message: fix assert for ortho projection
diff: @@ -375,7 +375,7 @@ bool Froxelizer::update() noexcept {
  // the camera.
  minp.z = -planesZ[iz+1];
  maxp.z = -planesZ[iz];
  - assert_invariant(minp.z < maxp.z);
  + assert_invariant(minp.z <= maxp.z);
  for (size_t ix = 0, nx = froxelCountX; ix < nx; ++ix) {
  // left, right planes for all froxels at ix
  @@ -391,7 +391,7 @@ bool Froxelizer::update() noexcept {
  minp.x = std::min(minp.x, px);
  maxp.x = std::max(maxp.x, px);
  }
  - assert_invariant(minp.x < maxp.x);
  + assert_invariant(minp.x <= maxp.x);
  minMaxX[ix] = float2{ minp.x, maxp.x };
  }
  