/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2005,2006,2007,2008,2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see .
*/
#include
#include
#include
#include
#include
#include
#include
#include
#include
GRUB_MOD_LICENSE ("GPLv3+");
typedef grub_err_t (*grub_video_fb_doublebuf_update_screen_t) (void);
typedef volatile void *framebuf_t;
struct dirty
{
int first_line;
int last_line;
};
static struct
{
struct grub_video_fbrender_target *render_target;
struct grub_video_fbrender_target *back_target;
struct grub_video_palette_data *palette;
framebuf_t pages[2];
unsigned int palette_size;
struct dirty current_dirty;
struct dirty previous_dirty;
/* For page flipping strategy. */
int displayed_page; /* The page # that is the front buffer. */
int render_page; /* The page # that is the back buffer. */
grub_video_fb_set_page_t set_page;
char *offscreen_buffer;
grub_video_fb_doublebuf_update_screen_t update_screen;
} framebuffer;
/* Specify "standard" VGA palette, some video cards may
need this and this will also be used when using RGB modes. */
struct grub_video_palette_data grub_video_fbstd_colors[GRUB_VIDEO_FBSTD_EXT_NUMCOLORS] =
{
/* Standard (3-bit) colors. */
// {R, G, B, A}
{0x00, 0x00, 0x00, 0xFF}, // 0 = black
{0x00, 0x00, 0xA8, 0xFF}, // 1 = blue
{0x00, 0xA8, 0x00, 0xFF}, // 2 = green
{0x00, 0xA8, 0xA8, 0xFF}, // 3 = cyan
{0xA8, 0x00, 0x00, 0xFF}, // 4 = red
{0xA8, 0x00, 0xA8, 0xFF}, // 5 = magenta
{0xA8, 0x54, 0x00, 0xFF}, // 6 = brown
{0xA8, 0xA8, 0xA8, 0xFF}, // 7 = light gray
/* Bright (4-bit) colors. */
{0x54, 0x54, 0x54, 0xFF}, // 8 = dark gray
{0x54, 0x54, 0xFE, 0xFF}, // 9 = bright blue
{0x54, 0xFE, 0x54, 0xFF}, // 10 = bright green
{0x54, 0xFE, 0xFE, 0xFF}, // 11 = bright cyan
{0xFE, 0x54, 0x54, 0xFF}, // 12 = bright red
{0xFE, 0x54, 0xFE, 0xFF}, // 13 = bright magenta
{0xFE, 0xFE, 0x54, 0xFF}, // 14 = yellow
{0xFE, 0xFE, 0xFE, 0xFF}, // 15 = white
/* Extended (8-bit) colors. Completes preceding colors to full RGB332. */
{0x00, 0x00, 0x55, 0xFF}, // RGB332 = (0, 0, 1)
{0x00, 0x00, 0xFF, 0xFF}, // RGB332 = (0, 0, 3)
{0x00, 0x24, 0x00, 0xFF}, // RGB332 = (0, 1, 0)
{0x00, 0x24, 0x55, 0xFF}, // RGB332 = (0, 1, 1)
{0x00, 0x24, 0xAA, 0xFF}, // RGB332 = (0, 1, 2)
{0x00, 0x24, 0xFF, 0xFF}, // RGB332 = (0, 1, 3)
{0x00, 0x48, 0x00, 0xFF}, // RGB332 = (0, 2, 0)
{0x00, 0x48, 0x55, 0xFF}, // RGB332 = (0, 2, 1)
{0x00, 0x48, 0xAA, 0xFF}, // RGB332 = (0, 2, 2)
{0x00, 0x48, 0xFF, 0xFF}, // RGB332 = (0, 2, 3)
{0x00, 0x6C, 0x00, 0xFF}, // RGB332 = (0, 3, 0)
{0x00, 0x6C, 0x55, 0xFF}, // RGB332 = (0, 3, 1)
{0x00, 0x6C, 0xAA, 0xFF}, // RGB332 = (0, 3, 2)
{0x00, 0x6C, 0xFF, 0xFF}, // RGB332 = (0, 3, 3)
{0x00, 0x90, 0x00, 0xFF}, // RGB332 = (0, 4, 0)
{0x00, 0x90, 0x55, 0xFF}, // RGB332 = (0, 4, 1)
{0x00, 0x90, 0xAA, 0xFF}, // RGB332 = (0, 4, 2)
{0x00, 0x90, 0xFF, 0xFF}, // RGB332 = (0, 4, 3)
{0x00, 0xB4, 0x55, 0xFF}, // RGB332 = (0, 5, 1)
{0x00, 0xB4, 0xFF, 0xFF}, // RGB332 = (0, 5, 3)
{0x00, 0xD8, 0x00, 0xFF}, // RGB332 = (0, 6, 0)
{0x00, 0xD8, 0x55, 0xFF}, // RGB332 = (0, 6, 1)
{0x00, 0xD8, 0xAA, 0xFF}, // RGB332 = (0, 6, 2)
{0x00, 0xD8, 0xFF, 0xFF}, // RGB332 = (0, 6, 3)
{0x00, 0xFC, 0x00, 0xFF}, // RGB332 = (0, 7, 0)
{0x00, 0xFC, 0x55, 0xFF}, // RGB332 = (0, 7, 1)
{0x00, 0xFC, 0xAA, 0xFF}, // RGB332 = (0, 7, 2)
{0x00, 0xFC, 0xFF, 0xFF}, // RGB332 = (0, 7, 3)
{0x24, 0x00, 0x00, 0xFF}, // RGB332 = (1, 0, 0)
{0x24, 0x00, 0x55, 0xFF}, // RGB332 = (1, 0, 1)
{0x24, 0x00, 0xAA, 0xFF}, // RGB332 = (1, 0, 2)
{0x24, 0x00, 0xFF, 0xFF}, // RGB332 = (1, 0, 3)
{0x24, 0x24, 0x00, 0xFF}, // RGB332 = (1, 1, 0)
{0x24, 0x24, 0x55, 0xFF}, // RGB332 = (1, 1, 1)
{0x24, 0x24, 0xAA, 0xFF}, // RGB332 = (1, 1, 2)
{0x24, 0x24, 0xFF, 0xFF}, // RGB332 = (1, 1, 3)
{0x24, 0x48, 0x00, 0xFF}, // RGB332 = (1, 2, 0)
{0x24, 0x48, 0x55, 0xFF}, // RGB332 = (1, 2, 1)
{0x24, 0x48, 0xAA, 0xFF}, // RGB332 = (1, 2, 2)
{0x24, 0x48, 0xFF, 0xFF}, // RGB332 = (1, 2, 3)
{0x24, 0x6C, 0x00, 0xFF}, // RGB332 = (1, 3, 0)
{0x24, 0x6C, 0x55, 0xFF}, // RGB332 = (1, 3, 1)
{0x24, 0x6C, 0xAA, 0xFF}, // RGB332 = (1, 3, 2)
{0x24, 0x6C, 0xFF, 0xFF}, // RGB332 = (1, 3, 3)
{0x24, 0x90, 0x00, 0xFF}, // RGB332 = (1, 4, 0)
{0x24, 0x90, 0x55, 0xFF}, // RGB332 = (1, 4, 1)
{0x24, 0x90, 0xAA, 0xFF}, // RGB332 = (1, 4, 2)
{0x24, 0x90, 0xFF, 0xFF}, // RGB332 = (1, 4, 3)
{0x24, 0xB4, 0x00, 0xFF}, // RGB332 = (1, 5, 0)
{0x24, 0xB4, 0x55, 0xFF}, // RGB332 = (1, 5, 1)
{0x24, 0xB4, 0xAA, 0xFF}, // RGB332 = (1, 5, 2)
{0x24, 0xB4, 0xFF, 0xFF}, // RGB332 = (1, 5, 3)
{0x24, 0xD8, 0x00, 0xFF}, // RGB332 = (1, 6, 0)
{0x24, 0xD8, 0x55, 0xFF}, // RGB332 = (1, 6, 1)
{0x24, 0xD8, 0xAA, 0xFF}, // RGB332 = (1, 6, 2)
{0x24, 0xD8, 0xFF, 0xFF}, // RGB332 = (1, 6, 3)
{0x24, 0xFC, 0x00, 0xFF}, // RGB332 = (1, 7, 0)
{0x24, 0xFC, 0x55, 0xFF}, // RGB332 = (1, 7, 1)
{0x24, 0xFC, 0xAA, 0xFF}, // RGB332 = (1, 7, 2)
{0x24, 0xFC, 0xFF, 0xFF}, // RGB332 = (1, 7, 3)
{0x48, 0x00, 0x00, 0xFF}, // RGB332 = (2, 0, 0)
{0x48, 0x00, 0x55, 0xFF}, // RGB332 = (2, 0, 1)
{0x48, 0x00, 0xAA, 0xFF}, // RGB332 = (2, 0, 2)
{0x48, 0x00, 0xFF, 0xFF}, // RGB332 = (2, 0, 3)
{0x48, 0x24, 0x00, 0xFF}, // RGB332 = (2, 1, 0)
{0x48, 0x24, 0x55, 0xFF}, // RGB332 = (2, 1, 1)
{0x48, 0x24, 0xAA, 0xFF}, // RGB332 = (2, 1, 2)
{0x48, 0x24, 0xFF, 0xFF}, // RGB332 = (2, 1, 3)
{0x48, 0x48, 0x00, 0xFF}, // RGB332 = (2, 2, 0)
{0x48, 0x48, 0xAA, 0xFF}, // RGB332 = (2, 2, 2)
{0x48, 0x6C, 0x00, 0xFF}, // RGB332 = (2, 3, 0)
{0x48, 0x6C, 0x55, 0xFF}, // RGB332 = (2, 3, 1)
{0x48, 0x6C, 0xAA, 0xFF}, // RGB332 = (2, 3, 2)
{0x48, 0x6C, 0xFF, 0xFF}, // RGB332 = (2, 3, 3)
{0x48, 0x90, 0x00, 0xFF}, // RGB332 = (2, 4, 0)
{0x48, 0x90, 0x55, 0xFF}, // RGB332 = (2, 4, 1)
{0x48, 0x90, 0xAA, 0xFF}, // RGB332 = (2, 4, 2)
{0x48, 0x90, 0xFF, 0xFF}, // RGB332 = (2, 4, 3)
