https://community.graphisoft.com/t5/Visualization/alpha-map/m-p/273749#M3552 <DIV class="actalk-migrated-content"><T>Hi!<BR /> I use tif texture with alpha map.<BR /> Alpha map is white background with black dots.<BR /> I need it to get perforations on my surface.<BR /> with internal engine everything works well.<BR /> I have those perforations and the rest is corten solid surfaace.<BR /> Problem starts to emerge when openGL engine is turned on. I still have those perforations, but the rest of the surface becomes transparent.<BR /> I would never bother with that, but when exported to BimX a get this wierd situation.<BR /> What should I do to fix that?<BR /> <BR /> on attached picture this perforated surface is on the left. right side is the same material but without that alpha.<BR /> <BR /> Once again, my alpha channel is white (255,255,255) and with black dots (0,0,0).</T></DIV><BR /><span class="lia-inline-image-display-wrapper" image-alt="Screenshot_2017-04-01-22-05-51_resized 2.jpg" style="width: 999px;"><img src="https://community.graphisoft.com/t5/image/serverpage/image-id/15076iAE91DE36581E2EDD/image-size/large?v=v2&amp;px=999" role="button" title="Screenshot_2017-04-01-22-05-51_resized 2.jpg" alt="Screenshot_2017-04-01-22-05-51_resized 2.jpg" /></span> Thu, 11 May 2023 10:49:29 GMT Anonymous 2023-05-11T10:49:29Z https://community.graphisoft.com/t5/Visualization/alpha-map/m-p/273749#M3552 <DIV class="actalk-migrated-content"><T>Hi!<BR /> I use tif texture with alpha map.<BR /> Alpha map is white background with black dots.<BR /> I need it to get perforations on my surface.<BR /> with internal engine everything works well.<BR /> I have those perforations and the rest is corten solid surfaace.<BR /> Problem starts to emerge when openGL engine is turned on. I still have those perforations, but the rest of the surface becomes transparent.<BR /> I would never bother with that, but when exported to BimX a get this wierd situation.<BR /> What should I do to fix that?<BR /> <BR /> on attached picture this perforated surface is on the left. right side is the same material but without that alpha.<BR /> <BR /> Once again, my alpha channel is white (255,255,255) and with black dots (0,0,0).</T></DIV><BR /><span class="lia-inline-image-display-wrapper" image-alt="Screenshot_2017-04-01-22-05-51_resized 2.jpg" style="width: 999px;"><img src="https://community.graphisoft.com/t5/image/serverpage/image-id/15076iAE91DE36581E2EDD/image-size/large?v=v2&amp;px=999" role="button" title="Screenshot_2017-04-01-22-05-51_resized 2.jpg" alt="Screenshot_2017-04-01-22-05-51_resized 2.jpg" /></span> Thu, 11 May 2023 10:49:29 GMT https://community.graphisoft.com/t5/Visualization/alpha-map/m-p/273749#M3552 Anonymous 2023-05-11T10:49:29Z https://community.graphisoft.com/t5/Visualization/alpha-map/m-p/273750#M3553 Hi There<BR /> <BR /> I have done something similar but I couldnt get an alpha channel to work in AC21 with cinerender engine with black and white so I have a white screen with transparent holes and saved as a png for internal engine, but im not sure how to apply a texture like you have applied the corten steel Mon, 12 Feb 2018 23:28:26 GMT https://community.graphisoft.com/t5/Visualization/alpha-map/m-p/273750#M3553 Anonymous 2018-02-12T23:28:26Z