1 /* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included 14 * in all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * 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 * 39 * Byte swapping: If the Mesa host and the X display use a different 40 * byte order then there's some trickiness to be aware of when using 41 * XImages. The byte ordering used for the XImage is that of the X 42 * display, not the Mesa host. 43 * The color-to-pixel encoding for True/DirectColor must be done 44 * according to the display's visual red_mask, green_mask, and blue_mask. 45 * If XPutPixel is used to put a pixel into an XImage then XPutPixel will 46 * do byte swapping if needed. If one wants to directly "poke" the pixel 47 * into the XImage's buffer then the pixel must be byte swapped first. 48 * 49 */ 50 51 #ifdef __CYGWIN__ 52 #undef WIN32 53 #undef __WIN32__ 54 #endif 55 56 #include <stdio.h> 57 #include "xm_api.h" 58 #include "xm_st.h" 59 60 #include "pipe/p_context.h" 61 #include "pipe/p_defines.h" 62 #include "pipe/p_screen.h" 63 #include "pipe/p_state.h" 64 65 #include "util/u_atomic.h" 66 #include "util/u_inlines.h" 67 68 #include "hud/hud_context.h" 69 70 #include "xm_public.h" 71 #include <GL/glx.h> 72 73 74 /* Driver interface routines, set up by xlib backend on library 75 * _init(). These are global in the same way that function names are 76 * global. 77 */ 78 static struct xm_driver driver; 79 static struct st_api *stapi; 80 81 /* Default strict invalidate to false. This means we will not call 82 * XGetGeometry after every swapbuffers, which allows swapbuffers to 83 * remain asynchronous. For apps running at 100fps with synchronous 84 * swapping, a 10% boost is typical. For gears, I see closer to 20% 85 * speedup. 86 * 87 * Note that the work of copying data on swapbuffers doesn't disappear 88 * - this change just allows the X server to execute the PutImage 89 * asynchronously without us effectively blocked until its completion. 90 * 91 * This speeds up even llvmpipe's threaded rasterization as the 92 * swapbuffers operation was a large part of the serial component of 93 * an llvmpipe frame. 94 * 95 * The downside of this is correctness - applications which don't call 96 * glViewport on window resizes will get incorrect rendering. A 97 * better solution would be to have per-frame but asynchronous 98 * invalidation. Xcb almost looks as if it could provide this, but 99 * the API doesn't seem to quite be there. 100 */ 101 boolean xmesa_strict_invalidate = FALSE; 102 103 void xmesa_set_driver( const struct xm_driver *templ ) 104 { 105 driver = *templ; 106 stapi = driver.create_st_api(); 107 108 xmesa_strict_invalidate = 109 debug_get_bool_option("XMESA_STRICT_INVALIDATE", FALSE); 110 } 111 112 113 static int 114 xmesa_get_param(struct st_manager *smapi, 115 enum st_manager_param param) 116 { 117 switch(param) { 118 case ST_MANAGER_BROKEN_INVALIDATE: 119 return !xmesa_strict_invalidate; 120 default: 121 return 0; 122 } 123 } 124 125 /* linked list of XMesaDisplay hooks per display */ 126 typedef struct _XMesaExtDisplayInfo { 127 struct _XMesaExtDisplayInfo *next; 128 Display *display; 129 struct xmesa_display mesaDisplay; 130 } XMesaExtDisplayInfo; 131 132 typedef struct _XMesaExtInfo { 133 XMesaExtDisplayInfo *head; 134 int ndisplays; 135 } XMesaExtInfo; 136 137 static XMesaExtInfo MesaExtInfo; 138 139 /* hook to delete XMesaDisplay on XDestroyDisplay */ 140 extern void 141 xmesa_close_display(Display *display) 142 { 143 XMesaExtDisplayInfo *info, *prev; 144 145 /* These assertions are not valid since screen creation can fail and result 146 * in an empty list 147 assert(MesaExtInfo.ndisplays > 0); 148 assert(MesaExtInfo.head); 149 */ 150 151 _XLockMutex(_Xglobal_lock); 152 /* first find display */ 153 prev = NULL; 154 for (info = MesaExtInfo.head; info; info = info->next) { 155 if (info->display == display) { 156 prev = info; 157 break; 158 } 159 } 160 161 if (info == NULL) { 162 /* no display found */ 163 _XUnlockMutex(_Xglobal_lock); 164 return; 165 } 166 167 /* remove display entry from list */ 168 if (prev != MesaExtInfo.head) { 169 prev->next = info->next; 170 } else { 171 MesaExtInfo.head = info->next; 172 } 173 MesaExtInfo.ndisplays--; 174 175 _XUnlockMutex(_Xglobal_lock); 176 177 /* don't forget to clean up mesaDisplay */ 178 XMesaDisplay xmdpy = &info->mesaDisplay; 179 180 /** 181 * XXX: Don't destroy the screens here, since there may still 182 * be some dangling screen pointers that are used after this point 183 * if (xmdpy->screen) { 184 * xmdpy->screen->destroy(xmdpy->screen); 185 * } 186 */ 187 188 if (xmdpy->smapi->destroy) 189 xmdpy->smapi->destroy(xmdpy->smapi); 190 free(xmdpy->smapi); 191 192 XFree((char *) info); 193 } 194 195 static XMesaDisplay 196 xmesa_init_display( Display *display ) 197 { 198 static mtx_t init_mutex = _MTX_INITIALIZER_NP; 199 XMesaDisplay xmdpy; 200 XMesaExtDisplayInfo *info; 201 202 if (display == NULL) { 203 return NULL; 204 } 205 206 mtx_lock(&init_mutex); 207 208 /* Look for XMesaDisplay which corresponds to this display */ 209 info = MesaExtInfo.head; 210 while(info) { 211 if (info->display == display) { 212 /* Found it */ 213 mtx_unlock(&init_mutex); 214 return &info->mesaDisplay; 