static int LoadTexture(string filename)
{
if (String.IsNullOrEmpty(filename))
{
throw new ArgumentException(filename);
}
int id = GL.GenTexture();
GL.BindTexture(TextureTarget.Texture2D, id);
// We will not upload mipmaps, so disable mipmapping (otherwise the texture will not appear).
// We can use GL.GenerateMipmaps() or GL.Ext.GenerateMipmaps() to create
// mipmaps automatically. In that case, use TextureMinFilter.LinearMipmapLinear to enable them.
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(filename);
BitmapData bmp_data = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, bmp_data.Width, bmp_data.Height, 0,
OpenTK.Graphics.OpenGL.PixelFormat.Bgra, PixelType.UnsignedByte, bmp_data.Scan0);
bmp.UnlockBits(bmp_data);
return(id);
}
public GLTextureHandle CreateTexture()
{
var texture = MacGL.GenTexture();
AddContextObject(new TextureDisposable(texture));
return(new GLTextureHandle(texture));
}
/// <summary>
/// Constructs a new instance.
/// </summary>
/// <param name="width">The width of the backing store in pixels.</param>
/// <param name="height">The height of the backing store in pixels.</param>
public TextRenderer(int width, int height)
{
if (width <= 0)
{
throw new ArgumentOutOfRangeException("width");
}
if (height <= 0)
{
throw new ArgumentOutOfRangeException("height ");
}
if (GraphicsContext.CurrentContext == null)
{
throw new InvalidOperationException("No GraphicsContext is current on the calling thread.");
}
bmp = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
gfx = Graphics.FromImage(bmp);
gfx.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
texture = GL.GenTexture();
GL.BindTexture(TextureTarget.Texture2D, texture);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, width, height, 0,
PixelFormat.Rgba, PixelType.UnsignedByte, IntPtr.Zero);
}
public static int loadCubeMap()
{
int texID = GL.GenTexture();
GL.ActiveTexture(TextureUnit.Texture0);
GL.BindTexture(TextureTarget.TextureCubeMap, texID);
var cubeMapTextures = loadCubeMapTextures();
foreach (var dictValues in cubeMapTextures)
{
var target = TextureTarget.Texture2D;
switch (dictValues.Key)
{
case EnumFacing.NORTH:
target = TextureTarget.TextureCubeMapNegativeZ;
break;
case EnumFacing.SOUTH:
target = TextureTarget.TextureCubeMapPositiveZ;
break;
case EnumFacing.EAST:
target = TextureTarget.TextureCubeMapPositiveX;
break;
case EnumFacing.WEST:
target = TextureTarget.TextureCubeMapNegativeX;
break;
case EnumFacing.UP:
target = TextureTarget.TextureCubeMapPositiveY;
break;
case EnumFacing.DOWN:
target = TextureTarget.TextureCubeMapNegativeY;
break;
}
var bmp = (Bitmap)dictValues.Value.Clone();
var size = bmp.Size;
BitmapData data = bmp.LockBits(new Rectangle(0, 0, size.Width, size.Height),
ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
GL.TexImage2D(target, 0, PixelInternalFormat.Rgba, data.Width, data.Height, 0, PixelFormat.Bgra,
PixelType.UnsignedByte, data.Scan0);
bmp.UnlockBits(data);
}
GL.TexParameter(TextureTarget.TextureCubeMap, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
GL.TexParameter(TextureTarget.TextureCubeMap, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
GL.TexParameter(TextureTarget.TextureCubeMap, TextureParameterName.TextureWrapS, (int)TextureWrapMode.ClampToEdge);
GL.TexParameter(TextureTarget.TextureCubeMap, TextureParameterName.TextureWrapT, (int)TextureWrapMode.ClampToEdge);
return(texID);
}
public static int loadTexture(Bitmap textureMap, bool smooth)
{
GL.Hint(HintTarget.PerspectiveCorrectionHint, HintMode.Nicest);
int texID = GL.GenTexture();
textures.Add(texID);
GL.BindTexture(TextureTarget.Texture2D, texID);
BitmapData data = textureMap.LockBits(new Rectangle(0, 0, textureMap.Width, textureMap.Height),
ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppPArgb);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, data.Width, data.Height, 0,
OpenTK.Graphics.OpenGL.PixelFormat.Bgra, PixelType.UnsignedByte, data.Scan0);
textureMap.UnlockBits(data);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter,
(int)(smooth ? TextureMinFilter.Linear : TextureMinFilter.Nearest));
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter,
(int)(smooth ? TextureMagFilter.Linear : TextureMagFilter.Nearest));
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS,
(int)TextureWrapMode.ClampToEdge);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT,
(int)TextureWrapMode.ClampToEdge);
return(texID);
}
public GLTextureHandle CreateTexture()
{
int texture = GL.GenTexture();
AddContextObject(new TextureDisposable(texture));
return((GLTextureHandle)texture);
}
protected override COGLTexture _CreateTexture(Size dataSize)
{
if (dataSize.Width < 0)
{
return(new COGLTexture(0, dataSize));
}
COGLTexture texture = new COGLTexture(GL.GenTexture(), dataSize, _CheckForNextPowerOf2(dataSize.Width), _CheckForNextPowerOf2(dataSize.Height));
return(texture);
}
public static TextureHandle Create(Size <Pixels> size, IOSurface surface)
{
GL.ActiveTexture(TextureUnit.Texture0);
var texture = new TextureHandle(GL.GenTexture());
GL.BindTexture(TextureTarget.TextureRectangle, texture);
GL.TexParameter(TextureTarget.TextureRectangle, TextureParameterName.TextureMagFilter, (int)(TextureMagFilter.Nearest));
GL.TexParameter(TextureTarget.TextureRectangle, TextureParameterName.TextureMinFilter, (int)(TextureMinFilter.Linear));
GL.TexParameter(TextureTarget.TextureRectangle, TextureParameterName.TextureWrapS, (int)(TextureWrapMode.ClampToEdge));
GL.TexParameter(TextureTarget.TextureRectangle, TextureParameterName.TextureWrapT, (int)(TextureWrapMode.ClampToEdge));
Resize(texture, size, surface);
return(texture);
}
