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#ifndef MELVIX_VESA_H
#define MELVIX_VESA_H
#include <stdint.h>
struct vbe_best {
uint8_t bpp;
uint16_t height;
uint16_t width;
uint32_t framebuffer;
uint32_t bytes_per_line;
uint32_t bytes_per_pixel;
uint32_t x_cur_max;
uint32_t y_cur_max;
} __attribute__ ((packed));
struct vbe_info {
char signature[4]; // must be "VESA" to indicate valid VBE support
uint16_t version; // VBE version; high byte is major version, low byte is minor version
uint32_t oem; // segment:offset pointer to OEM
uint32_t capabilities; // bitfield that describes card capabilities
uint32_t video_modes; // segment:offset pointer to list of supported video modes
uint16_t video_memory; // amount of video memory in 64KB blocks
uint16_t software_rev; // software revision
uint32_t vendor; // segment:offset to card vendor string
uint32_t product_name; // segment:offset to card model name
uint32_t product_rev; // segment:offset pointer to product revision
char reserved[222]; // reserved for future expansion
char oem_data[256]; // OEM BIOSes store their strings in this area
} __attribute__ ((packed));
struct vbe_mode_info {
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];
} __attribute__ ((packed));
#endif
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