xm_api.c revision 5e448a8d4d1d6e8ad6430378c21c1332bc9b7588
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_sync 1322#define need_GL_ARB_vertex_program 1323#define need_GL_APPLE_vertex_array_object 1324#define need_GL_ATI_fragment_shader 1325#define need_GL_EXT_depth_bounds_test 1326#define need_GL_EXT_framebuffer_object 1327#define need_GL_EXT_framebuffer_blit 1328#define need_GL_EXT_gpu_program_parameters 1329#define need_GL_EXT_paletted_texture 1330#define need_GL_MESA_resize_buffers 1331#define need_GL_NV_vertex_program 1332#define need_GL_NV_fragment_program 1333 1334#include "extension_helper.h" 1335#include "utils.h" 1336 1337const struct dri_extension card_extensions[] = 1338{ 1339 { "GL_VERSION_1_3", GL_VERSION_1_3_functions }, 1340 { "GL_VERSION_1_4", GL_VERSION_1_4_functions }, 1341 { "GL_VERSION_1_5", GL_VERSION_1_5_functions }, 1342 { "GL_VERSION_2_0", GL_VERSION_2_0_functions }, 1343 1344 { "GL_EXT_blend_color", GL_EXT_blend_color_functions }, 1345 { "GL_EXT_blend_minmax", GL_EXT_blend_minmax_functions }, 1346 { "GL_EXT_convolution", GL_EXT_convolution_functions }, 1347 { "GL_EXT_histogram", GL_EXT_histogram_functions }, 1348 { "GL_SGI_color_table", GL_SGI_color_table_functions }, 1349 1350 { "GL_ARB_shader_objects", GL_ARB_shader_objects_functions }, 1351 { "GL_ARB_sync", GL_ARB_sync_functions }, 1352 { "GL_ARB_vertex_program", GL_ARB_vertex_program_functions }, 1353 { "GL_APPLE_vertex_array_object", GL_APPLE_vertex_array_object_functions }, 1354 { "GL_ATI_fragment_shader", GL_ATI_fragment_shader_functions }, 1355 { "GL_EXT_depth_bounds_test", GL_EXT_depth_bounds_test_functions }, 1356 { "GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions }, 1357 { "GL_EXT_framebuffer_blit", GL_EXT_framebuffer_blit_functions }, 1358 { "GL_EXT_gpu_program_parameters", GL_EXT_gpu_program_parameters_functions }, 1359 { "GL_EXT_paletted_texture", GL_EXT_paletted_texture_functions }, 1360 { "GL_MESA_resize_buffers", GL_MESA_resize_buffers_functions }, 1361 { "GL_NV_vertex_program", GL_NV_vertex_program_functions }, 1362 { "GL_NV_fragment_program", GL_NV_fragment_program_functions }, 1363 { NULL, NULL } 1364}; 1365#endif 1366 1367/* 1368 * Create a new X/Mesa visual. 1369 * Input: display - X11 display 1370 * visinfo - an XVisualInfo pointer 1371 * rgb_flag - GL_TRUE = RGB mode, 1372 * GL_FALSE = color index mode 1373 * alpha_flag - alpha buffer requested? 1374 * db_flag - GL_TRUE = double-buffered, 1375 * GL_FALSE = single buffered 1376 * stereo_flag - stereo visual? 1377 * ximage_flag - GL_TRUE = use an XImage for back buffer, 1378 * GL_FALSE = use an off-screen pixmap for back buffer 1379 * depth_size - requested bits/depth values, or zero 1380 * stencil_size - requested bits/stencil values, or zero 1381 * accum_red_size - requested bits/red accum values, or zero 1382 * accum_green_size - requested bits/green accum values, or zero 1383 * accum_blue_size - requested bits/blue accum values, or zero 1384 * accum_alpha_size - requested bits/alpha accum values, or zero 1385 * num_samples - number of samples/pixel if multisampling, or zero 1386 * level - visual level, usually 0 1387 * visualCaveat - ala the GLX extension, usually GLX_NONE 1388 * Return; a new XMesaVisual or 0 if error. 1389 */ 1390PUBLIC 1391XMesaVisual XMesaCreateVisual( XMesaDisplay *display, 1392 XMesaVisualInfo visinfo, 1393 GLboolean rgb_flag, 1394 GLboolean alpha_flag, 1395 GLboolean db_flag, 1396 GLboolean stereo_flag, 1397 GLboolean ximage_flag, 1398 GLint depth_size, 1399 GLint stencil_size, 1400 GLint accum_red_size, 1401 GLint accum_green_size, 1402 GLint accum_blue_size, 1403 GLint accum_alpha_size, 1404 GLint num_samples, 1405 GLint level, 1406 GLint visualCaveat ) 1407{ 1408 char *gamma; 1409 XMesaVisual v; 1410 GLint red_bits, green_bits, blue_bits, alpha_bits; 1411 1412#ifdef IN_DRI_DRIVER 1413 /* driInitExtensions() should be called once per screen to setup extension 1414 * indices. There is no need to call it when the context is created since 1415 * XMesa enables mesa sw extensions on its own. 1416 */ 1417 driInitExtensions( NULL, card_extensions, GL_FALSE ); 1418#endif 1419 1420#ifndef XFree86Server 1421 /* For debugging only */ 1422 if (_mesa_getenv("MESA_XSYNC")) { 1423 /* This makes debugging X easier. 