jtg | afb833d | 1999-08-19 00:55:39 +0000 | [diff] [blame^] | 1 | /* $Id: fakeglx.c,v 1.1 1999/08/19 00:55:42 jtg Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Mesa 3-D graphics library |
| 5 | * Version: 3.1 |
| 6 | * |
| 7 | * Copyright (C) 1999 Brian Paul All Rights Reserved. |
| 8 | * |
| 9 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 10 | * copy of this software and associated documentation files (the "Software"), |
| 11 | * to deal in the Software without restriction, including without limitation |
| 12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 13 | * and/or sell copies of the Software, and to permit persons to whom the |
| 14 | * Software is furnished to do so, subject to the following conditions: |
| 15 | * |
| 16 | * The above copyright notice and this permission notice shall be included |
| 17 | * in all copies or substantial portions of the Software. |
| 18 | * |
| 19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 20 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 22 | * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
| 23 | * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 24 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 25 | */ |
| 26 | |
| 27 | |
| 28 | |
| 29 | |
| 30 | |
| 31 | /* |
| 32 | * A pseudo-GLX implementation to allow OpenGL/GLX programs to work with Mesa. |
| 33 | * The Fake_glX*() functions implemented here are called from glxapi.c |
| 34 | * |
| 35 | * Thanks to the contributors: |
| 36 | * |
| 37 | * Initial version: Philip Brown (philb@CSUA.Berkeley.EDU) |
| 38 | * Better glXGetConfig() support: Armin Liebchen (liebchen@asylum.cs.utah.edu) |
| 39 | * Further visual-handling refinements: Wolfram Gloger |
| 40 | * (wmglo@Dent.MED.Uni-Muenchen.DE). |
| 41 | * |
| 42 | * Notes: |
| 43 | * Don't be fooled, stereo isn't supported yet. |
| 44 | */ |
| 45 | |
| 46 | |
| 47 | |
| 48 | #ifdef HAVE_CONFIG_H |
| 49 | #include "conf.h" |
| 50 | #endif |
| 51 | |
| 52 | #include <stdio.h> |
| 53 | #include <stdlib.h> |
| 54 | #include <string.h> |
| 55 | #include <X11/Xlib.h> |
| 56 | #include <X11/Xutil.h> |
| 57 | #include "GL/gl.h" |
| 58 | #include "GL/xmesa.h" |
| 59 | #include "context.h" |
| 60 | #include "config.h" |
| 61 | #include "fakeglx.h" |
| 62 | #include "macros.h" |
| 63 | #include "types.h" |
| 64 | #include "xmesaP.h" |
| 65 | |
| 66 | |
| 67 | |
| 68 | #define DONT_CARE -1 |
| 69 | |
| 70 | |
| 71 | |
| 72 | #define MAX_VISUALS 100 |
| 73 | static XMesaVisual VisualTable[MAX_VISUALS]; |
| 74 | static int NumVisuals = 0; |
| 75 | |
| 76 | |
| 77 | |
| 78 | /* |
| 79 | * This struct and some code fragments borrowed |
| 80 | * from Mark Kilgard's GLUT library. |
| 81 | */ |
| 82 | typedef struct _OverlayInfo { |
| 83 | /* Avoid 64-bit portability problems by being careful to use |
| 84 | longs due to the way XGetWindowProperty is specified. Note |
| 85 | that these parameters are passed as CARD32s over X |
| 86 | protocol. */ |
| 87 | unsigned long overlay_visual; |
| 88 | long transparent_type; |
| 89 | long value; |
| 90 | long layer; |
| 91 | } OverlayInfo; |
| 92 | |
| 93 | |
| 94 | |
| 95 | /* Macro to handle c_class vs class field name in XVisualInfo struct */ |
| 96 | #if defined(__cplusplus) || defined(c_plusplus) |
| 97 | #define CLASS c_class |
| 98 | #else |
| 99 | #define CLASS class |
| 100 | #endif |
| 101 | |
| 102 | |
| 103 | |
| 104 | |
| 105 | /* |
| 106 | * Test if the given XVisualInfo is usable for Mesa rendering. |
| 107 | */ |
| 108 | static GLboolean is_usable_visual( XVisualInfo *vinfo ) |
| 109 | { |
| 110 | switch (vinfo->CLASS) { |
| 111 | case StaticGray: |
| 112 | case GrayScale: |
| 113 | /* Any StaticGray/GrayScale visual works in RGB or CI mode */ |
| 114 | return GL_TRUE; |
| 115 | case StaticColor: |
| 116 | case PseudoColor: |
| 117 | /* Any StaticColor/PseudoColor visual of at least 4 bits */ |
| 118 | if (vinfo->depth>=4) { |
| 119 | return GL_TRUE; |
| 120 | } |
| 121 | else { |
| 122 | return GL_FALSE; |
| 123 | } |
| 124 | case TrueColor: |
| 125 | case DirectColor: |
| 126 | /* Any depth of TrueColor or DirectColor works in RGB mode */ |
| 127 | return GL_TRUE; |
| 128 | default: |
| 129 | /* This should never happen */ |
| 130 | return GL_FALSE; |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | |
| 135 | |
| 136 | /* |
| 137 | * Return the level (overlay, normal, underlay) of a given XVisualInfo. |
| 138 | * Input: dpy - the X display |
| 139 | * vinfo - the XVisualInfo to test |
| 140 | * Return: level of the visual: |
| 141 | * 0 = normal planes |
| 142 | * >0 = overlay planes |
| 143 | * <0 = underlay planes |
| 144 | */ |
| 145 | static int level_of_visual( Display *dpy, XVisualInfo *vinfo ) |
| 146 | { |
| 147 | Atom overlayVisualsAtom; |
| 148 | OverlayInfo *overlay_info = NULL; |
| 149 | int numOverlaysPerScreen; |
| 150 | Status status; |
| 151 | Atom actualType; |
| 152 | int actualFormat; |
| 153 | unsigned long sizeData, bytesLeft; |
| 154 | int i; |
| 155 | |
| 156 | /* |
| 157 | * The SERVER_OVERLAY_VISUALS property on the root window contains |
| 158 | * a list of overlay visuals. Get that list now. |
| 159 | */ |
| 160 | overlayVisualsAtom = XInternAtom(dpy,"SERVER_OVERLAY_VISUALS", True); |
| 161 | if (overlayVisualsAtom == None) { |
| 162 | return 0; |
| 163 | } |
| 164 | |
| 165 | status = XGetWindowProperty(dpy, RootWindow( dpy, vinfo->screen ), |
| 166 | overlayVisualsAtom, 0L, (long) 10000, False, |
| 167 | overlayVisualsAtom, &actualType, &actualFormat, |
| 168 | &sizeData, &bytesLeft, |
| 169 | (unsigned char **) &overlay_info ); |
| 170 | |
| 171 | if (status != Success || actualType != overlayVisualsAtom || |
| 172 | actualFormat != 32 || sizeData < 4) { |
| 173 | /* something went wrong */ |
| 174 | XFree((void *) overlay_info); |
| 175 | return 0; |
| 176 | } |
| 177 | |
| 178 | /* search the overlay visual list for the visual ID of interest */ |
| 179 | numOverlaysPerScreen = (int) (sizeData / 4); |
| 180 | for (i=0;i<numOverlaysPerScreen;i++) { |
| 181 | OverlayInfo *ov; |
| 182 | ov = overlay_info + i; |
