1 /* 2 * Copyright 2020 The Android Open Source Project 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 SF_SKIARENDERENGINE_H_ 18 #define SF_SKIARENDERENGINE_H_ 19 20 #include <renderengine/RenderEngine.h> 21 #include <sys/types.h> 22 23 #include <GrBackendSemaphore.h> 24 #include <SkSurface.h> 25 #include <android-base/thread_annotations.h> 26 #include <renderengine/ExternalTexture.h> 27 #include <renderengine/RenderEngine.h> 28 #include <sys/types.h> 29 30 #include <memory> 31 #include <mutex> 32 #include <unordered_map> 33 34 #include "AutoBackendTexture.h" 35 #include "GrContextOptions.h" 36 #include "SkImageInfo.h" 37 #include "android-base/macros.h" 38 #include "compat/SkiaGpuContext.h" 39 #include "debug/SkiaCapture.h" 40 #include "filters/BlurFilter.h" 41 #include "filters/LinearEffect.h" 42 #include "filters/StretchShaderFactory.h" 43 44 class SkData; 45 46 struct SkPoint3; 47 48 namespace android { 49 50 namespace renderengine { 51 52 class Mesh; 53 class Texture; 54 55 namespace skia { 56 57 class BlurFilter; 58 59 class SkiaRenderEngine : public RenderEngine { 60 public: 61 static std::unique_ptr<SkiaRenderEngine> create(const RenderEngineCreationArgs& args); 62 SkiaRenderEngine(Threaded, PixelFormat pixelFormat, BlurAlgorithm); 63 ~SkiaRenderEngine() override; 64 65 std::future<void> primeCache(PrimeCacheConfig config) override final; 66 void cleanupPostRender() override final; supportsBackgroundBlur()67 bool supportsBackgroundBlur() override final { 68 return mBlurFilter != nullptr; 69 } 70 void onActiveDisplaySizeChanged(ui::Size size) override final; 71 int reportShadersCompiled(); 72 73 virtual void setEnableTracing(bool tracingEnabled) override final; 74 75 void useProtectedContext(bool useProtectedContext) override; supportsProtectedContent()76 bool supportsProtectedContent() const override { 77 return supportsProtectedContentImpl(); 78 } 79 void ensureContextsCreated(); 80 81 protected: 82 // This is so backends can stop the generic rendering state first before cleaning up 83 // backend-specific state. SkiaGpuContexts are invalid after invocation. 84 void finishRenderingAndAbandonContexts(); 85 86 // Functions that a given backend (GLES, Vulkan) must implement 87 using Contexts = std::pair<unique_ptr<SkiaGpuContext>, unique_ptr<SkiaGpuContext>>; 88 virtual Contexts createContexts() = 0; 89 virtual bool supportsProtectedContentImpl() const = 0; 90 virtual bool useProtectedContextImpl(GrProtected isProtected) = 0; 91 virtual void waitFence(SkiaGpuContext* context, base::borrowed_fd fenceFd) = 0; 92 virtual base::unique_fd flushAndSubmit(SkiaGpuContext* context, 93 sk_sp<SkSurface> dstSurface) = 0; 94 virtual void appendBackendSpecificInfoToDump(std::string& result) = 0; 95 96 size_t getMaxTextureSize() const override final; 97 size_t getMaxViewportDims() const override final; 98 // TODO: b/293371537 - Return reference instead of pointer? (Cleanup) 99 SkiaGpuContext* getActiveContext(); 100 isProtected()101 bool isProtected() const { return mInProtectedContext; } 102 103 // Implements PersistentCache as a way to monitor what SkSL shaders Skia has 104 // cached. 