From: Tim Rowley <timothy.o.rowley@intel.com>
Date: Thu, 14 Jul 2016 18:10:39 +0000 (-0600)
Subject: swr: [rasterizer core] fix for possible int32 overflow condition
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5fe361e2c04781f674ee9d9ee4c7b731f6a9e59b;p=mesa.git

swr: [rasterizer core] fix for possible int32 overflow condition

Signed-off-by: Tim Rowley <timothy.o.rowley@intel.com>
---

diff --git a/src/gallium/drivers/swr/rasterizer/core/rasterizer.cpp b/src/gallium/drivers/swr/rasterizer/core/rasterizer.cpp
index 897556a052c..1909ddbcd6a 100644
--- a/src/gallium/drivers/swr/rasterizer/core/rasterizer.cpp
+++ b/src/gallium/drivers/swr/rasterizer/core/rasterizer.cpp
@@ -353,7 +353,7 @@ struct adjustEdgeConservative<RT, std::false_type>
 template <typename RT>
 INLINE void adjustScissorEdge(const double a, const double b, __m256d &vEdge)
 {
-    int32_t aabs = std::abs(static_cast<int32_t>(a)), babs = std::abs(static_cast<int32_t>(b));
+    int64_t aabs = std::abs(static_cast<int64_t>(a)), babs = std::abs(static_cast<int64_t>(b));
 
     int64_t manh = ((aabs * RT::ConservativeEdgeOffsetT::value) + (babs * RT::ConservativeEdgeOffsetT::value)) >>
         ((RT::PrecisionT::BitsT::value + RT::ConservativePrecisionT::BitsT::value) - RT::EdgePrecisionT::BitsT::value);