| 183 | if (ov->overlay_visual==vinfo->visualid) { |
| 184 | /* found the visual */ |
| 185 | if (/*ov->transparent_type==1 &&*/ ov->layer!=0) { |
| 186 | int level = ov->layer; |
| 187 | XFree((void *) overlay_info); |
| 188 | return level; |
| 189 | } |
| 190 | else { |
| 191 | XFree((void *) overlay_info); |
| 192 | return 0; |
| 193 | } |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | /* The visual ID was not found in the overlay list. */ |
| 198 | XFree((void *) overlay_info); |
| 199 | return 0; |
| 200 | } |
| 201 | |
| 202 | |
| 203 | |
| 204 | |
| 205 | /* |
| 206 | * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the |
| 207 | * configuration in our list of GLX visuals. |
| 208 | */ |
| 209 | static XMesaVisual |
| 210 | save_glx_visual( Display *dpy, XVisualInfo *vinfo, |
| 211 | GLboolean rgbFlag, GLboolean alphaFlag, GLboolean dbFlag, |
| 212 | GLboolean stereoFlag, |
| 213 | GLint depth_size, GLint stencil_size, |
| 214 | GLint accum_size, GLint level ) |
| 215 | { |
| 216 | GLboolean ximageFlag = GL_TRUE; |
| 217 | XMesaVisual xmvis; |
| 218 | GLint i; |
| 219 | GLboolean comparePointers; |
| 220 | |
| 221 | if (dbFlag) { |
| 222 | /* Check if the MESA_BACK_BUFFER env var is set */ |
| 223 | char *backbuffer = getenv("MESA_BACK_BUFFER"); |
| 224 | if (backbuffer) { |
| 225 | if (backbuffer[0]=='p' || backbuffer[0]=='P') { |
| 226 | ximageFlag = GL_FALSE; |
| 227 | } |
| 228 | else if (backbuffer[0]=='x' || backbuffer[0]=='X') { |
| 229 | ximageFlag = GL_TRUE; |
| 230 | } |
| 231 | else { |
| 232 | fprintf(stderr, "Mesa: invalid value for MESA_BACK_BUFFER "); |
| 233 | fprintf(stderr, "environment variable, using an XImage.\n"); |
| 234 | } |
| 235 | } |
| 236 | } |
| 237 | |
| 238 | /* Comparing IDs uses less memory but sometimes fails. */ |
| 239 | /* XXX revisit this after 3.0 is finished. */ |
| 240 | if (getenv("MESA_GLX_VISUAL_HACK")) |
| 241 | comparePointers = GL_TRUE; |
| 242 | else |
| 243 | comparePointers = GL_FALSE; |
| 244 | |
| 245 | /* First check if a matching visual is already in the list */ |
| 246 | for (i=0; i<NumVisuals; i++) { |
| 247 | XMesaVisual v = VisualTable[i]; |
| 248 | if (v->display == dpy |
| 249 | && v->level == level |
| 250 | && v->ximage_flag == ximageFlag |
| 251 | && v->gl_visual->RGBAflag == rgbFlag |
| 252 | && v->gl_visual->DBflag == dbFlag |
| 253 | && v->gl_visual->StereoFlag == stereoFlag |
| 254 | && (v->gl_visual->AlphaBits > 0) == alphaFlag |
| 255 | && (v->gl_visual->DepthBits >= depth_size || depth_size == 0) |
| 256 | && (v->gl_visual->StencilBits >= stencil_size || stencil_size == 0) |
| 257 | && (v->gl_visual->AccumBits >= accum_size || accum_size == 0)) { |
| 258 | /* now either compare XVisualInfo pointers or visual IDs */ |
| 259 | if ((!comparePointers && v->vishandle->visualid == vinfo->visualid) |
| 260 | || (comparePointers && v->vishandle == vinfo)) { |
| 261 | return v; |
| 262 | } |
| 263 | } |
| 264 | } |
| 265 | |
| 266 | /* Create a new visual and add it to the list. */ |
| 267 | |
| 268 | if (NumVisuals>=MAX_VISUALS) { |
| 269 | fprintf( stderr, "GLX Error: maximum number of visuals exceeded\n"); |
| 270 | return NULL; |
| 271 | } |
| 272 | |
| 273 | xmvis = XMesaCreateVisual( dpy, vinfo, rgbFlag, alphaFlag, dbFlag, |
| 274 | stereoFlag, ximageFlag, |
| 275 | depth_size, stencil_size, accum_size, level ); |
| 276 | if (xmvis) { |
| 277 | VisualTable[NumVisuals] = xmvis; |
| 278 | NumVisuals++; |
| 279 | } |
| 280 | return xmvis; |
| 281 | } |
| 282 | |
| 283 | |
| 284 | |
| 285 | /* |
| 286 | * Create a GLX visual from a regular XVisualInfo. |
| 287 | */ |
| 288 | static XMesaVisual |
| 289 | create_glx_visual( Display *dpy, XVisualInfo *visinfo ) |
| 290 | { |
| 291 | int vislevel; |
| 292 | |
| 293 | vislevel = level_of_visual( dpy, visinfo ); |
| 294 | if (vislevel) { |
| 295 | /* Configure this visual as a CI, single-buffered overlay */ |
| 296 | return save_glx_visual( dpy, visinfo, |
| 297 | GL_FALSE, /* rgb */ |
| 298 | GL_FALSE, /* alpha */ |
| 299 | GL_FALSE, /* double */ |
| 300 | GL_FALSE, /* stereo */ |
| 301 | 0, /* depth bits */ |
| 302 | 0, /* stencil bits */ |
| 303 | 0, /* accum bits */ |
| 304 | vislevel /* level */ |
| 305 | ); |
| 306 | } |
| 307 | else if (is_usable_visual( visinfo )) { |
| 308 | /* Configure this visual as RGB, double-buffered, depth-buffered. */ |
| 309 | /* This is surely wrong for some people's needs but what else */ |
| 310 | /* can be done? They should use glXChooseVisual(). */ |
| 311 | return save_glx_visual( dpy, visinfo, |
| 312 | GL_TRUE, /* rgb */ |
| 313 | GL_FALSE, /* alpha */ |
| 314 | GL_TRUE, /* double */ |
| 315 | GL_FALSE, /* stereo */ |
| 316 | 8*sizeof(GLdepth), |
| 317 | 8*sizeof(GLstencil), |
| 318 | 8*sizeof(GLaccum), |
| 319 | 0 /* level */ |
| 320 | ); |
| 321 | } |
| 322 | else { |
| 323 | fprintf(stderr,"Mesa: error in glXCreateContext: bad visual\n"); |
| 324 | return NULL; |
| 325 | } |
| 326 | } |
| 327 | |
| 328 | |
| 329 | |
| 330 | /* |
| 331 | * Find the GLX visual associated with an XVisualInfo. |
| 332 | */ |
| 333 | static XMesaVisual |
| 334 | find_glx_visual( Display *dpy, XVisualInfo *vinfo ) |
| 335 | { |
| 336 | int i; |
| 337 | |
| 338 | /* First try to match pointers */ |
| 339 | for (i=0;i<NumVisuals;i++) { |
| 340 | if (VisualTable[i]->display==dpy && VisualTable[i]->vishandle==vinfo) { |
| 341 | return VisualTable[i]; |
| 342 | } |
| 343 | } |
| 344 | /* try to match visual id */ |
| 345 | for (i=0;i<NumVisuals;i++) { |
| 346 | if (VisualTable[i]->display==dpy |
| 347 | && VisualTable[i]->visinfo->visualid == vinfo->visualid) { |
| 348 | return VisualTable[i]; |
| 349 | } |
| 350 | } |
| 351 | return NULL; |
| 352 | } |
| 353 | |
| 354 | |
| 355 | |
| 356 | /* |
| 357 | * Return the transparent pixel value for a GLX visual. |
| 358 | * Input: glxvis - the glx_visual |
| 359 | * Return: a pixel value or -1 if no transparent pixel |
| 360 | */ |
| 361 | static int transparent_pixel( XMesaVisual glxvis ) |
| 362 | { |
| 363 | Display *dpy = glxvis->display; |
| 364 | XVisualInfo *vinfo = glxvis->visinfo; |
