diff --git a/src/gfx/renderer.cpp b/src/gfx/renderer.cpp
index 5a99d64..36974d6 100644
--- a/src/gfx/renderer.cpp
+++ b/src/gfx/renderer.cpp
@@ -240,19 +240,20 @@ bool gfx::Renderer::ComputePortalScreenAABB(const game::Portal& portal, const gl
 {
 	size_t num_behind = 0;
 
+	glm::vec4 clip[4];
 	for (size_t i = 0; i < 4; ++i)
 	{
 		glm::vec4 vert = glm::vec4(portal.verts[i], 1.0f);
-		glm::vec4 clip = view_proj * vert;
+		clip[i] = view_proj * vert;
 		
-		if (clip.w <= 0.0f)
+		if (clip[i].w <= 0.0f)
 		{
 			num_behind++;
 			continue; // Skip vertices behind the camera
 		}
 		
-		glm::vec2 ndc = clip;
-		ndc /= clip.w;
+		glm::vec2 ndc = clip[i];
+		ndc /= clip[i].w;
 
 		aabb.AddPoint(ndc);
 	}
@@ -262,10 +263,73 @@ bool gfx::Renderer::ComputePortalScreenAABB(const game::Portal& portal, const gl
 		return false; // All vertices are behind the camera, no visible portal
 	}
 
-	if (num_behind > 0)
+	if (num_behind == 0)
 	{
-		// Some vertices are behind the camera, cannot use the AABB
-		aabb = collision::AABB2(glm::vec2(-1.0f), glm::vec2(1.0f)); // Full screen AABB
+		return true;
+	}
+
+
+	aabb = collision::AABB2(glm::vec2(-1.0f), glm::vec2(1.0f)); // Full screen AABB
+
+	// Check if all vertices are behind any clipping plane
+	size_t num_behind_plane = 0;
+	
+	for (size_t i = 0; i < 4; ++i)
+	{
+		if (clip[i].x < -clip[i].w)
+		{
+			num_behind_plane++;
+		}
+	}
+
+	if (num_behind_plane == 4)
+	{
+		return false; // All vertices are behind the clipping plane, no visible portal
+	}
+
+	num_behind_plane = 0;
+
+	for (size_t i = 0; i < 4; ++i)
+	{
+		if (clip[i].x > clip[i].w)
+		{
+			num_behind_plane++;
+		}
+	}
+
+	if (num_behind_plane == 4)
+	{
+		return false; // All vertices are in front of the clipping plane, no visible portal
+	}
+
+	num_behind_plane = 0;
+
+	for (size_t i = 0; i < 4; ++i)
+	{
+		if (clip[i].y < -clip[i].w)
+		{
+			num_behind_plane++;
+		}
+	}
+
+	if (num_behind_plane == 4)
+	{
+		return false; // All vertices are below the clipping plane, no visible portal
+	}
+
+	num_behind_plane = 0;
+
+	for (size_t i = 0; i < 4; ++i)
+	{
+		if (clip[i].y > clip[i].w)
+		{
+			num_behind_plane++;
+		}
+	}
+
+	if (num_behind_plane == 4)
+	{
+		return false; // All vertices are above the clipping plane, no visible portal
 	}
 
 	return true;