$envmapmask: Difference between revisions
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ShiroDkxtro2 (talk | contribs) m (Added caveats, made the page use 'Modern' templates and rewrote some information to add clarity) |
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{{Shaderparam|$envmapmask}} It defines a specular mask which affects how strongly each pixel of a material reflects light from the {{ent|$envmap}}. The mask should be a grayscale image in which entirely reflective areas are white and entirely matte areas are black. For diffuse type specularity which does not rely on <code>$envmap</code>, see {{ent|$phong}}. | {{Shaderparam|$envmapmask}} It defines a specular mask which affects how strongly each pixel of a material reflects light from the {{ent|$envmap}}. The mask should be a grayscale image in which entirely reflective areas are white and entirely matte areas are black. For diffuse type specularity which does not rely on <code>$envmap</code>, see {{ent|$phong}}. | ||
{{ | {{ModernBug|In {{src07|2}} games, using an <code>$envmapmask</code> which is not stored in a subfolder will cause the texture to fail loading in-game.}} | ||
{{ | {{ModernWarning|<code>$envmapmask</code> will not work with materials using {{ent|$bumpmap}}. Except on {{ent|VertexLitGeneric}}{{mapbase|only}} and {{ent|LightmappedGeneric}}{{csgo|only}}. See [[#Alternative_methods]].}} | ||
==VMT syntax example== | ==VMT syntax example== | ||
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{{MatParam|$basealphaenvmapmask|bool|Use the alpha channel of the {{code|$basetexture}} as the specular mask.}} | {{MatParam|$basealphaenvmapmask|bool|Use the alpha channel of the {{code|$basetexture}} as the specular mask.}} | ||
{{ | {{ModernNote| | ||
* Alpha channels embedded in {{code|$basetexture}} work in reverse. Transparent areas are reflective, opaque areas are matte. This is because, say, a window texture's alpha mask would be mostly black to allow for transparency -- yet that black part of the mask would also be the most reflective part. To avoid having to duplicate a texture file simply to invert the alpha mask, you can use this material parameter instead. | * Alpha channels embedded in {{code|$basetexture}} work in reverse. Transparent areas are reflective, opaque areas are matte. This is because, say, a window texture's alpha mask would be mostly black to allow for transparency -- yet that black part of the mask would also be the most reflective part. To avoid having to duplicate a texture file simply to invert the alpha mask, you can use this material parameter instead. | ||
* The alpha channel '''''is not''''' inverted in the Source 2007 engine ''and'' {{csgo}} for models, but the alpha channel '''''is''''' inverted for brushes! | * The alpha channel '''''is not''''' inverted in the Source 2007 engine ''and'' {{csgo|2}} for models, but the alpha channel '''''is''''' inverted for brushes! | ||
* {{l4d2}} auto enables if '''$envmap''' is present. Opaque areas are reflective while transparent are matte. Set as [[bool|true]] to invert {{code|$basetexture}} alpha channel behaviour. This allow {{code|[[$bumpmap]]}} have a dedicated {{code|[[$phong]]}} mask, when material transparency is not needed.}} | * {{l4d2}} auto enables if '''$envmap''' is present. Opaque areas are reflective while transparent are matte. Set as [[bool|true]] to invert {{code|$basetexture}} alpha channel behaviour. This allow {{code|[[$bumpmap]]}} have a dedicated {{code|[[$phong]]}} mask, when material transparency is not needed.}} | ||
{{ | {{ModernBug| | ||
* In CSGO, this parameter breaks materials using $translucent. Use {{code|$envmapmask}} instead. | * In CSGO, this parameter breaks materials using $translucent. Use {{code|$envmapmask}} instead.<br> | ||
* In all of: {{gmod}}{{src13}}{{tf2}}{{as}}{{csgo}} on {{ent|VertexLitGeneric}} ('''Without''' {{ent|$phong}}), {{ent|WorldVertexTransition}} and {{ent|LightmappedGeneric}}, <code>$basealphaenvmapmask</code> cannot be used with {{ent|$bumpmap}}. | * In all of: {{gmod}}{{src13}}{{tf2}}{{as}}{{csgo}} on {{ent|VertexLitGeneric}} ('''Without''' {{ent|$phong}}), {{ent|WorldVertexTransition}} and {{ent|LightmappedGeneric}}, <code>$basealphaenvmapmask</code> cannot be used with {{ent|$bumpmap}}.<br> | ||
* In all of: {{gmod}}{{src13}}{{tf2}}{{as}}{{csgo}} on {{ent|LightmappedGeneric}} and {{ent|WorldVertexTransition}}, <code>$basealphaenvmapmask</code> cannot be used with {{ent|$selfillum}}, {{ent|$seamless_detail}} or {{ent|$distancealpha}}. | * In all of: {{gmod}}{{src13}}{{tf2}}{{as}}{{csgo}} on {{ent|LightmappedGeneric}} and {{ent|WorldVertexTransition}}, <code>$basealphaenvmapmask</code> cannot be used with {{ent|$selfillum}}, {{ent|$seamless_detail}} or {{ent|$distancealpha}}.<br> | ||
* In {{csgo}}, on {{ent|LightmappedGeneric}} and {{ent|WorldVertexTransition}}, <code>$basealphaenvmapmask</code> cannot be used with | * In {{csgo}}, on {{ent|LightmappedGeneric}} and {{ent|WorldVertexTransition}}, <code>$basealphaenvmapmask</code> cannot be used with [[$detail#Parameters and Effects|$detailblendmode]] "9" or {{ent|$envmapanisotropy}}.<br> | ||
