From 6fcb46123c154b3360640c0c0be611fde74ffe57 Mon Sep 17 00:00:00 2001 From: Kirill Petrashin Date: Mon, 29 Jun 2026 19:51:00 +0300 Subject: Implement a raycaster --- framebuffer.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'framebuffer.c') diff --git a/framebuffer.c b/framebuffer.c index 32c0f0f..ce48f35 100644 --- a/framebuffer.c +++ b/framebuffer.c @@ -73,7 +73,11 @@ void fb_put(Framebuffer fb, size_t row, size_t col, Pixel pixel) { } void fb_vert_line(Framebuffer fb, size_t x, size_t y1, size_t y2, Pixel pixel) { - assert(y2 >= y1); + if (y2 < y1) { + y2 ^= y1; + y1 ^= y2; + y2 ^= y1; + }; for (size_t y = y1; y <= y2; y++) { fb.fb[y][x] = pixel; -- cgit v1.2.3