[JAVA3D] DOT3 Bump Mapping

[Florin Herinean]

Hello Bump Mapping Gurus,

I've tried to use the dot3 bump mapping code from Alessandro Borges (a big
THANK YOU!). After some small code corrections, I managed to get very nice
bumps on my planets :-) However, there is still something that bothers me.
When applying bump mappings, the ambient light is *completely* disabled. The
only lights still in action are the point or directional lights. Is there
anything wrong I'm making in the following code that have the net result of
disabling the ambient light ?

javax.media.j3d.Texture tex = ResourceManager.loadTexture(getTextureURI());
javax.media.j3d.Texture bump = ResourceManager.loadTexture(getBumpURI());

TextureUnitState[] tus = new TextureUnitState[2];

TextureAttributes tb = new TextureAttributes();
tb.setTextureMode(TextureAttributes.COMBINE);
tb.setCombineRgbMode(TextureAttributes.COMBINE_DOT3);
tb.setCombineRgbScale(2);

tb.setCombineRgbFunction(0,TextureAttributes.COMBINE_SRC_COLOR);
tb.setCombineRgbFunction(1,TextureAttributes.COMBINE_SRC_COLOR);
tb.setCombineRgbFunction(2,TextureAttributes.COMBINE_SRC_COLOR);

tb.setCombineRgbSource(0,TextureAttributes.COMBINE_TEXTURE_COLOR);
tb.setCombineRgbSource(1,TextureAttributes.COMBINE_PREVIOUS_TEXTURE_UNIT_STA
TE);
tb.setCombineRgbSource(2,TextureAttributes.COMBINE_OBJECT_COLOR);

TextureAttributes tt = new TextureAttributes();
tt.setTextureMode(TextureAttributes.MODULATE);

tus[1] = new TextureUnitState(tex, tt, null);
tus[0] = new TextureUnitState(bump, tb, null);
app.setTextureUnitState(tus);

Thanks for any help,

Florin

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