From 1d77f1ca38f88b79a39b418fe3dc7899887d186a Mon Sep 17 00:00:00 2001 From: Dan Goodliffe Date: Sat, 31 Jan 2026 12:02:06 +0000 Subject: Tidy networkCurve shaders Arrays for start/end position/angle, smaller centre position, dynamic segment count based on max error, calculate distance in tessellation evaluation, use start/end position directly to avoid rounding errors at joins. See https://schneide.blog/2025/05/21/calculating-the-number-of-segments-for-accurate-circle-rendering/ --- gfx/gl/shaders/networkCurve.geom | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'gfx/gl/shaders/networkCurve.geom') diff --git a/gfx/gl/shaders/networkCurve.geom b/gfx/gl/shaders/networkCurve.geom index 1002fd4..4a5b3db 100644 --- a/gfx/gl/shaders/networkCurve.geom +++ b/gfx/gl/shaders/networkCurve.geom @@ -1,15 +1,17 @@ #version 460 core +layout(lines) in; +layout(triangle_strip, max_vertices = 10) out; + flat in ivec3 pos[]; flat in mat2 rot[]; flat in float tpos[]; +flat in float dist[]; -layout(lines) in; -layout(triangle_strip, max_vertices = 10) out; include(`networkCommon.glsl') void main() { - doSeg(segDist(pos[0], pos[1]), pos[0], pos[1], tpos[0], tpos[1], rot[0], rot[1]); + doSeg(min(dist[0], dist[1]), pos[0], pos[1], tpos[0], tpos[1], rot[0], rot[1]); } -- cgit v1.2.3