forked from bartvdbraak/blender
Brecht Van Lommel
c18712e868
This to avoids build conflicts with libc++ on FreeBSD, these __ prefixed values are reserved for compilers. I apologize to anyone who has patches or branches and has to go through the pain of merging this change, it may be easiest to do these same replacements in your code and then apply/merge the patch. Ref T37477.
98 lines
3.0 KiB
C
98 lines
3.0 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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#ifndef __SVM_RAMP_H__
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#define __SVM_RAMP_H__
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CCL_NAMESPACE_BEGIN
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ccl_device float4 rgb_ramp_lookup(KernelGlobals *kg, int offset, float f, bool interpolate)
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{
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f = clamp(f, 0.0f, 1.0f)*(RAMP_TABLE_SIZE-1);
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/* clamp int as well in case of NaN */
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int i = clamp(float_to_int(f), 0, RAMP_TABLE_SIZE-1);
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float t = f - (float)i;
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float4 a = fetch_node_float(kg, offset+i);
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if(interpolate && t > 0.0f)
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a = (1.0f - t)*a + t*fetch_node_float(kg, offset+i+1);
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return a;
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}
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ccl_device void svm_node_rgb_ramp(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node, int *offset)
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{
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uint fac_offset, color_offset, alpha_offset;
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uint interpolate = node.z;
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decode_node_uchar4(node.y, &fac_offset, &color_offset, &alpha_offset, NULL);
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float fac = stack_load_float(stack, fac_offset);
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float4 color = rgb_ramp_lookup(kg, *offset, fac, interpolate);
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if(stack_valid(color_offset))
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stack_store_float3(stack, color_offset, float4_to_float3(color));
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if(stack_valid(alpha_offset))
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stack_store_float(stack, alpha_offset, color.w);
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*offset += RAMP_TABLE_SIZE;
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}
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ccl_device void svm_node_rgb_curves(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node, int *offset)
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{
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uint fac_offset = node.y;
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uint color_offset = node.z;
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uint out_offset = node.w;
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float fac = stack_load_float(stack, fac_offset);
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float3 color = stack_load_float3(stack, color_offset);
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float r = rgb_ramp_lookup(kg, *offset, color.x, true).x;
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float g = rgb_ramp_lookup(kg, *offset, color.y, true).y;
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float b = rgb_ramp_lookup(kg, *offset, color.z, true).z;
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color = (1.0f - fac)*color + fac*make_float3(r, g, b);
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stack_store_float3(stack, out_offset, color);
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*offset += RAMP_TABLE_SIZE;
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}
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ccl_device void svm_node_vector_curves(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node, int *offset)
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{
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uint fac_offset = node.y;
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uint color_offset = node.z;
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uint out_offset = node.w;
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float fac = stack_load_float(stack, fac_offset);
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float3 color = stack_load_float3(stack, color_offset);
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float r = rgb_ramp_lookup(kg, *offset, (color.x + 1.0f)*0.5f, true).x;
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float g = rgb_ramp_lookup(kg, *offset, (color.y + 1.0f)*0.5f, true).y;
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float b = rgb_ramp_lookup(kg, *offset, (color.z + 1.0f)*0.5f, true).z;
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color = (1.0f - fac)*color + fac*make_float3(r*2.0f - 1.0f, g*2.0f - 1.0f, b*2.0f - 1.0f);
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stack_store_float3(stack, out_offset, color);
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*offset += RAMP_TABLE_SIZE;
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}
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CCL_NAMESPACE_END
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#endif /* __SVM_RAMP_H__ */
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