public override void WriteToStream(BinaryWriter writer, GameAsset asset)
{
Texture texture = (Texture)asset;
int sizeInBytes = TextureHelper.GetSinglePixelSize(texture.PixelInternalFormat, texture.PixelType) * texture.Size.X * texture.Size.Y;
GL.BindTexture(TextureTarget.Texture2D, texture.Handle);
byte[] textureData = new byte[sizeInBytes];
GL.GetTexImage(TextureTarget.Texture2D, 0, texture.PixelFormat, texture.PixelType, textureData);
GL.BindTexture(TextureTarget.Texture2D, 0);
//write to stream
writer.Write(texture.Name);
writer.Write((int)texture.MinFilter);
writer.Write((int)texture.MagFilter);
writer.Write((int)texture.WrapModeS);
writer.Write((int)texture.WrapModeT);
writer.Write((int)texture.PixelInternalFormat);
writer.Write((int)texture.PixelFormat);
writer.Write((int)texture.PixelType);
writer.Write(texture.Size.X);
writer.Write(texture.Size.Y);
writer.Write(texture.IsResident);
//buffer
writer.Write(sizeInBytes);
writer.Write(textureData);
}
public static Texture FromPointer(string name, int width, int height, IntPtr data,
PixelInternalFormat internalFormat = PixelInternalFormat.Rgba,
PixelFormat format = PixelFormat.Rgba,
PixelType pixelType = PixelType.UnsignedByte,
string id = null)
{
Texture texture = new Texture(name, id);
//copy pixel array
int singlePixelSize = TextureHelper.GetSinglePixelSize(internalFormat, pixelType);
texture.rawData = new byte[width * height * singlePixelSize];
Marshal.Copy(data, texture.rawData, 0, width * height * singlePixelSize);
texture.pixelInternalFormat = internalFormat;
texture.pixelFormat = format;
texture.pixelType = pixelType;
texture.handle = GL.GenTexture();
GL.BindTexture(TextureTarget.Texture2D, texture.handle);
GL.TexImage2D(TextureTarget.Texture2D, 0, internalFormat, width, height, 0, format, pixelType, data);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)TextureWrapMode.ClampToEdge);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)TextureWrapMode.ClampToEdge);
GL.ObjectLabel(ObjectLabelIdentifier.Texture, texture.handle, name.Length, name);
GL.BindTexture(TextureTarget.Texture2D, 0);
texture.Size = new Vector2i(width, height);
return(texture);
}
public static Texture Deserialize(BinaryReader reader)
{
//read name
string name = reader.ReadString();
//read id
string id = reader.ReadString();
//read texture info
TextureMinFilter minFilter = (TextureMinFilter)reader.ReadInt32();
TextureMagFilter magFilter = (TextureMagFilter)reader.ReadInt32();
TextureWrapMode wrapS = (TextureWrapMode)reader.ReadInt32();
TextureWrapMode wrapT = (TextureWrapMode)reader.ReadInt32();
//read pixel info
PixelInternalFormat pixelInternalFormat = (PixelInternalFormat)reader.ReadInt32();
PixelFormat pixelFormat = (PixelFormat)reader.ReadInt32();
PixelType pixelType = (PixelType)reader.ReadInt32();
//read width and height
Vector2i size = new Vector2i(reader.ReadInt32(), reader.ReadInt32());
//read pixels
byte[] data = reader.ReadBytes(size.X * size.Y * TextureHelper.GetSinglePixelSize(pixelInternalFormat, pixelType));
Texture tex = FromArray(name,
size.X, size.Y,
data,
pixelInternalFormat, pixelFormat,
pixelType, id: id);
tex.SetMinFilter(minFilter);
tex.SetMagFilter(magFilter);
tex.SetWrapS(wrapS);
tex.SetWrapT(wrapT);
return(tex);
}
