我目前正在使用SharpDX.Direct2D1
制作2D应用程序。
这是我的2D deviceContext正常运行的设置。
m_swapchaindesc = New SwapChainDescription()
With m_swapchaindesc
.BufferCount = 2
.ModeDescription =
New ModeDescription(control.Width, control.Height,
New Rational(60, 1), Format.R8G8B8A8_UNorm)
.IsWindowed = True
.OutputHandle = control.Handle
.SampleDescription = New SampleDescription(1, 0)
.SwapEffect = SwapEffect.Discard
.Usage = Usage.RenderTargetOutput
End With
SharpDX.Direct3D11.Device.CreateWithSwapChain(DriverType.Hardware, DeviceCreationFlags.BgraSupport Or DeviceCreationFlags.Debug, m_swapchaindesc, m_device, m_swapChain)
Dim dxgiDevice As SharpDX.DXGI.Device = m_device.QueryInterface(Of SharpDX.DXGI.Device)()
m_2dDevice = New SharpDX.Direct2D1.Device(dxgiDevice)
m_d2dContext = New SharpDX.Direct2D1.DeviceContext(m_2dDevice, SharpDX.Direct2D1.DeviceContextOptions.None)
m_properties = New BitmapProperties(New SharpDX.Direct2D1.PixelFormat(SharpDX.DXGI.Format.R8G8B8A8_UNorm, SharpDX.Direct2D1.AlphaMode.Premultiplied), 96, 96)
m_backBuffer = m_swapChain.GetBackBuffer(Of Surface)(0)
m_2dTarget = New SharpDX.Direct2D1.Bitmap(m_d2dContext, m_backBuffer, m_properties)
m_d2dContext.Target = m_2dTarget
我的问题:我想在我的deviceContext上绘制8bpp位图灰度,这意味着我不需要每个像素32bits占用大量内存。我希望它仅8位用于存储目的。我这样做的问题是设置我的
BitmapProperties
,只有一个Format.R8_Unorm
或Format.A8_Unorm
看起来很有趣,因为我猜他们只有8bpp。但是,当我使用这种格式并尝试实例化SharpDX.Direct2D1.Bitmap
时,它返回一条错误消息,提示WRONGPIXELFORMAT。我意识到在创建位图时,只有
Format.R8G8B8A8_Unorm
似乎起作用,而我不需要。你们有没有在SharpDX上处理过8bpp灰度位图?
最佳答案
您不能将8BPP位图与SharpDX(DirectX)一起使用。 DirectX不支持此格式。为了能够显示灰度图像,您必须将rgb的所有值都设置为相同的值,或者对图像应用着色器以将所有颜色转换为灰色。
关于c# - SharpDX.Direct2D1.Bitmap的灰度8BPP位图,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/44949390/