| 365 | Atom overlayVisualsAtom; |
| 366 | OverlayInfo *overlay_info = NULL; |
| 367 | int numOverlaysPerScreen; |
| 368 | Status status; |
| 369 | Atom actualType; |
| 370 | int actualFormat; |
| 371 | unsigned long sizeData, bytesLeft; |
| 372 | int i; |
| 373 | |
| 374 | /* |
| 375 | * The SERVER_OVERLAY_VISUALS property on the root window contains |
| 376 | * a list of overlay visuals. Get that list now. |
| 377 | */ |
| 378 | overlayVisualsAtom = XInternAtom(dpy,"SERVER_OVERLAY_VISUALS", True); |
| 379 | if (overlayVisualsAtom == None) { |
| 380 | return -1; |
| 381 | } |
| 382 | |
| 383 | status = XGetWindowProperty(dpy, RootWindow( dpy, vinfo->screen ), |
| 384 | overlayVisualsAtom, 0L, (long) 10000, False, |
| 385 | overlayVisualsAtom, &actualType, &actualFormat, |
| 386 | &sizeData, &bytesLeft, |
| 387 | (unsigned char **) &overlay_info ); |
| 388 | |
| 389 | if (status != Success || actualType != overlayVisualsAtom || |
| 390 | actualFormat != 32 || sizeData < 4) { |
| 391 | /* something went wrong */ |
| 392 | XFree((void *) overlay_info); |
| 393 | return -1; |
| 394 | } |
| 395 | |
| 396 | /* search the overlay visual list for the visual ID of interest */ |
| 397 | numOverlaysPerScreen = (int) (sizeData / 4); |
| 398 | for (i=0;i<numOverlaysPerScreen;i++) { |
| 399 | OverlayInfo *ov; |
| 400 | ov = overlay_info + i; |
| 401 | if (ov->overlay_visual==vinfo->visualid) { |
| 402 | /* found it! */ |
| 403 | if (ov->transparent_type==0) { |
| 404 | /* type 0 indicates no transparency */ |
| 405 | XFree((void *) overlay_info); |
| 406 | return -1; |
| 407 | } |
| 408 | else { |
| 409 | /* ov->value is the transparent pixel */ |
| 410 | XFree((void *) overlay_info); |
| 411 | return ov->value; |
| 412 | } |
| 413 | } |
| 414 | } |
| 415 | |
| 416 | /* The visual ID was not found in the overlay list. */ |
| 417 | XFree((void *) overlay_info); |
| 418 | return -1; |
| 419 | } |
| 420 | |
| 421 | |
| 422 | |
| 423 | /* |
| 424 | * Return number of bits set in n. |
| 425 | */ |
| 426 | static int bitcount( unsigned long n ) |
| 427 | { |
| 428 | int bits; |
| 429 | for (bits=0; n>0; n=n>>1) { |
| 430 | if (n&1) { |
| 431 | bits++; |
| 432 | } |
| 433 | } |
| 434 | return bits; |
| 435 | } |
| 436 | |
| 437 | |
| 438 | /* |
| 439 | * Try to get an X visual which matches the given arguments. |
| 440 | */ |
| 441 | static XVisualInfo *get_visual( Display *dpy, int scr, |
| 442 | unsigned int depth, int xclass ) |
| 443 | { |
| 444 | XVisualInfo temp, *vis; |
| 445 | long mask; |
| 446 | int n; |
| 447 | unsigned int default_depth; |
| 448 | int default_class; |
| 449 | |
| 450 | mask = VisualScreenMask | VisualDepthMask | VisualClassMask; |
| 451 | temp.screen = scr; |
| 452 | temp.depth = depth; |
| 453 | temp.CLASS = xclass; |
| 454 | |
| 455 | default_depth = DefaultDepth(dpy,scr); |
| 456 | default_class = DefaultVisual(dpy,scr)->CLASS; |
| 457 | |
| 458 | if (depth==default_depth && xclass==default_class) { |
| 459 | /* try to get root window's visual */ |
| 460 | temp.visualid = DefaultVisual(dpy,scr)->visualid; |
| 461 | mask |= VisualIDMask; |
| 462 | } |
| 463 | |
| 464 | vis = XGetVisualInfo( dpy, mask, &temp, &n ); |
| 465 | |
| 466 | /* In case bits/pixel > 24, make sure color channels are still <=8 bits. |
| 467 | * An SGI Infinite Reality system, for example, can have 30bpp pixels: |
| 468 | * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel. |
| 469 | */ |
| 470 | if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) { |
| 471 | if (bitcount(vis->red_mask) <= 8 |
| 472 | && bitcount(vis->green_mask) <= 8 |
| 473 | && bitcount(vis->blue_mask) <= 8) { |
| 474 | return vis; |
| 475 | } |
| 476 | else { |
| 477 | XFree((void *) vis); |
| 478 | return NULL; |
| 479 | } |
| 480 | } |
| 481 | |
| 482 | return vis; |
| 483 | } |
| 484 | |
| 485 | |
| 486 | |
| 487 | /* |
| 488 | * Retrieve the value of the given environment variable and find |
| 489 | * the X visual which matches it. |
| 490 | * Input: dpy - the display |
| 491 | * screen - the screen number |
| 492 | * varname - the name of the environment variable |
| 493 | * Return: an XVisualInfo pointer to NULL if error. |
| 494 | */ |
| 495 | static XVisualInfo *get_env_visual(Display *dpy, int scr, const char *varname) |
| 496 | { |
| 497 | char value[100], type[100]; |
| 498 | int depth, xclass = -1; |
| 499 | XVisualInfo *vis; |
| 500 | |
| 501 | if (!getenv( varname )) { |
| 502 | return NULL; |
| 503 | } |
| 504 | |
| 505 | strncpy( value, getenv(varname), 100 ); |
| 506 | value[99] = 0; |
| 507 | |
| 508 | sscanf( value, "%s %d", type, &depth ); |
| 509 | |
| 510 | if (strcmp(type,"TrueColor")==0) xclass = TrueColor; |
| 511 | else if (strcmp(type,"DirectColor")==0) xclass = DirectColor; |
| 512 | else if (strcmp(type,"PseudoColor")==0) xclass = PseudoColor; |
| 513 | else if (strcmp(type,"StaticColor")==0) xclass = StaticColor; |
| 514 | else if (strcmp(type,"GrayScale")==0) xclass = GrayScale; |
| 515 | else if (strcmp(type,"StaticGray")==0) xclass = StaticGray; |
| 516 | |
| 517 | if (xclass>-1 && depth>0) { |
| 518 | vis = get_visual( dpy, scr, depth, xclass ); |
| 519 | if (vis) { |
| 520 | return vis; |
| 521 | } |
| 522 | } |
| 523 | |
| 524 | fprintf( stderr, "Mesa: GLX unable to find visual class=%s, depth=%d.\n", |
| 525 | type, depth ); |
| 526 | return NULL; |
| 527 | } |
| 528 | |
| 529 | |
| 530 | |
| 531 | /* |
| 532 | * Select an X visual which satisfies the RGBA/CI flag and minimum depth. |
| 533 | * Input: dpy, screen - X display and screen number |
| 534 | * rgba - GL_TRUE = RGBA mode, GL_FALSE = CI mode |
| 535 | * min_depth - minimum visual depth |
| 536 | * preferred_class - preferred GLX visual class or DONT_CARE |
| 537 | * Return: pointer to an XVisualInfo or NULL. |
| 538 | */ |
| 539 | static XVisualInfo *choose_x_visual( Display *dpy, int screen, |
| 540 | GLboolean rgba, int min_depth, |
| 541 | int preferred_class ) |
| 542 | { |
| 543 | XVisualInfo *vis; |
| 544 | int xclass, visclass; |
| 545 | int depth; |
| 546 | |
| 547 | if (rgba) { |