1424 * In your debugger, set a breakpoint on _XError to stop when an 1425 * X protocol error is generated. 1426 */ 1427 XSynchronize( display, 1 ); 1428 } 1429#endif 1430 1431 v = (XMesaVisual) CALLOC_STRUCT(xmesa_visual); 1432 if (!v) { 1433 return NULL; 1434 } 1435 1436 v->display = display; 1437 1438 /* Save a copy of the XVisualInfo struct because the user may X_mesa_free() 1439 * the struct but we may need some of the information contained in it 1440 * at a later time. 1441 */ 1442#ifndef XFree86Server 1443 v->visinfo = (XVisualInfo *) MALLOC(sizeof(*visinfo)); 1444 if(!v->visinfo) { 1445 _mesa_free(v); 1446 return NULL; 1447 } 1448 MEMCPY(v->visinfo, visinfo, sizeof(*visinfo)); 1449#endif 1450 1451 /* check for MESA_GAMMA environment variable */ 1452 gamma = _mesa_getenv("MESA_GAMMA"); 1453 if (gamma) { 1454 v->RedGamma = v->GreenGamma = v->BlueGamma = 0.0; 1455 sscanf( gamma, "%f %f %f", &v->RedGamma, &v->GreenGamma, &v->BlueGamma ); 1456 if (v->RedGamma<=0.0) v->RedGamma = 1.0; 1457 if (v->GreenGamma<=0.0) v->GreenGamma = v->RedGamma; 1458 if (v->BlueGamma<=0.0) v->BlueGamma = v->RedGamma; 1459 } 1460 else { 1461 v->RedGamma = v->GreenGamma = v->BlueGamma = 1.0; 1462 } 1463 1464 v->ximage_flag = ximage_flag; 1465 1466#ifdef XFree86Server 1467 /* We could calculate these values by ourselves. nplanes is either the sum 1468 * of the red, green, and blue bits or the number index bits. 1469 * ColormapEntries is either (1U << index_bits) or 1470 * (1U << max(redBits, greenBits, blueBits)). 1471 */ 1472 assert(visinfo->nplanes > 0); 1473 v->nplanes = visinfo->nplanes; 1474 v->ColormapEntries = visinfo->ColormapEntries; 1475 1476 v->mesa_visual.redMask = visinfo->redMask; 1477 v->mesa_visual.greenMask = visinfo->greenMask; 1478 v->mesa_visual.blueMask = visinfo->blueMask; 1479 v->mesa_visual.visualID = visinfo->vid; 1480 v->mesa_visual.screen = 0; /* FIXME: What should be done here? */ 1481#else 1482 v->mesa_visual.redMask = visinfo->red_mask; 1483 v->mesa_visual.greenMask = visinfo->green_mask; 1484 v->mesa_visual.blueMask = visinfo->blue_mask; 1485 v->mesa_visual.visualID = visinfo->visualid; 1486 v->mesa_visual.screen = visinfo->screen; 1487#endif 1488 1489#if defined(XFree86Server) || !(defined(__cplusplus) || defined(c_plusplus)) 1490 v->mesa_visual.visualType = xmesa_convert_from_x_visual_type(visinfo->class); 1491#else 1492 v->mesa_visual.visualType = xmesa_convert_from_x_visual_type(visinfo->c_class); 1493#endif 1494 1495 v->mesa_visual.visualRating = visualCaveat; 1496 1497 if (alpha_flag) 1498 v->mesa_visual.alphaBits = 8; 1499 1500 (void) initialize_visual_and_buffer( v, NULL, rgb_flag, 0, 0 ); 1501 1502 { 1503 const int xclass = v->mesa_visual.visualType; 1504 if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) { 1505 red_bits = _mesa_bitcount(GET_REDMASK(v)); 1506 green_bits = _mesa_bitcount(GET_GREENMASK(v)); 1507 blue_bits = _mesa_bitcount(GET_BLUEMASK(v)); 1508 } 1509 else { 1510 /* this is an approximation */ 1511 int depth; 1512 depth = GET_VISUAL_DEPTH(v); 1513 red_bits = depth / 3; 1514 depth -= red_bits; 1515 green_bits = depth / 2; 1516 depth -= green_bits; 1517 blue_bits = depth; 1518 alpha_bits = 0; 1519 assert( red_bits + green_bits + blue_bits == GET_VISUAL_DEPTH(v) ); 1520 } 1521 alpha_bits = v->mesa_visual.alphaBits; 1522 } 1523 1524 _mesa_initialize_visual( &v->mesa_visual, 1525 rgb_flag, db_flag, stereo_flag, 1526 red_bits, green_bits, 1527 blue_bits, alpha_bits, 1528 v->mesa_visual.indexBits, 1529 depth_size, 1530 stencil_size, 1531 accum_red_size, accum_green_size, 1532 accum_blue_size, accum_alpha_size, 1533 0 ); 1534 1535 /* XXX minor hack */ 1536 v->mesa_visual.level = level; 1537 return v; 1538} 1539 1540 1541PUBLIC 1542void XMesaDestroyVisual( XMesaVisual v ) 1543{ 1544#ifndef XFree86Server 1545 _mesa_free(v->visinfo); 1546#endif 1547 _mesa_free(v); 1548} 1549 1550 1551 1552/** 1553 * Create a new XMesaContext. 1554 * \param v the XMesaVisual 1555 * \param share_list another XMesaContext with which to share display 1556 * lists or NULL if no sharing is wanted. 1557 * \return an XMesaContext or NULL if error. 