Inline fast path for GrPaint::isConstantBlendedColor when no color FPs and src-over blend.

include/gpu/GrPaint.h

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef GrPaint_DEFINED
@@ skipping 148 matching lines @@
 
         return *this;
     }
 
     /**
      * Returns true if the paint's output color will be constant after blending. If the result is
      * true, constantColor will be updated to contain the constant color. Note that we can conflate
      * coverage and color, so the actual values written to pixels with partial coverage may still
      * not seem constant, even if this function returns true.
      */
-    bool isConstantBlendedColor(GrColor* constantColor) const;
+    bool isConstantBlendedColor(GrColor* constantColor) const {
+        GrColor paintColor = this->getColor();
+        if (!fXPFactory && fColorFragmentProcessors.empty()) {
+            if (!GrColorIsOpaque(paintColor)) {
+                return false;
+            }
+            *constantColor = paintColor;
+            return true;
+        }
+        return this->internalIsConstantBlendedColor(paintColor, constantColor);
+    }
 
 private:
+    bool internalIsConstantBlendedColor(GrColor paintColor, GrColor* constantColor) const;
+
     mutable sk_sp<GrXPFactory>                fXPFactory;
     SkSTArray<4, sk_sp<GrFragmentProcessor>>  fColorFragmentProcessors;
     SkSTArray<2, sk_sp<GrFragmentProcessor>>  fCoverageFragmentProcessors;
 
     bool                                      fAntiAlias;
     bool                                      fDisableOutputConversionToSRGB;
     bool                                      fAllowSRGBInputs;
     bool                                      fUsesDistanceVectorField;
 
     GrColor4f                                 fColor;
 };
 
 #endif