1 files changed, 45 insertions, 0 deletions
diff --git a/gfx/gl/shaders/networkCurve.tese b/gfx/gl/shaders/networkCurve.tese
new file mode 100644
index 0000000..9cc31e2
--- /dev/null
+++ b/gfx/gl/shaders/networkCurve.tese
@@ -0,0 +1,45 @@
+#version 460 core
+
+layout(isolines, equal_spacing, cw) in;
+
+flat in ivec3 c_pos[][2];
+flat in ivec2 c_cpos[];
+flat in float c_reps[];
+flat in float c_angles[][2];
+flat in float c_radius[];
+
+flat out ivec3 pos;
+flat out mat2 rot;
+flat out float tpos;
+flat out float dist;
+
+const float startTolerance = 1. / 200.;
+const float endTolerance = 1. - startTolerance;
+
+include(`networkCommon.glsl')
+
+mat2
+getRot(float angle)
+{
+	return mat2(cos(angle), sin(angle), -sin(angle), cos(angle));
+}
+
+void
+main()
+{
+	const float angle = mix(c_angles[0][1], c_angles[0][0], gl_TessCoord.x);
+	rot = getRot(angle);
+	if (gl_TessCoord.x < startTolerance) {
+		pos = c_pos[0][1];
+	}
+	else if (gl_TessCoord.x > endTolerance) {
+		pos = c_pos[0][0];
+	}
+	else {
+		const int height = int(mix(c_pos[0][1].z, c_pos[0][0].z, gl_TessCoord.x));
+		pos = ivec3(c_cpos[0] + ivec2(rot * vec2(c_radius[0], 0)), height);
+	}
+
+	tpos = c_reps[0] * gl_TessCoord.x;
+	dist = viewPointDist(pos);
+}