215 } 216 info = info->next; 217 } 218 219 /* Not found. Create new XMesaDisplay */ 220 /* first allocate X-related resources and hook destroy callback */ 221 222 /* allocate mesa display info */ 223 info = (XMesaExtDisplayInfo *) Xmalloc(sizeof(XMesaExtDisplayInfo)); 224 if (info == NULL) { 225 mtx_unlock(&init_mutex); 226 return NULL; 227 } 228 info->display = display; 229 230 xmdpy = &info->mesaDisplay; /* to be filled out below */ 231 xmdpy->display = display; 232 xmdpy->pipe = NULL; 233 234 xmdpy->smapi = CALLOC_STRUCT(st_manager); 235 if (!xmdpy->smapi) { 236 Xfree(info); 237 mtx_unlock(&init_mutex); 238 return NULL; 239 } 240 241 xmdpy->screen = driver.create_pipe_screen(display); 242 if (!xmdpy->screen) { 243 free(xmdpy->smapi); 244 Xfree(info); 245 mtx_unlock(&init_mutex); 246 return NULL; 247 } 248 249 /* At this point, both smapi and screen are known to be valid */ 250 xmdpy->smapi->screen = xmdpy->screen; 251 xmdpy->smapi->get_param = xmesa_get_param; 252 (void) mtx_init(&xmdpy->mutex, mtx_plain); 253 254 /* chain to the list of displays */ 255 _XLockMutex(_Xglobal_lock); 256 info->next = MesaExtInfo.head; 257 MesaExtInfo.head = info; 258 MesaExtInfo.ndisplays++; 259 _XUnlockMutex(_Xglobal_lock); 260 261 mtx_unlock(&init_mutex); 262 263 return xmdpy; 264 } 265 266 267 /**********************************************************************/ 268 /***** X Utility Functions *****/ 269 /**********************************************************************/ 270 271 272 /** 273 * Return the host's byte order as LSBFirst or MSBFirst ala X. 274 */ 275 static int host_byte_order( void ) 276 { 277 int i = 1; 278 char *cptr = (char *) &i; 279 return (*cptr==1) ? LSBFirst : MSBFirst; 280 } 281 282 283 284 285 /** 286 * Return the true number of bits per pixel for XImages. 287 * For example, if we request a 24-bit deep visual we may actually need/get 288 * 32bpp XImages. This function returns the appropriate bpp. 289 * Input: dpy - the X display 290 * visinfo - desribes the visual to be used for XImages 291 * Return: true number of bits per pixel for XImages 292 */ 293 static int 294 bits_per_pixel( XMesaVisual xmv ) 295 { 296 Display *dpy = xmv->display; 297 XVisualInfo * visinfo = xmv->visinfo; 298 XImage *img; 299 int bitsPerPixel; 300 /* Create a temporary XImage */ 301 img = XCreateImage( dpy, visinfo->visual, visinfo->depth, 302 ZPixmap, 0, /*format, offset*/ 303 malloc(8), /*data*/ 304 1, 1, /*width, height*/ 305 32, /*bitmap_pad*/ 306 0 /*bytes_per_line*/ 307 ); 308 assert(img); 309 /* grab the bits/pixel value */ 310 bitsPerPixel = img->bits_per_pixel; 311 /* free the XImage */ 312 free( img->data ); 313 img->data = NULL; 314 XDestroyImage( img ); 315 return bitsPerPixel; 316 } 317 318 319 320 /* 321 * Determine if a given X window ID is valid (window exists). 322 * Do this by calling XGetWindowAttributes() for the window and 323 * checking if we catch an X error. 324 * Input: dpy - the display 325 * win - the window to check for existence 326 * Return: GL_TRUE - window exists 327 * GL_FALSE - window doesn't exist 328 */ 329 static GLboolean WindowExistsFlag; 330 331 static int window_exists_err_handler( Display* dpy, XErrorEvent* xerr ) 332 { 333 (void) dpy; 334 if (xerr->error_code == BadWindow) { 335 WindowExistsFlag = GL_FALSE; 336 } 337 return 0; 338 } 339 340 static GLboolean window_exists( Display *dpy, Window win ) 341 { 342 XWindowAttributes wa; 343 int (*old_handler)( Display*, XErrorEvent* ); 344 WindowExistsFlag = GL_TRUE; 345 old_handler = XSetErrorHandler(window_exists_err_handler); 346 XGetWindowAttributes( dpy, win, &wa ); /* dummy request */ 347 XSetErrorHandler(old_handler); 348 return WindowExistsFlag; 349 } 350 351 static Status 352 get_drawable_size( Display *dpy, Drawable d, uint *width, uint *height ) 353 { 354 Window root; 355 Status stat; 356 int xpos, ypos; 357 unsigned int w, h, bw, depth; 358 stat = XGetGeometry(dpy, d, &root, &xpos, &ypos, &w, &h, &bw, &depth); 359 *width = w; 360 *height = h; 361 return stat; 362 } 363 364 365 /** 366 * Return the size of the window (or pixmap) that corresponds to the 367 * given XMesaBuffer. 368 * \param width returns width in pixels 369 * \param height returns height in pixels 370 */ 371 void 372 xmesa_get_window_size(Display *dpy, XMesaBuffer b, 373 GLuint *width, GLuint *height) 374 { 375 XMesaDisplay xmdpy = xmesa_init_display(dpy); 376 Status stat; 377 378 mtx_lock(&xmdpy->mutex); 379 stat = get_drawable_size(dpy, b->ws.drawable, width, height); 380 mtx_unlock(&xmdpy->mutex); 381 382 if (!stat) { 383 /* probably querying a window that's recently been destroyed */ 384 _mesa_warning(NULL, "XGetGeometry failed!\n"); 385 *width = *height = 1; 386 } 387 } 388 389 #define GET_REDMASK(__v) __v->mesa_visual.redMask 390 #define GET_GREENMASK(__v) __v->mesa_visual.greenMask 391 #define GET_BLUEMASK(__v) __v->mesa_visual.blueMask 392 393 394 /** 395 * Choose the pixel format for the given visual. 396 * This will tell the gallium driver how to pack pixel data into 397 * drawing surfaces. 