{0x48, 0xB4, 0x00, 0xFF}, // RGB332 = (2, 5, 0)
{0x48, 0xB4, 0x55, 0xFF}, // RGB332 = (2, 5, 1)
{0x48, 0xB4, 0xAA, 0xFF}, // RGB332 = (2, 5, 2)
{0x48, 0xB4, 0xFF, 0xFF}, // RGB332 = (2, 5, 3)
{0x48, 0xD8, 0x00, 0xFF}, // RGB332 = (2, 6, 0)
{0x48, 0xD8, 0x55, 0xFF}, // RGB332 = (2, 6, 1)
{0x48, 0xD8, 0xAA, 0xFF}, // RGB332 = (2, 6, 2)
{0x48, 0xD8, 0xFF, 0xFF}, // RGB332 = (2, 6, 3)
{0x48, 0xFC, 0x00, 0xFF}, // RGB332 = (2, 7, 0)
{0x48, 0xFC, 0xAA, 0xFF}, // RGB332 = (2, 7, 2)
{0x6C, 0x00, 0x00, 0xFF}, // RGB332 = (3, 0, 0)
{0x6C, 0x00, 0x55, 0xFF}, // RGB332 = (3, 0, 1)
{0x6C, 0x00, 0xAA, 0xFF}, // RGB332 = (3, 0, 2)
{0x6C, 0x00, 0xFF, 0xFF}, // RGB332 = (3, 0, 3)
{0x6C, 0x24, 0x00, 0xFF}, // RGB332 = (3, 1, 0)
{0x6C, 0x24, 0x55, 0xFF}, // RGB332 = (3, 1, 1)
{0x6C, 0x24, 0xAA, 0xFF}, // RGB332 = (3, 1, 2)
{0x6C, 0x24, 0xFF, 0xFF}, // RGB332 = (3, 1, 3)
{0x6C, 0x48, 0x00, 0xFF}, // RGB332 = (3, 2, 0)
{0x6C, 0x48, 0x55, 0xFF}, // RGB332 = (3, 2, 1)
{0x6C, 0x48, 0xAA, 0xFF}, // RGB332 = (3, 2, 2)
{0x6C, 0x48, 0xFF, 0xFF}, // RGB332 = (3, 2, 3)
{0x6C, 0x6C, 0x00, 0xFF}, // RGB332 = (3, 3, 0)
{0x6C, 0x6C, 0x55, 0xFF}, // RGB332 = (3, 3, 1)
{0x6C, 0x6C, 0xAA, 0xFF}, // RGB332 = (3, 3, 2)
{0x6C, 0x6C, 0xFF, 0xFF}, // RGB332 = (3, 3, 3)
{0x6C, 0x90, 0x00, 0xFF}, // RGB332 = (3, 4, 0)
{0x6C, 0x90, 0x55, 0xFF}, // RGB332 = (3, 4, 1)
{0x6C, 0x90, 0xAA, 0xFF}, // RGB332 = (3, 4, 2)
{0x6C, 0x90, 0xFF, 0xFF}, // RGB332 = (3, 4, 3)
{0x6C, 0xB4, 0x00, 0xFF}, // RGB332 = (3, 5, 0)
{0x6C, 0xB4, 0x55, 0xFF}, // RGB332 = (3, 5, 1)
{0x6C, 0xB4, 0xAA, 0xFF}, // RGB332 = (3, 5, 2)
{0x6C, 0xB4, 0xFF, 0xFF}, // RGB332 = (3, 5, 3)
{0x6C, 0xD8, 0x00, 0xFF}, // RGB332 = (3, 6, 0)
{0x6C, 0xD8, 0x55, 0xFF}, // RGB332 = (3, 6, 1)
{0x6C, 0xD8, 0xAA, 0xFF}, // RGB332 = (3, 6, 2)
{0x6C, 0xD8, 0xFF, 0xFF}, // RGB332 = (3, 6, 3)
{0x6C, 0xFC, 0x00, 0xFF}, // RGB332 = (3, 7, 0)
{0x6C, 0xFC, 0x55, 0xFF}, // RGB332 = (3, 7, 1)
{0x6C, 0xFC, 0xAA, 0xFF}, // RGB332 = (3, 7, 2)
{0x6C, 0xFC, 0xFF, 0xFF}, // RGB332 = (3, 7, 3)
{0x90, 0x00, 0x00, 0xFF}, // RGB332 = (4, 0, 0)
{0x90, 0x00, 0x55, 0xFF}, // RGB332 = (4, 0, 1)
{0x90, 0x00, 0xAA, 0xFF}, // RGB332 = (4, 0, 2)
{0x90, 0x00, 0xFF, 0xFF}, // RGB332 = (4, 0, 3)
{0x90, 0x24, 0x00, 0xFF}, // RGB332 = (4, 1, 0)
{0x90, 0x24, 0x55, 0xFF}, // RGB332 = (4, 1, 1)
{0x90, 0x24, 0xAA, 0xFF}, // RGB332 = (4, 1, 2)
{0x90, 0x24, 0xFF, 0xFF}, // RGB332 = (4, 1, 3)
{0x90, 0x48, 0x00, 0xFF}, // RGB332 = (4, 2, 0)
{0x90, 0x48, 0x55, 0xFF}, // RGB332 = (4, 2, 1)
{0x90, 0x48, 0xAA, 0xFF}, // RGB332 = (4, 2, 2)
{0x90, 0x48, 0xFF, 0xFF}, // RGB332 = (4, 2, 3)
{0x90, 0x6C, 0x00, 0xFF}, // RGB332 = (4, 3, 0)
{0x90, 0x6C, 0x55, 0xFF}, // RGB332 = (4, 3, 1)
{0x90, 0x6C, 0xAA, 0xFF}, // RGB332 = (4, 3, 2)
{0x90, 0x6C, 0xFF, 0xFF}, // RGB332 = (4, 3, 3)
{0x90, 0x90, 0x00, 0xFF}, // RGB332 = (4, 4, 0)
{0x90, 0x90, 0x55, 0xFF}, // RGB332 = (4, 4, 1)
{0x90, 0x90, 0xAA, 0xFF}, // RGB332 = (4, 4, 2)
{0x90, 0x90, 0xFF, 0xFF}, // RGB332 = (4, 4, 3)
{0x90, 0xB4, 0x00, 0xFF}, // RGB332 = (4, 5, 0)
{0x90, 0xB4, 0x55, 0xFF}, // RGB332 = (4, 5, 1)
{0x90, 0xB4, 0xAA, 0xFF}, // RGB332 = (4, 5, 2)
{0x90, 0xB4, 0xFF, 0xFF}, // RGB332 = (4, 5, 3)
{0x90, 0xD8, 0x00, 0xFF}, // RGB332 = (4, 6, 0)
{0x90, 0xD8, 0x55, 0xFF}, // RGB332 = (4, 6, 1)
{0x90, 0xD8, 0xAA, 0xFF}, // RGB332 = (4, 6, 2)
{0x90, 0xD8, 0xFF, 0xFF}, // RGB332 = (4, 6, 3)
{0x90, 0xFC, 0x00, 0xFF}, // RGB332 = (4, 7, 0)
{0x90, 0xFC, 0x55, 0xFF}, // RGB332 = (4, 7, 1)
{0x90, 0xFC, 0xAA, 0xFF}, // RGB332 = (4, 7, 2)
{0x90, 0xFC, 0xFF, 0xFF}, // RGB332 = (4, 7, 3)
{0xB4, 0x00, 0x55, 0xFF}, // RGB332 = (5, 0, 1)
{0xB4, 0x00, 0xFF, 0xFF}, // RGB332 = (5, 0, 3)
{0xB4, 0x24, 0x00, 0xFF}, // RGB332 = (5, 1, 0)
{0xB4, 0x24, 0x55, 0xFF}, // RGB332 = (5, 1, 1)
{0xB4, 0x24, 0xAA, 0xFF}, // RGB332 = (5, 1, 2)
{0xB4, 0x24, 0xFF, 0xFF}, // RGB332 = (5, 1, 3)
{0xB4, 0x48, 0x55, 0xFF}, // RGB332 = (5, 2, 1)
{0xB4, 0x48, 0xAA, 0xFF}, // RGB332 = (5, 2, 2)
{0xB4, 0x48, 0xFF, 0xFF}, // RGB332 = (5, 2, 3)
{0xB4, 0x6C, 0x00, 0xFF}, // RGB332 = (5, 3, 0)
{0xB4, 0x6C, 0x55, 0xFF}, // RGB332 = (5, 3, 1)
{0xB4, 0x6C, 0xAA, 0xFF}, // RGB332 = (5, 3, 2)
{0xB4, 0x6C, 0xFF, 0xFF}, // RGB332 = (5, 3, 3)
{0xB4, 0x90, 0x00, 0xFF}, // RGB332 = (5, 4, 0)
{0xB4, 0x90, 0x55, 0xFF}, // RGB332 = (5, 4, 1)
{0xB4, 0x90, 0xAA, 0xFF}, // RGB332 = (5, 4, 2)
{0xB4, 0x90, 0xFF, 0xFF}, // RGB332 = (5, 4, 3)
{0xB4, 0xB4, 0x00, 0xFF}, // RGB332 = (5, 5, 0)
{0xB4, 0xB4, 0x55, 0xFF}, // RGB332 = (5, 5, 1)
{0xB4, 0xB4, 0xFF, 0xFF}, // RGB332 = (5, 5, 3)
{0xB4, 0xD8, 0x00, 0xFF}, // RGB332 = (5, 6, 0)
{0xB4, 0xD8, 0x55, 0xFF}, // RGB332 = (5, 6, 1)
{0xB4, 0xD8, 0xAA, 0xFF}, // RGB332 = (5, 6, 2)
{0xB4, 0xD8, 0xFF, 0xFF}, // RGB332 = (5, 6, 3)
{0xB4, 0xFC, 0x00, 0xFF}, // RGB332 = (5, 7, 0)
{0xB4, 0xFC, 0x55, 0xFF}, // RGB332 = (5, 7, 1)
{0xB4, 0xFC, 0xAA, 0xFF}, // RGB332 = (5, 7, 2)
{0xB4, 0xFC, 0xFF, 0xFF}, // RGB332 = (5, 7, 3)
{0xD8, 0x00, 0x00, 0xFF}, // RGB332 = (6, 0, 0)
{0xD8, 0x00, 0x55, 0xFF}, // RGB332 = (6, 0, 1)
{0xD8, 0x00, 0xAA, 0xFF}, // RGB332 = (6, 0, 2)
{0xD8, 0x00, 0xFF, 0xFF}, // RGB332 = (6, 0, 3)
{0xD8, 0x24, 0x00, 0xFF}, // RGB332 = (6, 1, 0)
{0xD8, 0x24, 0x55, 0xFF}, // RGB332 = (6, 1, 1)
{0xD8, 0x24, 0xAA, 0xFF}, // RGB332 = (6, 1, 2)
{0xD8, 0x24, 0xFF, 0xFF}, // RGB332 = (6, 1, 3)
{0xD8, 0x48, 0x00, 0xFF}, // RGB332 = (6, 2, 0)
{0xD8, 0x48, 0x55, 0xFF}, // RGB332 = (6, 2, 1)
{0xD8, 0x48, 0xAA, 0xFF}, // RGB332 = (6, 2, 2)
{0xD8, 0x48, 0xFF, 0xFF}, // RGB332 = (6, 2, 3)
{0xD8, 0x6C, 0x00, 0xFF}, // RGB332 = (6, 3, 0)
{0xD8, 0x6C, 0x55, 0xFF}, // RGB332 = (6, 3, 1)
{0xD8, 0x6C, 0xAA, 0xFF}, // RGB332 = (6, 3, 2)
{0xD8, 0x6C, 0xFF, 0xFF}, // RGB332 = (6, 3, 3)
