public static bool TryParseEffect(string shaderName, Dictionary <string, ShaderViewModel> shaders, out ParsedShader result)
{
result = null;
var resultRef = new ParsedShaderRef();
var success = TryParseEffect(shaderName, shaders, resultRef);
Debug.Assert(resultRef.ParentShaders.Count == 0);
if (success)
{
result = resultRef.ParsedShader;
}
return(success);
}
private static bool TryParseEffect(string shaderName, Dictionary <string, ShaderViewModel> shaders, ParsedShaderRef resultRef)
{
lock (parserCacheLock)
{
if (parserCache.TryGetValue(shaderName, out var localResult))
{
if (resultRef.ParsedShader == null)
{
resultRef.ParsedShader = localResult;
}
else
{
foreach (var parentShader in resultRef.ParentShaders)
{
parentShader.AddBaseShader(localResult);
// also add all base shaders of this base shader
foreach (var baseShader in localResult.BaseShaders)
{
parentShader.AddBaseShader(baseShader);
}
}
}
return(true);
}
try
{
// SDSL
var macros = new[]
{
new ShaderMacro("class", "shader")
};
// get source code
var code = File.ReadAllText(shaders[shaderName].Path);
var inputFileName = shaderName + ".sdsl";
var parsingResult = StrideShaderParser.TryPreProcessAndParse(code, inputFileName, macros);
if (parsingResult.HasErrors || parsingResult.Shader.GetFirstClassDecl() == null)
{
return(false);
}
else //success
{
localResult = new ParsedShader(parsingResult.Shader);
foreach (var parentShader in resultRef.ParentShaders)
{
parentShader.AddBaseShader(localResult);
}
// original shader
if (resultRef.ParsedShader == null)
{
resultRef.ParsedShader = localResult;
}
resultRef.ParentShaders.Push(localResult);
try
{
// base shaders
var baseShaders = localResult.ShaderClass?.BaseClasses ?? Enumerable.Empty <TypeName>();
foreach (var baseClass in baseShaders)
{
var baseShaderName = baseClass.Name.Text;
TryParseEffect(baseShaderName, shaders, resultRef);
}
}
finally
{
resultRef.ParentShaders.Pop();
}
parserCache[shaderName] = localResult;
return(true);
}
}
catch (Exception)
{
return(false);
}
}
}
