Justin Garza
569 lines
15 KiB
GLSL
569 lines
15 KiB
GLSL
//////////////////////////////////////////////////////////////////////////////////////////
|
|
// ) ( //
|
|
// ( /( ( ( ) ( ( ( ( )\ ) ( ( //
|
|
// )\()) ))\ )( ( ( )\ ) )\))( )\ ( (()/( ( )\))( ( //
|
|
// ((_)\ /((_|()\ )\ ) )\ '(()/( ((_)()((_) )\ ) ((_)))\((_)()\ )\ //
|
|
// | |(_|_))( ((_)_(_/( _((_)) )(_)) _(()((_|_)_(_/( _| |((_)(()((_|(_) //
|
|
// | '_ \ || | '_| ' \)) | ' \()| || | \ V V / | ' \)) _` / _ \ V V (_-< //
|
|
// |_.__/\_,_|_| |_||_| |_|_|_| \_, | \_/\_/|_|_||_|\__,_\___/\_/\_//__/ //
|
|
// |__/ //
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
// SPDX-FileCopyrightText: Justin Garza JGarza9788@gmail.com
|
|
// SPDX-License-Identifier: GPL-3.0-or-later
|
|
|
|
// The content from common.glsl is automatically prepended to each shader effect. This
|
|
// provides the standard input:
|
|
|
|
// vec2 iTexCoord: Texture coordinates for retrieving the window input color.
|
|
// bool uIsFullscreen: True if the window is maximized or in fullscreen mode.
|
|
// bool uForOpening: True if a window-open animation is ongoing, false otherwise.
|
|
// float uProgress: A value which transitions from 0 to 1 during the animation.
|
|
// float uDuration: The duration of the current animation in seconds.
|
|
// vec2 uSize: The size of uTexture in pixels.
|
|
// float uPadding: The empty area around the actual window (e.g. where the shadow
|
|
// is drawn). For now, this will only be set on GNOME.
|
|
|
|
// Furthermore, there are two global methods for reading the window input color and
|
|
// setting the shader output color. Both methods assume straight alpha:
|
|
|
|
// vec4 getInputColor(vec2 coords)
|
|
// void setOutputColor(vec4 outColor)
|
|
|
|
// The width of the fading effect is loaded from the settings.
|
|
|
|
uniform bool uParticles;
|
|
uniform float uParticleSize;
|
|
uniform float uParticleSpeed;
|
|
uniform float uParticleColorRandom;
|
|
uniform float uParticleColorSpeed;
|
|
uniform float uSparkCount;
|
|
uniform vec2 uSparkStartEnd;
|
|
uniform float uSparkOffset;
|
|
uniform float uStarCount;
|
|
uniform float uStarRot;
|
|
uniform float uStarSize;
|
|
uniform vec2 uStarStartEnd;
|
|
uniform float uBlurQuality;
|
|
uniform float uSeed;
|
|
|
|
|
|
//particle colors
|
|
uniform vec4 uParticleColor0;
|
|
uniform vec4 uParticleColor1;
|
|
uniform vec4 uParticleColor2;
|
|
uniform vec4 uParticleColor3;
|
|
