mirror of
https://github.com/Ttanasart-pt/Pixel-Composer.git
synced 2024-11-13 05:53:53 +01:00
269 lines
7.4 KiB
GLSL
269 lines
7.4 KiB
GLSL
varying vec2 v_vTexcoord;
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varying vec4 v_vColour;
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uniform vec2 dimension;
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uniform vec2 position;
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uniform float seed;
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uniform int mode;
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uniform int aa;
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uniform vec2 scale;
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uniform int scaleUseSurf;
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uniform sampler2D scaleSurf;
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uniform vec2 angle;
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uniform int angleUseSurf;
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uniform sampler2D angleSurf;
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uniform vec2 thick;
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uniform int thickUseSurf;
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uniform sampler2D thickSurf;
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uniform vec4 gapCol;
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uniform int gradient_use;
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uniform int textureTruchet;
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uniform float truchetSeed;
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uniform float truchetThres;
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uniform vec2 truchetAngle;
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uniform vec2 level;
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#define PI 3.14159265359
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#define TAU 6.28318530718
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float random (in vec2 st) { return fract(sin(dot(st.xy + vec2(85.456034, 64.54065), vec2(12.9898, 78.233))) * (43758.5453123 + seed) ); }
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#region //////////////////////////////////// GRADIENT ////////////////////////////////////
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#define GRADIENT_LIMIT 128
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uniform int gradient_blend;
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uniform vec4 gradient_color[GRADIENT_LIMIT];
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uniform float gradient_time[GRADIENT_LIMIT];
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uniform int gradient_keys;
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uniform int gradient_use_map;
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uniform vec4 gradient_map_range;
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uniform sampler2D gradient_map;
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vec3 linearToGamma(vec3 c) { return pow(c, vec3( 2.2)); }
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vec3 gammaToLinear(vec3 c) { return pow(c, vec3(1. / 2.2)); }
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vec3 rgbMix(vec3 c1, vec3 c2, float t) { #region
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vec3 k1 = linearToGamma(c1);
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vec3 k2 = linearToGamma(c2);
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return gammaToLinear(mix(k1, k2, t));
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} #endregion
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vec3 rgb2oklab(vec3 c) { #region
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const mat3 kCONEtoLMS = mat3(
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0.4121656120, 0.2118591070, 0.0883097947,
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0.5362752080, 0.6807189584, 0.2818474174,
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0.0514575653, 0.1074065790, 0.6302613616);
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c = pow(c, vec3(2.2));
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c = pow( kCONEtoLMS * c, vec3(1.0 / 3.0) );
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return c;
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} #endregion
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vec3 oklab2rgb(vec3 c) { #region
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const mat3 kLMStoCONE = mat3(
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4.0767245293, -1.2681437731, -0.0041119885,
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-3.3072168827, 2.6093323231, -0.7034763098,
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0.2307590544, -0.3411344290, 1.7068625689);
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c = kLMStoCONE * (c * c * c);
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c = pow(c, vec3(1. / 2.2));
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return c;
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} #endregion
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vec3 oklabMax(vec3 c1, vec3 c2, float t) { #region
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vec3 k1 = rgb2oklab(c1);
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vec3 k2 = rgb2oklab(c2);
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return oklab2rgb(mix(k1, k2, t));
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} #endregion
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vec3 rgb2hsv(vec3 c) { #region
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vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
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vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));
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vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));
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float d = q.x - min(q.w, q.y);
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float e = 0.0000000001;
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return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
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} #endregion
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vec3 hsv2rgb(vec3 c) { #region
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vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
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vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);
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return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
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} #endregion
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float hueDist(float a0, float a1, float t) { #region
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float da = fract(a1 - a0);
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float ds = fract(2. * da) - da;
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return a0 + ds * t;
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} #endregion
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vec3 hsvMix(vec3 c1, vec3 c2, float t) { #region
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vec3 h1 = rgb2hsv(c1);
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vec3 h2 = rgb2hsv(c2);
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vec3 h = vec3(0.);
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h.x = h.x + hueDist(h1.x, h2.x, t);
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h.y = mix(h1.y, h2.y, t);
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h.z = mix(h1.z, h2.z, t);
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return hsv2rgb(h);
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} #endregion
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vec4 gradientEval(in float prog) { #region
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if(gradient_use_map == 1) {
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vec2 samplePos = mix(gradient_map_range.xy, gradient_map_range.zw, prog);
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return texture2D( gradient_map, samplePos );
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}
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vec4 col = vec4(0.);
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for(int i = 0; i < GRADIENT_LIMIT; i++) {
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if(gradient_time[i] == prog) {
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col = gradient_color[i];
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break;
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} else if(gradient_time[i] > prog) {
