// GameMaker reserved and common types/inputs Texture2D gm_BaseTextureObject : register(t0); SamplerState gm_BaseTexture : register(S0); cbuffer gm_PSMaterialConstantBuffer { bool gm_PS_FogEnabled; float4 gm_FogColour; bool gm_AlphaTestEnabled; float4 gm_AlphaRefValue; };