From: Tim Rowley <timothy.o.rowley@intel.com>
Date: Mon, 2 May 2016 20:09:39 +0000 (-0600)
Subject: swr: [rasterizer core] Faster modulo operator in ProcessVerts
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ff8c0c9a35458532519721ced82bc8d4b1ed8cac;p=mesa.git

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 d3ed279dedf..eb8403c9261 100644
--- 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--;
         }