{0xD8, 0x90, 0x00, 0xFF}, // RGB332 = (6, 4, 0)
{0xD8, 0x90, 0x55, 0xFF}, // RGB332 = (6, 4, 1)
{0xD8, 0x90, 0xAA, 0xFF}, // RGB332 = (6, 4, 2)
{0xD8, 0x90, 0xFF, 0xFF}, // RGB332 = (6, 4, 3)
{0xD8, 0xB4, 0x00, 0xFF}, // RGB332 = (6, 5, 0)
{0xD8, 0xB4, 0x55, 0xFF}, // RGB332 = (6, 5, 1)
{0xD8, 0xB4, 0xAA, 0xFF}, // RGB332 = (6, 5, 2)
{0xD8, 0xB4, 0xFF, 0xFF}, // RGB332 = (6, 5, 3)
{0xD8, 0xD8, 0x00, 0xFF}, // RGB332 = (6, 6, 0)
{0xD8, 0xD8, 0x55, 0xFF}, // RGB332 = (6, 6, 1)
{0xD8, 0xD8, 0xAA, 0xFF}, // RGB332 = (6, 6, 2)
{0xD8, 0xD8, 0xFF, 0xFF}, // RGB332 = (6, 6, 3)
{0xD8, 0xFC, 0x00, 0xFF}, // RGB332 = (6, 7, 0)
{0xD8, 0xFC, 0x55, 0xFF}, // RGB332 = (6, 7, 1)
{0xD8, 0xFC, 0xAA, 0xFF}, // RGB332 = (6, 7, 2)
{0xD8, 0xFC, 0xFF, 0xFF}, // RGB332 = (6, 7, 3)
{0xFC, 0x00, 0x00, 0xFF}, // RGB332 = (7, 0, 0)
{0xFC, 0x00, 0x55, 0xFF}, // RGB332 = (7, 0, 1)
{0xFC, 0x00, 0xAA, 0xFF}, // RGB332 = (7, 0, 2)
{0xFC, 0x00, 0xFF, 0xFF}, // RGB332 = (7, 0, 3)
{0xFC, 0x24, 0x00, 0xFF}, // RGB332 = (7, 1, 0)
{0xFC, 0x24, 0x55, 0xFF}, // RGB332 = (7, 1, 1)
{0xFC, 0x24, 0xAA, 0xFF}, // RGB332 = (7, 1, 2)
{0xFC, 0x24, 0xFF, 0xFF}, // RGB332 = (7, 1, 3)
{0xFC, 0x48, 0x00, 0xFF}, // RGB332 = (7, 2, 0)
{0xFC, 0x48, 0xAA, 0xFF}, // RGB332 = (7, 2, 2)
{0xFC, 0x6C, 0x00, 0xFF}, // RGB332 = (7, 3, 0)
{0xFC, 0x6C, 0x55, 0xFF}, // RGB332 = (7, 3, 1)
{0xFC, 0x6C, 0xAA, 0xFF}, // RGB332 = (7, 3, 2)
{0xFC, 0x6C, 0xFF, 0xFF}, // RGB332 = (7, 3, 3)
{0xFC, 0x90, 0x00, 0xFF}, // RGB332 = (7, 4, 0)
{0xFC, 0x90, 0x55, 0xFF}, // RGB332 = (7, 4, 1)
{0xFC, 0x90, 0xAA, 0xFF}, // RGB332 = (7, 4, 2)
{0xFC, 0x90, 0xFF, 0xFF}, // RGB332 = (7, 4, 3)
{0xFC, 0xB4, 0x00, 0xFF}, // RGB332 = (7, 5, 0)
{0xFC, 0xB4, 0x55, 0xFF}, // RGB332 = (7, 5, 1)
{0xFC, 0xB4, 0xAA, 0xFF}, // RGB332 = (7, 5, 2)
{0xFC, 0xB4, 0xFF, 0xFF}, // RGB332 = (7, 5, 3)
{0xFC, 0xD8, 0x00, 0xFF}, // RGB332 = (7, 6, 0)
{0xFC, 0xD8, 0x55, 0xFF}, // RGB332 = (7, 6, 1)
{0xFC, 0xD8, 0xAA, 0xFF}, // RGB332 = (7, 6, 2)
{0xFC, 0xD8, 0xFF, 0xFF}, // RGB332 = (7, 6, 3)
{0xFC, 0xFC, 0x00, 0xFF}, // RGB332 = (7, 7, 0)
{0xFC, 0xFC, 0xAA, 0xFF}, // RGB332 = (7, 7, 2)
};
grub_err_t
grub_video_fb_init (void)
{
grub_free (framebuffer.palette);
framebuffer.render_target = 0;
framebuffer.back_target = 0;
framebuffer.palette = 0;
framebuffer.palette_size = 0;
framebuffer.set_page = 0;
return GRUB_ERR_NONE;
}
grub_err_t
grub_video_fb_fini (void)
{
/* TODO: destroy render targets. */
grub_free (framebuffer.offscreen_buffer);
grub_free (framebuffer.palette);
framebuffer.render_target = 0;
framebuffer.back_target = 0;
framebuffer.palette = 0;
framebuffer.palette_size = 0;
framebuffer.set_page = 0;
framebuffer.offscreen_buffer = 0;
return GRUB_ERR_NONE;
}
grub_err_t
grub_video_fb_get_info (struct grub_video_mode_info *mode_info)
{
/* Copy mode info from active render target. */
grub_memcpy (mode_info, &framebuffer.render_target->mode_info,
sizeof (struct grub_video_mode_info));
return GRUB_ERR_NONE;
}
grub_err_t
grub_video_fb_get_palette (unsigned int start, unsigned int count,
struct grub_video_palette_data *palette_data)
{
unsigned int i;
/* Assume that we know everything from index color palette. */
for (i = 0; (i < count) && ((i + start) < framebuffer.palette_size); i++)
palette_data[i] = framebuffer.palette[start + i];
return GRUB_ERR_NONE;
}
grub_err_t
grub_video_fb_set_palette (unsigned int start, unsigned int count,
struct grub_video_palette_data *palette_data)
{
unsigned i;
if (start + count > framebuffer.palette_size)
{
framebuffer.palette_size = start + count;
framebuffer.palette = grub_realloc (framebuffer.palette,
sizeof (framebuffer.palette[0])
* framebuffer.palette_size);
if (!framebuffer.palette)
{
grub_video_fb_fini ();
return grub_errno;
}
}
for (i = 0; (i < count) && ((i + start) < framebuffer.palette_size); i++)
framebuffer.palette[start + i] = palette_data[i];
return GRUB_ERR_NONE;
}
grub_err_t
grub_video_fb_set_viewport (unsigned int x, unsigned int y,
unsigned int width, unsigned int height)
{
/* Make sure viewport is withing screen dimensions. If viewport was set
to be out of the region, mark its size as zero. */
if (x > framebuffer.render_target->mode_info.width)
{
x = 0;
width = 0;
}
if (y > framebuffer.render_target->mode_info.height)
{
y = 0;
height = 0;
}
if (x + width > framebuffer.render_target->mode_info.width)
width = framebuffer.render_target->mode_info.width - x;
if (y + height > framebuffer.render_target->mode_info.height)
height = framebuffer.render_target->mode_info.height - y;
framebuffer.render_target->viewport.x = x;
framebuffer.render_target->viewport.y = y;
framebuffer.render_target->viewport.width = width;
framebuffer.render_target->viewport.height = height;
return GRUB_ERR_NONE;
}
grub_err_t
grub_video_fb_get_viewport (unsigned int *x, unsigned int *y,
unsigned int *width, unsigned int *height)
{
if (x) *x = framebuffer.render_target->viewport.x;
if (y) *y = framebuffer.render_target->viewport.y;
if (width) *width = framebuffer.render_target->viewport.width;
if (height) *height = framebuffer.render_target->viewport.height;
return GRUB_ERR_NONE;
}
/* Maps color name to target optimized color format. */
grub_video_color_t
grub_video_fb_map_color (grub_uint32_t color_name)
{
/* TODO: implement color theme mapping code. */
if (color_name < framebuffer.palette_size)
{
if ((framebuffer.render_target->mode_info.mode_type
& GRUB_VIDEO_MODE_TYPE_INDEX_COLOR) != 0)
return color_name;
else
{
grub_video_color_t color;
color = grub_video_fb_map_rgb (framebuffer.palette[color_name].r,
framebuffer.palette[color_name].g,
framebuffer.palette[color_name].b);
return color;
}
}
return 0;
}
/* Maps RGB to target optimized color format. */
grub_video_color_t
