Move copy-surface-as-draw fallback to GrGLGpu.

src/gpu/gl/GrGLGpu.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLGpu_DEFINED
 #define GrGLGpu_DEFINED
 
@@ skipping 83 matching lines @@
     }
     void notifyIndexBufferDelete(GrGLuint id) {
         fHWGeometryState.notifyIndexBufferDelete(id);
     }
 
     bool copySurface(GrSurface* dst,
                      GrSurface* src,
                      const SkIRect& srcRect,
                      const SkIPoint& dstPoint) override;
 
-    bool canCopySurface(const GrSurface* dst,
-                        const GrSurface* src,
-                        const SkIRect& srcRect,
-                        const SkIPoint& dstPoint) override;
-
     void xferBarrier(GrXferBarrierType) override;
 
     void buildProgramDesc(GrProgramDesc*,
                           const GrPrimitiveProcessor&,
                           const GrPipeline&,
                           const GrBatchTracker&) const override;
 
 private:
     // GrGpu overrides
     void onResetContext(uint32_t resetBits) override;
@@ skipping 57 matching lines @@
     // Sets up vertex attribute pointers and strides. On return indexOffsetInBytes gives the offset
     // an into the index buffer. It does not account for vertices.startIndex() but rather the start
     // index is relative to the returned offset.
     void setupGeometry(const GrPrimitiveProcessor&,
                        const GrNonInstancedVertices& vertices,
                        size_t* indexOffsetInBytes);
 
     // Subclasses should call this to flush the blend state.
     void flushBlend(const GrXferProcessor::BlendInfo& blendInfo);
 
+    void copySurfaceAsDraw(GrSurface* dst,
+                           GrSurface* src,
+                           const SkIRect& srcRect,
+                           const SkIPoint& dstPoint);
+    void copySurfaceAsCopyTexSubImage(GrSurface* dst,
+                                      GrSurface* src,
+                                      const SkIRect& srcRect,
+                                      const SkIPoint& dstPoint);
+    bool copySurfaceAsBlitFramebuffer(GrSurface* dst,
+                                      GrSurface* src,
+                                      const SkIRect& srcRect,
+                                      const SkIPoint& dstPoint);
+
     bool hasExtension(const char* ext) const { return fGLContext.hasExtension(ext); }
 
     static bool BlendCoeffReferencesConstant(GrBlendCoeff coeff);
 
     class ProgramCache : public ::SkNoncopyable {
     public:
         ProgramCache(GrGLGpu* gpu);
         ~ProgramCache();
 
         void abandon();
@@ skipping 91 matching lines @@
     enum TempFBOTarget {
         kSrc_TempFBOTarget,
         kDst_TempFBOTarget
     };
 
     GrGLuint bindSurfaceAsFBO(GrSurface* surface, GrGLenum fboTarget, GrGLIRect* viewport,
                               TempFBOTarget tempFBOTarget);
 
     void unbindTextureFromFBO(GrGLenum fboTarget);
 
+    void createCopyProgram();
+
     GrGLContext fGLContext;
 
     // GL program-related state
     ProgramCache*               fProgramCache;
     SkAutoTUnref<GrGLProgram>   fCurrentProgram;
 
     ///////////////////////////////////////////////////////////////////////////
     ///@name Caching of GL State
     ///@{
     int                         fHWActiveTextureUnitIdx;
@@ skipping 106 matching lines @@
         /**
          * Binds the vertex array object that should be used to render from the vertex buffer.
          * The vertex array is bound and its attrib array state object is returned. The vertex
          * buffer is bound. The index buffer (if non-NULL) is bound to the vertex array. The
          * returned GrGLAttribArrayState should be used to set vertex attribute arrays.
          */
         GrGLAttribArrayState* bindArrayAndBuffersToDraw(GrGLGpu* gpu,
                                                         const GrGLVertexBuffer* vbuffer,
                                                         const GrGLIndexBuffer* ibuffer);
 
+        /** Variants of the above that takes GL buffer IDs. Note that 0 does not imply that a 
+            buffer won't be bound. The "default buffer" will be bound, which is used for client-side
+            array rendering. */
+        GrGLAttribArrayState* bindArrayAndBufferToDraw(GrGLGpu* gpu, GrGLuint vbufferID);
+        GrGLAttribArrayState* bindArrayAndBuffersToDraw(GrGLGpu* gpu,
+                                                        GrGLuint vbufferID,
+                                                        GrGLuint ibufferID);
+
     private:
+        GrGLAttribArrayState* internalBind(GrGLGpu* gpu, GrGLuint vbufferID, GrGLuint* ibufferID);
+
         GrGLuint                fBoundVertexArrayID;
         GrGLuint                fBoundVertexBufferID;
         bool                    fBoundVertexArrayIDIsValid;
         bool                    fBoundVertexBufferIDIsValid;
 
         GrGLuint                fDefaultVertexArrayBoundIndexBufferID;
         bool                    fDefaultVertexArrayBoundIndexBufferIDIsValid;
         // We return a non-const pointer to this from bindArrayAndBuffersToDraw when vertex array 0
         // is bound. However, this class is internal to GrGLGpu and this object never leaks out of
         // GrGLGpu.
@@ skipping 13 matching lines @@
 
         void invalidate() {
             fEquation = static_cast<GrBlendEquation>(-1);
             fSrcCoeff = static_cast<GrBlendCoeff>(-1);
             fDstCoeff = static_cast<GrBlendCoeff>(-1);
             fConstColorValid = false;
             fEnabled = kUnknown_TriState;
         }
     } fHWBlendState;
 
+    /** IDs for copy surface program. */
+    struct {
+        GrGLuint    fProgram;
+        GrGLint     fTextureUniform;
+        GrGLint     fTexCoordXformUniform;
+        GrGLint     fPosXformUniform;
+        GrGLuint    fArrayBuffer;
+    } fCopyProgram;
+
     TriState fMSAAEnabled;
 
     GrStencilSettings           fHWStencilSettings;
     TriState                    fHWStencilTestEnabled;
 
 
     GrPipelineBuilder::DrawFace fHWDrawFace;
     TriState                    fHWWriteToColor;
     TriState                    fHWDitherEnabled;
     uint32_t                    fHWBoundRenderTargetUniqueID;
     SkTArray<uint32_t, true>    fHWBoundTextureUniqueIDs;
 
     ///@}
 
     // we record what stencil format worked last time to hopefully exit early
     // from our loop that tries stencil formats and calls check fb status.
     int fLastSuccessfulStencilFmtIdx;
 
     typedef GrGpu INHERITED;
     friend class GrGLPathRendering; // For accessing setTextureUnit.
 };
 
 #endif