forked from bartvdbraak/blender
958d0d4236
Modes: Linear interpolation (default), stepped linear, smoothstep and smootherstep. This also includes an additional option for the **Clamp node** to switch between **Min Max** (default) and **Range** mode. This was needed to allow clamping when **To Max** is less than **To Min**. Reviewed By: JacquesLucke, brecht Differential Revision: https://developer.blender.org/D5827
47 lines
1.6 KiB
C
47 lines
1.6 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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/* Clamp Node */
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ccl_device void svm_node_clamp(KernelGlobals *kg,
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ShaderData *sd,
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float *stack,
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uint value_stack_offset,
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uint parameters_stack_offsets,
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uint result_stack_offset,
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int *offset)
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{
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uint min_stack_offset, max_stack_offset, type;
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svm_unpack_node_uchar3(parameters_stack_offsets, &min_stack_offset, &max_stack_offset, &type);
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uint4 defaults = read_node(kg, offset);
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float value = stack_load_float(stack, value_stack_offset);
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float min = stack_load_float_default(stack, min_stack_offset, defaults.x);
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float max = stack_load_float_default(stack, max_stack_offset, defaults.y);
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if (type == NODE_CLAMP_RANGE && (min > max)) {
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stack_store_float(stack, result_stack_offset, clamp(value, max, min));
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}
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else {
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stack_store_float(stack, result_stack_offset, clamp(value, min, max));
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}
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}
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CCL_NAMESPACE_END
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