Capabilities a backend reports after display_init. More...

#include <ra8_display_pal.h>

Data Fields
uint16_t	width_px
	Display visible width.
uint16_t	height_px
	Display visible height.
display_pixfmt_t	pixfmt
	App-facing canonical format.
uint32_t	stride_bytes
	Framebuffer row stride in bytes.
uint32_t	refresh_latency_us_typ
	Typical flush() cost in usec.
bool	supports_partial_update
	true => sub-rect flush honoured.
bool	continuous_refresh
	true => panel scans continuously.

Detailed Description

Capabilities a backend reports after display_init.

Lets apps query the runtime properties of the bound backend without coupling to its implementation. refresh_latency_us_typ is 0 for scan-out panels (LCD) and tens to hundreds of milliseconds for e-ink in quality mode – apps that drive animation should branch on it rather than blindly issuing one display_flush per frame.

Since: 0.1.0

Definition at line 145 of file ra8_display_pal.h.

Field Documentation

◆ continuous_refresh

bool display_caps_t::continuous_refresh

true => panel scans continuously.

Definition at line 152 of file ra8_display_pal.h.

◆ height_px

uint16_t display_caps_t::height_px

Display visible height.

Definition at line 147 of file ra8_display_pal.h.

Referenced by display_full_rect(), internal_eink_check_rect(), and internal_lcd_check_rect().

◆ pixfmt

display_pixfmt_t display_caps_t::pixfmt

App-facing canonical format.

Definition at line 148 of file ra8_display_pal.h.

◆ refresh_latency_us_typ

uint32_t display_caps_t::refresh_latency_us_typ

Typical flush() cost in usec.

Definition at line 150 of file ra8_display_pal.h.

◆ stride_bytes

uint32_t display_caps_t::stride_bytes

Framebuffer row stride in bytes.

Definition at line 149 of file ra8_display_pal.h.

◆ supports_partial_update

bool display_caps_t::supports_partial_update

true => sub-rect flush honoured.

Definition at line 151 of file ra8_display_pal.h.

◆ width_px

uint16_t display_caps_t::width_px

Display visible width.

Definition at line 146 of file ra8_display_pal.h.