1 /* 2 * Copyright (c) 2024 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 SwapchainGLES; 29 struct DeviceCreateInfo; 30 struct DevicePlatformData; 31 32 namespace GlesImplementation { 33 struct SurfaceInfo; 34 } // namespace GlesImplementation 35 36 namespace EGLHelpers { 37 class EGLState { 38 public: 39 EGLState() = default; 40 ~EGLState() = default; 41 bool CreateContext(DeviceCreateInfo const& createInfo); 42 bool IsValid() const; 43 44 void GlInitialize(); 45 void DestroyContext(); 46 void SetSwapInterval(uint32_t interval); 47 const DevicePlatformData& GetPlatformData() const; 48 49 void SaveContext(); 50 void SetContext(const SwapchainGLES* swapchain); 51 void RestoreContext(); 52 void* ErrorFilter() const; 53 54 uint32_t MajorVersion() const; 55 uint32_t MinorVersion() const; 56 57 bool HasExtension(BASE_NS::string_view) const; 58 uintptr_t CreateSurface(uintptr_t window, uintptr_t instance, bool isSrgb) const noexcept; 59 void DestroySurface(uintptr_t surface) const noexcept; 60 bool GetSurfaceInformation( 61 const DevicePlatformDataGLES& plat, EGLSurface surface, GlesImplementation::SurfaceInfo& res) const; 62 void SwapBuffers(const SwapchainGLES& swapchain); 63 64 protected: 65 bool VerifyVersion(); 66 bool hasColorSpaceExt_ { false }; 67 bool hasConfiglessExt_ { false }; 68 bool hasSurfacelessExt_ { false }; 69 void HandleExtensions(); 70 void FillSurfaceInfo(EGLDisplay display, EGLSurface surface, EGLint configId, EGLConfig config, 71 GlesImplementation::SurfaceInfo& res) const; 72 BASE_NS::string cextensions_; // list of client extensions (null terminated strings) 73 BASE_NS::vector<BASE_NS::string_view> cextensionList_; // pointers to cextensions_ 74 BASE_NS::string dextensions_; // list of display extensions (null terminated strings) 75 BASE_NS::vector<BASE_NS::string_view> dextensionList_; // pointers to dextensions_ 76 77 DevicePlatformDataGLES plat_; 78 struct ContextState { 79 EGLContext context = EGL_NO_CONTEXT; 80 EGLDisplay display = EGL_NO_DISPLAY; 81 EGLSurface readSurface = EGL_NO_SURFACE; 82 EGLSurface drawSurface = EGL_NO_SURFACE; 83 }; 84 ContextState oldContext_; 85 86 EGLSurface dummySurface_ = EGL_NO_SURFACE; 87 ContextState dummyContext_; 88 bool vSync_ = true; 89 bool oldIsSet_ = false; 90 91 void GetContext(ContextState& oldState); 92 void SetContext(const ContextState& newState, bool force = false); 93 void ChooseConfiguration(const BackendExtraGLES*); 94 void CreateContext(const BackendExtraGLES*); 95 bool IsVersionGreaterOrEqual(uint32_t major, uint32_t minor) const; 96 }; 97 } // namespace EGLHelpers 98 RENDER_END_NAMESPACE() 99 #endif 100 #endif // GLES_EGL_STATE_H 101