1558 */ 1559PUBLIC 1560XMesaContext XMesaCreateContext( XMesaVisual v, XMesaContext share_list ) 1561{ 1562 static GLboolean firstTime = GL_TRUE; 1563 XMesaContext c; 1564 GLcontext *mesaCtx; 1565 struct dd_function_table functions; 1566 TNLcontext *tnl; 1567 1568 if (firstTime) { 1569 _glthread_INIT_MUTEX(_xmesa_lock); 1570 firstTime = GL_FALSE; 1571 } 1572 1573 /* Note: the XMesaContext contains a Mesa GLcontext struct (inheritance) */ 1574 c = (XMesaContext) CALLOC_STRUCT(xmesa_context); 1575 if (!c) 1576 return NULL; 1577 1578 mesaCtx = &(c->mesa); 1579 1580 /* initialize with default driver functions, then plug in XMesa funcs */ 1581 _mesa_init_driver_functions(&functions); 1582 xmesa_init_driver_functions(v, &functions); 1583 if (!_mesa_initialize_context(mesaCtx, &v->mesa_visual, 1584 share_list ? &(share_list->mesa) : (GLcontext *) NULL, 1585 &functions, (void *) c)) { 1586 _mesa_free(c); 1587 return NULL; 1588 } 1589 1590 /* Enable this to exercise fixed function -> shader translation 1591 * with software rendering. 1592 */ 1593 if (0) { 1594 mesaCtx->VertexProgram._MaintainTnlProgram = GL_TRUE; 1595 mesaCtx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE; 1596 } 1597 1598 _mesa_enable_sw_extensions(mesaCtx); 1599 _mesa_enable_1_3_extensions(mesaCtx); 1600 _mesa_enable_1_4_extensions(mesaCtx); 1601 _mesa_enable_1_5_extensions(mesaCtx); 1602 _mesa_enable_2_0_extensions(mesaCtx); 1603 _mesa_enable_2_1_extensions(mesaCtx); 1604#if ENABLE_EXT_texure_compression_s3tc 1605 if (mesaCtx->Mesa_DXTn) { 1606 _mesa_enable_extension(mesaCtx, "GL_EXT_texture_compression_s3tc"); 1607 _mesa_enable_extension(mesaCtx, "GL_S3_s3tc"); 1608 } 1609 _mesa_enable_extension(mesaCtx, "GL_3DFX_texture_compression_FXT1"); 1610#endif 1611#if ENABLE_EXT_timer_query 1612 _mesa_enable_extension(mesaCtx, "GL_EXT_timer_query"); 1613#endif 1614 1615#ifdef XFree86Server 1616 /* If we're running in the X server, do bounds checking to prevent 1617 * segfaults and server crashes! 1618 */ 1619 mesaCtx->Const.CheckArrayBounds = GL_TRUE; 1620#endif 1621 1622 /* finish up xmesa context initializations */ 1623 c->swapbytes = CHECK_BYTE_ORDER(v) ? GL_FALSE : GL_TRUE; 1624 c->xm_visual = v; 1625 c->xm_buffer = NULL; /* set later by XMesaMakeCurrent */ 1626 c->display = v->display; 1627 c->pixelformat = v->dithered_pf; /* Dithering is enabled by default */ 1628 1629 /* Initialize the software rasterizer and helper modules. 1630 */ 1631 if (!_swrast_CreateContext( mesaCtx ) || 1632 !_vbo_CreateContext( mesaCtx ) || 1633 !_tnl_CreateContext( mesaCtx ) || 1634 !_swsetup_CreateContext( mesaCtx )) { 1635 _mesa_free_context_data(&c->mesa); 1636 _mesa_free(c); 1637 return NULL; 1638 } 1639 1640 /* tnl setup */ 1641 tnl = TNL_CONTEXT(mesaCtx); 1642 tnl->Driver.RunPipeline = _tnl_run_pipeline; 1643 /* swrast setup */ 1644 xmesa_register_swrast_functions( mesaCtx ); 1645 _swsetup_Wakeup(mesaCtx); 1646 1647 if (TEST_META_FUNCS) 1648 _mesa_meta_init(mesaCtx); 1649 1650 return c; 1651} 1652 1653 1654 1655PUBLIC 1656void XMesaDestroyContext( XMesaContext c ) 1657{ 1658 GLcontext *mesaCtx = &c->mesa; 1659 1660#ifdef FX 1661 FXdestroyContext( XMESA_BUFFER(mesaCtx->DrawBuffer) ); 1662#endif 1663 1664 if (TEST_META_FUNCS) 1665 _mesa_meta_free( mesaCtx ); 1666 1667 _swsetup_DestroyContext( mesaCtx ); 1668 _swrast_DestroyContext( mesaCtx ); 1669 _tnl_DestroyContext( mesaCtx ); 1670 _vbo_DestroyContext( mesaCtx ); 1671 _mesa_free_context_data( mesaCtx ); 1672 _mesa_free( c ); 1673} 1674 1675 1676 1677/** 1678 * Private function for creating an XMesaBuffer which corresponds to an 1679 * X window or pixmap. 1680 * \param v the window's XMesaVisual 1681 * \param w the window we're wrapping 1682 * \return new XMesaBuffer or NULL if error 1683 */ 1684PUBLIC XMesaBuffer 1685XMesaCreateWindowBuffer(XMesaVisual v, XMesaWindow w) 1686{ 1687#ifndef XFree86Server 1688 XWindowAttributes attr; 1689#endif 1690 XMesaBuffer b; 1691 XMesaColormap cmap; 1692 int depth; 1693 1694 assert(v); 1695 assert(w); 1696 1697 /* Check that window depth matches visual depth */ 1698#ifdef XFree86Server 1699 depth = ((XMesaDrawable)w)->depth; 1700#else 1701 XGetWindowAttributes( v->display, w, &attr ); 1702 depth = attr.depth; 1703#endif 1704 if (GET_VISUAL_DEPTH(v) != depth) { 1705 _mesa_warning(NULL, "XMesaCreateWindowBuffer: depth mismatch between visual (%d) and window (%d)!\n", 1706 GET_VISUAL_DEPTH(v), depth); 1707 return NULL; 1708 } 1709 1710 /* Find colormap */ 1711#ifdef XFree86Server 1712 cmap = (ColormapPtr)LookupIDByType(wColormap(w), RT_COLORMAP); 1713#else 1714 if (attr.colormap) { 1715 cmap = attr.colormap; 1716 } 1717 else { 1718 _mesa_warning(NULL, "Window %u has no colormap!