Split drawing functionality out of GrContext and into new GrDrawContext

src/effects/SkMorphologyImageFilter.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 "SkMorphologyImageFilter.h"
 #include "SkBitmap.h"
 #include "SkColorPriv.h"
 #include "SkReadBuffer.h"
 #include "SkWriteBuffer.h"
 #include "SkRect.h"
 #include "SkMorphology_opts.h"
 #if SK_SUPPORT_GPU
 #include "GrContext.h"
+#include "GrDrawContext.h"
 #include "GrInvariantOutput.h"
 #include "GrTexture.h"
 #include "effects/Gr1DKernelEffect.h"
 #include "gl/GrGLProcessor.h"
 #include "gl/builders/GrGLProgramBuilder.h"
 #endif
 
 SkMorphologyImageFilter::SkMorphologyImageFilter(int radiusX,
                                                  int radiusY,
                                                  SkImageFilter* input,
@@ skipping 526 matching lines @@
     int radius = random->nextRangeU(1, kMaxRadius);
     MorphologyType type = random->nextBool() ? GrMorphologyEffect::kErode_MorphologyType :
                                                GrMorphologyEffect::kDilate_MorphologyType;
 
     return GrMorphologyEffect::Create(textures[texIdx], dir, radius, type);
 }
 
 namespace {
 
 
-void apply_morphology_rect(GrContext* context,
+void apply_morphology_rect(GrDrawContext* drawContext,
                            GrRenderTarget* rt,
                            const GrClip& clip,
                            GrTexture* texture,
                            const SkIRect& srcRect,
                            const SkIRect& dstRect,
                            int radius,
                            GrMorphologyEffect::MorphologyType morphType,
                            float bounds[2],
                            Gr1DKernelEffect::Direction direction) {
     GrPaint paint;
     paint.addColorProcessor(GrMorphologyEffect::Create(texture,
                                                        direction,
                                                        radius,
                                                        morphType,
                                                        bounds))->unref();
-    context->drawNonAARectToRect(rt, clip, paint, SkMatrix::I(), SkRect::Make(dstRect),
-                                 SkRect::Make(srcRect));
+    drawContext->drawNonAARectToRect(rt, clip, paint, SkMatrix::I(), SkRect::Make(dstRect),
+                                     SkRect::Make(srcRect));
 }
 
-void apply_morphology_rect_no_bounds(GrContext* context,
+void apply_morphology_rect_no_bounds(GrDrawContext* drawContext,
                                      GrRenderTarget* rt,
                                      const GrClip& clip,
                                      GrTexture* texture,
                                      const SkIRect& srcRect,
                                      const SkIRect& dstRect,
                                      int radius,
                                      GrMorphologyEffect::MorphologyType morphType,
                                      Gr1DKernelEffect::Direction direction) {
     GrPaint paint;
     paint.addColorProcessor(GrMorphologyEffect::Create(texture,
                                                        direction,
                                                        radius,
                                                        morphType))->unref();
-    context->drawNonAARectToRect(rt, clip, paint, SkMatrix::I(), SkRect::Make(dstRect),
-                                 SkRect::Make(srcRect));
+    drawContext->drawNonAARectToRect(rt, clip, paint, SkMatrix::I(), SkRect::Make(dstRect),
+                                     SkRect::Make(srcRect));
 }
 
-void apply_morphology_pass(GrContext* context,
+void apply_morphology_pass(GrDrawContext* drawContext,
                            GrRenderTarget* rt,
                            const GrClip& clip,
                            GrTexture* texture,
                            const SkIRect& srcRect,
                            const SkIRect& dstRect,
                            int radius,
                            GrMorphologyEffect::MorphologyType morphType,
                            Gr1DKernelEffect::Direction direction) {
     float bounds[2] = { 0.0f, 1.0f };
     SkIRect lowerSrcRect = srcRect, lowerDstRect = dstRect;
@@ skipping 13 matching lines @@
         bounds[1] = (SkIntToScalar(srcRect.bottom()) - 0.5f) / texture->height();
         lowerSrcRect.fBottom = srcRect.top() + radius;
         lowerDstRect.fBottom = dstRect.top() + radius;
         upperSrcRect.fTop = srcRect.bottom() - radius;
         upperDstRect.fTop = dstRect.bottom() - radius;
         middleSrcRect.inset(0, radius);
         middleDstRect.inset(0, radius);
     }
     if (middleSrcRect.fLeft - middleSrcRect.fRight >= 0) {
         // radius covers srcRect; use bounds over entire draw
-        apply_morphology_rect(context, rt, clip, texture, srcRect, dstRect, radius,
+        apply_morphology_rect(drawContext, rt, clip, texture, srcRect, dstRect, radius,
                               morphType, bounds, direction);
     } else {
         // Draw upper and lower margins with bounds; middle without.
-        apply_morphology_rect(context, rt, clip, texture, lowerSrcRect, lowerDstRect, radius,
+        apply_morphology_rect(drawContext, rt, clip, texture, lowerSrcRect, lowerDstRect, radius,
                               morphType, bounds, direction);
-        apply_morphology_rect(context, rt, clip, texture, upperSrcRect, upperDstRect, radius,
+        apply_morphology_rect(drawContext, rt, clip, texture, upperSrcRect, upperDstRect, radius,
                               morphType, bounds, direction);
-        apply_morphology_rect_no_bounds(context, rt, clip, texture, middleSrcRect, middleDstRect,
+        apply_morphology_rect_no_bounds(drawContext, rt, clip, texture, middleSrcRect, middleDstRect,
                                         radius, morphType, direction);
     }
 }
 
