Use high precision vertex attributes.

src/gpu/GrOvalRenderer.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrOvalRenderer.h"
 
 #include "GrBatch.h"
@@ skipping 165 matching lines @@
                                                      const GrGLSLCaps&) const override {
         return SkNEW_ARGS(GLProcessor, (*this, bt));
     }
 
 private:
     CircleEdgeEffect(GrColor color, bool stroke, const SkMatrix& localMatrix, bool usesLocalCoords)
         : fColor(color)
         , fLocalMatrix(localMatrix)
         , fUsesLocalCoords(usesLocalCoords) {
         this->initClassID<CircleEdgeEffect>();
-        fInPosition = &this->addVertexAttrib(Attribute("inPosition", kVec2f_GrVertexAttribType));
+        fInPosition = &this->addVertexAttrib(Attribute("inPosition", kVec2f_GrVertexAttribType,
+                                                       kHigh_GrSLPrecision));
         fInCircleEdge = &this->addVertexAttrib(Attribute("inCircleEdge",
                                                            kVec4f_GrVertexAttribType));
         fStroke = stroke;
     }
 
     GrColor fColor;
     SkMatrix fLocalMatrix;
     const Attribute* fInPosition;
     const Attribute* fInCircleEdge;
     bool fStroke;
@@ skipping 352 matching lines @@
         return SkNEW_ARGS(GLProcessor, (*this, bt));
     }
 
 private:
     DIEllipseEdgeEffect(GrColor color, const SkMatrix& viewMatrix, Mode mode,
                         bool usesLocalCoords)
         : fColor(color)
         , fViewMatrix(viewMatrix)
         , fUsesLocalCoords(usesLocalCoords) {
         this->initClassID<DIEllipseEdgeEffect>();
-        fInPosition = &this->addVertexAttrib(Attribute("inPosition", kVec2f_GrVertexAttribType));
+        fInPosition = &this->addVertexAttrib(Attribute("inPosition", kVec2f_GrVertexAttribType,
+                                                       kHigh_GrSLPrecision));
         fInEllipseOffsets0 = &this->addVertexAttrib(Attribute("inEllipseOffsets0",
                                                               kVec2f_GrVertexAttribType));
         fInEllipseOffsets1 = &this->addVertexAttrib(Attribute("inEllipseOffsets1",
                                                               kVec2f_GrVertexAttribType));
         fMode = mode;
     }
 
     const Attribute* fInPosition;
     const Attribute* fInEllipseOffsets0;
     const Attribute* fInEllipseOffsets1;
@@ skipping 1448 matching lines @@
 }
 
 BATCH_TEST_DEFINE(RRectBatch) {
     SkMatrix viewMatrix = GrTest::TestMatrixRectStaysRect(random);
     GrColor color = GrRandomColor(random);
     const SkRRect& rrect = GrTest::TestRRectSimple(random);
     return create_rrect_batch(color, viewMatrix, rrect, GrTest::TestStrokeRec(random));
 }
 
 #endif