mirror of
https://github.com/freebsd/freebsd-src
synced 2024-07-21 02:06:37 +00:00
aa1ce985e4
depths for the source and target are not supported. The bits for higher numbered planes (mostly for red) were either not copied or were copied to lower numbered planes for nearby pixels. Quick fix for creation of mouse cursor bitmaps in all depths. This fix is only complete for the default lightwhite cursor with a black frame. Even the lightwhite and black colors are hard to find. The templates use 0xff for lightwhite, but that means brightblue in the simplest mode (Truecolor depth 24). Other modes are even more complicated -- they are singly or doubly indirect throught palette(s) and changing of the palettes by applications is supported. Details: Replicate the template value for Truecolor modes to fill out the target depth (and more for depths not a multiple of 8). Do this for every drawing of the cursor so that it sort of works for mouse cursor bitmaps set by applications. Use 0xf for lightwhite in most other modes. Only do this for the default cursor so that it doesn't affect mouse cursor bitmaps set by applications. 0xf mostly works because it was originally for CGA lightwhite and is emulated using 1 or 2 indirections on EGA and VGA. 0x3f (EGA white) and 0xff (VGA black) direct palette indexes mostly don't work since backwards compatibility inhibits or prevents them representing lightwhite. But 0x3f (EGA white) must be used for mode 37 (VGA_MODEX) (320x240x8 V) since this mode is closer to EGA than VGA.
410 lines
12 KiB
C
410 lines
12 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1991-1997 Søren Schmidt
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <signal.h>
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#include <sys/fbio.h>
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#include "vgl.h"
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#define min(x, y) (((x) < (y)) ? (x) : (y))
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static byte mask[8] = {0xff, 0x7f, 0x3f, 0x1f, 0x0f, 0x07, 0x03, 0x01};
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static int color2bit[16] = {0x00000000, 0x00000001, 0x00000100, 0x00000101,
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0x00010000, 0x00010001, 0x00010100, 0x00010101,
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0x01000000, 0x01000001, 0x01000100, 0x01000101,
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0x01010000, 0x01010001, 0x01010100, 0x01010101};
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static void
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WriteVerticalLine(VGLBitmap *dst, int x, int y, int width, byte *line)
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{
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int i, pos, last, planepos, start_offset, end_offset, offset;
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int len;
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unsigned int word = 0;
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byte *address;
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byte *VGLPlane[4];
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switch (dst->Type) {
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case VIDBUF4:
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case VIDBUF4S:
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start_offset = (x & 0x07);
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end_offset = (x + width) & 0x07;
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i = (width + start_offset) / 8;
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if (end_offset)
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i++;
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VGLPlane[0] = VGLBuf;
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VGLPlane[1] = VGLPlane[0] + i;
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VGLPlane[2] = VGLPlane[1] + i;
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VGLPlane[3] = VGLPlane[2] + i;
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pos = 0;
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planepos = 0;
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last = 8 - start_offset;
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while (pos < width) {
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word = 0;
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while (pos < last && pos < width)
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word = (word<<1) | color2bit[line[pos++]&0x0f];
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VGLPlane[0][planepos] = word;
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VGLPlane[1][planepos] = word>>8;
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VGLPlane[2][planepos] = word>>16;
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VGLPlane[3][planepos] = word>>24;
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planepos++;
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last += 8;
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}
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planepos--;
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if (end_offset) {
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word <<= (8 - end_offset);
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VGLPlane[0][planepos] = word;
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VGLPlane[1][planepos] = word>>8;
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VGLPlane[2][planepos] = word>>16;
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VGLPlane[3][planepos] = word>>24;
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}
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if (start_offset || end_offset)
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width+=8;
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width /= 8;
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outb(0x3ce, 0x01); outb(0x3cf, 0x00); /* set/reset enable */
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outb(0x3ce, 0x08); outb(0x3cf, 0xff); /* bit mask */
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for (i=0; i<4; i++) {
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outb(0x3c4, 0x02);
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outb(0x3c5, 0x01<<i);
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outb(0x3ce, 0x04);
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outb(0x3cf, i);
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pos = VGLAdpInfo.va_line_width*y + x/8;
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if (dst->Type == VIDBUF4) {
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if (end_offset)
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VGLPlane[i][planepos] |= dst->Bitmap[pos+planepos] & mask[end_offset];
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if (start_offset)
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VGLPlane[i][0] |= dst->Bitmap[pos] & ~mask[start_offset];
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bcopy(&VGLPlane[i][0], dst->Bitmap + pos, width);
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} else { /* VIDBUF4S */
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if (end_offset) {
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offset = VGLSetSegment(pos + planepos);
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VGLPlane[i][planepos] |= dst->Bitmap[offset] & mask[end_offset];
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}
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offset = VGLSetSegment(pos);
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if (start_offset)
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VGLPlane[i][0] |= dst->Bitmap[offset] & ~mask[start_offset];
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for (last = width; ; ) {
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len = min(VGLAdpInfo.va_window_size - offset, last);
