDrawable *) drawPriv); |
| 1478 | } |
| 1479 | |
| 1480 | if (gc->ctx == NULL) { |
| 1481 | ErrorF("glxWinContextMakeCurrent: Native context is NULL\n"); |
| 1482 | return FALSE; |
| 1483 | } |
| 1484 | |
| 1485 | drawDC = |
| 1486 | glxWinMakeDC(gc, (__GLXWinDrawable *) drawPriv, &drawDC, &hDrawWnd); |
| 1487 | if (drawDC == NULL) { |
| 1488 | ErrorF("glxWinMakeDC failed for drawDC\n"); |
| 1489 | return FALSE; |
| 1490 | } |
| 1491 | |
| 1492 | if ((gc->base.readPriv != NULL) && (gc->base.readPriv != gc->base.drawPriv)) { |
| 1493 | // XXX: should only occur with WGL_ARB_make_current_read |
| 1494 | /* |
| 1495 | If there is a separate read drawable, create a separate read DC, and |
| 1496 | use the wglMakeContextCurrent extension to make the context current drawing |
| 1497 | to one DC and reading from the other |
| 1498 | */ |
| 1499 | readPriv = gc->base.readPriv; |
| 1500 | readDC = |
| 1501 | glxWinMakeDC(gc, (__GLXWinDrawable *) readPriv, &readDC, &hReadWnd); |
| 1502 | if (readDC == NULL) { |
| 1503 | ErrorF("glxWinMakeDC failed for readDC\n"); |
| 1504 | glxWinReleaseDC(hDrawWnd, drawDC, (__GLXWinDrawable *) drawPriv); |
| 1505 | return FALSE; |
| 1506 | } |
| 1507 | |
| 1508 | ret = wglMakeContextCurrentARBWrapper(drawDC, readDC, gc->ctx); |
| 1509 | if (!ret) { |
| 1510 | ErrorF("wglMakeContextCurrentARBWrapper error: %s\n", |
| 1511 | glxWinErrorMessage()); |
| 1512 | } |
| 1513 | } |
| 1514 | else { |
| 1515 | /* Otherwise, just use wglMakeCurrent */ |
| 1516 | ret = wglMakeCurrent(drawDC, gc->ctx); |
| 1517 | if (!ret) { |
| 1518 | ErrorF("wglMakeCurrent error: %s\n", glxWinErrorMessage()); |
| 1519 | } |
| 1520 | } |
| 1521 | |
| 1522 | // apparently make current could fail if the context is current in a different thread, |
| 1523 | // but that shouldn't be able to happen in the current server... |
| 1524 | |
| 1525 | glxWinReleaseDC(hDrawWnd, drawDC, (__GLXWinDrawable *) drawPriv); |
| 1526 | if (readDC) |
| 1527 | glxWinReleaseDC(hReadWnd, readDC, (__GLXWinDrawable *) readPriv); |
| 1528 | |
| 1529 | return ret; |
| 1530 | } |
| 1531 | |
| 1532 | static int |
| 1533 | glxWinContextLoseCurrent(__GLXcontext * base) |
| 1534 | { |
| 1535 | BOOL ret; |
| 1536 | __GLXWinContext *gc = (__GLXWinContext *) base; |
| 1537 | |
| 1538 | GLWIN_TRACE_MSG("glxWinContextLoseCurrent context %p (native ctx %p)", gc, |
| 1539 | gc->ctx); |
| 1540 | |
| 1541 | /* |
| 1542 | An error seems to be reported if we try to make no context current |
| 1543 | if there is already no current context, so avoid doing that... |
| 1544 | */ |
| 1545 | if (__glXLastContext != NULL) { |
| 1546 | ret = wglMakeCurrent(NULL, NULL); /* We don't need a DC when setting no current context */ |
| 1547 | if (!ret) |
| 1548 | ErrorF("glxWinContextLoseCurrent error: %s\n", |
| 1549 | glxWinErrorMessage()); |
| 1550 | } |
| 1551 | |
| 1552 | return TRUE; |
| 1553 | } |
| 1554 | |
| 1555 | static int |
| 1556 | glxWinContextCopy(__GLXcontext * dst_base, __GLXcontext * src_base, |
| 1557 | unsigned long mask) |
| 1558 | { |
| 1559 | __GLXWinContext *dst = (__GLXWinContext *) dst_base; |
| 1560 | __GLXWinContext *src = (__GLXWinContext *) src_base; |
| 1561 | BOOL ret; |
| 1562 | |
| 1563 | GLWIN_DEBUG_MSG("glxWinContextCopy"); |
| 1564 | |
| 1565 | ret = wglCopyContext(src->ctx, dst->ctx, mask); |
| 1566 | if (!ret) { |
| 1567 | ErrorF("wglCopyContext error: %s\n", glxWinErrorMessage()); |
| 1568 | } |
| 1569 | |
| 1570 | return ret; |
| 1571 | } |
| 1572 | |
| 1573 | static void |
| 1574 | glxWinContextDestroy(__GLXcontext * base) |
| 1575 | { |
| 1576 | __GLXWinContext *gc = (__GLXWinContext *) base; |
| 1577 | |
| 1578 | if (gc != NULL) { |
| 1579 | GLWIN_DEBUG_MSG("GLXcontext %p destroyed (native ctx %p)", base, |
| 1580 | gc->ctx); |
| 1581 | |
| 1582 | if (gc->ctx) { |
| 1583 | /* It's bad style to delete the context while it's still current */ |
| 1584 | if (wglGetCurrentContext() == gc->ctx) { |
| 1585 | wglMakeCurrent(NULL, NULL); |
| 1586 | } |
| 1587 | |
| 1588 | { |
| 1589 | BOOL ret = wglDeleteContext(gc->ctx); |
| 1590 | |
| 1591 | if (!ret) |
| 1592 | ErrorF("wglDeleteContext error: %s\n", |
| 1593 | glxWinErrorMessage()); |
| 1594 | } |
| 1595 | |
| 1596 | gc->ctx = NULL; |
| 1597 | } |
| 1598 | |
| 1599 | free(gc); |
| 1600 | } |
| 1601 | } |
| 1602 | |
| 1603 | static __GLXcontext * |
| 1604 | glxWinCreateContext(__GLXscreen * screen, |
| 1605 | __GLXconfig * modes, __GLXcontext * baseShareContext, |
| 1606 | unsigned num_attribs, const uint32_t * attribs, int *error) |