105 class SkSLCacheMonitor : public GrContextOptions::PersistentCache { 106 public: 107 SkSLCacheMonitor() = default; 108 ~SkSLCacheMonitor() override = default; 109 110 sk_sp<SkData> load(const SkData& key) override; 111 112 void store(const SkData& key, const SkData& data, const SkString& description) override; 113 shadersCachedSinceLastCall()114 int shadersCachedSinceLastCall() { 115 const int shadersCachedSinceLastCall = mShadersCachedSinceLastCall; 116 mShadersCachedSinceLastCall = 0; 117 return shadersCachedSinceLastCall; 118 } 119 totalShadersCompiled()120 int totalShadersCompiled() const { return mTotalShadersCompiled; } 121 122 private: 123 int mShadersCachedSinceLastCall = 0; 124 int mTotalShadersCompiled = 0; 125 }; 126 127 SkSLCacheMonitor mSkSLCacheMonitor; 128 129 private: 130 void mapExternalTextureBuffer(const sp<GraphicBuffer>& buffer, 131 bool isRenderable) override final; 132 void unmapExternalTextureBuffer(sp<GraphicBuffer>&& buffer) override final; 133 bool canSkipPostRenderCleanup() const override final; 134 135 std::shared_ptr<AutoBackendTexture::LocalRef> getOrCreateBackendTexture( 136 const sp<GraphicBuffer>& buffer, bool isOutputBuffer) REQUIRES(mRenderingMutex); 137 void initCanvas(SkCanvas* canvas, const DisplaySettings& display); 138 void drawShadow(SkCanvas* canvas, const SkRRect& casterRRect, 139 const ShadowSettings& shadowSettings); 140 void drawLayersInternal(const std::shared_ptr<std::promise<FenceResult>>&& resultPromise, 141 const DisplaySettings& display, 142 const std::vector<LayerSettings>& layers, 143 const std::shared_ptr<ExternalTexture>& buffer, 144 base::unique_fd&& bufferFence) override final; 145 146 void dump(std::string& result) override final; 147 148 // If requiresLinearEffect is true or the layer has a stretchEffect a new shader is returned. 149 // Otherwise it returns the input shader. 150 struct RuntimeEffectShaderParameters { 151 sk_sp<SkShader> shader; 152 const LayerSettings& layer; 153 const DisplaySettings& display; 154 bool undoPremultipliedAlpha; 155 bool requiresLinearEffect; 156 float layerDimmingRatio; 157 const ui::Dataspace outputDataSpace; 158 const ui::Dataspace fakeOutputDataspace; 159 }; 160 sk_sp<SkShader> createRuntimeEffectShader(const RuntimeEffectShaderParameters&); 161 162 const PixelFormat mDefaultPixelFormat; 163 164 // Identifier used for various mappings of layers to various 165 // textures or shaders 166 using GraphicBufferId = uint64_t; 167 168 // Number of external holders of ExternalTexture references, per GraphicBuffer ID. 169 std::unordered_map<GraphicBufferId, int32_t> mGraphicBufferExternalRefs 170 GUARDED_BY(mRenderingMutex); 171 std::unordered_map<GraphicBufferId, std::shared_ptr<AutoBackendTexture::LocalRef>> mTextureCache 172 GUARDED_BY(mRenderingMutex); 173 std::unordered_map<shaders::LinearEffect, sk_sp<SkRuntimeEffect>, shaders::LinearEffectHasher> 174 mRuntimeEffects; 175 AutoBackendTexture::CleanupManager mTextureCleanupMgr GUARDED_BY(mRenderingMutex); 176 177 StretchShaderFactory mStretchShaderFactory; 178 179 sp<Fence> mLastDrawFence; 180 BlurFilter* mBlurFilter = nullptr; 181 182 // Object to capture commands send to Skia. 183 std::unique_ptr<SkiaCapture> mCapture; 184 185 // Mutex guarding rendering operations, so that internal state related to 186 // rendering that is potentially modified by multiple threads is guaranteed thread-safe. 187 mutable std::mutex mRenderingMutex; 188 189 // Graphics context used for creating surfaces and submitting commands 190 unique_ptr<SkiaGpuContext> mContext; 191 // Same as above, but for protected content (eg. DRM) 192 unique_ptr<SkiaGpuContext> mProtectedContext; 193 bool mInProtectedContext = false; 194 }; 195 196 } // namespace skia 197 } // namespace renderengine 198 } // namespace android 199 200 #endif /* SF_GLESRENDERENGINE_H_ */ 201