 bool apply_morphology(const SkBitmap& input,
                       const SkIRect& rect,
                       GrMorphologyEffect::MorphologyType morphType,
                       SkISize radius,
                       SkBitmap* dst) {
     SkAutoTUnref<GrTexture> srcTexture(SkRef(input.getTexture()));
     SkASSERT(srcTexture);
     GrContext* context = srcTexture->getContext();
 
     // setup new clip
     GrClip clip(SkRect::MakeWH(SkIntToScalar(srcTexture->width()),
                                SkIntToScalar(srcTexture->height())));
 
     SkIRect dstRect = SkIRect::MakeWH(rect.width(), rect.height());
     GrSurfaceDesc desc;
     desc.fFlags = kRenderTarget_GrSurfaceFlag;
     desc.fWidth = rect.width();
     desc.fHeight = rect.height();
     desc.fConfig = kSkia8888_GrPixelConfig;
     SkIRect srcRect = rect;
 
+    GrDrawContext* drawContext = context->drawContext();
+    if (!drawContext) {
+        return false;
+    }
+
     if (radius.fWidth > 0) {
         GrTexture* texture = context->textureProvider()->refScratchTexture(
             desc, GrTextureProvider::kApprox_ScratchTexMatch);
         if (NULL == texture) {
             return false;
         }
-        apply_morphology_pass(context, texture->asRenderTarget(), clip, srcTexture,
+        apply_morphology_pass(drawContext, texture->asRenderTarget(), clip, srcTexture,
                               srcRect, dstRect, radius.fWidth, morphType,
                               Gr1DKernelEffect::kX_Direction);
         SkIRect clearRect = SkIRect::MakeXYWH(dstRect.fLeft, dstRect.fBottom,
                                               dstRect.width(), radius.fHeight);
         GrColor clearColor = GrMorphologyEffect::kErode_MorphologyType == morphType ?
                                 SK_ColorWHITE :
                                 SK_ColorTRANSPARENT;
-        context->clear(&clearRect, clearColor, false, texture->asRenderTarget());
+        drawContext->clear(texture->asRenderTarget(), &clearRect, clearColor, false);
         srcTexture.reset(texture);
         srcRect = dstRect;
     }
     if (radius.fHeight > 0) {
         GrTexture* texture = context->textureProvider()->refScratchTexture(desc,
             GrTextureProvider::kApprox_ScratchTexMatch);
         if (NULL == texture) {
             return false;
         }
-        apply_morphology_pass(context, texture->asRenderTarget(), clip, srcTexture,
+        apply_morphology_pass(drawContext, texture->asRenderTarget(), clip, srcTexture,
                               srcRect, dstRect, radius.fHeight, morphType,
                               Gr1DKernelEffect::kY_Direction);
         srcTexture.reset(texture);
     }
     SkImageFilter::WrapTexture(srcTexture, rect.width(), rect.height(), dst);
     return true;
 }
 
 };
 
@@ skipping 45 matching lines @@
                                          SkBitmap* result, SkIPoint* offset) const {
     return this->filterImageGPUGeneric(true, proxy, src, ctx, result, offset);
 }
 
 bool SkErodeImageFilter::filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context& ctx,
                                         SkBitmap* result, SkIPoint* offset) const {
     return this->filterImageGPUGeneric(false, proxy, src, ctx, result, offset);
 }
 
 #endif