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Change: Framebuffer puts/printf graphics mode OK

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xamidev
2024-08-20 13:01:13 +02:00
parent 98d3d346c2
commit 52a92a5358
3 changed files with 48 additions and 60 deletions
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39
src/kernel/kmain.c
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@@ -37,13 +37,13 @@ char* ascii_title =
unsigned int g_multiboot_info_address;
uint32_t white = 0xFFFFFFFF;
uint32_t black = 0x00000000;
uint32_t red = 0x00FF0000;
uint32_t* framebuffer;
int scanline;
// in characters, not pixels
uint32_t VGA_WIDTH;
uint32_t VGA_HEIGHT;
void kmain(multiboot2_info *mb_info)
{
@@ -78,34 +78,35 @@ serial_printf(3, "Framebuffer BPP: %u\r\n", fb_info->framebuffer_bpp);
uint32_t pitch = fb_info->framebuffer_pitch;
uint32_t bpp = fb_info->framebuffer_bpp;
scanline = width * (bpp/8);
//8x16 font padded with 1 for each char = 9px/char
VGA_WIDTH = width/9;
VGA_HEIGHT = height/9;
scanline = width * (bpp/8);
draw_char('S', 2, 2, white, black);
draw_char('A', 3, 2, white, black);
draw_char('L', 4, 2, white, black);
draw_char('U', 5, 2, white, black);
draw_char('T', 6, 2, white, black);
int y_offset = 0;
for (int c=0; c<512; c++)
/* TEST print charset
int y_offset = 2;
for (int i=0; i<512; i++)
{
//draw_char(framebuffer, (int)pitch, (int)bpp, 20+(c-65)*16, 110+y_offset, c, white, black);
if (c%100 == 0) y_offset += 30;
if (i%(width/9)==0) y_offset++;
draw_char(0+i, 0+i, y_offset, white, black);
}
*/
/* TEST print red square
for (uint32_t y = 0; y < 10; y++) {
for (uint32_t x = 0; x < 10; x++) {
putpixel(framebuffer, (int)pitch, (int)bpp, x, y, red);
//framebuffer[y * (pitch / 4) + x] = 0xFF0000; // Rouge
}
}
*/
log("Drew to framebuffer.\r\n", 3);
}
puts("This should NOT work.");
puts("This should work by now! Enter Graphics Mode.");
printf("\nMy name is %s, and I'm %d. 0x%x", "Alan", 34, 0xdeadbeef);
while (1);