intel_context.c revision 6b9e4b6ca7bec9dbafe4f4368f2f33bbeda6cb5c
1/************************************************************************** 2 * 3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. 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 TUNGSTEN GRAPHICS 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 57#include "drirenderbuffer.h" 58#include "utils.h" 59#include "../glsl/ralloc.h" 60 61#ifndef INTEL_DEBUG 62int INTEL_DEBUG = (0); 63#endif 64 65 66static const GLubyte * 67intelGetString(struct gl_context * ctx, GLenum name) 68{ 69 const struct intel_context *const intel = intel_context(ctx); 70 const char *chipset; 71 static char buffer[128]; 72 73 switch (name) { 74 case GL_VENDOR: 75 return (GLubyte *) "Tungsten Graphics, Inc"; 76 break; 77 78 case GL_RENDERER: 79 switch (intel->intelScreen->deviceID) { 80 case PCI_CHIP_845_G: 81 chipset = "Intel(R) 845G"; 82 break; 83 case PCI_CHIP_I830_M: 84 chipset = "Intel(R) 830M"; 85 break; 86 case PCI_CHIP_I855_GM: 87 chipset = "Intel(R) 852GM/855GM"; 88 break; 89 case PCI_CHIP_I865_G: 90 chipset = "Intel(R) 865G"; 91 break; 92 case PCI_CHIP_I915_G: 93 chipset = "Intel(R) 915G"; 94 break; 95 case PCI_CHIP_E7221_G: 96 chipset = "Intel (R) E7221G (i915)"; 97 break; 98 case PCI_CHIP_I915_GM: 99 chipset = "Intel(R) 915GM"; 100 break; 101 case PCI_CHIP_I945_G: 102 chipset = "Intel(R) 945G"; 103 break; 104 case PCI_CHIP_I945_GM: 105 chipset = "Intel(R) 945GM"; 106 break; 107 case PCI_CHIP_I945_GME: 108 chipset = "Intel(R) 945GME"; 109 break; 110 case PCI_CHIP_G33_G: 111 chipset = "Intel(R) G33"; 112 break; 113 case PCI_CHIP_Q35_G: 114 chipset = "Intel(R) Q35"; 115 break; 116 case PCI_CHIP_Q33_G: 117 chipset = "Intel(R) Q33"; 118 break; 119 case PCI_CHIP_IGD_GM: 120 case PCI_CHIP_IGD_G: 121 chipset = "Intel(R) IGD"; 122 break; 123 case PCI_CHIP_I965_Q: 124 chipset = "Intel(R) 965Q"; 125 break; 126 case PCI_CHIP_I965_G: 127 case PCI_CHIP_I965_G_1: 128 chipset = "Intel(R) 965G"; 129 break; 130 case PCI_CHIP_I946_GZ: 131 chipset = "Intel(R) 946GZ"; 132 break; 133 case PCI_CHIP_I965_GM: 134 chipset = "Intel(R) 965GM"; 135 break; 136 case PCI_CHIP_I965_GME: 137 chipset = "Intel(R) 965GME/GLE"; 138 break; 139 case PCI_CHIP_GM45_GM: 140 chipset = "Mobile Intel® GM45 Express Chipset"; 141 break; 142 case PCI_CHIP_IGD_E_G: 143 chipset = "Intel(R) Integrated Graphics Device"; 144 break; 145 case PCI_CHIP_G45_G: 146 chipset = "Intel(R) G45/G43"; 147 break; 148 case PCI_CHIP_Q45_G: 149 chipset = "Intel(R) Q45/Q43"; 150 break; 151 case PCI_CHIP_G41_G: 152 chipset = "Intel(R) G41"; 153 break; 154 case PCI_CHIP_B43_G: 155 case PCI_CHIP_B43_G1: 156 chipset = "Intel(R) B43"; 157 break; 158 case PCI_CHIP_ILD_G: 159 chipset = "Intel(R) Ironlake Desktop"; 160 break; 161 case PCI_CHIP_ILM_G: 162 chipset = "Intel(R) Ironlake Mobile"; 163 break; 164 case PCI_CHIP_SANDYBRIDGE_GT1: 165 case PCI_CHIP_SANDYBRIDGE_GT2: 166 case PCI_CHIP_SANDYBRIDGE_GT2_PLUS: 167 chipset = "Intel(R) Sandybridge Desktop"; 168 break; 169 case PCI_CHIP_SANDYBRIDGE_M_GT1: 170 case PCI_CHIP_SANDYBRIDGE_M_GT2: 171 case PCI_CHIP_SANDYBRIDGE_M_GT2_PLUS: 172 chipset = "Intel(R) Sandybridge Mobile"; 173 break; 174 case PCI_CHIP_SANDYBRIDGE_S: 175 chipset = "Intel(R) Sandybridge Server"; 176 break; 177 case PCI_CHIP_IVYBRIDGE_GT1: 178 case PCI_CHIP_IVYBRIDGE_GT2: 179 chipset = "Intel(R) Ivybridge Desktop"; 180 break; 181 case PCI_CHIP_IVYBRIDGE_M_GT1: 182 case PCI_CHIP_IVYBRIDGE_M_GT2: 183 chipset = "Intel(R) Ivybridge Mobile"; 184 break; 185 case PCI_CHIP_IVYBRIDGE_S_GT1: 186 chipset = "Intel(R) Ivybridge Server"; 187 break; 188 default: 189 chipset = "Unknown Intel Chipset"; 190 break; 191 } 192 193 (void) driGetRendererString(buffer, chipset, 0); 194 return (GLubyte *) buffer; 195 196 default: 197 return NULL; 198 } 199} 200 201static void 202intel_flush_front(struct gl_context *ctx) 203{ 204 struct intel_context *intel = intel_context(ctx); 205 __DRIcontext *driContext = intel->driContext; 206 __DRIscreen *const screen = intel->intelScreen->driScrnPriv; 207 208 if ((ctx->DrawBuffer->Name == 0) && intel->front_buffer_dirty) { 209 if (screen->dri2.loader && 210 (screen->dri2.loader->base.version >= 2) 211 && (screen->dri2.loader->flushFrontBuffer != NULL) && 212 driContext->driDrawablePriv && 213 driContext->driDrawablePriv->loaderPrivate) { 214 (*screen->dri2.loader->flushFrontBuffer)(driContext->driDrawablePriv, 215 driContext->driDrawablePriv->loaderPrivate); 216 217 /* We set the dirty bit in intel_prepare_render() if we're 218 * front buffer rendering once we get there. 219 */ 220 intel->front_buffer_dirty = GL_FALSE; 221 } 222 } 223} 224 225static unsigned 226intel_bits_per_pixel(const struct intel_renderbuffer *rb) 227{ 228 return _mesa_get_format_bytes(rb->Base.Format) * 8; 229} 230 231static void 232intel_query_dri2_buffers_no_separate_stencil(struct intel_context *intel, 233 __DRIdrawable *drawable, 234 __DRIbuffer **buffers, 235 int *count); 236 237static void 238intel_process_dri2_buffer_no_separate_stencil(struct intel_context *intel, 239 __DRIdrawable *drawable, 240 __DRIbuffer *buffer, 241 struct intel_renderbuffer *rb, 242 const char *buffer_name); 243 244static void 245intel_query_dri2_buffers_with_separate_stencil(struct intel_context *intel, 246 __DRIdrawable *drawable, 247 __DRIbuffer **buffers, 248 unsigned **attachments, 249 int *count); 250 251static void 252intel_process_dri2_buffer_with_separate_stencil(struct intel_context *intel, 253 __DRIdrawable *drawable, 254 __DRIbuffer *buffer, 255 struct intel_renderbuffer *rb, 256 const char *buffer_name); 257static void 258intel_verify_dri2_has_hiz(struct intel_context *intel, 259 __DRIdrawable *drawable, 260 __DRIbuffer **buffers, 261 unsigned **attachments, 262 int *count); 263 264void 265intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable) 266{ 267 struct gl_framebuffer *fb = drawable->driverPrivate; 268 struct intel_renderbuffer *rb; 269 struct intel_context *intel = context->driverPrivate; 270 __DRIbuffer *buffers = NULL; 271 unsigned *attachments = NULL; 272 int i, count; 273 const char *region_name; 274 275 bool try_separate_stencil = 276 intel->has_separate_stencil && 277 intel->intelScreen->dri2_has_hiz != INTEL_DRI2_HAS_HIZ_FALSE && 278 intel->intelScreen->driScrnPriv->dri2.loader != NULL && 279 intel->intelScreen->driScrnPriv->dri2.loader->base.version > 2 && 280 intel->intelScreen->driScrnPriv->dri2.loader->getBuffersWithFormat != NULL; 281 282 assert(!intel->must_use_separate_stencil || try_separate_stencil); 283 284 /* If we're rendering to the fake front buffer, make sure all the 285 * pending drawing has landed on the real front buffer. Otherwise 286 * when we eventually get to DRI2GetBuffersWithFormat the stale 287 * real front buffer contents will get copied to the new fake front 288 * buffer. 