121 lines
4.0 KiB
C++
121 lines
4.0 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef TNT_FILAMENT_BACKEND_OPENGL_OPENGL_PLATFORM_EGL_H
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#define TNT_FILAMENT_BACKEND_OPENGL_OPENGL_PLATFORM_EGL_H
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#include <stdint.h>
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#include <backend/platforms/OpenGLPlatform.h>
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#include <backend/DriverEnums.h>
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namespace filament::backend {
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/**
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* A concrete implementation of OpenGLPlatform that supports EGL.
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*/
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class PlatformEGL : public OpenGLPlatform {
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public:
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PlatformEGL() noexcept;
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protected:
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// --------------------------------------------------------------------------------------------
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// Platform Interface
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/**
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* Initializes EGL, creates the OpenGL context and returns a concrete Driver implementation
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* that supports OpenGL/OpenGL ES.
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*/
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Driver* createDriver(void* sharedContext,
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const Platform::DriverConfig& driverConfig) noexcept override;
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/**
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* This returns zero. This method can be overridden to return something more useful.
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* @return zero
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*/
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int getOSVersion() const noexcept override;
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// --------------------------------------------------------------------------------------------
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// OpenGLPlatform Interface
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void terminate() noexcept override;
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bool isSRGBSwapChainSupported() const noexcept override;
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SwapChain* createSwapChain(void* nativewindow, uint64_t flags) noexcept override;
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SwapChain* createSwapChain(uint32_t width, uint32_t height, uint64_t flags) noexcept override;
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void destroySwapChain(SwapChain* swapChain) noexcept override;
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void makeCurrent(SwapChain* drawSwapChain, SwapChain* readSwapChain) noexcept override;
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void commit(SwapChain* swapChain) noexcept override;
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bool canCreateFence() noexcept override;
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Fence* createFence() noexcept override;
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void destroyFence(Fence* fence) noexcept override;
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FenceStatus waitFence(Fence* fence, uint64_t timeout) noexcept override;
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OpenGLPlatform::ExternalTexture* createExternalImageTexture() noexcept override;
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void destroyExternalImage(ExternalTexture* texture) noexcept override;
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bool setExternalImage(void* externalImage, ExternalTexture* texture) noexcept override;
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/**
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* Logs glGetError() to slog.e
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* @param name a string giving some context on the error. Typically __func__.
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*/
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static void logEglError(const char* name) noexcept;
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/**
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* Calls glGetError() to clear the current error flags. logs a warning to log.w if
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* an error was pending.
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*/
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static void clearGlError() noexcept;
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/**
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* Always use this instead of eglMakeCurrent().
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*/
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EGLBoolean makeCurrent(EGLSurface drawSurface, EGLSurface readSurface) noexcept;
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// TODO: this should probably use getters instead.
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EGLDisplay mEGLDisplay = EGL_NO_DISPLAY;
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EGLContext mEGLContext = EGL_NO_CONTEXT;
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EGLSurface mCurrentDrawSurface = EGL_NO_SURFACE;
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EGLSurface mCurrentReadSurface = EGL_NO_SURFACE;
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EGLSurface mEGLDummySurface = EGL_NO_SURFACE;
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EGLConfig mEGLConfig = EGL_NO_CONFIG_KHR;
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// supported extensions detected at runtime
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struct {
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struct {
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bool OES_EGL_image_external_essl3 = false;
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} gl;
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struct {
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bool KHR_no_config_context = false;
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bool KHR_gl_colorspace = false;
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} egl;
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} ext;
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private:
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void initializeGlExtensions() noexcept;
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EGLConfig findSwapChainConfig(uint64_t flags) const;
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};
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} // namespace filament::backend
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#endif // TNT_FILAMENT_BACKEND_OPENGL_OPENGL_PLATFORM_EGL_H
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