Refugee from Dead Machine 4: MDB Monster

src/effects/SkAlphaThresholdFilter.cpp

Index: src/effects/SkAlphaThresholdFilter.cpp
diff --git a/src/effects/SkAlphaThresholdFilter.cpp b/src/effects/SkAlphaThresholdFilter.cpp
index 82f6ea43bb9ae431090f3b81d6b0a92cc6637e38..c838d5af45a37903bfcacd3ebaf32e543e0bc8ad 100644
--- a/src/effects/SkAlphaThresholdFilter.cpp
+++ b/src/effects/SkAlphaThresholdFilter.cpp
@@ -287,7 +287,7 @@ bool SkAlphaThresholdFilterImpl::asFragmentProcessor(GrFragmentProcessor** fp,
             return false;
         }
 
-        GrDrawContext* drawContext = context->drawContext();
+        GrDrawContext* drawContext = context->drawContext(maskTexture->asRenderTarget());
         if (drawContext) {
             GrPaint grPaint;
             grPaint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
@@ -302,6 +302,8 @@ bool SkAlphaThresholdFilterImpl::asFragmentProcessor(GrFragmentProcessor** fp,
             }
         }
 
+        // TODO: whoever uses the resulting 'fp' needs to "use" the correct
+        // drawContext
         *fp = AlphaThresholdEffect::Create(texture,
                                            maskTexture,
                                            fInnerThreshold,