xm_api.c revision 8126dfa9c24c972794193bf652d6d09a1d01b376
1/* 2 * Mesa 3-D graphics library 3 * Version: 7.1 4 * 5 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included 15 * in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25/** 26 * \file xm_api.c 27 * 28 * All the XMesa* API functions. 29 * 30 * 31 * NOTES: 32 * 33 * The window coordinate system origin (0,0) is in the lower-left corner 34 * of the window. X11's window coordinate origin is in the upper-left 35 * corner of the window. Therefore, most drawing functions in this 36 * file have to flip Y coordinates. 37 * 38 * Define USE_XSHM in the Makefile with -DUSE_XSHM if you want to compile 39 * in support for the MIT Shared Memory extension. If enabled, when you 40 * use an Ximage for the back buffer in double buffered mode, the "swap" 41 * operation will be faster. You must also link with -lXext. 42 * 43 * Byte swapping: If the Mesa host and the X display use a different 44 * byte order then there's some trickiness to be aware of when using 45 * XImages. The byte ordering used for the XImage is that of the X 46 * display, not the Mesa host. 47 * The color-to-pixel encoding for True/DirectColor must be done 48 * according to the display's visual red_mask, green_mask, and blue_mask. 49 * If XPutPixel is used to put a pixel into an XImage then XPutPixel will 50 * do byte swapping if needed. If one wants to directly "poke" the pixel 51 * into the XImage's buffer then the pixel must be byte swapped first. In 52 * Mesa, when byte swapping is needed we use the PF_TRUECOLOR pixel format 53 * and use XPutPixel everywhere except in the implementation of 54 * glClear(GL_COLOR_BUFFER_BIT). We want this function to be fast so 55 * instead of using XPutPixel we "poke" our values after byte-swapping 56 * the clear pixel value if needed. 57 * 58 */ 59 60#ifdef __CYGWIN__ 61#undef WIN32 62#undef __WIN32__ 63#endif 64 65#include "glxheader.h" 66#include "xmesaP.h" 67#include "main/context.h" 68#include "main/extensions.h" 69#include "main/framebuffer.h" 70#include "main/imports.h" 71#include "main/macros.h" 72#include "main/renderbuffer.h" 73#include "main/teximage.h" 74#include "glapi/glthread.h" 75#include "swrast/swrast.h" 76#include "swrast_setup/swrast_setup.h" 77#include "vbo/vbo.h" 78#include "tnl/tnl.h" 79#include "tnl/t_context.h" 80#include "tnl/t_pipeline.h" 81#include "drivers/common/driverfuncs.h" 82#include "drivers/common/meta.h" 83 84/** 85 * Global X driver lock 86 */ 87_glthread_Mutex _xmesa_lock; 88 89 90 91/** 92 * Lookup tables for HPCR pixel format: 93 */ 94static short hpcr_rgbTbl[3][256] = { 95{ 96 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 23, 97 24, 24, 25, 25, 26, 26, 27, 27, 28, 28, 29, 29, 30, 30, 31, 31, 98 32, 32, 33, 33, 34, 34, 35, 35, 36, 36, 37, 37, 38, 38, 39, 39, 99 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 100 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 101 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 102 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 103 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 104112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 105128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 106144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 107160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 108176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 109192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 110208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 111224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239 112}, 113{ 114 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 23, 115 24, 24, 25, 25, 26, 26, 27, 27, 28, 28, 29, 29, 30, 30, 31, 31, 116 32, 32, 33, 33, 34, 34, 35, 35, 36, 36, 37, 37, 38, 38, 39, 39, 117 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 118 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 119 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 120 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 121 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 122112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 123128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 124144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 125160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 126176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 127192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 128208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 129224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239 130}, 131{ 132 32, 32, 33, 33, 34, 34, 35, 35, 36, 36, 37, 37, 38, 38, 39, 39, 133 40, 40, 41, 41, 42, 42, 43, 43, 44, 44, 45, 45, 46, 46, 47, 47, 134 48, 48, 49, 49, 50, 50, 51, 51, 52, 52, 53, 53, 54, 54, 55, 55, 135 56, 56, 57, 57, 58, 58, 59, 59, 60, 60, 61, 61, 62, 62, 63, 63, 136 64, 64, 65, 65, 66, 66, 67, 67, 68, 68, 69, 69, 70, 70, 71, 71, 137 72, 72, 73, 73, 74, 74, 75, 75, 76, 76, 77, 77, 78, 78, 79, 79, 138 80, 80, 81, 81, 82, 82, 83, 83, 84, 84, 85, 85, 86, 86, 87, 87, 139 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 140 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 141112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 142128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 143144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 144160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 145176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 146192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 147208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223 148} 149}; 150 151 152 153/**********************************************************************/ 154/***** X Utility Functions *****/ 155/**********************************************************************/ 156 157 158/** 159 * Return the host's byte order as LSBFirst or MSBFirst ala X. 160 */ 161#ifndef XFree86Server 162static int host_byte_order( void ) 163{ 164 int i = 1; 165 char *cptr = (char *) &i; 166 return (*cptr==1) ? LSBFirst : MSBFirst; 167} 168#endif 169 170 171/** 172 * Check if the X Shared Memory extension is available. 173 * Return: 0 = not available 174 * 1 = shared XImage support available 175 * 2 = shared Pixmap support available also 176 */ 177static int check_for_xshm( XMesaDisplay *display ) 178{ 179#if defined(USE_XSHM) && !defined(XFree86Server) 180 int major, minor, ignore; 181 Bool pixmaps; 182 183 if (XQueryExtension( display, "MIT-SHM", &ignore, &ignore, &ignore )) { 184 if (XShmQueryVersion( display, &major, &minor, &pixmaps )==True) { 185 return (pixmaps==True) ? 2 : 1; 186 } 187 else { 188 return 0; 189 } 190 } 191 else { 192 return 0; 193 } 194#else 195 /* No XSHM support */ 196 return 0; 197#endif 198} 199 200 201/** 202 * Apply gamma correction to an intensity value in [0..max]. Return the 203 * new intensity value. 204 */ 205static GLint 206gamma_adjust( GLfloat gamma, GLint value, GLint max ) 207{ 208 if (gamma == 1.0) { 209 return value; 210 } 211 else { 212 double x = (double) value / (double) max; 213 return IROUND_POS((GLfloat) max * _mesa_pow(x, 1.0F/gamma)); 214 } 215} 216 217 218 219/** 220 * Return the true number of bits per pixel for XImages. 221 * For example, if we request a 24-bit deep visual we may actually need/get 222 * 32bpp XImages. This function returns the appropriate bpp. 223 * Input: dpy - the X display 224 * visinfo - desribes the visual to be used for XImages 225 * Return: true number of bits per pixel for XImages 226 */ 227static int 228bits_per_pixel( XMesaVisual xmv ) 229{ 230#ifdef XFree86Server 231 const int depth = xmv->nplanes; 232 int i; 233 assert(depth > 0); 234 for (i = 0; i < screenInfo.numPixmapFormats; i++) { 235 if (screenInfo.formats[i].depth == depth) 236 return screenInfo.formats[i].bitsPerPixel; 237 } 238 return depth; /* should never get here, but this should be safe */ 239#else 240 XMesaDisplay *dpy = xmv->display; 241 XMesaVisualInfo visinfo = xmv->visinfo; 242 XMesaImage *img; 243 int bitsPerPixel; 244 /* Create a temporary XImage */ 245 img = XCreateImage( dpy, visinfo->visual, visinfo->depth, 246 ZPixmap, 0, /*format, offset*/ 247 (char*) MALLOC(8), /*data*/ 248 1, 1, /*width, height*/ 249 32, /*bitmap_pad*/ 250 0 /*bytes_per_line*/ 251 ); 252 assert(img); 253 /* grab the bits/pixel value */ 254 bitsPerPixel = img->bits_per_pixel; 255 /* free the XImage */ 256 _mesa_free( img->data ); 257 img->data = NULL; 258 XMesaDestroyImage( img ); 259 return bitsPerPixel; 260#endif 261} 262 263 264 265/* 266 * Determine if a given X window ID is valid (window exists). 267 * Do this by calling XGetWindowAttributes() for the window and 268 * checking if we catch an X error. 