2 * Copyright 2011, Blender Foundation.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
21 __device void svm_node_gamma(ShaderData *sd, float *stack, uint in_gamma, uint in_color, uint out_color)
23 float3 color = stack_load_float3(stack, in_color);
24 float gamma = stack_load_float(stack, in_gamma);
27 color.x = powf(color.x, gamma);
29 color.y = powf(color.y, gamma);
31 color.z = powf(color.z, gamma);
33 if (stack_valid(out_color))
34 stack_store_float3(stack, out_color, color);