grub_video_fb_map_rgb (grub_uint8_t red, grub_uint8_t green,
grub_uint8_t blue)
{
if ((framebuffer.render_target->mode_info.mode_type
& GRUB_VIDEO_MODE_TYPE_INDEX_COLOR) != 0)
{
int minindex = 0;
int delta = 0;
int tmp;
int val;
unsigned i;
/* Find best matching color. */
for (i = 0; i < framebuffer.palette_size; i++)
{
val = framebuffer.palette[i].r - red;
tmp = val * val;
val = framebuffer.palette[i].g - green;
tmp += val * val;
val = framebuffer.palette[i].b - blue;
tmp += val * val;
if (i == 0)
delta = tmp;
if (tmp < delta)
{
delta = tmp;
minindex = i;
if (tmp == 0)
break;
}
}
return minindex;
}
else if ((framebuffer.render_target->mode_info.mode_type
& GRUB_VIDEO_MODE_TYPE_1BIT_BITMAP) != 0)
{
if (red == framebuffer.render_target->mode_info.fg_red
&& green == framebuffer.render_target->mode_info.fg_green
&& blue == framebuffer.render_target->mode_info.fg_blue)
return 1;
else
return 0;
}
else
{
grub_uint32_t value;
grub_uint8_t alpha = 255; /* Opaque color. */
red >>= 8 - framebuffer.render_target->mode_info.red_mask_size;
green >>= 8 - framebuffer.render_target->mode_info.green_mask_size;
blue >>= 8 - framebuffer.render_target->mode_info.blue_mask_size;
alpha >>= 8 - framebuffer.render_target->mode_info.reserved_mask_size;
value = red << framebuffer.render_target->mode_info.red_field_pos;
value |= green << framebuffer.render_target->mode_info.green_field_pos;
value |= blue << framebuffer.render_target->mode_info.blue_field_pos;
value |= alpha << framebuffer.render_target->mode_info.reserved_field_pos;
return value;
}
}
/* Maps RGBA to target optimized color format. */
grub_video_color_t
grub_video_fb_map_rgba (grub_uint8_t red, grub_uint8_t green,
grub_uint8_t blue, grub_uint8_t alpha)
{
if ((framebuffer.render_target->mode_info.mode_type
& GRUB_VIDEO_MODE_TYPE_INDEX_COLOR) != 0)
{
if ((framebuffer.render_target->mode_info.mode_type
& GRUB_VIDEO_MODE_TYPE_ALPHA) != 0
&& alpha == 0)
return 0xf0;
/* No alpha available in index color modes, just use
same value as in only RGB modes. */
return grub_video_fb_map_rgb (red, green, blue);
}
else if ((framebuffer.render_target->mode_info.mode_type
& GRUB_VIDEO_MODE_TYPE_1BIT_BITMAP) != 0)
{
if (red == framebuffer.render_target->mode_info.fg_red
&& green == framebuffer.render_target->mode_info.fg_green
&& blue == framebuffer.render_target->mode_info.fg_blue
&& alpha == framebuffer.render_target->mode_info.fg_alpha)
return 1;
else
return 0;
}
else
{
grub_uint32_t value;
red >>= 8 - framebuffer.render_target->mode_info.red_mask_size;
green >>= 8 - framebuffer.render_target->mode_info.green_mask_size;
blue >>= 8 - framebuffer.render_target->mode_info.blue_mask_size;
alpha >>= 8 - framebuffer.render_target->mode_info.reserved_mask_size;
value = red << framebuffer.render_target->mode_info.red_field_pos;
value |= green << framebuffer.render_target->mode_info.green_field_pos;
value |= blue << framebuffer.render_target->mode_info.blue_field_pos;
value |= alpha << framebuffer.render_target->mode_info.reserved_field_pos;
return value;
}
}
/* Splits target optimized format to components. */
grub_err_t
grub_video_fb_unmap_color (grub_video_color_t color,
grub_uint8_t *red, grub_uint8_t *green,
grub_uint8_t *blue, grub_uint8_t *alpha)
{
struct grub_video_fbblit_info target_info;
target_info.mode_info = &framebuffer.render_target->mode_info;
target_info.data = framebuffer.render_target->data;
grub_video_fb_unmap_color_int (&target_info, color, red, green, blue, alpha);
return GRUB_ERR_NONE;
}
/* Splits color in source format to components. */
void
grub_video_fb_unmap_color_int (struct grub_video_fbblit_info * source,
grub_video_color_t color,
grub_uint8_t *red, grub_uint8_t *green,
grub_uint8_t *blue, grub_uint8_t *alpha)
{
struct grub_video_mode_info *mode_info;
mode_info = source->mode_info;
if ((mode_info->mode_type
& GRUB_VIDEO_MODE_TYPE_INDEX_COLOR) != 0)
{
if ((framebuffer.render_target->mode_info.mode_type
& GRUB_VIDEO_MODE_TYPE_ALPHA) != 0
&& color == 0xf0)
{
*red = 0;
*green = 0;
*blue = 0;
*alpha = 0;
return;
}
/* If we have an out-of-bounds color, return transparent black. */
if (color > 255)
{
*red = 0;
*green = 0;
*blue = 0;
*alpha = 0;
return;
}
*red = framebuffer.palette[color].r;
*green = framebuffer.palette[color].g;
*blue = framebuffer.palette[color].b;
*alpha = framebuffer.palette[color].a;
return;
}
else if ((mode_info->mode_type
& GRUB_VIDEO_MODE_TYPE_1BIT_BITMAP) != 0)
{
if (color & 1)
{
*red = mode_info->fg_red;
*green = mode_info->fg_green;
*blue = mode_info->fg_blue;
*alpha = mode_info->fg_alpha;
}
else
{
*red = mode_info->bg_red;
*green = mode_info->bg_green;
*blue = mode_info->bg_blue;
*alpha = mode_info->bg_alpha;
}
}
else
{
grub_uint32_t tmp;
/* Get red component. */
tmp = color >> mode_info->red_field_pos;
tmp &= (1 << mode_info->red_mask_size) - 1;
tmp <<= 8 - mode_info->red_mask_size;
tmp |= (1 << (8 - mode_info->red_mask_size)) - 1;
*red = tmp & 0xFF;
/* Get green component. */
tmp = color >> mode_info->green_field_pos;
tmp &= (1 << mode_info->green_mask_size) - 1;
tmp <<= 8 - mode_info->green_mask_size;
tmp |= (1 << (8 - mode_info->green_mask_size)) - 1;
*green = tmp & 0xFF;
/* Get blue component. */
tmp = color >> mode_info->blue_field_pos;
tmp &= (1 << mode_info->blue_mask_size) - 1;
tmp <<= 8 - mode_info->blue_mask_size;
tmp |= (1 << (8 - mode_info->blue_mask_size)) - 1;
*blue = tmp & 0xFF;
/* Get alpha component. */
if (source->mode_info->reserved_mask_size > 0)
{
tmp = color >> mode_info->reserved_field_pos;
tmp &= (1 << mode_info->reserved_mask_size) - 1;
tmp <<= 8 - mode_info->reserved_mask_size;
tmp |= (1 << (8 - mode_info->reserved_mask_size)) - 1;
}
else
/* If there is no alpha component, assume it opaque. */
tmp = 255;
*alpha = tmp & 0xFF;
}
}
static void
dirty (int y, int height)
{
if (framebuffer.render_target != framebuffer.back_target)
return;
if (framebuffer.current_dirty.first_line > y)
framebuffer.current_dirty.first_line = y;
if (framebuffer.current_dirty.last_line < y + height)
framebuffer.current_dirty.last_line = y + height;
}
grub_err_t
grub_video_fb_fill_rect (grub_video_color_t color, int x, int y,
unsigned int width, unsigned int height)
{
struct grub_video_fbblit_info target;
/* Make sure there is something to do. */
if ((x >= (int)framebuffer.render_target->viewport.width) || (x + (int)width < 0))
return GRUB_ERR_NONE;
if ((y >= (int)framebuffer.render_target->viewport.height) || (y + (int)height < 0))
return GRUB_ERR_NONE;
/* Do not allow drawing out of viewport. */
if (x < 0)
{
width += x;
x = 0;
}
if (y < 0)
{
height += y;
y = 0;
}
if ((x + width) > framebuffer.render_target->viewport.width)
width = framebuffer.render_target->viewport.width - x;
if ((y + height) > framebuffer.render_target->viewport.height)
height = framebuffer.render_target->viewport.height - y;
/* Add viewport offset. */
x += framebuffer.render_target->viewport.x;
y += framebuffer.render_target->viewport.y;
dirty (y, height);
/* Use fbblit_info to encapsulate rendering. */
target.mode_info = &framebuffer.render_target->mode_info;
target.data = framebuffer.render_target->data;
grub_video_fb_fill_dispatch (&target, color, x, y,
width, height);
return GRUB_ERR_NONE;
}
grub_err_t
grub_video_fb_blit_bitmap (struct grub_video_bitmap *bitmap,
enum grub_video_blit_operators oper, int x, int y,
int offset_x, int offset_y,
unsigned int width, unsigned int height)
{
struct grub_video_fbblit_info source;
struct grub_video_fbblit_info target;
/* Make sure there is something to do. */
if ((width == 0) || (height == 0))
return GRUB_ERR_NONE;
if ((x >= (int)framebuffer.render_target->viewport.width) || (x + (int)width < 0))
return GRUB_ERR_NONE;
if ((y >= (int)framebuffer.render_target->viewport.height) || (y + (int)height < 0))
return GRUB_ERR_NONE;
if ((x + (int)bitmap->mode_info.width) < 0)
return GRUB_ERR_NONE;
if ((y + (int)bitmap->mode_info.height) < 0)
return GRUB_ERR_NONE;
if ((offset_x >= (int)bitmap->mode_info.width)
|| (offset_x + (int)width < 0))
return GRUB_ERR_NONE;
if ((offset_y >= (int)bitmap->mode_info.height)
|| (offset_y + (int)height < 0))
return GRUB_ERR_NONE;
/* If we have negative coordinates, optimize drawing to minimum. */
if (offset_x < 0)
{
width += offset_x;
x -= offset_x;
offset_x = 0;
}
if (offset_y < 0)
{
height += offset_y;
y -= offset_y;
offset_y = 0;
}
if (x < 0)
{
width += x;
offset_x -= x;
x = 0;
}
if (y < 0)
{
height += y;
offset_y -= y;
y = 0;
}
/* Do not allow drawing out of viewport. */
if ((x + width) > framebuffer.render_target->viewport.width)
width = framebuffer.render_target->viewport.width - x;
if ((y + height) > framebuffer.render_target->viewport.height)
height = framebuffer.render_target->viewport.height - y;
if ((offset_x + width) > bitmap->mode_info.width)
width = bitmap->mode_info.width - offset_x;
if ((offset_y + height) > bitmap->mode_info.height)
height = bitmap->mode_info.height - offset_y;
/* Limit drawing to source render target dimensions. */
if (width > bitmap->mode_info.width)
width = bitmap->mode_info.width;
if (height > bitmap->mode_info.height)
height = bitmap->mode_info.height;
/* Add viewport offset. */
x += framebuffer.render_target->viewport.x;
y += framebuffer.render_target->viewport.y;
/* Use fbblit_info to encapsulate rendering. */
source.mode_info = &bitmap->mode_info;
source.data = bitmap->data;
target.mode_info = &framebuffer.render_target->mode_info;
target.data = framebuffer.render_target->data;
/* Do actual blitting. */
dirty (y, height);
grub_video_fb_dispatch_blit (&target, &source, oper, x, y, width, height,
offset_x, offset_y);
return GRUB_ERR_NONE;
}
grub_err_t
grub_video_fb_blit_render_target (struct grub_video_fbrender_target *source,
enum grub_video_blit_operators oper,
int x, int y, int offset_x, int offset_y,
unsigned int width, unsigned int height)
{
struct grub_video_fbblit_info source_info;
struct grub_video_fbblit_info target_info;
/* Make sure there is something to do. */
if ((width == 0) || (height == 0))
return GRUB_ERR_NONE;
if ((x >= (int)framebuffer.render_target->viewport.width) || (x + (int)width < 0))
return GRUB_ERR_NONE;
if ((y >= (int)framebuffer.render_target->viewport.height) || (y + (int)height < 0))
return GRUB_ERR_NONE;
if ((x + (int)source->mode_info.width) < 0)
return GRUB_ERR_NONE;
if ((y + (int)source->mode_info.height) < 0)
return GRUB_ERR_NONE;
if ((offset_x >= (int)source->mode_info.width)
|| (offset_x + (int)width < 0))
return GRUB_ERR_NONE;
if ((offset_y >= (int)source->mode_info.height)
|| (offset_y + (int)height < 0))
return GRUB_ERR_NONE;
/* If we have negative coordinates, optimize drawing to minimum. */
if (offset_x < 0)
{
width += offset_x;
x -= offset_x;
offset_x = 0;
}
if (offset_y < 0)
{
height += offset_y;
y -= offset_y;
offset_y = 0;
}
if (x < 0)
{
width += x;
offset_x -= x;
x = 0;
}
if (y < 0)
{
height += y;
offset_y -= y;
y = 0;
}
/* Do not allow drawing out of viewport. */
if ((x + width) > framebuffer.render_target->viewport.width)
width = framebuffer.render_target->viewport.width - x;
if ((y + height) > framebuffer.render_target->viewport.height)
height = framebuffer.render_target->viewport.height - y;
if ((offset_x + width) > source->mode_info.width)
width = source->mode_info.width - offset_x;
if ((offset_y + height) > source->mode_info.height)
height = source->mode_info.height - offset_y;
/* Limit drawing to source render target dimensions. */
if (width > source->mode_info.width)
width = source->mode_info.width;
if (height > source->mode_info.height)
height = source->mode_info.height;
/* Add viewport offset. */
x += framebuffer.render_target->viewport.x;
y += framebuffer.render_target->viewport.y;
/* Use fbblit_info to encapsulate rendering. */
source_info.mode_info = &source->mode_info;
source_info.data = source->data;
target_info.mode_info = &framebuffer.render_target->mode_info;
target_info.data = framebuffer.render_target->data;
/* Do actual blitting. */
dirty (y, height);
grub_video_fb_dispatch_blit (&target_info, &source_info, oper, x, y, width, height,
offset_x, offset_y);
return GRUB_ERR_NONE;
}
grub_err_t
grub_video_fb_scroll (grub_video_color_t color, int dx, int dy)
{
int width;
int height;
int src_x;
int src_y;
int dst_x;
int dst_y;
/* 1. Check if we have something to do. */
if ((dx == 0) && (dy == 0))
return GRUB_ERR_NONE;
width = framebuffer.render_target->viewport.width - grub_abs (dx);
height = framebuffer.render_target->viewport.height - grub_abs (dy);
dirty (framebuffer.render_target->viewport.y,
framebuffer.render_target->viewport.height);
if (dx < 0)
{
src_x = framebuffer.render_target->viewport.x - dx;
dst_x = framebuffer.render_target->viewport.x;
}
else
{
src_x = framebuffer.render_target->viewport.x;
dst_x = framebuffer.render_target->viewport.x + dx;
}
if (dy < 0)
{
src_y = framebuffer.render_target->viewport.y - dy;
dst_y = framebuffer.render_target->viewport.y;
}
else
{
src_y = framebuffer.render_target->viewport.y;
dst_y = framebuffer.render_target->viewport.y + dy;
}
/* 2. Check if there is need to copy data. */
if ((grub_abs (dx) < framebuffer.render_target->viewport.width)
&& (grub_abs (dy) < framebuffer.render_target->viewport.height))
{
/* 3. Move data in render target. */
struct grub_video_fbblit_info target;
int i, j;
int linedelta, linelen;
target.mode_info = &framebuffer.render_target->mode_info;
target.data = framebuffer.render_target->data;
linedelta = target.mode_info->pitch
- width * target.mode_info->bytes_per_pixel;
linelen = width * target.mode_info->bytes_per_pixel;
#define DO_SCROLL \
/* Check vertical direction of the move. */ \
if (dy < 0 || (dy == 0 && dx < 0)) \
{ \
dst = (void *) grub_video_fb_get_video_ptr (&target, \
dst_x, dst_y); \
src = (void *) grub_video_fb_get_video_ptr (&target, \
src_x, src_y); \
/* 3a. Move data upwards. */ \
for (j = 0; j < height; j++) \
{ \
for (i = 0; i < linelen; i++) \
*(dst++) = *(src++); \
dst += linedelta; \
src += linedelta; \
} \
} \
else \
{ \
/* 3b. Move data downwards. */ \
dst = (void *) grub_video_fb_get_video_ptr (&target, \
dst_x + width, \
dst_y + height - 1); \
src = (void *) grub_video_fb_get_video_ptr (&target, \
src_x + width, \
src_y + height - 1); \
dst--; \
src--; \
for (j = 0; j < height; j++) \
{ \
for (i = 0; i < linelen; i++) \
*(dst--) = *(src--); \
dst -= linedelta; \
src -= linedelta; \
} \
}
/* If everything is aligned on 32-bit use 32-bit copy. */
if ((grub_addr_t) grub_video_fb_get_video_ptr (&target, src_x, src_y)
% sizeof (grub_uint32_t) == 0
&& (grub_addr_t) grub_video_fb_get_video_ptr (&target, dst_x, dst_y)
% sizeof (grub_uint32_t) == 0
&& linelen % sizeof (grub_uint32_t) == 0
&& linedelta % sizeof (grub_uint32_t) == 0)
{
grub_uint32_t *src, *dst;
linelen /= sizeof (grub_uint32_t);
linedelta /= sizeof (grub_uint32_t);
DO_SCROLL
}
/* If everything is aligned on 16-bit use 16-bit copy. */
else if ((grub_addr_t) grub_video_fb_get_video_ptr (&target, src_x, src_y)
% sizeof (grub_uint16_t) == 0
&& (grub_addr_t) grub_video_fb_get_video_ptr (&target,
dst_x, dst_y)
% sizeof (grub_uint16_t) == 0
&& linelen % sizeof (grub_uint16_t) == 0
&& linedelta % sizeof (grub_uint16_t) == 0)
{
grub_uint16_t *src, *dst;
linelen /= sizeof (grub_uint16_t);
linedelta /= sizeof (grub_uint16_t);
DO_SCROLL
}
/* If not aligned at all use 8-bit copy. */
else
{
grub_uint8_t *src, *dst;
DO_SCROLL
}
}
/* 4. Fill empty space with specified color. In this implementation
there might be colliding areas but at the moment there is no need
to optimize this. */
/* 4a. Fill top & bottom parts. */
if (dy > 0)
grub_video_fb_fill_rect (color, 0, 0, framebuffer.render_target->viewport.width, dy);
else if (dy < 0)
{
if (framebuffer.render_target->viewport.height < grub_abs (dy))
dy = -framebuffer.render_target->viewport.height;
grub_video_fb_fill_rect (color, 0, framebuffer.render_target->viewport.height + dy,
framebuffer.render_target->viewport.width, -dy);
}
/* 4b. Fill left & right parts. */
if (dx > 0)
grub_video_fb_fill_rect (color, 0, 0,
dx, framebuffer.render_target->viewport.height);
else if (dx < 0)
{
if (framebuffer.render_target->viewport.width < grub_abs (dx))
dx = -framebuffer.render_target->viewport.width;
grub_video_fb_fill_rect (color, framebuffer.render_target->viewport.width + dx, 0,
-dx, framebuffer.render_target->viewport.height);
}
return GRUB_ERR_NONE;
}
grub_err_t
grub_video_fb_create_render_target (struct grub_video_fbrender_target **result,
unsigned int width, unsigned int height,
unsigned int mode_type __attribute__ ((unused)))
{
struct grub_video_fbrender_target *target;
unsigned int size;
/* Validate arguments. */
if ((! result)
|| (width == 0)
|| (height == 0))
return grub_error (GRUB_ERR_BUG,
"invalid argument given");
/* Allocate memory for render target. */
target = grub_malloc (sizeof (struct grub_video_fbrender_target));
if (! target)
return grub_errno;
/* TODO: Implement other types too.
Currently only 32bit render targets are supported. */
/* Mark render target as allocated. */
target->is_allocated = 1;
/* Maximize viewport. */
target->viewport.x = 0;
target->viewport.y = 0;
target->viewport.width = width;
target->viewport.height = height;
/* Setup render target format. */
target->mode_info.width = width;
target->mode_info.height = height;
switch (mode_type)
{
case GRUB_VIDEO_MODE_TYPE_INDEX_COLOR
| GRUB_VIDEO_MODE_TYPE_ALPHA:
target->mode_info.mode_type = GRUB_VIDEO_MODE_TYPE_INDEX_COLOR
| GRUB_VIDEO_MODE_TYPE_ALPHA;
target->mode_info.bpp = 8;
target->mode_info.bytes_per_pixel = 1;
target->mode_info.number_of_colors = 16;
target->mode_info.blit_format = GRUB_VIDEO_BLIT_FORMAT_INDEXCOLOR_ALPHA;
break;
default:
target->mode_info.mode_type = GRUB_VIDEO_MODE_TYPE_RGB
| GRUB_VIDEO_MODE_TYPE_ALPHA;
target->mode_info.bpp = 32;
target->mode_info.bytes_per_pixel = 4;
target->mode_info.red_mask_size = 8;
target->mode_info.red_field_pos = 0;
target->mode_info.green_mask_size = 8;
target->mode_info.green_field_pos = 8;
target->mode_info.blue_mask_size = 8;
target->mode_info.blue_field_pos = 16;
target->mode_info.reserved_mask_size = 8;
target->mode_info.reserved_field_pos = 24;
target->mode_info.number_of_colors = framebuffer.palette_size; /* Emulated palette. */
target->mode_info.blit_format = GRUB_VIDEO_BLIT_FORMAT_RGBA_8888;
break;
}
target->mode_info.pitch = target->mode_info.bytes_per_pixel * width;
/* Calculate size needed for the data. */
size = (width * target->mode_info.bytes_per_pixel) * height;
target->data = grub_malloc (size);
if (! target->data)
{
grub_free (target);
return grub_errno;
}
/* Clear render target with black and maximum transparency. */
if (mode_type == (GRUB_VIDEO_MODE_TYPE_INDEX_COLOR
| GRUB_VIDEO_MODE_TYPE_ALPHA))
grub_memset (target->data, 0xf0, size);
else
grub_memset (target->data, 0, size);
/* TODO: Add render target to render target list. */
/* Save result to caller. */
*result = target;
return GRUB_ERR_NONE;
}
grub_err_t
grub_video_fb_create_render_target_from_pointer (struct grub_video_fbrender_target **result,
const struct grub_video_mode_info *mode_info,
void *ptr)
{
struct grub_video_fbrender_target *target;
unsigned y;
#ifndef GRUB_HAVE_UNALIGNED_ACCESS
if (!(mode_info->bytes_per_pixel & (mode_info->bytes_per_pixel - 1))
&& ((grub_addr_t) ptr & (mode_info->bytes_per_pixel - 1)))
return grub_error (GRUB_ERR_BAD_ARGUMENT, "unaligned pointer");
if (!(mode_info->bytes_per_pixel & (mode_info->bytes_per_pixel - 1))
&& (mode_info->pitch & (mode_info->bytes_per_pixel - 1)))
return grub_error (GRUB_ERR_BAD_ARGUMENT, "unaligned pitch");
#endif
/* Allocate memory for render target. */
target = grub_malloc (sizeof (struct grub_video_fbrender_target));
if (! target)
return grub_errno;
/* Mark framebuffer memory as non allocated. */
target->is_allocated = 0;
target->data = ptr;
grub_memcpy (&(target->mode_info), mode_info, sizeof (target->mode_info));
/* Reset viewport to match new mode. */
target->viewport.x = 0;
target->viewport.y = 0;
target->viewport.width = mode_info->width;
target->viewport.height = mode_info->height;
/* Clear render target with black and maximum transparency. */
for (y = 0; y < mode_info->height; y++)
grub_memset (target->data + mode_info->pitch * y, 0,
mode_info->bytes_per_pixel * mode_info->width);
/* Save result to caller. */
*result = target;
return GRUB_ERR_NONE;
}
grub_err_t
grub_video_fb_delete_render_target (struct grub_video_fbrender_target *target)
{
/* If there is no target, then just return without error. */
if (! target)
return GRUB_ERR_NONE;
/* TODO: Delist render target from render target list. */
/* If this is software render target, free it's memory. */
if (target->is_allocated)
grub_free (target->data);
/* Free render target. */
grub_free (target);
return GRUB_ERR_NONE;
}
grub_err_t
grub_video_fb_set_active_render_target (struct grub_video_fbrender_target *target)
{
if (target == (struct grub_video_fbrender_target *)
GRUB_VIDEO_RENDER_TARGET_DISPLAY)
target = framebuffer.back_target;
if (! target->data)
return grub_error (GRUB_ERR_BUG,
"invalid render target given");
framebuffer.render_target = target;
return GRUB_ERR_NONE;
}
grub_err_t
grub_video_fb_get_active_render_target (struct grub_video_fbrender_target **target)
{
*target = framebuffer.render_target;
if (*target == framebuffer.back_target)
*target = (struct grub_video_fbrender_target *) GRUB_VIDEO_RENDER_TARGET_DISPLAY;
return GRUB_ERR_NONE;
}
static grub_err_t
doublebuf_blit_update_screen (void)
{
if (framebuffer.current_dirty.first_line
<= framebuffer.current_dirty.last_line)
grub_memcpy ((char *) framebuffer.pages[0]
+ framebuffer.current_dirty.first_line
* framebuffer.back_target->mode_info.pitch,
(char *) framebuffer.back_target->data
+ framebuffer.current_dirty.first_line
* framebuffer.back_target->mode_info.pitch,
framebuffer.back_target->mode_info.pitch
* (framebuffer.current_dirty.last_line
- framebuffer.current_dirty.first_line));
framebuffer.current_dirty.first_line
= framebuffer.back_target->mode_info.height;
framebuffer.current_dirty.last_line = 0;
return GRUB_ERR_NONE;
}
static grub_err_t
grub_video_fb_doublebuf_blit_init (struct grub_video_fbrender_target **back,
struct grub_video_mode_info mode_info,
volatile void *framebuf)
{
grub_err_t err;
grub_size_t page_size = mode_info.pitch * mode_info.height;
framebuffer.offscreen_buffer = grub_zalloc (page_size);
if (! framebuffer.offscreen_buffer)
return grub_errno;
err = grub_video_fb_create_render_target_from_pointer (&framebuffer.back_target,
&mode_info,
framebuffer.offscreen_buffer);
if (err)
{
grub_free (framebuffer.offscreen_buffer);
framebuffer.offscreen_buffer = 0;
return grub_errno;
}
(*back)->is_allocated = 1;
framebuffer.update_screen = doublebuf_blit_update_screen;
framebuffer.pages[0] = framebuf;
framebuffer.displayed_page = 0;
framebuffer.render_page = 0;
framebuffer.current_dirty.first_line = mode_info.height;
framebuffer.current_dirty.last_line = 0;
return GRUB_ERR_NONE;
}
static grub_err_t
