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Added premult alpha blending to 3D (spatial) shaders.

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Co-authored-by: jitspoe <jitspoe@yahoo.com>
Co-authored-by: Clay John <claynjohn@gmail.com>
This commit is contained in:
QbieShay 2023-12-01 15:57:29 +01:00
parent d282e4f0e6
commit 41a2b0e83e
14 changed files with 76 additions and 6 deletions
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3
doc/classes/BaseMaterial3D.xml
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@ -609,6 +609,9 @@
<constant name="BLEND_MODE_MUL" value="3" enum="BlendMode">
The color of the object is multiplied by the background.
</constant>
<constant name="BLEND_MODE_PREMULT_ALPHA" value="4" enum="BlendMode">
The color of the object is added to the background and the alpha channel is used to mask out the background. This is effectively a hybrid of the blend mix and add modes, useful for FX like fire where you want the flame to add but the smoke to mix. By default, this works with unshaded materials using premultiplied textures. For shaded materials, use the PREMUL_ALPHA_FACTOR built-in so that lighting can be modulated as well.
</constant>
<constant name="ALPHA_ANTIALIASING_OFF" value="0" enum="AlphaAntiAliasing">
Disables Alpha AntiAliasing for the material.
</constant>