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falloff.jpg (252,110 bytes) falloff_gradient04.jpg (1,940 bytes) |
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The material def for the light is using the biground1 texture, was that intentional? lights/spotlight_security_camera { lightFalloffImage makeintensity( lights/falloff_gradient04 ) { forceHighQuality map lights/biground1 colored zeroClamp red ((.02 * sintable [(time * ( 1 + Parm3 ) ) ]) +1.68) * Parm0 green ((.02 * sintable [(time * ( 1 + Parm3 ) ) ]) +1.68) * Parm1 blue ((.02 * sintable [(time * ( 1 + Parm3 ) ) ]) +1.68) * Parm2 } } Shouldn't it be using your custom projection image? : lights/spotlight_security_camera { lightFalloffImage makeintensity( lights/falloff_gradient04 ) { forceHighQuality map lights/spotlight_security_camera colored zeroClamp red ((.02 * sintable [(time * ( 1 + Parm3 ) ) ]) +1.68) * Parm0 green ((.02 * sintable [(time * ( 1 + Parm3 ) ) ]) +1.68) * Parm1 blue ((.02 * sintable [(time * ( 1 + Parm3 ) ) ]) +1.68) * Parm2 } } |
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Ah yeah, I didn't mean to include my custom projection image in the .pk4. The problem is the same with either projection image. |
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Relevant post on code for projection lights by stgatilov here: https://forums.thedarkmod.com/index.php?/topic/20768-security-cameras/&do=findComment&comment=456655 |
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I experimented with projection textures long time ago, so my memory might fail me, isn't the falloff image wrong? The falloff gradient should be billinear, so the light materials works for both omni and projected lights, as in the classic example: https://wiki.thedarkmod.com/index.php?title=File:LT_Projectedlight.png |
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Thanks for the suggestion to use bilinear falloff images for this projected light. Unfortunately it doesn't look like this is the way forward, here are the results: Gradient1 is dark in the middle. In the screenshot you can see the light cone has a dark stripe near the beginning, and it shines far further than expected along the side walls, while the far away end wall is dark as expected. It also shines forwards and backwards (not shown in this screenshot). Gradient2 is bright in the middle. In the screenshot you can see it has the same problem as other falloff images already used in TDM for projected lights: high light intensity until it abruptly cuts to black when the light's range ends. gradient1.jpg (2,420 bytes) gradient2.jpg (2,314 bytes) gradient2_problem.jpg (258,971 bytes) |
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Committed fix for shining backwards to svn (new backend) |
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Added a more comprehensive fix in svn rev 9646. Aside from forbidding "antiworld" (w < 0), also forbid U, V, T getting out of [0..1] interval. |
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@Dragofer Is this resolved now? |
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Excellent: the security camera's projected light now fades out naturally near the end of its range and no longer shines backwards. Thanks very much for this. Setting to resolved. |
- Anonymous
