| Constant | Value | Description |
| siRenderChannelUnknownType |
0 |
Unknown type. Only used as a return value in the case of an error. |
| siRenderChannelColorType |
1 |
Data is interpreted as a pre-multiplied RGB color image with an optional alpha channel. If no alpha is provided, the image is treated as fully opaque. |
| siRenderChannelGrayscaleType |
2 |
Data is interpreted as a single channel linear grayscale image. |
| siRenderChannelDepthType |
3 |
Data is interpreted as a single channel depth image, where a value of 0 indicates infinity and positive values increasing distance from the camera. |
| siRenderChannelNormalVectorType |
4 |
Data is interpreted as a three-channel, XYZ normalized vector. |
| siRenderChannelVectorType |
5 |
Data is interpreted as a three-channel, arbitrary XYZ vector or point in space. |
| siRenderChannelLabelType |
6 |
Data is interpreted as a single-channel, unique identifier value for each closest object visible to the camera. |
| siRenderChannelCustomType |
0x80000000 |
Defines a special channel which
is not interpreted in any way by Softimage and therefore cannot be displayed when used as a
definition for render channels. The value itself is a composite of the enumerator value
plus the lower 16-bits, which define the channel count. |