separate state for msaa renderability

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/GrTextureDomainEffect.h"
@@ skipping 829 matching lines @@
                      const SkStrokeRec& stroke,
                      bool doAA,
                      GrAutoScratchTexture* mask) {
     GrTextureDesc desc;
     desc.fFlags = kRenderTarget_GrTextureFlagBit;
     desc.fWidth = SkScalarCeilToInt(maskRect.width());
     desc.fHeight = SkScalarCeilToInt(maskRect.height());
     // We actually only need A8, but it often isn't supported as a
     // render target so default to RGBA_8888
     desc.fConfig = kRGBA_8888_GrPixelConfig;
-    if (context->isConfigRenderable(kAlpha_8_GrPixelConfig)) {
+    if (context->isConfigRenderable(kAlpha_8_GrPixelConfig, false)) {
         desc.fConfig = kAlpha_8_GrPixelConfig;
     }
 
     mask->set(context, desc);
     if (NULL == mask->texture()) {
         return false;
     }
 
     GrTexture* maskTexture = mask->texture();
     SkRect clipRect = SkRect::MakeWH(maskRect.width(), maskRect.height());
@@ skipping 1017 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;
 }