commit 985fa79141a82ec5e9bb5b01d9090aef76fac234
author senorblanco@chromium.org <senorblanco@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> Wed Oct 24 15:14:26 2012 +0000
committer senorblanco@chromium.org <senorblanco@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> Wed Oct 24 15:14:26 2012 +0000
tree bffb90e3947b6f94e3358eb6c10e5cd4c69c91ae
parent 055f9086a83423b33d69dda5b2c847b2c7c09718

Protect filter_texture() against render target change.
Fix blend filters when input textures are "sloppy" (approx scratch texture match)
Add a new test case to gm/imagefiltersgraph, and reduce its size.

NOTE:  this will require new baselines for the imagefiltersgraph GM.

BUG=950

Review URL: https://codereview.appspot.com/6769043

git-svn-id: http://skia.googlecode.com/svn/trunk@6073 2bbb7eff-a529-9590-31e7-b0007b416f81

src/gpu/SkGpuDevice.cpp

diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index 52d26bb..fc1f86c 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -1478,6 +1478,9 @@
     GrCustomStage* stage;
 
     if (filter->canFilterImageGPU()) {
+        // Save the render target and set it to NULL, so we don't accidentally draw to it in the
+        // filter.  Also set the clip wide open and the matrix to identity.
+        GrContext::AutoWideOpenIdentityDraw awo(context, NULL);
         texture = filter->onFilterImageGPU(&proxy, texture, rect);
     } else if (filter->asNewCustomStage(&stage, texture)) {
         GrAutoScratchTexture dst(context, desc);