If the tile has any pixels with anisotropic GGX, we evaluate the entire tile with anisotropic GGX rather than first evaluating pixels with anisotropic GGX and then pixels with isotropic GGX.
Before
; --- Statistics for Deferred.compute on GCN (Pitcairn) ---
; SGPRs: 92 out of 104 used
; VGPRs: 128 out of 256 used
; LDS: 0 out of 32768 bytes used
; 0 bytes scratch space used
; Instructions: 2676 ALU, 183 Control Flow, 50 TFETCH
After
; --- Statistics for Deferred.compute on GCN (Pitcairn) ---
; SGPRs: 94 out of 104 used
; VGPRs: 128 out of 256 used
; LDS: 0 out of 32768 bytes used
; 0 bytes scratch space used
; Instructions: 2583 ALU, 183 Control Flow, 50 TFETCH