uniform vec4 uParticleColor4;
|
|
uniform vec4 uParticleColor5;
|
|
|
|
//star colors
|
|
uniform vec4 uStarColor0;
|
|
uniform vec4 uStarColor1;
|
|
uniform vec4 uStarColor2;
|
|
uniform vec4 uStarColor3;
|
|
uniform vec4 uStarColor4;
|
|
uniform vec4 uStarColor5;
|
|
|
|
|
|
|
|
/*
|
|
bool uParticles = True;
|
|
float uParticleSize = 100.0;
|
|
float uParticleSpeed = 10.0;
|
|
float uParticleColorRandom = 1.0;
|
|
float uParticleColorSpeed = 1.0;
|
|
|
|
float uSparkCount = 50.0;
|
|
vec2 uSparkStartEnd = vec2(0.1,0.75);
|
|
float uSparkOffset = 0.25;
|
|
|
|
float uStarCount = 5.0;
|
|
float uStarRot = 1.0;
|
|
float uStarSize = 0.1;
|
|
vec2 uStarStartEnd = vec2(0.0,0.66);
|
|
|
|
float uBlurQuality = 5.0;
|
|
vec4 uSeed = vec4(1.0,0.1,0.5,1.0);
|
|
|
|
|
|
//bold colors
|
|
vec4 uParticleColor0 = vec4(1.0, 0.0, 0.0, 0.0);
|
|
vec4 uParticleColor1 = vec4(1.0, 1.0, 0.0, 0.0);
|
|
vec4 uParticleColor2 = vec4(0.0, 1.0, 0.0, 0.0);
|
|
vec4 uParticleColor3 = vec4(0.0, 0.0, 1.0, 0.0);
|
|
vec4 uParticleColor4 = vec4(1.0, 0.0, 1.0, 0.0);
|
|
vec4 uParticleColor5 = vec4(0.0, 1.0, 1.0, 0.0);
|
|
|
|
|
|
vec4 uStarColor0 = vec4(1.0, 0.0, 0.0, 0.0);
|
|
vec4 uStarColor1 = vec4(1.0, 1.0, 0.0, 0.0);
|
|
vec4 uStarColor2 = vec4(0.0, 1.0, 0.0, 0.0);
|
|
vec4 uStarColor3 = vec4(0.0, 0.0, 1.0, 0.0);
|
|
vec4 uStarColor4 = vec4(1.0, 0.0, 1.0, 0.0);
|
|
vec4 uStarColor5 = vec4(1.0, 0.0, 0.0, 0.0);
|
|
*/
|
|
|
|
|
|
|
|
|
|
// Define a constant for 2 * PI (tau), which represents a full circle in radians.
|
|
const float PI = 3.14159265359;
|
|
const float tau = 6.28318530718;
|
|
|
|
//helps to find the angle
|
|
vec3 getPosByAngle(float angle)
|
|
{
|
|
return vec3(cos(angle), sin(angle), 0);
|
|
}
|
|
|
|
//this returns the Spark
|
|
float getSpark(vec2 uv,vec2 center, float brightness, float size, float rotation)
|
|
{
|
|
|
|
//the size
|
|
size = clamp(size,0.001,1.0);
|
|
|
|
uv = (uv + vec2(0.5)) ; //set center
|
|
uv = (uv - center) ;//Center UV coordinates, then scale to fit the star size
|
|
|
|
//scale
|
|
uv = uv * 2.0 -1.0;
|
|
uv /= mix(vec2(1.0,1.0), vec2(0.0,0.0), vec2(1.0 - size));
|
|
uv = uv * 0.5 + 0.5;
|
|
|
|
uv = rotate(uv, rotation, vec2(0.5));
|
|
|
|
|
|
//the brightness of the spark
|
|
brightness = clamp(brightness,0.001,1.0);
|
|
float bn = mix(0.0,0.07,brightness); //recalculate size
|
|
|
|
|
|
//this is basically the brightness
|
|
float p = mix(-1.0,1000.0,easeInExpo(bn));
|
|
|
|
float m = mix(
