029b0df81a
Keep the existing Rec.709 fit and convert to other colorspace if needed, it seems accurate enough in practice, and keeps the same performance for the default case.
32 lines
905 B
C
32 lines
905 B
C
/* SPDX-License-Identifier: BSD-3-Clause
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*
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* Adapted from Open Shading Language
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* Copyright (c) 2009-2010 Sony Pictures Imageworks Inc., et al.
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* All Rights Reserved.
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*
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* Modifications Copyright 2011-2022 Blender Foundation. */
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#pragma once
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#include "kernel/svm/math_util.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 ShaderData *sd,
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ccl_private float *stack,
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uint temperature_offset,
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uint col_offset)
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{
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/* Input */
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float temperature = stack_load_float(stack, temperature_offset);
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float3 color_rgb = rec709_to_rgb(kg, svm_math_blackbody_color_rec709(temperature));
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stack_store_float3(stack, col_offset, color_rgb);
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}
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CCL_NAMESPACE_END
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