| /* |
| * 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 "glsl/GrGLSLCaps.h" |
| #include "SkTSearch.h" |
| #include "SkTSort.h" |
| |
| GrGLCaps::GrGLCaps(const GrContextOptions& contextOptions, |
| const GrGLContextInfo& ctxInfo, |
| const GrGLInterface* glInterface) : INHERITED(contextOptions) { |
| fVerifiedColorConfigs.reset(); |
| fStencilFormats.reset(); |
| fMSFBOType = kNone_MSFBOType; |
| fInvalidateFBType = kNone_InvalidateFBType; |
| fLATCAlias = kLATC_LATCAlias; |
| fMapBufferType = kNone_MapBufferType; |
| fTransferBufferType = kNone_TransferBufferType; |
| fMaxFragmentUniformVectors = 0; |
| fMaxVertexAttributes = 0; |
| fMaxFragmentTextureUnits = 0; |
| fRGBA8RenderbufferSupport = false; |
| fBGRAIsInternalFormat = false; |
| fUnpackRowLengthSupport = false; |
| fUnpackFlipYSupport = false; |
| fPackRowLengthSupport = false; |
| fPackFlipYSupport = false; |
| fTextureUsageSupport = false; |
| fTexStorageSupport = false; |
| fTextureRedSupport = false; |
| fImagingSupport = false; |
| fTwoFormatLimit = false; |
| fVertexArrayObjectSupport = false; |
| fInstancedDrawingSupport = false; |
| fDirectStateAccessSupport = false; |
| fDebugSupport = false; |
| fES2CompatibilitySupport = false; |
| fMultisampleDisableSupport = false; |
| fUseNonVBOVertexAndIndexDynamicData = false; |
| fIsCoreProfile = false; |
| fBindFragDataLocationSupport = false; |
| fExternalTextureSupport = false; |
| fSRGBWriteControl = false; |
| fRGBA8888PixelsOpsAreSlow = false; |
| fPartialFBOReadIsSlow = false; |
| |
| fReadPixelsSupportedCache.reset(); |
| |
| 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) { |
| fRGBA8RenderbufferSupport = true; |
| } else { |
| fRGBA8RenderbufferSupport = version >= GR_GL_VER(3,0) || |
| ctxInfo.hasExtension("GL_OES_rgb8_rgba8") || |
| ctxInfo.hasExtension("GL_ARM_rgba8"); |
| } |
| |
| 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"); |
| |
| // ES 2 only guarantees RGBA/uchar + one other format/type combo for |
| // ReadPixels. The other format has to checked at run-time since it |
| // can change based on which render target is bound |
| fTwoFormatLimit = kGLES_GrGLStandard == standard; |
| |
| // 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"); |
| } |
| |
| // 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 && version >= GR_GL_VER(3,2)) || |
| (kGLES_GrGLStandard == standard && version >= GR_GL_VER(3,0))) { |
| fInstancedDrawingSupport = true; |
| } else { |
| fInstancedDrawingSupport = (ctxInfo.hasExtension("GL_ARB_draw_instanced") || |
| ctxInfo.hasExtension("GL_EXT_draw_instanced")) && |
| (ctxInfo.hasExtension("GL_ARB_instanced_arrays") || |
| ctxInfo.hasExtension("GL_EXT_instanced_arrays")); |
| } |
| |
| 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; |
| } |
| } |
| |
| #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()) { |
| fMixedSamplesSupport = ctxInfo.hasExtension("GL_NV_framebuffer_mixed_samples") || |
| ctxInfo.hasExtension("GL_CHROMIUM_framebuffer_mixed_samples"); |
| // Workaround NVIDIA bug related to glInvalidateFramebuffer and mixed samples. |
| if (fMixedSamplesSupport && kNVIDIA_GrGLDriver == ctxInfo.driver()) { |
| fDiscardRenderTargetSupport = false; |