269 * Input: dpy - the display 270 * win - the window to check for existance 271 * Return: GL_TRUE - window exists 272 * GL_FALSE - window doesn't exist 273 */ 274#ifndef XFree86Server 275static GLboolean WindowExistsFlag; 276 277static int window_exists_err_handler( XMesaDisplay* dpy, XErrorEvent* xerr ) 278{ 279 (void) dpy; 280 if (xerr->error_code == BadWindow) { 281 WindowExistsFlag = GL_FALSE; 282 } 283 return 0; 284} 285 286static GLboolean window_exists( XMesaDisplay *dpy, Window win ) 287{ 288 XWindowAttributes wa; 289 int (*old_handler)( XMesaDisplay*, XErrorEvent* ); 290 WindowExistsFlag = GL_TRUE; 291 old_handler = XSetErrorHandler(window_exists_err_handler); 292 XGetWindowAttributes( dpy, win, &wa ); /* dummy request */ 293 XSetErrorHandler(old_handler); 294 return WindowExistsFlag; 295} 296 297static Status 298get_drawable_size( XMesaDisplay *dpy, Drawable d, GLuint *width, GLuint *height ) 299{ 300 Window root; 301 Status stat; 302 int xpos, ypos; 303 unsigned int w, h, bw, depth; 304 stat = XGetGeometry(dpy, d, &root, &xpos, &ypos, &w, &h, &bw, &depth); 305 *width = w; 306 *height = h; 307 return stat; 308} 309#endif 310 311 312/** 313 * Return the size of the window (or pixmap) that corresponds to the 314 * given XMesaBuffer. 315 * \param width returns width in pixels 316 * \param height returns height in pixels 317 */ 318void 319xmesa_get_window_size(XMesaDisplay *dpy, XMesaBuffer b, 320 GLuint *width, GLuint *height) 321{ 322#ifdef XFree86Server 323 *width = MIN2(b->frontxrb->drawable->width, MAX_WIDTH); 324 *height = MIN2(b->frontxrb->drawable->height, MAX_HEIGHT); 325#else 326 Status stat; 327 328 _glthread_LOCK_MUTEX(_xmesa_lock); 329 XSync(b->xm_visual->display, 0); /* added for Chromium */ 330 stat = get_drawable_size(dpy, b->frontxrb->pixmap, width, height); 331 _glthread_UNLOCK_MUTEX(_xmesa_lock); 332 333 if (!stat) { 334 /* probably querying a window that's recently been destroyed */ 335 _mesa_warning(NULL, "XGetGeometry failed!\n"); 336 *width = *height = 1; 337 } 338#endif 339} 340 341 342 343/**********************************************************************/ 344/***** Linked list of XMesaBuffers *****/ 345/**********************************************************************/ 346 347XMesaBuffer XMesaBufferList = NULL; 348 349 350/** 351 * Allocate a new XMesaBuffer object which corresponds to the given drawable. 352 * Note that XMesaBuffer is derived from GLframebuffer. 353 * The new XMesaBuffer will not have any size (Width=Height=0). 354 * 355 * \param d the corresponding X drawable (window or pixmap) 356 * \param type either WINDOW, PIXMAP or PBUFFER, describing d 357 * \param vis the buffer's visual 358 * \param cmap the window's colormap, if known. 359 * \return new XMesaBuffer or NULL if any problem 360 */ 361static XMesaBuffer 362create_xmesa_buffer(XMesaDrawable d, BufferType type, 363 XMesaVisual vis, XMesaColormap cmap) 364{ 365 XMesaBuffer b; 366 367 ASSERT(type == WINDOW || type == PIXMAP || type == PBUFFER); 368 369 b = (XMesaBuffer) CALLOC_STRUCT(xmesa_buffer); 370 if (!b) 371 return NULL; 372 373 b->display = vis->display; 374 b->xm_visual = vis; 375 b->type = type; 376 b->cmap = cmap; 377 378 _mesa_initialize_framebuffer(&b->mesa_buffer, &vis->mesa_visual); 379 b->mesa_buffer.Delete = xmesa_delete_framebuffer; 380 381 /* 382 * Front renderbuffer 383 */ 384 b->frontxrb = xmesa_new_renderbuffer(NULL, 0, &vis->mesa_visual, GL_FALSE); 385 if (!b->frontxrb) { 386 _mesa_free(b); 387 return NULL; 388 } 389 b->frontxrb->Parent = b; 390 b->frontxrb->drawable = d; 391 b->frontxrb->pixmap = (XMesaPixmap) d; 392 _mesa_add_renderbuffer(&b->mesa_buffer, BUFFER_FRONT_LEFT, 393 &b->frontxrb->Base); 394 395 /* 396 * Back renderbuffer 397 */ 398 if (vis->mesa_visual.doubleBufferMode) { 399 b->backxrb = xmesa_new_renderbuffer(NULL, 0, &vis->mesa_visual, GL_TRUE); 400 if (!b->backxrb) { 401 /* XXX free front xrb too */ 402 _mesa_free(b); 403 return NULL; 404 } 405 b->backxrb->Parent = b; 406 /* determine back buffer implementation */ 407 b->db_mode = vis->ximage_flag ? BACK_XIMAGE : BACK_PIXMAP; 408 409 _mesa_add_renderbuffer(&b->mesa_buffer, BUFFER_BACK_LEFT, 410 &b->backxrb->Base); 411 } 412 413 /* 414 * Software alpha planes 415 */ 416 if (vis->mesa_visual.alphaBits > 0 417 && vis->undithered_pf != PF_8A8B8G8R 418 && vis->undithered_pf != PF_8A8R8G8B) { 419 /* Visual has alpha, but pixel format doesn't support it. 420 * We'll use an alpha renderbuffer wrapper. 421 */ 422 b->swAlpha = GL_TRUE; 423 } 424 else { 425 b->swAlpha = GL_FALSE; 426 } 427 428 /* 429 * Other renderbuffer (depth, stencil, etc) 430 */ 431 _mesa_add_soft_renderbuffers(&b->mesa_buffer, 432 GL_FALSE, /* color */ 433 vis->mesa_visual.haveDepthBuffer, 434 vis->mesa_visual.haveStencilBuffer, 435 vis->mesa_visual.haveAccumBuffer, 436 b->swAlpha, 437 vis->mesa_visual.numAuxBuffers > 0 ); 438 439 /* GLX_EXT_texture_from_pixmap */ 440 b->TextureTarget = 0; 441 b->TextureFormat = GLX_TEXTURE_FORMAT_NONE_EXT; 442 b->TextureMipmap = 0; 443 444 /* insert buffer into linked list */ 445 b->Next = XMesaBufferList; 446 XMesaBufferList = b; 447 448 return b; 449} 450 451 452/** 453 * Find an XMesaBuffer by matching X display and colormap but NOT matching 454 * the notThis buffer. 455 */ 456XMesaBuffer 457xmesa_find_buffer(XMesaDisplay *dpy, XMesaColormap cmap, XMesaBuffer notThis) 458{ 459 XMesaBuffer b; 460 for (b=XMesaBufferList; b; b=b->Next) { 461 if (b->display==dpy && b->cmap==cmap && b!=notThis) { 462 return b; 463 } 464 } 465 return NULL; 466} 467 468 469/** 470 * Remove buffer from linked list, delete if no longer referenced. 471 */ 472static void 473xmesa_free_buffer(XMesaBuffer buffer) 474{ 475 XMesaBuffer prev = NULL, b; 476 477 for (b = XMesaBufferList; b; b = b->Next) { 478 if (b == buffer) { 479 struct gl_framebuffer *fb = &buffer->mesa_buffer; 480 481 /* unlink buffer from list */ 482 if (prev) 483 prev->Next = buffer->Next; 484 else 485 XMesaBufferList = buffer->Next; 486 487 /* mark as delete pending */ 488 fb->DeletePending = GL_TRUE; 489 490 /* Since the X window for the XMesaBuffer is going away, we don't 491 * want to dereference this pointer in the future. 492 */ 493 b->frontxrb->drawable = 0; 494 495 /* Unreference. If count = zero we'll really delete the buffer */ 496 _mesa_reference_framebuffer(&fb, NULL); 497 498 return; 499 } 500 /* continue search */ 501 prev = b; 502 } 503 /* buffer not found in XMesaBufferList */ 504 _mesa_problem(NULL,"xmesa_free_buffer() - buffer not found\n"); 505} 506 507 508/** 509 * Copy X color table stuff from one XMesaBuffer to another. 510 */ 511static void 512copy_colortable_info(XMesaBuffer dst, const XMesaBuffer src) 513{ 514 MEMCPY(dst->color_table, src->color_table, sizeof(src->color_table)); 515 MEMCPY(dst->pixel_to_r, src->pixel_to_r, sizeof(src->pixel_to_r)); 516 MEMCPY(dst->pixel_to_g, src->pixel_to_g, sizeof(src->pixel_to_g)); 517 MEMCPY(dst->pixel_to_b, src->pixel_to_b, sizeof(src->pixel_to_b)); 518 dst->num_alloced = src->num_alloced; 519 MEMCPY(dst->alloced_colors, src->alloced_colors, 520 sizeof(src->alloced_colors)); 521} 522 523 524 525/**********************************************************************/ 526/***** Misc Private Functions *****/ 527/**********************************************************************/ 528 529 530/** 531 * A replacement for XAllocColor. This function should never 532 * fail to allocate a color. When XAllocColor fails, we return 533 * the nearest matching color. If we have to allocate many colors 534 * this function isn't too efficient; the XQueryColors() could be 535 * done just once. 536 * Written by Michael Pichler, Brian Paul, Mark Kilgard 537 * Input: dpy - X display 538 * cmap - X colormap 539 * cmapSize - size of colormap 540 * In/Out: color - the XColor struct 541 * Output: exact - 1=exact color match, 0=closest match 542 * alloced - 1=XAlloc worked, 0=XAlloc failed 543 */ 544static void 545noFaultXAllocColor( int client, 546 XMesaDisplay *dpy, 547 XMesaColormap cmap, 548 int cmapSize, 549 XMesaColor *color, 550 int *exact, int *alloced ) 551{ 552#ifdef XFree86Server 553 Pixel *ppixIn; 554 xrgb *ctable; 555#else 556 /* we'll try to cache ctable for better remote display performance */ 557 static Display *prevDisplay = NULL; 558 static XMesaColormap prevCmap = 0; 559 static int prevCmapSize = 0; 560 static XMesaColor *ctable = NULL; 561#endif 562 XMesaColor subColor; 563 int i, bestmatch; 564 double mindist; /* 3*2^16^2 exceeds long int precision. */ 565 566 (void) client; 567 568 /* First try just using XAllocColor. */ 569#ifdef XFree86Server 570 if (AllocColor(cmap, 571 &color->red, &color->green, &color->blue, 572 &color->pixel, 573 client) == Success) 574#else 575 if (XAllocColor(dpy, cmap, color)) 576#endif 577 { 578 *exact = 1; 579 *alloced = 1; 580 return; 581 } 582 583 /* Alloc failed, search for closest match */ 584 585 /* Retrieve color table entries. */ 586 /* XXX alloca candidate. */ 587#ifdef XFree86Server 588 ppixIn = (Pixel *) MALLOC(cmapSize * sizeof(Pixel)); 589 ctable = (xrgb *) MALLOC(cmapSize * sizeof(xrgb)); 590 for (i = 0; i < cmapSize; i++) { 591 ppixIn[i] = i; 592 } 593 QueryColors(cmap, cmapSize, ppixIn, ctable); 594#else 595 if (prevDisplay != dpy || prevCmap != cmap 596 || prevCmapSize != cmapSize || !ctable) { 597 /* free previously cached color table */ 598 if (ctable) 599 _mesa_free(ctable); 600 /* Get the color table from X */ 601 ctable = (XMesaColor *) MALLOC(cmapSize * sizeof(XMesaColor)); 602 assert(ctable); 603 for (i = 0; i < cmapSize; i++) { 604 ctable[i].pixel = i; 605 } 606 XQueryColors(dpy, cmap, ctable, cmapSize); 607 prevDisplay = dpy; 608 prevCmap = cmap; 609 prevCmapSize = cmapSize; 610 } 611#endif 612 613 /* Find best match. */ 614 bestmatch = -1; 615 mindist = 0.0; 616 for (i = 0; i < cmapSize; i++) { 617 double dr = 0.30 * ((double) color->red - (double) ctable[i].red); 618 double dg = 0.59 * ((double) color->green - (double) ctable[i].green); 619 double db = 0.11 * ((double) color->blue - (double) ctable[i].blue); 620 double dist = dr * dr + dg * dg + db * db; 621 if (bestmatch < 0 || dist < mindist) { 622 bestmatch = i; 623 mindist = dist; 624 } 625 } 626 627 /* Return result. */ 628 subColor.red = ctable[bestmatch].red; 629 subColor.green = ctable[bestmatch].green; 630 subColor.blue = ctable[bestmatch].blue; 631 /* Try to allocate the closest match color. This should only 632 * fail if the cell is read/write. Otherwise, we're incrementing 633 * the cell's reference count. 