Refugee from Dead Machine 4: MDB Monster

include/gpu/GrDrawContext.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrDrawContext_DEFINED
 #define GrDrawContext_DEFINED
 
 #include "GrColor.h"
 #include "SkRefCnt.h"
 #include "SkSurfaceProps.h"
 
 class GrBatch;
 class GrClip;
 class GrContext;
 class GrDrawTarget;
 class GrPaint;
 class GrPathProcessor;
 class GrPathRange;
 class GrPipelineBuilder;
 class GrRenderTarget;
 class GrStrokeInfo;
 class GrSurface;
 class GrTextContext;
+class GrTexture;
 class SkDrawFilter;
 struct SkIPoint;
 struct SkIRect;
 class SkMatrix;
 class SkPaint;
 class SkPath;
 struct SkPoint;
 struct SkRect;
 class SkRRect;
 class SkTextBlob;
 
 /*
  * A helper object to orchestrate draws
  */
 class SK_API GrDrawContext : public SkRefCnt {
 public:
     ~GrDrawContext() override;
 
+    // This closes off other's draw commands since at this point in its

[bsalomon, 2015/07/08 19:06:36]

It looks like the user of a GrDrawContext is responsible for explicitly
inserting the dependencies, but don't we have all the info we need to insert
them implicitly?

+    // execution its result is needed by the current draw context.
+    void uses(GrDrawContext* other) {}
+
+    // TODO: ideally we would know if this guy resulted from some draws
+    void uses(GrTexture* tex) {}
+    //void done() {}
+
     void copySurface(GrRenderTarget* dst, GrSurface* src,
                      const SkIRect& srcRect, const SkIPoint& dstPoint);
 
     // TODO: it is odd that we need both the SkPaint in the following 3 methods.
     // We should extract the text parameters from SkPaint and pass them separately
     // akin to GrStrokeInfo (GrTextInfo?)
     void drawText(GrRenderTarget*, const GrClip&,  const GrPaint&, const SkPaint&,
                   const SkMatrix& viewMatrix, const char text[], size_t byteLength,
                   SkScalar x, SkScalar y, const SkIRect& clipBounds);
     void drawPosText(GrRenderTarget*, const GrClip&, const GrPaint&, const SkPaint&,
@@ skipping 213 matching lines @@
     void drawBatch(GrPipelineBuilder* pipelineBuilder, GrBatch* batch);
 
     GrContext*          fContext;     // owning context -> no ref
     GrDrawTarget*       fDrawTarget;
     GrTextContext*      fTextContext; // lazily created
 
     SkSurfaceProps      fSurfaceProps;
 };
 
 #endif