/************************************************************************** * * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * **************************************************************************/ #include "main/glheader.h" #include "main/context.h" #include "main/extensions.h" #include "main/fbobject.h" #include "main/framebuffer.h" #include "main/imports.h" #include "main/points.h" #include "main/renderbuffer.h" #include "swrast/swrast.h" #include "swrast_setup/swrast_setup.h" #include "tnl/tnl.h" #include "drivers/common/driverfuncs.h" #include "drivers/common/meta.h" #include "intel_chipset.h" #include "intel_buffers.h" #include "intel_tex.h" #include "intel_batchbuffer.h" #include "intel_clear.h" #include "intel_extensions.h" #include "intel_pixel.h" #include "intel_regions.h" #include "intel_buffer_objects.h" #include "intel_fbo.h" #include "intel_bufmgr.h" #include "intel_screen.h" #include "drirenderbuffer.h" #include "utils.h" #include "../glsl/ralloc.h" #ifndef INTEL_DEBUG int INTEL_DEBUG = (0); #endif static const GLubyte * intelGetString(struct gl_context * ctx, GLenum name) { const struct intel_context *const intel = intel_context(ctx); const char *chipset; static char buffer[128]; switch (name) { case GL_VENDOR: return (GLubyte *) "Tungsten Graphics, Inc"; break; case GL_RENDERER: switch (intel->intelScreen->deviceID) { case PCI_CHIP_845_G: chipset = "Intel(R) 845G"; break; case PCI_CHIP_I830_M: chipset = "Intel(R) 830M"; break; case PCI_CHIP_I855_GM: chipset = "Intel(R) 852GM/855GM"; break; case PCI_CHIP_I865_G: chipset = "Intel(R) 865G"; break; case PCI_CHIP_I915_G: chipset = "Intel(R) 915G"; break; case PCI_CHIP_E7221_G: chipset = "Intel (R) E7221G (i915)"; break; case PCI_CHIP_I915_GM: chipset = "Intel(R) 915GM"; break; case PCI_CHIP_I945_G: chipset = "Intel(R) 945G"; break; case PCI_CHIP_I945_GM: chipset = "Intel(R) 945GM"; break; case PCI_CHIP_I945_GME: chipset = "Intel(R) 945GME"; break; case PCI_CHIP_G33_G: chipset = "Intel(R) G33"; break; case PCI_CHIP_Q35_G: chipset = "Intel(R) Q35"; break; case PCI_CHIP_Q33_G: chipset = "Intel(R) Q33"; break; case PCI_CHIP_IGD_GM: case PCI_CHIP_IGD_G: chipset = "Intel(R) IGD"; break; case PCI_CHIP_I965_Q: chipset = "Intel(R) 965Q"; break; case PCI_CHIP_I965_G: case PCI_CHIP_I965_G_1: chipset = "Intel(R) 965G"; break; case PCI_CHIP_I946_GZ: chipset = "Intel(R) 946GZ"; break; case PCI_CHIP_I965_GM: chipset = "Intel(R) 965GM"; break; case PCI_CHIP_I965_GME: chipset = "Intel(R) 965GME/GLE"; break; case PCI_CHIP_GM45_GM: chipset = "Mobile Intel® GM45 Express Chipset"; break; case PCI_CHIP_IGD_E_G: chipset = "Intel(R) Integrated Graphics Device"; break; case PCI_CHIP_G45_G: chipset = "Intel(R) G45/G43"; break; case PCI_CHIP_Q45_G: chipset = "Intel(R) Q45/Q43"; break; case PCI_CHIP_G41_G: chipset = "Intel(R) G41"; break; case PCI_CHIP_B43_G: case PCI_CHIP_B43_G1: chipset = "Intel(R) B43"; break; case PCI_CHIP_ILD_G: chipset = "Intel(R) Ironlake Desktop"; break; case PCI_CHIP_ILM_G: chipset = "Intel(R) Ironlake Mobile"; break; case PCI_CHIP_SANDYBRIDGE_GT1: case PCI_CHIP_SANDYBRIDGE_GT2: case PCI_CHIP_SANDYBRIDGE_GT2_PLUS: chipset = "Intel(R) Sandybridge Desktop"; break; case PCI_CHIP_SANDYBRIDGE_M_GT1: case PCI_CHIP_SANDYBRIDGE_M_GT2: case PCI_CHIP_SANDYBRIDGE_M_GT2_PLUS: chipset = "Intel(R) Sandybridge Mobile"; break; case PCI_CHIP_SANDYBRIDGE_S: chipset = "Intel(R) Sandybridge Server"; break; case PCI_CHIP_IVYBRIDGE_GT1: case PCI_CHIP_IVYBRIDGE_GT2: chipset = "Intel(R) Ivybridge Desktop"; break; case PCI_CHIP_IVYBRIDGE_M_GT1: case PCI_CHIP_IVYBRIDGE_M_GT2: chipset = "Intel(R) Ivybridge Mobile"; break; case PCI_CHIP_IVYBRIDGE_S_GT1: chipset = "Intel(R) Ivybridge Server"; break; default: chipset = "Unknown Intel Chipset"; break; } (void) driGetRendererString(buffer, chipset, 0); return (GLubyte *) buffer; default: return NULL; } } static void intel_flush_front(struct gl_context *ctx) { struct intel_context *intel = intel_context(ctx); __DRIcontext *driContext = intel->driContext; __DRIscreen *const screen = intel->intelScreen->driScrnPriv; if ((ctx->DrawBuffer->Name == 0) && intel->front_buffer_dirty) { if (screen->dri2.loader && (screen->dri2.loader->base.version >= 2) && (screen->dri2.loader->flushFrontBuffer != NULL) && driContext->driDrawablePriv && driContext->driDrawablePriv->loaderPrivate) { (*screen->dri2.loader->flushFrontBuffer)(driContext->driDrawablePriv, driContext->driDrawablePriv->loaderPrivate); /* We set the dirty bit in intel_prepare_render() if we're * front buffer rendering once we get there. */ intel->front_buffer_dirty = GL_FALSE; } } } static unsigned intel_bits_per_pixel(const struct intel_renderbuffer *rb) { return _mesa_get_format_bytes(rb->Base.Format) * 8; } static void intel_query_dri2_buffers_no_separate_stencil(struct intel_context *intel, __DRIdrawable *drawable, __DRIbuffer **buffers, int *count); static void intel_process_dri2_buffer_no_separate_stencil(struct intel_context *intel, __DRIdrawable *drawable, __DRIbuffer *buffer, struct intel_renderbuffer *rb, const char *buffer_name); static void intel_query_dri2_buffers_with_separate_stencil(struct intel_context *intel, __DRIdrawable *drawable, __DRIbuffer **buffers, unsigned **attachments, int *count); static void intel_process_dri2_buffer_with_separate_stencil(struct intel_context *intel, __DRIdrawable *drawable, __DRIbuffer *buffer, struct intel_renderbuffer *rb, const char *buffer_name); static