diff options
Diffstat (limited to 'intern/cycles/kernel/shaders/node_ramp_util.h')
-rw-r--r-- | intern/cycles/kernel/shaders/node_ramp_util.h | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/intern/cycles/kernel/shaders/node_ramp_util.h b/intern/cycles/kernel/shaders/node_ramp_util.h deleted file mode 100644 index f7fb07b257d..00000000000 --- a/intern/cycles/kernel/shaders/node_ramp_util.h +++ /dev/null @@ -1,93 +0,0 @@ -/* - * 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. - */ - -/* NOTE: svm_ramp.h, svm_ramp_util.h and node_ramp_util.h must stay consistent */ - -color rgb_ramp_lookup(color ramp[], float at, int interpolate, int extrapolate) -{ - float f = at; - int table_size = arraylength(ramp); - - if ((f < 0.0 || f > 1.0) && extrapolate) { - color t0, dy; - if (f < 0.0) { - t0 = ramp[0]; - dy = t0 - ramp[1]; - f = -f; - } - else { - t0 = ramp[table_size - 1]; - dy = t0 - ramp[table_size - 2]; - f = f - 1.0; - } - return t0 + dy * f * (table_size - 1); - } - - f = clamp(at, 0.0, 1.0) * (table_size - 1); - - /* clamp int as well in case of NaN */ - int i = (int)f; - if (i < 0) - i = 0; - if (i >= table_size) - i = table_size - 1; - float t = f - (float)i; - - color result = ramp[i]; - - if (interpolate && t > 0.0) - result = (1.0 - t) * result + t * ramp[i + 1]; - - return result; -} - -float rgb_ramp_lookup(float ramp[], float at, int interpolate, int extrapolate) -{ - float f = at; - int table_size = arraylength(ramp); - - if ((f < 0.0 || f > 1.0) && extrapolate) { - float t0, dy; - if (f < 0.0) { - t0 = ramp[0]; - dy = t0 - ramp[1]; - f = -f; - } - else { - t0 = ramp[table_size - 1]; - dy = t0 - ramp[table_size - 2]; - f = f - 1.0; - } - return t0 + dy * f * (table_size - 1); - } - - f = clamp(at, 0.0, 1.0) * (table_size - 1); - - /* clamp int as well in case of NaN */ - int i = (int)f; - if (i < 0) - i = 0; - if (i >= table_size) - i = table_size - 1; - float t = f - (float)i; - - float result = ramp[i]; - - if (interpolate && t > 0.0) - result = (1.0 - t) * result + t * ramp[i + 1]; - - return result; -} |