OGL preview render speed regression #34817

New Issue

Daniel Salazar · 2013-03-30T23:16:09+01:00

Daniel Salazar commented

2013-03-30 23:16:09 +01:00

%%%--- Operating System, Graphics card ---

Linux 64
GTX 480 SC

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

2.6 was fast, same speed as viewport animation playback

2.61 and up is slow

- Short description of error ---

OGL render is very slow, up to 3 secs per frame on basic animation files

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

Press the OGL render animation button in the 3D view in the attached file

%%%

%%%--- Operating System, Graphics card --- Linux 64 GTX 480 SC - Blender version with error, and version that worked --- 2.6 was fast, same speed as viewport animation playback 2.61 and up is slow - Short description of error --- OGL render is very slow, up to 3 secs per frame on basic animation files - Steps for others to reproduce the error (preferably based on attached .blend file) --- Press the OGL render animation button in the 3D view in the attached file %%%

Daniel Salazar commented

2013-03-30 23:16:09 +01:00

Changed status to: 'Open'

Sergey Sharybin commented

2013-04-01 10:39:03 +02:00

%%%Checked on code and logs. It's caused by svn rev42275 whic hwas a fix for #27981.

For proper rendering it's linearization of float buffer is needed, which takes time. Could be optimized (using multi-threading or GLSL) but would not consider this is a bug.

Thanks for the report anyway.%%%

%%%Checked on code and logs. It's caused by svn rev42275 whic hwas a fix for #27981. For proper rendering it's linearization of float buffer is needed, which takes time. Could be optimized (using multi-threading or GLSL) but would not consider this is a bug. Thanks for the report anyway.%%%

Ton Roosendaal commented

2013-04-07 19:33:29 +02:00

%%%Hey sergey, would your awesome glsl code also work for this case?%%%

Sergey Sharybin commented

2013-04-07 19:49:39 +02:00

%%%Linearization already happens with GLSL. The only possible speed regression could be is file saving, which would not use GLSL for color space conversion and i do not want to use it there actually.%%%

Brecht Van Lommel commented

2013-04-08 17:38:38 +02:00

%%%Reopened and assigning to self, will look into it to see if I can improve performance here.%%%

Brecht Van Lommel commented

2013-04-11 17:18:06 +02:00

%%%Improved performance in svn now, about 1.2x slower than 2.60 still, but that's a lot better than 5x slower.

Also note enabling anti-aliasing will slow things down, it's disabled in the attached file, but probably good to remember.%%%

%%%Improved performance in svn now, about 1.2x slower than 2.60 still, but that's a lot better than 5x slower. Also note enabling anti-aliasing will slow things down, it's disabled in the attached file, but probably good to remember.%%%

Brecht Van Lommel commented

2013-04-11 17:18:06 +02:00

Changed status from 'Open' to: 'Resolved'

Brecht Van Lommel closed this issue

2013-04-11 17:18:06 +02:00

Daniel Salazar commented

2013-04-11 22:00:07 +02:00

%%%Thank you! Very much improved.%%%

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OGL preview render speed regression #34817