blob: 972b2550148a8d6e9f6c73bd6bc383a7b70b3560 [file] [log] [blame]
/*
* GLSLConversion.mm
*
* Copyright (c) 2015-2021 The Brenwill Workshop Ltd. (http://www.brenwill.com)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "GLSLConversion.h"
#include "GLSLToSPIRVConverter.h"
#include "MVKCommonEnvironment.h"
#include <Foundation/Foundation.h>
using namespace mvk;
MVK_PUBLIC_SYMBOL bool mvkConvertGLSLToSPIRV(const char* glslSource,
MVKGLSLConversionShaderStage shaderStage,
uint32_t** pSPIRVCode,
size_t *pSPIRVLength,
char** pResultLog,
bool shouldLogGLSL,
bool shouldLogSPIRV) {
GLSLToSPIRVConverter glslConverter;
glslConverter.setGLSL(glslSource);
bool wasConverted = glslConverter.convert(shaderStage, shouldLogGLSL, shouldLogSPIRV);
size_t spvLen = 0;
if (pSPIRVCode) {
uint32_t* spvCode = NULL;
if (wasConverted) {
auto spv = glslConverter.getSPIRV();
spvLen = spv.size() * sizeof(uint32_t);
spvCode = (uint32_t*)malloc(spvLen);
memcpy(spvCode, spv.data(), spvLen);
}
*pSPIRVCode = spvCode;
}
if (pSPIRVLength) { *pSPIRVLength = spvLen; }
if (pResultLog) {
auto log = glslConverter.getResultLog();
*pResultLog = (char*)malloc(log.size() + 1);
strcpy(*pResultLog, log.data());
}
return wasConverted;
}
MVK_PUBLIC_SYMBOL bool mvkConvertGLSLFileToSPIRV(const char* glslFilepath,
MVKGLSLConversionShaderStage shaderStage,
uint32_t** pSPIRVCode,
size_t *pSPIRVLength,
char** pResultLog,
bool shouldLogGLSL,
bool shouldLogSPIRV) {
NSString* filePath = @(glslFilepath);
if( !filePath.absolutePath ) {
filePath =[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent: filePath];
}
NSError* err = nil;
NSString* glslSource = [NSString stringWithContentsOfFile: filePath
encoding: NSUTF8StringEncoding
error: &err];
if (err) {
if (pResultLog) {
NSString* errMsg = [NSString stringWithFormat: @"Unable to convert GLSL in file %@ to SPIR-V (Error code %li):\n%@",
filePath, (long)err.code, err.localizedDescription];
*pResultLog = (char*)malloc(errMsg.length + 1);
strcpy(*pResultLog, errMsg.UTF8String);
}
if (pSPIRVCode) { *pSPIRVCode = NULL; }
if (pSPIRVLength) { *pSPIRVLength = 0; }
return false;
}
return mvkConvertGLSLToSPIRV(glslSource.UTF8String, shaderStage, pSPIRVCode, pSPIRVLength, pResultLog, shouldLogGLSL, shouldLogSPIRV);
}