| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkSLSPIRVCodeGenerator.h" |
| |
| #include "string.h" |
| |
| #include "GLSL.std.450.h" |
| |
| #include "ir/SkSLExpressionStatement.h" |
| #include "ir/SkSLExtension.h" |
| #include "ir/SkSLIndexExpression.h" |
| #include "ir/SkSLVariableReference.h" |
| #include "SkSLCompiler.h" |
| |
| namespace SkSL { |
| |
| #define SPIRV_DEBUG 0 |
| |
| static const int32_t SKSL_MAGIC = 0x0; // FIXME: we should probably register a magic number |
| |
| void SPIRVCodeGenerator::setupIntrinsics() { |
| #define ALL_GLSL(x) std::make_tuple(kGLSL_STD_450_IntrinsicKind, GLSLstd450 ## x, GLSLstd450 ## x, \ |
| GLSLstd450 ## x, GLSLstd450 ## x) |
| #define BY_TYPE_GLSL(ifFloat, ifInt, ifUInt) std::make_tuple(kGLSL_STD_450_IntrinsicKind, \ |
| GLSLstd450 ## ifFloat, \ |
| GLSLstd450 ## ifInt, \ |
| GLSLstd450 ## ifUInt, \ |
| SpvOpUndef) |
| #define SPECIAL(x) std::make_tuple(kSpecial_IntrinsicKind, k ## x ## _SpecialIntrinsic, \ |
| k ## x ## _SpecialIntrinsic, k ## x ## _SpecialIntrinsic, \ |
| k ## x ## _SpecialIntrinsic) |
| fIntrinsicMap[SkString("round")] = ALL_GLSL(Round); |
| fIntrinsicMap[SkString("roundEven")] = ALL_GLSL(RoundEven); |
| fIntrinsicMap[SkString("trunc")] = ALL_GLSL(Trunc); |
| fIntrinsicMap[SkString("abs")] = BY_TYPE_GLSL(FAbs, SAbs, SAbs); |
| fIntrinsicMap[SkString("sign")] = BY_TYPE_GLSL(FSign, SSign, SSign); |
| fIntrinsicMap[SkString("floor")] = ALL_GLSL(Floor); |
| fIntrinsicMap[SkString("ceil")] = ALL_GLSL(Ceil); |
| fIntrinsicMap[SkString("fract")] = ALL_GLSL(Fract); |
| fIntrinsicMap[SkString("radians")] = ALL_GLSL(Radians); |
| fIntrinsicMap[SkString("degrees")] = ALL_GLSL(Degrees); |
| fIntrinsicMap[SkString("sin")] = ALL_GLSL(Sin); |
| fIntrinsicMap[SkString("cos")] = ALL_GLSL(Cos); |
| fIntrinsicMap[SkString("tan")] = ALL_GLSL(Tan); |
| fIntrinsicMap[SkString("asin")] = ALL_GLSL(Asin); |
| fIntrinsicMap[SkString("acos")] = ALL_GLSL(Acos); |
| fIntrinsicMap[SkString("atan")] = SPECIAL(Atan); |
| fIntrinsicMap[SkString("sinh")] = ALL_GLSL(Sinh); |
| fIntrinsicMap[SkString("cosh")] = ALL_GLSL(Cosh); |
| fIntrinsicMap[SkString("tanh")] = ALL_GLSL(Tanh); |
| fIntrinsicMap[SkString("asinh")] = ALL_GLSL(Asinh); |
| fIntrinsicMap[SkString("acosh")] = ALL_GLSL(Acosh); |
| fIntrinsicMap[SkString("atanh")] = ALL_GLSL(Atanh); |
| fIntrinsicMap[SkString("pow")] = ALL_GLSL(Pow); |
| fIntrinsicMap[SkString("exp")] = ALL_GLSL(Exp); |
| fIntrinsicMap[SkString("log")] = ALL_GLSL(Log); |
| fIntrinsicMap[SkString("exp2")] = ALL_GLSL(Exp2); |
| fIntrinsicMap[SkString("log2")] = ALL_GLSL(Log2); |
| fIntrinsicMap[SkString("sqrt")] = ALL_GLSL(Sqrt); |
| fIntrinsicMap[SkString("inversesqrt")] = ALL_GLSL(InverseSqrt); |
| fIntrinsicMap[SkString("determinant")] = ALL_GLSL(Determinant); |
| fIntrinsicMap[SkString("matrixInverse")] = ALL_GLSL(MatrixInverse); |
| fIntrinsicMap[SkString("mod")] = std::make_tuple(kSPIRV_IntrinsicKind, SpvOpFMod, |
| SpvOpSMod, SpvOpUMod, SpvOpUndef); |
| fIntrinsicMap[SkString("min")] = BY_TYPE_GLSL(FMin, SMin, UMin); |
| fIntrinsicMap[SkString("max")] = BY_TYPE_GLSL(FMax, SMax, UMax); |
| fIntrinsicMap[SkString("clamp")] = BY_TYPE_GLSL(FClamp, SClamp, UClamp); |
| fIntrinsicMap[SkString("dot")] = std::make_tuple(kSPIRV_IntrinsicKind, SpvOpDot, |
| SpvOpUndef, SpvOpUndef, SpvOpUndef); |
| fIntrinsicMap[SkString("mix")] = ALL_GLSL(FMix); |
| fIntrinsicMap[SkString("step")] = ALL_GLSL(Step); |
| fIntrinsicMap[SkString("smoothstep")] = ALL_GLSL(SmoothStep); |
| fIntrinsicMap[SkString("fma")] = ALL_GLSL(Fma); |
| fIntrinsicMap[SkString("frexp")] = ALL_GLSL(Frexp); |
| fIntrinsicMap[SkString("ldexp")] = ALL_GLSL(Ldexp); |
| |
| #define PACK(type) fIntrinsicMap[SkString("pack" #type)] = ALL_GLSL(Pack ## type); \ |
| fIntrinsicMap[SkString("unpack" #type)] = ALL_GLSL(Unpack ## type) |
| PACK(Snorm4x8); |
| PACK(Unorm4x8); |
| PACK(Snorm2x16); |
| PACK(Unorm2x16); |
| PACK(Half2x16); |
| PACK(Double2x32); |
| fIntrinsicMap[SkString("length")] = ALL_GLSL(Length); |
| fIntrinsicMap[SkString("distance")] = ALL_GLSL(Distance); |
| fIntrinsicMap[SkString("cross")] = ALL_GLSL(Cross); |
| fIntrinsicMap[SkString("normalize")] = ALL_GLSL(Normalize); |
| fIntrinsicMap[SkString("faceForward")] = ALL_GLSL(FaceForward); |
| fIntrinsicMap[SkString("reflect")] = ALL_GLSL(Reflect); |
| fIntrinsicMap[SkString("refract")] = ALL_GLSL(Refract); |
| fIntrinsicMap[SkString("findLSB")] = ALL_GLSL(FindILsb); |
| fIntrinsicMap[SkString("findMSB")] = BY_TYPE_GLSL(FindSMsb, FindSMsb, FindUMsb); |
| fIntrinsicMap[SkString("dFdx")] = std::make_tuple(kSPIRV_IntrinsicKind, SpvOpDPdx, |
| SpvOpUndef, SpvOpUndef, SpvOpUndef); |
| fIntrinsicMap[SkString("dFdy")] = std::make_tuple(kSPIRV_IntrinsicKind, SpvOpDPdy, |
| SpvOpUndef, SpvOpUndef, SpvOpUndef); |
| fIntrinsicMap[SkString("dFdy")] = std::make_tuple(kSPIRV_IntrinsicKind, SpvOpDPdy, |
| SpvOpUndef, SpvOpUndef, SpvOpUndef); |
| fIntrinsicMap[SkString("texture")] = SPECIAL(Texture); |
| |
| fIntrinsicMap[SkString("subpassLoad")] = SPECIAL(SubpassLoad); |
| |
| fIntrinsicMap[SkString("any")] = std::make_tuple(kSPIRV_IntrinsicKind, SpvOpUndef, |
| SpvOpUndef, SpvOpUndef, SpvOpAny); |
| fIntrinsicMap[SkString("all")] = std::make_tuple(kSPIRV_IntrinsicKind, SpvOpUndef, |
| SpvOpUndef, SpvOpUndef, SpvOpAll); |
| fIntrinsicMap[SkString("equal")] = std::make_tuple(kSPIRV_IntrinsicKind, |
| SpvOpFOrdEqual, SpvOpIEqual, |
| SpvOpIEqual, SpvOpLogicalEqual); |
| fIntrinsicMap[SkString("notEqual")] = std::make_tuple(kSPIRV_IntrinsicKind, |
| SpvOpFOrdNotEqual, SpvOpINotEqual, |
| SpvOpINotEqual, |
| SpvOpLogicalNotEqual); |
| fIntrinsicMap[SkString("lessThan")] = std::make_tuple(kSPIRV_IntrinsicKind, |
| SpvOpSLessThan, SpvOpULessThan, |
| SpvOpFOrdLessThan, SpvOpUndef); |
| fIntrinsicMap[SkString("lessThanEqual")] = std::make_tuple(kSPIRV_IntrinsicKind, |
| SpvOpSLessThanEqual, |
| SpvOpULessThanEqual, |
| SpvOpFOrdLessThanEqual, |
| SpvOpUndef); |
| fIntrinsicMap[SkString("greaterThan")] = std::make_tuple(kSPIRV_IntrinsicKind, |
| SpvOpSGreaterThan, |
| SpvOpUGreaterThan, |
| SpvOpFOrdGreaterThan, |
| SpvOpUndef); |
| fIntrinsicMap[SkString("greaterThanEqual")] = std::make_tuple(kSPIRV_IntrinsicKind, |
| SpvOpSGreaterThanEqual, |
| SpvOpUGreaterThanEqual, |
| SpvOpFOrdGreaterThanEqual, |
| SpvOpUndef); |
| |
| // interpolateAt* not yet supported... |
| } |
| |
| void SPIRVCodeGenerator::writeWord(int32_t word, SkWStream& out) { |
| #if SPIRV_DEBUG |
| out << "(" << word << ") "; |
| #else |
| out.write((const char*) &word, sizeof(word)); |
| #endif |
| } |
| |
| static bool is_float(const Context& context, const Type& type) { |
| if (type.kind() == Type::kVector_Kind) { |
| return is_float(context, type.componentType()); |
| } |
| return type == *context.fFloat_Type || type == *context.fDouble_Type; |
| } |
| |
| static bool is_signed(const Context& context, const Type& type) { |
| if (type.kind() == Type::kVector_Kind) { |
| return is_signed(context, type.componentType()); |
| } |
| return type == *context.fInt_Type; |
| } |
| |
| static bool is_unsigned(const Context& context, const Type& type) { |
| if (type.kind() == Type::kVector_Kind) { |
| return is_unsigned(context, type.componentType()); |
| } |
| return type == *context.fUInt_Type; |
| } |
| |
| static bool is_bool(const Context& context, const Type& type) { |
| if (type.kind() == Type::kVector_Kind) { |
| return is_bool(context, type.componentType()); |
| } |
| return type == *context.fBool_Type; |
| } |
| |
| static bool is_out(const Variable& var) { |
| return (var.fModifiers.fFlags & Modifiers::kOut_Flag) != 0; |
| } |
| |
| #if SPIRV_DEBUG |
| static SkString opcode_text(SpvOp_ opCode) { |
| switch (opCode) { |
| case SpvOpNop: |
| return SkString("Nop"); |
| case SpvOpUndef: |
| return SkString("Undef"); |
| case SpvOpSourceContinued: |
| return SkString("SourceContinued"); |
| case SpvOpSource: |
| return SkString("Source"); |
| case SpvOpSourceExtension: |
| return SkString("SourceExtension"); |
| case SpvOpName: |
| return SkString("Name"); |
| case SpvOpMemberName: |
| return SkString("MemberName"); |
| case SpvOpString: |
| return SkString("String"); |
| case SpvOpLine: |
| return SkString("Line"); |
| case SpvOpExtension: |
| return SkString("Extension"); |
| case SpvOpExtInstImport: |
| return SkString("ExtInstImport"); |
| case SpvOpExtInst: |
| return SkString("ExtInst"); |
| case SpvOpMemoryModel: |
| return SkString("MemoryModel"); |
| case SpvOpEntryPoint: |
| return SkString("EntryPoint"); |
| case SpvOpExecutionMode: |
| return SkString("ExecutionMode"); |
| case SpvOpCapability: |
| return SkString("Capability"); |
| case SpvOpTypeVoid: |
| return SkString("TypeVoid"); |
| case SpvOpTypeBool: |
| return SkString("TypeBool"); |
| case SpvOpTypeInt: |
| return SkString("TypeInt"); |
| case SpvOpTypeFloat: |
| return SkString("TypeFloat"); |
| case SpvOpTypeVector: |
| return SkString("TypeVector"); |
| case SpvOpTypeMatrix: |
| return SkString("TypeMatrix"); |
| case SpvOpTypeImage: |
| return SkString("TypeImage"); |
| case SpvOpTypeSampler: |
| return SkString("TypeSampler"); |
| case SpvOpTypeSampledImage: |
| return SkString("TypeSampledImage"); |
| case SpvOpTypeArray: |
| return SkString("TypeArray"); |
| case SpvOpTypeRuntimeArray: |
| return SkString("TypeRuntimeArray"); |
| case SpvOpTypeStruct: |
| return SkString("TypeStruct"); |
| case SpvOpTypeOpaque: |
| return SkString("TypeOpaque"); |
| case SpvOpTypePointer: |
| return SkString("TypePointer"); |
| case SpvOpTypeFunction: |
| return SkString("TypeFunction"); |
| case SpvOpTypeEvent: |
| return SkString("TypeEvent"); |
| case SpvOpTypeDeviceEvent: |
| return SkString("TypeDeviceEvent"); |
| case SpvOpTypeReserveId: |
| return SkString("TypeReserveId"); |
| case SpvOpTypeQueue: |
| return SkString("TypeQueue"); |
| case SpvOpTypePipe: |
| return SkString("TypePipe"); |
| case SpvOpTypeForwardPointer: |
| return SkString("TypeForwardPointer"); |
| case SpvOpConstantTrue: |
| return SkString("ConstantTrue"); |
| case SpvOpConstantFalse: |
| return SkString("ConstantFalse"); |
| case SpvOpConstant: |
| return SkString("Constant"); |
| case SpvOpConstantComposite: |
| return SkString("ConstantComposite"); |
| case SpvOpConstantSampler: |
| return SkString("ConstantSampler"); |
| case SpvOpConstantNull: |
| return SkString("ConstantNull"); |
| case SpvOpSpecConstantTrue: |
| return SkString("SpecConstantTrue"); |
| case SpvOpSpecConstantFalse: |
| return SkString("SpecConstantFalse"); |
| case SpvOpSpecConstant: |
| return SkString("SpecConstant"); |
| case SpvOpSpecConstantComposite: |
| return SkString("SpecConstantComposite"); |
| case SpvOpSpecConstantOp: |
| return SkString("SpecConstantOp"); |
| case SpvOpFunction: |
| return SkString("Function"); |
| case SpvOpFunctionParameter: |
| return SkString("FunctionParameter"); |
| case SpvOpFunctionEnd: |
| return SkString("FunctionEnd"); |
| case SpvOpFunctionCall: |
| return SkString("FunctionCall"); |
| case SpvOpVariable: |
| return SkString("Variable"); |
| case SpvOpImageTexelPointer: |
| return SkString("ImageTexelPointer"); |
| case SpvOpLoad: |
| return SkString("Load"); |
| case SpvOpStore: |
| return SkString("Store"); |
| case SpvOpCopyMemory: |
| return SkString("CopyMemory"); |
| case SpvOpCopyMemorySized: |
| return SkString("CopyMemorySized"); |
| case SpvOpAccessChain: |
| return SkString("AccessChain"); |
| case SpvOpInBoundsAccessChain: |
| return SkString("InBoundsAccessChain"); |
| case SpvOpPtrAccessChain: |
| return SkString("PtrAccessChain"); |
| case SpvOpArrayLength: |
| return SkString("ArrayLength"); |
| case SpvOpGenericPtrMemSemantics: |
| return SkString("GenericPtrMemSemantics"); |
| case SpvOpInBoundsPtrAccessChain: |
| return SkString("InBoundsPtrAccessChain"); |
| case SpvOpDecorate: |
| return SkString("Decorate"); |
| case SpvOpMemberDecorate: |
| return SkString("MemberDecorate"); |
| case SpvOpDecorationGroup: |
| return SkString("DecorationGroup"); |
| case SpvOpGroupDecorate: |
| return SkString("GroupDecorate"); |
| case SpvOpGroupMemberDecorate: |
| return SkString("GroupMemberDecorate"); |
| case SpvOpVectorExtractDynamic: |
| return SkString("VectorExtractDynamic"); |
| case SpvOpVectorInsertDynamic: |
| return SkString("VectorInsertDynamic"); |
| case SpvOpVectorShuffle: |
| return SkString("VectorShuffle"); |
| case SpvOpCompositeConstruct: |
| return SkString("CompositeConstruct"); |
| case SpvOpCompositeExtract: |
| return SkString("CompositeExtract"); |
| case SpvOpCompositeInsert: |
| return SkString("CompositeInsert"); |
| case SpvOpCopyObject: |
| return SkString("CopyObject"); |
| case SpvOpTranspose: |
| return SkString("Transpose"); |
| case SpvOpSampledImage: |
| return SkString("SampledImage"); |
| case SpvOpImageSampleImplicitLod: |
| return SkString("ImageSampleImplicitLod"); |
| case SpvOpImageSampleExplicitLod: |
| return SkString("ImageSampleExplicitLod"); |
| case SpvOpImageSampleDrefImplicitLod: |
| return SkString("ImageSampleDrefImplicitLod"); |
| case SpvOpImageSampleDrefExplicitLod: |
| return SkString("ImageSampleDrefExplicitLod"); |
| case SpvOpImageSampleProjImplicitLod: |
| return SkString("ImageSampleProjImplicitLod"); |
| case SpvOpImageSampleProjExplicitLod: |
| return SkString("ImageSampleProjExplicitLod"); |
| case SpvOpImageSampleProjDrefImplicitLod: |
| return SkString("ImageSampleProjDrefImplicitLod"); |
| case SpvOpImageSampleProjDrefExplicitLod: |
| return SkString("ImageSampleProjDrefExplicitLod"); |
| case SpvOpImageFetch: |
| return SkString("ImageFetch"); |
| case SpvOpImageGather: |
| return SkString("ImageGather"); |
