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<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<!DOCTYPE funcs
SYSTEM '../../../clonk.dtd'>
<?xml-stylesheet type="text/xsl" href="../../../clonk.xsl"?>
<funcs>
<func>
<title>AddFragmentShader</title>
<category>Global</category>
<version>8.0 OC</version>
<syntax>
<rtype>int</rtype>
<params>
<param>
<type>string</type>
<name>category</name>
<desc>
Shader category or shader name the slices are added to. Known categories:
<table>
<rowh>
<col>Category</col>
<col>Description</col>
</rowh>
<row>
<col>Common</col>
<col>Applies to everything.</col>
</row>
<row>
<col>Object</col>
<col>Applies to all objects and sprites.</col>
</row>
<row>
<col>Landscape</col>
<col>Applies to the landscape.</col>
</row>
</table>
</desc>
</param>
<param>
<type>string</type>
<name>shader</name>
<desc>The GLSL shader code.</desc>
</param>
</params>
</syntax>
<desc>Adds shader slices to a category of shaders or to a single shader. Returns an identifier for removal.</desc>
<remark>
Consider using built-in functions such as <funclink>SetGamma</funclink>, <funclink>SetMatAdjust</funclink>, or <funclink>SetClrModulation</funclink> for changing colors instead of writing a custom shader.
</remark>
<examples>
<example>
<code>AddFragmentShader("Landscape", "slice(color+1) { fragColor.r = 1.f; }");</code>
<text>Makes the landscape very red.</text>
</example>
</examples>
<related>
<funclink>RemoveShader</funclink>
</related>
</func>
<author>Luchs</author><date>2016-10</date>
</funcs>
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