1 /************************************************************************** 2 * 3 * Copyright 2003 VMware, Inc. 4 * 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 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR 22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28 29 #include "main/glheader.h" 30 #include "main/context.h" 31 #include "main/extensions.h" 32 #include "main/fbobject.h" 33 #include "main/framebuffer.h" 34 #include "main/imports.h" 35 #include "main/points.h" 36 #include "main/renderbuffer.h" 37 38 #include "swrast/swrast.h" 39 #include "swrast_setup/swrast_setup.h" 40 #include "tnl/tnl.h" 41 #include "drivers/common/driverfuncs.h" 42 #include "drivers/common/meta.h" 43 44 #include "intel_chipset.h" 45 #include "intel_buffers.h" 46 #include "intel_tex.h" 47 #include "intel_batchbuffer.h" 48 #include "intel_clear.h" 49 #include "intel_extensions.h" 50 #include "intel_pixel.h" 51 #include "intel_regions.h" 52 #include "intel_buffer_objects.h" 53 #include "intel_fbo.h" 54 #include "intel_bufmgr.h" 55 #include "intel_screen.h" 56 #include "intel_mipmap_tree.h" 57 58 #include "utils.h" 59 #include "util/debug.h" 60 #include "util/ralloc.h" 61 62 int INTEL_DEBUG = (0); 63 64 const char *const i915_vendor_string = "Intel Open Source Technology Center"; 65 66 const char * 67 i915_get_renderer_string(unsigned deviceID) 68 { 69 const char *chipset; 70 static char buffer[128]; 71 72 switch (deviceID) { 73 #undef CHIPSET 74 #define CHIPSET(id, symbol, str) case id: chipset = str; break; 75 #include "pci_ids/i915_pci_ids.h" 76 default: 77 chipset = "Unknown Intel Chipset"; 78 break; 79 } 80 81 (void) driGetRendererString(buffer, chipset, 0); 82 return buffer; 83 } 84 85 static const GLubyte * 86 intelGetString(struct gl_context * ctx, GLenum name) 87 { 88 const struct intel_context *const intel = intel_context(ctx); 89 90 switch (name) { 91 case GL_VENDOR: 92 return (GLubyte *) i915_vendor_string; 93 94 case GL_RENDERER: 95 return 96 (GLubyte *) i915_get_renderer_string(intel->intelScreen->deviceID); 97 98 default: 99 return NULL; 100 } 101 } 102 103 #define flushFront(screen) ((screen)->image.loader ? (screen)->image.loader->flushFrontBuffer : (screen)->dri2.loader->flushFrontBuffer) 104 105 static void 106 intel_flush_front(struct gl_context *ctx) 107 { 108 struct intel_context *intel = intel_context(ctx); 109 __DRIcontext *driContext = intel->driContext; 110 __DRIdrawable *driDrawable = driContext->driDrawablePriv; 111 __DRIscreen *const screen = intel->intelScreen->driScrnPriv; 112 113 if (intel->front_buffer_dirty && _mesa_is_winsys_fbo(ctx->DrawBuffer)) { 114 if (flushFront(screen) && 115 driDrawable && 116 driDrawable->loaderPrivate) { 117 flushFront(screen)(driDrawable, driDrawable->loaderPrivate); 118 119 /* We set the dirty bit in intel_prepare_render() if we're 120 * front buffer rendering once we get there. 