private void RenderFrame()
{
//Set the render target and the depth stencil buffers
//for rendering to the display just set the device default
//BackBuffer and BackDepthBuffer
device.SetRenderTarget(device.BackBuffer, device.BackDepthBuffer);
//Set the ViewPort to used by the device during the viewport tranformation
device.ViewPort = new ViewPort(0, 0, Width, Height);
//Clear the render target and depth stencil buffers
device.Clear(ClearFlags.Target | ClearFlags.ZBuffer, new Color4(0, 0, 0, 0), 1, 0);
//Set the primitive type
device.PrimitiveTopology = IAPrimitive.TriangleList;
//Bind the vertex buffer to slot 0 at offset 0
device.SetVertexBuffer(0, vertexBuffer, 0);
//Set the index buffer
device.SetIndexBuffer(indexBuffer);
//Send the transformation matrices to the vertex shader
input.World = Matrix.RotationY(-(float)Environment.TickCount / 5000.0f);
input.View = view;
input.Projection = projection;
//Send the light info and other values to the pixel shader
input.CameraPosition = cameraPosition;
input.ReflectionRatio = 0.05f;
input.SpecularRatio = 0.15f;
input.SpecularStyleLerp = 0.15f;
input.SpecularPower = 8;
input.DirectionalLight = new DirectionalLight
{
Color = Color3.White,
Direction = new Euler(45, 0, 0).ToDirection()
};
//Bind a texture with a sampler state. As a convetion the SamplerState
//in the shader must have the same name as the texture with 's' as prefix
//for example in the shader the sampler state is declared
//SamplerState sDiffuseTexture;
input.DiffuseTexture = diffuseTexture.ToSampler(diffuseSampler);
device.GetShaderStage <PixelShader>().SetResource(0, diffuseTexture);
device.GetShaderStage <PixelShader>().SetSampler(0, diffuseSampler);
//Bind textures with default sampler state (linear filtering and wrap TextureAddressMode).
//these statements have the same behavior that calling nightTexture.ToSampler()
input.NightTexture = nightTexture;
input.NormalMapTexture = normalMapTexture;
input.ReflectionMask = reflectionMask;
//Set the shader program
device.Program = shaderProgram;
//Draw the geometry using the indices count, the start index an the vertex base offset
device.DrawIndexed((int)indexBuffer.SizeInBytes / indexBuffer.Stride, 0, 0);
//Present the render target buffer to the display.
device.Present();
}