Rewrite GrTextureMaker to disentangle bitmap case from base class and give GPU object a say in what…

src/core/SkImageCacherator.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmap.h"
 #include "SkBitmapCache.h"
 #include "SkImage_Base.h"
@@ skipping 186 matching lines @@
     bool onGetYUVSizes(SkISize sizes[3]) override {
         return fGen->getYUV8Planes(sizes, nullptr, nullptr, nullptr);
     }
     bool onGetYUVPlanes(SkISize sizes[3], void* planes[3], size_t rowBytes[3],
                         SkYUVColorSpace* space) override {
         return fGen->getYUV8Planes(sizes, planes, rowBytes, space);
     }
 };
 
 static GrTexture* set_key_and_return(GrTexture* tex, const GrUniqueKey& key) {
-    tex->resourcePriv().setUniqueKey(key);
+    if (key.isValid()) {
+        tex->resourcePriv().setUniqueKey(key);
+    }
     return tex;
 }
 
 /*
  *  We have a 5 ways to try to return a texture (in sorted order)
  *
  *  1. Check the cache for a pre-existing one
  *  2. Ask the generator to natively create one
  *  3. Ask the generator to return a compressed form that the GPU might support
  *  4. Ask the generator to return YUV planes, which the GPU can convert
  *  5. Ask the generator to return RGB(A) data, which the GPU can convert
  */
-GrTexture* SkImageCacherator::lockUnstretchedTexture(GrContext* ctx, const SkImage* client) {
-    // textures (at least the texture-key) only support 16bit dimensions, so abort early
-    // if we're too big.
-    if (fInfo.width() > 0xFFFF || fInfo.height() > 0xFFFF) {
-        return nullptr;
+GrTexture* SkImageCacherator::lockTexture(GrContext* ctx, const GrUniqueKey& key,
+                                          const SkImage* client) {
+    // 1. Check the cache for a pre-existing one
+    if (key.isValid()) {
+        if (GrTexture* tex = ctx->textureProvider()->findAndRefTextureByUniqueKey(key)) {
+            return tex;
+        }
     }
 
-    GrUniqueKey key;
-    const GrTextureParams& noStretchParams = GrTextureParams::ClampNoFilter();
-    GrMakeKeyFromImageID(&key, fUniqueID, SkIRect::MakeWH(fInfo.width(), fInfo.height()),
-                         *ctx->caps(), noStretchParams);
-
-    // 1. Check the cache for a pre-existing one
-    if (GrTexture* tex = ctx->textureProvider()->findAndRefTextureByUniqueKey(key)) {
-        return tex;
-    }
-
-    // 2. Ask the genreator to natively create one
+    // 2. Ask the generator to natively create one
     {
         ScopedGenerator generator(this);
         SkIRect subset = SkIRect::MakeXYWH(fOrigin.x(), fOrigin.y(), fInfo.width(), fInfo.height());
         if (GrTexture* tex = generator->generateTexture(ctx, &subset)) {
             return set_key_and_return(tex, key);
         }
     }
 
     const GrSurfaceDesc desc = GrImageInfoToSurfaceDesc(fInfo);
 
@@ skipping 12 matching lines @@
         Generator_GrYUVProvider provider(generator);
         GrTexture* tex = provider.refAsTexture(ctx, desc, true);
         if (tex) {
             return set_key_and_return(tex, key);
         }
     }
 
     // 5. Ask the generator to return RGB(A) data, which the GPU can convert
     SkBitmap bitmap;
     if (this->tryLockAsBitmap(&bitmap, client)) {
-        return GrRefCachedBitmapTexture(ctx, bitmap, noStretchParams);
+        GrTexture* tex = GrUploadBitmapToTexture(ctx, bitmap);
+        if (tex) {
+            return set_key_and_return(tex, key);
+        }
     }
     return nullptr;
 }
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
-#include "GrTextureMaker.h"
+#include "GrTextureParamsAdjuster.h"
 
-class Cacherator_GrTextureMaker : public GrTextureMaker {
+class Cacherator_GrTextureParamsAdjuster : public GrTextureParamsAdjuster {
 public:
-    Cacherator_GrTextureMaker(SkImageCacherator* cacher, const SkImage* client,
-                              const GrUniqueKey& unstretchedKey)
+    Cacherator_GrTextureParamsAdjuster(SkImageCacherator* cacher, const SkImage* client)
         : INHERITED(cacher->info().width(), cacher->info().height())
         , fCacher(cacher)
         , fClient(client)
-        , fUnstretchedKey(unstretchedKey)
-    {}
+    {
+        if (client) {
+            GrMakeKeyFromImageID(&fOriginalKey, client->uniqueID(),
+                                 SkIRect::MakeWH(this->width(), this->height()));
+        }
+    }
 
 protected:
+    GrTexture* peekOriginalTexture() override { return nullptr; }
+
     // TODO: consider overriding this, for the case where the underlying generator might be
     //       able to efficiently produce a "stretched" texture natively (e.g. picture-backed)
-//    GrTexture* onGenerateStretchedTexture(GrContext*, const SkGrStretch&) override;
+    //    GrTexture* generateTextureForParams(GrContext*, const SkGrStretch&) override;
 
-    GrTexture* onRefUnstretchedTexture(GrContext* ctx) override {
-        return fCacher->lockUnstretchedTexture(ctx, fClient);
+    GrTexture* refOriginalTexture(GrContext* ctx) override {
+        return fCacher->lockTexture(ctx, fOriginalKey, fClient);
     }
 
-    bool onMakeStretchedKey(const SkGrStretch& stretch, GrUniqueKey* stretchedKey) override {
-        return GrMakeStretchedKey(fUnstretchedKey, stretch, stretchedKey);
+    void makeCopyKey(const CopyParams& stretch, GrUniqueKey* paramsCopyKey) override {
+        if (fOriginalKey.isValid()) {
+            MakeCopyKeyFromOrigKey(fOriginalKey, stretch, paramsCopyKey);
+        }
     }
 
-    void onNotifyStretchCached(const GrUniqueKey& stretchedKey) override {
+    void didCacheCopy(const GrUniqueKey& copyKey) override {
         if (fClient) {
             as_IB(fClient)->notifyAddedToCache();
         }
     }
 
-    bool onGetROBitmap(SkBitmap* bitmap) override {
+    bool getROBitmap(SkBitmap* bitmap) override {
         return fCacher->lockAsBitmap(bitmap, fClient);
     }
 
 private:
     SkImageCacherator*      fCacher;
     const SkImage*          fClient;
-    const GrUniqueKey       fUnstretchedKey;
+    GrUniqueKey             fOriginalKey;
 
-    typedef GrTextureMaker INHERITED;
+    typedef GrTextureParamsAdjuster INHERITED;
 };
 
 GrTexture* SkImageCacherator::lockAsTexture(GrContext* ctx, const GrTextureParams& params,
                                             const SkImage* client) {
     if (!ctx) {
         return nullptr;
     }
 
-    GrUniqueKey key;
-    GrMakeKeyFromImageID(&key, this->uniqueID(),
-                         SkIRect::MakeWH(this->info().width(), this->info().height()),
-                         *ctx->caps(), GrTextureParams::ClampNoFilter());
-
-    return Cacherator_GrTextureMaker(this, client, key).refCachedTexture(ctx, params);
+    return Cacherator_GrTextureParamsAdjuster(this, client).refTextureForParams(ctx, params);
 }
 
 #else
 
 GrTexture* SkImageCacherator::lockAsTexture(GrContext* ctx, const GrTextureParams&,
                                             const SkImage* client) {
     return nullptr;
 }
 
 #endif