sdl

FORK: Simple Directmedia Layer
git clone https://git.neptards.moe/neptards/sdl.git
Log | Files | Refs

SDL_x11opengles.c (3950B)

      1 /*
      2   Simple DirectMedia Layer
      3   Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
      4 
      5   This software is provided 'as-is', without any express or implied
      6   warranty.  In no event will the authors be held liable for any damages
      7   arising from the use of this software.
      8 
      9   Permission is granted to anyone to use this software for any purpose,
     10   including commercial applications, and to alter it and redistribute it
     11   freely, subject to the following restrictions:
     12 
     13   1. The origin of this software must not be misrepresented; you must not
     14      claim that you wrote the original software. If you use this software
     15      in a product, an acknowledgment in the product documentation would be
     16      appreciated but is not required.
     17   2. Altered source versions must be plainly marked as such, and must not be
     18      misrepresented as being the original software.
     19   3. This notice may not be removed or altered from any source distribution.
     20 */
     21 #include "../../SDL_internal.h"
     22 
     23 #if SDL_VIDEO_DRIVER_X11 && SDL_VIDEO_OPENGL_EGL
     24 
     25 #include "SDL_hints.h"
     26 #include "SDL_x11video.h"
     27 #include "SDL_x11opengles.h"
     28 #include "SDL_x11opengl.h"
     29 
     30 /* EGL implementation of SDL OpenGL support */
     31 
     32 int
     33 X11_GLES_LoadLibrary(_THIS, const char *path)
     34 {
     35     SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
     36 
     37     /* If the profile requested is not GL ES, switch over to X11_GL functions  */
     38     if ((_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES) &&
     39         !SDL_GetHintBoolean(SDL_HINT_VIDEO_X11_FORCE_EGL, SDL_FALSE)) {
     40         #if SDL_VIDEO_OPENGL_GLX
     41         X11_GLES_UnloadLibrary(_this);
     42         _this->GL_LoadLibrary = X11_GL_LoadLibrary;
     43         _this->GL_GetProcAddress = X11_GL_GetProcAddress;
     44         _this->GL_UnloadLibrary = X11_GL_UnloadLibrary;
     45         _this->GL_CreateContext = X11_GL_CreateContext;
     46         _this->GL_MakeCurrent = X11_GL_MakeCurrent;
     47         _this->GL_SetSwapInterval = X11_GL_SetSwapInterval;
     48         _this->GL_GetSwapInterval = X11_GL_GetSwapInterval;
     49         _this->GL_SwapWindow = X11_GL_SwapWindow;
     50         _this->GL_DeleteContext = X11_GL_DeleteContext;
     51         return X11_GL_LoadLibrary(_this, path);
     52         #else
     53         return SDL_SetError("SDL not configured with OpenGL/GLX support");
     54         #endif
     55     }
     56     
     57     return SDL_EGL_LoadLibrary(_this, path, (NativeDisplayType) data->display, 0);
     58 }
     59 
     60 XVisualInfo *
     61 X11_GLES_GetVisual(_THIS, Display * display, int screen)
     62 {
     63    
     64     XVisualInfo *egl_visualinfo = NULL;
     65     EGLint visual_id;
     66     XVisualInfo vi_in;
     67     int out_count;
     68 
     69     if (!_this->egl_data) {
     70         /* The EGL library wasn't loaded, SDL_GetError() should have info */
     71         return NULL;
     72     }
     73 
     74     if (_this->egl_data->eglGetConfigAttrib(_this->egl_data->egl_display,
     75                                             _this->egl_data->egl_config,
     76                                             EGL_NATIVE_VISUAL_ID,
     77                                             &visual_id) == EGL_FALSE || !visual_id) {
     78         /* Use the default visual when all else fails */
     79         vi_in.screen = screen;
     80         egl_visualinfo = X11_XGetVisualInfo(display,
     81                                         VisualScreenMask,
     82                                         &vi_in, &out_count);
     83     } else {
     84         vi_in.screen = screen;
     85         vi_in.visualid = visual_id;
     86         egl_visualinfo = X11_XGetVisualInfo(display, VisualScreenMask | VisualIDMask, &vi_in, &out_count);
     87     }
     88 
     89     return egl_visualinfo;
     90 }
     91 
     92 SDL_GLContext
     93 X11_GLES_CreateContext(_THIS, SDL_Window * window)
     94 {
     95     SDL_GLContext context;
     96     SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
     97     Display *display = data->videodata->display;
     98 
     99     X11_XSync(display, False);
    100     context = SDL_EGL_CreateContext(_this, data->egl_surface);
    101     X11_XSync(display, False);
    102 
    103     return context;
    104 }
    105 
    106 SDL_EGL_SwapWindow_impl(X11)
    107 SDL_EGL_MakeCurrent_impl(X11)
    108 
    109 #endif /* SDL_VIDEO_DRIVER_X11 && SDL_VIDEO_OPENGL_EGL */
    110 
    111 /* vi: set ts=4 sw=4 expandtab: */