private static ITexture CreaterCheckerTex()
{
var black = Color4.Black;
var white = Color4.White;
var data = new Color4[2, 2];
data[0, 0] = black;
data[0, 1] = white;
data[1, 0] = white;
data[1, 1] = black;
var tex = new Texture2dGL();
tex.LoadPixels(data, 4, true);
tex.Filter = TextureFilterMode.Nearest;
return(tex);
}
public ITexture2D GetIBLTexture(string path)
{
FreeImageAPI.FREE_IMAGE_FORMAT type = FreeImageAPI.FreeImage.GetFileType(path, 0);
FreeImageAPI.FIBITMAP bitmap = FreeImageAPI.FreeImage.Load(type, path, FreeImageAPI.FREE_IMAGE_LOAD_FLAGS.DEFAULT);
//FreeImageAPI.FIBITMAP convert = FreeImageAPI.FreeImage.ToneMapping(bitmap, FreeImageAPI.FREE_IMAGE_TMO.FITMO_DRAGO03, 0, 0);
FreeImageAPI.FIBITMAP convert = FreeImageAPI.FreeImage.ToneMapping(bitmap, FreeImageAPI.FREE_IMAGE_TMO.FITMO_REINHARD05, 0, 0);
if (bitmap.IsNull)
{
return(null);
}
uint width = FreeImageAPI.FreeImage.GetWidth(convert);
uint height = FreeImageAPI.FreeImage.GetHeight(convert);
int channelNo = 3;
byte[] imgData = new byte[width * height * channelNo];
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
int idx = i * (int)width + j;
FreeImageAPI.RGBQUAD color = new FreeImageAPI.RGBQUAD();
int byteIdx = idx * channelNo;
byteIdx -= 1;
bool pSuccess = FreeImageAPI.FreeImage.GetPixelColor(convert, (uint)j, (uint)i, out color);
Color nColor = color.Color;
imgData[byteIdx + 1] = color.rgbRed;
imgData[byteIdx + 2] = color.rgbGreen;
imgData[byteIdx + 3] = color.rgbBlue;
if (!pSuccess)
{
return(null);
}
}
}
Texture2dGL text = Texture2dGL.Create((int)width, (int)height);
IntPtr ptr = Marshal.UnsafeAddrOfPinnedArrayElement(imgData, 0);
text.LoadPixels(ptr, (int)width, (int)height, OpenTK.Graphics.OpenGL4.PixelInternalFormat.Rgb8, OpenTK.Graphics.OpenGL4.PixelFormat.Rgb, OpenTK.Graphics.OpenGL4.PixelType.UnsignedByte);
return(text);
}
private ITexture getTextureFromResource(Bitmap bitmap)
{
var texture = new Texture2dGL()
{
Filter = TextureFilterMode.Mipmap
};
texture.Activate();
//todo: 16bit channels
using (Bitmap bmp = new Bitmap(bitmap))
{
bmp.RotateFlip(RotateFlipType.RotateNoneFlipY);
var bmpData = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), SysDraw.ImageLockMode.ReadOnly, bmp.PixelFormat);
var internalFormat = SelectInternalPixelFormat(bmp.PixelFormat);
var inputPixelFormat = SelectPixelFormat(bmp.PixelFormat);
texture.LoadPixels(bmpData.Scan0, bmpData.Width, bmpData.Height, internalFormat, inputPixelFormat, PixelType.UnsignedByte);
bmp.UnlockBits(bmpData);
}
texture.Deactivate();
return(texture);
}
