1 2 /* 3 * Copyright 2011 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 #ifndef GrTexture_DEFINED 10 #define GrTexture_DEFINED 11 12 #include "GrBackendSurface.h" 13 #include "GrSamplerState.h" 14 #include "GrSurface.h" 15 #include "SkImage.h" 16 #include "SkPoint.h" 17 #include "SkRefCnt.h" 18 #include "../private/GrTypesPriv.h" 19 20 class GrTexturePriv; 21 22 class SK_API GrTexture : virtual public GrSurface { 23 public: asTexture()24 GrTexture* asTexture() override { return this; } asTexture()25 const GrTexture* asTexture() const override { return this; } 26 27 virtual GrBackendTexture getBackendTexture() const = 0; 28 29 /** 30 * This function indicates that the texture parameters (wrap mode, filtering, ...) have been 31 * changed externally to Skia. 32 */ 33 virtual void textureParamsModified() = 0; 34 35 /** 36 * This function steals the backend texture from a uniquely owned GrTexture with no pending 37 * IO, passing it out to the caller. The GrTexture is deleted in the process. 38 * 39 * Note that if the GrTexture is not uniquely owned (no other refs), or has pending IO, this 40 * function will fail. 41 */ 42 static bool StealBackendTexture(sk_sp<GrTexture>, 43 GrBackendTexture*, 44 SkImage::BackendTextureReleaseProc*); 45 46 #ifdef SK_DEBUG validate()47 void validate() const { 48 this->INHERITED::validate(); 49 } 50 #endif 51 52 virtual void setRelease(sk_sp<GrReleaseProcHelper> releaseHelper) = 0; 53 54 // These match the definitions in SkImage, from whence they came. 55 // TODO: Either move Chrome over to new api or remove their need to call this on GrTexture 56 typedef void* ReleaseCtx; 57 typedef void (*ReleaseProc)(ReleaseCtx); setRelease(ReleaseProc proc,ReleaseCtx ctx)58 void setRelease(ReleaseProc proc, ReleaseCtx ctx) { 59 sk_sp<GrReleaseProcHelper> helper(new GrReleaseProcHelper(proc, ctx)); 60 this->setRelease(std::move(helper)); 61 } 62 63 /** 64 * Installs a proc on this texture. It will be called when the texture becomes "idle". Idle is 65 * defined to mean that the texture has no refs or pending IOs and that GPU I/O operations on 66 * the texture are completed if the backend API disallows deletion of a texture before such 67 * operations occur (e.g. Vulkan). After the idle proc is called it is removed. The idle proc 68 * will always be called before the texture is destroyed, even in unusual shutdown scenarios 69 * (e.g. GrContext::abandonContext()). 70 */ 71 using IdleProc = void(void*); 72 virtual void setIdleProc(IdleProc, void* context) = 0; 73 virtual void* idleContext() const = 0; 74 75 /** Access methods that are only to be used within Skia code. */ 76 inline GrTexturePriv texturePriv(); 77 inline const GrTexturePriv texturePriv() const; 78 79 protected: 80 GrTexture(GrGpu*, const GrSurfaceDesc&, GrTextureType, GrMipMapsStatus); 81 82 virtual bool onStealBackendTexture(GrBackendTexture*, SkImage::BackendTextureReleaseProc*) = 0; 83 84 private: 85 void computeScratchKey(GrScratchKey*) const override; 86 size_t onGpuMemorySize() const override; 87 void markMipMapsDirty(); 88 void markMipMapsClean(); 89 90 GrTextureType fTextureType; 91 GrMipMapsStatus fMipMapsStatus; 92 int fMaxMipMapLevel; 93 friend class GrTexturePriv; 94 95 typedef GrSurface INHERITED; 96 }; 97 98 #endif 99