Beispiel #1
0
        /// <summary>
        /// Create the device context and set the pixel format.
        /// </summary>
        protected void CreateDeviceContext()
        {
            // Create device context
            _DeviceContext = DeviceContextFactory.Create(this);
            _DeviceContext.IncRef();

            // Set pixel format
            DevicePixelFormatCollection pixelFormats     = _DeviceContext.PixelsFormats;
            DevicePixelFormat           controlReqFormat = new DevicePixelFormat();

            controlReqFormat.ColorBits       = (int)ColorBits;
            controlReqFormat.DepthBits       = (int)DepthBits;
            controlReqFormat.StencilBits     = (int)StencilBits;
            controlReqFormat.MultisampleBits = (int)MultisampleBits;
            controlReqFormat.DoubleBuffer    = DoubleBuffer;

            List <DevicePixelFormat> matchingPixelFormats = pixelFormats.Choose(controlReqFormat);

            if (matchingPixelFormats.Count == 0)
            {
                throw new InvalidOperationException("unable to find a suitable pixel format");
            }

            _DeviceContext.SetPixelFormat(matchingPixelFormats[0]);
        }
Beispiel #2
0
        /// <summary>
        /// Actually create this GraphicsWindow resources.
        /// </summary>
        /// <param name="ctx">
        /// A <see cref="GraphicsContext"/> used for allocating resources.
        /// </param>
        protected override void CreateObject(GraphicsContext ctx)
        {
            if (ctx != null)
            {
                throw new ArgumentException("context not required", "ctx");
            }

            sLog.Info("Create rendering window '{0}'.", _RenderForm != null ? _RenderForm.Text : "untitled");

            // Obtain device context (relative to window)
            _DeviceContext = DeviceContextFactory.Create(_RenderControl);
            _DeviceContext.IncRef();

            // Choose "best" pixel format matching with surface configuration
            _DeviceFormat = _SurfaceFormat.ChoosePixelFormat(_DeviceContext, ValidPixelFormat);
            // Set device pixel format
            _DeviceContext.SetPixelFormat(_DeviceFormat);
            // Confirm surface configuration
            _SurfaceFormat.SetBufferConfiguration(_DeviceFormat);

            // Set swap interval
            SetSwapInterval();
        }
Beispiel #3
0
        /// <summary>
        /// Static constructor.
        /// </summary>
        static Gl()
        {
            // Cache imports & delegates
            _Delegates = GetDelegateList(typeof(Gl));
            _ImportMap = GetImportMap(typeof(Gl));
            // Load procedures (OpenGL desktop by default) @todo Really necessary?
            LoadProcDelegates(_ImportMap, _Delegates);

            // Create common hidden window
            _HiddenWindow = new System.Windows.Forms.Form();
            // Create device context
            _HiddenWindowDevice = DeviceContextFactory.Create(_HiddenWindow);
            _HiddenWindowDevice.IncRef();

            // Create basic OpenGL context
            IntPtr renderContext;

            if (_HiddenWindowDevice is WindowsDeviceContext)
            {
                renderContext = CreateWinSimpleContext(_HiddenWindowDevice);
            }
            else if (_HiddenWindowDevice is XServerDeviceContext)
            {
                renderContext = CreateX11SimpleContext(_HiddenWindowDevice);
            }
            else if (_HiddenWindowDevice is NativeDeviceContext)
            {
                renderContext = CreateEglSimpleContext(_HiddenWindowDevice);
            }
            else
            {
                throw new NotImplementedException(String.Format("{0} is not a supported device context", _HiddenWindowDevice.GetType()));
            }

            // Query OpenGL informations
            if (_HiddenWindowDevice.MakeCurrent(renderContext) == false)
            {
                throw new InvalidOperationException("unable to make current");
            }

            // Obtain current OpenGL implementation
            string glVersion = Gl.GetString(StringName.Version);

            _CurrentVersion = KhronosVersion.Parse(glVersion);

            // Obtain current OpenGL Shading Language version
            string glslVersion = Gl.GetString(StringName.ShadingLanguageVersion);

            _CurrentShadingVersion = GlslVersion.Parse(glslVersion);

            // Query OpenGL extensions (current OpenGL implementation, CurrentCaps)
            _CurrentExtensions = new Extensions();
            _CurrentExtensions.Query();
            // Query OpenGL limits
            _CurrentLimits = Limits.Query(_CurrentExtensions);

            if (_HiddenWindowDevice is WindowsDeviceContext)
            {
                Wgl._CurrentExtensions = new Wgl.Extensions();
                Wgl._CurrentExtensions.Query((WindowsDeviceContext)_HiddenWindowDevice);
            }
            else if (_HiddenWindowDevice is XServerDeviceContext)
            {
                Glx._CurrentExtensions = new Glx.Extensions();
                Glx._CurrentExtensions.Query((XServerDeviceContext)_HiddenWindowDevice);
            }
            else if (_HiddenWindowDevice is NativeDeviceContext)
            {
                Egl._CurrentExtensions = new Egl.Extensions();
                Egl._CurrentExtensions.Query((NativeDeviceContext)_HiddenWindowDevice);
            }

            // Before deletion, make uncurrent
            _HiddenWindowDevice.MakeCurrent(IntPtr.Zero);
            // Detroy context
            if (_HiddenWindowDevice.DeleteContext(renderContext) == false)
            {
                throw new InvalidOperationException("unable to delete OpenGL context");
            }
        }