398 */ 399 static GLuint 400 choose_pixel_format(XMesaVisual v) 401 { 402 boolean native_byte_order = (host_byte_order() == 403 ImageByteOrder(v->display)); 404 405 if ( GET_REDMASK(v) == 0x0000ff 406 && GET_GREENMASK(v) == 0x00ff00 407 && GET_BLUEMASK(v) == 0xff0000 408 && v->BitsPerPixel == 32) { 409 if (native_byte_order) { 410 /* no byteswapping needed */ 411 return PIPE_FORMAT_RGBA8888_UNORM; 412 } 413 else { 414 return PIPE_FORMAT_ABGR8888_UNORM; 415 } 416 } 417 else if ( GET_REDMASK(v) == 0xff0000 418 && GET_GREENMASK(v) == 0x00ff00 419 && GET_BLUEMASK(v) == 0x0000ff 420 && v->BitsPerPixel == 32) { 421 if (native_byte_order) { 422 /* no byteswapping needed */ 423 return PIPE_FORMAT_BGRA8888_UNORM; 424 } 425 else { 426 return PIPE_FORMAT_ARGB8888_UNORM; 427 } 428 } 429 else if ( GET_REDMASK(v) == 0x0000ff00 430 && GET_GREENMASK(v) == 0x00ff0000 431 && GET_BLUEMASK(v) == 0xff000000 432 && v->BitsPerPixel == 32) { 433 if (native_byte_order) { 434 /* no byteswapping needed */ 435 return PIPE_FORMAT_ARGB8888_UNORM; 436 } 437 else { 438 return PIPE_FORMAT_BGRA8888_UNORM; 439 } 440 } 441 else if ( GET_REDMASK(v) == 0xf800 442 && GET_GREENMASK(v) == 0x07e0 443 && GET_BLUEMASK(v) == 0x001f 444 && native_byte_order 445 && v->BitsPerPixel == 16) { 446 /* 5-6-5 RGB */ 447 return PIPE_FORMAT_B5G6R5_UNORM; 448 } 449 450 return PIPE_FORMAT_NONE; 451 } 452 453 454 /** 455 * Choose a depth/stencil format that satisfies the given depth and 456 * stencil sizes. 457 */ 458 static enum pipe_format 459 choose_depth_stencil_format(XMesaDisplay xmdpy, int depth, int stencil, 460 int sample_count) 461 { 462 const enum pipe_texture_target target = PIPE_TEXTURE_2D; 463 const unsigned tex_usage = PIPE_BIND_DEPTH_STENCIL; 464 enum pipe_format formats[8], fmt; 465 int count, i; 466 467 count = 0; 468 469 if (depth <= 16 && stencil == 0) { 470 formats[count++] = PIPE_FORMAT_Z16_UNORM; 471 } 472 if (depth <= 24 && stencil == 0) { 473 formats[count++] = PIPE_FORMAT_X8Z24_UNORM; 474 formats[count++] = PIPE_FORMAT_Z24X8_UNORM; 475 } 476 if (depth <= 24 && stencil <= 8) { 477 formats[count++] = PIPE_FORMAT_S8_UINT_Z24_UNORM; 478 formats[count++] = PIPE_FORMAT_Z24_UNORM_S8_UINT; 479 } 480 if (depth <= 32 && stencil == 0) { 481 formats[count++] = PIPE_FORMAT_Z32_UNORM; 482 } 483 484 fmt = PIPE_FORMAT_NONE; 485 for (i = 0; i < count; i++) { 486 if (xmdpy->screen->is_format_supported(xmdpy->screen, formats[i], 487 target, sample_count, 488 tex_usage)) { 489 fmt = formats[i]; 490 break; 491 } 492 } 493 494 return fmt; 495 } 496 497 498 499 /**********************************************************************/ 500 /***** Linked list of XMesaBuffers *****/ 501 /**********************************************************************/ 502 503 static XMesaBuffer XMesaBufferList = NULL; 504 505 506 /** 507 * Allocate a new XMesaBuffer object which corresponds to the given drawable. 508 * Note that XMesaBuffer is derived from struct gl_framebuffer. 509 * The new XMesaBuffer will not have any size (Width=Height=0). 510 * 511 * \param d the corresponding X drawable (window or pixmap) 512 * \param type either WINDOW, PIXMAP or PBUFFER, describing d 513 * \param vis the buffer's visual 514 * \param cmap the window's colormap, if known. 515 * \return new XMesaBuffer or NULL if any problem 516 */ 517 static XMesaBuffer 518 create_xmesa_buffer(Drawable d, BufferType type, 519 XMesaVisual vis, Colormap cmap) 520 { 521 XMesaDisplay xmdpy = xmesa_init_display(vis->display); 522 XMesaBuffer b; 523 524 assert(type == WINDOW || type == PIXMAP || type == PBUFFER); 525 526 if (!xmdpy) 527 return NULL; 528 529 b = (XMesaBuffer) CALLOC_STRUCT(xmesa_buffer); 530 if (!b) 531 return NULL; 532 533 b->ws.drawable = d; 534 b->ws.visual = vis->visinfo->visual; 535 b->ws.depth = vis->visinfo->depth; 536 537 b->xm_visual = vis; 538 b->type = type; 539 b->cmap = cmap; 540 541 get_drawable_size(vis->display, d, &b->width, &b->height); 542 543 /* 544 * Create framebuffer, but we'll plug in our own renderbuffers below. 545 */ 546 b->stfb = xmesa_create_st_framebuffer(xmdpy, b); 547 548 /* GLX_EXT_texture_from_pixmap */ 549 b->TextureTarget = 0; 550 b->TextureFormat = GLX_TEXTURE_FORMAT_NONE_EXT; 551 b->TextureMipmap = 0; 552 553 /* insert buffer into linked list */ 554 b->Next = XMesaBufferList; 555 XMesaBufferList = b; 556 557 return b; 558 } 559 560 561 /** 562 * Find an XMesaBuffer by matching X display and colormap but NOT matching 563 * the notThis buffer. 564 */ 565 XMesaBuffer 566 xmesa_find_buffer(Display *dpy, Colormap cmap, XMesaBuffer notThis) 567 { 568 XMesaBuffer b; 569 for (b = XMesaBufferList; b; b = b->Next) { 570 if (b->xm_visual->display == dpy && 571 b->cmap == cmap && 572 b != notThis) { 573 return b; 574 } 575 } 576 return NULL; 577 } 578 579 580 /** 581 * Remove buffer from linked list, delete if no longer referenced. 582 */ 583 static void 584 xmesa_free_buffer(XMesaBuffer buffer) 585 { 586 XMesaBuffer prev = NULL, b; 587 588 for (b = XMesaBufferList; b; b = b->Next) { 589 if (b == buffer) { 590 /* unlink buffer from list */ 591 if (prev) 592 prev->Next = buffer->Next; 593 else 594 XMesaBufferList = buffer->Next; 595 596 /* Since the X window for the XMesaBuffer is going away, we don't 597 * want to dereference this pointer in the future. 598 */ 599 b->ws.drawable = 0; 600 601 /* Notify the st manager that the associated framebuffer interface 602 * object is no longer valid. 