\n", (unsigned int) w); 1719 /* this is weird, a window w/out a colormap!? */ 1720 /* OK, let's just allocate a new one and hope for the best */ 1721 cmap = XCreateColormap(v->display, w, attr.visual, AllocNone); 1722 } 1723#endif 1724 1725 b = create_xmesa_buffer((XMesaDrawable) w, WINDOW, v, cmap); 1726 if (!b) 1727 return NULL; 1728 1729 if (!initialize_visual_and_buffer( v, b, v->mesa_visual.rgbMode, 1730 (XMesaDrawable) w, cmap )) { 1731 xmesa_free_buffer(b); 1732 return NULL; 1733 } 1734 1735 return b; 1736} 1737 1738 1739 1740/** 1741 * Create a new XMesaBuffer from an X pixmap. 1742 * 1743 * \param v the XMesaVisual 1744 * \param p the pixmap 1745 * \param cmap the colormap, may be 0 if using a \c GLX_TRUE_COLOR or 1746 * \c GLX_DIRECT_COLOR visual for the pixmap 1747 * \returns new XMesaBuffer or NULL if error 1748 */ 1749PUBLIC XMesaBuffer 1750XMesaCreatePixmapBuffer(XMesaVisual v, XMesaPixmap p, XMesaColormap cmap) 1751{ 1752 XMesaBuffer b; 1753 1754 assert(v); 1755 1756 b = create_xmesa_buffer((XMesaDrawable) p, PIXMAP, v, cmap); 1757 if (!b) 1758 return NULL; 1759 1760 if (!initialize_visual_and_buffer(v, b, v->mesa_visual.rgbMode, 1761 (XMesaDrawable) p, cmap)) { 1762 xmesa_free_buffer(b); 1763 return NULL; 1764 } 1765 1766 return b; 1767} 1768 1769 1770/** 1771 * For GLX_EXT_texture_from_pixmap 1772 */ 1773XMesaBuffer 1774XMesaCreatePixmapTextureBuffer(XMesaVisual v, XMesaPixmap p, 1775 XMesaColormap cmap, 1776 int format, int target, int mipmap) 1777{ 1778 GET_CURRENT_CONTEXT(ctx); 1779 XMesaBuffer b; 1780 GLuint width, height; 1781 1782 assert(v); 1783 1784 b = create_xmesa_buffer((XMesaDrawable) p, PIXMAP, v, cmap); 1785 if (!b) 1786 return NULL; 1787 1788 /* get pixmap size, update framebuffer/renderbuffer dims */ 1789 xmesa_get_window_size(v->display, b, &width, &height); 1790 _mesa_resize_framebuffer(NULL, &(b->mesa_buffer), width, height); 1791 1792 if (target == 0) { 1793 /* examine dims */ 1794 if (ctx->Extensions.ARB_texture_non_power_of_two) { 1795 target = GLX_TEXTURE_2D_EXT; 1796 } 1797 else if ( _mesa_bitcount(width) == 1 1798 && _mesa_bitcount(height) == 1) { 1799 /* power of two size */ 1800 if (height == 1) { 1801 target = GLX_TEXTURE_1D_EXT; 1802 } 1803 else { 1804 target = GLX_TEXTURE_2D_EXT; 1805 } 1806 } 1807 else if (ctx->Extensions.NV_texture_rectangle) { 1808 target = GLX_TEXTURE_RECTANGLE_EXT; 1809 } 1810 else { 1811 /* non power of two textures not supported */ 1812 XMesaDestroyBuffer(b); 1813 return 0; 1814 } 1815 } 1816 1817 b->TextureTarget = target; 1818 b->TextureFormat = format; 1819 b->TextureMipmap = mipmap; 1820 1821 if (!initialize_visual_and_buffer(v, b, v->mesa_visual.rgbMode, 1822 (XMesaDrawable) p, cmap)) { 1823 xmesa_free_buffer(b); 1824 return NULL; 1825 } 1826 1827 return b; 1828} 1829 1830 1831 1832XMesaBuffer 1833XMesaCreatePBuffer(XMesaVisual v, XMesaColormap cmap, 1834 unsigned int width, unsigned int height) 1835{ 1836#ifndef XFree86Server 1837 XMesaWindow root; 1838 XMesaDrawable drawable; /* X Pixmap Drawable */ 1839 XMesaBuffer b; 1840 1841 /* allocate pixmap for front buffer */ 1842 root = RootWindow( v->display, v->visinfo->screen ); 1843 drawable = XCreatePixmap(v->display, root, width, height, 1844 v->visinfo->depth); 1845 if (!drawable) 1846 return NULL; 1847 1848 b = create_xmesa_buffer(drawable, PBUFFER, v, cmap); 1849 if (!b) 1850 return NULL; 1851 1852 if (!initialize_visual_and_buffer(v, b, v->mesa_visual.rgbMode, 1853 drawable, cmap)) { 1854 xmesa_free_buffer(b); 1855 return NULL; 1856 } 1857 1858 return b; 1859#else 1860 return 0; 1861#endif 1862} 1863 1864 1865 1866/* 1867 * Deallocate an XMesaBuffer structure and all related info. 1868 */ 1869PUBLIC void 1870XMesaDestroyBuffer(XMesaBuffer b) 1871{ 1872 xmesa_free_buffer(b); 1873} 1874 1875 1876/** 1877 * Query the current window size and update the corresponding GLframebuffer 1878 * and all attached renderbuffers. 1879 * Called when: 1880 * 1. the first time a buffer is bound to a context. 1881 * 2. from glViewport to poll for window size changes 1882 * 3. from the XMesaResizeBuffers() API function. 