92 lines
3.6 KiB
Plaintext
92 lines
3.6 KiB
Plaintext
/*
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* GLSLConversion.mm
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*
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* Copyright (c) 2015-2020 The Brenwill Workshop Ltd. (http://www.brenwill.com)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "GLSLConversion.h"
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#include "GLSLToSPIRVConverter.h"
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#include "MVKCommonEnvironment.h"
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#include <Foundation/Foundation.h>
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using namespace mvk;
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MVK_PUBLIC_SYMBOL bool mvkConvertGLSLToSPIRV(const char* glslSource,
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MVKGLSLConversionShaderStage shaderStage,
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uint32_t** pSPIRVCode,
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size_t *pSPIRVLength,
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char** pResultLog,
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bool shouldLogGLSL,
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bool shouldLogSPIRV) {
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GLSLToSPIRVConverter glslConverter;
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glslConverter.setGLSL(glslSource);
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bool wasConverted = glslConverter.convert(shaderStage, shouldLogGLSL, shouldLogSPIRV);
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size_t spvLen = 0;
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if (pSPIRVCode) {
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uint32_t* spvCode = NULL;
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if (wasConverted) {
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auto spv = glslConverter.getSPIRV();
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spvLen = spv.size() * sizeof(uint32_t);
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spvCode = (uint32_t*)malloc(spvLen);
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memcpy(spvCode, spv.data(), spvLen);
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}
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*pSPIRVCode = spvCode;
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}
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if (pSPIRVLength) { *pSPIRVLength = spvLen; }
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if (pResultLog) {
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auto log = glslConverter.getResultLog();
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*pResultLog = (char*)malloc(log.size() + 1);
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strcpy(*pResultLog, log.data());
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}
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return wasConverted;
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}
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MVK_PUBLIC_SYMBOL bool mvkConvertGLSLFileToSPIRV(const char* glslFilepath,
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MVKGLSLConversionShaderStage shaderStage,
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uint32_t** pSPIRVCode,
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size_t *pSPIRVLength,
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char** pResultLog,
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bool shouldLogGLSL,
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bool shouldLogSPIRV) {
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NSString* filePath = @(glslFilepath);
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if( !filePath.absolutePath ) {
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filePath =[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent: filePath];
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}
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NSError* err = nil;
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NSString* glslSource = [NSString stringWithContentsOfFile: filePath
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encoding: NSUTF8StringEncoding
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error: &err];
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if (err) {
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if (pResultLog) {
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NSString* errMsg = [NSString stringWithFormat: @"Unable to convert GLSL in file %@ to SPIR-V (Error code %li):\n%@",
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filePath, (long)err.code, err.localizedDescription];
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*pResultLog = (char*)malloc(errMsg.length + 1);
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strcpy(*pResultLog, errMsg.UTF8String);
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}
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if (pSPIRVCode) { *pSPIRVCode = NULL; }
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if (pSPIRVLength) { *pSPIRVLength = 0; }
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return false;
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}
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return mvkConvertGLSLToSPIRV(glslSource.UTF8String, shaderStage, pSPIRVCode, pSPIRVLength, pResultLog, shouldLogGLSL, shouldLogSPIRV);
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}
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