121 */ 122 intel->front_buffer_dirty = false; 123 } 124 } 125 } 126 127 static void 128 intel_update_image_buffers(struct intel_context *intel, __DRIdrawable *drawable); 129 130 static unsigned 131 intel_bits_per_pixel(const struct intel_renderbuffer *rb) 132 { 133 return _mesa_get_format_bytes(intel_rb_format(rb)) * 8; 134 } 135 136 static void 137 intel_query_dri2_buffers(struct intel_context *intel, 138 __DRIdrawable *drawable, 139 __DRIbuffer **buffers, 140 int *count); 141 142 static void 143 intel_process_dri2_buffer(struct intel_context *intel, 144 __DRIdrawable *drawable, 145 __DRIbuffer *buffer, 146 struct intel_renderbuffer *rb, 147 const char *buffer_name); 148 149 static void 150 intel_update_dri2_buffers(struct intel_context *intel, __DRIdrawable *drawable) 151 { 152 __DRIbuffer *buffers = NULL; 153 int i, count; 154 const char *region_name; 155 struct intel_renderbuffer *rb; 156 struct gl_framebuffer *fb = drawable->driverPrivate; 157 158 intel_query_dri2_buffers(intel, drawable, &buffers, &count); 159 160 if (buffers == NULL) 161 return; 162 163 for (i = 0; i < count; i++) { 164 switch (buffers[i].attachment) { 165 case __DRI_BUFFER_FRONT_LEFT: 166 rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT); 167 region_name = "dri2 front buffer"; 168 break; 169 170 case __DRI_BUFFER_FAKE_FRONT_LEFT: 171 rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT); 172 region_name = "dri2 fake front buffer"; 173 break; 174 175 case __DRI_BUFFER_BACK_LEFT: 176 rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT); 177 region_name = "dri2 back buffer"; 178 break; 179 180 case __DRI_BUFFER_DEPTH: 181 case __DRI_BUFFER_HIZ: 182 case __DRI_BUFFER_DEPTH_STENCIL: 183 case __DRI_BUFFER_STENCIL: 184 case __DRI_BUFFER_ACCUM: 185 default: 186 fprintf(stderr, 187 "unhandled buffer attach event, attachment type %d\n", 188 buffers[i].attachment); 189 return; 190 } 191 192 intel_process_dri2_buffer(intel, drawable, &buffers[i], rb, region_name); 193 } 194 } 195 196 void 197 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable) 198 { 199 struct intel_context *intel = context->driverPrivate; 200 __DRIscreen *screen = intel->intelScreen->driScrnPriv; 201 202 /* Set this up front, so that in case our buffers get invalidated 203 * while we're getting new buffers, we don't clobber the stamp and 204 * thus ignore the invalidate. */ 205 drawable->lastStamp = drawable->dri2.stamp; 206 207 if (unlikely(INTEL_DEBUG & DEBUG_DRI)) 208 fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable); 209 210 if (screen->image.loader) 211 intel_update_image_buffers(intel, drawable); 212 else 213 intel_update_dri2_buffers(intel, drawable); 214 215 driUpdateFramebufferSize(&intel->ctx, drawable); 216 } 217 218 /** 219 * intel_prepare_render should be called anywhere that curent read/drawbuffer 220 * state is required. 221 */ 222 void 223 intel_prepare_render(struct intel_context *intel) 224 { 225 __DRIcontext *driContext = intel->driContext; 226 __DRIdrawable *drawable; 227 228 drawable = driContext->driDrawablePriv; 229 if (drawable && drawable->dri2.stamp != driContext->dri2.draw_stamp) { 230 if (drawable->lastStamp != drawable->dri2.stamp) 231 intel_update_renderbuffers(driContext, drawable); 232 intel_draw_buffer(&intel->ctx); 233 driContext->dri2.draw_stamp = drawable->dri2.stamp; 234 } 235 236 drawable = driContext->driReadablePriv; 237 if (drawable && drawable->dri2.stamp != driContext->dri2.read_stamp) { 238 if (drawable->lastStamp != drawable->dri2.stamp) 239 intel_update_renderbuffers(driContext, drawable); 240 driContext->dri2.read_stamp = drawable->dri2.stamp; 241 } 242 243 /* If we're currently rendering to the front buffer, the rendering 244 * that will happen next will probably dirty the front buffer. So 245 * mark it as dirty here. 246 */ 247 if (_mesa_is_front_buffer_drawing(intel->ctx.DrawBuffer)) 248 intel->front_buffer_dirty = true; 249 250 /* Wait for the swapbuffers before the one we just emitted, so we 251 * don't get too many swaps outstanding for apps that are GPU-heavy 252 * but not CPU-heavy. 