A collection of Arnold shaders created by Marc-Antoine Desjardins at Oblique FX. The July 2014 update adds support for Arnold-4.2.0.6, makes the »Obq_Hair shader« (archive) public and adds »Obq_Color«, an accelerated untexturable color which should be used in place of »Color_Savestate« and similar nodes.

The collection contains these shaders: Obq_AngularCamera - A camera shader that allows you to create angular maps of 3D scenes Obq_Atmosphere - a shader made for planetary atmosphere, but can also be used as a simple ray marcher Obq_Bend4Stereo - a passthrough node that changes the ray direction for camera rays. Used with stereo cameras, this allows the shading of the two cameras to be calculated from a single one Obq_ChangeRange - an upgraded version of the Scalar Change Range. It lets you remap a scalar parameter expressed in an old min/max range to a new min/max range and adds a clamp, a bias and a gain Obq_Environment - an upgraded version of sta_environment. You can also plug it in the environment port of a material to use with Phong, Reflection shaders and more Obq_Etching Obq_Fresnel - a texture node that outputs the proportion of light reflected/refracted from a surface based on the refractive indices and the extinction coefficients Obq_Hair - a dual scattering hair shader implementation of Sadeghi et al. "An artist friendly hair shading system" using Ou et al. ISHair: Importance Sampling for Hair Scattering (archive) (also see alShaders below) Obq_IESLightFilter Obq_MeasuredMaterial Obq_Opacity Obq_RandomColor Obq_RGBComEmit Obq_RGBComLightFilter Obq_Root2Tip Obq_Shadow Obq_Simbiont - a Darktree 2.5 loader node in Softimage that reads .dsts files for the Arnold Renderer Obq_StereoLens - renders a pair of stereo frames from the center camera of a stereo rig into a single frame Obq_SurfaceEnvironment - an upgraded version of sta_environment that you can use directly without using an environment port. This is usually mixed in the beauty or used with the AOV passthrough Obq_Thickness - measures the thickness of a pixel/surface in a chosen direction. It is not affected by opacity cutouts Obq_TransformUV Obq_UVRemapLensDistortion Obq_VolumeThickness - a particle density shader ideal for rendering smoke or other volumes