Steve Pham
b4a2edec6a
* Final update copyright headers to reference license files at the repo root Signed-off-by: spham <spham@amazon.com> * Fix copyright validator unit tests to support the stale O3DE header scenario Signed-off-by: spham <spham@amazon.com>
24 lines
832 B
Plaintext
24 lines
832 B
Plaintext
/*
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* 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.
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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#define PROVISIONAL_TONEMAP_GAMMA 2.4
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float4 ApplyProvisionalTonemap(float4 color)
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{
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// Provisional tone mapping will be applied using Reinhard, then applying gamma to handle the color in perceptual color space.
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float3 toneMappedColor = color.xyz / (1.0 + color.xyz);
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return float4(pow(toneMappedColor, 1.0 / PROVISIONAL_TONEMAP_GAMMA), color.w);
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}
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float4 ApplyInverseProvisionalTonemap(float4 color)
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{
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// This is inverse function of provisional tone mapping.
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float3 linearValue = pow(color.xyz, PROVISIONAL_TONEMAP_GAMMA);
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return float4(linearValue / (1.0 - linearValue), color.w);
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}
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