1 /* 2 * Copyright 2018 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef GrProxyProvider_DEFINED 9 #define GrProxyProvider_DEFINED 10 11 #include "GrCaps.h" 12 #include "GrResourceKey.h" 13 #include "GrTextureProxy.h" 14 #include "GrTypes.h" 15 #include "SkRefCnt.h" 16 #include "SkTDynamicHash.h" 17 18 class GrResourceProvider; 19 class GrSingleOwner; 20 class GrBackendRenderTarget; 21 class SkBitmap; 22 class SkImage; 23 24 /* 25 * A factory for creating GrSurfaceProxy-derived objects. 26 */ 27 class GrProxyProvider { 28 public: 29 GrProxyProvider(GrResourceProvider*, GrResourceCache*, sk_sp<const GrCaps>, GrSingleOwner*); 30 31 ~GrProxyProvider(); 32 33 /* 34 * Assigns a unique key to a proxy. The proxy will be findable via this key using 35 * findProxyByUniqueKey(). It is an error if an existing proxy already has a key. 36 */ 37 bool assignUniqueKeyToProxy(const GrUniqueKey&, GrTextureProxy*); 38 39 /* 40 * Sets the unique key of the provided proxy to the unique key of the surface. The surface must 41 * have a valid unique key. 42 */ 43 void adoptUniqueKeyFromSurface(GrTextureProxy* proxy, const GrSurface*); 44 45 /* 46 * Removes a unique key from a proxy. If the proxy has already been instantiated, it will 47 * also remove the unique key from the target GrSurface. 48 */ 49 void removeUniqueKeyFromProxy(const GrUniqueKey&, GrTextureProxy*); 50 51 /* 52 * Finds a proxy by unique key. 53 */ 54 sk_sp<GrTextureProxy> findProxyByUniqueKey(const GrUniqueKey&, GrSurfaceOrigin); 55 56 /* 57 * Finds a proxy by unique key or creates a new one that wraps a resource matching the unique 58 * key. 59 */ 60 sk_sp<GrTextureProxy> findOrCreateProxyByUniqueKey(const GrUniqueKey&, GrSurfaceOrigin); 61 62 /* 63 * Create a texture proxy that is backed by an instantiated GrSurface. This is almost entirely 64 * used by Skia's testing code. 65 * DDL TODO: remove the remaining Skia-internal use of this method and make it truly 66 * testing-only. 67 */ 68 sk_sp<GrTextureProxy> createInstantiatedProxy(const GrSurfaceDesc&, SkBackingFit, SkBudgeted, 69 uint32_t flags = 0); 70 71 /* 72 * Create an un-mipmapped texture proxy with data. 73 * DDL TODO: need to refine ownership semantics of 'srcData' if we're in completely 74 * deferred mode 75 */ 76 sk_sp<GrTextureProxy> createTextureProxy(const GrSurfaceDesc&, SkBudgeted, 77 const void* srcData, size_t rowBytes); 78 79 /* 80 * Create an un-mipmapped texture proxy with data. The SkImage must be a raster backend image. 81 * Since the SkImage is ref counted, we simply take a ref on it to keep the data alive until we 82 * actually upload the data to the gpu. 83 */ 84 sk_sp<GrTextureProxy> createTextureProxy(sk_sp<SkImage> srcImage, 85 GrSurfaceFlags flags, 86 GrSurfaceOrigin origin, 87 int sampleCnt, 88 SkBudgeted budgeted, 89 SkBackingFit fit); 90 91 /* 92 * Create a mipmapped texture proxy without any data. 93 * 94 * Like the call above but there are no texels to upload. A texture proxy is returned that 95 * simply has space allocated for the mips. We will allocated the full amount of mip levels 96 * based on the width and height in the GrSurfaceDesc. 97 */ 98 sk_sp<GrTextureProxy> createMipMapProxy(const GrSurfaceDesc&, SkBudgeted); 99 100 /* 101 * Creates a new mipmapped texture proxy for the bitmap with mip levels generated by the cpu. 102 */ 103 sk_sp<GrTextureProxy> createMipMapProxyFromBitmap(const SkBitmap& bitmap, 104 SkColorSpace* dstColorSpace); 105 106 /* 107 * Create a GrSurfaceProxy without any data. 108 */ 109 sk_sp<GrTextureProxy> createProxy(const GrSurfaceDesc&, GrMipMapped, SkBackingFit, SkBudgeted, 110 uint32_t flags); 111 112 sk_sp<GrTextureProxy> createProxy(const GrSurfaceDesc& desc, SkBackingFit fit, 113 SkBudgeted budgeted, uint32_t flags = 0) { 114 return this->createProxy(desc, GrMipMapped::kNo, fit, budgeted, flags); 115 } 116 117 // These match the definitions in SkImage & GrTexture.h, for whence they came 118 typedef void* ReleaseContext; 119 typedef void (*ReleaseProc)(ReleaseContext); 120 121 /* 122 * Create a texture proxy that wraps a (non-renderable) backend texture. 123 */ 124 sk_sp<GrTextureProxy> createWrappedTextureProxy(const GrBackendTexture&, GrSurfaceOrigin, 125 GrWrapOwnership = kBorrow_GrWrapOwnership, 126 ReleaseProc = nullptr, 127 ReleaseContext = nullptr); 128 129 /* 130 * Create a texture proxy that wraps a backend texture and is both texture-able and renderable 131 */ 132 sk_sp<GrTextureProxy> createWrappedTextureProxy(const GrBackendTexture&, 133 GrSurfaceOrigin, 134 int sampleCnt); 135 136 /* 137 * Create a render target proxy that wraps a backend rendertarget 138 */ 139 sk_sp<GrSurfaceProxy> createWrappedRenderTargetProxy(const GrBackendRenderTarget&, 140 GrSurfaceOrigin); 141 142 /* 143 * Create a render target proxy that wraps a backend texture? 