public void Glsl450EndToEnd(string vsName, string fsName)
{
Compilation compilation = TestUtil.GetTestProjectCompilation();
LanguageBackend backend = new Glsl450Backend(compilation);
ShaderGenerator sg = new ShaderGenerator(
compilation,
vsName,
fsName,
backend);
ShaderGenerationResult result = sg.GenerateShaders();
IReadOnlyList <GeneratedShaderSet> sets = result.GetOutput(backend);
Assert.Equal(1, sets.Count);
GeneratedShaderSet set = sets[0];
ShaderModel shaderModel = set.Model;
if (vsName != null)
{
ShaderFunction vsFunction = shaderModel.GetFunction(vsName);
string vsCode = set.VertexShaderCode;
GlsLangValidatorTool.AssertCompilesCode(vsCode, "vert", true);
}
if (fsName != null)
{
ShaderFunction fsFunction = shaderModel.GetFunction(fsName);
string fsCode = set.FragmentShaderCode;
GlsLangValidatorTool.AssertCompilesCode(fsCode, "frag", true);
}
}
public void DummyTest()
{
string vsName = "TestShaders.VeldridShaders.VertexAndFragment.VS";
string fsName = "TestShaders.VeldridShaders.VertexAndFragment.FS";
Compilation compilation = TestUtil.GetTestProjectCompilation();
using (TempFile fp = new TempFile())
{
Microsoft.CodeAnalysis.Emit.EmitResult emitResult = compilation.Emit(fp);
Assert.True(emitResult.Success);
}
LanguageBackend backend = new Glsl450Backend(compilation);
ShaderGenerator sg = new ShaderGenerator(
compilation,
vsName,
fsName,
backend);
ShaderGenerationResult result = sg.GenerateShaders();
IReadOnlyList <GeneratedShaderSet> sets = result.GetOutput(backend);
Assert.Equal(1, sets.Count);
GeneratedShaderSet set = sets[0];
ShaderModel shaderModel = set.Model;
if (vsName != null)
{
ShaderFunction vsFunction = shaderModel.GetFunction(vsName);
string vsCode = set.VertexShaderCode;
File.WriteAllText(@"C:\Users\raver\Documents\forward-vertex.glsl", vsCode);
GlsLangValidatorTool.AssertCompilesCode(vsCode, "vert", true);
}
if (fsName != null)
{
ShaderFunction fsFunction = shaderModel.GetFunction(fsName);
string fsCode = set.FragmentShaderCode;
File.WriteAllText(@"C:\Users\raver\Documents\forward-frag.glsl", fsCode);
GlsLangValidatorTool.AssertCompilesCode(fsCode, "frag", true);
}
}
public static int Main(string[] args)
{
string referenceItemsResponsePath = null;
string compileItemsResponsePath = null;
string outputPath = null;
string genListFilePath = null;
bool listAllFiles = false;
string processorPath = null;
string processorArgs = null;
for (int i = 0; i < args.Length; i++)
{
args[i] = args[i].Replace("\\\\", "\\");
}
ArgumentSyntax.Parse(args, syntax =>
{
syntax.DefineOption("ref", ref referenceItemsResponsePath, true, "The semicolon-separated list of references to compile against.");
syntax.DefineOption("src", ref compileItemsResponsePath, true, "The semicolon-separated list of source files to compile.");
syntax.DefineOption("out", ref outputPath, true, "The output path for the generated shaders.");
syntax.DefineOption("genlist", ref genListFilePath, true, "The output file to store the list of generated files.");
syntax.DefineOption("listall", ref listAllFiles, false, "Forces all generated files to be listed in the list file. By default, only bytecode files will be listed and not the original shader code.");
syntax.DefineOption("processor", ref processorPath, false, "The path of an assembly containing IShaderSetProcessor types to be used to post-process GeneratedShaderSet objects.");
syntax.DefineOption("processorargs", ref processorArgs, false, "Custom information passed to IShaderSetProcessor.");
});
referenceItemsResponsePath = NormalizePath(referenceItemsResponsePath);
compileItemsResponsePath = NormalizePath(compileItemsResponsePath);
outputPath = NormalizePath(outputPath);
genListFilePath = NormalizePath(genListFilePath);
processorPath = NormalizePath(processorPath);
if (!File.Exists(referenceItemsResponsePath))
{
Console.Error.WriteLine("Reference items response file does not exist: " + referenceItemsResponsePath);
return(-1);
}
if (!File.Exists(compileItemsResponsePath))
{
Console.Error.WriteLine("Compile items response file does not exist: " + compileItemsResponsePath);
return(-1);
}
if (!Directory.Exists(outputPath))
{
try
{
Directory.CreateDirectory(outputPath);
}
catch
{
Console.Error.WriteLine($"Unable to create the output directory \"{outputPath}\".");
return(-1);
}
}
string[] referenceItems = File.ReadAllLines(referenceItemsResponsePath);
string[] compileItems = File.ReadAllLines(compileItemsResponsePath);
List <MetadataReference> references = new List <MetadataReference>();