| 1607 | { |
| 1608 | __GLXWinContext *context; |
| 1609 | __GLXWinContext *shareContext = (__GLXWinContext *) baseShareContext; |
| 1610 | |
| 1611 | static __GLXtextureFromPixmap glxWinTextureFromPixmap = { |
| 1612 | glxWinBindTexImage, |
| 1613 | glxWinReleaseTexImage |
| 1614 | }; |
| 1615 | |
| 1616 | context = (__GLXWinContext *) calloc(1, sizeof(__GLXWinContext)); |
| 1617 | |
| 1618 | if (!context) |
| 1619 | return NULL; |
| 1620 | |
| 1621 | memset(context, 0, sizeof *context); |
| 1622 | context->base.destroy = glxWinContextDestroy; |
| 1623 | context->base.makeCurrent = glxWinContextMakeCurrent; |
| 1624 | context->base.loseCurrent = glxWinContextLoseCurrent; |
| 1625 | context->base.copy = glxWinContextCopy; |
| 1626 | context->base.textureFromPixmap = &glxWinTextureFromPixmap; |
| 1627 | context->base.config = modes; |
| 1628 | context->base.pGlxScreen = screen; |
| 1629 | |
| 1630 | // actual native GL context creation is deferred until attach() |
| 1631 | context->ctx = NULL; |
| 1632 | context->shareContext = shareContext; |
| 1633 | |
| 1634 | GLWIN_DEBUG_MSG("GLXcontext %p created", context); |
| 1635 | |
| 1636 | return &(context->base); |
| 1637 | } |
| 1638 | |
| 1639 | /* ---------------------------------------------------------------------- */ |
| 1640 | /* |
| 1641 | * Utility functions |
| 1642 | */ |
| 1643 | |
| 1644 | static int |
| 1645 | GetShift(int mask) |
| 1646 | { |
| 1647 | int shift = 0; |
| 1648 | |
| 1649 | while ((mask &1) == 0) { |
| 1650 | shift++; |
| 1651 | mask >>=1; |
| 1652 | } |
| 1653 | return shift; |
| 1654 | } |
| 1655 | |
| 1656 | static int |
| 1657 | fbConfigToPixelFormat(__GLXconfig * mode, PIXELFORMATDESCRIPTOR * pfdret, |
| 1658 | int drawableTypeOverride) |
| 1659 | { |
| 1660 | PIXELFORMATDESCRIPTOR pfd = { |
| 1661 | sizeof(PIXELFORMATDESCRIPTOR), /* size of this pfd */ |
| 1662 | 1, /* version number */ |
| 1663 | PFD_SUPPORT_OPENGL, /* support OpenGL */ |
| 1664 | PFD_TYPE_RGBA, /* RGBA type */ |
| 1665 | 24, /* 24-bit color depth */ |
| 1666 | 0, 0, 0, 0, 0, 0, /* color bits ignored */ |
| 1667 | 0, /* no alpha buffer */ |
| 1668 | 0, /* shift bit ignored */ |
| 1669 | 0, /* no accumulation buffer */ |
| 1670 | 0, 0, 0, 0, /* accum bits ignored */ |
| 1671 | 32, /* 32-bit z-buffer */ |
| 1672 | 0, /* no stencil buffer */ |
| 1673 | 0, /* no auxiliary buffer */ |
| 1674 | PFD_MAIN_PLANE, /* main layer */ |
| 1675 | 0, /* reserved */ |
| 1676 | 0, 0, 0 /* layer masks ignored */ |
| 1677 | }; |
| 1678 | |
| 1679 | if ((mode->drawableType | drawableTypeOverride) & GLX_WINDOW_BIT) |
| 1680 | pfd.dwFlags |= PFD_DRAW_TO_WINDOW; /* support window */ |
| 1681 | |
| 1682 | if ((mode->drawableType | drawableTypeOverride) & GLX_PIXMAP_BIT) |
| 1683 | pfd.dwFlags |= (PFD_DRAW_TO_BITMAP | PFD_SUPPORT_GDI); /* supports software rendering to bitmap */ |
| 1684 | |
| 1685 | if (mode->stereoMode) { |
| 1686 | pfd.dwFlags |= PFD_STEREO; |
| 1687 | } |
| 1688 | if (mode->doubleBufferMode) { |
| 1689 | pfd.dwFlags |= PFD_DOUBLEBUFFER; |
| 1690 | } |
| 1691 | |
| 1692 | pfd.cColorBits = mode->redBits + mode->greenBits + mode->blueBits; |
| 1693 | pfd.cRedBits = mode->redBits; |
| 1694 | pfd.cRedShift = GetShift(mode->redMask); |
| 1695 | pfd.cGreenBits = mode->greenBits; |
| 1696 | pfd.cGreenShift = GetShift(mode->greenMask); |
| 1697 | pfd.cBlueBits = mode->blueBits; |
| 1698 | pfd.cBlueShift = GetShift(mode->blueMask); |
| 1699 | pfd.cAlphaBits = mode->alphaBits; |
| 1700 | pfd.cAlphaShift = GetShift(mode->alphaMask); |
| 1701 | |
| 1702 | if (mode->visualType == GLX_TRUE_COLOR) { |
| 1703 | pfd.iPixelType = PFD_TYPE_RGBA; |
| 1704 | pfd.dwVisibleMask = |
| 1705 | (pfd.cRedBits << pfd.cRedShift) | (pfd.cGreenBits << pfd.cGreenShift) | |
| 1706 | (pfd.cBlueBits << pfd.cBlueShift) | (pfd.cAlphaBits << pfd.cAlphaShift); |
| 1707 | } |
| 1708 | else { |
| 1709 | pfd.iPixelType = PFD_TYPE_COLORINDEX; |
| 1710 | pfd.dwVisibleMask = mode->transparentIndex; |
| 1711 | } |
| 1712 | |
| 1713 | pfd.cAccumBits = |
| 1714 | mode->accumRedBits + mode->accumGreenBits + mode->accumBlueBits + |
| 1715 | mode->accumAlphaBits; |
| 1716 | pfd.cAccumRedBits = mode->accumRedBits; |
| 1717 | pfd.cAccumGreenBits = mode->accumGreenBits; |
| 1718 | pfd.cAccumBlueBits = mode->accumBlueBits; |
| 1719 | pfd.cAccumAlphaBits = mode->accumAlphaBits; |
| 1720 | |
| 1721 | pfd.cDepthBits = mode->depthBits; |
| 1722 | pfd.cStencilBits = mode->stencilBits; |
| 1723 | pfd.cAuxBuffers = mode->numAuxBuffers; |
| 1724 | |
| 1725 | /* mode->level ? */ |