289 */ 290 if (intel->is_front_buffer_rendering) { 291 intel_flush(&intel->ctx); 292 intel_flush_front(&intel->ctx); 293 } 294 295 /* Set this up front, so that in case our buffers get invalidated 296 * while we're getting new buffers, we don't clobber the stamp and 297 * thus ignore the invalidate. */ 298 drawable->lastStamp = drawable->dri2.stamp; 299 300 if (unlikely(INTEL_DEBUG & DEBUG_DRI)) 301 fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable); 302 303 if (try_separate_stencil) { 304 intel_query_dri2_buffers_with_separate_stencil(intel, drawable, &buffers, 305 &attachments, &count); 306 } else { 307 intel_query_dri2_buffers_no_separate_stencil(intel, drawable, &buffers, 308 &count); 309 } 310 311 if (buffers == NULL) 312 return; 313 314 drawable->x = 0; 315 drawable->y = 0; 316 drawable->backX = 0; 317 drawable->backY = 0; 318 drawable->numClipRects = 1; 319 drawable->pClipRects[0].x1 = 0; 320 drawable->pClipRects[0].y1 = 0; 321 drawable->pClipRects[0].x2 = drawable->w; 322 drawable->pClipRects[0].y2 = drawable->h; 323 drawable->numBackClipRects = 1; 324 drawable->pBackClipRects[0].x1 = 0; 325 drawable->pBackClipRects[0].y1 = 0; 326 drawable->pBackClipRects[0].x2 = drawable->w; 327 drawable->pBackClipRects[0].y2 = drawable->h; 328 329 for (i = 0; i < count; i++) { 330 switch (buffers[i].attachment) { 331 case __DRI_BUFFER_FRONT_LEFT: 332 rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT); 333 region_name = "dri2 front buffer"; 334 break; 335 336 case __DRI_BUFFER_FAKE_FRONT_LEFT: 337 rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT); 338 region_name = "dri2 fake front buffer"; 339 break; 340 341 case __DRI_BUFFER_BACK_LEFT: 342 rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT); 343 region_name = "dri2 back buffer"; 344 break; 345 346 case __DRI_BUFFER_DEPTH: 347 rb = intel_get_renderbuffer(fb, BUFFER_DEPTH); 348 region_name = "dri2 depth buffer"; 349 break; 350 351 case __DRI_BUFFER_HIZ: 352 /* The hiz region resides in the depth renderbuffer. */ 353 rb = intel_get_renderbuffer(fb, BUFFER_DEPTH); 354 region_name = "dri2 hiz buffer"; 355 break; 356 357 case __DRI_BUFFER_DEPTH_STENCIL: 358 rb = intel_get_renderbuffer(fb, BUFFER_DEPTH); 359 region_name = "dri2 depth / stencil buffer"; 360 break; 361 362 case __DRI_BUFFER_STENCIL: 363 rb = intel_get_renderbuffer(fb, BUFFER_STENCIL); 364 region_name = "dri2 stencil buffer"; 365 break; 366 367 case __DRI_BUFFER_ACCUM: 368 default: 369 fprintf(stderr, 370 "unhandled buffer attach event, attachment type %d\n", 371 buffers[i].attachment); 372 return; 373 } 374 375 if (try_separate_stencil) { 376 intel_process_dri2_buffer_with_separate_stencil(intel, drawable, 377 &buffers[i], rb, 378 region_name); 379 } else { 380 intel_process_dri2_buffer_no_separate_stencil(intel, drawable, 381 &buffers[i], rb, 382 region_name); 383 } 384 } 385 386 if (try_separate_stencil 387 && intel->intelScreen->dri2_has_hiz == INTEL_DRI2_HAS_HIZ_UNKNOWN) { 388 intel_verify_dri2_has_hiz(intel, drawable, &buffers, &attachments, 389 &count); 390 } 391 392 if (attachments) 393 free(attachments); 394 395 driUpdateFramebufferSize(&intel->ctx, drawable); 396} 397 398/** 399 * intel_prepare_render should be called anywhere that curent read/drawbuffer 400 * state is required. 401 */ 402void 403intel_prepare_render(struct intel_context *intel) 404{ 405 __DRIcontext *driContext = intel->driContext; 406 __DRIdrawable *drawable; 407 408 drawable = driContext->driDrawablePriv; 409 if (drawable && drawable->dri2.stamp != driContext->dri2.draw_stamp) { 410 if (drawable->lastStamp != drawable->dri2.stamp) 411 intel_update_renderbuffers(driContext, drawable); 412 intel_draw_buffer(&intel->ctx, intel->ctx.DrawBuffer); 413 driContext->dri2.draw_stamp = drawable->dri2.stamp; 414 } 415 416 drawable = driContext->driReadablePriv; 417 if (drawable && drawable->dri2.stamp != driContext->dri2.read_stamp) { 418 if (drawable->lastStamp != drawable->dri2.stamp) 419 intel_update_renderbuffers(driContext, drawable); 420 driContext->dri2.read_stamp = drawable->dri2.stamp; 421 } 422 423 /* If we're currently rendering to the front buffer, the rendering 424 * that will happen next will probably dirty the front buffer. So 425 * mark it as dirty here. 426 */ 427 if (intel->is_front_buffer_rendering) 428 intel->front_buffer_dirty = GL_TRUE; 429 430 /* Wait for the swapbuffers before the one we just emitted, so we 431 * don't get too many swaps outstanding for apps that are GPU-heavy 432 * but not CPU-heavy. 433 * 434 * We're using intelDRI2Flush (called from the loader before 435 * swapbuffer) and glFlush (for front buffer rendering) as the 436 * indicator that a frame is done and then throttle when we get 437 * here as we prepare to render the next frame. At this point for 438 * round trips for swap/copy and getting new buffers are done and 439 * we'll spend less time waiting on the GPU. 440 * 441 * Unfortunately, we don't have a handle to the batch containing 442 * the swap, and getting our hands on that doesn't seem worth it, 443 * so we just us the first batch we emitted after the last swap. 444 */ 445 if (intel->need_throttle && intel->first_post_swapbuffers_batch) { 446 drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch); 447 drm_intel_bo_unreference(intel->first_post_swapbuffers_batch); 448 intel->first_post_swapbuffers_batch = NULL; 449 intel->need_throttle = GL_FALSE; 450 } 451} 452 453static void 454intel_viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h) 455{ 456 struct intel_context *intel = intel_context(ctx); 457 __DRIcontext *driContext = intel->driContext; 458 459 if (intel->saved_viewport) 460 intel->saved_viewport(ctx, x, y, w, h); 461 462 if (ctx->DrawBuffer->Name == 0) { 463 dri2InvalidateDrawable(driContext->driDrawablePriv); 464 dri2InvalidateDrawable(driContext->driReadablePriv); 465 } 466} 467 468static const struct dri_debug_control debug_control[] = { 469 { "tex", DEBUG_TEXTURE}, 470 { "state", DEBUG_STATE}, 471 { "ioctl", DEBUG_IOCTL}, 472 { "blit", DEBUG_BLIT}, 473 { "mip", DEBUG_MIPTREE}, 474 { "fall", DEBUG_FALLBACKS}, 475 { "verb", DEBUG_VERBOSE}, 476 { "bat", DEBUG_BATCH}, 477 { "pix", DEBUG_PIXEL}, 478 { "buf", DEBUG_BUFMGR}, 479 { "reg", DEBUG_REGION}, 480 { "fbo", DEBUG_FBO}, 481 { "gs", DEBUG_GS}, 482 { "sync", DEBUG_SYNC}, 483 { "prim", DEBUG_PRIMS }, 484 { "vert", DEBUG_VERTS }, 485 { "dri", DEBUG_DRI }, 486 { "sf", DEBUG_SF }, 487 { "san", DEBUG_SANITY }, 488 { "sleep", DEBUG_SLEEP }, 489 { "stats", DEBUG_STATS }, 490 { "tile", DEBUG_TILE }, 491 { "sing", DEBUG_SINGLE_THREAD }, 492 { "thre", DEBUG_SINGLE_THREAD }, 493 { "wm", DEBUG_WM }, 494 { "urb", DEBUG_URB }, 495 { "vs", DEBUG_VS }, 496 { "clip", DEBUG_CLIP }, 497 { NULL, 0 } 498}; 499 500 501static void 502intelInvalidateState(struct gl_context * ctx, GLuint new_state) 503{ 504 struct intel_context *intel = intel_context(ctx); 505 506 _swrast_InvalidateState(ctx, new_state); 507 _vbo_InvalidateState(ctx, new_state); 508 509 intel->NewGLState |= new_state; 510 511 if (intel->vtbl.invalidate_state) 512 intel->vtbl.invalidate_state( intel, new_state ); 513} 514 515void 516intel_flush(struct gl_context *ctx) 517{ 518 struct intel_context *intel = intel_context(ctx); 519 520 if (intel->Fallback) 521 _swrast_flush(ctx); 522 523 if (intel->gen < 4) 524 INTEL_FIREVERTICES(intel); 525 526 if (intel->batch.used) 527 intel_batchbuffer_flush(intel); 528} 529 530static void 531intel_glFlush(struct gl_context *ctx) 532{ 533 struct intel_context *intel = intel_context(ctx); 534 535 intel_flush(ctx); 536 intel_flush_front(ctx); 537 if (intel->is_front_buffer_rendering) 538 intel->need_throttle = GL_TRUE; 539} 540 541void 542intelFinish(struct gl_context * ctx) 543{ 544 struct intel_context *intel = intel_context(ctx); 545 546 intel_flush(ctx); 547 intel_flush_front(ctx); 548 549 if (intel->batch.last_bo) 550 drm_intel_bo_wait_rendering(intel->batch.last_bo); 551} 552 553void 554intelInitDriverFunctions(struct dd_function_table *functions) 555{ 556 _mesa_init_driver_functions(functions); 557 558 functions->Flush = intel_glFlush; 559 functions->Finish = intelFinish; 560 functions->GetString = intelGetString; 561 functions->UpdateState = intelInvalidateState; 562 563 intelInitTextureFuncs(functions); 564 intelInitTextureImageFuncs(functions); 565 intelInitTextureSubImageFuncs(functions); 566 intelInitTextureCopyImageFuncs(functions); 567 intelInitStateFuncs(functions); 568 intelInitClearFuncs(functions); 569 intelInitBufferFuncs(functions); 570 intelInitPixelFuncs(functions); 571 intelInitBufferObjectFuncs(functions); 572 intel_init_syncobj_functions(functions); 573} 574 575GLboolean 576intelInitContext(struct intel_context *intel, 577 int api, 578 const struct gl_config * mesaVis, 579 __DRIcontext * driContextPriv, 580 void *sharedContextPrivate, 581 struct dd_function_table *functions) 582{ 583 struct gl_context *ctx = &intel->ctx; 584 struct gl_context *shareCtx = (struct gl_context *) sharedContextPrivate; 585 __DRIscreen *sPriv = driContextPriv->driScreenPriv; 586 struct intel_screen *intelScreen = sPriv->private; 587 int bo_reuse_mode; 588 struct gl_config visual; 589 590 /* we can't do anything without a connection to the device */ 591 if (intelScreen->bufmgr == NULL) 592 return GL_FALSE; 593 594 /* Can't rely on invalidate events, fall back to glViewport hack */ 595 if (!driContextPriv->driScreenPriv->dri2.useInvalidate) { 596 intel->saved_viewport = functions->Viewport; 597 functions->Viewport = intel_viewport; 598 } 599 600 if (mesaVis == NULL) { 601 memset(&visual, 0, sizeof visual); 602 mesaVis = &visual; 603 } 604 605 if (!_mesa_initialize_context(&intel->ctx, api, mesaVis, shareCtx, 606 functions, (void *) intel)) { 607 printf("%s: failed to init mesa context\n", __FUNCTION__); 608 return GL_FALSE; 609 } 610 611 driContextPriv->driverPrivate = intel; 612 intel->intelScreen = intelScreen; 613 intel->driContext = driContextPriv; 614 intel->driFd = sPriv->fd; 615 616 intel->has_xrgb_textures = GL_TRUE; 617 intel->gen = intelScreen->gen; 618 if (IS_GEN7(intel->intelScreen->deviceID)) { 619 intel->needs_ff_sync = GL_TRUE; 620 intel->has_luminance_srgb = GL_TRUE; 621 } else if (IS_GEN6(intel->intelScreen->deviceID)) { 622 intel->needs_ff_sync = GL_TRUE; 623 intel->has_luminance_srgb = GL_TRUE; 624 } else if (IS_GEN5(intel->intelScreen->deviceID)) { 625 intel->needs_ff_sync = GL_TRUE; 626 intel->has_luminance_srgb = GL_TRUE; 627 } else if (IS_965(intel->intelScreen->deviceID)) { 628 if (IS_G4X(intel->intelScreen->deviceID)) { 629 intel->has_luminance_srgb = GL_TRUE; 630 intel->is_g4x = GL_TRUE; 631 } 632 } else if (IS_9XX(intel->intelScreen->deviceID)) { 633 if (IS_945(intel->intelScreen->deviceID)) { 634 intel->is_945 = GL_TRUE; 635 } 636 } else { 637 if (intel->intelScreen->deviceID == PCI_CHIP_I830_M || 638 intel->intelScreen->deviceID == PCI_CHIP_845_G) { 639 intel->has_xrgb_textures = GL_FALSE; 640 } 641 } 642 643 intel->has_separate_stencil = intel->intelScreen->hw_has_separate_stencil; 644 intel->must_use_separate_stencil = intel->intelScreen->hw_must_use_separate_stencil; 645 intel->has_hiz = intel->intelScreen->hw_has_hiz; 646 647 memset(&ctx->TextureFormatSupported, 0, 648 sizeof(ctx->TextureFormatSupported)); 649 ctx->TextureFormatSupported[MESA_FORMAT_ARGB8888] = GL_TRUE; 650 if (intel->has_xrgb_textures) 651 ctx->TextureFormatSupported[MESA_FORMAT_XRGB8888] = GL_TRUE; 652 ctx->TextureFormatSupported[MESA_FORMAT_ARGB4444] = GL_TRUE; 653 ctx->TextureFormatSupported[MESA_FORMAT_ARGB1555] = GL_TRUE; 654 ctx->TextureFormatSupported[MESA_FORMAT_RGB565] = GL_TRUE; 655 ctx->TextureFormatSupported[MESA_FORMAT_L8] = GL_TRUE; 656 ctx->TextureFormatSupported[MESA_FORMAT_A8] = GL_TRUE; 657 ctx->TextureFormatSupported[MESA_FORMAT_I8] = GL_TRUE; 658 ctx->TextureFormatSupported[MESA_FORMAT_AL88] = GL_TRUE; 659 if (intel->gen >= 4) 660 ctx->TextureFormatSupported[MESA_FORMAT_AL1616] = GL_TRUE; 661 662 /* Depth and stencil */ 663 ctx->TextureFormatSupported[MESA_FORMAT_S8_Z24] = GL_TRUE; 664 ctx->TextureFormatSupported[MESA_FORMAT_X8_Z24] = GL_TRUE; 665 ctx->TextureFormatSupported[MESA_FORMAT_S8] = intel->has_separate_stencil; 666 667 /* 668 * This was disabled in initial FBO enabling to avoid combinations 669 * of depth+stencil that wouldn't work together. We since decided 670 * that it was OK, since it's up to the app to come up with the 671 * combo that actually works, so this can probably be re-enabled. 