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#version 300 es
#extension GL_ARB_shading_language_include : enable
precision highp float;
in vec2 v_texcoord;
uniform int sourceTF; // eTransferFunction
uniform int targetTF; // eTransferFunction
uniform mat4x2 targetPrimaries;
uniform vec2 fullSizeUntransformed;
uniform float radiusOuter;
uniform float thick;
// Gradients are in OkLabA!!!! {l, a, b, alpha}
uniform vec4 gradient[10];
uniform vec4 gradient2[10];
uniform int gradientLength;
uniform int gradient2Length;
uniform float angle;
uniform float angle2;
uniform float gradientLerp;
uniform float alpha;
#include "rounding.glsl"
#include "CM.glsl"
#include "border.glsl"
layout(location = 0) out vec4 fragColor;
void main() {
highp vec2 pixCoord = vec2(gl_FragCoord);
highp vec2 pixCoordOuter = pixCoord;
highp vec2 originalPixCoord = v_texcoord;
originalPixCoord *= fullSizeUntransformed;
float additionalAlpha = 1.0;
vec4 pixColor = vec4(1.0, 1.0, 1.0, 1.0);
bool done = false;
pixCoord -= topLeft + fullSize * 0.5;
pixCoord *= vec2(lessThan(pixCoord, vec2(0.0))) * -2.0 + 1.0;
pixCoordOuter = pixCoord;
pixCoord -= fullSize * 0.5 - radius;
pixCoordOuter -= fullSize * 0.5 - radiusOuter;
// center the pixes don't make it top-left
pixCoord += vec2(1.0, 1.0) / fullSize;
pixCoordOuter += vec2(1.0, 1.0) / fullSize;
if (min(pixCoord.x, pixCoord.y) > 0.0 && radius > 0.0) {
float dist = pow(pow(pixCoord.x,roundingPower)+pow(pixCoord.y,roundingPower),1.0/roundingPower);
float distOuter = pow(pow(pixCoordOuter.x,roundingPower)+pow(pixCoordOuter.y,roundingPower),1.0/roundingPower);
float h = (thick / 2.0);
if (dist < radius - h) {
// lower
float normalized = smoothstep(0.0, 1.0, (dist - radius + thick + SMOOTHING_CONSTANT) / (SMOOTHING_CONSTANT * 2.0));
additionalAlpha *= normalized;
done = true;
} else if (min(pixCoordOuter.x, pixCoordOuter.y) > 0.0) {
// higher
float normalized = 1.0 - smoothstep(0.0, 1.0, (distOuter - radiusOuter + SMOOTHING_CONSTANT) / (SMOOTHING_CONSTANT * 2.0));
additionalAlpha *= normalized;
done = true;
} else if (distOuter < radiusOuter - h) {
additionalAlpha = 1.0;
done = true;
}
}
// now check for other shit
if (!done) {
// distance to all straight bb borders
float distanceT = originalPixCoord[1];
float distanceB = fullSizeUntransformed[1] - originalPixCoord[1];
float distanceL = originalPixCoord[0];
float distanceR = fullSizeUntransformed[0] - originalPixCoord[0];
// get the smallest
float smallest = min(min(distanceT, distanceB), min(distanceL, distanceR));
if (smallest > thick)
discard;
}
if (additionalAlpha == 0.0)
discard;
pixColor = getColorForCoord(v_texcoord);
pixColor.rgb *= pixColor[3];
pixColor = doColorManagement(pixColor, sourceTF, targetTF, targetPrimaries);
pixColor *= alpha * additionalAlpha;
fragColor = pixColor;
}
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