mirror of
https://github.com/Relintai/sdl2_frt.git
synced 2025-04-07 23:41:48 +02:00
b51a3206c8
SDL/WinRT did have support for OpenGL ES 2 via an older version of ANGLE/WinRT, however its API changed a few months ago, and SDL/WinRT would crash when trying to use it. It would also occasionally crash when using the older version. This changeset should make SDL/WinRT work with the latest version, as available via MS Open Tech's git repository of it at https://github.com/msopentech/angle Older versions of ANGLE/WinRT (from either https://github.com/stammen/angleproject or https://bitbucket.org/DavidLudwig/angleproject) will need to be updated to MS Open Tech's latest version.
113 lines
3.8 KiB
C++
113 lines
3.8 KiB
C++
/*
|
|
Simple DirectMedia Layer
|
|
Copyright (C) 1997-2014 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 SDL_VIDEO_DRIVER_WINRT && SDL_VIDEO_OPENGL_EGL
|
|
|
|
/* EGL implementation of SDL OpenGL support */
|
|
|
|
#include "SDL_winrtvideo_cpp.h"
|
|
extern "C" {
|
|
#include "SDL_winrtopengles.h"
|
|
#include "SDL_loadso.h"
|
|
}
|
|
|
|
/* Windows includes */
|
|
#include <wrl/client.h>
|
|
using namespace Windows::UI::Core;
|
|
|
|
/* ANGLE/WinRT constants */
|
|
static const int ANGLE_D3D_FEATURE_LEVEL_ANY = 0;
|
|
|
|
|
|
/*
|
|
* SDL/EGL top-level implementation
|
|
*/
|
|
|
|
extern "C" int
|
|
WINRT_GLES_LoadLibrary(_THIS, const char *path)
|
|
{
|
|
SDL_VideoData *video_data = (SDL_VideoData *)_this->driverdata;
|
|
|
|
if (SDL_EGL_LoadLibrary(_this, path, EGL_DEFAULT_DISPLAY) != 0) {
|
|
return -1;
|
|
}
|
|
|
|
/* Load ANGLE/WinRT-specific functions */
|
|
CreateWinrtEglWindow_Function CreateWinrtEglWindow = (CreateWinrtEglWindow_Function) SDL_LoadFunction(_this->egl_data->egl_dll_handle, "CreateWinrtEglWindow");
|
|
if (!CreateWinrtEglWindow) {
|
|
return SDL_SetError("Could not retrieve ANGLE/WinRT function CreateWinrtEglWindow");
|
|
}
|
|
|
|
/* Create an ANGLE/WinRT EGL-window */
|
|
/* TODO, WinRT: check for XAML usage before accessing the CoreWindow, as not doing so could lead to a crash */
|
|
CoreWindow ^ native_win = CoreWindow::GetForCurrentThread();
|
|
Microsoft::WRL::ComPtr<IUnknown> cpp_win = reinterpret_cast<IUnknown *>(native_win);
|
|
HRESULT result = CreateWinrtEglWindow(cpp_win, ANGLE_D3D_FEATURE_LEVEL_ANY, &(video_data->winrtEglWindow));
|
|
if (FAILED(result)) {
|
|
return -1;
|
|
}
|
|
|
|
/* Call eglGetDisplay and eglInitialize as appropriate. On other
|
|
* platforms, this would probably get done by SDL_EGL_LoadLibrary,
|
|
* however ANGLE/WinRT's current implementation (as of Mar 22, 2014) of
|
|
* eglGetDisplay requires that a C++ object be passed into it, so the
|
|
* call will be made in this file, a C++ file, instead.
|
|
*/
|
|
Microsoft::WRL::ComPtr<IUnknown> cpp_display = video_data->winrtEglWindow;
|
|
_this->egl_data->egl_display = ((eglGetDisplay_Function)_this->egl_data->eglGetDisplay)(cpp_display);
|
|
if (!_this->egl_data->egl_display) {
|
|
return SDL_SetError("Could not get EGL display");
|
|
}
|
|
|
|
if (_this->egl_data->eglInitialize(_this->egl_data->egl_display, NULL, NULL) != EGL_TRUE) {
|
|
return SDL_SetError("Could not initialize EGL");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
extern "C" void
|
|
WINRT_GLES_UnloadLibrary(_THIS)
|
|
{
|
|
SDL_VideoData *video_data = (SDL_VideoData *)_this->driverdata;
|
|
|
|
/* Release SDL's own COM reference to the ANGLE/WinRT IWinrtEglWindow */
|
|
if (video_data->winrtEglWindow) {
|
|
video_data->winrtEglWindow->Release();
|
|
video_data->winrtEglWindow = nullptr;
|
|
}
|
|
|
|
/* Perform the bulk of the unloading */
|
|
SDL_EGL_UnloadLibrary(_this);
|
|
}
|
|
|
|
extern "C" {
|
|
SDL_EGL_CreateContext_impl(WINRT)
|
|
SDL_EGL_SwapWindow_impl(WINRT)
|
|
SDL_EGL_MakeCurrent_impl(WINRT)
|
|
}
|
|
|
|
#endif /* SDL_VIDEO_DRIVER_WINRT && SDL_VIDEO_OPENGL_EGL */
|
|
|
|
/* vi: set ts=4 sw=4 expandtab: */
|
|
|