634 */ 635#ifdef XFree86Server 636 if (AllocColor(cmap, 637 &subColor.red, &subColor.green, &subColor.blue, 638 &subColor.pixel, 639 client) == Success) { 640#else 641 if (XAllocColor(dpy, cmap, &subColor)) { 642#endif 643 *alloced = 1; 644 } 645 else { 646 /* do this to work around a problem reported by Frank Ortega */ 647 subColor.pixel = (unsigned long) bestmatch; 648 subColor.red = ctable[bestmatch].red; 649 subColor.green = ctable[bestmatch].green; 650 subColor.blue = ctable[bestmatch].blue; 651 subColor.flags = DoRed | DoGreen | DoBlue; 652 *alloced = 0; 653 } 654#ifdef XFree86Server 655 _mesa_free(ppixIn); 656 _mesa_free(ctable); 657#else 658 /* don't free table, save it for next time */ 659#endif 660 661 *color = subColor; 662 *exact = 0; 663} 664 665 666 667/** 668 * Do setup for PF_GRAYSCALE pixel format. 669 * Note that buffer may be NULL. 670 */ 671static GLboolean 672setup_grayscale(int client, XMesaVisual v, 673 XMesaBuffer buffer, XMesaColormap cmap) 674{ 675 if (GET_VISUAL_DEPTH(v)<4 || GET_VISUAL_DEPTH(v)>16) { 676 return GL_FALSE; 677 } 678 679 if (buffer) { 680 XMesaBuffer prevBuffer; 681 682 if (!cmap) { 683 return GL_FALSE; 684 } 685 686 prevBuffer = xmesa_find_buffer(v->display, cmap, buffer); 687 if (prevBuffer && 688 (buffer->xm_visual->mesa_visual.rgbMode == 689 prevBuffer->xm_visual->mesa_visual.rgbMode)) { 690 /* Copy colormap stuff from previous XMesaBuffer which uses same 691 * X colormap. Do this to avoid time spent in noFaultXAllocColor. 692 */ 693 copy_colortable_info(buffer, prevBuffer); 694 } 695 else { 696 /* Allocate 256 shades of gray */ 697 int gray; 698 int colorsfailed = 0; 699 for (gray=0;gray<256;gray++) { 700 GLint r = gamma_adjust( v->RedGamma, gray, 255 ); 701 GLint g = gamma_adjust( v->GreenGamma, gray, 255 ); 702 GLint b = gamma_adjust( v->BlueGamma, gray, 255 ); 703 int exact, alloced; 704 XMesaColor xcol; 705 xcol.red = (r << 8) | r; 706 xcol.green = (g << 8) | g; 707 xcol.blue = (b << 8) | b; 708 noFaultXAllocColor( client, v->display, 709 cmap, GET_COLORMAP_SIZE(v), 710 &xcol, &exact, &alloced ); 711 if (!exact) { 712 colorsfailed++; 713 } 714 if (alloced) { 715 assert(buffer->num_alloced<256); 716 buffer->alloced_colors[buffer->num_alloced] = xcol.pixel; 717 buffer->num_alloced++; 718 } 719 720 /*OLD 721 assert(gray < 576); 722 buffer->color_table[gray*3+0] = xcol.pixel; 723 buffer->color_table[gray*3+1] = xcol.pixel; 724 buffer->color_table[gray*3+2] = xcol.pixel; 725 assert(xcol.pixel < 65536); 726 buffer->pixel_to_r[xcol.pixel] = gray * 30 / 100; 727 buffer->pixel_to_g[xcol.pixel] = gray * 59 / 100; 728 buffer->pixel_to_b[xcol.pixel] = gray * 11 / 100; 729 */ 730 buffer->color_table[gray] = xcol.pixel; 731 assert(xcol.pixel < 65536); 732 buffer->pixel_to_r[xcol.pixel] = gray; 733 buffer->pixel_to_g[xcol.pixel] = gray; 734 buffer->pixel_to_b[xcol.pixel] = gray; 735 } 736 737 if (colorsfailed && _mesa_getenv("MESA_DEBUG")) { 738 _mesa_warning(NULL, 739 "Note: %d out of 256 needed colors do not match exactly.\n", 740 colorsfailed ); 741 } 742 } 743 } 744 745 v->dithered_pf = PF_Grayscale; 746 v->undithered_pf = PF_Grayscale; 747 return GL_TRUE; 748} 749 750 751 752/** 753 * Setup RGB rendering for a window with a PseudoColor, StaticColor, 754 * or 8-bit TrueColor visual visual. We try to allocate a palette of 225 755 * colors (5 red, 9 green, 5 blue) and dither to approximate a 24-bit RGB 756 * color. While this function was originally designed just for 8-bit 757 * visuals, it has also proven to work from 4-bit up to 16-bit visuals. 758 * Dithering code contributed by Bob Mercier. 759 */ 760static GLboolean 761setup_dithered_color(int client, XMesaVisual v, 762 XMesaBuffer buffer, XMesaColormap cmap) 763{ 764 if (GET_VISUAL_DEPTH(v)<4 || GET_VISUAL_DEPTH(v)>16) { 765 return GL_FALSE; 766 } 767 768 if (buffer) { 769 XMesaBuffer prevBuffer; 770 771 if (!cmap) { 772 return GL_FALSE; 773 } 774 775 prevBuffer = xmesa_find_buffer(v->display, cmap, buffer); 776 if (prevBuffer && 777 (buffer->xm_visual->mesa_visual.rgbMode == 778 prevBuffer->xm_visual->mesa_visual.rgbMode)) { 779 /* Copy colormap stuff from previous, matching XMesaBuffer. 780 * Do this to avoid time spent in noFaultXAllocColor. 781 */ 782 copy_colortable_info(buffer, prevBuffer); 783 } 784 else { 785 /* Allocate X colors and initialize color_table[], red_table[], etc */ 786 int r, g, b, i; 787 int colorsfailed = 0; 788 for (r = 0; r < DITH_R; r++) { 789 for (g = 0; g < DITH_G; g++) { 790 for (b = 0; b < DITH_B; b++) { 791 XMesaColor xcol; 792 int exact, alloced; 793 xcol.red =gamma_adjust(v->RedGamma, r*65535/(DITH_R-1),65535); 794 xcol.green=gamma_adjust(v->GreenGamma, g*65535/(DITH_G-1),65535); 795 xcol.blue =gamma_adjust(v->BlueGamma, b*65535/(DITH_B-1),65535); 796 noFaultXAllocColor( client, v->display, 797 cmap, GET_COLORMAP_SIZE(v), 798 &xcol, &exact, &alloced ); 799 if (!exact) { 800 colorsfailed++; 801 } 802 if (alloced) { 803 assert(buffer->num_alloced<256); 804 buffer->alloced_colors[buffer->num_alloced] = xcol.pixel; 805 buffer->num_alloced++; 806 } 807 i = DITH_MIX( r, g, b ); 808 assert(i < 576); 809 buffer->color_table[i] = xcol.pixel; 810 assert(xcol.pixel < 65536); 811 buffer->pixel_to_r[xcol.pixel] = r * 255 / (DITH_R-1); 812 buffer->pixel_to_g[xcol.pixel] = g * 255 / (DITH_G-1); 813 buffer->pixel_to_b[xcol.pixel] = b * 255 / (DITH_B-1); 814 } 815 } 816 } 817 818 if (colorsfailed && _mesa_getenv("MESA_DEBUG")) { 819 _mesa_warning(NULL, 820 "Note: %d out of %d needed colors do not match exactly.\n", 821 colorsfailed, DITH_R * DITH_G * DITH_B ); 822 } 823 } 824 } 825 826 v->dithered_pf = PF_Dither; 827 v->undithered_pf = PF_Lookup; 828 return GL_TRUE; 829} 830 831 832/** 833 * Setup for Hewlett Packard Color Recovery 8-bit TrueColor mode. 834 * HPCR simulates 24-bit color fidelity with an 8-bit frame buffer. 835 * Special dithering tables have to be initialized. 836 */ 837static void 838setup_8bit_hpcr(XMesaVisual v) 839{ 840 /* HP Color Recovery contributed by: Alex De Bruyn (ad@lms.be) 841 * To work properly, the atom _HP_RGB_SMOOTH_MAP_LIST must be defined 842 * on the root window AND the colormap obtainable by XGetRGBColormaps 843 * for that atom must be set on the window. (see also tkInitWindow) 844 * If that colormap is not set, the output will look stripy. 845 */ 846 847 /* Setup color tables with gamma correction */ 848 int i; 849 double g; 850 851 g = 1.0 / v->RedGamma; 852 for (i=0; i<256; i++) { 853 GLint red = IROUND_POS(255.0 * _mesa_pow( hpcr_rgbTbl[0][i]/255.0, g )); 854 v->hpcr_rgbTbl[0][i] = CLAMP( red, 16, 239 ); 855 } 856 857 g = 1.0 / v->GreenGamma; 858 for (i=0; i<256; i++) { 859 GLint green = IROUND_POS(255.0 * _mesa_pow( hpcr_rgbTbl[1][i]/255.0, g )); 860 v->hpcr_rgbTbl[1][i] = CLAMP( green, 16, 239 ); 861 } 862 863 g = 1.0 / v->BlueGamma; 864 for (i=0; i<256; i++) { 865 GLint blue = IROUND_POS(255.0 * _mesa_pow( hpcr_rgbTbl[2][i]/255.0, g )); 866 v->hpcr_rgbTbl[2][i] = CLAMP( blue, 32, 223 ); 867 } 868 v->undithered_pf = PF_HPCR; /* can't really disable dithering for now */ 869 v->dithered_pf = PF_HPCR; 870 871 /* which method should I use to clear */ 872 /* GL_FALSE: keep the ordinary method */ 873 /* GL_TRUE : clear with dither pattern */ 874 v->hpcr_clear_flag = _mesa_getenv("MESA_HPCR_CLEAR") ? GL_TRUE : GL_FALSE; 875 876 if (v->hpcr_clear_flag) { 877 v->hpcr_clear_pixmap = XMesaCreatePixmap(v->display, 878 DefaultRootWindow(v->display), 879 16, 2, 8); 880#ifndef XFree86Server 881 v->hpcr_clear_ximage = XGetImage(v->display, v->hpcr_clear_pixmap, 882 0, 0, 16, 2, AllPlanes, ZPixmap); 883#endif 884 } 885} 886 887 888/** 889 * Setup RGB rendering for a window with a True/DirectColor visual. 