1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
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"
38 #include "swrast/swrast.h"
39 #include "swrast_setup/swrast_setup.h"
41 #include "drivers/common/driverfuncs.h"
42 #include "drivers/common/meta.h"
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"
57 #include "drirenderbuffer.h"
59 #include "../glsl/ralloc.h"
62 int INTEL_DEBUG = (0);
66 static const GLubyte *
67 intelGetString(struct gl_context * ctx, GLenum name)
69 const struct intel_context *const intel = intel_context(ctx);
71 static char buffer[128];
75 return (GLubyte *) "Tungsten Graphics, Inc";
79 switch (intel->intelScreen->deviceID) {
81 chipset = "Intel(R) 845G";
84 chipset = "Intel(R) 830M";
86 case PCI_CHIP_I855_GM:
87 chipset = "Intel(R) 852GM/855GM";
90 chipset = "Intel(R) 865G";
93 chipset = "Intel(R) 915G";
95 case PCI_CHIP_E7221_G:
96 chipset = "Intel (R) E7221G (i915)";
98 case PCI_CHIP_I915_GM:
99 chipset = "Intel(R) 915GM";
101 case PCI_CHIP_I945_G:
102 chipset = "Intel(R) 945G";
104 case PCI_CHIP_I945_GM:
105 chipset = "Intel(R) 945GM";
107 case PCI_CHIP_I945_GME:
108 chipset = "Intel(R) 945GME";
111 chipset = "Intel(R) G33";
114 chipset = "Intel(R) Q35";
117 chipset = "Intel(R) Q33";
119 case PCI_CHIP_IGD_GM:
121 chipset = "Intel(R) IGD";
123 case PCI_CHIP_I965_Q:
124 chipset = "Intel(R) 965Q";
126 case PCI_CHIP_I965_G:
127 case PCI_CHIP_I965_G_1:
128 chipset = "Intel(R) 965G";
130 case PCI_CHIP_I946_GZ:
131 chipset = "Intel(R) 946GZ";
133 case PCI_CHIP_I965_GM:
134 chipset = "Intel(R) 965GM";
136 case PCI_CHIP_I965_GME:
137 chipset = "Intel(R) 965GME/GLE";
139 case PCI_CHIP_GM45_GM:
140 chipset = "Mobile IntelĀ® GM45 Express Chipset";
142 case PCI_CHIP_IGD_E_G:
143 chipset = "Intel(R) Integrated Graphics Device";
146 chipset = "Intel(R) G45/G43";
149 chipset = "Intel(R) Q45/Q43";
152 chipset = "Intel(R) G41";
155 case PCI_CHIP_B43_G1:
156 chipset = "Intel(R) B43";
159 chipset = "Intel(R) Ironlake Desktop";
162 chipset = "Intel(R) Ironlake Mobile";
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";
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";
174 case PCI_CHIP_SANDYBRIDGE_S:
175 chipset = "Intel(R) Sandybridge Server";
177 case PCI_CHIP_IVYBRIDGE_GT1:
178 case PCI_CHIP_IVYBRIDGE_GT2:
179 chipset = "Intel(R) Ivybridge Desktop";
181 case PCI_CHIP_IVYBRIDGE_M_GT1:
182 case PCI_CHIP_IVYBRIDGE_M_GT2:
183 chipset = "Intel(R) Ivybridge Mobile";
185 case PCI_CHIP_IVYBRIDGE_S_GT1:
186 chipset = "Intel(R) Ivybridge Server";
189 chipset = "Unknown Intel Chipset";
193 (void) driGetRendererString(buffer, chipset, 0);
194 return (GLubyte *) buffer;
202 intel_flush_front(struct gl_context *ctx)
204 struct intel_context *intel = intel_context(ctx);
205 __DRIcontext *driContext = intel->driContext;
206 __DRIscreen *const screen = intel->intelScreen->driScrnPriv;
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);
217 /* We set the dirty bit in intel_prepare_render() if we're
218 * front buffer rendering once we get there.
