maxwell_3d: no method dispatch for non-executable register writes; notes 133-137

ProcessMethodCall and the draw manager behind it act only on executable methods, so
CallMethod stops at the dirty flags for the rest (macro replays write ~2.4 million of
those a second). No change beyond run-to-run noise in two profiled runs; it only removes
work. Notes: row 133 corrected (those courses are bound by the GPU thread, not the host
GPU: 20-40% busy), rows 135-137 (same-value writes, native compute registers, 2D blits).

1 files changed, 5 insertions, 1 deletions

diff --git a/src/video_core/engines/maxwell_3d.cpp b/src/video_core/engines/maxwell_3d.cpp
index f958b025bc..997ef474f5 100644
--- a/src/video_core/engines/maxwell_3d.cpp
+++ b/src/video_core/engines/maxwell_3d.cpp
@@ -466,7 +466,11 @@ void Maxwell3D::CallMethod(Core::System& system, u32 method, u32 method_argument
     // million 3D register writes a second, ~60% of them same-value, most from macro replays.
     // Methods with side effects (execution_mask: draws, clears, constant buffer data and
     // binds, semaphores, ...) always run. EDEN_NX2_SKIP_SAME=0 turns it off.
-    if (SkipSameValueWrites() && !execution_mask[method] && regs.reg_array[method] == argument) {
+    if (!execution_mask[method]) {
+        // ProcessMethodCall (and the draw manager behind it) acts only on executable methods.
+        if (!SkipSameValueWrites() || regs.reg_array[method] != argument) {
+            ProcessDirtyRegisters(method, argument);
+        }
         return;
     }
     ProcessDirtyRegisters(method, argument);