Change GrTextContext fallbacks to be a linked list chain.

src/gpu/GrContext.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 "GrContext.h"
 
 #include "effects/GrConfigConversionEffect.h"
 #include "effects/GrDashingEffect.h"
 #include "effects/GrSingleTextureEffect.h"
 
 #include "GrAARectRenderer.h"
+#include "GrBitmapTextContext.h"
 #include "GrBufferAllocPool.h"
 #include "GrGpu.h"
 #include "GrDistanceFieldTextContext.h"
 #include "GrDrawTargetCaps.h"
 #include "GrIndexBuffer.h"
 #include "GrInOrderDrawBuffer.h"
 #include "GrLayerCache.h"
 #include "GrOvalRenderer.h"
 #include "GrPathRenderer.h"
 #include "GrPathUtils.h"
@@ skipping 217 matching lines @@
   }
   if (resourceBytes) {
     *resourceBytes = fResourceCache->getCachedResourceBytes();
   }
 }
 
 GrTextContext* GrContext::createTextContext(GrRenderTarget* renderTarget,
                                             const SkDeviceProperties&
                                             leakyProperties,
                                             bool enableDistanceFieldFonts) {
-    if (fGpu->caps()->pathRenderingSupport()) {
-        if (renderTarget->getStencilBuffer() && renderTarget->isMultisampled()) {
-            return SkNEW_ARGS(GrStencilAndCoverTextContext, (this, leakyProperties));
-        }
+    GrTextContext* mainTextContext;
+    if (fGpu->caps()->pathRenderingSupport() && renderTarget->getStencilBuffer() && 
+                                                renderTarget->isMultisampled()) {
+        mainTextContext = SkNEW_ARGS(GrStencilAndCoverTextContext, (this, leakyProperties));
+    } else {
+        mainTextContext = SkNEW_ARGS(GrDistanceFieldTextContext, (this, leakyProperties,
+            enableDistanceFieldFonts));
     }
-    return SkNEW_ARGS(GrDistanceFieldTextContext, (this, leakyProperties,
-                                                   enableDistanceFieldFonts));
+    mainTextContext->setFallbackTextContext(
+                                        SkNEW_ARGS(GrBitmapTextContext, (this, leakyProperties)));
+
+    return mainTextContext;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 
 GrTexture* GrContext::findAndRefTexture(const GrTextureDesc& desc,
                                         const GrCacheID& cacheID,
                                         const GrTextureParams* params) {
     GrResourceKey resourceKey = GrTexturePriv::ComputeKey(fGpu, params, desc, cacheID);
     GrGpuResource* resource = fResourceCache->find(resourceKey);
     SkSafeRef(resource);
@@ skipping 1592 matching lines @@
     fResourceCache->printStats();
 }
 #endif
 
 #if GR_GPU_STATS
 const GrContext::GPUStats* GrContext::gpuStats() const {
     return fGpu->gpuStats();
 }
 #endif