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feat(fbdev,sdl): support display rotation (#5703)

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Co-authored-by: Gabor Kiss-Vamosi <kisvegabor@gmail.com>
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Johannes Marbach
2024-03-21 12:36:38 +01:00
committed by GitHub
parent 910257fa8a
commit 1b97f0f2c0
7 changed files with 205 additions and 64 deletions
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docs/porting/display.rst
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@@ -152,6 +152,17 @@ reconfiguring the hardware. In lack of hardware display rotation support
:cpp:expr:`lv_draw_sw_rotate` can be used to rotate the buffer in the
``flush_cb``.
:cpp:expr:`lv_display_rotate_area(display, &area)` rotates the rendered area
according to the current rotation settings of the display.
Note that in :cpp:enumerator:`LV_DISPLAY_RENDER_MODE_DIRECT` the small changed areas
are rendered directly in the frame buffer so they cannot be
rotated later. Therefore in direct mode only the whole frame buffer can be rotated.
The same is true for :cpp:enumerator:`LV_DISPLAY_RENDER_MODE_FULL`.
In the case of :cpp:enumerator:`LV_DISPLAY_RENDER_MODE_PARTIAL`the small rendered areas
can be rotated on their own before flushing to the frame buffer.
Color format
------------