void intel_verify_dri2_has_hiz(struct intel_context *intel, __DRIdrawable *drawable, __DRIbuffer **buffers, unsigned **attachments, int *count); void intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable) { struct gl_framebuffer *fb = drawable->driverPrivate; struct intel_renderbuffer *rb; struct intel_context *intel = context->driverPrivate; __DRIbuffer *buffers = NULL; unsigned *attachments = NULL; int i, count; const char *region_name; bool try_separate_stencil = intel->has_separate_stencil && intel->intelScreen->dri2_has_hiz != INTEL_DRI2_HAS_HIZ_FALSE && intel->intelScreen->driScrnPriv->dri2.loader != NULL && intel->intelScreen->driScrnPriv->dri2.loader->base.version > 2 && intel->intelScreen->driScrnPriv->dri2.loader->getBuffersWithFormat != NULL; assert(!intel->must_use_separate_stencil || try_separate_stencil); /* If we're rendering to the fake front buffer, make sure all the * pending drawing has landed on the real front buffer. Otherwise * when we eventually get to DRI2GetBuffersWithFormat the stale * real front buffer contents will get copied to the new fake front * buffer. */ if (intel->is_front_buffer_rendering) { intel_flush(&intel->ctx); intel_flush_front(&intel->ctx); } /* Set this up front, so that in case our buffers get invalidated * while we're getting new buffers, we don't clobber the stamp and * thus ignore the invalidate. */ drawable->lastStamp = drawable->dri2.stamp; if (unlikely(INTEL_DEBUG & DEBUG_DRI)) fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable); if (try_separate_stencil) { intel_query_dri2_buffers_with_separate_stencil(intel, drawable, &buffers, &attachments, &count); } else { intel_query_dri2_buffers_no_separate_stencil(intel, drawable, &buffers, &count); } if (buffers == NULL) return; drawable->x = 0; drawable->y = 0; drawable->backX = 0; drawable->backY = 0; drawable->numClipRects = 1; drawable->pClipRects[0].x1 = 0; drawable->pClipRects[0].y1 = 0; drawable->pClipRects[0].x2 = drawable->w; drawable->pClipRects[0].y2 = drawable->h; drawable->numBackClipRects = 1; drawable->pBackClipRects[0].x1 = 0; drawable->pBackClipRects[0].y1 = 0; drawable->pBackClipRects[0].x2 = drawable->w; drawable->pBackClipRects[0].y2 = drawable->h; for (i = 0; i < count; i++) { switch (buffers[i].attachment) { case __DRI_BUFFER_FRONT_LEFT: rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT); region_name = "dri2 front buffer"; break; case __DRI_BUFFER_FAKE_FRONT_LEFT: rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT); region_name = "dri2 fake front buffer"; break; case __DRI_BUFFER_BACK_LEFT: rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT); region_name = "dri2 back buffer"; break; case __DRI_BUFFER_DEPTH: rb = intel_get_renderbuffer(fb, BUFFER_DEPTH); region_name = "dri2 depth buffer"; break; case __DRI_BUFFER_HIZ: /* The hiz region resides in the depth renderbuffer. */ rb = intel_get_renderbuffer(fb, BUFFER_DEPTH); region_name = "dri2 hiz buffer"; break; case __DRI_BUFFER_DEPTH_STENCIL: rb = intel_get_renderbuffer(fb, BUFFER_DEPTH); region_name = "dri2 depth / stencil buffer"; break; case __DRI_BUFFER_STENCIL: rb = intel_get_renderbuffer(fb, BUFFER_STENCIL); region_name = "dri2 stencil buffer"; break; case __DRI_BUFFER_ACCUM: default: fprintf(stderr, "unhandled buffer attach event, attachment type %d\n", buffers[i].attachment); return; } if (try_separate_stencil) { intel_process_dri2_buffer_with_separate_stencil(intel, drawable, &buffers[i], rb, region_name); } else { intel_process_dri2_buffer_no_separate_stencil(intel, drawable, &buffers[i], rb, region_name); } } if (try_separate_stencil && intel->intelScreen->dri2_has_hiz == INTEL_DRI2_HAS_HIZ_UNKNOWN) { intel_verify_dri2_has_hiz(intel, drawable, &buffers, &attachments, &count); } if (attachments) free(attachments); driUpdateFramebufferSize(&intel->ctx, drawable); } /** * intel_prepare_render should be called anywhere that curent read/drawbuffer * state is required. */ void intel_prepare_render(struct intel_context *intel) { __DRIcontext *driContext = intel->driContext; __DRIdrawable *drawable; drawable = driContext->driDrawablePriv; if (drawable && drawable->dri2.stamp != driContext->dri2.draw_stamp) { if (drawable->lastStamp != drawable->dri2.stamp) intel_update_renderbuffers(driContext, drawable); intel_draw_buffer(&intel->ctx, intel->ctx.DrawBuffer); driContext->dri2.draw_stamp = drawable->dri2.stamp; } drawable = driContext->driReadablePriv; if (drawable && drawable->dri2.stamp != driContext->dri2.read_stamp) { if (drawable->lastStamp != drawable->dri2.stamp) intel_update_renderbuffers(driContext, drawable); driContext->dri2.read_stamp = drawable->dri2.stamp; } /* If we're currently rendering to the front buffer, the rendering * that will happen next will probably dirty the front buffer. So * mark it as dirty here. */ if (intel->is_front_buffer_rendering) intel->front_buffer_dirty = GL_TRUE; /* Wait for the swapbuffers before the one we just emitted, so we * don't get too many swaps outstanding for apps that are GPU-heavy * but not CPU-heavy. * * We're using intelDRI2Flush (called from the loader before * swapbuffer) and glFlush (for front buffer rendering) as the * indicator that a frame is done and then throttle when we get * here as we prepare to render the next frame. At this point for * round trips for swap/copy and getting new buffers are done and * we'll spend less time waiting on the GPU. * * Unfortunately, we don't have