890 */ 891static void 892setup_truecolor(XMesaVisual v, XMesaBuffer buffer, XMesaColormap cmap) 893{ 894 unsigned long rmask, gmask, bmask; 895 (void) buffer; 896 (void) cmap; 897 898 /* Compute red multiplier (mask) and bit shift */ 899 v->rshift = 0; 900 rmask = GET_REDMASK(v); 901 while ((rmask & 1)==0) { 902 v->rshift++; 903 rmask = rmask >> 1; 904 } 905 906 /* Compute green multiplier (mask) and bit shift */ 907 v->gshift = 0; 908 gmask = GET_GREENMASK(v); 909 while ((gmask & 1)==0) { 910 v->gshift++; 911 gmask = gmask >> 1; 912 } 913 914 /* Compute blue multiplier (mask) and bit shift */ 915 v->bshift = 0; 916 bmask = GET_BLUEMASK(v); 917 while ((bmask & 1)==0) { 918 v->bshift++; 919 bmask = bmask >> 1; 920 } 921 922 /* 923 * Compute component-to-pixel lookup tables and dithering kernel 924 */ 925 { 926 static GLubyte kernel[16] = { 927 0*16, 8*16, 2*16, 10*16, 928 12*16, 4*16, 14*16, 6*16, 929 3*16, 11*16, 1*16, 9*16, 930 15*16, 7*16, 13*16, 5*16, 931 }; 932 GLint rBits = _mesa_bitcount(rmask); 933 GLint gBits = _mesa_bitcount(gmask); 934 GLint bBits = _mesa_bitcount(bmask); 935 GLint maxBits; 936 GLuint i; 937 938 /* convert pixel components in [0,_mask] to RGB values in [0,255] */ 939 for (i=0; i<=rmask; i++) 940 v->PixelToR[i] = (unsigned char) ((i * 255) / rmask); 941 for (i=0; i<=gmask; i++) 942 v->PixelToG[i] = (unsigned char) ((i * 255) / gmask); 943 for (i=0; i<=bmask; i++) 944 v->PixelToB[i] = (unsigned char) ((i * 255) / bmask); 945 946 /* convert RGB values from [0,255] to pixel components */ 947 948 for (i=0;i<256;i++) { 949 GLint r = gamma_adjust(v->RedGamma, i, 255); 950 GLint g = gamma_adjust(v->GreenGamma, i, 255); 951 GLint b = gamma_adjust(v->BlueGamma, i, 255); 952 v->RtoPixel[i] = (r >> (8-rBits)) << v->rshift; 953 v->GtoPixel[i] = (g >> (8-gBits)) << v->gshift; 954 v->BtoPixel[i] = (b >> (8-bBits)) << v->bshift; 955 } 956 /* overflow protection */ 957 for (i=256;i<512;i++) { 958 v->RtoPixel[i] = v->RtoPixel[255]; 959 v->GtoPixel[i] = v->GtoPixel[255]; 960 v->BtoPixel[i] = v->BtoPixel[255]; 961 } 962 963 /* setup dithering kernel */ 964 maxBits = rBits; 965 if (gBits > maxBits) maxBits = gBits; 966 if (bBits > maxBits) maxBits = bBits; 967 for (i=0;i<16;i++) { 968 v->Kernel[i] = kernel[i] >> maxBits; 969 } 970 971 v->undithered_pf = PF_Truecolor; 972 v->dithered_pf = (GET_VISUAL_DEPTH(v)<24) ? PF_Dither_True : PF_Truecolor; 973 } 974 975 /* 976 * Now check for TrueColor visuals which we can optimize. 977 */ 978 if ( GET_REDMASK(v) ==0x0000ff 979 && GET_GREENMASK(v)==0x00ff00 980 && GET_BLUEMASK(v) ==0xff0000 981 && CHECK_BYTE_ORDER(v) 982 && v->BitsPerPixel==32 983 && v->RedGamma==1.0 && v->GreenGamma==1.0 && v->BlueGamma==1.0) { 984 /* common 32 bpp config used on SGI, Sun */ 985 v->undithered_pf = v->dithered_pf = PF_8A8B8G8R; /* ABGR */ 986 } 987 else if (GET_REDMASK(v) == 0xff0000 988 && GET_GREENMASK(v)== 0x00ff00 989 && GET_BLUEMASK(v) == 0x0000ff 990 && CHECK_BYTE_ORDER(v) 991 && v->RedGamma == 1.0 && v->GreenGamma == 1.0 && v->BlueGamma == 1.0){ 992 if (v->BitsPerPixel==32) { 993 /* if 32 bpp, and visual indicates 8 bpp alpha channel */ 994 if (GET_VISUAL_DEPTH(v) == 32 && v->mesa_visual.alphaBits == 8) 995 v->undithered_pf = v->dithered_pf = PF_8A8R8G8B; /* ARGB */ 996 else 997 v->undithered_pf = v->dithered_pf = PF_8R8G8B; /* xRGB */ 998 } 999 else if (v->BitsPerPixel == 24) { 1000 v->undithered_pf = v->dithered_pf = PF_8R8G8B24; /* RGB */ 1001 } 1002 } 1003 else if (GET_REDMASK(v) ==0xf800 1004 && GET_GREENMASK(v)==0x07e0 1005 && GET_BLUEMASK(v) ==0x001f 1006 && CHECK_BYTE_ORDER(v) 1007 && v->BitsPerPixel==16 1008 && v->RedGamma==1.0 && v->GreenGamma==1.0 && v->BlueGamma==1.0) { 1009 /* 5-6-5 RGB */ 1010 v->undithered_pf = PF_5R6G5B; 1011 v->dithered_pf = PF_Dither_5R6G5B; 1012 } 1013 else if (GET_REDMASK(v) ==0xe0 1014 && GET_GREENMASK(v)==0x1c 1015 && GET_BLUEMASK(v) ==0x03 1016 && CHECK_FOR_HPCR(v)) { 1017 /* 8-bit HP color recovery */ 1018 setup_8bit_hpcr( v ); 1019 } 1020} 1021 1022 1023 1024/** 1025 * Setup RGB rendering for a window with a monochrome visual. 1026 */ 1027static void 1028setup_monochrome( XMesaVisual v, XMesaBuffer b ) 1029{ 1030 (void) b; 1031 v->dithered_pf = v->undithered_pf = PF_1Bit; 1032 /* if black=1 then we must flip pixel values */ 1033 v->bitFlip = (GET_BLACK_PIXEL(v) != 0); 1034} 1035 1036 1037 1038/** 1039 * When a context is bound for the first time, we can finally finish 1040 * initializing the context's visual and buffer information. 1041 * \param v the XMesaVisual to initialize 1042 * \param b the XMesaBuffer to initialize (may be NULL) 1043 * \param rgb_flag TRUE = RGBA mode, FALSE = color index mode 1044 * \param window the window/pixmap we're rendering into 1045 * \param cmap the colormap associated with the window/pixmap 1046 * \return GL_TRUE=success, GL_FALSE=failure 1047 */ 1048static GLboolean 1049initialize_visual_and_buffer(XMesaVisual v, XMesaBuffer b, 1050 GLboolean rgb_flag, XMesaDrawable window, 1051 XMesaColormap cmap) 1052{ 1053 int client = 0; 1054 1055#ifdef XFree86Server 1056 client = (window) ? CLIENT_ID(window->id) : 0; 1057#endif 1058 1059 ASSERT(!b || b->xm_visual == v); 1060 1061 /* Save true bits/pixel */ 1062 v->BitsPerPixel = bits_per_pixel(v); 1063 assert(v->BitsPerPixel > 0); 1064 1065 if (rgb_flag == GL_FALSE) { 1066 /* COLOR-INDEXED WINDOW: 1067 * Even if the visual is TrueColor or DirectColor we treat it as 1068 * being color indexed. This is weird but might be useful to someone. 1069 */ 1070 v->dithered_pf = v->undithered_pf = PF_Index; 1071 v->mesa_visual.indexBits = GET_VISUAL_DEPTH(v); 1072 } 1073 else { 1074 /* RGB WINDOW: 1075 * We support RGB rendering into almost any kind of visual. 1076 */ 1077 const int xclass = v->mesa_visual.visualType; 1078 if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) { 1079 setup_truecolor( v, b, cmap ); 1080 } 1081 else if (xclass == GLX_STATIC_GRAY && GET_VISUAL_DEPTH(v) == 1) { 1082 setup_monochrome( v, b ); 1083 } 1084 else if (xclass == GLX_GRAY_SCALE || xclass == GLX_STATIC_GRAY) { 1085 if (!setup_grayscale( client, v, b, cmap )) { 1086 return GL_FALSE; 1087 } 1088 } 1089 else if ((xclass == GLX_PSEUDO_COLOR || xclass == GLX_STATIC_COLOR) 1090 && GET_VISUAL_DEPTH(v)>=4 && GET_VISUAL_DEPTH(v)<=16) { 1091 if (!setup_dithered_color( client, v, b, cmap )) { 1092 return GL_FALSE; 1093 } 1094 } 1095 else { 1096 _mesa_warning(NULL, "XMesa: RGB mode rendering not supported in given visual.\n"); 1097 return GL_FALSE; 1098 } 1099 v->mesa_visual.indexBits = 0; 1100 1101 if (_mesa_getenv("MESA_NO_DITHER")) { 1102 v->dithered_pf = v->undithered_pf; 1103 } 1104 } 1105 1106 1107 /* 1108 * If MESA_INFO env var is set print out some debugging info 1109 * which can help Brian figure out what's going on when a user 1110 * reports bugs. 1111 */ 1112 if (_mesa_getenv("MESA_INFO")) { 1113 _mesa_printf("X/Mesa visual = %p\n", (void *) v); 1114 _mesa_printf("X/Mesa dithered pf = %u\n", v->dithered_pf); 1115 _mesa_printf("X/Mesa undithered pf = %u\n", v->undithered_pf); 1116 _mesa_printf("X/Mesa level = %d\n", v->mesa_visual.level); 1117 _mesa_printf("X/Mesa depth = %d\n", GET_VISUAL_DEPTH(v)); 1118 _mesa_printf("X/Mesa bits per pixel = %d\n", v->BitsPerPixel); 1119 } 1120 1121 if (b && window) { 1122 char *data; 1123 1124 /* Do window-specific initializations */ 1125 1126 /* these should have been set in create_xmesa_buffer */ 1127 ASSERT(b->frontxrb->drawable == window); 1128 ASSERT(b->frontxrb->pixmap == (XMesaPixmap) window); 1129 1130 /* Setup for single/double buffering */ 1131 if (v->mesa_visual.doubleBufferMode) { 1132 /* Double buffered */ 1133 b->shm = check_for_xshm( v->display ); 1134 } 1135 1136 /* X11 graphics contexts */ 1137#ifdef XFree86Server 1138 b->gc = CreateScratchGC(v->display, window->depth); 1139#else 1140 b->gc = XCreateGC( v->display, window, 0, NULL ); 1141#endif 1142 XMesaSetFunction( v->display, b->gc, GXcopy ); 1143 1144 /* cleargc - for glClear() */ 1145#ifdef XFree86Server 1146 b->cleargc = CreateScratchGC(v->display, window->depth); 1147#else 1148 b->cleargc = XCreateGC( v->display, window, 0, NULL ); 1149#endif 1150 XMesaSetFunction( v->display, b->cleargc, GXcopy ); 1151 1152 /* 1153 * Don't generate Graphics Expose/NoExpose events in swapbuffers(). 1154 * Patch contributed by Michael Pichler May 15, 1995. 1155 */ 1156#ifdef XFree86Server 1157 b->swapgc = CreateScratchGC(v->display, window->depth); 1158 { 1159 CARD32 v[1]; 1160 v[0] = FALSE; 1161 dixChangeGC(NullClient, b->swapgc, GCGraphicsExposures, v, NULL); 1162 } 1163#else 1164 { 1165 XGCValues gcvalues; 1166 gcvalues.graphics_exposures = False; 1167 b->swapgc = XCreateGC(v->display, window, 1168 GCGraphicsExposures, &gcvalues); 1169 } 1170#endif 1171 XMesaSetFunction( v->display, b->swapgc, GXcopy ); 1172 /* 1173 * Set fill style and tile pixmap once for all for HPCR stuff 1174 * (instead of doing it each time in clear_color_HPCR_pixmap()) 1175 * Initialize whole stuff 1176 * Patch contributed by Jacques Leroy March 8, 1998. 1177 */ 1178 if (v->hpcr_clear_flag && b->backxrb && b->backxrb->pixmap) { 1179 int i; 1180 for (i = 0; i < 16; i++) { 1181 XMesaPutPixel(v->hpcr_clear_ximage, i, 0, 0); 1182 XMesaPutPixel(v->hpcr_clear_ximage, i, 1, 0); 1183 } 1184 XMesaPutImage(b->display, (XMesaDrawable) v->hpcr_clear_pixmap, 1185 b->cleargc, v->hpcr_clear_ximage, 0, 0, 0, 0, 16, 2); 1186 XMesaSetFillStyle( v->display, b->cleargc, FillTiled); 1187 XMesaSetTile( v->display, b->cleargc, v->hpcr_clear_pixmap ); 1188 } 1189 1190 /* Initialize the row buffer XImage for use in write_color_span() */ 1191 data = (char*) MALLOC(MAX_WIDTH*4); 1192#ifdef XFree86Server 1193 b->rowimage = XMesaCreateImage(GET_VISUAL_DEPTH(v), MAX_WIDTH, 1, data); 1194#else 1195 b->rowimage = XCreateImage( v->display, 1196 v->visinfo->visual, 1197 v->visinfo->depth, 1198 ZPixmap, 0, /*format, offset*/ 1199 data, /*data*/ 1200 MAX_WIDTH, 1, /*width, height*/ 1201 32, /*bitmap_pad*/ 1202 0 /*bytes_per_line*/ ); 1203#endif 1204 if (!b->rowimage) 1205 return GL_FALSE; 1206 } 1207 1208 return GL_TRUE; 1209} 1210 1211 1212 1213/* 1214 * Convert an RGBA color to a pixel value. 