private bool Equals(BuiltPipeline built)
{
return
(built.ShaderSetName == shaderSetName &&
built.Description.Outputs.Equals(OutputDescription) &&
AreVertexLayoutsEqual(built.Description.ShaderSet.VertexLayouts) &&
AreResourceLayoutsEqual(built.ResourceLayoutDescriptions) &&
built.Description.RasterizerState.Equals(rasterizer) &&
built.Description.BlendState.Equals(blendState) &&
built.Description.DepthStencilState.Equals(depthStencil) &&
built.Description.PrimitiveTopology == primitiveTopology);
}
public IBuiltPipeline Build()
{
if (shaderSetName == null)
{
throw new InvalidOperationException("No shader set was specified");
}
if (depthTarget == null && colorTargets.Count == 0)
{
throw new InvalidOperationException("Neither a depth target nor a color target was specified");
}
if (vertexElements.Last().Count() == 0)
{
throw new InvalidOperationException("Last vertex layout has no elements");
}
if (resLayoutElements.Last().Count() == 0)
{
throw new InvalidOperationException("Last resource layout has no elements");
}
lock (Collection)
{
var builtPipeline = Collection.pipelines.FirstOrDefault(Equals);
if (builtPipeline != null)
{
return(builtPipeline);
}
var vertexLayouts = vertexElements
.Select(set => new VertexLayoutDescription(set.ToArray()))
.Select((set, i) => { set.InstanceStepRate = vertexLayoutInstanceStepRates[i]; return(set); })
.ToArray();
var resLayoutDescrs = resLayoutElements
.Select(set => new ResourceLayoutDescription(set.ToArray()))
.ToArray();
var resourceLayouts = resLayoutDescrs
.Select(layoutDescr => Collection.Factory.CreateResourceLayout(layoutDescr))
.ToArray();
var shaders = Collection.LoadShaderSet(shaderSetName);
var pipelineDescr = new GraphicsPipelineDescription(
blendState,
depthStencil,
rasterizer,
primitiveTopology,
new ShaderSetDescription(vertexLayouts, shaders),
resourceLayouts,
OutputDescription);
var pipeline = Collection.Factory.CreateGraphicsPipeline(pipelineDescr);
builtPipeline = new BuiltPipeline(pipeline, pipelineDescr, resLayoutDescrs, shaderSetName);
Collection.pipelines.Add(builtPipeline);
return(builtPipeline);
}
}