a handle to the batch containing * the swap, and getting our hands on that doesn't seem worth it, * so we just us the first batch we emitted after the last swap. */ if (intel->need_throttle && intel->first_post_swapbuffers_batch) { drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch); drm_intel_bo_unreference(intel->first_post_swapbuffers_batch); intel->first_post_swapbuffers_batch = NULL; intel->need_throttle = GL_FALSE; } } static void intel_viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h) { struct intel_context *intel = intel_context(ctx); __DRIcontext *driContext = intel->driContext; if (intel->saved_viewport) intel->saved_viewport(ctx, x, y, w, h); if (ctx->DrawBuffer->Name == 0) { dri2InvalidateDrawable(driContext->driDrawablePriv); dri2InvalidateDrawable(driContext->driReadablePriv); } } static const struct dri_debug_control debug_control[] = { { "tex", DEBUG_TEXTURE}, { "state", DEBUG_STATE}, { "ioctl", DEBUG_IOCTL}, { "blit", DEBUG_BLIT}, { "mip", DEBUG_MIPTREE}, { "fall", DEBUG_FALLBACKS}, { "verb", DEBUG_VERBOSE}, { "bat", DEBUG_BATCH}, { "pix", DEBUG_PIXEL}, { "buf", DEBUG_BUFMGR}, { "reg", DEBUG_REGION}, { "fbo", DEBUG_FBO}, { "gs", DEBUG_GS}, { "sync", DEBUG_SYNC}, { "prim", DEBUG_PRIMS }, { "vert", DEBUG_VERTS }, { "dri", DEBUG_DRI }, { "sf", DEBUG_SF }, { "san", DEBUG_SANITY }, { "sleep", DEBUG_SLEEP }, { "stats", DEBUG_STATS }, { "tile", DEBUG_TILE }, { "sing", DEBUG_SINGLE_THREAD }, { "thre", DEBUG_SINGLE_THREAD }, { "wm", DEBUG_WM }, { "urb", DEBUG_URB }, { "vs", DEBUG_VS }, { "clip", DEBUG_CLIP }, { NULL, 0 } }; static void intelInvalidateState(struct gl_context * ctx, GLuint new_state) { struct intel_context *intel = intel_context(ctx); _swrast_InvalidateState(ctx, new_state); _vbo_InvalidateState(ctx, new_state); intel->NewGLState |= new_state; if (intel->vtbl.invalidate_state) intel->vtbl.invalidate_state( intel, new_state ); } void intel_flush(struct gl_context *ctx) { struct intel_context *intel = intel_context(ctx); if (intel->Fallback) _swrast_flush(ctx); if (intel->gen < 4) INTEL_FIREVERTICES(intel); if (intel->batch.used) intel_batchbuffer_flush(intel); } static void intel_glFlush(struct gl_context *ctx) { struct intel_context *intel = intel_context(ctx); intel_flush(ctx); intel_flush_front(ctx); if (intel->is_front_buffer_rendering) intel->need_throttle = GL_TRUE; } void intelFinish(struct gl_context * ctx) { struct intel_context *intel = intel_context(ctx); intel_flush(ctx); intel_flush_front(ctx); if (intel->batch.last_bo) drm_intel_bo_wait_rendering(intel->batch.last_bo); } void intelInitDriverFunctions(struct dd_function_table *functions) { _mesa_init_driver_functions(functions); functions->Flush = intel_glFlush; functions->Finish = intelFinish; functions->GetString = intelGetString; functions->UpdateState = intelInvalidateState; intelInitTextureFuncs(functions); intelInitTextureImageFuncs(functions); intelInitTextureSubImageFuncs(functions); intelInitTextureCopyImageFuncs(functions); intelInitStateFuncs(functions); intelInitClearFuncs(functions); intelInitBufferFuncs(functions); intelInitPixelFuncs(functions); intelInitBufferObjectFuncs(functions); intel_init_syncobj_functions(functions); } GLboolean intelInitContext(struct intel_context *intel, int api, const struct gl_config * mesaVis, __DRIcontext * driContextPriv, void *sharedContextPrivate, struct dd_function_table *functions) { struct gl_context *ctx = &intel->ctx; struct gl_context *shareCtx = (struct gl_context *) sharedContextPrivate; __DRIscreen *sPriv = driContextPriv->driScreenPriv; struct intel_screen *intelScreen = sPriv->private; int bo_reuse_mode; struct gl_config visual; /* we can't do anything without a connection to the device */ if (intelScreen->bufmgr == NULL) return GL_FALSE; /* Can't rely on invalidate events, fall back to glViewport hack */ if (!driContextPriv->driScreenPriv->dri2.useInvalidate) { intel->saved_viewport = functions->Viewport; functions->Viewport = intel_viewport; } if (mesaVis == NULL) { memset(&visual, 0, sizeof visual); mesaVis = &visual; } if (!_mesa_initialize_context(&intel->ctx, api, mesaVis, shareCtx, functions, (void *) intel)) { printf("%s: failed to init mesa context\n", __FUNCTION__); return GL_FALSE; } driContextPriv->driverPrivate = intel; intel->intelScreen = intelScreen; intel->driContext = driContextPriv; intel->driFd = sPriv->fd; intel->has_xrgb_textures = GL_TRUE; intel->gen = intelScreen->gen; if (IS_GEN7(intel->intelScreen->deviceID)) { intel->needs_ff_sync = GL_TRUE; intel->has_luminance_srgb = GL_TRUE; } else if (IS_GEN6(intel->intelScreen->deviceID)) { intel->needs_ff_sync = GL_TRUE; intel->has_luminance_srgb = GL_TRUE; } else if (IS_GEN5(intel->intelScreen->deviceID)) { intel->needs_ff_sync = GL_TRUE; intel->has_luminance_srgb = GL_TRUE; } else if (IS_965(intel->intelScreen->deviceID)) { if (IS_G4X(intel->intelScreen->deviceID)) { intel->has_luminance_srgb = GL_TRUE; intel->is_g4x = GL_TRUE; } } else if (IS_9XX(intel->intelScreen->deviceID)) { if (IS_945(intel->intelScreen->deviceID)) { intel->is_945 = GL_TRUE; } } else { if (intel->intelScreen->deviceID == PCI_CHIP_I830_M || intel->intelScreen->deviceID == PCI_CHIP_845_G) { intel->has_xrgb_textures = GL_FALSE; } } intel->has_separate_stencil = intel->intelScreen->hw_has_separate_stencil; intel->must_use_separate_stencil = intel->intelScreen->hw_must_use_separate_stencil; intel->has_hiz = intel->intelScreen->hw_has_hiz; memset(&ctx->TextureFormatSupported, 