1883 * Note: it's possible (and legal) for xmctx to be NULL. That can happen 1884 * when resizing a buffer when no rendering context is bound. 1885 */ 1886void 1887xmesa_check_and_update_buffer_size(XMesaContext xmctx, XMesaBuffer drawBuffer) 1888{ 1889 GLuint width, height; 1890 xmesa_get_window_size(drawBuffer->display, drawBuffer, &width, &height); 1891 if (drawBuffer->mesa_buffer.Width != width || 1892 drawBuffer->mesa_buffer.Height != height) { 1893 GLcontext *ctx = xmctx ? &xmctx->mesa : NULL; 1894 _mesa_resize_framebuffer(ctx, &(drawBuffer->mesa_buffer), width, height); 1895 } 1896 drawBuffer->mesa_buffer.Initialized = GL_TRUE; /* XXX TEMPORARY? */ 1897} 1898 1899 1900/* 1901 * Bind buffer b to context c and make c the current rendering context. 1902 */ 1903GLboolean XMesaMakeCurrent( XMesaContext c, XMesaBuffer b ) 1904{ 1905 return XMesaMakeCurrent2( c, b, b ); 1906} 1907 1908 1909/* 1910 * Bind buffer b to context c and make c the current rendering context. 1911 */ 1912PUBLIC 1913GLboolean XMesaMakeCurrent2( XMesaContext c, XMesaBuffer drawBuffer, 1914 XMesaBuffer readBuffer ) 1915{ 1916 if (c) { 1917 if (!drawBuffer || !readBuffer) 1918 return GL_FALSE; /* must specify buffers! */ 1919 1920 if (&(c->mesa) == _mesa_get_current_context() 1921 && c->mesa.DrawBuffer == &drawBuffer->mesa_buffer 1922 && c->mesa.ReadBuffer == &readBuffer->mesa_buffer 1923 && XMESA_BUFFER(c->mesa.DrawBuffer)->wasCurrent) { 1924 /* same context and buffer, do nothing */ 1925 return GL_TRUE; 1926 } 1927 1928 c->xm_buffer = drawBuffer; 1929 1930#ifdef FX 1931 if (FXmakeCurrent( drawBuffer )) 1932 return GL_TRUE; 1933#endif 1934 1935 /* Call this periodically to detect when the user has begun using 1936 * GL rendering from multiple threads. 1937 */ 1938 _glapi_check_multithread(); 1939 1940 xmesa_check_and_update_buffer_size(c, drawBuffer); 1941 if (readBuffer != drawBuffer) 1942 xmesa_check_and_update_buffer_size(c, readBuffer); 1943 1944 _mesa_make_current(&(c->mesa), 1945 &drawBuffer->mesa_buffer, 1946 &readBuffer->mesa_buffer); 1947 1948 if (c->xm_visual->mesa_visual.rgbMode) { 1949 /* 1950 * Must recompute and set these pixel values because colormap 1951 * can be different for different windows. 1952 */ 1953 c->clearpixel = xmesa_color_to_pixel( &c->mesa, 1954 c->clearcolor[0], 1955 c->clearcolor[1], 1956 c->clearcolor[2], 1957 c->clearcolor[3], 1958 c->xm_visual->undithered_pf); 1959 XMesaSetForeground(c->display, drawBuffer->cleargc, c->clearpixel); 1960 } 1961 1962 /* Solution to Stephane Rehel's problem with glXReleaseBuffersMESA(): */ 1963 drawBuffer->wasCurrent = GL_TRUE; 1964 } 1965 else { 1966 /* Detach */ 1967 _mesa_make_current( NULL, NULL, NULL ); 1968 } 1969 return GL_TRUE; 1970} 1971 1972 1973/* 1974 * Unbind the context c from its buffer. 1975 */ 1976GLboolean XMesaUnbindContext( XMesaContext c ) 1977{ 1978 /* A no-op for XFree86 integration purposes */ 1979 return GL_TRUE; 1980} 1981 1982 1983XMesaContext XMesaGetCurrentContext( void ) 1984{ 1985 GET_CURRENT_CONTEXT(ctx); 1986 if (ctx) { 1987 XMesaContext xmesa = XMESA_CONTEXT(ctx); 1988 return xmesa; 1989 } 1990 else { 1991 return 0; 1992 } 1993} 1994 1995 1996XMesaBuffer XMesaGetCurrentBuffer( void ) 1997{ 1998 GET_CURRENT_CONTEXT(ctx); 1999 if (ctx) { 2000 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); 2001 return xmbuf; 2002 } 2003 else { 2004 return 0; 2005 } 2006} 2007 2008 2009/* New in Mesa 3.1 */ 2010XMesaBuffer XMesaGetCurrentReadBuffer( void ) 2011{ 2012 GET_CURRENT_CONTEXT(ctx); 2013 if (ctx) { 2014 return XMESA_BUFFER(ctx->ReadBuffer); 2015 } 2016 else { 2017 return 0; 2018 } 2019} 2020 2021 2022#ifdef XFree86Server 2023PUBLIC 2024GLboolean XMesaForceCurrent(XMesaContext c) 2025{ 2026 if (c) { 2027 _glapi_set_dispatch(c->mesa.CurrentDispatch); 2028 2029 if (&(c->mesa) != _mesa_get_current_context()) { 2030 _mesa_make_current(&c->mesa, c->mesa.DrawBuffer, c->mesa.ReadBuffer); 2031 } 2032 } 2033 else { 2034 _mesa_make_current(NULL, NULL, NULL); 2035 } 2036 return GL_TRUE; 2037} 2038 2039 2040PUBLIC 2041GLboolean XMesaLoseCurrent(XMesaContext c) 2042{ 2043 (void) c; 2044 _mesa_make_current(NULL, NULL, NULL); 2045 return GL_TRUE; 2046} 2047 2048 2049PUBLIC 2050GLboolean XMesaCopyContext( XMesaContext xm_src, XMesaContext xm_dst, GLuint mask ) 2051{ 2052 _mesa_copy_context(&xm_src->mesa, &xm_dst->mesa, mask); 2053 return GL_TRUE; 2054} 2055#endif /* XFree86Server */ 2056 2057 2058#ifndef FX 2059GLboolean XMesaSetFXmode( GLint mode ) 2060{ 2061 (void) mode; 2062 return GL_FALSE; 2063} 2064#endif 2065 2066 2067 2068/* 2069 * Copy the back buffer to the front buffer. If there's no back buffer 2070 * this is a no-op. 2071 */ 2072PUBLIC 2073void XMesaSwapBuffers( XMesaBuffer b ) 2074{ 2075 GET_CURRENT_CONTEXT(ctx); 2076 2077 if (!b->backxrb) { 2078 /* single buffered */ 2079 return; 2080 } 2081 2082 /* If we're swapping the buffer associated with the current context 2083 * we have to flush any pending rendering commands first. 