672 */ 673 /* 674 ctx->TextureFormatSupported[MESA_FORMAT_Z16] = GL_TRUE; 675 ctx->TextureFormatSupported[MESA_FORMAT_Z24] = GL_TRUE; 676 */ 677 678 /* ctx->Extensions.MESA_ycbcr_texture */ 679 ctx->TextureFormatSupported[MESA_FORMAT_YCBCR] = GL_TRUE; 680 ctx->TextureFormatSupported[MESA_FORMAT_YCBCR_REV] = GL_TRUE; 681 682 /* GL_3DFX_texture_compression_FXT1 */ 683 ctx->TextureFormatSupported[MESA_FORMAT_RGB_FXT1] = GL_TRUE; 684 ctx->TextureFormatSupported[MESA_FORMAT_RGBA_FXT1] = GL_TRUE; 685 686 /* GL_EXT_texture_compression_s3tc */ 687 ctx->TextureFormatSupported[MESA_FORMAT_RGB_DXT1] = GL_TRUE; 688 ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT1] = GL_TRUE; 689 ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT3] = GL_TRUE; 690 ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT5] = GL_TRUE; 691 692#ifndef I915 693 /* GL_ARB_texture_compression_rgtc */ 694 ctx->TextureFormatSupported[MESA_FORMAT_RED_RGTC1] = GL_TRUE; 695 ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_RED_RGTC1] = GL_TRUE; 696 ctx->TextureFormatSupported[MESA_FORMAT_RG_RGTC2] = GL_TRUE; 697 ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_RG_RGTC2] = GL_TRUE; 698 699 /* GL_ARB_texture_rg */ 700 ctx->TextureFormatSupported[MESA_FORMAT_R8] = GL_TRUE; 701 ctx->TextureFormatSupported[MESA_FORMAT_R16] = GL_TRUE; 702 ctx->TextureFormatSupported[MESA_FORMAT_RG88] = GL_TRUE; 703 ctx->TextureFormatSupported[MESA_FORMAT_RG1616] = GL_TRUE; 704 705 /* GL_MESA_texture_signed_rgba / GL_EXT_texture_snorm */ 706 ctx->TextureFormatSupported[MESA_FORMAT_DUDV8] = GL_TRUE; 707 ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_RGBA8888_REV] = GL_TRUE; 708 ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_R8] = GL_TRUE; 709 ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_RG88_REV] = GL_TRUE; 710 ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_R16] = GL_TRUE; 711 ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_GR1616] = GL_TRUE; 712 713 /* GL_EXT_texture_sRGB */ 714 ctx->TextureFormatSupported[MESA_FORMAT_SARGB8] = GL_TRUE; 715 if (intel->gen >= 5 || intel->is_g4x) 716 ctx->TextureFormatSupported[MESA_FORMAT_SRGB_DXT1] = GL_TRUE; 717 ctx->TextureFormatSupported[MESA_FORMAT_SRGBA_DXT1] = GL_TRUE; 718 ctx->TextureFormatSupported[MESA_FORMAT_SRGBA_DXT3] = GL_TRUE; 719 ctx->TextureFormatSupported[MESA_FORMAT_SRGBA_DXT5] = GL_TRUE; 720 if (intel->has_luminance_srgb) { 721 ctx->TextureFormatSupported[MESA_FORMAT_SL8] = GL_TRUE; 722 ctx->TextureFormatSupported[MESA_FORMAT_SLA8] = GL_TRUE; 723 } 724 725#ifdef TEXTURE_FLOAT_ENABLED 726 ctx->TextureFormatSupported[MESA_FORMAT_RGBA_FLOAT32] = GL_TRUE; 727 ctx->TextureFormatSupported[MESA_FORMAT_RG_FLOAT32] = GL_TRUE; 728 ctx->TextureFormatSupported[MESA_FORMAT_R_FLOAT32] = GL_TRUE; 729 ctx->TextureFormatSupported[MESA_FORMAT_INTENSITY_FLOAT32] = GL_TRUE; 730 ctx->TextureFormatSupported[MESA_FORMAT_LUMINANCE_FLOAT32] = GL_TRUE; 731 ctx->TextureFormatSupported[MESA_FORMAT_ALPHA_FLOAT32] = GL_TRUE; 732 ctx->TextureFormatSupported[MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32] = GL_TRUE; 733#endif 734 735#endif /* !I915 */ 736 737 driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache, 738 sPriv->myNum, (intel->gen >= 4) ? "i965" : "i915"); 739 if (intel->gen < 4) 740 intel->maxBatchSize = 4096; 741 else 742 intel->maxBatchSize = sizeof(intel->batch.map); 743 744 intel->bufmgr = intelScreen->bufmgr; 745 746 bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse"); 747 switch (bo_reuse_mode) { 748 case DRI_CONF_BO_REUSE_DISABLED: 749 break; 750 case DRI_CONF_BO_REUSE_ALL: 751 intel_bufmgr_gem_enable_reuse(intel->bufmgr); 752 break; 753 } 754 755 /* This doesn't yet catch all non-conformant rendering, but it's a 756 * start. 757 */ 758 if (getenv("INTEL_STRICT_CONFORMANCE")) { 759 unsigned int value = atoi(getenv("INTEL_STRICT_CONFORMANCE")); 760 if (value > 0) { 761 intel->conformance_mode = value; 762 } 763 else { 764 intel->conformance_mode = 1; 765 } 766 } 767 768 if (intel->conformance_mode > 0) { 769 ctx->Const.MinLineWidth = 1.0; 770 ctx->Const.MinLineWidthAA = 1.0; 771 ctx->Const.MaxLineWidth = 1.0; 772 ctx->Const.MaxLineWidthAA = 1.0; 773 ctx->Const.LineWidthGranularity = 1.0; 774 } 775 else { 776 ctx->Const.MinLineWidth = 1.0; 777 ctx->Const.MinLineWidthAA = 1.0; 778 ctx->Const.MaxLineWidth = 5.0; 779 ctx->Const.MaxLineWidthAA = 5.0; 780 ctx->Const.LineWidthGranularity = 0.5; 781 } 782 783 ctx->Const.MinPointSize = 1.0; 784 ctx->Const.MinPointSizeAA = 1.0; 785 ctx->Const.MaxPointSize = 255.0; 786 ctx->Const.MaxPointSizeAA = 3.0; 787 ctx->Const.PointSizeGranularity = 1.0; 788 789 ctx->Const.MaxSamples = 1.0; 790 791 /* reinitialize the context point state. 