Fog_v4 Op

Ops.Gl.TextureEffects.Fog_v4

Op author: pandur

Test Patches: 1 Test

add post processing fog (nebula) to a scene

A little advice for using post processing fog on iOS:

Due to WebGL1 being used on iOS, the depth buffer that is needed for fog calculation is not as precise as the depth buffer being used in Chrome or Firefox. Therefor it is advised to use small scenes and adjust the scene camera's near & far value (with the Perspective op as shown in the example) to only capture the scene and not exceeding the far value too much behind it.

Also, setting the near value to something greater than 0.01 (somewhere between 0.1 - 1 depending on context) can greatly increase depth buffer resolution.

Inputs

render (Trigger)

trigger input

Blending

blendMode index (integer /Number)

Amount (Number)

intensity of the effect

Textures

Depth Texture (Object)

input of the depth texture

Gradient Texture (Object)

input for a gradient texture that lets you color the fog with a gradient

Background Texture (Object)

Fog Options

Fog Start (Number)

start of the fog

Fog End (Number)

end of the fog

Fog Density (Number)

density of the fog

Frustum

nearplane (Number)

near plane to be used for the fog frustum

farplane (Number)

far plane to be used for the fog frustum

Fog Color

Fog R (Number)

r channel of fog color

Fog G (Number)

g channel of fog color

Fog B (Number)

b channel of fog color

Fog A (Number)

alpha channel of fog color

Outputs

trigger (Trigger)

output trigger

Caught a mistake or want to contribute to the documentation?

Edit Documentation

fog example

Open Example In Editor

Patches using Fog_v4

Examples
Public

Changelog

	created op 2020-11-04 - simod
	Ops.User.simod.Fog_v3 renamed to Ops.Gl.TextureEffects.Fog_v3 2020-11-04 - simod
	cloned op from Ops.Gl.TextureEffects.Fog_v3 2022-06-07 - pandur
	Ops.User.pandur.Fog_v4 renamed to Ops.Gl.TextureEffects.Fog_v4 2022-06-07 - pandur