/// <summary>
/// Get the ModuleMixinInfo based on the ShaderSource and the macros. Creates the needed shader if necessary
/// </summary>
/// <param name="shaderSource">the ShaderSource</param>
/// <param name="macros">the macros</param>
/// <param name="macrosString">the name of the macros</param>
/// <returns>ModuleMixinInfo.</returns>
private ModuleMixinInfo GetModuleMixinInfo(ShaderSource shaderSource, Xenko.Core.Shaders.Parser.ShaderMacro[] macros, string macrosString = null)
{
if (macros == null)
{
macros = new Xenko.Core.Shaders.Parser.ShaderMacro[0];
}
if (macrosString == null)
{
macrosString = string.Join(",", macros.OrderBy(x => x.Name));
}
List <ModuleMixinInfo> context;
if (!mapMacrosToMixins.TryGetValue(macrosString, out context))
{
context = new List <ModuleMixinInfo>();
mapMacrosToMixins.Add(macrosString, context);
}
var mixinInfo = context.FirstOrDefault(x => x.AreEqual(shaderSource, macros));
if (mixinInfo == null)
{
mixinInfo = BuildMixinInfo(shaderSource, macros);
if (mixinInfo.Instanciated)
{
MixinInfos.Add(mixinInfo);
mapMacrosToMixins[macrosString].Add(mixinInfo);
mixinInfo.MinimalContext.Add(mixinInfo);
if (!mixinInfo.Log.HasErrors)
{
LoadNecessaryShaders(mixinInfo, macros, macrosString);
}
mixinInfo.MinimalContext = new HashSet <ModuleMixinInfo>(mixinInfo.MinimalContext.Distinct());
}
}
return(mixinInfo);
}
/// <summary>
/// Merge the set of macros in the mixin. The top level macros are always overidden by the child's ones (the one defined in the current ShaderMixinSource).
/// Also update the macros of the mixin.
/// </summary>
/// <param name="mixin">The mixin that will be looked at with the macros.</param>
/// <param name="macros">The external macros.</param>
/// <returns>An array with all the macros</returns>
private Xenko.Core.Shaders.Parser.ShaderMacro[] MergeMacroSets(ShaderMixinSource mixin, Xenko.Core.Shaders.Parser.ShaderMacro[] macros)
{
var newMacros = new List <Xenko.Core.Shaders.Parser.ShaderMacro>();
// get the parent macros
foreach (var macro in macros)
{
newMacros.RemoveAll(x => x.Name == macro.Name);
newMacros.Add(macro);
}
// override with child macros, the mixin's ones
foreach (var macro in mixin.Macros)
{
newMacros.RemoveAll(x => x.Name == macro.Name);
var tempMacro = new Xenko.Core.Shaders.Parser.ShaderMacro(macro.Name, macro.Definition);
newMacros.Add(tempMacro);
}
mixin.Macros = newMacros.Select(x => new ShaderMacro(x.Name, x.Definition)).ToList();
return(newMacros.ToArray());
}
internal ShaderCompilationContext ParseAndAnalyze(ShaderMixinSource shaderMixinSource, Xenko.Shaders.ShaderMacro[] macros, out ShaderMixinParsingResult parsingResult, out HashSet <ModuleMixinInfo> mixinsToAnalyze)
{
// Creates a parsing result
parsingResult = new ShaderMixinParsingResult();
Xenko.Core.Shaders.Parser.ShaderMacro[] macrosParser;
if (macros == null)
{
macrosParser = new Xenko.Core.Shaders.Parser.ShaderMacro[0];
}
else
{
macrosParser = new Xenko.Core.Shaders.Parser.ShaderMacro[macros.Length];
for (var i = 0; i < macros.Length; ++i)
{
macrosParser[i] = new Xenko.Core.Shaders.Parser.ShaderMacro(macros[i].Name, macros[i].Definition);
}
}
//PerformanceLogger.Start(PerformanceStage.Global);
// ----------------------------------------------------------
// Load all shaders
// ----------------------------------------------------------
lock (shaderLibrary)
{
//PerformanceLogger.Start(PerformanceStage.Loading);
mixinsToAnalyze = shaderLibrary.LoadShaderSource(shaderMixinSource, macrosParser);
//PerformanceLogger.Stop(PerformanceStage.Loading);
}
// Extract all ModuleMixinInfo and check for any errors
var allMixinInfos = new HashSet <ModuleMixinInfo>();
foreach (var moduleMixinInfo in mixinsToAnalyze)
{
allMixinInfos.UnionWith(moduleMixinInfo.MinimalContext);
}
foreach (var moduleMixinInfo in allMixinInfos)
{
moduleMixinInfo.Log.CopyTo(parsingResult);
var ast = moduleMixinInfo.MixinAst;
var shaderClassSource = moduleMixinInfo.ShaderSource as ShaderClassSource;
// If we have a ShaderClassSource and it is not an inline one, then we can store the hash sources
if (ast != null && shaderClassSource != null)
{
parsingResult.HashSources[shaderClassSource.ClassName] = moduleMixinInfo.SourceHash;
}
}
// Return directly if there was any errors
if (parsingResult.HasErrors)
{
return(null);
}
// ----------------------------------------------------------
// Perform Type Analysis
// ----------------------------------------------------------
//PerformanceLogger.Start(PerformanceStage.TypeAnalysis);
var context = GetCompilationContext(mixinsToAnalyze, parsingResult);
//PerformanceLogger.Stop(PerformanceStage.TypeAnalysis);
// Return directly if there was any errors
if (parsingResult.HasErrors)
{
return(context);
}
lock (SemanticAnalyzerLock)
{
//PerformanceLogger.Start(PerformanceStage.SemanticAnalysis);
//SemanticPerformance.Start(SemanticStage.Global);
foreach (var mixin in mixinsToAnalyze)
{
context.Analyze(mixin);
}
//SemanticPerformance.Pause(SemanticStage.Global);
//PerformanceLogger.Stop(PerformanceStage.SemanticAnalysis);
}
return(context);
}
