release name: The Gnomon Workshop - Grass and Plant Instancing in Maya Mental Ray
release date: 30 November 2012
total size: 6.32GB
In this DVD, Alex covers how to create realistic grass
using Maya, Paint Effects and Mental Ray while also sharing
his techniques for developing a complete natural
environment. We begin by evaluating the default Paint
Effects grass library with discussion on the basic
adjustments needed to make grass more natural. Techniques
for covering large areas with grass are then explored via
curves and instancing. Through the use of instancing,
particles and surface emitters, Alex shows how to populate
large scenes with grass geometry, rendering millions of
polygons with a minimal RAM footprint.
Included is an expression based technique for orienting
instanced geometry with the normal of the generating
surface, an issue less important for plants or trees but
often very important for grass. When elements need to be
interactively and precisely placed, Alex also demonstrates
the use of a freely available geometry paint script, as
well as how to bake particle instances to geometry.
Generating textures, miaMaterials and workflow in
conjunction with Physical Sun/Sky is thoroughly discussed.
Alex also demonstrates how to render and utilize zDepth
passes to add post depth-of-field and fog effects, how to
render true volumetric fog effects, as well as Photoshop
and After Effects post techniques to increase realism
through the use of color correction and plug-ins, including
Magic Bullet, LensCare and Sapphire.
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