Doom3/Quake4 MD5Mesh

sio2 · Post by **sio2** » Mon Dec 18, 2006 8:56 pm

Work in progress, but here's a couple of screen shots. I have the meshes loaded in Irrlicht but they are currently unlit and with diffuse texturing. I'm currently debugging the parallax/normalmap/bumpmap shader.

Player mesh in a familiar Irrlicht environment:

Animated bad guy:

Halan · Post by **Halan** » Mon Dec 18, 2006 9:00 pm

normal mapping is missing isnt it but looks good indeed and i think itll be usful

greets,
halan

sio2 · Post by **sio2** » Mon Dec 18, 2006 9:09 pm

Halan wrote:normal mapping is missing isnt it but looks good indeed and i think itll be usful

greets,
halan

Its based on code from this link:
http://irrlicht.sourceforge.net/phpBB2/ ... hp?t=14569

I'm loading all the textures and making a custom Irrlicht material (for the shaders) but I need to debug it a bit - not quite looking as it should, yet.

JP · Post by JP » Mon Dec 18, 2006 9:16 pm

Excellent job! I really hope you get it finished and working nicely! Will be a great addition to the engine and allow for some really good quality models to improve the quality of Irrlicht demos!

esaptonor · Post by **esaptonor** » Mon Dec 18, 2006 10:13 pm

will this animated mesh format be able to be normal mapped? that would be awesome!

sio2 · Post by **sio2** » Mon Dec 18, 2006 10:29 pm

esaptonor wrote:will this animated mesh format be able to be normal mapped? that would be awesome!

There are four textures:
1. diffuse map (base texture)
2. normal map (surface detail)
3. gloss map (specular highlighting)
4. heightmap (bump/parallax)

lostclimategames · Post by **lostclimategames** » Mon Dec 18, 2006 10:52 pm

well this sure shows, that the id team are definately programmers and not artists

JP · Post by JP » Mon Dec 18, 2006 10:57 pm

As if the team working on such big games as Quake 4 and Doom 3 would be made entirely of programmers

Those teams are quite large and broken up into things like gameplay programmers, engine programmers, artists, modellers etc.

sio2 · Post by **sio2** » Mon Dec 18, 2006 11:03 pm

lostclimategames wrote:well this sure shows, that the id team are definately programmers and not artists

Eh? What's that supposed to mean?

hybrid · Post by **hybrid** » Mon Dec 18, 2006 11:39 pm

Oh great, I guess Vermeer will love this. Please post the required material settings if you need help on those things.

lostclimategames · Post by **lostclimategames** » Tue Dec 19, 2006 4:48 am

hey hey hey, not trying to be offensive

no, i was just saying if you look at the texture quality, its not all that great compared to other games, but with all the high tech shaders, every thing looks great

vermeer · Post by **vermeer** » Tue Dec 19, 2006 6:16 am

hehe

dont worry, lost...I know you are referring to an old saying about id...

actually, doom3 game textures were very low res compared to these days' specs...mainly as..richness was trusted on specular maps, dot3 bump, some other effects, an dthe fact it all happens in the dark, were local color detail gets to be way less important.

One thing is...hmmm maybe...I never know, but I think there was already a way to trigger on the smoothing normals...I saw it somewhere, I mean in irrlicht (not the normal maps, a more 3d basic thing: just normals)

As that ¡s the main issue there.

Hybrid...hehe...yep.

Well, I actually am a lot interested in the b3d thing (it also allows level importing and exporting...in the wait I guess of next blender version which makes finally multiuv and baking lightmaps) , but you all know well how much I did cryied for an md5 loader...

..As yep, Blender, as well as Max, do have a *great* exporter from der_ton,in md5. The blender one is absolutely seamless, takes even the constraints well without the artist needing to bake keyframes. One thing is that exporter I think need from user or coder to write well the tga file name in that exported file (md5mesh and md5anim are actually text files, which makes it all editable) , there were it says "shader" or something like that. This is very important to know.Is easy, but important.

sio2 · Post by **sio2** » Wed Dec 20, 2006 1:18 pm

Progress Report.

Getting closer.

Should have a demo soon.

1. I use S3DVertexTangents as the vertex format, so normals and tangents are skinned too, ready for normal/bump mapping.

2. The sample code uses GL interleaved arrays. Irrlicht doesn't support these, so every draw call I was copying the interleaved data into an S3DVertexTangent vertex. Not good for performance. I've rewritten the part that computes the skinned mesh to write directly into S3DVertexTangent vertices - much faster, as these can now be sent to Irrlicht for rendering without being copied into a compatible vertex format.

3. Irrlicht was passing my shader code the diffuse map for all four diffuse/gloss/normal/bump maps due to PS1.1 restrictions. Once I sorted that out (and made an HLSL version of the shader as well) the models are looking quite good.

NOTE: This work is based on the OpenGL MD5 Viewer by David Henry.

buhatkj · Post by **buhatkj** » Wed Dec 20, 2006 6:43 pm

I am curious, have you figured out a way to use shaders on _animated_ meshes? As far as I was aware Irrlicht doesn't do that yet, since the function to make tangents only works on static meshes.
If so, that would be awesome

I have run into that limitation several times in my various irrlicht experiments. I never came up with a good way to get around it.

sio2 · Post by **sio2** » Wed Dec 20, 2006 7:00 pm

buhatkj wrote:I am curious, have you figured out a way to use shaders on _animated_ meshes?

Yes. Normals, tangents and binormals are skinned (binormals are calculated in the shader via a cross product).

Irrlicht Engine

Doom3/Quake4 MD5Mesh

Doom3/Quake4 MD5Mesh

animation and shaders

Re: animation and shaders