egamut2_ocio2_demo

example-gamut2-config_v1.ocio.yaml

ocio_profile_version: 2.2

name: example-egamut2-config_v1.0

description: |
  Demonstrates the use of EGamut2 D65 as the scene reference space and the rest of the display color space / view transform architecture


search_path:
  - ./luts

family_separator: /

roles:
  aces_interchange:        ap0ln
  cie_xyz_d65_interchange: xyzd65
  color_timing:            eg2lg
  compositing_log:         eg2lg
  compositing_linear:      eg2ln
  data:                    nc
  default:                 eg2ln
  scene_linear:            eg2ln
  srgb_linear:             rec709ln
  texture_paint:           eg2ln
  matte_paint:             eg2ln

file_rules:
  - !<Rule> {name: ColorSpaceNamePathSearch}
  - !<Rule> {name: Default, colorspace: default}


shared_views:
  - !<View> {name: Bypass, colorspace: nc}
  - !<View> {name: Display, view_transform: colorimetry, display_colorspace: <USE_DISPLAY_NAME>}
  - !<View> {name: K1S1, view_transform: arri_k1s1_rec709_shader, display_colorspace: <USE_DISPLAY_NAME>}
  - !<View> {name: TCam3, view_transform: fl_tcam3_sdr_video, display_colorspace: <USE_DISPLAY_NAME>}


displays:
  Rec.709 video:
    - !<Views> [TCam3, K1S1, Display, Bypass]

  sRGB (~2.22):
    - !<Views> [TCam3, K1S1, Display, Bypass]

  sRGB Display:
    - !<Views> [TCam3, K1S1, Display, Bypass]

  
  Rec.2100-PQ:
    # This display needs a custom TCam3 view, because the shared TCam3 view isn't suitable for a PQ display
    - !<View> {name: TCam3, view_transform: fl_tcam3_hdr_1k, display_colorspace: rec2100pq}
    # The shared view *would* be suitable for an SDR-preview-in-HDR-display, but the "TCam3" view name is now taken for the display
    # So we create a new view, reference an SDR (hopefully rec.709 limited) view transform intended for gamma 2.4 / rec709, but output in Rec.2020 / PQ
    - !<View> {name: TCam3 (SDR preview), view_transform: fl_tcam3_sdr_video, display_colorspace: rec2100pq}
    - !<Views> [Display, Bypass]


# We can hide and re-order displays and views with the active lists
active_views: [TCam3, Display, Bypass]
active_displays: [sRGB Display, Rec.709 video]

# And we're only adding the ACES2065-1 colorspace to satisfy the OCIO-2.2 profile requirements
# for an aces_interchange space. But this profile is compatible with OCIO-2.1, if you'd like to experiment.
inactive_colorspaces: [ACES2065-1]


# The default view transform is the bridge between scene RGB and display XYZ reference spaces.
# It's used for colorimetric "Display" / "Un-tone-mapped" views, and for standard colorspace
# conversions between the display colorspaces and the regular color spaces

default_view_transform: colorimetry

view_transforms:
  # View Transforms are DRTs, expecting your scene reference as an input, and your display reference as an output
  - !<ViewTransform>
    name: colorimetry
    to_scene_reference: !<MatrixTransform> {name: D65-adapted CIE XYZ to EGamut2, matrix: [1.35702367254585, -0.237033581941448, -0.119990090604401, 0, -0.438325988676953, 1.29442894440374, 0.143897044273212, 0, 0.100252080766426, 0.0641140083985013, 0.835633910835072, 0, 0, 0, 0, 1]}


  # Just showing off here
  - !<ViewTransform>
    name: arri_k1s1_rec709_shader
    from_scene_reference: !<GroupTransform>
      children:
        - !<ColorSpaceTransform> {src: Linear EGamut2, dst: ACES2065-1}
        - !<BuiltinTransform> {style: ARRI_ALEXA-LOGC-EI800-AWG_to_ACES2065-1, direction: inverse}
        - !<GradingRGBCurveTransform>
          style: log
          master: {control_points: [0, 0, 0.06896552, 0.02795742, 0.137931, 0.0655087, 0.2068966, 0.1188965, 0.2758621, 0.1955241, 0.3448276, 0.3109463, 0.4137931, 0.4441377, 0.4827586, 0.5752721, 0.5517241, 0.7034314, 0.6206896, 0.8261872, 0.6896552, 0.9104496, 0.7586207, 0.9591234, 0.8275862, 0.983741, 0.8965517, 0.9934393, 0.9655172, 0.9973552, 1.034483, 1.003448, 1.103448, 1.010345, 1.172414, 1.017241, 1.241379, 1.024138, 1.310345, 1.031034, 1.37931, 1.037931, 1.448276, 1.044828, 1.517241, 1.051724, 1.586207, 1.058621, 1.655172, 1.065517, 1.724138, 1.072414, 1.793103, 1.07931, 1.862069, 1.086207, 1.931034, 1.093103, 2, 1.1]}
        - !<ExponentWithLinearTransform> {gamma: 2.725, offset: 0.097}
        - !<MatrixTransform> {matrix: [1.485007, -0.401216, -0.083791, 0, -0.033732, 1.282887, -0.249155, 0, 0.010776, -0.122018, 1.111242, 0, 0, 0, 0, 1]}
        - !<RangeTransform> {min_in_value: 0, min_out_value: 0}
        - !<ExponentWithLinearTransform> {gamma: 2.725, offset: 0.097, direction: inverse}
        - !<BuiltinTransform> {style: DISPLAY - CIE-XYZ-D65_to_REC.1886-REC.709, direction: inverse}