| 1726 | |
| 1727 | *pfdret = pfd; |
| 1728 | |
| 1729 | return 0; |
| 1730 | } |
| 1731 | |
| 1732 | #define SET_ATTR_VALUE(attr, value) { attribList[i++] = attr; attribList[i++] = value; assert(i < NUM_ELEMENTS(attribList)); } |
| 1733 | |
| 1734 | static int |
| 1735 | fbConfigToPixelFormatIndex(HDC hdc, __GLXconfig * mode, |
| 1736 | int drawableTypeOverride, glxWinScreen * winScreen) |
| 1737 | { |
| 1738 | UINT numFormats; |
| 1739 | unsigned int i = 0; |
| 1740 | |
| 1741 | /* convert fbConfig to attr-value list */ |
| 1742 | int attribList[60]; |
| 1743 | |
| 1744 | SET_ATTR_VALUE(WGL_SUPPORT_OPENGL_ARB, TRUE); |
| 1745 | SET_ATTR_VALUE(WGL_PIXEL_TYPE_ARB, |
| 1746 | (mode->visualType == |
| 1747 | GLX_TRUE_COLOR) ? WGL_TYPE_RGBA_ARB : |
| 1748 | WGL_TYPE_COLORINDEX_ARB); |
| 1749 | SET_ATTR_VALUE(WGL_COLOR_BITS_ARB, |
| 1750 | (mode->visualType == |
| 1751 | GLX_TRUE_COLOR) ? mode->rgbBits : mode->indexBits); |
| 1752 | SET_ATTR_VALUE(WGL_RED_BITS_ARB, mode->redBits); |
| 1753 | SET_ATTR_VALUE(WGL_GREEN_BITS_ARB, mode->greenBits); |
| 1754 | SET_ATTR_VALUE(WGL_BLUE_BITS_ARB, mode->blueBits); |
| 1755 | SET_ATTR_VALUE(WGL_ALPHA_BITS_ARB, mode->alphaBits); |
| 1756 | SET_ATTR_VALUE(WGL_ACCUM_RED_BITS_ARB, mode->accumRedBits); |
| 1757 | SET_ATTR_VALUE(WGL_ACCUM_GREEN_BITS_ARB, mode->accumGreenBits); |
| 1758 | SET_ATTR_VALUE(WGL_ACCUM_BLUE_BITS_ARB, mode->accumBlueBits); |
| 1759 | SET_ATTR_VALUE(WGL_ACCUM_ALPHA_BITS_ARB, mode->accumAlphaBits); |
| 1760 | SET_ATTR_VALUE(WGL_DEPTH_BITS_ARB, mode->depthBits); |
| 1761 | SET_ATTR_VALUE(WGL_STENCIL_BITS_ARB, mode->stencilBits); |
| 1762 | SET_ATTR_VALUE(WGL_AUX_BUFFERS_ARB, mode->numAuxBuffers); |
| 1763 | |
| 1764 | if (mode->doubleBufferMode) |
| 1765 | SET_ATTR_VALUE(WGL_DOUBLE_BUFFER_ARB, TRUE); |
| 1766 | |
| 1767 | if (mode->stereoMode) |
| 1768 | SET_ATTR_VALUE(WGL_STEREO_ARB, TRUE); |
| 1769 | |
| 1770 | // Some attributes are only added to the list if the value requested is not 'don't care', as exactly matching that is daft.. |
| 1771 | if (mode->swapMethod == GLX_SWAP_EXCHANGE_OML) |
| 1772 | SET_ATTR_VALUE(WGL_SWAP_METHOD_ARB, WGL_SWAP_EXCHANGE_ARB); |
| 1773 | |
| 1774 | if (mode->swapMethod == GLX_SWAP_COPY_OML) |
| 1775 | SET_ATTR_VALUE(WGL_SWAP_COPY_ARB, TRUE); |
| 1776 | |
| 1777 | // XXX: this should probably be the other way around, but that messes up drawableTypeOverride |
| 1778 | if (mode->visualRating == GLX_SLOW_VISUAL_EXT) |
| 1779 | SET_ATTR_VALUE(WGL_ACCELERATION_ARB, WGL_NO_ACCELERATION_ARB); |
| 1780 | |
| 1781 | // must support all the drawable types the mode supports |
| 1782 | if ((mode->drawableType | drawableTypeOverride) & GLX_WINDOW_BIT) |
| 1783 | SET_ATTR_VALUE(WGL_DRAW_TO_WINDOW_ARB, TRUE); |
| 1784 | |
| 1785 | // XXX: this is a horrible hacky heuristic, in fact this whole drawableTypeOverride thing is a bad idea |
| 1786 | // try to avoid asking for formats which don't exist (by not asking for all when adjusting the config to include the drawableTypeOverride) |
| 1787 | if (drawableTypeOverride == GLX_WINDOW_BIT) { |
| 1788 | if (mode->drawableType & GLX_PIXMAP_BIT) |
| 1789 | SET_ATTR_VALUE(WGL_DRAW_TO_BITMAP_ARB, TRUE); |
| 1790 | |
| 1791 | if (mode->drawableType & GLX_PBUFFER_BIT) |
| 1792 | if (winScreen->has_WGL_ARB_pbuffer) |
| 1793 | SET_ATTR_VALUE(WGL_DRAW_TO_PBUFFER_ARB, TRUE); |
| 1794 | } |
| 1795 | else { |
| 1796 | if (drawableTypeOverride & GLX_PIXMAP_BIT) |
| 1797 | SET_ATTR_VALUE(WGL_DRAW_TO_BITMAP_ARB, TRUE); |
| 1798 | |
| 1799 | if (drawableTypeOverride & GLX_PBUFFER_BIT) |
| 1800 | if (winScreen->has_WGL_ARB_pbuffer) |
| 1801 | SET_ATTR_VALUE(WGL_DRAW_TO_PBUFFER_ARB, TRUE); |
| 1802 | } |
| 1803 | |
| 1804 | SET_ATTR_VALUE(0, 0); // terminator |
| 1805 | |
| 1806 | /* choose the first match */ |
| 1807 | { |
| 1808 | int pixelFormatIndex; |
| 1809 | |
| 1810 | if (!wglChoosePixelFormatARBWrapper |
| 1811 | (hdc, attribList, NULL, 1, &pixelFormatIndex, &numFormats)) { |
| 1812 | ErrorF("wglChoosePixelFormat error: %s\n", glxWinErrorMessage()); |
| 1813 | } |
| 1814 | else { |
| 1815 | if (numFormats > 0) { |
| 1816 | GLWIN_DEBUG_MSG |
| 1817 | ("wglChoosePixelFormat: chose pixelFormatIndex %d)", |
| 1818 | pixelFormatIndex); |
| 1819 | return pixelFormatIndex; |
| 1820 | } |
| 1821 | else |
| 1822 | ErrorF("wglChoosePixelFormat couldn't decide\n"); |
| 1823 | } |
| 1824 | } |
| 1825 | |
| 1826 | return 0; |
| 1827 | } |
| 1828 | |
| 1829 | /* ---------------------------------------------------------------------- */ |
| 1830 | |
