123 lines
3.7 KiB
C
123 lines
3.7 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2006 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* SPECIAL NOTES!
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Please note following when reading the code below:
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- In this driver we assume that every memory can be accessed by same memory
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bus. If there are different address spaces do not use this code as a base
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code for other archs.
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- Every function in this code assumes that bounds checking has been done in
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previous phase and they are opted out in here. */
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#include <grub/machine/vbe.h>
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#include <grub/machine/vbefill.h>
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#include <grub/machine/vbeutil.h>
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#include <grub/types.h>
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#include <grub/video.h>
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void
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grub_video_i386_vbefill_R8G8B8A8 (struct grub_video_i386_vbeblit_info *dst,
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grub_video_color_t color, int x, int y,
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int width, int height)
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{
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int i;
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int j;
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grub_uint32_t *dstptr;
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/* We do not need to worry about data being out of bounds
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as we assume that everything has been checked before. */
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for (j = 0; j < height; j++)
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{
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dstptr = (grub_uint32_t *)grub_video_vbe_get_video_ptr (dst, x, y + j);
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for (i = 0; i < width; i++)
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*dstptr++ = color;
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}
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}
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void
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grub_video_i386_vbefill_R8G8B8 (struct grub_video_i386_vbeblit_info *dst,
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grub_video_color_t color, int x, int y,
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int width, int height)
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{
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int i;
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int j;
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grub_uint8_t *dstptr;
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grub_uint8_t fillr = (grub_uint8_t)((color >> 0) & 0xFF);
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grub_uint8_t fillg = (grub_uint8_t)((color >> 8) & 0xFF);
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grub_uint8_t fillb = (grub_uint8_t)((color >> 16) & 0xFF);
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/* We do not need to worry about data being out of bounds
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as we assume that everything has been checked before. */
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for (j = 0; j < height; j++)
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{
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dstptr = (grub_uint8_t *)grub_video_vbe_get_video_ptr (dst, x, y + j);
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for (i = 0; i < width; i++)
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{
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*dstptr++ = fillr;
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*dstptr++ = fillg;
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*dstptr++ = fillb;
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}
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}
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}
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void
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grub_video_i386_vbefill_index (struct grub_video_i386_vbeblit_info *dst,
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grub_video_color_t color, int x, int y,
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int width, int height)
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{
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int i;
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int j;
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grub_uint8_t *dstptr;
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grub_uint8_t fill = (grub_uint8_t)color & 0xFF;
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/* We do not need to worry about data being out of bounds
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as we assume that everything has been checked before. */
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for (j = 0; j < height; j++)
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{
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dstptr = (grub_uint8_t *)grub_video_vbe_get_video_ptr (dst, x, y + j);
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for (i = 0; i < width; i++)
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*dstptr++ = fill;
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}
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}
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void
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grub_video_i386_vbefill (struct grub_video_i386_vbeblit_info *dst,
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grub_video_color_t color, int x, int y,
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int width, int height)
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{
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int i;
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int j;
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/* We do not need to worry about data being out of bounds
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as we assume that everything has been checked before. */
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for (j = 0; j < height; j++)
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for (i = 0; i < width; i++)
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set_pixel (dst, x+i, y+j, color);
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}
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