From 2bb276d4ed15277cb0172353250fd7e92bf12840 Mon Sep 17 00:00:00 2001
From: Martin Michalec <martin@michalec.dev>
Date: Wed, 11 Feb 2026 07:50:35 +0300
Subject: add resources

---
 res/shaders/glsl330/line.fs | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 res/shaders/glsl330/line.fs

(limited to 'res/shaders/glsl330/line.fs')

diff --git a/res/shaders/glsl330/line.fs b/res/shaders/glsl330/line.fs
new file mode 100644
index 0000000..d7a8d48
--- /dev/null
+++ b/res/shaders/glsl330/line.fs
@@ -0,0 +1,27 @@
+#version 330 core
+
+uniform float time;
+uniform vec2 resolution;
+uniform vec2 mouse;
+
+out vec4 color;
+
+float
+plot (vec2 st)
+{
+  return smoothstep (0.01, 0.0, abs (st.y - st.x));
+}
+
+void
+main () {
+  vec2 st = gl_FragCoord.xy/resolution;
+
+  float y = st.x;
+
+  vec3 c = vec3 (y);
+
+  float pct = plot (st);
+  c = (1.0 - pct)*c + pct*vec3 (0.0, 1.0, 0.0);
+
+  color = vec4 (c, 1.0);
+}
-- 
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