Improve shading

org.niclasundharald.engine/graphics/GlobalDefaults.cs

@@ -67,6 +67,7 @@ uniform mat4 mScene;
 out vec4 color;
 out vec3 norm;
 out vec2 uv;
+out vec3 coord;
 
 out float	shading;
 
@@ -86,14 +87,9 @@ void main()
 	float	sight = clamp( idist * idist * idist, 0.1, 1.0);
 			//sight = 1;
 
-	if (norm.z > 0){
-			fading = 0;
-	} else {
-
-	};
-
 			shading = clamp(0.3 + (cosTheta * 0.7), 0.1, 0.9);
 			color = clamp( vec4( iv_color.xyz * shading * sight, fading ), 0, 1);
+			coord	= camray;
 }
 
 ";
@@ -103,6 +99,7 @@ private string defFragmentShaderSource = @"#version 330
 in vec4 color;
 in vec3 norm;
 in vec2 uv;
+in vec3 coord;
 
 in float shading;
 
@@ -110,6 +107,12 @@ out vec4 _color;
 
 void main()
 {
+	float cosTheta = dot( -coord, norm );
+	
+	if (cosTheta >= 0){
+		discard;
+	};
+
     _color = color;
 }