roska/kernel
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Plotting fancy stripe on graphical framebuffer

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This commit is contained in:
Lauren Toivanen 2023-06-16 05:53:26 +03:00
parent 743b22ccd6
commit 79dcbb8393
Signed by: jt
GPG key ID: 9151B109B73ECAD5
2 changed files with 48 additions and 15 deletions
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43
kernel.c
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@ -57,13 +57,45 @@ void kmain (unsigned int mbootmagick, multiboot_info_t* mbootinfo) {
}
if (mbootinfo->flags & MULTIBOOT_INFO_FRAMEBUFFER_INFO) {
vga_write("\nFramebuffer: ");
vga_write("address: 0x");
vga_write(ultoa(mbootinfo->framebuffer_addr, 16));
serial_write_string("\nFramebuffer: ");
serial_write_string("address: 0x");
vga_write("address: 0x");
serial_write_string("\n Address: 0x");
vga_write(ultoa(mbootinfo->framebuffer_addr, 16));
serial_write_string(ultoa(mbootinfo->framebuffer_addr, 16));
unsigned long *vmem = mbootinfo->framebuffer_addr;
*vmem = 0xff00ff;
serial_write_string("\n Dimensions: ");
serial_write_string(itoa(mbootinfo->framebuffer_width, 10));
serial_write_string("X");
serial_write_string(itoa(mbootinfo->framebuffer_height, 10));
serial_write_string("x");
serial_write_string(itoa(mbootinfo->framebuffer_bpp, 10));
serial_write_string("\n Pitch: ");
serial_write_string(itoa(mbootinfo->framebuffer_pitch, 10));
serial_write_string("\n RPos:");
serial_write_string(itoa(mbootinfo->framebuffer_red_field_position, 10));
serial_write_string("\n GPos:");
serial_write_string(itoa(mbootinfo->framebuffer_green_field_position, 10));
serial_write_string("\n BPos:");
serial_write_string(itoa(mbootinfo->framebuffer_blue_field_position, 10));
unsigned long *vmem;
int i;
for (i = 0; i < mbootinfo->framebuffer_height; i++) {
vmem = mbootinfo->framebuffer_addr + i*mbootinfo->framebuffer_pitch + i*(mbootinfo->framebuffer_bpp/8);
*vmem = 0xff<<mbootinfo->framebuffer_red_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
*vmem = 0xff<<mbootinfo->framebuffer_red_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
*vmem = 0xff<<mbootinfo->framebuffer_red_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
*vmem = 0xff<<mbootinfo->framebuffer_red_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
*vmem = 0xff<<mbootinfo->framebuffer_green_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
*vmem = 0xff<<mbootinfo->framebuffer_green_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
*vmem = 0xff<<mbootinfo->framebuffer_green_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
*vmem = 0xff<<mbootinfo->framebuffer_green_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
*vmem = 0xff<<mbootinfo->framebuffer_blue_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
*vmem = 0xff<<mbootinfo->framebuffer_blue_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
*vmem = 0xff<<mbootinfo->framebuffer_blue_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
*vmem = 0xff<<mbootinfo->framebuffer_blue_field_position;((char *)vmem)+=mbootinfo->framebuffer_bpp/8;
}
} else {
vga_write_color("\nVideo info not available", VGA_COLOR_BLACK, VGA_COLOR_RED);
@ -71,4 +103,5 @@ void kmain (unsigned int mbootmagick, multiboot_info_t* mbootinfo) {
return;
}
vga_write_line("\nExecution finished, halting...");
serial_write_string("\nExecution finished, halting...");
}