Introduction to RenderMan

Mike Bailey [email protected]

Oregon State University

Oregon State University mjb – December 21, 2011 History of RenderMan, I

1977: Star Wars IV: A New Hope

1979: Ed Catmull, Alvy Ray Smith, and others leave NYIT to join

Image Digital Editing Effects Image/Volume processing and Compositing Rendering Hardware

1984: John Lassiter leaves Disney Animation to join

Oregon State University Computer Graphics mjb – December 21, 2011 History of RenderMan, II

Image/Volume Rendering Hardware

Pixar Image Rendering Computer Software

Star Trek II REYES Young Sherlock Holmes

RenderMan Pixar Animation Studios

RIB Shade Trees

Oregon State University Computer Graphics prman mjb – December 21, 2011 History of RenderMan, III

Pixar Animation Studios

1986: buys Pixar for $10M

Steve Jobs adds another $60M to keep Pixar running

1986: Luxo Jr.– Nominated for an Academy Award

1988: – won Academy Award for Best Animated Short

1993: RenderMan wins a Technical Academy Award

1995:

1995: Pixar IPO -- Steve Jobs stake now worth $1.2B

2004: Pixar bought by Disney for $7B Steve Jobs stake now worth $3.5B

Oregon State University Computer Graphics mjb – December 21, 2011 RenderMan Pipeline

RIB File

Bounding Box Analysis

Split

Dice into Microfacets

Call Shaders

Do Front-to-Back Compositing

Assemble Pixels

Oregon State University Final Image Computer Graphics mjb – December 21, 2011 RenderMan Composites Starting at the Eye

First, let’s think about it back-to-front:

α=α + − color12 2 color 2(1 2 ) black , α=α + − color01 1 color 1(1 1 ) color 12 ,

* α=α + − color0 color 0(1 0 ) color 01 .

Substituting gives us the front-to-back equation:

α α α α α α * α α =α +− +−− +−−− color00 color(1 011 ) color (1 0 )(1 122 ) color (1 0 )(1 1 )(1 2 ) black .

Oregon State University Computer Graphics mjb – December 21, 2011 RenderMan Renders at Higher-than-Screen-Resolution

Oregon State University Computer Graphics mjb – December 21, 2011