$treesway: Difference between revisions
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{{bug|In {{mapbase}}, using a shadow-casting [[env_projectedtexture|projected texture]] will cause shadows not reacting to <code>$treesway</code>, shadows don't move, expect in {{gmod}}.}} | {{bug|In {{mapbase}}, using a shadow-casting [[env_projectedtexture|projected texture]] will cause shadows not reacting to <code>$treesway</code>, shadows don't move, expect in {{gmod}}.}} | ||
: {{todo|What about <code>$singlepassflashlight</code> and <code>$flashlightnolambert</code>?}} | : {{todo|What about <code>$singlepassflashlight</code> and <code>$flashlightnolambert</code>?}} | ||
{{modernImportant|While $TreeSway can be used to animate a {{ent|prop_static}}, lightmap shadows casted by swaying static props will remain static. '''If [[CSM]] is unavailable''', consider using a {{ent|prop_dynamic}} instead. This can be combined with an animation containing more realistic pre-baked wind physics than can be achieved with $treesway, as seen in {{csgomap|de_prime}}.}} | |||
==Parameters== | ==Parameters== | ||
Revision as of 11:34, 9 October 2023
Template:Shaderparam It is also available in 
. In , it can also be used for UnlitGeneric.
$treesway morphs a material around using the parameters of an env_wind entity to give the appearance of tree leaves and foilage blowing in the wind. The subparameters of $treesway determine how much the env_wind entity should affect the morphing, and all of them (except $treeswaystatic) must be specified in order for the effect to work properly. This shader parameter assumes any model using it is facing upwards.
Warning:Due to the way bumped lighting is calculated, $treesway will not sway materials which use $bumpmap.
Note:This shader parameter is disabled by default in the 
SDK. It can re-enabled by modding.
Bug:This shader parameter does not work with $detailtexturetransform. [todo tested in ?]Bug:In , using a shadow-casting projected texture on materials with this parameter will cause flickering. As a workaround, try to keep trees away from where player flashlights can reach. $halflambert may also partially fix the issue. [todo tested in ?]Bug:In , using a shadow-casting projected texture will cause shadows not reacting to $treesway, shadows don't move, expect in . [todo tested in ?]- Todo: What about
$singlepassflashlightand$flashlightnolambert?
Important:While $TreeSway can be used to animate a prop_static, lightmap shadows casted by swaying static props will remain static. If CSM is unavailable, consider using a prop_dynamic instead. This can be combined with an animation containing more realistic pre-baked wind physics than can be achieved with $treesway, as seen in 
de_prime.Parameters
$treesway
$treeswayheight
$treeswaystartheight
$treeswayradius
$treeswaystartradius
$treeswayspeed
$treeswaystrength
$treeswayscrumblespeed
$treeswayscrumblestrength
$treeswayscrumblefrequency
$treeswayfalloffexp
$treeswayscrumblefalloffexp
$treeswayspeedhighwindmultipler
$treeswayspeedlerpstart
$treeswayspeedlerpend
$treeswaystatic
$treeswaystaticvalues
See Also
https://gamebanana.com/tuts/12924 - How to achieve a similar effect without $treeSway, on all source engine games. Alternatively, use an animated prop_dynamic, for a more realistic (but more expensive) effect.