|
|
#region License
|
|
|
/* FNA - XNA4 Reimplementation for Desktop Platforms
|
|
|
* Copyright 2009-2020 Ethan Lee and the MonoGame Team
|
|
|
*
|
|
|
* Released under the Microsoft Public License.
|
|
|
* See LICENSE for details.
|
|
|
*/
|
|
|
#endregion
|
|
|
|
|
|
namespace Microsoft.Xna.Framework.Graphics
|
|
|
{
|
|
|
public struct VertexBufferBinding
|
|
|
{
|
|
|
#region Public Properties
|
|
|
|
|
|
/// <summary>
|
|
|
/// Gets the instance frequency. A value of 0 means no instancing.
|
|
|
/// </summary>
|
|
|
public int InstanceFrequency
|
|
|
{
|
|
|
get
|
|
|
{
|
|
|
return instanceFrequency;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// Gets the vertex buffer.
|
|
|
/// </summary>
|
|
|
public VertexBuffer VertexBuffer
|
|
|
{
|
|
|
get
|
|
|
{
|
|
|
return vertexBuffer;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// Gets the offset in bytes from the beginning of the vertex buffer to the first vertex to use.
|
|
|
/// </summary>
|
|
|
public int VertexOffset
|
|
|
{
|
|
|
get
|
|
|
{
|
|
|
return vertexOffset;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
#endregion
|
|
|
|
|
|
#region Private Variables
|
|
|
|
|
|
private VertexBuffer vertexBuffer;
|
|
|
private int vertexOffset;
|
|
|
private int instanceFrequency;
|
|
|
|
|
|
#endregion
|
|
|
|
|
|
#region Internal Static Variables
|
|
|
|
|
|
/// <summary>
|
|
|
/// A null vertex buffer binding for unused vertex buffer slots.
|
|
|
/// </summary>
|
|
|
internal static readonly VertexBufferBinding None = new VertexBufferBinding(null);
|
|
|
|
|
|
#endregion
|
|
|
|
|
|
#region Public Constructors
|
|
|
|
|
|
/// <summary>
|
|
|
/// Creates an instance of VertexBufferBinding.
|
|
|
/// </summary>
|
|
|
/// <param name="vertexBuffer">The vertex buffer to bind.</param>
|
|
|
public VertexBufferBinding(VertexBuffer vertexBuffer)
|
|
|
{
|
|
|
this.vertexBuffer = vertexBuffer;
|
|
|
vertexOffset = 0;
|
|
|
instanceFrequency = 0;
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// Creates an instance of VertexBufferBinding.
|
|
|
/// </summary>
|
|
|
/// <param name="vertexBuffer">The vertex buffer to bind.</param>
|
|
|
/// <param name="vertexOffset">The offset in bytes to the first vertex to use.</param>
|
|
|
public VertexBufferBinding(VertexBuffer vertexBuffer, int vertexOffset)
|
|
|
{
|
|
|
this.vertexBuffer = vertexBuffer;
|
|
|
this.vertexOffset = vertexOffset;
|
|
|
instanceFrequency = 0;
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// Creates an instance of VertexBufferBinding.
|
|
|
/// </summary>
|
|
|
/// <param name="vertexBuffer">The vertex buffer to bind.</param>
|
|
|
/// <param name="vertexOffset">The offset in bytes to the first vertex to use.</param>
|
|
|
/// <param name="instanceFrequency">Number of instances to draw for each draw call. Use 0 if not using instanced drawing.</param>
|
|
|
public VertexBufferBinding(VertexBuffer vertexBuffer, int vertexOffset, int instanceFrequency)
|
|
|
{
|
|
|
this.vertexBuffer = vertexBuffer;
|
|
|
this.vertexOffset = vertexOffset;
|
|
|
this.instanceFrequency = instanceFrequency;
|
|
|
}
|
|
|
|
|
|
#endregion
|
|
|
|
|
|
#region Implicit Operators
|
|
|
|
|
|
public static implicit operator VertexBufferBinding(VertexBuffer buffer)
|
|
|
{
|
|
|
return new VertexBufferBinding(buffer);
|
|
|
}
|
|
|
|
|
|
#endregion
|
|
|
}
|
|
|
}
|
|
|
|
