| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| |
| #include "GrGLCaps.h" |
| |
| #include "GrContextOptions.h" |
| #include "GrGLContext.h" |
| #include "GrGLRenderTarget.h" |
| #include "glsl/GrGLSLCaps.h" |
| #include "SkTSearch.h" |
| #include "SkTSort.h" |
| |
| GrGLCaps::GrGLCaps(const GrContextOptions& contextOptions, |
| const GrGLContextInfo& ctxInfo, |
| const GrGLInterface* glInterface) : INHERITED(contextOptions) { |
| fStandard = ctxInfo.standard(); |
| |
| fStencilFormats.reset(); |
| fMSFBOType = kNone_MSFBOType; |
| fInvalidateFBType = kNone_InvalidateFBType; |
| fMapBufferType = kNone_MapBufferType; |
| fTransferBufferType = kNone_TransferBufferType; |
| fMaxFragmentUniformVectors = 0; |
| fMaxVertexAttributes = 0; |
| fMaxFragmentTextureUnits = 0; |
| fUnpackRowLengthSupport = false; |
| fUnpackFlipYSupport = false; |
| fPackRowLengthSupport = false; |
| fPackFlipYSupport = false; |
| fTextureUsageSupport = false; |
| fTexStorageSupport = false; |
| fTextureRedSupport = false; |
| fImagingSupport = false; |
| fVertexArrayObjectSupport = false; |
| fDirectStateAccessSupport = false; |
| fDebugSupport = false; |
| fES2CompatibilitySupport = false; |
| fMultisampleDisableSupport = false; |
| fUseNonVBOVertexAndIndexDynamicData = false; |
| fIsCoreProfile = false; |
| fBindFragDataLocationSupport = false; |
| fExternalTextureSupport = false; |
| fRectangleTextureSupport = false; |
| fTextureSwizzleSupport = false; |
| fSRGBWriteControl = false; |
| fRGBA8888PixelsOpsAreSlow = false; |
| fPartialFBOReadIsSlow = false; |
| |
| fShaderCaps.reset(new GrGLSLCaps(contextOptions)); |
| |
| this->init(contextOptions, ctxInfo, glInterface); |
| } |
| |
| void GrGLCaps::init(const GrContextOptions& contextOptions, |
| const GrGLContextInfo& ctxInfo, |
| const GrGLInterface* gli) { |
| GrGLStandard standard = ctxInfo.standard(); |
| GrGLVersion version = ctxInfo.version(); |
| |
| /************************************************************************** |
| * Caps specific to GrGLCaps |
| **************************************************************************/ |
| |
| if (kGLES_GrGLStandard == standard) { |
| GR_GL_GetIntegerv(gli, GR_GL_MAX_FRAGMENT_UNIFORM_VECTORS, |
| &fMaxFragmentUniformVectors); |
| } else { |
| SkASSERT(kGL_GrGLStandard == standard); |
| GrGLint max; |
| GR_GL_GetIntegerv(gli, GR_GL_MAX_FRAGMENT_UNIFORM_COMPONENTS, &max); |
| fMaxFragmentUniformVectors = max / 4; |
| if (version >= GR_GL_VER(3, 2)) { |
| GrGLint profileMask; |
| GR_GL_GetIntegerv(gli, GR_GL_CONTEXT_PROFILE_MASK, &profileMask); |
| fIsCoreProfile = SkToBool(profileMask & GR_GL_CONTEXT_CORE_PROFILE_BIT); |
| } |
| } |
| GR_GL_GetIntegerv(gli, GR_GL_MAX_VERTEX_ATTRIBS, &fMaxVertexAttributes); |
| GR_GL_GetIntegerv(gli, GR_GL_MAX_TEXTURE_IMAGE_UNITS, &fMaxFragmentTextureUnits); |
| |
| if (kGL_GrGLStandard == standard) { |
| fUnpackRowLengthSupport = true; |
| fUnpackFlipYSupport = false; |
| fPackRowLengthSupport = true; |
| fPackFlipYSupport = false; |
| } else { |
| fUnpackRowLengthSupport = version >= GR_GL_VER(3,0) || |
| ctxInfo.hasExtension("GL_EXT_unpack_subimage"); |
| fUnpackFlipYSupport = ctxInfo.hasExtension("GL_CHROMIUM_flipy"); |
| fPackRowLengthSupport = version >= GR_GL_VER(3,0) || |
| ctxInfo.hasExtension("GL_NV_pack_subimage"); |
| fPackFlipYSupport = |
| ctxInfo.hasExtension("GL_ANGLE_pack_reverse_row_order"); |
| } |
| |
| fTextureUsageSupport = (kGLES_GrGLStandard == standard) && |
| ctxInfo.hasExtension("GL_ANGLE_texture_usage"); |
| |
| if (kGL_GrGLStandard == standard) { |
| // The EXT version can apply to either GL or GLES. |
| fTexStorageSupport = version >= GR_GL_VER(4,2) || |
| ctxInfo.hasExtension("GL_ARB_texture_storage") || |
| ctxInfo.hasExtension("GL_EXT_texture_storage"); |
| } else { |
| // Qualcomm Adreno drivers appear to have issues with texture storage. |
| fTexStorageSupport = (version >= GR_GL_VER(3,0) && |
| kQualcomm_GrGLVendor != ctxInfo.vendor()) || |
| ctxInfo.hasExtension("GL_EXT_texture_storage"); |
| } |
| |
| if (kGL_GrGLStandard == standard) { |
| fTextureBarrierSupport = version >= GR_GL_VER(4,5) || |
| ctxInfo.hasExtension("GL_ARB_texture_barrier") || |
| ctxInfo.hasExtension("GL_NV_texture_barrier"); |
| } else { |
| fTextureBarrierSupport = ctxInfo.hasExtension("GL_NV_texture_barrier"); |
| } |
| |
| // ARB_texture_rg is part of OpenGL 3.0, but mesa doesn't support GL_RED |
| // and GL_RG on FBO textures. |
| if (kMesa_GrGLDriver != ctxInfo.driver()) { |
| if (kGL_GrGLStandard == standard) { |
| fTextureRedSupport = version >= GR_GL_VER(3,0) || |
| ctxInfo.hasExtension("GL_ARB_texture_rg"); |
| } else { |
| fTextureRedSupport = version >= GR_GL_VER(3,0) || |
| ctxInfo.hasExtension("GL_EXT_texture_rg"); |
| } |
| } |
| fImagingSupport = kGL_GrGLStandard == standard && |
| ctxInfo.hasExtension("GL_ARB_imaging"); |
| |
| // SGX and Mali GPUs that are based on a tiled-deferred architecture that have trouble with |
| // frequently changing VBOs. We've measured a performance increase using non-VBO vertex |
| // data for dynamic content on these GPUs. Perhaps we should read the renderer string and |
| // limit this decision to specific GPU families rather than basing it on the vendor alone. |
| if (!GR_GL_MUST_USE_VBO && |
| (kARM_GrGLVendor == ctxInfo.vendor() || |
| kImagination_GrGLVendor == ctxInfo.vendor() || |
| kQualcomm_GrGLVendor == ctxInfo.vendor())) { |
| fUseNonVBOVertexAndIndexDynamicData = true; |
| } |
| |
| // A driver but on the nexus 6 causes incorrect dst copies when invalidate is called beforehand. |
| // Thus we are blacklisting this extension for now on Adreno4xx devices. |
| if (kAdreno4xx_GrGLRenderer != ctxInfo.renderer() && |
| ((kGL_GrGLStandard == standard && version >= GR_GL_VER(4,3)) || |
| (kGLES_GrGLStandard == standard && version >= GR_GL_VER(3,0)) || |
| ctxInfo.hasExtension("GL_ARB_invalidate_subdata"))) { |
| fDiscardRenderTargetSupport = true; |
| fInvalidateFBType = kInvalidate_InvalidateFBType; |
| } else if (ctxInfo.hasExtension("GL_EXT_discard_framebuffer")) { |
| fDiscardRenderTargetSupport = true; |
| fInvalidateFBType = kDiscard_InvalidateFBType; |
| } |
| |
| if (kARM_GrGLVendor == ctxInfo.vendor() || kImagination_GrGLVendor == ctxInfo.vendor()) { |
| fFullClearIsFree = true; |
| } |
| |
| if (kGL_GrGLStandard == standard) { |
| fVertexArrayObjectSupport = version >= GR_GL_VER(3, 0) || |
| ctxInfo.hasExtension("GL_ARB_vertex_array_object") || |
| ctxInfo.hasExtension("GL_APPLE_vertex_array_object"); |
| } else { |
| fVertexArrayObjectSupport = version >= GR_GL_VER(3, 0) || |
| ctxInfo.hasExtension("GL_OES_vertex_array_object"); |
| } |
| |
| if (kGL_GrGLStandard == standard) { |
| fDirectStateAccessSupport = ctxInfo.hasExtension("GL_EXT_direct_state_access"); |
| } else { |
| fDirectStateAccessSupport = false; |
| } |
| |
| if (kGL_GrGLStandard == standard && version >= GR_GL_VER(4,3)) { |
| fDebugSupport = true; |
| } else { |
| fDebugSupport = ctxInfo.hasExtension("GL_KHR_debug"); |
| } |
| |
| if (kGL_GrGLStandard == standard) { |
| fES2CompatibilitySupport = ctxInfo.hasExtension("GL_ARB_ES2_compatibility"); |
| } |
| else { |
| fES2CompatibilitySupport = true; |
| } |
| |
| if (kGL_GrGLStandard == standard) { |
| fMultisampleDisableSupport = true; |
| } else { |
| fMultisampleDisableSupport = ctxInfo.hasExtension("GL_EXT_multisample_compatibility"); |
| } |
| |
| if (kGL_GrGLStandard == standard) { |
| if (version >= GR_GL_VER(3, 0)) { |
| fBindFragDataLocationSupport = true; |
| } |
| } else { |
| if (version >= GR_GL_VER(3, 0) && ctxInfo.hasExtension("GL_EXT_blend_func_extended")) { |
| fBindFragDataLocationSupport = true; |
| } |
| } |
| |
| #if 0 // Disabled due to https://bug.skia.org/4454 |
| fBindUniformLocationSupport = ctxInfo.hasExtension("GL_CHROMIUM_bind_uniform_location"); |
| #else |
| fBindUniformLocationSupport = false; |
| #endif |
| |
| if (ctxInfo.hasExtension("GL_OES_EGL_image_external")) { |
| if (ctxInfo.glslGeneration() == k110_GrGLSLGeneration) { |
| fExternalTextureSupport = true; |
| } else if (ctxInfo.hasExtension("GL_OES_EGL_image_external_essl3") || |
| ctxInfo.hasExtension("OES_EGL_image_external_essl3")) { |
| // At least one driver has been found that has this extension without the "GL_" prefix. |
| fExternalTextureSupport = true; |
| } |
| } |
| |
| if ((kGL_GrGLStandard == standard && version >= GR_GL_VER(3, 1)) || |
| ctxInfo.hasExtension("GL_ARB_texture_rectangle")) { |
| // We also require textureSize() support for rectangle 2D samplers which was added in GLSL |
| // 1.40. |
| if (ctxInfo.glslGeneration() >= k140_GrGLSLGeneration) { |
| fRectangleTextureSupport = true; |
| } |
| } |
| |
| if (kGL_GrGLStandard == standard) { |
| if (version >= GR_GL_VER(3,3) || ctxInfo.hasExtension("GL_ARB_texture_swizzle")) { |
| fTextureSwizzleSupport = true; |
| } |
| } else { |
| if (version >= GR_GL_VER(3,0)) { |
| fTextureSwizzleSupport = true; |
