mirror of
https://github.com/Ttanasart-pt/Pixel-Composer.git
synced 2024-09-21 04:41:52 +02:00
242 lines
6.8 KiB
GLSL
242 lines
6.8 KiB
GLSL
varying vec2 v_vTexcoord;
|
|
varying vec4 v_vColour;
|
|
|
|
#define PI 3.14159265359
|
|
#define PALETTE_LIMIT 128
|
|
|
|
uniform vec2 dimension;
|
|
uniform vec2 position;
|
|
uniform int blend;
|
|
uniform float progress;
|
|
|
|
uniform vec2 amount;
|
|
uniform int amountUseSurf;
|
|
uniform sampler2D amountSurf;
|
|
|
|
uniform vec2 angle;
|
|
uniform int angleUseSurf;
|
|
uniform sampler2D angleSurf;
|
|
|
|
uniform vec2 randomAmount;
|
|
uniform int randomAmountUseSurf;
|
|
uniform sampler2D randomAmountSurf;
|
|
|
|
uniform vec2 ratio;
|
|
uniform int ratioUseSurf;
|
|
uniform sampler2D ratioSurf;
|
|
|
|
uniform int coloring;
|
|
uniform vec4 color0;
|
|
uniform vec4 color1;
|
|
|
|
uniform vec4 palette[PALETTE_LIMIT];
|
|
uniform int paletteAmount;
|
|
|
|
#region //////////////////////////////////// GRADIENT ////////////////////////////////////
|
|
#define GRADIENT_LIMIT 128
|
|
|
|
uniform int gradient_blend;
|
|
uniform vec4 gradient_color[GRADIENT_LIMIT];
|
|
uniform float gradient_time[GRADIENT_LIMIT];
|
|
uniform int gradient_keys;
|
|
uniform int gradient_use_map;
|
|
uniform vec4 gradient_map_range;
|
|
uniform sampler2D gradient_map;
|
|
|
|
vec3 linearToGamma(vec3 c) { return pow(c, vec3( 2.2)); }
|
|
vec3 gammaToLinear(vec3 c) { return pow(c, vec3(1. / 2.2)); }
|
|
|
|
vec3 rgbMix(vec3 c1, vec3 c2, float t) { #region
|
|
vec3 k1 = linearToGamma(c1);
|
|
vec3 k2 = linearToGamma(c2);
|
|
|
|
return gammaToLinear(mix(k1, k2, t));
|
|
} #endregion
|
|
|
|
vec3 rgb2oklab(vec3 c) { #region
|
|
const mat3 kCONEtoLMS = mat3(
|
|
0.4121656120, 0.2118591070, 0.0883097947,
|
|
0.5362752080, 0.6807189584, 0.2818474174,
|
|
0.0514575653, 0.1074065790, 0.6302613616);
|
|
|
|
c = pow(c, vec3(2.2));
|
|
c = pow( kCONEtoLMS * c, vec3(1.0 / 3.0) );
|
|
|
|
return c;
|
|
} #endregion
|
|
|
|
vec3 oklab2rgb(vec3 c) { #region
|
|
const mat3 kLMStoCONE = mat3(
|
|
4.0767245293, -1.2681437731, -0.0041119885,
|
|
-3.3072168827, 2.6093323231, -0.7034763098,
|
|
0.2307590544, -0.3411344290, 1.7068625689);
|
|
|
|
c = kLMStoCONE * (c * c * c);
|
|
c = pow(c, vec3(1. / 2.2));
|
|
|
|
return c;
|
|
} #endregion
|
|
|
|
vec3 oklabMax(vec3 c1, vec3 c2, float t) { #region
|
|
vec3 k1 = rgb2oklab(c1);
|
|
vec3 k2 = rgb2oklab(c2);
|
|
|
|
return oklab2rgb(mix(k1, k2, t));
|
|
} #endregion
|
|
|
|
vec3 rgb2hsv(vec3 c) { #region
|
|
vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
|
|
vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));
|
|
vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));
|
|
|
|
float d = q.x - min(q.w, q.y);
|
|
float e = 0.0000000001;
|
|
return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
|
|
} #endregion
|
|
|
|
vec3 hsv2rgb(vec3 c) { #region
|
|
vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
|
|
vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);
|
|
return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
|
|
} #endregion
|
|
|
|
float hueDist(float a0, float a1, float t) { #region
|
|
float da = fract(a1 - a0);
|
|
float ds = fract(2. * da) - da;
|
|
return a0 + ds * t;
|
|
} #endregion
|
|
|
|
vec3 hsvMix(vec3 c1, vec3 c2, float t) { #region
|
|
vec3 h1 = rgb2hsv(c1);
|
|
vec3 h2 = rgb2hsv(c2);
|
|
|
|
vec3 h = vec3(0.);
|
|
h.x = h.x + hueDist(h1.x, h2.x, t);
|
|
h.y = mix(h1.y, h2.y, t);
|
|
h.z = mix(h1.z, h2.z, t);
|
|
|
|
return hsv2rgb(h);
|
|
} #endregion
|
|
|
|
vec4 gradientEval(in float prog) { #region
|
|
if(gradient_use_map == 1) {
|
|
vec2 samplePos = mix(gradient_map_range.xy, gradient_map_range.zw, prog);