253 * 254 * We're using intelDRI2Flush (called from the loader before 255 * swapbuffer) and glFlush (for front buffer rendering) as the 256 * indicator that a frame is done and then throttle when we get 257 * here as we prepare to render the next frame. At this point for 258 * round trips for swap/copy and getting new buffers are done and 259 * we'll spend less time waiting on the GPU. 260 * 261 * Unfortunately, we don't have a handle to the batch containing 262 * the swap, and getting our hands on that doesn't seem worth it, 263 * so we just us the first batch we emitted after the last swap. 264 */ 265 if (intel->need_throttle && intel->first_post_swapbuffers_batch) { 266 if (!intel->disable_throttling) 267 drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch); 268 drm_intel_bo_unreference(intel->first_post_swapbuffers_batch); 269 intel->first_post_swapbuffers_batch = NULL; 270 intel->need_throttle = false; 271 } 272 } 273 274 static void 275 intel_noninvalidate_viewport(struct gl_context *ctx) 276 { 277 struct intel_context *intel = intel_context(ctx); 278 __DRIcontext *driContext = intel->driContext; 279 280 intelCalcViewport(ctx); 281 282 if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) { 283 dri2InvalidateDrawable(driContext->driDrawablePriv); 284 dri2InvalidateDrawable(driContext->driReadablePriv); 285 } 286 } 287 288 static void 289 intel_viewport(struct gl_context *ctx) 290 { 291 intelCalcViewport(ctx); 292 } 293 294 static const struct debug_control debug_control[] = { 295 { "tex", DEBUG_TEXTURE}, 296 { "state", DEBUG_STATE}, 297 { "blit", DEBUG_BLIT}, 298 { "mip", DEBUG_MIPTREE}, 299 { "fall", DEBUG_PERF}, 300 { "perf", DEBUG_PERF}, 301 { "bat", DEBUG_BATCH}, 302 { "pix", DEBUG_PIXEL}, 303 { "buf", DEBUG_BUFMGR}, 304 { "reg", DEBUG_REGION}, 305 { "fbo", DEBUG_FBO}, 306 { "fs", DEBUG_WM }, 307 { "sync", DEBUG_SYNC}, 308 { "dri", DEBUG_DRI }, 309 { "stats", DEBUG_STATS }, 310 { "wm", DEBUG_WM }, 311 { "aub", DEBUG_AUB }, 312 { NULL, 0 } 313 }; 314 315 316 static void 317 intelInvalidateState(struct gl_context * ctx, GLuint new_state) 318 { 319 struct intel_context *intel = intel_context(ctx); 320 321 if (ctx->swrast_context) 322 _swrast_InvalidateState(ctx, new_state); 323 _vbo_InvalidateState(ctx, new_state); 324 325 intel->NewGLState |= new_state; 326 327 if (intel->vtbl.invalidate_state) 328 intel->vtbl.invalidate_state( intel, new_state ); 329 } 330 331 void 332 intel_flush_rendering_to_batch(struct gl_context *ctx) 333 { 334 struct intel_context *intel = intel_context(ctx); 335 336 if (intel->Fallback) 337 _swrast_flush(ctx); 338 339 INTEL_FIREVERTICES(intel); 340 } 341 342 void 343 _intel_flush(struct gl_context *ctx, const char *file, int line) 344 { 345 struct intel_context *intel = intel_context(ctx); 346 347 intel_flush_rendering_to_batch(ctx); 348 349 if (intel->batch.used) 350 _intel_batchbuffer_flush(intel, file, line); 351 } 352 353 static void 354 intel_glFlush(struct gl_context *ctx) 355 { 