Initial commit

1 files changed, 82 insertions, 0 deletions

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 <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_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