static LRESULT CALLBACK VideoGDI_WindowProcedure(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam) { return DefWindowProc(hwnd, msg, wparam, lparam); } struct VideoGDI : VideoDriver { VideoGDI& self = *this; VideoGDI(Video& super) : VideoDriver(super) { construct(); } ~VideoGDI() { destruct(); } auto create() -> bool override { super.setShader("None"); return initialize(); } auto driver() -> string override { return "GDI"; } auto ready() -> bool override { return _ready; } auto hasExclusive() -> bool override { return true; } auto hasContext() -> bool override { return true; } auto setExclusive(bool exclusive) -> bool override { return initialize(); } auto setContext(uintptr context) -> bool override { return initialize(); } auto size(uint& width, uint& height) -> void override { RECT rectangle; GetClientRect(_context, &rectangle); width = rectangle.right - rectangle.left; height = rectangle.bottom - rectangle.top; } auto acquire(uint32_t*& data, uint& pitch, uint width, uint height) -> bool override { if(!_buffer || _width != width || _height != height) { if(_buffer) delete[] _buffer; if(_bitmap) DeleteObject(_bitmap); if(_dc) DeleteObject(_dc); _buffer = new uint32_t[width * height](); _width = width; _height = height; HDC hdc = GetDC(_context); _dc = CreateCompatibleDC(hdc); _bitmap = CreateCompatibleBitmap(hdc, width, height); SelectObject(_dc, _bitmap); ReleaseDC(_context, hdc); memory::fill(&_info, sizeof(BITMAPINFO)); _info.bmiHeader.biSize = sizeof(BITMAPINFOHEADER); _info.bmiHeader.biWidth = width; _info.bmiHeader.biHeight = -height; _info.bmiHeader.biPlanes = 1; _info.bmiHeader.biBitCount = 32; _info.bmiHeader.biCompression = BI_RGB; _info.bmiHeader.biSizeImage = width * height * sizeof(uint32_t); } pitch = _width * sizeof(uint32_t); return data = _buffer; } auto release() -> void override { } auto output(uint width, uint height) -> void override { uint windowWidth, windowHeight; size(windowWidth, windowHeight); SetDIBits(_dc, _bitmap, 0, _height, (void*)_buffer, &_info, DIB_RGB_COLORS); HDC hdc = GetDC(_context); StretchBlt(hdc, ((int)windowWidth - (int)width) / 2, ((int)windowHeight - (int)height) / 2, width, height, _dc, 0, 0, _width, _height, SRCCOPY ); ReleaseDC(_context, hdc); } private: auto construct() -> void { WNDCLASS windowClass{}; windowClass.cbClsExtra = 0; windowClass.cbWndExtra = 0; windowClass.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH); windowClass.hCursor = LoadCursor(0, IDC_ARROW); windowClass.hIcon = LoadIcon(nullptr, IDI_APPLICATION); windowClass.hInstance = GetModuleHandle(0); windowClass.lpfnWndProc = VideoGDI_WindowProcedure; windowClass.lpszClassName = L"VideoGDI_Window"; windowClass.lpszMenuName = 0; windowClass.style = CS_HREDRAW | CS_VREDRAW; RegisterClass(&windowClass); } auto destruct() -> void { terminate(); } auto initialize() -> bool { terminate(); if(!self.exclusive && !self.context) return false; POINT point{0, 0}; HMONITOR monitor = MonitorFromPoint(point, MONITOR_DEFAULTTOPRIMARY); MONITORINFOEX information{}; information.cbSize = sizeof(MONITORINFOEX); GetMonitorInfo(monitor, &information); uint monitorWidth = information.rcMonitor.right - information.rcMonitor.left; uint monitorHeight = information.rcMonitor.bottom - information.rcMonitor.top; if(self.exclusive) { _context = _exclusive = CreateWindowEx(WS_EX_TOPMOST, L"VideoGDI_Window", L"", WS_VISIBLE | WS_POPUP, information.rcMonitor.left, information.rcMonitor.top, monitorWidth, monitorHeight, nullptr, nullptr, GetModuleHandle(0), nullptr); } else { _context = (HWND)self.context; } _width = 0; _height = 0; return _ready = true; } auto terminate() -> void { _ready = false; if(_buffer) { delete[] _buffer; _buffer = nullptr; } if(_bitmap) { DeleteObject(_bitmap); _bitmap = nullptr; } if(_dc) { DeleteDC(_dc); _dc = nullptr; } if(_exclusive) { DestroyWindow(_exclusive); _exclusive = nullptr; } _context = nullptr; } bool _ready = false; uint32_t* _buffer = nullptr; uint _width = 0; uint _height = 0; HWND _exclusive = nullptr; HWND _context = nullptr; HBITMAP _bitmap = nullptr; HDC _dc = nullptr; BITMAPINFO _info = {}; };