SkSL::ShaderCaps Struct Reference

#include <SkSLUtil.h>

Inheritance diagram for SkSL::ShaderCaps:

Public Types
enum	AdvBlendEqInteraction { kNotSupported_AdvBlendEqInteraction , kAutomatic_AdvBlendEqInteraction , kGeneralEnable_AdvBlendEqInteraction , kLast_AdvBlendEqInteraction = kGeneralEnable_AdvBlendEqInteraction }

Public Member Functions
bool	mustEnableAdvBlendEqs () const
bool	mustDeclareFragmentShaderOutput () const
const char *	shaderDerivativeExtensionString () const
const char *	externalTextureExtensionString () const
const char *	secondExternalTextureExtensionString () const
SkSL::Version	supportedSkSLVerion () const
bool	supportsDistanceFieldText () const

Public Attributes
SkSL::GLSLGeneration	fGLSLGeneration = SkSL::GLSLGeneration::k330
bool	fDualSourceBlendingSupport = false
bool	fShaderDerivativeSupport = false
bool	fExplicitTextureLodSupport = false
bool	fIntegerSupport = false
bool	fNonsquareMatrixSupport = false
bool	fInverseHyperbolicSupport = false
bool	fFBFetchSupport = false
bool	fFBFetchNeedsCustomOutput = false
bool	fUsesPrecisionModifiers = false
bool	fFlatInterpolationSupport = false
bool	fNoPerspectiveInterpolationSupport = false
bool	fSampleMaskSupport = false
bool	fExternalTextureSupport = false
bool	fFloatIs32Bits = true
bool	fInfinitySupport = false
bool	fBuiltinFMASupport = true
bool	fBuiltinDeterminantSupport = true
bool	fCanUseVoidInSequenceExpressions = true
bool	fCanUseMinAndAbsTogether = true
bool	fCanUseFractForNegativeValues = true
bool	fMustForceNegatedAtanParamToFloat = false
bool	fMustForceNegatedLdexpParamToMultiply = false
bool	fAtan2ImplementedAsAtanYOverX = false
bool	fMustDoOpBetweenFloorAndAbs = false
bool	fMustGuardDivisionEvenAfterExplicitZeroCheck = false
bool	fCanUseFragCoord = true
bool	fAddAndTrueToLoopCondition = false
bool	fUnfoldShortCircuitAsTernary = false
bool	fEmulateAbsIntFunction = false
bool	fRewriteDoWhileLoops = false
bool	fRewriteSwitchStatements = false
bool	fRemovePowWithConstantExponent = false
bool	fNoDefaultPrecisionForExternalSamplers = false
bool	fRewriteMatrixVectorMultiply = false
bool	fRewriteMatrixComparisons = false
bool	fRemoveConstFromFunctionParameters = false
bool	fPerlinNoiseRoundingFix = false
bool	fMustDeclareFragmentFrontFacing = false
const char *	fVersionDeclString = ""
const char *	fShaderDerivativeExtensionString = nullptr
const char *	fExternalTextureExtensionString = nullptr
const char *	fSecondExternalTextureExtensionString = nullptr
const char *	fFBFetchColorName = nullptr
const char *	fFloatBufferArrayName = nullptr
AdvBlendEqInteraction	fAdvBlendEqInteraction = kNotSupported_AdvBlendEqInteraction

Detailed Description

Definition at line 26 of file SkSLUtil.h.

Member Enumeration Documentation

AdvBlendEqInteraction

enum SkSL::ShaderCaps::AdvBlendEqInteraction

Indicates how GLSL must interact with advanced blend equations. The KHR extension requires special layout qualifiers in the fragment shader.

Enumerator
kNotSupported_AdvBlendEqInteraction
kAutomatic_AdvBlendEqInteraction
kGeneralEnable_AdvBlendEqInteraction
kLast_AdvBlendEqInteraction

Definition at line 31 of file SkSLUtil.h.

                               {
        kNotSupported_AdvBlendEqInteraction,     //<! No _blend_equation_advanced extension
        kAutomatic_AdvBlendEqInteraction,        //<! No interaction required
        kGeneralEnable_AdvBlendEqInteraction,    //<! layout(blend_support_all_equations) out
 
        kLast_AdvBlendEqInteraction = kGeneralEnable_AdvBlendEqInteraction
    };

Member Function Documentation

externalTextureExtensionString()

const char * SkSL::ShaderCaps::externalTextureExtensionString ( ) const

inline

Definition at line 59 of file SkSLUtil.h.

                                                       {
        SkASSERT(this->fExternalTextureSupport);
        return fExternalTextureExtensionString;
    }

mustDeclareFragmentShaderOutput()

bool SkSL::ShaderCaps::mustDeclareFragmentShaderOutput ( ) const

inline

Definition at line 43 of file SkSLUtil.h.

                                                 {
        return fGLSLGeneration > SkSL::GLSLGeneration::k110;
    }

mustEnableAdvBlendEqs()

bool SkSL::ShaderCaps::mustEnableAdvBlendEqs ( ) const

inline

Definition at line 39 of file SkSLUtil.h.