792 * It depend on constants in __struct gl_contextRec::Const 793 */ 794 _mesa_init_point(ctx); 795 796 if (intel->gen >= 4) { 797 ctx->Const.sRGBCapable = GL_TRUE; 798 if (MAX_WIDTH > 8192) 799 ctx->Const.MaxRenderbufferSize = 8192; 800 } else { 801 if (MAX_WIDTH > 2048) 802 ctx->Const.MaxRenderbufferSize = 2048; 803 } 804 805 /* Initialize the software rasterizer and helper modules. */ 806 _swrast_CreateContext(ctx); 807 _vbo_CreateContext(ctx); 808 _tnl_CreateContext(ctx); 809 _swsetup_CreateContext(ctx); 810 811 /* Configure swrast to match hardware characteristics: */ 812 _swrast_allow_pixel_fog(ctx, GL_FALSE); 813 _swrast_allow_vertex_fog(ctx, GL_TRUE); 814 815 _mesa_meta_init(ctx); 816 817 intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24; 818 intel->hw_stipple = 1; 819 820 /* XXX FBO: this doesn't seem to be used anywhere */ 821 switch (mesaVis->depthBits) { 822 case 0: /* what to do in this case? */ 823 case 16: 824 intel->polygon_offset_scale = 1.0; 825 break; 826 case 24: 827 intel->polygon_offset_scale = 2.0; /* req'd to pass glean */ 828 break; 829 default: 830 assert(0); 831 break; 832 } 833 834 if (intel->gen >= 4) 835 intel->polygon_offset_scale /= 0xffff; 836 837 intel->RenderIndex = ~0; 838 839 switch (ctx->API) { 840 case API_OPENGL: 841 intelInitExtensions(ctx); 842 break; 843 case API_OPENGLES: 844 intelInitExtensionsES1(ctx); 845 break; 846 case API_OPENGLES2: 847 intelInitExtensionsES2(ctx); 848 break; 849 } 850 851 INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control); 852 if (INTEL_DEBUG & DEBUG_BUFMGR) 853 dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE); 854 855 intel_batchbuffer_init(intel); 856 857 intel_fbo_init(intel); 858 859 if (intel->ctx.Mesa_DXTn) { 860 _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc"); 861 _mesa_enable_extension(ctx, "GL_S3_s3tc"); 862 } 863 else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) { 864 _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc"); 865 } 866 intel->use_texture_tiling = driQueryOptionb(&intel->optionCache, 867 "texture_tiling"); 868 intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z"); 869 870 intel->prim.primitive = ~0; 871 872 /* Force all software fallbacks */ 873 if (driQueryOptionb(&intel->optionCache, "no_rast")) { 874 fprintf(stderr, "disabling 3D rasterization\n"); 875 intel->no_rast = 1; 876 } 877 878 if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) { 879 fprintf(stderr, "flushing batchbuffer before/after each draw call\n"); 880 intel->always_flush_batch = 1; 881 } 882 883 if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) { 884 fprintf(stderr, "flushing GPU caches before/after each draw call\n"); 885 intel->always_flush_cache = 1; 886 } 887 888 return GL_TRUE; 889} 890 891void 892intelDestroyContext(__DRIcontext * driContextPriv) 893{ 894 struct intel_context *intel = 895 (struct intel_context *) driContextPriv->driverPrivate; 896 897 assert(intel); /* should never be null */ 898 if (intel) { 899 INTEL_FIREVERTICES(intel); 900 901 _mesa_meta_free(&intel->ctx); 902 903 intel->vtbl.destroy(intel); 904 905 _swsetup_DestroyContext(&intel->ctx); 906 _tnl_DestroyContext(&intel->ctx); 907 _vbo_DestroyContext(&intel->ctx); 908 909 _swrast_DestroyContext(&intel->ctx); 910 intel->Fallback = 0x0; /* don't call _swrast_Flush later */ 911 912 intel_batchbuffer_free(intel); 913 914 free(intel->prim.vb); 915 intel->prim.vb = NULL; 916 drm_intel_bo_unreference(intel->prim.vb_bo); 917 intel->prim.vb_bo = NULL; 918 drm_intel_bo_unreference(intel->first_post_swapbuffers_batch); 919 intel->first_post_swapbuffers_batch = NULL; 920 921 driDestroyOptionCache(&intel->optionCache); 922 923 /* free the Mesa context */ 924 _mesa_free_context_data(&intel->ctx); 925 926 _math_matrix_dtr(&intel->ViewportMatrix); 927 928 ralloc_free(intel); 929 driContextPriv->driverPrivate = NULL; 930 } 931} 932 933GLboolean 934intelUnbindContext(__DRIcontext * driContextPriv) 935{ 936 /* Unset current context and dispath table */ 937 _mesa_make_current(NULL, NULL, NULL); 938 939 return GL_TRUE; 940} 941 942GLboolean 943intelMakeCurrent(__DRIcontext * driContextPriv, 944 __DRIdrawable * driDrawPriv, 945 __DRIdrawable * driReadPriv) 946{ 947 struct intel_context *intel; 948 GET_CURRENT_CONTEXT(curCtx); 949 950 if (driContextPriv) 951 intel = (struct intel_context *) driContextPriv->driverPrivate; 952 else 953 intel = NULL; 954 955 /* According to the glXMakeCurrent() man page: "Pending commands to 956 * the previous context, if any, are flushed before it is released." 957 * But only flush if we're actually changing contexts. 958 */ 959 if (intel_context(curCtx) && intel_context(curCtx) != intel) { 960 _mesa_flush(curCtx); 961 } 962 963 if (driContextPriv) { 964 struct gl_framebuffer *fb, *readFb; 965 966 if (driDrawPriv == NULL && driReadPriv == NULL) { 967 fb = _mesa_get_incomplete_framebuffer(); 968 readFb = _mesa_get_incomplete_framebuffer(); 969 } else { 970 fb = driDrawPriv->driverPrivate; 971 readFb = driReadPriv->driverPrivate; 972 driContextPriv->dri2.draw_stamp = driDrawPriv->dri2.stamp - 1; 973 driContextPriv->dri2.read_stamp = driReadPriv->dri2.stamp - 1; 974 } 975 976 intel_prepare_render(intel); 977 _mesa_make_current(&intel->ctx, fb, readFb); 978 979 /* We do this in intel_prepare_render() too, but intel->ctx.DrawBuffer 980 * is NULL at that point. We can't call _mesa_makecurrent() 981 * first, since we need the buffer size for the initial 982 * viewport. So just call intel_draw_buffer() again here. */ 983 intel_draw_buffer(&intel->ctx, intel->ctx.DrawBuffer); 984 } 985 else { 986 _mesa_make_current(NULL, NULL, NULL); 987 } 988 989 return GL_TRUE; 990} 991 992/** 993 * \brief Query DRI2 to obtain a DRIdrawable's buffers. 994 * 995 * To determine which DRI buffers to request, examine the renderbuffers 996 * attached to the drawable's framebuffer. Then request the buffers with 997 * DRI2GetBuffers() or DRI2GetBuffersWithFormat(). 998 * 999 * This is called from intel_update_renderbuffers(). It is used only if either 1000 * the hardware or the X driver lacks separate stencil support. 1001 * 1002 * \param drawable Drawable whose buffers are queried. 1003 * \param buffers [out] List of buffers returned by DRI2 query. 1004 * \param buffer_count [out] Number of buffers returned. 