GrGLBuffer.h

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/*
 * Copyright 2016 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
#ifndef GrGLBuffer_DEFINED
#define GrGLBuffer_DEFINED
 
#include "include/gpu/gl/GrGLTypes.h"
#include "src/gpu/ganesh/GrGpuBuffer.h"
 
class GrGLGpu;
class GrGLCaps;
 
class GrGLBuffer : public GrGpuBuffer {
public:
    static sk_sp<GrGLBuffer> Make(GrGLGpu*,
                                  size_t size,
                                  GrGpuBufferType intendedType,
                                  GrAccessPattern);
 
    ~GrGLBuffer() override {
        // either release or abandon should have been called by the owner of this object.
        SkASSERT(0 == fBufferID);
    }
 
    GrGLuint bufferID() const { return fBufferID; }
 
    void setHasAttachedToTexture() { fHasAttachedToTexture = true; }
    bool hasAttachedToTexture() const { return fHasAttachedToTexture; }
 
protected:
    GrGLBuffer(GrGLGpu*,
               size_t size,
               GrGpuBufferType intendedType,
               GrAccessPattern,
               std::string_view label);
 
    void onAbandon() override;
    void onRelease() override;
    void setMemoryBacking(SkTraceMemoryDump* traceMemoryDump,
                          const SkString& dumpName) const override;
 
private:
    GrGLGpu* glGpu() const;
    const GrGLCaps& glCaps() const;
 
    void onMap(MapType) override;
    void onUnmap(MapType) override;
    bool onClearToZero() override;
    bool onUpdateData(const void* src, size_t offset, size_t size, bool preserve) override;
 
    void onSetLabel() override;
 
    GrGpuBufferType fIntendedType;
    GrGLuint        fBufferID;
    GrGLenum        fUsage;
    bool            fHasAttachedToTexture;
 
    using INHERITED = GrGpuBuffer;
};
 
#endif