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