603 */ 604 stapi->destroy_drawable(stapi, buffer->stfb); 605 606 /* XXX we should move the buffer to a delete-pending list and destroy 607 * the buffer until it is no longer current. 608 */ 609 xmesa_destroy_st_framebuffer(buffer->stfb); 610 611 free(buffer); 612 613 return; 614 } 615 /* continue search */ 616 prev = b; 617 } 618 /* buffer not found in XMesaBufferList */ 619 _mesa_problem(NULL,"xmesa_free_buffer() - buffer not found\n"); 620 } 621 622 623 624 /**********************************************************************/ 625 /***** Misc Private Functions *****/ 626 /**********************************************************************/ 627 628 629 /** 630 * When a context is bound for the first time, we can finally finish 631 * initializing the context's visual and buffer information. 632 * \param v the XMesaVisual to initialize 633 * \param b the XMesaBuffer to initialize (may be NULL) 634 * \param rgb_flag TRUE = RGBA mode, FALSE = color index mode 635 * \param window the window/pixmap we're rendering into 636 * \param cmap the colormap associated with the window/pixmap 637 * \return GL_TRUE=success, GL_FALSE=failure 638 */ 639 static GLboolean 640 initialize_visual_and_buffer(XMesaVisual v, XMesaBuffer b, 641 GLboolean rgb_flag, Drawable window, 642 Colormap cmap) 643 { 644 assert(!b || b->xm_visual == v); 645 646 /* Save true bits/pixel */ 647 v->BitsPerPixel = bits_per_pixel(v); 648 assert(v->BitsPerPixel > 0); 649 650 if (rgb_flag == GL_FALSE) { 651 /* COLOR-INDEXED WINDOW: not supported*/ 652 return GL_FALSE; 653 } 654 else { 655 /* RGB WINDOW: 656 * We support RGB rendering into almost any kind of visual. 657 */ 658 const int xclass = v->visualType; 659 if (xclass != GLX_TRUE_COLOR && xclass == !GLX_DIRECT_COLOR) { 660 _mesa_warning(NULL, 661 "XMesa: RGB mode rendering not supported in given visual.\n"); 662 return GL_FALSE; 663 } 664 v->mesa_visual.indexBits = 0; 665 666 if (v->BitsPerPixel == 32) { 667 /* We use XImages for all front/back buffers. If an X Window or 668 * X Pixmap is 32bpp, there's no guarantee that the alpha channel 669 * will be preserved. For XImages we're in luck. 670 */ 671 v->mesa_visual.alphaBits = 8; 672 } 673 } 674 675 /* 676 * If MESA_INFO env var is set print out some debugging info 677 * which can help Brian figure out what's going on when a user 678 * reports bugs. 679 */ 680 if (getenv("MESA_INFO")) { 681 printf("X/Mesa visual = %p\n", (void *) v); 682 printf("X/Mesa level = %d\n", v->mesa_visual.level); 683 printf("X/Mesa depth = %d\n", v->visinfo->depth); 684 printf("X/Mesa bits per pixel = %d\n", v->BitsPerPixel); 685 } 686 687 return GL_TRUE; 688 } 689 690 691 692 #define NUM_VISUAL_TYPES 6 693 694 /** 695 * Convert an X visual type to a GLX visual type. 696 * 697 * \param visualType X visual type (i.e., \c TrueColor, \c StaticGray, etc.) 698 * to be converted. 699 * \return If \c visualType is a valid X visual type, a GLX visual type will 700 * be returned. Otherwise \c GLX_NONE will be returned. 701 * 702 * \note 703 * This code was lifted directly from lib/GL/glx/glcontextmodes.c in the 704 * DRI CVS tree. 705 */ 706 static GLint 707 xmesa_convert_from_x_visual_type( int visualType ) 708 { 709 static const int glx_visual_types[ NUM_VISUAL_TYPES ] = { 710 GLX_STATIC_GRAY, GLX_GRAY_SCALE, 711 GLX_STATIC_COLOR, GLX_PSEUDO_COLOR, 712 GLX_TRUE_COLOR, GLX_DIRECT_COLOR 713 }; 714 715 return ( (unsigned) visualType < NUM_VISUAL_TYPES ) 716 ? glx_visual_types[ visualType ] : GLX_NONE; 717 } 718 719 720 /**********************************************************************/ 721 /***** Public Functions *****/ 722 /**********************************************************************/ 723 724 725 /* 726 * Create a new X/Mesa visual. 727 * Input: display - X11 display 728 * visinfo - an XVisualInfo pointer 729 * rgb_flag - GL_TRUE = RGB mode, 730 * GL_FALSE = color index mode 731 * alpha_flag - alpha buffer requested? 732 * db_flag - GL_TRUE = double-buffered, 733 * GL_FALSE = single buffered 734 * stereo_flag - stereo visual? 735 * ximage_flag - GL_TRUE = use an XImage for back buffer, 736 * GL_FALSE = use an off-screen pixmap for back buffer 737 * depth_size - requested bits/depth values, or zero 738 * stencil_size - requested bits/stencil values, or zero 739 * accum_red_size - requested bits/red accum values, or zero 740 * accum_green_size - requested bits/green accum values, or zero 741 * accum_blue_size - requested bits/blue accum values, or zero 742 * accum_alpha_size - requested bits/alpha accum values, or zero 743 * num_samples - number of samples/pixel if multisampling, or zero 744 * level - visual level, usually 0 745 * visualCaveat - ala the GLX extension, usually GLX_NONE 746 * Return; a new XMesaVisual or 0 if error. 747 */ 748 PUBLIC 749 XMesaVisual XMesaCreateVisual( Display *display, 750 XVisualInfo * visinfo, 751 GLboolean rgb_flag, 752 GLboolean alpha_flag, 753 GLboolean db_flag, 754 GLboolean stereo_flag, 755 GLboolean ximage_flag, 756 GLint depth_size, 757 GLint stencil_size, 758 GLint accum_red_size, 759 GLint accum_green_size, 760 GLint accum_blue_size, 761 GLint accum_alpha_size, 762 GLint num_samples, 763 GLint level, 764 GLint visualCaveat ) 765 { 766 XMesaDisplay xmdpy = xmesa_init_display(display); 767 XMesaVisual v; 768 GLint red_bits, green_bits, blue_bits, alpha_bits; 769 770 if (!xmdpy) 771 return NULL; 772 773 /* For debugging only */ 774 if (getenv("MESA_XSYNC")) { 775 /* This makes debugging X easier. 