// Compiles the given source GLSL and returns a SPIR-V binary module
// compilation result.
// Like the first CompileGlslToSpv method but uses default options.
SpvCompilationResult CompileGlslToSpv(const char* source_text,
size_t source_text_size,
shaderc_shader_kind shader_kind,
const char* input_file_name) const {
shaderc_compilation_result_t compilation_result =
shaderc_compile_into_spv(compiler_, source_text, source_text_size,
shader_kind, input_file_name, "main", nullptr);
return SpvCompilationResult(compilation_result);
}
// Compiles the given source GLSL and returns a SPIR-V binary module
// compilation result.
// The source_text parameter must be a valid pointer.
// The source_text_size parameter must be the length of the source text.
// The shader_kind parameter either forces the compilation to be done with a
// specified shader kind, or hint the compiler how to determine the exact
// shader kind. If the shader kind is set to shaderc_glslc_infer_from_source,
// the compiler will try to deduce the shader kind from the source string and
// a failure in this proess will generate an error. Currently only #pragma
// annotation is supported. If the shader kind is set to one of the default
// shader kinds, the compiler will fall back to the specified default shader
// kind in case it failed to deduce the shader kind from the source string.
// The input_file_name is a null-termintated string. It is used as a tag to
// identify the source string in cases like emitting error messages. It
// doesn't have to be a 'file name'.
// The entry_point_name parameter is a null-terminated string specifying
// the entry point name for HLSL compilation. For GLSL compilation, the
// entry point name is assumed to be "main".
// The compilation is passed any options specified in the CompileOptions
// parameter.
// It is valid for the returned CompilationResult object to outlive this
// compiler object.
// Note when the options_ has disassembly mode or preprocessing only mode set
// on, the returned CompilationResult will hold a text string, instead of a
// SPIR-V binary generated with default options.
SpvCompilationResult CompileGlslToSpv(const char* source_text,
size_t source_text_size,
shaderc_shader_kind shader_kind,
const char* input_file_name,
const char* entry_point_name,
const CompileOptions& options) const {
shaderc_compilation_result_t compilation_result = shaderc_compile_into_spv(
compiler_, source_text, source_text_size, shader_kind, input_file_name,
entry_point_name, options.options_);
return SpvCompilationResult(compilation_result);
}
bool GrVkPipelineStateBuilder::CreateVkShaderModule(const GrVkGpu* gpu,
VkShaderStageFlagBits stage,
const GrGLSLShaderBuilder& builder,
VkShaderModule* shaderModule,
VkPipelineShaderStageCreateInfo* stageInfo) {
SkString shaderString;
for (int i = 0; i < builder.fCompilerStrings.count(); ++i) {
if (builder.fCompilerStrings[i]) {
shaderString.append(builder.fCompilerStrings[i]);
shaderString.append("\n");
}
}
VkShaderModuleCreateInfo moduleCreateInfo;
memset(&moduleCreateInfo, 0, sizeof(VkShaderModuleCreateInfo));
moduleCreateInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
moduleCreateInfo.pNext = nullptr;
moduleCreateInfo.flags = 0;
shaderc_compilation_result_t result = nullptr;
if (gpu->vkCaps().canUseGLSLForShaderModule()) {
moduleCreateInfo.codeSize = strlen(shaderString.c_str());
moduleCreateInfo.pCode = (const uint32_t*)shaderString.c_str();
} else {
shaderc_compiler_t compiler = gpu->shadercCompiler();
shaderc_compile_options_t options = shaderc_compile_options_initialize();
shaderc_shader_kind shadercStage = vk_shader_stage_to_shaderc_kind(stage);
result = shaderc_compile_into_spv(compiler,
shaderString.c_str(),
strlen(shaderString.c_str()),
shadercStage,
"shader",
"main",
options);
shaderc_compile_options_release(options);
#ifdef SK_DEBUG
if (shaderc_result_get_num_errors(result)) {
SkDebugf("%s\n", shaderString.c_str());
SkDebugf("%s\n", shaderc_result_get_error_message(result));
return false;
}
#endif
moduleCreateInfo.codeSize = shaderc_result_get_length(result);
moduleCreateInfo.pCode = (const uint32_t*)shaderc_result_get_bytes(result);
}
VkResult err = GR_VK_CALL(gpu->vkInterface(), CreateShaderModule(gpu->device(),
&moduleCreateInfo,
nullptr,
shaderModule));
if (!gpu->vkCaps().canUseGLSLForShaderModule()) {
shaderc_result_release(result);
}
if (err) {
return false;
}
memset(stageInfo, 0, sizeof(VkPipelineShaderStageCreateInfo));
stageInfo->sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
stageInfo->pNext = nullptr;
stageInfo->flags = 0;
stageInfo->stage = stage;
stageInfo->module = *shaderModule;
stageInfo->pName = "main";
stageInfo->pSpecializationInfo = nullptr;
return true;
}
