diff --git a/Renderer/Renderer.cpp b/Renderer/Renderer.cpp
index d1790e9..bc8a47a 100644
--- a/Renderer/Renderer.cpp
+++ b/Renderer/Renderer.cpp
@@ -346,6 +346,7 @@ void Renderer::draw() {
 		.proj = p,
 		.time = time,
 		.cam_pos = cam.pos,
+		.cam_dir = cam.dir(),
 		.viewport = glm::vec2(viewport.width, viewport.y),
 		.tess_factor = tess_factor,
 		.tess_edge_size = tess_edge_size,
diff --git a/Renderer/UniformBuffer.hpp b/Renderer/UniformBuffer.hpp
index 851df66..c20ef40 100644
--- a/Renderer/UniformBuffer.hpp
+++ b/Renderer/UniformBuffer.hpp
@@ -9,6 +9,22 @@
 
 #include <memory>
 
+/* Uniform:
+ * 
+ * layout (set = 0, binding = 0) uniform Matrices {
+ *		mat4 view;
+ *		mat4 proj;
+ *		float time;
+ *		vec3 cam_pos;
+ *		vec3 cam_dir;
+ *		vec4 frustum[6];
+ *		vec2 viewport;
+ *		float tess_factor;
+ *		float tess_edge_size;
+ *	};
+ * 
+ */
+
 struct UniformData {
 	glm::mat4 view;
 	glm::mat4 proj;
@@ -18,6 +34,8 @@ struct UniformData {
 	float pad2;
 	glm::vec3 cam_pos;
 	float pad3;
+	glm::vec3 cam_dir;
+	float pad4;
 	glm::vec4 frustum[6];
 	glm::vec2 viewport;
 	float tess_factor;
diff --git a/Scene/Camera.hpp b/Scene/Camera.hpp
index bb8a310..15b2f54 100644
--- a/Scene/Camera.hpp
+++ b/Scene/Camera.hpp
@@ -14,7 +14,12 @@ struct Camera {
 	
 	glm::vec3 pos = glm::vec3(0.0f);
 
-	inline glm::mat4 view() {
-		return glm::lookAt(pos, pos+glm::vec3(sin(theta) * cos(phi), cos(theta), sin(theta) * sin(phi)), glm::vec3(0.0, 1.0, 0.0));
+	inline glm::vec3 dir() {
+		return glm::vec3(sin(theta) * cos(phi), cos(theta), sin(theta) * sin(phi));
 	}
+
+	inline glm::mat4 view() {
+		return glm::lookAt(pos, pos+dir(), glm::vec3(0.0, 1.0, 0.0));
+	}
+
 };
\ No newline at end of file
diff --git a/assets/shaders/gooch.frag b/assets/shaders/gooch.frag
index a60982a..51bd1f1 100644
--- a/assets/shaders/gooch.frag
+++ b/assets/shaders/gooch.frag
@@ -10,6 +10,7 @@ layout (set = 0, binding = 0) uniform Matrices {
 	mat4 proj;
 	float time;
 	vec3 cam_pos;
+	vec3 cam_dir;
 	vec4 frustum[6];
 	vec2 viewport;
 	float tess_factor;
diff --git a/assets/shaders/gooch.frag.spv b/assets/shaders/gooch.frag.spv
index 92ef58f..5d08070 100644
Binary files a/assets/shaders/gooch.frag.spv and b/assets/shaders/gooch.frag.spv differ
diff --git a/assets/shaders/lambert.frag b/assets/shaders/lambert.frag
index 2ed7c73..65d306f 100644
--- a/assets/shaders/lambert.frag
+++ b/assets/shaders/lambert.frag
@@ -6,9 +6,15 @@ layout (location = 2) in vec3 pos;
 layout (location = 0) out vec4 FragColor;
 
 layout (set = 0, binding = 0) uniform Matrices {
-	mat4 mvp;
+	mat4 view;
+	mat4 proj;
 	float time;
 	vec3 cam_pos;
+	vec3 cam_dir;
+	vec4 frustum[6];
+	vec2 viewport;
+	float tess_factor;
+	float tess_edge_size;
 };
 
 layout (set = 0, binding = 1) uniform sampler2D tex;     
diff --git a/assets/shaders/lambert.frag.spv b/assets/shaders/lambert.frag.spv
index fde53ba..db02c02 100644
Binary files a/assets/shaders/lambert.frag.spv and b/assets/shaders/lambert.frag.spv differ
diff --git a/assets/shaders/terrain.frag b/assets/shaders/terrain.frag
index 5998114..105a75d 100644
--- a/assets/shaders/terrain.frag
+++ b/assets/shaders/terrain.frag
@@ -10,6 +10,7 @@ layout (set = 0, binding = 0) uniform Matrices {
 	mat4 proj;
 	float time;
 	vec3 cam_pos;
+	vec3 cam_dir;
 	vec4 frustum[6];
 	vec2 viewport;
 	float tess_factor;
@@ -19,8 +20,8 @@ layout (set = 0, binding = 0) uniform Matrices {
 layout (set = 0, binding = 1) uniform sampler2D heightmap;
 
 void main() {
-	//vec3 light_pos = vec3(10.0*cos(time), 10.0, 0.0);
-	vec3 L = normalize(cam_pos-pos);
+	/* extract L (light direction) from view matrix */
+	vec3 L = -cam_dir;
 	float r = length(cam_pos-pos);
 	float t = clamp(dot(L, norm), 0.0, 1.0) * 20.0/(r*r);
 
diff --git a/assets/shaders/terrain.frag.spv b/assets/shaders/terrain.frag.spv
index e8baa62..86a0808 100644
Binary files a/assets/shaders/terrain.frag.spv and b/assets/shaders/terrain.frag.spv differ
diff --git a/assets/shaders/terrain.tesc b/assets/shaders/terrain.tesc
index fc7a229..0d63ac0 100644
--- a/assets/shaders/terrain.tesc
+++ b/assets/shaders/terrain.tesc
@@ -6,6 +6,7 @@ layout (set = 0, binding = 0) uniform Matrices {
 	mat4 proj;
 	float time;
 	vec3 cam_pos;
+	vec3 cam_dir;
 	vec4 frustum[6];
 	vec2 viewport;
 	float tess_factor;
diff --git a/assets/shaders/terrain.tesc.spv b/assets/shaders/terrain.tesc.spv
index 720e58b..488d37a 100644
Binary files a/assets/shaders/terrain.tesc.spv and b/assets/shaders/terrain.tesc.spv differ
diff --git a/assets/shaders/terrain.tese b/assets/shaders/terrain.tese
index dc0f379..cda3c84 100644
--- a/assets/shaders/terrain.tese
+++ b/assets/shaders/terrain.tese
@@ -5,6 +5,7 @@ layout (set = 0, binding = 0) uniform Matrices {
 	mat4 proj;
 	float time;
 	vec3 cam_pos;
+	vec3 cam_dir;
 	vec4 frustum[6];
 	vec2 viewport;
 	float tess_factor;
diff --git a/assets/shaders/terrain.tese.spv b/assets/shaders/terrain.tese.spv
index c92bf8b..3dca697 100644
Binary files a/assets/shaders/terrain.tese.spv and b/assets/shaders/terrain.tese.spv differ