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borders are now gangsta

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This commit is contained in:
vaxerski
2022-05-17 13:16:37 +02:00
parent 48b8ab3f65
commit cad71218c0
8 changed files with 129 additions and 139 deletions
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47
src/render/Shaders.hpp
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@@ -21,8 +21,53 @@ precision mediump float;
varying vec4 v_color;
varying vec2 v_texcoord;
uniform vec2 topLeft;
uniform vec2 bottomRight;
uniform vec2 fullSize;
uniform float radius;
void main() {
gl_FragColor = v_color;
if (radius == 0.0) {
gl_FragColor = v_color;
return;
}
vec2 pixCoord = fullSize * v_texcoord;
if (pixCoord[0] < topLeft[0]) {
// we're close left
if (pixCoord[1] < topLeft[1]) {
// top
if (distance(topLeft, pixCoord) > radius) {
discard;
return;
}
} else if (pixCoord[1] > bottomRight[1]) {
// bottom
if (distance(vec2(topLeft[0], bottomRight[1]), pixCoord) > radius) {
discard;
return;
}
}
}
else if (pixCoord[0] > bottomRight[0]) {
// we're close right
if (pixCoord[1] < topLeft[1]) {
// top
if (distance(vec2(bottomRight[0], topLeft[1]), pixCoord) > radius) {
discard;
return;
}
} else if (pixCoord[1] > bottomRight[1]) {
// bottom
if (distance(bottomRight, pixCoord) > radius) {
discard;
return;
}
}
}
gl_FragColor = v_color;
})#";
inline const std::string TEXVERTSRC = R"#(