2084 */ 2085 if (ctx && ctx->DrawBuffer == &(b->mesa_buffer)) 2086 _mesa_notifySwapBuffers(ctx); 2087 2088 if (b->db_mode) { 2089#ifdef FX 2090 if (FXswapBuffers(b)) 2091 return; 2092#endif 2093 if (b->backxrb->ximage) { 2094 /* Copy Ximage (back buf) from client memory to server window */ 2095#if defined(USE_XSHM) && !defined(XFree86Server) 2096 if (b->shm) { 2097 /*_glthread_LOCK_MUTEX(_xmesa_lock);*/ 2098 XShmPutImage( b->xm_visual->display, b->frontxrb->drawable, 2099 b->swapgc, 2100 b->backxrb->ximage, 0, 0, 2101 0, 0, b->mesa_buffer.Width, b->mesa_buffer.Height, 2102 False ); 2103 /*_glthread_UNLOCK_MUTEX(_xmesa_lock);*/ 2104 } 2105 else 2106#endif 2107 { 2108 /*_glthread_LOCK_MUTEX(_xmesa_lock);*/ 2109 XMesaPutImage( b->xm_visual->display, b->frontxrb->drawable, 2110 b->swapgc, 2111 b->backxrb->ximage, 0, 0, 2112 0, 0, b->mesa_buffer.Width, b->mesa_buffer.Height ); 2113 /*_glthread_UNLOCK_MUTEX(_xmesa_lock);*/ 2114 } 2115 } 2116 else if (b->backxrb->pixmap) { 2117 /* Copy pixmap (back buf) to window (front buf) on server */ 2118 /*_glthread_LOCK_MUTEX(_xmesa_lock);*/ 2119 XMesaCopyArea( b->xm_visual->display, 2120 b->backxrb->pixmap, /* source drawable */ 2121 b->frontxrb->drawable, /* dest. drawable */ 2122 b->swapgc, 2123 0, 0, b->mesa_buffer.Width, b->mesa_buffer.Height, 2124 0, 0 /* dest region */ 2125 ); 2126 /*_glthread_UNLOCK_MUTEX(_xmesa_lock);*/ 2127 } 2128 2129 if (b->swAlpha) 2130 _mesa_copy_soft_alpha_renderbuffers(ctx, &b->mesa_buffer); 2131 } 2132#if !defined(XFree86Server) 2133 XSync( b->xm_visual->display, False ); 2134#endif 2135} 2136 2137 2138 2139/* 2140 * Copy sub-region of back buffer to front buffer 2141 */ 2142void XMesaCopySubBuffer( XMesaBuffer b, int x, int y, int width, int height ) 2143{ 2144 GET_CURRENT_CONTEXT(ctx); 2145 2146 /* If we're swapping the buffer associated with the current context 2147 * we have to flush any pending rendering commands first. 2148 */ 2149 if (ctx && ctx->DrawBuffer == &(b->mesa_buffer)) 2150 _mesa_notifySwapBuffers(ctx); 2151 2152 if (!b->backxrb) { 2153 /* single buffered */ 2154 return; 2155 } 2156 2157 if (b->db_mode) { 2158 int yTop = b->mesa_buffer.Height - y - height; 2159#ifdef FX 2160 if (FXswapBuffers(b)) 2161 return; 2162#endif 2163 if (b->backxrb->ximage) { 2164 /* Copy Ximage from host's memory to server's window */ 2165#if defined(USE_XSHM) && !defined(XFree86Server) 2166 if (b->shm) { 2167 /* XXX assuming width and height aren't too large! */ 2168 XShmPutImage( b->xm_visual->display, b->frontxrb->drawable, 2169 b->swapgc, 2170 b->backxrb->ximage, x, yTop, 2171 x, yTop, width, height, False ); 2172 /* wait for finished event??? */ 2173 } 2174 else 2175#endif 2176 { 2177 /* XXX assuming width and height aren't too large! */ 2178 XMesaPutImage( b->xm_visual->display, b->frontxrb->drawable, 2179 b->swapgc, 2180 b->backxrb->ximage, x, yTop, 2181 x, yTop, width, height ); 2182 } 2183 } 2184 else { 2185 /* Copy pixmap to window on server */ 2186 XMesaCopyArea( b->xm_visual->display, 2187 b->backxrb->pixmap, /* source drawable */ 2188 b->frontxrb->drawable, /* dest. drawable */ 2189 b->swapgc, 2190 x, yTop, width, height, /* source region */ 2191 x, yTop /* dest region */ 2192 ); 2193 } 2194 } 2195} 2196 2197 2198/* 2199 * Return a pointer to the XMesa backbuffer Pixmap or XImage. This function 2200 * is a way to get "under the hood" of X/Mesa so one can manipulate the 2201 * back buffer directly. 