| } |
| } |
| |
| #ifdef SK_BUILD_FOR_WIN |
| // We're assuming that on Windows Chromium we're using ANGLE. |
| bool isANGLE = kANGLE_GrGLDriver == ctxInfo.driver() || |
| kChromium_GrGLDriver == ctxInfo.driver(); |
| // Angle has slow read/write pixel paths for 32bit RGBA (but fast for BGRA). |
| fRGBA8888PixelsOpsAreSlow = isANGLE; |
| // On DX9 ANGLE reading a partial FBO is slow. TODO: Check whether this is still true and |
| // check DX11 ANGLE. |
| fPartialFBOReadIsSlow = isANGLE; |
| #endif |
| |
| /************************************************************************** |
| * GrShaderCaps fields |
| **************************************************************************/ |
| |
| // This must be called after fCoreProfile is set on the GrGLCaps |
| this->initGLSL(ctxInfo); |
| GrGLSLCaps* glslCaps = static_cast<GrGLSLCaps*>(fShaderCaps.get()); |
| |
| glslCaps->fPathRenderingSupport = this->hasPathRenderingSupport(ctxInfo, gli); |
| |
| // For now these two are equivalent but we could have dst read in shader via some other method. |
| // Before setting this, initGLSL() must have been called. |
| glslCaps->fDstReadInShaderSupport = glslCaps->fFBFetchSupport; |
| |
| // Enable supported shader-related caps |
| if (kGL_GrGLStandard == standard) { |
| glslCaps->fDualSourceBlendingSupport = (ctxInfo.version() >= GR_GL_VER(3, 3) || |
| ctxInfo.hasExtension("GL_ARB_blend_func_extended")) && |
| GrGLSLSupportsNamedFragmentShaderOutputs(ctxInfo.glslGeneration()); |
| glslCaps->fShaderDerivativeSupport = true; |
| // we don't support GL_ARB_geometry_shader4, just GL 3.2+ GS |
| glslCaps->fGeometryShaderSupport = ctxInfo.version() >= GR_GL_VER(3, 2) && |
| ctxInfo.glslGeneration() >= k150_GrGLSLGeneration; |
| } |
| else { |
| glslCaps->fDualSourceBlendingSupport = ctxInfo.hasExtension("GL_EXT_blend_func_extended"); |
| |
| glslCaps->fShaderDerivativeSupport = ctxInfo.version() >= GR_GL_VER(3, 0) || |
| ctxInfo.hasExtension("GL_OES_standard_derivatives"); |
| } |
| |
| /************************************************************************** |
| * GrCaps fields |
| **************************************************************************/ |
| |
| // We need dual source blending and the ability to disable multisample in order to support mixed |
| // samples in every corner case. |
| if (fMultisampleDisableSupport && |
| glslCaps->dualSourceBlendingSupport() && |
| fShaderCaps->pathRenderingSupport()) { |
| fUsesMixedSamples = ctxInfo.hasExtension("GL_NV_framebuffer_mixed_samples") || |
| ctxInfo.hasExtension("GL_CHROMIUM_framebuffer_mixed_samples"); |
| // Workaround NVIDIA bug related to glInvalidateFramebuffer and mixed samples. |
| if (fUsesMixedSamples && (kNVIDIA_GrGLDriver == ctxInfo.driver() || |
| kChromium_GrGLDriver == ctxInfo.driver())) { |
| fDiscardRenderTargetSupport = false; |
| fInvalidateFBType = kNone_InvalidateFBType; |
| } |
| } |
| |
| // fUsesMixedSamples must be set before calling initFSAASupport. |
| this->initFSAASupport(ctxInfo, gli); |
| this->initBlendEqationSupport(ctxInfo); |
| this->initStencilFormats(ctxInfo); |
| |
| if (kGL_GrGLStandard == standard) { |
| // we could also look for GL_ATI_separate_stencil extension or |
| // GL_EXT_stencil_two_side but they use different function signatures |
| // than GL2.0+ (and than each other). |
| fTwoSidedStencilSupport = (ctxInfo.version() >= GR_GL_VER(2,0)); |
| // supported on GL 1.4 and higher or by extension |
| fStencilWrapOpsSupport = (ctxInfo.version() >= GR_GL_VER(1,4)) || |
| ctxInfo.hasExtension("GL_EXT_stencil_wrap"); |
| } else { |
| // ES 2 has two sided stencil and stencil wrap |
| fTwoSidedStencilSupport = true; |
| fStencilWrapOpsSupport = true; |
| } |
| |
| if (kGL_GrGLStandard == standard) { |
| fMapBufferFlags = kCanMap_MapFlag; // we require VBO support and the desktop VBO |
| // extension includes glMapBuffer. |
| if (version >= GR_GL_VER(3, 0) || ctxInfo.hasExtension("GL_ARB_map_buffer_range")) { |
| fMapBufferFlags |= kSubset_MapFlag; |
| fMapBufferType = kMapBufferRange_MapBufferType; |
| } else { |
| fMapBufferType = kMapBuffer_MapBufferType; |
| } |
| } else { |
| // Unextended GLES2 doesn't have any buffer mapping. |
| fMapBufferFlags = kNone_MapBufferType; |
| if (ctxInfo.hasExtension("GL_CHROMIUM_map_sub")) { |
| fMapBufferFlags = kCanMap_MapFlag | kSubset_MapFlag; |
| fMapBufferType = kChromium_MapBufferType; |
| } else if (version >= GR_GL_VER(3, 0) || ctxInfo.hasExtension("GL_EXT_map_buffer_range")) { |
| fMapBufferFlags = kCanMap_MapFlag | kSubset_MapFlag; |
| fMapBufferType = kMapBufferRange_MapBufferType; |
| } else if (ctxInfo.hasExtension("GL_OES_mapbuffer")) { |
| fMapBufferFlags = kCanMap_MapFlag; |
| fMapBufferType = kMapBuffer_MapBufferType; |
| } |
| } |
| |
| if (kGL_GrGLStandard == standard) { |
| if (version >= GR_GL_VER(3, 0) || ctxInfo.hasExtension("GL_ARB_pixel_buffer_object")) { |
| fTransferBufferType = kPBO_TransferBufferType; |
| } |
| } else { |
| if (version >= GR_GL_VER(3, 0) || ctxInfo.hasExtension("GL_NV_pixel_buffer_object")) { |
| fTransferBufferType = kPBO_TransferBufferType; |
| } else if (ctxInfo.hasExtension("GL_CHROMIUM_pixel_transfer_buffer_object")) { |
| fTransferBufferType = kChromium_TransferBufferType; |
| } |
| } |
| |
| // On many GPUs, map memory is very expensive, so we effectively disable it here by setting the |
| // threshold to the maximum unless the client gives us a hint that map memory is cheap. |
| if (fGeometryBufferMapThreshold < 0) { |
| // We think mapping on Chromium will be cheaper once we know ahead of time how much space |
| // we will use for all GrBatchs. Right now we might wind up mapping a large buffer and using |
| // a small subset. |
| #if 0 |
| fGeometryBufferMapThreshold = kChromium_GrGLDriver == ctxInfo.driver() ? 0 : SK_MaxS32; |
| #else |
| fGeometryBufferMapThreshold = SK_MaxS32; |
| #endif |
| } |
| |
| if (kGL_GrGLStandard == standard) { |
| SkASSERT(ctxInfo.version() >= GR_GL_VER(2,0) || |
| ctxInfo.hasExtension("GL_ARB_texture_non_power_of_two")); |
| fNPOTTextureTileSupport = true; |
| fMipMapSupport = true; |
| } else { |
| // Unextended ES2 supports NPOT textures with clamp_to_edge and non-mip filters only |
| // ES3 has no limitations. |
| fNPOTTextureTileSupport = ctxInfo.version() >= GR_GL_VER(3,0) || |
| ctxInfo.hasExtension("GL_OES_texture_npot"); |
| // ES2 supports MIP mapping for POT textures but our caps don't allow for limited MIP |
| // support. The OES extension or ES 3.0 allow for MIPS on NPOT textures. So, apparently, |
| // does the undocumented GL_IMG_texture_npot extension. This extension does not seem to |
| // to alllow arbitrary wrap modes, however. |
| fMipMapSupport = fNPOTTextureTileSupport || ctxInfo.hasExtension("GL_IMG_texture_npot"); |
| } |
| |
| // Using MIPs on this GPU seems to be a source of trouble. |
| if (kPowerVR54x_GrGLRenderer == ctxInfo.renderer()) { |
| fMipMapSupport = false; |
| } |
| |
| GR_GL_GetIntegerv(gli, GR_GL_MAX_TEXTURE_SIZE, &fMaxTextureSize); |
| GR_GL_GetIntegerv(gli, GR_GL_MAX_RENDERBUFFER_SIZE, &fMaxRenderTargetSize); |
| // Our render targets are always created with textures as the color |
| // attachment, hence this min: |
| fMaxRenderTargetSize = SkTMin(fMaxTextureSize, fMaxRenderTargetSize); |
| |
| fGpuTracingSupport = ctxInfo.hasExtension("GL_EXT_debug_marker"); |
| |
| // Disable scratch texture reuse on Mali and Adreno devices |
| fReuseScratchTextures = kARM_GrGLVendor != ctxInfo.vendor() && |
| kQualcomm_GrGLVendor != ctxInfo.vendor(); |
| |
| #if 0 |
| fReuseScratchBuffers = kARM_GrGLVendor != ctxInfo.vendor() && |
| kQualcomm_GrGLVendor != ctxInfo.vendor(); |
| #endif |
| |
| // initFSAASupport() must have been called before this point |
| if (GrGLCaps::kES_IMG_MsToTexture_MSFBOType == fMSFBOType) { |
| GR_GL_GetIntegerv(gli, GR_GL_MAX_SAMPLES_IMG, &fMaxColorSampleCount); |
| } else if (GrGLCaps::kNone_MSFBOType != fMSFBOType) { |
| GR_GL_GetIntegerv(gli, GR_GL_MAX_SAMPLES, &fMaxColorSampleCount); |
| } |
| fMaxStencilSampleCount = fMaxColorSampleCount; |
| |
| if (kPowerVR54x_GrGLRenderer == ctxInfo.renderer() || |
| kPowerVRRogue_GrGLRenderer == ctxInfo.renderer() || |
| kAdreno3xx_GrGLRenderer == ctxInfo.renderer()) { |
| fUseDrawInsteadOfClear = true; |
| } |
| |
| if (kAdreno4xx_GrGLRenderer == ctxInfo.renderer()) { |
| fUseDrawInsteadOfPartialRenderTargetWrite = true; |
| } |
| |
| #ifdef SK_BUILD_FOR_WIN |
| // On ANGLE deferring flushes can lead to GPU starvation |
| fPreferVRAMUseOverFlushes = !isANGLE; |
| #endif |
| |
| if (kChromium_GrGLDriver == ctxInfo.driver()) { |
| fMustClearUploadedBufferData = true; |
| } |
| |
| if (kGL_GrGLStandard == standard) { |
| // ARB allows mixed size FBO attachments, EXT does not. |
| if (ctxInfo.version() >= GR_GL_VER(3, 0) || |
| ctxInfo.hasExtension("GL_ARB_framebuffer_object")) { |
| fOversizedStencilSupport = true; |
| } else { |