foreach (string referencePath in referenceItems)
{
if (!File.Exists(referencePath))
{
Console.Error.WriteLine("Error: reference does not exist: " + referencePath);
return(1);
}
using (FileStream fs = File.OpenRead(referencePath))
{
references.Add(MetadataReference.CreateFromStream(fs, filePath: referencePath));
}
}
List <SyntaxTree> syntaxTrees = new List <SyntaxTree>();
foreach (string sourcePath in compileItems)
{
string fullSourcePath = Path.Combine(Environment.CurrentDirectory, sourcePath);
if (!File.Exists(fullSourcePath))
{
Console.Error.WriteLine("Error: source file does not exist: " + fullSourcePath);
return(1);
}
using (FileStream fs = File.OpenRead(fullSourcePath))
{
SourceText text = SourceText.From(fs);
syntaxTrees.Add(CSharpSyntaxTree.ParseText(text, path: fullSourcePath));
}
}
Compilation compilation = CSharpCompilation.Create(
"ShaderGen.App.GenerateShaders",
syntaxTrees,
references,
options: new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary));
HlslBackend hlsl = new HlslBackend(compilation);
Glsl330Backend glsl330 = new Glsl330Backend(compilation);
GlslEs300Backend glsles300 = new GlslEs300Backend(compilation);
Glsl450Backend glsl450 = new Glsl450Backend(compilation);
MetalBackend metal = new MetalBackend(compilation);
LanguageBackend[] languages = new LanguageBackend[]
{
hlsl,
glsl330,
glsles300,
glsl450,
metal,
};
List <IShaderSetProcessor> processors = new List <IShaderSetProcessor>();
if (processorPath != null)
{
try
{
Assembly assm = Assembly.LoadFrom(processorPath);
IEnumerable <Type> processorTypes = assm.GetTypes().Where(
t => t.GetInterface(nameof(ShaderGen) + "." + nameof(IShaderSetProcessor)) != null);
foreach (Type type in processorTypes)
{
IShaderSetProcessor processor = (IShaderSetProcessor)Activator.CreateInstance(type);
processor.UserArgs = processorArgs;
processors.Add(processor);
}
}
catch (ReflectionTypeLoadException rtle)
{
string msg = string.Join(Environment.NewLine, rtle.LoaderExceptions.Select(e => e.ToString()));
Console.WriteLine("FAIL: " + msg);
throw new Exception(msg);
}
}
ShaderGenerator sg = new ShaderGenerator(compilation, languages, processors.ToArray());
ShaderGenerationResult shaderGenResult;
try
{
shaderGenResult = sg.GenerateShaders();
}
catch (Exception e) when(!Debugger.IsAttached)
{
StringBuilder sb = new StringBuilder();
sb.AppendLine("An error was encountered while generating shader code:");
sb.AppendLine(e.ToString());
Console.Error.WriteLine(sb.ToString());
return(-1);
}
Encoding outputEncoding = new UTF8Encoding(false);
List <string> generatedFilePaths = new List <string>();
foreach (LanguageBackend lang in languages)
{
string extension = BackendExtension(lang);
IReadOnlyList <GeneratedShaderSet> sets = shaderGenResult.GetOutput(lang);
foreach (GeneratedShaderSet set in sets)
{
string name = set.Name;
if (set.VertexShaderCode != null)
{
string vsOutName = name + "-vertex." + extension;
string vsOutPath = Path.Combine(outputPath, vsOutName);
File.WriteAllText(vsOutPath, set.VertexShaderCode, outputEncoding);
bool succeeded = CompileCode(
lang,
vsOutPath,
set.VertexFunction.Name,
ShaderFunctionType.VertexEntryPoint,
out string[] genPaths);
if (succeeded)
{
generatedFilePaths.AddRange(genPaths);
}
if (!succeeded || listAllFiles)
{
generatedFilePaths.Add(vsOutPath);
}
}
if (set.FragmentShaderCode != null)
{
string fsOutName = name + "-fragment." + extension;
string fsOutPath = Path.Combine(outputPath, fsOutName);
File.WriteAllText(fsOutPath, set.FragmentShaderCode, outputEncoding);
bool succeeded = CompileCode(
lang,
fsOutPath,
set.FragmentFunction.Name,
ShaderFunctionType.FragmentEntryPoint,
out string[] genPaths);
if (succeeded)
{
generatedFilePaths.AddRange(genPaths);
}
if (!succeeded || listAllFiles)
{
generatedFilePaths.Add(fsOutPath);
}
}
if (set.ComputeShaderCode != null)
{
string csOutName = name + "-compute." + extension;
string csOutPath = Path.Combine(outputPath, csOutName);
File.WriteAllText(csOutPath, set.ComputeShaderCode, outputEncoding);
bool succeeded = CompileCode(
lang,
csOutPath,
set.ComputeFunction.Name,
ShaderFunctionType.ComputeEntryPoint,
out string[] genPaths);
if (succeeded)
{
generatedFilePaths.AddRange(genPaths);
}
if (!succeeded || listAllFiles)
{
generatedFilePaths.Add(csOutPath);
}
}
}
}
File.WriteAllLines(genListFilePath, generatedFilePaths);
return(0);
}
/// <summary>
/// Compilation function (must be overrided for a specific graphic library implementation).