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bcopy(&VGLPlane[i][width - last], dst->Bitmap + offset, len);
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pos += len;
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last -= len;
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if (last <= 0)
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break;
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offset = VGLSetSegment(pos);
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}
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}
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}
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break;
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case VIDBUF8X:
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address = dst->Bitmap + VGLAdpInfo.va_line_width * y + x/4;
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for (i=0; i<4; i++) {
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outb(0x3c4, 0x02);
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outb(0x3c5, 0x01 << ((x + i)%4));
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for (planepos=0, pos=i; pos<width; planepos++, pos+=4)
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address[planepos] = line[pos];
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if ((x + i)%4 == 3)
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++address;
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}
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break;
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case VIDBUF8S:
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pos = dst->VXsize * y + x;
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while (width > 0) {
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offset = VGLSetSegment(pos);
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i = min(VGLAdpInfo.va_window_size - offset, width);
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bcopy(line, dst->Bitmap + offset, i);
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line += i;
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pos += i;
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width -= i;
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}
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break;
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case VIDBUF16S:
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case VIDBUF24S:
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case VIDBUF32S:
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width = width * dst->PixelBytes;
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pos = (dst->VXsize * y + x) * dst->PixelBytes;
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while (width > 0) {
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offset = VGLSetSegment(pos);
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i = min(VGLAdpInfo.va_window_size - offset, width);
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bcopy(line, dst->Bitmap + offset, i);
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line += i;
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pos += i;
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width -= i;
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}
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break;
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case VIDBUF8:
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case MEMBUF:
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address = dst->Bitmap + dst->VXsize * y + x;
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bcopy(line, address, width);
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break;
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case VIDBUF16:
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case VIDBUF24:
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case VIDBUF32:
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address = dst->Bitmap + (dst->VXsize * y + x) * dst->PixelBytes;
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bcopy(line, address, width * dst->PixelBytes);
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break;
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default:
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;
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}
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}
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static void
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ReadVerticalLine(VGLBitmap *src, int x, int y, int width, byte *line)
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{
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int i, bit, pos, count, planepos, start_offset, end_offset, offset;
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int width2, len;
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byte *address;
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byte *VGLPlane[4];
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switch (src->Type) {
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case VIDBUF4S:
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start_offset = (x & 0x07);
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end_offset = (x + width) & 0x07;
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count = (width + start_offset) / 8;
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if (end_offset)
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count++;
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VGLPlane[0] = VGLBuf;
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VGLPlane[1] = VGLPlane[0] + count;
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VGLPlane[2] = VGLPlane[1] + count;
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VGLPlane[3] = VGLPlane[2] + count;
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for (i=0; i<4; i++) {
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outb(0x3ce, 0x04);
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outb(0x3cf, i);
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pos = VGLAdpInfo.va_line_width*y + x/8;
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for (width2 = count; width2 > 0; ) {
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offset = VGLSetSegment(pos);
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len = min(VGLAdpInfo.va_window_size - offset, width2);
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bcopy(src->Bitmap + offset, &VGLPlane[i][count - width2], len);
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pos += len;
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width2 -= len;
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}
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}
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goto read_planar;
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case VIDBUF4:
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address = src->Bitmap + VGLAdpInfo.va_line_width * y + x/8;
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start_offset = (x & 0x07);
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end_offset = (x + width) & 0x07;
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count = (width + start_offset) / 8;
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if (end_offset)
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count++;
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VGLPlane[0] = VGLBuf;
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VGLPlane[1] = VGLPlane[0] + count;
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VGLPlane[2] = VGLPlane[1] + count;
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VGLPlane[3] = VGLPlane[2] + count;
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for (i=0; i<4; i++) {
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outb(0x3ce, 0x04);
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outb(0x3cf, i);
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bcopy(address, &VGLPlane[i][0], count);
