Skip to content

Support alpha in Standard Surface to glTF PBR translation #2591

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Draft
wants to merge 1 commit into
base: main
Choose a base branch
from
Draft

Support alpha in Standard Surface to glTF PBR translation #2591

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
13 changes: 13 additions & 0 deletions libraries/bxdf/translation/standard_surface_to_gltf_pbr.mtlx
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@
<input name="coat_roughness" type="float" value="0.1" />
<input name="emission" type="float" value="0" />
<input name="emission_color" type="color3" value="1, 1, 1" />
<input name="opacity" type="color3" value="1, 1, 1" />

<output name="base_color_out" type="color3" />
<output name="metallic_out" type="float" />
Expand All @@ -33,6 +34,7 @@
<output name="clearcoat_out" type="float" />
<output name="clearcoat_roughness_out" type="float" />
<output name="emissive_out" type="color3" />
<output name="alpha_out" type="float" />
</nodedef>

<nodegraph name="NG_standard_surface_to_gltf_pbr" nodedef="ND_standard_surface_to_gltf_pbr">
Expand Down Expand Up @@ -191,6 +193,16 @@
<input name="in2" type="float" interfacename="emission" />
</multiply>

<!-- Opacity -->
<luminance name="opacity_luminance" type="color3">
<input name="in" type="color3" interfacename="opacity" />
</luminance>

<extract name="opacity_luminance_float" type="float">
<input name="in" type="color3" nodename="opacity_luminance" />
<input name="index" type="integer" value="0" />
</extract>

<output name="base_color_out" type="color3" nodename="base_color" />
<output name="metallic_out" type="float" nodename="metallic" />
<output name="roughness_out" type="float" nodename="roughness" />
Expand All @@ -204,6 +216,7 @@
<output name="clearcoat_out" type="float" nodename="clearcoat" />
<output name="clearcoat_roughness_out" type="float" nodename="clearcoat_roughness" />
<output name="emissive_out" type="color3" nodename="emissive" />
<output name="alpha_out" type="float" nodename="opacity_luminance_float" />

</nodegraph>
</materialx>