Description

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: rB854f73b4a231
Worked: b1bfcf9f6bc2^
Caused by rBda741013a1e1: EEVEE: GLSL refactor/cleanup

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.

Revisions and Commits

rB Blender
	rB6a6cb83eb306 Fix T79568 EEVEE: Film transparent not working

Related Objects

Mentioned In: T79792: Eevee Not Rendering with Transparent Background
T79605: Material Preview Icons Lost Transparency For Their Background
T79681: Eevee Film always opaque
Mentioned Here: rBda741013a1e1: EEVEE: GLSL refactor/cleanup
rBb1bfcf9f6bc2: GPU: Fix compilation error (missed one)
rBb5dcf746369e: Cycles: add support for rendering deformation motion blur from Alembic caches.
rB2ca006f6c179: Merge branch 'blender-v2.90-release'

Event Timeline

Everton Schneider (eversimo) created this task.Aug 5 2020, 8:30 PM

Everton Schneider (eversimo) updated the task description. (Show Details)

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: rBb5dcf746369e: Cycles: add support for rendering deformation motion blur from Alembic caches.

Evan Wilson (EAW) triaged this task as High priority.Aug 5 2020, 10:33 PM

I think this is for you @Clément Foucault (fclem) the first commit that compiles and appears to have this problem is rBb1bfcf9f6bc2ec25c6d80e7ba3b163d887ef01d8

Marcelo Demian Gómez (mdemiang) added a subscriber: Marcelo Demian Gómez (mdemiang).Aug 7 2020, 6:25 PM

Can reproduce, and can confirm also.

Fureloka added a subscriber: Fureloka.Aug 8 2020, 11:40 PM

Luke Graybill (Killarny) added a subscriber: Luke Graybill (Killarny).Aug 9 2020, 2:43 AM

Philipp Oeser (lichtwerk) updated the task description. (Show Details)Aug 10 2020, 10:06 AM

Philipp Oeser (lichtwerk) changed the subtype of this task from "Report" to "Bug".

Philipp Oeser (lichtwerk) mentioned this in T79681: Eevee Film always opaque.

Philipp Oeser (lichtwerk) merged a task: T79681: Eevee Film always opaque.

Philipp Oeser (lichtwerk) added subscribers: Steffen Dünner (SteffenD), Philipp Oeser (lichtwerk).

Jeroen Bakker (jbakker) edited projects, added BF Blender (2.90); removed BF Blender.Aug 10 2020, 11:12 AM

Jeroen Bakker (jbakker) edited projects, added BF Blender (2.91); removed BF Blender (2.90).

Jeroen Bakker (jbakker) mentioned this in T79605: Material Preview Icons Lost Transparency For Their Background.Aug 10 2020, 11:15 AM

Jeroen Bakker (jbakker) merged a task: T79605: Material Preview Icons Lost Transparency For Their Background.Aug 10 2020, 12:04 PM

Jeroen Bakker (jbakker) added subscribers: ronsn, Jeroen Bakker (jbakker), Antonio Vazquez (antoniov).

Jeroen Bakker (jbakker) updated the task description. (Show Details)Aug 10 2020, 12:14 PM

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.

Render from Viewport is working. But it is not working with passes or nodes in the compositor either.

Marcin Twarowski (Tvaroog) mentioned this in T79792: Eevee Not Rendering with Transparent Background.Aug 14 2020, 10:13 PM

Robert Guetzkow (rjg) merged a task: T79792: Eevee Not Rendering with Transparent Background.Aug 14 2020, 10:33 PM

Robert Guetzkow (rjg) added subscribers: Alvin Manning (amannin), Marcin Twarowski (Tvaroog).

Evan Wilson (EAW) merged a task: T79792: Eevee Not Rendering with Transparent Background.Aug 14 2020, 10:38 PM

Robert Guetzkow (rjg) merged a task: T79826: Eevee not exporting transparent images.Aug 16 2020, 6:07 PM

Robert Guetzkow (rjg) added a subscriber: Zohaib (ZohaibAli).

Clément Foucault (fclem) closed this task as Resolved by committing rB6a6cb83eb306: Fix T79568 EEVEE: Film transparent not working.Aug 18 2020, 12:27 PM

Clément Foucault (fclem) claimed this task.

Clément Foucault (fclem) added a commit: rB6a6cb83eb306: Fix T79568 EEVEE: Film transparent not working.