| 548 | Atom hp_cr_maps = XInternAtom(dpy, "_HP_RGB_SMOOTH_MAP_LIST", True); |
| 549 | /* First see if the MESA_RGB_VISUAL env var is defined */ |
| 550 | vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" ); |
| 551 | if (vis) { |
| 552 | return vis; |
| 553 | } |
| 554 | /* Otherwise, search for a suitable visual */ |
| 555 | if (preferred_class==DONT_CARE) { |
| 556 | for (xclass=0;xclass<6;xclass++) { |
| 557 | switch (xclass) { |
| 558 | case 0: visclass = TrueColor; break; |
| 559 | case 1: visclass = DirectColor; break; |
| 560 | case 2: visclass = PseudoColor; break; |
| 561 | case 3: visclass = StaticColor; break; |
| 562 | case 4: visclass = GrayScale; break; |
| 563 | case 5: visclass = StaticGray; break; |
| 564 | } |
| 565 | if (min_depth==0) { |
| 566 | /* start with shallowest */ |
| 567 | for (depth=0;depth<=32;depth++) { |
| 568 | if (visclass==TrueColor && depth==8 && !hp_cr_maps) { |
| 569 | /* Special case: try to get 8-bit PseudoColor before */ |
| 570 | /* 8-bit TrueColor */ |
| 571 | vis = get_visual( dpy, screen, 8, PseudoColor ); |
| 572 | if (vis) { |
| 573 | return vis; |
| 574 | } |
| 575 | } |
| 576 | vis = get_visual( dpy, screen, depth, visclass ); |
| 577 | if (vis) { |
| 578 | return vis; |
| 579 | } |
| 580 | } |
| 581 | } |
| 582 | else { |
| 583 | /* start with deepest */ |
| 584 | for (depth=32;depth>=min_depth;depth--) { |
| 585 | if (visclass==TrueColor && depth==8 && !hp_cr_maps) { |
| 586 | /* Special case: try to get 8-bit PseudoColor before */ |
| 587 | /* 8-bit TrueColor */ |
| 588 | vis = get_visual( dpy, screen, 8, PseudoColor ); |
| 589 | if (vis) { |
| 590 | return vis; |
| 591 | } |
| 592 | } |
| 593 | vis = get_visual( dpy, screen, depth, visclass ); |
| 594 | if (vis) { |
| 595 | return vis; |
| 596 | } |
| 597 | } |
| 598 | } |
| 599 | } |
| 600 | } |
| 601 | else { |
| 602 | /* search for a specific visual class */ |
| 603 | switch (preferred_class) { |
| 604 | case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break; |
| 605 | case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break; |
| 606 | case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break; |
| 607 | case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break; |
| 608 | case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break; |
| 609 | case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break; |
| 610 | default: return NULL; |
| 611 | } |
| 612 | if (min_depth==0) { |
| 613 | /* start with shallowest */ |
| 614 | for (depth=0;depth<=32;depth++) { |
| 615 | vis = get_visual( dpy, screen, depth, visclass ); |
| 616 | if (vis) { |
| 617 | return vis; |
| 618 | } |
| 619 | } |
| 620 | } |
| 621 | else { |
| 622 | /* start with deepest */ |
| 623 | for (depth=32;depth>=min_depth;depth--) { |
| 624 | vis = get_visual( dpy, screen, depth, visclass ); |
| 625 | if (vis) { |
| 626 | return vis; |
| 627 | } |
| 628 | } |
| 629 | } |
| 630 | } |
| 631 | } |
| 632 | else { |
| 633 | /* First see if the MESA_CI_VISUAL env var is defined */ |
| 634 | vis = get_env_visual( dpy, screen, "MESA_CI_VISUAL" ); |
| 635 | if (vis) { |
| 636 | return vis; |
| 637 | } |
| 638 | /* Otherwise, search for a suitable visual, starting with shallowest */ |
| 639 | if (preferred_class==DONT_CARE) { |
| 640 | for (xclass=0;xclass<4;xclass++) { |
| 641 | switch (xclass) { |
| 642 | case 0: visclass = PseudoColor; break; |
| 643 | case 1: visclass = StaticColor; break; |
| 644 | case 2: visclass = GrayScale; break; |
| 645 | case 3: visclass = StaticGray; break; |
| 646 | } |
| 647 | /* try 8-bit up through 16-bit */ |
| 648 | for (depth=8;depth<=16;depth++) { |
| 649 | vis = get_visual( dpy, screen, depth, visclass ); |
| 650 | if (vis) { |
| 651 | return vis; |
| 652 | } |
| 653 | } |
| 654 | /* try min_depth up to 8-bit */ |
| 655 | for (depth=min_depth;depth<8;depth++) { |
| 656 | vis = get_visual( dpy, screen, depth, visclass ); |
| 657 | if (vis) { |
| 658 | return vis; |
| 659 | } |
| 660 | } |
| 661 | } |
| 662 | } |
| 663 | else { |
| 664 | /* search for a specific visual class */ |
| 665 | switch (preferred_class) { |
| 666 | case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break; |
| 667 | case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break; |
| 668 | case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break; |
| 669 | case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break; |
| 670 | case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break; |
| 671 | case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break; |
| 672 | default: return NULL; |
| 673 | } |
| 674 | /* try 8-bit up through 16-bit */ |
| 675 | for (depth=8;depth<=16;depth++) { |
| 676 | vis = get_visual( dpy, screen, depth, visclass ); |
| 677 | if (vis) { |
| 678 | return vis; |
| 679 | } |
| 680 | } |
| 681 | /* try min_depth up to 8-bit */ |
| 682 | for (depth=min_depth;depth<8;depth++) { |
| 683 | vis = get_visual( dpy, screen, depth, visclass ); |
| 684 | if (vis) { |
| 685 | return vis; |
| 686 | } |
| 687 | } |
| 688 | } |
| 689 | } |
| 690 | |
| 691 | /* didn't find a visual */ |
| 692 | return NULL; |
| 693 | } |
| 694 | |
| 695 | |
| 696 | |
| 697 | /* |
| 698 | * Find the deepest X over/underlay visual of at least min_depth. |
| 699 | * Input: dpy, screen - X display and screen number |
| 700 | * level - the over/underlay level |
| 701 | * trans_type - transparent pixel type: GLX_NONE_EXT, |
| 702 | * GLX_TRANSPARENT_RGB_EXT, GLX_TRANSPARENT_INDEX_EXT, |
| 703 | * or DONT_CARE |
| 704 | * trans_value - transparent pixel value or DONT_CARE |
| 705 | * min_depth - minimum visual depth |
| 706 | * preferred_class - preferred GLX visual class or DONT_CARE |
| 707 | * Return: pointer to an XVisualInfo or NULL. |
| 708 | */ |
| 709 | static XVisualInfo *choose_x_overlay_visual( Display *dpy, int scr, |
| 710 | int level, int trans_type, |
| 711 | int trans_value, |
| 712 | int min_depth, |
| 713 | int preferred_class ) |
| 714 | { |
| 715 | Atom overlayVisualsAtom; |
| 716 | OverlayInfo *overlay_info; |
| 717 | int numOverlaysPerScreen; |
| 718 | Status status; |
