Shader recompiler: Add depth mapping

include/PICA/pica_frag_config.hpp

@@ -16,6 +16,7 @@ namespace PICA {
 			// Merge the enable + compare function into 1 field to avoid duplicate shaders
 			// enable == off means a CompareFunction of Always
 			BitField<0, 3, CompareFunction> alphaTestFunction;
+			BitField<4, 1, u32> depthMapEnable;
 		};
 	};
 

include/PICA/pica_frag_uniforms.hpp

@@ -11,6 +11,8 @@ namespace PICA {
 		static constexpr usize tevStageCount = 6;
 
 		s32 alphaReference;
+		float depthScale;
+		float depthOffset;
 
 		alignas(16) vec4 constantColors[tevStageCount];
 		alignas(16) vec4 tevBufferColor;