* In {{csgo}}, on {{ent|Lightmapped_4WayBlend}}, <code>$basealphaenvmapmask</code> cannot be used with {{ent|$selfillum}}.}} | * In {{csgo}}, on {{ent|Lightmapped_4WayBlend}}, <code>$basealphaenvmapmask</code> cannot be used with {{ent|$selfillum}}. | ||
* This cannot be used with {{ent|$bumpmap}} on {{ent|LightmappedGeneric}}}} | |||
<br>{{MatParam|$normalmapalphaenvmapmask|bool|Use the alpha channel of the {{code|$bumpmap}} or {{code|$normalmap}} as the specular mask. | <br>{{MatParam|$normalmapalphaenvmapmask|bool|Use the alpha channel of the {{code|$bumpmap}} or {{code|$normalmap}} as the specular mask. | ||
{{ | {{ModernWarning|Using this in combination with {{code|[[$phong|$basemapalphaphongmask]]}} or {{code|[[$phong|$basemapluminancephongmask]]}} will set the mask used for the {{ent|$envmap}} to be those instead. <br> | ||
{{ | '''There are additional caveats''' when using {{ent|$phong}}. See its entry for more information about possible issues.}} | ||
* In all of: {{gmod}}{{src13}}{{tf2}}{{as}}{{csgo}} on {{ent|VertexLitGeneric}} ('''Without''' {{ent|$phong}}), <code>$normalmapalphaenvmapmask</code> cannot be used with {{ent|$selfillumfresnel}}. | }} | ||
* In {{csgo}}, on {{ent|LightmappedGeneric}} and {{ent|WorldVertexTransition}} {{code|[[$normalmapalphaenvmapmask]]}} cannot be used with | {{ModernBug| | ||
<br>{{MatParam|$selfillum_envmapmask_alpha|float|Use the alpha channel of the {{code|$envmapmask}} as the {{ent|$selfillum}} mask instead of {{code|$basetexture}}'s alpha. | * In all of: {{gmod}}{{src13}}{{tf2}}{{as}}{{csgo}} on {{ent|VertexLitGeneric}} ('''Without''' {{ent|$phong}}), <code>$normalmapalphaenvmapmask</code> cannot be used with [[Glowing_Textures#.24selfillum|$selfillumfresnel]].<br> | ||
:{{note| Using <code>$normalmapalphaenvmapmask</code> with {{ent|$phong}} and [[Glowing_Textures#.24selfillum|$selfillumfresnel]] has special caveats that should be considered. Check {{ent|$phong}} for for more information.}} | |||
* In {{csgo}}, on {{ent|LightmappedGeneric}} and {{ent|WorldVertexTransition}}, {{code|[[$normalmapalphaenvmapmask]]}} cannot be used with [[$detail#Parameters and Effects|$detailblendmode]] "9" or {{ent|$envmapanisotropy}}.}}<br> | |||
<br>{{MatParam|$selfillum_envmapmask_alpha|float|Use the alpha channel of the {{code|$envmapmask}} as the {{ent|$selfillum}} mask instead of {{code|$basetexture}}'s alpha.<br> | |||
{{ModernBug|This Parameter replaces {{code|$selfillum}}. If both are used it will result in an error. The material will not render.}} | |||
{{todo|This is not an alternative method to <code>$envmapmask</code> and in fact that parameter is required to use this. <code>Move it to Additional Parameters</code> and pray links on other pages don't break.}}}} | |||
<br>{{MatParam|$envmapmaskintintmasktexture|bool|Use the red channel of the {{ent|$tintmasktexture}} as the specular mask.|only={{csgo}}|shaders=VertexLitGeneric}} | <br>{{MatParam|$envmapmaskintintmasktexture|bool|Use the red channel of the {{ent|$tintmasktexture}} as the specular mask.|only={{csgo}}|shaders=VertexLitGeneric}} | ||
Revision as of 21:35, 20 February 2023
Template:Shaderparam It defines a specular mask which affects how strongly each pixel of a material reflects light from the $envmap. The mask should be a grayscale image in which entirely reflective areas are white and entirely matte areas are black. For diffuse type specularity which does not rely on $envmap, see $phong.
Template:ModernBug
Template:ModernWarning
VMT syntax example
$envmapmask <texture>
VertexLitGeneric { $envmap env_cubemap $envmapmask "props/tvscreen_test" }
Additional parameters
npc_cscanner's mask.
$envmapmasktransform
$envmapmaskscale
$envmapmaskframe
CS:GO WorldVertexTransition Parameters
$envmapmask2
$envmapmasktransform2
$envmapframe2
Alternative methods
Rather than creating a whole new texture for a specular mask, you can embed one into the alpha channel of the $basetexture or $bumpmap. Model materials with $bumpmap must do this. Unfortunately, it won't reduce memory usage.
If you do use these commands, transformations and other such parameters applied to $basetexture / $bumpmap will also apply to the specular mask.
$basealphaenvmapmask
Template:ModernNote
Template:ModernBug
$normalmapalphaenvmapmask
Template:ModernBug
$selfillum_envmapmask_alpha
$envmapmaskintintmasktexture
Merging Specular Level into Normal Alpha in 3ds Max
To merge a Specular Level map into the Normal Map alpha, you can create a Composite Map node with the normal map in Layer 1 and the specular map in Mask 1. Then right-click the composite map, click Render Map and save this new image to file (remembering to keep the Gamma at 1.0 and using 32 bits per pixel in the save options).
These steps are automated in the Alpha Spec tool in Wall Worm 2.72+.
See Also
- $basetexture
- $envmap (environment map)
- $phong (diffuse reflection)
- $selfillum