Finish edge compute shader

QTProject/subdivision-edge.compute

@@ -21,8 +21,15 @@ layout(std430, binding=2) writeonly buffer Output {
 };
 
 void main(){
-    edges[gl_GlobalInvocationID.x].norm = vec3(0.0, 0.0, 0.0);
     edges[gl_GlobalInvocationID.x].uv = vec2(0.0, 0.0);
 
-    edges[gl_GlobalInvocationID.x].pos = 3.0/8.0 * (vertices[indices[gl_GlobalInvocationID.x][0]].pos + vertices[indices[gl_GlobalInvocationID.x][1]].pos) + 1.0/8.0 * (vertices[indices[gl_GlobalInvocationID.x][2]].pos + vertices[indices[gl_GlobalInvocationID.y][3]].pos);
+    Vertex a = vertices[indices[gl_GlobalInvocationID.x][0]];
+    Vertex b = vertices[indices[gl_GlobalInvocationID.x][1]];
+    Vertex c = vertices[indices[gl_GlobalInvocationID.x][2]];
+    Vertex d = vertices[indices[gl_GlobalInvocationID.x][3]];
+
+    vec3 pos;
+
+    edges[gl_GlobalInvocationID.x].pos = 3.0f/8.0f * a.pos + 3.0f/8.0f * b.pos + 1.0f/8.0f * c.pos + 1.0f/8.0f * d.pos;
+    edges[gl_GlobalInvocationID.x].norm = normalize(3.0/8.0 * (vertices[indices[gl_GlobalInvocationID.x][0]].norm + vertices[indices[gl_GlobalInvocationID.x][1]].norm) + 1.0/8.0 * (vertices[indices[gl_GlobalInvocationID.x][2]].norm + vertices[indices[gl_GlobalInvocationID.y][3]].norm));
 }