1 /* 2 Copyright 2010 Google Inc. 3 4 Licensed under the Apache License, Version 2.0 (the "License"); 5 you may not use this file except in compliance with the License. 6 You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10 Unless required by applicable law or agreed to in writing, software 11 distributed under the License is distributed on an "AS IS" BASIS, 12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 See the License for the specific language governing permissions and 14 limitations under the License. 15 */ 16 17 #ifndef SkGpuDeviceFactory_DEFINED 18 #define SkGpuDeviceFactory_DEFINED 19 20 #include "SkDevice.h" 21 22 class GrContext; 23 24 class SK_API SkGpuDeviceFactory : public SkDeviceFactory { 25 public: 26 /** 27 * The constructor will ref() the context, passing it to each device 28 * that it creates. It will be unref()'d in the destructor 29 * Non-layered devices created by the factory will draw to the 30 * rootRenderTarget. rootRenderTarget is ref-counted by the factory. 31 * SkGpuDevice::Current3DApiRenderTarget() can be passed as a special 32 * value that will cause the factory to create a render target object 33 * that reflects the state of the underlying 3D API at the time of 34 * construction. 35 */ 36 SkGpuDeviceFactory(GrContext*, GrRenderTarget* rootRenderTarget); 37 38 /** 39 * When the root layer is both a GrRenderTarget and a GrTexture it 40 * is handy to have the factory hang on to a ref to the GrTexture object. 41 * This is because the GrTexture has a ref to the GrRenderTarget but not 42 * vice-versa. 43 */ 44 SkGpuDeviceFactory(GrContext*, GrTexture* rootRenderTargetTexture); 45 46 virtual ~SkGpuDeviceFactory(); 47 48 virtual SkDevice* newDevice(SkCanvas*, SkBitmap::Config, int width, 49 int height, bool isOpaque, bool isLayer); 50 51 private: 52 GrContext* fContext; 53 GrRenderTarget* fRootRenderTarget; 54 GrTexture* fRootTexture; 55 }; 56 57 #endif 58 59