VrayBitmap Reload in maxscript

V-Ray V-Ray for 3ds Max SDK
1

Hello, Support.
I’m facing a little issue in my script. The script changes filenames of bitmaps (including VrayBitmaps) and in order to make it fast I would like to disable ref messages temporarily (using disableRefMsgs). The problem I have is that VrayBitmap (and only VrayBitmap) doesn’t update after I enable ref messages using enableRefMsgs. Ofc I tried to run notifyDependents and it also doesn’t help.
Is there any hidden way to force VrayBitmap to reload?

You may say that final time will not change because I still need to reload bitmaps in the end and it’s a good point, but I still would like to have control over reloading process.

2

Can you post a simple version of the script? I just tested this and it seems to update automatically for both Bitmaps and VRayBitmaps.

3

Hi. How did you test it? Changing bitmap filename should be between disableRefMsgs​() and enableRefMsgs​()

4 
for each in SceneMaterials where classof each == VRayMtl do (
if classof each.texmap_diffuse == VRayBitmap then (
each.texmap_diffuse.HDRIMapName = "xxx.png"
)
else (
each.texmap_diffuse.fileName = "xxx.png"
)
)​

I just did a quick test. Certainly not the way you use it.

5

Thanks. Simplified version would look sth like this:


disableRefMsgs()
(getClassInstances vraybitmap).filename = "xxx.png"
enableRefMsgs()

​

6

After some troubleshooting I found out that this works well:


newBitmap = bitmaptexture()
newBitmap.filename = "C:\Users\Alexander\Desktop\\x.png"

for each in (getclassinstances BitmapTexture) do (
each.filename = newBitmap.filename
)
for each in (getclassinstances VRayBitmap) do (
each.HDRIMapName = newBitmap.filename
)
newBitmap.reload()​

Rather than trying to refresh the image through the Bitmap/VRayBitmap node, we reload the newly created bitmap.
The difference between native Bitmaps and V-Ray bitmaps seems to be evident when checking the bitmap parameter of both:


(getclassinstances bitmaptex)[1].bitmap -> this references a Bitmap class
(getclassinstances vraybitmap)[1].bitmap -> this references a String

This is most likely why your method of updating does not work.

7

Sorry but I guess you didn’t get the issue. Probably my fault.
What I need is the same “reload()” method but for vraybitmaps, if there is such a method ofc. If not, then I just can’t change filename with disabled ref messages to speedup the process.

8

I’ll ask the devs.

9

No such option exists at this point, however, I’ve logged an improvement request (internal bug-tracker id: VMAX-14280) on your behalf.