public Texture2D(int width, int height, bool hasMipMaps, SurfaceFormat format) : this(true)
{
Width = width;
Height = height;
Format = format;
Format.GetGLFormat(out glInternalFormat, out glFormat, out glType);
LevelCount = hasMipMaps ? CalculateMipLevels(width, height) : 1;
currentLevels = hasMipMaps ? (LevelCount - 1) : 0;
//Bind the new TextureD
GLBind.Trash();
GLBind.BindTexture(4, GL.GL_TEXTURE_2D, ID);
//initialise the texture data
var imageSize = 0;
Dxt1 = format == SurfaceFormat.Dxt1;
if (glFormat == GL.GL_NUM_COMPRESSED_TEXTURE_FORMATS)
{
if (GLExtensions.S3TC)
{
switch (Format)
{
case SurfaceFormat.Dxt1:
case SurfaceFormat.Dxt3:
case SurfaceFormat.Dxt5:
imageSize = ((Width + 3) / 4) * ((Height + 3) / 4) * format.GetSize();
break;
default:
throw new NotSupportedException();
}
GL.CompressedTexImage2D(GL.GL_TEXTURE_2D, 0, glInternalFormat,
Width, Height, 0,
imageSize, IntPtr.Zero);
}
else
{
GL.TexImage2D(GL.GL_TEXTURE_2D, 0,
GL.GL_RGBA,
Width, Height, 0,
GL.GL_BGRA, GL.GL_UNSIGNED_BYTE, IntPtr.Zero);
}
}
else
{
GL.TexImage2D(GL.GL_TEXTURE_2D, 0,
glInternalFormat,
Width, Height, 0,
glFormat, glType, IntPtr.Zero);
}
//enable filtering
GL.TexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER, GL.GL_LINEAR);
GL.TexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR);
}
public void TrashGLState()
{
GLBind.Trash();
RenderState.Instance.Trash();
}
public void TrashGLState()
{
GLBind.Trash();
RenderContext.Instance.Trash();
}