| 1831 | #define BITS_AND_SHIFT_TO_MASK(bits,mask) (((1<<(bits))-1) << (mask)) |
| 1832 | |
| 1833 | // |
| 1834 | // Create the GLXconfigs using DescribePixelFormat() |
| 1835 | // |
| 1836 | static void |
| 1837 | glxWinCreateConfigs(HDC hdc, glxWinScreen * screen) |
| 1838 | { |
| 1839 | GLXWinConfig *c, *result, *prev = NULL; |
| 1840 | int numConfigs = 0; |
| 1841 | int i = 0; |
| 1842 | int n = 0; |
| 1843 | PIXELFORMATDESCRIPTOR pfd; |
| 1844 | |
| 1845 | GLWIN_DEBUG_MSG("glxWinCreateConfigs"); |
| 1846 | |
| 1847 | screen->base.numFBConfigs = 0; |
| 1848 | screen->base.fbconfigs = NULL; |
| 1849 | |
| 1850 | // get the number of pixelformats |
| 1851 | numConfigs = |
| 1852 | DescribePixelFormat(hdc, 1, sizeof(PIXELFORMATDESCRIPTOR), NULL); |
| 1853 | LogMessage(X_INFO, "%d pixel formats reported by DescribePixelFormat\n", |
| 1854 | numConfigs); |
| 1855 | |
| 1856 | /* alloc */ |
| 1857 | result = malloc(sizeof(GLXWinConfig) * numConfigs); |
| 1858 | |
| 1859 | if (NULL == result) { |
| 1860 | return; |
| 1861 | } |
| 1862 | |
| 1863 | memset(result, 0, sizeof(GLXWinConfig) * numConfigs); |
| 1864 | n = 0; |
| 1865 | |
| 1866 | /* fill in configs */ |
| 1867 | for (i = 0; i < numConfigs; i++) { |
| 1868 | int rc; |
| 1869 | |
| 1870 | c = &(result[i]); |
| 1871 | c->base.next = NULL; |
| 1872 | c->pixelFormatIndex = i + 1; |
| 1873 | |
| 1874 | rc = DescribePixelFormat(hdc, i + 1, sizeof(PIXELFORMATDESCRIPTOR), |
| 1875 | &pfd); |
| 1876 | |
| 1877 | if (!rc) { |
| 1878 | ErrorF("DescribePixelFormat failed for index %d, error %s\n", i + 1, |
| 1879 | glxWinErrorMessage()); |
| 1880 | break; |
| 1881 | } |
| 1882 | |
| 1883 | if (glxWinDebugSettings.dumpPFD) |
| 1884 | pfdOut(&pfd); |
| 1885 | |
| 1886 | if (!(pfd.dwFlags & (PFD_DRAW_TO_WINDOW | PFD_DRAW_TO_BITMAP)) || |
| 1887 | !(pfd.dwFlags & PFD_SUPPORT_OPENGL)) { |
| 1888 | GLWIN_DEBUG_MSG |
| 1889 | ("pixelFormat %d has unsuitable flags 0x%08lx, skipping", i + 1, |
| 1890 | pfd.dwFlags); |
| 1891 | continue; |
| 1892 | } |
| 1893 | |
| 1894 | c->base.doubleBufferMode = |
| 1895 | (pfd.dwFlags & PFD_DOUBLEBUFFER) ? GL_TRUE : GL_FALSE; |
| 1896 | c->base.stereoMode = (pfd.dwFlags & PFD_STEREO) ? GL_TRUE : GL_FALSE; |
| 1897 | |
| 1898 | c->base.redBits = pfd.cRedBits; |
| 1899 | c->base.greenBits = pfd.cGreenBits; |
| 1900 | c->base.blueBits = pfd.cBlueBits; |
| 1901 | c->base.alphaBits = pfd.cAlphaBits; |
| 1902 | |
| 1903 | c->base.redMask = BITS_AND_SHIFT_TO_MASK(pfd.cRedBits, pfd.cRedShift); |
| 1904 | c->base.greenMask = |
| 1905 | BITS_AND_SHIFT_TO_MASK(pfd.cGreenBits, pfd.cGreenShift); |
| 1906 | c->base.blueMask = |
| 1907 | BITS_AND_SHIFT_TO_MASK(pfd.cBlueBits, pfd.cBlueShift); |
| 1908 | c->base.alphaMask = |
| 1909 | BITS_AND_SHIFT_TO_MASK(pfd.cAlphaBits, pfd.cAlphaShift); |
| 1910 | |
| 1911 | c->base.rgbBits = pfd.cColorBits; |
| 1912 | |
| 1913 | if (pfd.iPixelType == PFD_TYPE_COLORINDEX) { |
| 1914 | c->base.indexBits = pfd.cColorBits; |
| 1915 | } |
| 1916 | else { |
| 1917 | c->base.indexBits = 0; |
| 1918 | } |
| 1919 | |
| 1920 | c->base.accumRedBits = pfd.cAccumRedBits; |
| 1921 | c->base.accumGreenBits = pfd.cAccumGreenBits; |
| 1922 | c->base.accumBlueBits = pfd.cAccumBlueBits; |
| 1923 | c->base.accumAlphaBits = pfd.cAccumAlphaBits; |
| 1924 | // pfd.cAccumBits; |
| 1925 | |
| 1926 | c->base.depthBits = pfd.cDepthBits; |
| 1927 | c->base.stencilBits = pfd.cStencilBits; |
| 1928 | c->base.numAuxBuffers = pfd.cAuxBuffers; |
| 1929 | |
| 1930 | // pfd.iLayerType; // ignored |
| 1931 | c->base.level = 0; |
| 1932 | // pfd.dwLayerMask; // ignored |
| 1933 | // pfd.dwDamageMask; // ignored |
| 1934 | |
| 1935 | c->base.visualID = -1; // will be set by __glXScreenInit() |
| 1936 | |
| 1937 | /* EXT_visual_rating / GLX 1.2 */ |
| 1938 | if (pfd.dwFlags & PFD_GENERIC_FORMAT) { |
| 1939 | c->base.visualRating = GLX_SLOW_VISUAL_EXT; |
| 1940 | } |
| 1941 | else { |
| 1942 | // PFD_GENERIC_ACCELERATED is not considered, so this may be MCD or ICD acclerated... |
| 1943 | c->base.visualRating = GLX_NONE_EXT; |
| 1944 | } |
| 1945 | |
| 1946 | /* EXT_visual_info / GLX 1.2 */ |
| 1947 | if (pfd.iPixelType == PFD_TYPE_COLORINDEX) { |
| 1948 | c->base.visualType = GLX_STATIC_COLOR; |
| 1949 | c->base.transparentRed = GLX_NONE; |
| 1950 | c->base.transparentGreen = GLX_NONE; |
| 1951 | c->base.transparentBlue = GLX_NONE; |
| 1952 | c->base.transparentAlpha = GLX_NONE; |
| 1953 | c->base.transparentIndex = pfd.dwVisibleMask; |
| 1954 | c->base.transparentPixel = GLX_TRANSPARENT_INDEX; |
