work

shaders/billboard.frag

@@ -0,0 +1,14 @@
+#version 330
+
+in vec3 f_normal;
+in vec2 f_coord;
+
+uniform sampler2D tex1;
+
+#include <common>
+
+void main()
+{
+	vec4 tex_color = texture(tex1, f_coord);
+	gl_FragColor = tex_color * param[0];
+}