Add fallback code for TextContexts that don't support all features

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 1753 matching lines @@
                            indexCount);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 void SkGpuDevice::drawText(const SkDraw& draw, const void* text,
                           size_t byteLength, SkScalar x, SkScalar y,
                           const SkPaint& paint) {
     CHECK_SHOULD_DRAW(draw, false);
 
-    if (SkDraw::ShouldDrawTextAsPaths(paint, fContext->getMatrix())) {
-        draw.drawText_asPaths((const char*)text, byteLength, x, y, paint);
-    } else {
+    if (fTextContextManager->canDraw(paint, fContext->getMatrix())) {
         GrPaint grPaint;
         if (!skPaint2GrPaintShader(this, paint, true, &grPaint)) {
             return;
         }
 
         SkDEBUGCODE(this->validate();)
 
         SkAutoTDelete<GrTextContext> ctx(fTextContextManager->create(this->context(),
                                                                      grPaint, paint,
                                                                      this->getDeviceProperties()));
         ctx->drawText((const char *)text, byteLength, x, y);
+    } else if (GrBitmapTextContext::CanDraw(paint, fContext->getMatrix())) {
+        GrPaint grPaint;
+        if (!skPaint2GrPaintShader(this, paint, true, &grPaint)) {
+            return;
+        }
+
+        SkDEBUGCODE(this->validate();)
+
+        GrBitmapTextContext textContext(this->context(), grPaint, paint,
+                                        this->getDeviceProperties());
+        textContext.drawText((const char *)text, byteLength, x, y);
+    } else {
+        // this guy will just call our drawPath()
+        draw.drawText_asPaths((const char*)text, byteLength, x, y, paint);
     }
 }
 
 void SkGpuDevice::drawPosText(const SkDraw& draw, const void* text,
                              size_t byteLength, const SkScalar pos[],
                              SkScalar constY, int scalarsPerPos,
                              const SkPaint& paint) {
     CHECK_SHOULD_DRAW(draw, false);
 
-    if (SkDraw::ShouldDrawTextAsPaths(paint, fContext->getMatrix())) {
-        // this guy will just call our drawPath()
-        draw.drawPosText_asPaths((const char*)text, byteLength, pos, constY,
-                         scalarsPerPos, paint);
-    } else {
+    if (fTextContextManager->canDraw(paint, fContext->getMatrix())) {
         GrPaint grPaint;
         if (!skPaint2GrPaintShader(this, paint, true, &grPaint)) {
             return;
         }
 
         SkDEBUGCODE(this->validate();)
 
         SkAutoTDelete<GrTextContext> ctx(fTextContextManager->create(this->context(),
                                                                      grPaint, paint,
                                                                      this->getDeviceProperties()));
         ctx->drawPosText((const char *)text, byteLength, pos, constY, scalarsPerPos);
+    } else if (GrBitmapTextContext::CanDraw(paint, fContext->getMatrix())) {
+        GrPaint grPaint;
+        if (!skPaint2GrPaintShader(this, paint, true, &grPaint)) {
+            return;
+        }
+        
+        SkDEBUGCODE(this->validate();)
+        
+        GrBitmapTextContext textContext(this->context(), grPaint, paint,
+                                        this->getDeviceProperties());
+        textContext.drawPosText((const char *)text, byteLength, pos, constY, scalarsPerPos);
+    } else {
+        draw.drawPosText_asPaths((const char*)text, byteLength, pos, constY,
+                                 scalarsPerPos, paint);
     }
 }
 
 void SkGpuDevice::drawTextOnPath(const SkDraw& draw, const void* text,
                                 size_t len, const SkPath& path,
                                 const SkMatrix* m, const SkPaint& paint) {
     CHECK_SHOULD_DRAW(draw, false);
 
     SkASSERT(draw.fDevice == this);
     draw.drawTextOnPath((const char*)text, len, path, m, paint);
@@ skipping 68 matching lines @@
                          GrTexture* texture,
                          bool needClear)
     : SkBitmapDevice(make_bitmap(context, texture->asRenderTarget())) {
 
     SkASSERT(texture && texture->asRenderTarget());
     // This constructor is called from onCreateCompatibleDevice. It has locked the RT in the texture
     // cache. We pass true for the third argument so that it will get unlocked.
     this->initFromRenderTarget(context, texture->asRenderTarget(), true);
     fNeedClear = needClear;
 }