CMake refactor, fix warnings

data/shaders/directionalShadowDepth.frag

@@ -1,7 +0,0 @@
-#version 330 core
-
-void main() {
-    
-    // Empty as we aren't rendering to any color buffer
-
-}

data/shaders/directionalShadowDepth.vert

@@ -1,11 +0,0 @@
-#version 330 core
-
-layout(location = 0) in vec3 a_position;
-
-uniform mat4 u_modelViewProjMatrix;
-
-void main() {
-
-    gl_Position = u_modelViewProjMatrix * vec4(a_position, 1.0f);
-
-}

data/shaders/pointShadowDepth.frag

@@ -1,17 +0,0 @@
-#version 330 core
-in vec4 v_fragmentPosition;
-
-uniform vec3 v_lightPos;
-uniform float pointShadowDepthMapFarPlane;
-
-void main() {
-
-    // Distance between fragment and light source
-    float lightDistance = length(v_fragmentPosition.xyz - v_lightPos);
-    
-    // map to [0;1] range
-    lightDistance = lightDistance / pointShadowDepthMapFarPlane;
-    
-    gl_FragDepth = lightDistance;
-
-} 

data/shaders/pointShadowDepth.geom

@@ -1,25 +0,0 @@
-#version 330 core
-layout (triangles) in;
-layout (triangle_strip, max_vertices=18) out;
-
-uniform mat4 u_shadowMatrices[6];
-
-out vec4 v_fragmentPosition;
-
-void main() {
-
-    for(int face = 0; face < 6; face++) {
-
-        gl_Layer = face;
-        for(int i = 0; i < 3; i++) {
-
-            v_fragmentPosition = gl_in[i].gl_Position;
-            gl_Position = u_shadowMatrices[face] * v_fragmentPosition;
-            EmitVertex();
-
-        }
-
-        EndPrimitive();
-
-    }
-}

data/shaders/pointShadowDepth.vert

@@ -1,10 +0,0 @@
-#version 330 core
-
-layout(location = 0) in vec3 a_position;
-
-uniform mat4 u_modelMatrix;
-
-void main() {
-
-    gl_Position = u_modelMatrix * vec4(a_position, 1.0f);
-}