Smaller fragment from "Reduce dependence on GrSurface's origin field"

TBR=bsalomon@google.com
Change-Id: I996226ffaf84ca357740a6da9bb80a3b8febb379
Reviewed-on: https://skia-review.googlesource.com/25745
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/src/effects/SkMagnifierImageFilter.cpp b/src/effects/SkMagnifierImageFilter.cpp
index 90e0a5c879..b2c6714828 100644
--- a/src/effects/SkMagnifierImageFilter.cpp
+++ b/src/effects/SkMagnifierImageFilter.cpp
@@ -202,14 +202,15 @@ void GrGLMagnifierEffect::onSetData(const GrGLSLProgramDataManager& pdman,
                                     const GrFragmentProcessor& effect) {
     const GrMagnifierEffect& zoom = effect.cast<GrMagnifierEffect>();
 
-    GrTexture* tex = zoom.textureSampler(0).peekTexture();
+    GrSurfaceProxy* proxy = zoom.textureSampler(0).proxy();
+    GrTexture* tex = proxy->priv().peekTexture();
 
     SkScalar invW = 1.0f / tex->width();
     SkScalar invH = 1.0f / tex->height();
 
     {
         SkScalar y = zoom.srcRect().y() * invH;
-        if (tex->origin() != kTopLeft_GrSurfaceOrigin) {
+        if (proxy->origin() != kTopLeft_GrSurfaceOrigin) {
             y = 1.0f - (zoom.srcRect().height() / zoom.bounds().height()) - y;
         }
 
@@ -221,7 +222,7 @@ void GrGLMagnifierEffect::onSetData(const GrGLSLProgramDataManager& pdman,
 
     {
         SkScalar y = zoom.bounds().y() * invH;
-        if (tex->origin() != kTopLeft_GrSurfaceOrigin) {
+        if (proxy->origin() != kTopLeft_GrSurfaceOrigin) {
             y = 1.0f - zoom.bounds().height() * invH;
         }