Adjust clipping planes

Fixes #1183

shaders/glsl/offscreen/phong.vert

@@ -26,6 +26,6 @@ void main()
 	outLightVec = normalize(ubo.lightPos.xyz - outEyePos);
 
 	// Clip against reflection plane
-	vec4 clipPlane = vec4(0.0, -1.0, 0.0, 1.5);	
+	vec4 clipPlane = vec4(0.0, -1.0, 0.0, 0.0);	
 	gl_ClipDistance[0] = dot(vec4(inPos, 1.0), clipPlane);	
 }

shaders/hlsl/offscreen/phong.vert

@@ -37,7 +37,7 @@ VSOutput main(VSInput input)
 	output.LightVec = normalize(ubo.lightPos.xyz - output.EyePos);
 
 	// Clip against reflection plane
-	float4 clipPlane = float4(0.0, -1.0, 0.0, 1.5);
+	float4 clipPlane = float4(0.0, -1.0, 0.0, 0.0);
 	output.ClipDistance = dot(input.Pos, clipPlane);
 	return output;
 }