private void ProcessEffect(DREffectBindingContent binding, ContentProcessorContext context)
{
if (binding.EffectType == DREffectType.CustomEffect)
{
if (!string.IsNullOrEmpty(binding.EffectAsset))
{
// The effect is a prebuilt asset.
return;
}
// Build effect.
if (binding.Effect == null)
{
string message = string.Format(CultureInfo.InvariantCulture, "Material \"{0}\" does not have an effect.", binding.Name);
throw new InvalidContentException(message, binding.Identity);
}
if (String.IsNullOrEmpty(binding.Effect.Filename))
{
string message = string.Format(CultureInfo.InvariantCulture, "Material \"{0}\" does not have a valid effect file. File name is null or empty.", binding.Name);
throw new InvalidContentException(message, binding.Identity);
}
binding.CompiledEffect = OnBuildEffect(binding.Effect, context);
}
}
private void ProcessTextures(DREffectBindingContent material, ContentProcessorContext context, ContentIdentity identity)
{
// We have to call OnBuildTexture (which calls BuildAsset) to replace the
// current texture references (.jpg, .bmp, etc.) with references to the built
// textures (.xnb).
// For stock effects we remove all unnecessary textures.
if (material.EffectType == DREffectType.AlphaTestEffect
|| material.EffectType == DREffectType.BasicEffect
|| material.EffectType == DREffectType.SkinnedEffect)
{
var texture = material.Texture;
material.Textures.Clear();
if (texture != null)
material.Texture = BuildTexture("Texture", texture, context, identity);
return;
}
if (material.EffectType == DREffectType.DualTextureEffect)
{
var texture = material.Texture;
var texture2 = material.Texture2;
material.Textures.Clear();
if (texture != null)
material.Texture = BuildTexture(DualTextureMaterialContent.TextureKey, texture, context, identity);
if (texture2 != null)
material.Texture2 = BuildTexture(DualTextureMaterialContent.Texture2Key, texture2, context, identity);
return;
}
if (material.EffectType == DREffectType.EnvironmentMapEffect)
{
var texture = material.Texture;
var environmentMap = material.EnvironmentMap;
material.Textures.Clear();
if (texture != null)
material.Texture = BuildTexture(EnvironmentMapMaterialContent.TextureKey, texture, context, identity);
if (environmentMap != null)
material.EnvironmentMap = BuildTexture(EnvironmentMapMaterialContent.EnvironmentMapKey, environmentMap, context, identity);
return;
}
// Custom effect: Build all textures stored in the MaterialContent.
foreach (var entry in material.Textures.ToArray())
material.Textures[entry.Key] = BuildTexture(entry.Key, entry.Value, context, identity);
}
private DRMaterialContent ProcessInternal(MaterialContent input, ContentProcessorContext context)
{
// Create effect binding for default render pass.
var binding = new DREffectBindingContent
{
Name = DefaultPass,
Identity = input.Identity
};
// Copy opaque data from material content.
ValidateOpaqueData(input);
foreach (var entry in input.OpaqueData)
binding.OpaqueData.Add(entry.Key, entry.Value);
foreach (var entry in input.Textures)
binding.Textures.Add(entry.Key, entry.Value);
// ----- Effect
if (input is AlphaTestMaterialContent)
{
binding.EffectType = DREffectType.AlphaTestEffect;
}
else if (input is DualTextureMaterialContent)
{
binding.EffectType = DREffectType.DualTextureEffect;
}
else if (input is EnvironmentMapMaterialContent)
{
binding.EffectType = DREffectType.EnvironmentMapEffect;
}
else if (input is SkinnedMaterialContent)
{
binding.EffectType = DREffectType.SkinnedEffect;
}
else
{
var effectMaterial = input as EffectMaterialContent;
if (effectMaterial == null || effectMaterial.Effect == null || string.IsNullOrEmpty(effectMaterial.Effect.Filename))
{
// The material is either
// - a BasicMaterialContent (default)
// - or an EffectMaterialContent without an effect.
