#region License
#endregion
#region Using Statements
using System;
#endregion
namespace Microsoft.Xna.Framework.Graphics
{
public abstract class Texture : GraphicsResource
{
#region Public Properties
public SurfaceFormat Format
{
get;
protected set;
}
public int LevelCount
{
get;
protected set;
}
#endregion
#region Internal Variables
internal IGLTexture texture;
#endregion
#region Protected Dispose Method
protected override void Dispose(bool disposing)
{
if (!IsDisposed)
{
GraphicsDevice.GLDevice.AddDisposeTexture(texture);
}
base.Dispose(disposing);
}
#endregion
#region Internal Context Reset Method
internal protected override void GraphicsDeviceResetting()
{
}
#endregion
#region Static SurfaceFormat Size Method
internal static int GetFormatSize(SurfaceFormat format)
{
switch (format)
{
case SurfaceFormat.Dxt1:
return 8;
case SurfaceFormat.Dxt3:
case SurfaceFormat.Dxt5:
return 16;
case SurfaceFormat.Alpha8:
return 1;
case SurfaceFormat.Bgr565:
case SurfaceFormat.Bgra4444:
case SurfaceFormat.Bgra5551:
case SurfaceFormat.HalfSingle:
case SurfaceFormat.NormalizedByte2:
return 2;
case SurfaceFormat.Color:
case SurfaceFormat.Single:
case SurfaceFormat.Rg32:
case SurfaceFormat.HalfVector2:
case SurfaceFormat.NormalizedByte4:
case SurfaceFormat.Rgba1010102:
return 4;
case SurfaceFormat.HalfVector4:
case SurfaceFormat.Rgba64:
case SurfaceFormat.Vector2:
return 8;
case SurfaceFormat.Vector4:
return 16;
default:
throw new ArgumentException("Should be a value defined in SurfaceFormat", "Format");
}
}
#endregion
#region Static Mipmap Level Calculator
internal static int CalculateMipLevels(
int width,
int height = 0,
int depth = 0
) {
int levels = 1;
for (
int size = Math.Max(Math.Max(width, height), depth);
size > 1;
levels += 1
) {
size /= 2;
}
return levels;
}
#endregion
}
}
