use rasterpipeline for images if matrix is >= scale+translate

Bug: skia:
Change-Id: I36112fe54c6f2d0965d0b88f0291d7ffe0902715
Reviewed-on: https://skia-review.googlesource.com/30480
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
Reviewed-by: Florin Malita <fmalita@chromium.org>

1 files changed, 4 insertions, 3 deletions

diff --git a/src/shaders/SkShaderBase.h b/src/shaders/SkShaderBase.h
index 783fff4db5..99cace22f9 100644
--- a/src/shaders/SkShaderBase.h
+++ b/src/shaders/SkShaderBase.h
@@ -187,9 +187,10 @@ public:
         return this->onMakeColorSpace(xformer);
     }
 
-    bool isRasterPipelineOnly() const {
+    bool isRasterPipelineOnly(const SkMatrix& ctm) const {
         // We always use RP when perspective is present.
-        return fLocalMatrix.hasPerspective() || this->onIsRasterPipelineOnly();
+        return ctm.hasPerspective() || fLocalMatrix.hasPerspective()
+                                    || this->onIsRasterPipelineOnly(ctm);
     }
 
     // If this returns false, then we draw nothing (do not fall back to shader context)
@@ -247,7 +248,7 @@ protected:
     virtual bool onAppendStages(SkRasterPipeline*, SkColorSpace* dstCS, SkArenaAlloc*,
                                 const SkMatrix&, const SkPaint&, const SkMatrix* localM) const;
 
-    virtual bool onIsRasterPipelineOnly() const { return false; }
+    virtual bool onIsRasterPipelineOnly(const SkMatrix& ctm) const { return false; }
 
 private:
     // This is essentially const, but not officially so it can be modified in constructors.