Don't draw lines outside of context

2022-01-22 15:37:57 +01:00 · 2022-01-22 15:37:57 +01:00 · b154aed94d
commit b154aed94d
parent f583b4e69f
1 changed files with 3 additions and 1 deletions
--- a/src/libmittos/graphics/graphics.c
+++ b/src/libmittos/graphics/graphics.c
@ -35,7 +35,9 @@ void draw_line(
  int64_t diff = dx - dy;
  uint32_t *fb = (uint32_t *)ctx->buffer;
  while(1) {
-    fb[PXL(ctx, x, y)] = clr;
+    if(0 < x && x < ctx->width &&
+        0 < y && y < ctx->height)
+      fb[PXL(ctx, x, y)] = clr;
    if(x == x1 && y == y1) break;

    if((2*diff) > -dy) {