147 lines
No EOL
4.4 KiB
C#
147 lines
No EOL
4.4 KiB
C#
#region usings
|
|
|
|
using System.Drawing;
|
|
using System.Drawing.Imaging;
|
|
using OpenTK.Graphics.OpenGL4;
|
|
using SM.OGL.Texture;
|
|
using PixelFormat = System.Drawing.Imaging.PixelFormat;
|
|
|
|
#endregion
|
|
|
|
namespace SM.Base.Textures
|
|
{
|
|
/// <summary>
|
|
/// Texture that can be drawn to an object.
|
|
/// </summary>
|
|
public class Texture : TextureBase
|
|
{
|
|
private int? _height;
|
|
private int? _width;
|
|
|
|
/// <summary>
|
|
/// Decides if the bitmap will automatically dispose itself.
|
|
/// </summary>
|
|
public bool AutoDispose = false;
|
|
|
|
/// <summary>
|
|
/// The texture as bitmap.
|
|
/// </summary>
|
|
public Bitmap Map;
|
|
|
|
/// <summary>
|
|
/// Empty constructor
|
|
/// </summary>
|
|
protected Texture()
|
|
{
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a texture with only the map.
|
|
/// <para>Sets the filter to Linear and WrapMode to Repeat.</para>
|
|
/// </summary>
|
|
/// <param name="map">The map</param>
|
|
public Texture(Bitmap map) : this(map, TextureMinFilter.Linear, TextureWrapMode.Repeat)
|
|
{
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates the texture.
|
|
/// </summary>
|
|
/// <param name="map">The texture map</param>
|
|
/// <param name="filter">The filter</param>
|
|
/// <param name="wrapMode">The wrap mode</param>
|
|
public Texture(Bitmap map, TextureMinFilter filter, TextureWrapMode wrapMode)
|
|
{
|
|
Map = map;
|
|
|
|
Aspect = (float) map.Width / map.Height;
|
|
|
|
Filter = filter;
|
|
WrapMode = wrapMode;
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public override int Width
|
|
{
|
|
get => _width ?? Map.Width;
|
|
protected set => _width = value;
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public override int Height
|
|
{
|
|
get => _height ?? Map.Height;
|
|
protected set => _height = value;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Aspect ratio of Width and Height of the texture
|
|
/// </summary>
|
|
public float Aspect { get; }
|
|
|
|
|
|
/// <inheritdoc />
|
|
public override void Compile()
|
|
{
|
|
base.Compile();
|
|
|
|
_id = GenerateTexture(Map, Filter, WrapMode, AutoDispose);
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public override void Dispose()
|
|
{
|
|
base.Dispose();
|
|
|
|
GL.DeleteTexture(this);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Generates a OpenGL-texture.
|
|
/// </summary>
|
|
/// <param name="map">The texture as bitmap</param>
|
|
/// <param name="filter">The filter</param>
|
|
/// <param name="wrapMode">The wrap mode</param>
|
|
/// <param name="dispose">Auto dispose of the bitmap? Default: false</param>
|
|
/// <returns></returns>
|
|
public static int GenerateTexture(Bitmap map, TextureMinFilter filter, TextureWrapMode wrapMode,
|
|
bool dispose = false)
|
|
{
|
|
var id = GL.GenTexture();
|
|
GL.BindTexture(TextureTarget.Texture2D, id);
|
|
|
|
var data = map.LockBits(new Rectangle(0, 0, map.Width, map.Height), ImageLockMode.ReadOnly,
|
|
map.PixelFormat);
|
|
|
|
var transparenz = map.PixelFormat == PixelFormat.Format32bppArgb;
|
|
|
|
GL.TexImage2D(TextureTarget.Texture2D, 0,
|
|
transparenz ? PixelInternalFormat.Rgba : PixelInternalFormat.Rgb,
|
|
data.Width, data.Height, 0,
|
|
transparenz ? OpenTK.Graphics.OpenGL4.PixelFormat.Bgra : OpenTK.Graphics.OpenGL4.PixelFormat.Bgr,
|
|
PixelType.UnsignedByte, data.Scan0);
|
|
|
|
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int) filter);
|
|
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int) filter);
|
|
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int) wrapMode);
|
|
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int) wrapMode);
|
|
|
|
GL.GenerateMipmap(GenerateMipmapTarget.Texture2D);
|
|
|
|
GL.BindTexture(TextureTarget.Texture2D, 0);
|
|
map.UnlockBits(data);
|
|
|
|
if (dispose) map.Dispose();
|
|
|
|
return id;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Converts a bitmap to a texture.
|
|
/// </summary>
|
|
public static implicit operator Texture(Bitmap map)
|
|
{
|
|
return new Texture(map);
|
|
}
|
|
}
|
|
} |