| SkASSERT(ctxInfo.hasExtension("GL_EXT_framebuffer_object")); |
| } |
| } else { |
| // ES 3.0 supports mixed size FBO attachments, 2.0 does not. |
| fOversizedStencilSupport = ctxInfo.version() >= GR_GL_VER(3, 0); |
| } |
| |
| if (kGL_GrGLStandard == standard) { |
| // 3.1 has draw_instanced but not instanced_arrays, for the time being we only care about |
| // instanced arrays, but we could make this more granular if we wanted |
| fSupportsInstancedDraws = |
| version >= GR_GL_VER(3, 2) || |
| (ctxInfo.hasExtension("GL_ARB_draw_instanced") && |
| ctxInfo.hasExtension("GL_ARB_instanced_arrays")); |
| } else { |
| fSupportsInstancedDraws = |
| version >= GR_GL_VER(3, 0) || |
| (ctxInfo.hasExtension("GL_EXT_draw_instanced") && |
| ctxInfo.hasExtension("GL_EXT_instanced_arrays")); |
| } |
| |
| this->initShaderPrecisionTable(ctxInfo, gli, glslCaps); |
| |
| if (contextOptions.fUseShaderSwizzling) { |
| fTextureSwizzleSupport = false; |
| } |
| |
| // Requires fTextureRedSupport, fTextureSwizzleSupport, msaa support, ES compatibility have |
| // already been detected. |
| this->initConfigTable(ctxInfo, gli, glslCaps); |
| |
| this->applyOptionsOverrides(contextOptions); |
| glslCaps->applyOptionsOverrides(contextOptions); |
| } |
| |
| const char* get_glsl_version_decl_string(GrGLStandard standard, GrGLSLGeneration generation, |
| bool isCoreProfile) { |
| switch (generation) { |
| case k110_GrGLSLGeneration: |
| if (kGLES_GrGLStandard == standard) { |
| // ES2s shader language is based on version 1.20 but is version |
| // 1.00 of the ES language. |
| return "#version 100\n"; |
| } else { |
| SkASSERT(kGL_GrGLStandard == standard); |
| return "#version 110\n"; |
| } |
| case k130_GrGLSLGeneration: |
| SkASSERT(kGL_GrGLStandard == standard); |
| return "#version 130\n"; |
| case k140_GrGLSLGeneration: |
| SkASSERT(kGL_GrGLStandard == standard); |
| return "#version 140\n"; |
| case k150_GrGLSLGeneration: |
| SkASSERT(kGL_GrGLStandard == standard); |
| if (isCoreProfile) { |
| return "#version 150\n"; |
| } else { |
| return "#version 150 compatibility\n"; |
| } |
| case k330_GrGLSLGeneration: |
| if (kGLES_GrGLStandard == standard) { |
| return "#version 300 es\n"; |
| } else { |
| SkASSERT(kGL_GrGLStandard == standard); |
| if (isCoreProfile) { |
| return "#version 330\n"; |
| } else { |
| return "#version 330 compatibility\n"; |
| } |
| } |
| case k310es_GrGLSLGeneration: |
| SkASSERT(kGLES_GrGLStandard == standard); |
| return "#version 310 es\n"; |
| } |
| return "<no version>"; |
| } |
| |
| void GrGLCaps::initGLSL(const GrGLContextInfo& ctxInfo) { |
| GrGLStandard standard = ctxInfo.standard(); |
| GrGLVersion version = ctxInfo.version(); |
| |
| /************************************************************************** |
| * Caps specific to GrGLSLCaps |
| **************************************************************************/ |
| |
| GrGLSLCaps* glslCaps = static_cast<GrGLSLCaps*>(fShaderCaps.get()); |
| glslCaps->fGLSLGeneration = ctxInfo.glslGeneration(); |
| |
| if (kGLES_GrGLStandard == standard) { |
| if (ctxInfo.hasExtension("GL_EXT_shader_framebuffer_fetch")) { |
| glslCaps->fFBFetchNeedsCustomOutput = (version >= GR_GL_VER(3, 0)); |
| glslCaps->fFBFetchSupport = true; |
| glslCaps->fFBFetchColorName = "gl_LastFragData[0]"; |
| glslCaps->fFBFetchExtensionString = "GL_EXT_shader_framebuffer_fetch"; |
| } |
| else if (ctxInfo.hasExtension("GL_NV_shader_framebuffer_fetch")) { |
| // Actually, we haven't seen an ES3.0 device with this extension yet, so we don't know |
| glslCaps->fFBFetchNeedsCustomOutput = false; |
| glslCaps->fFBFetchSupport = true; |
| glslCaps->fFBFetchColorName = "gl_LastFragData[0]"; |
| glslCaps->fFBFetchExtensionString = "GL_NV_shader_framebuffer_fetch"; |
| } |
| else if (ctxInfo.hasExtension("GL_ARM_shader_framebuffer_fetch")) { |
| // The arm extension also requires an additional flag which we will set onResetContext |
| glslCaps->fFBFetchNeedsCustomOutput = false; |
| glslCaps->fFBFetchSupport = true; |
| glslCaps->fFBFetchColorName = "gl_LastFragColorARM"; |
| glslCaps->fFBFetchExtensionString = "GL_ARM_shader_framebuffer_fetch"; |
| } |
| glslCaps->fUsesPrecisionModifiers = true; |
| } |
| |
| glslCaps->fBindlessTextureSupport = ctxInfo.hasExtension("GL_NV_bindless_texture"); |
| |
| // Adreno GPUs have a tendency to drop tiles when there is a divide-by-zero in a shader |
| glslCaps->fDropsTileOnZeroDivide = kQualcomm_GrGLVendor == ctxInfo.vendor(); |
| |
| // On the NexusS and GalaxyNexus, the use of 'any' causes the compilation error "Calls to any |
| // function that may require a gradient calculation inside a conditional block may return |
| // undefined results". This appears to be an issue with the 'any' call since even the simple |
| // "result=black; if (any()) result=white;" code fails to compile. This issue comes into play |
| // from our GrTextureDomain processor. |
| glslCaps->fCanUseAnyFunctionInShader = kImagination_GrGLVendor != ctxInfo.vendor(); |
| |
| glslCaps->fVersionDeclString = get_glsl_version_decl_string(standard, glslCaps->fGLSLGeneration, |
| fIsCoreProfile); |
| |
| if (kGLES_GrGLStandard == standard && k110_GrGLSLGeneration == glslCaps->fGLSLGeneration) { |
| glslCaps->fShaderDerivativeExtensionString = "GL_OES_standard_derivatives"; |
| } |
| |
| // Frag Coords Convention support is not part of ES |
| // Known issue on at least some Intel platforms: |
| // http://code.google.com/p/skia/issues/detail?id=946 |
| if (kIntel_GrGLVendor != ctxInfo.vendor() && |
| kGLES_GrGLStandard != standard && |
| (ctxInfo.glslGeneration() >= k150_GrGLSLGeneration || |
| ctxInfo.hasExtension("GL_ARB_fragment_coord_conventions"))) { |
| glslCaps->fFragCoordConventionsExtensionString = "GL_ARB_fragment_coord_conventions"; |
| } |
| |
| if (kGLES_GrGLStandard == standard) { |
| glslCaps->fSecondaryOutputExtensionString = "GL_EXT_blend_func_extended"; |
| } |
| |
| if (fExternalTextureSupport) { |
| if (ctxInfo.glslGeneration() == k110_GrGLSLGeneration) { |
| glslCaps->fExternalTextureExtensionString = "GL_OES_EGL_image_external"; |
| } else { |
| glslCaps->fExternalTextureExtensionString = "GL_OES_EGL_image_external_essl3"; |
| } |
| } |
| |
| // The Tegra3 compiler will sometimes never return if we have min(abs(x), 1.0), so we must do |
| // the abs first in a separate expression. |
| if (kTegra3_GrGLRenderer == ctxInfo.renderer()) { |
| glslCaps->fCanUseMinAndAbsTogether = false; |
| } |
| |
| // On Intel GPU there is an issue where it reads the second argument to atan "- %s.x" as an int |
| // thus must us -1.0 * %s.x to work correctly |
| if (kIntel_GrGLVendor == ctxInfo.vendor()) { |
| glslCaps->fMustForceNegatedAtanParamToFloat = true; |
| } |
| } |
| |
| bool GrGLCaps::hasPathRenderingSupport(const GrGLContextInfo& ctxInfo, const GrGLInterface* gli) { |
| bool hasChromiumPathRendering = ctxInfo.hasExtension("GL_CHROMIUM_path_rendering"); |
| |
| if (!(ctxInfo.hasExtension("GL_NV_path_rendering") || hasChromiumPathRendering)) { |
| return false; |
| } |
| |
| if (kGL_GrGLStandard == ctxInfo.standard()) { |
| if (ctxInfo.version() < GR_GL_VER(4, 3) && |
| !ctxInfo.hasExtension("GL_ARB_program_interface_query")) { |
| return false; |
| } |
| } else { |
| if (!hasChromiumPathRendering && |
| ctxInfo.version() < GR_GL_VER(3, 1)) { |
| return false; |
| } |
| } |
| // We only support v1.3+ of GL_NV_path_rendering which allows us to |
| // set individual fragment inputs with ProgramPathFragmentInputGen. The API |
| // additions are detected by checking the existence of the function. |
| // We also use *Then* functions that not all drivers might have. Check |
| // them for consistency. |
| if (nullptr == gli->fFunctions.fStencilThenCoverFillPath || |
| nullptr == gli->fFunctions.fStencilThenCoverStrokePath || |
| nullptr == gli->fFunctions.fStencilThenCoverFillPathInstanced || |
| nullptr == gli->fFunctions.fStencilThenCoverStrokePathInstanced || |
| nullptr == gli->fFunctions.fProgramPathFragmentInputGen) { |
| return false; |
| } |
| return true; |
| } |
| |
| bool GrGLCaps::readPixelsSupported(GrPixelConfig rtConfig, |
| GrPixelConfig readConfig, |
| std::function<void (GrGLenum, GrGLint*)> getIntegerv, |
| std::function<bool ()> bindRenderTarget) const { |
| SkASSERT(this->isConfigRenderable(rtConfig, false)); |
| |
| GrGLenum readFormat; |
| GrGLenum readType; |
| if (!this->getReadPixelsFormat(rtConfig, readConfig, &readFormat, &readType)) { |
| return false; |
| } |
| |
| if (kGL_GrGLStandard == fStandard) { |
| // All of our renderable configs can be converted to each other by glReadPixels in OpenGL. |
| return true; |
| } |
| |
| // See Section 16.1.2 in the ES 3.2 specification. |
| |
| if (kNormalizedFixedPoint_FormatType == fConfigTable[rtConfig].fFormatType) { |
| if (GR_GL_RGBA == readFormat && GR_GL_UNSIGNED_BYTE == readType) { |
| return true; |
| } |
| } else { |
| SkASSERT(kFloat_FormatType == fConfigTable[rtConfig].fFormatType); |
