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FORK: Simple Directmedia Layer
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SDL_waylandopengles.c (3501B)

      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_WAYLAND && SDL_VIDEO_OPENGL_EGL
     24 
     25 #include "../SDL_sysvideo.h"
     26 #include "../../events/SDL_windowevents_c.h"
     27 #include "SDL_waylandvideo.h"
     28 #include "SDL_waylandopengles.h"
     29 #include "SDL_waylandwindow.h"
     30 #include "SDL_waylandevents_c.h"
     31 #include "SDL_waylanddyn.h"
     32 
     33 #include "xdg-shell-client-protocol.h"
     34 #include "xdg-shell-unstable-v6-client-protocol.h"
     35 
     36 /* EGL implementation of SDL OpenGL ES support */
     37 
     38 int
     39 Wayland_GLES_LoadLibrary(_THIS, const char *path) {
     40     int ret;
     41     SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
     42     
     43     ret = SDL_EGL_LoadLibrary(_this, path, (NativeDisplayType) data->display, 0);
     44 
     45     Wayland_PumpEvents(_this);
     46     WAYLAND_wl_display_flush(data->display);
     47     
     48     return ret;
     49 }
     50 
     51 
     52 SDL_GLContext
     53 Wayland_GLES_CreateContext(_THIS, SDL_Window * window)
     54 {
     55     SDL_GLContext context;
     56     context = SDL_EGL_CreateContext(_this, ((SDL_WindowData *) window->driverdata)->egl_surface);
     57     WAYLAND_wl_display_flush( ((SDL_VideoData*)_this->driverdata)->display );
     58     
     59     return context;
     60 }
     61 
     62 int
     63 Wayland_GLES_SwapWindow(_THIS, SDL_Window *window)
     64 {
     65     SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
     66 
     67     if (SDL_EGL_SwapBuffers(_this, data->egl_surface) < 0) {
     68         return -1;
     69     }
     70 
     71     // Wayland-EGL forbids drawing calls in-between SwapBuffers and wl_egl_window_resize
     72     Wayland_HandlePendingResize(window);
     73 
     74     WAYLAND_wl_display_flush( data->waylandData->display );
     75 
     76     return 0;
     77 }
     78 
     79 int
     80 Wayland_GLES_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context)
     81 {
     82     int ret;
     83     
     84     if (window && context) {
     85         ret = SDL_EGL_MakeCurrent(_this, ((SDL_WindowData *) window->driverdata)->egl_surface, context);
     86     }
     87     else {
     88         ret = SDL_EGL_MakeCurrent(_this, NULL, NULL);
     89     }
     90     
     91     WAYLAND_wl_display_flush( ((SDL_VideoData*)_this->driverdata)->display );
     92     
     93     return ret;
     94 }
     95 
     96 void
     97 Wayland_GLES_GetDrawableSize(_THIS, SDL_Window * window, int * w, int * h)
     98 {
     99     SDL_WindowData *data;
    100     if (window->driverdata) {
    101         data = (SDL_WindowData *) window->driverdata;
    102 
    103         if (w) {
    104             *w = window->w * data->scale_factor;
    105         }
    106 
    107         if (h) {
    108             *h = window->h * data->scale_factor;
    109         }
    110     }
    111 }
    112 
    113 void 
    114 Wayland_GLES_DeleteContext(_THIS, SDL_GLContext context)
    115 {
    116     SDL_EGL_DeleteContext(_this, context);
    117     WAYLAND_wl_display_flush( ((SDL_VideoData*)_this->driverdata)->display );
    118 }
    119 
    120 #endif /* SDL_VIDEO_DRIVER_WAYLAND && SDL_VIDEO_OPENGL_EGL */
    121 
    122 /* vi: set ts=4 sw=4 expandtab: */