2202 * Output: pixmap - pointer to back buffer's Pixmap, or 0 2203 * ximage - pointer to back buffer's XImage, or NULL 2204 * Return: GL_TRUE = context is double buffered 2205 * GL_FALSE = context is single buffered 2206 */ 2207#ifndef XFree86Server 2208GLboolean XMesaGetBackBuffer( XMesaBuffer b, 2209 XMesaPixmap *pixmap, 2210 XMesaImage **ximage ) 2211{ 2212 if (b->db_mode) { 2213 if (pixmap) 2214 *pixmap = b->backxrb->pixmap; 2215 if (ximage) 2216 *ximage = b->backxrb->ximage; 2217 return GL_TRUE; 2218 } 2219 else { 2220 *pixmap = 0; 2221 *ximage = NULL; 2222 return GL_FALSE; 2223 } 2224} 2225#endif /* XFree86Server */ 2226 2227 2228/* 2229 * Return the depth buffer associated with an XMesaBuffer. 2230 * Input: b - the XMesa buffer handle 2231 * Output: width, height - size of buffer in pixels 2232 * bytesPerValue - bytes per depth value (2 or 4) 2233 * buffer - pointer to depth buffer values 2234 * Return: GL_TRUE or GL_FALSE to indicate success or failure. 2235 */ 2236GLboolean XMesaGetDepthBuffer( XMesaBuffer b, GLint *width, GLint *height, 2237 GLint *bytesPerValue, void **buffer ) 2238{ 2239 struct gl_renderbuffer *rb 2240 = b->mesa_buffer.Attachment[BUFFER_DEPTH].Renderbuffer; 2241 if (!rb || !rb->Data) { 2242 *width = 0; 2243 *height = 0; 2244 *bytesPerValue = 0; 2245 *buffer = 0; 2246 return GL_FALSE; 2247 } 2248 else { 2249 *width = b->mesa_buffer.Width; 2250 *height = b->mesa_buffer.Height; 2251 *bytesPerValue = b->mesa_buffer.Visual.depthBits <= 16 2252 ? sizeof(GLushort) : sizeof(GLuint); 2253 *buffer = rb->Data; 2254 return GL_TRUE; 2255 } 2256} 2257 2258 2259void XMesaFlush( XMesaContext c ) 2260{ 2261 if (c && c->xm_visual) { 2262#ifdef XFree86Server 2263 /* NOT_NEEDED */ 2264#else 2265 XSync( c->xm_visual->display, False ); 2266#endif 2267 } 2268} 2269 2270 2271 2272const char *XMesaGetString( XMesaContext c, int name ) 2273{ 2274 (void) c; 2275 if (name==XMESA_VERSION) { 2276 return "5.0"; 2277 } 2278 else if (name==XMESA_EXTENSIONS) { 2279 return ""; 2280 } 2281 else { 2282 return NULL; 2283 } 2284} 2285 2286 2287 2288XMesaBuffer XMesaFindBuffer( XMesaDisplay *dpy, XMesaDrawable d ) 2289{ 2290 XMesaBuffer b; 2291 for (b=XMesaBufferList; b; b=b->Next) { 2292 if (b->frontxrb->drawable == d && b->display == dpy) { 2293 return b; 2294 } 2295 } 2296 return NULL; 2297} 2298 2299 2300/** 2301 * Free/destroy all XMesaBuffers associated with given display. 2302 */ 2303void xmesa_destroy_buffers_on_display(XMesaDisplay *dpy) 2304{ 2305 XMesaBuffer b, next; 2306 for (b = XMesaBufferList; b; b = next) { 2307 next = b->Next; 2308 if (b->display == dpy) { 2309 xmesa_free_buffer(b); 2310 } 2311 } 2312} 2313 2314 2315/* 2316 * Look for XMesaBuffers whose X window has been destroyed. 2317 * Deallocate any such XMesaBuffers. 2318 */ 2319void XMesaGarbageCollect( void ) 2320{ 2321 XMesaBuffer b, next; 2322 for (b=XMesaBufferList; b; b=next) { 2323 next = b->Next; 2324 if (b->display && b->frontxrb->drawable && b->type == WINDOW) { 2325#ifdef XFree86Server 2326 /* NOT_NEEDED */ 2327#else 2328 XSync(b->display, False); 2329 if (!window_exists( b->display, b->frontxrb->drawable )) { 2330 /* found a dead window, free the ancillary info */ 2331 XMesaDestroyBuffer( b ); 2332 } 2333#endif 2334 } 2335 } 2336} 2337 2338 2339unsigned long XMesaDitherColor( XMesaContext xmesa, GLint x, GLint y, 2340 GLfloat red, GLfloat green, 2341 GLfloat blue, GLfloat alpha ) 2342{ 2343 GLcontext *ctx = &xmesa->mesa; 2344 GLint r = (GLint) (red * 255.0F); 2345 GLint g = (GLint) (green * 255.0F); 2346 GLint b = (GLint) (blue * 255.0F); 2347 GLint a = (GLint) (alpha * 255.0F); 2348 2349 switch (xmesa->pixelformat) { 2350 case PF_Index: 2351 return 0; 2352 case PF_Truecolor: 2353 { 2354 unsigned long p; 2355 PACK_TRUECOLOR( p, r, g, b ); 2356 return p; 2357 } 2358 case PF_8A8B8G8R: 2359 return PACK_8A8B8G8R( r, g, b, a ); 2360 case PF_8A8R8G8B: 2361 return PACK_8A8R8G8B( r, g, b, a ); 2362 case PF_8R8G8B: 2363 return PACK_8R8G8B( r, g, b ); 2364 case PF_5R6G5B: 2365 return PACK_5R6G5B( r, g, b ); 2366 case PF_Dither: 2367 { 2368 DITHER_SETUP; 2369 return DITHER( x, y, r, g, b ); 2370 } 2371 case PF_1Bit: 2372 /* 382 = (3*255)/2 */ 2373 return ((r+g+b) > 382) ^ xmesa->xm_visual->bitFlip; 2374 case PF_HPCR: 2375 return DITHER_HPCR(x, y, r, g, b); 2376 case PF_Lookup: 2377 { 2378 LOOKUP_SETUP; 2379 return LOOKUP( r, g, b ); 2380 } 2381 case PF_Grayscale: 2382 return GRAY_RGB( r, g, b ); 2383 case PF_Dither_5R6G5B: 2384 /* fall through */ 2385 case PF_Dither_True: 2386 { 2387 unsigned long p; 2388 PACK_TRUEDITHER(p, x, y, r, g, b); 2389 return p; 2390 } 2391 default: 2392 _mesa_problem(NULL, "Bad pixel format in XMesaDitherColor"); 2393 } 2394 return 0; 2395} 2396 2397 2398/* 2399 * This is typically called when the window size changes and we need 2400 * to reallocate the buffer's back/depth/stencil/accum buffers. 