FAQ - Problems with rendering

Answers to typical questions regarding problems with rendering something

Objects came out red in the rendering!
Objects came out red in the rendering! This means you are using materials that are not supported by Corona. What you see is a warning overlay informing ...
Mon, 12 Nov, 2018 at 11:49 AM
Exposure changes when I start rendering!
Exposure changes when I start rendering! This is related to the Max sample intensity (MSI) parameter.  See: MSI The Max sample intensity parameter ...
Fri, 9 Aug, 2019 at 5:09 PM
My 3ds Max is very slow, it is hard to navigate in the viewport or use the material editor!
My 3ds Max is very slow, it is hard to navigate in the viewport or use the material editor! Note: please always contact us about this issue, even i...
Wed, 1 Apr, 2020 at 11:23 AM
Corona Converter script is not working!
Corona Converter script is not working! Note: the converter will only work if you have both Corona and the other renderer installed on the machine ...
Wed, 17 Mar, 2021 at 11:17 AM
Understanding sRGB, gamma, color values
Understanding sRGB, gamma, color values The original intention of this guide was to understand what the sRGB checkbox in the Corona Color Picker does. ...
Mon, 9 Jul, 2018 at 3:32 PM
Rendering resets / restarts infinitely!
Rendering resets / restarts infinitely! If you are experiencing an issue where Corona restarts the rendering each time you stop it, this might suggest that...
Mon, 9 Mar, 2015 at 4:58 PM
Corona renders black screen!
Corona renders black screen! If Corona renders black screen only, this might suggest that: There are no light sources in your scene Solution: add lig...
Thu, 4 Oct, 2018 at 10:32 AM
Objects with opacity maps are becoming gray when they are far away from camera!
Objects with opacity maps are becoming gray when they are far away from camera! Example  In this example we will be using a flat leaf model textured w...
Wed, 30 May, 2018 at 10:59 AM
I have found a bug!
I have found a bug! Sadly, this sometimes happens. The best way to notify us about the bug is reporting it via our support portal. Only this way ...
Tue, 5 Jan, 2016 at 1:04 PM
I am getting C++ Runtime Error R6025 - pure virtual function call
I am getting C++ Runtime Error R6025 - pure virtual function call This problem is known to appear on some of the nodes when using distributed rendering. ...
Mon, 18 Jan, 2016 at 2:35 PM