| if (GR_GL_RGBA == readFormat && GR_GL_FLOAT == readType) { |
| return true; |
| } |
| } |
| |
| if (0 == fConfigTable[rtConfig].fSecondReadPixelsFormat.fFormat) { |
| ReadPixelsFormat* rpFormat = |
| const_cast<ReadPixelsFormat*>(&fConfigTable[rtConfig].fSecondReadPixelsFormat); |
| GrGLint format = 0, type = 0; |
| if (!bindRenderTarget()) { |
| return false; |
| } |
| getIntegerv(GR_GL_IMPLEMENTATION_COLOR_READ_FORMAT, &format); |
| getIntegerv(GR_GL_IMPLEMENTATION_COLOR_READ_TYPE, &type); |
| rpFormat->fFormat = format; |
| rpFormat->fType = type; |
| } |
| |
| return fConfigTable[rtConfig].fSecondReadPixelsFormat.fFormat == readFormat && |
| fConfigTable[rtConfig].fSecondReadPixelsFormat.fType == readType; |
| } |
| |
| void GrGLCaps::initFSAASupport(const GrGLContextInfo& ctxInfo, const GrGLInterface* gli) { |
| |
| fMSFBOType = kNone_MSFBOType; |
| if (kGL_GrGLStandard != ctxInfo.standard()) { |
| // We prefer the EXT/IMG extension over ES3 MSAA because we've observed |
| // ES3 driver bugs on at least one device with a tiled GPU (N10). |
| if (ctxInfo.hasExtension("GL_EXT_multisampled_render_to_texture")) { |
| fMSFBOType = kES_EXT_MsToTexture_MSFBOType; |
| } else if (ctxInfo.hasExtension("GL_IMG_multisampled_render_to_texture")) { |
| fMSFBOType = kES_IMG_MsToTexture_MSFBOType; |
| } else if (fUsesMixedSamples) { |
| fMSFBOType = kMixedSamples_MSFBOType; |
| } else if (ctxInfo.version() >= GR_GL_VER(3,0)) { |
| fMSFBOType = GrGLCaps::kES_3_0_MSFBOType; |
| } else if (ctxInfo.hasExtension("GL_CHROMIUM_framebuffer_multisample")) { |
| // chrome's extension is equivalent to the EXT msaa |
| // and fbo_blit extensions. |
| fMSFBOType = kDesktop_EXT_MSFBOType; |
| } else if (ctxInfo.hasExtension("GL_APPLE_framebuffer_multisample")) { |
| fMSFBOType = kES_Apple_MSFBOType; |
| } |
| } else { |
| if (fUsesMixedSamples) { |
| fMSFBOType = kMixedSamples_MSFBOType; |
| } else if ((ctxInfo.version() >= GR_GL_VER(3,0)) || |
| ctxInfo.hasExtension("GL_ARB_framebuffer_object")) { |
| fMSFBOType = GrGLCaps::kDesktop_ARB_MSFBOType; |
| } else if (ctxInfo.hasExtension("GL_EXT_framebuffer_multisample") && |
| ctxInfo.hasExtension("GL_EXT_framebuffer_blit")) { |
| fMSFBOType = GrGLCaps::kDesktop_EXT_MSFBOType; |
| } |
| } |
| } |
| |
| void GrGLCaps::initBlendEqationSupport(const GrGLContextInfo& ctxInfo) { |
| GrGLSLCaps* glslCaps = static_cast<GrGLSLCaps*>(fShaderCaps.get()); |
| |
| // Disabling advanced blend on various platforms with major known issues. We also block Chrome |
| // for now until its own blacklists can be updated. |
| if (kAdreno4xx_GrGLRenderer == ctxInfo.renderer() || |
| kIntel_GrGLDriver == ctxInfo.driver() || |
| kChromium_GrGLDriver == ctxInfo.driver()) { |
| return; |
| } |
| |
| if (ctxInfo.hasExtension("GL_NV_blend_equation_advanced_coherent")) { |
| fBlendEquationSupport = kAdvancedCoherent_BlendEquationSupport; |
| glslCaps->fAdvBlendEqInteraction = GrGLSLCaps::kAutomatic_AdvBlendEqInteraction; |
| } else if (ctxInfo.hasExtension("GL_KHR_blend_equation_advanced_coherent")) { |
| fBlendEquationSupport = kAdvancedCoherent_BlendEquationSupport; |
| glslCaps->fAdvBlendEqInteraction = GrGLSLCaps::kGeneralEnable_AdvBlendEqInteraction; |
| } else if (kNVIDIA_GrGLDriver == ctxInfo.driver() && |
| ctxInfo.driverVersion() < GR_GL_DRIVER_VER(337,00)) { |
| // Non-coherent advanced blend has an issue on NVIDIA pre 337.00. |
| return; |
| } else if (ctxInfo.hasExtension("GL_NV_blend_equation_advanced")) { |
| fBlendEquationSupport = kAdvanced_BlendEquationSupport; |
| glslCaps->fAdvBlendEqInteraction = GrGLSLCaps::kAutomatic_AdvBlendEqInteraction; |
| } else if (ctxInfo.hasExtension("GL_KHR_blend_equation_advanced")) { |
| fBlendEquationSupport = kAdvanced_BlendEquationSupport; |
| glslCaps->fAdvBlendEqInteraction = GrGLSLCaps::kGeneralEnable_AdvBlendEqInteraction; |
| // TODO: Use kSpecificEnables_AdvBlendEqInteraction if "blend_support_all_equations" is |
| // slow on a particular platform. |
| } else { |
| return; // No advanced blend support. |
| } |
| |
| SkASSERT(this->advancedBlendEquationSupport()); |
| |
| if (kNVIDIA_GrGLDriver == ctxInfo.driver()) { |
| // Blacklist color-dodge and color-burn on NVIDIA until the fix is released. |
| fAdvBlendEqBlacklist |= (1 << kColorDodge_GrBlendEquation) | |
| (1 << kColorBurn_GrBlendEquation); |
| } |
| if (kARM_GrGLVendor == ctxInfo.vendor()) { |
| // Blacklist color-burn on ARM until the fix is released. |
| fAdvBlendEqBlacklist |= (1 << kColorBurn_GrBlendEquation); |
| } |
| } |
| |
| namespace { |
| const GrGLuint kUnknownBitCount = GrGLStencilAttachment::kUnknownBitCount; |
| } |
| |
| void GrGLCaps::initStencilFormats(const GrGLContextInfo& ctxInfo) { |
| |
| // Build up list of legal stencil formats (though perhaps not supported on |
| // the particular gpu/driver) from most preferred to least. |
| |
| // these consts are in order of most preferred to least preferred |
| // we don't bother with GL_STENCIL_INDEX1 or GL_DEPTH32F_STENCIL8 |
| |
| static const StencilFormat |
| // internal Format stencil bits total bits packed? |
| gS8 = {GR_GL_STENCIL_INDEX8, 8, 8, false}, |
| gS16 = {GR_GL_STENCIL_INDEX16, 16, 16, false}, |
| gD24S8 = {GR_GL_DEPTH24_STENCIL8, 8, 32, true }, |
| gS4 = {GR_GL_STENCIL_INDEX4, 4, 4, false}, |
| // gS = {GR_GL_STENCIL_INDEX, kUnknownBitCount, kUnknownBitCount, false}, |
| gDS = {GR_GL_DEPTH_STENCIL, kUnknownBitCount, kUnknownBitCount, true }; |
| |
| if (kGL_GrGLStandard == ctxInfo.standard()) { |
| bool supportsPackedDS = |
| ctxInfo.version() >= GR_GL_VER(3,0) || |
| ctxInfo.hasExtension("GL_EXT_packed_depth_stencil") || |
| ctxInfo.hasExtension("GL_ARB_framebuffer_object"); |
| |
| // S1 thru S16 formats are in GL 3.0+, EXT_FBO, and ARB_FBO since we |
| // require FBO support we can expect these are legal formats and don't |
| // check. These also all support the unsized GL_STENCIL_INDEX. |
| fStencilFormats.push_back() = gS8; |
| fStencilFormats.push_back() = gS16; |
| if (supportsPackedDS) { |
| fStencilFormats.push_back() = gD24S8; |
| } |
| fStencilFormats.push_back() = gS4; |
| if (supportsPackedDS) { |
| fStencilFormats.push_back() = gDS; |
| } |
| } else { |
| // ES2 has STENCIL_INDEX8 without extensions but requires extensions |
| // for other formats. |
| // ES doesn't support using the unsized format. |
| |
| fStencilFormats.push_back() = gS8; |
| //fStencilFormats.push_back() = gS16; |
| if (ctxInfo.version() >= GR_GL_VER(3,0) || |
| ctxInfo.hasExtension("GL_OES_packed_depth_stencil")) { |
| fStencilFormats.push_back() = gD24S8; |
| } |
| if (ctxInfo.hasExtension("GL_OES_stencil4")) { |
| fStencilFormats.push_back() = gS4; |
| } |
| } |
| } |
| |
| SkString GrGLCaps::dump() const { |
| |
| SkString r = INHERITED::dump(); |
| |
| r.appendf("--- GL-Specific ---\n"); |
| for (int i = 0; i < fStencilFormats.count(); ++i) { |
| r.appendf("Stencil Format %d, stencil bits: %02d, total bits: %02d\n", |
| i, |
| fStencilFormats[i].fStencilBits, |
| fStencilFormats[i].fTotalBits); |
| } |
| |
| static const char* kMSFBOExtStr[] = { |
| "None", |
| "ARB", |
| "EXT", |
| "ES 3.0", |
| "Apple", |
| "IMG MS To Texture", |
| "EXT MS To Texture", |
| "MixedSamples", |
| }; |
| GR_STATIC_ASSERT(0 == kNone_MSFBOType); |
| GR_STATIC_ASSERT(1 == kDesktop_ARB_MSFBOType); |
| GR_STATIC_ASSERT(2 == kDesktop_EXT_MSFBOType); |
| GR_STATIC_ASSERT(3 == kES_3_0_MSFBOType); |
| GR_STATIC_ASSERT(4 == kES_Apple_MSFBOType); |
| GR_STATIC_ASSERT(5 == kES_IMG_MsToTexture_MSFBOType); |
| GR_STATIC_ASSERT(6 == kES_EXT_MsToTexture_MSFBOType); |
| GR_STATIC_ASSERT(7 == kMixedSamples_MSFBOType); |
| GR_STATIC_ASSERT(SK_ARRAY_COUNT(kMSFBOExtStr) == kLast_MSFBOType + 1); |
| |
| static const char* kInvalidateFBTypeStr[] = { |
| "None", |
| "Discard", |
| "Invalidate", |
| }; |
| GR_STATIC_ASSERT(0 == kNone_InvalidateFBType); |
| GR_STATIC_ASSERT(1 == kDiscard_InvalidateFBType); |
| GR_STATIC_ASSERT(2 == kInvalidate_InvalidateFBType); |
| GR_STATIC_ASSERT(SK_ARRAY_COUNT(kInvalidateFBTypeStr) == kLast_InvalidateFBType + 1); |
| |
| static const char* kMapBufferTypeStr[] = { |
| "None", |
| "MapBuffer", |
| "MapBufferRange", |
| "Chromium", |
| }; |
| GR_STATIC_ASSERT(0 == kNone_MapBufferType); |
| GR_STATIC_ASSERT(1 == kMapBuffer_MapBufferType); |
| GR_STATIC_ASSERT(2 == kMapBufferRange_MapBufferType); |
| GR_STATIC_ASSERT(3 == kChromium_MapBufferType); |
| GR_STATIC_ASSERT(SK_ARRAY_COUNT(kMapBufferTypeStr) == kLast_MapBufferType + 1); |
| |
| r.appendf("Core Profile: %s\n", (fIsCoreProfile ? "YES" : "NO")); |
| r.appendf("MSAA Type: %s\n", kMSFBOExtStr[fMSFBOType]); |
| r.appendf("Invalidate FB Type: %s\n", kInvalidateFBTypeStr[fInvalidateFBType]); |
| r.appendf("Map Buffer Type: %s\n", kMapBufferTypeStr[fMapBufferType]); |
| r.appendf("Max FS Uniform Vectors: %d\n", fMaxFragmentUniformVectors); |
| r.appendf("Max FS Texture Units: %d\n", fMaxFragmentTextureUnits); |