| case SpvOpImageDrefGather: |
| return SkString("ImageDrefGather"); |
| case SpvOpImageRead: |
| return SkString("ImageRead"); |
| case SpvOpImageWrite: |
| return SkString("ImageWrite"); |
| case SpvOpImage: |
| return SkString("Image"); |
| case SpvOpImageQueryFormat: |
| return SkString("ImageQueryFormat"); |
| case SpvOpImageQueryOrder: |
| return SkString("ImageQueryOrder"); |
| case SpvOpImageQuerySizeLod: |
| return SkString("ImageQuerySizeLod"); |
| case SpvOpImageQuerySize: |
| return SkString("ImageQuerySize"); |
| case SpvOpImageQueryLod: |
| return SkString("ImageQueryLod"); |
| case SpvOpImageQueryLevels: |
| return SkString("ImageQueryLevels"); |
| case SpvOpImageQuerySamples: |
| return SkString("ImageQuerySamples"); |
| case SpvOpConvertFToU: |
| return SkString("ConvertFToU"); |
| case SpvOpConvertFToS: |
| return SkString("ConvertFToS"); |
| case SpvOpConvertSToF: |
| return SkString("ConvertSToF"); |
| case SpvOpConvertUToF: |
| return SkString("ConvertUToF"); |
| case SpvOpUConvert: |
| return SkString("UConvert"); |
| case SpvOpSConvert: |
| return SkString("SConvert"); |
| case SpvOpFConvert: |
| return SkString("FConvert"); |
| case SpvOpQuantizeToF16: |
| return SkString("QuantizeToF16"); |
| case SpvOpConvertPtrToU: |
| return SkString("ConvertPtrToU"); |
| case SpvOpSatConvertSToU: |
| return SkString("SatConvertSToU"); |
| case SpvOpSatConvertUToS: |
| return SkString("SatConvertUToS"); |
| case SpvOpConvertUToPtr: |
| return SkString("ConvertUToPtr"); |
| case SpvOpPtrCastToGeneric: |
| return SkString("PtrCastToGeneric"); |
| case SpvOpGenericCastToPtr: |
| return SkString("GenericCastToPtr"); |
| case SpvOpGenericCastToPtrExplicit: |
| return SkString("GenericCastToPtrExplicit"); |
| case SpvOpBitcast: |
| return SkString("Bitcast"); |
| case SpvOpSNegate: |
| return SkString("SNegate"); |
| case SpvOpFNegate: |
| return SkString("FNegate"); |
| case SpvOpIAdd: |
| return SkString("IAdd"); |
| case SpvOpFAdd: |
| return SkString("FAdd"); |
| case SpvOpISub: |
| return SkString("ISub"); |
| case SpvOpFSub: |
| return SkString("FSub"); |
| case SpvOpIMul: |
| return SkString("IMul"); |
| case SpvOpFMul: |
| return SkString("FMul"); |
| case SpvOpUDiv: |
| return SkString("UDiv"); |
| case SpvOpSDiv: |
| return SkString("SDiv"); |
| case SpvOpFDiv: |
| return SkString("FDiv"); |
| case SpvOpUMod: |
| return SkString("UMod"); |
| case SpvOpSRem: |
| return SkString("SRem"); |
| case SpvOpSMod: |
| return SkString("SMod"); |
| case SpvOpFRem: |
| return SkString("FRem"); |
| case SpvOpFMod: |
| return SkString("FMod"); |
| case SpvOpVectorTimesScalar: |
| return SkString("VectorTimesScalar"); |
| case SpvOpMatrixTimesScalar: |
| return SkString("MatrixTimesScalar"); |
| case SpvOpVectorTimesMatrix: |
| return SkString("VectorTimesMatrix"); |
| case SpvOpMatrixTimesVector: |
| return SkString("MatrixTimesVector"); |
| case SpvOpMatrixTimesMatrix: |
| return SkString("MatrixTimesMatrix"); |
| case SpvOpOuterProduct: |
| return SkString("OuterProduct"); |
| case SpvOpDot: |
| return SkString("Dot"); |
| case SpvOpIAddCarry: |
| return SkString("IAddCarry"); |
| case SpvOpISubBorrow: |
| return SkString("ISubBorrow"); |
| case SpvOpUMulExtended: |
| return SkString("UMulExtended"); |
| case SpvOpSMulExtended: |
| return SkString("SMulExtended"); |
| case SpvOpAny: |
| return SkString("Any"); |
| case SpvOpAll: |
| return SkString("All"); |
| case SpvOpIsNan: |
| return SkString("IsNan"); |
| case SpvOpIsInf: |
| return SkString("IsInf"); |
| case SpvOpIsFinite: |
| return SkString("IsFinite"); |
| case SpvOpIsNormal: |
| return SkString("IsNormal"); |
| case SpvOpSignBitSet: |
| return SkString("SignBitSet"); |
| case SpvOpLessOrGreater: |
| return SkString("LessOrGreater"); |
| case SpvOpOrdered: |
| return SkString("Ordered"); |
| case SpvOpUnordered: |
| return SkString("Unordered"); |
| case SpvOpLogicalEqual: |
| return SkString("LogicalEqual"); |
| case SpvOpLogicalNotEqual: |
| return SkString("LogicalNotEqual"); |
| case SpvOpLogicalOr: |
| return SkString("LogicalOr"); |
| case SpvOpLogicalAnd: |
| return SkString("LogicalAnd"); |
| case SpvOpLogicalNot: |
| return SkString("LogicalNot"); |
| case SpvOpSelect: |
| return SkString("Select"); |
| case SpvOpIEqual: |
| return SkString("IEqual"); |
| case SpvOpINotEqual: |
| return SkString("INotEqual"); |
| case SpvOpUGreaterThan: |
| return SkString("UGreaterThan"); |
| case SpvOpSGreaterThan: |
| return SkString("SGreaterThan"); |
| case SpvOpUGreaterThanEqual: |
| return SkString("UGreaterThanEqual"); |
| case SpvOpSGreaterThanEqual: |
| return SkString("SGreaterThanEqual"); |
| case SpvOpULessThan: |
| return SkString("ULessThan"); |
| case SpvOpSLessThan: |
| return SkString("SLessThan"); |
| case SpvOpULessThanEqual: |
| return SkString("ULessThanEqual"); |
| case SpvOpSLessThanEqual: |
| return SkString("SLessThanEqual"); |
| case SpvOpFOrdEqual: |
| return SkString("FOrdEqual"); |
| case SpvOpFUnordEqual: |
| return SkString("FUnordEqual"); |
| case SpvOpFOrdNotEqual: |
| return SkString("FOrdNotEqual"); |
| case SpvOpFUnordNotEqual: |
| return SkString("FUnordNotEqual"); |
| case SpvOpFOrdLessThan: |
| return SkString("FOrdLessThan"); |
| case SpvOpFUnordLessThan: |
| return SkString("FUnordLessThan"); |
| case SpvOpFOrdGreaterThan: |
| return SkString("FOrdGreaterThan"); |
| case SpvOpFUnordGreaterThan: |
| return SkString("FUnordGreaterThan"); |
| case SpvOpFOrdLessThanEqual: |
| return SkString("FOrdLessThanEqual"); |
| case SpvOpFUnordLessThanEqual: |
| return SkString("FUnordLessThanEqual"); |
| case SpvOpFOrdGreaterThanEqual: |
| return SkString("FOrdGreaterThanEqual"); |
| case SpvOpFUnordGreaterThanEqual: |
| return SkString("FUnordGreaterThanEqual"); |
| case SpvOpShiftRightLogical: |
| return SkString("ShiftRightLogical"); |
| case SpvOpShiftRightArithmetic: |
| return SkString("ShiftRightArithmetic"); |
| case SpvOpShiftLeftLogical: |
| return SkString("ShiftLeftLogical"); |
| case SpvOpBitwiseOr: |
| return SkString("BitwiseOr"); |
| case SpvOpBitwiseXor: |
| return SkString("BitwiseXor"); |
| case SpvOpBitwiseAnd: |
| return SkString("BitwiseAnd"); |
| case SpvOpNot: |
| return SkString("Not"); |
| case SpvOpBitFieldInsert: |
| return SkString("BitFieldInsert"); |
| case SpvOpBitFieldSExtract: |
| return SkString("BitFieldSExtract"); |
| case SpvOpBitFieldUExtract: |
| return SkString("BitFieldUExtract"); |
| case SpvOpBitReverse: |
| return SkString("BitReverse"); |
| case SpvOpBitCount: |
| return SkString("BitCount"); |
| case SpvOpDPdx: |
| return SkString("DPdx"); |
| case SpvOpDPdy: |
| return SkString("DPdy"); |
| case SpvOpFwidth: |
| return SkString("Fwidth"); |
| case SpvOpDPdxFine: |
| return SkString("DPdxFine"); |
| case SpvOpDPdyFine: |
| return SkString("DPdyFine"); |
| case SpvOpFwidthFine: |
| return SkString("FwidthFine"); |
| case SpvOpDPdxCoarse: |
| return SkString("DPdxCoarse"); |
| case SpvOpDPdyCoarse: |
| return SkString("DPdyCoarse"); |
| case SpvOpFwidthCoarse: |
| return SkString("FwidthCoarse"); |
| case SpvOpEmitVertex: |
| return SkString("EmitVertex"); |
| case SpvOpEndPrimitive: |
| return SkString("EndPrimitive"); |
| case SpvOpEmitStreamVertex: |
| return SkString("EmitStreamVertex"); |
| case SpvOpEndStreamPrimitive: |
| return SkString("EndStreamPrimitive"); |
| case SpvOpControlBarrier: |
| return SkString("ControlBarrier"); |
| case SpvOpMemoryBarrier: |
| return SkString("MemoryBarrier"); |
| case SpvOpAtomicLoad: |
| return SkString("AtomicLoad"); |
| case SpvOpAtomicStore: |
| return SkString("AtomicStore"); |
| case SpvOpAtomicExchange: |
| return SkString("AtomicExchange"); |
| case SpvOpAtomicCompareExchange: |
| return SkString("AtomicCompareExchange"); |
| case SpvOpAtomicCompareExchangeWeak: |
| return SkString("AtomicCompareExchangeWeak"); |
| case SpvOpAtomicIIncrement: |
| return SkString("AtomicIIncrement"); |
| case SpvOpAtomicIDecrement: |
| return SkString("AtomicIDecrement"); |
| case SpvOpAtomicIAdd: |
| return SkString("AtomicIAdd"); |
| case SpvOpAtomicISub: |
| return SkString("AtomicISub"); |
| case SpvOpAtomicSMin: |
| return SkString("AtomicSMin"); |
| case SpvOpAtomicUMin: |
| return SkString("AtomicUMin"); |
| case SpvOpAtomicSMax: |
| return SkString("AtomicSMax"); |
| case SpvOpAtomicUMax: |
| return SkString("AtomicUMax"); |
| case SpvOpAtomicAnd: |
| return SkString("AtomicAnd"); |
| case SpvOpAtomicOr: |
| return SkString("AtomicOr"); |
| case SpvOpAtomicXor: |
| return SkString("AtomicXor"); |
| case SpvOpPhi: |
| return SkString("Phi"); |
| case SpvOpLoopMerge: |
| return SkString("LoopMerge"); |
| case SpvOpSelectionMerge: |
| return SkString("SelectionMerge"); |
| case SpvOpLabel: |
| return SkString("Label"); |
| case SpvOpBranch: |
| return SkString("Branch"); |
| case SpvOpBranchConditional: |
| return SkString("BranchConditional"); |
| case SpvOpSwitch: |
| return SkString("Switch"); |
| case SpvOpKill: |
| return SkString("Kill"); |
| case SpvOpReturn: |
| return SkString("Return"); |
| case SpvOpReturnValue: |
| return SkString("ReturnValue"); |
| case SpvOpUnreachable: |
| return SkString("Unreachable"); |
| case SpvOpLifetimeStart: |
| return SkString("LifetimeStart"); |
| case SpvOpLifetimeStop: |
| return SkString("LifetimeStop"); |
| case SpvOpGroupAsyncCopy: |
| return SkString("GroupAsyncCopy"); |
| case SpvOpGroupWaitEvents: |
| return SkString("GroupWaitEvents"); |
| case SpvOpGroupAll: |
| return SkString("GroupAll"); |
| case SpvOpGroupAny: |
| return SkString("GroupAny"); |
| case SpvOpGroupBroadcast: |
| return SkString("GroupBroadcast"); |
| case SpvOpGroupIAdd: |
| return SkString("GroupIAdd"); |
| case SpvOpGroupFAdd: |
| return SkString("GroupFAdd"); |
| case SpvOpGroupFMin: |
| return SkString("GroupFMin"); |
| case SpvOpGroupUMin: |
| return SkString("GroupUMin"); |
| case SpvOpGroupSMin: |
| return SkString("GroupSMin"); |
| case SpvOpGroupFMax: |
| return SkString("GroupFMax"); |
| case SpvOpGroupUMax: |
| return SkString("GroupUMax"); |
| case SpvOpGroupSMax: |
| return SkString("GroupSMax"); |
| case SpvOpReadPipe: |
| return SkString("ReadPipe"); |
| case SpvOpWritePipe: |
| return SkString("WritePipe"); |
| case SpvOpReservedReadPipe: |
| return SkString("ReservedReadPipe"); |
| case SpvOpReservedWritePipe: |
| return SkString("ReservedWritePipe"); |
| case SpvOpReserveReadPipePackets: |
| return SkString("ReserveReadPipePackets"); |
| case SpvOpReserveWritePipePackets: |
| return SkString("ReserveWritePipePackets"); |
| case SpvOpCommitReadPipe: |
| return SkString("CommitReadPipe"); |
| case SpvOpCommitWritePipe: |
| return SkString("CommitWritePipe"); |
| case SpvOpIsValidReserveId: |
| return SkString("IsValidReserveId"); |
| case SpvOpGetNumPipePackets: |
| return SkString("GetNumPipePackets"); |
| case SpvOpGetMaxPipePackets: |
| return SkString("GetMaxPipePackets"); |
| case SpvOpGroupReserveReadPipePackets: |
| return SkString("GroupReserveReadPipePackets"); |
| case SpvOpGroupReserveWritePipePackets: |
| return SkString("GroupReserveWritePipePackets"); |
| case SpvOpGroupCommitReadPipe: |
| return SkString("GroupCommitReadPipe"); |
| case SpvOpGroupCommitWritePipe: |
| return SkString("GroupCommitWritePipe"); |
| case SpvOpEnqueueMarker: |
| return SkString("EnqueueMarker"); |
| case SpvOpEnqueueKernel: |
| return SkString("EnqueueKernel"); |
| case SpvOpGetKernelNDrangeSubGroupCount: |
| return SkString("GetKernelNDrangeSubGroupCount"); |
| case SpvOpGetKernelNDrangeMaxSubGroupSize: |
| return SkString("GetKernelNDrangeMaxSubGroupSize"); |
| case SpvOpGetKernelWorkGroupSize: |
| return SkString("GetKernelWorkGroupSize"); |
| case SpvOpGetKernelPreferredWorkGroupSizeMultiple: |
| return SkString("GetKernelPreferredWorkGroupSizeMultiple"); |
| case SpvOpRetainEvent: |
| return SkString("RetainEvent"); |
| case SpvOpReleaseEvent: |
| return SkString("ReleaseEvent"); |
| case SpvOpCreateUserEvent: |
| return SkString("CreateUserEvent"); |
| case SpvOpIsValidEvent: |
| return SkString("IsValidEvent"); |
| case SpvOpSetUserEventStatus: |
| return SkString("SetUserEventStatus"); |
| case SpvOpCaptureEventProfilingInfo: |
| return SkString("CaptureEventProfilingInfo"); |
| case SpvOpGetDefaultQueue: |
| return SkString("GetDefaultQueue"); |
| case SpvOpBuildNDRange: |
| return SkString("BuildNDRange"); |
| case SpvOpImageSparseSampleImplicitLod: |
| return SkString("ImageSparseSampleImplicitLod"); |
| case SpvOpImageSparseSampleExplicitLod: |
| return SkString("ImageSparseSampleExplicitLod"); |
| case SpvOpImageSparseSampleDrefImplicitLod: |
| return SkString("ImageSparseSampleDrefImplicitLod"); |
| case SpvOpImageSparseSampleDrefExplicitLod: |
| return SkString("ImageSparseSampleDrefExplicitLod"); |
| case SpvOpImageSparseSampleProjImplicitLod: |
| return SkString("ImageSparseSampleProjImplicitLod"); |
| case SpvOpImageSparseSampleProjExplicitLod: |
| return SkString("ImageSparseSampleProjExplicitLod"); |
| case SpvOpImageSparseSampleProjDrefImplicitLod: |
| return SkString("ImageSparseSampleProjDrefImplicitLod"); |
| case SpvOpImageSparseSampleProjDrefExplicitLod: |
| return SkString("ImageSparseSampleProjDrefExplicitLod"); |
| case SpvOpImageSparseFetch: |
| return SkString("ImageSparseFetch"); |
| case SpvOpImageSparseGather: |
| return SkString("ImageSparseGather"); |
| case SpvOpImageSparseDrefGather: |
| return SkString("ImageSparseDrefGather"); |
| case SpvOpImageSparseTexelsResident: |
| return SkString("ImageSparseTexelsResident"); |
| case SpvOpNoLine: |
| return SkString("NoLine"); |
| case SpvOpAtomicFlagTestAndSet: |
