59 lines
1.5 KiB
Plaintext
59 lines
1.5 KiB
Plaintext
{
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"name": "adjust_hsv",
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"node_position": {
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"x": 0,
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"y": 0
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},
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"parameters": {
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"hue": 0,
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"saturation": 1,
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"value": 1
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},
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"shader_model": {
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"global": "vec3 rgb_to_hsv(vec3 c) {\n\tvec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);\n\tvec4 p = c.g < c.b ? vec4(c.bg, K.wz) : vec4(c.gb, K.xy);\n\tvec4 q = c.r < p.x ? vec4(p.xyw, c.r) : vec4(c.r, p.yzx);\n\n\tfloat d = q.x - min(q.w, q.y);\n\tfloat e = 1.0e-10;\n\treturn vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);\n}\n\nvec3 hsv_to_rgb(vec3 c) {\n\tvec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);\n\tvec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);\n\treturn c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);\n}\n",
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"inputs": [
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{
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"default": "vec4($uv.x, $uv.y, 0.0, 1.0)",
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"label": "",
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"name": "in",
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"type": "rgba"
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}
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],
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"instance": "vec4 $(name)_f(vec4 c) {\n\tvec3 hsv = rgb_to_hsv(c.rgb);\n\treturn vec4(hsv_to_rgb(vec3(fract(hsv.x+$(hue)), clamp(hsv.y*$(saturation), 0.0, 1.0), clamp(hsv.z*$(value), 0.0, 1.0))), c.a);\n}",
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"name": "AdjustHSV",
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"outputs": [
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{
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"rgba": "$(name)_f($in($(uv)))"
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}
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],
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"parameters": [
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{
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"default": 0,
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"label": "Hue",
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"max": 0.5,
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"min": -0.5,
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"name": "hue",
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"step": 0,
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"type": "float"
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},
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{
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"default": 1,
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"label": "Saturation",
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"max": 2,
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"min": 0,
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"name": "saturation",
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"step": 0,
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"type": "float"
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},
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{
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"default": 1,
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"label": "Value",
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"max": 2,
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"min": 0,
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"name": "value",
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"step": 0,
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"type": "float"
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}
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]
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}
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} |