1005 * 1006 * \see intel_update_renderbuffers() 1007 * \see DRI2GetBuffers() 1008 * \see DRI2GetBuffersWithFormat() 1009 */ 1010static void 1011intel_query_dri2_buffers_no_separate_stencil(struct intel_context *intel, 1012 __DRIdrawable *drawable, 1013 __DRIbuffer **buffers, 1014 int *buffer_count) 1015{ 1016 assert(!intel->must_use_separate_stencil); 1017 1018 __DRIscreen *screen = intel->intelScreen->driScrnPriv; 1019 struct gl_framebuffer *fb = drawable->driverPrivate; 1020 1021 if (screen->dri2.loader 1022 && screen->dri2.loader->base.version > 2 1023 && screen->dri2.loader->getBuffersWithFormat != NULL) { 1024 1025 int i = 0; 1026 const int max_attachments = 4; 1027 unsigned *attachments = calloc(2 * max_attachments, sizeof(unsigned)); 1028 1029 struct intel_renderbuffer *front_rb; 1030 struct intel_renderbuffer *back_rb; 1031 struct intel_renderbuffer *depth_rb; 1032 struct intel_renderbuffer *stencil_rb; 1033 1034 front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT); 1035 back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT); 1036 depth_rb = intel_get_renderbuffer(fb, BUFFER_DEPTH); 1037 stencil_rb = intel_get_renderbuffer(fb, BUFFER_STENCIL); 1038 1039 if ((intel->is_front_buffer_rendering || 1040 intel->is_front_buffer_reading || 1041 !back_rb) && front_rb) { 1042 attachments[i++] = __DRI_BUFFER_FRONT_LEFT; 1043 attachments[i++] = intel_bits_per_pixel(front_rb); 1044 } 1045 1046 if (back_rb) { 1047 attachments[i++] = __DRI_BUFFER_BACK_LEFT; 1048 attachments[i++] = intel_bits_per_pixel(back_rb); 1049 } 1050 1051 if (depth_rb && stencil_rb) { 1052 attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL; 1053 attachments[i++] = intel_bits_per_pixel(depth_rb); 1054 } else if (depth_rb) { 1055 attachments[i++] = __DRI_BUFFER_DEPTH; 1056 attachments[i++] = intel_bits_per_pixel(depth_rb); 1057 } else if (stencil_rb) { 1058 attachments[i++] = __DRI_BUFFER_STENCIL; 1059 attachments[i++] = intel_bits_per_pixel(stencil_rb); 1060 } 1061 1062 assert(i <= 2 * max_attachments); 1063 1064 *buffers = screen->dri2.loader->getBuffersWithFormat(drawable, 1065 &drawable->w, 1066 &drawable->h, 1067 attachments, i / 2, 1068 buffer_count, 1069 drawable->loaderPrivate); 1070 free(attachments); 1071 1072 } else if (screen->dri2.loader) { 1073 1074 int i = 0; 1075 const int max_attachments = 4; 1076 unsigned *attachments = calloc(max_attachments, sizeof(unsigned)); 1077 1078 if (intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT)) 1079 attachments[i++] = __DRI_BUFFER_FRONT_LEFT; 1080 if (intel_get_renderbuffer(fb, BUFFER_BACK_LEFT)) 1081 attachments[i++] = __DRI_BUFFER_BACK_LEFT; 1082 if (intel_get_renderbuffer(fb, BUFFER_DEPTH)) 1083 attachments[i++] = __DRI_BUFFER_DEPTH; 1084 if (intel_get_renderbuffer(fb, BUFFER_STENCIL)) 1085 attachments[i++] = __DRI_BUFFER_STENCIL; 1086 1087 assert(i <= max_attachments); 1088 1089 *buffers = screen->dri2.loader->getBuffersWithFormat(drawable, 1090 &drawable->w, 1091 &drawable->h, 1092 attachments, i, 1093 buffer_count, 1094 drawable->loaderPrivate); 1095 free(attachments); 1096 1097 } else { 1098 *buffers = NULL; 1099 *buffer_count = 0; 1100 } 1101} 1102 1103/** 1104 * \brief Assign a DRI buffer's DRM region to a renderbuffer. 1105 * 1106 * This is called from intel_update_renderbuffers(). It is used only if 1107 * either the hardware or the X driver lacks separate stencil support. 1108 * 1109 * \par Note: 1110 * DRI buffers whose attachment point is DRI2BufferStencil or 1111 * DRI2BufferDepthStencil are handled as special cases. 1112 * 1113 * \param buffer_name is a human readable name, such as "dri2 front buffer", 1114 * that is passed to intel_region_alloc_for_handle(). 1115 * 1116 * \see intel_update_renderbuffers() 1117 * \see intel_region_alloc_for_handle() 1118 */ 1119static void 1120intel_process_dri2_buffer_no_separate_stencil(struct intel_context *intel, 1121 __DRIdrawable *drawable, 1122 __DRIbuffer *buffer, 1123 struct intel_renderbuffer *rb, 1124 const char *buffer_name) 1125{ 1126 assert(!intel->must_use_separate_stencil); 1127 1128 struct gl_framebuffer *fb = drawable->driverPrivate; 1129 struct intel_renderbuffer *depth_rb = NULL; 1130 1131 if (!rb) 1132 return; 1133 1134 if (rb->region && rb->region->name == buffer->name) 1135 return; 1136 1137 if (unlikely(INTEL_DEBUG & DEBUG_DRI)) { 1138 fprintf(stderr, 1139 "attaching buffer %d, at %d, cpp %d, pitch %d\n", 1140 buffer->name, buffer->attachment, 1141 buffer->cpp, buffer->pitch); 1142 } 1143 1144 bool identify_depth_and_stencil = false; 1145 if (buffer->attachment == __DRI_BUFFER_STENCIL) { 1146 struct intel_renderbuffer *depth_rb = 1147 intel_get_renderbuffer(fb, BUFFER_DEPTH); 1148 identify_depth_and_stencil = depth_rb && depth_rb->region; 1149 } 1150 1151 if (identify_depth_and_stencil) { 1152 if (unlikely(INTEL_DEBUG & DEBUG_DRI)) { 1153 fprintf(stderr, "(reusing depth buffer as stencil)\n"); 1154 } 1155 intel_region_reference(&rb->region, depth_rb->region); 1156 } else { 1157 intel_region_release(&rb->region); 1158 rb->region = intel_region_alloc_for_handle(intel->intelScreen, 1159 buffer->cpp, 1160 drawable->w, 1161 drawable->h, 1162 buffer->pitch / buffer->cpp, 1163 buffer->name, 1164 buffer_name); 1165 } 1166 1167 if (buffer->attachment == __DRI_BUFFER_DEPTH_STENCIL) { 1168 struct intel_renderbuffer *stencil_rb = 1169 intel_get_renderbuffer(fb, BUFFER_STENCIL); 1170 1171 if (!stencil_rb) 1172 return; 1173 1174 /* The rb passed in is the BUFFER_DEPTH attachment, and we need 1175 * to associate this region to BUFFER_STENCIL as well. 1176 */ 1177 intel_region_reference(&stencil_rb->region, rb->region); 1178 } 1179} 1180 1181/** 1182 * \brief Query DRI2 to obtain a DRIdrawable's buffers. 1183 * 1184 * To determine which DRI buffers to request, examine the renderbuffers 1185 * attached to the drawable's framebuffer. Then request the buffers with 1186 * DRI2GetBuffersWithFormat(). 1187 * 1188 * This is called from intel_update_renderbuffers(). It is used when 1) the 1189 * hardware supports separate stencil and 2) the X driver's separate stencil 1190 * support has been verified to work or is still unknown. 1191 * 1192 * \param drawable Drawable whose buffers are queried. 1193 * \param buffers [out] List of buffers returned by DRI2 query. 1194 * \param buffer_count [out] Number of buffers returned. 1195 * \param attachments [out] List of pairs (attachment_point, bits_per_pixel) 1196 * that were submitted in the DRI2 query. Number of pairs 1197 * is same as buffer_count. 1198 * 1199 * \see intel_update_renderbuffers() 1200 * \see DRI2GetBuffersWithFormat() 1201 * \see enum intel_dri2_has_hiz 1202 */ 1203static void 1204intel_query_dri2_buffers_with_separate_stencil(struct intel_context *intel, 1205 __DRIdrawable *drawable, 1206 __DRIbuffer **buffers, 1207 unsigned **attachments, 1208 int *count) 1209{ 1210 assert(intel->has_separate_stencil); 1211 1212 __DRIscreen *screen = intel->intelScreen->driScrnPriv; 1213 struct gl_framebuffer *fb = drawable->driverPrivate; 1214 1215 const int max_attachments = 5; 1216 int i = 0; 1217 1218 *attachments = calloc(2 * max_attachments, sizeof(unsigned)); 1219 if (!