Project Update: Solar Flux

Feature: The Power of the Othala Engine Material System.

The Othala Engine boast a very capible and powerful material system which can be manipulated through the use of the R.U.S.T. tool which has been designed for use with the Othala Engine, materials can also be hand scripted and providing that the artwork is decent the results which can be yeilded from the engine I believe are very impressive.

It is worth noting that all the initial shader were written by the one and only Micheal Short. I have extended these base shaders to include extra effects. Mike has also written a bunch of post-processing effects which I will cover at a later date.

So on with the show.

We begin with the most basic shader avail to anyone when using the Othala Engine.

Ambient Colouring:

Shaders don't come any simpler than this, you literally set a colour for the mesh to return and hey presto you get a very simplistically shaded object, it's excellent for debugging and performance testing.

Textured Ambient Colouring:

This allows for a single texture to be placed onto a mesh. Such techniques may seem somewhat useless, but if you observe the first picture you will see that the mesh has subsections, and different effects can be placed onto each subsection, ambient textured colouring is especially useful with HDR for faking light emission.

Next we have the most basic complete lighting model.

Phong Based Per Pixel Lighting:



This is a basic method of treating a surface as if it is uniformly shiney. Note that the red centre isn't reflecting light, that is due to that part of the mesh being rendered using Textured Ambient Colouring.

Ashikhmin Specular:

This particular method of lighting allows for fine control to be place over how the light spreads across the object.

Normal Mapping:

Normal mapping is fairly common in games nowadays, it allows for fine control to be place over how the surface reacts with the lighting, on a per pixel level. This requires a colour map and a normal map to be generated.

Phong based lighting with Specular Mapping:

By adding the specular map we can dictate how the light interacts with a surface. Nice result I think.

Ashikhmin Specular with Specular Mapping:

Normal Mapping With Specular Mapping:

When we add HDR to the scene as you would expect for such a game, the magic really begins to come alive.

Adding a new shader to the renderer is very straight forwards, so expect to see more material processes as time progresses.

And here's a video of all the effects rendered in full HDR. Though as I reminder I knocked the materials togeather in next to no time by hand, and didn't tweak the HDR settings, so some of them don't look anywhere near as good as they could.