| r.appendf("Max Vertex Attributes: %d\n", fMaxVertexAttributes); |
| r.appendf("Unpack Row length support: %s\n", (fUnpackRowLengthSupport ? "YES": "NO")); |
| r.appendf("Unpack Flip Y support: %s\n", (fUnpackFlipYSupport ? "YES": "NO")); |
| r.appendf("Pack Row length support: %s\n", (fPackRowLengthSupport ? "YES": "NO")); |
| r.appendf("Pack Flip Y support: %s\n", (fPackFlipYSupport ? "YES": "NO")); |
| |
| r.appendf("Texture Usage support: %s\n", (fTextureUsageSupport ? "YES": "NO")); |
| r.appendf("Texture Storage support: %s\n", (fTexStorageSupport ? "YES": "NO")); |
| r.appendf("GL_R support: %s\n", (fTextureRedSupport ? "YES": "NO")); |
| r.appendf("GL_ARB_imaging support: %s\n", (fImagingSupport ? "YES": "NO")); |
| r.appendf("Vertex array object support: %s\n", (fVertexArrayObjectSupport ? "YES": "NO")); |
| r.appendf("Direct state access support: %s\n", (fDirectStateAccessSupport ? "YES": "NO")); |
| r.appendf("Debug support: %s\n", (fDebugSupport ? "YES": "NO")); |
| r.appendf("Multisample disable support: %s\n", (fMultisampleDisableSupport ? "YES" : "NO")); |
| r.appendf("Use non-VBO for dynamic data: %s\n", |
| (fUseNonVBOVertexAndIndexDynamicData ? "YES" : "NO")); |
| r.appendf("SRGB write contol: %s\n", (fSRGBWriteControl ? "YES" : "NO")); |
| r.appendf("RGBA 8888 pixel ops are slow: %s\n", (fRGBA8888PixelsOpsAreSlow ? "YES" : "NO")); |
| r.appendf("Partial FBO read is slow: %s\n", (fPartialFBOReadIsSlow ? "YES" : "NO")); |
| r.appendf("Bind uniform location support: %s\n", (fBindUniformLocationSupport ? "YES" : "NO")); |
| r.appendf("External texture support: %s\n", (fExternalTextureSupport ? "YES" : "NO")); |
| r.appendf("Rectangle texture support: %s\n", (fRectangleTextureSupport? "YES" : "NO")); |
| r.appendf("Texture swizzle support: %s\n", (fTextureSwizzleSupport ? "YES" : "NO")); |
| |
| r.append("Configs\n-------\n"); |
| for (int i = 0; i < kGrPixelConfigCnt; ++i) { |
| r.appendf(" cfg: %d flags: 0x%04x, b_internal: 0x%08x s_internal: 0x%08x, e_format: " |
| "0x%08x, e_format_teximage: 0x%08x, e_type: 0x%08x, i_for_teximage: 0x%08x, " |
| "i_for_renderbuffer: 0x%08x\n", |
| i, |
| fConfigTable[i].fFlags, |
| fConfigTable[i].fFormats.fBaseInternalFormat, |
| fConfigTable[i].fFormats.fSizedInternalFormat, |
| fConfigTable[i].fFormats.fExternalFormat[kOther_ExternalFormatUsage], |
| fConfigTable[i].fFormats.fExternalFormat[kTexImage_ExternalFormatUsage], |
| fConfigTable[i].fFormats.fExternalType, |
| fConfigTable[i].fFormats.fInternalFormatTexImage, |
| fConfigTable[i].fFormats.fInternalFormatRenderbuffer); |
| } |
| |
| return r; |
| } |
| |
| static GrGLenum precision_to_gl_float_type(GrSLPrecision p) { |
| switch (p) { |
| case kLow_GrSLPrecision: |
| return GR_GL_LOW_FLOAT; |
| case kMedium_GrSLPrecision: |
| return GR_GL_MEDIUM_FLOAT; |
| case kHigh_GrSLPrecision: |
| return GR_GL_HIGH_FLOAT; |
| } |
| SkFAIL("Unknown precision."); |
| return -1; |
| } |
| |
| static GrGLenum shader_type_to_gl_shader(GrShaderType type) { |
| switch (type) { |
| case kVertex_GrShaderType: |
| return GR_GL_VERTEX_SHADER; |
| case kGeometry_GrShaderType: |
| return GR_GL_GEOMETRY_SHADER; |
| case kFragment_GrShaderType: |
| return GR_GL_FRAGMENT_SHADER; |
| } |
| SkFAIL("Unknown shader type."); |
| return -1; |
| } |
| |
| void GrGLCaps::initShaderPrecisionTable(const GrGLContextInfo& ctxInfo, |
| const GrGLInterface* intf, |
| GrGLSLCaps* glslCaps) { |
| if (kGLES_GrGLStandard == ctxInfo.standard() || ctxInfo.version() >= GR_GL_VER(4, 1) || |
| ctxInfo.hasExtension("GL_ARB_ES2_compatibility")) { |
| for (int s = 0; s < kGrShaderTypeCount; ++s) { |
| if (kGeometry_GrShaderType != s) { |
| GrShaderType shaderType = static_cast<GrShaderType>(s); |
| GrGLenum glShader = shader_type_to_gl_shader(shaderType); |
| GrShaderCaps::PrecisionInfo* first = nullptr; |
| glslCaps->fShaderPrecisionVaries = false; |
| for (int p = 0; p < kGrSLPrecisionCount; ++p) { |
| GrSLPrecision precision = static_cast<GrSLPrecision>(p); |
| GrGLenum glPrecision = precision_to_gl_float_type(precision); |
| GrGLint range[2]; |
| GrGLint bits; |
| GR_GL_GetShaderPrecisionFormat(intf, glShader, glPrecision, range, &bits); |
| if (bits) { |
| glslCaps->fFloatPrecisions[s][p].fLogRangeLow = range[0]; |
| glslCaps->fFloatPrecisions[s][p].fLogRangeHigh = range[1]; |
| glslCaps->fFloatPrecisions[s][p].fBits = bits; |
| if (!first) { |
| first = &glslCaps->fFloatPrecisions[s][p]; |
| } |
| else if (!glslCaps->fShaderPrecisionVaries) { |
| glslCaps->fShaderPrecisionVaries = |
| (*first != glslCaps->fFloatPrecisions[s][p]); |
| } |
| } |
| } |
| } |
| } |
| } |
| else { |
| // We're on a desktop GL that doesn't have precision info. Assume they're all 32bit float. |
| glslCaps->fShaderPrecisionVaries = false; |
| for (int s = 0; s < kGrShaderTypeCount; ++s) { |
| if (kGeometry_GrShaderType != s) { |
| for (int p = 0; p < kGrSLPrecisionCount; ++p) { |
| glslCaps->fFloatPrecisions[s][p].fLogRangeLow = 127; |
| glslCaps->fFloatPrecisions[s][p].fLogRangeHigh = 127; |
| glslCaps->fFloatPrecisions[s][p].fBits = 23; |
| } |
| } |
| } |
| } |
| // GetShaderPrecisionFormat doesn't accept GL_GEOMETRY_SHADER as a shader type. Assume they're |
| // the same as the vertex shader. Only fragment shaders were ever allowed to omit support for |
| // highp. GS was added after GetShaderPrecisionFormat was added to the list of features that |
| // are recommended against. |
| if (glslCaps->fGeometryShaderSupport) { |
| for (int p = 0; p < kGrSLPrecisionCount; ++p) { |
| glslCaps->fFloatPrecisions[kGeometry_GrShaderType][p] = |
| glslCaps->fFloatPrecisions[kVertex_GrShaderType][p]; |
| } |
| } |
| } |
| |
| bool GrGLCaps::bgraIsInternalFormat() const { |
| return fConfigTable[kBGRA_8888_GrPixelConfig].fFormats.fBaseInternalFormat == GR_GL_BGRA; |
| } |
| |
| bool GrGLCaps::getTexImageFormats(GrPixelConfig surfaceConfig, GrPixelConfig externalConfig, |
| GrGLenum* internalFormat, GrGLenum* externalFormat, |
| GrGLenum* externalType) const { |
| if (!this->getExternalFormat(surfaceConfig, externalConfig, kTexImage_ExternalFormatUsage, |
| externalFormat, externalType)) { |
| return false; |
| } |
| *internalFormat = fConfigTable[surfaceConfig].fFormats.fInternalFormatTexImage; |
| return true; |
| } |
| |
| bool GrGLCaps::getCompressedTexImageFormats(GrPixelConfig surfaceConfig, |
| GrGLenum* internalFormat) const { |
| if (!GrPixelConfigIsCompressed(surfaceConfig)) { |
| return false; |
| } |
| *internalFormat = fConfigTable[surfaceConfig].fFormats.fInternalFormatTexImage; |
| return true; |
| } |
| |
| bool GrGLCaps::getReadPixelsFormat(GrPixelConfig surfaceConfig, GrPixelConfig externalConfig, |
| GrGLenum* externalFormat, GrGLenum* externalType) const { |
| if (!this->getExternalFormat(surfaceConfig, externalConfig, kOther_ExternalFormatUsage, |
| externalFormat, externalType)) { |
| return false; |
| } |
| return true; |
| } |
| |
| bool GrGLCaps::getRenderbufferFormat(GrPixelConfig config, GrGLenum* internalFormat) const { |
| if (GrPixelConfigIsCompressed(config)) { |
| return false; |
| } |
| *internalFormat = fConfigTable[config].fFormats.fInternalFormatRenderbuffer; |
| return true; |
| } |
| |
| bool GrGLCaps::getExternalFormat(GrPixelConfig surfaceConfig, GrPixelConfig memoryConfig, |
| ExternalFormatUsage usage, GrGLenum* externalFormat, |
| GrGLenum* externalType) const { |
| SkASSERT(externalFormat && externalType); |
| if (GrPixelConfigIsCompressed(memoryConfig) || GrPixelConfigIsCompressed(memoryConfig)) { |
| return false; |
| } |
| |
| bool surfaceIsAlphaOnly = GrPixelConfigIsAlphaOnly(surfaceConfig); |
| bool memoryIsAlphaOnly = GrPixelConfigIsAlphaOnly(memoryConfig); |
| |
| // We don't currently support moving RGBA data into and out of ALPHA surfaces. It could be |
| // made to work in many cases using glPixelStore and what not but is not needed currently. |
| if (surfaceIsAlphaOnly && !memoryIsAlphaOnly) { |
| return false; |
| } |
| |
| *externalFormat = fConfigTable[memoryConfig].fFormats.fExternalFormat[usage]; |
| *externalType = fConfigTable[memoryConfig].fFormats.fExternalType; |
| |
| return true; |
| } |
| |
| void GrGLCaps::initConfigTable(const GrGLContextInfo& ctxInfo, const GrGLInterface* gli, |
| GrGLSLCaps* glslCaps) { |
| /* |
| Comments on renderability of configs on various GL versions. |
| OpenGL < 3.0: |
| no built in support for render targets. |
| GL_EXT_framebuffer_object adds possible support for any sized format with base internal |
| format RGB, RGBA and NV float formats we don't use. |
| This is the following: |
| R3_G3_B2, RGB4, RGB5, RGB8, RGB10, RGB12, RGB16, RGBA2, RGBA4, RGB5_A1, RGBA8 |
| RGB10_A2, RGBA12,RGBA16 |
| Though, it is hard to believe the more obscure formats such as RGBA12 would work |
| since they aren't required by later standards and the driver can simply return |
| FRAMEBUFFER_UNSUPPORTED for anything it doesn't allow. |
