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#version 420 core
#include "clip.vert.glsl"
layout(location = 0) in vec4 inOutline;
layout(location = 1) in vec4 inOutlineCornerWidths;
layout(location = 2) in vec4 inOutlineCornerHeights;
layout(location = 3) in vec4 inColor;
layout(location = 4) in vec2 inOffset;
layout(location = 5) in float inSpread;
layout(location = 6) in float inBlurRadius;
layout(location = 0) out vec2 outPos;
layout(location = 1) out flat vec4 outOutline;
layout(location = 2) out flat vec4 outOutlineCornerWidths;
layout(location = 3) out flat vec4 outOutlineCornerHeights;
layout(location = 4) out flat vec4 outColor;
layout(location = 5) out flat vec2 outOffset;
layout(location = 6) out flat float outSpread;
layout(location = 7) out flat float outBlurRadius;
vec2 offsets[6] = { vec2(0.0, 0.0),
vec2(1.0, 0.0),
vec2(0.0, 1.0),
vec2(0.0, 1.0),
vec2(1.0, 0.0),
vec2(1.0, 1.0) };
float radius_pixels(float radius) {
return radius * (3.0 * sqrt(2 * 3.141592653589793) / 4) * 1.5;
}
void main() {
vec4 rect = inOutline;
float spread = inSpread + radius_pixels(inBlurRadius);
rect += vec4(inOffset - spread, vec2(2 * spread));
clip (inOutline);
vec2 pos = rect.xy + rect.zw * offsets[gl_VertexIndex];
gl_Position = push.mvp * vec4 (pos, 0.0, 1.0);
outPos = pos;
outOutline = inOutline;
outOutlineCornerWidths = inOutlineCornerWidths;
outOutlineCornerHeights = inOutlineCornerHeights;
outColor = inColor;
outOffset = inOffset;
outSpread = inSpread;
outBlurRadius = inBlurRadius;
}
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