Spot light scale and rendering problem #43004

New Issue

Martial · 2014-12-24T19:40:02+01:00

Martial commented

2014-12-24 19:40:02 +01:00

System Information
Operating system and graphics card : Mac OSX 10.10 Yosemite on NVIDIA GeForce 9400M

Blender Version
Broken: 2.72b 9e963ae

Short description of error

I wanted to make a ray of light scanning a cube.
Was unable to scale a spotlight : i can scale it on the modeler but render always show as circle.

when using halo, halo doesn't render at the same position as the light is positioned in the modeler

Exact steps for others to reproduce the error
open attached .blend file
There is a cube + a spot light. The spot light is scaled along Z axis and shrunk along y axis

select the spot light
turn viewport shading in "rendering" mode

light spot on the cube seems at the good position, but with no scale applied

in the spot light settings :

turn on "halo"
light beam is not in the right place but the spot light on the cube is ok but no scaled applied

in the spot light settings :

turn on the square shape
spot light on the cube and light beam seems ok.

halo_test.blend

**System Information** Operating system and graphics card : Mac OSX 10.10 Yosemite on NVIDIA GeForce 9400M **Blender Version** Broken: 2.72b 9e963ae **Short description of error** I wanted to make a ray of light scanning a cube. Was unable to scale a spotlight : i can scale it on the modeler but render always show as circle. + when using halo, halo doesn't render at the same position as the light is positioned in the modeler **Exact steps for others to reproduce the error** open attached .blend file There is a cube + a spot light. The spot light is scaled along Z axis and shrunk along y axis select the spot light turn viewport shading in "rendering" mode - > light spot on the cube seems at the good position, but with no scale applied in the spot light settings : - turn on "halo" - > light beam is not in the right place but the spot light on the cube is ok but no scaled applied in the spot light settings : - turn on the square shape - > spot light on the cube and light beam seems ok. [halo_test.blend](https://archive.blender.org/developer/F133431/halo_test.blend)

Martial commented

2014-12-24 19:40:02 +01:00

Changed status to: 'Open'

Martial commented

2014-12-24 19:40:02 +01:00

Added subscriber: @SMarty69

Aaron Carlisle commented

2014-12-24 20:42:37 +01:00

Added subscriber: @Blendify

Aaron Carlisle commented

2014-12-24 20:42:37 +01:00

So what you are saying is that because the lamp is scaled in a weird shape the light cast should fallow that basic shape?

Julian Eisel commented

2014-12-24 20:51:16 +01:00

Added subscriber: @JulianEisel

Julian Eisel commented

2014-12-24 20:51:16 +01:00

Hey @SMarty69,
Please always create 2 reports for 2 different bug, that helps to organize our tracker

For the first bug: The spot light cone size isn't controlled by the size in the 3D View, it is changed through the "Size" Button in the Spot Shape Panel, so this isn't considert to be a bug. For further reading i'd suggest having a look at our new Blender Manual .

I have to investigate the other issue a bit deeper, it looks like a bug from the first glance, but there might be another reason for this.

Hey @SMarty69, Please always create 2 reports for 2 different bug, that helps to organize our tracker For the first bug: The spot light cone size isn't controlled by the size in the 3D View, it is changed through the "Size" Button in the Spot Shape Panel, so this isn't considert to be a bug. For further reading i'd suggest having a look at our new [Blender Manual ](http://blender.org/manual/lighting/index.html). I have to investigate the other issue a bit deeper, it looks like a bug from the first glance, but there might be another reason for this.

Martial commented

2014-12-24 21:26:26 +01:00

Ok, my bad. I read some documentation and went through already posted bugs before posting but i should have missed some tricks...

for the first "bug" : so i think beam shape shouldn't have its scale displayed in 3D view, this can lead to misunderstanding. By the way, there is no way to shape the beam as i want to in the Spot Shape Panel as there is only one parameter for the whole halo beam. One should be able to set a least 2 axis and rotation to do so.

Nevertheless, when the "square shape" is turned on, this time the spot light seems to follow the scale controlled in the 3D view, but the render is not at the position defined in the 3D view...

tell me if you need more information.

Ok, my bad. I read some documentation and went through already posted bugs before posting but i should have missed some tricks... for the first "bug" : so i think beam shape shouldn't have its scale displayed in 3D view, this can lead to misunderstanding. By the way, there is no way to shape the beam as i want to in the Spot Shape Panel as there is only one parameter for the whole halo beam. One should be able to set a least 2 axis and rotation to do so. Nevertheless, when the "square shape" is turned on, this time the spot light seems to follow the scale controlled in the 3D view, but the render is not at the position defined in the 3D view... tell me if you need more information.

Sergey Sharybin commented

2014-12-25 09:33:43 +01:00

Changed status from 'Open' to: 'Archived'

Sergey Sharybin closed this issue

2014-12-25 09:33:43 +01:00

Sergey Sharybin self-assigned this 2014-12-25 09:33:43 +01:00

Sergey Sharybin commented

2014-12-25 09:33:43 +01:00

Search function in the bug tracker helps saving reasonable amount of time for a handful of developers we've got.. This issue has been already reported in #37071 and moved to TODO http://wiki.blender.org/index.php/Dev:2.5/Source/Development/Todo/Render#Render_Engine

Thanks for the report, but it is a TODO :)

Search function in the bug tracker helps saving reasonable amount of time for a handful of developers we've got.. This issue has been already reported in #37071 and moved to TODO http://wiki.blender.org/index.php/Dev:2.5/Source/Development/Todo/Render#Render_Engine Thanks for the report, but it is a TODO :)

Martial commented

2014-12-25 12:23:27 +01:00

Well i know bug report can be time consuming for the development team so i did search... unfortunately i obviously missed it ;)

thanks a lot for your work.

Well i know bug report can be time consuming for the development team so i did search... unfortunately i obviously missed it ;) thanks a lot for your work.

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Spot light scale and rendering problem #43004