0, sizeof(ctx->TextureFormatSupported)); ctx->TextureFormatSupported[MESA_FORMAT_ARGB8888] = GL_TRUE; if (intel->has_xrgb_textures) ctx->TextureFormatSupported[MESA_FORMAT_XRGB8888] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_ARGB4444] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_ARGB1555] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_RGB565] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_L8] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_A8] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_I8] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_AL88] = GL_TRUE; if (intel->gen >= 4) ctx->TextureFormatSupported[MESA_FORMAT_AL1616] = GL_TRUE; /* Depth and stencil */ ctx->TextureFormatSupported[MESA_FORMAT_S8_Z24] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_X8_Z24] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_S8] = intel->has_separate_stencil; /* * This was disabled in initial FBO enabling to avoid combinations * of depth+stencil that wouldn't work together. We since decided * that it was OK, since it's up to the app to come up with the * combo that actually works, so this can probably be re-enabled. */ /* ctx->TextureFormatSupported[MESA_FORMAT_Z16] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_Z24] = GL_TRUE; */ /* ctx->Extensions.MESA_ycbcr_texture */ ctx->TextureFormatSupported[MESA_FORMAT_YCBCR] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_YCBCR_REV] = GL_TRUE; /* GL_3DFX_texture_compression_FXT1 */ ctx->TextureFormatSupported[MESA_FORMAT_RGB_FXT1] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_RGBA_FXT1] = GL_TRUE; /* GL_EXT_texture_compression_s3tc */ ctx->TextureFormatSupported[MESA_FORMAT_RGB_DXT1] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT1] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT3] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT5] = GL_TRUE; #ifndef I915 /* GL_ARB_texture_compression_rgtc */ ctx->TextureFormatSupported[MESA_FORMAT_RED_RGTC1] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_RED_RGTC1] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_RG_RGTC2] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_RG_RGTC2] = GL_TRUE; /* GL_ARB_texture_rg */ ctx->TextureFormatSupported[MESA_FORMAT_R8] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_R16] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_RG88] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_RG1616] = GL_TRUE; /* GL_MESA_texture_signed_rgba / GL_EXT_texture_snorm */ ctx->TextureFormatSupported[MESA_FORMAT_DUDV8] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_RGBA8888_REV] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_R8] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_RG88_REV] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_R16] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_GR1616] = GL_TRUE; /* GL_EXT_texture_sRGB */ ctx->TextureFormatSupported[MESA_FORMAT_SARGB8] = GL_TRUE; if (intel->gen >= 5 || intel->is_g4x) ctx->TextureFormatSupported[MESA_FORMAT_SRGB_DXT1] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_SRGBA_DXT1] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_SRGBA_DXT3] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_SRGBA_DXT5] = GL_TRUE; if (intel->has_luminance_srgb) { ctx->TextureFormatSupported[MESA_FORMAT_SL8] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_SLA8] = GL_TRUE; } #ifdef TEXTURE_FLOAT_ENABLED ctx->TextureFormatSupported[MESA_FORMAT_RGBA_FLOAT32] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_RG_FLOAT32] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_R_FLOAT32] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_INTENSITY_FLOAT32] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_LUMINANCE_FLOAT32] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_ALPHA_FLOAT32] = GL_TRUE; ctx->TextureFormatSupported[MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32] = GL_TRUE; #endif #endif /* !I915 */ driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache, sPriv->myNum, (intel->gen >= 4) ? "i965" : "i915"); if (intel->gen < 4) intel->maxBatchSize = 4096; else intel->maxBatchSize = sizeof(intel->batch.map); intel->bufmgr = intelScreen->bufmgr; bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse"); switch (bo_reuse_mode) { case DRI_CONF_BO_REUSE_DISABLED: break; case DRI_CONF_BO_REUSE_ALL: intel_bufmgr_gem_enable_reuse(intel->bufmgr); break; } /* This doesn't yet catch all non-conformant rendering, but it's a * start. */ if (getenv("INTEL_STRICT_CONFORMANCE")) { unsigned int value = atoi(getenv("INTEL_STRICT_CONFORMANCE")); if (value > 0) { intel->conformance_mode = value; } else { intel->conformance_mode = 1; } } if (intel->conformance_mode > 0) { ctx->Const.MinLineWidth = 1.0; ctx->Const.MinLineWidthAA = 1.0; ctx->Const.MaxLineWidth = 1.0; ctx->Const.MaxLineWidthAA = 1.0; ctx->Const.LineWidthGranularity = 1.0; } else { ctx->Const.MinLineWidth = 1.0; ctx->Const.MinLineWidthAA = 1.0; ctx->Const.MaxLineWidth = 5.0; ctx->Const.MaxLineWidthAA = 5.0; ctx->Const.LineWidthGranularity = 0.5; } ctx->Const.MinPointSize = 1.0; ctx->Const.MinPointSizeAA = 1.0; ctx->Const.MaxPointSize = 255.0; ctx->Const.MaxPointSizeAA = 3.0; ctx->Const.PointSizeGranularity = 1.0; ctx->Const.MaxSamples = 1.0; /* reinitialize the context point state. * It depend on constants in __struct gl_contextRec::Const */ _mesa_init_point(ctx); if (intel->gen >= 4) { ctx->Const.sRGBCapable = GL_TRUE; if (MAX_WIDTH > 8192) ctx->Const.MaxRenderbufferSize = 8192; } else { if (MAX_WIDTH > 2048) ctx->Const.MaxRenderbufferSize = 2048; } /* Initialize the software rasterizer and helper modules. */ _swrast_CreateContext(ctx); _vbo_CreateContext(ctx); _tnl_CreateContext(ctx); _swsetup_CreateContext(ctx); /* Configure swrast to match hardware characteristics: */ _swrast_allow_pixel_fog(ctx, GL_FALSE); _swrast_allow_vertex_fog(ctx, GL_TRUE); _mesa_meta_init(ctx); intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24; intel->hw_stipple = 1; /* XXX FBO: this doesn't seem to be used anywhere */ switch (mesaVis->depthBits) { case 0: /* what to do in this case? */ case 16: intel->polygon_offset_scale = 1.0; break; case 24: intel->polygon_offset_scale = 2.0; /* req'd to pass glean */ break; default: assert(0); break; } if (intel->gen >= 4) intel->polygon_offset_scale /= 0xffff; intel->RenderIndex = ~0; switch (ctx->API) { case API_OPENGL: intelInitExtensions(ctx); break; case API_OPENGLES: break; case API_OPENGLES2: intelInitExtensionsES2(ctx); break; } INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control); if (INTEL_DEBUG & DEBUG_BUFMGR) dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE); intel_batchbuffer_init(intel); intel_fbo_init(intel); if (intel->ctx.Mesa_DXTn) { _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc"); _mesa_enable_extension(ctx, "GL_S3_s3tc"); } else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) { _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc"); } intel->use_texture_tiling = driQueryOptionb(&intel->optionCache, "texture_tiling"); intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z"); intel->prim.primitive = ~0; /* Force all software fallbacks */ if (driQueryOptionb(&intel->optionCache, "no_rast")) { fprintf(stderr, "disabling 3D rasterization\n"); intel->no_rast = 1; } if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) { fprintf(stderr, "flushing batchbuffer before/after each draw call\n"); intel->always_flush_batch = 1; } if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) { fprintf(stderr, "flushing GPU caches before/after each draw call\n"); intel->always_flush_cache = 1; } return GL_TRUE; } void intelDestroyContext(__DRIcontext * driContextPriv) { struct intel_context *intel = (struct intel_context *) driContextPriv->driverPrivate; assert(intel); /* should never be null */ if (intel) { INTEL_FIREVERTICES(intel); _mesa_meta_free(&intel->ctx); intel->vtbl.destroy(intel); _swsetup_DestroyContext(&intel->ctx); _tnl_DestroyContext(&intel->ctx); _vbo_DestroyContext(&intel->ctx); _swrast_DestroyContext(&intel->ctx); intel->Fallback = 0x0; /* don't call _swrast_Flush later */ intel_batchbuffer_free(intel); free(intel->prim.vb); intel->prim.vb = NULL; drm_intel_bo_unreference(intel->prim.vb_bo); intel->prim.vb_bo = NULL; drm_intel_bo_unreference(intel->first_post_swapbuffers_batch); intel->first_post_swapbuffers_batch = NULL; driDestroyOptionCache(&intel->optionCache); /* free the Mesa context */ _mesa_free_context_data(&intel->ctx); _math_matrix_dtr(&intel->ViewportMatrix); ralloc_free(intel); driContextPriv->driverPrivate = NULL; } } GLboolean intelUnbindContext(__DRIcontext * driContextPriv) { /* Unset current context and dispath table */ _mesa_make_current(NULL, NULL, NULL); return GL_TRUE; } GLboolean intelMakeCurrent(__DRIcontext * driContextPriv, __DRIdrawable * driDrawPriv, __DRIdrawable * driReadPriv) { struct intel_context *intel; GET_CURRENT_CONTEXT(curCtx); if (driContextPriv) intel = (struct intel_context *) driContextPriv->driverPrivate; else intel = NULL; /* According to the glXMakeCurrent() man page: "Pending commands to * the previous context, if any, are flushed before it is released." * But only flush if we're actually changing contexts. */ if (intel_context(curCtx) && intel_context(curCtx) != intel) { _mesa_flush(curCtx); } if (driContextPriv) { struct gl_framebuffer *fb, *readFb; if (driDrawPriv == NULL && driReadPriv == NULL) { fb = _mesa_get_incomplete_framebuffer(); readFb = _mesa_get_incomplete_framebuffer(); } else { fb = driDrawPriv->driverPrivate; readFb = driReadPriv->driverPrivate; driContextPriv->dri2.draw_stamp = driDrawPriv->dri2.stamp - 1; driContextPriv->dri2.read_stamp = driReadPriv->dri2.stamp - 1; } intel_prepare_render(intel); _mesa_make_current(&intel->ctx, fb, readFb); /* We do this in intel_prepare_render() too, but intel->ctx.DrawBuffer * is NULL at that point. We can't call _mesa_makecurrent() * first, since we need the buffer size for the initial * viewport. So just call intel_draw_buffer() again here. */ intel_draw_buffer(&intel->ctx, intel->ctx.DrawBuffer); } else { _mesa_make_current(NULL, NULL, NULL); } return GL_TRUE; } /** * \brief Query DRI2 to obtain a DRIdrawable's buffers. * * To determine which DRI buffers to request, examine the renderbuffers * attached to the drawable's framebuffer. Then request the buffers with * DRI2GetBuffers() or DRI2GetBuffersWithFormat(). * * This is called from intel_update_renderbuffers(). It is used only if either * the hardware or the X driver lacks separate stencil support. * * \param drawable Drawable whose buffers are queried. * \param buffers [out] List of buffers returned by DRI2 query. * \param buffer_count [out] Number of buffers returned. * * \see intel_update_renderbuffers() * \see DRI2GetBuffers() * \see DRI2GetBuffersWithFormat() */ static