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#ifndef MELVIX_VESA_H
#define MELVIX_VESA_H
#include <stdint.h>
typedef struct __attribute__ ((packed)) {
uint16_t attributes; // deprecated, only bit 7 should be of interest to you, and it indicates the mode supports a linear frame buffer.
uint8_t window_a; // deprecated
uint8_t window_b; // deprecated
uint16_t granularity; // deprecated; used while calculating bank numbers
uint16_t window_size;
uint16_t segment_a;
uint16_t segment_b;
uint32_t win_func_ptr; // deprecated; used to switch banks from protected mode without returning to real mode
uint16_t pitch; // number of bytes per horizontal line
uint16_t width; // width in pixels
uint16_t height; // height in pixels
uint8_t w_char; // unused...
uint8_t y_char; // ...
uint8_t planes;
uint8_t bpp; // bits per pixel in this mode
uint8_t banks; // deprecated; total number of banks in this mode
uint8_t memory_model;
uint8_t bank_size; // deprecated; size of a bank, almost always 64 KB but may be 16 KB...
uint8_t image_pages;
uint8_t reserved0;
uint8_t red_mask;
uint8_t red_position;
uint8_t green_mask;
uint8_t green_position;
uint8_t blue_mask;
uint8_t blue_position;
uint8_t reserved_mask;
uint8_t reserved_position;
uint8_t direct_color_attributes;
uint32_t framebuffer; // physical address of the linear frame buffer; write here to draw to the screen
uint32_t off_screen_mem_off;
uint16_t off_screen_mem_size; // size of memory in the framebuffer but not being displayed on the screen
uint8_t reserved1[206];
} vbe_mode_info;
vbe_mode_info *vbe_set_mode(unsigned short mode);
typedef struct __attribute__ ((packed)) {
unsigned short di, si, bp, sp, bx, dx, cx, ax;
unsigned short gs, fs, es, ds, eflags;
} regs16_t;
extern void int32(unsigned char intnum, regs16_t *regs);
int vbe_current_mode;
int vbe_width;
int vbe_height;
int vbe_bpp;
int vbe_pitch;
#endif
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