Gayane Posted June 3, 2020 Share Posted June 3, 2020 Guys, can you help me solve a problem? The thing is I want to render a sequence of pyro in mantra. Everything is alright in the render view, I see my sim perfectly, but when I try to save the frame as png - it's blank . Thank you! smoke_close_render.hipnc Quote Link to comment Share on other sites More sharing options...
anim Posted June 3, 2020 Share Posted June 3, 2020 properly I guess would be .exr but if you want to save .png, png is usually written with straight alpha, so by default houdini assumes the render is premultiplied and divides by alpha on save which in your case is 0, so you can either make sure your alpha is not 0 or add PNG Premultiplied (vm_image_png_frompremult) property to Mantra ROP and set it to Unpremultiplied, or save to .exr and process later as you please Quote Link to comment Share on other sites More sharing options...
Gayane Posted June 3, 2020 Author Share Posted June 3, 2020 Oh, thank you so much! It worked with exr and jpeg. Don't you mind if I ask where I can add PNG Premultiplied (vm_image_png_frompremult) property to Mantra? I don't think that I got that part. Quote Link to comment Share on other sites More sharing options...
anim Posted June 3, 2020 Share Posted June 3, 2020 select Mantra ROP and in parameter pane from COG menu select Edit Rendering Parameters you can either find it in the left list or type premult in the filter to narrow it down, select the property and press -> button and Accept you/ll find it in Images/Metadata tab Quote Link to comment Share on other sites More sharing options...
Gayane Posted June 3, 2020 Author Share Posted June 3, 2020 Thanks a lot! I got it!) Quote Link to comment Share on other sites More sharing options...
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