1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/gpu/gl/GrGLTexture.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,111 @@
1.4 +/*
1.5 + * Copyright 2011 Google Inc.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license that can be
1.8 + * found in the LICENSE file.
1.9 + */
1.10 +
1.11 +
1.12 +#ifndef GrGLTexture_DEFINED
1.13 +#define GrGLTexture_DEFINED
1.14 +
1.15 +#include "GrGpu.h"
1.16 +#include "GrGLRenderTarget.h"
1.17 +
1.18 +/**
1.19 + * A ref counted tex id that deletes the texture in its destructor.
1.20 + */
1.21 +class GrGLTexID : public SkRefCnt {
1.22 +public:
1.23 + SK_DECLARE_INST_COUNT(GrGLTexID)
1.24 +
1.25 + GrGLTexID(const GrGLInterface* gl, GrGLuint texID, bool isWrapped)
1.26 + : fGL(gl)
1.27 + , fTexID(texID)
1.28 + , fIsWrapped(isWrapped) {
1.29 + }
1.30 +
1.31 + virtual ~GrGLTexID() {
1.32 + if (0 != fTexID && !fIsWrapped) {
1.33 + GR_GL_CALL(fGL, DeleteTextures(1, &fTexID));
1.34 + }
1.35 + }
1.36 +
1.37 + void abandon() { fTexID = 0; }
1.38 + GrGLuint id() const { return fTexID; }
1.39 +
1.40 +private:
1.41 + const GrGLInterface* fGL;
1.42 + GrGLuint fTexID;
1.43 + bool fIsWrapped;
1.44 +
1.45 + typedef SkRefCnt INHERITED;
1.46 +};
1.47 +
1.48 +////////////////////////////////////////////////////////////////////////////////
1.49 +
1.50 +
1.51 +class GrGLTexture : public GrTexture {
1.52 +
1.53 +public:
1.54 + struct TexParams {
1.55 + GrGLenum fMinFilter;
1.56 + GrGLenum fMagFilter;
1.57 + GrGLenum fWrapS;
1.58 + GrGLenum fWrapT;
1.59 + GrGLenum fSwizzleRGBA[4];
1.60 + void invalidate() { memset(this, 0xff, sizeof(TexParams)); }
1.61 + };
1.62 +
1.63 + struct Desc : public GrTextureDesc {
1.64 + GrGLuint fTextureID;
1.65 + bool fIsWrapped;
1.66 + };
1.67 +
1.68 + // creates a texture that is also an RT
1.69 + GrGLTexture(GrGpuGL* gpu,
1.70 + const Desc& textureDesc,
1.71 + const GrGLRenderTarget::Desc& rtDesc);
1.72 +
1.73 + // creates a non-RT texture
1.74 + GrGLTexture(GrGpuGL* gpu,
1.75 + const Desc& textureDesc);
1.76 +
1.77 + virtual ~GrGLTexture() { this->release(); }
1.78 +
1.79 + virtual GrBackendObject getTextureHandle() const SK_OVERRIDE;
1.80 +
1.81 + virtual void invalidateCachedState() SK_OVERRIDE { fTexParams.invalidate(); }
1.82 +
1.83 + // These functions are used to track the texture parameters associated with the texture.
1.84 + const TexParams& getCachedTexParams(GrGpu::ResetTimestamp* timestamp) const {
1.85 + *timestamp = fTexParamsTimestamp;
1.86 + return fTexParams;
1.87 + }
1.88 +
1.89 + void setCachedTexParams(const TexParams& texParams,
1.90 + GrGpu::ResetTimestamp timestamp) {
1.91 + fTexParams = texParams;
1.92 + fTexParamsTimestamp = timestamp;
1.93 + }
1.94 +
1.95 + GrGLuint textureID() const { return (NULL != fTexIDObj.get()) ? fTexIDObj->id() : 0; }
1.96 +
1.97 +protected:
1.98 + // overrides of GrTexture
1.99 + virtual void onAbandon() SK_OVERRIDE;
1.100 + virtual void onRelease() SK_OVERRIDE;
1.101 +
1.102 +private:
1.103 + TexParams fTexParams;
1.104 + GrGpu::ResetTimestamp fTexParamsTimestamp;
1.105 + SkAutoTUnref<GrGLTexID> fTexIDObj;
1.106 +
1.107 + void init(GrGpuGL* gpu,
1.108 + const Desc& textureDesc,
1.109 + const GrGLRenderTarget::Desc* rtDesc);
1.110 +
1.111 + typedef GrTexture INHERITED;
1.112 +};
1.113 +
1.114 +#endif
