#region License
#endregion
#region Using Statements
using System;
#endregion
namespace Microsoft.Xna.Framework.Graphics
{
/// <summary>
/// Represents a texture cube that can be used as a render target.
/// </summary>
public class RenderTargetCube : TextureCube, IRenderTarget
{
#region Public Properties
/// <summary>
/// Gets the depth-stencil buffer format of this render target.
/// </summary>
/// <value>The format of the depth-stencil buffer.</value>
public DepthFormat DepthStencilFormat
{
get;
private set;
}
/// <summary>
/// Gets the number of multisample locations.
/// </summary>
/// <value>The number of multisample locations.</value>
public int MultiSampleCount
{
get;
private set;
}
/// <summary>
/// Gets the usage mode of this render target.
/// </summary>
/// <value>The usage mode of the render target.</value>
public RenderTargetUsage RenderTargetUsage
{
get;
private set;
}
public bool IsContentLost
{
get
{
return false;
}
}
#endregion
#region IRenderTarget Properties
/// <inheritdoc/>
int IRenderTarget.Width
{
get
{
return Size;
}
}
/// <inheritdoc/>
int IRenderTarget.Height
{
get
{
return Size;
}
}
/// <inheritdoc/>
IGLRenderbuffer IRenderTarget.DepthStencilBuffer
{
get
{
return glDepthStencilBuffer;
}
}
/// <inheritdoc/>
IGLRenderbuffer IRenderTarget.ColorBuffer
{
get
{
return glColorBuffer;
}
}
#endregion
#region Private Variables
private IGLRenderbuffer glDepthStencilBuffer;
private IGLRenderbuffer glColorBuffer;
#endregion
#region ContentLost Event
#pragma warning disable 0067
public event EventHandler<EventArgs> ContentLost;
#pragma warning restore 0067
#endregion
#region Public Constructors
/// <summary>
/// Initializes a new instance of the <see cref="RenderTargetCube"/> class.
/// </summary>
/// <param name="graphicsDevice">The graphics device.</param>
/// <param name="size">The width and height of a texture cube face in pixels.</param>
/// <param name="mipMap">
/// <see langword="true"/> to generate a full mipmap chain; otherwise <see langword="false"/>.
/// </param>
/// <param name="preferredFormat">The preferred format of the surface.</param>
/// <param name="preferredDepthFormat">The preferred format of the depth-stencil buffer.</param>
public RenderTargetCube(
GraphicsDevice graphicsDevice,
int size,
bool mipMap,
SurfaceFormat preferredFormat,
DepthFormat preferredDepthFormat
) : this(
graphicsDevice,
size,
mipMap,
preferredFormat,
preferredDepthFormat,
0,
RenderTargetUsage.DiscardContents
) {
}
/// <summary>
/// Initializes a new instance of the <see cref="RenderTargetCube"/> class.
/// </summary>
/// <param name="graphicsDevice">The graphics device.</param>
/// <param name="size">The width and height of a texture cube face in pixels.</param>
/// <param name="mipMap">
/// <see langword="true"/> to generate a full mipmap chain; otherwise <see langword="false"/>.
/// </param>
/// <param name="preferredFormat">The preferred format of the surface.</param>
/// <param name="preferredDepthFormat">The preferred format of the depth-stencil buffer.</param>
/// <param name="preferredMultiSampleCount">The preferred number of multisample locations.</param>
/// <param name="usage">The usage mode of the render target.</param>
public RenderTargetCube(
GraphicsDevice graphicsDevice,
int size,
bool mipMap,
SurfaceFormat preferredFormat,
DepthFormat preferredDepthFormat,
int preferredMultiSampleCount,
RenderTargetUsage usage
) : base(
graphicsDevice,
size,
mipMap,
preferredFormat
) {
DepthStencilFormat = preferredDepthFormat;
MultiSampleCount = Math.Min(
MathHelper.ClosestMSAAPower(preferredMultiSampleCount),
graphicsDevice.GLDevice.MaxMultiSampleCount
);
RenderTargetUsage = usage;
if (MultiSampleCount > 0)
{
glColorBuffer = graphicsDevice.GLDevice.GenRenderbuffer(
size,
size,
Format,
MultiSampleCount
);
}
if (preferredDepthFormat == DepthFormat.None)
{
return;
}
glDepthStencilBuffer = graphicsDevice.GLDevice.GenRenderbuffer(
size,
size,
preferredDepthFormat,
MultiSampleCount
);
}
#endregion
#region Protected Dispose Method
/// <summary>
/// Releases the unmanaged resources used by an instance of the
/// <see cref="RenderTargetCube"/> class and optionally releases the managed
/// resources.
/// </summary>
/// <param name="disposing">
/// <see langword="true"/> to release both managed and unmanaged resources;
/// <see langword="false"/> to release only unmanaged resources.
/// </param>
protected override void Dispose(bool disposing)
{
if (!IsDisposed)
{
if (glDepthStencilBuffer != null)
{
GraphicsDevice.GLDevice.AddDisposeRenderbuffer(glDepthStencilBuffer);
}
base.Dispose(disposing);
}
}
#endregion
}
}
