| /* |
| * 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 "src/gpu/GrShaderCaps.h" |
| |
| #include "include/gpu/GrContextOptions.h" |
| #include "src/utils/SkJSONWriter.h" |
| |
| //////////////////////////////////////////////////////////////////////////////////////////// |
| |
| GrShaderCaps::GrShaderCaps(const GrContextOptions& options) { |
| fGLSLGeneration = k330_GrGLSLGeneration; |
| fShaderDerivativeSupport = false; |
| fGeometryShaderSupport = false; |
| fGSInvocationsSupport = false; |
| fDstReadInShaderSupport = false; |
| fDualSourceBlendingSupport = false; |
| fIntegerSupport = false; |
| fNonsquareMatrixSupport = false; |
| fFBFetchSupport = false; |
| fFBFetchNeedsCustomOutput = false; |
| fUsesPrecisionModifiers = false; |
| fCanUseAnyFunctionInShader = true; |
| fCanUseMinAndAbsTogether = true; |
| fCanUseFractForNegativeValues = true; |
| fMustForceNegatedAtanParamToFloat = false; |
| fMustForceNegatedLdexpParamToMultiply = false; |
| fAtan2ImplementedAsAtanYOverX = false; |
| fMustDoOpBetweenFloorAndAbs = false; |
| fRequiresLocalOutputColorForFBFetch = false; |
| fMustObfuscateUniformColor = false; |
| fMustGuardDivisionEvenAfterExplicitZeroCheck = false; |
| fInBlendModesFailRandomlyForAllZeroVec = false; |
| fCanUseFragCoord = true; |
| fIncompleteShortIntPrecision = false; |
| fAddAndTrueToLoopCondition = false; |
| fUnfoldShortCircuitAsTernary = false; |
| fEmulateAbsIntFunction = false; |
| fRewriteDoWhileLoops = false; |
| fRemovePowWithConstantExponent = false; |
| fMustWriteToFragColor = false; |
| fNoDefaultPrecisionForExternalSamplers = false; |
| fRewriteMatrixVectorMultiply = false; |
| fRewriteMatrixComparisons = false; |
| fFlatInterpolationSupport = false; |
| fPreferFlatInterpolation = false; |
| fNoPerspectiveInterpolationSupport = false; |
| fSampleMaskSupport = false; |
| fExternalTextureSupport = false; |
| fVertexIDSupport = false; |
| fBitManipulationSupport = false; |
| fFloatIs32Bits = true; |
| fHalfIs32Bits = false; |
| fHasLowFragmentPrecision = false; |
| fReducedShaderMode = false; |
| fColorSpaceMathNeedsFloat = false; |
| fBuiltinFMASupport = false; |
| fBuiltinDeterminantSupport = false; |
| fCanUseDoLoops = true; |
| fCanUseFastMath = false; |
| fUseNodePools = true; |
| fAvoidDfDxForGradientsWhenPossible = false; |
| |
| fVersionDeclString = nullptr; |
| fShaderDerivativeExtensionString = nullptr; |
| fGeometryShaderExtensionString = nullptr; |
| fGSInvocationsExtensionString = nullptr; |
| fFragCoordConventionsExtensionString = nullptr; |
| fSecondaryOutputExtensionString = nullptr; |
| fExternalTextureExtensionString = nullptr; |
| fSecondExternalTextureExtensionString = nullptr; |
| fNoPerspectiveInterpolationExtensionString = nullptr; |
| fSampleVariablesExtensionString = nullptr; |
| fTessellationExtensionString = nullptr; |
| fFBFetchColorName = nullptr; |
| fFBFetchExtensionString = nullptr; |
| fMaxFragmentSamplers = 0; |
| fMaxTessellationSegments = 0; |
| fAdvBlendEqInteraction = kNotSupported_AdvBlendEqInteraction; |
| } |
| |
| #ifdef SK_ENABLE_DUMP_GPU |
| void GrShaderCaps::dumpJSON(SkJSONWriter* writer) const { |
| writer->beginObject(); |
| |
