Joshua Leung
440bce242d
* Outlines of keyframes were too thick and ugly * Size differences between keyframe types was being swallowed by the pixel-fudge factor, leaving colour as the only distinguishing factor (bad!)
35 lines
817 B
GLSL
35 lines
817 B
GLSL
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uniform mat4 ModelViewProjectionMatrix;
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const float pixel_fudge = sqrt(2.0);
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const float outline_width = 1.15 * pixel_fudge;
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in vec2 pos;
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in float size;
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in vec4 color;
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in vec4 outlineColor;
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out vec4 finalColor;
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out vec4 finalOutlineColor;
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out vec4 radii;
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void main() {
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gl_Position = ModelViewProjectionMatrix * vec4(pos, 0.0, 1.0);
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// pass through unchanged
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gl_PointSize = size + pixel_fudge; // 0.5 pixel_fudge on either side
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finalColor = color;
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finalOutlineColor = outlineColor;
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// calculate concentric radii in pixels
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float radius = 0.5 * gl_PointSize;
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// start at the outside and progress toward the center
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radii[0] = radius;
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radii[1] = radius - pixel_fudge;
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radii[2] = radius - outline_width;
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radii[3] = radius - outline_width - pixel_fudge;
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// convert to PointCoord units
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radii /= size;
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}
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