Texture maps are a standard way of adding fine surface detail without adding more geometry. Indigo supports texture maps in many file formats, which are listed here.
An example Phong material with a wood texture applied.
Supported texture formats:
| JPEG | .JPG .JPEG | Greyscale, RGB and CMYK are supported. |
| PNG | .PNG | Greyscale, greyscale with alpha, RGB and RGBA are supported. 8 bits per channel and 16 bits per channel supported. |
| Truevision Targa | .TGA | Greyscale (8 bits per pixel) and RGB (24 bits per pixel) are supported. |
| Windows Bitmap | .BMP | Greyscale (8 bits per pixel) and RGB (24 bits per pixel) are supported. Compressed BMP files are not supported. |
| OpenEXR | .EXR | 16 bits per channel and 32 bits per channel are supported. |
| TIFF | .TIF .TIFF | Greyscale, RGB, RGBA are supported. 8 bits per channel and 16 bits per channel supported. |
| GIF | .GIF | Supported. Gif animation is not supported. |
| RGBE | .HDR | Supported. |
Additional options:
| UV set index | Index of the set of uv coordinates used for texture maps. Usually generated by your 3D modelling package. |
| Path | Path to the texture map on disk. The path must either be absolute, or relative to the scene's working directory. |
| Gamma (exponent) | Used for converting non-linear RGB values (e.g. sRGB) to linear intensity values. A typical value is 2.2, corresponding to the sRGB standard. |