From 5a079a2d114f96d4847d1ee305d5b7c16eeec50e Mon Sep 17 00:00:00 2001 From: 3gg <3gg@shellblade.net> Date: Sat, 27 Dec 2025 12:03:39 -0800 Subject: Initial commit --- .../src/video/offscreen/SDL_offscreenopengles.c | 82 ++++++++++++++++++++++ 1 file changed, 82 insertions(+) create mode 100644 contrib/SDL-3.2.8/src/video/offscreen/SDL_offscreenopengles.c (limited to 'contrib/SDL-3.2.8/src/video/offscreen/SDL_offscreenopengles.c') diff --git a/contrib/SDL-3.2.8/src/video/offscreen/SDL_offscreenopengles.c b/contrib/SDL-3.2.8/src/video/offscreen/SDL_offscreenopengles.c new file mode 100644 index 0000000..87eed0e --- /dev/null +++ b/contrib/SDL-3.2.8/src/video/offscreen/SDL_offscreenopengles.c @@ -0,0 +1,82 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2025 Sam Lantinga + + 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_OFFSCREEN) && defined(SDL_VIDEO_OPENGL_EGL) + +#include "SDL_offscreenopengles.h" +#include "SDL_offscreenvideo.h" +#include "SDL_offscreenwindow.h" + +// EGL implementation of SDL OpenGL support + +bool OFFSCREEN_GLES_LoadLibrary(SDL_VideoDevice *_this, const char *path) +{ + if (!SDL_EGL_LoadLibraryOnly(_this, path)) { + return false; + } + + /* driver_loaded gets incremented by SDL_GL_LoadLibrary when we return, + but SDL_EGL_InitializeOffscreen checks that we're loaded before then, + so temporarily bump it since we know that LoadLibraryOnly succeeded. */ + bool result; + _this->gl_config.driver_loaded++; + result = SDL_EGL_InitializeOffscreen(_this, 0); + _this->gl_config.driver_loaded--; + if (!result) { + return false; + } + + if (!SDL_EGL_ChooseConfig(_this)) { + return false; + } + + return true; +} + +SDL_GLContext OFFSCREEN_GLES_CreateContext(SDL_VideoDevice *_this, SDL_Window *window) +{ + SDL_WindowData *offscreen_window = window->internal; + + SDL_GLContext context; + context = SDL_EGL_CreateContext(_this, offscreen_window->egl_surface); + + return context; +} + +bool OFFSCREEN_GLES_MakeCurrent(SDL_VideoDevice *_this, SDL_Window *window, SDL_GLContext context) +{ + if (window) { + EGLSurface egl_surface = window->internal->egl_surface; + return SDL_EGL_MakeCurrent(_this, egl_surface, context); + } else { + return SDL_EGL_MakeCurrent(_this, NULL, NULL); + } +} + +bool OFFSCREEN_GLES_SwapWindow(SDL_VideoDevice *_this, SDL_Window *window) +{ + SDL_WindowData *offscreen_wind = window->internal; + + return SDL_EGL_SwapBuffers(_this, offscreen_wind->egl_surface); +} + +#endif // SDL_VIDEO_DRIVER_OFFSCREEN && SDL_VIDEO_OPENGL_EGL -- cgit v1.2.3