public override CompiledEffectContent Process(StitchedEffectContent input, ContentProcessorContext context)
{
StitchedEffectSymbol stitchedEffect = StitchedEffectBuilder.BuildStitchedEffect(input, context);
// Find out which shader profile to attempt to compile for first.
ShaderProfile minimumShaderProfile = GetMinimumTargetShaderProfile(stitchedEffect);
foreach (ShaderProfile shaderProfile in Enum.GetValues(typeof(ShaderProfile)))
{
if (shaderProfile < minimumShaderProfile)
{
continue;
}
CompiledEffectContent compiledEffect;
if (AttemptEffectCompilation(context, input, stitchedEffect, shaderProfile, out compiledEffect))
{
return(compiledEffect);
}
}
throw new InvalidContentException(
"Could not find a shader profile compatible with this stitched effect.",
input.Identity);
}
public static void GenerateAllTechniques(EffectCodeGenerator generator, StitchedEffectSymbol stitchedEffect,
bool generateVertexShader)
{
foreach (TechniqueSymbol technique in stitchedEffect.Techniques)
{
GenerateTechnique(generator, technique, generateVertexShader);
}
}
private static ShaderProfile GetMinimumTargetShaderProfile(StitchedEffectSymbol stitchedEffect)
{
foreach (ShaderProfile shaderProfile in Enum.GetValues(typeof(ShaderProfile)))
{
if (stitchedEffect.CanBeCompiledForShaderProfile(shaderProfile))
{
return(shaderProfile);
}
}
throw new InvalidContentException("Could not find shader profile compatible with this stitched effect.");
}
public EffectCodeGenerator(
StitchedEffectSymbol stitchedEffect, ShaderProfile targetShaderProfile,
TextWriter writer)
{
_stitchedEffect = stitchedEffect;
_targetShaderProfile = targetShaderProfile;
_output = new ScriptTextWriter(writer);
_context = new GeneratorContext
{
TargetShaderProfile = _targetShaderProfile
};
}
private static bool AttemptEffectCompilation(
ContentProcessorContext context, StitchedEffectContent input,
StitchedEffectSymbol stitchedEffect, ShaderProfile shaderProfile,
out CompiledEffectContent compiledEffect)
{
// Generate effect code.
StringWriter writer = new StringWriter();
EffectCodeGenerator codeGenerator = new EffectCodeGenerator(stitchedEffect, shaderProfile, writer);
codeGenerator.GenerateCode();
string effectCode = writer.ToString();
// Save effect code so that if there are errors, we'll be able to view the generated .fx file.
string tempEffectFile = GetTempEffectFileName(input);
File.WriteAllText(tempEffectFile, effectCode, Encoding.GetEncoding(1252));
// Process effect code.
EffectProcessor effectProcessor = new EffectProcessor
{
DebugMode = EffectProcessorDebugMode.Auto,
Defines = null
};
EffectContent effectContent = new EffectContent
{
EffectCode = effectCode,
Identity = new ContentIdentity(tempEffectFile),
Name = input.Name
};
try
{
compiledEffect = effectProcessor.Process(effectContent, context);
// This is only needed if the compilation was successful - if it failed,
// a more specific error message (with link to the generated file)
// will be shown to the user.
context.Logger.LogImportantMessage(string.Format("{0} : Stitched effect generated (double-click this message to view).", tempEffectFile));
return(true);
}
catch (InvalidContentException ex)
{
if (ErrorIndicatesNeedForShaderModel3(ex.Message))
{
compiledEffect = null;
return(false);
}
throw;
}
}
public static void GenerateAllHeaderCode(EffectCodeGenerator generator, StitchedEffectSymbol stitchedEffect)
{
List <string> seenFragmentTypes = new List <string>();
foreach (StitchedFragmentSymbol stitchedFragmentNode in stitchedEffect.StitchedFragments)
{
if (seenFragmentTypes.Contains(stitchedFragmentNode.FragmentNode.Name))
{
continue;
}
GenerateHeaderCode(generator, stitchedFragmentNode);
seenFragmentTypes.Add(stitchedFragmentNode.FragmentNode.Name);
}
}
public static List <ExportedValue> GetExportedValues(StitchedEffectSymbol stitchedEffect)
{
ExportDictionary exports = new ExportDictionary();
List <ExportedValue> exportedValues = new List <ExportedValue>();
foreach (StitchedFragmentSymbol stitchedFragment in stitchedEffect.StitchedFragments)
{
foreach (ShaderCodeBlockNode codeBlock in stitchedFragment.FragmentNode.VertexShaders)
{
PreProcessCodeBlock(stitchedFragment.UniqueName, codeBlock, exports, exportedValues, true);
}
foreach (ShaderCodeBlockNode codeBlock in stitchedFragment.FragmentNode.PixelShaders)
{
PreProcessCodeBlock(stitchedFragment.UniqueName, codeBlock, exports, exportedValues, true);
}
}
return(exportedValues);
}
public static void GenerateAllParameters(EffectCodeGenerator generator, StitchedEffectSymbol stitchedEffect)
{
generator.ForEachFragment(WriteParams);
}
public static void WriteAllVertexInputStructures(EffectCodeGenerator generator, StitchedEffectSymbol stitchedEffect)
{
generator.ForEachPass(WriteVertexInputStructures);
}
public static void WriteAllPixelOutputStructs(EffectCodeGenerator generator, StitchedEffectSymbol stitchedEffect)
{
generator.ForEachPass(WritePixelOutputStructs);
}
public static void WriteAllPixelShaders(EffectCodeGenerator generator, StitchedEffectSymbol stitchedEffect)
{
generator.ForEachPass(WritePixelShaders);
}