PBR materials and transparent textures

Guillaume CHAFFAROD's picture
Guillaume CHAFFAROD
Thu, 06/06/2024 - 17:14
Forums: 
Visualization

Hello community.
Is there any way to use transparent textures for PBR materials diffuse and let transparent section be really transparent on shapes where the material is applied ?

I use the texture in the attached picture, but it gives me the result of the other attached picture, pbr_occt.png (emissive is black).

Thank you for your answers ;)

Attachments: 
Image icon pbr_occt.png
Image icon green_checkerboard.png
gkv311 n's picture
gkv311 n
Thu, 06/06/2024 - 17:39

You need to set Graphic3d_Aspects::AlphaMode() property to desired option - like Graphic3d_AlphaMode_Blend, Mask or MaskBlend, depending on your scenario.

Guillaume CHAFFAROD's picture
Guillaume CHAFFAROD
Thu, 06/06/2024 - 18:13

Thank you very much.
I still have a problem. I can get the texture alpha when using the shading model Graphic3d_TypeOfShadingModel_Phong, but when using the shading model Graphic3d_TypeOfShadingModel_Pbr, it has no effect (see attached pictures). Do you know how can I apply the behaviour to pbr shading model please ?

Attachments: 
Image icon phong.png
Image icon pbr.png
Guillaume CHAFFAROD's picture
Guillaume CHAFFAROD
Thu, 06/06/2024 - 18:26

Ooh, I just saw that if the PBR material Metallic is lower than 0.49, it's transparent, but greater or equal to this value, it's not... xD

gkv311 n's picture
gkv311 n
Thu, 06/06/2024 - 18:51

Yeah, metals usually cannot be made translucent...

Guillaume CHAFFAROD's picture
Guillaume CHAFFAROD
Thu, 06/06/2024 - 19:05

OK, I will do with it. Thank you very much for your help.