Initial commit

1 files changed, 142 insertions, 0 deletions

diff --git a/contrib/SDL-3.2.8/src/video/windows/SDL_windowsopengles.c b/contrib/SDL-3.2.8/src/video/windows/SDL_windowsopengles.c
new file mode 100644
index 0000000..46f8ea3
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/video/windows/SDL_windowsopengles.c
@@ -0,0 +1,142 @@
+/*
+  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_WINDOWS) && defined(SDL_VIDEO_OPENGL_EGL) && !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES)
+
+#include "SDL_windowsvideo.h"
+#include "SDL_windowsopengles.h"
+#include "SDL_windowsopengl.h"
+#include "SDL_windowswindow.h"
+
+// EGL implementation of SDL OpenGL support
+
+bool WIN_GLES_LoadLibrary(SDL_VideoDevice *_this, const char *path)
+{
+
+    // If the profile requested is not GL ES, switch over to WIN_GL functions
+    if (_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES &&
+        !SDL_GetHintBoolean(SDL_HINT_VIDEO_FORCE_EGL, false)) {
+#ifdef SDL_VIDEO_OPENGL_WGL
+        WIN_GLES_UnloadLibrary(_this);
+        _this->GL_LoadLibrary = WIN_GL_LoadLibrary;
+        _this->GL_GetProcAddress = WIN_GL_GetProcAddress;
+        _this->GL_UnloadLibrary = WIN_GL_UnloadLibrary;
+        _this->GL_CreateContext = WIN_GL_CreateContext;
+        _this->GL_MakeCurrent = WIN_GL_MakeCurrent;
+        _this->GL_SetSwapInterval = WIN_GL_SetSwapInterval;
+        _this->GL_GetSwapInterval = WIN_GL_GetSwapInterval;
+        _this->GL_SwapWindow = WIN_GL_SwapWindow;
+        _this->GL_DestroyContext = WIN_GL_DestroyContext;
+        _this->GL_GetEGLSurface = NULL;
+        return WIN_GL_LoadLibrary(_this, path);
+#else
+        return SDL_SetError("SDL not configured with OpenGL/WGL support");
+#endif
+    }
+
+    if (!_this->egl_data) {
+        return SDL_EGL_LoadLibrary(_this, NULL, EGL_DEFAULT_DISPLAY, _this->gl_config.egl_platform);
+    }
+
+    return true;
+}
+
+SDL_GLContext WIN_GLES_CreateContext(SDL_VideoDevice *_this, SDL_Window *window)
+{
+    SDL_GLContext context;
+    SDL_WindowData *data = window->internal;
+
+#ifdef SDL_VIDEO_OPENGL_WGL
+    if (_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES &&
+        !SDL_GetHintBoolean(SDL_HINT_VIDEO_FORCE_EGL, false)) {
+        // Switch to WGL based functions
+        WIN_GLES_UnloadLibrary(_this);
+        _this->GL_LoadLibrary = WIN_GL_LoadLibrary;
+        _this->GL_GetProcAddress = WIN_GL_GetProcAddress;
+        _this->GL_UnloadLibrary = WIN_GL_UnloadLibrary;
+        _this->GL_CreateContext = WIN_GL_CreateContext;
+        _this->GL_MakeCurrent = WIN_GL_MakeCurrent;
+        _this->GL_SetSwapInterval = WIN_GL_SetSwapInterval;
+        _this->GL_GetSwapInterval = WIN_GL_GetSwapInterval;
+        _this->GL_SwapWindow = WIN_GL_SwapWindow;
+        _this->GL_DestroyContext = WIN_GL_DestroyContext;
+        _this->GL_GetEGLSurface = NULL;
+
+        if (!WIN_GL_LoadLibrary(_this, NULL)) {
+            return NULL;
+        }
+
+        return WIN_GL_CreateContext(_this, window);
+    }
+#endif
+
+    context = SDL_EGL_CreateContext(_this, data->egl_surface);
+    return context;
+}
+
+bool WIN_GLES_DestroyContext(SDL_VideoDevice *_this, SDL_GLContext context)
+{
+    return SDL_EGL_DestroyContext(_this, context);
+}
+
+/* *INDENT-OFF* */ // clang-format off
+SDL_EGL_SwapWindow_impl(WIN)
+SDL_EGL_MakeCurrent_impl(WIN)
+/* *INDENT-ON* */ // clang-format on
+
+bool WIN_GLES_SetupWindow(SDL_VideoDevice *_this, SDL_Window *window)
+{
+    // The current context is lost in here; save it and reset it.
+    SDL_WindowData *windowdata = window->internal;
+    SDL_Window *current_win = SDL_GL_GetCurrentWindow();
+    SDL_GLContext current_ctx = SDL_GL_GetCurrentContext();
+
+    if (!_this->egl_data) {
+// !!! FIXME: commenting out this assertion is (I think) incorrect; figure out why driver_loaded is wrong for ANGLE instead. --ryan.
+#if 0 // When hint SDL_HINT_OPENGL_ES_DRIVER is set to "1" (e.g. for ANGLE support), _this->gl_config.driver_loaded can be 1, while the below lines function.
+        SDL_assert(!_this->gl_config.driver_loaded);
+#endif
+        if (!SDL_EGL_LoadLibrary(_this, NULL, EGL_DEFAULT_DISPLAY, _this->gl_config.egl_platform)) {
+            SDL_EGL_UnloadLibrary(_this);
+            return false;
+        }
+        _this->gl_config.driver_loaded = 1;
+    }
+
+    // Create the GLES window surface
+    windowdata->egl_surface = SDL_EGL_CreateSurface(_this, window, (NativeWindowType)windowdata->hwnd);
+
+    if (windowdata->egl_surface == EGL_NO_SURFACE) {
+        return SDL_SetError("Could not create GLES window surface");
+    }
+
+    return WIN_GLES_MakeCurrent(_this, current_win, current_ctx);
+}
+
+EGLSurface WIN_GLES_GetEGLSurface(SDL_VideoDevice *_this, SDL_Window *window)
+{
+    SDL_WindowData *windowdata = window->internal;
+
+    return windowdata->egl_surface;
+}
+
+#endif // SDL_VIDEO_DRIVER_WINDOWS && SDL_VIDEO_OPENGL_EGL