Fix shader compile error for inside volume raycasting

shaders/framebuffer/resolveframebuffer.vert

@@ -25,9 +25,15 @@
 #version __CONTEXT__
 
 in vec4 position;
+
 out vec2 texCoord;
+out vec3 vPosition;
+out vec4 worldPosition;
 
 void main() {
     gl_Position = position;
     texCoord = 0.5 + position.xy / 2.0;
+
+    vPosition = position.xyz;
+    worldPosition = position;
 }