make the filter mode for GrTextureAccess an enum so we can plumb down

src/effects/SkGpuBlurUtils.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 "SkGpuBlurUtils.h"
 
 #include "SkRect.h"
@@ skipping 114 matching lines @@
             dstRect.offset(-dstRect.fLeft, -dstRect.fTop);
             SkRect domain;
             matrix.mapRect(&domain, rect);
             domain.inset(i < scaleFactorX ? SK_ScalarHalf / srcTexture->width() : 0.0f,
                          i < scaleFactorY ? SK_ScalarHalf / srcTexture->height() : 0.0f);
             SkAutoTUnref<GrEffectRef> effect(GrTextureDomainEffect::Create(
                 srcTexture,
                 matrix,
                 domain,
                 GrTextureDomainEffect::kDecal_WrapMode,
-                true));
+                GrTextureParams::kBilerp_FilterMode));
             paint.addColorEffect(effect);
         } else {
-            GrTextureParams params(SkShader::kClamp_TileMode, true);
+            GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
             paint.addColorTextureEffect(srcTexture, matrix, params);
         }
         scale_rect(&dstRect, i < scaleFactorX ? 0.5f : 1.0f,
                              i < scaleFactorY ? 0.5f : 1.0f);
         context->drawRectToRect(paint, dstRect, srcRect);
         srcRect = dstRect;
         srcTexture = dstTexture;
         SkTSwap(dstTexture, tempTexture);
     }
 
@@ skipping 43 matching lines @@
         context->clear(&clearRect, 0x0);
         clearRect = SkIRect::MakeXYWH(srcIRect.fRight, srcIRect.fTop,
                                       1, srcIRect.height());
         context->clear(&clearRect, 0x0);
         SkMatrix matrix;
         matrix.setIDiv(srcTexture->width(), srcTexture->height());
         context->setRenderTarget(dstTexture->asRenderTarget());
 
         GrPaint paint;
         // FIXME:  this should be mitchell, not bilinear.
-        GrTextureParams params(SkShader::kClamp_TileMode, true);
+        GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
         paint.addColorTextureEffect(srcTexture, matrix, params);
 
         SkRect dstRect(srcRect);
         scale_rect(&dstRect, (float) scaleFactorX, (float) scaleFactorY);
         context->drawRectToRect(paint, dstRect, srcRect);
         srcRect = dstRect;
         srcTexture = dstTexture;
         SkTSwap(dstTexture, tempTexture);
     }
     if (srcTexture == temp1.texture()) {
         return temp1.detach();
     } else if (srcTexture == temp2.texture()) {
         return temp2.detach();
     } else {
         srcTexture->ref();
         return srcTexture;
     }
 }
 #endif
 
 }