|
|
0.0,
|
|
1.0,
|
|
clamp(
|
|
pow(abs(uv.x-0.5)*2.0,p) + pow(abs(uv.y-0.5)*2.0,p),0.0,1.0
|
|
)
|
|
);
|
|
|
|
//calcuate and return this mask
|
|
float mask = easeInSine(1.0 - (m - bn)) - 0.004 ;
|
|
mask = clamp(mask,0.0,1.0);
|
|
return mask;
|
|
|
|
}
|
|
|
|
|
|
//this was lifted from aura-glow
|
|
float getMask(float t)
|
|
{
|
|
|
|
// Calculate the aspect ratio of the render area
|
|
float aspect = uSize.x / uSize.y;
|
|
|
|
//standard uv
|
|
vec2 uv = iTexCoord.st;
|
|
|
|
// tuv is for when progress is near 0
|
|
vec2 tuv = uv;
|
|
tuv -= 0.5; // Shift UV coordinates to center (from [-0.5 to 0.5])
|
|
tuv.x *= aspect; // Scale x-coordinate to match aspect ratio
|
|
tuv += 0.5; // Shift UV coordinates back (from [0 to 1])
|
|
|
|
//mixing the UVs
|
|
uv = mix(tuv,uv,t);
|
|
|
|
// this controls the shape
|
|
// -1.0 would be a diamond-ish
|
|
// 0.0 would be a rounded diamond
|
|
// 1.0 would be a circle
|
|
// 2.0 will be sqircle
|
|
// 1000.0 will be very square
|
|
float p = mix(1.0,1000.0,
|
|
easeInExpo(t)
|
|
);
|
|
|
|
//this will be used later to make a mask
|
|
float m = mix(
|
|
0.0,
|
|
1.0,
|
|
clamp(
|
|
pow(abs(uv.x-0.5)*2.0,p) + pow(abs(uv.y-0.5)*2.0,p),0.0,1.0
|
|
)
|
|
);
|
|
|
|
//this is the mask
|
|
//float mask = (m > t) ? 0.0 : 1.0 ;
|
|
float mask = (m > t) ? (1.0 - (m - t)) : 1.0 ;
|
|
mask = clamp(mask,0.0,1.0);
|
|
|
|
return mask;
|
|
}
|
|
|
|
|
|
// A simple blur function
|
|
vec4 blur(vec2 uv, float radius, float samples) {
|
|
// Initialize the color accumulator to zero.
|
|
vec4 color = vec4(0.0);
|
|
|
|
|
|
|
|
// Number of directions for sampling around the circle.
|
|
const float directions = 15.0;
|
|
|
|
// Outer loop iterates over multiple directions evenly spaced around a circle.
|
|
for (float d = 0.0; d < tau; d += tau / directions) {
|
|
// Inner loop samples along each direction, with decreasing intensity.
|
|
for (float s = 0.0; s < 1.0; s += 1.0 / samples) {
|
|
// Calculate the offset for this sample based on direction, radius, and step.
|
|
// The (1.0 - s) term ensures more sampling occurs closer to the center.
|
|
vec2 offset = vec2(cos(d), sin(d)) * radius * (1.0 - s) / uSize;
|
|
|
|
// Add the sampled color at the offset position to the accumulator.
|
|
color += getInputColor(uv + offset);
|
|
}
|
|
}
|
|
|
|
// Normalize the accumulated color by dividing by the total number of samples
|
|
// and directions to ensure the result is averaged.
