* [PATCH] video: Fix line padding calculation for 16 and 24 BPP bitmaps [not found] <CGME20201201113117eucas1p18b5d1379afd4146731a26b9cb922dbc1@eucas1p1.samsung.com> @ 2020-12-01 11:30 ` Sylwester Nawrocki 2020-12-01 21:59 ` Jaehoon Chung 2021-04-11 19:08 ` Anatolij Gustschin 0 siblings, 2 replies; 3+ messages in thread From: Sylwester Nawrocki @ 2020-12-01 11:30 UTC (permalink / raw) To: u-boot Each row in the pixel array in the bitmap file is padded if necessary so the row size is always a multiple of 4 bytes. In current code the complement of row size to a multiple of 4 bytes is further unnecessarily multiplied by the pixel size. This results in incorrect displaying of bitmaps having row size that is not a multiple of 4 bytes. Fix this by removing the unnecessary multiplication. Tested with 24BPP bitmap and XRGB32 display. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> --- drivers/video/video_bmp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/video/video_bmp.c b/drivers/video/video_bmp.c index 5a4d12c68d..5537378781 100644 --- a/drivers/video/video_bmp.c +++ b/drivers/video/video_bmp.c @@ -328,7 +328,7 @@ int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y, for (j = 0; j < width; j++) fb_put_word(&fb, &bmap); - bmap += (padded_width - width) * 2; + bmap += (padded_width - width); fb -= width * 2 + priv->line_length; } break; @@ -352,7 +352,7 @@ int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y, } } fb -= priv->line_length + width * (bpix / 8); - bmap += (padded_width - width) * 3; + bmap += (padded_width - width); } break; #endif /* CONFIG_BMP_24BPP */ -- 2.17.1 ^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH] video: Fix line padding calculation for 16 and 24 BPP bitmaps 2020-12-01 11:30 ` [PATCH] video: Fix line padding calculation for 16 and 24 BPP bitmaps Sylwester Nawrocki @ 2020-12-01 21:59 ` Jaehoon Chung 2021-04-11 19:08 ` Anatolij Gustschin 1 sibling, 0 replies; 3+ messages in thread From: Jaehoon Chung @ 2020-12-01 21:59 UTC (permalink / raw) To: u-boot On 12/1/20 8:30 PM, Sylwester Nawrocki wrote: > Each row in the pixel array in the bitmap file is padded > if necessary so the row size is always a multiple of 4 bytes. > In current code the complement of row size to a multiple of > 4 bytes is further unnecessarily multiplied by the pixel size. > This results in incorrect displaying of bitmaps having row size > that is not a multiple of 4 bytes. Fix this by removing > the unnecessary multiplication. > > Tested with 24BPP bitmap and XRGB32 display. > > Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Best Regards, Jaehoon Chung > --- > drivers/video/video_bmp.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/video/video_bmp.c b/drivers/video/video_bmp.c > index 5a4d12c68d..5537378781 100644 > --- a/drivers/video/video_bmp.c > +++ b/drivers/video/video_bmp.c > @@ -328,7 +328,7 @@ int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y, > for (j = 0; j < width; j++) > fb_put_word(&fb, &bmap); > > - bmap += (padded_width - width) * 2; > + bmap += (padded_width - width); > fb -= width * 2 + priv->line_length; > } > break; > @@ -352,7 +352,7 @@ int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y, > } > } > fb -= priv->line_length + width * (bpix / 8); > - bmap += (padded_width - width) * 3; > + bmap += (padded_width - width); > } > break; > #endif /* CONFIG_BMP_24BPP */ > ^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH] video: Fix line padding calculation for 16 and 24 BPP bitmaps 2020-12-01 11:30 ` [PATCH] video: Fix line padding calculation for 16 and 24 BPP bitmaps Sylwester Nawrocki 2020-12-01 21:59 ` Jaehoon Chung @ 2021-04-11 19:08 ` Anatolij Gustschin 1 sibling, 0 replies; 3+ messages in thread From: Anatolij Gustschin @ 2021-04-11 19:08 UTC (permalink / raw) To: u-boot On Tue, 1 Dec 2020 12:30:50 +0100 Sylwester Nawrocki s.nawrocki at samsung.com wrote: > Each row in the pixel array in the bitmap file is padded > if necessary so the row size is always a multiple of 4 bytes. > In current code the complement of row size to a multiple of > 4 bytes is further unnecessarily multiplied by the pixel size. > This results in incorrect displaying of bitmaps having row size > that is not a multiple of 4 bytes. Fix this by removing > the unnecessary multiplication. > > Tested with 24BPP bitmap and XRGB32 display. > > Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> > --- > drivers/video/video_bmp.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) applied to u-boot-video/master, thanks! -- Anatolij ^ permalink raw reply [flat|nested] 3+ messages in thread
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2020-12-01 11:30 ` [PATCH] video: Fix line padding calculation for 16 and 24 BPP bitmaps Sylwester Nawrocki
2020-12-01 21:59 ` Jaehoon Chung
2021-04-11 19:08 ` Anatolij Gustschin
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