220 intel->front_buffer_dirty = GL_FALSE;
226 intel_bits_per_pixel(const struct intel_renderbuffer *rb)
228 return _mesa_get_format_bytes(rb->Base.Format) * 8;
232 intel_query_dri2_buffers_no_separate_stencil(struct intel_context *intel,
233 __DRIdrawable *drawable,
234 __DRIbuffer **buffers,
238 intel_process_dri2_buffer_no_separate_stencil(struct intel_context *intel,
239 __DRIdrawable *drawable,
241 struct intel_renderbuffer *rb,
242 const char *buffer_name);
245 intel_query_dri2_buffers_with_separate_stencil(struct intel_context *intel,
246 __DRIdrawable *drawable,
247 __DRIbuffer **buffers,
248 unsigned **attachments,
252 intel_process_dri2_buffer_with_separate_stencil(struct intel_context *intel,
253 __DRIdrawable *drawable,
255 struct intel_renderbuffer *rb,
256 const char *buffer_name);
258 intel_verify_dri2_has_hiz(struct intel_context *intel,
259 __DRIdrawable *drawable,
260 __DRIbuffer **buffers,
261 unsigned **attachments,
265 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
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;
273 const char *region_name;
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;
282 assert(!intel->must_use_separate_stencil || try_separate_stencil);
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
290 if (intel->is_front_buffer_rendering) {
291 intel_flush(&intel->ctx);
292 intel_flush_front(&intel->ctx);
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;
300 if (unlikely(INTEL_DEBUG & DEBUG_DRI))
301 fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
303 if (try_separate_stencil) {
304 intel_query_dri2_buffers_with_separate_stencil(intel, drawable, &buffers,
305 &attachments, &count);
307 intel_query_dri2_buffers_no_separate_stencil(intel, drawable, &buffers,
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;
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";
336 case __DRI_BUFFER_FAKE_FRONT_LEFT:
337 rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
338 region_name = "dri2 fake front buffer";
341 case __DRI_BUFFER_BACK_LEFT:
342 rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
343 region_name = "dri2 back buffer";
346 case __DRI_BUFFER_DEPTH:
347 rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
348 region_name = "dri2 depth buffer";
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";
357 case __DRI_BUFFER_DEPTH_STENCIL:
358 rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
359 region_name = "dri2 depth / stencil buffer";
362 case __DRI_BUFFER_STENCIL:
363 rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
364 region_name = "dri2 stencil buffer";
367 case __DRI_BUFFER_ACCUM:
370 "unhandled buffer attach event, attachment type %d\n",
371 buffers[i].attachment);
375 if (try_separate_stencil) {
376 intel_process_dri2_buffer_with_separate_stencil(intel, drawable,
380 intel_process_dri2_buffer_no_separate_stencil(intel, drawable,
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,
395 driUpdateFramebufferSize(&intel->ctx, drawable);
399 * intel_prepare_render should be called anywhere that curent read/drawbuffer
403 intel_prepare_render(struct intel_context *intel)
405 __DRIcontext *driContext = intel->driContext;
406 __DRIdrawable *drawable;
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;
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;
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.
427 if (intel->is_front_buffer_rendering)
428 intel->front_buffer_dirty = GL_TRUE;
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
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.
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.
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;
454 intel_viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
456 struct intel_context *intel = intel_context(ctx);
457 __DRIcontext *driContext = intel->driContext;
459 if (intel->saved_viewport)
460 intel->saved_viewport(ctx, x, y, w, h);
462 if (ctx->DrawBuffer->Name == 0) {
463 dri2InvalidateDrawable(driContext->driDrawablePriv);
464 dri2InvalidateDrawable(driContext->driReadablePriv);
468 static 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},
482 { "sync", DEBUG_SYNC},
483 { "prim", DEBUG_PRIMS },
484 { "vert", DEBUG_VERTS },
485 { "dri", DEBUG_DRI },
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 },
494 { "urb", DEBUG_URB },
496 { "clip", DEBUG_CLIP },
502 intelInvalidateState(struct gl_context * ctx, GLuint new_state)
