reenable complexclip3 for gpu

src/gpu/GrClipMaskManager.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 "GrClipMaskManager.h"
 #include "GrAAConvexPathRenderer.h"
 #include "GrAAHairLinePathRenderer.h"
@@ skipping 432 matching lines @@
                                       GrTextureParams::kNone_FilterMode))->unref();
     // The color passed in here does not matter since the coverageSetOpXP won't read it.
     fClipTarget->drawSimpleRect(drawState, GrColor_WHITE, SkRect::Make(dstBound));
 }
 
 GrTexture* GrClipMaskManager::createTempMask(int width, int height) {
     GrSurfaceDesc desc;
     desc.fFlags = kRenderTarget_GrSurfaceFlag;
     desc.fWidth = width;
     desc.fHeight = height;
-    desc.fConfig = kAlpha_8_GrPixelConfig;
+    if (this->getContext()->isConfigRenderable(kAlpha_8_GrPixelConfig, false)) {
+        desc.fConfig = kAlpha_8_GrPixelConfig;
+    } else {
+        desc.fConfig = kRGBA_8888_GrPixelConfig;
+    }
 
     return this->getContext()->refScratchTexture(desc, GrContext::kApprox_ScratchTexMatch);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // Return the texture currently in the cache if it exists. Otherwise, return NULL
 GrTexture* GrClipMaskManager::getCachedMaskTexture(int32_t elementsGenID,
                                                    const SkIRect& clipSpaceIBounds) {
     bool cached = fAACache.canReuse(elementsGenID, clipSpaceIBounds);
     if (!cached) {
@@ skipping 594 matching lines @@
 }
 
 void GrClipMaskManager::adjustPathStencilParams(const GrStencilBuffer* stencilBuffer,
                                                 GrStencilSettings* settings) {
     // TODO: dynamically attach a stencil buffer
     if (stencilBuffer) {
         int stencilBits = stencilBuffer->bits();
         this->adjustStencilParams(settings, fClipMode, stencilBits);
     }
 }