2401 */ 2402PUBLIC void 2403XMesaResizeBuffers( XMesaBuffer b ) 2404{ 2405 GET_CURRENT_CONTEXT(ctx); 2406 XMesaContext xmctx = XMESA_CONTEXT(ctx); 2407 if (!xmctx) 2408 return; 2409 xmesa_check_and_update_buffer_size(xmctx, b); 2410} 2411 2412 2413static GLint 2414xbuffer_to_renderbuffer(int buffer) 2415{ 2416 assert(MAX_AUX_BUFFERS <= 4); 2417 2418 switch (buffer) { 2419 case GLX_FRONT_LEFT_EXT: 2420 return BUFFER_FRONT_LEFT; 2421 case GLX_FRONT_RIGHT_EXT: 2422 return BUFFER_FRONT_RIGHT; 2423 case GLX_BACK_LEFT_EXT: 2424 return BUFFER_BACK_LEFT; 2425 case GLX_BACK_RIGHT_EXT: 2426 return BUFFER_BACK_RIGHT; 2427 case GLX_AUX0_EXT: 2428 return BUFFER_AUX0; 2429 case GLX_AUX1_EXT: 2430 case GLX_AUX2_EXT: 2431 case GLX_AUX3_EXT: 2432 case GLX_AUX4_EXT: 2433 case GLX_AUX5_EXT: 2434 case GLX_AUX6_EXT: 2435 case GLX_AUX7_EXT: 2436 case GLX_AUX8_EXT: 2437 case GLX_AUX9_EXT: 2438 default: 2439 /* BadValue error */ 2440 return -1; 2441 } 2442} 2443 2444 2445PUBLIC void 2446XMesaBindTexImage(XMesaDisplay *dpy, XMesaBuffer drawable, int buffer, 2447 const int *attrib_list) 2448{ 2449#if 0 2450 GET_CURRENT_CONTEXT(ctx); 2451 const GLuint unit = ctx->Texture.CurrentUnit; 2452 struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; 2453 struct gl_texture_object *texObj; 2454#endif 2455 struct gl_renderbuffer *rb; 2456 struct xmesa_renderbuffer *xrb; 2457 GLint b; 2458 XMesaImage *img = NULL; 2459 GLboolean freeImg = GL_FALSE; 2460 2461 b = xbuffer_to_renderbuffer(buffer); 2462 if (b < 0) 2463 return; 2464 2465 if (drawable->TextureFormat == GLX_TEXTURE_FORMAT_NONE_EXT) 2466 return; /* BadMatch error */ 2467 2468 rb = drawable->mesa_buffer.Attachment[b].Renderbuffer; 2469 if (!rb) { 2470 /* invalid buffer */ 2471 return; 2472 } 2473 xrb = xmesa_renderbuffer(rb); 2474 2475#if 0 2476 switch (drawable->TextureTarget) { 2477 case GLX_TEXTURE_1D_EXT: 2478 texObj = texUnit->CurrentTex[TEXTURE_1D_INDEX]; 2479 break; 2480 case GLX_TEXTURE_2D_EXT: 2481 texObj = texUnit->CurrentTex[TEXTURE_2D_INDEX]; 2482 break; 2483 case GLX_TEXTURE_RECTANGLE_EXT: 2484 texObj = texUnit->CurrentTex[TEXTURE_RECT_INDEX]; 2485 break; 2486 default: 2487 return; /* BadMatch error */ 2488 } 2489#endif 2490 2491 /* 2492 * The following is a quick and simple way to implement 2493 * BindTexImage. The better way is to write some new FetchTexel() 2494 * functions which would extract texels from XImages. We'd still 2495 * need to use GetImage when texturing from a Pixmap (front buffer) 2496 * but texturing from a back buffer (XImage) would avoid an image 2497 * copy. 2498 */ 2499 2500 /* get XImage */ 2501 if (xrb->pixmap) { 2502 img = XMesaGetImage(dpy, xrb->pixmap, 0, 0, rb->Width, rb->Height, ~0L, 2503 ZPixmap); 2504 freeImg = GL_TRUE; 2505 } 2506 else if (xrb->ximage) { 2507 img = xrb->ximage; 2508 } 2509 2510 /* store the XImage as a new texture image */ 2511 if (img) { 2512 GLenum format, type, intFormat; 2513 if (img->bits_per_pixel == 32) { 2514 format = GL_BGRA; 2515 type = GL_UNSIGNED_BYTE; 2516 intFormat = GL_RGBA; 2517 } 2518 else if (img->bits_per_pixel == 24) { 2519 format = GL_BGR; 2520 type = GL_UNSIGNED_BYTE; 2521 intFormat = GL_RGB; 2522 } 2523 else if (img->bits_per_pixel == 16) { 2524 format = GL_BGR; 2525 type = GL_UNSIGNED_SHORT_5_6_5; 2526 intFormat = GL_RGB; 2527 } 2528 else { 2529 _mesa_problem(NULL, "Unexpected XImage format in XMesaBindTexImage"); 2530 return; 2531 } 2532 if (drawable->TextureFormat == GLX_TEXTURE_FORMAT_RGBA_EXT) { 2533 intFormat = GL_RGBA; 2534 } 2535 else if (drawable->TextureFormat == GLX_TEXTURE_FORMAT_RGB_EXT) { 2536 intFormat = GL_RGB; 2537 } 2538 2539 _mesa_TexImage2D(GL_TEXTURE_2D, 0, intFormat, rb->Width, rb->Height, 0, 2540 format, type, img->data); 2541 2542 if (freeImg) { 2543 XMesaDestroyImage(img); 2544 } 2545 } 2546} 2547 2548 2549 2550PUBLIC void 2551XMesaReleaseTexImage(XMesaDisplay *dpy, XMesaBuffer drawable, int buffer) 2552{ 2553 const GLint b = xbuffer_to_renderbuffer(buffer); 2554 if (b < 0) 2555 return; 2556 2557 /* no-op for now */ 2558} 2559 2560