| fInvalidateFBType = kNone_InvalidateFBType; |
| } |
| } |
| |
| // fPathRenderingSupport and fMixedSamplesSupport 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, &fMaxSampleCount); |
| } else if (GrGLCaps::kNone_MSFBOType != fMSFBOType) { |
| GR_GL_GetIntegerv(gli, GR_GL_MAX_SAMPLES, &fMaxSampleCount); |
| } |
| |
| 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->initConfigTexturableTable(ctxInfo, gli, srgbSupport); |
| this->initConfigRenderableTable(ctxInfo, srgbSupport); |
| this->initShaderPrecisionTable(ctxInfo, gli, glslCaps); |
| // Requires fTexutreSwizzleSupport and fTextureRedSupport to be set before this point. |
| this->initConfigSwizzleTable(ctxInfo, 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; |
| } |
| |
| void GrGLCaps::initConfigRenderableTable(const GrGLContextInfo& ctxInfo, bool srgbSupport) { |
| // OpenGL < 3.0 |
| // no support for render targets unless the GL_ARB_framebuffer_object |
| // extension is supported (in which case we get ALPHA, RED, RG, RGB, |
| // RGBA (ALPHA8, RGBA4, RGBA8) for OpenGL > 1.1). Note that we |
| // probably don't get R8 in this case. |
| |
| // OpenGL 3.0 |
| // base color renderable: ALPHA, RED, RG, RGB, and RGBA |
| // sized derivatives: ALPHA8, R8, RGBA4, RGBA8 |
| |
| // >= OpenGL 3.1 |
| // base color renderable: RED, RG, RGB, and RGBA |
| // sized derivatives: R8, RGBA4, RGBA8 |
| // if the GL_ARB_compatibility extension is supported then we get back |
| // support for GL_ALPHA and ALPHA8 |
| |
| // GL_EXT_bgra adds BGRA render targets to any version |
| |
| // ES 2.0 |
| // color renderable: RGBA4, RGB5_A1, RGB565 |
| // GL_EXT_texture_rg adds support for R8 as a color render target |
| // GL_OES_rgb8_rgba8 and/or GL_ARM_rgba8 adds support for RGBA8 |
| // GL_EXT_texture_format_BGRA8888 and/or GL_APPLE_texture_format_BGRA8888 added BGRA support |
| |
| // ES 3.0 |
| // Same as ES 2.0 except R8 and RGBA8 are supported without extensions (the functions called |
| // below already account for this). |
| |
| GrGLStandard standard = ctxInfo.standard(); |
| |
| enum { |
| kNo_MSAA = 0, |
| kYes_MSAA = 1, |
| }; |
| |
| if (kGL_GrGLStandard == standard) { |
| // Post 3.0 we will get R8 |
| // Prior to 3.0 we will get ALPHA8 (with GL_ARB_framebuffer_object) |
| if (ctxInfo.version() >= GR_GL_VER(3,0) || |
| ctxInfo.hasExtension("GL_ARB_framebuffer_object")) { |
| fConfigRenderSupport[kAlpha_8_GrPixelConfig][kNo_MSAA] = true; |
| fConfigRenderSupport[kAlpha_8_GrPixelConfig][kYes_MSAA] = true; |
| } |
| } else { |
| // On ES we can only hope for R8 |
| fConfigRenderSupport[kAlpha_8_GrPixelConfig][kNo_MSAA] = fTextureRedSupport; |
| fConfigRenderSupport[kAlpha_8_GrPixelConfig][kYes_MSAA] = fTextureRedSupport; |
| } |
| |
| if (kGL_GrGLStandard != standard) { |
| // only available in ES |
| fConfigRenderSupport[kRGB_565_GrPixelConfig][kNo_MSAA] = true; |
| fConfigRenderSupport[kRGB_565_GrPixelConfig][kYes_MSAA] = true; |
| } |
| |
| // we no longer support 444 as a render target |
| fConfigRenderSupport[kRGBA_4444_GrPixelConfig][kNo_MSAA] = false; |
| fConfigRenderSupport[kRGBA_4444_GrPixelConfig][kYes_MSAA] = false; |
| |
| if (this->fRGBA8RenderbufferSupport) { |
