Refactor drawContext/RenderTarget creation

src/effects/SkLightingImageFilter.cpp

 /*
  * Copyright 2012 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 "SkLightingImageFilter.h"
 #include "SkBitmap.h"
 #include "SkColorPriv.h"
@@ skipping 389 matching lines @@
                                                                     SkSpecialImage* input,
                                                                     const SkIRect& offsetBounds,
                                                                     const SkMatrix& matrix) const {
     SkASSERT(source->isTextureBacked());
 
     GrContext* context = source->getContext();
 
     sk_sp<GrTexture> inputTexture(input->asTextureRef(context));
     SkASSERT(inputTexture);
 
-    GrSurfaceDesc desc;
-    desc.fFlags = kRenderTarget_GrSurfaceFlag,
-    desc.fWidth = offsetBounds.width();
-    desc.fHeight = offsetBounds.height();
-    desc.fConfig = kRGBA_8888_GrPixelConfig;
-
-    sk_sp<GrTexture> dst(context->textureProvider()->createApproxTexture(desc));
-    if (!dst) {
-        return nullptr;
-    }
-
-    sk_sp<GrDrawContext> drawContext(context->drawContext(sk_ref_sp(dst->asRenderTarget())));
+    sk_sp<GrDrawContext> drawContext(context->newDrawContext(GrContext::kLoose_BackingFit,
+                                                             offsetBounds.width(),
+                                                             offsetBounds.height(),
+                                                             kRGBA_8888_GrPixelConfig));
     if (!drawContext) {
         return nullptr;
     }
 
     SkRect dstRect = SkRect::MakeWH(SkIntToScalar(offsetBounds.width()),
                                     SkIntToScalar(offsetBounds.height()));
 
     // setup new clip
     GrClip clip(dstRect);
 
@@ skipping 23 matching lines @@
                    pSrcBounds, offsetBounds);
     this->drawRect(drawContext.get(), inputTexture.get(), matrix, clip, bottomLeft,
                    kBottomLeft_BoundaryMode, pSrcBounds, offsetBounds);
     this->drawRect(drawContext.get(), inputTexture.get(), matrix, clip, bottom,
                    kBottom_BoundaryMode, pSrcBounds, offsetBounds);
     this->drawRect(drawContext.get(), inputTexture.get(), matrix, clip, bottomRight,
                    kBottomRight_BoundaryMode, pSrcBounds, offsetBounds);
 
     return SkSpecialImage::MakeFromGpu(SkIRect::MakeWH(offsetBounds.width(), offsetBounds.height()),
                                        kNeedNewImageUniqueID_SpecialImage,
-                                       std::move(dst));
+                                       drawContext->asTexture());
 }
 #endif
 
 class SkDiffuseLightingImageFilter : public SkLightingImageFilterInternal {
 public:
     static sk_sp<SkImageFilter> Make(sk_sp<SkImageFilterLight> light,
                                      SkScalar surfaceScale,
                                      SkScalar kd,
                                      sk_sp<SkImageFilter>,
                                      const CropRect*);
@@ skipping 1695 matching lines @@
 
     fragBuilder->codeAppendf("%s(%s)", fLightColorFunc.c_str(), surfaceToLight);
 }
 
 #endif
 
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkLightingImageFilter)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDiffuseLightingImageFilter)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSpecularLightingImageFilter)
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END