diff options
author | Hallam Roberts <MysteryPancake> | 2022-05-04 19:44:03 +0300 |
---|---|---|
committer | Hans Goudey <h.goudey@me.com> | 2022-05-04 19:44:03 +0300 |
commit | 82df48227bb7742466d429a5b465e0ada95d959d (patch) | |
tree | 59a44fc91b211beac52fb50002b51012f41931ed /intern/cycles/kernel/osl | |
parent | 7d41e1ed40ad74368a1019db554e47c6ab1baedb (diff) |
Nodes: Add general Combine/Separate Color nodes
Inspired by D12936 and D12929, this patch adds general purpose
"Combine Color" and "Separate Color" nodes to Geometry, Compositor,
Shader and Texture nodes.
- Within Geometry Nodes, it replaces the existing "Combine RGB" and
"Separate RGB" nodes.
- Within Compositor Nodes, it replaces the existing
"Combine RGBA/HSVA/YCbCrA/YUVA" and "Separate RGBA/HSVA/YCbCrA/YUVA"
nodes.
- Within Texture Nodes, it replaces the existing "Combine RGBA" and
"Separate RGBA" nodes.
- Within Shader Nodes, it replaces the existing "Combine RGB/HSV" and
"Separate RGB/HSV" nodes.
Python addons have not been updated to the new nodes yet.
**New shader code**
In node_color.h, color.h and gpu_shader_material_color_util.glsl,
missing methods hsl_to_rgb and rgb_to_hsl are added by directly
converting existing C code. They always produce the same result.
**Old code**
As requested by T96219, old nodes still exist but are not displayed in
the add menu. This means Python scripts can still create them as usual.
Otherwise, versioning replaces the old nodes with the new nodes when
opening .blend files.
Differential Revision: https://developer.blender.org/D14034
Diffstat (limited to 'intern/cycles/kernel/osl')
4 files changed, 90 insertions, 0 deletions
diff --git a/intern/cycles/kernel/osl/shaders/CMakeLists.txt b/intern/cycles/kernel/osl/shaders/CMakeLists.txt index 7ced21c5670..741bce7c399 100644 --- a/intern/cycles/kernel/osl/shaders/CMakeLists.txt +++ b/intern/cycles/kernel/osl/shaders/CMakeLists.txt @@ -16,6 +16,7 @@ set(SRC_OSL node_camera.osl node_checker_texture.osl node_clamp.osl + node_combine_color.osl node_combine_rgb.osl node_combine_hsv.osl node_combine_xyz.osl @@ -68,6 +69,7 @@ set(SRC_OSL node_refraction_bsdf.osl node_rgb_curves.osl node_rgb_ramp.osl + node_separate_color.osl node_separate_rgb.osl node_separate_hsv.osl node_separate_xyz.osl diff --git a/intern/cycles/kernel/osl/shaders/node_color.h b/intern/cycles/kernel/osl/shaders/node_color.h index 388dd114e9a..06735f5b03d 100644 --- a/intern/cycles/kernel/osl/shaders/node_color.h +++ b/intern/cycles/kernel/osl/shaders/node_color.h @@ -148,3 +148,53 @@ color hsv_to_rgb(color hsv) return rgb; } + +color rgb_to_hsl(color rgb) +{ + float cmax, cmin, h, s, l; + + cmax = max(rgb[0], max(rgb[1], rgb[2])); + cmin = min(rgb[0], min(rgb[1], rgb[2])); + l = min(1.0, (cmax + cmin) / 2.0); + + if (cmax == cmin) { + h = s = 0.0; /* achromatic */ + } + else { + float cdelta = cmax - cmin; + s = l > 0.5 ? cdelta / (2.0 - cmax - cmin) : cdelta / (cmax + cmin); + if (cmax == rgb[0]) { + h = (rgb[1] - rgb[2]) / cdelta + (rgb[1] < rgb[2] ? 6.0 : 0.0); + } + else if (cmax == rgb[1]) { + h = (rgb[2] - rgb[0]) / cdelta + 2.0; + } + else { + h = (rgb[0] - rgb[1]) / cdelta + 4.0; + } + } + h /= 6.0; + + return color(h, s, l); +} + +color hsl_to_rgb(color hsl) +{ + float nr, ng, nb, chroma, h, s, l; + + h = hsl[0]; + s = hsl[1]; + l = hsl[2]; + + nr = abs(h * 6.0 - 3.0) - 1.0; + ng = 2.0 - abs(h * 6.0 - 2.0); + nb = 2.0 - abs(h * 6.0 - 4.0); + + nr = clamp(nr, 0.0, 1.0); + nb = clamp(nb, 0.0, 1.0); + ng = clamp(ng, 0.0, 1.0); + + chroma = (1.0 - abs(2.0 * l - 1.0)) * s; + + return color((nr - 0.5) * chroma + l, (ng - 0.5) * chroma + l, (nb - 0.5) * chroma + l); +} diff --git a/intern/cycles/kernel/osl/shaders/node_combine_color.osl b/intern/cycles/kernel/osl/shaders/node_combine_color.osl new file mode 100644 index 00000000000..94d624d82ad --- /dev/null +++ b/intern/cycles/kernel/osl/shaders/node_combine_color.osl @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: Apache-2.0 + * Copyright 2011-2022 Blender Foundation */ + +#include "stdcycles.h" + +shader node_combine_color(string color_type = "rgb", float Red = 0.0, float Green = 0.0, float Blue = 0.0, output color Color = 0.8) +{ + if (color_type == "rgb" || color_type == "hsv" || color_type == "hsl") + Color = color(color_type, Red, Green, Blue); + else + warning("%s", "Unknown color space!"); +} diff --git a/intern/cycles/kernel/osl/shaders/node_separate_color.osl b/intern/cycles/kernel/osl/shaders/node_separate_color.osl new file mode 100644 index 00000000000..cba2d85da05 --- /dev/null +++ b/intern/cycles/kernel/osl/shaders/node_separate_color.osl @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: Apache-2.0 + * Copyright 2011-2022 Blender Foundation */ + +#include "node_color.h" +#include "stdcycles.h" + +shader node_separate_color(string color_type = "rgb", + color Color = 0.8, + output float Red = 0.0, + output float Green = 0.0, + output float Blue = 0.0) +{ + color col; + if (color_type == "rgb") + col = Color; + else if (color_type == "hsv") + col = rgb_to_hsv(Color); + else if (color_type == "hsl") + col = rgb_to_hsl(Color); + else + warning("%s", "Unknown color space!"); + + Red = col[0]; + Green = col[1]; + Blue = col[2]; +} |