mixin SurfaceData
{
	code
	{
		struct SurfaceData
		{
			float4 albedo;
			float4 worldNormal;
			float depth;
			float roughness;
			float metalness;
			float2 velocity;
			uint mask;
		};
		
		// Encodes velocity into a format suitable for storing in a 16-bit SNORM texture. 
		// Velocity range of [-2, 2] is supported (full NDC).
		float2 encodeVelocity16SNORM(float2 velocity)
		{
			return velocity * 0.5f;
		}
		
		// Decodes velocity from an encoded 16-bit SNORM format. See encodeVelocity16SNORM().
		// Velocity range of [-2, 2] is supported (full NDC).
		float2 decodeVelocity16SNORM(float2 val)
		{
			return val * 2.0f;
		}
	};
};