void intel_query_dri2_buffers_no_separate_stencil(struct intel_context *intel, __DRIdrawable *drawable, __DRIbuffer **buffers, int *buffer_count) { assert(!intel->must_use_separate_stencil); __DRIscreen *screen = intel->intelScreen->driScrnPriv; struct gl_framebuffer *fb = drawable->driverPrivate; if (screen->dri2.loader && screen->dri2.loader->base.version > 2 && screen->dri2.loader->getBuffersWithFormat != NULL) { int i = 0; const int max_attachments = 4; unsigned *attachments = calloc(2 * max_attachments, sizeof(unsigned)); struct intel_renderbuffer *front_rb; struct intel_renderbuffer *back_rb; struct intel_renderbuffer *depth_rb; struct intel_renderbuffer *stencil_rb; front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT); back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT); depth_rb = intel_get_renderbuffer(fb, BUFFER_DEPTH); stencil_rb = intel_get_renderbuffer(fb, BUFFER_STENCIL); if ((intel->is_front_buffer_rendering || intel->is_front_buffer_reading || !back_rb) && front_rb) { attachments[i++] = __DRI_BUFFER_FRONT_LEFT; attachments[i++] = intel_bits_per_pixel(front_rb); } if (back_rb) { attachments[i++] = __DRI_BUFFER_BACK_LEFT; attachments[i++] = intel_bits_per_pixel(back_rb); } if (depth_rb && stencil_rb) { attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL; attachments[i++] = intel_bits_per_pixel(depth_rb); } else if (depth_rb) { attachments[i++] = __DRI_BUFFER_DEPTH; attachments[i++] = intel_bits_per_pixel(depth_rb); } else if (stencil_rb) { attachments[i++] = __DRI_BUFFER_STENCIL; attachments[i++] = intel_bits_per_pixel(stencil_rb); } assert(i <= 2 * max_attachments); *buffers = screen->dri2.loader->getBuffersWithFormat(drawable, &drawable->w, &drawable->h, attachments, i / 2, buffer_count, drawable->loaderPrivate); free(attachments); } else if (screen->dri2.loader) { int i = 0; const int max_attachments = 4; unsigned *attachments = calloc(max_attachments, sizeof(unsigned)); if (intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT)) attachments[i++] = __DRI_BUFFER_FRONT_LEFT; if (intel_get_renderbuffer(fb, BUFFER_BACK_LEFT)) attachments[i++] = __DRI_BUFFER_BACK_LEFT; if (intel_get_renderbuffer(fb, BUFFER_DEPTH)) attachments[i++] = __DRI_BUFFER_DEPTH; if (intel_get_renderbuffer(fb, BUFFER_STENCIL)) attachments[i++] = __DRI_BUFFER_STENCIL; assert(i <= max_attachments); *buffers = screen->dri2.loader->getBuffersWithFormat(drawable, &drawable->w, &drawable->h, attachments, i, buffer_count, drawable->loaderPrivate); free(attachments); } else { *buffers = NULL; *buffer_count = 0; } } /** * \brief Assign a DRI buffer's DRM region to a renderbuffer. * * This is called from intel_update_renderbuffers(). It is used only if * either the hardware or the X driver lacks separate stencil support. * * \par Note: * DRI buffers whose attachment point is DRI2BufferStencil or * DRI2BufferDepthStencil are handled as special cases. * * \param buffer_name is a human readable name, such as "dri2 front buffer", * that is passed to intel_region_alloc_for_handle(). * * \see intel_update_renderbuffers() * \see intel_region_alloc_for_handle() */ static void intel_process_dri2_buffer_no_separate_stencil(struct intel_context *intel, __DRIdrawable *drawable, __DRIbuffer *buffer, struct intel_renderbuffer *rb, const char *buffer_name) { assert(!intel->must_use_separate_stencil); struct gl_framebuffer *fb = drawable->driverPrivate; struct intel_renderbuffer *depth_rb = NULL; if (!rb) return; if (rb->region && rb->region->name == buffer->name) return; if (unlikely(INTEL_DEBUG & DEBUG_DRI)) { fprintf(stderr, "attaching buffer %d, at %d, cpp %d, pitch %d\n", buffer->name, buffer->attachment, buffer->cpp, buffer->pitch); } bool identify_depth_and_stencil = false; if (buffer->attachment == __DRI_BUFFER_STENCIL) { struct intel_renderbuffer *depth_rb = intel_get_renderbuffer(fb, BUFFER_DEPTH); identify_depth_and_stencil = depth_rb && depth_rb->region; } if (identify_depth_and_stencil) { if (unlikely(INTEL_DEBUG & DEBUG_DRI)) { fprintf(stderr, "(reusing depth buffer as stencil)\n"); } intel_region_reference(&rb->region, depth_rb->region); } else { intel_region_release(&rb->region); rb->region = intel_region_alloc_for_handle(intel->intelScreen, buffer->cpp, drawable->w, drawable->h, buffer->pitch / buffer->cpp, buffer->name, buffer_name); } if (buffer->attachment == __DRI_BUFFER_DEPTH_STENCIL) { struct intel_renderbuffer *stencil_rb = intel_get_renderbuffer(fb, BUFFER_STENCIL); if (!stencil_rb) return; /* The rb passed in is the BUFFER_DEPTH attachment, and we need * to associate this region to BUFFER_STENCIL as well. */ intel_region_reference(&stencil_rb->region, rb->region); } } /** * \brief Query DRI2 to obtain a DRIdrawable's buffers. * * To determine which DRI buffers to request, examine the renderbuffers * attached to the drawable's framebuffer. Then request the buffers with * DRI2GetBuffersWithFormat(). * * This is called from intel_update_renderbuffers(). It is used when 1) the * hardware supports separate stencil and 2) the X driver's separate stencil * support has been verified to work or is still unknown. * * \param drawable Drawable whose buffers are queried. * \param buffers [out] List of buffers returned by DRI2 query. * \param buffer_count [out] Number of buffers returned. * \param attachments [out] List of pairs (attachment_point, bits_per_pixel) * that were submitted in the DRI2 query. Number of pairs * is same as buffer_count. * * \see intel_update_renderbuffers() * \see DRI2GetBuffersWithFormat() * \see enum intel_dri2_has_hiz */ static void intel_query_dri2_buffers_with_separate_stencil(struct intel_context *intel, __DRIdrawable *drawable, __DRIbuffer **buffers, unsigned **attachments, int *count) { assert(intel->has_separate_stencil); __DRIscreen *screen = intel->intelScreen->driScrnPriv; struct gl_framebuffer *fb = drawable->driverPrivate; const int max_attachments = 5; int i = 0; *attachments = calloc(2 * max_attachments, sizeof(unsigned)); if (!