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#include <stdint.h>
#define VESA_FRAMEBUFFER 0xf5100000
#define VESA_PITCH 2560
#define VESA_BPP 4
//https://forum.osdev.org/viewtopic.php?t=10018&p=64358
// TODO: what will happen in 24bit mode?
/*
volatile int c;
int delay()
{
c++;
}
*/
void put_rect(int x,int y, int w, int h,uint32_t col)
{
// start
uint8_t *p=VESA_FRAMEBUFFER+y*VESA_PITCH+x*VESA_BPP;
uint32_t *pix=p;
for(int yy=y; yy<y+h; yy++) // iter over lines
{
for(int xx=x; xx<x+w; xx++) // single line
{
*pix=col;
pix++;
}
pix+=640-w;
}
}
void put_pixel(int x,int y, uint32_t color)
{
uint8_t *p=VESA_FRAMEBUFFER+y*VESA_PITCH+x*VESA_BPP;
uint32_t *pix=p;
*pix=color;
}
void put_pixel_old(int x,int y, int color)
{
//do not write memory outside the screen buffer, check parameters against the VBE mode info
// if (x<0 || x>vesaXres|| y<0 || y>vesaYres) return;
if (x) x = (x*VESA_BPP); // get bytes (divide by 8)
if (y) y = (y*VESA_PITCH);
//uint8_t *cTemp=VbeModeInfoBlock->physbase;
uint8_t *cTemp=VESA_FRAMEBUFFER;
cTemp[x+y] = (uint8_t)(color & 0xff);
cTemp[x+y+1] = (uint8_t)((color>>8) & 0xff);
cTemp[x+y+2] = (uint8_t)((color>>16) & 0xff);
}
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