Fix for cropped matrix convolution for BottomLeft render targets.
R=bsalomon@google.com
Review URL: https://codereview.chromium.org/31083002
git-svn-id: http://skia.googlecode.com/svn/trunk/src@11872 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/effects/SkMatrixConvolutionImageFilter.cpp b/effects/SkMatrixConvolutionImageFilter.cpp
index 04326c6..a9dfecc 100644
--- a/effects/SkMatrixConvolutionImageFilter.cpp
+++ b/effects/SkMatrixConvolutionImageFilter.cpp
@@ -515,11 +515,15 @@
uman.set1f(fGainUni, conv.gain());
uman.set1f(fBiasUni, conv.bias());
const SkIRect& bounds = conv.bounds();
- uman.set4f(fBoundsUni,
- (float) bounds.left() / texture.width(),
- (float) bounds.top() / texture.height(),
- (float) bounds.right() / texture.width(),
- (float) bounds.bottom() / texture.height());
+ float left = (float) bounds.left() / texture.width();
+ float top = (float) bounds.top() / texture.height();
+ float right = (float) bounds.right() / texture.width();
+ float bottom = (float) bounds.bottom() / texture.height();
+ if (texture.origin() == kBottomLeft_GrSurfaceOrigin) {
+ uman.set4f(fBoundsUni, left, 1.0f - bottom, right, 1.0f - top);
+ } else {
+ uman.set4f(fBoundsUni, left, top, right, bottom);
+ }
}
GrMatrixConvolutionEffect::GrMatrixConvolutionEffect(GrTexture* texture,
