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cfb: support non vtiled displays

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Added support for drawing points on non-vtiled displays.

Signed-off-by: Yishai Jaffe <yishai1999@gmail.com>
This commit is contained in:
Yishai Jaffe 2025-02-13 16:43:51 +02:00 • committed by Benjamin Cabé
commit 8299817fba
1 changed files with 11 additions and 3 deletions
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14
subsys/fb/cfb.c
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@ -273,8 +273,16 @@ static uint8_t draw_char_htmono(const struct char_framebuffer *fb,
static inline void draw_point(struct char_framebuffer *fb, int16_t x, int16_t y)
{
const bool need_reverse = ((fb->screen_info & SCREEN_INFO_MONO_MSB_FIRST) != 0);
const size_t index = ((y / 8) * fb->x_res);
uint8_t m = BIT(y % 8);
size_t index;
uint8_t m;
if ((fb->screen_info & SCREEN_INFO_MONO_VTILED) != 0) {
index = (x + (y / 8) * fb->x_res);
m = BIT(y % 8);
} else {
index = ((x / 8) + y * (fb->x_res / 8));
m = BIT(x % 8);
}
if (x < 0 || x >= fb->x_res) {
return;
@ -288,7 +296,7 @@ static inline void draw_point(struct char_framebuffer *fb, int16_t x, int16_t y)
m = byte_reverse(m);
}
fb->buf[index + x] |= m;
fb->buf[index] |= m;
}
static void draw_line(struct char_framebuffer *fb, int16_t x0, int16_t y0, int16_t x1, int16_t y1)