356 struct intel_context *intel = intel_context(ctx); 357 358 intel_flush(ctx); 359 intel_flush_front(ctx); 360 if (_mesa_is_front_buffer_drawing(ctx->DrawBuffer)) 361 intel->need_throttle = true; 362 } 363 364 void 365 intelFinish(struct gl_context * ctx) 366 { 367 struct intel_context *intel = intel_context(ctx); 368 369 intel_flush(ctx); 370 intel_flush_front(ctx); 371 372 if (intel->batch.last_bo) 373 drm_intel_bo_wait_rendering(intel->batch.last_bo); 374 } 375 376 void 377 intelInitDriverFunctions(struct dd_function_table *functions) 378 { 379 _mesa_init_driver_functions(functions); 380 381 functions->Flush = intel_glFlush; 382 functions->Finish = intelFinish; 383 functions->GetString = intelGetString; 384 functions->UpdateState = intelInvalidateState; 385 386 intelInitTextureFuncs(functions); 387 intelInitTextureImageFuncs(functions); 388 intelInitTextureSubImageFuncs(functions); 389 intelInitTextureCopyImageFuncs(functions); 390 intelInitClearFuncs(functions); 391 intelInitBufferFuncs(functions); 392 intelInitPixelFuncs(functions); 393 intelInitBufferObjectFuncs(functions); 394 intel_init_syncobj_functions(functions); 395 } 396 397 bool 398 intelInitContext(struct intel_context *intel, 399 int api, 400 unsigned major_version, 401 unsigned minor_version, 402 uint32_t flags, 403 const struct gl_config * mesaVis, 404 __DRIcontext * driContextPriv, 405 void *sharedContextPrivate, 406 struct dd_function_table *functions, 407 unsigned *dri_ctx_error) 408 { 409 struct gl_context *ctx = &intel->ctx; 410 struct gl_context *shareCtx = (struct gl_context *) sharedContextPrivate; 411 __DRIscreen *sPriv = driContextPriv->driScreenPriv; 412 struct intel_screen *intelScreen = sPriv->driverPrivate; 413 int bo_reuse_mode; 414 415 /* Can't rely on invalidate events, fall back to glViewport hack */ 416 if (!driContextPriv->driScreenPriv->dri2.useInvalidate) 417 functions->Viewport = intel_noninvalidate_viewport; 418 else 419 functions->Viewport = intel_viewport; 420 421 intel->intelScreen = intelScreen; 422 423 if (!_mesa_initialize_context(&intel->ctx, api, mesaVis, shareCtx, 424 functions)) { 425 *dri_ctx_error = __DRI_CTX_ERROR_NO_MEMORY; 426 printf("%s: failed to init mesa context\n", __func__); 427 return false; 428 } 429 430 driContextSetFlags(&intel->ctx, flags); 431 432 driContextPriv->driverPrivate = intel; 433 intel->driContext = driContextPriv; 434 435 intel->gen = intelScreen->gen; 436 437 const int devID = intelScreen->deviceID; 438 439 intel->is_945 = IS_945(devID); 440 441 intel->has_swizzling = intel->intelScreen->hw_has_swizzling; 442 443 memset(&ctx->TextureFormatSupported, 444 0, sizeof(ctx->TextureFormatSupported)); 445 446 driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache, 447 sPriv->myNum, "i915"); 448 intel->maxBatchSize = 4096; 449 450 /* Estimate the size of the mappable aperture into the GTT. There's an 451 * ioctl to get the whole GTT size, but not one to get the mappable subset. 452 * It turns out it's basically always 256MB, though some ancient hardware 453 * was smaller. 454 */ 455 uint32_t gtt_size = 256 * 1024 * 1024; 456 if (intel->gen == 2) 457 gtt_size = 128 * 1024 * 1024; 458 459 /* We don't want to map two objects such that a memcpy between them would 460 * just fault one mapping in and then the other over and over forever. So 461 * we would need to divide the GTT size by 2. Additionally, some GTT is 462 * taken up by things like the framebuffer and the ringbuffer and such, so 463 * be more conservative. 