2
* GRUB -- GRand Unified Bootloader
3
* Copyright (C) 2006,2007,2008 Free Software Foundation, Inc.
5
* GRUB is free software: you can redistribute it and/or modify
6
* it under the terms of the GNU General Public License as published by
7
* the Free Software Foundation, either version 3 of the License, or
8
* (at your option) any later version.
10
* GRUB is distributed in the hope that it will be useful,
11
* but WITHOUT ANY WARRANTY; without even the implied warranty of
12
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13
* GNU General Public License for more details.
15
* You should have received a copy of the GNU General Public License
16
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
21
Please note following when reading the code below:
23
- In this driver we assume that every memory can be accessed by same memory
24
bus. If there are different address spaces do not use this code as a base
27
- Every function in this code assumes that bounds checking has been done in
28
previous phase and they are opted out in here. */
30
#include <grub/video_fb.h>
31
#include <grub/fbfill.h>
32
#include <grub/fbutil.h>
33
#include <grub/types.h>
34
#include <grub/video.h>
36
/* Generic filler that works for every supported mode. */
38
grub_video_fbfill (struct grub_video_fbblit_info *dst,
39
grub_video_color_t color, int x, int y,
40
int width, int height)
45
for (j = 0; j < height; j++)
46
for (i = 0; i < width; i++)
47
set_pixel (dst, x + i, y + j, color);
50
/* Optimized filler for direct color 32 bit modes. It is assumed that color
51
is already mapped to destination format. */
53
grub_video_fbfill_direct32 (struct grub_video_fbblit_info *dst,
54
grub_video_color_t color, int x, int y,
55
int width, int height)
59
grub_uint32_t *dstptr;
62
/* Calculate the number of bytes to advance from the end of one line
63
to the beginning of the next line. */
64
rowskip = dst->mode_info->pitch - dst->mode_info->bytes_per_pixel * width;
66
/* Get the start address. */
67
dstptr = (grub_uint32_t *) grub_video_fb_get_video_ptr (dst, x, y);
69
for (j = 0; j < height; j++)
71
for (i = 0; i < width; i++)
74
/* Advance the dest pointer to the right location on the next line. */
75
dstptr = (grub_uint32_t *) (((char *) dstptr) + rowskip);
79
/* Optimized filler for direct color 24 bit modes. It is assumed that color
80
is already mapped to destination format. */
82
grub_video_fbfill_direct24 (struct grub_video_fbblit_info *dst,
83
grub_video_color_t color, int x, int y,
84
int width, int height)
90
grub_uint8_t fill0 = (grub_uint8_t)((color >> 0) & 0xFF);
91
grub_uint8_t fill1 = (grub_uint8_t)((color >> 8) & 0xFF);
92
grub_uint8_t fill2 = (grub_uint8_t)((color >> 16) & 0xFF);
94
/* Calculate the number of bytes to advance from the end of one line
95
to the beginning of the next line. */
96
rowskip = dst->mode_info->pitch - dst->mode_info->bytes_per_pixel * width;
98
/* Get the start address. */
99
dstptr = (grub_uint8_t *) grub_video_fb_get_video_ptr (dst, x, y);
101
for (j = 0; j < height; j++)
103
for (i = 0; i < width; i++)
110
/* Advance the dest pointer to the right location on the next line. */
115
/* Optimized filler for direct color 16 bit modes. It is assumed that color
116
is already mapped to destination format. */
118
grub_video_fbfill_direct16 (struct grub_video_fbblit_info *dst,
119
grub_video_color_t color, int x, int y,
120
int width, int height)
125
grub_uint8_t *dstptr;
126
grub_uint8_t fill0 = (grub_uint8_t)((color >> 0) & 0xFF);
127
grub_uint8_t fill1 = (grub_uint8_t)((color >> 8) & 0xFF);
129
/* Calculate the number of bytes to advance from the end of one line
130
to the beginning of the next line. */
131
rowskip = dst->mode_info->pitch - dst->mode_info->bytes_per_pixel * width;
133
/* Get the start address. */
134
dstptr = (grub_uint8_t *) grub_video_fb_get_video_ptr (dst, x, y);
136
for (j = 0; j < height; j++)
138
for (i = 0; i < width; i++)
144
/* Advance the dest pointer to the right location on the next line. */
149
/* Optimized filler for index color. It is assumed that color
150
is already mapped to destination format. */
152
grub_video_fbfill_direct8 (struct grub_video_fbblit_info *dst,
153
grub_video_color_t color, int x, int y,
154
int width, int height)
159
grub_uint8_t *dstptr;
160
grub_uint8_t fill = (grub_uint8_t)color & 0xFF;
162
/* Calculate the number of bytes to advance from the end of one line
163
to the beginning of the next line. */
164
rowskip = dst->mode_info->pitch - dst->mode_info->bytes_per_pixel * width;
166
/* Get the start address. */
167
dstptr = (grub_uint8_t *) grub_video_fb_get_video_ptr (dst, x, y);
169
for (j = 0; j < height; j++)
171
for (i = 0; i < width; i++)
174
/* Advance the dest pointer to the right location on the next line. */
added
removed
video/fb/fbfill.c
