问题描述
我试图做一个非常简单的应用程序，它会在每只眼睛显示不同的图像。我有华硕VG236H显示器和NVIDIA 3D Vision套装，立体3D快门眼镜。在我使用C＃.NET框架2.0，DirectX 9的（管理的Direct X）和Visual Studio 2008年。我一直在寻找高和低例子和教程，反倒发现一对夫妇和基于那些我所创建的程序，但出于某种原因，我不能得到它的工作。
在寻找例子如何为每只眼睛显示不同的图像，很多人守在GDC 09指的是NVIDIA演示（著名GDC09-3DVision，The_In_and_Out.pdf文件）和37-40的页面。我的代码主要是基于这样的例子来构建：
- 我加载表面上两个纹理（Red.png和Blue.png）（ _imageLeft和_imageRight），在函数LoadSurfaces（）
- Set3D（）函数将这些两个图像并排侧具有2个屏幕宽度和屏幕高度的大小为一更大的图像+ 1（_imageBuf）
- Set3D（）函数的最后一行追加立体声签名继续
- 的OnPaint（） - 函数将回缓冲区（_backBuf张）以及合成图像（_imageBuf）的内容吧。
当我运行程序，快门眼镜开始工作，但我只看到两个图像并排侧的屏幕上。可能有人帮帮忙，告诉我，我到底做错了什么？我认为，解决这个问题也可以帮助别人，因为还不似乎是一个简单的例子，如何用C＃做到这一点。
下面是我的代码的战术部分。完整的项目可以在这里下载：
公共无效InitializeDevice（）
{
PresentParameters presentParams =新PresentParameters（）;
presentParams.Windowed = FALSE;
presentParams.BackBufferFormat = Format.A8R8G8B8;
presentParams.BackBufferWidth = _size.Width;
presentParams.BackBufferHeight = _size.Height;
presentParams.BackBufferCount = 1;
presentParams.SwapEffect = SwapEffect.Discard;
presentParams.PresentationInterval = PresentInterval.One;
_device =新的设备（0，DeviceType.Hardware，为此，CreateFlags.SoftwareVertexProcessing，presentParams）;
}
公共无效LoadSurfaces（）
{
_imageBuf = _device.CreateOffscreenPlainSurface（_size.Width * 2，_size.Height + 1，Format.A8R8G8B8，游泳池。默认）;
_imageLeft = Surface.FromBitmap（_device，（位图）Bitmap.FromFile（Blue.png），Pool.Default）;
_imageRight = Surface.FromBitmap（_device，（位图）Bitmap.FromFile（Red.png），Pool.Default）;
}
私人无效Set3D（）
{
矩形destRect =新的Rectangle（0，0，_size.Width，_size.Height）;
_device.StretchRectangle（_imageLeft，_size，_imageBuf，destRect，TextureFilter.None）;
destRect.X = _size.Width;
_device.StretchRectangle（_imageRight，_size，_imageBuf，destRect，TextureFilter.None）;
GraphicsStream gStream = _imageBuf.LockRectangle（LockFlags.None）;
字节[]数据=新的字节[] {0x44进行，0x33，0x56，0x4e，// NVSTEREO_IMAGE_SIGNATURE = 0x4433564e
为0x00，0x00时，为0x0F，0×00，//屏幕宽度* 2 = 1920 * 2 = 3840 = 0x00000F00;
为0x00，0x00时，0x04的0x38，//屏幕高度= 1080 = 0x00000438;
为0x00，0x00时，为0x00，0x20的，// dwBPP = 32 = 0x00000020;
为0x00，0x00时，0×00，0×02}; // dwFlags中= SIH_SCALE_TO_FIT = 0x00000002;
gStream.Seek（_size.Width * 2 * _size.Height * 4，System.IO.SeekOrigin.Begin）; //最后一行
gStream.Write（数据，0，data.Length）;
gStream.Close（）;
_imageBuf.UnlockRectangle（）;
}
保护覆盖无效的OnPaint（System.Windows.Forms.PaintEventArgs E）
{
_device.BeginScene（）;
//获取后备缓冲，然后伸展它的表面。
_backBuf = _device.GetBackBuffer（0，0，BackBufferType.Mono）;
_device.StretchRectangle（_imageBuf，新矩形（0，0，_size.Width * 2，_size.Height + 1）_backBuf，新矩形（0，0，_size.Width，_size.Height），TextureFilter。没有）;
_backBuf.ReleaseGraphics（）;
_device.EndScene（）;
_device.Present（）;
this.Invalidate（）;
}
我的一个朋友找到了问题。在立体声签名的字节是在相反的顺序。下面是正确的顺序：
字节[]数据=新的字节[] {0x4e，0x56，0x33，0x44进行，// NVSTEREO_IMAGE_SIGNATURE = 0x4433564e;
为0x00，为0x0F，为0x00，0x00时，//屏幕宽度* 2 = 1920 * 2 = 3840 = 0x00000F00;
0x38，0x04的0x00时，为0x00，//屏幕高度= 1080 = 0x00000438;
为0x20，0x00时，为0x00，0x00时，// dwBPP = 32 = 0x00000020;
0X02，0×00，0×00，0×00}; // dwFlags中= SIH_SCALE_TO_FIT = 0x00000002;
中的代码此更改后完美的作品。此代码甚至可以作为一个很好的教程为别人尝试同样的事情。 ：）
I’m trying to make a very simple application which would display different images on each eye. I have Asus VG236H monitor and NVIDIA 3D Vision kit, the stereo 3D shutter glasses. The I’m using C#, .NET Framework 2.0, DirectX 9 (Managed Direct X) and Visual Studio 2008. I have been searching high and low for examples and tutorials, have actually found a couple and based those I have created the program but for some reason I can’t get it working.
