Update

resources/main/ShadowExtrudePointLight.vert

@@ -0,0 +1,19 @@
+#include <OgreUnifiedShader.h>
+
+// Point light shadow volume extrude
+uniform mat4 worldviewproj_matrix;
+uniform vec4 light_position_object_space; // homogenous, object space
+
+MAIN_PARAMETERS
+IN(vec4 uv0, TEXCOORD0)
+IN(vec4 position, POSITION)
+MAIN_DECLARATION
+{
+    // Extrusion in object space
+    // Vertex unmodified if w==1, extruded if w==0
+    vec4 newpos =
+        (uv0.xxxx * light_position_object_space) +
+        vec4(position.xyz - light_position_object_space.xyz, 0.0);
+
+    gl_Position = mul(worldviewproj_matrix, newpos);
+}