Fix SHADOWS_DISABLED flag in GLES2

Signed-off-by: Guilherme Souza <[email protected]>
(cherry picked from commit b363125568690d85290c607d7661dacd6cbfb3a0)

drivers/gles2/shaders/scene.glsl

@@ -1693,6 +1693,8 @@ FRAGMENT_SHADER_CODE
 
 #endif
 
+#if !defined(SHADOWS_DISABLED)
+
 #ifdef USE_SHADOW
 	{
 		highp vec4 splane = shadow_coord;
@@ -1723,6 +1725,8 @@ FRAGMENT_SHADER_CODE
 	}
 #endif
 
+#endif //SHADOWS_DISABLED
+
 #endif //type omni
 
 #ifdef LIGHT_MODE_DIRECTIONAL
@@ -1733,6 +1737,8 @@ FRAGMENT_SHADER_CODE
 #endif
 	float depth_z = -vertex.z;
 
+#if !defined(SHADOWS_DISABLED)
+
 #ifdef USE_SHADOW
 
 #ifdef USE_VERTEX_LIGHTING
@@ -1951,6 +1957,8 @@ FRAGMENT_SHADER_CODE
 
 #endif //use shadow
 
+#endif // SHADOWS_DISABLED
+
 #endif
 
 #ifdef LIGHT_MODE_SPOT
@@ -1987,6 +1995,8 @@ FRAGMENT_SHADER_CODE
 
 #endif
 
+#if !defined(SHADOWS_DISABLED)
+
 #ifdef USE_SHADOW
 	{
 		highp vec4 splane = shadow_coord;
@@ -1996,6 +2006,8 @@ FRAGMENT_SHADER_CODE
 	}
 #endif
 
+#endif // SHADOWS_DISABLED
+
 #endif // LIGHT_MODE_SPOT
 
 #ifdef USE_VERTEX_LIGHTING