From b3f0df24c98dc6a7a341271dd85451345f2be1a7 Mon Sep 17 00:00:00 2001 From: Dan Goodliffe Date: Sat, 31 Jan 2026 01:49:07 +0000 Subject: Initial commit using tesselation shader to create curves Disables glslangValidator because of file extension mess up. --- gfx/gl/shaders/networkCurve.tes | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 gfx/gl/shaders/networkCurve.tes (limited to 'gfx/gl/shaders/networkCurve.tes') diff --git a/gfx/gl/shaders/networkCurve.tes b/gfx/gl/shaders/networkCurve.tes new file mode 100644 index 0000000..a02503c --- /dev/null +++ b/gfx/gl/shaders/networkCurve.tes @@ -0,0 +1,30 @@ +#version 460 core +layout(isolines, equal_spacing, cw) in; + +flat in ivec3 c_apos[]; +flat in ivec3 c_bpos[]; +flat in ivec3 c_cpos[]; +flat in float c_reps[]; +flat in float c_aangle[]; +flat in float c_bangle[]; +flat in float c_radius[]; + +flat out ivec3 pos; +flat out mat2 rot; +flat out float tpos; + +mat2 +getRot(float angle) +{ + return mat2(cos(angle), sin(angle), -sin(angle), cos(angle)); +} + +void +main() +{ + float angle = mix(c_bangle[0], c_aangle[0], gl_TessCoord.x); + int height = int(mix(c_bpos[0].z, c_apos[0].z, gl_TessCoord.x)) - c_cpos[0].z; + rot = getRot(angle); + tpos = c_reps[0] * gl_TessCoord.x; + pos = c_cpos[0] + ivec3(rot * vec2(c_radius[0], 0), height); +} -- cgit v1.2.3