776 * In your debugger, set a breakpoint on _XError to stop when an 777 * X protocol error is generated. 778 */ 779 XSynchronize( display, 1 ); 780 } 781 782 v = (XMesaVisual) CALLOC_STRUCT(xmesa_visual); 783 if (!v) { 784 return NULL; 785 } 786 787 v->display = display; 788 789 /* Save a copy of the XVisualInfo struct because the user may Xfree() 790 * the struct but we may need some of the information contained in it 791 * at a later time. 792 */ 793 v->visinfo = malloc(sizeof(*visinfo)); 794 if (!v->visinfo) { 795 free(v); 796 return NULL; 797 } 798 memcpy(v->visinfo, visinfo, sizeof(*visinfo)); 799 800 v->ximage_flag = ximage_flag; 801 802 v->mesa_visual.redMask = visinfo->red_mask; 803 v->mesa_visual.greenMask = visinfo->green_mask; 804 v->mesa_visual.blueMask = visinfo->blue_mask; 805 v->visualID = visinfo->visualid; 806 v->screen = visinfo->screen; 807 808 #if !(defined(__cplusplus) || defined(c_plusplus)) 809 v->visualType = xmesa_convert_from_x_visual_type(visinfo->class); 810 #else 811 v->visualType = xmesa_convert_from_x_visual_type(visinfo->c_class); 812 #endif 813 814 v->mesa_visual.visualRating = visualCaveat; 815 816 if (alpha_flag) 817 v->mesa_visual.alphaBits = 8; 818 819 (void) initialize_visual_and_buffer( v, NULL, rgb_flag, 0, 0 ); 820 821 { 822 const int xclass = v->visualType; 823 if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) { 824 red_bits = _mesa_bitcount(GET_REDMASK(v)); 825 green_bits = _mesa_bitcount(GET_GREENMASK(v)); 826 blue_bits = _mesa_bitcount(GET_BLUEMASK(v)); 827 } 828 else { 829 /* this is an approximation */ 830 int depth; 831 depth = v->visinfo->depth; 832 red_bits = depth / 3; 833 depth -= red_bits; 834 green_bits = depth / 2; 835 depth -= green_bits; 836 blue_bits = depth; 837 alpha_bits = 0; 838 assert( red_bits + green_bits + blue_bits == v->visinfo->depth ); 839 } 840 alpha_bits = v->mesa_visual.alphaBits; 841 } 842 843 /* initialize visual */ 844 { 845 struct gl_config *vis = &v->mesa_visual; 846 847 vis->rgbMode = GL_TRUE; 848 vis->doubleBufferMode = db_flag; 849 vis->stereoMode = stereo_flag; 850 851 vis->redBits = red_bits; 852 vis->greenBits = green_bits; 853 vis->blueBits = blue_bits; 854 vis->alphaBits = alpha_bits; 855 vis->rgbBits = red_bits + green_bits + blue_bits; 856 857 vis->indexBits = 0; 858 vis->depthBits = depth_size; 859 vis->stencilBits = stencil_size; 860 861 vis->accumRedBits = accum_red_size; 862 vis->accumGreenBits = accum_green_size; 863 vis->accumBlueBits = accum_blue_size; 864 vis->accumAlphaBits = accum_alpha_size; 865 866 vis->haveAccumBuffer = accum_red_size > 0; 867 vis->haveDepthBuffer = depth_size > 0; 868 vis->haveStencilBuffer = stencil_size > 0; 869 870 vis->numAuxBuffers = 0; 871 vis->level = 0; 872 vis->sampleBuffers = num_samples > 1; 873 vis->samples = num_samples; 874 } 875 876 v->stvis.buffer_mask = ST_ATTACHMENT_FRONT_LEFT_MASK; 877 if (db_flag) 878 v->stvis.buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK; 879 if (stereo_flag) { 880 v->stvis.buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK; 881 if (db_flag) 882 v->stvis.buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK; 883 } 884 885 v->stvis.color_format = choose_pixel_format(v); 886 887 /* Check format support at requested num_samples (for multisample) */ 888 if (!xmdpy->screen->is_format_supported(xmdpy->screen, 889 v->stvis.color_format, 890 PIPE_TEXTURE_2D, num_samples, 891 PIPE_BIND_RENDER_TARGET)) 892 v->stvis.color_format = PIPE_FORMAT_NONE; 893 894 if (v->stvis.color_format == PIPE_FORMAT_NONE) { 895 free(v->visinfo); 896 free(v); 897 return NULL; 898 } 899 900 v->stvis.depth_stencil_format = 901 choose_depth_stencil_format(xmdpy, depth_size, stencil_size, 902 num_samples); 903 904 v->stvis.accum_format = (accum_red_size + 905 accum_green_size + accum_blue_size + accum_alpha_size) ? 906 PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE; 907 908 v->stvis.samples = num_samples; 909 v->stvis.render_buffer = ST_ATTACHMENT_INVALID; 910 911 /* XXX minor hack */ 912 v->mesa_visual.level = level; 913 return v; 914 } 915 916 917 PUBLIC 918 void XMesaDestroyVisual( XMesaVisual v ) 919 { 920 free(v->visinfo); 921 free(v); 922 } 923 924 925 /** 926 * Return the informative name. 927 */ 928 const char * 929 xmesa_get_name(void) 930 { 931 return stapi->name; 932 } 933 934 935 /** 936 * Do per-display initializations. 937 */ 938 int 939 xmesa_init( Display *display ) 940 { 941 return xmesa_init_display(display) ? 0 : 1; 942 } 943 944 945 /** 946 * Create a new XMesaContext. 947 * \param v the XMesaVisual 948 * \param share_list another XMesaContext with which to share display 949 * lists or NULL if no sharing is wanted. 950 * \return an XMesaContext or NULL if error. 