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);
}
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);
}
/// <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 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);
}
protected override void _WriteDataToTexture(COGLTexture texture, IntPtr data)
{
Debug.Assert(texture.Name > 0);
_ClearTexture(texture);
GL.BindTexture(TextureTarget.Texture2D, texture.Name);
GL.TexSubImage2D(TextureTarget.Texture2D, 0, 0, 0, texture.DataSize.Width, texture.DataSize.Height, PixelFormat.Bgra, PixelType.UnsignedByte, data);
GL.Ext.GenerateMipmap(GenerateMipmapTarget.Texture2D);
GL.BindTexture(TextureTarget.Texture2D, 0);
}
public CTextureRef CopyScreen()
{
//TODO: Check if _W,_H needs to be used or not
Size size = new Size(GetScreenWidth(), GetScreenHeight());
COGLTexture texture = _CreateTexture(size);
GL.BindTexture(TextureTarget.Texture2D, texture.Name);
GL.CopyTexSubImage2D(TextureTarget.Texture2D, 0, 0, 0, 0, 0, size.Width, size.Height); //TODO: Use _X,_Y and _W,_H?
GL.BindTexture(TextureTarget.Texture2D, 0);
return(_GetTextureReference(size, texture));
}
protected override void _DrawTexture(COGLTexture texture, SDrawCoords dc, SColorF color, bool isReflection = false)
{
// Align textures to full pixels to reduce artefacts
dc.Wx1 = (float)Math.Round(dc.Wx1);
dc.Wy1 = (float)Math.Round(dc.Wy1);
dc.Wx2 = (float)Math.Round(dc.Wx2);
dc.Wy2 = (float)Math.Round(dc.Wy2);
GL.BindTexture(TextureTarget.Texture2D, texture.Name);
GL.Enable(EnableCap.Blend);
GL.MatrixMode(MatrixMode.Texture);
GL.PushMatrix();
if (Math.Abs(dc.Rotation) > float.Epsilon)
{
GL.Translate(0.5f, 0.5f, 0);
GL.Rotate(-dc.Rotation, 0f, 0f, 1f);
GL.Translate(-0.5f, -0.5f, 0);
}
GL.Begin(PrimitiveType.Quads);
GL.Color4(color.R, color.G, color.B, color.A * CGraphics.GlobalAlpha);
GL.TexCoord2(dc.Tx1, dc.Ty1);
GL.Vertex3(dc.Wx1, dc.Wy1, dc.Wz);
if (isReflection)
{
GL.Color4(color.R, color.G, color.B, 0);
}
GL.TexCoord2(dc.Tx1, dc.Ty2);
GL.Vertex3(dc.Wx1, dc.Wy2, dc.Wz);
GL.TexCoord2(dc.Tx2, dc.Ty2);
GL.Vertex3(dc.Wx2, dc.Wy2, dc.Wz);
if (isReflection)
{
GL.Color4(color.R, color.G, color.B, color.A * CGraphics.GlobalAlpha);
}
GL.TexCoord2(dc.Tx2, dc.Ty1);
GL.Vertex3(dc.Wx2, dc.Wy1, dc.Wz);
GL.End();
GL.PopMatrix();
GL.Disable(EnableCap.Blend);
GL.BindTexture(TextureTarget.Texture2D, 0);
}
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);
}
public static void Resize(TextureHandle texture, Size <Pixels> size, IOSurface surface)
{
GL.BindTexture(TextureTarget.TextureRectangle, texture);
CGLTexImageIOSurface2D(
CGLContext.CurrentContext.Handle,
(int)TextureTarget.TextureRectangle,
(int)PixelInternalFormat.Rgba,
(int)size.Width,
(int)size.Height,
(int)PixelFormat.Bgra,
(int)PixelType.UnsignedInt8888Reversed,
surface.Handle,
0);
GL.BindTexture(TextureTarget.TextureRectangle, 0);
}
public void CopyScreen(ref CTextureRef textureRef)
{
COGLTexture texture;
//Check for actual texture sizes as it may be downsized compared to OrigSize
if (!_GetTexture(textureRef, out texture) || texture.DataSize.Width != GetScreenWidth() || texture.DataSize.Height != GetScreenHeight())
{
RemoveTexture(ref textureRef);
textureRef = CopyScreen();
}
else
{
GL.BindTexture(TextureTarget.Texture2D, texture.Name);
GL.CopyTexSubImage2D(TextureTarget.Texture2D, 0, 0, 0, 0, 0, GetScreenWidth(), GetScreenHeight());
GL.BindTexture(TextureTarget.Texture2D, 0);
}
}
// Uploads the dirty regions of the backing store to the OpenGL texture.
void UploadBitmap()
{
if (dirty_region != RectangleF.Empty)
{
System.Drawing.Imaging.BitmapData data = bmp.LockBits(dirty_region,
System.Drawing.Imaging.ImageLockMode.ReadOnly,
System.Drawing.Imaging.PixelFormat.Format32bppArgb);
GL.BindTexture(TextureTarget.Texture2D, texture);
GL.TexSubImage2D(TextureTarget.Texture2D, 0,
dirty_region.X, dirty_region.Y, dirty_region.Width, dirty_region.Height,
PixelFormat.Bgra, PixelType.UnsignedByte, data.Scan0);
bmp.UnlockBits(data);
dirty_region = Rectangle.Empty;
}
}
public COGLTexture(int name, Size dataSize, int texWidth = 0, int texHeight = 0) : base(dataSize, new Size(texWidth, texHeight))
{
Name = name;
if (name == 0)
{
return;
}
GL.BindTexture(TextureTarget.Texture2D, Name);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, texWidth, texHeight, 0, PixelFormat.Bgra, PixelType.UnsignedByte, IntPtr.Zero);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)OpenTK.Graphics.TextureWrapMode.ClampToEdge);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)OpenTK.Graphics.TextureWrapMode.ClampToEdge);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.LinearMipmapLinear);
GL.BindTexture(TextureTarget.Texture2D, 0);
}
public void BindTexture(GLTextureTarget target, GLTextureHandle texture)
{
GL.BindTexture((TextureTarget)target, (int)texture);
}
