Variance shadow maps (VSM) work incorrectly in the BGE #43984

New Issue

Sybren A. Stüvel · 2015-03-13T14:43:55+01:00

Sybren A. Stüvel commented

2015-03-13 14:43:55 +01:00

System Information
Ubuntu 14.10, GeForce GTS 450

Blender Version
Broken: tested on 2.69, 2.71 and 2.74-RC1, and self-built 61eab743f1, and all are broken
Worked: haven't seen it working

Short description of error
Spot lamps with shadow type set to Variance result in a darker scene than in the viewport. It looks like the shadows are rendered correctly, but the non-shadow parts of the scene are rendered too dark:

Exact steps for others to reproduce the error

open bge_variance_shadow_test.blend
observe the lighting of the scene, it should match the left side of the above screenshot.
press - to start the BGE
observe the lighting of the scene, it should match the left side of the above screenshot, but it matches the right side.

Confirmed by @JorgeBernalMartinez as mentioned in #bgecoders:

13:51  lordloki> sybren: it seems that when we are in bge the shadow color is mixed with light color
13:52  lordloki> only occurs when variance shadow is selected
13:52  lordloki> it seems a bug

**System Information** Ubuntu 14.10, GeForce GTS 450 **Blender Version** Broken: tested on 2.69, 2.71 and 2.74-RC1, and self-built 61eab743f1377fdfcf44f2e4928290a3fc4ccfea, and all are broken Worked: haven't seen it working **Short description of error** Spot lamps with shadow type set to Variance result in a darker scene than in the viewport. It looks like the shadows are rendered correctly, but the non-shadow parts of the scene are rendered too dark: ![snapshot8.png](https://archive.blender.org/developer/F150544/snapshot8.png) **Exact steps for others to reproduce the error** - open [bge_variance_shadow_test.blend](https://archive.blender.org/developer/F150546/bge_variance_shadow_test.blend) - observe the lighting of the scene, it should match the left side of the above screenshot. - press - [x] to start the BGE - observe the lighting of the scene, it *should* match the left side of the above screenshot, but it matches the right side. Confirmed by @JorgeBernalMartinez as mentioned in #bgecoders: ``` 13:51 lordloki> sybren: it seems that when we are in bge the shadow color is mixed with light color 13:52 lordloki> only occurs when variance shadow is selected 13:52 lordloki> it seems a bug ```

Sybren A. Stüvel commented

2015-03-13 14:43:55 +01:00

Changed status to: 'Open'

Sybren A. Stüvel commented

2015-03-13 14:43:55 +01:00

Added subscriber: @dr.sybren

Sybren A. Stüvel commented

2015-03-13 14:44:25 +01:00

Added subscriber: @JorgeBernalMartinez

Jorge Bernal commented

2015-03-13 14:59:56 +01:00

Added subscriber: @Moguri

Jorge Bernal commented

2015-03-14 00:05:28 +01:00

more investigation.

Occurs when you unselect "cast" and/or "cast buffer shadows" from shadow panel under material (in this case floor's material)

more investigation. Occurs when you unselect "cast" and/or "cast buffer shadows" from shadow panel under material (in this case floor's material)

mziskandar mziskandar commented

2015-03-14 06:09:44 +01:00

Added subscriber: @mziskandar

mziskandar mziskandar commented

2015-03-14 06:09:44 +01:00

Can remake this bug (or crash) when playing with cast & receive too.testTex.blend
Log:
bpy.context.space_data.context = 'MATERIAL'
bpy.context.object.active_material.use_shadows = False
bpy.context.object.active_material.use_cast_shadows = False
bpy.context.object.active_material.use_shadows = True
bpy.context.object.active_material.use_cast_shadows = True
bpy.context.object.active_material.use_shadows = False
bpy.context.object.active_material.use_shadows = True
bpy.context.object.active_material.use_cast_shadows = False
bpy.context.object.active_material.use_cast_shadows = True
bpy.context.object.active_material.use_cast_shadows = False
bpy.context.object.active_material.use_shadows = False
bpy.context.object.active_material.use_cast_shadows = True (crash)

Can remake this bug (or crash) when playing with cast & receive too.[testTex.blend](https://archive.blender.org/developer/F151184/testTex.blend) Log: bpy.context.space_data.context = 'MATERIAL' bpy.context.object.active_material.use_shadows = False bpy.context.object.active_material.use_cast_shadows = False bpy.context.object.active_material.use_shadows = True bpy.context.object.active_material.use_cast_shadows = True bpy.context.object.active_material.use_shadows = False bpy.context.object.active_material.use_shadows = True bpy.context.object.active_material.use_cast_shadows = False bpy.context.object.active_material.use_cast_shadows = True bpy.context.object.active_material.use_cast_shadows = False bpy.context.object.active_material.use_shadows = False bpy.context.object.active_material.use_cast_shadows = True (crash)

Porteries Tristan commented

2015-10-28 16:24:09 +01:00

Added subscriber: @panzergame

Aaron Carlisle commented

2019-06-29 02:12:01 +02:00

Changed status from 'Open' to: 'Archived'

Aaron Carlisle closed this issue

2019-06-29 02:12:01 +02:00

Aaron Carlisle self-assigned this 2019-06-29 02:12:01 +02:00

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Variance shadow maps (VSM) work incorrectly in the BGE #43984