0e7a696819
And add back the compiler flag that hid them. Pull Request: https://projects.blender.org/blender/blender/pulls/139497
37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
/* SPDX-FileCopyrightText: 2009-2010 Sony Pictures Imageworks Inc., et al. All Rights Reserved.
|
|
* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Adapted code from Open Shading Language. */
|
|
|
|
#pragma once
|
|
|
|
#include "kernel/svm/math_util.h"
|
|
#include "kernel/svm/util.h"
|
|
|
|
#include "kernel/util/colorspace.h"
|
|
|
|
CCL_NAMESPACE_BEGIN
|
|
|
|
/* Wavelength to RGB */
|
|
|
|
ccl_device_noinline void svm_node_wavelength(KernelGlobals kg,
|
|
ccl_private float *stack,
|
|
const uint wavelength,
|
|
const uint color_out)
|
|
{
|
|
const float lambda_nm = stack_load_float(stack, wavelength);
|
|
|
|
float3 color = svm_math_wavelength_color_xyz(lambda_nm);
|
|
color = xyz_to_rgb(kg, color);
|
|
color *= 1.0f / 2.52f; // Empirical scale from lg to make all comps <= 1
|
|
|
|
/* Clamp to zero if values are smaller */
|
|
color = max(color, make_float3(0.0f, 0.0f, 0.0f));
|
|
|
|
stack_store_float3(stack, color_out, color);
|
|
}
|
|
|
|
CCL_NAMESPACE_END
|