diff --git a/stb_image.h b/stb_image.h index a6202a3..aa3d397 100644 --- a/stb_image.h +++ b/stb_image.h @@ -5237,7 +5237,10 @@ static void *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req psize = (info.offset - 14 - info.hsz) >> 2; } - s->img_n = ma ? 4 : 3; + if (info.bpp == 24 && ma == 0xff000000) + s->img_n = 3; + else + s->img_n = ma ? 4 : 3; if (req_comp && req_comp >= 3) // we can directly decode 3 or 4 target = req_comp; else @@ -6936,7 +6939,12 @@ static int stbi__bmp_info(stbi__context *s, int *x, int *y, int *comp) return 0; if (x) *x = s->img_x; if (y) *y = s->img_y; - if (comp) *comp = info.ma ? 4 : 3; + if (comp) { + if (info.bpp == 24 && info.ma == 0xff000000) + *comp = 3; + else + *comp = info.ma ? 4 : 3; + } return 1; } #endif