951 */ 952 PUBLIC 953 XMesaContext XMesaCreateContext( XMesaVisual v, XMesaContext share_list, 954 GLuint major, GLuint minor, 955 GLuint profileMask, GLuint contextFlags) 956 { 957 XMesaDisplay xmdpy = xmesa_init_display(v->display); 958 struct st_context_attribs attribs; 959 enum st_context_error ctx_err = 0; 960 XMesaContext c; 961 962 if (!xmdpy) 963 goto no_xmesa_context; 964 965 /* Note: the XMesaContext contains a Mesa struct gl_context struct (inheritance) */ 966 c = (XMesaContext) CALLOC_STRUCT(xmesa_context); 967 if (!c) 968 goto no_xmesa_context; 969 970 c->xm_visual = v; 971 c->xm_buffer = NULL; /* set later by XMesaMakeCurrent */ 972 c->xm_read_buffer = NULL; 973 974 memset(&attribs, 0, sizeof(attribs)); 975 attribs.visual = v->stvis; 976 attribs.major = major; 977 attribs.minor = minor; 978 if (contextFlags & GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB) 979 attribs.flags |= ST_CONTEXT_FLAG_FORWARD_COMPATIBLE; 980 if (contextFlags & GLX_CONTEXT_DEBUG_BIT_ARB) 981 attribs.flags |= ST_CONTEXT_FLAG_DEBUG; 982 if (contextFlags & GLX_CONTEXT_ROBUST_ACCESS_BIT_ARB) 983 attribs.flags |= ST_CONTEXT_FLAG_ROBUST_ACCESS; 984 985 switch (profileMask) { 986 case GLX_CONTEXT_CORE_PROFILE_BIT_ARB: 987 /* There are no profiles before OpenGL 3.2. The 988 * GLX_ARB_create_context_profile spec says: 989 * 990 * "If the requested OpenGL version is less than 3.2, 991 * GLX_CONTEXT_PROFILE_MASK_ARB is ignored and the functionality 992 * of the context is determined solely by the requested version." 993 */ 994 if (major > 3 || (major == 3 && minor >= 2)) { 995 attribs.profile = ST_PROFILE_OPENGL_CORE; 996 break; 997 } 998 /* fall-through */ 999 case GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB: 1000 /* 1001 * The spec also says: 1002 * 1003 * "If version 3.1 is requested, the context returned may implement 1004 * any of the following versions: 1005 * 1006 * * Version 3.1. The GL_ARB_compatibility extension may or may not 1007 * be implemented, as determined by the implementation. 1008 * * The core profile of version 3.2 or greater." 1009 * 1010 * and because Mesa doesn't support GL_ARB_compatibility, the only chance to 1011 * honour a 3.1 context is through core profile. 1012 */ 1013 if (major == 3 && minor == 1) { 1014 attribs.profile = ST_PROFILE_OPENGL_CORE; 1015 } else { 1016 attribs.profile = ST_PROFILE_DEFAULT; 1017 } 1018 break; 1019 case GLX_CONTEXT_ES_PROFILE_BIT_EXT: 1020 if (major >= 2) { 1021 attribs.profile = ST_PROFILE_OPENGL_ES2; 1022 } else { 1023 attribs.profile = ST_PROFILE_OPENGL_ES1; 1024 } 1025 break; 1026 default: 1027 assert(0); 1028 goto no_st; 1029 } 1030 1031 c->st = stapi->create_context(stapi, xmdpy->smapi, &attribs, 1032 &ctx_err, (share_list) ? share_list->st : NULL); 1033 if (c->st == NULL) 1034 goto no_st; 1035 1036 c->st->st_manager_private = (void *) c; 1037 1038 c->hud = hud_create(c->st->cso_context, NULL); 1039 1040 return c; 1041 1042 no_st: 1043 free(c); 1044 no_xmesa_context: 1045 return NULL; 1046 } 1047 1048 1049 1050 PUBLIC 1051 void XMesaDestroyContext( XMesaContext c ) 1052 { 1053 if (c->hud) { 1054 hud_destroy(c->hud, NULL); 1055 } 1056 1057 c->st->destroy(c->st); 1058 1059 /* FIXME: We should destroy the screen here, but if we do so, surfaces may 1060 * outlive it, causing segfaults 1061 struct pipe_screen *screen = c->st->pipe->screen; 1062 screen->destroy(screen); 1063 */ 1064 1065 free(c); 1066 } 1067 1068 1069 1070 /** 1071 * Private function for creating an XMesaBuffer which corresponds to an 1072 * X window or pixmap. 1073 * \param v the window's XMesaVisual 1074 * \param w the window we're wrapping 1075 * \return new XMesaBuffer or NULL if error 1076 */ 1077 PUBLIC XMesaBuffer 1078 XMesaCreateWindowBuffer(XMesaVisual v, Window w) 1079 { 1080 XWindowAttributes attr; 1081 XMesaBuffer b; 1082 Colormap cmap; 1083 int depth; 1084 1085 assert(v); 1086 assert(w); 1087 1088 /* Check that window depth matches visual depth */ 1089 XGetWindowAttributes( v->display, w, &attr ); 1090 depth = attr.depth; 1091 if (v->visinfo->depth != depth) { 1092 _mesa_warning(NULL, "XMesaCreateWindowBuffer: depth mismatch between visual (%d) and window (%d)!\n", 1093 v->visinfo->depth, depth); 1094 return NULL; 1095 } 1096 1097 /* Find colormap */ 1098 if (attr.colormap) { 1099 cmap = attr.colormap; 1100 } 1101 else { 1102 _mesa_warning(NULL, "Window %u has no colormap!\n", (unsigned int) w); 1103 /* this is weird, a window w/out a colormap!? */ 1104 /* OK, let's just allocate a new one and hope for the best */ 1105 cmap = XCreateColormap(v->display, w, attr.visual, AllocNone); 1106 } 1107 1108 b = create_xmesa_buffer((Drawable) w, WINDOW, v, cmap); 1109 if (!b) 1110 return NULL; 1111 1112 if (!initialize_visual_and_buffer( v, b, v->mesa_visual.rgbMode, 1113 (Drawable) w, cmap )) { 1114 xmesa_free_buffer(b); 1115 return NULL; 1116 } 1117 1118 return b; 1119 } 1120 1121 1122 1123 /** 1124 * Create a new XMesaBuffer from an X pixmap. 