| fConfigRenderSupport[kRGBA_8888_GrPixelConfig][kNo_MSAA] = true; |
| fConfigRenderSupport[kRGBA_8888_GrPixelConfig][kYes_MSAA] = true; |
| } |
| |
| if (this->isConfigTexturable(kBGRA_8888_GrPixelConfig)) { |
| fConfigRenderSupport[kBGRA_8888_GrPixelConfig][kNo_MSAA] = true; |
| // The GL_EXT_texture_format_BGRA8888 extension does not add BGRA to the list of |
| // configs that are color-renderable and can be passed to glRenderBufferStorageMultisample. |
| // Chromium may have an extension to allow BGRA renderbuffers to work on desktop platforms. |
| if (ctxInfo.hasExtension("GL_CHROMIUM_renderbuffer_format_BGRA8888")) { |
| fConfigRenderSupport[kBGRA_8888_GrPixelConfig][kYes_MSAA] = true; |
| } else { |
| fConfigRenderSupport[kBGRA_8888_GrPixelConfig][kYes_MSAA] = |
| !fBGRAIsInternalFormat || !this->usesMSAARenderBuffers(); |
| } |
| } |
| |
| if (this->fRGBA8RenderbufferSupport && srgbSupport) { |
| fConfigRenderSupport[kSRGBA_8888_GrPixelConfig][kNo_MSAA] = true; |
| fConfigRenderSupport[kSRGBA_8888_GrPixelConfig][kYes_MSAA] = true; |
| } |
| |
| if (this->isConfigTexturable(kRGBA_float_GrPixelConfig)) { |
| if (kGL_GrGLStandard == standard) { |
| fConfigRenderSupport[kRGBA_float_GrPixelConfig][kNo_MSAA] = true; |
| fConfigRenderSupport[kRGBA_float_GrPixelConfig][kYes_MSAA] = true; |
| } else { |
| // for now we only enable this on desktop, because on ES we'd have to solve many |
| // precision issues and no clients actually want this yet |
| /* |
| if (ctxInfo.hasExtension("GL_EXT_color_buffer_float")) { |
| fConfigRenderSupport[kRGBA_float_GrPixelConfig][kNo_MSAA] = true; |
| } else { |
| fConfigRenderSupport[kRGBA_float_GrPixelConfig][kNo_MSAA] = false; |
| } |
| // for now we don't support floating point MSAA on ES |
| fConfigRenderSupport[kRGBA_float_GrPixelConfig][kYes_MSAA] = false;*/ |
| fConfigRenderSupport[kRGBA_float_GrPixelConfig][kNo_MSAA] = false; |
| fConfigRenderSupport[kRGBA_float_GrPixelConfig][kYes_MSAA] = false; |
| } |
| } |
| |
| if (this->isConfigTexturable(kAlpha_half_GrPixelConfig)) { |
| if (kGL_GrGLStandard == standard) { |
| fConfigRenderSupport[kAlpha_half_GrPixelConfig][kNo_MSAA] = true; |
| fConfigRenderSupport[kAlpha_half_GrPixelConfig][kYes_MSAA] = true; |
| } else if (ctxInfo.version() >= GR_GL_VER(3,0)) { |
| fConfigRenderSupport[kAlpha_half_GrPixelConfig][kNo_MSAA] = true; |
| // for now we don't support floating point MSAA on ES |
| fConfigRenderSupport[kAlpha_half_GrPixelConfig][kYes_MSAA] = false; |
| } else { |
| if (ctxInfo.hasExtension("GL_EXT_color_buffer_half_float") && fTextureRedSupport) { |
| fConfigRenderSupport[kAlpha_half_GrPixelConfig][kNo_MSAA] = true; |
| } else { |
| fConfigRenderSupport[kAlpha_half_GrPixelConfig][kNo_MSAA] = false; |
| } |
| // for now we don't support floating point MSAA on ES |
| fConfigRenderSupport[kAlpha_half_GrPixelConfig][kYes_MSAA] = false; |
| } |
| } |
| |
| if (this->isConfigTexturable(kRGBA_half_GrPixelConfig)) { |
| if (kGL_GrGLStandard == standard) { |
| fConfigRenderSupport[kRGBA_half_GrPixelConfig][kNo_MSAA] = true; |
| fConfigRenderSupport[kRGBA_half_GrPixelConfig][kYes_MSAA] = true; |
| } else if (ctxInfo.version() >= GR_GL_VER(3, 0)) { |
| fConfigRenderSupport[kRGBA_half_GrPixelConfig][kNo_MSAA] = true; |