1215 */ 1216unsigned long 1217xmesa_color_to_pixel(GLcontext *ctx, 1218 GLubyte r, GLubyte g, GLubyte b, GLubyte a, 1219 GLuint pixelFormat) 1220{ 1221 XMesaContext xmesa = XMESA_CONTEXT(ctx); 1222 switch (pixelFormat) { 1223 case PF_Index: 1224 return 0; 1225 case PF_Truecolor: 1226 { 1227 unsigned long p; 1228 PACK_TRUECOLOR( p, r, g, b ); 1229 return p; 1230 } 1231 case PF_8A8B8G8R: 1232 return PACK_8A8B8G8R( r, g, b, a ); 1233 case PF_8A8R8G8B: 1234 return PACK_8A8R8G8B( r, g, b, a ); 1235 case PF_8R8G8B: 1236 /* fall through */ 1237 case PF_8R8G8B24: 1238 return PACK_8R8G8B( r, g, b ); 1239 case PF_5R6G5B: 1240 return PACK_5R6G5B( r, g, b ); 1241 case PF_Dither: 1242 { 1243 DITHER_SETUP; 1244 return DITHER( 1, 0, r, g, b ); 1245 } 1246 case PF_1Bit: 1247 /* 382 = (3*255)/2 */ 1248 return ((r+g+b) > 382) ^ xmesa->xm_visual->bitFlip; 1249 case PF_HPCR: 1250 return DITHER_HPCR(1, 1, r, g, b); 1251 case PF_Lookup: 1252 { 1253 LOOKUP_SETUP; 1254 return LOOKUP( r, g, b ); 1255 } 1256 case PF_Grayscale: 1257 return GRAY_RGB( r, g, b ); 1258 case PF_Dither_True: 1259 /* fall through */ 1260 case PF_Dither_5R6G5B: 1261 { 1262 unsigned long p; 1263 PACK_TRUEDITHER(p, 1, 0, r, g, b); 1264 return p; 1265 } 1266 default: 1267 _mesa_problem(ctx, "Bad pixel format in xmesa_color_to_pixel"); 1268 } 1269 return 0; 1270} 1271 1272 1273#define NUM_VISUAL_TYPES 6 1274 1275/** 1276 * Convert an X visual type to a GLX visual type. 1277 * 1278 * \param visualType X visual type (i.e., \c TrueColor, \c StaticGray, etc.) 1279 * to be converted. 1280 * \return If \c visualType is a valid X visual type, a GLX visual type will 1281 * be returned. Otherwise \c GLX_NONE will be returned. 1282 * 1283 * \note 1284 * This code was lifted directly from lib/GL/glx/glcontextmodes.c in the 1285 * DRI CVS tree. 1286 */ 1287static GLint 1288xmesa_convert_from_x_visual_type( int visualType ) 1289{ 1290 static const int glx_visual_types[ NUM_VISUAL_TYPES ] = { 1291 GLX_STATIC_GRAY, GLX_GRAY_SCALE, 1292 GLX_STATIC_COLOR, GLX_PSEUDO_COLOR, 1293 GLX_TRUE_COLOR, GLX_DIRECT_COLOR 1294 }; 1295 1296 return ( (unsigned) visualType < NUM_VISUAL_TYPES ) 1297 ? glx_visual_types[ visualType ] : GLX_NONE; 1298} 1299 1300 1301/**********************************************************************/ 1302/***** Public Functions *****/ 1303/**********************************************************************/ 1304 1305 1306#ifdef IN_DRI_DRIVER 1307#define need_GL_VERSION_1_3 1308#define need_GL_VERSION_1_4 1309#define need_GL_VERSION_1_5 1310#define need_GL_VERSION_2_0 1311 1312/* sw extensions for imaging */ 1313#define need_GL_EXT_blend_color 1314#define need_GL_EXT_blend_minmax 1315#define need_GL_EXT_convolution 1316#define need_GL_EXT_histogram 1317#define need_GL_SGI_color_table 1318 1319/* sw extensions not associated with some GL version */ 1320#define need_GL_ARB_shader_objects 1321#define need_GL_ARB_vertex_program 1322#define need_GL_APPLE_vertex_array_object 1323#define need_GL_ATI_fragment_shader 1324#define need_GL_EXT_depth_bounds_test 1325#define need_GL_EXT_framebuffer_object 1326#define need_GL_EXT_framebuffer_blit 1327#define need_GL_EXT_gpu_program_parameters 1328#define need_GL_EXT_paletted_texture 1329#define need_GL_MESA_resize_buffers 1330#define need_GL_NV_vertex_program 1331#define need_GL_NV_fragment_program 1332 1333#include "extension_helper.h" 1334#include "utils.h" 1335 1336const struct dri_extension card_extensions[] = 1337{ 1338 { "GL_VERSION_1_3", GL_VERSION_1_3_functions }, 1339 { "GL_VERSION_1_4", GL_VERSION_1_4_functions }, 1340 { "GL_VERSION_1_5", GL_VERSION_1_5_functions }, 1341 { "GL_VERSION_2_0", GL_VERSION_2_0_functions }, 1342 1343 { "GL_EXT_blend_color", GL_EXT_blend_color_functions }, 1344 { "GL_EXT_blend_minmax", GL_EXT_blend_minmax_functions }, 1345 { "GL_EXT_convolution", GL_EXT_convolution_functions }, 1346 { "GL_EXT_histogram", GL_EXT_histogram_functions }, 1347 { "GL_SGI_color_table", GL_SGI_color_table_functions }, 1348 1349 { "GL_ARB_shader_objects", GL_ARB_shader_objects_functions }, 1350 { "GL_ARB_vertex_program", GL_ARB_vertex_program_functions }, 1351 { "GL_APPLE_vertex_array_object", GL_APPLE_vertex_array_object_functions }, 1352 { "GL_ATI_fragment_shader", GL_ATI_fragment_shader_functions }, 1353 { "GL_EXT_depth_bounds_test", GL_EXT_depth_bounds_test_functions }, 1354 { "GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions }, 1355 { "GL_EXT_framebuffer_blit", GL_EXT_framebuffer_blit_functions }, 1356 { "GL_EXT_gpu_program_parameters", GL_EXT_gpu_program_parameters_functions }, 1357 { "GL_EXT_paletted_texture", GL_EXT_paletted_texture_functions }, 1358 { "GL_MESA_resize_buffers", GL_MESA_resize_buffers_functions }, 1359 { "GL_NV_vertex_program", GL_NV_vertex_program_functions }, 1360 { "GL_NV_fragment_program", GL_NV_fragment_program_functions }, 1361 { NULL, NULL } 1362}; 1363#endif 1364 1365/* 1366 * Create a new X/Mesa visual. 1367 * Input: display - X11 display 1368 * visinfo - an XVisualInfo pointer 1369 * rgb_flag - GL_TRUE = RGB mode, 1370 * GL_FALSE = color index mode 1371 * alpha_flag - alpha buffer requested? 1372 * db_flag - GL_TRUE = double-buffered, 1373 * GL_FALSE = single buffered 1374 * stereo_flag - stereo visual? 1375 * ximage_flag - GL_TRUE = use an XImage for back buffer, 1376 * GL_FALSE = use an off-screen pixmap for back buffer 1377 * depth_size - requested bits/depth values, or zero 1378 * stencil_size - requested bits/stencil values, or zero 1379 * accum_red_size - requested bits/red accum values, or zero 1380 * accum_green_size - requested bits/green accum values, or zero 1381 * accum_blue_size - requested bits/blue accum values, or zero 1382 * accum_alpha_size - requested bits/alpha accum values, or zero 1383 * num_samples - number of samples/pixel if multisampling, or zero 1384 * level - visual level, usually 0 1385 * visualCaveat - ala the GLX extension, usually GLX_NONE 1386 * Return; a new XMesaVisual or 0 if error. 1387 */ 1388PUBLIC 1389XMesaVisual XMesaCreateVisual( XMesaDisplay *display, 1390 XMesaVisualInfo visinfo, 1391 GLboolean rgb_flag, 1392 GLboolean alpha_flag, 1393 GLboolean db_flag, 1394 GLboolean stereo_flag, 1395 GLboolean ximage_flag, 1396 GLint depth_size, 1397 GLint stencil_size, 1398 GLint accum_red_size, 1399 GLint accum_green_size, 1400 GLint accum_blue_size, 1401 GLint accum_alpha_size, 1402 GLint num_samples, 1403 GLint level, 1404 GLint visualCaveat ) 1405{ 1406 char *gamma; 1407 XMesaVisual v; 1408 GLint red_bits, green_bits, blue_bits, alpha_bits; 1409 1410#ifdef IN_DRI_DRIVER 1411 /* driInitExtensions() should be called once per screen to setup extension 1412 * indices. There is no need to call it when the context is created since 1413 * XMesa enables mesa sw extensions on its own. 1414 */ 1415 driInitExtensions( NULL, card_extensions, GL_FALSE ); 1416#endif 1417 1418#ifndef XFree86Server 1419 /* For debugging only */ 1420 if (_mesa_getenv("MESA_XSYNC")) { 1421 /* This makes debugging X easier. 1422 * In your debugger, set a breakpoint on _XError to stop when an 1423 * X protocol error is generated. 1424 */ 1425 XSynchronize( display, 1 ); 1426 } 1427#endif 1428 1429 v = (XMesaVisual) CALLOC_STRUCT(xmesa_visual); 1430 if (!v) { 1431 return NULL; 1432 } 1433 1434 v->display = display; 1435 1436 /* Save a copy of the XVisualInfo struct because the user may X_mesa_free() 1437 * the struct but we may need some of the information contained in it 1438 * at a later time. 1439 */ 1440#ifndef XFree86Server 1441 v->visinfo = (XVisualInfo *) MALLOC(sizeof(*visinfo)); 1442 if(!v->visinfo) { 1443 _mesa_free(v); 1444 return NULL; 1445 } 1446 MEMCPY(v->visinfo, visinfo, sizeof(*visinfo)); 1447#endif 1448 1449 /* check for MESA_GAMMA environment variable */ 1450 gamma = _mesa_getenv("MESA_GAMMA"); 1451 if (gamma) { 1452 v->RedGamma = v->GreenGamma = v->BlueGamma = 0.0; 1453 sscanf( gamma, "%f %f %f", &v->RedGamma, &v->GreenGamma, &v->BlueGamma ); 1454 if (v->RedGamma<=0.0) v->RedGamma = 1.0; 1455 if (v->GreenGamma<=0.0) v->GreenGamma = v->RedGamma; 1456 if (v->BlueGamma<=0.0) v->BlueGamma = v->RedGamma; 1457 } 1458 else { 1459 v->RedGamma = v->GreenGamma = v->BlueGamma = 1.0; 1460 } 1461 1462 v->ximage_flag = ximage_flag; 1463 1464#ifdef XFree86Server 1465 /* We could calculate these values by ourselves. nplanes is either the sum 1466 * of the red, green, and blue bits or the number index bits. 1467 * ColormapEntries is either (1U << index_bits) or 1468 * (1U << max(redBits, greenBits, blueBits)). 1469 */ 1470 assert(visinfo->nplanes > 0); 1471 v->nplanes = visinfo->nplanes; 1472 v->ColormapEntries = visinfo->ColormapEntries; 1473 1474 v->mesa_visual.redMask = visinfo->redMask; 1475 v->mesa_visual.greenMask = visinfo->greenMask; 1476 v->mesa_visual.blueMask = visinfo->blueMask; 1477 v->mesa_visual.visualID = visinfo->vid; 1478 v->mesa_visual.screen = 0; /* FIXME: What should be done here? */ 1479#else 1480 v->mesa_visual.redMask = visinfo->red_mask; 1481 v->mesa_visual.greenMask = visinfo->green_mask; 1482 v->mesa_visual.blueMask = visinfo->blue_mask; 1483 v->mesa_visual.visualID = visinfo->visualid; 1484 v->mesa_visual.screen = visinfo->screen; 1485#endif 1486 1487#if defined(XFree86Server) || !