diff options
Diffstat (limited to 'src/video/win32_v.cpp')
| -rw-r--r-- | src/video/win32_v.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/video/win32_v.cpp b/src/video/win32_v.cpp index 975fee974..e32b80497 100644 --- a/src/video/win32_v.cpp +++ b/src/video/win32_v.cpp @@ -1328,6 +1328,7 @@ void VideoDriver_Win32GDI::PaintThread() #endif static PFNWGLCREATECONTEXTATTRIBSARBPROC _wglCreateContextAttribsARB = nullptr; +static PFNWGLSWAPINTERVALEXTPROC _wglSwapIntervalEXT = nullptr; static bool _hasWGLARBCreateContextProfile = false; ///< Is WGL_ARB_create_context_profile supported? /** Platform-specific callback to get an OpenGL funtion pointer. */ @@ -1398,6 +1399,9 @@ static void LoadWGLExtensions() _wglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)wglGetProcAddress("wglCreateContextAttribsARB"); } _hasWGLARBCreateContextProfile = FindStringInExtensionList(wgl_exts, "WGL_ARB_create_context_profile") != nullptr; + if (FindStringInExtensionList(wgl_exts, "WGL_EXT_swap_control") != nullptr) { + _wglSwapIntervalEXT = (PFNWGLSWAPINTERVALEXTPROC)wglGetProcAddress("wglSwapIntervalEXT"); + } } wglMakeCurrent(nullptr, nullptr); @@ -1416,6 +1420,7 @@ const char *VideoDriver_Win32OpenGL::Start(const StringList ¶m) if (BlitterFactory::GetCurrentBlitter()->GetScreenDepth() != 32) return "Only 32bpp blitters supported"; Dimension old_res = _cur_resolution; // Save current screen resolution in case of errors, as MakeWindow invalidates it. + this->vsync = GetDriverParamBool(param, "vsync"); LoadWGLExtensions(); @@ -1487,6 +1492,13 @@ const char *VideoDriver_Win32OpenGL::AllocateContext() } if (!wglMakeCurrent(this->dc, rc)) return "Can't active GL context"; + /* Enable/disable Vsync if supported. */ + if (_wglSwapIntervalEXT != nullptr) { + _wglSwapIntervalEXT(this->vsync ? 1 : 0); + } else if (vsync) { + DEBUG(driver, 0, "OpenGL: Vsync requested, but not supported by driver"); + } + this->gl_rc = rc; return OpenGLBackend::Create(&GetOGLProcAddressCallback); } |