WorldTwoTextureBlend: Difference between revisions

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A partially transparent detail texture is blended on top of the base texture, according to the alpha channel of the detail texture.
{{cleanup|Bring to standards set by other shader pages, and mention other available shader parameters (what's {{cmd|$albedo}}?) See [https://github.com/ValveSoftware/source-sdk-2013/blob/master/src/materialsystem/stdshaders/worldtwotextureblend.cpp SDK source code].}}
{{note|Do not confuse this shader with the [[WorldVertexTransition]] shader used for displacement surfaces.}}
'''{{code|WorldTwoTextureBlend}}''' is a [[lightmap]] shader used to render two [[albedo]]s at the same time with a single material. It uses the {{cmd|$detail}} command to draw the uppermost albedo (unlike the command's normal usage). {{code|$detail}} must have an [[alpha channel]] if {{cmd|$basetexture}} is to be seen!


===Basic VMT Syntax===
{{note|Do not confuse this shader with {{code|[[WorldVertexTransition]]}}, which blends between textures but does not display one above the other.}}
{{stub}}
{{tip|Effectively equivalent to {{code|$detailblendmode 2}} (working around the blend mode's incompatibility with {{code|LightmappedGeneric}} and {{code|WorldVertexTransition}}), but with fewer available parameters.}}


WorldTwoTextureBlend ?
==Syntax==
<pre>
WorldTwoTextureBlend
{
    $basetexture    <texture>
    $detail        <texture with alpha channel>
    $detailscale    <float>// Behaves normally
}
</pre>


===Additional Parameters===  
==Supported effects==
* $basetexture <texture>
* {{cmd|$bumpmap}} (will not apply to {{code|$detail}})
* $detail <texture>
* {{cmd|$translucent}} and {{cmd|$alpha}}
* $detailscale <float>
* {{cmd|$seamless_scale}}
* $surfaceprop <type>
This shader does ''not'' support {{ent|$envmap}}.


==See also==
* {{ent|WorldVertexTransition}}
* {{ent|LightmappedGeneric}}
* {{cmd|$detailscale}}
* {{ent|LightmappedTwoTexture}}


 
[[Category:Shaders]]
[[Category:List of Shaders]]

Latest revision as of 20:35, 16 March 2025

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Bring to standards set by other shader pages, and mention other available shader parameters (what's $albedo?) See SDK source code.
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WorldTwoTextureBlend is a lightmap shader used to render two albedos at the same time with a single material. It uses the $detail command to draw the uppermost albedo (unlike the command's normal usage). $detail must have an alpha channel if $basetexture is to be seen!

Note.pngNote:Do not confuse this shader with WorldVertexTransition, which blends between textures but does not display one above the other.
Tip.pngTip:Effectively equivalent to $detailblendmode 2 (working around the blend mode's incompatibility with LightmappedGeneric and WorldVertexTransition), but with fewer available parameters.

Syntax

WorldTwoTextureBlend
{
    $basetexture    <texture>
    $detail         <texture with alpha channel>
    $detailscale    <float>// Behaves normally
}

Supported effects

This shader does not support $envmap.

See also