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/*
* 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 GrGLTexture_DEFINED
#define GrGLTexture_DEFINED
#include "GrGpu.h"
#include "GrTexture.h"
#include "GrGLUtil.h"
class GrGLGpu;
class GrGLTexture : public GrTexture {
public:
struct TexParams {
GrGLenum fMinFilter;
GrGLenum fMagFilter;
GrGLenum fWrapS;
GrGLenum fWrapT;
GrGLenum fMaxMipMapLevel;
GrGLenum fSwizzleRGBA[4];
void invalidate() { memset(this, 0xff, sizeof(TexParams)); }
};
struct IDDesc {
GrGLTextureInfo fInfo;
GrGpuResource::LifeCycle fLifeCycle;
};
GrGLTexture(GrGLGpu*, const GrSurfaceDesc&, const IDDesc&);
GrGLTexture(GrGLGpu*, const GrSurfaceDesc&, const IDDesc&, bool wasMipMapDataProvided);
GrBackendObject getTextureHandle() const override;
void textureParamsModified() override { fTexParams.invalidate(); }
// These functions are used to track the texture parameters associated with the texture.
const TexParams& getCachedTexParams(GrGpu::ResetTimestamp* timestamp) const {
*timestamp = fTexParamsTimestamp;
return fTexParams;
}
void setCachedTexParams(const TexParams& texParams,
GrGpu::ResetTimestamp timestamp) {
fTexParams = texParams;
fTexParamsTimestamp = timestamp;
}
GrGLuint textureID() const { return fInfo.fID; }
GrGLenum target() const { return fInfo.fTarget; }
protected:
// The public constructor registers this object with the cache. However, only the most derived
// class should register with the cache. This constructor does not do the registration and
// rather moves that burden onto the derived class.
enum Derived { kDerived };
GrGLTexture(GrGLGpu*, const GrSurfaceDesc&, const IDDesc&, Derived);
void init(const GrSurfaceDesc&, const IDDesc&);
void onAbandon() override;
void onRelease() override;
void setMemoryBacking(SkTraceMemoryDump* traceMemoryDump,
const SkString& dumpName) const override;
private:
TexParams fTexParams;
GrGpu::ResetTimestamp fTexParamsTimestamp;
// Holds the texture target and ID. A pointer to this may be shared to external clients for
// direct interaction with the GL object.
GrGLTextureInfo fInfo;
// We track this separately from GrGpuResource because this may be both a texture and a render
// target, and the texture may be wrapped while the render target is not.
LifeCycle fTextureIDLifecycle;
typedef GrTexture INHERITED;
};
#endif
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