| return SkString("AtomicFlagTestAndSet"); |
| case SpvOpAtomicFlagClear: |
| return SkString("AtomicFlagClear"); |
| case SpvOpImageSparseRead: |
| return SkString("ImageSparseRead"); |
| default: |
| ABORT("unsupported SPIR-V op"); |
| } |
| } |
| #endif |
| |
| void SPIRVCodeGenerator::writeOpCode(SpvOp_ opCode, int length, SkWStream& out) { |
| ASSERT(opCode != SpvOpUndef); |
| switch (opCode) { |
| case SpvOpReturn: // fall through |
| case SpvOpReturnValue: // fall through |
| case SpvOpKill: // fall through |
| case SpvOpBranch: // fall through |
| case SpvOpBranchConditional: |
| ASSERT(fCurrentBlock); |
| fCurrentBlock = 0; |
| break; |
| case SpvOpConstant: // fall through |
| case SpvOpConstantTrue: // fall through |
| case SpvOpConstantFalse: // fall through |
| case SpvOpConstantComposite: // fall through |
| case SpvOpTypeVoid: // fall through |
| case SpvOpTypeInt: // fall through |
| case SpvOpTypeFloat: // fall through |
| case SpvOpTypeBool: // fall through |
| case SpvOpTypeVector: // fall through |
| case SpvOpTypeMatrix: // fall through |
| case SpvOpTypeArray: // fall through |
| case SpvOpTypePointer: // fall through |
| case SpvOpTypeFunction: // fall through |
| case SpvOpTypeRuntimeArray: // fall through |
| case SpvOpTypeStruct: // fall through |
| case SpvOpTypeImage: // fall through |
| case SpvOpTypeSampledImage: // fall through |
| case SpvOpVariable: // fall through |
| case SpvOpFunction: // fall through |
| case SpvOpFunctionParameter: // fall through |
| case SpvOpFunctionEnd: // fall through |
| case SpvOpExecutionMode: // fall through |
| case SpvOpMemoryModel: // fall through |
| case SpvOpCapability: // fall through |
| case SpvOpExtInstImport: // fall through |
| case SpvOpEntryPoint: // fall through |
| case SpvOpSource: // fall through |
| case SpvOpSourceExtension: // fall through |
| case SpvOpName: // fall through |
| case SpvOpMemberName: // fall through |
| case SpvOpDecorate: // fall through |
| case SpvOpMemberDecorate: |
| break; |
| default: |
| ASSERT(fCurrentBlock); |
| } |
| #if SPIRV_DEBUG |
| out << std::endl << opcode_text(opCode) << " "; |
| #else |
| this->writeWord((length << 16) | opCode, out); |
| #endif |
| } |
| |
| void SPIRVCodeGenerator::writeLabel(SpvId label, SkWStream& out) { |
| fCurrentBlock = label; |
| this->writeInstruction(SpvOpLabel, label, out); |
| } |
| |
| void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, SkWStream& out) { |
| this->writeOpCode(opCode, 1, out); |
| } |
| |
| void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, int32_t word1, SkWStream& out) { |
| this->writeOpCode(opCode, 2, out); |
| this->writeWord(word1, out); |
| } |
| |
| void SPIRVCodeGenerator::writeString(const char* string, SkWStream& out) { |
| size_t length = strlen(string); |
| out.writeText(string); |
| switch (length % 4) { |
| case 1: |
| out.write8(0); |
| // fall through |
| case 2: |
| out.write8(0); |
| // fall through |
| case 3: |
| out.write8(0); |
| break; |
| default: |
| this->writeWord(0, out); |
| } |
| } |
| |
| void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, const char* string, SkWStream& out) { |
| int32_t length = (int32_t) strlen(string); |
| this->writeOpCode(opCode, 1 + (length + 4) / 4, out); |
| this->writeString(string, out); |
| } |
| |
| |
| void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, int32_t word1, const char* string, |
| SkWStream& out) { |
| int32_t length = (int32_t) strlen(string); |
| this->writeOpCode(opCode, 2 + (length + 4) / 4, out); |
| this->writeWord(word1, out); |
| this->writeString(string, out); |
| } |
| |
| void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, int32_t word1, int32_t word2, |
| const char* string, SkWStream& out) { |
| int32_t length = (int32_t) strlen(string); |
| this->writeOpCode(opCode, 3 + (length + 4) / 4, out); |
| this->writeWord(word1, out); |
| this->writeWord(word2, out); |
| this->writeString(string, out); |
| } |
| |
| void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, int32_t word1, int32_t word2, |
| SkWStream& out) { |
| this->writeOpCode(opCode, 3, out); |
| this->writeWord(word1, out); |
| this->writeWord(word2, out); |
| } |
| |
| void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, int32_t word1, int32_t word2, |
| int32_t word3, SkWStream& out) { |
| this->writeOpCode(opCode, 4, out); |
| this->writeWord(word1, out); |
| this->writeWord(word2, out); |
| this->writeWord(word3, out); |
| } |
| |
| void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, int32_t word1, int32_t word2, |
| int32_t word3, int32_t word4, SkWStream& out) { |
| this->writeOpCode(opCode, 5, out); |
| this->writeWord(word1, out); |
| this->writeWord(word2, out); |
| this->writeWord(word3, out); |
| this->writeWord(word4, out); |
| } |
| |
| void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, int32_t word1, int32_t word2, |
| int32_t word3, int32_t word4, int32_t word5, |
| SkWStream& out) { |
| this->writeOpCode(opCode, 6, out); |
| this->writeWord(word1, out); |
| this->writeWord(word2, out); |
| this->writeWord(word3, out); |
| this->writeWord(word4, out); |
| this->writeWord(word5, out); |
| } |
| |
| void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, int32_t word1, int32_t word2, |
| int32_t word3, int32_t word4, int32_t word5, |
| int32_t word6, SkWStream& out) { |
| this->writeOpCode(opCode, 7, out); |
| this->writeWord(word1, out); |
| this->writeWord(word2, out); |
| this->writeWord(word3, out); |
| this->writeWord(word4, out); |
| this->writeWord(word5, out); |
| this->writeWord(word6, out); |
| } |
| |
| void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, int32_t word1, int32_t word2, |
| int32_t word3, int32_t word4, int32_t word5, |
| int32_t word6, int32_t word7, SkWStream& out) { |
| this->writeOpCode(opCode, 8, out); |
| this->writeWord(word1, out); |
| this->writeWord(word2, out); |
| this->writeWord(word3, out); |
| this->writeWord(word4, out); |
| this->writeWord(word5, out); |
| this->writeWord(word6, out); |
| this->writeWord(word7, out); |
| } |
| |
| void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, int32_t word1, int32_t word2, |
| int32_t word3, int32_t word4, int32_t word5, |
| int32_t word6, int32_t word7, int32_t word8, |
| SkWStream& out) { |
| this->writeOpCode(opCode, 9, out); |
| this->writeWord(word1, out); |
| this->writeWord(word2, out); |
| this->writeWord(word3, out); |
| this->writeWord(word4, out); |
| this->writeWord(word5, out); |
| this->writeWord(word6, out); |
| this->writeWord(word7, out); |
| this->writeWord(word8, out); |
| } |
| |
| void SPIRVCodeGenerator::writeCapabilities(SkWStream& out) { |
| for (uint64_t i = 0, bit = 1; i <= kLast_Capability; i++, bit <<= 1) { |
| if (fCapabilities & bit) { |
| this->writeInstruction(SpvOpCapability, (SpvId) i, out); |
| } |
| } |
| } |
| |
| SpvId SPIRVCodeGenerator::nextId() { |
| return fIdCount++; |
| } |
| |
| void SPIRVCodeGenerator::writeStruct(const Type& type, const MemoryLayout& memoryLayout, |
| SpvId resultId) { |
| this->writeInstruction(SpvOpName, resultId, type.name().c_str(), fNameBuffer); |
| // go ahead and write all of the field types, so we don't inadvertently write them while we're |
| // in the middle of writing the struct instruction |
| std::vector<SpvId> types; |
| for (const auto& f : type.fields()) { |
| types.push_back(this->getType(*f.fType, memoryLayout)); |
| } |
| this->writeOpCode(SpvOpTypeStruct, 2 + (int32_t) types.size(), fConstantBuffer); |
| this->writeWord(resultId, fConstantBuffer); |
| for (SpvId id : types) { |
| this->writeWord(id, fConstantBuffer); |
| } |
| size_t offset = 0; |
| for (int32_t i = 0; i < (int32_t) type.fields().size(); i++) { |
| size_t size = memoryLayout.size(*type.fields()[i].fType); |
| size_t alignment = memoryLayout.alignment(*type.fields()[i].fType); |
| const Layout& fieldLayout = type.fields()[i].fModifiers.fLayout; |
| if (fieldLayout.fOffset >= 0) { |
| if (fieldLayout.fOffset <= (int) offset) { |
| fErrors.error(type.fPosition, |
| "offset of field '" + type.fields()[i].fName + "' must be at " |
| "least " + to_string((int) offset)); |
| } |
| if (fieldLayout.fOffset % alignment) { |
| fErrors.error(type.fPosition, |
| "offset of field '" + type.fields()[i].fName + "' must be a multiple" |
| " of " + to_string((int) alignment)); |
| } |
| offset = fieldLayout.fOffset; |
| } else { |
| size_t mod = offset % alignment; |
| if (mod) { |
| offset += alignment - mod; |
| } |
| } |
| this->writeInstruction(SpvOpMemberName, resultId, i, type.fields()[i].fName.c_str(), |
| fNameBuffer); |
| this->writeLayout(fieldLayout, resultId, i); |
| if (type.fields()[i].fModifiers.fLayout.fBuiltin < 0) { |
| this->writeInstruction(SpvOpMemberDecorate, resultId, (SpvId) i, SpvDecorationOffset, |
| (SpvId) offset, fDecorationBuffer); |
| } |
| if (type.fields()[i].fType->kind() == Type::kMatrix_Kind) { |
| this->writeInstruction(SpvOpMemberDecorate, resultId, i, SpvDecorationColMajor, |
| fDecorationBuffer); |
| this->writeInstruction(SpvOpMemberDecorate, resultId, i, SpvDecorationMatrixStride, |
| (SpvId) memoryLayout.stride(*type.fields()[i].fType), |
| fDecorationBuffer); |
| } |
| offset += size; |
| Type::Kind kind = type.fields()[i].fType->kind(); |
| if ((kind == Type::kArray_Kind || kind == Type::kStruct_Kind) && offset % alignment != 0) { |
| offset += alignment - offset % alignment; |
| } |
| } |
| } |
| |
| SpvId SPIRVCodeGenerator::getType(const Type& type) { |
| return this->getType(type, fDefaultLayout); |
| } |
| |
| SpvId SPIRVCodeGenerator::getType(const Type& type, const MemoryLayout& layout) { |
| SkString key = type.name() + to_string((int) layout.fStd); |
| auto entry = fTypeMap.find(key); |
| if (entry == fTypeMap.end()) { |
| SpvId result = this->nextId(); |
| switch (type.kind()) { |
| case Type::kScalar_Kind: |
| if (type == *fContext.fBool_Type) { |
| this->writeInstruction(SpvOpTypeBool, result, fConstantBuffer); |
| } else if (type == *fContext.fInt_Type) { |
| this->writeInstruction(SpvOpTypeInt, result, 32, 1, fConstantBuffer); |
| } else if (type == *fContext.fUInt_Type) { |
| this->writeInstruction(SpvOpTypeInt, result, 32, 0, fConstantBuffer); |
| } else if (type == *fContext.fFloat_Type) { |
| this->writeInstruction(SpvOpTypeFloat, result, 32, fConstantBuffer); |
| } else if (type == *fContext.fDouble_Type) { |
| this->writeInstruction(SpvOpTypeFloat, result, 64, fConstantBuffer); |
| } else { |
| ASSERT(false); |
| } |
| break; |
| case Type::kVector_Kind: |
| this->writeInstruction(SpvOpTypeVector, result, |
| this->getType(type.componentType(), layout), |
| type.columns(), fConstantBuffer); |
| break; |
| case Type::kMatrix_Kind: |
| this->writeInstruction(SpvOpTypeMatrix, result, |
| this->getType(index_type(fContext, type), layout), |
| type.columns(), fConstantBuffer); |
| break; |
| case Type::kStruct_Kind: |
| this->writeStruct(type, layout, result); |
| break; |
| case Type::kArray_Kind: { |
| if (type.columns() > 0) { |
| IntLiteral count(fContext, Position(), type.columns()); |
| this->writeInstruction(SpvOpTypeArray, result, |
| this->getType(type.componentType(), layout), |
| this->writeIntLiteral(count), fConstantBuffer); |
| this->writeInstruction(SpvOpDecorate, result, SpvDecorationArrayStride, |
| (int32_t) layout.stride(type), |
| fDecorationBuffer); |
| } else { |
| ABORT("runtime-sized arrays are not yet supported"); |
| this->writeInstruction(SpvOpTypeRuntimeArray, result, |
| this->getType(type.componentType(), layout), |
| fConstantBuffer); |
| } |
| break; |
| } |
| case Type::kSampler_Kind: { |
| SpvId image = result; |
| if (SpvDimSubpassData != type.dimensions()) { |
| image = this->nextId(); |
| } |
| this->writeInstruction(SpvOpTypeImage, image, |
| this->getType(*fContext.fFloat_Type, layout), |
| type.dimensions(), type.isDepth(), type.isArrayed(), |
| type.isMultisampled(), type.isSampled() ? 1 : 2, |
| SpvImageFormatUnknown, fConstantBuffer); |
| if (SpvDimSubpassData != type.dimensions()) { |
| this->writeInstruction(SpvOpTypeSampledImage, result, image, fConstantBuffer); |
| } |
| break; |
| } |
| default: |
| if (type == *fContext.fVoid_Type) { |
| this->writeInstruction(SpvOpTypeVoid, result, fConstantBuffer); |
| } else { |
| ABORT("invalid type: %s", type.description().c_str()); |
| } |
| } |
| fTypeMap[key] = result; |
| return result; |
| } |
| return entry->second; |
| } |
| |
| SpvId SPIRVCodeGenerator::getFunctionType(const FunctionDeclaration& function) { |
| SkString key = function.fReturnType.description() + "("; |
| SkString separator; |
| for (size_t i = 0; i < function.fParameters.size(); i++) { |
| key += separator; |
| separator = ", "; |
| key += function.fParameters[i]->fType.description(); |
| } |
| key += ")"; |
| auto entry = fTypeMap.find(key); |
| if (entry == fTypeMap.end()) { |
| SpvId result = this->nextId(); |
| int32_t length = 3 + (int32_t) function.fParameters.size(); |
| SpvId returnType = this->getType(function.fReturnType); |
| std::vector<SpvId> parameterTypes; |
| for (size_t i = 0; i < function.fParameters.size(); i++) { |
| // glslang seems to treat all function arguments as pointers whether they need to be or |
| // not. I was initially puzzled by this until I ran bizarre failures with certain |
| // patterns of function calls and control constructs, as exemplified by this minimal |
| // failure case: |
| // |
| // void sphere(float x) { |
| // } |
| // |
| // void map() { |
| // sphere(1.0); |
| // } |
| // |
| // void main() { |
| // for (int i = 0; i < 1; i++) { |
| // map(); |
| // } |
| // } |
| // |
