forked from bartvdbraak/blender
36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
/*
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* Copyright 2011-2013 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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CCL_NAMESPACE_BEGIN
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ccl_device void svm_node_gamma(ShaderData *sd, float *stack, uint in_gamma, uint in_color, uint out_color)
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{
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float3 color = stack_load_float3(stack, in_color);
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float gamma = stack_load_float(stack, in_gamma);
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if (color.x > 0.0f)
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color.x = powf(color.x, gamma);
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if (color.y > 0.0f)
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color.y = powf(color.y, gamma);
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if (color.z > 0.0f)
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color.z = powf(color.z, gamma);
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if (stack_valid(out_color))
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stack_store_float3(stack, out_color, color);
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}
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CCL_NAMESPACE_END
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