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/*
* 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 "SkSLCompiler.h"
#include <fstream>
#include <streambuf>
#include "ast/SkSLASTPrecision.h"
#include "SkSLIRGenerator.h"
#include "SkSLParser.h"
#include "SkSLSPIRVCodeGenerator.h"
#include "ir/SkSLExpression.h"
#include "ir/SkSLIntLiteral.h"
#include "ir/SkSLModifiersDeclaration.h"
#include "ir/SkSLSymbolTable.h"
#include "ir/SkSLVarDeclaration.h"
#include "SkMutex.h"
#define STRINGIFY(x) #x
// include the built-in shader symbols as static strings
static std::string SKSL_INCLUDE =
#include "sksl.include"
;
static std::string SKSL_VERT_INCLUDE =
#include "sksl_vert.include"
;
static std::string SKSL_FRAG_INCLUDE =
#include "sksl_frag.include"
;
namespace SkSL {
Compiler::Compiler()
: fErrorCount(0) {
auto types = std::shared_ptr<SymbolTable>(new SymbolTable(*this));
auto symbols = std::shared_ptr<SymbolTable>(new SymbolTable(types, *this));
fIRGenerator = new IRGenerator(&fContext, symbols, *this);
fTypes = types;
#define ADD_TYPE(t) types->addWithoutOwnership(fContext.f ## t ## _Type->fName, \
fContext.f ## t ## _Type.get())
ADD_TYPE(Void);
ADD_TYPE(Float);
ADD_TYPE(Vec2);
ADD_TYPE(Vec3);
ADD_TYPE(Vec4);
ADD_TYPE(Double);
ADD_TYPE(DVec2);
ADD_TYPE(DVec3);
ADD_TYPE(DVec4);
ADD_TYPE(Int);
ADD_TYPE(IVec2);
ADD_TYPE(IVec3);
ADD_TYPE(IVec4);
ADD_TYPE(UInt);
ADD_TYPE(UVec2);
ADD_TYPE(UVec3);
ADD_TYPE(UVec4);
ADD_TYPE(Bool);
ADD_TYPE(BVec2);
ADD_TYPE(BVec3);
ADD_TYPE(BVec4);
ADD_TYPE(Mat2x2);
types->addWithoutOwnership("mat2x2", fContext.fMat2x2_Type.get());
ADD_TYPE(Mat2x3);
ADD_TYPE(Mat2x4);
ADD_TYPE(Mat3x2);
ADD_TYPE(Mat3x3);
types->addWithoutOwnership("mat3x3", fContext.fMat3x3_Type.get());
ADD_TYPE(Mat3x4);
ADD_TYPE(Mat4x2);
ADD_TYPE(Mat4x3);
ADD_TYPE(Mat4x4);
types->addWithoutOwnership("mat4x4", fContext.fMat4x4_Type.get());
ADD_TYPE(GenType);
ADD_TYPE(GenDType);
ADD_TYPE(GenIType);
ADD_TYPE(GenUType);
ADD_TYPE(GenBType);
ADD_TYPE(Mat);
ADD_TYPE(Vec);
ADD_TYPE(GVec);
ADD_TYPE(GVec2);
ADD_TYPE(GVec3);
ADD_TYPE(GVec4);
ADD_TYPE(DVec);
ADD_TYPE(IVec);
ADD_TYPE(UVec);
ADD_TYPE(BVec);
ADD_TYPE(Sampler1D);
ADD_TYPE(Sampler2D);
ADD_TYPE(Sampler3D);
ADD_TYPE(SamplerExternalOES);
ADD_TYPE(SamplerCube);
ADD_TYPE(Sampler2DRect);
ADD_TYPE(Sampler1DArray);
ADD_TYPE(Sampler2DArray);
ADD_TYPE(SamplerCubeArray);
ADD_TYPE(SamplerBuffer);
ADD_TYPE(Sampler2DMS);
ADD_TYPE(Sampler2DMSArray);
ADD_TYPE(GSampler1D);
ADD_TYPE(GSampler2D);
ADD_TYPE(GSampler3D);
ADD_TYPE(GSamplerCube);
ADD_TYPE(GSampler2DRect);
ADD_TYPE(GSampler1DArray);
ADD_TYPE(GSampler2DArray);
ADD_TYPE(GSamplerCubeArray);
ADD_TYPE(GSamplerBuffer);
ADD_TYPE(GSampler2DMS);
ADD_TYPE(GSampler2DMSArray);
ADD_TYPE(Sampler1DShadow);
ADD_TYPE(Sampler2DShadow);
ADD_TYPE(SamplerCubeShadow);
ADD_TYPE(Sampler2DRectShadow);
ADD_TYPE(Sampler1DArrayShadow);
ADD_TYPE(Sampler2DArrayShadow);
ADD_TYPE(SamplerCubeArrayShadow);
ADD_TYPE(GSampler2DArrayShadow);
ADD_TYPE(GSamplerCubeArrayShadow);
Modifiers::Flag ignored1;
std::vector<std::unique_ptr<ProgramElement>> ignored2;
this->internalConvertProgram(SKSL_INCLUDE, &ignored1, &ignored2);
printf("%s", errorText().c_str());
ASSERT(!fErrorCount);
}
Compiler::~Compiler() {
delete fIRGenerator;
}
void Compiler::internalConvertProgram(std::string text,
Modifiers::Flag* defaultPrecision,
std::vector<std::unique_ptr<ProgramElement>>* result) {
Parser parser(text, *fTypes, *this);
std::vector<std::unique_ptr<ASTDeclaration>> parsed = parser.file();
if (fErrorCount) {
return;
}
*defaultPrecision = Modifiers::kHighp_Flag;
