1 /* 2 * Copyright 2017 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SKSL_CPPCODEGENERATOR 9 #define SKSL_CPPCODEGENERATOR 10 11 #include "SkSLGLSLCodeGenerator.h" 12 #include "SkSLSectionAndParameterHelper.h" 13 14 #include <set> 15 16 namespace SkSL { 17 18 class CPPCodeGenerator : public GLSLCodeGenerator { 19 public: 20 CPPCodeGenerator(const Context* context, const Program* program, ErrorReporter* errors, 21 String name, OutputStream* out); 22 23 bool generateCode() override; 24 25 private: 26 void writef(const char* s, va_list va) SKSL_PRINTF_LIKE(2, 0); 27 28 void writef(const char* s, ...) SKSL_PRINTF_LIKE(2, 3); 29 30 void writeSection(const char* name, const char* prefix = ""); 31 32 void writeHeader() override; 33 34 void writePrecisionModifier() override; 35 36 void writeBinaryExpression(const BinaryExpression& b, Precedence parentPrecedence) override; 37 38 void writeIndexExpression(const IndexExpression& i) override; 39 40 void writeVariableReference(const VariableReference& ref) override; 41 42 String getSamplerHandle(const Variable& var); 43 44 void writeIfStatement(const IfStatement& s) override; 45 46 void writeSwitchStatement(const SwitchStatement& s) override; 47 48 void writeFunctionCall(const FunctionCall& c) override; 49 50 void writeFunction(const FunctionDefinition& f) override; 51 52 void writeSetting(const Setting& s) override; 53 54 void writeProgramElement(const ProgramElement& p) override; 55 56 void addUniform(const Variable& var); 57 58 // writes a printf escape that will be filled in at runtime by the given C++ expression string 59 void writeRuntimeValue(const Type& type, const String& cppCode); 60 61 void writeVarInitializer(const Variable& var, const Expression& value) override; 62 63 void writePrivateVars(); 64 65 void writePrivateVarValues(); 66 67 bool writeEmitCode(std::vector<const Variable*>& uniforms); 68 69 void writeSetData(std::vector<const Variable*>& uniforms); 70 71 void writeGetKey(); 72 73 void writeTest(); 74 75 String fName; 76 String fFullName; 77 SectionAndParameterHelper fSectionAndParameterHelper; 78 String fExtraEmitCodeCode; 79 std::vector<String> fFormatArgs; 80 std::set<int> fWrittenTransformedCoords; 81 bool fNeedColorSpaceHelper = false; 82 83 typedef GLSLCodeGenerator INHERITED; 84 }; 85 86 } 87 88 #endif 89