TGMs Shader Package[C++/GLSL]

jingquan · Post by **jingquan** » Thu Nov 08, 2007 11:34 am

You'll need OpenGL 2.0 or higher I think. I got that running in OpenGL 1.5 as well.

BlindSide · Post by **BlindSide** » Thu Nov 08, 2007 12:38 pm

No, even OpenGL 1.2 is fine. It is probably a strict shader compiler that is throwing some errors, a too low pixel shader or vertex shader version, or an incorrect (too large or npot) RTT.

hybrid · Post by **hybrid** » Thu Nov 08, 2007 2:16 pm

Well, OpenGL 1.5 is the first one with GLSL included. Otherwise you have to rely on extensions.

dlangdev · Post by **dlangdev** » Thu Nov 29, 2007 12:43 am

Awesome, hope to see more of this stuff soon.

fireside · Post by **fireside** » Sun Dec 02, 2007 3:58 pm

How hard is it to do a shader that can bump map along with the light maps? I heard you have to use shaders or else you can only use one or the other in Irrlicht.

TheGameMaker · Post by **TheGameMaker** » Thu Dec 06, 2007 11:46 am

its not hard... its in fakt just 3 or 4 lines more...
you simply have to multiply the result with the lightmapped texture.. in fakt this has been done by me in my "bounce" projekt in the lava level..
(I use a strange aproach to lightmapping..)
It uses the range from 0 to .5 for darkening and from .5 to 1 for lightin up..
so maybe thats not what you want.. but anyway.. its very easy..
simply load another texture.. (the lightmap..) and then get the pixel and multiply it with the return value...

belfegor · Post by **belfegor** » Sun Dec 09, 2007 9:15 am

I doubt that you can do that since none of the irrlicht vertex types
can hold diffusetexcoord/tangents/binormal and lightmap texcoord together.

BlindSide · Post by **BlindSide** » Sun Dec 09, 2007 1:33 pm

I made one the other day, it used TGM's on-the-fly tangent generation method like in his normal map shader, so that the second texcoord can be fre for lightmaps.

Although, this doesn't seem to work well on all meshes for some reason.

TheGameMaker · Post by **TheGameMaker** » Mon Dec 10, 2007 6:35 pm

since my one was based on a single small mesh I simply used the same coordinates for tex&lightmap, but yeah.. Blindsite is right.. I use on the fly generated Bitangents since my shader is working with animated meshes as well.

Avian · Post by **Avian** » Tue Dec 18, 2007 8:20 pm

Those are mad effects!
Thanks!

dlangdev · Post by **dlangdev** » Tue Dec 18, 2007 8:24 pm

come on, put some URLs where i can look into.

images are much better than words.

FuzzYspo0N · Post by **FuzzYspo0N** » Tue Dec 18, 2007 8:49 pm

lol, dlangdev, read all 4 pages first

dlangdev · Post by **dlangdev** » Tue Dec 18, 2007 10:50 pm

it would be nice to see what kind of framework will come out later for supporting material-effect binding, i mean someone will have to think about a way of mapping a technique to a material, then store that relationship somewhere, maybe a textfile or something.

i think most demos right now are doing the mapping in hard code. though what is needed to move this forward will take a lot of discussion, or perhaps the core will come up with a tentative design.

just think about the possibilities, it's simply...

...awesome.

come on now, fellas. bang up some code and show us more glitz.

BlindSide · Post by **BlindSide** » Wed Dec 19, 2007 8:35 am

Niko is planning an XML-based format. Though I doubt any major progress has been or will be made on that any time soon.

dlangdev · Post by **dlangdev** » Wed Dec 19, 2007 6:12 pm

cool, that's nice to know there is a plan.

i might have sounded too demanding, so i may have to clarify that.

anyway, for now, i'll code my demo scene the shortest possible way as i'm not ready to make a cg-based game. there's a lot of stuff to learn in terms of vertex and fragment shading. so i'm doing them one piece at a time putting them in demo programs. later, once i get to learn how they connect then i'll be able to piece them together.

i'm hoping shader quality is going to look closely like crysis or unreal3, though.