/*

Simple DirectMedia Layer

Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>

This software is provided 'as-is', without any express or implied

warranty. In no event will the authors be held liable for any damages

arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,

including commercial applications, and to alter it and redistribute it

freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not

claim that you wrote the original software. If you use this software

in a product, an acknowledgment in the product documentation would be

appreciated but is not required.

2. Altered source versions must be plainly marked as such, and must not be

misrepresented as being the original software.

3. This notice may not be removed or altered from any source distribution.

*/

#include "SDL_config.h"

#if SDL_VIDEO_DRIVER_X11 && SDL_VIDEO_OPENGL_EGL

#include "SDL_x11video.h"

#include "SDL_x11opengles.h"

#include "SDL_x11opengl.h"

/* EGL implementation of SDL OpenGL support */

int

X11_GLES_LoadLibrary(_THIS, const char *path) {

SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;

/* If the profile requested is not GL ES, switch over to X11_GL functions */

if (_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES) {

#if SDL_VIDEO_OPENGL_GLX

_this->GL_LoadLibrary = X11_GL_LoadLibrary;

_this->GL_GetProcAddress = X11_GL_GetProcAddress;

_this->GL_UnloadLibrary = X11_GL_UnloadLibrary;

_this->GL_CreateContext = X11_GL_CreateContext;

_this->GL_MakeCurrent = X11_GL_MakeCurrent;

_this->GL_SetSwapInterval = X11_GL_SetSwapInterval;

_this->GL_GetSwapInterval = X11_GL_GetSwapInterval;

_this->GL_SwapWindow = X11_GL_SwapWindow;

_this->GL_DeleteContext = X11_GL_DeleteContext;

return X11_GL_LoadLibrary(_this, path);

#else

return SDL_SetError("SDL not configured with OpenGL/GLX support");

#endif

}

return SDL_EGL_LoadLibrary(_this, path, (NativeDisplayType) data->display);

}

XVisualInfo *

X11_GLES_GetVisual(_THIS, Display * display, int screen)

{

XVisualInfo *egl_visualinfo = NULL;

EGLint visual_id;

XVisualInfo vi_in;

int out_count;

if (!_this->egl_data) {

/* The EGL library wasn't loaded, SDL_GetError() should have info */

return NULL;

}

if (_this->egl_data->eglGetConfigAttrib(_this->egl_data->egl_display,

_this->egl_data->egl_config,

EGL_NATIVE_VISUAL_ID,

&visual_id) == EGL_FALSE || !visual_id) {

/* Use the default visual when all else fails */

vi_in.screen = screen;

egl_visualinfo = X11_XGetVisualInfo(display,

VisualScreenMask,

&vi_in, &out_count);

} else {

vi_in.screen = screen;

vi_in.visualid = visual_id;

egl_visualinfo = X11_XGetVisualInfo(display, VisualScreenMask | VisualIDMask, &vi_in, &out_count);

}

return egl_visualinfo;

}

SDL_GLContext

X11_GLES_CreateContext(_THIS, SDL_Window * window)

{

SDL_GLContext context;

SDL_WindowData *data = (SDL_WindowData *) window->driverdata;

Display *display = data->videodata->display;

X11_XSync(display, False);

context = SDL_EGL_CreateContext(_this, data->egl_surface);

X11_XSync(display, False);

return context;

}

void

X11_GLES_DeleteContext(_THIS, SDL_GLContext context)

{

/* FIXME: This "crappy fix" comes from the previous GLES X11 code,

* it's required so you can create a GLX context, destroy it and create a EGL one

* To be able to fix this, we need to add a function SDL_GL_ResetContext and

* disallow SDL_GL_MakeCurrent from taking a NULL pointer, thus ensuring we can

* determine if it is a GLX or EGL context

*/

SDL_EGL_DeleteContext(_this, context);

X11_GLES_UnloadLibrary(_this);

}

SDL_EGL_SwapWindow_impl(X11)

SDL_EGL_MakeCurrent_impl(X11)

#endif /* SDL_VIDEO_DRIVER_X11 && SDL_VIDEO_OPENGL_EGL */

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