36 lines
1006 B
C
36 lines
1006 B
C
/* SPDX-FileCopyrightText: 2009-2010 Sony Pictures Imageworks Inc., et al. All Rights Reserved.
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* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Adapted code from Open Shading Language. */
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#pragma once
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#include "kernel/globals.h"
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#include "kernel/svm/math_util.h"
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#include "kernel/svm/node_types.h"
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#include "kernel/svm/util.h"
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#include "kernel/util/colorspace.h"
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CCL_NAMESPACE_BEGIN
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/* Blackbody Node */
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ccl_device_noinline void svm_node_blackbody(KernelGlobals kg,
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ccl_private float *ccl_restrict stack,
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const ccl_global SVMNodeBlackbody &ccl_restrict node)
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{
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/* Input */
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const float temperature = stack_load(stack, node.temperature);
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float3 color_rgb = rec709_to_rgb(kg, svm_math_blackbody_color_rec709(temperature));
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color_rgb = max(color_rgb, zero_float3());
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stack_store_float3(stack, node.color_offset, color_rgb);
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}
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CCL_NAMESPACE_END
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