| // As of this writing, compiling this in the "obvious" way (with sphere taking a float) |
| // crashes. Making it take a float* and storing the argument in a temporary variable, |
| // as glslang does, fixes it. It's entirely possible I simply missed whichever part of |
| // the spec makes this make sense. |
| // if (is_out(function->fParameters[i])) { |
| parameterTypes.push_back(this->getPointerType(function.fParameters[i]->fType, |
| SpvStorageClassFunction)); |
| // } else { |
| // parameterTypes.push_back(this->getType(function.fParameters[i]->fType)); |
| // } |
| } |
| this->writeOpCode(SpvOpTypeFunction, length, fConstantBuffer); |
| this->writeWord(result, fConstantBuffer); |
| this->writeWord(returnType, fConstantBuffer); |
| for (SpvId id : parameterTypes) { |
| this->writeWord(id, fConstantBuffer); |
| } |
| fTypeMap[key] = result; |
| return result; |
| } |
| return entry->second; |
| } |
| |
| SpvId SPIRVCodeGenerator::getPointerType(const Type& type, SpvStorageClass_ storageClass) { |
| return this->getPointerType(type, fDefaultLayout, storageClass); |
| } |
| |
| SpvId SPIRVCodeGenerator::getPointerType(const Type& type, const MemoryLayout& layout, |
| SpvStorageClass_ storageClass) { |
| SkString key = type.description() + "*" + to_string(layout.fStd) + to_string(storageClass); |
| auto entry = fTypeMap.find(key); |
| if (entry == fTypeMap.end()) { |
| SpvId result = this->nextId(); |
| this->writeInstruction(SpvOpTypePointer, result, storageClass, |
| this->getType(type), fConstantBuffer); |
| fTypeMap[key] = result; |
| return result; |
| } |
| return entry->second; |
| } |
| |
| SpvId SPIRVCodeGenerator::writeExpression(const Expression& expr, SkWStream& out) { |
| switch (expr.fKind) { |
| case Expression::kBinary_Kind: |
| return this->writeBinaryExpression((BinaryExpression&) expr, out); |
| case Expression::kBoolLiteral_Kind: |
| return this->writeBoolLiteral((BoolLiteral&) expr); |
| case Expression::kConstructor_Kind: |
| return this->writeConstructor((Constructor&) expr, out); |
| case Expression::kIntLiteral_Kind: |
| return this->writeIntLiteral((IntLiteral&) expr); |
| case Expression::kFieldAccess_Kind: |
| return this->writeFieldAccess(((FieldAccess&) expr), out); |
| case Expression::kFloatLiteral_Kind: |
| return this->writeFloatLiteral(((FloatLiteral&) expr)); |
| case Expression::kFunctionCall_Kind: |
| return this->writeFunctionCall((FunctionCall&) expr, out); |
| case Expression::kPrefix_Kind: |
| return this->writePrefixExpression((PrefixExpression&) expr, out); |
| case Expression::kPostfix_Kind: |
| return this->writePostfixExpression((PostfixExpression&) expr, out); |
| case Expression::kSwizzle_Kind: |
| return this->writeSwizzle((Swizzle&) expr, out); |
| case Expression::kVariableReference_Kind: |
| return this->writeVariableReference((VariableReference&) expr, out); |
| case Expression::kTernary_Kind: |
| return this->writeTernaryExpression((TernaryExpression&) expr, out); |
| case Expression::kIndex_Kind: |
| return this->writeIndexExpression((IndexExpression&) expr, out); |
| default: |
| ABORT("unsupported expression: %s", expr.description().c_str()); |
| } |
| return -1; |
| } |
| |
| SpvId SPIRVCodeGenerator::writeIntrinsicCall(const FunctionCall& c, SkWStream& out) { |
| auto intrinsic = fIntrinsicMap.find(c.fFunction.fName); |
| ASSERT(intrinsic != fIntrinsicMap.end()); |
| const Type& type = c.fArguments[0]->fType; |
| int32_t intrinsicId; |
| if (std::get<0>(intrinsic->second) == kSpecial_IntrinsicKind || is_float(fContext, type)) { |
| intrinsicId = std::get<1>(intrinsic->second); |
| } else if (is_signed(fContext, type)) { |
| intrinsicId = std::get<2>(intrinsic->second); |
| } else if (is_unsigned(fContext, type)) { |
| intrinsicId = std::get<3>(intrinsic->second); |
| } else if (is_bool(fContext, type)) { |
| intrinsicId = std::get<4>(intrinsic->second); |
| } else { |
| ABORT("invalid call %s, cannot operate on '%s'", c.description().c_str(), |
| type.description().c_str()); |
| } |
| switch (std::get<0>(intrinsic->second)) { |
| case kGLSL_STD_450_IntrinsicKind: { |
| SpvId result = this->nextId(); |
| std::vector<SpvId> arguments; |
| for (size_t i = 0; i < c.fArguments.size(); i++) { |
| arguments.push_back(this->writeExpression(*c.fArguments[i], out)); |
| } |
| this->writeOpCode(SpvOpExtInst, 5 + (int32_t) arguments.size(), out); |
| this->writeWord(this->getType(c.fType), out); |
| this->writeWord(result, out); |
| this->writeWord(fGLSLExtendedInstructions, out); |
| this->writeWord(intrinsicId, out); |
| for (SpvId id : arguments) { |
| this->writeWord(id, out); |
| } |
| return result; |
| } |
| case kSPIRV_IntrinsicKind: { |
| SpvId result = this->nextId(); |
| std::vector<SpvId> arguments; |
| for (size_t i = 0; i < c.fArguments.size(); i++) { |
| arguments.push_back(this->writeExpression(*c.fArguments[i], out)); |
| } |
| this->writeOpCode((SpvOp_) intrinsicId, 3 + (int32_t) arguments.size(), out); |
| this->writeWord(this->getType(c.fType), out); |
| this->writeWord(result, out); |
| for (SpvId id : arguments) { |
| this->writeWord(id, out); |
| } |
| return result; |
| } |
| case kSpecial_IntrinsicKind: |
| return this->writeSpecialIntrinsic(c, (SpecialIntrinsic) intrinsicId, out); |
| default: |
| ABORT("unsupported intrinsic kind"); |
| } |
| } |
| |
| SpvId SPIRVCodeGenerator::writeSpecialIntrinsic(const FunctionCall& c, SpecialIntrinsic kind, |
| SkWStream& out) { |
| SpvId result = this->nextId(); |
| switch (kind) { |
| case kAtan_SpecialIntrinsic: { |
| std::vector<SpvId> arguments; |
| for (size_t i = 0; i < c.fArguments.size(); i++) { |
| arguments.push_back(this->writeExpression(*c.fArguments[i], out)); |
| } |
| this->writeOpCode(SpvOpExtInst, 5 + (int32_t) arguments.size(), out); |
| this->writeWord(this->getType(c.fType), out); |
| this->writeWord(result, out); |
| this->writeWord(fGLSLExtendedInstructions, out); |
| this->writeWord(arguments.size() == 2 ? GLSLstd450Atan2 : GLSLstd450Atan, out); |
| for (SpvId id : arguments) { |
| this->writeWord(id, out); |
| } |
| return result; |
| } |
| case kTexture_SpecialIntrinsic: { |
| SpvOp_ op = SpvOpImageSampleImplicitLod; |
| switch (c.fArguments[0]->fType.dimensions()) { |
| case SpvDim1D: |
| if (c.fArguments[1]->fType == *fContext.fVec2_Type) { |
| op = SpvOpImageSampleProjImplicitLod; |
| } else { |
| ASSERT(c.fArguments[1]->fType == *fContext.fFloat_Type); |
| } |
| break; |
| case SpvDim2D: |
| if (c.fArguments[1]->fType == *fContext.fVec3_Type) { |
| op = SpvOpImageSampleProjImplicitLod; |
| } else { |
| ASSERT(c.fArguments[1]->fType == *fContext.fVec2_Type); |
| } |
| break; |
| case SpvDim3D: |
| if (c.fArguments[1]->fType == *fContext.fVec4_Type) { |
| op = SpvOpImageSampleProjImplicitLod; |
| } else { |
| ASSERT(c.fArguments[1]->fType == *fContext.fVec3_Type); |
| } |
| break; |
| case SpvDimCube: // fall through |
| case SpvDimRect: // fall through |
| case SpvDimBuffer: // fall through |
| case SpvDimSubpassData: |
| break; |
| } |
| SpvId type = this->getType(c.fType); |
| SpvId sampler = this->writeExpression(*c.fArguments[0], out); |
| SpvId uv = this->writeExpression(*c.fArguments[1], out); |
| if (c.fArguments.size() == 3) { |
| this->writeInstruction(op, type, result, sampler, uv, |
| SpvImageOperandsBiasMask, |
| this->writeExpression(*c.fArguments[2], out), |
| out); |
| } else { |
| ASSERT(c.fArguments.size() == 2); |
| this->writeInstruction(op, type, result, sampler, uv, |
| out); |
| } |
| break; |
| } |
| case kSubpassLoad_SpecialIntrinsic: { |
| SpvId img = this->writeExpression(*c.fArguments[0], out); |
| std::vector<std::unique_ptr<Expression>> args; |
| args.emplace_back(new FloatLiteral(fContext, Position(), 0.0)); |
| args.emplace_back(new FloatLiteral(fContext, Position(), 0.0)); |
| Constructor ctor(Position(), *fContext.fVec2_Type, std::move(args)); |
| SpvId coords = this->writeConstantVector(ctor); |
| if (1 == c.fArguments.size()) { |
| this->writeInstruction(SpvOpImageRead, |
| this->getType(c.fType), |
| result, |
| img, |
| coords, |
| out); |
| } else { |
| SkASSERT(2 == c.fArguments.size()); |
| SpvId sample = this->writeExpression(*c.fArguments[1], out); |
| this->writeInstruction(SpvOpImageRead, |
| this->getType(c.fType), |
| result, |
| img, |
| coords, |
| SpvImageOperandsSampleMask, |
| sample, |
| out); |
| } |
| break; |
| } |
| } |
| return result; |
| } |
| |
| SpvId SPIRVCodeGenerator::writeFunctionCall(const FunctionCall& c, SkWStream& out) { |
| const auto& entry = fFunctionMap.find(&c.fFunction); |
| if (entry == fFunctionMap.end()) { |
| return this->writeIntrinsicCall(c, out); |
| } |
| // stores (variable, type, lvalue) pairs to extract and save after the function call is complete |
| std::vector<std::tuple<SpvId, SpvId, std::unique_ptr<LValue>>> lvalues; |
| std::vector<SpvId> arguments; |
| for (size_t i = 0; i < c.fArguments.size(); i++) { |
| // id of temporary variable that we will use to hold this argument, or 0 if it is being |
| // passed directly |
| SpvId tmpVar; |
| // if we need a temporary var to store this argument, this is the value to store in the var |
| SpvId tmpValueId; |
| if (is_out(*c.fFunction.fParameters[i])) { |
| std::unique_ptr<LValue> lv = this->getLValue(*c.fArguments[i], out); |
| SpvId ptr = lv->getPointer(); |
| if (ptr) { |
| arguments.push_back(ptr); |
| continue; |
| } else { |
| // lvalue cannot simply be read and written via a pointer (e.g. a swizzle). Need to |
| // copy it into a temp, call the function, read the value out of the temp, and then |
| // update the lvalue. |
| tmpValueId = lv->load(out); |
| tmpVar = this->nextId(); |
| lvalues.push_back(std::make_tuple(tmpVar, this->getType(c.fArguments[i]->fType), |
| std::move(lv))); |
| } |
| } else { |
| // see getFunctionType for an explanation of why we're always using pointer parameters |
| tmpValueId = this->writeExpression(*c.fArguments[i], out); |
| tmpVar = this->nextId(); |
| } |
| this->writeInstruction(SpvOpVariable, |
| this->getPointerType(c.fArguments[i]->fType, |
| SpvStorageClassFunction), |
| tmpVar, |
| SpvStorageClassFunction, |
| fVariableBuffer); |
| this->writeInstruction(SpvOpStore, tmpVar, tmpValueId, out); |
| arguments.push_back(tmpVar); |
| } |
| SpvId result = this->nextId(); |
| this->writeOpCode(SpvOpFunctionCall, 4 + (int32_t) c.fArguments.size(), out); |
| this->writeWord(this->getType(c.fType), out); |
| this->writeWord(result, out); |
| this->writeWord(entry->second, out); |
| for (SpvId id : arguments) { |
| this->writeWord(id, out); |
| } |
| // now that the call is complete, we may need to update some lvalues with the new values of out |
| // arguments |
| for (const auto& tuple : lvalues) { |
| SpvId load = this->nextId(); |
| this->writeInstruction(SpvOpLoad, std::get<1>(tuple), load, std::get<0>(tuple), out); |
| std::get<2>(tuple)->store(load, out); |
| } |
| return result; |
| } |
| |
| SpvId SPIRVCodeGenerator::writeConstantVector(const Constructor& c) { |
| ASSERT(c.fType.kind() == Type::kVector_Kind && c.isConstant()); |
| SpvId result = this->nextId(); |
| std::vector<SpvId> arguments; |
| for (size_t i = 0; i < c.fArguments.size(); i++) { |
| arguments.push_back(this->writeExpression(*c.fArguments[i], fConstantBuffer)); |
| } |
| SpvId type = this->getType(c.fType); |
| if (c.fArguments.size() == 1) { |
| // with a single argument, a vector will have all of its entries equal to the argument |
| this->writeOpCode(SpvOpConstantComposite, 3 + c.fType.columns(), fConstantBuffer); |
| this->writeWord(type, fConstantBuffer); |
| this->writeWord(result, fConstantBuffer); |
| for (int i = 0; i < c.fType.columns(); i++) { |
| this->writeWord(arguments[0], fConstantBuffer); |
| } |
| } else { |
| this->writeOpCode(SpvOpConstantComposite, 3 + (int32_t) c.fArguments.size(), |
| fConstantBuffer); |
| this->writeWord(type, fConstantBuffer); |
| this->writeWord(result, fConstantBuffer); |
| for (SpvId id : arguments) { |
| this->writeWord(id, fConstantBuffer); |
| } |
| } |
| return result; |
| } |
| |
| SpvId SPIRVCodeGenerator::writeFloatConstructor(const Constructor& c, SkWStream& out) { |
| ASSERT(c.fType == *fContext.fFloat_Type); |
| ASSERT(c.fArguments.size() == 1); |
| ASSERT(c.fArguments[0]->fType.isNumber()); |
| SpvId result = this->nextId(); |
| SpvId parameter = this->writeExpression(*c.fArguments[0], out); |
| if (c.fArguments[0]->fType == *fContext.fInt_Type) { |
| this->writeInstruction(SpvOpConvertSToF, this->getType(c.fType), result, parameter, |
| out); |
| } else if (c.fArguments[0]->fType == *fContext.fUInt_Type) { |
| this->writeInstruction(SpvOpConvertUToF, this->getType(c.fType), result, parameter, |
| out); |
| } else if (c.fArguments[0]->fType == *fContext.fFloat_Type) { |
| return parameter; |
| } |
| return result; |
| } |
| |
| SpvId SPIRVCodeGenerator::writeIntConstructor(const Constructor& c, SkWStream& out) { |
| ASSERT(c.fType == *fContext.fInt_Type); |
| ASSERT(c.fArguments.size() == 1); |
| ASSERT(c.fArguments[0]->fType.isNumber()); |
| SpvId result = this->nextId(); |
| SpvId parameter = this->writeExpression(*c.fArguments[0], out); |
| if (c.fArguments[0]->fType == *fContext.fFloat_Type) { |
| this->writeInstruction(SpvOpConvertFToS, this->getType(c.fType), result, parameter, |
| out); |
| } else if (c.fArguments[0]->fType == *fContext.fUInt_Type) { |
| this->writeInstruction(SpvOpSatConvertUToS, this->getType(c.fType), result, parameter, |
| out); |
| } else if (c.fArguments[0]->fType == *fContext.fInt_Type) { |
| return parameter; |
| } |
| return result; |
| } |
| |
