Question

I use directx 9 to build model.

I want to save it to bmp file. I found the function D3DXSaveSurfaceToFile()

But I do not know how to use it in C#.

How can I use it?

Answer 1

Unfortunately, there is no such function in c#.
Try the following code instead:

try
{

// initialize D3D device 
PresentParameters presentParams = new PresentParameters();
presentParams.Windowed = true;
presentParams.SwapEffect = SwapEffect.Discard;
Device myDevice = new
Device(0,DeviceType.Hardware,this,CreateFlags.SoftwareVertexProcessing,presentParams);

// create a surface the size of screen, 
// format had to be A8R8G8B8, as the GetFrontBufferData returns
// only memory pool types allowed are Pool.Scratch or Pool.System memory
Surface mySurface =
myDevice.CreateOffscreenPlainSurface(SystemInformation.PrimaryMonitorSize.Width,SystemInformation.PrimaryMonitorSize.Height,Format.A8R8G8B8,Pool.SystemMemory);

//Get the front buffer.
myDevice.GetFrontBufferData(0,mySurface);

//saves surface to file
SurfaceLoader.Save("surface.bmp",ImageFileFormat.Bmp,mySurface);

}
catch
{
   //whatever
}