Water is in ECS; water material is created in code

water/depth.vert

@@ -0,0 +1,20 @@
+OGRE_NATIVE_GLSL_VERSION_DIRECTIVE
+#include <OgreUnifiedShader.h>
+
+OGRE_UNIFORMS(
+     uniform mat4 world;
+     uniform mat4 worldViewProj;
+)
+
+MAIN_PARAMETERS
+IN(vec4 vertex, POSITION);
+OUT(vec4 vposition, POSITION);
+OUT(vec3 positionWS, TEXCOORD0);
+
+MAIN_DECLARATION
+{
+	vposition = mul(worldViewProj, vertex);
+	positionWS = mul(world, vertex).xyz;
+	gl_Position = vposition;
+}
+