| // for now we don't support floating point MSAA on ES |
| fConfigRenderSupport[kRGBA_half_GrPixelConfig][kYes_MSAA] = false; |
| } else { |
| if (ctxInfo.hasExtension("GL_EXT_color_buffer_half_float")) { |
| fConfigRenderSupport[kRGBA_half_GrPixelConfig][kNo_MSAA] = true; |
| } else { |
| fConfigRenderSupport[kRGBA_half_GrPixelConfig][kNo_MSAA] = false; |
| } |
| // for now we don't support floating point MSAA on ES |
| fConfigRenderSupport[kRGBA_half_GrPixelConfig][kYes_MSAA] = false; |
| } |
| } |
| |
| // If we don't support MSAA then undo any places above where we set a config as renderable with |
| // msaa. |
| if (kNone_MSFBOType == fMSFBOType) { |
| for (int i = 0; i < kGrPixelConfigCnt; ++i) { |
| fConfigRenderSupport[i][kYes_MSAA] = false; |
| } |
| } |
| } |
| |
| void GrGLCaps::initConfigTexturableTable(const GrGLContextInfo& ctxInfo, const GrGLInterface* gli, |
| bool srgbSupport) { |
| GrGLStandard standard = ctxInfo.standard(); |
| GrGLVersion version = ctxInfo.version(); |
| |
| // Base texture support |
| fConfigTextureSupport[kAlpha_8_GrPixelConfig] = true; |
| fConfigTextureSupport[kRGB_565_GrPixelConfig] = true; |
| fConfigTextureSupport[kRGBA_4444_GrPixelConfig] = true; |
| fConfigTextureSupport[kRGBA_8888_GrPixelConfig] = true; |
| |
| // 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]) { |
| fConfigTextureSupport[kIndex_8_GrPixelConfig] = true; |
| break; |
| } |
| } |
| } |
| } |
| |
| // Check for BGRA |
| if (kGL_GrGLStandard == standard) { |
| fConfigTextureSupport[kBGRA_8888_GrPixelConfig] = |
| version >= GR_GL_VER(1,2) || ctxInfo.hasExtension("GL_EXT_bgra"); |
| } else { |
| if (ctxInfo.hasExtension("GL_APPLE_texture_format_BGRA8888")) { |
| fConfigTextureSupport[kBGRA_8888_GrPixelConfig] = true; |
| if (version >= GR_GL_VER(3,0) || ctxInfo.hasExtension("GL_EXT_texture_storage")) { |
| fBGRAIsInternalFormat = true; |
| } |
| } else if (ctxInfo.hasExtension("GL_EXT_texture_format_BGRA8888")) { |
| fConfigTextureSupport[kBGRA_8888_GrPixelConfig] = true; |
| fBGRAIsInternalFormat = true; |
| } |
| SkASSERT(fConfigTextureSupport[kBGRA_8888_GrPixelConfig] || |
| kSkia8888_GrPixelConfig != kBGRA_8888_GrPixelConfig); |
| } |
| |
| fConfigTextureSupport[kSRGBA_8888_GrPixelConfig] = srgbSupport; |
| |
| // Compressed texture support |
| |
| // glCompressedTexImage2D is available on all OpenGL ES devices... |
| // however, it is only available on standard OpenGL after version 1.3 |
| bool hasCompressTex2D = (kGL_GrGLStandard != standard || version >= GR_GL_VER(1, 3)); |
| |
| fCompressedTexSubImageSupport = |
| hasCompressTex2D && (gli->fFunctions.fCompressedTexSubImage2D); |
| |
| // Check for ETC1 |
| bool hasETC1 = false; |
| |
| // First check version for support |
| if (kGL_GrGLStandard == standard) { |
| hasETC1 = hasCompressTex2D && |
| (version >= GR_GL_VER(4, 3) || |
| ctxInfo.hasExtension("GL_ARB_ES3_compatibility")); |
| } else { |
| hasETC1 = hasCompressTex2D && |
| (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"))); |
| } |
| fConfigTextureSupport[kETC1_GrPixelConfig] = hasETC1; |
| |
| // Check for LATC under its various forms |
| LATCAlias alias = kLATC_LATCAlias; |
