work

shaders/mat_stars.frag

@@ -0,0 +1,17 @@
+#version 330
+
+#include <common>
+
+in vec3 f_normal;
+
+void main()
+{
+	float x = (gl_PointCoord.x - 0.5f) * 2.0f;
+	float y = (gl_PointCoord.y - 0.5f) * 2.0f;
+	float dist2 = abs(x * x + y * y);
+	if (dist2 > 0.5f * 0.5f)
+		discard;
+
+	// color data is shared with normals, ugh
+	gl_FragColor = vec4(f_normal, 1.0f);
+}