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/*
* Copyright 2023 Google LLC
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "src/gpu/PipelineUtils.h"
namespace skgpu {
static bool sksl_to_backend(SkSL::Compiler* compiler,
bool (SkSL::Compiler::*toBackend)(SkSL::Program&, std::string*),
const char* backendLabel,
const std::string& sksl,
SkSL::ProgramKind programKind,
const SkSL::ProgramSettings& settings,
std::string* output,
SkSL::Program::Interface* outInterface,
ShaderErrorHandler* errorHandler) {
#ifdef SK_DEBUG
std::string src = SkShaderUtils::PrettyPrint(sksl);
#else
const std::string& src = sksl;
#endif
std::unique_ptr<SkSL::Program> program = compiler->convertProgram(programKind,
src,
settings);
if (!program || !(compiler->*toBackend)(*program, output)) {
errorHandler->compileError(src.c_str(), compiler->errorText().c_str());
return false;
}
#if defined(SK_PRINT_SKSL_SHADERS)
const bool kPrintSkSL = true;
#else
const bool kPrintSkSL = false;
#endif
#if defined(SK_PRINT_NATIVE_SHADERS)
const bool printBackendSL = (backendLabel != nullptr);
#else
const bool printBackendSL = false;
#endif
if (kPrintSkSL || printBackendSL) {
SkShaderUtils::PrintShaderBanner(programKind);
if (kPrintSkSL) {
SkDebugf("SkSL:\n");
SkShaderUtils::PrintLineByLine(SkShaderUtils::PrettyPrint(sksl));
}
if (printBackendSL) {
SkDebugf("%s:\n", backendLabel);
SkShaderUtils::PrintLineByLine(*output);
}
}
if (outInterface) {
*outInterface = program->fInterface;
}
return true;
}
bool SkSLToGLSL(SkSL::Compiler* compiler,
const std::string& sksl,
SkSL::ProgramKind programKind,
const SkSL::ProgramSettings& settings,
std::string* glsl,
SkSL::Program::Interface* outInterface,
ShaderErrorHandler* errorHandler) {
return sksl_to_backend(compiler, &SkSL::Compiler::toGLSL, "GLSL",
sksl, programKind, settings, glsl, outInterface, errorHandler);
}
bool SkSLToSPIRV(SkSL::Compiler* compiler,
const std::string& sksl,
SkSL::ProgramKind programKind,
const SkSL::ProgramSettings& settings,
std::string* spirv,
SkSL::Program::Interface* outInterface,
ShaderErrorHandler* errorHandler) {
return sksl_to_backend(compiler, &SkSL::Compiler::toSPIRV, /*backendLabel=*/nullptr,
sksl, programKind, settings, spirv, outInterface, errorHandler);
}
bool SkSLToWGSL(SkSL::Compiler* compiler,
const std::string& sksl,
SkSL::ProgramKind programKind,
const SkSL::ProgramSettings& settings,
std::string* wgsl,
SkSL::Program::Interface* outInterface,
ShaderErrorHandler* errorHandler) {
return sksl_to_backend(compiler, &SkSL::Compiler::toWGSL, "WGSL",
sksl, programKind, settings, wgsl, outInterface, errorHandler);
}
bool SkSLToMSL(SkSL::Compiler* compiler,
const std::string& sksl,
SkSL::ProgramKind programKind,
const SkSL::ProgramSettings& settings,
std::string* msl,
SkSL::Program::Interface* outInterface,
ShaderErrorHandler* errorHandler) {
return sksl_to_backend(compiler, &SkSL::Compiler::toMetal, "MSL",
sksl, programKind, settings, msl, outInterface, errorHandler);
}
bool SkSLToHLSL(SkSL::Compiler* compiler,
const std::string& sksl,
SkSL::ProgramKind programKind,
const SkSL::ProgramSettings& settings,
std::string* hlsl,
SkSL::Program::Interface* outInterface,
ShaderErrorHandler* errorHandler) {
return sksl_to_backend(compiler, &SkSL::Compiler::toHLSL, "HLSL",
sksl, programKind, settings, hlsl, outInterface, errorHandler);
}
} // namespace skgpu
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