Sunday 6 July 2014

Textures and Shaders

For this week's blog post, I went into Maya 2014, and played around a little big with the many textures and shaders available in the Hypershade menu. The results were as follows:

Phong Shader
The Phong shader gave the sphere a shiny looking surface. The light source can be clearly and brightly be seen on the surface of the sphere.

Blinn Shader
The Blinn shader made the sphere look like a plastic material, it isn't as shiny as the Phong shader, but you are still able to slightly see the bright light source on the surface.

Lambert Shader
The Lambert shader made the sphere appear as a shine-less surface, like wood. There is no reflection of the light source on the surface.

Anisotropic Shader
 The anisotropic shader make the sphere looks a bit strange, as it is intended for cylindrical objects.

Brownian Shader

Cloud Shader

Crater Shader

Granite Shader


Leather Shader

Ocean Shader
 This shader pleasantly surprised me, I've always been a big enthusiast of water like shaders and materials eve since finding out about it when I was working with Blender. This is so far my favourite shader.

Pioneers of 3D Graphics, Democratization and Ptex

Pioneers of 3D Graphics

3D Graphics as we know it today has come a very long way since the start of modern technology. Many amazing and talented artists have played vital parts in shaping the way that games and films look today. However, behind every great digital artist, is a great computer scientist that made their work possible. These computer scientists are often artists themselves too. Some of these people created the foundations when the industry was only starting to sprout many years ago. Some people take this foundation work and refine them. A couple of the pioneers were:

Ed Catmull - Texture Mapping, Anti-aliasing, Subdivision Surfaces, Z-Buffering
Subdivision Surface
Texture Map  

Jim Blinn - Blinn-Phong Shader Model, Bump Mapping
Blinn-Phong Shader Model


Bump Mapping

Loren Carpenter & Robert Cook - Reyes Rendering

Ken Perlin - Perlin Noise, Hypertexture, real-Time Character Animation, Stylus Based Input Devices

Pat Hanrahan & Henrik Wann Jensen - Subsurface Scattering, Photon Mapping

Arthur Appel & Turner Whitted - Raycasting & Raytracing Algorithms

Paul Debevec - Image Based Rendering & Modeling, HDRI

Krishnamurthy & Levoy - Normal Mapping
Normal Mapping


Ofer Alon & Jack Rimokh - Founded Pixologic, created ZBrush


William Reeves - Motion Blur Algorithm

For more information, see this link.

Democratization of 3D Graphics 

Democratization in the 3D graphics industry means that the divide between the larger studios and freelancers is becoming smaller. With more and more tools becoming easily affordable for not just studios but freelance artists, the lone ranger that are freelance are able to create equal quality work as a large studio could produce. 

Until very recently, freelance artists could own well-equipped workstations but be restrained by the specs. Their ability to render scenes would be severely crippled by this, as was the amount of polygons they could use before their system would struggle to load it all. Recently, the option for freelance artists to send your files off to a dedicated render farm after having done test renders.

Ptex

Ptex is a texture mapping system developed by Walt Disney Animation Studios for production quality rendering. Ptex does not require UV assignment, as it applies separate texture to each face of a subdivision. I think Ptex will allow future assets to have higher definition texture and make creations look even closer to being life-like. By what I have been reading, it sounds like a lot more effort than texturing as we do it now, because of the possible need to texture every single face individually instead of assigning a single plane of texture to several faces using UV mapping.