|
|
return color / samples / directions;
|
|
}
|
|
|
|
|
|
//fades out at 0 and 1 ...based on the power
|
|
// 1| __________
|
|
// | / \
|
|
// | / \
|
|
// | / \
|
|
// |/ \
|
|
// 0|0.................1
|
|
/*
|
|
graph above ... where t is close to 0, or 1 the result will fade to zero
|
|
i.e. this is just the function of power(x,p) shifted
|
|
where x is time, and p is 2.0,4.0,8.0,10.0 ... or any positive even number
|
|
*/
|
|
float FadeInOut(float t, float power)
|
|
{
|
|
float s = -1.0 * pow((t-0.5)/(0.5),power)+1.0;
|
|
s = clamp(s,0.0,1.0);
|
|
return s;
|
|
}
|
|
|
|
float getSparks(float t)
|
|
{
|
|
|
|
|
|
//the UV for this function
|
|
float aspect = uSize.x / uSize.y;
|
|
vec2 uv = iTexCoord.st * vec2(aspect,1.0);
|
|
|
|
float result = 0.0;
|
|
|
|
|
|
for (float i = 0.0; i < uSparkCount ; ++i)
|
|
{
|
|
|
|
vec4 v4 = hash41( i * uSeed.x);
|
|
|
|
|
|
// float speed = (1.0 - t) ;//* v4.y;
|
|
|
|
//the X and Y position ... at the end
|
|
vec3 pos = getPosByAngle( (i/uSparkCount) * tau + (v4.x * 0.3) );
|
|
|
|
//the distance the spark will travel
|
|
float d = mix(0.33,0.34,v4.z) ;
|
|
d = mix(
|
|
uSparkStartEnd.x + (v4.z * uSparkOffset),
|
|
uSparkStartEnd.y - (v4.y * uSparkOffset),
|
|
(1.0 - t)
|
|
);
|
|
|
|
float s = getSpark(
|
|
uv,
|
|
vec2(0.5 * aspect,0.5) + ( pos.xy * d ), //position (x, y)
|
|
FadeInOut(t,8.0) * 0.9 ,//Brightness
|
|
FadeInOut(t,8.0) * (v4.w * 0.5) ,//Size
|
|
0.0 //rotation
|
|
);
|
|
|
|
result += s;
|
|
|
|
}
|
|
|
|
|
|
// result = pow(result,1.0);
|
|
|
|
result *= FadeInOut(iTexCoord.s,8.0);
|
|
result *= FadeInOut(iTexCoord.t,8.0);
|
|
|
|
return clamp(result,0.0,1.0);
|
|
|
|
}
|
|
|
|
|
|
//returns the particle's color
|
|
vec4 getParticleColors(float v, float alpha) {
|
|
// Clamp v to ensure it's in [0.0, 1.0]
|
|
v = clamp(v, 0.0, 1.0);
|
|
|
|
// Define steps for color interpolation
|
|
float steps[6];
|
|
steps[0] = 0.0;
|
|
steps[1] = 0.1666;
|
|
steps[2] = 0.3332;
|
|
steps[3] = 0.4998;
|
|
steps[4] = 0.6664;
|
|
steps[5] = 0.8330;
|
|
|
|
// Define color values
|
|
vec4 colors[6];
|
|
colors[0] = uParticleColor0 ;
|
|
colors[1] = uParticleColor1 ;
|
|
colors[2] = uParticleColor2 ;
|
|
colors[3] = uParticleColor3 ;
|
|
colors[4] = uParticleColor4 ;
|
|
colors[5] = uParticleColor5 ;
|
|
|
|
// Assign alpha values
|
|
for (int i = 0; i < 6; ++i) {
|
|
colors[i].a = alpha * colors[i].a;
|
|
}
|
|
|
|
// Handle edge cases
|
|
if (v <= steps[0]) {
|
|
return colors[0];
|
|
}
|
|
if (v >= steps[5]) {
|
|
return colors[5];
|
|
}
|
|
|
|
// Find the correct interpolation segment
|
|
for (int i = 0; i < 5; ++i) {
|
|
if (v <= steps[i + 1]) {
|
|
float t = (v - steps[i]) / (steps[i + 1] - steps[i]);
|
|
return mix(colors[i], colors[i + 1], t);
|
|
}
|
|
}
|
|
|
|
// Fallback (should never be reached)
|
|
return vec4(0.0, 0.0, 0.0, 1.0);
|
|
}
|
|
|
|
|
|
vec4 getStarColors(float v, float alpha) {
|
|
// Clamp v to ensure it's in [0.0, 1.0]
