added skybox asset

assets/shaders/deferred.vert

@@ -1,9 +1,22 @@
 #version 450
 
+layout( push_constant ) uniform constants
+{
+  uint lightCount;
+} PushConstants;
+
+layout(set = 1, binding = 0) uniform CameraParam {
+  mat4 projection;
+  mat4 view;
+} Camera;
+
 layout (location = 0) out vec2 outUV;
+layout(location = 1) out vec3 cameraPos;
 
 void main()
 {
 	outUV = vec2((gl_VertexIndex << 1) & 2, gl_VertexIndex & 2);
 	gl_Position = vec4(outUV * 2.0f - 1.0f, 0.0f, 1.0f);
+
+  cameraPos = inverse(Camera.view)[3].xyz;
 }