464 */ 465 intel->max_gtt_map_object_size = gtt_size / 4; 466 467 intel->bufmgr = intelScreen->bufmgr; 468 469 bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse"); 470 switch (bo_reuse_mode) { 471 case DRI_CONF_BO_REUSE_DISABLED: 472 break; 473 case DRI_CONF_BO_REUSE_ALL: 474 intel_bufmgr_gem_enable_reuse(intel->bufmgr); 475 break; 476 } 477 478 ctx->Const.MinLineWidth = 1.0; 479 ctx->Const.MinLineWidthAA = 1.0; 480 ctx->Const.MaxLineWidth = 7.0; 481 ctx->Const.MaxLineWidthAA = 7.0; 482 ctx->Const.LineWidthGranularity = 0.5; 483 484 ctx->Const.MinPointSize = 1.0; 485 ctx->Const.MinPointSizeAA = 1.0; 486 ctx->Const.MaxPointSize = 255.0; 487 ctx->Const.MaxPointSizeAA = 3.0; 488 ctx->Const.PointSizeGranularity = 1.0; 489 490 ctx->Const.StripTextureBorder = GL_TRUE; 491 492 /* reinitialize the context point state. 493 * It depend on constants in __struct gl_contextRec::Const 494 */ 495 _mesa_init_point(ctx); 496 497 ctx->Const.MaxRenderbufferSize = 2048; 498 499 _swrast_CreateContext(ctx); 500 _vbo_CreateContext(ctx); 501 if (ctx->swrast_context) { 502 _tnl_CreateContext(ctx); 503 _swsetup_CreateContext(ctx); 504 505 /* Configure swrast to match hardware characteristics: */ 506 _swrast_allow_pixel_fog(ctx, false); 507 _swrast_allow_vertex_fog(ctx, true); 508 } 509 510 _mesa_meta_init(ctx); 511 512 intel->hw_stipple = 1; 513 514 intel->RenderIndex = ~0; 515 516 intelInitExtensions(ctx); 517 518 INTEL_DEBUG = parse_debug_string(getenv("INTEL_DEBUG"), debug_control); 519 if (INTEL_DEBUG & DEBUG_BUFMGR) 520 dri_bufmgr_set_debug(intel->bufmgr, true); 521 if (INTEL_DEBUG & DEBUG_PERF) 522 intel->perf_debug = true; 523 524 if (INTEL_DEBUG & DEBUG_AUB) 525 drm_intel_bufmgr_gem_set_aub_dump(intel->bufmgr, true); 526 527 intel_batchbuffer_init(intel); 528 529 intel_fbo_init(intel); 530 531 intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z"); 532 533 intel->prim.primitive = ~0; 534 535 /* Force all software fallbacks */ 536 if (driQueryOptionb(&intel->optionCache, "no_rast")) { 537 fprintf(stderr, "disabling 3D rasterization\n"); 538 intel->no_rast = 1; 539 } 540 541 if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) { 542 fprintf(stderr, "flushing batchbuffer before/after each draw call\n"); 543 intel->always_flush_batch = 1; 544 } 545 546 if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) { 547 fprintf(stderr, "flushing GPU caches before/after each draw call\n"); 548 intel->always_flush_cache = 1; 549 } 550 551 if (driQueryOptionb(&intel->optionCache, "disable_throttling")) { 552 fprintf(stderr, "disabling flush throttling\n"); 553 intel->disable_throttling = 1; 554 } 555 556 return true; 557 } 558 559 void 560 intelDestroyContext(__DRIcontext * driContextPriv) 561 { 562 struct intel_context *intel = 563 (struct intel_context *) driContextPriv->driverPrivate; 564 struct gl_context *ctx = &intel->ctx; 565 566 assert(intel); /* should never be null */ 567 if (intel) { 568 INTEL_FIREVERTICES(intel); 569 570 /* Dump a final BMP in case the application doesn't call SwapBuffers */ 571 if (INTEL_DEBUG & DEBUG_AUB) { 572 intel_batchbuffer_flush(intel); 573 