hal.c File Reference

#include <stddef.h>
#include "hal.h"
#include "limine.h"
#include "color.h"

Functions
int	hal_init (void)
	Initialize the frame buffer.
void	hal_putpixel (uint32_t x, uint32_t y, color_t color)
	Draw a pixel to the screen.
void	hal_fillrect (uint32_t x, uint32_t y, uint32_t w, uint32_t h, color_t color)
	Draw a rectangle to the screen.
uint64_t	hal_width (void)
	Get screen width.
uint64_t	hal_height (void)
	Get screen height.

Variables
static struct limine_framebuffer *	fb = NULL
static volatile struct limine_framebuffer_request	frame_buf_req

Function Documentation

hal_fillrect()

void hal_fillrect	(	uint32_t	x,
		uint32_t	y,
		uint32_t	w,
		uint32_t	h,
		color_t	color
	)

Draw a rectangle to the screen.

Parameters

x	Pixels from left edge of screen to left edge of rectangle
y	Pixels from top edge of screen to top edge of rectangle
w	Width of rectangle in pixels
h	Height of rectangle in pixels
color	Color value to set all pixels within the rectangle to

hal_height()

uint64_t hal_height

(

void

)

Get screen height.

Returns

Height of the screen in pixels

hal_init()

int hal_init

(

void

)

Initialize the frame buffer.

This should be called before any other function in this header, otherwise the behavior is undefined.

Returns

0 on success, non-zero on error

hal_putpixel()

void hal_putpixel	(	uint32_t	x,
		uint32_t	y,
		color_t	color
	)

Draw a pixel to the screen.

Parameters

x	Pixels from left edge
y	Pixels from top edge
color	Color value to set the pixel to

hal_width()

uint64_t hal_width

(

void

)

Get screen width.

Returns

Width of the screen in pixels

Variable Documentation

fb

struct limine_framebuffer* fb = NULL

static

frame_buf_req

volatile struct limine_framebuffer_request frame_buf_req

static

Initial value:

= {
        .response = NULL,
        .revision = 0,
        .id = LIMINE_FRAMEBUFFER_REQUEST_ID,
}