                                       {
        return fAdvBlendEqInteraction >= kGeneralEnable_AdvBlendEqInteraction;
    }

secondExternalTextureExtensionString()

const char * SkSL::ShaderCaps::secondExternalTextureExtensionString ( ) const

inline

Definition at line 64 of file SkSLUtil.h.

                                                             {
        SkASSERT(this->fExternalTextureSupport);
        return fSecondExternalTextureExtensionString;
    }

shaderDerivativeExtensionString()

const char * SkSL::ShaderCaps::shaderDerivativeExtensionString ( ) const

inline

Definition at line 50 of file SkSLUtil.h.

                                                        {
        SkASSERT(this->fShaderDerivativeSupport);
        return fShaderDerivativeExtensionString;
    }

supportedSkSLVerion()

SkSL::Version SkSL::ShaderCaps::supportedSkSLVerion ( ) const

inline

SkSL 300 requires support for derivatives, nonsquare matrices and bitwise integer operations.

Definition at line 72 of file SkSLUtil.h.

                                            {
        if (fShaderDerivativeSupport && fNonsquareMatrixSupport && fIntegerSupport &&
            fGLSLGeneration >= SkSL::GLSLGeneration::k330) {
            return SkSL::Version::k300;
        }
        return SkSL::Version::k100;
    }

supportsDistanceFieldText()

bool SkSL::ShaderCaps::supportsDistanceFieldText ( ) const

inline

Definition at line 80 of file SkSLUtil.h.

{ return fShaderDerivativeSupport; }

Member Data Documentation

fAddAndTrueToLoopCondition

bool SkSL::ShaderCaps::fAddAndTrueToLoopCondition = false

Definition at line 127 of file SkSLUtil.h.

fAdvBlendEqInteraction

AdvBlendEqInteraction SkSL::ShaderCaps::fAdvBlendEqInteraction = kNotSupported_AdvBlendEqInteraction

Definition at line 162 of file SkSLUtil.h.

fAtan2ImplementedAsAtanYOverX

bool SkSL::ShaderCaps::fAtan2ImplementedAsAtanYOverX = false

Definition at line 116 of file SkSLUtil.h.

fBuiltinDeterminantSupport

bool SkSL::ShaderCaps::fBuiltinDeterminantSupport = true

Definition at line 107 of file SkSLUtil.h.

fBuiltinFMASupport

bool SkSL::ShaderCaps::fBuiltinFMASupport = true

Definition at line 106 of file SkSLUtil.h.

fCanUseFractForNegativeValues

bool SkSL::ShaderCaps::fCanUseFractForNegativeValues = true

Definition at line 112 of file SkSLUtil.h.

fCanUseFragCoord

bool SkSL::ShaderCaps::fCanUseFragCoord = true

Definition at line 125 of file SkSLUtil.h.

fCanUseMinAndAbsTogether

bool SkSL::ShaderCaps::fCanUseMinAndAbsTogether = true

Definition at line 111 of file SkSLUtil.h.

fCanUseVoidInSequenceExpressions

bool SkSL::ShaderCaps::fCanUseVoidInSequenceExpressions = true

Definition at line 110 of file SkSLUtil.h.

fDualSourceBlendingSupport

bool SkSL::ShaderCaps::fDualSourceBlendingSupport = false

Definition at line 84 of file SkSLUtil.h.

fEmulateAbsIntFunction

bool SkSL::ShaderCaps::fEmulateAbsIntFunction = false

Definition at line 131 of file SkSLUtil.h.

fExplicitTextureLodSupport

bool SkSL::ShaderCaps::fExplicitTextureLodSupport = false

Enables sampleGrad and sampleLod functions that don't rely on implicit derivatives

Definition at line 87 of file SkSLUtil.h.

fExternalTextureExtensionString

const char* SkSL::ShaderCaps::fExternalTextureExtensionString = nullptr

Definition at line 156 of file SkSLUtil.h.

fExternalTextureSupport

bool SkSL::ShaderCaps::fExternalTextureSupport = false

Definition at line 99 of file SkSLUtil.h.

fFBFetchColorName

const char* SkSL::ShaderCaps::fFBFetchColorName = nullptr

Definition at line 158 of file SkSLUtil.h.

fFBFetchNeedsCustomOutput

bool SkSL::ShaderCaps::fFBFetchNeedsCustomOutput = false

Definition at line 94 of file SkSLUtil.h.

fFBFetchSupport

bool SkSL::ShaderCaps::fFBFetchSupport = false

Definition at line 93 of file SkSLUtil.h.

fFlatInterpolationSupport

bool SkSL::ShaderCaps::fFlatInterpolationSupport = false

Definition at line 96 of file SkSLUtil.h.

fFloatBufferArrayName

const char* SkSL::ShaderCaps::fFloatBufferArrayName = nullptr

Definition at line 160 of file SkSLUtil.h.

