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shaders: support changing the outer radius of borders independently

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Vaxry
2023-10-19 14:04:50 +01:00
parent d70cc88dab
commit 6e15590e98
4 changed files with 21 additions and 8 deletions
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22
src/render/shaders/Border.hpp
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@@ -12,6 +12,7 @@ uniform vec2 topLeft;
uniform vec2 fullSize;
uniform vec2 fullSizeUntransformed;
uniform float radius;
uniform float radiusOuter;
uniform float thick;
uniform vec4 gradient[10];
@@ -51,6 +52,7 @@ vec4 getColorForCoord(vec2 normalizedCoord) {
void main() {
highp vec2 pixCoord = vec2(gl_FragCoord);
highp vec2 pixCoordOuter = pixCoord;
highp vec2 originalPixCoord = v_texcoord;
originalPixCoord *= fullSizeUntransformed;
float additionalAlpha = 1.0;
@@ -61,25 +63,33 @@ void main() {
pixCoord -= topLeft + fullSize * 0.5;
pixCoord *= vec2(lessThan(pixCoord, vec2(0.0))) * -2.0 + 1.0;
pixCoordOuter = pixCoord;
pixCoord -= fullSize * 0.5 - radius;
pixCoord += vec2(1.0, 1.0) / fullSize; // center the pix dont make it top-left
pixCoordOuter -= fullSize * 0.5 - radiusOuter;
// center the pixes dont 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 = length(pixCoord);
float distOuter = length(pixCoordOuter);
float h = (thick / 2.0);
if (dist < radius - h) {
// lower
float normalized = smoothstep(0.0, 1.0, dist - radius + thick + 0.5);
additionalAlpha *= normalized;
} else {
done = true;
} else if (min(pixCoordOuter.x, pixCoordOuter.y) > 0.0) {
// higher
float normalized = 1.0 - smoothstep(0.0, 1.0, dist - radius + 0.5);
float normalized = 1.0 - smoothstep(0.0, 1.0, distOuter - radiusOuter + 0.5);
additionalAlpha *= normalized;
done = true;
} else if (distOuter < radiusOuter - h) {
additionalAlpha = 1.0;
done = true;
}
done = true;
}
// now check for other shit