diff options
| -rw-r--r-- | viewport.h | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -111,7 +111,7 @@ public: assert(dot(r, v) < 1e-8); assert(dot(u, v) < 1e-8); // iterate over every pixel on the image - for (int j = -img_hh; j < img_hh; ++j) { // axis y, transformation is needed + for (int j = -img_hh + 1; j <= img_hh; ++j) { // axis y, transformation is needed for (int i = -img_hw; i < img_hw; ++i) { // axis x bias(bx, by); // get a random bias (bx, by) for sub-pixel sampling assert(0 <= bx); @@ -124,7 +124,7 @@ public: const auto dir = r + off; // direction vector from camera to current pixel on screen ray3d ray{cxyz, dir}; // from camera to pixel (on the viewport) const auto pixel = world.color<U>(ray, ruvg); - const auto x_ = i + img_hw, y_ = j + img_hh; + const auto x_ = i + img_hw, y_ = -j + img_hh; image.set(x_, y_, pixel); #ifdef LOG_TRACE |