Texture shadows: Difference between revisions
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Bug:
VRAD)
Important:Only the alpha channels of the textures are used for shadow casting calculations. For example, stained glass windows using the Refract shader will be treated as opaque, as will materials using
Bug:VRAD is unable to calculate texture shadows for textures using DXT3 compression. Use DXT5 instead. (tested in: 
)
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{{only|{{slammin}}}} To enable brush and displacement texture shadows, add {{code|-worldtextureshadows}} (and optionally {{code|-translucentshadows}} for translucent shadows) to the [[VRAD]] parameters. | {{only|{{slammin}}}} To enable brush and displacement texture shadows, add {{code|-worldtextureshadows}} (and optionally {{code|-translucentshadows}} for translucent shadows) to the [[VRAD]] parameters. | ||
{{Bug|{{slammin}} {{code|-worldtextureshadows}} and {{code|-translucentshadows}} are non-functional.|tested=newer versions of {{slammin}} VRAD}} | {{Bug|{{slammin}} {{code|-worldtextureshadows}} and {{code|-translucentshadows}} are non-functional.|tested=newer versions of {{slammin}} VRAD}} | ||
{{modernImportant|Only the alpha channels of the textures are used for shadow casting calculations. For example, stained glass windows using the {{ent|Refract}} shader will be treated as opaque, as will materials using {{cmd|$additive}} without {{cmd|translucent}}.}} | {{modernImportant|Only the alpha channels of the textures are used for shadow casting calculations. For example, stained glass windows using the {{ent|Refract}} shader will be treated as opaque, as will materials using {{cmd|$additive}} without {{cmd|$translucent}}.}} | ||
{{bug|VRAD is unable to calculate texture shadows for textures using DXT3 compression. Use DXT5 instead.|tested={{hl2dm}}}} | {{bug|VRAD is unable to calculate texture shadows for textures using DXT3 compression. Use DXT5 instead.|tested={{hl2dm}}}} | ||
Revision as of 05:31, 21 January 2025
Texture shadows allow transparent model surfaces (not brushes or displacements!) to cast baked lightmap shadows.
To enable model texture shadows, add -TextureShadows to the VRAD parameters.
(only in ) To enable brush and displacement texture shadows, add -worldtextureshadows (and optionally -translucentshadows for translucent shadows) to the VRAD parameters.
Bug: -worldtextureshadows and -translucentshadows are non-functional. (tested in: newer versions of VRAD)Important:Only the alpha channels of the textures are used for shadow casting calculations. For example, stained glass windows using the Refract shader will be treated as opaque, as will materials using $additive without $translucent.Bug:VRAD is unable to calculate texture shadows for textures using DXT3 compression. Use DXT5 instead. (tested in: )Models
In QC
Add $casttextureshadows to the model's QC file to enable texture shadows.
Example:
$modelname "props_grate/metal_grate_64.mdl" $model body "metal_grate_64.smd" $staticprop $cdmaterials "metal/" $surfaceprop "metal" $contents "grate" $casttextureshadows
lights.rad
Texture shadows can be enabled on any prop without editing and recompiling the QC through the RAD file.
Example
forcetextureshadow props_underground/walkway_128a.mdl forcetextureshadow props_underground/walkway_128b.mdl