Comments on: Creating Static Shadows for the Blender Game Engine

By: Tynach

Tynach — Fri, 21 Jul 2006 18:49:02 +0000

What I hear about radiosity is that it's a primative form of Global Illumination… I just havn't figured out how to make it work in the Game engine. haven't found any tutorial or anything.

By: rubicon

rubicon — Mon, 17 Jul 2006 23:15:25 +0000

Another *VERY* realistic approach is… to render your scene with…..(drumroll) radiosity…. and replace the meshes
so ALL the static shadows are 'baked' into the scene..

of course, you have to set up a correct lighting with planes with emit>0 instead of shadowlamps, but the result is way better than the sharp-cut, UVed shadows from a spotlight.

(see last years presentation at BC from Ric cardo C ovino)
so did i. Oldest feature butr still with impresssing results…

/rubicon/

By: JD-Multi

JD-Multi — Mon, 17 Jul 2006 20:58:31 +0000

For creating such shadows I use a python script that can bake to textures. This way you can have the realistic shadows of the render it self be used as textures for your scene. It's also possible to give a maximum size for the textures to be baked. It's just saving a copy of your game scene and make it nice in the render and bake the stuff.

Besides that it bakes shadows, it even bakes the shaders from blender to a texture, and that's really awesome.

By: Joost Bouwer

Joost Bouwer — Mon, 17 Jul 2006 20:11:25 +0000

It could be me, but it should possible to do this faster with the new renderlayers. Just render a shadow pass save it as a targa (or another 32 bit format) and off you go.

Joost

By: Milky

Milky — Mon, 17 Jul 2006 15:41:37 +0000

"p00f", tell me when you have a better way of doing this please.

At any level, "p00f", shadows are always faked, it's not like they're real. You should take a look outside in the real world sometime.

By: T-Ry

T-Ry — Mon, 17 Jul 2006 15:28:45 +0000

This is a good trick to have at your disposal.

Way to flip out over nothing p00f…*GOSH*…

By: Durden

Durden — Mon, 17 Jul 2006 10:37:07 +0000

Does anyone know, how to make shadowmaps in blender??? Like in Quake .)
I've been using RayBaker, but still it's not exactly what i need =|

By: Kayde

Kayde — Mon, 17 Jul 2006 01:32:05 +0000

Hmmmm……. you say that blender has few game engine coders…..

I may be interested in helping, do you have any room for someone who knows a bit of python?
I love python, although I haven't really touched it for about 1 or 2 months, but I'm willing to learn.

By: Michael Crawford

Michael Crawford — Sun, 16 Jul 2006 22:00:17 +0000

This method outlined in the tutorial produces an incorrect result. (the shadow is not properly stretched) What you could do is render from an ortho camera (Orthografic button on camera tab turned on) aimed at a ground plane (rot 0,0,0). The "Scale" on camera tab controls camera size. Set the object's shader's OnlyCast button on (under Links and Pipeline tab). Then set the ground plane's material to "only shadow" under the Shaders tab. Finally, hit render. The render will be black but the alpha channel will contain a correctly shaped shadow.

By: epat

epat — Sun, 16 Jul 2006 21:58:22 +0000

ah – sorry erwin, didn't notice you posting there…