Post Your Irrlicht Screenshots / Render Here.

ent1ty · Post by **ent1ty** » Sat May 21, 2011 10:49 am

Sweet sweet parallax

Radikalizm · Post by **Radikalizm** » Sat May 21, 2011 11:14 am

Much better

Maybe lower the wall's shininess a bit, looks like plastic right now

I posted this article in the thread about gamma correction, it's about a fresnel approximation for real-time rendering

This can add even more realism to your lighting model and is rather cheap to do in a deferred renderer, it's giving real nice results in my renderer so maybe you could benefit from it too

ent1ty · Post by **ent1ty** » Sat May 21, 2011 11:18 am

Well, quite frankly, there is no shines in the screenshot

I haven't implemented it yet, cos i've got much more important things on my mind right now

I suppose it looks shiny because of the parallax mapping that produces some small artifacts sometimes

Radikalizm · Post by **Radikalizm** » Sat May 21, 2011 11:23 am

ent1ty wrote:Well, quite frankly, there is no shines in the screenshot I haven't implemented it yet, cos i've got much more important things on my mind right now

I suppose it looks shiny because of the parallax mapping that produces some small artifacts sometimes

If you're not using any shininess, how are you calculating your specular component?

ent1ty · Post by **ent1ty** » Sat May 21, 2011 11:46 am

I am not... there is no specular component ATM

Radikalizm · Post by **Radikalizm** » Sat May 21, 2011 12:26 pm

ent1ty wrote:I am not... there is no specular component ATM

Ok, I assume then that that white spot on your wall is just a closely placed point light?

ent1ty · Post by **ent1ty** » Sat May 21, 2011 12:36 pm

Yes, it's like 10 cm from the wall(the tomb has about 2m in height). I guess I should add some billboard or something to show the position of the light(also to showcast the no lightning material flag

)

ent1ty · Post by **ent1ty** » Sat May 21, 2011 2:53 pm

I've just implemented transparent alpha ref materials, which don't require additional render pass and I don't use forward rendering to render them. Just like solid(unlimited lights etc.), except that you can see through some parts.

The cube in the front has material flag lighting set to true, the billboards near the walls to false.

I still remember devsh saying that i couldn't do it. Suck on that!

EDIT: Oh, and yes, the transparent parts can even occlude each other

shadowslair · Post by **shadowslair** » Sat May 21, 2011 2:56 pm

You simply discard some of the pixels based on the texture alpha value. What`s so special about it? If you can render unlimited amount of transparent layers without forward pass in Dx9 this will be something new...

I still remember devsh saying that i couldn't do it. Suck on that! Razz

I highly doubt he meant alpha materials, and not transparent ones.

ent1ty · Post by **ent1ty** » Sat May 21, 2011 3:04 pm

shadowslair wrote:You simply discard some of the pixels based on the texture alpha value.

Yes, I said that: "Just like solid(unlimited lights etc.), except that you can see through some parts."

shadowslair wrote:
I still remember devsh saying that i couldn't do it. Suck on that! Razz
I highly doubt he meant alpha materials, and not transparent ones.

Even god doesn't know what he means

3DModelerMan · Post by **3DModelerMan** » Sat May 21, 2011 8:56 pm

You should have specular maps. They can remove some of the plastic like look. All you have to do is use the pixel value from the specular map instead of the material value when you render to the G-Buffer.

ent1ty · Post by **ent1ty** » Sat May 21, 2011 9:23 pm

Too much texture lookups. And the walls in the screens look so shiny just because the lights are right on top of them.

Radikalizm · Post by **Radikalizm** » Sat May 21, 2011 10:17 pm

ent1ty wrote:Too much texture lookups. And the walls in the screens look so shiny just because the lights are right on top of them.

I actually find it strange you haven't implemented specular lighting yet, it's a very important aspect of any lighting model and is absolutely needed to get a realistic result
And besides, it's not at all hard to implement (2 or 3 lines of shader code in your light accumulation)

ent1ty · Post by **ent1ty** » Sat May 21, 2011 10:36 pm

I don't find it very appealing, so even if I did implement it, first thing I would do is set the shines of every material in my scene to 0

So, that's why there is no shines yet.

Radikalizm · Post by **Radikalizm** » Sat May 21, 2011 10:38 pm

ent1ty wrote:I don't find it very appealing, so even if I did implement it, first thing I would do is set the shines of every material in my scene to 0

So, that's why there is no shines yet.

I wouldn't set it to zero, shininess is used in a power calculation, so you'd end up with a value of 1