forked from Mirrorlandia_minetest/irrlicht
074e81f78f
GLX/EGL are supposed to abstract exactly this away, this is a bad hack at best and might totally break stuff at worst.
119 lines
3.3 KiB
C++
Executable File
119 lines
3.3 KiB
C++
Executable File
// Copyright (C) 2013 Patryk Nadrowski
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in Irrlicht.h
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#ifndef __C_EGL_MANAGER_H_INCLUDED__
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#define __C_EGL_MANAGER_H_INCLUDED__
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#include "IrrCompileConfig.h"
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#ifdef _IRR_COMPILE_WITH_EGL_MANAGER_
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#include <EGL/egl.h>
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#include "SIrrCreationParameters.h"
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#include "SExposedVideoData.h"
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#include "IContextManager.h"
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namespace irr
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{
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namespace video
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{
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// EGL manager.
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class CEGLManager : public IContextManager
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{
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public:
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//! Constructor.
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CEGLManager();
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//! Destructor.
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virtual ~CEGLManager();
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// Initialize EGL.
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/* This method initialize EGLand create EGL display, anyway surface and context
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aren't create. */
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virtual bool initialize(const SIrrlichtCreationParameters& params, const SExposedVideoData& data) _IRR_OVERRIDE_;
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// Terminate EGL.
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/* Terminate EGL context. This method break both existed surface and context. */
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virtual void terminate() _IRR_OVERRIDE_;
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// Create EGL surface.
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/* This method create EGL surface. On some platforms eg. Android, we must
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recreate surface on each resume, because WindowID may change, so existed
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surface may not be valid. If EGL context already exist, this method
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automatically activates it. */
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virtual bool generateSurface() _IRR_OVERRIDE_;
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// Destroy EGL surface.
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/* This method destroy EGL. On some platforms eg. Android, we should call
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this method on each pause, because after resume this surface may not be valid.
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Hovewer this method doesn'r break EGL context. */
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virtual void destroySurface() _IRR_OVERRIDE_;
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// Create EGL context.
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/* This method create and activate EGL context. */
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virtual bool generateContext() _IRR_OVERRIDE_;
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// Destroy EGL context.
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/* This method destroy EGL context. */
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virtual void destroyContext() _IRR_OVERRIDE_;
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virtual const SExposedVideoData& getContext() const _IRR_OVERRIDE_;
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virtual bool activateContext(const SExposedVideoData& videoData, bool restorePrimaryOnZero) _IRR_OVERRIDE_;
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// Get procedure address.
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virtual void* getProcAddress(const std::string &procName) _IRR_OVERRIDE_;
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// Swap buffers.
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virtual bool swapBuffers() _IRR_OVERRIDE_;
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protected:
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enum EConfigStyle
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{
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//! Get first result of eglChooseConfigs and if that fails try again by requesting simpler attributes
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ECS_EGL_CHOOSE_FIRST_LOWER_EXPECTATIONS,
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//! We select our own best fit and avoid using eglChooseConfigs
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ECS_IRR_CHOOSE,
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};
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EGLConfig chooseConfig(EConfigStyle confStyle);
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//! Check how close this config is to the parameters we requested
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//! returns 0 is perfect, larger values are worse and < 0 is unusable.
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irr::s32 rateConfig(EGLConfig config, EGLint eglOpenGLBIT, bool log=false);
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// Helper to sort EGLConfig's. (because we got no std::pair....)
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struct SConfigRating
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{
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EGLConfig config;
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irr::s32 rating;
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bool operator<(const SConfigRating& other) const
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{
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return rating < other.rating;
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}
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};
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private:
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bool testEGLError();
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NativeWindowType EglWindow;
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EGLDisplay EglDisplay;
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EGLSurface EglSurface;
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EGLContext EglContext;
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EGLConfig EglConfig;
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SIrrlichtCreationParameters Params;
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SExposedVideoData Data;
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EGLint MajorVersion;
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EGLint MinorVersion;
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};
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}
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}
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#endif
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#endif
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