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73 lines
2.8 KiB
XML
73 lines
2.8 KiB
XML
<?xml version="1.0" encoding="UTF-8" ?>
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<class name="VisualShaderNodeColorFunc" inherits="VisualShaderNode" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
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<brief_description>
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A [Color] function to be used within the visual shader graph.
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</brief_description>
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<description>
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Accept a [Color] to the input port and transform it according to [member function].
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</description>
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<tutorials>
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</tutorials>
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<members>
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<member name="function" type="int" setter="set_function" getter="get_function" enum="VisualShaderNodeColorFunc.Function" default="0">
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A function to be applied to the input color. See [enum Function] for options.
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</member>
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</members>
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<constants>
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<constant name="FUNC_GRAYSCALE" value="0" enum="Function">
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Converts the color to grayscale using the following formula:
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[codeblock]
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vec3 c = input;
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float max1 = max(c.r, c.g);
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float max2 = max(max1, c.b);
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float max3 = max(max1, max2);
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return vec3(max3, max3, max3);
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[/codeblock]
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</constant>
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<constant name="FUNC_HSV2RGB" value="1" enum="Function">
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Converts HSV vector to RGB equivalent.
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</constant>
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<constant name="FUNC_RGB2HSV" value="2" enum="Function">
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Converts RGB vector to HSV equivalent.
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</constant>
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<constant name="FUNC_SEPIA" value="3" enum="Function">
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Applies sepia tone effect using the following formula:
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[codeblock]
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vec3 c = input;
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float r = (c.r * 0.393) + (c.g * 0.769) + (c.b * 0.189);
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float g = (c.r * 0.349) + (c.g * 0.686) + (c.b * 0.168);
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float b = (c.r * 0.272) + (c.g * 0.534) + (c.b * 0.131);
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return vec3(r, g, b);
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[/codeblock]
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</constant>
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<constant name="FUNC_LINEAR_TO_SRGB" value="4" enum="Function">
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Converts color from linear color space to sRGB color space using the following formula:
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[codeblock]
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vec3 c = clamp(c, vec3(0.0), vec3(1.0));
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const vec3 a = vec3(0.055f);
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return mix((vec3(1.0f) + a) * pow(c.rgb, vec3(1.0f / 2.4f)) - a, 12.92f * c.rgb, lessThan(c.rgb, vec3(0.0031308f)));
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[/codeblock]
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The Compatibility renderer uses a simpler formula:
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[codeblock]
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vec3 c = input;
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return max(vec3(1.055) * pow(c, vec3(0.416666667)) - vec3(0.055), vec3(0.0));
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[/codeblock]
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</constant>
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<constant name="FUNC_SRGB_TO_LINEAR" value="5" enum="Function">
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Converts color from sRGB color space to linear color space using the following formula:
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[codeblock]
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vec3 c = input;
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return mix(pow((c.rgb + vec3(0.055)) * (1.0 / (1.0 + 0.055)), vec3(2.4)), c.rgb * (1.0 / 12.92), lessThan(c.rgb, vec3(0.04045)));
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[/codeblock]
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The Compatibility renderer uses a simpler formula:
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[codeblock]
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vec3 c = input;
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return c * (c * (c * 0.305306011 + 0.682171111) + 0.012522878);
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[/codeblock]
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</constant>
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<constant name="FUNC_MAX" value="6" enum="Function">
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Represents the size of the [enum Function] enum.
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</constant>
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</constants>
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</class>
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