diff options
Diffstat (limited to 'indra/newview/app_settings/shaders/class1/deferred/srgb.glsl')
| -rw-r--r-- | indra/newview/app_settings/shaders/class1/deferred/srgb.glsl | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/srgb.glsl b/indra/newview/app_settings/shaders/class1/deferred/srgb.glsl new file mode 100644 index 0000000000..587f3d5a94 --- /dev/null +++ b/indra/newview/app_settings/shaders/class1/deferred/srgb.glsl @@ -0,0 +1,46 @@ +/** + * @file srgb.glsl + * + * $LicenseInfo:firstyear=2007&license=viewerlgpl$ + * Second Life Viewer Source Code + * Copyright (C) 2007, Linden Research, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License only. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA + * $/LicenseInfo$ + */ + +vec3 srgb_to_linear(vec3 cs) +{ + vec3 low_range = cs / vec3(12.92); + vec3 high_range = pow((cs+vec3(0.055))/vec3(1.055), vec3(2.4)); + + bvec3 lte = lessThanEqual(cs,vec3(0.04045)); + return mix(high_range, low_range, lte); + +} + +vec3 linear_to_srgb(vec3 cl) +{ + cl = clamp(cl, vec3(0), vec3(1)); + vec3 low_range = cl * 12.92; + vec3 high_range = 1.055 * pow(cl, vec3(0.41666)) - 0.055; + + bvec3 lt = lessThan(cl,vec3(0.0031308)); + return mix(high_range, low_range, lt); + +} + |