| 1955 | } |
| 1956 | else { |
| 1957 | c->base.visualType = GLX_TRUE_COLOR; |
| 1958 | c->base.transparentRed = |
| 1959 | (pfd.dwVisibleMask & c->base.redMask) >> pfd.cRedShift; |
| 1960 | c->base.transparentGreen = |
| 1961 | (pfd.dwVisibleMask & c->base.greenMask) >> pfd.cGreenShift; |
| 1962 | c->base.transparentBlue = |
| 1963 | (pfd.dwVisibleMask & c->base.blueMask) >> pfd.cBlueShift; |
| 1964 | c->base.transparentAlpha = |
| 1965 | (pfd.dwVisibleMask & c->base.alphaMask) >> pfd.cAlphaShift; |
| 1966 | c->base.transparentIndex = GLX_NONE; |
| 1967 | c->base.transparentPixel = GLX_TRANSPARENT_RGB; |
| 1968 | } |
| 1969 | |
| 1970 | /* ARB_multisample / SGIS_multisample */ |
| 1971 | c->base.sampleBuffers = 0; |
| 1972 | c->base.samples = 0; |
| 1973 | |
| 1974 | /* SGIX_fbconfig / GLX 1.3 */ |
| 1975 | c->base.drawableType = |
| 1976 | (((pfd.dwFlags & PFD_DRAW_TO_WINDOW) ? GLX_WINDOW_BIT : 0) |
| 1977 | | ((pfd.dwFlags & PFD_DRAW_TO_BITMAP) ? GLX_PIXMAP_BIT : 0)); |
| 1978 | |
| 1979 | if (pfd.iPixelType == PFD_TYPE_COLORINDEX) { |
| 1980 | c->base.renderType = GLX_RGBA_BIT | GLX_COLOR_INDEX_BIT; |
| 1981 | } |
| 1982 | else { |
| 1983 | c->base.renderType = GLX_RGBA_BIT; |
| 1984 | } |
| 1985 | |
| 1986 | c->base.xRenderable = GL_TRUE; |
| 1987 | c->base.fbconfigID = -1; // will be set by __glXScreenInit() |
| 1988 | |
| 1989 | /* SGIX_pbuffer / GLX 1.3 */ |
| 1990 | // XXX: How can we find these values out ??? |
| 1991 | c->base.maxPbufferWidth = -1; |
| 1992 | c->base.maxPbufferHeight = -1; |
| 1993 | c->base.maxPbufferPixels = -1; |
| 1994 | c->base.optimalPbufferWidth = 0; // there is no optimal value |
| 1995 | c->base.optimalPbufferHeight = 0; |
| 1996 | |
| 1997 | /* SGIX_visual_select_group */ |
| 1998 | // arrange for visuals with the best acceleration to be preferred in selection |
| 1999 | switch (pfd.dwFlags & (PFD_GENERIC_FORMAT | PFD_GENERIC_ACCELERATED)) { |
| 2000 | case 0: |
| 2001 | c->base.visualSelectGroup = 2; |
| 2002 | break; |
| 2003 | |
| 2004 | case PFD_GENERIC_ACCELERATED: |
| 2005 | c->base.visualSelectGroup = 1; |
| 2006 | break; |
| 2007 | |
| 2008 | case PFD_GENERIC_FORMAT: |
| 2009 | c->base.visualSelectGroup = 0; |
| 2010 | break; |
| 2011 | |
| 2012 | default: |
| 2013 | ; |
| 2014 | // "can't happen" |
| 2015 | } |
| 2016 | |
| 2017 | /* OML_swap_method */ |
| 2018 | if (pfd.dwFlags & PFD_SWAP_EXCHANGE) |
| 2019 | c->base.swapMethod = GLX_SWAP_EXCHANGE_OML; |
| 2020 | else if (pfd.dwFlags & PFD_SWAP_COPY) |
| 2021 | c->base.swapMethod = GLX_SWAP_COPY_OML; |
| 2022 | else |
| 2023 | c->base.swapMethod = GLX_SWAP_UNDEFINED_OML; |
| 2024 | |
| 2025 | /* EXT_texture_from_pixmap */ |
| 2026 | c->base.bindToTextureRgb = -1; |
| 2027 | c->base.bindToTextureRgba = -1; |
| 2028 | c->base.bindToMipmapTexture = -1; |
| 2029 | c->base.bindToTextureTargets = -1; |
| 2030 | c->base.yInverted = -1; |
| 2031 | c->base.sRGBCapable = 0; |
| 2032 | |
| 2033 | n++; |
| 2034 | |
| 2035 | // update previous config to point to this config |
| 2036 | if (prev) |
| 2037 | prev->base.next = &(c->base); |
| 2038 | |
| 2039 | prev = c; |
| 2040 | } |
| 2041 | |
| 2042 | GLWIN_DEBUG_MSG |
| 2043 | ("found %d pixelFormats suitable for conversion to fbConfigs", n); |
| 2044 | |
| 2045 | screen->base.numFBConfigs = n; |
| 2046 | screen->base.fbconfigs = &(result->base); |
| 2047 | } |
| 2048 | |
| 2049 | // helper function to access an attribute value from an attribute value array by attribute |
| 2050 | static |
| 2051 | int |
| 2052 | getAttrValue(const int attrs[], int values[], unsigned int num, int attr, |
| 2053 | int fallback) |
| 2054 | { |
| 2055 | unsigned int i; |
| 2056 | |
| 2057 | for (i = 0; i < num; i++) { |
| 2058 | if (attrs[i] == attr) { |
| 2059 | GLWIN_TRACE_MSG("getAttrValue attr 0x%x, value %d", attr, |
| 2060 | values[i]); |
| 2061 | return values[i]; |
| 2062 | } |
| 2063 | } |
| 2064 | |
| 2065 | ErrorF("getAttrValue failed to find attr 0x%x, using default value %d\n", |
| 2066 | attr, fallback); |
| 2067 | return fallback; |
| 2068 | } |
| 2069 | |
| 2070 | // |
| 2071 | // Create the GLXconfigs using wglGetPixelFormatAttribfvARB() extension |
| 2072 | // |
| 2073 | static void |
| 2074 | glxWinCreateConfigsExt(HDC hdc, glxWinScreen * screen) |
| 2075 | { |
| 2076 | GLXWinConfig *c, *result, *prev = NULL; |
| 2077 | int i = 0; |
| 2078 | int n = 0; |
| 2079 | |
| 2080 | const int attr = WGL_NUMBER_PIXEL_FORMATS_ARB; |
| 2081 | int numConfigs; |
| 2082 | |
| 2083 | int attrs[50]; |
| 2084 | unsigned int num_attrs = 0; |