| SpvId SPIRVCodeGenerator::writeMatrixConstructor(const Constructor& c, SkWStream& out) { |
| ASSERT(c.fType.kind() == Type::kMatrix_Kind); |
| // go ahead and write the arguments so we don't try to write new instructions in the middle of |
| // an instruction |
| std::vector<SpvId> arguments; |
| for (size_t i = 0; i < c.fArguments.size(); i++) { |
| arguments.push_back(this->writeExpression(*c.fArguments[i], out)); |
| } |
| SpvId result = this->nextId(); |
| int rows = c.fType.rows(); |
| int columns = c.fType.columns(); |
| // FIXME this won't work to create a matrix from another matrix |
| if (arguments.size() == 1) { |
| // with a single argument, a matrix will have all of its diagonal entries equal to the |
| // argument and its other values equal to zero |
| // FIXME this won't work for int matrices |
| FloatLiteral zero(fContext, Position(), 0); |
| SpvId zeroId = this->writeFloatLiteral(zero); |
| std::vector<SpvId> columnIds; |
| for (int column = 0; column < columns; column++) { |
| this->writeOpCode(SpvOpCompositeConstruct, 3 + c.fType.rows(), |
| out); |
| this->writeWord(this->getType(c.fType.componentType().toCompound(fContext, rows, 1)), |
| out); |
| SpvId columnId = this->nextId(); |
| this->writeWord(columnId, out); |
| columnIds.push_back(columnId); |
| for (int row = 0; row < c.fType.columns(); row++) { |
| this->writeWord(row == column ? arguments[0] : zeroId, out); |
| } |
| } |
| this->writeOpCode(SpvOpCompositeConstruct, 3 + columns, |
| out); |
| this->writeWord(this->getType(c.fType), out); |
| this->writeWord(result, out); |
| for (SpvId id : columnIds) { |
| this->writeWord(id, out); |
| } |
| } else { |
| std::vector<SpvId> columnIds; |
| int currentCount = 0; |
| for (size_t i = 0; i < arguments.size(); i++) { |
| if (c.fArguments[i]->fType.kind() == Type::kVector_Kind) { |
| ASSERT(currentCount == 0); |
| columnIds.push_back(arguments[i]); |
| currentCount = 0; |
| } else { |
| ASSERT(c.fArguments[i]->fType.kind() == Type::kScalar_Kind); |
| if (currentCount == 0) { |
| this->writeOpCode(SpvOpCompositeConstruct, 3 + c.fType.rows(), out); |
| this->writeWord(this->getType(c.fType.componentType().toCompound(fContext, rows, |
| 1)), |
| out); |
| SpvId id = this->nextId(); |
| this->writeWord(id, out); |
| columnIds.push_back(id); |
| } |
| this->writeWord(arguments[i], out); |
| currentCount = (currentCount + 1) % rows; |
| } |
| } |
| ASSERT(columnIds.size() == (size_t) columns); |
| this->writeOpCode(SpvOpCompositeConstruct, 3 + columns, out); |
| this->writeWord(this->getType(c.fType), out); |
| this->writeWord(result, out); |
| for (SpvId id : columnIds) { |
| this->writeWord(id, out); |
| } |
| } |
| return result; |
| } |
| |
| SpvId SPIRVCodeGenerator::writeVectorConstructor(const Constructor& c, SkWStream& out) { |
| ASSERT(c.fType.kind() == Type::kVector_Kind); |
| if (c.isConstant()) { |
| return this->writeConstantVector(c); |
| } |
| // go ahead and write the arguments so we don't try to write new instructions in the middle of |
| // an instruction |
| std::vector<SpvId> arguments; |
| for (size_t i = 0; i < c.fArguments.size(); i++) { |
| arguments.push_back(this->writeExpression(*c.fArguments[i], out)); |
| } |
| SpvId result = this->nextId(); |
| if (arguments.size() == 1 && c.fArguments[0]->fType.kind() == Type::kScalar_Kind) { |
| this->writeOpCode(SpvOpCompositeConstruct, 3 + c.fType.columns(), out); |
| this->writeWord(this->getType(c.fType), out); |
| this->writeWord(result, out); |
| for (int i = 0; i < c.fType.columns(); i++) { |
| this->writeWord(arguments[0], out); |
| } |
| } else { |
| this->writeOpCode(SpvOpCompositeConstruct, 3 + (int32_t) c.fArguments.size(), out); |
| this->writeWord(this->getType(c.fType), out); |
| this->writeWord(result, out); |
| for (SpvId id : arguments) { |
| this->writeWord(id, out); |
| } |
| } |
| return result; |
| } |
| |
| SpvId SPIRVCodeGenerator::writeConstructor(const Constructor& c, SkWStream& out) { |
| if (c.fType == *fContext.fFloat_Type) { |
| return this->writeFloatConstructor(c, out); |
| } else if (c.fType == *fContext.fInt_Type) { |
| return this->writeIntConstructor(c, out); |
| } |
| switch (c.fType.kind()) { |
| case Type::kVector_Kind: |
| return this->writeVectorConstructor(c, out); |
| case Type::kMatrix_Kind: |
| return this->writeMatrixConstructor(c, out); |
| default: |
| ABORT("unsupported constructor: %s", c.description().c_str()); |
| } |
| } |
| |
| SpvStorageClass_ get_storage_class(const Modifiers& modifiers) { |
| if (modifiers.fFlags & Modifiers::kIn_Flag) { |
| ASSERT(!modifiers.fLayout.fPushConstant); |
| return SpvStorageClassInput; |
| } else if (modifiers.fFlags & Modifiers::kOut_Flag) { |
| ASSERT(!modifiers.fLayout.fPushConstant); |
| return SpvStorageClassOutput; |
| } else if (modifiers.fFlags & Modifiers::kUniform_Flag) { |
| if (modifiers.fLayout.fPushConstant) { |
| return SpvStorageClassPushConstant; |
| } |
| return SpvStorageClassUniform; |
| } else { |
| return SpvStorageClassFunction; |
| } |
| } |
| |
| SpvStorageClass_ get_storage_class(const Expression& expr) { |
| switch (expr.fKind) { |
| case Expression::kVariableReference_Kind: |
| return get_storage_class(((VariableReference&) expr).fVariable.fModifiers); |
| case Expression::kFieldAccess_Kind: |
| return get_storage_class(*((FieldAccess&) expr).fBase); |
| case Expression::kIndex_Kind: |
| return get_storage_class(*((IndexExpression&) expr).fBase); |
| default: |
| return SpvStorageClassFunction; |
| } |
| } |
| |
| std::vector<SpvId> SPIRVCodeGenerator::getAccessChain(const Expression& expr, SkWStream& out) { |
| std::vector<SpvId> chain; |
| switch (expr.fKind) { |
| case Expression::kIndex_Kind: { |
| IndexExpression& indexExpr = (IndexExpression&) expr; |
| chain = this->getAccessChain(*indexExpr.fBase, out); |
| chain.push_back(this->writeExpression(*indexExpr.fIndex, out)); |
| break; |
| } |
| case Expression::kFieldAccess_Kind: { |
| FieldAccess& fieldExpr = (FieldAccess&) expr; |
| chain = this->getAccessChain(*fieldExpr.fBase, out); |
| IntLiteral index(fContext, Position(), fieldExpr.fFieldIndex); |
| chain.push_back(this->writeIntLiteral(index)); |
| break; |
| } |
| default: |
| chain.push_back(this->getLValue(expr, out)->getPointer()); |
| } |
| return chain; |
| } |
| |
| class PointerLValue : public SPIRVCodeGenerator::LValue { |
| public: |
| PointerLValue(SPIRVCodeGenerator& gen, SpvId pointer, SpvId type) |
| : fGen(gen) |
| , fPointer(pointer) |
| , fType(type) {} |
| |
| virtual SpvId getPointer() override { |
| return fPointer; |
| } |
| |
| virtual SpvId load(SkWStream& out) override { |
| SpvId result = fGen.nextId(); |
| fGen.writeInstruction(SpvOpLoad, fType, result, fPointer, out); |
| return result; |
| } |
| |
| virtual void store(SpvId value, SkWStream& out) override { |
| fGen.writeInstruction(SpvOpStore, fPointer, value, out); |
| } |
| |
| private: |
| SPIRVCodeGenerator& fGen; |
| const SpvId fPointer; |
| const SpvId fType; |
| }; |
| |
| class SwizzleLValue : public SPIRVCodeGenerator::LValue { |
| public: |
| SwizzleLValue(SPIRVCodeGenerator& gen, SpvId vecPointer, const std::vector<int>& components, |
| const Type& baseType, const Type& swizzleType) |
| : fGen(gen) |
| , fVecPointer(vecPointer) |
| , fComponents(components) |
| , fBaseType(baseType) |
| , fSwizzleType(swizzleType) {} |
| |
| virtual SpvId getPointer() override { |
| return 0; |
| } |
| |
| virtual SpvId load(SkWStream& out) override { |
| SpvId base = fGen.nextId(); |
| fGen.writeInstruction(SpvOpLoad, fGen.getType(fBaseType), base, fVecPointer, out); |
| SpvId result = fGen.nextId(); |
| fGen.writeOpCode(SpvOpVectorShuffle, 5 + (int32_t) fComponents.size(), out); |
| fGen.writeWord(fGen.getType(fSwizzleType), out); |
| fGen.writeWord(result, out); |
| fGen.writeWord(base, out); |
| fGen.writeWord(base, out); |
| for (int component : fComponents) { |
| fGen.writeWord(component, out); |
| } |
| return result; |
| } |
| |
| virtual void store(SpvId value, SkWStream& out) override { |
| // use OpVectorShuffle to mix and match the vector components. We effectively create |
| // a virtual vector out of the concatenation of the left and right vectors, and then |
| // select components from this virtual vector to make the result vector. For |
| // instance, given: |
| // vec3 L = ...; |
| // vec3 R = ...; |
| // L.xz = R.xy; |
| // we end up with the virtual vector (L.x, L.y, L.z, R.x, R.y, R.z). Then we want |
| // our result vector to look like (R.x, L.y, R.y), so we need to select indices |
| // (3, 1, 4). |
| SpvId base = fGen.nextId(); |
| fGen.writeInstruction(SpvOpLoad, fGen.getType(fBaseType), base, fVecPointer, out); |
| SpvId shuffle = fGen.nextId(); |
| fGen.writeOpCode(SpvOpVectorShuffle, 5 + fBaseType.columns(), out); |
| fGen.writeWord(fGen.getType(fBaseType), out); |
| fGen.writeWord(shuffle, out); |
| fGen.writeWord(base, out); |
| fGen.writeWord(value, out); |
| for (int i = 0; i < fBaseType.columns(); i++) { |
| // current offset into the virtual vector, defaults to pulling the unmodified |
| // value from the left side |
| int offset = i; |
| // check to see if we are writing this component |
| for (size_t j = 0; j < fComponents.size(); j++) { |
| if (fComponents[j] == i) { |
| // we're writing to this component, so adjust the offset to pull from |
| // the correct component of the right side instead of preserving the |
| // value from the left |
| offset = (int) (j + fBaseType.columns()); |
| break; |
| } |
| } |
| fGen.writeWord(offset, out); |
| } |
| fGen.writeInstruction(SpvOpStore, fVecPointer, shuffle, out); |
| } |
| |
| private: |
| SPIRVCodeGenerator& fGen; |
| const SpvId fVecPointer; |
| const std::vector<int>& fComponents; |
| const Type& fBaseType; |
| const Type& fSwizzleType; |
| }; |
| |
| std::unique_ptr<SPIRVCodeGenerator::LValue> SPIRVCodeGenerator::getLValue(const Expression& expr, |
| SkWStream& out) { |
| switch (expr.fKind) { |
| case Expression::kVariableReference_Kind: { |
| const Variable& var = ((VariableReference&) expr).fVariable; |
| auto entry = fVariableMap.find(&var); |
| ASSERT(entry != fVariableMap.end()); |
| return std::unique_ptr<SPIRVCodeGenerator::LValue>(new PointerLValue( |
| *this, |
| entry->second, |
| this->getType(expr.fType))); |
| } |
| case Expression::kIndex_Kind: // fall through |
| case Expression::kFieldAccess_Kind: { |
| std::vector<SpvId> chain = this->getAccessChain(expr, out); |
| SpvId member = this->nextId(); |
| this->writeOpCode(SpvOpAccessChain, (SpvId) (3 + chain.size()), out); |
| this->writeWord(this->getPointerType(expr.fType, get_storage_class(expr)), out); |
| this->writeWord(member, out); |
| for (SpvId idx : chain) { |
| this->writeWord(idx, out); |
| } |
| return std::unique_ptr<SPIRVCodeGenerator::LValue>(new PointerLValue( |
| *this, |
| member, |
| this->getType(expr.fType))); |
| } |
| |
| case Expression::kSwizzle_Kind: { |
| Swizzle& swizzle = (Swizzle&) expr; |
| size_t count = swizzle.fComponents.size(); |
| SpvId base = this->getLValue(*swizzle.fBase, out)->getPointer(); |
| ASSERT(base); |
| if (count == 1) { |
| IntLiteral index(fContext, Position(), swizzle.fComponents[0]); |
| SpvId member = this->nextId(); |
| this->writeInstruction(SpvOpAccessChain, |
| this->getPointerType(swizzle.fType, |
| get_storage_class(*swizzle.fBase)), |
| member, |
| base, |
| this->writeIntLiteral(index), |
| out); |
| return std::unique_ptr<SPIRVCodeGenerator::LValue>(new PointerLValue( |
| *this, |
| member, |
| this->getType(expr.fType))); |
| } else { |
| return std::unique_ptr<SPIRVCodeGenerator::LValue>(new SwizzleLValue( |
| *this, |
| base, |
| swizzle.fComponents, |
| swizzle.fBase->fType, |
| expr.fType)); |
| } |
| } |
| |
| default: |
| // expr isn't actually an lvalue, create a dummy variable for it. This case happens due |
| // to the need to store values in temporary variables during function calls (see |
| // comments in getFunctionType); erroneous uses of rvalues as lvalues should have been |
| // caught by IRGenerator |
| SpvId result = this->nextId(); |
| SpvId type = this->getPointerType(expr.fType, SpvStorageClassFunction); |
| this->writeInstruction(SpvOpVariable, type, result, SpvStorageClassFunction, |
| fVariableBuffer); |
| this->writeInstruction(SpvOpStore, result, this->writeExpression(expr, out), out); |
| return std::unique_ptr<SPIRVCodeGenerator::LValue>(new PointerLValue( |
| *this, |
| result, |
| this->getType(expr.fType))); |
| } |
| } |
| |
| SpvId SPIRVCodeGenerator::writeVariableReference(const VariableReference& ref, SkWStream& out) { |
| SpvId result = this->nextId(); |
| auto entry = fVariableMap.find(&ref.fVariable); |
| ASSERT(entry != fVariableMap.end()); |
| SpvId var = entry->second; |
| this->writeInstruction(SpvOpLoad, this->getType(ref.fVariable.fType), result, var, out); |
| if (ref.fVariable.fModifiers.fLayout.fBuiltin == SK_FRAGCOORD_BUILTIN && |
| fProgram.fSettings.fFlipY) { |
| // need to remap to a top-left coordinate system |
| if (fRTHeightStructId == (SpvId) -1) { |
| // height variable hasn't been written yet |
| std::shared_ptr<SymbolTable> st(new SymbolTable(fErrors)); |
| ASSERT(fRTHeightFieldIndex == (SpvId) -1); |
| std::vector<Type::Field> fields; |
| fields.emplace_back(Modifiers(), SkString(SKSL_RTHEIGHT_NAME), |
| fContext.fFloat_Type.get()); |
| SkString name("sksl_synthetic_uniforms"); |
| Type intfStruct(Position(), name, fields); |
| Layout layout(-1, -1, 1, -1, -1, -1, -1, false, false, false, Layout::Format::kUnspecified, |
| false); |
| Variable intfVar(Position(), Modifiers(layout, Modifiers::kUniform_Flag), name, |
| intfStruct, Variable::kGlobal_Storage); |