aub_dump_bmp(&intel->ctx); 574 } 575 576 _mesa_meta_free(&intel->ctx); 577 578 intel->vtbl.destroy(intel); 579 580 if (ctx->swrast_context) { 581 _swsetup_DestroyContext(&intel->ctx); 582 _tnl_DestroyContext(&intel->ctx); 583 } 584 _vbo_DestroyContext(&intel->ctx); 585 586 if (ctx->swrast_context) 587 _swrast_DestroyContext(&intel->ctx); 588 intel->Fallback = 0x0; /* don't call _swrast_Flush later */ 589 590 intel_batchbuffer_free(intel); 591 592 free(intel->prim.vb); 593 intel->prim.vb = NULL; 594 drm_intel_bo_unreference(intel->prim.vb_bo); 595 intel->prim.vb_bo = NULL; 596 drm_intel_bo_unreference(intel->first_post_swapbuffers_batch); 597 intel->first_post_swapbuffers_batch = NULL; 598 599 driDestroyOptionCache(&intel->optionCache); 600 601 /* free the Mesa context */ 602 _mesa_free_context_data(&intel->ctx); 603 604 _math_matrix_dtr(&intel->ViewportMatrix); 605 606 ralloc_free(intel); 607 driContextPriv->driverPrivate = NULL; 608 } 609 } 610 611 GLboolean 612 intelUnbindContext(__DRIcontext * driContextPriv) 613 { 614 /* Unset current context and dispath table */ 615 _mesa_make_current(NULL, NULL, NULL); 616 617 return true; 618 } 619 620 GLboolean 621 intelMakeCurrent(__DRIcontext * driContextPriv, 622 __DRIdrawable * driDrawPriv, 623 __DRIdrawable * driReadPriv) 624 { 625 struct intel_context *intel; 626 GET_CURRENT_CONTEXT(curCtx); 627 628 if (driContextPriv) 629 intel = (struct intel_context *) driContextPriv->driverPrivate; 630 else 631 intel = NULL; 632 633 /* According to the glXMakeCurrent() man page: "Pending commands to 634 * the previous context, if any, are flushed before it is released." 635 * But only flush if we're actually changing contexts. 636 */ 637 if (intel_context(curCtx) && intel_context(curCtx) != intel) { 638 _mesa_flush(curCtx); 639 } 640 641 if (driContextPriv) { 642 struct gl_context *ctx = &intel->ctx; 643 struct gl_framebuffer *fb, *readFb; 644 645 if (driDrawPriv == NULL && driReadPriv == NULL) { 646 fb = _mesa_get_incomplete_framebuffer(); 647 readFb = _mesa_get_incomplete_framebuffer(); 648 } else { 649 fb = driDrawPriv->driverPrivate; 650 readFb = driReadPriv->driverPrivate; 651 driContextPriv->dri2.draw_stamp = driDrawPriv->dri2.stamp - 1; 652 driContextPriv->dri2.read_stamp = driReadPriv->dri2.stamp - 1; 653 } 654 655 intel_prepare_render(intel); 656 _mesa_make_current(ctx, fb, readFb); 657 658 /* We do this in intel_prepare_render() too, but intel->ctx.DrawBuffer 659 * is NULL at that point. We can't call _mesa_makecurrent() 660 * first, since we need the buffer size for the initial 661 * viewport. So just call intel_draw_buffer() again here. */ 662 intel_draw_buffer(ctx); 663 } 664 else { 665 _mesa_make_current(NULL, NULL, NULL); 666 } 667 668 return true; 669 } 670 671 /** 672 * \brief Query DRI2 to obtain a DRIdrawable's buffers. 673 * 674 * To determine which DRI buffers to request, examine the renderbuffers 675 * attached to the drawable's framebuffer. Then request the buffers with 676 * DRI2GetBuffers() or DRI2GetBuffersWithFormat(). 677 * 678 * This is called from intel_update_renderbuffers(). 679 * 680 * \param drawable Drawable whose buffers are queried. 681 * \param buffers [out] List of buffers returned by DRI2 query. 682 * \param buffer_count [out] Number of buffers returned. 