Method
This node applies a tone mapping process to an image. This is often used to convert high dynamic range images to a colour space suitable for output; to convert linear space images to gamma 2.2 for output; or to balance brightness levels across an image and adapt them over time, to mimic the behavior of camera lenses and eyes. A number of standard tone mapping operators are supported.
Raw texture |
Processed texture |
|
|
Example Nodegraph |
|
Attributes
Name |
Description |
Tone Map Mode |
The method used for tone mapping.
- Direct (Pass Throguh Linear), Leave the images unchanged.
- Linear To Gamma, Convert from linear colour space to gamma 2.2.
- Reinhard, Perform tonemapping with the Reinhard operator.
- Filmic, Perform tonemapping with the Filmic operator.
- Max White, Tone map the image by scaling down brightness by the brightest pixel value.
- Linear-Camera, Perform tone mapping from linear space using a camera exposure model using the parameter controls.
- AutoLinear-Camera, Perform tone mapping from linear space using a camera exposure model which automatically determines the parameters based on the input image and exposure setting.
- Preserve Contrast, Perform tone mapping using an operator that attempts to preserve contrast in the image.
|
Adaption Rate |
The rate of adaption when moving from bright to dark areas and vice versa, used to mimic real eye and camera behaviours. When moving from a dark to a light area eyes take time to adapt, so at first the light area appears excessively bright. |
Exposure |
The exposure, for camera-based operators. |
ISO (Sensitivity) |
The ISO, for camera-based operators. |
F/stop |
The F/stop, for camera-based operators. |
Gamma |
The desired gamma of the target output image – usually 2.2. |
Inputs
Name |
Description |
Typical Node Input |
Active |
Turn the effect on or off. Values < 0.1 will turn the effect off, and deferred rendering must be on. |
Envelope Modifier |
Outputs
There are no outputs from this node.
Notes
!The processed texture above has been slightly altered from default to show the kind of effect you can get with this node. By default, no change will be made to the node until you change some of the nodes attributes.