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-rw-r--r--gfx/gl/shaders/materialOut.glsl5
1 files changed, 5 insertions, 0 deletions
diff --git a/gfx/gl/shaders/materialOut.glsl b/gfx/gl/shaders/materialOut.glsl
index dc5f8e8..928edf0 100644
--- a/gfx/gl/shaders/materialOut.glsl
+++ b/gfx/gl/shaders/materialOut.glsl
@@ -1,3 +1,8 @@
+#ifndef MATERIAL_OUT_INCLUDED
+#define MATERIAL_OUT_INCLUDED
+
layout(location = 0) out vec4 gPosition;
layout(location = 1) out vec4 gNormal;
layout(location = 2) out vec4 gAlbedoSpec;
+
+#endif