*attachments) { *buffers = NULL; *count = 0; return; } struct intel_renderbuffer *front_rb; struct intel_renderbuffer *back_rb; struct intel_renderbuffer *depth_rb; struct intel_renderbuffer *stencil_rb; front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT); back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT); depth_rb = intel_get_renderbuffer(fb, BUFFER_DEPTH); stencil_rb = intel_get_renderbuffer(fb, BUFFER_STENCIL); if ((intel->is_front_buffer_rendering || intel->is_front_buffer_reading || !back_rb) && front_rb) { (*attachments)[i++] = __DRI_BUFFER_FRONT_LEFT; (*attachments)[i++] = intel_bits_per_pixel(front_rb); } if (back_rb) { (*attachments)[i++] = __DRI_BUFFER_BACK_LEFT; (*attachments)[i++] = intel_bits_per_pixel(back_rb); } /* * We request a separate stencil buffer, and perhaps a hiz buffer too, even * if we do not yet know if the X driver supports it. See the comments for * 'enum intel_dri2_has_hiz'. */ if (depth_rb) { (*attachments)[i++] = __DRI_BUFFER_DEPTH; (*attachments)[i++] = intel_bits_per_pixel(depth_rb); if (intel->vtbl.is_hiz_depth_format(intel, depth_rb->Base.Format)) { /* Depth and hiz buffer have same bpp. */ (*attachments)[i++] = __DRI_BUFFER_HIZ; (*attachments)[i++] = intel_bits_per_pixel(depth_rb); } } if (stencil_rb) { assert(stencil_rb->Base.Format == MESA_FORMAT_S8); (*attachments)[i++] = __DRI_BUFFER_STENCIL; (*attachments)[i++] = intel_bits_per_pixel(stencil_rb); } assert(i <= 2 * max_attachments); *buffers = screen->dri2.loader->getBuffersWithFormat(drawable, &drawable->w, &drawable->h, *attachments, i / 2, count, drawable->loaderPrivate); if (!*buffers) { free(*attachments); *attachments = NULL; *count = 0; } } /** * \brief Assign a DRI buffer's DRM region to a renderbuffer. * * This is called from intel_update_renderbuffers(). It is used when 1) the * hardware supports separate stencil and 2) the X driver's separate stencil * support has been verified to work or is still unknown. * * \par Note: * DRI buffers whose attachment point is DRI2BufferStencil or DRI2BufferHiz * are handled as special cases. * * \param buffer_name is a human readable name, such as "dri2 front buffer", * that is passed to intel_region_alloc_for_handle(). * * \see intel_update_renderbuffers() * \see intel_region_alloc_for_handle() * \see enum intel_dri2_has_hiz */ static void intel_process_dri2_buffer_with_separate_stencil(struct intel_context *intel, __DRIdrawable *drawable, __DRIbuffer *buffer, struct intel_renderbuffer *rb, const char *buffer_name) { assert(intel->has_separate_stencil); assert(buffer->attachment != __DRI_BUFFER_DEPTH_STENCIL); if (!rb) return; /* If the renderbuffer's and DRIbuffer's regions match, then continue. */ if ((buffer->attachment != __DRI_BUFFER_HIZ && rb->region && rb->region->name == buffer->name) || (buffer->attachment == __DRI_BUFFER_HIZ && rb->hiz_region && rb->hiz_region->name == buffer->name)) { return; } if (unlikely(INTEL_DEBUG & DEBUG_DRI)) { fprintf(stderr, "attaching buffer %d, at %d, cpp %d, pitch %d\n", buffer->name, buffer->attachment, buffer->cpp, buffer->pitch); } /* * The stencil buffer has quirky pitch requirements. From Section * 2.11.5.6.2.1 3DSTATE_STENCIL_BUFFER, field "Surface Pitch": * The pitch must be set to 2x the value computed based on width, as * the stencil buffer is stored with two rows interleaved. * If we neglect to double the pitch, then drm_intel_gem_bo_map_gtt() * maps the memory incorrectly. * * To satisfy the pitch requirement, the X driver hackishly allocated * the gem buffer with bpp doubled and height halved. So buffer->cpp is * correct, but drawable->height is not. */ int buffer_height = drawable->h; if (buffer->attachment == __DRI_BUFFER_STENCIL) { buffer_height /= 2; } struct intel_region *region = intel_region_alloc_for_handle(intel->intelScreen, buffer->cpp, drawable->w, buffer_height, buffer->pitch / buffer->cpp, buffer->name, buffer_name); if (buffer->attachment == __DRI_BUFFER_HIZ) { intel_region_reference(&rb->hiz_region, region); } else { intel_region_reference(&rb->region, region); } intel_region_release(®ion); } /** * \brief Verify that the X driver supports hiz and separate stencil. * * This implements the cleanup stage of the handshake described in the * comments for 'enum intel_dri2_has_hiz'. * * This should be called from intel_update_renderbuffers() after 1) the * DRIdrawable has been queried for its buffers via DRI2GetBuffersWithFormat() * and 2) the DRM region of each returned DRIbuffer has been assigned to the * appropriate intel_renderbuffer. Furthermore, this should be called *only* * when 1) intel_update_renderbuffers() tried to used the X driver's separate * stencil functionality and 2) it has not yet been determined if the X driver * supports separate stencil. * * If we determine that the X driver does have support, then we set * intel_screen.dri2_has_hiz to true and return. * * If we determine that