| 2085 | |
| 2086 | GLWIN_DEBUG_MSG("glxWinCreateConfigsExt"); |
| 2087 | |
| 2088 | screen->base.numFBConfigs = 0; |
| 2089 | screen->base.fbconfigs = NULL; |
| 2090 | |
| 2091 | if (!wglGetPixelFormatAttribivARBWrapper(hdc, 0, 0, 1, &attr, &numConfigs)) { |
| 2092 | ErrorF |
| 2093 | ("wglGetPixelFormatAttribivARB failed for WGL_NUMBER_PIXEL_FORMATS_ARB: %s\n", |
| 2094 | glxWinErrorMessage()); |
| 2095 | return; |
| 2096 | } |
| 2097 | |
| 2098 | LogMessage(X_INFO, |
| 2099 | "%d pixel formats reported by wglGetPixelFormatAttribivARB\n", |
| 2100 | numConfigs); |
| 2101 | |
| 2102 | /* alloc */ |
| 2103 | result = malloc(sizeof(GLXWinConfig) * numConfigs); |
| 2104 | |
| 2105 | if (NULL == result) { |
| 2106 | return; |
| 2107 | } |
| 2108 | |
| 2109 | memset(result, 0, sizeof(GLXWinConfig) * numConfigs); |
| 2110 | n = 0; |
| 2111 | |
| 2112 | #define ADD_ATTR(a) { attrs[num_attrs++] = a; assert(num_attrs < NUM_ELEMENTS(attrs)); } |
| 2113 | |
| 2114 | ADD_ATTR(WGL_DRAW_TO_WINDOW_ARB); |
| 2115 | ADD_ATTR(WGL_DRAW_TO_BITMAP_ARB); |
| 2116 | ADD_ATTR(WGL_ACCELERATION_ARB); |
| 2117 | ADD_ATTR(WGL_SWAP_LAYER_BUFFERS_ARB); |
| 2118 | ADD_ATTR(WGL_NUMBER_OVERLAYS_ARB); |
| 2119 | ADD_ATTR(WGL_NUMBER_UNDERLAYS_ARB); |
| 2120 | ADD_ATTR(WGL_TRANSPARENT_ARB); |
| 2121 | ADD_ATTR(WGL_TRANSPARENT_RED_VALUE_ARB); |
| 2122 | ADD_ATTR(WGL_TRANSPARENT_GREEN_VALUE_ARB); |
| 2123 | ADD_ATTR(WGL_TRANSPARENT_GREEN_VALUE_ARB); |
| 2124 | ADD_ATTR(WGL_TRANSPARENT_ALPHA_VALUE_ARB); |
| 2125 | ADD_ATTR(WGL_SUPPORT_OPENGL_ARB); |
| 2126 | ADD_ATTR(WGL_DOUBLE_BUFFER_ARB); |
| 2127 | ADD_ATTR(WGL_STEREO_ARB); |
| 2128 | ADD_ATTR(WGL_PIXEL_TYPE_ARB); |
| 2129 | ADD_ATTR(WGL_COLOR_BITS_ARB); |
| 2130 | ADD_ATTR(WGL_RED_BITS_ARB); |
| 2131 | ADD_ATTR(WGL_RED_SHIFT_ARB); |
| 2132 | ADD_ATTR(WGL_GREEN_BITS_ARB); |
| 2133 | ADD_ATTR(WGL_GREEN_SHIFT_ARB); |
| 2134 | ADD_ATTR(WGL_BLUE_BITS_ARB); |
| 2135 | ADD_ATTR(WGL_BLUE_SHIFT_ARB); |
| 2136 | ADD_ATTR(WGL_ALPHA_BITS_ARB); |
| 2137 | ADD_ATTR(WGL_ALPHA_SHIFT_ARB); |
| 2138 | ADD_ATTR(WGL_ACCUM_RED_BITS_ARB); |
| 2139 | ADD_ATTR(WGL_ACCUM_GREEN_BITS_ARB); |
| 2140 | ADD_ATTR(WGL_ACCUM_BLUE_BITS_ARB); |
| 2141 | ADD_ATTR(WGL_ACCUM_ALPHA_BITS_ARB); |
| 2142 | ADD_ATTR(WGL_DEPTH_BITS_ARB); |
| 2143 | ADD_ATTR(WGL_STENCIL_BITS_ARB); |
| 2144 | ADD_ATTR(WGL_AUX_BUFFERS_ARB); |
| 2145 | ADD_ATTR(WGL_SWAP_METHOD_ARB); |
| 2146 | |
| 2147 | if (screen->has_WGL_ARB_multisample) { |
| 2148 | // we may not query these attrs if WGL_ARB_multisample is not offered |
| 2149 | ADD_ATTR(WGL_SAMPLE_BUFFERS_ARB); |
| 2150 | ADD_ATTR(WGL_SAMPLES_ARB); |
| 2151 | } |
| 2152 | |
| 2153 | if (screen->has_WGL_ARB_render_texture) { |
| 2154 | // we may not query these attrs if WGL_ARB_render_texture is not offered |
| 2155 | ADD_ATTR(WGL_BIND_TO_TEXTURE_RGB_ARB); |
| 2156 | ADD_ATTR(WGL_BIND_TO_TEXTURE_RGBA_ARB); |
| 2157 | } |
| 2158 | |
| 2159 | if (screen->has_WGL_ARB_pbuffer) { |
| 2160 | // we may not query these attrs if WGL_ARB_pbuffer is not offered |
| 2161 | ADD_ATTR(WGL_DRAW_TO_PBUFFER_ARB); |
| 2162 | ADD_ATTR(WGL_MAX_PBUFFER_PIXELS_ARB); |
| 2163 | ADD_ATTR(WGL_MAX_PBUFFER_WIDTH_ARB); |
| 2164 | ADD_ATTR(WGL_MAX_PBUFFER_HEIGHT_ARB); |
| 2165 | } |
| 2166 | |
| 2167 | /* fill in configs */ |
| 2168 | for (i = 0; i < numConfigs; i++) { |
| 2169 | int values[num_attrs]; |
| 2170 | |
| 2171 | c = &(result[i]); |
| 2172 | c->base.next = NULL; |
| 2173 | c->pixelFormatIndex = i + 1; |
| 2174 | |
| 2175 | if (!wglGetPixelFormatAttribivARBWrapper |
| 2176 | (hdc, i + 1, 0, num_attrs, attrs, values)) { |
| 2177 | ErrorF |
| 2178 | ("wglGetPixelFormatAttribivARB failed for index %d, error %s\n", |
| 2179 | i + 1, glxWinErrorMessage()); |
| 2180 | break; |
| 2181 | } |
| 2182 | |
| 2183 | #define ATTR_VALUE(a, d) getAttrValue(attrs, values, num_attrs, (a), (d)) |
| 2184 | |
| 2185 | if (!ATTR_VALUE(WGL_SUPPORT_OPENGL_ARB, 0)) { |
| 2186 | GLWIN_DEBUG_MSG |
| 2187 | ("pixelFormat %d isn't WGL_SUPPORT_OPENGL_ARB, skipping", |
| 2188 | i + 1); |
| 2189 | continue; |
| 2190 | } |
| 2191 | |
| 2192 | c->base.doubleBufferMode = |
| 2193 | ATTR_VALUE(WGL_DOUBLE_BUFFER_ARB, 0) ? GL_TRUE : GL_FALSE; |
| 2194 | c->base.stereoMode = ATTR_VALUE(WGL_STEREO_ARB, 0) ? GL_TRUE : GL_FALSE; |
| 2195 | |
| 2196 | c->base.redBits = ATTR_VALUE(WGL_RED_BITS_ARB, 0); |
| 2197 | c->base.greenBits = ATTR_VALUE(WGL_GREEN_BITS_ARB, 0); |
| 2198 | c->base.blueBits = ATTR_VALUE(WGL_BLUE_BITS_ARB, 0); |
| 2199 | c->base.alphaBits = ATTR_VALUE(WGL_ALPHA_BITS_ARB, 0); |
| 2200 | |