| InterfaceBlock intf(Position(), intfVar, st); |
| fRTHeightStructId = this->writeInterfaceBlock(intf); |
| fRTHeightFieldIndex = 0; |
| } |
| ASSERT(fRTHeightFieldIndex != (SpvId) -1); |
| // write vec4(gl_FragCoord.x, u_skRTHeight - gl_FragCoord.y, 0.0, 1.0) |
| SpvId xId = this->nextId(); |
| this->writeInstruction(SpvOpCompositeExtract, this->getType(*fContext.fFloat_Type), xId, |
| result, 0, out); |
| IntLiteral fieldIndex(fContext, Position(), fRTHeightFieldIndex); |
| SpvId fieldIndexId = this->writeIntLiteral(fieldIndex); |
| SpvId heightPtr = this->nextId(); |
| this->writeOpCode(SpvOpAccessChain, 5, out); |
| this->writeWord(this->getPointerType(*fContext.fFloat_Type, SpvStorageClassUniform), out); |
| this->writeWord(heightPtr, out); |
| this->writeWord(fRTHeightStructId, out); |
| this->writeWord(fieldIndexId, out); |
| SpvId heightRead = this->nextId(); |
| this->writeInstruction(SpvOpLoad, this->getType(*fContext.fFloat_Type), heightRead, |
| heightPtr, out); |
| SpvId rawYId = this->nextId(); |
| this->writeInstruction(SpvOpCompositeExtract, this->getType(*fContext.fFloat_Type), rawYId, |
| result, 1, out); |
| SpvId flippedYId = this->nextId(); |
| this->writeInstruction(SpvOpFSub, this->getType(*fContext.fFloat_Type), flippedYId, |
| heightRead, rawYId, out); |
| FloatLiteral zero(fContext, Position(), 0.0); |
| SpvId zeroId = writeFloatLiteral(zero); |
| FloatLiteral one(fContext, Position(), 1.0); |
| SpvId oneId = writeFloatLiteral(one); |
| SpvId flipped = this->nextId(); |
| this->writeOpCode(SpvOpCompositeConstruct, 7, out); |
| this->writeWord(this->getType(*fContext.fVec4_Type), out); |
| this->writeWord(flipped, out); |
| this->writeWord(xId, out); |
| this->writeWord(flippedYId, out); |
| this->writeWord(zeroId, out); |
| this->writeWord(oneId, out); |
| return flipped; |
| } |
| return result; |
| } |
| |
| SpvId SPIRVCodeGenerator::writeIndexExpression(const IndexExpression& expr, SkWStream& out) { |
| return getLValue(expr, out)->load(out); |
| } |
| |
| SpvId SPIRVCodeGenerator::writeFieldAccess(const FieldAccess& f, SkWStream& out) { |
| return getLValue(f, out)->load(out); |
| } |
| |
| SpvId SPIRVCodeGenerator::writeSwizzle(const Swizzle& swizzle, SkWStream& out) { |
| SpvId base = this->writeExpression(*swizzle.fBase, out); |
| SpvId result = this->nextId(); |
| size_t count = swizzle.fComponents.size(); |
| if (count == 1) { |
| this->writeInstruction(SpvOpCompositeExtract, this->getType(swizzle.fType), result, base, |
| swizzle.fComponents[0], out); |
| } else { |
| this->writeOpCode(SpvOpVectorShuffle, 5 + (int32_t) count, out); |
| this->writeWord(this->getType(swizzle.fType), out); |
| this->writeWord(result, out); |
| this->writeWord(base, out); |
| this->writeWord(base, out); |
| for (int component : swizzle.fComponents) { |
| this->writeWord(component, out); |
| } |
| } |
| return result; |
| } |
| |
| SpvId SPIRVCodeGenerator::writeBinaryOperation(const Type& resultType, |
| const Type& operandType, SpvId lhs, |
| SpvId rhs, SpvOp_ ifFloat, SpvOp_ ifInt, |
| SpvOp_ ifUInt, SpvOp_ ifBool, SkWStream& out) { |
| SpvId result = this->nextId(); |
| if (is_float(fContext, operandType)) { |
| this->writeInstruction(ifFloat, this->getType(resultType), result, lhs, rhs, out); |
| } else if (is_signed(fContext, operandType)) { |
| this->writeInstruction(ifInt, this->getType(resultType), result, lhs, rhs, out); |
| } else if (is_unsigned(fContext, operandType)) { |
| this->writeInstruction(ifUInt, this->getType(resultType), result, lhs, rhs, out); |
| } else if (operandType == *fContext.fBool_Type) { |
| this->writeInstruction(ifBool, this->getType(resultType), result, lhs, rhs, out); |
| } else { |
| ABORT("invalid operandType: %s", operandType.description().c_str()); |
| } |
| return result; |
| } |
| |
| bool is_assignment(Token::Kind op) { |
| switch (op) { |
| case Token::EQ: // fall through |
| case Token::PLUSEQ: // fall through |
| case Token::MINUSEQ: // fall through |
| case Token::STAREQ: // fall through |
| case Token::SLASHEQ: // fall through |
| case Token::PERCENTEQ: // fall through |
| case Token::SHLEQ: // fall through |
| case Token::SHREQ: // fall through |
| case Token::BITWISEOREQ: // fall through |
| case Token::BITWISEXOREQ: // fall through |
| case Token::BITWISEANDEQ: // fall through |
| case Token::LOGICALOREQ: // fall through |
| case Token::LOGICALXOREQ: // fall through |
| case Token::LOGICALANDEQ: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| SpvId SPIRVCodeGenerator::writeBinaryExpression(const BinaryExpression& b, SkWStream& out) { |
| // handle cases where we don't necessarily evaluate both LHS and RHS |
| switch (b.fOperator) { |
| case Token::EQ: { |
| SpvId rhs = this->writeExpression(*b.fRight, out); |
| this->getLValue(*b.fLeft, out)->store(rhs, out); |
| return rhs; |
| } |
| case Token::LOGICALAND: |
| return this->writeLogicalAnd(b, out); |
| case Token::LOGICALOR: |
| return this->writeLogicalOr(b, out); |
| default: |
| break; |
| } |
| |
| // "normal" operators |
| const Type& resultType = b.fType; |
| std::unique_ptr<LValue> lvalue; |
| SpvId lhs; |
| if (is_assignment(b.fOperator)) { |
| lvalue = this->getLValue(*b.fLeft, out); |
| lhs = lvalue->load(out); |
| } else { |
| lvalue = nullptr; |
| lhs = this->writeExpression(*b.fLeft, out); |
| } |
| SpvId rhs = this->writeExpression(*b.fRight, out); |
| // component type we are operating on: float, int, uint |
| const Type* operandType; |
| // IR allows mismatched types in expressions (e.g. vec2 * float), but they need special handling |
| // in SPIR-V |
| if (b.fLeft->fType != b.fRight->fType) { |
| if (b.fLeft->fType.kind() == Type::kVector_Kind && |
| b.fRight->fType.isNumber()) { |
| // promote number to vector |
| SpvId vec = this->nextId(); |
| this->writeOpCode(SpvOpCompositeConstruct, 3 + b.fType.columns(), out); |
| this->writeWord(this->getType(resultType), out); |
| this->writeWord(vec, out); |
| for (int i = 0; i < resultType.columns(); i++) { |
| this->writeWord(rhs, out); |
| } |
| rhs = vec; |
| operandType = &b.fRight->fType; |
| } else if (b.fRight->fType.kind() == Type::kVector_Kind && |
| b.fLeft->fType.isNumber()) { |
| // promote number to vector |
| SpvId vec = this->nextId(); |
| this->writeOpCode(SpvOpCompositeConstruct, 3 + b.fType.columns(), out); |
| this->writeWord(this->getType(resultType), out); |
| this->writeWord(vec, out); |
| for (int i = 0; i < resultType.columns(); i++) { |
| this->writeWord(lhs, out); |
| } |
| lhs = vec; |
| ASSERT(!lvalue); |
| operandType = &b.fLeft->fType; |
| } else if (b.fLeft->fType.kind() == Type::kMatrix_Kind) { |
| SpvOp_ op; |
| if (b.fRight->fType.kind() == Type::kMatrix_Kind) { |
| op = SpvOpMatrixTimesMatrix; |
| } else if (b.fRight->fType.kind() == Type::kVector_Kind) { |
| op = SpvOpMatrixTimesVector; |
| } else { |
| ASSERT(b.fRight->fType.kind() == Type::kScalar_Kind); |
| op = SpvOpMatrixTimesScalar; |
| } |
| SpvId result = this->nextId(); |
| this->writeInstruction(op, this->getType(b.fType), result, lhs, rhs, out); |
| if (b.fOperator == Token::STAREQ) { |
| lvalue->store(result, out); |
| } else { |
| ASSERT(b.fOperator == Token::STAR); |
| } |
| return result; |
| } else if (b.fRight->fType.kind() == Type::kMatrix_Kind) { |
| SpvId result = this->nextId(); |
| if (b.fLeft->fType.kind() == Type::kVector_Kind) { |
| this->writeInstruction(SpvOpVectorTimesMatrix, this->getType(b.fType), result, |
| lhs, rhs, out); |
| } else { |
| ASSERT(b.fLeft->fType.kind() == Type::kScalar_Kind); |
| this->writeInstruction(SpvOpMatrixTimesScalar, this->getType(b.fType), result, rhs, |
| lhs, out); |
| } |
| if (b.fOperator == Token::STAREQ) { |
| lvalue->store(result, out); |
| } else { |
| ASSERT(b.fOperator == Token::STAR); |
| } |
| return result; |
| } else { |
| ABORT("unsupported binary expression: %s", b.description().c_str()); |
| } |
| } else { |
| operandType = &b.fLeft->fType; |
| ASSERT(*operandType == b.fRight->fType); |
| } |
| switch (b.fOperator) { |
| case Token::EQEQ: |
| ASSERT(resultType == *fContext.fBool_Type); |
| return this->writeBinaryOperation(resultType, *operandType, lhs, rhs, SpvOpFOrdEqual, |
| SpvOpIEqual, SpvOpIEqual, SpvOpLogicalEqual, out); |
| case Token::NEQ: |
| ASSERT(resultType == *fContext.fBool_Type); |
| return this->writeBinaryOperation(resultType, *operandType, lhs, rhs, SpvOpFOrdNotEqual, |
| SpvOpINotEqual, SpvOpINotEqual, SpvOpLogicalNotEqual, |
| out); |
| case Token::GT: |
| ASSERT(resultType == *fContext.fBool_Type); |
| return this->writeBinaryOperation(resultType, *operandType, lhs, rhs, |
| SpvOpFOrdGreaterThan, SpvOpSGreaterThan, |
| SpvOpUGreaterThan, SpvOpUndef, out); |
| case Token::LT: |
| ASSERT(resultType == *fContext.fBool_Type); |
| return this->writeBinaryOperation(resultType, *operandType, lhs, rhs, SpvOpFOrdLessThan, |
| SpvOpSLessThan, SpvOpULessThan, SpvOpUndef, out); |
| case Token::GTEQ: |
| ASSERT(resultType == *fContext.fBool_Type); |
| return this->writeBinaryOperation(resultType, *operandType, lhs, rhs, |
| SpvOpFOrdGreaterThanEqual, SpvOpSGreaterThanEqual, |
| SpvOpUGreaterThanEqual, SpvOpUndef, out); |
| case Token::LTEQ: |
| ASSERT(resultType == *fContext.fBool_Type); |
| return this->writeBinaryOperation(resultType, *operandType, lhs, rhs, |
| SpvOpFOrdLessThanEqual, SpvOpSLessThanEqual, |
| SpvOpULessThanEqual, SpvOpUndef, out); |
| case Token::PLUS: |
| return this->writeBinaryOperation(resultType, *operandType, lhs, rhs, SpvOpFAdd, |
| SpvOpIAdd, SpvOpIAdd, SpvOpUndef, out); |
| case Token::MINUS: |
| return this->writeBinaryOperation(resultType, *operandType, lhs, rhs, SpvOpFSub, |
| SpvOpISub, SpvOpISub, SpvOpUndef, out); |
| case Token::STAR: |
| if (b.fLeft->fType.kind() == Type::kMatrix_Kind && |
| b.fRight->fType.kind() == Type::kMatrix_Kind) { |
| // matrix multiply |
| SpvId result = this->nextId(); |
| this->writeInstruction(SpvOpMatrixTimesMatrix, this->getType(resultType), result, |
| lhs, rhs, out); |
| return result; |
| } |
| return this->writeBinaryOperation(resultType, *operandType, lhs, rhs, SpvOpFMul, |
| SpvOpIMul, SpvOpIMul, SpvOpUndef, out); |
| case Token::SLASH: |
| return this->writeBinaryOperation(resultType, *operandType, lhs, rhs, SpvOpFDiv, |
| SpvOpSDiv, SpvOpUDiv, SpvOpUndef, out); |
| case Token::PLUSEQ: { |
| SpvId result = this->writeBinaryOperation(resultType, *operandType, lhs, rhs, SpvOpFAdd, |
| SpvOpIAdd, SpvOpIAdd, SpvOpUndef, out); |
| ASSERT(lvalue); |
| lvalue->store(result, out); |
| return result; |
| } |
| case Token::MINUSEQ: { |
| SpvId result = this->writeBinaryOperation(resultType, *operandType, lhs, rhs, SpvOpFSub, |
| SpvOpISub, SpvOpISub, SpvOpUndef, out); |
| ASSERT(lvalue); |
| lvalue->store(result, out); |
| return result; |
| } |
| case Token::STAREQ: { |
| if (b.fLeft->fType.kind() == Type::kMatrix_Kind && |
| b.fRight->fType.kind() == Type::kMatrix_Kind) { |
| // matrix multiply |
| SpvId result = this->nextId(); |
| this->writeInstruction(SpvOpMatrixTimesMatrix, this->getType(resultType), result, |
| lhs, rhs, out); |
| ASSERT(lvalue); |
| lvalue->store(result, out); |
| return result; |
| } |
| SpvId result = this->writeBinaryOperation(resultType, *operandType, lhs, rhs, SpvOpFMul, |
| SpvOpIMul, SpvOpIMul, SpvOpUndef, out); |
| ASSERT(lvalue); |
| lvalue->store(result, out); |
| return result; |
| } |
| case Token::SLASHEQ: { |
| SpvId result = this->writeBinaryOperation(resultType, *operandType, lhs, rhs, SpvOpFDiv, |
| SpvOpSDiv, SpvOpUDiv, SpvOpUndef, out); |
| ASSERT(lvalue); |
| lvalue->store(result, out); |
| return result; |
| } |
| default: |
| // FIXME: missing support for some operators (bitwise, &&=, ||=, shift...) |
| ABORT("unsupported binary expression: %s", b.description().c_str()); |
| } |
| } |
| |
| SpvId SPIRVCodeGenerator::writeLogicalAnd(const BinaryExpression& a, SkWStream& out) { |
| ASSERT(a.fOperator == Token::LOGICALAND); |
| BoolLiteral falseLiteral(fContext, Position(), false); |
| SpvId falseConstant = this->writeBoolLiteral(falseLiteral); |
| SpvId lhs = this->writeExpression(*a.fLeft, out); |
| SpvId rhsLabel = this->nextId(); |
| SpvId end = this->nextId(); |
| SpvId lhsBlock = fCurrentBlock; |
| this->writeInstruction(SpvOpSelectionMerge, end, SpvSelectionControlMaskNone, out); |
| this->writeInstruction(SpvOpBranchConditional, lhs, rhsLabel, end, out); |
| this->writeLabel(rhsLabel, out); |
| SpvId rhs = this->writeExpression(*a.fRight, out); |
| SpvId rhsBlock = fCurrentBlock; |
| this->writeInstruction(SpvOpBranch, end, out); |
| this->writeLabel(end, out); |
| SpvId result = this->nextId(); |
| this->writeInstruction(SpvOpPhi, this->getType(*fContext.fBool_Type), result, falseConstant, |
| lhsBlock, rhs, rhsBlock, out); |
| return result; |
| } |
| |
| SpvId SPIRVCodeGenerator::writeLogicalOr(const BinaryExpression& o, SkWStream& out) { |
| ASSERT(o.fOperator == Token::LOGICALOR); |
| BoolLiteral trueLiteral(fContext, Position(), true); |
| SpvId trueConstant = this->writeBoolLiteral(trueLiteral); |
| SpvId lhs = this->writeExpression(*o.fLeft, out); |
| SpvId rhsLabel = this->nextId(); |
| SpvId end = this->nextId(); |
| SpvId lhsBlock = fCurrentBlock; |
| this->writeInstruction(SpvOpSelectionMerge, end, SpvSelectionControlMaskNone, out); |
| this->writeInstruction(SpvOpBranchConditional, lhs, end, rhsLabel, out); |
| this->writeLabel(rhsLabel, out); |
| SpvId rhs = this->writeExpression(*o.fRight, out); |
| SpvId rhsBlock = fCurrentBlock; |
| this->writeInstruction(SpvOpBranch, end, out); |
| this->writeLabel(end, out); |
| SpvId result = this->nextId(); |
