differentiate mag and min filters

src/gpu/gl/GrGLTexture.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 GrGLTexture_DEFINED
 #define GrGLTexture_DEFINED
@@ skipping 31 matching lines @@
     typedef GrRefCnt INHERITED;
 };
 
 ////////////////////////////////////////////////////////////////////////////////
 
 
 class GrGLTexture : public GrTexture {
 
 public:
     struct TexParams {
-        GrGLenum fFilter;
+        GrGLenum fMinFilter;
+        GrGLenum fMagFilter;
         GrGLenum fWrapS;
         GrGLenum fWrapT;
         GrGLenum fSwizzleRGBA[4];
         void invalidate() { memset(this, 0xff, sizeof(TexParams)); }
     };
 
     struct Desc : public GrTextureDesc {
         GrGLuint        fTextureID;
         bool            fIsWrapped;
     };
@@ skipping 38 matching lines @@
     SkAutoTUnref<GrGLTexID>         fTexIDObj;
 
     void init(GrGpuGL* gpu,
               const Desc& textureDesc,
               const GrGLRenderTarget::Desc* rtDesc);
 
     typedef GrTexture INHERITED;
 };
 
 #endif