[Sidefx-houdini-list] Linear Workflow

Edward Lam edward at sidefx.com
Fri Aug 27 09:12:26 EDT 2010


On 8/27/2010 8:10 AM, Magnus Pettersson wrote:
> 1. ALL shaders should have their input colors/textures converted to
> linear ->  apply 1/2.2 to all textures and color parameters
> (including point colors). In houdini right now it could equal to add
> a multconstant node after a color parameter before its piped into
> something (like a mult etc).

FWIW, in Houdini 11, you can set your gamma by:
   1. From the main menu choose, Edit > Color Settings > Color Correction
   2. Set the Gamma to 2.2 and then enable ALL the toggles below.
   3. Hit Apply and Save As Default.

This procedure change most of the places that use gamma correction in 
Houdini to 2.2 except for standalone mplay (and a few other places?).

Notably, this procedure will also set the "Color Picker and Swatches" to 
use a 2.2 gamma correction for display. This means that the artist can 
now pick their color parameters in "linear" space obviating the need for 
the shader to apply the 1/2.2 exponent. This assumes though that ALL the 
artists on your project picked their colors this way.

Cheers,
-Edward



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