Allow single-pass filters (which use asNewEffect()) to participate in the image filter DAG. This w…

src/effects/SkImageFilterUtils.cpp

-/*
- * Copyright 2013 The Android Open Source Project
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "SkMatrix.h"
-
-#if SK_SUPPORT_GPU
-#include "GrTexture.h"
-#include "SkImageFilterUtils.h"
-#include "SkBitmap.h"
-#include "SkGrPixelRef.h"
-#include "SkGr.h"
-
-bool SkImageFilterUtils::WrapTexture(GrTexture* texture, int width, int height, SkBitmap* result) {
-    SkASSERT(texture->config() == kSkia8888_GrPixelConfig);
-    result->setConfig(SkBitmap::kARGB_8888_Config, width, height);
-    result->setPixelRef(SkNEW_ARGS(SkGrPixelRef, (texture)))->unref();
-    return true;
-}
-
-bool SkImageFilterUtils::GetInputResultGPU(SkImageFilter* filter, SkImageFilter::Proxy* proxy, const SkBitmap& src, SkBitmap* result) {
-    if (!filter) {
-        *result = src;
-        return true;
-    } else if (filter->canFilterImageGPU()) {
-        return filter->filterImageGPU(proxy, src, result);
-    } else {
-        SkIPoint offset;
-        if (filter->filterImage(proxy, src, SkMatrix(), result, &offset)) {
-            if (!result->getTexture()) {
-                GrContext* context = ((GrTexture *) src.getTexture())->getContext();
-                GrTexture* resultTex = GrLockAndRefCachedBitmapTexture(context,
-                    *result, NULL);
-                result->setPixelRef(new SkGrPixelRef(resultTex))->unref();
-                GrUnlockAndUnrefCachedBitmapTexture(resultTex);
-            }
-            return true;
-        } else {
-            return false;
-        }
-    }
-}
-#endif