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feat(dma2d): add support for ARGB1555 color on top of RGB565 format (#7555)

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Signed-off-by: Felipe Neves <felipe@lvgl.io>
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Felipe Neves 2025-01-09 23:41:02 -03:00 committed by GitHub
parent 4e52b15508
commit 5563787cac
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3 changed files with 12 additions and 1 deletions
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4
docs/details/integration/chip/stm32.rst
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@ -292,4 +292,8 @@ If ``LV_USE_DRAW_DMA2D_INTERRUPT`` is enabled then you are required to call
:cpp:expr:`lv_draw_dma2d_transfer_complete_interrupt_handler` whenever the DMA2D
"transfer complete" global interrupt is received.
DMA2D also makes possible to mix layers that have color format on
:c:macro:`LV_COLOR_FORMAT_ARGB1555` on top of :c:macro:`LV_COLOR_FORMAT_RGB565`
layers.
If your STM device has a NeoChrom GPU, you can use the :ref:`Nema GFX renderer <nema_gfx>` instead.

4
docs/details/integration/driver/display/st_ltdc.rst
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@ -103,6 +103,10 @@ partial buffers in parallel with other LVGL tasks, whether or not OS is
enabled. If the display is not partial, then there is no need to enable this
option.
Additionally it is possible to mix layers that have color format on
:c:macro:`LV_COLOR_FORMAT_ARGB1555` on top of :c:macro:`LV_COLOR_FORMAT_RGB565`
layers using the DMA2D.
It must not be enabled at the same time as :c:macro:`LV_USE_DRAW_DMA2D`.
See the :ref:`DMA2D support <dma2d>`.

5
src/draw/dma2d/lv_draw_dma2d.c
View File

@ -131,6 +131,8 @@ lv_draw_dma2d_output_cf_t lv_draw_dma2d_cf_to_dma2d_output_cf(lv_color_format_t
return LV_DRAW_DMA2D_OUTPUT_CF_RGB888;
case LV_COLOR_FORMAT_RGB565:
return LV_DRAW_DMA2D_OUTPUT_CF_RGB565;
case LV_COLOR_FORMAT_ARGB1555:
return LV_DRAW_DMA2D_OUTPUT_CF_ARGB1555;
default:
LV_ASSERT_MSG(false, "unsupported output color format");
}
@ -310,7 +312,8 @@ static int32_t evaluate_cb(lv_draw_unit_t * draw_unit, lv_draw_task_t * task)
&& (dsc->header.cf == LV_COLOR_FORMAT_ARGB8888
|| dsc->header.cf == LV_COLOR_FORMAT_XRGB8888
|| dsc->header.cf == LV_COLOR_FORMAT_RGB888
|| dsc->header.cf == LV_COLOR_FORMAT_RGB565)
|| dsc->header.cf == LV_COLOR_FORMAT_RGB565
|| dsc->header.cf == LV_COLOR_FORMAT_ARGB1555)
&& (dsc->base.layer->color_format == LV_COLOR_FORMAT_ARGB8888
|| dsc->base.layer->color_format == LV_COLOR_FORMAT_XRGB8888
|| dsc->base.layer->color_format == LV_COLOR_FORMAT_RGB888