Move hasStencil to regs.hpp

include/PICA/regs.hpp

@@ -150,6 +150,8 @@ namespace PICA {
 		Depth24Stencil8 = 3,
 	};
 
+	inline constexpr bool hasStencil(DepthFmt format) { return format == PICA::DepthFmt::Depth24Stencil8; }
+
 	// Size occupied by each pixel in bytes
 
 	// All formats are 16BPP except for RGBA8 (32BPP) and BGR8 (24BPP)

include/renderer_gl/surfaces.hpp

@@ -95,10 +95,6 @@ struct DepthBuffer {
         range = Interval<u32>(loc, (u32)endLoc);
     }
 
-    bool hasStencil() {
-        return format == PICA::DepthFmt::Depth24Stencil8;
-    }
-
     void allocate() {
         // Create texture for the FBO, setting up filters and the like
         // Reading back the current texture is slow, but allocate calls should be few and far between.