/// <summary>
/// Initializes a new instance of the OpenGLVertexShader class.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="source">The shader source.</param>
public OpenGLVertexShader(UltravioletContext uv, ShaderSource source)
: this(uv, new[] { source })
{
}
/// <inheritdoc/>
public override EffectImplementation Process(ContentManager manager, IContentProcessorMetadata metadata, XDocument input)
{
var desc = DeserializeDescription(input);
var parameters = new HashSet <String>(desc.Parameters);
var techniques = new List <OpenGLEffectTechnique>();
if (!desc.Techniques?.Any() ?? false)
{
throw new ContentLoadException(OpenGLStrings.EffectMustHaveTechniques);
}
foreach (var technique in desc.Techniques)
{
var techniqueName = technique.Name;
var techniquePasses = new List <OpenGLEffectPass>();
if (!technique.Passes?.Any() ?? false)
{
throw new ContentLoadException(OpenGLStrings.EffectTechniqueMustHavePasses);
}
foreach (var pass in technique.Passes)
{
var passName = pass.Name;
var vertPath = GetShaderForCurrentPlatform(pass.Stages.VertexShader, pass.Stages.VertexShaderES);
if (String.IsNullOrEmpty(vertPath))
{
throw new ContentLoadException(OpenGLStrings.EffectMustHaveVertexAndFragmentShader);
}
vertPath = ResolveDependencyAssetPath(metadata, vertPath);
metadata.AddAssetDependency(vertPath);
var fragPath = GetShaderForCurrentPlatform(pass.Stages.FragmentShader, pass.Stages.FragmentShaderES);
if (String.IsNullOrEmpty(fragPath))
{
throw new ContentLoadException(OpenGLStrings.EffectMustHaveVertexAndFragmentShader);
}
fragPath = ResolveDependencyAssetPath(metadata, fragPath);
metadata.AddAssetDependency(fragPath);
var vertShaderSource = ShaderSource.ProcessExterns(manager.Load <ShaderSource>(vertPath), Externs);
var vertShader = new OpenGLVertexShader(manager.Ultraviolet, new[] { vertShaderSource });
var fragShaderSource = ShaderSource.ProcessExterns(manager.Load <ShaderSource>(fragPath), Externs);
var fragShader = new OpenGLFragmentShader(manager.Ultraviolet, new[] { fragShaderSource });
foreach (var hint in vertShader.ShaderSourceMetadata.ParameterHints)
{
parameters.Add(hint);
}
foreach (var hint in fragShader.ShaderSourceMetadata.ParameterHints)
{
parameters.Add(hint);
}
var programs = new[] { new OpenGLShaderProgram(manager.Ultraviolet, vertShader, fragShader, false) };
techniquePasses.Add(new OpenGLEffectPass(manager.Ultraviolet, passName, programs));
}
techniques.Add(new OpenGLEffectTechnique(manager.Ultraviolet, techniqueName, techniquePasses));
}
return(new OpenGLEffectImplementation(manager.Ultraviolet, techniques, parameters));
}
/// <inheritdoc/>
public override EffectImplementation ImportPreprocessed(ContentManager manager, IContentProcessorMetadata metadata, BinaryReader reader)
{
var parameters = new HashSet <String>();
var parameterCount = reader.ReadInt32();
for (int i = 0; i < parameterCount; i++)
{
parameters.Add(reader.ReadString());
}
var techniques = new List <OpenGLEffectTechnique>();
var techniqueCount = reader.ReadInt32();
if (techniqueCount == 0)
{
throw new ContentLoadException(OpenGLStrings.EffectMustHaveTechniques);
}
for (int i = 0; i < techniqueCount; i++)
{
var techniqueName = reader.ReadString();
var passes = new List <OpenGLEffectPass>();
var passCount = reader.ReadInt32();
if (passCount == 0)
{
throw new ContentLoadException(OpenGLStrings.EffectTechniqueMustHavePasses);
}
for (int j = 0; j < passCount; j++)
{
var passName = reader.ReadString();
var vertPathGL = reader.ReadString();
var vertPathES = reader.ReadString();
var vertPath = GetShaderForCurrentPlatform(vertPathGL, vertPathES);
if (String.IsNullOrEmpty(vertPath))
{
throw new ContentLoadException(OpenGLStrings.EffectMustHaveVertexAndFragmentShader);
}
vertPath = ResolveDependencyAssetPath(metadata, vertPath);
metadata.AddAssetDependency(vertPath);
var fragPathGL = reader.ReadString();
var fragPathES = reader.ReadString();
var fragPath = GetShaderForCurrentPlatform(fragPathGL, fragPathES);
if (String.IsNullOrEmpty(fragPath))
{
throw new ContentLoadException(OpenGLStrings.EffectMustHaveVertexAndFragmentShader);
}
fragPath = ResolveDependencyAssetPath(metadata, fragPath);
metadata.AddAssetDependency(fragPath);
var vertShaderSource = ShaderSource.ProcessExterns(manager.Load <ShaderSource>(vertPath), Externs);
var vertShader = new OpenGLVertexShader(manager.Ultraviolet, new[] { vertShaderSource });
var fragShaderSource = ShaderSource.ProcessExterns(manager.Load <ShaderSource>(fragPath), Externs);
var fragShader = new OpenGLFragmentShader(manager.Ultraviolet, new[] { fragShaderSource });
var programs = new[] { new OpenGLShaderProgram(manager.Ultraviolet, vertShader, fragShader, false) };
passes.Add(new OpenGLEffectPass(manager.Ultraviolet, passName, programs));
}
techniques.Add(new OpenGLEffectTechnique(manager.Ultraviolet, techniqueName, passes));
}
return(new OpenGLEffectImplementation(manager.Ultraviolet, techniques, parameters));
}
/// <inheritdoc/>
public override OpenGLVertexShader Process(ContentManager manager, IContentProcessorMetadata metadata, String input)
{
var source = ShaderSource.ProcessRawSource(manager, metadata, input);
return(new OpenGLVertexShader(manager.Ultraviolet, new[] { source }));
}