Make onPrepareDraws const

src/gpu/batches/GrNonAAStrokeRectBatch.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrNonAAStrokeRectBatch.h"
 
 #include "GrBatchTest.h"
@@ skipping 52 matching lines @@
         overrides->fUsePLSDstRead = false;
     }
 
     void append(GrColor color, const SkMatrix& viewMatrix, const SkRect& rect,
                 SkScalar strokeWidth) {
         Geometry& geometry = fGeoData.push_back();
         geometry.fViewMatrix = viewMatrix;
         geometry.fRect = rect;
         geometry.fStrokeWidth = strokeWidth;
         geometry.fColor = color;
+
+        // Sort the rect for hairlines
+        geometry.fRect.sort();
     }
 
     void appendAndUpdateBounds(GrColor color, const SkMatrix& viewMatrix, const SkRect& rect,
                                SkScalar strokeWidth, bool snapToPixelCenters) {
         this->append(color, viewMatrix, rect, strokeWidth);
 
         SkRect bounds;
         this->setupBounds(&bounds, fGeoData.back(), snapToPixelCenters);
         this->joinBounds(bounds);
     }
@@ skipping 12 matching lines @@
         SkScalar rad = SkScalarHalf(geo.fStrokeWidth);
         bounds->outset(rad, rad);
         geo.fViewMatrix.mapRect(&fBounds);
 
         // If our caller snaps to pixel centers then we have to round out the bounds
         if (snapToPixelCenters) {
             bounds->roundOut();
         }
     }
 
-    void onPrepareDraws(Target* target) override {
+    void onPrepareDraws(Target* target) const override {
         SkAutoTUnref<const GrGeometryProcessor> gp;
         {
             using namespace GrDefaultGeoProcFactory;
             Color color(this->color());
             Coverage coverage(this->coverageIgnored() ? Coverage::kSolid_Type :
                                                         Coverage::kNone_Type);
             LocalCoords localCoords(this->usesLocalCoords() ? LocalCoords::kUsePosition_Type :
                                                               LocalCoords::kUnused_Type);
             gp.reset(GrDefaultGeoProcFactory::Create(color, coverage, localCoords,
                                                      this->viewMatrix()));
         }
 
         target->initDraw(gp, this->pipeline());
 
         size_t vertexStride = gp->getVertexStride();
 
         SkASSERT(vertexStride == sizeof(GrDefaultGeoProcFactory::PositionAttr));
 
-        Geometry& args = fGeoData[0];
+        const Geometry& args = fGeoData[0];
 
         int vertexCount = kVertsPerHairlineRect;
         if (args.fStrokeWidth > 0) {
             vertexCount = kVertsPerStrokeRect;
         }
 
         const GrVertexBuffer* vertexBuffer;
         int firstVertex;
 
         void* verts = target->makeVertexSpace(vertexStride, vertexCount, &vertexBuffer,
                                               &firstVertex);
 
         if (!verts) {
             SkDebugf("Could not allocate vertices\n");
             return;
         }
 
         SkPoint* vertex = reinterpret_cast<SkPoint*>(verts);
 
         GrPrimitiveType primType;
-
         if (args.fStrokeWidth > 0) {;
             primType = kTriangleStrip_GrPrimitiveType;
-            args.fRect.sort();
             init_stroke_rect_strip(vertex, args.fRect, args.fStrokeWidth);
         } else {
             // hairline
             primType = kLineStrip_GrPrimitiveType;
             vertex[0].set(args.fRect.fLeft, args.fRect.fTop);
             vertex[1].set(args.fRect.fRight, args.fRect.fTop);
             vertex[2].set(args.fRect.fRight, args.fRect.fBottom);
             vertex[3].set(args.fRect.fLeft, args.fRect.fBottom);
             vertex[4].set(args.fRect.fLeft, args.fRect.fTop);
         }
@@ skipping 85 matching lines @@
 DRAW_BATCH_TEST_DEFINE(NonAAStrokeRectBatch) {
     SkMatrix viewMatrix = GrTest::TestMatrix(random);
     GrColor color = GrRandomColor(random);
     SkRect rect = GrTest::TestRect(random);
     SkScalar strokeWidth = random->nextBool() ? 0.0f : 1.0f;
 
     return GrNonAAStrokeRectBatch::Create(color, viewMatrix, rect, strokeWidth, random->nextBool());
 }
 
 #endif