| 2201 | c->base.redMask = |
| 2202 | BITS_AND_SHIFT_TO_MASK(c->base.redBits, |
| 2203 | ATTR_VALUE(WGL_RED_SHIFT_ARB, 0)); |
| 2204 | c->base.greenMask = |
| 2205 | BITS_AND_SHIFT_TO_MASK(c->base.greenBits, |
| 2206 | ATTR_VALUE(WGL_GREEN_SHIFT_ARB, 0)); |
| 2207 | c->base.blueMask = |
| 2208 | BITS_AND_SHIFT_TO_MASK(c->base.blueBits, |
| 2209 | ATTR_VALUE(WGL_BLUE_SHIFT_ARB, 0)); |
| 2210 | c->base.alphaMask = |
| 2211 | BITS_AND_SHIFT_TO_MASK(c->base.alphaBits, |
| 2212 | ATTR_VALUE(WGL_ALPHA_SHIFT_ARB, 0)); |
| 2213 | |
| 2214 | switch (ATTR_VALUE(WGL_PIXEL_TYPE_ARB, 0)) { |
| 2215 | case WGL_TYPE_COLORINDEX_ARB: |
| 2216 | c->base.indexBits = ATTR_VALUE(WGL_COLOR_BITS_ARB, 0); |
| 2217 | c->base.rgbBits = 0; |
| 2218 | c->base.visualType = GLX_STATIC_COLOR; |
| 2219 | break; |
| 2220 | |
| 2221 | case WGL_TYPE_RGBA_FLOAT_ARB: |
| 2222 | GLWIN_DEBUG_MSG |
| 2223 | ("pixelFormat %d is WGL_TYPE_RGBA_FLOAT_ARB, skipping", i + 1); |
| 2224 | continue; |
| 2225 | |
| 2226 | case WGL_TYPE_RGBA_UNSIGNED_FLOAT_EXT: |
| 2227 | GLWIN_DEBUG_MSG |
| 2228 | ("pixelFormat %d is WGL_TYPE_RGBA_UNSIGNED_FLOAT_EXT, skipping", |
| 2229 | i + 1); |
| 2230 | continue; |
| 2231 | |
| 2232 | case WGL_TYPE_RGBA_ARB: |
| 2233 | c->base.indexBits = 0; |
| 2234 | c->base.rgbBits = ATTR_VALUE(WGL_COLOR_BITS_ARB, 0); |
| 2235 | c->base.visualType = GLX_TRUE_COLOR; |
| 2236 | break; |
| 2237 | |
| 2238 | default: |
| 2239 | ErrorF |
| 2240 | ("wglGetPixelFormatAttribivARB returned unknown value 0x%x for WGL_PIXEL_TYPE_ARB\n", |
| 2241 | ATTR_VALUE(WGL_PIXEL_TYPE_ARB, 0)); |
| 2242 | continue; |
| 2243 | } |
| 2244 | |
| 2245 | c->base.accumRedBits = ATTR_VALUE(WGL_ACCUM_RED_BITS_ARB, 0); |
| 2246 | c->base.accumGreenBits = ATTR_VALUE(WGL_ACCUM_GREEN_BITS_ARB, 0); |
| 2247 | c->base.accumBlueBits = ATTR_VALUE(WGL_ACCUM_BLUE_BITS_ARB, 0); |
| 2248 | c->base.accumAlphaBits = ATTR_VALUE(WGL_ACCUM_ALPHA_BITS_ARB, 0); |
| 2249 | |
| 2250 | c->base.depthBits = ATTR_VALUE(WGL_DEPTH_BITS_ARB, 0); |
| 2251 | c->base.stencilBits = ATTR_VALUE(WGL_STENCIL_BITS_ARB, 0); |
| 2252 | c->base.numAuxBuffers = ATTR_VALUE(WGL_AUX_BUFFERS_ARB, 0); |
| 2253 | |
| 2254 | { |
| 2255 | int layers = |
| 2256 | ATTR_VALUE(WGL_NUMBER_OVERLAYS_ARB, |
| 2257 | 0) + ATTR_VALUE(WGL_NUMBER_UNDERLAYS_ARB, 0); |
| 2258 | |
| 2259 | if (layers > 0) { |
| 2260 | ErrorF |
| 2261 | ("pixelFormat %d: has %d overlay, %d underlays which aren't currently handled", |
| 2262 | i, ATTR_VALUE(WGL_NUMBER_OVERLAYS_ARB, 0), |
| 2263 | ATTR_VALUE(WGL_NUMBER_UNDERLAYS_ARB, 0)); |
| 2264 | // XXX: need to iterate over layers? |
| 2265 | } |
| 2266 | } |
| 2267 | c->base.level = 0; |
| 2268 | |
| 2269 | c->base.visualID = -1; // will be set by __glXScreenInit() |
| 2270 | |
| 2271 | /* EXT_visual_rating / GLX 1.2 */ |
| 2272 | switch (ATTR_VALUE(WGL_ACCELERATION_ARB, 0)) { |
| 2273 | default: |
| 2274 | ErrorF |
| 2275 | ("wglGetPixelFormatAttribivARB returned unknown value 0x%x for WGL_ACCELERATION_ARB\n", |
| 2276 | ATTR_VALUE(WGL_ACCELERATION_ARB, 0)); |
| 2277 | |
| 2278 | case WGL_NO_ACCELERATION_ARB: |
| 2279 | c->base.visualRating = GLX_SLOW_VISUAL_EXT; |
| 2280 | break; |
| 2281 | |
| 2282 | case WGL_GENERIC_ACCELERATION_ARB: |
| 2283 | case WGL_FULL_ACCELERATION_ARB: |
| 2284 | c->base.visualRating = GLX_NONE_EXT; |
| 2285 | break; |
| 2286 | } |
| 2287 | |
| 2288 | /* EXT_visual_info / GLX 1.2 */ |
| 2289 | // c->base.visualType is set above |
| 2290 | if (ATTR_VALUE(WGL_TRANSPARENT_ARB, 0)) { |
| 2291 | c->base.transparentPixel = |
| 2292 | (c->base.visualType == |
| 2293 | GLX_TRUE_COLOR) ? GLX_TRANSPARENT_RGB_EXT : |
| 2294 | GLX_TRANSPARENT_INDEX_EXT; |
| 2295 | c->base.transparentRed = |
| 2296 | ATTR_VALUE(WGL_TRANSPARENT_RED_VALUE_ARB, 0); |
| 2297 | c->base.transparentGreen = |
| 2298 | ATTR_VALUE(WGL_TRANSPARENT_GREEN_VALUE_ARB, 0); |
| 2299 | c->base.transparentBlue = |
| 2300 | ATTR_VALUE(WGL_TRANSPARENT_BLUE_VALUE_ARB, 0); |
| 2301 | c->base.transparentAlpha = |
| 2302 | ATTR_VALUE(WGL_TRANSPARENT_ALPHA_VALUE_ARB, 0); |
| 2303 | c->base.transparentIndex = |
| 2304 | ATTR_VALUE(WGL_TRANSPARENT_INDEX_VALUE_ARB, 0); |
| 2305 | } |
| 2306 | else { |
| 2307 | c->base.transparentPixel = GLX_NONE_EXT; |
| 2308 | c->base.transparentRed = GLX_NONE; |
| 2309 | c->base.transparentGreen = GLX_NONE; |
| 2310 | c->base.transparentBlue = GLX_NONE; |
| 2311 | c->base.transparentAlpha = GLX_NONE; |
| 2312 | c->base.transparentIndex = GLX_NONE; |
| 2313 | } |
| 2314 | |
| 2315 | /* ARB_multisample / SGIS_multisample */ |
