swr: [rasterizer core] Faster modulo operator in ProcessVerts

Avoid % operator, since we know that curVertex is always incrementing.

Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>

diff --git a/src/gallium/drivers/swr/rasterizer/core/pa.h b/src/gallium/drivers/swr/rasterizer/core/pa.h
index d3ed279..eb8403c 100644 (file)
--- a/src/gallium/drivers/swr/rasterizer/core/pa.h
+++ b/src/gallium/drivers/swr/rasterizer/core/pa.h
@@ -508,7 +508,10 @@ struct PA_STATE_CUT : public PA_STATE
                 (this->*pfnPa)(this->curVertex, false);
             }
 
-            this->curVertex = (this->curVertex + 1) % this->numVerts;
+           this->curVertex++;
+           if (this->curVertex >= this->numVerts) {
+               this->curVertex = 0;
+           }
             this->numRemainingVerts--;
         }