From fb88595decdde0629d808df7c659b91a9202d898 Mon Sep 17 00:00:00 2001 From: Josh Holtrop Date: Tue, 20 Oct 2020 17:28:16 -0400 Subject: [PATCH] add fb_clear(), just clear to solid bluish color for now --- src/fb.c | 22 ++++++---------------- 1 file changed, 6 insertions(+), 16 deletions(-) diff --git a/src/fb.c b/src/fb.c index 4618d9a..85d5ae3 100644 --- a/src/fb.c +++ b/src/fb.c @@ -17,28 +17,18 @@ static inline void fb_set_pixel(int x, int y, uint8_t r, uint8_t g, uint8_t b) fb[fb_pitch * y / 4u + x] = build_pixel(r, g, b); } +static void fb_clear(void) +{ + memset32(fb, 0x002C55u, fb_pitch * fb_height / 4u); +} + void fb_init(uint32_t * addr, uint32_t width, uint32_t height, uint32_t pitch) { fb = addr; fb_width = width; fb_height = height; fb_pitch = pitch; - for (uint32_t row = 0u; row < fb_height; row++) - { - for (uint32_t col = 0u; col < fb_width; col++) - { - uint32_t er = (col * fb_height) / fb_width; - int32_t dr = (int32_t)row - (int32_t)er; - if (dr < 0) - { - dr = -dr; - } - uint8_t r = 255u - ((uint32_t)dr * 256u / fb_height); - uint8_t g = col * 256u / fb_width; - uint8_t b = row * 256u / fb_height; - fb[fb_pitch * row / 4u + col] = (r << 16u) | (g << 8u) | b; - } - } + fb_clear(); } bool fb_ready(void)