| this->writeInstruction(SpvOpPhi, this->getType(*fContext.fBool_Type), result, trueConstant, |
| lhsBlock, rhs, rhsBlock, out); |
| return result; |
| } |
| |
| SpvId SPIRVCodeGenerator::writeTernaryExpression(const TernaryExpression& t, SkWStream& out) { |
| SpvId test = this->writeExpression(*t.fTest, out); |
| if (t.fIfTrue->isConstant() && t.fIfFalse->isConstant()) { |
| // both true and false are constants, can just use OpSelect |
| SpvId result = this->nextId(); |
| SpvId trueId = this->writeExpression(*t.fIfTrue, out); |
| SpvId falseId = this->writeExpression(*t.fIfFalse, out); |
| this->writeInstruction(SpvOpSelect, this->getType(t.fType), result, test, trueId, falseId, |
| out); |
| return result; |
| } |
| // was originally using OpPhi to choose the result, but for some reason that is crashing on |
| // Adreno. Switched to storing the result in a temp variable as glslang does. |
| SpvId var = this->nextId(); |
| this->writeInstruction(SpvOpVariable, this->getPointerType(t.fType, SpvStorageClassFunction), |
| var, SpvStorageClassFunction, fVariableBuffer); |
| SpvId trueLabel = this->nextId(); |
| SpvId falseLabel = this->nextId(); |
| SpvId end = this->nextId(); |
| this->writeInstruction(SpvOpSelectionMerge, end, SpvSelectionControlMaskNone, out); |
| this->writeInstruction(SpvOpBranchConditional, test, trueLabel, falseLabel, out); |
| this->writeLabel(trueLabel, out); |
| this->writeInstruction(SpvOpStore, var, this->writeExpression(*t.fIfTrue, out), out); |
| this->writeInstruction(SpvOpBranch, end, out); |
| this->writeLabel(falseLabel, out); |
| this->writeInstruction(SpvOpStore, var, this->writeExpression(*t.fIfFalse, out), out); |
| this->writeInstruction(SpvOpBranch, end, out); |
| this->writeLabel(end, out); |
| SpvId result = this->nextId(); |
| this->writeInstruction(SpvOpLoad, this->getType(t.fType), result, var, out); |
| return result; |
| } |
| |
| std::unique_ptr<Expression> create_literal_1(const Context& context, const Type& type) { |
| if (type == *context.fInt_Type) { |
| return std::unique_ptr<Expression>(new IntLiteral(context, Position(), 1)); |
| } |
| else if (type == *context.fFloat_Type) { |
| return std::unique_ptr<Expression>(new FloatLiteral(context, Position(), 1.0)); |
| } else { |
| ABORT("math is unsupported on type '%s'") |
| } |
| } |
| |
| SpvId SPIRVCodeGenerator::writePrefixExpression(const PrefixExpression& p, SkWStream& out) { |
| if (p.fOperator == Token::MINUS) { |
| SpvId result = this->nextId(); |
| SpvId typeId = this->getType(p.fType); |
| SpvId expr = this->writeExpression(*p.fOperand, out); |
| if (is_float(fContext, p.fType)) { |
| this->writeInstruction(SpvOpFNegate, typeId, result, expr, out); |
| } else if (is_signed(fContext, p.fType)) { |
| this->writeInstruction(SpvOpSNegate, typeId, result, expr, out); |
| } else { |
| ABORT("unsupported prefix expression %s", p.description().c_str()); |
| }; |
| return result; |
| } |
| switch (p.fOperator) { |
| case Token::PLUS: |
| return this->writeExpression(*p.fOperand, out); |
| case Token::PLUSPLUS: { |
| std::unique_ptr<LValue> lv = this->getLValue(*p.fOperand, out); |
| SpvId one = this->writeExpression(*create_literal_1(fContext, p.fType), out); |
| SpvId result = this->writeBinaryOperation(p.fType, p.fType, lv->load(out), one, |
| SpvOpFAdd, SpvOpIAdd, SpvOpIAdd, SpvOpUndef, |
| out); |
| lv->store(result, out); |
| return result; |
| } |
| case Token::MINUSMINUS: { |
| std::unique_ptr<LValue> lv = this->getLValue(*p.fOperand, out); |
| SpvId one = this->writeExpression(*create_literal_1(fContext, p.fType), out); |
| SpvId result = this->writeBinaryOperation(p.fType, p.fType, lv->load(out), one, |
| SpvOpFSub, SpvOpISub, SpvOpISub, SpvOpUndef, |
| out); |
| lv->store(result, out); |
| return result; |
| } |
| case Token::LOGICALNOT: { |
| ASSERT(p.fOperand->fType == *fContext.fBool_Type); |
| SpvId result = this->nextId(); |
| this->writeInstruction(SpvOpLogicalNot, this->getType(p.fOperand->fType), result, |
| this->writeExpression(*p.fOperand, out), out); |
| return result; |
| } |
| case Token::BITWISENOT: { |
| SpvId result = this->nextId(); |
| this->writeInstruction(SpvOpNot, this->getType(p.fOperand->fType), result, |
| this->writeExpression(*p.fOperand, out), out); |
| return result; |
| } |
| default: |
| ABORT("unsupported prefix expression: %s", p.description().c_str()); |
| } |
| } |
| |
| SpvId SPIRVCodeGenerator::writePostfixExpression(const PostfixExpression& p, SkWStream& out) { |
| std::unique_ptr<LValue> lv = this->getLValue(*p.fOperand, out); |
| SpvId result = lv->load(out); |
| SpvId one = this->writeExpression(*create_literal_1(fContext, p.fType), out); |
| switch (p.fOperator) { |
| case Token::PLUSPLUS: { |
| SpvId temp = this->writeBinaryOperation(p.fType, p.fType, result, one, SpvOpFAdd, |
| SpvOpIAdd, SpvOpIAdd, SpvOpUndef, out); |
| lv->store(temp, out); |
| return result; |
| } |
| case Token::MINUSMINUS: { |
| SpvId temp = this->writeBinaryOperation(p.fType, p.fType, result, one, SpvOpFSub, |
| SpvOpISub, SpvOpISub, SpvOpUndef, out); |
| lv->store(temp, out); |
| return result; |
| } |
| default: |
| ABORT("unsupported postfix expression %s", p.description().c_str()); |
| } |
| } |
| |
| SpvId SPIRVCodeGenerator::writeBoolLiteral(const BoolLiteral& b) { |
| if (b.fValue) { |
| if (fBoolTrue == 0) { |
| fBoolTrue = this->nextId(); |
| this->writeInstruction(SpvOpConstantTrue, this->getType(b.fType), fBoolTrue, |
| fConstantBuffer); |
| } |
| return fBoolTrue; |
| } else { |
| if (fBoolFalse == 0) { |
| fBoolFalse = this->nextId(); |
| this->writeInstruction(SpvOpConstantFalse, this->getType(b.fType), fBoolFalse, |
| fConstantBuffer); |
| } |
| return fBoolFalse; |
| } |
| } |
| |
| SpvId SPIRVCodeGenerator::writeIntLiteral(const IntLiteral& i) { |
| if (i.fType == *fContext.fInt_Type) { |
| auto entry = fIntConstants.find(i.fValue); |
| if (entry == fIntConstants.end()) { |
| SpvId result = this->nextId(); |
| this->writeInstruction(SpvOpConstant, this->getType(i.fType), result, (SpvId) i.fValue, |
| fConstantBuffer); |
| fIntConstants[i.fValue] = result; |
| return result; |
| } |
| return entry->second; |
| } else { |
| ASSERT(i.fType == *fContext.fUInt_Type); |
| auto entry = fUIntConstants.find(i.fValue); |
| if (entry == fUIntConstants.end()) { |
| SpvId result = this->nextId(); |
| this->writeInstruction(SpvOpConstant, this->getType(i.fType), result, (SpvId) i.fValue, |
| fConstantBuffer); |
| fUIntConstants[i.fValue] = result; |
| return result; |
| } |
| return entry->second; |
| } |
| } |
| |
| SpvId SPIRVCodeGenerator::writeFloatLiteral(const FloatLiteral& f) { |
| if (f.fType == *fContext.fFloat_Type) { |
| float value = (float) f.fValue; |
| auto entry = fFloatConstants.find(value); |
| if (entry == fFloatConstants.end()) { |
| SpvId result = this->nextId(); |
| uint32_t bits; |
| ASSERT(sizeof(bits) == sizeof(value)); |
| memcpy(&bits, &value, sizeof(bits)); |
| this->writeInstruction(SpvOpConstant, this->getType(f.fType), result, bits, |
| fConstantBuffer); |
| fFloatConstants[value] = result; |
| return result; |
| } |
| return entry->second; |
| } else { |
| ASSERT(f.fType == *fContext.fDouble_Type); |
| auto entry = fDoubleConstants.find(f.fValue); |
| if (entry == fDoubleConstants.end()) { |
| SpvId result = this->nextId(); |
| uint64_t bits; |
| ASSERT(sizeof(bits) == sizeof(f.fValue)); |
| memcpy(&bits, &f.fValue, sizeof(bits)); |
| this->writeInstruction(SpvOpConstant, this->getType(f.fType), result, |
| bits & 0xffffffff, bits >> 32, fConstantBuffer); |
| fDoubleConstants[f.fValue] = result; |
| return result; |
| } |
| return entry->second; |
| } |
| } |
| |
| SpvId SPIRVCodeGenerator::writeFunctionStart(const FunctionDeclaration& f, SkWStream& out) { |
| SpvId result = fFunctionMap[&f]; |
| this->writeInstruction(SpvOpFunction, this->getType(f.fReturnType), result, |
| SpvFunctionControlMaskNone, this->getFunctionType(f), out); |
| this->writeInstruction(SpvOpName, result, f.fName.c_str(), fNameBuffer); |
| for (size_t i = 0; i < f.fParameters.size(); i++) { |
| SpvId id = this->nextId(); |
| fVariableMap[f.fParameters[i]] = id; |
| SpvId type; |
| type = this->getPointerType(f.fParameters[i]->fType, SpvStorageClassFunction); |
| this->writeInstruction(SpvOpFunctionParameter, type, id, out); |
| } |
| return result; |
| } |
| |
| SpvId SPIRVCodeGenerator::writeFunction(const FunctionDefinition& f, SkWStream& out) { |
| SpvId result = this->writeFunctionStart(f.fDeclaration, out); |
| this->writeLabel(this->nextId(), out); |
| if (f.fDeclaration.fName == "main") { |
| write_data(*fGlobalInitializersBuffer.detachAsData(), out); |
| } |
| SkDynamicMemoryWStream bodyBuffer; |
| this->writeBlock(*f.fBody, bodyBuffer); |
| write_data(*fVariableBuffer.detachAsData(), out); |
| write_data(*bodyBuffer.detachAsData(), out); |
| if (fCurrentBlock) { |
| this->writeInstruction(SpvOpReturn, out); |
| } |
| this->writeInstruction(SpvOpFunctionEnd, out); |
| return result; |
| } |
| |
| void SPIRVCodeGenerator::writeLayout(const Layout& layout, SpvId target) { |
| if (layout.fLocation >= 0) { |
| this->writeInstruction(SpvOpDecorate, target, SpvDecorationLocation, layout.fLocation, |
| fDecorationBuffer); |
| } |
| if (layout.fBinding >= 0) { |
| this->writeInstruction(SpvOpDecorate, target, SpvDecorationBinding, layout.fBinding, |
| fDecorationBuffer); |
| } |
| if (layout.fIndex >= 0) { |
| this->writeInstruction(SpvOpDecorate, target, SpvDecorationIndex, layout.fIndex, |
| fDecorationBuffer); |
| } |
| if (layout.fSet >= 0) { |
| this->writeInstruction(SpvOpDecorate, target, SpvDecorationDescriptorSet, layout.fSet, |
| fDecorationBuffer); |
| } |
| if (layout.fInputAttachmentIndex >= 0) { |
| this->writeInstruction(SpvOpDecorate, target, SpvDecorationInputAttachmentIndex, |
| layout.fInputAttachmentIndex, fDecorationBuffer); |
| } |
| if (layout.fBuiltin >= 0 && layout.fBuiltin != SK_FRAGCOLOR_BUILTIN) { |
| this->writeInstruction(SpvOpDecorate, target, SpvDecorationBuiltIn, layout.fBuiltin, |
| fDecorationBuffer); |
| } |
| } |
| |
| void SPIRVCodeGenerator::writeLayout(const Layout& layout, SpvId target, int member) { |
| if (layout.fLocation >= 0) { |
| this->writeInstruction(SpvOpMemberDecorate, target, member, SpvDecorationLocation, |
| layout.fLocation, fDecorationBuffer); |
| } |
| if (layout.fBinding >= 0) { |
| this->writeInstruction(SpvOpMemberDecorate, target, member, SpvDecorationBinding, |
| layout.fBinding, fDecorationBuffer); |
| } |
| if (layout.fIndex >= 0) { |
| this->writeInstruction(SpvOpMemberDecorate, target, member, SpvDecorationIndex, |
| layout.fIndex, fDecorationBuffer); |
| } |
| if (layout.fSet >= 0) { |
| this->writeInstruction(SpvOpMemberDecorate, target, member, SpvDecorationDescriptorSet, |
| layout.fSet, fDecorationBuffer); |
| } |
| if (layout.fInputAttachmentIndex >= 0) { |
| this->writeInstruction(SpvOpDecorate, target, member, SpvDecorationInputAttachmentIndex, |
| layout.fInputAttachmentIndex, fDecorationBuffer); |
| } |
| if (layout.fBuiltin >= 0) { |
| this->writeInstruction(SpvOpMemberDecorate, target, member, SpvDecorationBuiltIn, |
| layout.fBuiltin, fDecorationBuffer); |
| } |
| } |
| |
| SpvId SPIRVCodeGenerator::writeInterfaceBlock(const InterfaceBlock& intf) { |
| MemoryLayout layout = intf.fVariable.fModifiers.fLayout.fPushConstant ? |
| MemoryLayout(MemoryLayout::k430_Standard) : |
| fDefaultLayout; |
| SpvId result = this->nextId(); |
| const Type* type = &intf.fVariable.fType; |
| if (fProgram.fInputs.fRTHeight) { |
| ASSERT(fRTHeightStructId == (SpvId) -1); |
| ASSERT(fRTHeightFieldIndex == (SpvId) -1); |
| std::vector<Type::Field> fields = type->fields(); |
| fRTHeightStructId = result; |
| fRTHeightFieldIndex = fields.size(); |
| fields.emplace_back(Modifiers(), SkString(SKSL_RTHEIGHT_NAME), fContext.fFloat_Type.get()); |
| type = new Type(type->fPosition, type->name(), fields); |
| } |
| SpvId typeId = this->getType(*type, layout); |
| this->writeInstruction(SpvOpDecorate, typeId, SpvDecorationBlock, fDecorationBuffer); |
| SpvStorageClass_ storageClass = get_storage_class(intf.fVariable.fModifiers); |
| SpvId ptrType = this->nextId(); |
| this->writeInstruction(SpvOpTypePointer, ptrType, storageClass, typeId, fConstantBuffer); |
| this->writeInstruction(SpvOpVariable, ptrType, result, storageClass, fConstantBuffer); |
| this->writeLayout(intf.fVariable.fModifiers.fLayout, result); |
| fVariableMap[&intf.fVariable] = result; |
| return result; |
| } |
| |
| #define BUILTIN_IGNORE 9999 |
| void SPIRVCodeGenerator::writeGlobalVars(Program::Kind kind, const VarDeclarations& decl, |
| SkWStream& out) { |
| for (size_t i = 0; i < decl.fVars.size(); i++) { |
| const VarDeclaration& varDecl = decl.fVars[i]; |
| const Variable* var = varDecl.fVar; |
| // These haven't been implemented in our SPIR-V generator yet and we only currently use them |
| // in the OpenGL backend. |
| ASSERT(!(var->fModifiers.fFlags & (Modifiers::kReadOnly_Flag | |
| Modifiers::kWriteOnly_Flag | |
| Modifiers::kCoherent_Flag | |
| Modifiers::kVolatile_Flag | |
| Modifiers::kRestrict_Flag))); |
| if (var->fModifiers.fLayout.fBuiltin == BUILTIN_IGNORE) { |
| continue; |
| } |
| if (var->fModifiers.fLayout.fBuiltin == SK_FRAGCOLOR_BUILTIN && |
| kind != Program::kFragment_Kind) { |
| continue; |
| } |
| if (!var->fIsReadFrom && !var->fIsWrittenTo && |
| !(var->fModifiers.fFlags & (Modifiers::kIn_Flag | |
| Modifiers::kOut_Flag | |
| Modifiers::kUniform_Flag))) { |
| // variable is dead and not an input / output var (the Vulkan debug layers complain if |
| // we elide an interface var, even if it's dead) |
