EEVEE Film transparent not working #79568

New Issue

Everton Schneider · 2020-08-05T20:30:48+02:00

Everton Schneider commented

2020-08-05 20:30:48 +02:00

System Information
Operating system: Linux-5.4.0-42-generic-x86_64-with-debian-bullseye-sid 64 Bits
Graphics card: GeForce RTX 2080 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 440.100

Blender Version
Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-08-05 18:06, hash: 854f73b4a2
Worked: b1bfcf9f6bc2^
Caused by da741013a1

Short description of error
The render setting film-transparent option gives a black opaque background color as a result. It should be alpha in the backgound.

Exact steps for others to reproduce the error
Default file just enable transparent option under film with EEVEE and hit F12. You should see the default cube with the alpha background but you get a black opaque BG color instead.

**System Information** Operating system: Linux-5.4.0-42-generic-x86_64-with-debian-bullseye-sid 64 Bits Graphics card: GeForce RTX 2080 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 440.100 **Blender Version** Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-08-05 18:06, hash: `854f73b4a2` Worked: b1bfcf9f6bc2^ Caused by da741013a1 **Short description of error** The render setting film-transparent option gives a black opaque background color as a result. It should be alpha in the backgound. **Exact steps for others to reproduce the error** Default file just enable transparent option under film with EEVEE and hit F12. You should see the default cube with the alpha background but you get a black opaque BG color instead. ![Screenshot from 2020-08-05 15-26-14.png](https://archive.blender.org/developer/F8749475/Screenshot_from_2020-08-05_15-26-14.png)

Everton Schneider commented

2020-08-05 20:30:48 +02:00

Added subscriber: @EvertonSchneider

blender-admin commented

2020-08-05 20:30:48 +02:00

#79826 was marked as duplicate of this issue

blender-admin commented

2020-08-05 20:30:48 +02:00

#79792 was marked as duplicate of this issue

blender-admin commented

2020-08-05 20:30:48 +02:00

#79605 was marked as duplicate of this issue

blender-admin commented

2020-08-05 20:30:48 +02:00

#79681 was marked as duplicate of this issue

Evan Wilson commented

2020-08-05 22:32:56 +02:00

Added subscriber: @EAW

Evan Wilson commented

2020-08-05 22:32:56 +02:00

Changed status from 'Needs Triage' to: 'Confirmed'

Evan Wilson commented

2020-08-05 22:32:56 +02:00

I can confirm using version: 2.91.0 Alpha, branch: master, commit date: 2020-08-05 13:59, hash: 2ca006f6c1, type: Release

IIRC, it has been like this for a few days, and I haven't gotten around to reporting it myself.

Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 470/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 391.35

Edit: My debug build from 2 days ago also shows this issue. 2.91.0 Alpha, branch: master, commit date: 2020-08-03 01:44, hash: b5dcf74636

I can confirm using version: 2.91.0 Alpha, branch: master, commit date: 2020-08-05 13:59, hash: 2ca006f6c179, type: Release IIRC, it has been like this for a few days, and I haven't gotten around to reporting it myself. Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce GTX 470/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 391.35 Edit: My debug build from 2 days ago also shows this issue. 2.91.0 Alpha, branch: master, commit date: 2020-08-03 01:44, hash: b5dcf74636

Robert Guetzkow commented

2020-08-06 01:05:08 +02:00

Added subscribers: @fclem, @rjg

Robert Guetzkow commented

2020-08-06 01:05:08 +02:00

I think this is for you @fclem the first commit that compiles and appears to have this problem is b1bfcf9f6b

I think this is for you @fclem the first commit that compiles and appears to have this problem is b1bfcf9f6b

Marcelo Demian Gómez commented

2020-08-07 18:25:49 +02:00

Added subscriber: @MarceloGomez

Andres Stephens commented

2020-08-08 19:54:13 +02:00

Added subscriber: @AndresStephens

Andres Stephens commented

2020-08-08 19:54:13 +02:00

Can reproduce, and can confirm also.

Fureloka-4 commented

2020-08-08 23:40:13 +02:00

Added subscriber: @Fureloka-4

Luke Graybill commented

2020-08-09 02:43:52 +02:00

Added subscriber: @Luke.Coop

Philipp Oeser commented

2020-08-10 10:07:13 +02:00

Added subscribers: @SteffenD, @lichtwerk

Jeroen Bakker commented

2020-08-10 12:04:03 +02:00

Added subscribers: @ronsn, @Jeroen-Bakker, @antoniov

Jeroen Bakker commented

2020-08-10 13:05:04 +02:00

Testing some code, seems like when drawing the world background doesn't take into account the alpha

diff --git a/source/blender/draw/engines/eevee/shaders/surface_frag.glsl b/source/blender/draw/engines/eevee/shaders/surface_frag.glsl
index e746acfdfa3..099b8039d95 100644
--- a/source/blender/draw/engines/eevee/shaders/surface_frag.glsl
+++ b/source/blender/draw/engines/eevee/shaders/surface_frag.glsl
@@ -47,7 +47,7 @@ void main()
   outRadiance = vec4(cl.radiance, alpha * holdout);
   outTransmittance = vec4(cl.transmittance, transmit) * holdout;
 #else
-  outRadiance = vec4(cl.radiance, holdout);
+  outRadiance = vec4(cl.radiance, alpha * holdout);
   ssrNormals = cl.ssr_normal;
   ssrData = cl.ssr_data;
 #  ifdef USE_SSS

Seems to fix it. Still there are issues with holdout rendering. it seems to be different as it doesn't create complete black holdouts.

Testing some code, seems like when drawing the world background doesn't take into account the alpha ``` diff --git a/source/blender/draw/engines/eevee/shaders/surface_frag.glsl b/source/blender/draw/engines/eevee/shaders/surface_frag.glsl index e746acfdfa3..099b8039d95 100644 --- a/source/blender/draw/engines/eevee/shaders/surface_frag.glsl +++ b/source/blender/draw/engines/eevee/shaders/surface_frag.glsl @@ -47,7 +47,7 @@ void main() outRadiance = vec4(cl.radiance, alpha * holdout); outTransmittance = vec4(cl.transmittance, transmit) * holdout; #else - outRadiance = vec4(cl.radiance, holdout); + outRadiance = vec4(cl.radiance, alpha * holdout); ssrNormals = cl.ssr_normal; ssrData = cl.ssr_data; # ifdef USE_SSS ``` Seems to fix it. Still there are issues with holdout rendering. it seems to be different as it doesn't create complete black holdouts.

Pierre Schiller commented

2020-08-13 00:55:27 +02:00

Added subscriber: @PierreSchiller