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Re: no games use coloured specular
Hehe Glib that's exactly the answer I was waiting to hear :P Yep those are rare cases shown here (christmas ball, redbull can) and obviously they are not the type of asset mostly seen in todays games. But! Mop was just showing the most obvious examples to bring the point across. In fact, full color spec has a huge impact… -
Re: no games use coloured specular
I find gloss pretty vital too (moreso than colored spec!). It really helps surfaces with different materials on them, like rock with slimy moss growing on it, or combinations of plastic (small/medium size spec) with metal (large spec). It's all just a hack though =) , a large spec just kinda looks like a blurry large scale… -
Re: no games use coloured specular
If the BnW spec and the color spec are both separate textures then you will save nothing in framerate. If the BnW spec is stored as an alpha you may save some in frame rate but it's relatively useless because the saving would most likely be small, the gain in memory would be aweful (DXT5 is twice as big memory wise as a… -
Re: no games use coloured specular
We use full-on coloured spec for everything here. For assets where they have multiple materials (eg. something like a gun or costume with rubber, plastic, metal, fabric and whatever else) it really makes a big difference IMHO. The amount of variation you can get in materials by using coloured specular is way wider than… -
Re: no games use coloured specular
we take one map, called the expensive map, and put the spec in the red channel, the incandescence in the green channel, the parallax in the blue channel, and a detail map mask in the alpha,... we can tint the spec a color, but we don't have full on colored spec. seems to work out well and i have had no problems making what… -
Re: no games use coloured specular
Generally speaking, you arent saving ANY memory using grayscale spec, unless you use uncompressed textures for everything. There is no compressed format to save a single channel image supported by video cards, so you compressed full color spec map is actually 1 half the size of your uncompressed single channel image. You… -
Re: no games use coloured specular
Yeah that is a valid point, if you can cram more into a spec/gloss/general effect texture, than you will be saving memory over a full color spec. But in a straight up comparison, its a very common misconception to think that using a single channel grayscale image for spec saves memory, and it just isnt the case. -
Re: no games use coloured specular
If that's the kind of thing you're looking for, one possible solution is to tint the specular via the diffuse. It can be an expensive operation (involves filtering out the bright/dark information from diffuse) but much easier to fit in the framebuffer limitations. If you wanted the red metal to have an orange spec and blue… -
Re: no games use coloured specular
Well There's more stuff a material needs than spec usually, like gloss and maybe an extra mask for tints, alpha or cubemaps. At GRIN we used to work with a "gsm"-texture, gloss, spec and extra mask all put in one texture, each going one one channel, and compressed as dxt1. If you want colored spec you need to find two more… -
Re: no games use coloured specular
yep, the texture memory doesnt need to be a problem as you can use a selection of methods (no colour, single colour multiplier, full texture colour) to acheive the results, so you would only use a full colour texture on main character perhaps, while useing shader based values for props and envs. But if you are using…
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