(defined(__cplusplus) || defined(c_plusplus)) 1488 v->mesa_visual.visualType = xmesa_convert_from_x_visual_type(visinfo->class); 1489#else 1490 v->mesa_visual.visualType = xmesa_convert_from_x_visual_type(visinfo->c_class); 1491#endif 1492 1493 v->mesa_visual.visualRating = visualCaveat; 1494 1495 if (alpha_flag) 1496 v->mesa_visual.alphaBits = 8; 1497 1498 (void) initialize_visual_and_buffer( v, NULL, rgb_flag, 0, 0 ); 1499 1500 { 1501 const int xclass = v->mesa_visual.visualType; 1502 if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) { 1503 red_bits = _mesa_bitcount(GET_REDMASK(v)); 1504 green_bits = _mesa_bitcount(GET_GREENMASK(v)); 1505 blue_bits = _mesa_bitcount(GET_BLUEMASK(v)); 1506 } 1507 else { 1508 /* this is an approximation */ 1509 int depth; 1510 depth = GET_VISUAL_DEPTH(v); 1511 red_bits = depth / 3; 1512 depth -= red_bits; 1513 green_bits = depth / 2; 1514 depth -= green_bits; 1515 blue_bits = depth; 1516 alpha_bits = 0; 1517 assert( red_bits + green_bits + blue_bits == GET_VISUAL_DEPTH(v) ); 1518 } 1519 alpha_bits = v->mesa_visual.alphaBits; 1520 } 1521 1522 _mesa_initialize_visual( &v->mesa_visual, 1523 rgb_flag, db_flag, stereo_flag, 1524 red_bits, green_bits, 1525 blue_bits, alpha_bits, 1526 v->mesa_visual.indexBits, 1527 depth_size, 1528 stencil_size, 1529 accum_red_size, accum_green_size, 1530 accum_blue_size, accum_alpha_size, 1531 0 ); 1532 1533 /* XXX minor hack */ 1534 v->mesa_visual.level = level; 1535 return v; 1536} 1537 1538 1539PUBLIC 1540void XMesaDestroyVisual( XMesaVisual v ) 1541{ 1542#ifndef XFree86Server 1543 _mesa_free(v->visinfo); 1544#endif 1545 _mesa_free(v); 1546} 1547 1548 1549 1550/** 1551 * Create a new XMesaContext. 1552 * \param v the XMesaVisual 1553 * \param share_list another XMesaContext with which to share display 1554 * lists or NULL if no sharing is wanted. 1555 * \return an XMesaContext or NULL if error. 1556 */ 1557PUBLIC 1558XMesaContext XMesaCreateContext( XMesaVisual v, XMesaContext share_list ) 1559{ 1560 static GLboolean firstTime = GL_TRUE; 1561 XMesaContext c; 1562 GLcontext *mesaCtx; 1563 struct dd_function_table functions; 1564 TNLcontext *tnl; 1565 1566 if (firstTime) { 1567 _glthread_INIT_MUTEX(_xmesa_lock); 1568 firstTime = GL_FALSE; 1569 } 1570 1571 /* Note: the XMesaContext contains a Mesa GLcontext struct (inheritance) */ 1572 c = (XMesaContext) CALLOC_STRUCT(xmesa_context); 1573 if (!c) 1574 return NULL; 1575 1576 mesaCtx = &(c->mesa); 1577 1578 /* initialize with default driver functions, then plug in XMesa funcs */ 1579 _mesa_init_driver_functions(&functions); 1580 xmesa_init_driver_functions(v, &functions); 1581 if (!_mesa_initialize_context(mesaCtx, &v->mesa_visual, 1582 share_list ? &(share_list->mesa) : (GLcontext *) NULL, 1583 &functions, (void *) c)) { 1584 _mesa_free(c); 1585 return NULL; 1586 } 1587 1588 /* Enable this to exercise fixed function -> shader translation 1589 * with software rendering. 1590 */ 1591 if (0) { 1592 mesaCtx->VertexProgram._MaintainTnlProgram = GL_TRUE; 1593 mesaCtx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE; 1594 } 1595 1596 _mesa_enable_sw_extensions(mesaCtx); 1597 _mesa_enable_1_3_extensions(mesaCtx); 1598 _mesa_enable_1_4_extensions(mesaCtx); 1599 _mesa_enable_1_5_extensions(mesaCtx); 1600 _mesa_enable_2_0_extensions(mesaCtx); 1601 _mesa_enable_2_1_extensions(mesaCtx); 1602#if ENABLE_EXT_texure_compression_s3tc 1603 if (mesaCtx->Mesa_DXTn) { 1604 _mesa_enable_extension(mesaCtx, "GL_EXT_texture_compression_s3tc"); 1605 _mesa_enable_extension(mesaCtx, "GL_S3_s3tc"); 1606 } 1607 _mesa_enable_extension(mesaCtx, "GL_3DFX_texture_compression_FXT1"); 1608#endif 1609#if ENABLE_EXT_timer_query 1610 _mesa_enable_extension(mesaCtx, "GL_EXT_timer_query"); 1611#endif 1612 1613#ifdef XFree86Server 1614 /* If we're running in the X server, do bounds checking to prevent 1615 * segfaults and server crashes! 1616 */ 1617 mesaCtx->Const.CheckArrayBounds = GL_TRUE; 1618#endif 1619 1620 /* finish up xmesa context initializations */ 1621 c->swapbytes = CHECK_BYTE_ORDER(v) ? GL_FALSE : GL_TRUE; 1622 c->xm_visual = v; 1623 c->xm_buffer = NULL; /* set later by XMesaMakeCurrent */ 1624 c->display = v->display; 1625 c->pixelformat = v->dithered_pf; /* Dithering is enabled by default */ 1626 1627 /* Initialize the software rasterizer and helper modules. 1628 */ 1629 if (!_swrast_CreateContext( mesaCtx ) || 1630 !_vbo_CreateContext( mesaCtx ) || 1631 !_tnl_CreateContext( mesaCtx ) || 1632 !_swsetup_CreateContext( mesaCtx )) { 1633 _mesa_free_context_data(&c->mesa); 1634 _mesa_free(c); 1635 return NULL; 1636 } 1637 1638 /* tnl setup */ 1639 tnl = TNL_CONTEXT(mesaCtx); 1640 tnl->Driver.RunPipeline = _tnl_run_pipeline; 1641 /* swrast setup */ 1642 xmesa_register_swrast_functions( mesaCtx ); 1643 _swsetup_Wakeup(mesaCtx); 1644 1645 if (TEST_META_FUNCS) 1646 _mesa_meta_init(mesaCtx); 1647 1648 return c; 1649} 1650 1651 1652 1653PUBLIC 1654void XMesaDestroyContext( XMesaContext c ) 1655{ 1656 GLcontext *mesaCtx = &c->mesa; 1657 1658#ifdef FX 1659 FXdestroyContext( XMESA_BUFFER(mesaCtx->DrawBuffer) ); 1660#endif 1661 1662 if (TEST_META_FUNCS) 1663 _mesa_meta_free( mesaCtx ); 1664 1665 _swsetup_DestroyContext( mesaCtx ); 1666 _swrast_DestroyContext( mesaCtx ); 1667 _tnl_DestroyContext( mesaCtx ); 1668 _vbo_DestroyContext( mesaCtx ); 1669 _mesa_free_context_data( mesaCtx ); 1670 _mesa_free( c ); 1671} 1672 1673 1674 1675/** 1676 * Private function for creating an XMesaBuffer which corresponds to an 1677 * X window or pixmap. 1678 * \param v the window's XMesaVisual 1679 * \param w the window we're wrapping 1680 * \return new XMesaBuffer or NULL if error 1681 */ 1682PUBLIC XMesaBuffer 1683XMesaCreateWindowBuffer(XMesaVisual v, XMesaWindow w) 1684{ 1685#ifndef XFree86Server 1686 XWindowAttributes attr; 1687#endif 1688 XMesaBuffer b; 1689 XMesaColormap cmap; 1690 int depth; 1691 1692 assert(v); 1693 assert(w); 1694 1695 /* Check that window depth matches visual depth */ 1696#ifdef XFree86Server 1697 depth = ((XMesaDrawable)w)->depth; 1698#else 1699 XGetWindowAttributes( v->display, w, &attr ); 1700 depth = attr.depth; 1701#endif 1702 if (GET_VISUAL_DEPTH(v) != depth) { 1703 _mesa_warning(NULL, "XMesaCreateWindowBuffer: depth mismatch between visual (%d) and window (%d)!\n", 1704 GET_VISUAL_DEPTH(v), depth); 1705 return NULL; 1706 } 1707 1708 /* Find colormap */ 1709#ifdef XFree86Server 1710 cmap = (ColormapPtr)LookupIDByType(wColormap(w), RT_COLORMAP); 1711#else 1712 if (attr.colormap) { 1713 cmap = attr.colormap; 1714 } 1715 else { 1716 _mesa_warning(NULL, "Window %u has no colormap!\n", (unsigned int) w); 1717 /* this is weird, a window w/out a colormap!? */ 1718 /* OK, let's just allocate a new one and hope for the best */ 1719 cmap = XCreateColormap(v->display, w, attr.visual, AllocNone); 1720 } 1721#endif 1722 1723 b = create_xmesa_buffer((XMesaDrawable) w, WINDOW, v, cmap); 1724 if (!b) 1725 return NULL; 1726 1727 if (!initialize_visual_and_buffer( v, b, v->mesa_visual.rgbMode, 1728 (XMesaDrawable) w, cmap )) { 1729 xmesa_free_buffer(b); 1730 return NULL; 1731 } 1732 1733 return b; 1734} 1735 1736 1737 1738/** 1739 * Create a new XMesaBuffer from an X pixmap. 1740 * 1741 * \param v the XMesaVisual 1742 * \param p the pixmap 1743 * \param cmap the colormap, may be 0 if using a \c GLX_TRUE_COLOR or 1744 * \c GLX_DIRECT_COLOR visual for the pixmap 1745 * \returns new XMesaBuffer or NULL if error 1746 */ 1747PUBLIC XMesaBuffer 1748XMesaCreatePixmapBuffer(XMesaVisual v, XMesaPixmap p, XMesaColormap cmap) 1749{ 1750 XMesaBuffer b; 1751 1752 assert(v); 1753 1754 b = create_xmesa_buffer((XMesaDrawable) p, PIXMAP, v, cmap); 1755 if (!b) 1756 return NULL; 1757 1758 if (!initialize_visual_and_buffer(v, b, v->mesa_visual.rgbMode, 1759 (XMesaDrawable) p, cmap)) { 1760 xmesa_free_buffer(b); 1761 return NULL; 1762 } 1763 1764 return b; 1765} 1766 1767 1768/** 1769 * For GLX_EXT_texture_from_pixmap 1770 */ 1771XMesaBuffer 1772XMesaCreatePixmapTextureBuffer(XMesaVisual v, XMesaPixmap p, 1773 XMesaColormap cmap, 1774 int format, int target, int mipmap) 1775{ 1776 GET_CURRENT_CONTEXT(ctx); 1777 XMesaBuffer b; 1778 GLuint width, height; 1779 1780 assert(v); 1781 1782 b = create_xmesa_buffer((XMesaDrawable) p, PIXMAP, v, cmap); 1783 if (!b) 1784 return NULL; 1785 1786 /* get pixmap size, update framebuffer/renderbuffer dims */ 1787 xmesa_get_window_size(v->display, b, &width, &height); 1788 _mesa_resize_framebuffer(NULL, &(b->mesa_buffer), width, height); 1789 1790 if (target == 0) { 1791 /* examine dims */ 1792 if (ctx->Extensions.ARB_texture_non_power_of_two) { 1793 target = GLX_TEXTURE_2D_EXT; 1794 } 1795 else if ( _mesa_bitcount(width) == 1 1796 && _mesa_bitcount(height) == 1) { 1797 /* power of two size */ 1798 if (height == 1) { 1799 target = GLX_TEXTURE_1D_EXT; 1800 } 1801 else { 1802 target = GLX_TEXTURE_2D_EXT; 1803 } 1804 } 1805 else if (ctx->Extensions.NV_texture_rectangle) { 1806 target = GLX_TEXTURE_RECTANGLE_EXT; 1807 } 1808 else { 1809 /* non power of two textures not supported */ 1810 XMesaDestroyBuffer(b); 1811 return 0; 1812 } 1813 } 1814 1815 b->TextureTarget = target; 1816 b->TextureFormat = format; 1817 b->TextureMipmap = mipmap; 1818 1819 if (!initialize_visual_and_buffer(v, b, v->mesa_visual.rgbMode, 1820 (XMesaDrawable) p, cmap)) { 1821 xmesa_free_buffer(b); 1822 return NULL; 1823 } 1824 1825 return b; 1826} 1827 1828 1829 1830XMesaBuffer 1831XMesaCreatePBuffer(XMesaVisual v, XMesaColormap cmap, 1832 unsigned int width, unsigned int height) 1833{ 1834#ifndef XFree86Server 1835 XMesaWindow root; 1836 XMesaDrawable drawable; /* X Pixmap Drawable */ 1837 XMesaBuffer b; 1838 1839 /* allocate pixmap for front buffer */ 1840 root = RootWindow( v->display, v->visinfo->screen ); 1841 drawable = XCreatePixmap(v->display, root, width, height, 1842 v->visinfo->depth); 1843 if (!drawable) 1844 return NULL; 1845 1846 b = create_xmesa_buffer(drawable, PBUFFER, v, cmap); 1847 if (!b) 1848 return NULL; 1849 1850 if (!initialize_visual_and_buffer(v, b, v->mesa_visual.rgbMode, 1851 drawable, cmap)) { 1852 xmesa_free_buffer(b); 1853 return NULL; 1854 } 1855 1856 return b; 1857#else 1858 return 0; 1859#endif 1860} 1861 1862 1863 1864/* 1865 * Deallocate an XMesaBuffer structure and all related info. 1866 */ 1867PUBLIC void 1868XMesaDestroyBuffer(XMesaBuffer b) 1869{ 1870 xmesa_free_buffer(b); 1871} 1872 1873 1874/** 1875 * Query the current window size and update the corresponding GLframebuffer 1876 * and all attached renderbuffers. 