/* ** ** **--------------------------------------------------------------------------- ** Copyright 2003-2005 Tim Stump ** Copyright 2005-2016 Christoph Oelckers ** All rights reserved. ** ** Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions ** are met: ** ** 1. Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** 2. Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in the ** documentation and/or other materials provided with the distribution. ** 3. The name of the author may not be used to endorse or promote products ** derived from this software without specific prior written permission. ** ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. **--------------------------------------------------------------------------- ** */ #define WIN32_LEAN_AND_MEAN #include #include #include "wglext.h" #include "gl_sysfb.h" #include "hardware.h" #include "templates.h" #include "version.h" #include "c_console.h" #include "v_video.h" #include "i_input.h" #include "i_system.h" #include "v_text.h" #include "m_argv.h" #include "engineerrors.h" #include "win32glvideo.h" extern HWND Window; extern "C" PROC zd_wglGetProcAddress(LPCSTR name); PFNWGLSWAPINTERVALEXTPROC myWglSwapIntervalExtProc; //========================================================================== // // Windows framebuffer // //========================================================================== //========================================================================== // // // //========================================================================== SystemGLFrameBuffer::SystemGLFrameBuffer(void *hMonitor, bool fullscreen) : SystemBaseFrameBuffer(hMonitor, fullscreen) { if (!static_cast(Video)->InitHardware(Window, 0)) { I_FatalError("Unable to initialize OpenGL"); return; } HDC hDC = GetDC(Window); const char *wglext = nullptr; myWglSwapIntervalExtProc = (PFNWGLSWAPINTERVALEXTPROC)zd_wglGetProcAddress("wglSwapIntervalEXT"); auto myWglGetExtensionsStringARB = (PFNWGLGETEXTENSIONSSTRINGARBPROC)zd_wglGetProcAddress("wglGetExtensionsStringARB"); if (myWglGetExtensionsStringARB) { wglext = myWglGetExtensionsStringARB(hDC); } else { auto myWglGetExtensionsStringEXT = (PFNWGLGETEXTENSIONSSTRINGEXTPROC)zd_wglGetProcAddress("wglGetExtensionsStringEXT"); if (myWglGetExtensionsStringEXT) { wglext = myWglGetExtensionsStringEXT(); } } SwapInterval = 1; if (wglext != nullptr) { if (strstr(wglext, "WGL_EXT_swap_control_tear")) { SwapInterval = -1; } } ReleaseDC(Window, hDC); } //========================================================================== // // // //========================================================================== EXTERN_CVAR(Bool, vid_vsync); CUSTOM_CVAR(Bool, gl_control_tear, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG) { vid_vsync.Callback(); } void SystemGLFrameBuffer::SetVSync (bool vsync) { if (myWglSwapIntervalExtProc != NULL) myWglSwapIntervalExtProc(vsync ? (gl_control_tear? SwapInterval : 1) : 0); } void SystemGLFrameBuffer::SwapBuffers() { ::SwapBuffers(static_cast(Video)->m_hDC); }