| writer->appendBool("Shader Derivative Support", fShaderDerivativeSupport); |
| writer->appendBool("Geometry Shader Support", fGeometryShaderSupport); |
| writer->appendBool("Geometry Shader Invocations Support", fGSInvocationsSupport); |
| writer->appendBool("Dst Read In Shader Support", fDstReadInShaderSupport); |
| writer->appendBool("Dual Source Blending Support", fDualSourceBlendingSupport); |
| writer->appendBool("Integer Support", fIntegerSupport); |
| writer->appendBool("Nonsquare Matrix Support", fNonsquareMatrixSupport); |
| |
| static const char* kAdvBlendEqInteractionStr[] = { |
| "Not Supported", |
| "Automatic", |
| "General Enable", |
| }; |
| static_assert(0 == kNotSupported_AdvBlendEqInteraction); |
| static_assert(1 == kAutomatic_AdvBlendEqInteraction); |
| static_assert(2 == kGeneralEnable_AdvBlendEqInteraction); |
| static_assert(SK_ARRAY_COUNT(kAdvBlendEqInteractionStr) == kLast_AdvBlendEqInteraction + 1); |
| |
| writer->appendBool("FB Fetch Support", fFBFetchSupport); |
| writer->appendBool("Uses precision modifiers", fUsesPrecisionModifiers); |
| writer->appendBool("Can use any() function", fCanUseAnyFunctionInShader); |
| writer->appendBool("Can use min() and abs() together", fCanUseMinAndAbsTogether); |
| writer->appendBool("Can use fract() for negative values", fCanUseFractForNegativeValues); |
| writer->appendBool("Must force negated atan param to float", fMustForceNegatedAtanParamToFloat); |
| writer->appendBool("Must force negated ldexp param to multiply", |
| fMustForceNegatedLdexpParamToMultiply); |
| writer->appendBool("Must do op between floor and abs", fMustDoOpBetweenFloorAndAbs); |
| writer->appendBool("Must use local out color for FBFetch", fRequiresLocalOutputColorForFBFetch); |
| writer->appendBool("Must obfuscate uniform color", fMustObfuscateUniformColor); |
| writer->appendBool("Must guard division even after explicit zero check", |
| fMustGuardDivisionEvenAfterExplicitZeroCheck); |
| writer->appendBool( |
| "src-in and dst-in blend modes may return (0,0,0,1) when dst/src is all zeros", |
| fInBlendModesFailRandomlyForAllZeroVec); |
| writer->appendBool("Can use gl_FragCoord", fCanUseFragCoord); |
| writer->appendBool("Incomplete short int precision", fIncompleteShortIntPrecision); |
| writer->appendBool("Add and true to loops workaround", fAddAndTrueToLoopCondition); |
| writer->appendBool("Unfold short circuit as ternary", fUnfoldShortCircuitAsTernary); |
| writer->appendBool("Emulate abs(int) function", fEmulateAbsIntFunction); |
| writer->appendBool("Rewrite do while loops", fRewriteDoWhileLoops); |
| writer->appendBool("Rewrite pow with constant exponent", fRemovePowWithConstantExponent); |
| writer->appendBool("Must write to sk_FragColor [workaround]", fMustWriteToFragColor); |
| writer->appendBool("Don't add default precision statement for samplerExternalOES", |
| fNoDefaultPrecisionForExternalSamplers); |
| writer->appendBool("Rewrite matrix-vector multiply", fRewriteMatrixVectorMultiply); |
| writer->appendBool("Rewrite matrix equality comparisons", fRewriteMatrixComparisons); |
| writer->appendBool("Flat interpolation support", fFlatInterpolationSupport); |
