1 /* 2 * Copyright (C) 2023 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef GLES_EGL_STATE_H 17 #define GLES_EGL_STATE_H 18 19 #if RENDER_HAS_GLES_BACKEND 20 #include <cstdint> 21 22 #include <base/containers/string.h> 23 #include <base/containers/string_view.h> 24 #include <render/gles/intf_device_gles.h> 25 #include <render/namespace.h> 26 27 RENDER_BEGIN_NAMESPACE() 28 class Swapchain; 29 struct DeviceCreateInfo; 30 struct DevicePlatformData; 31 32 namespace GlesImplementation { 33 struct SurfaceInfo; 34 } // namespace GlesImplementation 35 36 namespace EGLHelpers { 37 void DumpEGLSurface(EGLDisplay dpy, EGLSurface surf); 38 void DumpEGLConfig(EGLDisplay dpy, const EGLConfig& config); 39 40 class EGLState { 41 public: 42 EGLState() = default; 43 ~EGLState() = default; 44 bool CreateContext(DeviceCreateInfo const& createInfo); 45 bool IsValid(); 46 47 void GlInitialize(); 48 void DestroyContext(); 49 void SetSwapInterval(uint32_t interval); 50 const DevicePlatformData& GetPlatformData() const; 51 52 void SaveContext(); 53 void SetContext(Swapchain* swapChain); 54 void RestoreContext(); 55 void* ErrorFilter() const; 56 57 uint32_t MajorVersion() const; 58 uint32_t MinorVersion() const; 59 60 bool HasExtension(BASE_NS::string_view) const; 61 bool GetSurfaceInformation( 62 const DevicePlatformDataGLES& plat, EGLSurface surface, GlesImplementation::SurfaceInfo& res) const; 63 64 protected: 65 bool VerifyVersion(); 66 bool hasColorSpaceExt_ { false }; 67 bool hasConfiglessExt_ { false }; 68 bool hasSurfacelessExt_ { false }; 69 void HandleExtensions(); 70 BASE_NS::string cextensions_; // list of client extensions (null terminated strings) 71 BASE_NS::vector<BASE_NS::string_view> cextensionList_; // pointers to cextensions_ 72 BASE_NS::string dextensions_; // list of display extensions (null terminated strings) 73 BASE_NS::vector<BASE_NS::string_view> dextensionList_; // pointers to dextensions_ 74 75 DevicePlatformDataGLES plat_; 76 struct ContextState { 77 EGLContext context = EGL_NO_CONTEXT; 78 EGLDisplay display = EGL_NO_DISPLAY; 79 EGLSurface readSurface = EGL_NO_SURFACE; 80 EGLSurface drawSurface = EGL_NO_SURFACE; 81 }; 82 ContextState oldContext_; 83 84 EGLSurface dummySurface_ = EGL_NO_SURFACE; 85 ContextState dummyContext_; 86 bool vSync_ = false; 87 bool oldIsSet_ = false; 88 89 void GetContext(ContextState& oldState); 90 void SetContext(const ContextState& newState, bool force = false); 91 void ChooseConfiguration(const BackendExtraGLES*); 92 void CreateContext(const BackendExtraGLES*); 93 bool IsVersionGreaterOrEqual(uint32_t major, uint32_t minor) const; 94 }; 95 } // namespace EGLHelpers 96 RENDER_END_NAMESPACE() 97 #endif 98 #endif // GLES_EGL_STATE_H 99