| 719 | Atom actualType; |
| 720 | int actualFormat; |
| 721 | unsigned long sizeData, bytesLeft; |
| 722 | int i; |
| 723 | XVisualInfo *deepvis; |
| 724 | int deepest; |
| 725 | |
| 726 | /*DEBUG int tt, tv; */ |
| 727 | |
| 728 | switch (preferred_class) { |
| 729 | case GLX_TRUE_COLOR_EXT: preferred_class = TrueColor; break; |
| 730 | case GLX_DIRECT_COLOR_EXT: preferred_class = DirectColor; break; |
| 731 | case GLX_PSEUDO_COLOR_EXT: preferred_class = PseudoColor; break; |
| 732 | case GLX_STATIC_COLOR_EXT: preferred_class = StaticColor; break; |
| 733 | case GLX_GRAY_SCALE_EXT: preferred_class = GrayScale; break; |
| 734 | case GLX_STATIC_GRAY_EXT: preferred_class = StaticGray; break; |
| 735 | default: preferred_class = DONT_CARE; |
| 736 | } |
| 737 | |
| 738 | /* |
| 739 | * The SERVER_OVERLAY_VISUALS property on the root window contains |
| 740 | * a list of overlay visuals. Get that list now. |
| 741 | */ |
| 742 | overlayVisualsAtom = XInternAtom(dpy,"SERVER_OVERLAY_VISUALS", True); |
| 743 | if (overlayVisualsAtom == (Atom) None) { |
| 744 | return NULL; |
| 745 | } |
| 746 | |
| 747 | status = XGetWindowProperty(dpy, RootWindow( dpy, scr ), |
| 748 | overlayVisualsAtom, 0L, (long) 10000, False, |
| 749 | overlayVisualsAtom, &actualType, &actualFormat, |
| 750 | &sizeData, &bytesLeft, |
| 751 | (unsigned char **) &overlay_info ); |
| 752 | |
| 753 | if (status != Success || actualType != overlayVisualsAtom || |
| 754 | actualFormat != 32 || sizeData < 4) { |
| 755 | /* something went wrong */ |
| 756 | return NULL; |
| 757 | } |
| 758 | |
| 759 | /* Search for the deepest overlay which satisifies all criteria. */ |
| 760 | deepest = min_depth; |
| 761 | deepvis = NULL; |
| 762 | |
| 763 | numOverlaysPerScreen = (int) (sizeData / 4); |
| 764 | for (i=0;i<numOverlaysPerScreen;i++) { |
| 765 | XVisualInfo *vislist, vistemplate; |
| 766 | int count; |
| 767 | OverlayInfo *ov; |
| 768 | ov = overlay_info + i; |
| 769 | |
| 770 | if (ov->layer!=level) { |
| 771 | /* failed overlay level criteria */ |
| 772 | continue; |
| 773 | } |
| 774 | if (!(trans_type==DONT_CARE |
| 775 | || (trans_type==GLX_TRANSPARENT_INDEX_EXT |
| 776 | && ov->transparent_type>0) |
| 777 | || (trans_type==GLX_NONE_EXT && ov->transparent_type==0))) { |
| 778 | /* failed transparent pixel type criteria */ |
| 779 | continue; |
| 780 | } |
| 781 | if (trans_value!=DONT_CARE && trans_value!=ov->value) { |
| 782 | /* failed transparent pixel value criteria */ |
| 783 | continue; |
| 784 | } |
| 785 | |
| 786 | /* get XVisualInfo and check the depth */ |
| 787 | vistemplate.visualid = ov->overlay_visual; |
| 788 | vistemplate.screen = scr; |
| 789 | vislist = XGetVisualInfo( dpy, VisualIDMask | VisualScreenMask, |
| 790 | &vistemplate, &count ); |
| 791 | |
| 792 | if (count!=1) { |
| 793 | /* something went wrong */ |
| 794 | continue; |
| 795 | } |
| 796 | if (preferred_class!=DONT_CARE && preferred_class!=vislist->CLASS) { |
| 797 | /* wrong visual class */ |
| 798 | continue; |
| 799 | } |
| 800 | |
| 801 | if (deepvis==NULL || vislist->depth > deepest) { |
| 802 | /* YES! found a satisfactory visual */ |
| 803 | if (deepvis) { |
| 804 | free( deepvis ); |
| 805 | } |
| 806 | deepest = vislist->depth; |
| 807 | deepvis = vislist; |
| 808 | /* DEBUG tt = ov->transparent_type;*/ |
| 809 | /* DEBUG tv = ov->value; */ |
| 810 | } |
| 811 | } |
| 812 | |
| 813 | /*DEBUG |
| 814 | if (deepvis) { |
| 815 | printf("chose 0x%x: layer=%d depth=%d trans_type=%d trans_value=%d\n", |
| 816 | deepvis->visualid, level, deepvis->depth, tt, tv ); |
| 817 | } |
| 818 | */ |
| 819 | return deepvis; |
| 820 | } |
| 821 | |
| 822 | |
| 823 | |
| 824 | XVisualInfo *Fake_glXChooseVisual( Display *dpy, int screen, int *list ) |
| 825 | { |
| 826 | int *parselist; |
| 827 | XVisualInfo *vis; |
| 828 | int min_ci = 0; |
| 829 | int min_red=0, min_green=0, min_blue=0; |
| 830 | GLboolean rgb_flag = GL_FALSE; |
| 831 | GLboolean alpha_flag = GL_FALSE; |
| 832 | GLboolean double_flag = GL_FALSE; |
| 833 | GLboolean stereo_flag = GL_FALSE; |
| 834 | GLint depth_size = 0; |
| 835 | GLint stencil_size = 0; |
| 836 | GLint accum_size = 0; |
| 837 | int level = 0; |
| 838 | int visual_type = DONT_CARE; |
| 839 | int trans_type = DONT_CARE; |
| 840 | int trans_value = DONT_CARE; |
| 841 | |
| 842 | parselist = list; |
| 843 | |
| 844 | while (*parselist) { |
| 845 | |
| 846 | switch (*parselist) { |
| 847 | case GLX_USE_GL: |
| 848 | /* ignore */ |
| 849 | parselist++; |
| 850 | break; |
| 851 | case GLX_BUFFER_SIZE: |
| 852 | parselist++; |
| 853 | min_ci = *parselist++; |
| 854 | break; |
| 855 | case GLX_LEVEL: |
| 856 | parselist++; |
| 857 | level = *parselist++; |
| 858 | break; |
| 859 | case GLX_RGBA: |
| 860 | rgb_flag = GL_TRUE; |
| 861 | parselist++; |
| 862 | break; |
| 863 | case GLX_DOUBLEBUFFER: |
| 864 | double_flag = GL_TRUE; |
| 865 | parselist++; |
| 866 | break; |
| 867 | case GLX_STEREO: |
| 868 | stereo_flag = GL_TRUE; |
| 869 | return NULL; |
| 870 | case GLX_AUX_BUFFERS: |
| 871 | /* ignore */ |
| 872 | parselist++; |
| 873 | parselist++; |
| 874 | break; |
| 875 | case GLX_RED_SIZE: |
| 876 | parselist++; |
| 877 | min_red = *parselist++; |
| 878 | break; |
| 879 | case GLX_GREEN_SIZE: |
| 880 | parselist++; |
| 881 | min_green = *parselist++; |
| 882 | break; |
| 883 | case GLX_BLUE_SIZE: |
| 884 | parselist++; |
| 885 | min_blue = *parselist++; |
| 886 | break; |
| 887 | case GLX_ALPHA_SIZE: |
| 888 | parselist++; |
| 889 | { |
| 890 | GLint size = *parselist++; |
| 891 | alpha_flag = size>0 ? 1 : 0; |
| 892 | } |
| 893 | break; |
| 894 | case GLX_DEPTH_SIZE: |
| 895 | parselist++; |
| 896 | depth_size = *parselist++; |
| 897 | break; |
| 898 | case GLX_STENCIL_SIZE: |
| 899 | parselist++; |
| 900 | stencil_size = *parselist++; |
| 901 | break; |
| 902 | case GLX_ACCUM_RED_SIZE: |
| 903 | case GLX_ACCUM_GREEN_SIZE: |
| 904 | case GLX_ACCUM_BLUE_SIZE: |
| 905 | case GLX_ACCUM_ALPHA_SIZE: |
| 906 | parselist++; |
| 907 | { |
| 908 | GLint size = *parselist++; |
| 909 | accum_size = MAX2( accum_size, size ); |