/// </summary>
/// <param name="shader">Shader to compile.</param>
/// <returns>Shader instance with compiled binary.</returns>
protected override ShaderInstance CompileShader(ShaderInstance shader)
{
var outShader = new VKShaderInstance(base.CompileShader(shader));
// - Gets all shader referenced assemblies
var assemblies = AppDomain.CurrentDomain.GetAssemblies();
var mathAsm = typeof(System.Numerics.Vector4).Assembly.GetReferencedAssemblies();
assemblies = assemblies.Concat(mathAsm.Select(x => Assembly.Load(x.FullName))).ToArray();
var assemblyMeta = assemblies.Select(x => MetadataReference.CreateFromFile(x.Location));
// - Compile the shader code obtaining an IL version
CSharpCompilation compilation = CSharpCompilation.Create
(
"pEngine",
syntaxTrees: new[] { CSharpSyntaxTree.ParseText(outShader.CSourceCode) },
references: assemblyMeta,
new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary)
);
// - Get the assembly class path
string fullName = outShader.Type.FullName;
// - We want to compile targetting GLSL450 compatible for Vulkan
var backend = new Glsl450Backend(compilation);
// - Prepare a GLSL compiler providing the C# IL binary
var generator = new ShaderGenerator
(
compilation, backend,
outShader.HasVertexShader ? $"{fullName}.{shader.VertexFunctionName}" : null,
outShader.HasFragmentShader ? $"{fullName}.{shader.FragmentFunctionName}" : null,
outShader.HasComputeShader ? $"{fullName}.{shader.ComputeFunctionName}" : null
);
// - Compile to the GLSL code
var shaders = generator.GenerateShaders().GetOutput(backend);
// - Stores all shader sources
outShader.VertexSource = outShader.HasVertexShader ? shaders.Where(x => x.VertexShaderCode != null).First().VertexShaderCode : "";
outShader.FragmentSource = outShader.HasFragmentShader ? shaders.Where(x => x.FragmentShaderCode != null).First().FragmentShaderCode : "";
outShader.ComputeSource = outShader.HasComputeShader ? shaders.Where(x => x.ComputeShaderCode != null).First().ComputeShaderCode : "";
// - This class will compile the GLSL code to the SPIR-V binary
ShaderCompiler compiler = new ShaderCompiler();
if (outShader.HasVertexShader)
{
var res = compiler.CompileToSpirV(outShader.VertexSource, ShaderCompiler.ShaderKind.VertexShader, "main");
if (res.ErrorCount > 0)
{
throw new InvalidProgramException(res.Errors);
}
outShader.VertexBinary = res.Binary;
}
if (outShader.HasFragmentShader)
{
var res = compiler.CompileToSpirV(outShader.FragmentSource, ShaderCompiler.ShaderKind.FragmentShader, "main");
if (res.ErrorCount > 0)
{
throw new InvalidProgramException(res.Errors);
}
outShader.FragmentBinary = res.Binary;
}
if (outShader.HasComputeShader)
{
var res = compiler.CompileToSpirV(outShader.ComputeSource, ShaderCompiler.ShaderKind.ComputeShader, "main");
if (res.ErrorCount > 0)
{
throw new InvalidProgramException(res.Errors);
}
outShader.ComputeBinary = res.Binary;
}
return(outShader);
}
