Differential D5476 Diff 17084 intern/cycles/kernel/svm/svm_clamp.h

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				/*
				* Copyright 2011-2013 Blender Foundation
				*
				* Licensed under the Apache License, Version 2.0 (the "License");
				* you may not use this file except in compliance with the License.
				* You may obtain a copy of the License at
				*
				* http://www.apache.org/licenses/LICENSE-2.0
				*
				* Unless required by applicable law or agreed to in writing, software
				* distributed under the License is distributed on an "AS IS" BASIS,
				* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
				* See the License for the specific language governing permissions and
				* limitations under the License.
				*/

				CCL_NAMESPACE_BEGIN

				/* Clamp Node */

				ccl_device void svm_node_clamp(KernelGlobals *kg,
				ShaderData *sd,
				float *stack,
				uint value_stack_offset,
				uint parameters_stack_offsets,
				uint result_stack_offset,
				int *offset)
				{
				uint min_stack_offset, max_stack_offset;
				decode_node_uchar4(parameters_stack_offsets, &min_stack_offset, &max_stack_offset, NULL, NULL);

				uint4 defaults = read_node(kg, offset);

				float value = stack_load_float(stack, value_stack_offset);
				float min = stack_load_float_default(stack, min_stack_offset, defaults.x);
				float max = stack_load_float_default(stack, max_stack_offset, defaults.y);

				stack_store_float(stack, result_stack_offset, clamp(value, min, max));
				}

				CCL_NAMESPACE_END