Wrong reflection with dupli spot lamp #49928

New Issue

Cédric · 2016-11-03T23:31:47+01:00

Cédric commented

2016-11-03 23:31:47 +01:00

System Information
Win 7
I7-5820K
GTX780 ti (368.69)

Blender Version
Broken: 2.78 1ee43c5
Worked: (optional)

Short description of error
I'm using a Spot lamp with a DupliVerts, but the reflection of the dupli seems wrong.
The reflection of the dupli lights are only in the range of the original Spot lamp :

Spot_Reflect_Bug.blend

Exact steps for others to reproduce the error
Open the file and render the bottom view.
In the Lamp properties, play with the size of the spot to hide or reveal the reflection of the dupli lights.

Sorry if it's not a bug and thank you for your hard work !
C.

**System Information** Win 7 I7-5820K GTX780 ti (368.69) **Blender Version** Broken: 2.78 1ee43c5 Worked: (optional) **Short description of error** I'm using a Spot lamp with a DupliVerts, but the reflection of the dupli seems wrong. The reflection of the dupli lights are only in the range of the original Spot lamp : ![blender_2016-11-03_23-17-30.jpg](https://archive.blender.org/developer/F392438/blender_2016-11-03_23-17-30.jpg) [Spot_Reflect_Bug.blend](https://archive.blender.org/developer/F392434/Spot_Reflect_Bug.blend) **Exact steps for others to reproduce the error** Open the file and render the bottom view. In the Lamp properties, play with the size of the spot to hide or reveal the reflection of the dupli lights. Sorry if it's not a bug and thank you for your hard work ! C.

Cédric commented

2016-11-03 23:31:47 +01:00

Changed status to: 'Open'

Cédric commented

2016-11-03 23:31:47 +01:00

Added subscriber: @Clarkx

Bastien Montagne commented

2016-11-04 08:50:43 +01:00

Added subscribers: @Sergey, @mont29

Sergey Sharybin was assigned by Bastien Montagne

2016-11-04 08:50:43 +01:00

Bastien Montagne commented

2016-11-04 08:50:43 +01:00

Indeed that looks like a bug, @Sergey?

Brecht Van Lommel commented

2016-11-12 20:27:25 +01:00

Added subscriber: @brecht

Brecht Van Lommel commented

2016-11-12 20:27:25 +01:00

Spot lights don't work well with non-zero size, not just in Cycles but the light geometry as defined by Blender seems problematic.

The spot cone starts with radius 0 from the center of the light, but it should start with a radius large enough to encompass the size of the spot light, otherwise part of it will be cut off in reflections like this.

Spot lights don't work well with non-zero size, not just in Cycles but the light geometry as defined by Blender seems problematic. The spot cone starts with radius 0 from the center of the light, but it should start with a radius large enough to encompass the size of the spot light, otherwise part of it will be cut off in reflections like this.

Sergey Sharybin commented

2017-02-27 17:25:33 +01:00

Changed status from 'Open' to: 'Archived'

Sergey Sharybin closed this issue

2017-02-27 17:25:33 +01:00

Sergey Sharybin commented

2017-02-27 17:25:33 +01:00

There is nothing to do with dupli-vert nature of light, you have same exact behavior when making light real. And reason of that @brecht already mentioned,

Considering it a TODO as a known limitation of spot lights. Thanks for the report anyway!

There is nothing to do with dupli-vert nature of light, you have same exact behavior when making light real. And reason of that @brecht already mentioned, Considering it a TODO as a known limitation of spot lights. Thanks for the report anyway!

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Wrong reflection with dupli spot lamp #49928