diff options
Diffstat (limited to 'intern/cycles/kernel/osl/nodes/node_mix.osl')
-rw-r--r-- | intern/cycles/kernel/osl/nodes/node_mix.osl | 388 |
1 files changed, 388 insertions, 0 deletions
diff --git a/intern/cycles/kernel/osl/nodes/node_mix.osl b/intern/cycles/kernel/osl/nodes/node_mix.osl new file mode 100644 index 00000000000..582aa7b3c60 --- /dev/null +++ b/intern/cycles/kernel/osl/nodes/node_mix.osl @@ -0,0 +1,388 @@ +/* + * 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. + */ + +#include "stdosl.h" + +color rgb_to_hsv(color rgb) +{ + float cmax, cmin, h, s, v, cdelta; + color c; + + cmax = max(rgb[0], max(rgb[1], rgb[2])); + cmin = min(rgb[0], min(rgb[1], rgb[2])); + cdelta = cmax - cmin; + + v = cmax; + + if(cmax != 0.0) { + s = cdelta/cmax; + } + else { + s = 0.0; + h = 0.0; + } + + if(s == 0.0) { + h = 0.0; + } + else { + c = (color(cmax, cmax, cmax) - rgb)/cdelta; + + if(rgb[0] == cmax) h = c[2] - c[1]; + else if(rgb[1] == cmax) h = 2.0 + c[0] - c[2]; + else h = 4.0 + c[1] - c[0]; + + h /= 6.0; + + if(h < 0.0) + h += 1.0; + } + + return color(h, s, v); +} + +color hsv_to_rgb(color hsv) +{ + float i, f, p, q, t, h, s, v; + color rgb; + + h = hsv[0]; + s = hsv[1]; + v = hsv[2]; + + if(s==0.0) { + rgb = color(v, v, v); + } + else { + if(h==1.0) + h = 0.0; + + h *= 6.0; + i = floor(h); + f = h - i; + rgb = color(f, f, f); + p = v*(1.0-s); + q = v*(1.0-(s*f)); + t = v*(1.0-(s*(1.0-f))); + + if(i == 0.0) rgb = color(v, t, p); + else if(i == 1.0) rgb = color(q, v, p); + else if(i == 2.0) rgb = color(p, v, t); + else if(i == 3.0) rgb = color(p, q, v); + else if(i == 4.0) rgb = color(t, p, v); + else rgb = color(v, p, q); + } + + return rgb; +} + +color node_mix_blend(float t, color col1, color col2) +{ + return mix(col1, col2, t); +} + +color node_mix_add(float t, color col1, color col2) +{ + return mix(col1, col1 + col2, t); +} + +color node_mix_mul(float t, color col1, color col2) +{ + return mix(col1, col1 * col2, t); +} + +color node_mix_screen(float t, color col1, color col2) +{ + float tm = 1.0 - t; + + return color(1.0) - (color(tm) + t*(color(1.0) - col2))*(color(1.0) - col1); +} + +color node_mix_overlay(float t, color col1, color col2) +{ + float tm = 1.0 - t; + + color outcol = col1; + + if(outcol[0] < 0.5) + outcol[0] *= tm + 2.0*t*col2[0]; + else + outcol[0] = 1.0 - (tm + 2.0*t*(1.0 - col2[0]))*(1.0 - outcol[0]); + + if(outcol[1] < 0.5) + outcol[1] *= tm + 2.0*t*col2[1]; + else + outcol[1] = 1.0 - (tm + 2.0*t*(1.0 - col2[1]))*(1.0 - outcol[1]); + + if(outcol[2] < 0.5) + outcol[2] *= tm + 2.0*t*col2[2]; + else + outcol[2] = 1.0 - (tm + 2.0*t*(1.0 - col2[2]))*(1.0 - outcol[2]); + + return outcol; +} + +color node_mix_sub(float t, color col1, color col2) +{ + return mix(col1, col1 - col2, t); +} + +color node_mix_div(float t, color col1, color col2) +{ + float tm = 1.0 - t; + + color outcol = col1; + + if(col2[0] != 0.0) outcol[0] = tm*outcol[0] + t*outcol[0]/col2[0]; + if(col2[1] != 0.0) outcol[1] = tm*outcol[1] + t*outcol[1]/col2[1]; + if(col2[2] != 0.0) outcol[2] = tm*outcol[2] + t*outcol[2]/col2[2]; + + return outcol; +} + +color node_mix_diff(float t, color col1, color col2) +{ + return mix(col1, abs(col1 - col2), t); +} + +color node_mix_dark(float t, color col1, color col2) +{ + return min(col1, col2*t); +} + +color node_mix_light(float t, color col1, color col2) +{ + return max(col1, col2*t); +} + +color node_mix_dodge(float t, color col1, color col2) +{ + color outcol = col1; + + if(outcol[0] != 0.0) { + float tmp = 1.0 - t*col2[0]; + if(tmp <= 0.0) + outcol[0] = 1.0; + else if((tmp = outcol[0]/tmp) > 1.0) + outcol[0] = 1.0; + else + outcol[0] = tmp; + } + if(outcol[1] != 0.0) { + float tmp = 1.0 - t*col2[1]; + if(tmp <= 0.0) + outcol[1] = 1.0; + else if((tmp = outcol[1]/tmp) > 1.0) + outcol[1] = 1.0; + else + outcol[1] = tmp; + } + if(outcol[2] != 0.0) { + float tmp = 1.0 - t*col2[2]; + if(tmp <= 0.0) + outcol[2] = 1.0; + else if((tmp = outcol[2]/tmp) > 1.0) + outcol[2] = 1.0; + else + outcol[2] = tmp; + } + + return