1877 * Called when: 1878 * 1. the first time a buffer is bound to a context. 1879 * 2. from glViewport to poll for window size changes 1880 * 3. from the XMesaResizeBuffers() API function. 1881 * Note: it's possible (and legal) for xmctx to be NULL. That can happen 1882 * when resizing a buffer when no rendering context is bound. 1883 */ 1884void 1885xmesa_check_and_update_buffer_size(XMesaContext xmctx, XMesaBuffer drawBuffer) 1886{ 1887 GLuint width, height; 1888 xmesa_get_window_size(drawBuffer->display, drawBuffer, &width, &height); 1889 if (drawBuffer->mesa_buffer.Width != width || 1890 drawBuffer->mesa_buffer.Height != height) { 1891 GLcontext *ctx = xmctx ? &xmctx->mesa : NULL; 1892 _mesa_resize_framebuffer(ctx, &(drawBuffer->mesa_buffer), width, height); 1893 } 1894 drawBuffer->mesa_buffer.Initialized = GL_TRUE; /* XXX TEMPORARY? */ 1895} 1896 1897 1898/* 1899 * Bind buffer b to context c and make c the current rendering context. 1900 */ 1901GLboolean XMesaMakeCurrent( XMesaContext c, XMesaBuffer b ) 1902{ 1903 return XMesaMakeCurrent2( c, b, b ); 1904} 1905 1906 1907/* 1908 * Bind buffer b to context c and make c the current rendering context. 1909 */ 1910PUBLIC 1911GLboolean XMesaMakeCurrent2( XMesaContext c, XMesaBuffer drawBuffer, 1912 XMesaBuffer readBuffer ) 1913{ 1914 if (c) { 1915 if (!drawBuffer || !readBuffer) 1916 return GL_FALSE; /* must specify buffers! */ 1917 1918 if (&(c->mesa) == _mesa_get_current_context() 1919 && c->mesa.DrawBuffer == &drawBuffer->mesa_buffer 1920 && c->mesa.ReadBuffer == &readBuffer->mesa_buffer 1921 && XMESA_BUFFER(c->mesa.DrawBuffer)->wasCurrent) { 1922 /* same context and buffer, do nothing */ 1923 return GL_TRUE; 1924 } 1925 1926 c->xm_buffer = drawBuffer; 1927 1928#ifdef FX 1929 if (FXmakeCurrent( drawBuffer )) 1930 return GL_TRUE; 1931#endif 1932 1933 /* Call this periodically to detect when the user has begun using 1934 * GL rendering from multiple threads. 1935 */ 1936 _glapi_check_multithread(); 1937 1938 xmesa_check_and_update_buffer_size(c, drawBuffer); 1939 if (readBuffer != drawBuffer) 1940 xmesa_check_and_update_buffer_size(c, readBuffer); 1941 1942 _mesa_make_current(&(c->mesa), 1943 &drawBuffer->mesa_buffer, 1944 &readBuffer->mesa_buffer); 1945 1946 if (c->xm_visual->mesa_visual.rgbMode) { 1947 /* 1948 * Must recompute and set these pixel values because colormap 1949 * can be different for different windows. 1950 */ 1951 c->clearpixel = xmesa_color_to_pixel( &c->mesa, 1952 c->clearcolor[0], 1953 c->clearcolor[1], 1954 c->clearcolor[2], 1955 c->clearcolor[3], 1956 c->xm_visual->undithered_pf); 1957 XMesaSetForeground(c->display, drawBuffer->cleargc, c->clearpixel); 1958 } 1959 1960 /* Solution to Stephane Rehel's problem with glXReleaseBuffersMESA(): */ 1961 drawBuffer->wasCurrent = GL_TRUE; 1962 } 1963 else { 1964 /* Detach */ 1965 _mesa_make_current( NULL, NULL, NULL ); 1966 } 1967 return GL_TRUE; 1968} 1969 1970 1971/* 1972 * Unbind the context c from its buffer. 1973 */ 1974GLboolean XMesaUnbindContext( XMesaContext c ) 1975{ 1976 /* A no-op for XFree86 integration purposes */ 1977 return GL_TRUE; 1978} 1979 1980 1981XMesaContext XMesaGetCurrentContext( void ) 1982{ 1983 GET_CURRENT_CONTEXT(ctx); 1984 if (ctx) { 1985 XMesaContext xmesa = XMESA_CONTEXT(ctx); 1986 return xmesa; 1987 } 1988 else { 1989 return 0; 1990 } 1991} 1992 1993 1994XMesaBuffer XMesaGetCurrentBuffer( void ) 1995{ 1996 GET_CURRENT_CONTEXT(ctx); 1997 if (ctx) { 1998 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); 1999 return xmbuf; 2000 } 2001 else { 2002 return 0; 2003 } 2004} 2005 2006 2007/* New in Mesa 3.1 */ 2008XMesaBuffer XMesaGetCurrentReadBuffer( void ) 2009{ 2010 GET_CURRENT_CONTEXT(ctx); 2011 if (ctx) { 2012 return XMESA_BUFFER(ctx->ReadBuffer); 2013 } 2014 else { 2015 return 0; 2016 } 2017} 2018 2019 2020#ifdef XFree86Server 2021PUBLIC 2022GLboolean XMesaForceCurrent(XMesaContext c) 2023{ 2024 if (c) { 2025 _glapi_set_dispatch(c->mesa.CurrentDispatch); 2026 2027 if (&(c->mesa) != _mesa_get_current_context()) { 2028 _mesa_make_current(&c->mesa, c->mesa.DrawBuffer, c->mesa.ReadBuffer); 2029 } 2030 } 2031 else { 2032 _mesa_make_current(NULL, NULL, NULL); 2033 } 2034 return GL_TRUE; 2035} 2036 2037 2038PUBLIC 2039GLboolean XMesaLoseCurrent(XMesaContext c) 2040{ 2041 (void) c; 2042 _mesa_make_current(NULL, NULL, NULL); 2043 return GL_TRUE; 2044} 2045 2046 2047PUBLIC 2048GLboolean XMesaCopyContext( XMesaContext xm_src, XMesaContext xm_dst, GLuint mask ) 2049{ 2050 _mesa_copy_context(&xm_src->mesa, &xm_dst->mesa, mask); 2051 return GL_TRUE; 2052} 2053#endif /* XFree86Server */ 2054 2055 2056#ifndef FX 2057GLboolean XMesaSetFXmode( GLint mode ) 2058{ 2059 (void) mode; 2060 return GL_FALSE; 2061} 2062#endif 2063 2064 2065 2066/* 2067 * Copy the back buffer to the front buffer. If there's no back buffer 2068 * this is a no-op. 2069 */ 2070PUBLIC 2071void XMesaSwapBuffers( XMesaBuffer b ) 2072{ 2073 GET_CURRENT_CONTEXT(ctx); 2074 2075 if (!b->backxrb) { 2076 /* single buffered */ 2077 return; 2078 } 2079 2080 /* If we're swapping the buffer associated with the current context 2081 * we have to flush any pending rendering commands first. 2082 */ 2083 if (ctx && ctx->DrawBuffer == &(b->mesa_buffer)) 2084 _mesa_notifySwapBuffers(ctx); 2085 2086 if (b->db_mode) { 2087#ifdef FX 2088 if (FXswapBuffers(b)) 2089 return; 2090#endif 2091 if (b->backxrb->ximage) { 2092 /* Copy Ximage (back buf) from client memory to server window */ 2093#if defined(USE_XSHM) && !defined(XFree86Server) 2094 if (b->shm) { 2095 /*_glthread_LOCK_MUTEX(_xmesa_lock);*/ 2096 XShmPutImage( b->xm_visual->display, b->frontxrb->drawable, 2097 b->swapgc, 2098 b->backxrb->ximage, 0, 0, 2099 0, 0, b->mesa_buffer.Width, b->mesa_buffer.Height, 2100 False ); 2101 /*_glthread_UNLOCK_MUTEX(_xmesa_lock);*/ 2102 } 2103 else 2104#endif 2105 { 2106 /*_glthread_LOCK_MUTEX(_xmesa_lock);*/ 2107 XMesaPutImage( b->xm_visual->display, b->frontxrb->drawable, 2108 b->swapgc, 2109 b->backxrb->ximage, 0, 0, 2110 0, 0, b->mesa_buffer.Width, b->mesa_buffer.Height ); 2111 /*_glthread_UNLOCK_MUTEX(_xmesa_lock);*/ 2112 } 2113 } 2114 else if (b->backxrb->pixmap) { 2115 /* Copy pixmap (back buf) to window (front buf) on server */ 2116 /*_glthread_LOCK_MUTEX(_xmesa_lock);*/ 2117 XMesaCopyArea( b->xm_visual->display, 2118 b->backxrb->pixmap, /* source drawable */ 2119 b->frontxrb->drawable, /* dest. drawable */ 2120 b->swapgc, 2121 0, 0, b->mesa_buffer.Width, b->mesa_buffer.Height, 2122 0, 0 /* dest region */ 2123 ); 2124 /*_glthread_UNLOCK_MUTEX(_xmesa_lock);*/ 2125 } 2126 2127 if (b->swAlpha) 2128 _mesa_copy_soft_alpha_renderbuffers(ctx, &b->mesa_buffer); 2129 } 2130#if !defined(XFree86Server) 2131 XSync( b->xm_visual->display, False ); 2132#endif 2133} 2134 2135 2136 2137/* 2138 * Copy sub-region of back buffer to front buffer 2139 */ 2140void XMesaCopySubBuffer( XMesaBuffer b, int x, int y, int width, int height ) 2141{ 2142 GET_CURRENT_CONTEXT(ctx); 2143 2144 /* If we're swapping the buffer associated with the current context 2145 * we have to flush any pending rendering commands first. 2146 */ 2147 if (ctx && ctx->DrawBuffer == &(b->mesa_buffer)) 2148 _mesa_notifySwapBuffers(ctx); 2149 2150 if (!b->backxrb) { 2151 /* single buffered */ 2152 return; 2153 } 2154 2155 if (b->db_mode) { 2156 int yTop = b->mesa_buffer.Height - y - height; 2157#ifdef FX 2158 if (FXswapBuffers(b)) 2159 return; 2160#endif 2161 if (b->backxrb->ximage) { 2162 /* Copy Ximage from host's memory to server's window */ 2163#if defined(USE_XSHM) && !defined(XFree86Server) 2164 if (b->shm) { 2165 /* XXX assuming width and height aren't too large! */ 2166 XShmPutImage( b->xm_visual->display, b->frontxrb->drawable, 2167 b->swapgc, 2168 b->backxrb->ximage, x, yTop, 2169 x, yTop, width, height, False ); 2170 /* wait for finished event??? */ 2171 } 2172 else 2173#endif 2174 { 2175 /* XXX assuming width and height aren't too large! */ 2176 XMesaPutImage( b->xm_visual->display, b->frontxrb->drawable, 2177 b->swapgc, 2178 b->backxrb->ximage, x, yTop, 2179 x, yTop, width, height ); 2180 } 2181 } 2182 else { 2183 /* Copy pixmap to window on server */ 2184 XMesaCopyArea( b->xm_visual->display, 2185 b->backxrb->pixmap, /* source drawable */ 2186 b->frontxrb->drawable, /* dest. drawable */ 2187 b->swapgc, 2188 x, yTop, width, height, /* source region */ 2189 x, yTop /* dest region */ 2190 ); 2191 } 2192 } 2193} 2194 2195 2196/* 2197 * Return a pointer to the XMesa backbuffer Pixmap or XImage. This function 2198 * is a way to get "under the hood" of X/Mesa so one can manipulate the 2199 * back buffer directly. 