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if(i == 0)
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col = gradient_color[i];
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else {
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float t = (prog - gradient_time[i - 1]) / (gradient_time[i] - gradient_time[i - 1]);
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vec3 c0 = gradient_color[i - 1].rgb;
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vec3 c1 = gradient_color[i].rgb;
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float a = mix(gradient_color[i - 1].a, gradient_color[i].a, t);
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if(gradient_blend == 0)
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col = vec4(mix(c0, c1, t), a);
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else if(gradient_blend == 1)
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col = gradient_color[i - 1];
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else if(gradient_blend == 2)
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col = vec4(hsvMix(c0, c1, t), a);
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else if(gradient_blend == 3)
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col = vec4(oklabMax(c0, c1, t), a);
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else if(gradient_blend == 4)
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col = vec4(rgbMix(c0, c1, t), a);
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}
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break;
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}
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if(i >= gradient_keys - 1) {
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col = gradient_color[gradient_keys - 1];
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break;
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}
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}
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return col;
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} #endregion
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#endregion //////////////////////////////////// GRADIENT ////////////////////////////////////
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float round(float val) { return fract(val) >= 0.5? ceil(val) : floor(val); }
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vec4 RandomCoords(vec2 uv) { #region
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vec2 fl = floor(uv);
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vec2 fr = fract(uv);
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bool ch = mod(fl.x + fl.y, 2.) > .5;
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float r1 = random(fl);
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vec2 ax = ch ? fr.xy : fr.yx;
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float a1 = ax.x - r1;
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float si = sign(a1);
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vec2 o1 = ch ? vec2(si, 0.) : vec2(0., si);
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float r2 = random(fl + o1);
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float a2 = ax.y - r2;
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vec2 st = step(vec2(0.), vec2(a1, a2));
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vec2 of = ch ? st.xy : st.yx;
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vec2 id = fl + of - 1.;
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bool ch2 = mod(id.x + id.y, 2.) > .5;
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float r00 = random(id + vec2(0., 0.));
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float r10 = random(id + vec2(1., 0.));
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float r01 = random(id + vec2(0., 1.));
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float r11 = random(id + vec2(1., 1.));
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vec2 s0 = ch2 ? vec2(r00, r10) : vec2(r01, r00);
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vec2 s1 = ch2 ? vec2(r11, r01) : vec2(r10, r11);
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vec2 s = 1. - s0 + s1;
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vec2 puv = (uv - id - s0) / s;
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vec2 b = (.5 - abs(puv - .5)) * s;
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float d = min(b.x, b.y);
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return vec4(random(id), d, puv);
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} #endregion
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void main() { #region
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#region params
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vec2 sca = scale;
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if(scaleUseSurf == 1) {
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vec4 _vMap = texture2D( scaleSurf, v_vTexcoord );
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sca = vec2(mix(scale.x, scale.y, (_vMap.r + _vMap.g + _vMap.b) / 3.));
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}
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float ang = angle.x;
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if(angleUseSurf == 1) {
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vec4 _vMap = texture2D( angleSurf, v_vTexcoord );
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ang = mix(angle.x, angle.y, (_vMap.r + _vMap.g + _vMap.b) / 3.);
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}
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ang = radians(ang);
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float thk = thick.x;
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if(thickUseSurf == 1) {
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vec4 _vMap = texture2D( thickSurf, v_vTexcoord );
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thk = mix(thick.x, thick.y, (_vMap.r + _vMap.g + _vMap.b) / 3.);
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}
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#endregion
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vec2 pos = (v_vTexcoord - position) * sca, _pos;
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float ratio = dimension.x / dimension.y;
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_pos.x = pos.x * ratio * cos(ang) - pos.y * sin(ang);
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_pos.y = pos.x * ratio * sin(ang) + pos.y * cos(ang);
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vec4 hc = RandomCoords(_pos);
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vec4 colr;
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if(mode == 1) {
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float dist = (hc.y - level.x) / (level.y - level.x);
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gl_FragColor = vec4(vec3(dist), 1.0);
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return;
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}
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if(mode == 0) {
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colr = gradientEval(hc.x);
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} else if(mode == 2) {
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vec2 uv = hc.zw;
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if(textureTruchet == 1) {
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float rx = random(floor(hc.zw / sca) + truchetSeed / 1000.);
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float ry = random(floor(hc.zw / sca) + truchetSeed / 1000. + vec2(0.4864, 0.6879));
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if(rx > truchetThres) uv.x = 1. - uv.x;
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if(ry > truchetThres) uv.y = 1. - uv.y;
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float ang = radians(truchetAngle.x + (truchetAngle.y - truchetAngle.x) * random(floor(hc.zw / sca) + truchetSeed / 100. + vec2(0.9843, 0.1636)));
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uv = 0.5 + mat2(cos(ang), -sin(ang), sin(ang), cos(ang)) * (uv - 0.5);
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}
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colr = texture2D( gm_BaseTexture, uv );
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}
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float _aa = 3. / max(dimension.x, dimension.y);
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gl_FragColor = mix(gapCol, colr, aa == 1? smoothstep(thk - _aa, thk, hc.y) : step(thk, hc.y));
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} #endregion |