Some clean up, web version prepare

resources/shaders/night_fog_shadow_web.vertex

@@ -0,0 +1,27 @@
+attribute vec3 vPosition;
+attribute vec2 vTexCoord;
+attribute vec3 vNormal;
+
+varying vec2 texCoord;
+varying vec4 fragPosLightSpace;
+varying vec3 fragNormal;
+varying float fogDistance;
+varying vec3 fragViewPos;
+varying vec2 fragWorldXZ;
+
+uniform mat4 ProjectionModelViewMatrix;
+uniform mat4 ModelViewMatrix;
+uniform mat4 uLightFromCamera;
+uniform vec3 uPlayerEyePos;
+
+void main()
+{
+	vec4 eyePos = ModelViewMatrix * vec4(vPosition, 1.0);
+	fogDistance = length(eyePos.xyz - uPlayerEyePos);
+	gl_Position = ProjectionModelViewMatrix * vec4(vPosition, 1.0);
+	texCoord = vTexCoord;
+	fragViewPos = eyePos.xyz;
+	fragNormal = mat3(ModelViewMatrix) * vNormal;
+	fragPosLightSpace = uLightFromCamera * eyePos;
+	fragWorldXZ = vPosition.xz;
+}