About openGL rendering of smoke modifier #36441

New Issue

perfection cat · 2013-08-12T02:15:50+02:00

perfection cat commented

2013-08-12 02:15:50 +02:00

%%%--- Operating System, Graphics card ---
Windows XP/SP3 32bits
Nvidia Geforce 9500GT

- Blender version with error, and version that worked ---

version 2.68a r59028

- Short description of error ---

When I use internal renderer of blender, work is different.

- Steps for others to reproduce the error (preferably based on attached .blend file) ---

When I use internal renderer of blender, work is different.
Is different; when work.
I make rendering in F12.
Naturally smoke is not drawn.
I make rendering in openGL.
smoke should be drawn, but an initial frame seemed to be drawn.
I make rendering again in openGL.
smoke is drawn definitely.

When I use Cycles renderer, such a thing does not occur.
%%%

%%%--- Operating System, Graphics card --- Windows XP/SP3 32bits Nvidia Geforce 9500GT - Blender version with error, and version that worked --- version 2.68a r59028 - Short description of error --- When I use internal renderer of blender, work is different. - Steps for others to reproduce the error (preferably based on attached .blend file) --- When I use internal renderer of blender, work is different. Is different; when work. I make rendering in F12. Naturally smoke is not drawn. I make rendering in openGL. smoke should be drawn, but an initial frame seemed to be drawn. I make rendering again in openGL. smoke is drawn definitely. When I use Cycles renderer, such a thing does not occur. %%%

perfection cat commented

2013-08-12 02:15:50 +02:00

Changed status to: 'Open'

perfection cat commented

2013-08-12 03:49:43 +02:00

%%%I attached a file%%%

Jeffrey commented

2013-08-12 08:44:05 +02:00

%%%OpenGL and BI rendering work here; smoke is not supported in Cycles yet. If you're referring to why you can't see the smoke when rendering, it's because you didn't have a material set up to visualize the volume.

Follow the directions here to get a basic smoke material and manipulate to get the desired effect: http://wiki.blender.org/index.php/Doc:2.6/Manual/Physics/Smoke/Material

r59074 x64 (SVN trunk) on Win7%%%

%%%OpenGL and BI rendering work here; smoke is not supported in Cycles yet. If you're referring to why you can't see the smoke when rendering, it's because you didn't have a material set up to visualize the volume. Follow the directions here to get a basic smoke material and manipulate to get the desired effect: http://wiki.blender.org/index.php/Doc:2.6/Manual/Physics/Smoke/Material r59074 x64 (SVN trunk) on Win7%%%

perfection cat commented

2013-08-12 09:44:38 +02:00

%%%It is not such a thing to point out here.
I can watch smoke by using smoke modifier.
I point out that a different image is produced when I paint pictures in opengl renderer in the next using internal renderer.%%%

%%%It is not such a thing to point out here. I can watch smoke by using smoke modifier. I point out that a different image is produced when I paint pictures in opengl renderer in the next using internal renderer.%%%

perfection cat commented

2013-08-12 09:51:00 +02:00

%%%The phenomenon is not caused even if I do a similar thing in the state that chose Cycles renderer with a rendering engine.
It occurs when I carry it out in the state that chose internal renderer with a rendering engine.%%%

%%%The phenomenon is not caused even if I do a similar thing in the state that chose Cycles renderer with a rendering engine. It occurs when I carry it out in the state that chose internal renderer with a rendering engine.%%%

perfection cat commented

2013-08-12 11:07:47 +02:00

%%%Because I took an animation, I attach it.
It is the file of the wmv format.%%%

%%%Because I took an animation, I attach it. It is the file of the wmv format.%%%

Jeffrey commented

2013-08-12 12:17:20 +02:00

%%%I understand what you are saying now.

Using the video as a guide, I have reproduced the error, but my result is slightly different. I can also confirm this in 2.68a and in SVN trunk, but not in previous versions.

My steps to reproduce the error:
Open blend file and bake the smoke simulation to ensure it is cached.
Render in openGL (it will render as expected).
Ensure the selected render engine is Blender Render and render. It will render the domain as the cube (expected).
Immediately render with openGL again. My result was half-opacity smoke over the icosphere. This is the erroneous render.
Immediately render with openGL again. It will render as expected (identical to the first openGL render).

I am able to reproduce this multiple times without reloading the file. Simply render with Blender Render with F12 again followed by another openGL render. Changing frames between the F12 render and the openGL render does not produce the problem. Following the same steps with Cycles enabled does not reproduce the problem.

I will try to find the commit or time period when this was introduced. %%%

%%%I understand what you are saying now. Using the video as a guide, I have reproduced the error, but my result is slightly different. I can also confirm this in 2.68a and in SVN trunk, but not in previous versions. - My steps to reproduce the error: Open blend file and bake the smoke simulation to ensure it is cached. Render in openGL (it will render as expected). Ensure the selected render engine is Blender Render and render. It will render the domain as the cube (expected). Immediately render with openGL again. My result was half-opacity smoke over the icosphere. This is the erroneous render. Immediately render with openGL again. It will render as expected (identical to the first openGL render). I am able to reproduce this multiple times without reloading the file. Simply render with Blender Render with F12 again followed by another openGL render. Changing frames between the F12 render and the openGL render does not produce the problem. Following the same steps with Cycles enabled does not reproduce the problem. I will try to find the commit or time period when this was introduced. %%%

Jeffrey commented

2013-08-12 14:09:23 +02:00

%%%The commit that introduced this behavior is 57377.

I have been able to reproduce in 57377 and later with both MSVC 2008 and MinGW-w64 build systems.

Win7 x64
GTX 560 Ti 2-GB version%%%

%%%The commit that introduced this behavior is 57377. I have been able to reproduce in 57377 and later with both MSVC 2008 and MinGW-w64 build systems. Win7 x64 GTX 560 Ti 2-GB version%%%

Brecht Van Lommel commented

2013-08-12 18:35:54 +02:00

%%%I couldn't redo this problem (OS X, NVidia GT 650M), but maybe I don't understand it well.

When you say render, is that a single frame or an animation render?%%%

%%%I couldn't redo this problem (OS X, NVidia GT 650M), but maybe I don't understand it well. When you say render, is that a single frame or an animation render?%%%

Jeffrey commented

2013-08-13 01:56:54 +02:00

%%%It's a single frame render. %%%

perfection cat commented

2013-08-16 03:42:50 +02:00

%%%I'm sorry.
There was an old custom called "OBON" in Japan and was absent for these past three days.
There is a thing to get to me just to have understood that it is not a problem peculiar to my environment.%%%

%%%I'm sorry. There was an old custom called "OBON" in Japan and was absent for these past three days. There is a thing to get to me just to have understood that it is not a problem peculiar to my environment.%%%

perfection cat commented

2013-08-18 05:41:47 +02:00

%%%This occurs by the rendering of the animation of opengl.%%%

Ton Roosendaal commented

2013-08-23 18:49:46 +02:00

%%%Miika: could you check on this?%%%

Miika Hamalainen commented

2013-08-23 19:39:41 +02:00

%%%Seems like domain object has incorrect inverse matrix during the first render. So I suppose not everything gets properly updated between renders.%%%

Brecht Van Lommel commented

2013-08-24 00:57:50 +02:00

%%%Fix in svn revision 59446, thanks for the report.%%%

Brecht Van Lommel commented

2013-08-24 00:57:50 +02:00

Changed status from 'Open' to: 'Resolved'

Brecht Van Lommel closed this issue

2013-08-24 00:57:50 +02:00

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About openGL rendering of smoke modifier #36441