1125 * 1126 * \param v the XMesaVisual 1127 * \param p the pixmap 1128 * \param cmap the colormap, may be 0 if using a \c GLX_TRUE_COLOR or 1129 * \c GLX_DIRECT_COLOR visual for the pixmap 1130 * \returns new XMesaBuffer or NULL if error 1131 */ 1132 PUBLIC XMesaBuffer 1133 XMesaCreatePixmapBuffer(XMesaVisual v, Pixmap p, Colormap cmap) 1134 { 1135 XMesaBuffer b; 1136 1137 assert(v); 1138 1139 b = create_xmesa_buffer((Drawable) p, PIXMAP, v, cmap); 1140 if (!b) 1141 return NULL; 1142 1143 if (!initialize_visual_and_buffer(v, b, v->mesa_visual.rgbMode, 1144 (Drawable) p, cmap)) { 1145 xmesa_free_buffer(b); 1146 return NULL; 1147 } 1148 1149 return b; 1150 } 1151 1152 1153 /** 1154 * For GLX_EXT_texture_from_pixmap 1155 */ 1156 XMesaBuffer 1157 XMesaCreatePixmapTextureBuffer(XMesaVisual v, Pixmap p, 1158 Colormap cmap, 1159 int format, int target, int mipmap) 1160 { 1161 GET_CURRENT_CONTEXT(ctx); 1162 XMesaBuffer b; 1163 1164 assert(v); 1165 1166 b = create_xmesa_buffer((Drawable) p, PIXMAP, v, cmap); 1167 if (!b) 1168 return NULL; 1169 1170 /* get pixmap size */ 1171 xmesa_get_window_size(v->display, b, &b->width, &b->height); 1172 1173 if (target == 0) { 1174 /* examine dims */ 1175 if (ctx->Extensions.ARB_texture_non_power_of_two) { 1176 target = GLX_TEXTURE_2D_EXT; 1177 } 1178 else if ( _mesa_bitcount(b->width) == 1 1179 && _mesa_bitcount(b->height) == 1) { 1180 /* power of two size */ 1181 if (b->height == 1) { 1182 target = GLX_TEXTURE_1D_EXT; 1183 } 1184 else { 1185 target = GLX_TEXTURE_2D_EXT; 1186 } 1187 } 1188 else if (ctx->Extensions.NV_texture_rectangle) { 1189 target = GLX_TEXTURE_RECTANGLE_EXT; 1190 } 1191 else { 1192 /* non power of two textures not supported */ 1193 XMesaDestroyBuffer(b); 1194 return 0; 1195 } 1196 } 1197 1198 b->TextureTarget = target; 1199 b->TextureFormat = format; 1200 b->TextureMipmap = mipmap; 1201 1202 if (!initialize_visual_and_buffer(v, b, v->mesa_visual.rgbMode, 1203 (Drawable) p, cmap)) { 1204 xmesa_free_buffer(b); 1205 return NULL; 1206 } 1207 1208 return b; 1209 } 1210 1211 1212 1213 XMesaBuffer 1214 XMesaCreatePBuffer(XMesaVisual v, Colormap cmap, 1215 unsigned int width, unsigned int height) 1216 { 1217 Window root; 1218 Drawable drawable; /* X Pixmap Drawable */ 1219 XMesaBuffer b; 1220 1221 /* allocate pixmap for front buffer */ 1222 root = RootWindow( v->display, v->visinfo->screen ); 1223 drawable = XCreatePixmap(v->display, root, width, height, 1224 v->visinfo->depth); 1225 if (!drawable) 1226 return NULL; 1227 1228 b = create_xmesa_buffer(drawable, PBUFFER, v, cmap); 1229 if (!b) 1230 return NULL; 1231 1232 if (!initialize_visual_and_buffer(v, b, v->mesa_visual.rgbMode, 1233 drawable, cmap)) { 1234 xmesa_free_buffer(b); 1235 return NULL; 1236 } 1237 1238 return b; 1239 } 1240 1241 1242 1243 /* 1244 * Deallocate an XMesaBuffer structure and all related info. 1245 */ 1246 PUBLIC void 1247 XMesaDestroyBuffer(XMesaBuffer b) 1248 { 1249 xmesa_free_buffer(b); 1250 } 1251 1252 1253 /** 1254 * Notify the binding context to validate the buffer. 1255 */ 1256 void 1257 xmesa_notify_invalid_buffer(XMesaBuffer b) 1258 { 1259 p_atomic_inc(&b->stfb->stamp); 1260 } 1261 1262 1263 /** 1264 * Query the current drawable size and notify the binding context. 1265 */ 1266 void 1267 xmesa_check_buffer_size(XMesaBuffer b) 1268 { 1269 GLuint old_width, old_height; 1270 1271 if (b->type == PBUFFER) 1272 return; 1273 1274 old_width = b->width; 1275 old_height = b->height; 1276 1277 xmesa_get_window_size(b->xm_visual->display, b, &b->width, &b->height); 1278 1279 if (b->width != old_width || b->height != old_height) 1280 xmesa_notify_invalid_buffer(b); 1281 } 1282 1283 1284 /* 1285 * Bind buffer b to context c and make c the current rendering context. 1286 */ 1287 PUBLIC 1288 GLboolean XMesaMakeCurrent2( XMesaContext c, XMesaBuffer drawBuffer, 1289 XMesaBuffer readBuffer ) 1290 { 1291 XMesaContext old_ctx = XMesaGetCurrentContext(); 1292 1293 if (old_ctx && old_ctx != c) { 1294 XMesaFlush(old_ctx); 1295 old_ctx->xm_buffer = NULL; 1296 old_ctx->xm_read_buffer = NULL; 1297 } 1298 1299 if (c) { 1300 if (!drawBuffer || !readBuffer) 1301 return GL_FALSE; /* must specify buffers! */ 1302 1303 if (c == old_ctx && 1304 c->xm_buffer == drawBuffer && 1305 c->xm_read_buffer == readBuffer) 1306 return GL_TRUE; 1307 1308 xmesa_check_buffer_size(drawBuffer); 1309 if (readBuffer != drawBuffer) 1310 xmesa_check_buffer_size(readBuffer); 1311 1312 c->xm_buffer = drawBuffer; 1313 c->xm_read_buffer = readBuffer; 1314 1315 stapi->make_current(stapi, c->st, drawBuffer->stfb, readBuffer->stfb); 1316 1317 /* Solution to Stephane Rehel's problem with glXReleaseBuffersMESA(): */ 1318 drawBuffer->wasCurrent = GL_TRUE; 1319 } 1320 else { 1321 /* Detach */ 1322 stapi->make_current(stapi, NULL, NULL, NULL); 1323 1324 } 1325 return GL_TRUE; 1326 } 1327 1328 1329 /* 1330 * Unbind the context c from its buffer. 1331 */ 1332 GLboolean XMesaUnbindContext( XMesaContext c ) 1333 { 1334 /* A no-op for XFree86 integration purposes */ 1335 return GL_TRUE; 1336 } 1337 1338 1339 XMesaContext XMesaGetCurrentContext( void ) 1340 { 1341 struct st_context_iface *st = stapi->get_current(stapi); 1342 return (XMesaContext) (st) ? st->st_manager_private : NULL; 1343 } 1344 1345 1346 1347 /** 1348 * Swap front and back color buffers and have winsys display front buffer. 1349 * If there's no front color buffer no swap actually occurs. 