public void Load()
{
Stream imageStreamSource = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read);
PngBitmapDecoder decoder = new PngBitmapDecoder(imageStreamSource, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default);
var bitmapSource = decoder.Frames[0];
var bitsPerPixel = bitmapSource.Format.BitsPerPixel;
this.format = BppToPixelFormat(bitsPerPixel);
this.bitmap = BitmapFromSource(bitmapSource);
this.HeightInPixels = bitmapSource.PixelHeight;
this.WidthInPixels = bitmapSource.PixelWidth;
this.Loaded = true;
}
public void SetTexturePixels(ulong texture, byte[] pixels, int pitch, PixelFormat format)
{
// Convert from the graphics API independent pixel format to the OpenGL specific one.
OpenGL.PixelFormat openglformat = 0;
switch (format)
{
case PixelFormat.RGBA: openglformat = OpenGL.PixelFormat.Rgba; break;
case PixelFormat.BGRA: openglformat = OpenGL.PixelFormat.Bgra; break;
}
Gl.BindTexture(TextureTarget.Texture2d, (uint)texture);
// Upload the new pixel data to VRAM.
Gl.TexImage2D(TextureTarget.Texture2d, 0, InternalFormat.Rgba8, pitch, (pixels.Length >> 2) / pitch, 0, openglformat, PixelType.UnsignedByte, pixels);
}
public void SubImage(IntPtr Pixels, int X, int Y, int Z, int W, int H, int D,
GLPixelFormat PFormat = GLPixelFormat.Rgba, PixelType PType = PixelType.UnsignedByte, int Level = 0)
{
if (Z == 0 && D == 0)
{
#if DEBUG
if (IsCubeMap)
{
throw new Exception("Invalid Z/D parameter for cubemap");
}
#endif
Gl.TextureSubImage2D(ID, Level, X, Y, W, H, PFormat, PType, Pixels);
}
else
{
Gl.TextureSubImage3D(ID, Level, X, Y, Z, W, H, D, PFormat, PType, Pixels);
}
if (MipLevels > 1)
{
GenerateMipmap();
}
}
