phong shader on cylinder

[dave-0]

I followed Sock's tutorial on creating a phong shader, left it mapping a grey texture for now.

When I apply it to a brush, in this case a curved 1/4 cylinder the coords flip
at the half way point or something, and a hard edge is generated, and an artifact in the shadow map.

What I am doing wrong ?

Code: Select all

//-----------------------------------------------------
// phong shader for curved brushes in the map

textures/daveo/grey_phong

{
	q3map_nonplanar
	q3map_shadeangle 360 //--- I tried other shade angles also ...
	qer_editorimage textures/daveo/grey_phong_REI.tga
	
	{
		map $lightmap
		rgbGen identity
	}
	{
		map textures/daveo/grey_phong.tga
 		blendFunc filter
	}
}

phong.jpg

[skinNCNmaster]

how is it applied in gtk in the patch surface properties dialog box?

fit natural set or cap?

[Hipshot]

Group the patch and set the _lightmapscale to .25, .025 or something and see...

And, 360, won't that give strange results?

[obsidian]

Are you applying phong shading to a curve patch? FYI, curves are automatically "phonged".

Yes, shadeangle usually ranges between 0 and 180 (or 179 to prevent straight surfaces from being "phonged").

[dave-0]

No, its just a brush, 1/4 of a cylinder. I was messing around with the shade angle I think I started with 90. I will see how its mapped with the surface inspector.

[dave-0]

thanks for the help, I just adjusted the mapping to axial and it looks fine now, at least in the test map I compiled