683 * 684 * \see intel_update_renderbuffers() 685 * \see DRI2GetBuffers() 686 * \see DRI2GetBuffersWithFormat() 687 */ 688 static void 689 intel_query_dri2_buffers(struct intel_context *intel, 690 __DRIdrawable *drawable, 691 __DRIbuffer **buffers, 692 int *buffer_count) 693 { 694 __DRIscreen *screen = intel->intelScreen->driScrnPriv; 695 struct gl_framebuffer *fb = drawable->driverPrivate; 696 int i = 0; 697 unsigned attachments[8]; 698 699 struct intel_renderbuffer *front_rb; 700 struct intel_renderbuffer *back_rb; 701 702 front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT); 703 back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT); 704 705 memset(attachments, 0, sizeof(attachments)); 706 if ((_mesa_is_front_buffer_drawing(fb) || 707 _mesa_is_front_buffer_reading(fb) || 708 !back_rb) && front_rb) { 709 /* If a fake front buffer is in use, then querying for 710 * __DRI_BUFFER_FRONT_LEFT will cause the server to copy the image from 711 * the real front buffer to the fake front buffer. So before doing the 712 * query, we need to make sure all the pending drawing has landed in the 713 * real front buffer. 714 */ 715 intel_flush(&intel->ctx); 716 intel_flush_front(&intel->ctx); 717 718 attachments[i++] = __DRI_BUFFER_FRONT_LEFT; 719 attachments[i++] = intel_bits_per_pixel(front_rb); 720 } else if (front_rb && intel->front_buffer_dirty) { 721 /* We have pending front buffer rendering, but we aren't querying for a 722 * front buffer. If the front buffer we have is a fake front buffer, 723 * the X server is going to throw it away when it processes the query. 724 * So before doing the query, make sure all the pending drawing has 725 * landed in the real front buffer. 726 */ 727 intel_flush(&intel->ctx); 728 intel_flush_front(&intel->ctx); 729 } 730 731 if (back_rb) { 732 attachments[i++] = __DRI_BUFFER_BACK_LEFT; 733 attachments[i++] = intel_bits_per_pixel(back_rb); 734 } 735 736 assert(i <= ARRAY_SIZE(attachments)); 737 738 *buffers = screen->dri2.loader->getBuffersWithFormat(drawable, 739 &drawable->w, 740 &drawable->h, 741 attachments, i / 2, 742 buffer_count, 743 drawable->loaderPrivate); 744 } 745 746 /** 747 * \brief Assign a DRI buffer's DRM region to a renderbuffer. 748 * 749 * This is called from intel_update_renderbuffers(). 750 * 751 * \par Note: 752 * DRI buffers whose attachment point is DRI2BufferStencil or 753 * DRI2BufferDepthStencil are handled as special cases. 754 * 755 * \param buffer_name is a human readable name, such as "dri2 front buffer", 756 * that is passed to intel_region_alloc_for_handle(). 757 * 758 * \see intel_update_renderbuffers() 759 * \see intel_region_alloc_for_handle() 760 */ 761 static void 762 intel_process_dri2_buffer(struct intel_context *intel, 763 __DRIdrawable *drawable, 764 __DRIbuffer *buffer, 765 struct intel_renderbuffer *rb, 766 const char *buffer_name) 767 { 768 struct intel_region *region = NULL; 769 770 if (!rb) 771 return; 772 773 /* We try to avoid closing and reopening the same BO name, because the first 774 * use of a mapping of the buffer involves a bunch of page faulting which is 775 * moderately expensive. 