2200 * Output: pixmap - pointer to back buffer's Pixmap, or 0 2201 * ximage - pointer to back buffer's XImage, or NULL 2202 * Return: GL_TRUE = context is double buffered 2203 * GL_FALSE = context is single buffered 2204 */ 2205#ifndef XFree86Server 2206GLboolean XMesaGetBackBuffer( XMesaBuffer b, 2207 XMesaPixmap *pixmap, 2208 XMesaImage **ximage ) 2209{ 2210 if (b->db_mode) { 2211 if (pixmap) 2212 *pixmap = b->backxrb->pixmap; 2213 if (ximage) 2214 *ximage = b->backxrb->ximage; 2215 return GL_TRUE; 2216 } 2217 else { 2218 *pixmap = 0; 2219 *ximage = NULL; 2220 return GL_FALSE; 2221 } 2222} 2223#endif /* XFree86Server */ 2224 2225 2226/* 2227 * Return the depth buffer associated with an XMesaBuffer. 2228 * Input: b - the XMesa buffer handle 2229 * Output: width, height - size of buffer in pixels 2230 * bytesPerValue - bytes per depth value (2 or 4) 2231 * buffer - pointer to depth buffer values 2232 * Return: GL_TRUE or GL_FALSE to indicate success or failure. 2233 */ 2234GLboolean XMesaGetDepthBuffer( XMesaBuffer b, GLint *width, GLint *height, 2235 GLint *bytesPerValue, void **buffer ) 2236{ 2237 struct gl_renderbuffer *rb 2238 = b->mesa_buffer.Attachment[BUFFER_DEPTH].Renderbuffer; 2239 if (!rb || !rb->Data) { 2240 *width = 0; 2241 *height = 0; 2242 *bytesPerValue = 0; 2243 *buffer = 0; 2244 return GL_FALSE; 2245 } 2246 else { 2247 *width = b->mesa_buffer.Width; 2248 *height = b->mesa_buffer.Height; 2249 *bytesPerValue = b->mesa_buffer.Visual.depthBits <= 16 2250 ? sizeof(GLushort) : sizeof(GLuint); 2251 *buffer = rb->Data; 2252 return GL_TRUE; 2253 } 2254} 2255 2256 2257void XMesaFlush( XMesaContext c ) 2258{ 2259 if (c && c->xm_visual) { 2260#ifdef XFree86Server 2261 /* NOT_NEEDED */ 2262#else 2263 XSync( c->xm_visual->display, False ); 2264#endif 2265 } 2266} 2267 2268 2269 2270const char *XMesaGetString( XMesaContext c, int name ) 2271{ 2272 (void) c; 2273 if (name==XMESA_VERSION) { 2274 return "5.0"; 2275 } 2276 else if (name==XMESA_EXTENSIONS) { 2277 return ""; 2278 } 2279 else { 2280 return NULL; 2281 } 2282} 2283 2284 2285 2286XMesaBuffer XMesaFindBuffer( XMesaDisplay *dpy, XMesaDrawable d ) 2287{ 2288 XMesaBuffer b; 2289 for (b=XMesaBufferList; b; b=b->Next) { 2290 if (b->frontxrb->drawable == d && b->display == dpy) { 2291 return b; 2292 } 2293 } 2294 return NULL; 2295} 2296 2297 2298/** 2299 * Free/destroy all XMesaBuffers associated with given display. 2300 */ 2301void xmesa_destroy_buffers_on_display(XMesaDisplay *dpy) 2302{ 2303 XMesaBuffer b, next; 2304 for (b = XMesaBufferList; b; b = next) { 2305 next = b->Next; 2306 if (b->display == dpy) { 2307 xmesa_free_buffer(b); 2308 } 2309 } 2310} 2311 2312 2313/* 2314 * Look for XMesaBuffers whose X window has been destroyed. 2315 * Deallocate any such XMesaBuffers. 2316 */ 2317void XMesaGarbageCollect( void ) 2318{ 2319 XMesaBuffer b, next; 2320 for (b=XMesaBufferList; b; b=next) { 2321 next = b->Next; 2322 if (b->display && b->frontxrb->drawable && b->type == WINDOW) { 2323#ifdef XFree86Server 2324 /* NOT_NEEDED */ 2325#else 2326 XSync(b->display, False); 2327 if (!window_exists( b->display, b->frontxrb->drawable )) { 2328 /* found a dead window, free the ancillary info */ 2329 XMesaDestroyBuffer( b ); 2330 } 2331#endif 2332 } 2333 } 2334} 2335 2336 2337unsigned long XMesaDitherColor( XMesaContext xmesa, GLint x, GLint y, 2338 GLfloat red, GLfloat green, 2339 GLfloat blue, GLfloat alpha ) 2340{ 2341 GLcontext *ctx = &xmesa->mesa; 2342 GLint r = (GLint) (red * 255.0F); 2343 GLint g = (GLint) (green * 255.0F); 2344 GLint b = (GLint) (blue * 255.0F); 2345 GLint a = (GLint) (alpha * 255.0F); 2346 2347 switch (xmesa->pixelformat) { 2348 case PF_Index: 2349 return 0; 2350 case PF_Truecolor: 2351 { 2352 unsigned long p; 2353 PACK_TRUECOLOR( p, r, g, b ); 2354 return p; 2355 } 2356 case PF_8A8B8G8R: 2357 return PACK_8A8B8G8R( r, g, b, a ); 2358 case PF_8A8R8G8B: 2359 return PACK_8A8R8G8B( r, g, b, a ); 2360 case PF_8R8G8B: 2361 return PACK_8R8G8B( r, g, b ); 2362 case PF_5R6G5B: 2363 return PACK_5R6G5B( r, g, b ); 2364 case PF_Dither: 2365 { 2366 DITHER_SETUP; 2367 return DITHER( x, y, r, g, b ); 2368 } 2369 case PF_1Bit: 2370 /* 382 = (3*255)/2 */ 2371 return ((r+g+b) > 382) ^ xmesa->xm_visual->bitFlip; 2372 case PF_HPCR: 2373 return DITHER_HPCR(x, y, r, g, b); 2374 case PF_Lookup: 2375 { 2376 LOOKUP_SETUP; 2377 return LOOKUP( r, g, b ); 2378 } 2379 case PF_Grayscale: 2380 return GRAY_RGB( r, g, b ); 2381 case PF_Dither_5R6G5B: 2382 /* fall through */ 2383 case PF_Dither_True: 2384 { 2385 unsigned long p; 2386 PACK_TRUEDITHER(p, x, y, r, g, b); 2387 return p; 2388 } 2389 default: 2390 _mesa_problem(NULL, "Bad pixel format in XMesaDitherColor"); 2391 } 2392 return 0; 2393} 2394 2395 2396/* 2397 * This is typically called when the window size changes and we need 2398 * to reallocate the buffer's back/depth/stencil/accum buffers. 2399 */ 2400PUBLIC void 2401XMesaResizeBuffers( XMesaBuffer b ) 2402{ 2403 GET_CURRENT_CONTEXT(ctx); 2404 XMesaContext xmctx = XMESA_CONTEXT(ctx); 2405 if (!xmctx) 2406 return; 2407 xmesa_check_and_update_buffer_size(xmctx, b); 2408} 2409 2410 2411static GLint 2412xbuffer_to_renderbuffer(int buffer) 2413{ 2414 assert(MAX_AUX_BUFFERS <= 4); 2415 2416 switch (buffer) { 2417 case GLX_FRONT_LEFT_EXT: 2418 return BUFFER_FRONT_LEFT; 2419 case GLX_FRONT_RIGHT_EXT: 2420 return BUFFER_FRONT_RIGHT; 2421 case GLX_BACK_LEFT_EXT: 2422 return BUFFER_BACK_LEFT; 2423 case GLX_BACK_RIGHT_EXT: 2424 return BUFFER_BACK_RIGHT; 2425 case GLX_AUX0_EXT: 2426 return BUFFER_AUX0; 2427 case GLX_AUX1_EXT: 2428 case GLX_AUX2_EXT: 2429 case GLX_AUX3_EXT: 2430 case GLX_AUX4_EXT: 2431 case GLX_AUX5_EXT: 2432 case GLX_AUX6_EXT: 2433 case GLX_AUX7_EXT: 2434 case GLX_AUX8_EXT: 2435 case GLX_AUX9_EXT: 2436 default: 2437 /* BadValue error */ 2438 return -1; 2439 } 2440} 2441 2442 2443PUBLIC void 2444XMesaBindTexImage(XMesaDisplay *dpy, XMesaBuffer drawable, int buffer, 2445 const int *attrib_list) 2446{ 2447#if 0 2448 GET_CURRENT_CONTEXT(ctx); 2449 const GLuint unit = ctx->Texture.CurrentUnit; 2450 struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; 2451 struct gl_texture_object *texObj; 2452#endif 2453 struct gl_renderbuffer *rb; 2454 struct xmesa_renderbuffer *xrb; 2455 GLint b; 2456 XMesaImage *img = NULL; 2457 GLboolean freeImg = GL_FALSE; 2458 2459 b = xbuffer_to_renderbuffer(buffer); 2460 if (b < 0) 2461 return; 2462 2463 if (drawable->TextureFormat == GLX_TEXTURE_FORMAT_NONE_EXT) 2464 return; /* BadMatch error */ 2465 2466 rb = drawable->mesa_buffer.Attachment[b].Renderbuffer; 2467 if (!rb) { 2468 /* invalid buffer */ 2469 return; 2470 } 2471 xrb = xmesa_renderbuffer(rb); 2472 2473#if 0 2474 switch (drawable->TextureTarget) { 2475 case GLX_TEXTURE_1D_EXT: 2476 texObj = texUnit->CurrentTex[TEXTURE_1D_INDEX]; 2477 break; 2478 case GLX_TEXTURE_2D_EXT: 2479 texObj = texUnit->CurrentTex[TEXTURE_2D_INDEX]; 2480 break; 2481 case GLX_TEXTURE_RECTANGLE_EXT: 2482 texObj = texUnit->CurrentTex[TEXTURE_RECT_INDEX]; 2483 break; 2484 default: 2485 return; /* BadMatch error */ 2486 } 2487#endif 2488 2489 /* 2490 * The following is a quick and simple way to implement 2491 * BindTexImage. The better way is to write some new FetchTexel() 2492 * functions which would extract texels from XImages. We'd still 2493 * need to use GetImage when texturing from a Pixmap (front buffer) 2494 * but texturing from a back buffer (XImage) would avoid an image 2495 * copy. 2496 */ 2497 2498 /* get XImage */ 2499 if (xrb->pixmap) { 2500 img = XMesaGetImage(dpy, xrb->pixmap, 0, 0, rb->Width, rb->Height, ~0L, 2501 ZPixmap); 2502 freeImg = GL_TRUE; 2503 } 2504 else if (xrb->ximage) { 2505 img = xrb->ximage; 2506 } 2507 2508 /* store the XImage as a new texture image */ 2509 if (img) { 2510 GLenum format, type, intFormat; 2511 if (img->bits_per_pixel == 32) { 2512 format = GL_BGRA; 2513 type = GL_UNSIGNED_BYTE; 2514 intFormat = GL_RGBA; 2515 } 2516 else if (img->bits_per_pixel == 24) { 2517 format = GL_BGR; 2518 type = GL_UNSIGNED_BYTE; 2519 intFormat = GL_RGB; 2520 } 2521 else if (img->bits_per_pixel == 16) { 2522 format = GL_BGR; 2523 type = GL_UNSIGNED_SHORT_5_6_5; 2524 intFormat = GL_RGB; 2525 } 2526 else { 2527 _mesa_problem(NULL, "Unexpected XImage format in XMesaBindTexImage"); 2528 return; 2529 } 2530 if (drawable->TextureFormat == GLX_TEXTURE_FORMAT_RGBA_EXT) { 2531 intFormat = GL_RGBA; 2532 } 2533 else if (drawable->TextureFormat == GLX_TEXTURE_FORMAT_RGB_EXT) { 2534 intFormat = GL_RGB; 2535 } 2536 2537 _mesa_TexImage2D(GL_TEXTURE_2D, 0, intFormat, rb->Width, rb->Height, 0, 2538 format, type, img->data); 2539 2540 if (freeImg) { 2541 XMesaDestroyImage(img); 2542 } 2543 } 2544} 2545 2546 2547 2548PUBLIC void 2549XMesaReleaseTexImage(XMesaDisplay *dpy, XMesaBuffer drawable, int buffer) 2550{ 2551 const GLint b = xbuffer_to_renderbuffer(buffer); 2552 if (b < 0) 2553 return; 2554 2555 /* no-op for now */ 2556} 2557 2558