1 files changed, 27 insertions, 0 deletions
diff --git a/advanced_lighting/4.normal_mapping/shaders/depth.gs b/advanced_lighting/4.normal_mapping/shaders/depth.gs
new file mode 100644
index 0000000..638e2b9
--- /dev/null
+++ b/advanced_lighting/4.normal_mapping/shaders/depth.gs
@@ -0,0 +1,27 @@
+#version 330 core
+layout(triangles) in;
+layout(triangle_strip, max_vertices=18) out;
+
+uniform mat4 shadow_transforms[6];
+
+out vec4 frag_pos;
+
+void
+main(void)
+{
+    for (int face = 0;
+         face < 6;
+         ++face)
+    {
+        gl_Layer = face;
+        for (int vertex = 0;
+             vertex < 3;
+             ++vertex)
+        {
+            frag_pos = gl_in[vertex].gl_Position;
+            gl_Position = shadow_transforms[face]*frag_pos;
+            EmitVertex();
+        }
+        EndPrimitive();
+    }
+}