| bool hasLATC = hasCompressTex2D && |
| (ctxInfo.hasExtension("GL_EXT_texture_compression_latc") || |
| ctxInfo.hasExtension("GL_NV_texture_compression_latc")); |
| |
| // Check for RGTC |
| if (!hasLATC) { |
| // If we're using OpenGL 3.0 or later, then we have RGTC, an identical compression format. |
| if (kGL_GrGLStandard == standard) { |
| hasLATC = version >= GR_GL_VER(3, 0); |
| } |
| |
| if (!hasLATC) { |
| hasLATC = |
| ctxInfo.hasExtension("GL_EXT_texture_compression_rgtc") || |
| ctxInfo.hasExtension("GL_ARB_texture_compression_rgtc"); |
| } |
| |
| if (hasLATC) { |
| alias = kRGTC_LATCAlias; |
| } |
| } |
| |
| // Check for 3DC |
| if (!hasLATC) { |
| hasLATC = ctxInfo.hasExtension("GL_AMD_compressed_3DC_texture"); |
| if (hasLATC) { |
| alias = k3DC_LATCAlias; |
| } |
| } |
| |
| fConfigTextureSupport[kLATC_GrPixelConfig] = hasLATC; |
| fLATCAlias = alias; |
| |
| // 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 (kGL_GrGLStandard != standard) { |
| fConfigTextureSupport[kR11_EAC_GrPixelConfig] = version >= GR_GL_VER(3, 0); |
| } |
| |
| // Check for ASTC |
| fConfigTextureSupport[kASTC_12x12_GrPixelConfig] = |
| ctxInfo.hasExtension("GL_KHR_texture_compression_astc_hdr") || |
| ctxInfo.hasExtension("GL_KHR_texture_compression_astc_ldr") || |
| ctxInfo.hasExtension("GL_OES_texture_compression_astc"); |
| |
| // Check for 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, floating point textures became part of |
| // the standard in ES3.1 / OGL 3.1, hence the shorthand |
| bool hasFPTextures = version >= GR_GL_VER(3, 1); |
| if (!hasFPTextures) { |
| hasFPTextures = ctxInfo.hasExtension("GL_ARB_texture_float") || |
| (ctxInfo.hasExtension("GL_OES_texture_float_linear") && |
| ctxInfo.hasExtension("GL_OES_texture_float")); |
| } |
| fConfigTextureSupport[kRGBA_float_GrPixelConfig] = hasFPTextures; |
| |
| // Check for fp16 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, 16-bit floating point textures became part of |
| // the standard in ES3.1 / OGL 3.1, hence the shorthand |
| bool hasHalfFPTextures = version >= GR_GL_VER(3, 1); |
| if (!hasHalfFPTextures) { |
| hasHalfFPTextures = ctxInfo.hasExtension("GL_ARB_texture_float") || |
| (ctxInfo.hasExtension("GL_OES_texture_half_float_linear") && |
| ctxInfo.hasExtension("GL_OES_texture_half_float")); |
| } |
| fConfigTextureSupport[kAlpha_half_GrPixelConfig] = hasHalfFPTextures; |
| fConfigTextureSupport[kRGBA_half_GrPixelConfig] = hasHalfFPTextures; |
| } |
| |
| bool GrGLCaps::doReadPixelsSupported(const GrGLInterface* intf, |
| GrGLenum format, |
| GrGLenum type) const { |
| if (GR_GL_RGBA == format && GR_GL_UNSIGNED_BYTE == type) { |
| // ES 2 guarantees this format is supported |
| return true; |
| } |
| |
| if (!fTwoFormatLimit) { |
| // not limited by ES 2's constraints |
| return true; |
| } |
| |
| GrGLint otherFormat = GR_GL_RGBA; |
| GrGLint otherType = GR_GL_UNSIGNED_BYTE; |
| |
| // The other supported format/type combo supported for ReadPixels |
| // can change based on which render target is bound |
| GR_GL_GetIntegerv(intf, |
| GR_GL_IMPLEMENTATION_COLOR_READ_FORMAT, |
| &otherFormat); |
| |
| GR_GL_GetIntegerv(intf, |
| GR_GL_IMPLEMENTATION_COLOR_READ_TYPE, |
| &otherType); |
| |
