Access pixel data in TextureData

This is supported by version 23.4 or greater.

Write pixel data

Use the following class to define texture encoders and texture decoder:

var tex = new TextureData(128, 128, PixelFormat.A8R8G8B8);
using (var mapping = tex.MapPixels(PixelMapMode.WriteOnly))
{
    var pixels = mapping.Data;
    var p = 0;
    for(var y = 0; y < 128; y++)
    {
        for (var x = 0; x < 128; x++)
        {
            pixels[p + 0] = 255;//alpha
            pixels[p + 1] = 255;//red
            pixels[p + 2] = 0;//green
            pixels[p + 3] = 0;//blue
            p += 4;//next pixel
        }
    }
}
tex.Save("red.png");//save to png file(Need codec registered)

Transform pixel format

With TransformPixelFormat you can easily change the texture’s pixel format:

var tex = TextureData.FromFile("test.png");
tex.TransformPixelFormat(PixelFormat.G8);//now the texture data only contains green channel in pixel.