For my shader writing class I am going to try to tackle food! My original idea for a scene for the final project was to do a table with pizza, wings, and two litters. To help Professor Redmann suggested I look up a paper Pixar put out for SIGGRAPH in 2007 that talked about food in there movie Ratatouille. The one section I have focused on was the one on shading food. They talked about three major things to pay attention to.
- Softness
- Reflection
- Saturation
Paying attention to these will make you food look tasty!
Softness refers to the foods translucence. This tells me the scattering is going to be a major part of the shader since food that dose not have internal bounce light looks hard and plastic. Also they said that they took there diffuse pass, softened it, then con bound it with the original diffuse pass.
Reflection makes the food look moist and flavorful. They where vary clear that they did not use specular to achieve it since the hard spec hit made the food look hard, plastic, and unnatural.
The last aspect Saturation controlled how fresh the food looked.
Considering what I have learned thus far, maybe building tools into the shader may make things easier on artists. For example a slider for freshness could be made that controlled the materials attributes. Also common foods could have different noise generation settings.
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