// --> Use the DefaultEffect.
binding.EffectType = DefaultEffectType;
if (DefaultEffectType == DREffectType.CustomEffect)
{
if (String.IsNullOrEmpty(DefaultEffectFile))
throw new InvalidContentException("DefaultEffectType is set to CustomEffect, but DefaultEffectFile is null or empty.", input.Identity);
string fileName = ContentHelper.FindFile(DefaultEffectFile, input.Identity);
binding.Effect = new ExternalReference<EffectContent>(fileName);
}
}
}
ProcessEffect(binding, context);
// ----- Textures
foreach (var texture in binding.Textures.Values)
{
// Store texture parameters in opaque data.
texture.OpaqueData.Clear();
texture.OpaqueData.Add("ColorKeyColor", ColorKeyColor);
texture.OpaqueData.Add("ColorKeyEnabled", ColorKeyEnabled);
texture.OpaqueData.Add("GenerateMipmaps", GenerateMipmaps);
texture.OpaqueData.Add("InputGamma", InputTextureGamma);
texture.OpaqueData.Add("OutputGamma", OutputTextureGamma);
texture.OpaqueData.Add("PremultiplyAlpha", PremultiplyTextureAlpha);
texture.OpaqueData.Add("ResizeToPowerOfTwo", ResizeTexturesToPowerOfTwo);
texture.OpaqueData.Add("Format", TextureFormat);
texture.OpaqueData.Add("ReferenceAlpha", ReferenceAlpha);
texture.OpaqueData.Add("ScaleAlphaToCoverage", ScaleTextureAlphaToCoverage);
}
ProcessTextures(binding, context, input.Identity);
// Create DigitalRune material with default render pass.
return new DRMaterialContent
{
Name = input.Name,
Identity = input.Identity,
Passes = new Dictionary<string, DREffectBindingContent>
{
{ DefaultPass, binding }
}
};
}
private DRMaterialContent ProcessInternal(DRMaterialContent material, ContentProcessorContext context)
{
material.Passes = new Dictionary<string, DREffectBindingContent>();
// Parse XML file.
var document = material.Definition;
var identity = material.Identity;
var materialElement = document.Root;
if (materialElement == null || materialElement.Name != "Material")
{
string message = string.Format(CultureInfo.InvariantCulture, "Root element \"<Material>\" is missing in XML.");
throw new InvalidContentException(message, identity);
}
// Override material name, if attribute is set.
material.Name = (string)materialElement.Attribute("Name") ?? material.Name;
// Create effect bindings for all render passes.
foreach (var passElement in materialElement.Elements("Pass"))
{
string pass = passElement.GetMandatoryAttribute("Name", identity);
if (material.Passes.ContainsKey(pass))
{
string message = XmlHelper.GetExceptionMessage(passElement, "Duplicate entry. The pass \"{0}\" was already defined.", pass);
throw new InvalidContentException(message, identity);
}
var binding = new DREffectBindingContent { Name = pass, Identity = identity };
// Skip this pass if the graphics profile does not match the actual target profile.
string profile = (string)passElement.Attribute("Profile") ?? "ANY";
string profileLower = profile.ToUpperInvariant();
if (profileLower == "REACH")
{
if (context.TargetProfile != GraphicsProfile.Reach)
continue;
}
else if (profileLower == "HIDEF")
{
if (context.TargetProfile != GraphicsProfile.HiDef)
continue;
}
else if (profileLower != "ANY")
{
string message = XmlHelper.GetExceptionMessage(passElement, "Unknown profile: \"{0}\". Allowed values are \"Reach\", \"HiDef\" or \"Any\"", profile);
throw new InvalidContentException(message, identity);
}
// ----- Effect
string effectName = passElement.GetMandatoryAttribute("Effect", identity);
switch (effectName)
{
case "AlphaTestEffect":
binding.EffectType = DREffectType.AlphaTestEffect;
break;
case "BasicEffect":
binding.EffectType = DREffectType.BasicEffect;
break;
case "DualTextureEffect":
binding.EffectType = DREffectType.DualTextureEffect;
break;
case "EnvironmentMapEffect":
binding.EffectType = DREffectType.EnvironmentMapEffect;
break;
case "SkinnedEffect":
binding.EffectType = DREffectType.SkinnedEffect;
break;
default:
binding.EffectType = DREffectType.CustomEffect;
if (string.IsNullOrEmpty(Path.GetExtension(effectName)))
{
// The effect is a prebuilt asset. effectName is the name of the asset,
// for example: effectName = "DigitalRune\GBuffer".
binding.EffectAsset = effectName;
}
else
{
// The effect is a local .fx file.