|
|
v = clamp(v, 0.0, 1.0);
|
|
|
|
// Define steps for color interpolation
|
|
float steps[6];
|
|
steps[0] = 0.0;
|
|
steps[1] = 0.1666;
|
|
steps[2] = 0.3332;
|
|
steps[3] = 0.4998;
|
|
steps[4] = 0.6664;
|
|
steps[5] = 0.8330;
|
|
|
|
// Define color values
|
|
vec4 colors[6];
|
|
colors[0] = uStarColor0 ;
|
|
colors[1] = uStarColor1 ;
|
|
colors[2] = uStarColor2 ;
|
|
colors[3] = uStarColor3 ;
|
|
colors[4] = uStarColor4 ;
|
|
colors[5] = uStarColor5 ;
|
|
|
|
// Assign alpha values
|
|
for (int i = 0; i < 6; ++i) {
|
|
colors[i].a = alpha * colors[i].a;
|
|
}
|
|
|
|
// Handle edge cases
|
|
if (v <= steps[0]) {
|
|
return colors[0];
|
|
}
|
|
if (v >= steps[5]) {
|
|
return colors[5];
|
|
}
|
|
|
|
// Find the correct interpolation segment
|
|
for (int i = 0; i < 5; ++i) {
|
|
if (v <= steps[i + 1]) {
|
|
float t = (v - steps[i]) / (steps[i + 1] - steps[i]);
|
|
return mix(colors[i], colors[i + 1], t);
|
|
}
|
|
}
|
|
|
|
// Fallback (should never be reached)
|
|
return vec4(0.0, 0.0, 0.0, 1.0);
|
|
}
|
|
|
|
|
|
|
|
|
|
//gets the mask of a Star
|
|
float getStar(vec2 uv, vec2 center, float npoints, float radiusRatio, float size, float rotation)
|
|
{
|
|
|
|
float radiusMax = 1.0;
|
|
float radiusMin = radiusMax * radiusRatio;
|
|
|
|
float starangle = 2.0 * PI / npoints; // Angle between points on the star
|
|
|
|
// Offset rotation to ensure one point is always up when rotation = 0
|
|
rotation += PI / 2.0 - starangle / 1.0;
|
|
|
|
// Define the positions for the outer and inner points of the star's initial angle, rotated by `rotation`
|
|
vec3 p0 = (radiusMax * size) * getPosByAngle(rotation); // Outer point, rotated by `rotation`
|
|
vec3 p1 = (radiusMin * size) * getPosByAngle(starangle + rotation); // Inner point, also rotated
|
|
|
|
// Calculate the position of the current fragment relative to the star's center
|
|
vec2 curPosuv = (uv - center); // Center UV coordinates, then scale to fit the star size
|
|
float curRadius = length(curPosuv); // Radius from center, no need to scale further
|
|
float curPosAngle = atan(curPosuv.y, curPosuv.x) - rotation; // Calculate angle and adjust by `rotation`
|
|
|
|
// Determine the fractional position within the current star segment
|
|
float a = fract(curPosAngle / starangle); // Fractional angle position within one segment
|
|
if (a >= 0.5)
|
|
a = 1.0 - a; // Ensure we are within the first half of the segment (symmetry)
|
|
|
|
// Calculate the current point on the star segment, applying rotation
|
|
a = a * starangle; // Actual angle for this position on the segment
|
|
vec3 curPos = curRadius * getPosByAngle(a + rotation); // Final position, rotated
|
|
|
|
// Calculate directions for edge detection using cross product
|
|
vec3 dir0 = p1 - p0; // Vector from outer to inner point
|
|
vec3 dir1 = curPos - p0; // Vector from outer point to current position
|
|
|
|
// Use cross product to determine if `curPos` is inside the star's edge
