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List Of String Constants

OSL defines strings as inputs and outputs of various functions:

• Noise types supported by the noise() function: "uperlin", "perlin", "noise", "snoise", "cell", "circular", "chips", "voronoi", "scircular", "schips", "svoronoi"
• Ray types supported by raytype(): "camera", "shadow", "diffuse", "glossy", "reflection", "specular", "refraction", "AO"
• Keys supported by getattribute(): "camera:resolution", "camera:pixelaspect", "camera:projection", "camera:fovThe area that is visible to a camera lens usually measured in millimeters. A wide angle lens provides a larger field of view and a telephoto lens provides a narrow field of view.", "camera:clip_near", "camera:clip_far", "camera:clip", "camera:distortion", "hit:obj-seed", "hit:w", "hit:local-shader-dir", "pixel:pos"
• Keys supported by gettetureinfo(): "exists", "resolution", "channels"
• Values supported for the wrap option for texture() calls: "black", "white", "clamp", "mirror", "periodic"
• Values returned by getattribute("camera:projection"): "spherical", "cylindrical", "cube", "cube:+x", "cube:-x", "cube:+y", "cube:-y", "cube:+z", "cube:-z", "perspective", "orthographic", "baking"

For more string constants and learning more about programming with the Open Shader LanguageA shading language developed by Sony Pictures Imageworks. There are multiple render engines that utilize OSL as it is particularly suited for physically-based renderers. refer to The Octane OSL Guide.

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