Creating Believable Materials - Photographic Rendering with V-Ray for SketchUp - page 213

Tip
Many artists have different opinions regarding the best way to set up and
test reflections in a material. Some would argue that doing so with the
correct diffuse color in place, as we have done here, is the best way to do
it, while others (myself included) find that testing reflections using a dark
or medium grey color in the diffuse property makes it much easier to see
and evaluate the level of reflections being produced by current settings.
In order to come up with reflection values that I wanted to use in this ma-
terial, I temporarily replaced the diffuse color with a medium grey while
testing and then replaced the color once I was done.
To take a look at what those tweaks give us, let's click on the POV Shot - Main
Gallery scene tab and then hit the render button on the V-Ray toolbar once again.
The finished render shows that there is some life in our scene now. Of course, we
are seeing a measure of color bleed in the scene, especially on the display cases,
but as we have already noted, color bleed is a naturally occurring phenomenon that
is also automatically generated in V-Ray by its Global Illumination systems. We may
want to evaluate and tweak the amount of color bleed we are getting during the later
stages of production, but for now I am reasonably happy with what we are seeing.
As the ceiling is the final piece of large area geometry in our scene that still needs a
material applying, let's quickly move ahead and deal with that next.
Playing it safe with the ceiling
Now, we can be as adventurous as we like when it comes to creating the color
scheme for our room, but we do need to keep in mind that anything we add to the