Here is the test code run in a macOS app (MacOS 15 Beta3). If the excutable path does not contain Chinese character, every thing go as We expect. Otherwise(simply place excutable in a Chinese named directory) , the MTLLibrary We made by newLibraryWithSource: function contains no functions, We just got logs:
"Library contains the following functions: {}"
"Function 'squareKernel' not found."
Note: macOS 14 works fine
id<MTLDevice> device = MTLCreateSystemDefaultDevice();
if (!device) {
NSLog(@"not support Metal.");
}
NSString *shaderSource = @
"#include <metal_stdlib>\n"
"using namespace metal;\n"
"kernel void squareKernel(device float* data [[buffer(0)]], uint gid [[thread_position_in_grid]]) {\n"
" data[gid] *= data[gid];\n"
"}";
MTLCompileOptions *options = [[MTLCompileOptions alloc] init];
options.languageVersion = MTLLanguageVersion2_0;
NSError *error = nil;
id<MTLLibrary> library = [device newLibraryWithSource:shaderSource options:options error:&error];
if (error) {
NSLog(@"New MTLLibrary error: %@", error);
}
NSArray<NSString *> *functionNames = [library functionNames];
NSLog(@"Library contains the following functions: %@", functionNames);
id<MTLFunction> computeShaderFunction = [library newFunctionWithName:@"squareKernel"];
if (computeShaderFunction) {
NSLog(@"Found function 'squareKernel'.");
NSError *pipelineError = nil;
id<MTLComputePipelineState> pipelineState = [device newComputePipelineStateWithFunction:computeShaderFunction error:&pipelineError];
if (pipelineError) {
NSLog(@"Create pipeline state error: %@", pipelineError);
}
NSLog(@"Create pipeline state succeed!");
} else {
NSLog(@"Function 'squareKernel' not found.");
}