From 4130562b1555cabe441efe9420cebe12e7ed8d39 Mon Sep 17 00:00:00 2001 From: Benji Dial Date: Sat, 13 Jan 2024 16:43:49 -0500 Subject: application loading --- applications/init/main.cpp | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 applications/init/main.cpp (limited to 'applications/init') diff --git a/applications/init/main.cpp b/applications/init/main.cpp new file mode 100644 index 0000000..7aa2a38 --- /dev/null +++ b/applications/init/main.cpp @@ -0,0 +1,24 @@ +#include + +using mercury::syscall::encoded_color; +using mercury::syscall::color; + +encoded_color *fb; +uint32_t fb_width; +uint32_t fb_height; +uint32_t fb_pitch; + +int main(int, char **) { + mercury::syscall::get_framebuffer(fb, fb_width, fb_height, fb_pitch); + for (uint32_t y = 0; y < fb_height; ++y) + for (uint32_t x = 0; x < fb_width; ++x) { + color c = { + .r = 0, + .g = (uint8_t)(y * 255 / fb_height), + .b = (uint8_t)(x * 255 / fb_width) + }; + fb[y * fb_pitch + x] = mercury::syscall::encode_color(c); + } + mercury::syscall::draw_framebuffer(); + return 0; +} -- cgit v1.2.3