private void CheckPipelines(string shaderName, ShaderData shaderData)
{
var pd = new GraphicsPipelineDescription();
pd.BlendState = activeCamera.BlendState;
pd.RasterizerState = activeCamera.RasterizerState;
pd.DepthStencilState = activeCamera.DepthStencilState;
pd.ResourceBindingModel = ResourceBindingModel.Improved;
pd.PrimitiveTopology = PrimitiveTopology.TriangleStrip; // TODO: Change to TriangleList
pd.ResourceLayouts = shaderData.ResourceLayouts;
pd.ShaderSet = new ShaderSetDescription(vertexLayoutDescriptions, shaderData.Shaders);
pd.Outputs = activeCamera.RenderTarget.OutputDescription;
if (PipelineList.TryAdd(pd.GetHashCode(), _gd.ResourceFactory.CreateGraphicsPipeline(ref pd)))
{
PipelineList[pd.GetHashCode()].Name = shaderName;
}
}
/// <summary>
/// Determine and updates <see cref="CurrentState"/> from <see cref="State"/>.
/// </summary>
public void Update()
{
// Hash current state
var hashedState = State.GetHashCode();
// Find existing PipelineState object
Pipeline pipelineState;
// TODO GRAPHICS REFACTOR We could avoid lock by adding them to a ThreadLocal (or RenderContext) and merge at end of frame
lock (cache)
{
//仅缓存10万个可编程渲染管线
if (cache.Count > 100000)
{
throw new Exception("over flow pipeline");
}
if (!cache.TryGetValue(hashedState, out pipelineState))
{
cache.Add(hashedState, pipelineState = graphicsDevice.ResourceFactory.CreateGraphicsPipeline(State));
}
}
CurrentPipeLine = pipelineState;
}