[Bug 36236] Problems with lights in Trine game from www.humblebundle.com

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=36236

--- Comment #21 from Turo Lamminen <turo at alternativegames.net> 2011-04-20 02:59:12 PDT ---
Try this: 
Modify data/shader/cg/deferred_light_pixel.cg

On about line 75 in function getAmbientSample change this:

return lerp(half3(FOG_COLOR.xyz), result, deferredSample3.z);

to this:
return deferredSample1.xyz;

This dumps g-buffer 1 to screen. Likewise for other buffers.
g-buffers are as follows:
1 color. Should look pretty normal except for being completely fullbright
2 normals. Should be red-green-yellowish
3. light parameters. Should be mostly blue

If you want to see how this should look on a working driver you need to disable
lights. Easiest way to do this is to change function getPointlightSample around
line 460. Change

return result;

to

return half3(0.0);

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