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/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef GrTexture_DEFINED
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#define GrTexture_DEFINED
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#include "GrBackendSurface.h"
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#include "GrSamplerState.h"
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#include "GrSurface.h"
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#include "SkImage.h"
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#include "SkPoint.h"
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#include "SkRefCnt.h"
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#include "../private/GrTypesPriv.h"
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class GrTexturePriv;
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class SK_API GrTexture : virtual public GrSurface {
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public:
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GrTexture* asTexture() override { return this; }
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const GrTexture* asTexture() const override { return this; }
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virtual GrBackendTexture getBackendTexture() const = 0;
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/**
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* This function indicates that the texture parameters (wrap mode, filtering, ...) have been
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* changed externally to Skia.
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*/
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virtual void textureParamsModified() = 0;
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/**
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* This function steals the backend texture from a uniquely owned GrTexture with no pending
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* IO, passing it out to the caller. The GrTexture is deleted in the process.
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*
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* Note that if the GrTexture is not uniquely owned (no other refs), or has pending IO, this
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* function will fail.
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*/
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static bool StealBackendTexture(sk_sp<GrTexture>,
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GrBackendTexture*,
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SkImage::BackendTextureReleaseProc*);
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#ifdef SK_DEBUG
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void validate() const {
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this->INHERITED::validate();
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}
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#endif
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/**
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* Installs a proc on this texture. It will be called when the texture becomes "idle". Idle is
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* defined to mean that the texture has no refs or pending IOs and that GPU I/O operations on
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* the texture are completed if the backend API disallows deletion of a texture before such
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* operations occur (e.g. Vulkan). After the idle proc is called it is removed. The idle proc
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* will always be called before the texture is destroyed, even in unusual shutdown scenarios
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* (e.g. GrContext::abandonContext()).
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*/
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virtual void addIdleProc(sk_sp<GrRefCntedCallback> callback) {
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callback->addChild(std::move(fIdleCallback));
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fIdleCallback = std::move(callback);
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}
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/** Access methods that are only to be used within Skia code. */
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inline GrTexturePriv texturePriv();
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inline const GrTexturePriv texturePriv() const;
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protected:
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GrTexture(GrGpu*, const GrSurfaceDesc&, GrTextureType, GrMipMapsStatus);
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virtual bool onStealBackendTexture(GrBackendTexture*, SkImage::BackendTextureReleaseProc*) = 0;
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sk_sp<GrRefCntedCallback> fIdleCallback;
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void willRemoveLastRefOrPendingIO() override {
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// We're about to be idle in the resource cache. Do our part to trigger the idle callback.
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fIdleCallback.reset();
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}
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private:
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void computeScratchKey(GrScratchKey*) const override;
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size_t onGpuMemorySize() const override;
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void markMipMapsDirty();
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void markMipMapsClean();
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GrTextureType fTextureType;
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GrMipMapsStatus fMipMapsStatus;
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int fMaxMipMapLevel;
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friend class GrTexturePriv;
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typedef GrSurface INHERITED;
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};
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#endif
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