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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 GrBufferAccess_DEFINED
#define GrBufferAccess_DEFINED
#include "GrBuffer.h"
#include "GrGpuResourceRef.h"
/**
* Used to represent a texel buffer that will be read in a GrProcessor. It holds a GrBuffer along
* with an associated offset and texel config.
*/
class GrBufferAccess : public SkNoncopyable {
public:
/**
* Must be initialized before adding to a GrProcessor's buffer access list.
*/
void reset(GrPixelConfig texelConfig, GrBuffer* buffer,
GrShaderFlags visibility = kFragment_GrShaderFlag) {
fTexelConfig = texelConfig;
fBuffer.set(SkRef(buffer), kRead_GrIOType);
fVisibility = visibility;
}
bool operator==(const GrBufferAccess& that) const {
return fTexelConfig == that.fTexelConfig &&
this->buffer() == that.buffer() &&
fVisibility == that.fVisibility;
}
bool operator!=(const GrBufferAccess& that) const { return !(*this == that); }
GrPixelConfig texelConfig() const { return fTexelConfig; }
GrBuffer* buffer() const { return fBuffer.get(); }
GrShaderFlags visibility() const { return fVisibility; }
/**
* For internal use by GrProcessor.
*/
const GrGpuResourceRef* getProgramBuffer() const { return &fBuffer;}
private:
GrPixelConfig fTexelConfig;
GrTGpuResourceRef<GrBuffer> fBuffer;
GrShaderFlags fVisibility;
typedef SkNoncopyable INHERITED;
};
#endif
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