Use texture strip atlas for color table filter

src/gpu/effects/GrTextureStripAtlas.cpp

 
 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrTextureStripAtlas.h"
 #include "SkPixelRef.h"
@@ skipping 62 matching lines @@
     : fCacheKey(sk_atomic_inc(&gCacheCount))
     , fLockedRows(0)
     , fDesc(desc)
     , fNumRows(desc.fHeight / desc.fRowHeight)
     , fTexture(NULL)
     , fRows(SkNEW_ARRAY(AtlasRow, fNumRows))
     , fLRUFront(NULL)
     , fLRUBack(NULL) {
     SkASSERT(fNumRows * fDesc.fRowHeight == fDesc.fHeight);
     this->initLRU();
+    fNormalizedYHeight = SK_Scalar1 / fDesc.fHeight;
     VALIDATE;
 }
 
 GrTextureStripAtlas::~GrTextureStripAtlas() {
     SkDELETE_ARRAY(fRows);
 }
 
 int GrTextureStripAtlas::lockRow(const SkBitmap& data) {
     VALIDATE;
     if (0 == fLockedRows) {
@@ skipping 244 matching lines @@
 
     // If we have locked rows, we should have a locked texture, otherwise
     // it should be unlocked
     if (fLockedRows == 0) {
         SkASSERT(NULL == fTexture);
     } else {
         SkASSERT(fTexture);
     }
 }
 #endif