When looking for examples how to display different images for each eye, many people keep referring to the NVIDIA presentation at GDC 09 (the famous GDC09-3DVision-The_In_and_Out.pdf document) and the pages 37-40. My code is mainly constructed based on that example:
- I'm loading two textures (Red.png and Blue.png) on surface (_imageLeft and _imageRight), in function LoadSurfaces()
- Set3D() function puts those two images side-by-side to one bigger image which has the size of 2x Screen width and Screen height + 1 (_imageBuf).
- Set3D() function continues by appending the stereo signature on the last row.
- OnPaint()-function takes the back buffer (_backBuf) and copies the content of the combined image (_imageBuf) to it.
When I run the program, shutter glasses start working, but I only see the two images side-by-side on the screen. Could someone help out and tell me what am I doing wrong? I believe that solving this problem might also help others as there does not yet seem to be a simple example how to do this with C#.
Below are the tactical parts of my code. Complete project can be downloaded here: http://koti.mbnet.fi/jjantti2/NVStereoTest.rar
public void InitializeDevice()
{
PresentParameters presentParams = new PresentParameters();
presentParams.Windowed = false;
presentParams.BackBufferFormat = Format.A8R8G8B8;
presentParams.BackBufferWidth = _size.Width;
presentParams.BackBufferHeight = _size.Height;
presentParams.BackBufferCount = 1;
presentParams.SwapEffect = SwapEffect.Discard;
presentParams.PresentationInterval = PresentInterval.One;
_device = new Device(0, DeviceType.Hardware, this, CreateFlags.SoftwareVertexProcessing, presentParams);
}
public void LoadSurfaces()
{
_imageBuf = _device.CreateOffscreenPlainSurface(_size.Width * 2, _size.Height + 1, Format.A8R8G8B8, Pool.Default);
_imageLeft = Surface.FromBitmap(_device, (Bitmap)Bitmap.FromFile("Blue.png"), Pool.Default);
_imageRight = Surface.FromBitmap(_device, (Bitmap)Bitmap.FromFile("Red.png"), Pool.Default);
}
private void Set3D()
{
Rectangle destRect = new Rectangle(0, 0, _size.Width, _size.Height);
_device.StretchRectangle(_imageLeft, _size, _imageBuf, destRect, TextureFilter.None);
destRect.X = _size.Width;
_device.StretchRectangle(_imageRight, _size, _imageBuf, destRect, TextureFilter.None);
GraphicsStream gStream = _imageBuf.LockRectangle(LockFlags.None);
byte[] data = new byte[] {0x44, 0x33, 0x56, 0x4e, //NVSTEREO_IMAGE_SIGNATURE = 0x4433564e
0x00, 0x00, 0x0F, 0x00, //Screen width * 2 = 1920*2 = 3840 = 0x00000F00;
0x00, 0x00, 0x04, 0x38, //Screen height = 1080 = 0x00000438;
0x00, 0x00, 0x00, 0x20, //dwBPP = 32 = 0x00000020;
0x00, 0x00, 0x00, 0x02}; //dwFlags = SIH_SCALE_TO_FIT = 0x00000002;
gStream.Seek(_size.Width * 2 * _size.Height * 4, System.IO.SeekOrigin.Begin); //last row
gStream.Write(data, 0, data.Length);
gStream.Close();
_imageBuf.UnlockRectangle();
}
protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
{
_device.BeginScene();
// Get the Backbuffer then Stretch the Surface on it.
_backBuf = _device.GetBackBuffer(0, 0, BackBufferType.Mono);
_device.StretchRectangle(_imageBuf, new Rectangle(0, 0, _size.Width * 2, _size.Height + 1), _backBuf, new Rectangle(0, 0, _size.Width, _size.Height), TextureFilter.None);
_backBuf.ReleaseGraphics();
_device.EndScene();
_device.Present();
this.Invalidate();
}
A friend of mine found the problem. The bytes in the stereo signature were in reversed order. Here is the correct order:
byte[] data = new byte[] {0x4e, 0x56, 0x33, 0x44, //NVSTEREO_IMAGE_SIGNATURE = 0x4433564e;
0x00, 0x0F, 0x00, 0x00, //Screen width * 2 = 1920*2 = 3840 = 0x00000F00;
0x38, 0x04, 0x00, 0x00, //Screen height = 1080 = 0x00000438;
0x20, 0x00, 0x00, 0x00, //dwBPP = 32 = 0x00000020;
0x02, 0x00, 0x00, 0x00}; //dwFlags = SIH_SCALE_TO_FIT = 0x00000002;
The code works perfectly after this change. This code might even serve as a good tutorial for someone else attempting the same thing. :)
这篇关于如何用C＃单独控制立体声帧？ （NVIDIA 3D快门眼镜）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！