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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2025-02-17 13:22:05 +0100 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2025-02-20 08:38:33 +0100 |
| commit | 966a0d49d1cd57165ad3e6232cf9de6fe43ecc63 (patch) | |
| tree | 312a8a021d381075b299416f2000418ff349ebf5 /include | |
| parent | drm/ast: cursor: Calculate checksum in helper (diff) | |
| download | linux-966a0d49d1cd57165ad3e6232cf9de6fe43ecc63.tar.gz linux-966a0d49d1cd57165ad3e6232cf9de6fe43ecc63.zip | |
drm/ast: cursor: Move format conversion to shared helper
User-space cursor-image data is encoded in ARBG8888, while hardware
supports ARGB4444. Implement the format conversion as part of the
format-helper framework, so that other drivers can benefit.
This allows to respect the damage area of the cursor update. In
previous code, all cursor image data had to be converted on each
update. Now, only the changed areas require an update. The hardware
image is always updated completely, as it is required for the
checksum update.
The format-conversion helper still contains the old implementation's
optimization of writing 2 output pixels at the same time.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250217122336.230067-3-tzimmermann@suse.de
Diffstat (limited to 'include')
| -rw-r--r-- | include/drm/drm_format_helper.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/drm/drm_format_helper.h b/include/drm/drm_format_helper.h index 428d81afe215..a1347e47e9d5 100644 --- a/include/drm/drm_format_helper.h +++ b/include/drm/drm_format_helper.h @@ -110,6 +110,9 @@ void drm_fb_xrgb8888_to_argb2101010(struct iosys_map *dst, const unsigned int *d void drm_fb_xrgb8888_to_gray8(struct iosys_map *dst, const unsigned int *dst_pitch, const struct iosys_map *src, const struct drm_framebuffer *fb, const struct drm_rect *clip, struct drm_format_conv_state *state); +void drm_fb_argb8888_to_argb4444(struct iosys_map *dst, const unsigned int *dst_pitch, + const struct iosys_map *src, const struct drm_framebuffer *fb, + const struct drm_rect *clip, struct drm_format_conv_state *state); int drm_fb_blit(struct iosys_map *dst, const unsigned int *dst_pitch, uint32_t dst_format, const struct iosys_map *src, const struct drm_framebuffer *fb, |