/// <summary>
/// Bind the material, this will call BeginInstance on the backend
/// It is up to the caller to call EndInstance
/// </summary>
/// <param name="backend"></param>
/// <param name="world"></param>
/// <param name="worldView"></param>
/// <param name="itWorldView"></param>
/// <param name="modelViewProjection"></param>
public void BindPerObject(Backend backend, ref Matrix4 world, ref Matrix4 worldView, ref Matrix4 itWorld, ref Matrix4 modelViewProjection, SkeletalAnimation.SkeletonInstance skeleton)
{
backend.BindShaderVariable(Handles.ModelViewProjection, ref modelViewProjection);
backend.BindShaderVariable(Handles.World, ref world);
backend.BindShaderVariable(Handles.WorldView, ref worldView);
backend.BindShaderVariable(Handles.ItWorld, ref itWorld);
if (skeleton != null)
{
backend.BindShaderVariable(Handles.Bones, ref skeleton.FinalBoneTransforms);
}
}
public void BeginInstance(Backend backend, Camera camera, int renderStateId)
{
if (!Initialized)
{
Initialize(backend);
}
backend.BeginInstance(Shader.Handle, TextureHandles, samplers: Samplers, renderStateId: renderStateId);
for (var i = 0; i < SamplerToTexture.Length; i++)
{
backend.BindShaderVariable(SamplerToTexture[i], i);
}
backend.BindShaderVariable(Handles.Time, backend.ElapsedTime);
backend.BindShaderVariable(Handles.CameraPosition, ref camera.Position);
}