Resource binding

When drawing vertices using an effect, the shaders will expect certain resources to be available. These include:

• Texture and buffers
• Samplers
• Constant buffers

Automatic resource binding

For convenience the engine provides the @'SiliconStudio.Xenko.Rendering.EffectInstance' class to handle the details of enumerating these resources from a loaded effect as well as binding them.

It exposes the @'SiliconStudio.Xenko.Graphics.RootSignature', which has to be set as pipeline state, and allows to fill constant buffers and bind resources based on a @'SiliconStudio.Xenko.Rendering.ParameterCollection'.

Code: Using an EffectInstance

// Create a EffectInstance and use it to set up the pipeline
var effectInstance = new EffectInstance(EffectSystem.LoadEffect("MyEffect").WaitForResult());
pipelineStateDescription.EffectBytecode = effectInstance.Effect.Bytecode;
pipelineStateDescription.RootSignature = effectInstance.RootSignature;

// Update constant buffers and bind resources
effectInstance.Apply(context.GraphicsContext);

Manual resource binding

When more optimized code is required, e.g. in many parts of Xenko's rendering pipeline, constant buffers updates and resource binding can be done manually.