  # If you know the exact encoding of an output-referred LUT, you can ues a builtintransform to 
  # invert out the display encoding;
  - !<ViewTransform>
    name: fl_tcam3_sdr_video
    from_scene_reference: !<GroupTransform>
      children:
        - !<ColorSpaceTransform> {src: Linear EGamut2, dst: TLog EGamut2}
        - !<FileTransform> {src: FilmLight_TLog_EGamut2_2_Video_Full.cub}
        - !<BuiltinTransform> {style: DISPLAY - CIE-XYZ-D65_to_REC.1886-REC.709, direction: inverse}

  # ...or you could simply ColorSpaceTransform your way out to XYZ D65.
  - !<ViewTransform>
    name: fl_tcam3_hdr_1k
    from_scene_reference: !<GroupTransform>
      children:
        - !<ColorSpaceTransform> {src: Linear EGamut2, dst: TLog EGamut2}
        - !<FileTransform> {src: FilmLight_TLog_EGamut2_2_Rec2084_Rec2020_10000nits.cub}
        - !<ColorSpaceTransform> {src: Rec.2100-PQ, dst: XYZ D65}


display_colorspaces:
  - !<ColorSpace>
    name: XYZ D65
    aliases: [xyzd65]
    encoding: display-linear

  - !<ColorSpace>
    name: Rec.1886 Rec.709
    aliases: [Rec.709 video, rec709g24]
    encoding: sdr-video
    from_display_reference: !<BuiltinTransform> {style: DISPLAY - CIE-XYZ-D65_to_REC.1886-REC.709}

  - !<ColorSpace>
    name: sRGB (~2.22)
    aliases: [rec709srgb]
    encoding: sdr-video
    from_display_reference: !<BuiltinTransform> {style: DISPLAY - CIE-XYZ-D65_to_sRGB}

  - !<ColorSpace>
    name: Gamma 2.2 Rec.709
    aliases: [sRGB Display]
    encoding: sdr-video
    from_display_reference: !<BuiltinTransform> {style: DISPLAY - CIE-XYZ-D65_to_G2.2-Rec.709}

  - !<ColorSpace>
    name: Rec.2100-PQ
    aliases: [rec2100pq]
    encoding: hdr-video
    from_display_reference: !<BuiltinTransform> {style: DISPLAY - CIE-XYZ-D65_to_REC.2100-PQ}

  
colorspaces:
  - !<ColorSpace>
    name: Linear EGamut2
    aliases: [eg2ln]
    encoding: scene-linear 

  - !<ColorSpace>
    name: ACES2065-1
    aliases: [ap0ln]
    encoding: scene-linear 
    to_scene_reference: !<MatrixTransform> {name: AP0 to EGamut2, matrix: [1.25992000102997, -0.180662006139756, -0.0792595967650415, 0, 0.00486135017126798, 0.944082021713261, 0.0510565005242827, 0, 0.121235996484756, 0.0466471016407016, 0.832117021083833, 0, 0, 0, 0, 1]}

  - !<ColorSpace>
    name: Linear Rec.709
    aliases: [rec709ln]
    encoding: scene-linear 
    to_scene_reference: !<MatrixTransform> {name: Rec.709 to EGamut2, matrix: [0.536292888652421, 0.326736387063327, 0.136969122409424, 0, 0.0877891264176234, 0.775510559265133, 0.136700186726053, 0, 0.0720834599557859, 0.177196393820362, 0.750720265433145, 0, 0, 0, 0, 1]}

  - !<ColorSpace>
    name: TLog EGamut2
    aliases: [eg2lg]
    encoding: log 
    to_scene_reference: !<LogCameraTransform> {name: FilmLight T-Log Decoding, base: 2.71828182845905, log_side_slope: 0.0923290259657735, log_side_offset: 0.552012656860665, lin_side_offset: 0.00570482440424738, lin_side_break: 0, linear_slope: 16.1843764896659, direction: inverse}

  - !<ColorSpace>
    name: Non-color data
    aliases: [nc]
    description: Non-color data
    encoding: data
    isdata: true