Ops ⟩ Gl ⟩ Pbr ⟩ PbrEnvironmentLight

PbrEnvironmentLight Op

PBR image based lighting setup

This operator is your image based lighting setup for all Ops.Gl.Pbr.PbrMaterial operators that will be located under it in your scene stack. For the highest quality, you will be using RGBE format equirectangular textures as the lighting scene input for this operator.

When using PBR Material with this operator, you can ignore connecting the output ports as they are silently communicated to your materials that are under the Environment operator. You can of course experiment with inputting custom textures for your PBR Material.

You can import your own .HDRI equirectangular images into the cables editor and it will automatically generate an RGBE format texture for you to use. You will find the texture file in your files library after your HDRI has been processed.

You can also find some RGBE environment examples in the file library.

additional reading: https://en.wikipedia.org/wiki/RGBE_image_format

and an HDRI library here: https://polyhaven.com/hdris

PBR Environment also supports Parallax Correction, which can improve the look and feel of your scene by correcting how you see your reflected environment on your PBR Materials on your objects. When using this feature it is advised to first make sure to turn on your Helper and Transform Gizmos in the editor canvas to easily see where your Scene bounds are. Adjust the center, minimum and maximum values to fit the PBR Environment bounding box to your desired coverage. To review how to hide and unhide Gizmos for transform and Op helpers, please refer to this page and search for transforms https://cables.gl/docs/0_howtouse/ui_walkthrough/ui_walkthrough

Full Name

Ops.Gl.Pbr.PbrEnvironmentLight

Visibility

Core Op - Official cables op

License

Author

amajesticseaflapflap

github

source

Credits

Uses BabylonJS Shader Code by Babylon.js
Uses Filament Code by google

Example Patch GLTF Helmet

gltf/pbr example helmet

https://github.com/KhronosGroup/glTF-Sample-Models/tree/master/2.0/DamagedHelmet

Open In Editor

Youtube Video Tutorial

INPUT PORTS

render (Trigger)

Intensity (Number)

RGBE Environment map (Object:texture)

RGBE format input, or RGB texture

Size Irradiance map index (Number: integer)

large is more information

Size pre-filtered environment index (Number: integer)

large is more information

Size IBL LUT index (Number: integer)

large is more information

Force 8bit IBL (Number: boolean)

Environment map does not contain RGBE data (Number: boolean)

toggle ON if not using an RGB texture

Rotation (Number)

rotate the environment around the up axis in degrees

Parallax Correction

Use parallax correction (Number: boolean)

manually adjust your reflection area for your scene

center X (Number)

center of your scene on X axis

center Y (Number)

center of your scene on Y axis

center Z (Number)

center of your scene on Z axis

Box min X (Number)

minimum bounds on X axis

Box min Y (Number)

minimum bounds on Y axis

Box min Z (Number)

minimum bounds on Z axis

Box max X (Number)

maximum bounds on X axis

Box max Y (Number)

maximum bounds on Y axis

Box max Z (Number)

maximum bounds on Z axis

OUTPUT PORTS

next (Trigger)

IBL LUT (Object)

for PBR Material (not required)

cubemap (diffuse irradiance) (Object)

for PBR Material (not required)

cubemap (pre-filtered environment map) (Object)

for PBR Material (not required)

Number of Pre-filtered mip levels (Number)

for PBR Material (not required)

Patches using PbrEnvironmentLight

Examples
Team
Public
My Patches
My Ops

Changelog

	created op	amajesticseaflapflap - 2022-01-19 14:38
	Ops.Dev.PbrPrecomputeIbl renamed to Ops.Dev.PbrEnvironmentLight	pandur - 2022-01-28 08:34
	Ops.Dev.PbrEnvironmentLight renamed to Ops.Gl.Pbr.PbrEnvironmentLight	pandur - 2022-02-07 11:13
bugfix	added workaround for amd cards where cubemaps were rendered wrong, because of clearColor	pandur - 2022-12-14 17:21