Octane Float Texture

Float textures' data is a floating point value that signifies a grayscale value, where 0.00 is darkest and 1.00 is lightest. Ifyou use a color RGB texture, then OctaneRender® converts the image to grayscale.

There are some parameters where full color data is not used (or useful). If you load a full-color image, it takes much more memory in the GPU than a grayscale image, even you want just the grayscale data. Since memory management is very critical for GPU rendering, the Float Image type loads a full-color texture, but it interprets the image as a grayscale image and uses less VRAM. If you need the full-color data, then use the Image data type (Normal maps, Diffuse maps).