public static Texture2D CreateTexture2D(BRTI_Texture tex, int surfaceIndex = 0)
{
bool compressedFormatWithMipMaps = SFGraphics.GLObjects.Textures.TextureFormats.TextureFormatTools.IsCompressed(tex.pixelInternalFormat);
if (compressedFormatWithMipMaps)
{
if (tex.mipMapCount > 1)
{
Texture2D texture = new Texture2D();
texture.LoadImageData(tex.width, tex.height, tex.mipmaps,
(InternalFormat)tex.pixelInternalFormat);
return(texture);
}
else
{
// Only load the first level and generate the rest.
Texture2D texture = new Texture2D();
texture.LoadImageData(tex.width, tex.height, tex.mipmaps[0], (InternalFormat)tex.pixelInternalFormat);
return(texture);
}
}
else
{
// Uncompressed.
Texture2D texture = new Texture2D();
texture.LoadImageData(tex.width, tex.height, tex.mipmaps[0],
new TextureFormatUncompressed(tex.pixelInternalFormat, tex.pixelFormat, tex.pixelType));
return(texture);
}
}
public static int getImageSize(BRTI_Texture t)
{
switch (t.type)
{
case PixelInternalFormat.CompressedRgbaS3tcDxt1Ext:
case PixelInternalFormat.CompressedSrgbAlphaS3tcDxt1Ext:
case PixelInternalFormat.CompressedRedRgtc1:
case PixelInternalFormat.CompressedSignedRedRgtc1:
return(t.width * t.height / 2);
case PixelInternalFormat.CompressedRgbaS3tcDxt3Ext:
case PixelInternalFormat.CompressedSrgbAlphaS3tcDxt3Ext:
case PixelInternalFormat.CompressedRgbaS3tcDxt5Ext:
case PixelInternalFormat.CompressedSrgbAlphaS3tcDxt5Ext:
case PixelInternalFormat.CompressedSignedRgRgtc2:
case PixelInternalFormat.CompressedRgRgtc2:
return(t.width * t.height);
case PixelInternalFormat.Rgba:
return(t.data.Length);
default:
return(t.data.Length);
}
}
public unsafe void ExportAsImage(BRTI_Texture t, int id, string path)
{
Bitmap bitmap = new Bitmap(t.width, t.height);
System.Drawing.Imaging.BitmapData bitmapData = bitmap.LockBits(new Rectangle(0, 0, t.width, t.height), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
GL.BindTexture(TextureTarget.Texture2D, id);
GL.GetTexImage(TextureTarget.Texture2D, 0, OpenTK.Graphics.OpenGL.PixelFormat.Bgra, PixelType.UnsignedByte, bitmapData.Scan0);
bitmap.UnlockBits(bitmapData);
bitmap.Save(path);
}
public static int loadImage(BRTI_Texture t)
{
int texID = GL.GenTexture();
GL.BindTexture(TextureTarget.Texture2D, texID);
if (t.type != PixelInternalFormat.Rgba)
{
GL.CompressedTexImage2D <byte>(TextureTarget.Texture2D, 0, t.type,
t.width, t.height, 0, getImageSize(t), t.data);
//Debug.WriteLine(GL.GetError());
}
else
{
GL.TexImage2D <byte>(TextureTarget.Texture2D, 0, t.type, t.width, t.height, 0,
t.utype, PixelType.UnsignedByte, t.data);
}
GL.GenerateMipmap(GenerateMipmapTarget.Texture2D);
return(texID);
}
private void LoadFormats(BRTI_Texture texture, uint format, int mipLevel, int width, int height)
{
switch (format >> 8)
{
case ((uint)Formats.BNTXImageFormat.IMAGE_FORMAT_BC1):
texture.pixelInternalFormat = PixelInternalFormat.CompressedRgbaS3tcDxt1Ext;
break;
case ((uint)Formats.BNTXImageFormat.IMAGE_FORMAT_BC2):
if (DataType == (byte)Formats.BNTXImageTypes.UNORM)
{
texture.pixelInternalFormat = PixelInternalFormat.CompressedRgbaS3tcDxt3Ext;
}
else if (DataType == (byte)Formats.BNTXImageTypes.SRGB)
{
texture.pixelInternalFormat = PixelInternalFormat.CompressedSrgbAlphaS3tcDxt3Ext;
}
else
{
throw new Exception("Unsupported data type for BC2");
}
break;
case ((uint)Formats.BNTXImageFormat.IMAGE_FORMAT_BC3):
if (DataType == (byte)Formats.BNTXImageTypes.UNORM)
{
texture.pixelInternalFormat = PixelInternalFormat.CompressedRgbaS3tcDxt5Ext;
}
else if (DataType == (byte)Formats.BNTXImageTypes.SRGB)
{
texture.pixelInternalFormat = PixelInternalFormat.CompressedSrgbAlphaS3tcDxt5Ext;
}
else
{
throw new Exception("Unsupported data type for BC3");
}
break;
case ((uint)Formats.BNTXImageFormat.IMAGE_FORMAT_BC4):
if (DataType == (byte)Formats.BNTXImageTypes.UNORM)
{
texture.pixelInternalFormat = PixelInternalFormat.CompressedRedRgtc1;
}
else if (DataType == (byte)Formats.BNTXImageTypes.SNORM)
{
texture.pixelInternalFormat = PixelInternalFormat.CompressedSignedRedRgtc1;
}
else
{
throw new Exception("Unsupported data type for BC4");
}
break;
case ((uint)Formats.BNTXImageFormat.IMAGE_FORMAT_BC5):
if (DataType == (byte)Formats.BNTXImageTypes.UNORM)
{
texture.pixelInternalFormat = PixelInternalFormat.CompressedRgRgtc2;
}
else if (DataType == (byte)Formats.BNTXImageTypes.SNORM)
{
// texture.pixelInternalFormat = PixelInternalFormat.CompressedRgRgtc2;
byte[] fixBC5 = DDS_Decompress.DecompressBC5(texture.mipmaps[mipLevel], width, height, true);
texture.mipmaps[mipLevel] = fixBC5;
texture.pixelInternalFormat = PixelInternalFormat.Rgba;
texture.pixelFormat = OpenTK.Graphics.OpenGL.PixelFormat.Rgba;
}
else
{
Console.WriteLine("Unsupported data type for BC5");
}
break;
case ((uint)Formats.BNTXImageFormat.IMAGE_FORMAT_BC7):
if (DataType == (byte)Formats.BNTXImageTypes.UNORM || DataType == (byte)Formats.BNTXImageTypes.SRGB)
{
texture.pixelInternalFormat = PixelInternalFormat.CompressedRgbaBptcUnorm;
}
break;
case ((uint)Formats.BNTXImageFormat.IMAGE_FORMAT_R8_G8_B8_A8):
if (DataType == (byte)Formats.BNTXImageTypes.UNORM || DataType == (byte)Formats.BNTXImageTypes.SRGB)
{
texture.pixelInternalFormat = PixelInternalFormat.Rgba;
texture.pixelFormat = OpenTK.Graphics.OpenGL.PixelFormat.Rgba;
}
else
{
throw new Exception("Unsupported data type for R8_G8_B8_A8");
}
break;
}
}
