Insert clip fragment processor outside GrCMM

src/gpu/GrClipMaskManager.h

Index: src/gpu/GrClipMaskManager.h
diff --git a/src/gpu/GrClipMaskManager.h b/src/gpu/GrClipMaskManager.h
index 0c0c10cf30a6eceacf595925e6c4ec6c1d0d4838..aa1a4af16b0db7d77723a6adb6f24da6054ec68b 100644
--- a/src/gpu/GrClipMaskManager.h
+++ b/src/gpu/GrClipMaskManager.h
@@ -23,6 +23,19 @@ class GrPathRenderer;
 class GrPathRendererChain;
 class GrTexture;
 class SkPath;
+

[robertphillips, 2015/10/07 13:06:43]

// informative comment ?

+class GrAppliedClip : public SkNoncopyable {
+public:
+    GrAppliedClip() {}
+    const GrFragmentProcessor* clipCoverageFragmentProcessor() const { return fClipCoverageFP; }
+
+private:
+    SkAutoTUnref<const GrFragmentProcessor> fClipCoverageFP;
+    friend GrClipMaskManager;
+
+    typedef SkNoncopyable INHERITED;
+};
+
 /**
  * The clip mask creator handles the generation of the clip mask. If anti
  * aliasing is requested it will (in the future) generate a single channel
@@ -43,10 +56,10 @@ public:
      * clip. devBounds is optional but can help optimize clipping.
      */
     bool setupClipping(const GrPipelineBuilder&,
-                       GrPipelineBuilder::AutoRestoreFragmentProcessorState*,
                        GrPipelineBuilder::AutoRestoreStencil*,
                        GrScissorState*,
-                       const SkRect* devBounds);
+                       const SkRect* devBounds,
+                       GrAppliedClip*);
 
     bool isClipInStencil() const {
         return kStencil_ClipMaskType == fCurrClipMaskType;
@@ -77,11 +90,9 @@ private:
 
     // Attempts to install a series of coverage effects to implement the clip. Return indicates
     // whether the element list was successfully converted to effects.
-    bool installClipEffects(const GrPipelineBuilder&,
-                            GrPipelineBuilder::AutoRestoreFragmentProcessorState*,
-                            const GrReducedClip::ElementList&,
-                            const SkVector& clipOffset,
-                            const SkRect* devBounds);
+    const GrFragmentProcessor* getAnalyticClipProcessor(const GrReducedClip::ElementList&,
+                                                        const SkVector& clipOffset,
+                                                        const SkRect* devBounds);
 
     // Draws the clip into the stencil buffer
     bool createStencilClipMask(GrRenderTarget*,
@@ -164,6 +175,8 @@ private:
         kAlpha_ClipMaskType,
     } fCurrClipMaskType;
 
+    static const int kMaxAnalyticElements = 4;
+
     GrDrawTarget*   fDrawTarget;    // This is our owning draw target.
     StencilClipMode fClipMode;