fFloatIs32Bits

bool SkSL::ShaderCaps::fFloatIs32Bits = true

Definition at line 100 of file SkSLUtil.h.

fGLSLGeneration

SkSL::GLSLGeneration SkSL::ShaderCaps::fGLSLGeneration = SkSL::GLSLGeneration::k330

Definition at line 82 of file SkSLUtil.h.

fInfinitySupport

bool SkSL::ShaderCaps::fInfinitySupport = false

Definition at line 103 of file SkSLUtil.h.

fIntegerSupport

bool SkSL::ShaderCaps::fIntegerSupport = false

Indicates true 32-bit integer support, with unsigned types and bitwise operations

Definition at line 89 of file SkSLUtil.h.

fInverseHyperbolicSupport

bool SkSL::ShaderCaps::fInverseHyperbolicSupport = false

asinh(), acosh(), atanh()

Definition at line 92 of file SkSLUtil.h.

fMustDeclareFragmentFrontFacing

bool SkSL::ShaderCaps::fMustDeclareFragmentFrontFacing = false

Definition at line 151 of file SkSLUtil.h.

fMustDoOpBetweenFloorAndAbs

bool SkSL::ShaderCaps::fMustDoOpBetweenFloorAndAbs = false

Definition at line 120 of file SkSLUtil.h.

fMustForceNegatedAtanParamToFloat

bool SkSL::ShaderCaps::fMustForceNegatedAtanParamToFloat = false

Definition at line 113 of file SkSLUtil.h.

fMustForceNegatedLdexpParamToMultiply

bool SkSL::ShaderCaps::fMustForceNegatedLdexpParamToMultiply = false

Definition at line 114 of file SkSLUtil.h.

fMustGuardDivisionEvenAfterExplicitZeroCheck

bool SkSL::ShaderCaps::fMustGuardDivisionEvenAfterExplicitZeroCheck = false

Definition at line 123 of file SkSLUtil.h.

fNoDefaultPrecisionForExternalSamplers

bool SkSL::ShaderCaps::fNoDefaultPrecisionForExternalSamplers = false

Definition at line 137 of file SkSLUtil.h.

fNonsquareMatrixSupport

bool SkSL::ShaderCaps::fNonsquareMatrixSupport = false

Definition at line 90 of file SkSLUtil.h.

fNoPerspectiveInterpolationSupport

bool SkSL::ShaderCaps::fNoPerspectiveInterpolationSupport = false

Definition at line 97 of file SkSLUtil.h.

fPerlinNoiseRoundingFix

bool SkSL::ShaderCaps::fPerlinNoiseRoundingFix = false

Definition at line 147 of file SkSLUtil.h.

fRemoveConstFromFunctionParameters

bool SkSL::ShaderCaps::fRemoveConstFromFunctionParameters = false

Definition at line 144 of file SkSLUtil.h.

fRemovePowWithConstantExponent

bool SkSL::ShaderCaps::fRemovePowWithConstantExponent = false

Definition at line 134 of file SkSLUtil.h.

fRewriteDoWhileLoops

bool SkSL::ShaderCaps::fRewriteDoWhileLoops = false

Definition at line 132 of file SkSLUtil.h.

fRewriteMatrixComparisons

bool SkSL::ShaderCaps::fRewriteMatrixComparisons = false

Definition at line 142 of file SkSLUtil.h.

fRewriteMatrixVectorMultiply

bool SkSL::ShaderCaps::fRewriteMatrixVectorMultiply = false

Definition at line 140 of file SkSLUtil.h.

fRewriteSwitchStatements

bool SkSL::ShaderCaps::fRewriteSwitchStatements = false

Definition at line 133 of file SkSLUtil.h.

fSampleMaskSupport

bool SkSL::ShaderCaps::fSampleMaskSupport = false

Definition at line 98 of file SkSLUtil.h.

fSecondExternalTextureExtensionString

const char* SkSL::ShaderCaps::fSecondExternalTextureExtensionString = nullptr

Definition at line 157 of file SkSLUtil.h.

fShaderDerivativeExtensionString

const char* SkSL::ShaderCaps::fShaderDerivativeExtensionString = nullptr

Definition at line 155 of file SkSLUtil.h.

fShaderDerivativeSupport

bool SkSL::ShaderCaps::fShaderDerivativeSupport = false

Definition at line 85 of file SkSLUtil.h.

fUnfoldShortCircuitAsTernary

bool SkSL::ShaderCaps::fUnfoldShortCircuitAsTernary = false

Definition at line 130 of file SkSLUtil.h.

fUsesPrecisionModifiers

bool SkSL::ShaderCaps::fUsesPrecisionModifiers = false

Definition at line 95 of file SkSLUtil.h.

fVersionDeclString

const char* SkSL::ShaderCaps::fVersionDeclString = ""

Definition at line 153 of file SkSLUtil.h.

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The documentation for this struct was generated from the following file:

• third_party/skia/src/sksl/SkSLUtil.h