| 910 | } |
| 911 | break; |
| 912 | |
| 913 | /* |
| 914 | * GLX_EXT_visual_info extension |
| 915 | */ |
| 916 | case GLX_X_VISUAL_TYPE_EXT: |
| 917 | parselist++; |
| 918 | visual_type = *parselist++; |
| 919 | break; |
| 920 | case GLX_TRANSPARENT_TYPE_EXT: |
| 921 | parselist++; |
| 922 | trans_type = *parselist++; |
| 923 | break; |
| 924 | case GLX_TRANSPARENT_INDEX_VALUE_EXT: |
| 925 | parselist++; |
| 926 | trans_value = *parselist++; |
| 927 | break; |
| 928 | case GLX_TRANSPARENT_RED_VALUE_EXT: |
| 929 | case GLX_TRANSPARENT_GREEN_VALUE_EXT: |
| 930 | case GLX_TRANSPARENT_BLUE_VALUE_EXT: |
| 931 | case GLX_TRANSPARENT_ALPHA_VALUE_EXT: |
| 932 | /* ignore */ |
| 933 | parselist++; |
| 934 | parselist++; |
| 935 | break; |
| 936 | |
| 937 | case None: |
| 938 | break; |
| 939 | default: |
| 940 | /* undefined attribute */ |
| 941 | return NULL; |
| 942 | } |
| 943 | } |
| 944 | |
| 945 | /* |
| 946 | * Since we're only simulating the GLX extension this function will never |
| 947 | * find any real GL visuals. Instead, all we can do is try to find an RGB |
| 948 | * or CI visual of appropriate depth. Other requested attributes such as |
| 949 | * double buffering, depth buffer, etc. will be associated with the X |
| 950 | * visual and stored in the VisualTable[]. |
| 951 | */ |
| 952 | if (level==0) { |
| 953 | /* normal color planes */ |
| 954 | if (rgb_flag) { |
| 955 | /* Get an RGB visual */ |
| 956 | int min_rgb = min_red + min_green + min_blue; |
| 957 | if (min_rgb>1 && min_rgb<8) { |
| 958 | /* a special case to be sure we can get a monochrome visual */ |
| 959 | min_rgb = 1; |
| 960 | } |
| 961 | vis = choose_x_visual( dpy, screen, rgb_flag, min_rgb, visual_type ); |
| 962 | } |
| 963 | else { |
| 964 | /* Get a color index visual */ |
| 965 | vis = choose_x_visual( dpy, screen, rgb_flag, min_ci, visual_type ); |
| 966 | accum_size = 0; |
| 967 | } |
| 968 | } |
| 969 | else { |
| 970 | /* over/underlay planes */ |
| 971 | vis = choose_x_overlay_visual( dpy, screen, level, trans_type, |
| 972 | trans_value, min_ci, visual_type ); |
| 973 | } |
| 974 | |
| 975 | if (vis) { |
| 976 | if (!save_glx_visual( dpy, vis, rgb_flag, alpha_flag, double_flag, |
| 977 | stereo_flag, |
| 978 | depth_size, stencil_size, accum_size, level )) |
| 979 | return NULL; |
| 980 | } |
| 981 | |
| 982 | return vis; |
| 983 | } |
| 984 | |
| 985 | |
| 986 | |
| 987 | |
| 988 | GLXContext Fake_glXCreateContext( Display *dpy, XVisualInfo *visinfo, |
| 989 | GLXContext share_list, Bool direct ) |
| 990 | { |
| 991 | XMesaVisual glxvis; |
| 992 | XMesaContext xmctx; |
| 993 | |
| 994 | /* deallocate unused windows/buffers */ |
| 995 | XMesaGarbageCollect(); |
| 996 | |
| 997 | glxvis = find_glx_visual( dpy, visinfo ); |
| 998 | if (!glxvis) { |
| 999 | /* This visual wasn't found with glXChooseVisual() */ |
| 1000 | glxvis = create_glx_visual( dpy, visinfo ); |
| 1001 | if (!glxvis) { |
| 1002 | /* unusable visual */ |
| 1003 | return NULL; |
| 1004 | } |
| 1005 | } |
| 1006 | |
| 1007 | xmctx = XMesaCreateContext( glxvis, (XMesaContext) share_list ); |
| 1008 | if (xmctx) { |
| 1009 | /* set the direct/indirect flag */ |
| 1010 | xmctx->direct = direct; |
| 1011 | } |
| 1012 | return (GLXContext) xmctx; |
| 1013 | } |
| 1014 | |
| 1015 | |
| 1016 | static GLXDrawable MakeCurrent_PrevDrawable = 0; |
| 1017 | static GLXContext MakeCurrent_PrevContext = 0; |
| 1018 | static XMesaBuffer MakeCurrent_PrevBuffer = 0; |
| 1019 | |
| 1020 | Bool Fake_glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx ) |
| 1021 | { |
| 1022 | if (ctx && drawable) { |
| 1023 | XMesaBuffer buffer; |
| 1024 | |
| 1025 | if (drawable==MakeCurrent_PrevDrawable && ctx==MakeCurrent_PrevContext) { |
| 1026 | buffer = MakeCurrent_PrevBuffer; |
| 1027 | } |
| 1028 | else { |
| 1029 | buffer = XMesaFindBuffer( dpy, drawable ); |
| 1030 | } |
| 1031 | if (!buffer) { |
| 1032 | /* drawable must be a new window! */ |
| 1033 | buffer = XMesaCreateWindowBuffer2( ctx->xm_visual, drawable, ctx ); |
| 1034 | if (!buffer) { |
| 1035 | /* Out of memory, or context/drawable depth mismatch */ |
| 1036 | return False; |
| 1037 | } |
| 1038 | } |
| 1039 | MakeCurrent_PrevContext = ctx; |
| 1040 | MakeCurrent_PrevDrawable = drawable; |
| 1041 | MakeCurrent_PrevBuffer = buffer; |
| 1042 | |
| 1043 | /* Now make current! */ |
| 1044 | return (Bool) XMesaMakeCurrent( (XMesaContext) ctx, buffer ); |
| 1045 | } |
| 1046 | else if (!ctx && !drawable) { |
| 1047 | /* release current context w/out assigning new one. */ |
| 1048 | XMesaMakeCurrent( NULL, NULL ); |
| 1049 | MakeCurrent_PrevContext = 0; |
| 1050 | MakeCurrent_PrevDrawable = 0; |
| 1051 | MakeCurrent_PrevBuffer = 0; |
| 1052 | return True; |
| 1053 | } |
| 1054 | else { |
| 1055 | /* ctx XOR drawable is NULL, this is an error */ |
| 1056 | return False; |
| 1057 | } |
| 1058 | } |
| 1059 | |
| 1060 | |
| 1061 | |
| 1062 | GLXPixmap Fake_glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, |
| 1063 | Pixmap pixmap ) |
| 1064 | { |
| 1065 | XMesaVisual v; |
| 1066 | XMesaBuffer b; |
| 1067 | |
| 1068 | v = find_glx_visual( dpy, visinfo ); |
| 1069 | if (!v) { |
| 1070 | v = create_glx_visual( dpy, visinfo ); |
| 1071 | if (!v) { |
| 1072 | /* unusable visual */ |
| 1073 | return 0; |
| 1074 | } |
| 1075 | } |
| 1076 | |
| 1077 | b = XMesaCreatePixmapBuffer( v, pixmap, 0 ); |
| 1078 | if (!b) { |
| 1079 | return 0; |
| 1080 | } |
| 1081 | return b->frontbuffer; |
| 1082 | } |
| 1083 | |
| 1084 | |
| 1085 | #ifdef GLX_MESA_pixmap_colormap |
| 1086 | |
| 1087 | GLXPixmap Fake_glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo, |
| 1088 | Pixmap pixmap, Colormap cmap ) |
| 1089 | { |
| 1090 | XMesaVisual v; |
| 1091 | XMesaBuffer b; |
| 1092 | |
| 1093 | v = find_glx_visual( dpy, visinfo ); |
| 1094 | if (!v) { |
| 1095 | v = create_glx_visual( dpy, visinfo ); |
| 1096 | if (!v) { |
| 1097 | /* unusable visual */ |
| 1098 | return 0; |
| 1099 | } |
| 1100 | } |
| 1101 | |
| 1102 | b = XMesaCreatePixmapBuffer( v, pixmap, cmap ); |
| 1103 | if (!b) { |
| 1104 | return 0; |