| GL_ARB_framebuffer_object adds everything added by the EXT extension and additionally |
| any sized internal format with a base internal format of ALPHA, LUMINANCE, |
| LUMINANCE_ALPHA, INTENSITY, RED, and RG. |
| This adds a lot of additional renderable sized formats, including ALPHA8. |
| The GL_ARB_texture_rg brings in the RED and RG formats (8, 8I, 8UI, 16, 16I, 16UI, |
| 16F, 32I, 32UI, and 32F variants). |
| Again, the driver has an escape hatch via FRAMEBUFFER_UNSUPPORTED. |
| |
| For both the above extensions we limit ourselves to those that are also required by |
| OpenGL 3.0. |
| |
| OpenGL 3.0: |
| Any format with base internal format ALPHA, RED, RG, RGB or RGBA is "color-renderable" |
| but are not required to be supported as renderable textures/renderbuffer. |
| Required renderable color formats: |
| - RGBA32F, RGBA32I, RGBA32UI, RGBA16, RGBA16F, RGBA16I, |
| RGBA16UI, RGBA8, RGBA8I, RGBA8UI, SRGB8_ALPHA8, and |
| RGB10_A2. |
| - R11F_G11F_B10F. |
| - RG32F, RG32I, RG32UI, RG16, RG16F, RG16I, RG16UI, RG8, RG8I, |
| and RG8UI. |
| - R32F, R32I, R32UI, R16F, R16I, R16UI, R16, R8, R8I, and R8UI. |
| - ALPHA8 |
| |
| OpenGL 3.1, 3.2, 3.3 |
| Same as 3.0 except ALPHA8 requires GL_ARB_compatibility/compatibility profile. |
| OpengGL 3.3, 4.0, 4.1 |
| Adds RGB10_A2UI. |
| OpengGL 4.2 |
| Adds |
| - RGB5_A1, RGBA4 |
| - RGB565 |
| OpenGL 4.4 |
| Does away with the separate list and adds a column to the sized internal color format |
| table. However, no new formats become required color renderable. |
| |
| ES 2.0 |
| color renderable: RGBA4, RGB5_A1, RGB565 |
| GL_EXT_texture_rg adds support for R8, RG5 as a color render target |
| GL_OES_rgb8_rgba8 adds support for RGB8 and RGBA8 |
| GL_ARM_rgba8 adds support for RGBA8 (but not RGB8) |
| GL_EXT_texture_format_BGRA8888 does not add renderbuffer support |
| GL_CHROMIUM_renderbuffer_format_BGRA8888 adds BGRA8 as color-renderable |
| GL_APPLE_texture_format_BGRA8888 does not add renderbuffer support |
| |
| ES 3.0 |
| - RGBA32I, RGBA32UI, RGBA16I, RGBA16UI, RGBA8, RGBA8I, |
| RGBA8UI, SRGB8_ALPHA8, RGB10_A2, RGB10_A2UI, RGBA4, and |
| RGB5_A1. |
| - RGB8 and RGB565. |
| - RG32I, RG32UI, RG16I, RG16UI, RG8, RG8I, and RG8UI. |
| - R32I, R32UI, R16I, R16UI, R8, R8I, and R8UI |
| ES 3.1 |
| Adds RGB10_A2, RGB10_A2UI, |
| ES 3.2 |
| Adds R16F, RG16F, RGBA16F, R32F, RG32F, RGBA32F, R11F_G11F_B10F. |
| */ |
| uint32_t allRenderFlags = ConfigInfo::kRenderable_Flag; |
| if (kNone_MSFBOType != fMSFBOType) { |
| allRenderFlags |= ConfigInfo::kRenderableWithMSAA_Flag; |
| } |
| |
| GrGLStandard standard = ctxInfo.standard(); |
| GrGLVersion version = ctxInfo.version(); |
| |
| fConfigTable[kUnknown_GrPixelConfig].fFormats.fBaseInternalFormat = 0; |
| fConfigTable[kUnknown_GrPixelConfig].fFormats.fSizedInternalFormat = 0; |
| fConfigTable[kUnknown_GrPixelConfig].fFormats.fExternalFormat[kOther_ExternalFormatUsage] = 0; |
| fConfigTable[kUnknown_GrPixelConfig].fFormats.fExternalType = 0; |
| fConfigTable[kUnknown_GrPixelConfig].fFormatType = kNormalizedFixedPoint_FormatType; |
| fConfigTable[kUnknown_GrPixelConfig].fSwizzle = GrSwizzle::RGBA(); |
| |
| fConfigTable[kRGBA_8888_GrPixelConfig].fFormats.fBaseInternalFormat = GR_GL_RGBA; |
| fConfigTable[kRGBA_8888_GrPixelConfig].fFormats.fSizedInternalFormat = GR_GL_RGBA8; |
| fConfigTable[kRGBA_8888_GrPixelConfig].fFormats.fExternalFormat[kOther_ExternalFormatUsage] = |
| GR_GL_RGBA; |
| fConfigTable[kRGBA_8888_GrPixelConfig].fFormats.fExternalType = GR_GL_UNSIGNED_BYTE; |
| fConfigTable[kRGBA_8888_GrPixelConfig].fFormatType = kNormalizedFixedPoint_FormatType; |
| fConfigTable[kRGBA_8888_GrPixelConfig].fFlags = ConfigInfo::kTextureable_Flag; |
| if (kGL_GrGLStandard == standard) { |
| // We require some form of FBO support and all GLs with FBO support can render to RGBA8 |
| fConfigTable[kRGBA_8888_GrPixelConfig].fFlags |= allRenderFlags; |
| } else { |
| if (version >= GR_GL_VER(3,0) || ctxInfo.hasExtension("GL_OES_rgb8_rgba8") || |
| ctxInfo.hasExtension("GL_ARM_rgba8")) { |
| fConfigTable[kRGBA_8888_GrPixelConfig].fFlags |= allRenderFlags; |
| } |
| } |
| fConfigTable[kRGBA_8888_GrPixelConfig].fSwizzle = GrSwizzle::RGBA(); |
| |
| fConfigTable[kBGRA_8888_GrPixelConfig].fFormats.fExternalFormat[kOther_ExternalFormatUsage] = |
| GR_GL_BGRA; |
| fConfigTable[kBGRA_8888_GrPixelConfig].fFormats.fExternalType = GR_GL_UNSIGNED_BYTE; |
| fConfigTable[kBGRA_8888_GrPixelConfig].fFormatType = kNormalizedFixedPoint_FormatType; |
| if (kGL_GrGLStandard == standard) { |
| fConfigTable[kBGRA_8888_GrPixelConfig].fFormats.fBaseInternalFormat = GR_GL_RGBA; |
| fConfigTable[kBGRA_8888_GrPixelConfig].fFormats.fSizedInternalFormat = GR_GL_RGBA8; |
| if (version >= GR_GL_VER(1, 2) || ctxInfo.hasExtension("GL_EXT_bgra")) { |
| // Since the internal format is RGBA8, it is also renderable. |
| fConfigTable[kBGRA_8888_GrPixelConfig].fFlags = ConfigInfo::kTextureable_Flag | |
| allRenderFlags; |
| } |
| } else { |
| fConfigTable[kBGRA_8888_GrPixelConfig].fFormats.fBaseInternalFormat = GR_GL_BGRA; |
| fConfigTable[kBGRA_8888_GrPixelConfig].fFormats.fSizedInternalFormat = GR_GL_BGRA8; |
| if (ctxInfo.hasExtension("GL_APPLE_texture_format_BGRA8888")) { |
| // The APPLE extension doesn't make this renderable. |
| fConfigTable[kBGRA_8888_GrPixelConfig].fFlags = ConfigInfo::kTextureable_Flag; |
| if (version < GR_GL_VER(3,0) && !ctxInfo.hasExtension("GL_EXT_texture_storage")) { |
| // On ES2 the internal format of a BGRA texture is RGBA with the APPLE extension. |
| // Though, that seems to not be the case if the texture storage extension is |
| // present. The specs don't exactly make that clear. |
| fConfigTable[kBGRA_8888_GrPixelConfig].fFormats.fBaseInternalFormat = GR_GL_RGBA; |
| fConfigTable[kBGRA_8888_GrPixelConfig].fFormats.fSizedInternalFormat = GR_GL_RGBA8; |
| } |
| } else if (ctxInfo.hasExtension("GL_EXT_texture_format_BGRA8888")) { |
| fConfigTable[kBGRA_8888_GrPixelConfig].fFlags = ConfigInfo::kTextureable_Flag | |
| ConfigInfo::kRenderable_Flag; |
| if (ctxInfo.hasExtension("GL_CHROMIUM_renderbuffer_format_BGRA8888") && |
| (this->usesMSAARenderBuffers() || this->fMSFBOType == kMixedSamples_MSFBOType)) { |
| fConfigTable[kBGRA_8888_GrPixelConfig].fFlags |= |
| ConfigInfo::kRenderableWithMSAA_Flag; |
| } |
| } |
| } |
| fConfigTable[kBGRA_8888_GrPixelConfig].fSwizzle = GrSwizzle::RGBA(); |
| |
| // We only enable srgb support if both textures and FBOs support srgb. |
| bool srgbSupport = false; |
| if (kGL_GrGLStandard == standard) { |
| if (ctxInfo.version() >= GR_GL_VER(3,0)) { |
| srgbSupport = true; |
| } else if (ctxInfo.hasExtension("GL_EXT_texture_sRGB")) { |
| if (ctxInfo.hasExtension("GL_ARB_framebuffer_sRGB") || |
| ctxInfo.hasExtension("GL_EXT_framebuffer_sRGB")) { |
| srgbSupport = true; |
| } |
| } |
| // All the above srgb extensions support toggling srgb writes |
| fSRGBWriteControl = srgbSupport; |
| } else { |
| // See https://bug.skia.org/4148 for PowerVR issue. |
| srgbSupport = kPowerVRRogue_GrGLRenderer != ctxInfo.renderer() && |
| (ctxInfo.version() >= GR_GL_VER(3,0) || ctxInfo.hasExtension("GL_EXT_sRGB")); |
| // ES through 3.1 requires EXT_srgb_write_control to support toggling |
| // sRGB writing for destinations. |
| fSRGBWriteControl = ctxInfo.hasExtension("GL_EXT_sRGB_write_control"); |
| } |
| fConfigTable[kSRGBA_8888_GrPixelConfig].fFormats.fBaseInternalFormat = GR_GL_SRGB_ALPHA; |
| fConfigTable[kSRGBA_8888_GrPixelConfig].fFormats.fSizedInternalFormat = GR_GL_SRGB8_ALPHA8; |
| // GL does not do srgb<->rgb conversions when transferring between cpu and gpu. Thus, the |
| // external format is GL_RGBA. See below for note about ES2.0 and glTex[Sub]Image. |
| fConfigTable[kSRGBA_8888_GrPixelConfig].fFormats.fExternalFormat[kOther_ExternalFormatUsage] = |
| GR_GL_RGBA; |
| fConfigTable[kSRGBA_8888_GrPixelConfig].fFormats.fExternalType = GR_GL_UNSIGNED_BYTE; |
| fConfigTable[kSRGBA_8888_GrPixelConfig].fFormatType = kNormalizedFixedPoint_FormatType; |
| if (srgbSupport) { |
| fConfigTable[kSRGBA_8888_GrPixelConfig].fFlags = ConfigInfo::kTextureable_Flag | |
| allRenderFlags; |
| } |
| fConfigTable[kSRGBA_8888_GrPixelConfig].fSwizzle = GrSwizzle::RGBA(); |
| |
| fConfigTable[kRGB_565_GrPixelConfig].fFormats.fBaseInternalFormat = GR_GL_RGB; |
| if (this->ES2CompatibilitySupport()) { |
| fConfigTable[kRGB_565_GrPixelConfig].fFormats.fSizedInternalFormat = GR_GL_RGB565; |
| } else { |
| fConfigTable[kRGB_565_GrPixelConfig].fFormats.fSizedInternalFormat = GR_GL_RGB5; |
| } |
| fConfigTable[kRGB_565_GrPixelConfig].fFormats.fExternalFormat[kOther_ExternalFormatUsage] = |
| GR_GL_RGB; |
| fConfigTable[kRGB_565_GrPixelConfig].fFormats.fExternalType = GR_GL_UNSIGNED_SHORT_5_6_5; |
| fConfigTable[kRGB_565_GrPixelConfig].fFormatType = kNormalizedFixedPoint_FormatType; |
| fConfigTable[kRGB_565_GrPixelConfig].fFlags = ConfigInfo::kTextureable_Flag; |
| if (kGL_GrGLStandard == standard) { |
