diff options
author | Dalai Felinto <dfelinto@gmail.com> | 2011-12-04 03:05:35 +0400 |
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committer | Dalai Felinto <dfelinto@gmail.com> | 2011-12-04 03:05:35 +0400 |
commit | d15c5e51a1f05ff9044bda32cb8c47b6dd59426c (patch) | |
tree | d9be3165c81c8e78c8927ff2dd3e2c004fdbed42 /intern/cycles/kernel/svm/svm_invert.h | |
parent | 7691e05e4099fec676c79f4ffb1f79d52e9e8a8d (diff) |
Invert Color Cycles Node
as with the HSV node the OSL code is relying on the (yet to be implemented) autorename.
Also the svm code could use mix (svm_lerp) instead:
32 . float3 color_inv = make_float3(1.0f, 1.0f, 1.0f) - color;
35 . . stack_store_float3(stack, out_color, svm_lerp(color_inv, color, factor));
I have a feeling that each node 'program' should have the least program as possible. I'll see with Brecht later.
But overall I don't know if that's any fast. And apart from that I think we will need this kind of function to move to a library if multiple functions linked in are not a problem.
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 + |