| 1105 | } |
| 1106 | return b->frontbuffer; |
| 1107 | } |
| 1108 | |
| 1109 | #endif |
| 1110 | |
| 1111 | |
| 1112 | void Fake_glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap ) |
| 1113 | { |
| 1114 | XMesaBuffer b = XMesaFindBuffer(dpy, pixmap); |
| 1115 | if (b) { |
| 1116 | XMesaDestroyBuffer(b); |
| 1117 | } |
| 1118 | else if (getenv("MESA_DEBUG")) { |
| 1119 | fprintf( stderr, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n"); |
| 1120 | } |
| 1121 | } |
| 1122 | |
| 1123 | |
| 1124 | void Fake_glXCopyContext( Display *dpy, GLXContext src, GLXContext dst, |
| 1125 | GLuint mask ) |
| 1126 | { |
| 1127 | XMesaContext xm_src = (XMesaContext) src; |
| 1128 | XMesaContext xm_dst = (XMesaContext) dst; |
| 1129 | (void) dpy; |
| 1130 | gl_copy_context( xm_src->gl_ctx, xm_dst->gl_ctx, mask ); |
| 1131 | } |
| 1132 | |
| 1133 | |
| 1134 | |
| 1135 | Bool Fake_glXQueryExtension( Display *dpy, int *errorb, int *event ) |
| 1136 | { |
| 1137 | /* Mesa's GLX isn't really an X extension but we try to act like one. */ |
| 1138 | (void) dpy; |
| 1139 | (void) errorb; |
| 1140 | (void) event; |
| 1141 | return True; |
| 1142 | } |
| 1143 | |
| 1144 | |
| 1145 | void _kw_ungrab_all( Display *dpy ) |
| 1146 | { |
| 1147 | XUngrabPointer( dpy, CurrentTime ); |
| 1148 | XUngrabKeyboard( dpy, CurrentTime ); |
| 1149 | } |
| 1150 | |
| 1151 | |
| 1152 | void Fake_glXDestroyContext( Display *dpy, GLXContext ctx ) |
| 1153 | { |
| 1154 | (void) dpy; |
| 1155 | MakeCurrent_PrevContext = 0; |
| 1156 | MakeCurrent_PrevDrawable = 0; |
| 1157 | MakeCurrent_PrevBuffer = 0; |
| 1158 | XMesaDestroyContext( (XMesaContext) ctx ); |
| 1159 | XMesaGarbageCollect(); |
| 1160 | } |
| 1161 | |
| 1162 | |
| 1163 | |
| 1164 | Bool Fake_glXIsDirect( Display *dpy, GLXContext ctx ) |
| 1165 | { |
| 1166 | (void) dpy; |
| 1167 | return ((XMesaContext) ctx)->direct; |
| 1168 | } |
| 1169 | |
| 1170 | |
| 1171 | |
| 1172 | void Fake_glXSwapBuffers( Display *dpy, GLXDrawable drawable ) |
| 1173 | { |
| 1174 | XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable ); |
| 1175 | static GLXDrawable last = 0; |
| 1176 | static Window window = 0; |
| 1177 | if (drawable != last && 0) { |
| 1178 | XSetWindowAttributes cwa; |
| 1179 | |
| 1180 | _kw_ungrab_all( dpy ); |
| 1181 | cwa.override_redirect = 0; |
| 1182 | XChangeWindowAttributes( dpy, drawable, CWOverrideRedirect, |
| 1183 | &cwa ); |
| 1184 | /* printf("KW: Ungrab display %s\n", DisplayString(dpy)); */ |
| 1185 | |
| 1186 | |
| 1187 | /* last = drawable; */ |
| 1188 | |
| 1189 | |
| 1190 | if (!window) { |
| 1191 | XSetWindowAttributes cwa; |
| 1192 | |
| 1193 | if ((window = XCreateSimpleWindow( dpy, |
| 1194 | RootWindow( dpy, 0 ), |
| 1195 | 10,10,100,100, 0, |
| 1196 | WhitePixel( dpy, 0 ), |
| 1197 | BlackPixel( dpy, 0 ))) == 0) |
| 1198 | { |
| 1199 | printf("Failed to open radar window\n"); |
| 1200 | abort(); |
| 1201 | } |
| 1202 | |
| 1203 | cwa.event_mask = (PointerMotionMask | |
| 1204 | ButtonPressMask | |
| 1205 | ButtonReleaseMask | |
| 1206 | KeyPressMask | |
| 1207 | KeyReleaseMask | |
| 1208 | ExposureMask ); |
| 1209 | |
| 1210 | XChangeWindowAttributes( dpy, window, |
| 1211 | CWEventMask, |
| 1212 | &cwa ); |
| 1213 | |
| 1214 | XMapWindow( dpy, window ); |
| 1215 | XFlush( dpy ); |
| 1216 | } |
| 1217 | } |
| 1218 | if (buffer) { |
| 1219 | XMesaSwapBuffers(buffer); |
| 1220 | } |
| 1221 | else if (getenv("MESA_DEBUG")) { |
| 1222 | fprintf(stderr, "Mesa Warning: glXSwapBuffers: invalid drawable\n"); |
| 1223 | } |
| 1224 | } |
| 1225 | |
| 1226 | |
| 1227 | void Fake_glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable, |
| 1228 | int x, int y, int width, int height ) |
| 1229 | { |
| 1230 | XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable ); |
| 1231 | if (buffer) { |
| 1232 | XMesaCopySubBuffer(buffer, x, y, width, height); |
| 1233 | } |
| 1234 | else if (getenv("MESA_DEBUG")) { |
| 1235 | fprintf(stderr, "Mesa Warning: glXCopySubBufferMESA: invalid drawable\n"); |
| 1236 | } |
| 1237 | } |
| 1238 | |
| 1239 | |
| 1240 | |
| 1241 | Bool Fake_glXQueryVersion( Display *dpy, int *maj, int *min ) |
| 1242 | { |
| 1243 | (void) dpy; |
| 1244 | /* Return GLX version, not Mesa version */ |
| 1245 | *maj = 1; |
| 1246 | *min = 1; |
| 1247 | return True; |
| 1248 | } |
| 1249 | |
| 1250 | |
| 1251 | |
| 1252 | /* |
| 1253 | * Query the GLX attributes of the given XVisualInfo. |
| 1254 | */ |
| 1255 | int Fake_glXGetConfig( Display *dpy, XVisualInfo *visinfo, |
| 1256 | int attrib, int *value ) |
| 1257 | { |
| 1258 | XMesaVisual glxvis; |
| 1259 | |
| 1260 | glxvis = find_glx_visual( dpy, visinfo ); |
| 1261 | if (!glxvis) { |
| 1262 | /* this visual wasn't obtained with glXChooseVisual */ |
| 1263 | glxvis = create_glx_visual( dpy, visinfo ); |
| 1264 | if (!glxvis) { |
| 1265 | /* this visual can't be used for GL rendering */ |
| 1266 | if (attrib==GLX_USE_GL) { |
| 1267 | *value = (int) False; |
| 1268 | return 0; |
| 1269 | } |
| 1270 | else { |
| 1271 | /*fprintf( stderr, "Mesa: Error in glXGetConfig: bad visual\n");*/ |
| 1272 | return GLX_BAD_VISUAL; |
| 1273 | } |
| 1274 | } |
| 1275 | } |
| 1276 | |
| 1277 | switch(attrib) { |
| 1278 | case GLX_USE_GL: |
| 1279 | *value = (int) True; |
| 1280 | return 0; |
| 1281 | case GLX_BUFFER_SIZE: |
| 1282 | *value = visinfo->depth; |
| 1283 | return 0; |
| 1284 | case GLX_LEVEL: |
| 1285 | *value = glxvis->level; |
| 1286 | return 0; |
| 1287 | case GLX_RGBA: |
| 1288 | if (glxvis->gl_visual->RGBAflag) { |
| 1289 | *value = True; |
| 1290 | } |
| 1291 | else { |
| 1292 | *value = False; |
| 1293 | } |
| 1294 | return 0; |
| 1295 | case GLX_DOUBLEBUFFER: |
| 1296 | *value = (int) glxvis->gl_visual->DBflag; |
| 1297 | return 0; |
| 1298 | case GLX_STEREO: |
| 1299 | *value = (int) glxvis->gl_visual->StereoFlag; |
| 1300 | return 0; |
| 1301 | case GLX_AUX_BUFFERS: |
| 1302 | *value = (int) False; |
| 1303 | return 0; |
| 1304 | case GLX_RED_SIZE: |
| 1305 | *value = glxvis->gl_visual->RedBits; |
| 1306 | return 0; |
| 1307 | case GLX_GREEN_SIZE: |