504 struct intel_context *intel = intel_context(ctx);
506 _swrast_InvalidateState(ctx, new_state);
507 _vbo_InvalidateState(ctx, new_state);
509 intel->NewGLState |= new_state;
511 if (intel->vtbl.invalidate_state)
512 intel->vtbl.invalidate_state( intel, new_state );
516 intel_flush(struct gl_context *ctx)
518 struct intel_context *intel = intel_context(ctx);
524 INTEL_FIREVERTICES(intel);
526 if (intel->batch.used)
527 intel_batchbuffer_flush(intel);
531 intel_glFlush(struct gl_context *ctx)
533 struct intel_context *intel = intel_context(ctx);
536 intel_flush_front(ctx);
537 if (intel->is_front_buffer_rendering)
538 intel->need_throttle = GL_TRUE;
542 intelFinish(struct gl_context * ctx)
544 struct intel_context *intel = intel_context(ctx);
547 intel_flush_front(ctx);
549 if (intel->batch.last_bo)
550 drm_intel_bo_wait_rendering(intel->batch.last_bo);
554 intelInitDriverFunctions(struct dd_function_table *functions)
556 _mesa_init_driver_functions(functions);
558 functions->Flush = intel_glFlush;
559 functions->Finish = intelFinish;
560 functions->GetString = intelGetString;
561 functions->UpdateState = intelInvalidateState;
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);
576 intelInitContext(struct intel_context *intel,
578 const struct gl_config * mesaVis,
579 __DRIcontext * driContextPriv,
580 void *sharedContextPrivate,
581 struct dd_function_table *functions)
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;
588 struct gl_config visual;
590 /* we can't do anything without a connection to the device */
591 if (intelScreen->bufmgr == NULL)
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;
600 if (mesaVis == NULL) {
601 memset(&visual, 0, sizeof visual);
605 if (!_mesa_initialize_context(&intel->ctx, api, mesaVis, shareCtx,
606 functions, (void *) intel)) {
607 printf("%s: failed to init mesa context\n", __FUNCTION__);
611 driContextPriv->driverPrivate = intel;
612 intel->intelScreen = intelScreen;
613 intel->driContext = driContextPriv;
614 intel->driFd = sPriv->fd;
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;
632 } else if (IS_9XX(intel->intelScreen->deviceID)) {
633 if (IS_945(intel->intelScreen->deviceID)) {
634 intel->is_945 = GL_TRUE;
637 if (intel->intelScreen->deviceID == PCI_CHIP_I830_M ||
638 intel->intelScreen->deviceID == PCI_CHIP_845_G) {
639 intel->has_xrgb_textures = GL_FALSE;
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;
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;
660 ctx->TextureFormatSupported[MESA_FORMAT_AL1616] = GL_TRUE;
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;
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.
674 ctx->TextureFormatSupported[MESA_FORMAT_Z16] = GL_TRUE;
675 ctx->TextureFormatSupported[MESA_FORMAT_Z24] = GL_TRUE;
678 /* ctx->Extensions.MESA_ycbcr_texture */
679 ctx->TextureFormatSupported[MESA_FORMAT_YCBCR] = GL_TRUE;
680 ctx->TextureFormatSupported[MESA_FORMAT_YCBCR_REV] = GL_TRUE;
682 /* GL_3DFX_texture_compression_FXT1 */
683 ctx->TextureFormatSupported[MESA_FORMAT_RGB_FXT1] = GL_TRUE;
684 ctx->TextureFormatSupported[MESA_FORMAT_RGBA_FXT1] = GL_TRUE;
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;
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;
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;
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;
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;
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;
737 driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
738 sPriv->myNum, (intel->gen >= 4) ? "i965" : "i915");
740 intel->maxBatchSize = 4096;
742 intel->maxBatchSize = sizeof(intel->batch.map);
744 intel->bufmgr = intelScreen->bufmgr;
746 bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
747 switch (bo_reuse_mode) {
748 case DRI_CONF_BO_REUSE_DISABLED:
750 case DRI_CONF_BO_REUSE_ALL:
751 intel_bufmgr_gem_enable_reuse(intel->bufmgr);
755 /* This doesn't yet catch all non-conformant rendering, but it's a
758 if (getenv("INTEL_STRICT_CONFORMANCE")) {
759 unsigned int value = atoi(getenv("INTEL_STRICT_CONFORMANCE"));
761 intel->conformance_mode = value;
764 intel->conformance_mode = 1;
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;
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;
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;
789 ctx->Const.MaxSamples = 1.0;
791 /* reinitialize the context point state.