| writer->appendBool("Prefer flat interpolation", fPreferFlatInterpolation); |
| writer->appendBool("No perspective interpolation support", fNoPerspectiveInterpolationSupport); |
| writer->appendBool("Sample mask support", fSampleMaskSupport); |
| writer->appendBool("External texture support", fExternalTextureSupport); |
| writer->appendBool("sk_VertexID support", fVertexIDSupport); |
| writer->appendBool("Bit manipulation support", fBitManipulationSupport); |
| writer->appendBool("float == fp32", fFloatIs32Bits); |
| writer->appendBool("half == fp32", fHalfIs32Bits); |
| writer->appendBool("Has poor fragment precision", fHasLowFragmentPrecision); |
| writer->appendBool("Color space math needs float", fColorSpaceMathNeedsFloat); |
| writer->appendBool("Builtin fma() support", fBuiltinFMASupport); |
| writer->appendBool("Builtin determinant() support", fBuiltinDeterminantSupport); |
| writer->appendBool("Can use do-while loops", fCanUseDoLoops); |
| writer->appendBool("Use node pools", fUseNodePools); |
| |
| writer->appendS32("Max FS Samplers", fMaxFragmentSamplers); |
| writer->appendS32("Max Tessellation Segments", fMaxTessellationSegments); |
| writer->appendString("Advanced blend equation interaction", |
| kAdvBlendEqInteractionStr[fAdvBlendEqInteraction]); |
| |
| writer->endObject(); |
| } |
| #else |
| void GrShaderCaps::dumpJSON(SkJSONWriter* writer) const { } |
| #endif |
| |
| void GrShaderCaps::applyOptionsOverrides(const GrContextOptions& options) { |
| if (options.fDisableDriverCorrectnessWorkarounds) { |
| SkASSERT(fCanUseAnyFunctionInShader); |
| SkASSERT(fCanUseMinAndAbsTogether); |
| SkASSERT(fCanUseFractForNegativeValues); |
| SkASSERT(!fMustForceNegatedAtanParamToFloat); |
| SkASSERT(!fMustForceNegatedLdexpParamToMultiply); |
| SkASSERT(!fAtan2ImplementedAsAtanYOverX); |
| SkASSERT(!fMustDoOpBetweenFloorAndAbs); |
| SkASSERT(!fRequiresLocalOutputColorForFBFetch); |
| SkASSERT(!fMustObfuscateUniformColor); |
| SkASSERT(!fMustGuardDivisionEvenAfterExplicitZeroCheck); |
| SkASSERT(!fInBlendModesFailRandomlyForAllZeroVec); |
| SkASSERT(fCanUseFragCoord); |
| SkASSERT(!fIncompleteShortIntPrecision); |
| SkASSERT(!fAddAndTrueToLoopCondition); |
| SkASSERT(!fUnfoldShortCircuitAsTernary); |
| SkASSERT(!fEmulateAbsIntFunction); |
| SkASSERT(!fRewriteDoWhileLoops); |
| SkASSERT(!fRemovePowWithConstantExponent); |
| SkASSERT(!fMustWriteToFragColor); |
| SkASSERT(!fNoDefaultPrecisionForExternalSamplers); |
| SkASSERT(!fRewriteMatrixVectorMultiply); |
| SkASSERT(!fRewriteMatrixComparisons); |
| } |
| if (!options.fEnableExperimentalHardwareTessellation) { |
| fMaxTessellationSegments = 0; |
| } |
| if (options.fReducedShaderVariations) { |
| fReducedShaderMode = true; |
| } |
| #if GR_TEST_UTILS |
| if (options.fSuppressDualSourceBlending) { |
| fDualSourceBlendingSupport = false; |
| } |
| if (options.fSuppressFramebufferFetch) { |
| fFBFetchSupport = false; |
| } |
| if (options.fSuppressGeometryShaders) { |
| fGeometryShaderSupport = false; |
| } |
| if (options.fMaxTessellationSegmentsOverride > 0) { |
| fMaxTessellationSegments = std::min(options.fMaxTessellationSegmentsOverride, |
| fMaxTessellationSegments); |
| } |
| #endif |
| } |