| 1308 | *value = glxvis->gl_visual->GreenBits; |
| 1309 | return 0; |
| 1310 | case GLX_BLUE_SIZE: |
| 1311 | *value = glxvis->gl_visual->BlueBits; |
| 1312 | return 0; |
| 1313 | case GLX_ALPHA_SIZE: |
| 1314 | *value = glxvis->gl_visual->AlphaBits; |
| 1315 | return 0; |
| 1316 | case GLX_DEPTH_SIZE: |
| 1317 | *value = glxvis->gl_visual->DepthBits; |
| 1318 | return 0; |
| 1319 | case GLX_STENCIL_SIZE: |
| 1320 | *value = glxvis->gl_visual->StencilBits; |
| 1321 | return 0; |
| 1322 | case GLX_ACCUM_RED_SIZE: |
| 1323 | case GLX_ACCUM_GREEN_SIZE: |
| 1324 | case GLX_ACCUM_BLUE_SIZE: |
| 1325 | *value = glxvis->gl_visual->AccumBits; |
| 1326 | return 0; |
| 1327 | case GLX_ACCUM_ALPHA_SIZE: |
| 1328 | if (glxvis->gl_visual->AlphaBits > 0) |
| 1329 | *value = glxvis->gl_visual->AccumBits; |
| 1330 | else |
| 1331 | *value = 0; |
| 1332 | return 0; |
| 1333 | |
| 1334 | /* |
| 1335 | * GLX_EXT_visual_info extension |
| 1336 | */ |
| 1337 | case GLX_X_VISUAL_TYPE_EXT: |
| 1338 | switch (glxvis->visinfo->CLASS) { |
| 1339 | case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0; |
| 1340 | case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0; |
| 1341 | case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0; |
| 1342 | case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0; |
| 1343 | case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0; |
| 1344 | case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0; |
| 1345 | } |
| 1346 | return 0; |
| 1347 | case GLX_TRANSPARENT_TYPE_EXT: |
| 1348 | if (glxvis->level==0) { |
| 1349 | /* normal planes */ |
| 1350 | *value = GLX_NONE_EXT; |
| 1351 | } |
| 1352 | else if (glxvis->level>0) { |
| 1353 | /* overlay */ |
| 1354 | if (glxvis->gl_visual->RGBAflag) { |
| 1355 | *value = GLX_TRANSPARENT_RGB_EXT; |
| 1356 | } |
| 1357 | else { |
| 1358 | *value = GLX_TRANSPARENT_INDEX_EXT; |
| 1359 | } |
| 1360 | } |
| 1361 | else if (glxvis->level<0) { |
| 1362 | /* underlay */ |
| 1363 | *value = GLX_NONE_EXT; |
| 1364 | } |
| 1365 | return 0; |
| 1366 | case GLX_TRANSPARENT_INDEX_VALUE_EXT: |
| 1367 | { |
| 1368 | int pixel = transparent_pixel( glxvis ); |
| 1369 | if (pixel>=0) { |
| 1370 | *value = pixel; |
| 1371 | } |
| 1372 | /* else undefined */ |
| 1373 | } |
| 1374 | return 0; |
| 1375 | case GLX_TRANSPARENT_RED_VALUE_EXT: |
| 1376 | /* undefined */ |
| 1377 | return 0; |
| 1378 | case GLX_TRANSPARENT_GREEN_VALUE_EXT: |
| 1379 | /* undefined */ |
| 1380 | return 0; |
| 1381 | case GLX_TRANSPARENT_BLUE_VALUE_EXT: |
| 1382 | /* undefined */ |
| 1383 | return 0; |
| 1384 | case GLX_TRANSPARENT_ALPHA_VALUE_EXT: |
| 1385 | /* undefined */ |
| 1386 | return 0; |
| 1387 | |
| 1388 | /* |
| 1389 | * Extensions |
| 1390 | */ |
| 1391 | default: |
| 1392 | return GLX_BAD_ATTRIBUTE; |
| 1393 | } |
| 1394 | } |
| 1395 | |
| 1396 | |
| 1397 | |
| 1398 | GLXContext Fake_glXGetCurrentContext( void ) |
| 1399 | { |
| 1400 | return (GLXContext) XMesaGetCurrentContext(); |
| 1401 | } |
| 1402 | |
| 1403 | |
| 1404 | |
| 1405 | GLXDrawable Fake_glXGetCurrentDrawable( void ) |
| 1406 | { |
| 1407 | XMesaBuffer b = XMesaGetCurrentBuffer(); |
| 1408 | if (b) { |
| 1409 | return b->frontbuffer; |
| 1410 | } |
| 1411 | else { |
| 1412 | return 0; |
| 1413 | } |
| 1414 | } |
| 1415 | |
| 1416 | |
| 1417 | void Fake_glXWaitGL( void ) |
| 1418 | { |
| 1419 | XMesaContext xmesa = XMesaGetCurrentContext(); |
| 1420 | XMesaFlush( xmesa ); |
| 1421 | } |
| 1422 | |
| 1423 | |
| 1424 | |
| 1425 | void Fake_glXWaitX( void ) |
| 1426 | { |
| 1427 | XMesaContext xmesa = XMesaGetCurrentContext(); |
| 1428 | XMesaFlush( xmesa ); |
| 1429 | } |
| 1430 | |
| 1431 | |
| 1432 | |
| 1433 | #define EXTENSIONS "GLX_MESA_pixmap_colormap GLX_EXT_visual_info GLX_MESA_release_buffers GLX_MESA_copy_sub_buffer GLX_SGI_video_sync" |
| 1434 | |
| 1435 | |
| 1436 | /* GLX 1.1 and later */ |
| 1437 | const char *Fake_glXQueryExtensionsString( Display *dpy, int screen ) |
| 1438 | { |
| 1439 | static char *extensions = EXTENSIONS; |
| 1440 | (void) dpy; |
| 1441 | (void) screen; |
| 1442 | return extensions; |
| 1443 | } |
| 1444 | |
| 1445 | |
| 1446 | |
| 1447 | /* GLX 1.1 and later */ |
| 1448 | const char *Fake_glXQueryServerString( Display *dpy, int screen, int name ) |
| 1449 | { |
| 1450 | static char *extensions = EXTENSIONS; |
| 1451 | static char *vendor = "Brian Paul"; |
| 1452 | static char *version = "1.1 Mesa 3.0"; |
| 1453 | |
| 1454 | (void) dpy; |
| 1455 | (void) screen; |
| 1456 | |
| 1457 | switch (name) { |
| 1458 | case GLX_EXTENSIONS: |
| 1459 | return extensions; |
| 1460 | case GLX_VENDOR: |
| 1461 | return vendor; |
| 1462 | case GLX_VERSION: |
| 1463 | return version; |
| 1464 | default: |
| 1465 | return NULL; |
| 1466 | } |
| 1467 | } |
| 1468 | |
| 1469 | |
| 1470 | |
| 1471 | /* GLX 1.1 and later */ |
| 1472 | const char *Fake_glXGetClientString( Display *dpy, int name ) |
| 1473 | { |
| 1474 | static char *extensions = EXTENSIONS; |
| 1475 | static char *vendor = "Brian Paul"; |
| 1476 | static char *version = "1.1 Mesa 3.0"; |
| 1477 | |
| 1478 | (void) dpy; |
| 1479 | |
| 1480 | switch (name) { |
| 1481 | case GLX_EXTENSIONS: |
| 1482 | return extensions; |
| 1483 | case GLX_VENDOR: |
| 1484 | return vendor; |
| 1485 | case GLX_VERSION: |
| 1486 | return version; |
| 1487 | default: |
| 1488 | return NULL; |
| 1489 | } |
| 1490 | } |
| 1491 | |
| 1492 | |
| 1493 | |
| 1494 | /* |
| 1495 | * Release the depth, stencil, accum buffers attached to a GLXDrawable |
| 1496 | * (a window or pixmap) prior to destroying the GLXDrawable. |
| 1497 | */ |
| 1498 | Bool Fake_glXReleaseBuffersMESA( Display *dpy, GLXDrawable d ) |
| 1499 | { |
| 1500 | XMesaBuffer b = XMesaFindBuffer(dpy, d); |
| 1501 | if (b) { |
| 1502 | XMesaDestroyBuffer(b); |
| 1503 | return True; |
| 1504 | } |
| 1505 | return False; |
| 1506 | } |
| 1507 | |
| 1508 | |
| 1509 | /* Silence compiler warnings */ |
| 1510 | void Fake_glXDummyFunc( void ) |
| 1511 | { |
| 1512 | (void) kernel8; |
| 1513 | (void) DitherValues; |
| 1514 | (void) HPCR_DRGB; |
| 1515 | (void) kernel1; |
| 1516 | } |