Attributes To Shaders

[meerkat]

hi i am having some problem passing attributes to parameters in renderman shaders. I have seperated a colour into three different attributes (red, green , blue) that get passed to a shader which has three seperate floats parameters for its colour parameters. But the shader doesnt pick up the attributes and just renders the default colour. I have attatched a hip file which demonstrates the problem.

Thanks for any help in advance

amir

attrib_prob.hip

[Mario Marengo]

Here's the file with the changes you need. Read the notes in the SOPs and VOPs to see what I changed.

Basically:

1. Use the Attribute SOP to do the Houdini->PRMan attribute mappings.

2. Ensure the "varying" status of the shader parameters match the bound ones (and vise-versa).

HTH.

attrib_prob_mgm.hip

[meerkat]

thanks for the explanation