Question

我已经编写了一个HLSL代码，用于在背景图像上使用Kinect的深度视图来提高玩家的透明度。这是我的HLSL代码：

sampler stream : register(s0);
sampler back : register(s1);
sampler middle : register(s2);
sampler character : register(s3);


float4 DepthToRGB(float2 texCoord : TEXCOORD0) : COLOR0
{
    float4 color = tex2D(stream, texCoord);
    float4 backColor =  tex2D(back, texCoord);
    float4 middleColor = tex2D(middle, texCoord);
    float4 characterColor = tex2D(character, texCoord);

    // convert from [0,1] to [0,15]
    color *= 15.01f;

    // unpack the individual components into a single int
    int4 iColor = (int4)color;
    int depthV = iColor.w * 4096 + iColor.x * 256 + iColor.y * 16 + iColor.z;

    // player mask is in the lower 8 bits
    int playerId = depthV % 8;

    if(playerId == 0)
    {
        //Not yet recognized
        return backColor * middleColor;
    }
    else
    {
        return characterColor;
    }
}

technique KinectDepth
{
    pass KinectDepth
    {
        PixelShader = compile ps_2_0 DepthToRGB();
    }
}

这是我在C＃中的Draw方法：

public void Draw(GameTime gameTime, SpriteBatch SharedSpriteBatch)
    {
        // If we don't have a depth target, exit
        if (this.depthTexture == null) return;

        if (this.needToRedrawBackBuffer)
        {
            // Set the backbuffer and clear
            this.GraphicsDevice.SetRenderTarget(this.backBuffer);
            this.GraphicsDevice.Clear(ClearOptions.Target, Color.Black, 1.0f, 0);

            this.depthTexture.SetData<short>(this.depthData);


            GraphicsDevice.Textures[0] = this.depthTexture;
            GraphicsDevice.Textures[1] = back;
            GraphicsDevice.Textures[2] = middle;
            GraphicsDevice.Textures[3] = character;

            // Draw the depth image
            SharedSpriteBatch.Begin(SpriteSortMode.Immediate, null, null, null, null, this.kinectDepthVisualizer);
            SharedSpriteBatch.Draw(this.depthTexture, Vector2.Zero, Color.White);
            SharedSpriteBatch.End();

            // Reset the render target and prepare to draw scaled image
            this.GraphicsDevice.SetRenderTarget(null);

            // No need to re-render the back buffer until we get new data
            this.needToRedrawBackBuffer = false;
        }

        // Draw scaled image
        SharedSpriteBatch.Begin();
        SharedSpriteBatch.Draw(
            this.backBuffer,
            new Rectangle((int)Position.X, (int)Position.Y, (int)Size.X, (int)Size.Y),
            null,
            Color.White);
        SharedSpriteBatch.End();
    }

背面和角色是我的前景和背景图像。 middle用于在前景和背景图像之间放置对象。当我在物体上移动身体时，物体就会出现。

我想问一下，当物体出现时，我怎样才能在2秒后发出一个事件？

由于

使用HLSL和XNA显示对象时引发事件

0 个答案: