Complete background infrastructure and fix some bmp bugs
diff --git a/limine.bin b/limine.bin
index 00ab4369..20c7cb73 100644
Binary files a/limine.bin and b/limine.bin differ
diff --git a/stage2/drivers/vbe.c b/stage2/drivers/vbe.c
index 0884990c..581aee80 100644
--- a/stage2/drivers/vbe.c
+++ b/stage2/drivers/vbe.c
@@ -6,6 +6,7 @@
#include <lib/blib.h>
#include <lib/real.h>
#include <lib/print.h>
+#include <lib/image.h>
#include <mm/pmm.h>
#define VGA_FONT_WIDTH 8
@@ -33,6 +34,8 @@ static uint16_t vbe_width = 0;
static uint16_t vbe_height = 0;
static uint16_t vbe_bpp = 0;
+static struct image *background;
+
void vbe_plot_px(int x, int y, uint32_t hex) {
size_t fb_i = x + (vbe_pitch / sizeof(uint32_t)) * y;
@@ -50,8 +53,11 @@ void vbe_plot_char(struct vbe_char c, int x, int y) {
uint8_t *glyph = &vga_font[c.c * VGA_FONT_HEIGHT];
for (int i = 0; i < VGA_FONT_HEIGHT; i++) {
- for (int j = VGA_FONT_WIDTH - 1; j >= 0; j--)
- vbe_plot_px(x++, y, (glyph[i] & (1 << j)) ? c.fg : c.bg);
+ for (int j = VGA_FONT_WIDTH - 1; j >= 0; j--) {
+ uint32_t bg_pixel = background == NULL ? c.bg :
+ background->get_pixel(background, x, y);
+ vbe_plot_px(x++, y, (glyph[i] & (1 << j)) ? c.fg : bg_pixel);
+ }
y++;
x = orig_x;
}
@@ -217,12 +223,13 @@ void vbe_putchar(char c) {
}
}
-void vbe_tty_init(int *_rows, int *_cols) {
+void vbe_tty_init(int *_rows, int *_cols, struct image *_background) {
init_vbe(&vbe_framebuffer, &vbe_pitch, &vbe_width, &vbe_height, &vbe_bpp);
vga_font_retrieve();
*_cols = cols = vbe_width / VGA_FONT_WIDTH;
*_rows = rows = vbe_height / VGA_FONT_HEIGHT;
grid = ext_mem_alloc(rows * cols * sizeof(struct vbe_char));
+ background = _background;
vbe_clear(true);
}
diff --git a/stage2/drivers/vbe.h b/stage2/drivers/vbe.h
index 03f6ac65..e1682df1 100644
--- a/stage2/drivers/vbe.h
+++ b/stage2/drivers/vbe.h
@@ -3,10 +3,11 @@
#include <stdint.h>
#include <stdbool.h>
+#include <lib/image.h>
int init_vbe(uint32_t **framebuffer, uint16_t *pitch, uint16_t *target_width, uint16_t *target_height, uint16_t *target_bpp);
-void vbe_tty_init(int *rows, int *cols);
+void vbe_tty_init(int *rows, int *cols, struct image *background);
void vbe_putchar(char c);
void vbe_clear(bool move);
diff --git a/stage2/lib/bmp.c b/stage2/lib/bmp.c
index ae6907b4..5f101c9a 100644
--- a/stage2/lib/bmp.c
+++ b/stage2/lib/bmp.c
@@ -3,6 +3,7 @@
#include <lib/image.h>
#include <lib/bmp.h>
#include <lib/libc.h>
+#include <lib/blib.h>
#include <mm/pmm.h>
struct bmp_header {
@@ -28,14 +29,25 @@ struct bmp_header {
} __attribute__((packed));
struct bmp_local {
- uint32_t *image;
+ uint8_t *image;
uint32_t pitch;
struct bmp_header header;
};
static uint32_t get_pixel(struct image *this, int x, int y) {
struct bmp_local *local = this->local;
- return local->image[x + (local->pitch / local->header.bi_bpp) * y];
+ struct bmp_header *header = &local->header;
+
+ x %= header->bi_width;
+ y %= header->bi_height;
+
+ size_t pixel_offset = local->pitch * (header->bi_height - y - 1) + x * (header->bi_bpp / 8);
+
+ uint32_t composite = 0;
+ for (int i = 0; i < header->bi_bpp / 8; i++)
+ composite |= (uint32_t)local->image[pixel_offset + i] << (i * 8);
+
+ return composite;
}
int bmp_open_image(struct image *image, struct file_handle *file) {
@@ -45,12 +57,16 @@ int bmp_open_image(struct image *image, struct file_handle *file) {
if (memcmp(&header.bf_signature, "BM", 2) != 0)
return -1;
+ // We don't support bpp lower than 8
+ if (header.bi_bpp < 8)
+ return -1;
+
struct bmp_local *local = ext_mem_alloc(sizeof(struct bmp_local));
local->image = ext_mem_alloc(header.bf_size);
fread(file, local->image, header.bf_offset, header.bf_size);
- local->pitch = header.bi_width * (header.bi_bpp / 8);
+ local->pitch = ALIGN_UP(header.bi_width * header.bi_bpp, 32) / 8;
local->header = header;
image->x_size = header.bi_width;
diff --git a/stage2/lib/term.c b/stage2/lib/term.c
index 2bb85da7..cf08ba44 100644
--- a/stage2/lib/term.c
+++ b/stage2/lib/term.c
@@ -3,6 +3,7 @@
#include <stdbool.h>
#include <lib/term.h>
#include <lib/real.h>
+#include <lib/image.h>
#include <drivers/vga_textmode.h>
#include <drivers/vbe.h>
@@ -23,9 +24,9 @@ void (*set_text_bg)(int bg);
static int rows, cols;
-void term_vbe(void) {
+void term_vbe(struct image *background) {
term_deinit();
- vbe_tty_init(&rows, &cols);
+ vbe_tty_init(&rows, &cols, background);
raw_putchar = vbe_putchar;
clear = vbe_clear;
diff --git a/stage2/lib/term.h b/stage2/lib/term.h
index 4a4be458..97480a41 100644
--- a/stage2/lib/term.h
+++ b/stage2/lib/term.h
@@ -3,6 +3,7 @@
#include <stddef.h>
#include <stdbool.h>
+#include <lib/image.h>
extern void (*raw_putchar)(char c);
extern void (*clear)(bool move);
@@ -13,7 +14,7 @@ extern void (*get_cursor_pos)(int *x, int *y);
extern void (*set_text_fg)(int fg);
extern void (*set_text_bg)(int bg);
-void term_vbe(void);
+void term_vbe(struct image *background);
void term_textmode(void);
void term_deinit(void);
void term_write(const char *buf, size_t count);
diff --git a/stage2/main.c b/stage2/main.c
index 2a8a8f14..5c7ec2a9 100644
--- a/stage2/main.c
+++ b/stage2/main.c
@@ -46,7 +46,7 @@ void entry(int boot_drive) {
init_e820();
init_memmap();
- char *cmdline = menu();
+ char *cmdline = menu(boot_drive);
char proto[32];
if (!config_get_value(proto, 0, 32, "KERNEL_PROTO")) {
diff --git a/stage2/menu.c b/stage2/menu.c
index 390867ed..4b5d2e3e 100644
--- a/stage2/menu.c
+++ b/stage2/menu.c
@@ -15,14 +15,43 @@ static char *cmdline;
static char config_entry_name[1024];
-char *menu(void) {
+char *menu(int boot_drive) {
cmdline = conv_mem_alloc(CMDLINE_MAX);
char buf[16];
// If there is no TEXTMODE config key or the value is not "on", enable graphics
if (config_get_value(buf, 0, 16, "TEXTMODE") == NULL || strcmp(buf, "on")) {
- term_vbe();
+ int bg_drive;
+ if (!config_get_value(buf, 0, 16, "BACKGROUND_DRIVE")) {
+ bg_drive = boot_drive;
+ } else {
+ bg_drive = (int)strtoui(buf);
+ }
+ int bg_part;
+ if (!config_get_value(buf, 0, 16, "BACKGROUND_PARTITION")) {
+ goto nobg;
+ } else {
+ bg_part = (int)strtoui(buf);
+ }
+ if (!config_get_value(cmdline, 0, CMDLINE_MAX, "BACKGROUND_PATH"))
+ goto nobg;
+
+ struct file_handle *bg_file = conv_mem_alloc(sizeof(struct file_handle));
+ if (fopen(bg_file, bg_drive, bg_part, cmdline))
+ goto nobg;
+
+ struct image *bg = conv_mem_alloc(sizeof(struct image));
+ if (open_image(bg, bg_file))
+ goto nobg;
+
+ term_vbe(bg);
+ goto yesbg;
+
+ nobg:
+ term_vbe(NULL);
+
+ yesbg:;
}
int timeout;
diff --git a/stage2/menu.h b/stage2/menu.h
index 8d04432f..b6e8c901 100644
--- a/stage2/menu.h
+++ b/stage2/menu.h
@@ -1,6 +1,6 @@
#ifndef __MENU_H__
#define __MENU_H__
-char *menu(void);
+char *menu(int boot_drive);
#endif
diff --git a/test/limine.cfg b/test/limine.cfg
index 690e7bdb..775a29a4 100644
--- a/test/limine.cfg
+++ b/test/limine.cfg
@@ -1,6 +1,5 @@
TIMEOUT=3
-BACKGROUND_DRIVE=0
BACKGROUND_PARTITION=0
BACKGROUND_PATH=bg.bmp