|
|
return step(0.0, cross(dir0, dir1).z); // Returns 1.0 if inside, 0.0 if outside (solid edge)
|
|
}
|
|
|
|
|
|
float XYtoAngle(vec2 XY)
|
|
{
|
|
return atan(XY.y, XY.x);
|
|
}
|
|
|
|
|
|
vec4 getStars(float t)
|
|
{
|
|
|
|
//the UV for this function
|
|
float aspect = uSize.x / uSize.y;
|
|
vec2 uv = iTexCoord.st * vec2(aspect,1.0);
|
|
|
|
float result = 0.0;
|
|
|
|
|
|
for (float i = 0.0; i < uStarCount ; ++i)
|
|
{
|
|
|
|
vec4 v4 = hash41( i * uSeed);
|
|
|
|
//the X and Y position ... at the end
|
|
vec3 pos = getPosByAngle( (i/uStarCount) * tau + (uStarRot * tau * t) );
|
|
|
|
//the distance the spark will travel
|
|
float d = mix(0.33,0.34,v4.z) ;
|
|
d = mix(
|
|
uStarStartEnd.x ,
|
|
uStarStartEnd.y ,
|
|
(1.0 - t)
|
|
);
|
|
|
|
|
|
float s = getStar(
|
|
uv,
|
|
vec2(0.5 * aspect,0.5) + ( pos.xy * d ), //position (x, y)
|
|
5.0, //npoints
|
|
0.5, //Ratio
|
|
FadeInOut(t,4.0) * uStarSize,//Size
|
|
PI //rotation
|
|
);
|
|
|
|
result += s;
|
|
|
|
}
|
|
|
|
result *= FadeInOut(iTexCoord.s,8.0);
|
|
result *= FadeInOut(iTexCoord.t,8.0);
|
|
result = clamp(result,0.0,1.0);
|
|
|
|
|
|
vec4 color = getStarColors(
|
|
(XYtoAngle(iTexCoord.st * 2.0 - 1.0) + PI) / tau
|
|
, 1.0);
|
|
|
|
return vec4(color.rgb,result);
|
|
|
|
}
|
|
|
|
|
|
|
|
//gets the particles
|
|
vec4 getParticles(float alpha)
|
|
{
|
|
vec2 uv = iTexCoord.st;
|
|
|
|
float particles = pow((simplex3D(vec3(uv * uParticleSize, uParticleSpeed * uProgress ))), 3.0);
|
|
|
|
float pc = simplex3D(vec3(uv * uParticleColorRandom, uParticleColorSpeed * uProgress ));
|
|
vec4 particleColor = getParticleColors(pc,1.0);
|
|
|
|
particles *= alpha;
|
|
|
|
return vec4(particleColor.rgb,particles);
|
|
}
|
|
|
|
|
|
void main() {
|
|
// Calculate the progression value based on the animation direction.
|
|
// If opening, use uProgress as-is; if closing, invert the progression.
|
|
float progress = uForOpening ? 1.0 - uProgress : uProgress ;
|
|
|
|
//zero to one... mostly one
|
|
float ztomo = remap(
|
|
progress,
|
|
0.0,0.1,
|
|
0.0,1.0
|
|
);
|
|
ztomo = easeInOutSine(ztomo);
|
|
|
|
//progress variants
|
|
// float oExpo = easeOutExpo(progress);
|
|
// float iExpo = easeInExpo(progress);
|
|
float ioSine = easeInOutSine(progress);
|
|
|
|
//get blured version of the window
|
|
vec4 oColor = blur(iTexCoord.st, ztomo * 100.0,uBlurQuality);
|
|
|
|
//apply mask
|
|
oColor.a *= getMask(1.0 - ioSine);
|
|
|
|
//get and apply particles
|
|
if (uParticles)
|
|
{
|
|
vec4 particles = getParticles(oColor.a);
|
|
oColor = mix(oColor,particles,ztomo);
|
|
}
|
|
|
|
//get and apply sparks
|
|
if (uSparkCount > 0)
|
|
{
|
|
float sparks = getSparks(progress);
|
|
oColor = alphaOver(oColor, vec4(1.0,1.0,1.0,sparks));
|
|
}
|
|
|
|
//get and apply stars
|
|
if (uStarCount > 0 )
|
|
{
|
|
oColor = alphaOver(oColor, getStars(mix(0.0001,0.999,progress)));
|
|
}
|
|
|
|
setOutputColor(oColor);
|
|
} |