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video: test: Test partial updates of hardware frame buffer

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With VIDEO_COPY enabled, only the modified parts of the frame buffer are
intended to be copied to the hardware. Add a test that checks this, by
overwriting contents we prepared without telling the video uclass and
then checking if the overwritten contents have been redrawn on the next
sync.

Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Link: https://lore.kernel.org/u-boot/20230821135111.3558478-4-alpernebiyasak@gmail.com/
This commit is contained in:
Alper Nebi Yasak 2023-08-18 17:31:27 +03:00 committed by Simon Glass
parent 6398e1149f
commit 532d003f5f
1 changed files with 54 additions and 0 deletions
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54
test/dm/video.c
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@ -656,3 +656,57 @@ static int dm_test_video_truetype_bs(struct unit_test_state *uts)
return 0;
}
DM_TEST(dm_test_video_truetype_bs, UTF_SCAN_PDATA | UTF_SCAN_FDT);
/* Test partial rendering onto hardware frame buffer */
static int dm_test_video_copy(struct unit_test_state *uts)
{
struct sandbox_sdl_plat *plat;
struct video_uc_plat *uc_plat;
struct udevice *dev, *con;
struct video_priv *priv;
const char *test_string = "\n\tCriticism may not be agreeable, but it is necessary.\t";
ulong addr;
if (!IS_ENABLED(CONFIG_VIDEO_COPY))
return -EAGAIN;
ut_assertok(uclass_find_first_device(UCLASS_VIDEO, &dev));
ut_assertnonnull(dev);
uc_plat = dev_get_uclass_plat(dev);
uc_plat->hide_logo = true;
plat = dev_get_plat(dev);
plat->font_size = 32;
ut_assert(!device_active(dev));
ut_assertok(uclass_first_device_err(UCLASS_VIDEO, &dev));
ut_assertnonnull(dev);
priv = dev_get_uclass_priv(dev);
ut_assertok(read_file(uts, "tools/logos/denx.bmp", &addr));
ut_assertok(video_bmp_display(dev, addr, 0, 0, false));
ut_assertok(uclass_get_device(UCLASS_VIDEO_CONSOLE, 0, &con));
vidconsole_put_string(con, "\n\n\n\n\n");
vidconsole_put_string(con, test_string);
vidconsole_put_string(con, test_string);
ut_asserteq(6678, compress_frame_buffer(uts, dev, false));
ut_assertok(check_copy_frame_buffer(uts, dev));
/*
* Secretly clear the hardware frame buffer, but in a different
* color (black) to see which parts will be overwritten.
*/
memset(priv->copy_fb, 0, priv->fb_size);
/*
* We should have the full content on the main buffer, but only
* the new content should have been copied to the copy buffer.
*/
vidconsole_put_string(con, test_string);
vidconsole_put_string(con, test_string);
ut_asserteq(7589, compress_frame_buffer(uts, dev, false));
ut_asserteq(5278, compress_frame_buffer(uts, dev, true));
return 0;
}
DM_TEST(dm_test_video_copy, UTF_SCAN_PDATA | UTF_SCAN_FDT);