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Lightmapping...

Started by mubios Apr 19, 2002 at 10:26 PM 4 replies 550+ views

Original Post

Apr 19, 2002 at 10:26 PM

K, I have it all set up except for one piece: ... glBlendFunc(GL_SRC_ALPHA, GL_ONE); pModel->drawLightmaps(true); glBlendFunc(GL_DST_COLOR, GL_ZERO); pModel->draw(true); ... it draws correctly except that it will only draw in the first light''s lightmaps - if i dont draw the main model (//pModel->draw(true)

it will draw all of the lights and their lightmaps correctly, so I think it has to do with my blend funcs. I hope that this is enough to go off of :> Thanks in advance for any help.

python_regious

103

python_regious

Apr 20, 2002 at 5:45 AM

You want to draw the model first, with the decal texture without blending, then modulate the lightmap ontop of that, so using two passes that would be:


glBlendFunc( GL_ONE, GL_ZERO );
DrawDecalModel();

glBlendFunc( GL_DST_COLOR, GL_ZERO );
DrawLightmapModel()

Death of one is a tragedy, death of a million is just a statistic.

zedzeek

164

zedzeek

Apr 20, 2002 at 6:10 PM

no
draw lighting first (with out blending)
+ draw the decal textures over the top with dst_color zero blending

http://uk.geocities.com/sloppyturds/gotterdammerung.html

python_regious

103

python_regious

Apr 20, 2002 at 6:51 PM

Hmmm... yeah I could quite possibly be wrong, I just use multitexturing

Death of one is a tragedy, death of a million is just a statistic.

_the_phantom_

496

_the_phantom_

Apr 20, 2002 at 7:22 PM

quote:
Original post by python_regious
Death of one is a tragedy, death of a million is just a statistic.

This is off topic I admit, but I''ve been meaning to ask for a while, that quote, from the Marilyn Manson song ''fight song'' or does it come from another source?

right... sorry, carry on with the OGL talk

python_regious

103

python_regious

Apr 21, 2002 at 4:53 AM

You caught me! It''s a quote from the Marilyn Manson song

Death of one is a tragedy, death of a million is just a statistic.

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