cscg22-gearboy

CSCG 2022 Challenge 'Gearboy'
git clone https://git.sinitax.com/sinitax/cscg22-gearboy
Log | Files | Refs | sfeed.txt

SDL_x11opengles.c (3850B)

      1/*
      2  Simple DirectMedia Layer
      3  Copyright (C) 1997-2014 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_x11video.h"
     26#include "SDL_x11opengles.h"
     27#include "SDL_x11opengl.h"
     28
     29/* EGL implementation of SDL OpenGL support */
     30
     31int
     32X11_GLES_LoadLibrary(_THIS, const char *path)
     33{
     34    SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
     35
     36    /* If the profile requested is not GL ES, switch over to X11_GL functions  */
     37    if (_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES) {
     38        #if SDL_VIDEO_OPENGL_GLX
     39        X11_GLES_UnloadLibrary(_this);
     40        _this->GL_LoadLibrary = X11_GL_LoadLibrary;
     41        _this->GL_GetProcAddress = X11_GL_GetProcAddress;
     42        _this->GL_UnloadLibrary = X11_GL_UnloadLibrary;
     43        _this->GL_CreateContext = X11_GL_CreateContext;
     44        _this->GL_MakeCurrent = X11_GL_MakeCurrent;
     45        _this->GL_SetSwapInterval = X11_GL_SetSwapInterval;
     46        _this->GL_GetSwapInterval = X11_GL_GetSwapInterval;
     47        _this->GL_SwapWindow = X11_GL_SwapWindow;
     48        _this->GL_DeleteContext = X11_GL_DeleteContext;
     49        return X11_GL_LoadLibrary(_this, path);
     50        #else
     51        return SDL_SetError("SDL not configured with OpenGL/GLX support");
     52        #endif
     53    }
     54    
     55    return SDL_EGL_LoadLibrary(_this, path, (NativeDisplayType) data->display);
     56}
     57
     58XVisualInfo *
     59X11_GLES_GetVisual(_THIS, Display * display, int screen)
     60{
     61   
     62    XVisualInfo *egl_visualinfo = NULL;
     63    EGLint visual_id;
     64    XVisualInfo vi_in;
     65    int out_count;
     66
     67    if (!_this->egl_data) {
     68        /* The EGL library wasn't loaded, SDL_GetError() should have info */
     69        return NULL;
     70    }
     71
     72    if (_this->egl_data->eglGetConfigAttrib(_this->egl_data->egl_display,
     73                                            _this->egl_data->egl_config,
     74                                            EGL_NATIVE_VISUAL_ID,
     75                                            &visual_id) == EGL_FALSE || !visual_id) {
     76        /* Use the default visual when all else fails */
     77        vi_in.screen = screen;
     78        egl_visualinfo = X11_XGetVisualInfo(display,
     79                                        VisualScreenMask,
     80                                        &vi_in, &out_count);
     81    } else {
     82        vi_in.screen = screen;
     83        vi_in.visualid = visual_id;
     84        egl_visualinfo = X11_XGetVisualInfo(display, VisualScreenMask | VisualIDMask, &vi_in, &out_count);
     85    }
     86
     87    return egl_visualinfo;
     88}
     89
     90SDL_GLContext
     91X11_GLES_CreateContext(_THIS, SDL_Window * window)
     92{
     93    SDL_GLContext context;
     94    SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
     95    Display *display = data->videodata->display;
     96
     97    X11_XSync(display, False);
     98    context = SDL_EGL_CreateContext(_this, data->egl_surface);
     99    X11_XSync(display, False);
    100
    101    return context;
    102}
    103
    104SDL_EGL_SwapWindow_impl(X11)
    105SDL_EGL_MakeCurrent_impl(X11)
    106
    107#endif /* SDL_VIDEO_DRIVER_X11 && SDL_VIDEO_OPENGL_EGL */
    108
    109/* vi: set ts=4 sw=4 expandtab: */