Implement text rendering with NVPR

src/gpu/SkGpuDevice.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkGpuDevice.h"
 
 #include "effects/GrBicubicEffect.h"
@@ skipping 170 matching lines @@
 }
 
 void SkGpuDevice::initFromRenderTarget(GrContext* context,
                                        GrRenderTarget* renderTarget,
                                        unsigned flags) {
     fDrawProcs = NULL;
 
     fContext = context;
     fContext->ref();
 
-    fMainTextContext = SkNEW_ARGS(GrDistanceFieldTextContext, (fContext, fLeakyProperties));
-    fFallbackTextContext = SkNEW_ARGS(GrBitmapTextContext, (fContext, fLeakyProperties));
-
     fRenderTarget = NULL;
     fNeedClear = flags & kNeedClear_Flag;
 
     SkASSERT(NULL != renderTarget);
     fRenderTarget = renderTarget;
     fRenderTarget->ref();
 
     // Hold onto to the texture in the pixel ref (if there is one) because the texture holds a ref
     // on the RT but not vice-versa.
     // TODO: Remove this trickery once we figure out how to make SkGrPixelRef do this without
     // busting chrome (for a currently unknown reason).
     GrSurface* surface = fRenderTarget->asTexture();
     if (NULL == surface) {
         surface = fRenderTarget;
     }
 
     SkImageInfo info;
     surface->asImageInfo(&info);
     SkPixelRef* pr = SkNEW_ARGS(SkGrPixelRef, (info, surface, SkToBool(flags & kCached_Flag)));
 
     this->setPixelRef(pr)->unref();
+
+    fMainTextContext = fContext->createTextContext(fRenderTarget, fLeakyProperties);
+    fFallbackTextContext = SkNEW_ARGS(GrBitmapTextContext, (fContext, fLeakyProperties));
 }
 
 SkGpuDevice* SkGpuDevice::Create(GrContext* context, const SkImageInfo& origInfo,
                                  int sampleCount) {
     if (kUnknown_SkColorType == origInfo.colorType() ||
         origInfo.width() < 0 || origInfo.height() < 0) {
         return NULL;
     }
 
     SkImageInfo info = origInfo;
@@ skipping 36 matching lines @@
                          int width,
                          int height,
                          int sampleCount)
     : SkBitmapDevice(make_bitmap(config, width, height))
 {
     fDrawProcs = NULL;
 
     fContext = context;
     fContext->ref();
 
-    fMainTextContext = SkNEW_ARGS(GrDistanceFieldTextContext, (fContext, fLeakyProperties));
+    fMainTextContext = fContext->createTextContext(fLeakyProperties);
     fFallbackTextContext = SkNEW_ARGS(GrBitmapTextContext, (fContext, fLeakyProperties));
 
     fRenderTarget = NULL;
     fNeedClear = false;
 
     if (config != SkBitmap::kRGB_565_Config) {
         config = SkBitmap::kARGB_8888_Config;
     }
 
     GrTextureDesc desc;
@@ skipping 1748 matching lines @@
     if (NULL == data) {
         return false;
     }
 
 #if 0
     const GPUAccelData *gpuData = static_cast<const GPUAccelData*>(data);
 #endif
 
     return false;
 }