144 */ 145 sk_sp<GrSurfaceProxy> createWrappedRenderTargetProxy(const GrBackendTexture& tex, 146 GrSurfaceOrigin origin, 147 int sampleCnt); 148 149 using LazyInstantiateCallback = std::function<sk_sp<GrSurface>(GrResourceProvider*)>; 150 enum class Textureable : bool { 151 kNo = false, 152 kYes = true 153 }; 154 155 enum class Renderable : bool { 156 kNo = false, 157 kYes = true 158 }; 159 160 /** 161 * Creates a texture proxy that will be instantiated by a user-supplied callback during flush. 162 * (Stencil is not supported by this method.) The width and height must either both be greater 163 * than 0 or both less than or equal to zero. A non-positive value is a signal that the width 164 * and height are currently unknown. 165 * 166 * When called, the callback must be able to cleanup any resources that it captured at creation. 167 * It also must support being passed in a null GrResourceProvider. When this happens, the 168 * callback should cleanup any resources it captured and return an empty sk_sp<GrTextureProxy>. 169 */ 170 sk_sp<GrTextureProxy> createLazyProxy(LazyInstantiateCallback&&, const GrSurfaceDesc&, 171 GrMipMapped, GrRenderTargetFlags, SkBackingFit, 172 SkBudgeted); 173 174 sk_sp<GrTextureProxy> createLazyProxy(LazyInstantiateCallback&&, const GrSurfaceDesc&, 175 GrMipMapped, SkBackingFit, SkBudgeted); 176 177 /** 178 * Fully lazy proxies have unspecified width and height. Methods that rely on those values 179 * (e.g., width, height, getBoundsRect) should be avoided. 180 */ 181 sk_sp<GrTextureProxy> createFullyLazyProxy(LazyInstantiateCallback&&, 182 Renderable, GrSurfaceOrigin, GrPixelConfig); 183 184 sk_sp<GrRenderTargetProxy> createLazyRenderTargetProxy(LazyInstantiateCallback&&, 185 const GrSurfaceDesc&, 186 GrRenderTargetFlags, Textureable, 187 GrMipMapped, SkBackingFit, SkBudgeted); 188 189 // 'proxy' is about to be used as a texture src or drawn to. This query can be used to 190 // determine if it is going to need a texture domain or a full clear. 191 static bool IsFunctionallyExact(GrSurfaceProxy* proxy); 192 193 /** 194 * Either the proxy attached to the unique key is being deleted (in which case we 195 * don't want it cluttering up the hash table) or the client has indicated that 196 * it will never refer to the unique key again. In either case, remove the key 197 * from the hash table. 198 * Note: this does not, by itself, alter unique key attached to the underlying GrTexture. 199 */ 200 void processInvalidProxyUniqueKey(const GrUniqueKey&); 201 202 /** 203 * Same as above, but you must pass in a GrTextureProxy to save having to search for it. The 204 * GrUniqueKey of the proxy must be valid and it must match the passed in key. This function 205 * also gives the option to invalidate the GrUniqueKey on the underlying GrTexture. 206 */ 207 void processInvalidProxyUniqueKey(const GrUniqueKey&, GrTextureProxy*, bool invalidateSurface); 208 209 const GrCaps* caps() const { return fCaps.get(); } 210 sk_sp<const GrCaps> refCaps() const { return fCaps; } 211 212 void abandon() { 213 fResourceCache = nullptr; 214 fResourceProvider = nullptr; 215 fAbandoned = true; 216 } 217 218 bool isAbandoned() const { 219 #ifdef SK_DEBUG 220 if (fAbandoned) { 221 SkASSERT(!fResourceCache && !fResourceProvider); 222 } 223 #endif 224 return fAbandoned; 225 } 226 227 int numUniqueKeyProxies_TestOnly() const; 228 229 void removeAllUniqueKeys(); 230 231 /** 232 * Helper function for callers who are wrapping a bitmap into an SkImage so they know whether or 233 * not that bitmap should be copied or not. 234 */ 235 bool mutableBitmapsNeedCopy() const { return !SkToBool(fResourceProvider); } 236 237 private: 238 friend class GrAHardwareBufferImageGenerator; // for createWrapped 239 240 sk_sp<GrTextureProxy> createWrapped(sk_sp<GrTexture> tex, GrSurfaceOrigin origin); 241 242 struct UniquelyKeyedProxyHashTraits { 243 static const GrUniqueKey& GetKey(const GrTextureProxy& p) { return p.getUniqueKey(); } 244 245 static uint32_t Hash(const GrUniqueKey& key) { return key.hash(); } 246 }; 247 typedef SkTDynamicHash<GrTextureProxy, GrUniqueKey, UniquelyKeyedProxyHashTraits> UniquelyKeyedProxyHash; 248 249 // This holds the texture proxies that have unique keys. The resourceCache does not get a ref 250 // on these proxies but they must send a message to the resourceCache when they are deleted. 251 UniquelyKeyedProxyHash fUniquelyKeyedProxies; 252 253 GrResourceProvider* fResourceProvider; 254 GrResourceCache* fResourceCache; 255 bool fAbandoned; 256 sk_sp<const GrCaps> fCaps; 257 258 // In debug builds we guard against improper thread handling 259 SkDEBUGCODE(mutable GrSingleOwner* fSingleOwner;) 260 }; 261 262 #endif 263
