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/windows/SDL_windowsopengles.c | 142 +++++++++++++++++++++ 1 file changed, 142 insertions(+) create mode 100644 contrib/SDL-3.2.8/src/video/windows/SDL_windowsopengles.c (limited to 'contrib/SDL-3.2.8/src/video/windows/SDL_windowsopengles.c') 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 + + 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 -- cgit v1.2.3