1350 */ 1351 PUBLIC 1352 void XMesaSwapBuffers( XMesaBuffer b ) 1353 { 1354 XMesaContext xmctx = XMesaGetCurrentContext(); 1355 1356 /* Need to draw HUD before flushing */ 1357 if (xmctx && xmctx->hud) { 1358 struct pipe_resource *back = 1359 xmesa_get_framebuffer_resource(b->stfb, ST_ATTACHMENT_BACK_LEFT); 1360 hud_run(xmctx->hud, NULL, back); 1361 } 1362 1363 if (xmctx && xmctx->xm_buffer == b) { 1364 xmctx->st->flush( xmctx->st, ST_FLUSH_FRONT, NULL); 1365 } 1366 1367 xmesa_swap_st_framebuffer(b->stfb); 1368 } 1369 1370 1371 1372 /* 1373 * Copy sub-region of back buffer to front buffer 1374 */ 1375 void XMesaCopySubBuffer( XMesaBuffer b, int x, int y, int width, int height ) 1376 { 1377 XMesaContext xmctx = XMesaGetCurrentContext(); 1378 1379 xmctx->st->flush( xmctx->st, ST_FLUSH_FRONT, NULL); 1380 1381 xmesa_copy_st_framebuffer(b->stfb, 1382 ST_ATTACHMENT_BACK_LEFT, ST_ATTACHMENT_FRONT_LEFT, 1383 x, b->height - y - height, width, height); 1384 } 1385 1386 1387 1388 void XMesaFlush( XMesaContext c ) 1389 { 1390 if (c && c->xm_visual->display) { 1391 XMesaDisplay xmdpy = xmesa_init_display(c->xm_visual->display); 1392 struct pipe_fence_handle *fence = NULL; 1393 1394 c->st->flush(c->st, ST_FLUSH_FRONT, &fence); 1395 if (fence) { 1396 xmdpy->screen->fence_finish(xmdpy->screen, NULL, fence, 1397 PIPE_TIMEOUT_INFINITE); 1398 xmdpy->screen->fence_reference(xmdpy->screen, &fence, NULL); 1399 } 1400 XFlush( c->xm_visual->display ); 1401 } 1402 } 1403 1404 1405 1406 1407 1408 XMesaBuffer XMesaFindBuffer( Display *dpy, Drawable d ) 1409 { 1410 XMesaBuffer b; 1411 for (b = XMesaBufferList; b; b = b->Next) { 1412 if (b->ws.drawable == d && b->xm_visual->display == dpy) { 1413 return b; 1414 } 1415 } 1416 return NULL; 1417 } 1418 1419 1420 /** 1421 * Free/destroy all XMesaBuffers associated with given display. 1422 */ 1423 void xmesa_destroy_buffers_on_display(Display *dpy) 1424 { 1425 XMesaBuffer b, next; 1426 for (b = XMesaBufferList; b; b = next) { 1427 next = b->Next; 1428 if (b->xm_visual->display == dpy) { 1429 xmesa_free_buffer(b); 1430 /* delete head of list? */ 1431 if (XMesaBufferList == b) { 1432 XMesaBufferList = next; 1433 } 1434 } 1435 } 1436 } 1437 1438 1439 /* 1440 * Look for XMesaBuffers whose X window has been destroyed. 1441 * Deallocate any such XMesaBuffers. 1442 */ 1443 void XMesaGarbageCollect( void ) 1444 { 1445 XMesaBuffer b, next; 1446 for (b=XMesaBufferList; b; b=next) { 1447 next = b->Next; 1448 if (b->xm_visual && 1449 b->xm_visual->display && 1450 b->ws.drawable && 1451 b->type == WINDOW) { 1452 XSync(b->xm_visual->display, False); 1453 if (!window_exists( b->xm_visual->display, b->ws.drawable )) { 1454 /* found a dead window, free the ancillary info */ 1455 XMesaDestroyBuffer( b ); 1456 } 1457 } 1458 } 1459 } 1460 1461 1462 static enum st_attachment_type xmesa_attachment_type(int glx_attachment) 1463 { 1464 switch(glx_attachment) { 1465 case GLX_FRONT_LEFT_EXT: 1466 return ST_ATTACHMENT_FRONT_LEFT; 1467 case GLX_FRONT_RIGHT_EXT: 1468 return ST_ATTACHMENT_FRONT_RIGHT; 1469 case GLX_BACK_LEFT_EXT: 1470 return ST_ATTACHMENT_BACK_LEFT; 1471 case GLX_BACK_RIGHT_EXT: 1472 return ST_ATTACHMENT_BACK_RIGHT; 1473 default: 1474 assert(0); 1475 return ST_ATTACHMENT_FRONT_LEFT; 1476 } 1477 } 1478 1479 1480 PUBLIC void 1481 XMesaBindTexImage(Display *dpy, XMesaBuffer drawable, int buffer, 1482 const int *attrib_list) 1483 { 1484 struct st_context_iface *st = stapi->get_current(stapi); 1485 struct st_framebuffer_iface* stfbi = drawable->stfb; 1486 struct pipe_resource *res; 1487 int x, y, w, h; 1488 enum st_attachment_type st_attachment = xmesa_attachment_type(buffer); 1489 1490 x = 0; 1491 y = 0; 1492 w = drawable->width; 1493 h = drawable->height; 1494 1495 /* We need to validate our attachments before using them, 1496 * in case the texture doesn't exist yet. */ 1497 xmesa_st_framebuffer_validate_textures(stfbi, w, h, 1 << st_attachment); 1498 res = xmesa_get_attachment(stfbi, st_attachment); 1499 1500 if (res) { 1501 struct pipe_context* pipe = xmesa_get_context(stfbi); 1502 enum pipe_format internal_format = res->format; 1503 struct pipe_transfer *tex_xfer; 1504 char *map; 1505 int line, byte_width; 1506 XImage *img; 1507 1508 internal_format = choose_pixel_format(drawable->xm_visual); 1509 1510 map = pipe_transfer_map(pipe, res, 1511 0, 0, /* level, layer */ 1512 PIPE_TRANSFER_WRITE, 1513 x, y, 1514 w, h, &tex_xfer); 1515 if (!map) 1516 return; 1517 1518 /* Grab the XImage that we want to turn into a texture. */ 1519 img = XGetImage(dpy, 1520 drawable->ws.drawable, 1521 x, y, 1522 w, h, 1523 AllPlanes, 1524 ZPixmap); 1525 1526 if (!img) { 1527 pipe_transfer_unmap(pipe, tex_xfer); 1528 return; 1529 } 1530 1531 /* The pipe transfer has a pitch rounded up to the nearest 64 pixels. */ 1532 byte_width = w * ((img->bits_per_pixel + 7) / 8); 1533 1534 for (line = 0; line < h; line++) 1535 memcpy(&map[line * tex_xfer->stride], 1536 &img->data[line * img->bytes_per_line], 1537 byte_width); 1538 1539 pipe_transfer_unmap(pipe, tex_xfer); 1540 1541 st->teximage(st, 1542 ST_TEXTURE_2D, 1543 0, /* level */ 1544 internal_format, 1545 res, 1546 FALSE /* no mipmap */); 1547 1548 } 1549 } 1550 1551 1552 1553 PUBLIC void 1554 XMesaReleaseTexImage(Display *dpy, XMesaBuffer drawable, int buffer) 1555 { 1556 } 1557 1558 1559 void 1560 XMesaCopyContext(XMesaContext src, XMesaContext dst, unsigned long mask) 1561 { 1562 if (dst->st->copy) 1563 dst->st->copy(dst->st, src->st, mask); 1564 } 1565