|
|
return texture2D( gradient_map, samplePos );
|
|
}
|
|
|
|
vec4 col = vec4(0.);
|
|
|
|
for(int i = 0; i < GRADIENT_LIMIT; i++) {
|
|
if(gradient_time[i] == prog) {
|
|
col = gradient_color[i];
|
|
break;
|
|
} else if(gradient_time[i] > prog) {
|
|
if(i == 0)
|
|
col = gradient_color[i];
|
|
else {
|
|
float t = (prog - gradient_time[i - 1]) / (gradient_time[i] - gradient_time[i - 1]);
|
|
vec3 c0 = gradient_color[i - 1].rgb;
|
|
vec3 c1 = gradient_color[i].rgb;
|
|
float a = mix(gradient_color[i - 1].a, gradient_color[i].a, t);
|
|
|
|
if(gradient_blend == 0)
|
|
col = vec4(mix(c0, c1, t), a);
|
|
|
|
else if(gradient_blend == 1)
|
|
col = gradient_color[i - 1];
|
|
|
|
else if(gradient_blend == 2)
|
|
col = vec4(hsvMix(c0, c1, t), a);
|
|
|
|
else if(gradient_blend == 3)
|
|
col = vec4(oklabMax(c0, c1, t), a);
|
|
|
|
else if(gradient_blend == 4)
|
|
col = vec4(rgbMix(c0, c1, t), a);
|
|
}
|
|
break;
|
|
}
|
|
if(i >= gradient_keys - 1) {
|
|
col = gradient_color[gradient_keys - 1];
|
|
break;
|
|
}
|
|
}
|
|
|
|
return col;
|
|
} #endregion
|
|
|
|
#endregion //////////////////////////////////// GRADIENT ////////////////////////////////////
|
|
|
|
float random (in vec2 st) { return fract(sin(dot(st.xy, vec2(12.9898, 78.233))) * 43758.5453123); }
|
|
|
|
void main() { #region
|
|
#region params
|
|
float amo = amount.x;
|
|
if(amountUseSurf == 1) {
|
|
vec4 _vMap = texture2D( amountSurf, v_vTexcoord );
|
|
amo = mix(amount.x, amount.y, (_vMap.r + _vMap.g + _vMap.b) / 3.);
|
|
}
|
|
|
|
float ang = angle.x;
|
|
if(angleUseSurf == 1) {
|
|
vec4 _vMap = texture2D( angleSurf, v_vTexcoord );
|
|
ang = mix(angle.x, angle.y, (_vMap.r + _vMap.g + _vMap.b) / 3.);
|
|
}
|
|
ang = radians(ang);
|
|
|
|
float rnd = randomAmount.x;
|
|
if(randomAmountUseSurf == 1) {
|
|
vec4 _vMap = texture2D( randomAmountSurf, v_vTexcoord );
|
|
rnd = mix(randomAmount.x, randomAmount.y, (_vMap.r + _vMap.g + _vMap.b) / 3.);
|
|
}
|
|
|
|
float rat = ratio.x;
|
|
if(ratioUseSurf == 1) {
|
|
vec4 _vMap = texture2D( ratioSurf, v_vTexcoord );
|
|
rat = mix(ratio.x, ratio.y, (_vMap.r + _vMap.g + _vMap.b) / 3.);
|
|
}
|
|
#endregion
|
|
|
|
vec2 pos = v_vTexcoord - position;
|
|
float aspect = dimension.x / dimension.y;
|
|
float prog = pos.x * aspect * cos(ang) - pos.y * sin(ang);
|
|
float _a = 1. / amo;
|
|
|
|
float slot = floor(prog / _a);
|
|
float ground = (slot + (random(vec2(slot + 0.)) * 2. - 1.) * rnd * 0.5 + 0.) * _a;
|
|
float ceiling = (slot + (random(vec2(slot + 1.)) * 2. - 1.) * rnd * 0.5 + 1.) * _a;
|
|
float _s = fract((prog - ground) / (ceiling - ground) + progress);
|
|
|
|
if(coloring == 0) {
|
|
if(blend == 0) gl_FragColor = _s > rat? color0 : color1;
|
|
|
|
else if(blend == 1) {
|
|
_s = sin(_s * 2. * PI) * 0.5 + 0.5;
|
|
gl_FragColor = mix(color0, color1, _s);
|
|
|
|
} else if(blend == 2) {
|
|
float px = 3. / max(dimension.x, dimension.y);
|
|
_s = smoothstep(-px, px, sin(_s * 2. * PI));
|
|
|
|
gl_FragColor = mix(color0, color1, _s);
|
|
}
|
|
|
|
} else if(coloring == 1) {
|
|
int ind = int(mod(_s > rat? slot : slot + 1., float(paletteAmount)));
|
|
|
|
if(blend == 0 || blend == 2)
|
|
gl_FragColor = palette[ind];
|
|
|
|
else if(blend == 1) {
|
|
vec4 c0 = _s > rat? palette[ind] : palette[int(mod(float(ind - 1 + paletteAmount), float(paletteAmount)))];
|
|
vec4 c1 = _s > rat? palette[int(mod(float(ind + 1), float(paletteAmount)))] : palette[ind];
|
|
|
|
gl_FragColor = mix(c0, c1, _s > rat? _s - rat : _s + (1. - rat));
|
|
|
|
}
|
|
|
|
} else if(coloring == 2) {
|
|
gl_FragColor = gradientEval(random(vec2(_s > rat? slot : slot + 1.)));
|
|
}
|
|
} #endregion
|