792 * It depend on constants in __struct gl_contextRec::Const
794 _mesa_init_point(ctx);
796 if (intel->gen >= 4) {
797 ctx->Const.sRGBCapable = GL_TRUE;
798 if (MAX_WIDTH > 8192)
799 ctx->Const.MaxRenderbufferSize = 8192;
801 if (MAX_WIDTH > 2048)
802 ctx->Const.MaxRenderbufferSize = 2048;
805 /* Initialize the software rasterizer and helper modules. */
806 _swrast_CreateContext(ctx);
807 _vbo_CreateContext(ctx);
808 _tnl_CreateContext(ctx);
809 _swsetup_CreateContext(ctx);
811 /* Configure swrast to match hardware characteristics: */
812 _swrast_allow_pixel_fog(ctx, GL_FALSE);
813 _swrast_allow_vertex_fog(ctx, GL_TRUE);
815 _mesa_meta_init(ctx);
817 intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
818 intel->hw_stipple = 1;
820 /* XXX FBO: this doesn't seem to be used anywhere */
821 switch (mesaVis->depthBits) {
822 case 0: /* what to do in this case? */
824 intel->polygon_offset_scale = 1.0;
827 intel->polygon_offset_scale = 2.0; /* req'd to pass glean */
835 intel->polygon_offset_scale /= 0xffff;
837 intel->RenderIndex = ~0;
841 intelInitExtensions(ctx);
844 intelInitExtensionsES1(ctx);
847 intelInitExtensionsES2(ctx);
851 INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
852 if (INTEL_DEBUG & DEBUG_BUFMGR)
853 dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
855 intel_batchbuffer_init(intel);
857 intel_fbo_init(intel);
859 if (intel->ctx.Mesa_DXTn) {
860 _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
861 _mesa_enable_extension(ctx, "GL_S3_s3tc");
863 else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
864 _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
866 intel->use_texture_tiling = driQueryOptionb(&intel->optionCache,
868 intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z");
870 intel->prim.primitive = ~0;
872 /* Force all software fallbacks */
873 if (driQueryOptionb(&intel->optionCache, "no_rast")) {
874 fprintf(stderr, "disabling 3D rasterization\n");
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;
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;
892 intelDestroyContext(__DRIcontext * driContextPriv)
894 struct intel_context *intel =
895 (struct intel_context *) driContextPriv->driverPrivate;
897 assert(intel); /* should never be null */
899 INTEL_FIREVERTICES(intel);
901 _mesa_meta_free(&intel->ctx);
903 intel->vtbl.destroy(intel);
905 _swsetup_DestroyContext(&intel->ctx);
906 _tnl_DestroyContext(&intel->ctx);
907 _vbo_DestroyContext(&intel->ctx);
909 _swrast_DestroyContext(&intel->ctx);
910 intel->Fallback = 0x0; /* don't call _swrast_Flush later */
912 intel_batchbuffer_free(intel);
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;
921 driDestroyOptionCache(&intel->optionCache);
923 /* free the Mesa context */
924 _mesa_free_context_data(&intel->ctx);
926 _math_matrix_dtr(&intel->ViewportMatrix);
929 driContextPriv->driverPrivate = NULL;
934 intelUnbindContext(__DRIcontext * driContextPriv)
936 /* Unset current context and dispath table */
937 _mesa_make_current(NULL, NULL, NULL);
943 intelMakeCurrent(__DRIcontext * driContextPriv,
944 __DRIdrawable * driDrawPriv,
945 __DRIdrawable * driReadPriv)
947 struct intel_context *intel;
948 GET_CURRENT_CONTEXT(curCtx);
951 intel = (struct intel_context *) driContextPriv->driverPrivate;
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.
959 if (intel_context(curCtx) && intel_context(curCtx) != intel) {
963 if (driContextPriv) {
964 struct gl_framebuffer *fb, *readFb;
966 if (driDrawPriv == NULL && driReadPriv == NULL) {
967 fb = _mesa_get_incomplete_framebuffer();
968 readFb = _mesa_get_incomplete_framebuffer();
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;
976 intel_prepare_render(intel);
977 _mesa_make_current(&intel->ctx, fb, readFb);
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);
986 _mesa_make_current(NULL, NULL, NULL);
993 * \brief Query DRI2 to obtain a DRIdrawable's buffers.
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().
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.
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.
1006 * \see intel_update_renderbuffers()
1007 * \see DRI2GetBuffers()
1008 * \see DRI2GetBuffersWithFormat()
1011 intel_query_dri2_buffers_no_separate_stencil(struct intel_context *intel,
1012 __DRIdrawable *drawable,
1013 __DRIbuffer **buffers,
1016 assert(!intel->must_use_separate_stencil);
1018 __DRIscreen *screen = intel->intelScreen->driScrnPriv;
1019 struct gl_framebuffer *fb = drawable->driverPrivate;
1021 if (screen->dri2.loader
1022 && screen->dri2.loader->base.version > 2
1023 && screen->dri2.loader->getBuffersWithFormat != NULL) {
1026 const int max_attachments = 4;
1027 unsigned *attachments = calloc(2 * max_attachments, sizeof(unsigned));
1029 struct intel_renderbuffer *front_rb;
1030 struct intel_renderbuffer *back_rb;
1031 struct intel_renderbuffer *depth_rb;
1032 struct intel_renderbuffer *stencil_rb;
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);
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);
1047 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
1048 attachments[i++] = intel_bits_per_pixel(back_rb);
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);
1062 assert(i <= 2 * max_attachments);
1064 *buffers = screen->dri2.loader->getBuffersWithFormat(drawable,
1069 drawable->loaderPrivate);
1072 } else if (screen->dri2.loader) {
1075 const int max_attachments = 4;
1076 unsigned *attachments = calloc(max_attachments, sizeof(unsigned));
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;
1087 assert(i <= max_attachments);
1089 *buffers = screen->dri2.loader->getBuffersWithFormat(drawable,
1094 drawable->loaderPrivate);
1104 * \brief Assign a DRI buffer's DRM region to a renderbuffer.
