/// <summary>
/// Initializes a new instance of the <see cref="D3D11Viewport"/> struct.
/// </summary>
/// <param name="buffer">A buffer.</param>
/// <param name="view">The render-target view.</param>
/// <param name="topLeftX">The X position of the left hand side of the viewport.</param>
/// <param name="minDepth">The minimum depth of the viewport.</param>
/// <param name="maxDepth">The maximum depth of the viewport.</param>
public D3D11Viewport(D3D11Buffer buffer, D3D11RenderTargetView view, float topLeftX, float minDepth, float maxDepth)
{
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (view == null)
{
throw new ArgumentNullException("view");
}
var description = view.Description;
uint numElements;
switch (description.ViewDimension)
{
case D3D11RtvDimension.Buffer:
numElements = description.Buffer.NumElements;
break;
default:
throw new ArgumentOutOfRangeException("view");
}
this.topLeftX = topLeftX;
this.topLeftY = 0.0f;
this.width = numElements - topLeftX;
this.height = 1.0f;
this.minDepth = minDepth;
this.maxDepth = maxDepth;
}
/// <summary>
/// Initializes a new instance of the <see cref="D3D11Viewport"/> struct.
/// </summary>
/// <param name="texture">A 2D texture.</param>
/// <param name="view">The render-target view.</param>
/// <param name="topLeftX">The X position of the left hand side of the viewport.</param>
/// <param name="topLeftY">The Y position of the top of the viewport.</param>
/// <param name="minDepth">The minimum depth of the viewport.</param>
/// <param name="maxDepth">The maximum depth of the viewport.</param>
public D3D11Viewport(D3D11Texture2D texture, D3D11RenderTargetView view, float topLeftX, float topLeftY, float minDepth, float maxDepth)
{
if (texture == null)
{
throw new ArgumentNullException("texture");
}
if (view == null)
{
throw new ArgumentNullException("view");
}
var textureDescription = texture.Description;
var viewDescription = view.Description;
uint mipSlice;
switch (viewDescription.ViewDimension)
{
case D3D11RtvDimension.Texture2D:
mipSlice = viewDescription.Texture2D.MipSlice;
break;
case D3D11RtvDimension.Texture2DArray:
mipSlice = viewDescription.Texture2DArray.MipSlice;
break;
case D3D11RtvDimension.Texture2DMs:
case D3D11RtvDimension.Texture2DMsArray:
mipSlice = 0;
break;
default:
throw new ArgumentOutOfRangeException("view");
}
uint subResourceWidth = textureDescription.Width / (uint)(1 << (int)mipSlice);
uint subResourceHeight = textureDescription.Height / (uint)(1 << (int)mipSlice);
this.topLeftX = topLeftX;
this.topLeftY = topLeftY;
this.width = (subResourceWidth != 0 ? subResourceWidth : 1) - topLeftX;
this.height = (subResourceHeight != 0 ? subResourceHeight : 1) - topLeftY;
this.minDepth = minDepth;
this.maxDepth = maxDepth;
}
/// <summary>
/// Initializes a new instance of the <see cref="D3D11Viewport"/> struct.
/// </summary>
/// <param name="buffer">A buffer.</param>
/// <param name="view">The render-target view.</param>
/// <param name="topLeftX">The X position of the left hand side of the viewport.</param>
public D3D11Viewport(D3D11Buffer buffer, D3D11RenderTargetView view, float topLeftX)
: this(buffer, view, topLeftX, 0.0f, 1.0f)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="D3D11Viewport"/> struct.
/// </summary>
/// <param name="buffer">A buffer.</param>
/// <param name="view">The render-target view.</param>
public D3D11Viewport(D3D11Buffer buffer, D3D11RenderTargetView view)
: this(buffer, view, 0.0f, 0.0f, 1.0f)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="D3D11Viewport"/> struct.
/// </summary>
/// <param name="texture">A 3D texture.</param>
/// <param name="view">The render-target view.</param>
/// <param name="topLeftX">The X position of the left hand side of the viewport.</param>
/// <param name="topLeftY">The Y position of the top of the viewport.</param>
public D3D11Viewport(D3D11Texture3D texture, D3D11RenderTargetView view, float topLeftX, float topLeftY)
: this(texture, view, topLeftX, topLeftY, 0.0f, 1.0f)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="D3D11Viewport"/> struct.
/// </summary>
/// <param name="texture">A 3D texture.</param>
/// <param name="view">The render-target view.</param>
public D3D11Viewport(D3D11Texture3D texture, D3D11RenderTargetView view)
: this(texture, view, 0.0f, 0.0f, 0.0f, 1.0f)
{
}
