fixed negative distance in voxel traversing

src/shaders/shader.frag

@@ -7,9 +7,10 @@ layout(location=0) out vec4 out_color;
 
 layout(set=0, binding=0) uniform Uniforms 
 {
-    mat4 view_matrix;
-    mat4 proj_matrix_inv;
-    vec3 cam_pos;
+    mat4 _viewMatrix;
+    mat4 _projMatrixInv;
+    vec3 _CamPos;
+    float _Time;
 };
 
 //layout(set = 1, binding = 0) uniform texture3D node_tex;
@@ -30,9 +31,9 @@ layout(set=2,binding=0) uniform usampler3D bricksTexture;
 void main() 
 {
     // Calculate ray direction
-    vec3 view_dir = (proj_matrix_inv * vec4(vert_uv, 0, 1)).xyz;
-    vec3 ray_dir = normalize(view_matrix * vec4(view_dir,0)).xyz;
+    vec3 view_dir = (_projMatrixInv * vec4(vert_uv, 0, 1)).xyz;
+    vec3 ray_dir = normalize(_viewMatrix * vec4(view_dir,0)).xyz;
 
     // Raycast
-    out_color = vec4(castNodes(cam_pos, ray_dir), 1.0);
+    out_color = vec4(castNodes(_CamPos, ray_dir), 1.0);
 }