Color Management

Open

RenderMan features robust support for the industry-standard ACES color management system, and other color spaces, such as the popular Filmic Blender, in all bridge products, including the interactive RenderMan Image Tool.

OCIO Configurations

RenderMan ships with a number of OCIO configurations :

LINEAR-sRGB
The original Sony Pictures Imageworks configuration has been used since the dawn of time.

Open

ACES-1.2
The visual effects standard Academy Colour Encoding System for filmmaking and computer graphics.

Open

FILMIC BLENDER
A popular BT.709-based configuration provides a high dynamic range and other effects typical in film stock. Developed by Troy Sobotka.

Open

Configuration selection

• $OCIO: Use the color space defined by your systems environment variable. Typically sRGB.

• Off:  Scene Linear is defined as the scene-wide color space.

• ACES1.2: Use the ACES 1.2 color encoding system that ships with RenderMan 24.

• Filmic Blender: Use the popular BT.709 color space.

• Custom: Allows for a custom color space file to be specified.
  
  
  

Color managed items

• UI color values

  • All DCC apps provide a color-managed color picker that will return a color in the rendering colorspace. RenderMan simply uses them as-is.

• Lights

  • Color Temperature was computed in Rec.709 before 24.0 and is now color-managed.

  • PxrEnvDayLight is also color-managed and relies on the srgb_linear role.

• Textures

  • Textures MUST be converted to the rendering color space before usage. This task can be accomplished by the Texture Manager.

  • It is also possible to use the PxrColorSpace pattern to convert a texture color, but at a performance cost.

• Patterns

  • PxrBlackBody is color-managed.

  • PxrHairColor is color-managed.

  • PxrColorSpace allows artists to convert from one color space to the rendering space.