*attachments) { 1220 *buffers = NULL; 1221 *count = 0; 1222 return; 1223 } 1224 1225 struct intel_renderbuffer *front_rb; 1226 struct intel_renderbuffer *back_rb; 1227 struct intel_renderbuffer *depth_rb; 1228 struct intel_renderbuffer *stencil_rb; 1229 1230 front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT); 1231 back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT); 1232 depth_rb = intel_get_renderbuffer(fb, BUFFER_DEPTH); 1233 stencil_rb = intel_get_renderbuffer(fb, BUFFER_STENCIL); 1234 1235 if ((intel->is_front_buffer_rendering || 1236 intel->is_front_buffer_reading || 1237 !back_rb) && front_rb) { 1238 (*attachments)[i++] = __DRI_BUFFER_FRONT_LEFT; 1239 (*attachments)[i++] = intel_bits_per_pixel(front_rb); 1240 } 1241 1242 if (back_rb) { 1243 (*attachments)[i++] = __DRI_BUFFER_BACK_LEFT; 1244 (*attachments)[i++] = intel_bits_per_pixel(back_rb); 1245 } 1246 1247 /* 1248 * We request a separate stencil buffer, and perhaps a hiz buffer too, even 1249 * if we do not yet know if the X driver supports it. See the comments for 1250 * 'enum intel_dri2_has_hiz'. 1251 */ 1252 1253 if (depth_rb) { 1254 (*attachments)[i++] = __DRI_BUFFER_DEPTH; 1255 (*attachments)[i++] = intel_bits_per_pixel(depth_rb); 1256 1257 if (intel->vtbl.is_hiz_depth_format(intel, depth_rb->Base.Format)) { 1258 /* Depth and hiz buffer have same bpp. */ 1259 (*attachments)[i++] = __DRI_BUFFER_HIZ; 1260 (*attachments)[i++] = intel_bits_per_pixel(depth_rb); 1261 } 1262 } 1263 1264 if (stencil_rb) { 1265 assert(stencil_rb->Base.Format == MESA_FORMAT_S8); 1266 (*attachments)[i++] = __DRI_BUFFER_STENCIL; 1267 (*attachments)[i++] = intel_bits_per_pixel(stencil_rb); 1268 } 1269 1270 assert(i <= 2 * max_attachments); 1271 1272 *buffers = screen->dri2.loader->getBuffersWithFormat(drawable, 1273 &drawable->w, 1274 &drawable->h, 1275 *attachments, i / 2, 1276 count, 1277 drawable->loaderPrivate); 1278 1279 if (!*buffers) { 1280 free(*attachments); 1281 *attachments = NULL; 1282 *count = 0; 1283 } 1284} 1285 1286/** 1287 * \brief Assign a DRI buffer's DRM region to a renderbuffer. 1288 * 1289 * This is called from intel_update_renderbuffers(). It is used when 1) the 1290 * hardware supports separate stencil and 2) the X driver's separate stencil 1291 * support has been verified to work or is still unknown. 1292 * 1293 * \par Note: 1294 * DRI buffers whose attachment point is DRI2BufferStencil or DRI2BufferHiz 1295 * are handled as special cases. 1296 * 1297 * \param buffer_name is a human readable name, such as "dri2 front buffer", 1298 * that is passed to intel_region_alloc_for_handle(). 1299 * 1300 * \see intel_update_renderbuffers() 1301 * \see intel_region_alloc_for_handle() 1302 * \see enum intel_dri2_has_hiz 1303 */ 1304static void 1305intel_process_dri2_buffer_with_separate_stencil(struct intel_context *intel, 1306 __DRIdrawable *drawable, 1307 __DRIbuffer *buffer, 1308 struct intel_renderbuffer *rb, 1309 const char *buffer_name) 1310{ 1311 assert(intel->has_separate_stencil); 1312 assert(buffer->attachment != __DRI_BUFFER_DEPTH_STENCIL); 1313 1314 if (!rb) 1315 return; 1316 1317 /* If the renderbuffer's and DRIbuffer's regions match, then continue. */ 1318 if ((buffer->attachment != __DRI_BUFFER_HIZ && 1319 rb->region && 1320 rb->region->name == buffer->name) || 1321 (buffer->attachment == __DRI_BUFFER_HIZ && 1322 rb->hiz_region && 1323 rb->hiz_region->name == buffer->name)) { 1324 return; 1325 } 1326 1327 if (unlikely(INTEL_DEBUG & DEBUG_DRI)) { 1328 fprintf(stderr, 1329 "attaching buffer %d, at %d, cpp %d, pitch %d\n", 1330 buffer->name, buffer->attachment, 1331 buffer->cpp, buffer->pitch); 1332 } 1333 1334 /* 1335 * The stencil buffer has quirky pitch requirements. From Section 1336 * 2.11.5.6.2.1 3DSTATE_STENCIL_BUFFER, field "Surface Pitch": 1337 * The pitch must be set to 2x the value computed based on width, as 1338 * the stencil buffer is stored with two rows interleaved. 1339 * If we neglect to double the pitch, then drm_intel_gem_bo_map_gtt() 1340 * maps the memory incorrectly. 1341 * 1342 * To satisfy the pitch requirement, the X driver hackishly allocated 1343 * the gem buffer with bpp doubled and height halved. So buffer->cpp is 1344 * correct, but drawable->height is not. 1345 */ 1346 int buffer_height = drawable->h; 1347 if (buffer->attachment == __DRI_BUFFER_STENCIL) { 1348 buffer_height /= 2; 1349 } 1350 1351 struct intel_region *region = 1352 intel_region_alloc_for_handle(intel->intelScreen, 1353 buffer->cpp, 1354 drawable->w, 1355 buffer_height, 1356 buffer->pitch / buffer->cpp, 1357 buffer->name, 1358 buffer_name); 1359 1360 if (buffer->attachment == __DRI_BUFFER_HIZ) { 1361 intel_region_reference(&rb->hiz_region, region); 1362 } else { 1363 intel_region_reference(&rb->region, region); 1364 } 1365 1366 intel_region_release(®ion); 1367} 1368 1369/** 1370 * \brief Verify that the X driver supports hiz and separate stencil. 1371 * 1372 * This implements the cleanup stage of the handshake described in the 1373 * comments for 'enum intel_dri2_has_hiz'. 1374 * 1375 * This should be called from intel_update_renderbuffers() after 1) the 1376 * DRIdrawable has been queried for its buffers via DRI2GetBuffersWithFormat() 1377 * and 2) the DRM region of each returned DRIbuffer has been assigned to the 1378 * appropriate intel_renderbuffer. Furthermore, this should be called *only* 1379 * when 1) intel_update_renderbuffers() tried to used the X driver's separate 1380 * stencil functionality and 2) it has not yet been determined if the X driver 1381 * supports separate stencil. 1382 * 1383 * If we determine that the X driver does have support, then we set 1384 * intel_screen.dri2_has_hiz to true and return. 1385 * 1386 * If we determine that the X driver lacks support, and we requested 1387 * a DRI2BufferDepth and DRI2BufferStencil, then we must remedy the mistake by 1388 * taking the following actions: 1389 * 1. Discard the framebuffer's stencil and depth renderbuffers. 