diff options
Diffstat (limited to 'apps/recorder')
| -rw-r--r-- | apps/recorder/bmp.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/apps/recorder/bmp.c b/apps/recorder/bmp.c index 43afcc5e98..011a4d60fe 100644 --- a/apps/recorder/bmp.c +++ b/apps/recorder/bmp.c @@ -470,8 +470,9 @@ void output_row_8_native(uint32_t row, void * row_in, *dest = LCD_RGBPACK_LCD(r, g, b); dest += STRIDE_MAIN(1, ctx->bm->height); if (bm_alpha) { - /* pack alpha channel for 2 pixels into 1 byte */ - unsigned alpha = qp->alpha; + /* pack alpha channel for 2 pixels into 1 byte and negate + * according to the interal alpha channel format */ + uint8_t alpha = ~qp->alpha; if (col%2) *bm_alpha++ |= alpha&0xf0; else |