effectName = ContentHelper.FindFile(effectName, identity);
binding.Effect = new ExternalReference<EffectContent>(effectName);
}
break;
}
ProcessEffect(binding, context);
// ----- Parameters
foreach (var parameterElement in passElement.Elements("Parameter"))
{
string name = parameterElement.GetMandatoryAttribute("Name", identity);
if (binding.OpaqueData.ContainsKey(name))
{
string message = XmlHelper.GetExceptionMessage(parameterElement, "Duplicate entry. The parameter \"{0}\" was already defined.", name);
throw new InvalidContentException(message, identity);
}
object value = parameterElement.Attribute("Value").ToParameterValue(null, identity);
if (value != null)
binding.OpaqueData.Add(name, value);
}
// ----- Textures
foreach (var textureElement in passElement.Elements("Texture"))
{
string name = textureElement.GetMandatoryAttribute("Name", identity);
if (binding.Textures.ContainsKey(name))
{
string message = XmlHelper.GetExceptionMessage(textureElement, "Duplicate entry. The texture \"{0}\" was already defined.", name);
throw new InvalidContentException(message, identity);
}
string fileName = textureElement.GetMandatoryAttribute("File", identity);
fileName = ContentHelper.FindFile(fileName, identity);
// Texture processor parameters.
var colorKeyAttribute = textureElement.Attribute("ColorKey");
bool colorKeyEnabled = colorKeyAttribute != null;
Color colorKeyColor = colorKeyAttribute.ToColor(Color.Magenta, identity);
bool generateMipmaps = (bool?)textureElement.Attribute("GenerateMipmaps") ?? true;
float inputGamma = (float?)textureElement.Attribute("InputGamma") ?? 2.2f;
float outputGamma = (float?)textureElement.Attribute("OutputGamma") ?? 2.2f;
bool premultiplyAlpha = (bool?)textureElement.Attribute("PremultiplyAlpha") ?? true;
bool resizeToPowerOfTwo = (bool?)textureElement.Attribute("ResizeToPowerOfTwo") ?? false;
DRTextureFormat textureFormat = textureElement.Attribute("Format").ToTextureFormat(DRTextureFormat.Dxt, identity);
float referenceAlpha = (float?)textureElement.Attribute("ReferenceAlpha") ?? 0.9f;
bool scaleAlphaToCoverage = (bool?)textureElement.Attribute("ScaleAlphaToCoverage") ?? false;
// Store texture parameters in opaque data.
var texture = new ExternalReference<TextureContent>(fileName);
var defaultTextureProcessor = new DRTextureProcessor();
if (colorKeyColor != defaultTextureProcessor.ColorKeyColor)
texture.OpaqueData.Add("ColorKeyColor", colorKeyColor);
if (colorKeyEnabled != defaultTextureProcessor.ColorKeyEnabled)
texture.OpaqueData.Add("ColorKeyEnabled", colorKeyEnabled);
if (generateMipmaps != defaultTextureProcessor.GenerateMipmaps)
texture.OpaqueData.Add("GenerateMipmaps", generateMipmaps);
if (inputGamma != defaultTextureProcessor.InputGamma)
texture.OpaqueData.Add("InputGamma", inputGamma);
if (outputGamma != defaultTextureProcessor.OutputGamma)
texture.OpaqueData.Add("OutputGamma", outputGamma);
if (premultiplyAlpha != defaultTextureProcessor.PremultiplyAlpha)
texture.OpaqueData.Add("PremultiplyAlpha", premultiplyAlpha);
if (resizeToPowerOfTwo != defaultTextureProcessor.ResizeToPowerOfTwo)
texture.OpaqueData.Add("ResizeToPowerOfTwo", resizeToPowerOfTwo);
if (textureFormat != defaultTextureProcessor.Format)
texture.OpaqueData.Add("Format", textureFormat);
if (referenceAlpha != defaultTextureProcessor.ReferenceAlpha)
texture.OpaqueData.Add("ReferenceAlpha", referenceAlpha);
if (scaleAlphaToCoverage != defaultTextureProcessor.ScaleAlphaToCoverage)
texture.OpaqueData.Add("ScaleAlphaToCoverage", scaleAlphaToCoverage);
binding.Textures.Add(name, texture);
}
ProcessTextures(binding, context, identity);
material.Passes.Add(pass, binding);
}
return material;
}