Free renderman software for windows

Pixie is a photorealistic renderer which communicates with modelers or your application through a RenderMan - like interface. Pixie is not a modeler or an animator system thus it does not have any graphical user interface at all.
The scenes you want to render are described in a text file in a language very similar to Pixars RenderMan. Pixie also comes as a C/C++ library which you can link against your application.
Main features:
- Object instancing / delayed primitives
- Displacements
- Programmable shading (using RenderMan Shading Language)
- High quality texture/shadow/environment mapping
- High dynamic range input/output
Scalable, multi-resolution raytracing using ray differentials
- Pixie now has a new raytracing engine that automatically tesselates surfaces on the fly to a desired accuracy determined using the ray differentials. This means rays tracing blurry reflections or computing global illumination are faster to trace and sharp reflections and shadows are more accurate. Pixie also contains a memory manager that keeps the memory that is used to keep these tesselations around under control. Similar to texture caching, Pixie will maintain a set of active surfaces and only those surfaces will consume raytracing memory.
- Motion blur
- Depth of field
- Level of detail (LOD)
- Reyes style rendering (very fast)
- Occlusion culling
- Network parallel rendering
- DSO shaders
Global illumination
- Pixie supports global illumination thru photon mapping and irradiance caching -- The same machinery described in the latest RenderMan interface.
- Automatically raytraced smooth reflections / shadows
Caching/baking computation with LOD (bake3d / texture3d)
- Using this functionality, you can save any value you compute in a shader to a file that you can later re-use. This allows you to perform expensive shading computations at a lower resolution and re-use these computations in the beauty passes. This functionality will also enable exporting shading data from Pixie into your own applications.
Scalable, multi-threaded rendering
- Pixie rendering core has been first completely reorganized/optimized and then multi-threaded. We are very proud of this change. You will see significant speed improvements.
Arbirtaty output values
- Pixie can save arbitrary variables (built in ones such as N, P as well as arbitrary, user defined variables) just like rgb values into images. Using this machinery, you can generate multiple outputs from a single pass and combine them as a post process.
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Freestyle is a software for Non-Photorealistic Line Drawing rendering from 3D scenes.
It is designed as a programmable interface to allow maximum control over the style of the final drawing: the user "programs" how the silhouettes and other feature lines from the 3D model should be turned into stylized strokes using a set of programmable operators dedicated to style description.
This programmable approach, inspired by the shading languages available in photorealistic renderers such as Pixars RenderMan, overcomes the limitations of integrated software with access to a limited number of parameters and permits the design of an infinite variety of rich and complex styles.
The system currently focuses on pure line drawing as a first step. The style description language is Python augmented with our set of operators.
Freestyle was developed in the framework of a research project that was dedicated to the study of stylized line drawing rendering from 3D scenes.

Aqsis 1.0.1 is considered to be a full featured photorealistic, 3D rendering solution, which complies with the Renderman interface standard defined by Pixar. Aqsis comprises a command line rendering tool, a tool for compiling shaders in the RSL language, a tool for preparing textures for optimal use, and various developer libraries to enable integration with third party tools.

Requirements: Windows 95/98/Me/NT/2000/XP/2003 Server

K-3D 0.7.10.0 is known as the free-as-in-freedom 3D modeling, animation, and rendering system, which features a robust, object-oriented plug-in architecture, designed to scale to the needs of professional artists, and is designed from-the-ground-up to generate motion-picture-quality animation using RenderMan-compliant render engines.

It is strongly recommended the Aqsis render engine for use with K-3D. K-3D allows you to create and edit documents in multiple real-time OpenGL solid, shaded, texture-mapped views. You can even model, animate, and interact with animations while they play back for maximum productivity.