| return (GrGLenum)otherFormat == format && (GrGLenum)otherType == type; |
| } |
| |
| bool GrGLCaps::readPixelsSupported(const GrGLInterface* intf, |
| GrGLenum format, |
| GrGLenum type, |
| GrGLenum currFboFormat) const { |
| ReadPixelsSupportedFormat key = {format, type, currFboFormat}; |
| if (const bool* supported = fReadPixelsSupportedCache.find(key)) { |
| return *supported; |
| } |
| bool supported = this->doReadPixelsSupported(intf, format, type); |
| fReadPixelsSupportedCache.set(key, supported); |
| return supported; |
| } |
| |
| 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 (fMixedSamplesSupport && fShaderCaps->pathRenderingSupport()) { |
| 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 (fMixedSamplesSupport && fShaderCaps->pathRenderingSupport()) { |
| 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("Support RGBA8 Render Buffer: %s\n", (fRGBA8RenderbufferSupport ? "YES": "NO")); |
| r.appendf("BGRA is an internal format: %s\n", (fBGRAIsInternalFormat ? "YES": "NO")); |
| 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("Two Format Limit: %s\n", (fTwoFormatLimit ? "YES": "NO")); |
| r.appendf("Vertex array object support: %s\n", (fVertexArrayObjectSupport ? "YES": "NO")); |
| r.appendf("Instanced drawing support: %s\n", (fInstancedDrawingSupport ? "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")); |
| 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]; |
| } |
| } |
| } |
| |
| void GrGLCaps::initConfigSwizzleTable(const GrGLContextInfo& ctxInfo, GrGLSLCaps* glslCaps) { |
| GrGLStandard standard = ctxInfo.standard(); |
| GrGLVersion version = ctxInfo.version(); |
| |
| glslCaps->fMustSwizzleInShader = true; |
| if (kGL_GrGLStandard == standard) { |
| if (version >= GR_GL_VER(3,3) || ctxInfo.hasExtension("GL_ARB_texture_swizzle")) { |
| glslCaps->fMustSwizzleInShader = false; |
| } |
| } else { |
| if (version >= GR_GL_VER(3,0)) { |
| glslCaps->fMustSwizzleInShader = false; |
| } |
| } |
| |
| glslCaps->fConfigSwizzle[kUnknown_GrPixelConfig] = nullptr; |
| if (fTextureRedSupport) { |
| glslCaps->fConfigSwizzle[kAlpha_8_GrPixelConfig] = "rrrr"; |
| glslCaps->fConfigSwizzle[kAlpha_half_GrPixelConfig] = "rrrr"; |
| } else { |
| glslCaps->fConfigSwizzle[kAlpha_8_GrPixelConfig] = "aaaa"; |
| glslCaps->fConfigSwizzle[kAlpha_half_GrPixelConfig] = "aaaa"; |
| } |
| glslCaps->fConfigSwizzle[kIndex_8_GrPixelConfig] = "rgba"; |
| glslCaps->fConfigSwizzle[kRGB_565_GrPixelConfig] = "rgba"; |
| glslCaps->fConfigSwizzle[kRGBA_4444_GrPixelConfig] = "rgba"; |
| glslCaps->fConfigSwizzle[kRGBA_8888_GrPixelConfig] = "rgba"; |
| glslCaps->fConfigSwizzle[kBGRA_8888_GrPixelConfig] = "rgba"; |
| glslCaps->fConfigSwizzle[kSRGBA_8888_GrPixelConfig] = "rgba"; |
| glslCaps->fConfigSwizzle[kETC1_GrPixelConfig] = "rgba"; |
| glslCaps->fConfigSwizzle[kLATC_GrPixelConfig] = "rrrr"; |
| glslCaps->fConfigSwizzle[kR11_EAC_GrPixelConfig] = "rrrr"; |
| glslCaps->fConfigSwizzle[kASTC_12x12_GrPixelConfig] = "rgba"; |
| glslCaps->fConfigSwizzle[kRGBA_float_GrPixelConfig] = "rgba"; |
| glslCaps->fConfigSwizzle[kRGBA_half_GrPixelConfig] = "rgba"; |
| |
| } |
| |
| void GrGLCaps::onApplyOptionsOverrides(const GrContextOptions& options) {} |
| |
| |
