| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2024 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_internal.h" |
| |
| #if defined(SDL_VIDEO_DRIVER_X11) && defined(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(SDL_VideoDevice *_this, const char *path) |
| { |
| SDL_VideoData *data = _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) && |
| !SDL_GetHintBoolean(SDL_HINT_VIDEO_FORCE_EGL, SDL_FALSE)) { |
| #ifdef SDL_VIDEO_OPENGL_GLX |
| X11_GLES_UnloadLibrary(_this); |
| _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, _this->gl_config.egl_platform); |
| } |
| |
| XVisualInfo *X11_GLES_GetVisual(SDL_VideoDevice *_this, Display *display, int screen, SDL_bool transparent) |
| { |
| |
| 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); |
| |
| /* Return the first transparent Visual */ |
| if (transparent) { |
| int i; |
| for (i = 0; i < out_count; i++) { |
| XVisualInfo *v = &egl_visualinfo[i]; |
| Uint32 format = X11_GetPixelFormatFromVisualInfo(display, v); |
| if (SDL_ISPIXELFORMAT_ALPHA(format)) { /* found! */ |
| /* re-request it to have a copy that can be X11_XFree'ed later */ |
| vi_in.screen = screen; |
| vi_in.visualid = v->visualid; |
| X11_XFree(egl_visualinfo); |
| egl_visualinfo = X11_XGetVisualInfo(display, VisualScreenMask | VisualIDMask, &vi_in, &out_count); |
| return egl_visualinfo; |
| } |
| } |
| } |
| } 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(SDL_VideoDevice *_this, SDL_Window *window) |
| { |
| SDL_GLContext context; |
| SDL_WindowData *data = 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; |
| } |
| |
| SDL_EGLSurface X11_GLES_GetEGLSurface(SDL_VideoDevice *_this, SDL_Window *window) |
| { |
| SDL_WindowData *data = window->driverdata; |
| return data->egl_surface; |
| } |
| |
| SDL_EGL_SwapWindow_impl(X11) |
| SDL_EGL_MakeCurrent_impl(X11) |
| |
| #endif /* SDL_VIDEO_DRIVER_X11 && SDL_VIDEO_OPENGL_EGL */ |