the X driver lacks support, and we requested * a DRI2BufferDepth and DRI2BufferStencil, then we must remedy the mistake by * taking the following actions: * 1. Discard the framebuffer's stencil and depth renderbuffers. * 2. Create a combined depth/stencil renderbuffer and attach * it to the framebuffer's depth and stencil attachment points. * 3. Query the drawable for a new set of buffers, which consists of the * originally requested set plus DRI2BufferDepthStencil. * 4. Assign the DRI2BufferDepthStencil's DRM region to the new * depth/stencil renderbuffer. * * \pre intel->intelScreen->dri2_has_hiz == INTEL_DRI2_HAS_HIZ_UNKNOWN * * \param drawable Drawable whose buffers were queried. * * \param buffers [in/out] As input, the buffer list returned by the * original DRI2 query. As output, the current buffer * list, which may have been altered by a new DRI2 query. * * \param attachments [in/out] As input, the attachment list submitted * in the original DRI2 query. As output, the attachment * list that was submitted in the DRI2 query that * obtained the current buffer list, as returned in the * output parameter \c buffers. (Note: If no new query * was made, then the list remains unaltered). * * \param count [out] Number of buffers in the current buffer list, as * returned in the output parameter \c buffers. * * \see enum intel_dri2_has_hiz * \see struct intel_screen::dri2_has_hiz * \see intel_update_renderbuffers */ static void intel_verify_dri2_has_hiz(struct intel_context *intel, __DRIdrawable *drawable, __DRIbuffer **buffers, unsigned **attachments, int *count) { assert(intel->intelScreen->dri2_has_hiz == INTEL_DRI2_HAS_HIZ_UNKNOWN); struct gl_framebuffer *fb = drawable->driverPrivate; struct intel_renderbuffer *stencil_rb = intel_get_renderbuffer(fb, BUFFER_STENCIL); if (stencil_rb) { /* * We requested a DRI2BufferStencil without knowing if the X driver * supports it. Now, check if X handled the request correctly and clean * up if it did not. (See comments for 'enum intel_dri2_has_hiz'). */ struct intel_renderbuffer *depth_rb = intel_get_renderbuffer(fb, BUFFER_DEPTH); assert(stencil_rb->Base.Format == MESA_FORMAT_S8); assert(depth_rb && depth_rb->Base.Format == MESA_FORMAT_X8_Z24); if (stencil_rb->region->tiling == I915_TILING_NONE) { /* * The stencil buffer is actually W tiled. The region's tiling is * I915_TILING_NONE, however, because the GTT is incapable of W * fencing. */ intel->intelScreen->dri2_has_hiz = INTEL_DRI2_HAS_HIZ_TRUE; return; } else { /* * Oops... the screen doesn't support separate stencil. Discard the * separate depth and stencil buffers and replace them with * a combined depth/stencil buffer. Discard the hiz buffer too. */ intel->intelScreen->dri2_has_hiz = INTEL_DRI2_HAS_HIZ_FALSE; /* 1. Discard depth and stencil renderbuffers. */ _mesa_remove_renderbuffer(fb, BUFFER_DEPTH); depth_rb = NULL; _mesa_remove_renderbuffer(fb, BUFFER_STENCIL); stencil_rb = NULL; /* 2. Create new depth/stencil renderbuffer. */ struct intel_renderbuffer *depth_stencil_rb = intel_create_renderbuffer(MESA_FORMAT_S8_Z24); _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depth_stencil_rb->Base); _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &depth_stencil_rb->Base); /* 3. Append DRI2BufferDepthStencil to attachment list. */ int old_count = *count; unsigned int *old_attachments = *attachments; *count = old_count + 1; *attachments = malloc(2 * (*count) * sizeof(unsigned)); memcpy(*attachments, old_attachments, 2 * old_count * sizeof(unsigned)); free(old_attachments); (*attachments)[2 * old_count + 0] = __DRI_BUFFER_DEPTH_STENCIL; (*attachments)[2 * old_count + 1] = intel_bits_per_pixel(depth_stencil_rb); /* 4. Request new set of DRI2 attachments. */ __DRIscreen *screen = intel->intelScreen->driScrnPriv; *buffers = screen->dri2.loader->getBuffersWithFormat(drawable, &drawable->w, &drawable->h, *attachments, *count, count, drawable->loaderPrivate); if (!*buffers) return; /* * I don't know how to recover from the failure assertion below. * Rather than fail gradually and unexpectedly, we should just die * now. */ assert(*count == old_count + 1); /* 5. Assign the DRI buffer's DRM region to the its renderbuffers. */ __DRIbuffer *depth_stencil_buffer = NULL; for (int i = 0; i < *count; ++i) { if ((*buffers)[i].attachment == __DRI_BUFFER_DEPTH_STENCIL) { depth_stencil_buffer = &(*buffers)[i]; break; } } struct intel_region *region = intel_region_alloc_for_handle(intel->intelScreen, depth_stencil_buffer->cpp, drawable->w, drawable->h, depth_stencil_buffer->pitch / depth_stencil_buffer->cpp, depth_stencil_buffer->name, "dri2 depth / stencil buffer"); intel_region_reference(&intel_get_renderbuffer(fb, BUFFER_DEPTH)->region, region); intel_region_reference(&intel_get_renderbuffer(fb, BUFFER_STENCIL)->region, region); intel_region_release(®ion); } } if (intel_framebuffer_has_hiz(fb)) { /* * In the future, the driver may advertise a GL config with hiz * compatible depth bits and 0 stencil bits (for example, when the * driver gains support for float32 depth buffers). When that day comes, * here we need to verify that the X driver does in fact support hiz and * clean up if it doesn't. * * Presently, however, no verification or clean up is necessary, and * execution should not reach here. If the framebuffer still has a hiz * region, then we have already set dri2_has_hiz to true after * confirming above that the stencil buffer is W tiled. */ assert(0); } }