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/* Copyright 2015-2018 Egor Yusov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF ANY PROPRIETARY RIGHTS.
*
* In no event and under no legal theory, whether in tort (including negligence),
* contract, or otherwise, unless required by applicable law (such as deliberate
* and grossly negligent acts) or agreed to in writing, shall any Contributor be
* liable for any damages, including any direct, indirect, special, incidental,
* or consequential damages of any character arising as a result of this License or
* out of the use or inability to use the software (including but not limited to damages
* for loss of goodwill, work stoppage, computer failure or malfunction, or any and
* all other commercial damages or losses), even if such Contributor has been advised
* of the possibility of such damages.
*/
#pragma once
#include <EGL/egl.h>
#include <android/native_window.h>
namespace Diligent
{
class GLContext
{
public:
using NativeGLContextType = EGLContext;
GLContext(const struct EngineGLCreateInfo& InitAttribs, struct DeviceCaps& DeviceCaps, const struct SwapChainDesc* pSCDesc);
~GLContext();
bool Init(ANativeWindow* window);
void SwapBuffers(int SwapInterval);
void UpdateScreenSize();
bool Invalidate();
void Suspend();
EGLint Resume(ANativeWindow* window);
NativeGLContextType GetCurrentNativeGLContext();
int32_t GetScreenWidth() const { return screen_width_; }
int32_t GetScreenHeight() const { return screen_height_; }
private:
//EGL configurations
ANativeWindow* window_ = nullptr;
EGLDisplay display_ = EGL_NO_DISPLAY;
EGLSurface surface_ = EGL_NO_SURFACE;
EGLContext context_ = EGL_NO_CONTEXT;
EGLConfig config_;
const bool create_debug_context_;
EGLint egl_major_version_ = 0;
EGLint egl_minor_version_ = 0;
//Screen parameters
int32_t color_size_ = 0;
int32_t depth_size_ = 0;
int32_t major_version_ = 0;
int32_t minor_version_ = 0;
int32_t screen_width_ = 0;
int32_t screen_height_ = 0;
EGLint min_swap_interval_ = 0;
EGLint max_swap_interval_ = 1;
//Flags
bool gles_initialized_ = false;
bool egl_context_initialized_ = false;
bool context_valid_ = false;
void InitGLES();
void Terminate();
bool InitEGLSurface();
bool InitEGLContext();
void AttachToCurrentEGLContext();
void FillDeviceCaps(DeviceCaps& DeviceCaps);
};
} // namespace Diligent
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