doublebuf_pageflipping_update_screen (void)
{
int new_displayed_page;
grub_err_t err;
int first_line, last_line;
first_line = framebuffer.current_dirty.first_line;
last_line = framebuffer.current_dirty.last_line;
if (first_line > framebuffer.previous_dirty.first_line)
first_line = framebuffer.previous_dirty.first_line;
if (last_line < framebuffer.previous_dirty.last_line)
last_line = framebuffer.previous_dirty.last_line;
if (first_line <= last_line)
grub_memcpy ((char *) framebuffer.pages[framebuffer.render_page]
+ first_line * framebuffer.back_target->mode_info.pitch,
(char *) framebuffer.back_target->data
+ first_line * framebuffer.back_target->mode_info.pitch,
framebuffer.back_target->mode_info.pitch
* (last_line - first_line));
framebuffer.previous_dirty = framebuffer.current_dirty;
framebuffer.current_dirty.first_line
= framebuffer.back_target->mode_info.height;
framebuffer.current_dirty.last_line = 0;
/* Swap the page numbers in the framebuffer struct. */
new_displayed_page = framebuffer.render_page;
framebuffer.render_page = framebuffer.displayed_page;
framebuffer.displayed_page = new_displayed_page;
err = framebuffer.set_page (framebuffer.displayed_page);
if (err)
{
/* Restore previous state. */
framebuffer.render_page = framebuffer.displayed_page;
framebuffer.displayed_page = new_displayed_page;
return err;
}
return GRUB_ERR_NONE;
}
static grub_err_t
doublebuf_pageflipping_init (struct grub_video_mode_info *mode_info,
volatile void *page0_ptr,
grub_video_fb_set_page_t set_page_in,
volatile void *page1_ptr)
{
grub_err_t err;
grub_size_t page_size = mode_info->pitch * mode_info->height;
framebuffer.offscreen_buffer = grub_malloc (page_size);
if (! framebuffer.offscreen_buffer)
{
return grub_errno;
}
err = grub_video_fb_create_render_target_from_pointer (&framebuffer.back_target,
mode_info,
framebuffer.offscreen_buffer);
if (err)
{
grub_free (framebuffer.offscreen_buffer);
framebuffer.offscreen_buffer = 0;
return grub_errno;
}
framebuffer.back_target->is_allocated = 1;
framebuffer.displayed_page = 0;
framebuffer.render_page = 1;
framebuffer.update_screen = doublebuf_pageflipping_update_screen;
framebuffer.pages[0] = page0_ptr;
framebuffer.pages[1] = page1_ptr;
framebuffer.current_dirty.first_line
= framebuffer.back_target->mode_info.height;
framebuffer.current_dirty.last_line = 0;
framebuffer.previous_dirty.first_line
= framebuffer.back_target->mode_info.height;
framebuffer.previous_dirty.last_line = 0;
/* Set the framebuffer memory data pointer and display the right page. */
err = set_page_in (framebuffer.displayed_page);
if (err)
{
grub_video_fb_delete_render_target (framebuffer.back_target);
return err;
}
framebuffer.set_page = set_page_in;
return GRUB_ERR_NONE;
}
/* Select the best double buffering mode available. */
grub_err_t
grub_video_fb_setup (unsigned int mode_type, unsigned int mode_mask,
struct grub_video_mode_info *mode_info,
volatile void *page0_ptr,
grub_video_fb_set_page_t set_page_in,
volatile void *page1_ptr)
{
grub_err_t err;
/* Do double buffering only if it's either requested or efficient. */
if (set_page_in && grub_video_check_mode_flag (mode_type, mode_mask,
GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED,
1))
{
mode_info->mode_type |= GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED;
mode_info->mode_type |= GRUB_VIDEO_MODE_TYPE_UPDATING_SWAP;
err = doublebuf_pageflipping_init (mode_info, page0_ptr,
set_page_in,
page1_ptr);
if (!err)
{
framebuffer.render_target = framebuffer.back_target;
return GRUB_ERR_NONE;
}
mode_info->mode_type &= ~(GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED
| GRUB_VIDEO_MODE_TYPE_UPDATING_SWAP);
grub_errno = GRUB_ERR_NONE;
}
if (grub_video_check_mode_flag (mode_type, mode_mask,
GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED,
1))
{
/* It was much nicer with the cast directly at function call but
some older gcc versions don't accept it properly.*/
void *tmp = (void *) page0_ptr;
mode_info->mode_type |= (GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED
| GRUB_VIDEO_MODE_TYPE_UPDATING_SWAP);
err = grub_video_fb_doublebuf_blit_init (&framebuffer.back_target,
*mode_info,
tmp);
if (!err)
{
framebuffer.render_target = framebuffer.back_target;
return GRUB_ERR_NONE;
}
mode_info->mode_type &= ~(GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED
| GRUB_VIDEO_MODE_TYPE_UPDATING_SWAP);
grub_errno = GRUB_ERR_NONE;
}
/* Fall back to no double buffering. */
err = grub_video_fb_create_render_target_from_pointer (&framebuffer.back_target,
mode_info,
(void *) page0_ptr);
if (err)
return err;
framebuffer.update_screen = 0;
framebuffer.pages[0] = page0_ptr;
framebuffer.displayed_page = 0;
framebuffer.render_page = 0;
framebuffer.set_page = 0;
framebuffer.current_dirty.first_line
= framebuffer.back_target->mode_info.height;
framebuffer.current_dirty.last_line = 0;
mode_info->mode_type &= ~GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED;
framebuffer.render_target = framebuffer.back_target;
return GRUB_ERR_NONE;
}
grub_err_t
grub_video_fb_swap_buffers (void)
{
grub_err_t err;
if (!framebuffer.update_screen)
return GRUB_ERR_NONE;
err = framebuffer.update_screen ();
if (err)
return err;
return GRUB_ERR_NONE;
}
grub_err_t
grub_video_fb_get_info_and_fini (struct grub_video_mode_info *mode_info,
void **framebuf)
{
grub_memcpy (mode_info, &(framebuffer.back_target->mode_info),
sizeof (*mode_info));
/* We are about to load a kernel. Switch back to page zero, since some
kernel drivers expect that. */
if (framebuffer.set_page && framebuffer.displayed_page != 0)
{
framebuffer.update_screen ();
}
*framebuf = (void *) framebuffer.pages[framebuffer.displayed_page];
grub_video_fb_fini ();
return GRUB_ERR_NONE;
}