diff options
Diffstat (limited to 'intern/cycles/kernel/svm/svm_invert.h')
| -rw-r--r-- | intern/cycles/kernel/svm/svm_invert.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/intern/cycles/kernel/svm/svm_invert.h b/intern/cycles/kernel/svm/svm_invert.h new file mode 100644 index 00000000000..a14d8ec82fa --- /dev/null +++ b/intern/cycles/kernel/svm/svm_invert.h @@ -0,0 +1,40 @@ +/* + * Copyright 2011, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +CCL_NAMESPACE_BEGIN + +__device float invert(float color, float factor) +{ + return factor*(1.0f - color) + (1.0f - factor) * color; +} + +__device void svm_node_invert(ShaderData *sd, float *stack, uint in_fac, uint in_color, uint out_color) +{ + float factor = stack_load_float(stack, in_fac); + float3 color = stack_load_float3(stack, in_color); + + color.x = invert(color.x, factor); + color.y = invert(color.y, factor); + color.z = invert(color.z, factor); + + if (stack_valid(out_color)) + stack_store_float3(stack, out_color, color); +} + +CCL_NAMESPACE_END + |