| if (version >= GR_GL_VER(4, 2) || ctxInfo.hasExtension("GL_ES2_compatibility")) { |
| fConfigTable[kRGB_565_GrPixelConfig].fFlags |= allRenderFlags; |
| } |
| } else { |
| fConfigTable[kRGB_565_GrPixelConfig].fFlags |= allRenderFlags; |
| } |
| fConfigTable[kRGB_565_GrPixelConfig].fSwizzle = GrSwizzle::RGBA(); |
| |
| fConfigTable[kRGBA_4444_GrPixelConfig].fFormats.fBaseInternalFormat = GR_GL_RGBA; |
| fConfigTable[kRGBA_4444_GrPixelConfig].fFormats.fSizedInternalFormat = GR_GL_RGBA4; |
| fConfigTable[kRGBA_4444_GrPixelConfig].fFormats.fExternalFormat[kOther_ExternalFormatUsage] = |
| GR_GL_RGBA; |
| fConfigTable[kRGBA_4444_GrPixelConfig].fFormats.fExternalType = GR_GL_UNSIGNED_SHORT_4_4_4_4; |
| fConfigTable[kRGBA_4444_GrPixelConfig].fFormatType = kNormalizedFixedPoint_FormatType; |
| fConfigTable[kRGBA_4444_GrPixelConfig].fFlags = ConfigInfo::kTextureable_Flag; |
| if (kGL_GrGLStandard == standard) { |
| if (version >= GR_GL_VER(4, 2)) { |
| fConfigTable[kRGBA_4444_GrPixelConfig].fFlags |= allRenderFlags; |
| } |
| } else { |
| fConfigTable[kRGBA_4444_GrPixelConfig].fFlags |= allRenderFlags; |
| } |
| fConfigTable[kRGBA_4444_GrPixelConfig].fSwizzle = GrSwizzle::RGBA(); |
| |
| if (this->textureRedSupport()) { |
| fConfigTable[kAlpha_8_GrPixelConfig].fFormats.fBaseInternalFormat = GR_GL_RED; |
| fConfigTable[kAlpha_8_GrPixelConfig].fFormats.fSizedInternalFormat = GR_GL_R8; |
| fConfigTable[kAlpha_8_GrPixelConfig].fFormats.fExternalFormat[kOther_ExternalFormatUsage] = |
| GR_GL_RED; |
| fConfigTable[kAlpha_8_GrPixelConfig].fSwizzle = GrSwizzle::RRRR(); |
| } else { |
| fConfigTable[kAlpha_8_GrPixelConfig].fFormats.fBaseInternalFormat = GR_GL_ALPHA; |
| fConfigTable[kAlpha_8_GrPixelConfig].fFormats.fSizedInternalFormat = GR_GL_ALPHA8; |
| fConfigTable[kAlpha_8_GrPixelConfig].fFormats.fExternalFormat[kOther_ExternalFormatUsage] = |
| GR_GL_ALPHA; |
| fConfigTable[kAlpha_8_GrPixelConfig].fSwizzle = GrSwizzle::AAAA(); |
| } |
| fConfigTable[kAlpha_8_GrPixelConfig].fFormats.fExternalType = GR_GL_UNSIGNED_BYTE; |
| fConfigTable[kAlpha_8_GrPixelConfig].fFormatType = kNormalizedFixedPoint_FormatType; |
| fConfigTable[kAlpha_8_GrPixelConfig].fFlags = ConfigInfo::kTextureable_Flag; |
| if (this->textureRedSupport() || kDesktop_ARB_MSFBOType == this->msFBOType()) { |
| // desktop ARB extension/3.0+ supports ALPHA8 as renderable. |
| // Core profile removes ALPHA8 support, but we should have chosen R8 in that case. |
| fConfigTable[kAlpha_8_GrPixelConfig].fFlags |= allRenderFlags; |
| } |
| |
| // Check for [half] floating point texture support |
| // NOTE: We disallow floating point textures on ES devices if linear filtering modes are not |
| // supported. This is for simplicity, but a more granular approach is possible. Coincidentally, |
| // [half] floating point textures became part of the standard in ES3.1 / OGL 3.0. |
| bool hasFPTextures = false; |
| bool hasHalfFPTextures = false; |
| // for now we don't support floating point MSAA on ES |
| uint32_t fpRenderFlags = (kGL_GrGLStandard == standard) ? |
| allRenderFlags : (uint32_t)ConfigInfo::kRenderable_Flag; |
| |
| if (kGL_GrGLStandard == standard) { |
| if (version >= GR_GL_VER(3, 0) || ctxInfo.hasExtension("GL_ARB_texture_float")) { |
| hasFPTextures = true; |
| hasHalfFPTextures = true; |
| } |
| } else { |
| if (version >= GR_GL_VER(3, 1)) { |
| hasFPTextures = true; |
| hasHalfFPTextures = true; |
| } else { |
| if (ctxInfo.hasExtension("GL_OES_texture_float_linear") && |
| ctxInfo.hasExtension("GL_OES_texture_float")) { |
| hasFPTextures = true; |
| } |
| if (ctxInfo.hasExtension("GL_OES_texture_half_float_linear") && |
| ctxInfo.hasExtension("GL_OES_texture_half_float")) { |
| hasHalfFPTextures = true; |
| } |
| } |
| } |
| |
| fConfigTable[kRGBA_float_GrPixelConfig].fFormats.fBaseInternalFormat = GR_GL_RGBA; |
| fConfigTable[kRGBA_float_GrPixelConfig].fFormats.fSizedInternalFormat = GR_GL_RGBA32F; |
| fConfigTable[kRGBA_float_GrPixelConfig].fFormats.fExternalFormat[kOther_ExternalFormatUsage] = |
| GR_GL_RGBA; |
| fConfigTable[kRGBA_float_GrPixelConfig].fFormats.fExternalType = GR_GL_FLOAT; |
| fConfigTable[kRGBA_float_GrPixelConfig].fFormatType = kFloat_FormatType; |
| if (hasFPTextures) { |
| fConfigTable[kRGBA_float_GrPixelConfig].fFlags = ConfigInfo::kTextureable_Flag; |
| // For now we only enable rendering to float on desktop, because on ES we'd have to solve |
| // many precision issues and no clients actually want this yet. |
| if (kGL_GrGLStandard == standard /* || version >= GR_GL_VER(3,2) || |
| ctxInfo.hasExtension("GL_EXT_color_buffer_float")*/) { |
| fConfigTable[kRGBA_float_GrPixelConfig].fFlags |= fpRenderFlags; |
| } |
| } |
| fConfigTable[kRGBA_float_GrPixelConfig].fSwizzle = GrSwizzle::RGBA(); |
| |
| if (this->textureRedSupport()) { |
| fConfigTable[kAlpha_half_GrPixelConfig].fFormats.fBaseInternalFormat = GR_GL_RED; |
| fConfigTable[kAlpha_half_GrPixelConfig].fFormats.fSizedInternalFormat = GR_GL_R16F; |
| fConfigTable[kAlpha_half_GrPixelConfig].fFormats.fExternalFormat[kOther_ExternalFormatUsage] |
| = GR_GL_RED; |
| fConfigTable[kAlpha_half_GrPixelConfig].fSwizzle = GrSwizzle::RRRR(); |
| } else { |
| fConfigTable[kAlpha_half_GrPixelConfig].fFormats.fBaseInternalFormat = GR_GL_ALPHA; |
| fConfigTable[kAlpha_half_GrPixelConfig].fFormats.fSizedInternalFormat = GR_GL_ALPHA16F; |
| fConfigTable[kAlpha_half_GrPixelConfig].fFormats.fExternalFormat[kOther_ExternalFormatUsage] |
| = GR_GL_ALPHA; |
| fConfigTable[kAlpha_half_GrPixelConfig].fSwizzle = GrSwizzle::AAAA(); |
| } |
| if (kGL_GrGLStandard == ctxInfo.standard() || ctxInfo.version() >= GR_GL_VER(3, 0)) { |
| fConfigTable[kAlpha_half_GrPixelConfig].fFormats.fExternalType = GR_GL_HALF_FLOAT; |
| } else { |
| fConfigTable[kAlpha_half_GrPixelConfig].fFormats.fExternalType = GR_GL_HALF_FLOAT_OES; |
| } |
| fConfigTable[kAlpha_half_GrPixelConfig].fFormatType = kFloat_FormatType; |
| if (hasHalfFPTextures) { |
| fConfigTable[kAlpha_half_GrPixelConfig].fFlags = ConfigInfo::kTextureable_Flag; |
| // ES requires either 3.2 or the combination of EXT_color_buffer_half_float and support for |
| // GL_RED internal format. |
| if (kGL_GrGLStandard == standard || version >= GR_GL_VER(3,2) || |
| (this->textureRedSupport() && |
| ctxInfo.hasExtension("GL_EXT_color_buffer_half_float"))) { |
| fConfigTable[kAlpha_half_GrPixelConfig].fFlags |= fpRenderFlags; |
| } |
| } |
| |
| fConfigTable[kRGBA_half_GrPixelConfig].fFormats.fBaseInternalFormat = GR_GL_RGBA; |
| fConfigTable[kRGBA_half_GrPixelConfig].fFormats.fSizedInternalFormat = GR_GL_RGBA16F; |
| fConfigTable[kRGBA_half_GrPixelConfig].fFormats.fExternalFormat[kOther_ExternalFormatUsage] = |
| GR_GL_RGBA; |
| if (kGL_GrGLStandard == ctxInfo.standard() || ctxInfo.version() >= GR_GL_VER(3, 0)) { |
| fConfigTable[kRGBA_half_GrPixelConfig].fFormats.fExternalType = GR_GL_HALF_FLOAT; |
| } else { |
| fConfigTable[kRGBA_half_GrPixelConfig].fFormats.fExternalType = GR_GL_HALF_FLOAT_OES; |
| } |
| fConfigTable[kRGBA_half_GrPixelConfig].fFormatType = kFloat_FormatType; |
| if (hasHalfFPTextures) { |
| fConfigTable[kRGBA_half_GrPixelConfig].fFlags = ConfigInfo::kTextureable_Flag; |
| // ES requires 3.2 or EXT_color_buffer_half_float. |
| if (kGL_GrGLStandard == standard || version >= GR_GL_VER(3,2) || |
| ctxInfo.hasExtension("GL_EXT_color_buffer_half_float")) { |
| fConfigTable[kRGBA_half_GrPixelConfig].fFlags |= fpRenderFlags; |
| } |
| } |
| fConfigTable[kRGBA_half_GrPixelConfig].fSwizzle = GrSwizzle::RGBA(); |
| |
| // Compressed texture support |
| |
| // glCompressedTexImage2D is available on all OpenGL ES devices. It is available on standard |
| // OpenGL after version 1.3. We'll assume at least that level of OpenGL support. |
| |
| // TODO: Fix command buffer bindings and remove this. |
| fCompressedTexSubImageSupport = SkToBool(gli->fFunctions.fCompressedTexSubImage2D); |
| |
| // No sized/unsized internal format distinction for compressed formats, no external format. |
| // Below we set the external formats and types to 0. |
| |
| fConfigTable[kIndex_8_GrPixelConfig].fFormats.fBaseInternalFormat = GR_GL_PALETTE8_RGBA8; |
| fConfigTable[kIndex_8_GrPixelConfig].fFormats.fSizedInternalFormat = GR_GL_PALETTE8_RGBA8; |
| fConfigTable[kIndex_8_GrPixelConfig].fFormats.fExternalFormat[kOther_ExternalFormatUsage] = 0; |
| fConfigTable[kIndex_8_GrPixelConfig].fFormats.fExternalType = 0; |
| fConfigTable[kIndex_8_GrPixelConfig].fFormatType = kNormalizedFixedPoint_FormatType; |
| // Disable this for now, while we investigate https://bug.skia.org/4333 |
| if (false) { |
| // Check for 8-bit palette.. |
| GrGLint numFormats; |
| GR_GL_GetIntegerv(gli, GR_GL_NUM_COMPRESSED_TEXTURE_FORMATS, &numFormats); |
| if (numFormats) { |
| SkAutoSTMalloc<10, GrGLint> formats(numFormats); |
| GR_GL_GetIntegerv(gli, GR_GL_COMPRESSED_TEXTURE_FORMATS, formats); |
| for (int i = 0; i < numFormats; ++i) { |
| if (GR_GL_PALETTE8_RGBA8 == formats[i]) { |
