Now that we have effectively modified the input images, we need to view them correctly. Thankfully, PxrTexture has a simple Linearize checkbox you can enable if you need to gamma correct your texture.
If you're using PxrTexture instead of Maya file nodes to read textures, you need to linearize textures manually. Which translates into wrong colors, wrong light, but proper display. No INPUTS are color managed, therefore all the CALCULATIONS happen incorrectly, but the OUTPUT display is in sRGB. This is another common example of bad color management. Which translates into wrong colors, wrong light and wrong display. No INPUTS are color managed, therefore all the CALCULATIONS happen incorrectly and the OUTPUT display is linear. This is the default in most applications including Maya.
This is where the knowledge of a proper imaging workflow comes in to save the day.
#Renderman it no display software#
In fact, the default gamma workflow for many 3D software is incorrect. This would be simple enough if every software would play by the same rules, but they don't. Pixar's IT viewer can compensate by showing the rendered image through a sRGB look up table (LUT), which is identical to what will be the final image after the sRGB gamma curve is applied in post. Because the resulting linear image in not suitable for viewing, but contains all the proper data.Because light works linearly and therefore only works properly when it lights linear values.
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