aesthetic.computer
Monorepo for Aesthetic.Computer
aesthetic.computer
1#include <efi.h>
2#include <efilib.h>
3
4EFI_STATUS
5EFIAPI
6efi_main(EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE *SystemTable) {
7 InitializeLib(ImageHandle, SystemTable);
8 EFI_GRAPHICS_OUTPUT_PROTOCOL *gop;
9 EFI_STATUS status;
10
11 // Locate the graphics output protocol
12 status = uefi_call_wrapper(BS->LocateProtocol, 3, &GraphicsOutputProtocol, NULL, (void **)&gop);
13 if (EFI_ERROR(status)) {
14 Print(L"Unable to locate GOP\n");
15 return status;
16 }
17
18 // Assume the display is at least 200px tall and wide for simplicity
19 UINTN line_length = 200;
20 for (UINTN i = 0; i < line_length; i++) {
21 // Calculate the position to set the pixel
22 UINTN x = i;
23 UINTN y = i;
24 UINT32 color = 0x00FFFF00; // Yellow in RGB reserved format
25
26 // Draw the pixel
27 UINTN pos = x + (y * gop->Mode->Info->PixelsPerScanLine);
28 ((UINT32 *)gop->Mode->FrameBufferBase)[pos] = color;
29 }
30
31 // Wait for key press before exiting
32 SystemTable->ConIn->Reset(SystemTable->ConIn, FALSE);
33 EFI_INPUT_KEY Key;
34 while ((SystemTable->ConIn->ReadKeyStroke(SystemTable->ConIn, &Key)) == EFI_NOT_READY);
35
36 return EFI_SUCCESS;
37}
38