| fConfigTable[kIndex_8_GrPixelConfig].fFlags = ConfigInfo::kTextureable_Flag; |
| break; |
| } |
| } |
| } |
| } |
| fConfigTable[kIndex_8_GrPixelConfig].fSwizzle = GrSwizzle::RGBA(); |
| |
| // May change the internal format based on extensions. |
| fConfigTable[kLATC_GrPixelConfig].fFormats.fBaseInternalFormat = |
| GR_GL_COMPRESSED_LUMINANCE_LATC1; |
| fConfigTable[kLATC_GrPixelConfig].fFormats.fSizedInternalFormat = |
| GR_GL_COMPRESSED_LUMINANCE_LATC1; |
| if (ctxInfo.hasExtension("GL_EXT_texture_compression_latc") || |
| ctxInfo.hasExtension("GL_NV_texture_compression_latc")) { |
| fConfigTable[kLATC_GrPixelConfig].fFlags = ConfigInfo::kTextureable_Flag; |
| } else if ((kGL_GrGLStandard == standard && version >= GR_GL_VER(3, 0)) || |
| ctxInfo.hasExtension("GL_EXT_texture_compression_rgtc") || |
| ctxInfo.hasExtension("GL_ARB_texture_compression_rgtc")) { |
| // RGTC is identical and available on OpenGL 3.0+ as well as with extensions |
| fConfigTable[kLATC_GrPixelConfig].fFlags = ConfigInfo::kTextureable_Flag; |
| fConfigTable[kLATC_GrPixelConfig].fFormats.fBaseInternalFormat = |
| GR_GL_COMPRESSED_RED_RGTC1; |
| fConfigTable[kLATC_GrPixelConfig].fFormats.fSizedInternalFormat = |
| GR_GL_COMPRESSED_RED_RGTC1; |
| } else if (ctxInfo.hasExtension("GL_AMD_compressed_3DC_texture")) { |
| fConfigTable[kLATC_GrPixelConfig].fFlags = ConfigInfo::kTextureable_Flag; |
| fConfigTable[kLATC_GrPixelConfig].fFormats.fBaseInternalFormat = GR_GL_COMPRESSED_3DC_X; |
| fConfigTable[kLATC_GrPixelConfig].fFormats.fSizedInternalFormat = |
| GR_GL_COMPRESSED_3DC_X; |
| |
| } |
| fConfigTable[kLATC_GrPixelConfig].fFormats.fExternalFormat[kOther_ExternalFormatUsage] = 0; |
| fConfigTable[kLATC_GrPixelConfig].fFormats.fExternalType = 0; |
| fConfigTable[kLATC_GrPixelConfig].fFormatType = kNormalizedFixedPoint_FormatType; |
| fConfigTable[kLATC_GrPixelConfig].fSwizzle = GrSwizzle::RRRR(); |
| |
| fConfigTable[kETC1_GrPixelConfig].fFormats.fBaseInternalFormat = GR_GL_COMPRESSED_ETC1_RGB8; |
| fConfigTable[kETC1_GrPixelConfig].fFormats.fSizedInternalFormat = GR_GL_COMPRESSED_ETC1_RGB8; |
| fConfigTable[kETC1_GrPixelConfig].fFormats.fExternalFormat[kOther_ExternalFormatUsage] = 0; |
| fConfigTable[kETC1_GrPixelConfig].fFormats.fExternalType = 0; |
| fConfigTable[kETC1_GrPixelConfig].fFormatType = kNormalizedFixedPoint_FormatType; |
| if (kGL_GrGLStandard == standard) { |
| if (version >= GR_GL_VER(4, 3) || ctxInfo.hasExtension("GL_ARB_ES3_compatibility")) { |
| fConfigTable[kETC1_GrPixelConfig].fFlags = ConfigInfo::kTextureable_Flag; |
| } |
| } else { |
| if (version >= GR_GL_VER(3, 0) || |
| ctxInfo.hasExtension("GL_OES_compressed_ETC1_RGB8_texture") || |
| // ETC2 is a superset of ETC1, so we can just check for that, too. |
| (ctxInfo.hasExtension("GL_OES_compressed_ETC2_RGB8_texture") && |
| ctxInfo.hasExtension("GL_OES_compressed_ETC2_RGBA8_texture"))) { |
| fConfigTable[kETC1_GrPixelConfig].fFlags = ConfigInfo::kTextureable_Flag; |
| } |
| } |
| fConfigTable[kETC1_GrPixelConfig].fSwizzle = GrSwizzle::RGBA(); |
| |
| fConfigTable[kR11_EAC_GrPixelConfig].fFormats.fBaseInternalFormat = GR_GL_COMPRESSED_R11_EAC; |
| fConfigTable[kR11_EAC_GrPixelConfig].fFormats.fSizedInternalFormat = GR_GL_COMPRESSED_R11_EAC; |
| fConfigTable[kR11_EAC_GrPixelConfig].fFormats.fExternalFormat[kOther_ExternalFormatUsage] = 0; |
| fConfigTable[kR11_EAC_GrPixelConfig].fFormats.fExternalType = 0; |
| fConfigTable[kR11_EAC_GrPixelConfig].fFormatType = kNormalizedFixedPoint_FormatType; |
| // Check for R11_EAC. We don't support R11_EAC on desktop, as most cards default to |
| // decompressing the textures in the driver, and is generally slower. |
| if (kGLES_GrGLStandard == standard && version >= GR_GL_VER(3,0)) { |
| fConfigTable[kR11_EAC_GrPixelConfig].fFlags = ConfigInfo::kTextureable_Flag; |
| } |
| fConfigTable[kR11_EAC_GrPixelConfig].fSwizzle = GrSwizzle::RRRR(); |
| |
| fConfigTable[kASTC_12x12_GrPixelConfig].fFormats.fBaseInternalFormat = |
| GR_GL_COMPRESSED_RGBA_ASTC_12x12; |
| fConfigTable[kASTC_12x12_GrPixelConfig].fFormats.fSizedInternalFormat = |
| GR_GL_COMPRESSED_RGBA_ASTC_12x12; |
| fConfigTable[kASTC_12x12_GrPixelConfig].fFormats.fExternalFormat[kOther_ExternalFormatUsage] = |
| 0; |
| fConfigTable[kASTC_12x12_GrPixelConfig].fFormats.fExternalType = 0; |
| fConfigTable[kASTC_12x12_GrPixelConfig].fFormatType = kNormalizedFixedPoint_FormatType; |
| if (ctxInfo.hasExtension("GL_KHR_texture_compression_astc_hdr") || |
| ctxInfo.hasExtension("GL_KHR_texture_compression_astc_ldr") || |
| ctxInfo.hasExtension("GL_OES_texture_compression_astc")) { |
| fConfigTable[kASTC_12x12_GrPixelConfig].fFlags = ConfigInfo::kTextureable_Flag; |
| } |
| fConfigTable[kASTC_12x12_GrPixelConfig].fSwizzle = GrSwizzle::RGBA(); |
| |
| // Bulk populate the texture internal/external formats here and then deal with exceptions below. |
| |
| // ES 2.0 requires that the internal/external formats match. |
| bool useSizedTexFormats = (kGL_GrGLStandard == ctxInfo.standard() || |
| ctxInfo.version() >= GR_GL_VER(3,0)); |
| // All ES versions (thus far) require sized internal formats for render buffers. |
| // TODO: Always use sized internal format? |
| bool useSizedRbFormats = kGLES_GrGLStandard == ctxInfo.standard(); |
| |
| for (int i = 0; i < kGrPixelConfigCnt; ++i) { |
| // Almost always we want to pass fExternalFormat[kOther_ExternalFormatUsage] as the <format> |
| // param to glTex[Sub]Image. |
| fConfigTable[i].fFormats.fExternalFormat[kTexImage_ExternalFormatUsage] = |
| fConfigTable[i].fFormats.fExternalFormat[kOther_ExternalFormatUsage]; |
| fConfigTable[i].fFormats.fInternalFormatTexImage = useSizedTexFormats ? |
| fConfigTable[i].fFormats.fSizedInternalFormat : |
| fConfigTable[i].fFormats.fBaseInternalFormat; |
| fConfigTable[i].fFormats.fInternalFormatRenderbuffer = useSizedRbFormats ? |
| fConfigTable[i].fFormats.fSizedInternalFormat : |
| fConfigTable[i].fFormats.fBaseInternalFormat; |
| } |
| // OpenGL ES 2.0 + GL_EXT_sRGB allows GL_SRGB_ALPHA to be specified as the <format> |
| // param to Tex(Sub)Image. ES 2.0 requires the <internalFormat> and <format> params to match. |
| // Thus, on ES 2.0 we will use GL_SRGB_ALPHA as the <format> param. |
| // On OpenGL and ES 3.0+ GL_SRGB_ALPHA does not work for the <format> param to glTexImage. |
| if (ctxInfo.standard() == kGLES_GrGLStandard && ctxInfo.version() == GR_GL_VER(2,0)) { |
| fConfigTable[kSRGBA_8888_GrPixelConfig].fFormats.fExternalFormat[kTexImage_ExternalFormatUsage] = |
| GR_GL_SRGB_ALPHA; |
| } |
| |
| // If BGRA is supported as an internal format it must always be specified to glTex[Sub]Image |
| // as a base format. |
| // GL_EXT_texture_format_BGRA8888: |
| // This extension GL_BGRA as an unsized internal format. However, it is written against ES |
| // 2.0 and therefore doesn't define a value for GL_BGRA8 as ES 2.0 uses unsized internal |
| // formats. |
| // GL_APPLE_texture_format_BGRA8888: |
| // ES 2.0: the extension makes BGRA an external format but not an internal format. |
| // ES 3.0: the extension explicitly states GL_BGRA8 is not a valid internal format for |
| // glTexImage (just for glTexStorage). |
| if (useSizedTexFormats && this->bgraIsInternalFormat()) { |
| fConfigTable[kBGRA_8888_GrPixelConfig].fFormats.fInternalFormatTexImage = GR_GL_BGRA; |
| } |
| |
| // If we don't have texture swizzle support then the shader generator must insert the |
| // swizzle into shader code. |
| if (!this->textureSwizzleSupport()) { |
| for (int i = 0; i < kGrPixelConfigCnt; ++i) { |
| glslCaps->fConfigTextureSwizzle[i] = fConfigTable[i].fSwizzle; |
| } |
| } |
| |
| // Shader output swizzles will default to RGBA. When we've use GL_RED instead of GL_ALPHA to |
| // implement kAlpha_8_GrPixelConfig we need to swizzle the shader outputs so the alpha channel |
| // gets written to the single component. |
| if (this->textureRedSupport()) { |
| for (int i = 0; i < kGrPixelConfigCnt; ++i) { |
| GrPixelConfig config = static_cast<GrPixelConfig>(i); |
| if (GrPixelConfigIsAlphaOnly(config) && |
| fConfigTable[i].fFormats.fBaseInternalFormat == GR_GL_RED) { |
| glslCaps->fConfigOutputSwizzle[i] = GrSwizzle::AAAA(); |
| } |
| } |
| } |
| |
| #ifdef SK_DEBUG |
| // Make sure we initialized everything. |
| ConfigInfo defaultEntry; |
| for (int i = 0; i < kGrPixelConfigCnt; ++i) { |
| SkASSERT(defaultEntry.fFormats.fBaseInternalFormat != |
| fConfigTable[i].fFormats.fBaseInternalFormat); |
| SkASSERT(defaultEntry.fFormats.fSizedInternalFormat != |
| fConfigTable[i].fFormats.fSizedInternalFormat); |
| for (int j = 0; j < kExternalFormatUsageCnt; ++j) { |
| SkASSERT(defaultEntry.fFormats.fExternalFormat[j] != |
| fConfigTable[i].fFormats.fExternalFormat[j]); |
| } |
| SkASSERT(defaultEntry.fFormats.fExternalType != fConfigTable[i].fFormats.fExternalType); |
| } |
| #endif |
| } |
| |
| void GrGLCaps::onApplyOptionsOverrides(const GrContextOptions& options) {} |
