only take the vertical special-case for gradients when dx is exactly 0, as a

zoomed gradient can have a very small dx, but be no where near to vertical.

http://code.google.com/p/skia/issues/detail?id=1101
Review URL: https://codereview.appspot.com/7310059

git-svn-id: http://skia.googlecode.com/svn/trunk@7653 2bbb7eff-a529-9590-31e7-b0007b416f81

diff --git a/src/effects/gradients/SkLinearGradient.cpp b/src/effects/gradients/SkLinearGradient.cpp
index 16a1168..f6bae72 100644 (file)
--- a/src/effects/gradients/SkLinearGradient.cpp
+++ b/src/effects/gradients/SkLinearGradient.cpp
@@ -240,7 +240,7 @@ void SkLinearGradient::shadeSpan(int x, int y, SkPMColor* SK_RESTRICT dstC,
         }
 
         LinearShadeProc shadeProc = shadeSpan_linear_repeat;
-        if (SkFixedNearlyZero(dx)) {
+        if (0 == dx) {
             shadeProc = shadeSpan_linear_vertical_lerp;
         } else if (SkShader::kClamp_TileMode == fTileMode) {
             shadeProc = shadeSpan_linear_clamp;