GxDevice.cpp

            typedef HGLRC (APIENTRY* PFNWGLCREATECONTEXTATTRIBSARB)(HDC hDc, HGLRC hShareContext, const int* attribList);
            PFNWGLCREATECONTEXTATTRIBSARB wglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARB)wglGetProcAddress("wglCreateContextAttribsARB");
            int attribs[] = {
                WGL_CONTEXT_MAJOR_VERSION_ARB, 4,
                WGL_CONTEXT_MINOR_VERSION_ARB, 1,
                WGL_CONTEXT_FLAGS_ARB, WGL_CONTEXT_DEBUG_BIT_ARB,
                WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB,
                0
            };

            auto tmpCtx = wglCreateContextAttribsARB(mWindowDC, nullptr, attribs);
            wglMakeCurrent(nullptr, nullptr);
            wglDeleteContext(mRenderContext);
            mRenderContext = tmpCtx;
            W32_CALL(wglMakeCurrent(mWindowDC, mRenderContext));