outcol; +} + +color node_mix_burn(float t, color col1, color col2) +{ + float tmp, tm = 1.0 - t; + + color outcol = col1; + + tmp = tm + t*col2[0]; + if(tmp <= 0.0) + outcol[0] = 0.0; + else if((tmp = (1.0 - (1.0 - outcol[0])/tmp)) < 0.0) + outcol[0] = 0.0; + else if(tmp > 1.0) + outcol[0] = 1.0; + else + outcol[0] = tmp; + + tmp = tm + t*col2[1]; + if(tmp <= 0.0) + outcol[1] = 0.0; + else if((tmp = (1.0 - (1.0 - outcol[1])/tmp)) < 0.0) + outcol[1] = 0.0; + else if(tmp > 1.0) + outcol[1] = 1.0; + else + outcol[1] = tmp; + + tmp = tm + t*col2[2]; + if(tmp <= 0.0) + outcol[2] = 0.0; + else if((tmp = (1.0 - (1.0 - outcol[2])/tmp)) < 0.0) + outcol[2] = 0.0; + else if(tmp > 1.0) + outcol[2] = 1.0; + else + outcol[2] = tmp; + + return outcol; +} + +color node_mix_hue(float t, color col1, color col2) +{ + color outcol = col1; + color hsv2 = rgb_to_hsv(col2); + + if(hsv2[1] != 0.0) { + color hsv = rgb_to_hsv(outcol); + hsv[0] = hsv2[0]; + color tmp = hsv_to_rgb(hsv); + + outcol = mix(outcol, tmp, t); + } + + return outcol; +} + +color node_mix_sat(float t, color col1, color col2) +{ + float tm = 1.0 - t; + + color outcol = col1; + + color hsv = rgb_to_hsv(outcol); + + if(hsv[1] != 0.0) { + color hsv2 = rgb_to_hsv(col2); + + hsv[1] = tm*hsv[1] + t*hsv2[1]; + outcol = hsv_to_rgb(hsv); + } + + return outcol; +} + +color node_mix_val(float t, color col1, color col2) +{ + float tm = 1.0 - t; + + color hsv = rgb_to_hsv(col1); + color hsv2 = rgb_to_hsv(col2); + + hsv[2] = tm*hsv[2] + t*hsv2[2]; + + return hsv_to_rgb(hsv); +} + +color node_mix_color(float t, color col1, color col2) +{ + color outcol = col1; + color hsv2 = rgb_to_hsv(col2); + + if(hsv2[1] != 0.0) { + color hsv = rgb_to_hsv(outcol); + hsv[0] = hsv2[0]; + hsv[1] = hsv2[1]; + color tmp = hsv_to_rgb(hsv); + + outcol = mix(outcol, tmp, t); + } + + return outcol; +} + +color node_mix_soft(float t, color col1, color col2) +{ + float tm = 1.0 - t; + + color one= color(1.0); + color scr= one - (one - col2)*(one - col1); + + return tm*col1 + t*((one - col1)*col2*col1 + col1*scr); +} + +color node_mix_linear(float t, color col1, color col2) +{ + color outcol = col1; + + if(col2[0] > 0.5) + outcol[0]= col1[0] + t*(2.0*(col2[0] - 0.5)); + else + outcol[0]= col1[0] + t*(2.0*(col2[0]) - 1.0); + + if(col2[1] > 0.5) + outcol[1]= col1[1] + t*(2.0*(col2[1] - 0.5)); + else + outcol[1]= col1[1] + t*(2.0*(col2[1]) - 1.0); + + if(col2[2] > 0.5) + outcol[2]= col1[2] + t*(2.0*(col2[2] - 0.5)); + else + outcol[2]= col1[2] + t*(2.0*(col2[2]) - 1.0); + + return outcol; +} + +shader node_mix( + string type = "Mix", + float Fac = 0.5, + color Color1 = color(0.0, 0.0, 0.0), + color Color2 = color(0.0, 0.0, 0.0), + output color Color = color(0.0, 0.0, 0.0)) +{ + float t = clamp(Fac, 0.0, 1.0); + + if(type == "Mix") + Color = node_mix_blend(t, Color1, Color2); + if(type == "Add") + Color = node_mix_add(t, Color1, Color2); + if(type == "Multiply") + Color = node_mix_mul(t, Color1, Color2); + if(type == "Screen") + Color = node_mix_screen(t, Color1, Color2); + if(type == "Overlay") + Color = node_mix_overlay(t, Color1, Color2); + if(type == "Subtract") + Color = node_mix_sub(t, Color1, Color2); + if(type == "Divide") + Color = node_mix_div(t, Color1, Color2); + if(type == "Difference") + Color = node_mix_diff(t, Color1, Color2); + if(type == "Darken") + Color = node_mix_dark(t, Color1, Color2); + if(type == "Lighten") + Color = node_mix_light(t, Color1, Color2); + if(type == "Dodge") + Color = node_mix_dodge(t, Color1, Color2); + if(type == "Burn") + Color = node_mix_burn(t, Color1, Color2); + if(type == "Hue") + Color = node_mix_hue(t, Color1, Color2); + if(type == "Saturation") + Color = node_mix_sat(t, Color1, Color2); + if(type == "Value") + Color = node_mix_val (t, Color1, Color2); + if(type == "Color") + Color = node_mix_color(t, Color1, Color2); + if(type == "Soft Light") + Color = node_mix_soft(t, Color1, Color2); + if(type == "Linear Light") + Color = node_mix_linear(t, Color1, Color2); +} + |