forked from bartvdbraak/blender
5ff132182d
This inconsistency drove me totally crazy, it's really confusing when it's inconsistent especially when you work on both Cycles and Blender sides. Shouldn;t cause merge PITA, it's whitespace changes only, Git should be able to merge it nicely.
40 lines
1.3 KiB
C
40 lines
1.3 KiB
C
/*
|
|
* 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
|
|
|
|
ccl_device void svm_node_brightness(ShaderData *sd, float *stack, uint in_color, uint out_color, uint node)
|
|
{
|
|
uint bright_offset, contrast_offset;
|
|
float3 color = stack_load_float3(stack, in_color);
|
|
|
|
decode_node_uchar4(node, &bright_offset, &contrast_offset, NULL, NULL);
|
|
float brightness = stack_load_float(stack, bright_offset);
|
|
float contrast = stack_load_float(stack, contrast_offset);
|
|
|
|
float a = 1.0f + contrast;
|
|
float b = brightness - contrast*0.5f;
|
|
|
|
color.x = max(a*color.x + b, 0.0f);
|
|
color.y = max(a*color.y + b, 0.0f);
|
|
color.z = max(a*color.z + b, 0.0f);
|
|
|
|
if(stack_valid(out_color))
|
|
stack_store_float3(stack, out_color, color);
|
|
}
|
|
|
|
CCL_NAMESPACE_END
|