1390 * 2. Create a combined depth/stencil renderbuffer and attach 1391 * it to the framebuffer's depth and stencil attachment points. 1392 * 3. Query the drawable for a new set of buffers, which consists of the 1393 * originally requested set plus DRI2BufferDepthStencil. 1394 * 4. Assign the DRI2BufferDepthStencil's DRM region to the new 1395 * depth/stencil renderbuffer. 1396 * 1397 * \pre intel->intelScreen->dri2_has_hiz == INTEL_DRI2_HAS_HIZ_UNKNOWN 1398 * 1399 * \param drawable Drawable whose buffers were queried. 1400 * 1401 * \param buffers [in/out] As input, the buffer list returned by the 1402 * original DRI2 query. As output, the current buffer 1403 * list, which may have been altered by a new DRI2 query. 1404 * 1405 * \param attachments [in/out] As input, the attachment list submitted 1406 * in the original DRI2 query. As output, the attachment 1407 * list that was submitted in the DRI2 query that 1408 * obtained the current buffer list, as returned in the 1409 * output parameter \c buffers. (Note: If no new query 1410 * was made, then the list remains unaltered). 1411 * 1412 * \param count [out] Number of buffers in the current buffer list, as 1413 * returned in the output parameter \c buffers. 1414 * 1415 * \see enum intel_dri2_has_hiz 1416 * \see struct intel_screen::dri2_has_hiz 1417 * \see intel_update_renderbuffers 1418 */ 1419static void 1420intel_verify_dri2_has_hiz(struct intel_context *intel, 1421 __DRIdrawable *drawable, 1422 __DRIbuffer **buffers, 1423 unsigned **attachments, 1424 int *count) 1425{ 1426 assert(intel->intelScreen->dri2_has_hiz == INTEL_DRI2_HAS_HIZ_UNKNOWN); 1427 1428 struct gl_framebuffer *fb = drawable->driverPrivate; 1429 struct intel_renderbuffer *stencil_rb = 1430 intel_get_renderbuffer(fb, BUFFER_STENCIL); 1431 1432 if (stencil_rb) { 1433 /* 1434 * We requested a DRI2BufferStencil without knowing if the X driver 1435 * supports it. Now, check if X handled the request correctly and clean 1436 * up if it did not. (See comments for 'enum intel_dri2_has_hiz'). 1437 */ 1438 struct intel_renderbuffer *depth_rb = 1439 intel_get_renderbuffer(fb, BUFFER_DEPTH); 1440 assert(stencil_rb->Base.Format == MESA_FORMAT_S8); 1441 assert(depth_rb && depth_rb->Base.Format == MESA_FORMAT_X8_Z24); 1442 1443 if (stencil_rb->region->tiling == I915_TILING_NONE) { 1444 /* 1445 * The stencil buffer is actually W tiled. The region's tiling is 1446 * I915_TILING_NONE, however, because the GTT is incapable of W 1447 * fencing. 1448 */ 1449 intel->intelScreen->dri2_has_hiz = INTEL_DRI2_HAS_HIZ_TRUE; 1450 return; 1451 } else { 1452 /* 1453 * Oops... the screen doesn't support separate stencil. Discard the 1454 * separate depth and stencil buffers and replace them with 1455 * a combined depth/stencil buffer. Discard the hiz buffer too. 1456 */ 1457 intel->intelScreen->dri2_has_hiz = INTEL_DRI2_HAS_HIZ_FALSE; 1458 if (intel->must_use_separate_stencil) { 1459 _mesa_problem(&intel->ctx, 1460 "intel_context requires separate stencil, but the " 1461 "DRIscreen does not support it. You may need to " 1462 "upgrade the Intel X driver to 2.16.0"); 1463 abort(); 1464 } 1465 1466 /* 1. Discard depth and stencil renderbuffers. */ 1467 _mesa_remove_renderbuffer(fb, BUFFER_DEPTH); 1468 depth_rb = NULL; 1469 _mesa_remove_renderbuffer(fb, BUFFER_STENCIL); 1470 stencil_rb = NULL; 1471 1472 /* 2. Create new depth/stencil renderbuffer. */ 1473 struct intel_renderbuffer *depth_stencil_rb = 1474 intel_create_renderbuffer(MESA_FORMAT_S8_Z24); 1475 _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depth_stencil_rb->Base); 1476 _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &depth_stencil_rb->Base); 1477 1478 /* 3. Append DRI2BufferDepthStencil to attachment list. */ 1479 int old_count = *count; 1480 unsigned int *old_attachments = *attachments; 1481 *count = old_count + 1; 1482 *attachments = malloc(2 * (*count) * sizeof(unsigned)); 1483 memcpy(*attachments, old_attachments, 2 * old_count * sizeof(unsigned)); 1484 free(old_attachments); 1485 (*attachments)[2 * old_count + 0] = __DRI_BUFFER_DEPTH_STENCIL; 1486 (*attachments)[2 * old_count + 1] = intel_bits_per_pixel(depth_stencil_rb); 1487 1488 /* 4. Request new set of DRI2 attachments. */ 1489 __DRIscreen *screen = intel->intelScreen->driScrnPriv; 1490 *buffers = screen->dri2.loader->getBuffersWithFormat(drawable, 1491 &drawable->w, 1492 &drawable->h, 1493 *attachments, 1494 *count, 1495 count, 1496 drawable->loaderPrivate); 1497 if (!*buffers) 1498 return; 1499 1500 /* 1501 * I don't know how to recover from the failure assertion below. 1502 * Rather than fail gradually and unexpectedly, we should just die 1503 * now. 1504 */ 1505 assert(*count == old_count + 1); 1506 1507 /* 5. Assign the DRI buffer's DRM region to the its renderbuffers. */ 1508 __DRIbuffer *depth_stencil_buffer = NULL; 1509 for (int i = 0; i < *count; ++i) { 1510 if ((*buffers)[i].attachment == __DRI_BUFFER_DEPTH_STENCIL) { 1511 depth_stencil_buffer = &(*buffers)[i]; 1512 break; 1513 } 1514 } 1515 struct intel_region *region = 1516 intel_region_alloc_for_handle(intel->intelScreen, 1517 depth_stencil_buffer->cpp, 1518 drawable->w, 1519 drawable->h, 1520 depth_stencil_buffer->pitch 1521 / depth_stencil_buffer->cpp, 1522 depth_stencil_buffer->name, 1523 "dri2 depth / stencil buffer"); 1524 intel_region_reference(&intel_get_renderbuffer(fb, BUFFER_DEPTH)->region, 1525 region); 1526 intel_region_reference(&intel_get_renderbuffer(fb, BUFFER_STENCIL)->region, 1527 region); 1528 intel_region_release(®ion); 1529 } 1530 } 1531 1532 if (intel_framebuffer_has_hiz(fb)) { 1533 /* 1534 * In the future, the driver may advertise a GL config with hiz 1535 * compatible depth bits and 0 stencil bits (for example, when the 1536 * driver gains support for float32 depth buffers). When that day comes, 1537 * here we need to verify that the X driver does in fact support hiz and 1538 * clean up if it doesn't. 1539 * 1540 * Presently, however, no verification or clean up is necessary, and 1541 * execution should not reach here. If the framebuffer still has a hiz 1542 * region, then we have already set dri2_has_hiz to true after 1543 * confirming above that the stencil buffer is W tiled. 1544 */ 1545 assert(0); 1546 } 1547} 1548