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.
1110 * DRI buffers whose attachment point is DRI2BufferStencil or
1111 * DRI2BufferDepthStencil are handled as special cases.
1113 * \param buffer_name is a human readable name, such as "dri2 front buffer",
1114 * that is passed to intel_region_alloc_for_handle().
1116 * \see intel_update_renderbuffers()
1117 * \see intel_region_alloc_for_handle()
1120 intel_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)
1126 assert(!intel->must_use_separate_stencil);
1128 struct gl_framebuffer *fb = drawable->driverPrivate;
1129 struct intel_renderbuffer *depth_rb = NULL;
1134 if (rb->region && rb->region->name == buffer->name)
1137 if (unlikely(INTEL_DEBUG & DEBUG_DRI)) {
1139 "attaching buffer %d, at %d, cpp %d, pitch %d\n",
1140 buffer->name, buffer->attachment,
1141 buffer->cpp, buffer->pitch);
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;
1151 if (identify_depth_and_stencil) {
1152 if (unlikely(INTEL_DEBUG & DEBUG_DRI)) {
1153 fprintf(stderr, "(reusing depth buffer as stencil)\n");
1155 intel_region_reference(&rb->region, depth_rb->region);
1157 intel_region_release(&rb->region);
1158 rb->region = intel_region_alloc_for_handle(intel->intelScreen,
1162 buffer->pitch / buffer->cpp,
1167 if (buffer->attachment == __DRI_BUFFER_DEPTH_STENCIL) {
1168 struct intel_renderbuffer *stencil_rb =
1169 intel_get_renderbuffer(fb, BUFFER_STENCIL);
1174 /* The rb passed in is the BUFFER_DEPTH attachment, and we need
1175 * to associate this region to BUFFER_STENCIL as well.
1177 intel_region_reference(&stencil_rb->region, rb->region);
1182 * \brief Query DRI2 to obtain a DRIdrawable's buffers.
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().
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.
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.
1199 * \see intel_update_renderbuffers()
1200 * \see DRI2GetBuffersWithFormat()
1201 * \see enum intel_dri2_has_hiz
1204 intel_query_dri2_buffers_with_separate_stencil(struct intel_context *intel,
1205 __DRIdrawable *drawable,
1206 __DRIbuffer **buffers,
1207 unsigned **attachments,
1210 assert(intel->has_separate_stencil);
1212 __DRIscreen *screen = intel->intelScreen->driScrnPriv;
1213 struct gl_framebuffer *fb = drawable->driverPrivate;
1215 const int max_attachments = 5;
1218 *attachments = calloc(2 * max_attachments, sizeof(unsigned));
1219 if (!*attachments) {
1225 struct intel_renderbuffer *front_rb;
1226 struct intel_renderbuffer *back_rb;
1227 struct intel_renderbuffer *depth_rb;
1228 struct intel_renderbuffer *stencil_rb;
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);
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);
1243 (*attachments)[i++] = __DRI_BUFFER_BACK_LEFT;
1244 (*attachments)[i++] = intel_bits_per_pixel(back_rb);
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'.
1254 (*attachments)[i++] = __DRI_BUFFER_DEPTH;
1255 (*attachments)[i++] = intel_bits_per_pixel(depth_rb);
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);
1265 assert(stencil_rb->Base.Format == MESA_FORMAT_S8);
1266 (*attachments)[i++] = __DRI_BUFFER_STENCIL;
1267 (*attachments)[i++] = intel_bits_per_pixel(stencil_rb);
1270 assert(i <= 2 * max_attachments);
1272 *buffers = screen->dri2.loader->getBuffersWithFormat(drawable,
1275 *attachments, i / 2,
1277 drawable->loaderPrivate);
1281 *attachments = NULL;
1287 * \brief Assign a DRI buffer's DRM region to a renderbuffer.
