diff options
| author | Aidan MacDonald <amachronic@protonmail.com> | 2023-01-08 10:44:47 +0000 |
|---|---|---|
| committer | Aidan MacDonald <amachronic@protonmail.com> | 2023-01-08 10:50:39 +0000 |
| commit | 593103cd8bdae024e28932c94ce5441283161393 (patch) | |
| tree | e250e86f717d8c8c7771b25c3320a15ed90cf622 | |
| parent | 528b6a9a15041999ab205af2ce9674b0277334f7 (diff) | |
| download | rockbox-593103cd8b.tar.gz rockbox-593103cd8b.zip | |
lcd: Fix 4bpp optimized 16-bit alpha blit
Fixes a bug introduced by commit 5d0c382a59 that caused graphical
corruption on anti-aliased fonts.
Change-Id: I6052ca758382bd9a1154d2e2208dee633dd17715
| -rw-r--r-- | firmware/drivers/lcd-16bit-common.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/firmware/drivers/lcd-16bit-common.c b/firmware/drivers/lcd-16bit-common.c index af1171b401..9d24dfe16e 100644 --- a/firmware/drivers/lcd-16bit-common.c +++ b/firmware/drivers/lcd-16bit-common.c @@ -498,10 +498,11 @@ static void ICODE_ATTR lcd_alpha_bitmap_part_mix( if (stride_alpha) { \ alpha_pixels = stride_alpha - alpha_pixels; \ alpha += alpha_pixels / ALPHA_PIXELS_PER_BYTE; \ - alpha_data = *alpha++ ^ dmask; \ alpha_pixels &= 1; \ - if (alpha_pixels) \ + if (alpha_pixels) { \ + alpha_data = *alpha++ ^ dmask; \ alpha_data >>= ALPHA_BPP; \ + } \ } \ } while(0) #define READ_ALPHA() \ |