| 2316 | if (screen->has_WGL_ARB_multisample) { |
| 2317 | c->base.sampleBuffers = ATTR_VALUE(WGL_SAMPLE_BUFFERS_ARB, 0); |
| 2318 | c->base.samples = ATTR_VALUE(WGL_SAMPLES_ARB, 0); |
| 2319 | } |
| 2320 | else { |
| 2321 | c->base.sampleBuffers = 0; |
| 2322 | c->base.samples = 0; |
| 2323 | } |
| 2324 | |
| 2325 | /* SGIX_fbconfig / GLX 1.3 */ |
| 2326 | c->base.drawableType = |
| 2327 | ((ATTR_VALUE(WGL_DRAW_TO_WINDOW_ARB, 0) ? GLX_WINDOW_BIT : 0) |
| 2328 | | (ATTR_VALUE(WGL_DRAW_TO_BITMAP_ARB, 0) ? GLX_PIXMAP_BIT : 0) |
| 2329 | | (ATTR_VALUE(WGL_DRAW_TO_PBUFFER_ARB, 0) ? GLX_PBUFFER_BIT : 0)); |
| 2330 | |
| 2331 | /* |
| 2332 | Assume OpenGL RGBA rendering is available on all visuals |
| 2333 | (it is specified to render to red component in single-channel visuals, |
| 2334 | if supported, but there doesn't seem to be any mechanism to check if it |
| 2335 | is supported) |
| 2336 | |
| 2337 | Color index rendering is only supported on single-channel visuals |
| 2338 | */ |
| 2339 | if (c->base.visualType == GLX_STATIC_COLOR) { |
| 2340 | c->base.renderType = GLX_RGBA_BIT | GLX_COLOR_INDEX_BIT; |
| 2341 | } |
| 2342 | else { |
| 2343 | c->base.renderType = GLX_RGBA_BIT; |
| 2344 | } |
| 2345 | |
| 2346 | c->base.xRenderable = GL_TRUE; |
| 2347 | c->base.fbconfigID = -1; // will be set by __glXScreenInit() |
| 2348 | |
| 2349 | /* SGIX_pbuffer / GLX 1.3 */ |
| 2350 | if (screen->has_WGL_ARB_pbuffer) { |
| 2351 | c->base.maxPbufferWidth = ATTR_VALUE(WGL_MAX_PBUFFER_WIDTH_ARB, -1); |
| 2352 | c->base.maxPbufferHeight = |
| 2353 | ATTR_VALUE(WGL_MAX_PBUFFER_HEIGHT_ARB, -1); |
| 2354 | c->base.maxPbufferPixels = |
| 2355 | ATTR_VALUE(WGL_MAX_PBUFFER_PIXELS_ARB, -1); |
| 2356 | } |
| 2357 | else { |
| 2358 | c->base.maxPbufferWidth = -1; |
| 2359 | c->base.maxPbufferHeight = -1; |
| 2360 | c->base.maxPbufferPixels = -1; |
| 2361 | } |
| 2362 | c->base.optimalPbufferWidth = 0; // there is no optimal value |
| 2363 | c->base.optimalPbufferHeight = 0; |
| 2364 | |
| 2365 | /* SGIX_visual_select_group */ |
| 2366 | // arrange for visuals with the best acceleration to be preferred in selection |
| 2367 | switch (ATTR_VALUE(WGL_ACCELERATION_ARB, 0)) { |
| 2368 | case WGL_FULL_ACCELERATION_ARB: |
| 2369 | c->base.visualSelectGroup = 2; |
| 2370 | break; |
| 2371 | |
| 2372 | case WGL_GENERIC_ACCELERATION_ARB: |
| 2373 | c->base.visualSelectGroup = 1; |
| 2374 | break; |
| 2375 | |
| 2376 | default: |
| 2377 | case WGL_NO_ACCELERATION_ARB: |
| 2378 | c->base.visualSelectGroup = 0; |
| 2379 | break; |
| 2380 | } |
| 2381 | |
| 2382 | /* OML_swap_method */ |
| 2383 | switch (ATTR_VALUE(WGL_SWAP_METHOD_ARB, 0)) { |
| 2384 | case WGL_SWAP_EXCHANGE_ARB: |
| 2385 | c->base.swapMethod = GLX_SWAP_EXCHANGE_OML; |
| 2386 | break; |
| 2387 | |
| 2388 | case WGL_SWAP_COPY_ARB: |
| 2389 | c->base.swapMethod = GLX_SWAP_COPY_OML; |
| 2390 | break; |
| 2391 | |
| 2392 | default: |
| 2393 | ErrorF |
| 2394 | ("wglGetPixelFormatAttribivARB returned unknown value 0x%x for WGL_SWAP_METHOD_ARB\n", |
| 2395 | ATTR_VALUE(WGL_SWAP_METHOD_ARB, 0)); |
| 2396 | |
| 2397 | case WGL_SWAP_UNDEFINED_ARB: |
| 2398 | c->base.swapMethod = GLX_SWAP_UNDEFINED_OML; |
| 2399 | } |
| 2400 | |
| 2401 | /* EXT_texture_from_pixmap */ |
| 2402 | /* |
| 2403 | Mesa's DRI configs always have bindToTextureRgb/Rgba TRUE (see driCreateConfigs(), so setting |
| 2404 | bindToTextureRgb/bindToTextureRgba to FALSE means that swrast can't find any fbConfigs to use, |
| 2405 | so setting these to 0, even if we know bindToTexture isn't available, isn't a good idea... |
| 2406 | */ |
| 2407 | if (screen->has_WGL_ARB_render_texture) { |
| 2408 | c->base.bindToTextureRgb = |
| 2409 | ATTR_VALUE(WGL_BIND_TO_TEXTURE_RGB_ARB, -1); |
| 2410 | c->base.bindToTextureRgba = |
| 2411 | ATTR_VALUE(WGL_BIND_TO_TEXTURE_RGBA_ARB, -1); |
| 2412 | } |
| 2413 | else { |
| 2414 | c->base.bindToTextureRgb = -1; |
| 2415 | c->base.bindToTextureRgba = -1; |
| 2416 | } |
| 2417 | c->base.bindToMipmapTexture = -1; |
| 2418 | c->base.bindToTextureTargets = |
| 2419 | GLX_TEXTURE_1D_BIT_EXT | GLX_TEXTURE_2D_BIT_EXT | |
| 2420 | GLX_TEXTURE_RECTANGLE_BIT_EXT; |
| 2421 | c->base.yInverted = -1; |
| 2422 | c->base.sRGBCapable = 0; |
| 2423 | |
| 2424 | n++; |
| 2425 | |
| 2426 | // update previous config to point to this config |
| 2427 | if (prev) |
| 2428 | prev->base.next = &(c->base); |
| 2429 | |
| 2430 | prev = c; |
| 2431 | } |
| 2432 | |
| 2433 | screen->base.numFBConfigs = n; |
| 2434 | screen->base.fbconfigs = &(result->base); |
| 2435 | } |