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.
1294 * DRI buffers whose attachment point is DRI2BufferStencil or DRI2BufferHiz
1295 * are handled as special cases.
1297 * \param buffer_name is a human readable name, such as "dri2 front buffer",
1298 * that is passed to intel_region_alloc_for_handle().
1300 * \see intel_update_renderbuffers()
1301 * \see intel_region_alloc_for_handle()
1302 * \see enum intel_dri2_has_hiz
1305 intel_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)
1311 assert(intel->has_separate_stencil);
1312 assert(buffer->attachment != __DRI_BUFFER_DEPTH_STENCIL);
1317 /* If the renderbuffer's and DRIbuffer's regions match, then continue. */
1318 if ((buffer->attachment != __DRI_BUFFER_HIZ &&
1320 rb->region->name == buffer->name) ||
1321 (buffer->attachment == __DRI_BUFFER_HIZ &&
1323 rb->hiz_region->name == buffer->name)) {
1327 if (unlikely(INTEL_DEBUG & DEBUG_DRI)) {
1329 "attaching buffer %d, at %d, cpp %d, pitch %d\n",
1330 buffer->name, buffer->attachment,
1331 buffer->cpp, buffer->pitch);
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.
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.
1346 int buffer_height = drawable->h;
1347 if (buffer->attachment == __DRI_BUFFER_STENCIL) {
1351 struct intel_region *region =
1352 intel_region_alloc_for_handle(intel->intelScreen,
1356 buffer->pitch / buffer->cpp,
1360 if (buffer->attachment == __DRI_BUFFER_HIZ) {
1361 intel_region_reference(&rb->hiz_region, region);
1363 intel_region_reference(&rb->region, region);
1366 intel_region_release(®ion);
1370 * \brief Verify that the X driver supports hiz and separate stencil.
1372 * This implements the cleanup stage of the handshake described in the
1373 * comments for 'enum intel_dri2_has_hiz'.
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.
1383 * If we determine that the X driver does have support, then we set
1384 * intel_screen.dri2_has_hiz to true and return.
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.
1397 * \pre intel->intelScreen->dri2_has_hiz == INTEL_DRI2_HAS_HIZ_UNKNOWN
1399 * \param drawable Drawable whose buffers were queried.
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.
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).
1412 * \param count [out] Number of buffers in the current buffer list, as
1413 * returned in the output parameter \c buffers.
1415 * \see enum intel_dri2_has_hiz
1416 * \see struct intel_screen::dri2_has_hiz
1417 * \see intel_update_renderbuffers
1420 intel_verify_dri2_has_hiz(struct intel_context *intel,
1421 __DRIdrawable *drawable,
1422 __DRIbuffer **buffers,
1423 unsigned **attachments,
1426 assert(intel->intelScreen->dri2_has_hiz == INTEL_DRI2_HAS_HIZ_UNKNOWN);
1428 struct gl_framebuffer *fb = drawable->driverPrivate;
1429 struct intel_renderbuffer *stencil_rb =
1430 intel_get_renderbuffer(fb, BUFFER_STENCIL);
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').
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);
1443 if (stencil_rb->region->tiling == I915_TILING_NONE) {
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
1449 intel->intelScreen->dri2_has_hiz = INTEL_DRI2_HAS_HIZ_TRUE;
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.
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");
1466 /* 1. Discard depth and stencil renderbuffers. */
1467 _mesa_remove_renderbuffer(fb, BUFFER_DEPTH);
1469 _mesa_remove_renderbuffer(fb, BUFFER_STENCIL);
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);
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);
1488 /* 4. Request new set of DRI2 attachments. */
1489 __DRIscreen *screen = intel->intelScreen->driScrnPriv;
1490 *buffers = screen->dri2.loader->getBuffersWithFormat(drawable,
1496 drawable->loaderPrivate);
1501 * I don't know how to recover from the failure assertion below.
1502 * Rather than fail gradually and unexpectedly, we should just die
1505 assert(*count == old_count + 1);
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];
1515 struct intel_region *region =
1516 intel_region_alloc_for_handle(intel->intelScreen,
1517 depth_stencil_buffer->cpp,
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,
1526 intel_region_reference(&intel_get_renderbuffer(fb, BUFFER_STENCIL)->region,
1528 intel_region_release(®ion);
1532 if (intel_framebuffer_has_hiz(fb)) {
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.
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.