Blue Moon Rendering Tools

Blue Moon Rendering Tools, or BMRT, was one of the most famous RenderMan-compliant photorealistic rendering systems and was a precursor to NVIDIA's Gelato renderer.[1] It was distributed as freeware. BMRT was a popular renderer with students and other people who were trying to learn the RenderMan interface. It also had some features PhotoRealistic RenderMan did not have at the time, for example, ray tracing, radiosity, volume rendering, and area lights.[2] Even Pixar used BMRT for ray tracing before PRMan had such features. According to Exluna, it was used for 3D rendering in movies such as A Bug's Life, Stuart Little, The Cell, Hollow Man, and Woman on Top.

Blue Moon Rendering Tools
The Cornell box rendered by BMRT 2.3.5 (1997) with radiosity enabled
Developer(s)Larry Gritz/Exluna
Stable release
2.6 / November 2000
Operating systemIRIX, Linux, Microsoft Windows
Type3D renderer
LicenseProprietary

BMRT was originally developed by Larry Gritz while he was at Cornell [3] . He developed it during the early 1990s, first published it in 1994, and was subsequently hired by Pixar to work on their PhotoRealistic RenderMan product.

The last version of the renderer under the BMRT name was 2.6, released in November 2000. The first version of Entropy, BMRT's successor, was 3.0, released in July 2001.

In 2000, Gritz left Pixar to form a company called Exluna, whose flagship product was Entropy, a RenderMan renderer based on BMRT with additional features and optimizations. NVIDIA acquired Exluna and Entropy in early 2002. Amid the acquisition, Pixar sued Gritz and Exluna (now NVIDIA) for a variety of patent, trade secret, and copyright issues that were categorically denied by Exluna. The case eventually settled, leading to the discontinuation of BMRT and Entropy. Gritz and other Exluna employees stayed at NVIDIA to develop the Gelato renderer.

gollark: Or you didn't pray right.
gollark: I think the main objection is just lack of informed consent there.
gollark: I emailed god, but no response back yet.
gollark: If the software updates are made on a different continent and you can apply them in less than about 50ms, you don't even need the time travel - just transmit them directly to your computer via a trans-crustal neutrino beam. Neutrinos travel only very slightly slower than light, and can take a more direct path because they don't interact much with matter, while the fibre-optic lines for internet traffic only let light go at 0.6c or something, and use less direct paths, and have routing overhead.
gollark: You did not specify that they were stolen from evil people, and possibly yes.

References
  1. "Renderman FAQ". Retrieved 2009-12-27.
  2. Gritz, Larry; Hahn, James K. (1996). "BMRT: A global illumination implementation of the RenderMan standard". J. Graphics Tools. 1 (3): 29–47. CiteSeerX 10.1.1.482.4089. doi:10.1080/10867651.1996.10487462.
  3. "BMRT History". Archived from the original on 2000-09-15. Retrieved 2009-12-27.
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