776 */ 777 if (rb->mt && 778 rb->mt->region && 779 rb->mt->region->name == buffer->name) 780 return; 781 782 if (unlikely(INTEL_DEBUG & DEBUG_DRI)) { 783 fprintf(stderr, 784 "attaching buffer %d, at %d, cpp %d, pitch %d\n", 785 buffer->name, buffer->attachment, 786 buffer->cpp, buffer->pitch); 787 } 788 789 intel_miptree_release(&rb->mt); 790 region = intel_region_alloc_for_handle(intel->intelScreen, 791 buffer->cpp, 792 drawable->w, 793 drawable->h, 794 buffer->pitch, 795 buffer->name, 796 buffer_name); 797 if (!region) 798 return; 799 800 rb->mt = intel_miptree_create_for_dri2_buffer(intel, 801 buffer->attachment, 802 intel_rb_format(rb), 803 region); 804 intel_region_release(®ion); 805 } 806 807 /** 808 * \brief Query DRI Image loader to obtain a DRIdrawable's buffers. 809 * 810 * To determine which DRI buffers to request, examine the renderbuffers 811 * attached to the drawable's framebuffer. Then request the buffers with 812 * dri3 813 * 814 * This is called from intel_update_renderbuffers(). 815 * 816 * \param drawable Drawable whose buffers are queried. 817 * \param buffers [out] List of buffers returned by DRI2 query. 818 * \param buffer_count [out] Number of buffers returned. 819 * 820 * \see intel_update_renderbuffers() 821 */ 822 823 static void 824 intel_update_image_buffer(struct intel_context *intel, 825 __DRIdrawable *drawable, 826 struct intel_renderbuffer *rb, 827 __DRIimage *buffer, 828 enum __DRIimageBufferMask buffer_type) 829 { 830 struct intel_region *region = buffer->region; 831 832 if (!rb || !region) 833 return; 834 835 unsigned num_samples = rb->Base.Base.NumSamples; 836 837 if (rb->mt && 838 rb->mt->region && 839 rb->mt->region == region) 840 return; 841 842 intel_miptree_release(&rb->mt); 843 rb->mt = intel_miptree_create_for_image_buffer(intel, 844 buffer_type, 845 intel_rb_format(rb), 846 num_samples, 847 region); 848 } 849 850 851 static void 852 intel_update_image_buffers(struct intel_context *intel, __DRIdrawable *drawable) 853 { 854 struct gl_framebuffer *fb = drawable->driverPrivate; 855 __DRIscreen *screen = intel->intelScreen->driScrnPriv; 856 struct intel_renderbuffer *front_rb; 857 struct intel_renderbuffer *back_rb; 858 struct __DRIimageList images; 859 unsigned int format; 860 uint32_t buffer_mask = 0; 861 int ret; 862 863 front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT); 864 back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT); 865 866 if (back_rb) 867 format = intel_rb_format(back_rb); 868 else if (front_rb) 869 format = intel_rb_format(front_rb); 870 else 871 return; 872 873 if (front_rb && (_mesa_is_front_buffer_drawing(fb) || 874 _mesa_is_front_buffer_reading(fb) || !back_rb)) { 875 buffer_mask |= __DRI_IMAGE_BUFFER_FRONT; 876 } 877 878 if (back_rb) 879 buffer_mask |= __DRI_IMAGE_BUFFER_BACK; 880 881 ret = screen->image.loader->getBuffers(drawable, 882 driGLFormatToImageFormat(format), 883 &drawable->dri2.stamp, 884 drawable->loaderPrivate, 885 buffer_mask, 886 &images); 887 if (!ret) 888 return; 889 890 if (images.image_mask & __DRI_IMAGE_BUFFER_FRONT) { 891 drawable->w = images.front->width; 892 drawable->h = images.front->height; 893 intel_update_image_buffer(intel, 894 drawable, 895 front_rb, 896 images.front, 897 __DRI_IMAGE_BUFFER_FRONT); 898 } 899 if (images.image_mask & __DRI_IMAGE_BUFFER_BACK) { 900 drawable->w = images.back->width; 901 drawable->h = images.back->height; 902 intel_update_image_buffer(intel, 903 drawable, 904 back_rb, 905 images.back, 906 __DRI_IMAGE_BUFFER_BACK); 907 } 908 } 909