for (size_t i = 0; i < parsed.size(); i++) {
ASTDeclaration& decl = *parsed[i];
switch (decl.fKind) {
case ASTDeclaration::kVar_Kind: {
std::unique_ptr<VarDeclarations> s = fIRGenerator->convertVarDeclarations(
(ASTVarDeclarations&) decl,
Variable::kGlobal_Storage);
if (s) {
result->push_back(std::move(s));
}
break;
}
case ASTDeclaration::kFunction_Kind: {
std::unique_ptr<FunctionDefinition> f = fIRGenerator->convertFunction(
(ASTFunction&) decl);
if (f) {
result->push_back(std::move(f));
}
break;
}
case ASTDeclaration::kModifiers_Kind: {
std::unique_ptr<ModifiersDeclaration> f = fIRGenerator->convertModifiersDeclaration(
(ASTModifiersDeclaration&) decl);
if (f) {
result->push_back(std::move(f));
}
break;
}
case ASTDeclaration::kInterfaceBlock_Kind: {
std::unique_ptr<InterfaceBlock> i = fIRGenerator->convertInterfaceBlock(
(ASTInterfaceBlock&) decl);
if (i) {
result->push_back(std::move(i));
}
break;
}
case ASTDeclaration::kExtension_Kind: {
std::unique_ptr<Extension> e = fIRGenerator->convertExtension((ASTExtension&) decl);
if (e) {
result->push_back(std::move(e));
}
break;
}
case ASTDeclaration::kPrecision_Kind: {
*defaultPrecision = ((ASTPrecision&) decl).fPrecision;
break;
}
default:
ABORT("unsupported declaration: %s\n", decl.description().c_str());
}
}
}
std::unique_ptr<Program> Compiler::convertProgram(Program::Kind kind, std::string text) {
fErrorText = "";
fErrorCount = 0;
fIRGenerator->pushSymbolTable();
std::vector<std::unique_ptr<ProgramElement>> elements;
Modifiers::Flag ignored;
switch (kind) {
case Program::kVertex_Kind:
this->internalConvertProgram(SKSL_VERT_INCLUDE, &ignored, &elements);
break;
case Program::kFragment_Kind:
this->internalConvertProgram(SKSL_FRAG_INCLUDE, &ignored, &elements);
break;
}
Modifiers::Flag defaultPrecision;
this->internalConvertProgram(text, &defaultPrecision, &elements);
auto result = std::unique_ptr<Program>(new Program(kind, defaultPrecision, std::move(elements),
fIRGenerator->fSymbolTable));;
fIRGenerator->popSymbolTable();
this->writeErrorCount();
return result;
}
void Compiler::error(Position position, std::string msg) {
fErrorCount++;
fErrorText += "error: " + position.description() + ": " + msg.c_str() + "\n";
}
std::string Compiler::errorText() {
std::string result = fErrorText;
return result;
}
void Compiler::writeErrorCount() {
if (fErrorCount) {
fErrorText += to_string(fErrorCount) + " error";
if (fErrorCount > 1) {
fErrorText += "s";
}
fErrorText += "\n";
}
}
bool Compiler::toSPIRV(Program::Kind kind, const std::string& text, std::ostream& out) {
auto program = this->convertProgram(kind, text);
if (fErrorCount == 0) {
SkSL::SPIRVCodeGenerator cg(&fContext);
cg.generateCode(*program.get(), out);
ASSERT(!out.rdstate());
}
return fErrorCount == 0;
}
bool Compiler::toSPIRV(Program::Kind kind, const std::string& text, std::string* out) {
std::stringstream buffer;
bool result = this->toSPIRV(kind, text, buffer);
if (result) {
*out = buffer.str();
}
return result;
}
bool Compiler::toGLSL(Program::Kind kind, const std::string& text, GLCaps caps,
std::ostream& out) {
auto program = this->convertProgram(kind, text);
if (fErrorCount == 0) {
SkSL::GLSLCodeGenerator cg(&fContext, caps);
cg.generateCode(*program.get(), out);
ASSERT(!out.rdstate());
}
return fErrorCount == 0;
}
bool Compiler::toGLSL(Program::Kind kind, const std::string& text, GLCaps caps,
std::string* out) {
std::stringstream buffer;
bool result = this->toGLSL(kind, text, caps, buffer);
if (result) {
*out = buffer.str();
}
return result;
}
} // namespace