| continue; |
| } |
| SpvStorageClass_ storageClass; |
| if (var->fModifiers.fFlags & Modifiers::kIn_Flag) { |
| storageClass = SpvStorageClassInput; |
| } else if (var->fModifiers.fFlags & Modifiers::kOut_Flag) { |
| storageClass = SpvStorageClassOutput; |
| } else if (var->fModifiers.fFlags & Modifiers::kUniform_Flag) { |
| if (var->fType.kind() == Type::kSampler_Kind) { |
| storageClass = SpvStorageClassUniformConstant; |
| } else { |
| storageClass = SpvStorageClassUniform; |
| } |
| } else { |
| storageClass = SpvStorageClassPrivate; |
| } |
| SpvId id = this->nextId(); |
| fVariableMap[var] = id; |
| SpvId type = this->getPointerType(var->fType, storageClass); |
| this->writeInstruction(SpvOpVariable, type, id, storageClass, fConstantBuffer); |
| this->writeInstruction(SpvOpName, id, var->fName.c_str(), fNameBuffer); |
| if (var->fType.kind() == Type::kMatrix_Kind) { |
| this->writeInstruction(SpvOpMemberDecorate, id, (SpvId) i, SpvDecorationColMajor, |
| fDecorationBuffer); |
| this->writeInstruction(SpvOpMemberDecorate, id, (SpvId) i, SpvDecorationMatrixStride, |
| (SpvId) fDefaultLayout.stride(var->fType), fDecorationBuffer); |
| } |
| if (varDecl.fValue) { |
| ASSERT(!fCurrentBlock); |
| fCurrentBlock = -1; |
| SpvId value = this->writeExpression(*varDecl.fValue, fGlobalInitializersBuffer); |
| this->writeInstruction(SpvOpStore, id, value, fGlobalInitializersBuffer); |
| fCurrentBlock = 0; |
| } |
| this->writeLayout(var->fModifiers.fLayout, id); |
| } |
| } |
| |
| void SPIRVCodeGenerator::writeVarDeclarations(const VarDeclarations& decl, SkWStream& out) { |
| for (const auto& varDecl : decl.fVars) { |
| const Variable* var = varDecl.fVar; |
| // These haven't been implemented in our SPIR-V generator yet and we only currently use them |
| // in the OpenGL backend. |
| ASSERT(!(var->fModifiers.fFlags & (Modifiers::kReadOnly_Flag | |
| Modifiers::kWriteOnly_Flag | |
| Modifiers::kCoherent_Flag | |
| Modifiers::kVolatile_Flag | |
| Modifiers::kRestrict_Flag))); |
| SpvId id = this->nextId(); |
| fVariableMap[var] = id; |
| SpvId type = this->getPointerType(var->fType, SpvStorageClassFunction); |
| this->writeInstruction(SpvOpVariable, type, id, SpvStorageClassFunction, fVariableBuffer); |
| this->writeInstruction(SpvOpName, id, var->fName.c_str(), fNameBuffer); |
| if (varDecl.fValue) { |
| SpvId value = this->writeExpression(*varDecl.fValue, out); |
| this->writeInstruction(SpvOpStore, id, value, out); |
| } |
| } |
| } |
| |
| void SPIRVCodeGenerator::writeStatement(const Statement& s, SkWStream& out) { |
| switch (s.fKind) { |
| case Statement::kBlock_Kind: |
| this->writeBlock((Block&) s, out); |
| break; |
| case Statement::kExpression_Kind: |
| this->writeExpression(*((ExpressionStatement&) s).fExpression, out); |
| break; |
| case Statement::kReturn_Kind: |
| this->writeReturnStatement((ReturnStatement&) s, out); |
| break; |
| case Statement::kVarDeclarations_Kind: |
| this->writeVarDeclarations(*((VarDeclarationsStatement&) s).fDeclaration, out); |
| break; |
| case Statement::kIf_Kind: |
| this->writeIfStatement((IfStatement&) s, out); |
| break; |
| case Statement::kFor_Kind: |
| this->writeForStatement((ForStatement&) s, out); |
| break; |
| case Statement::kWhile_Kind: |
| this->writeWhileStatement((WhileStatement&) s, out); |
| break; |
| case Statement::kDo_Kind: |
| this->writeDoStatement((DoStatement&) s, out); |
| break; |
| case Statement::kBreak_Kind: |
| this->writeInstruction(SpvOpBranch, fBreakTarget.top(), out); |
| break; |
| case Statement::kContinue_Kind: |
| this->writeInstruction(SpvOpBranch, fContinueTarget.top(), out); |
| break; |
| case Statement::kDiscard_Kind: |
| this->writeInstruction(SpvOpKill, out); |
| break; |
| default: |
| ABORT("unsupported statement: %s", s.description().c_str()); |
| } |
| } |
| |
| void SPIRVCodeGenerator::writeBlock(const Block& b, SkWStream& out) { |
| for (size_t i = 0; i < b.fStatements.size(); i++) { |
| this->writeStatement(*b.fStatements[i], out); |
| } |
| } |
| |
| void SPIRVCodeGenerator::writeIfStatement(const IfStatement& stmt, SkWStream& out) { |
| SpvId test = this->writeExpression(*stmt.fTest, out); |
| SpvId ifTrue = this->nextId(); |
| SpvId ifFalse = this->nextId(); |
| if (stmt.fIfFalse) { |
| SpvId end = this->nextId(); |
| this->writeInstruction(SpvOpSelectionMerge, end, SpvSelectionControlMaskNone, out); |
| this->writeInstruction(SpvOpBranchConditional, test, ifTrue, ifFalse, out); |
| this->writeLabel(ifTrue, out); |
| this->writeStatement(*stmt.fIfTrue, out); |
| if (fCurrentBlock) { |
| this->writeInstruction(SpvOpBranch, end, out); |
| } |
| this->writeLabel(ifFalse, out); |
| this->writeStatement(*stmt.fIfFalse, out); |
| if (fCurrentBlock) { |
| this->writeInstruction(SpvOpBranch, end, out); |
| } |
| this->writeLabel(end, out); |
| } else { |
| this->writeInstruction(SpvOpSelectionMerge, ifFalse, SpvSelectionControlMaskNone, out); |
| this->writeInstruction(SpvOpBranchConditional, test, ifTrue, ifFalse, out); |
| this->writeLabel(ifTrue, out); |
| this->writeStatement(*stmt.fIfTrue, out); |
| if (fCurrentBlock) { |
| this->writeInstruction(SpvOpBranch, ifFalse, out); |
| } |
| this->writeLabel(ifFalse, out); |
| } |
| } |
| |
| void SPIRVCodeGenerator::writeForStatement(const ForStatement& f, SkWStream& out) { |
| if (f.fInitializer) { |
| this->writeStatement(*f.fInitializer, out); |
| } |
| SpvId header = this->nextId(); |
| SpvId start = this->nextId(); |
| SpvId body = this->nextId(); |
| SpvId next = this->nextId(); |
| fContinueTarget.push(next); |
| SpvId end = this->nextId(); |
| fBreakTarget.push(end); |
| this->writeInstruction(SpvOpBranch, header, out); |
| this->writeLabel(header, out); |
| this->writeInstruction(SpvOpLoopMerge, end, next, SpvLoopControlMaskNone, out); |
| this->writeInstruction(SpvOpBranch, start, out); |
| this->writeLabel(start, out); |
| if (f.fTest) { |
| SpvId test = this->writeExpression(*f.fTest, out); |
| this->writeInstruction(SpvOpBranchConditional, test, body, end, out); |
| } |
| this->writeLabel(body, out); |
| this->writeStatement(*f.fStatement, out); |
| if (fCurrentBlock) { |
| this->writeInstruction(SpvOpBranch, next, out); |
| } |
| this->writeLabel(next, out); |
| if (f.fNext) { |
| this->writeExpression(*f.fNext, out); |
| } |
| this->writeInstruction(SpvOpBranch, header, out); |
| this->writeLabel(end, out); |
| fBreakTarget.pop(); |
| fContinueTarget.pop(); |
| } |
| |
| void SPIRVCodeGenerator::writeWhileStatement(const WhileStatement& w, SkWStream& out) { |
| // We believe the while loop code below will work, but Skia doesn't actually use them and |
| // adequately testing this code in the absence of Skia exercising it isn't straightforward. For |
| // the time being, we just fail with an error due to the lack of testing. If you encounter this |
| // message, simply remove the error call below to see whether our while loop support actually |
| // works. |
| fErrors.error(w.fPosition, "internal error: while loop support has been disabled in SPIR-V, " |
| "see SkSLSPIRVCodeGenerator.cpp for details"); |
| |
| SpvId header = this->nextId(); |
| SpvId start = this->nextId(); |
| SpvId body = this->nextId(); |
| fContinueTarget.push(start); |
| SpvId end = this->nextId(); |
| fBreakTarget.push(end); |
| this->writeInstruction(SpvOpBranch, header, out); |
| this->writeLabel(header, out); |
| this->writeInstruction(SpvOpLoopMerge, end, start, SpvLoopControlMaskNone, out); |
| this->writeInstruction(SpvOpBranch, start, out); |
| this->writeLabel(start, out); |
| SpvId test = this->writeExpression(*w.fTest, out); |
| this->writeInstruction(SpvOpBranchConditional, test, body, end, out); |
| this->writeLabel(body, out); |
| this->writeStatement(*w.fStatement, out); |
| if (fCurrentBlock) { |
| this->writeInstruction(SpvOpBranch, start, out); |
| } |
| this->writeLabel(end, out); |
| fBreakTarget.pop(); |
| fContinueTarget.pop(); |
| } |
| |
| void SPIRVCodeGenerator::writeDoStatement(const DoStatement& d, SkWStream& out) { |
| // We believe the do loop code below will work, but Skia doesn't actually use them and |
| // adequately testing this code in the absence of Skia exercising it isn't straightforward. For |
| // the time being, we just fail with an error due to the lack of testing. If you encounter this |
| // message, simply remove the error call below to see whether our do loop support actually |
| // works. |
| fErrors.error(d.fPosition, "internal error: do loop support has been disabled in SPIR-V, see " |
| "SkSLSPIRVCodeGenerator.cpp for details"); |
| |
| SpvId header = this->nextId(); |
| SpvId start = this->nextId(); |
| SpvId next = this->nextId(); |
| fContinueTarget.push(next); |
| SpvId end = this->nextId(); |
| fBreakTarget.push(end); |
| this->writeInstruction(SpvOpBranch, header, out); |
| this->writeLabel(header, out); |
| this->writeInstruction(SpvOpLoopMerge, end, start, SpvLoopControlMaskNone, out); |
| this->writeInstruction(SpvOpBranch, start, out); |
| this->writeLabel(start, out); |
| this->writeStatement(*d.fStatement, out); |
| if (fCurrentBlock) { |
| this->writeInstruction(SpvOpBranch, next, out); |
| } |
| this->writeLabel(next, out); |
| SpvId test = this->writeExpression(*d.fTest, out); |
| this->writeInstruction(SpvOpBranchConditional, test, start, end, out); |
| this->writeLabel(end, out); |
| fBreakTarget.pop(); |
| fContinueTarget.pop(); |
| } |
| |
| void SPIRVCodeGenerator::writeReturnStatement(const ReturnStatement& r, SkWStream& out) { |
| if (r.fExpression) { |
| this->writeInstruction(SpvOpReturnValue, this->writeExpression(*r.fExpression, out), |
| out); |
| } else { |
| this->writeInstruction(SpvOpReturn, out); |
| } |
| } |
| |
| void SPIRVCodeGenerator::writeInstructions(const Program& program, SkWStream& out) { |
| fGLSLExtendedInstructions = this->nextId(); |
| SkDynamicMemoryWStream body; |
| std::vector<SpvId> interfaceVars; |
| // assign IDs to functions |
| for (size_t i = 0; i < program.fElements.size(); i++) { |
| if (program.fElements[i]->fKind == ProgramElement::kFunction_Kind) { |
| FunctionDefinition& f = (FunctionDefinition&) *program.fElements[i]; |
| fFunctionMap[&f.fDeclaration] = this->nextId(); |
| } |
| } |
| for (size_t i = 0; i < program.fElements.size(); i++) { |
| if (program.fElements[i]->fKind == ProgramElement::kInterfaceBlock_Kind) { |
| InterfaceBlock& intf = (InterfaceBlock&) *program.fElements[i]; |
| SpvId id = this->writeInterfaceBlock(intf); |
| if ((intf.fVariable.fModifiers.fFlags & Modifiers::kIn_Flag) || |
| (intf.fVariable.fModifiers.fFlags & Modifiers::kOut_Flag)) { |
| interfaceVars.push_back(id); |
| } |
| } |
| } |
| for (size_t i = 0; i < program.fElements.size(); i++) { |
| if (program.fElements[i]->fKind == ProgramElement::kVar_Kind) { |
| this->writeGlobalVars(program.fKind, ((VarDeclarations&) *program.fElements[i]), |
| body); |
| } |
| } |
| for (size_t i = 0; i < program.fElements.size(); i++) { |
| if (program.fElements[i]->fKind == ProgramElement::kFunction_Kind) { |
| this->writeFunction(((FunctionDefinition&) *program.fElements[i]), body); |
| } |
| } |
| const FunctionDeclaration* main = nullptr; |
| for (auto entry : fFunctionMap) { |
| if (entry.first->fName == "main") { |
| main = entry.first; |
| } |
| } |
| ASSERT(main); |
| for (auto entry : fVariableMap) { |
| const Variable* var = entry.first; |
| if (var->fStorage == Variable::kGlobal_Storage && |
| ((var->fModifiers.fFlags & Modifiers::kIn_Flag) || |
| (var->fModifiers.fFlags & Modifiers::kOut_Flag))) { |
| interfaceVars.push_back(entry.second); |
| } |
| } |
| this->writeCapabilities(out); |
| this->writeInstruction(SpvOpExtInstImport, fGLSLExtendedInstructions, "GLSL.std.450", out); |
| this->writeInstruction(SpvOpMemoryModel, SpvAddressingModelLogical, SpvMemoryModelGLSL450, out); |
| this->writeOpCode(SpvOpEntryPoint, (SpvId) (3 + (strlen(main->fName.c_str()) + 4) / 4) + |
| (int32_t) interfaceVars.size(), out); |
| switch (program.fKind) { |
| case Program::kVertex_Kind: |
| this->writeWord(SpvExecutionModelVertex, out); |
| break; |
| case Program::kFragment_Kind: |
| this->writeWord(SpvExecutionModelFragment, out); |
| break; |
| } |
| this->writeWord(fFunctionMap[main], out); |
| this->writeString(main->fName.c_str(), out); |
| for (int var : interfaceVars) { |
| this->writeWord(var, out); |
| } |
| if (program.fKind == Program::kFragment_Kind) { |
| this->writeInstruction(SpvOpExecutionMode, |
| fFunctionMap[main], |
| SpvExecutionModeOriginUpperLeft, |
| out); |
| } |
| for (size_t i = 0; i < program.fElements.size(); i++) { |
| if (program.fElements[i]->fKind == ProgramElement::kExtension_Kind) { |
| this->writeInstruction(SpvOpSourceExtension, |
| ((Extension&) *program.fElements[i]).fName.c_str(), |
| out); |
| } |
| } |
| |
| write_data(*fExtraGlobalsBuffer.detachAsData(), out); |
| write_data(*fNameBuffer.detachAsData(), out); |
| write_data(*fDecorationBuffer.detachAsData(), out); |
| write_data(*fConstantBuffer.detachAsData(), out); |
| write_data(*fExternalFunctionsBuffer.detachAsData(), out); |
| write_data(*body.detachAsData(), out); |
| } |
| |
| bool SPIRVCodeGenerator::generateCode() { |
| ASSERT(!fErrors.errorCount()); |
| this->writeWord(SpvMagicNumber, *fOut); |
| this->writeWord(SpvVersion, *fOut); |
| this->writeWord(SKSL_MAGIC, *fOut); |
| SkDynamicMemoryWStream buffer; |
| this->writeInstructions(fProgram, buffer); |
| this->writeWord(fIdCount, *fOut); |
| this->writeWord(0, *fOut); // reserved, always zero |
| write_data(*buffer.detachAsData(), *fOut); |
| return 0 == fErrors.errorCount(); |
| } |
| |
| } |
