Subdivision Modeling

dlangdev · Post by **dlangdev** » Wed Dec 10, 2008 7:48 pm

Hey guys,

This is probably one of the best tutorials I've seen so far for Blender users.

Just go take a look.

http://www.subdivisionmodeling.com/foru ... .php?t=907

BloodInch · Post by **BloodInch** » Thu Dec 11, 2008 1:29 am

yes is very good but lot of poly :s isnt good for games

dlangdev · Post by **dlangdev** » Thu Dec 11, 2008 5:12 am

SubD in games is going to be the next thingy, IMO.

Anyway, here's another interesting tutorial.

http://www.subdivisionmodeling.com/foru ... hp?t=10120

BloodInch · Post by **BloodInch** » Thu Dec 11, 2008 6:58 am

very nice way !!

i like it

Virion · Post by **Virion** » Thu Dec 11, 2008 8:10 am

dlangdev wrote:SubD in games is going to be the next thingy, IMO.

why?

dlangdev · Post by **dlangdev** » Thu Dec 11, 2008 8:29 am

pardon my stupidity, what i meant was that is my next thingy. not the industry in particular.

i played around with it sometime back, then resumed it again a few days ago. nvidia has their own lib called subd.lib and subd.h, in case you're interested.

oldskoolPunk · Post by **oldskoolPunk** » Thu Dec 11, 2008 9:45 pm

dlangdev wrote:SubD in games is going to be the next thingy, IMO.

Anyway, here's another interesting tutorial.

http://www.subdivisionmodeling.com/foru ... hp?t=10120

Subdivision surfaces is a technique used for modeling. While the polycounts of models will increase with newer, faster hardware, never will any game EVER use Catmull-Clark or any other subdivision of surfaces.

It is good for baking static lighting tho. Try baking the light onto a "subD" version of your columns and pasting that on the low poly version for the game.

Mel · Post by **Mel** » Fri Dec 12, 2008 3:19 pm

never will any game EVER use Catmull-Clark or any other subdivision of surfaces.

And why not? Subdivision is nice to get lots of detail out of the simplest forms. Saves memory and it is not that time consuming. If you can subdivide a mesh only in rendering time, the rest of the times, it can simply be stored as a low res model. Besides, it is much easier to rig a low poly character, and then, subdivide the mesh to get a much better looking model and natural looking joints. And would simplify significatly the use of LODs, perhaps.

In this matter, i recall a game which tried to do exactly this, long time ago, Messiah, in the end, i think they never got it right.

Interesting tuts there!

oldskoolPunk · Post by **oldskoolPunk** » Fri Dec 12, 2008 7:46 pm

Dude.

Im not really even sure how to reply to this......

But there is some work going on with the new geometry shaders that will try to actually move the vertices of the models to the outer edges, where the detail is needed, in real-time. Leaving less vertices in the center where they arent needed at that particular frame.

Calculating and quadrupling your polycount at each frame tho? Take a moment to think about what you are saying

dlangdev · Post by **dlangdev** » Fri Dec 12, 2008 7:55 pm

oldskoolPunk: That sounds like another technique where you use the heightmap in the vertex shader. It also has similar effect, tho I have yet to try that out sometime later.

About the subd lib, you need to take a look at the SubD demo. FPS was OK when I was running the demo.

oldskoolPunk · Post by **oldskoolPunk** » Fri Dec 12, 2008 9:19 pm

yes subdivision is great for modeling I use it in Blender almost every day and the framerate is good. But not feasible for games I dont think. Not right now anyways