Steve Pham
38261d0800
* Updated all copyright headers to split the longer original copyright line into 2 shorter lines Signed-off-by: Steve Pham <spham@amazon.com>
25 lines
834 B
Plaintext
25 lines
834 B
Plaintext
/*
|
|
* Copyright (c) Contributors to the Open 3D Engine Project.
|
|
* For complete copyright and license terms please see the LICENSE at the root of this distribution.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0 OR MIT
|
|
*
|
|
*/
|
|
|
|
#define PROVISIONAL_TONEMAP_GAMMA 2.4
|
|
|
|
float4 ApplyProvisionalTonemap(float4 color)
|
|
{
|
|
// Provisional tone mapping will be applied using Reinhard, then applying gamma to handle the color in perceptual color space.
|
|
float3 toneMappedColor = color.xyz / (1.0 + color.xyz);
|
|
return float4(pow(toneMappedColor, 1.0 / PROVISIONAL_TONEMAP_GAMMA), color.w);
|
|
}
|
|
|
|
float4 ApplyInverseProvisionalTonemap(float4 color)
|
|
{
|
|
// This is inverse function of provisional tone mapping.
|
|
float3 linearValue = pow(color.xyz, PROVISIONAL_TONEMAP_GAMMA);
|
|
return float4(linearValue / (1.0 - linearValue), color.w);
|
|
}
|
|
|