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}
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read_planar:
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pos = 0;
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planepos = 0;
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bit = 7 - start_offset;
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while (pos < width) {
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for (; bit >= 0 && pos < width; bit--, pos++) {
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line[pos] = (VGLPlane[0][planepos] & (1<<bit) ? 1 : 0) |
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((VGLPlane[1][planepos] & (1<<bit) ? 1 : 0) << 1) |
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((VGLPlane[2][planepos] & (1<<bit) ? 1 : 0) << 2) |
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((VGLPlane[3][planepos] & (1<<bit) ? 1 : 0) << 3);
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}
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planepos++;
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bit = 7;
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}
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break;
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case VIDBUF8X:
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address = src->Bitmap + VGLAdpInfo.va_line_width * y + x/4;
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for (i=0; i<4; i++) {
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outb(0x3ce, 0x04);
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outb(0x3cf, (x + i)%4);
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for (planepos=0, pos=i; pos<width; planepos++, pos+=4)
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line[pos] = address[planepos];
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if ((x + i)%4 == 3)
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++address;
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}
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break;
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case VIDBUF8S:
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pos = src->VXsize * y + x;
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while (width > 0) {
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offset = VGLSetSegment(pos);
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i = min(VGLAdpInfo.va_window_size - offset, width);
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bcopy(src->Bitmap + offset, line, i);
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line += i;
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pos += i;
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width -= i;
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}
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break;
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case VIDBUF16S:
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case VIDBUF24S:
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case VIDBUF32S:
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width = width * src->PixelBytes;
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pos = (src->VXsize * y + x) * src->PixelBytes;
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while (width > 0) {
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offset = VGLSetSegment(pos);
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i = min(VGLAdpInfo.va_window_size - offset, width);
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bcopy(src->Bitmap + offset, line, i);
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line += i;
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pos += i;
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width -= i;
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}
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break;
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case VIDBUF8:
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case MEMBUF:
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address = src->Bitmap + src->VXsize * y + x;
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bcopy(address, line, width);
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break;
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case VIDBUF16:
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case VIDBUF24:
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case VIDBUF32:
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address = src->Bitmap + (src->VXsize * y + x) * src->PixelBytes;
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bcopy(address, line, width * src->PixelBytes);
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break;
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default:
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;
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}
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}
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int
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__VGLBitmapCopy(VGLBitmap *src, int srcx, int srcy,
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VGLBitmap *dst, int dstx, int dsty, int width, int hight)
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{
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int srcline, dstline;
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if (srcx>src->VXsize || srcy>src->VYsize
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|| dstx>dst->VXsize || dsty>dst->VYsize)
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return -1;
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if (srcx < 0) {
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width=width+srcx; dstx-=srcx; srcx=0;
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}
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if (srcy < 0) {
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hight=hight+srcy; dsty-=srcy; srcy=0;
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}
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if (dstx < 0) {
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width=width+dstx; srcx-=dstx; dstx=0;
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}
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if (dsty < 0) {
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hight=hight+dsty; srcy-=dsty; dsty=0;
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}
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if (srcx+width > src->VXsize)
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width=src->VXsize-srcx;
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if (srcy+hight > src->VYsize)
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hight=src->VYsize-srcy;
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if (dstx+width > dst->VXsize)
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width=dst->VXsize-dstx;
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if (dsty+hight > dst->VYsize)
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hight=dst->VYsize-dsty;
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if (width < 0 || hight < 0)
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return -1;
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if (src->Type == MEMBUF) {
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for (srcline=srcy, dstline=dsty; srcline<srcy+hight; srcline++, dstline++) {
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WriteVerticalLine(dst, dstx, dstline, width,
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src->Bitmap+(srcline*src->VXsize+srcx)*dst->PixelBytes);
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}
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}
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else if (dst->Type == MEMBUF) {
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for (srcline=srcy, dstline=dsty; srcline<srcy+hight; srcline++, dstline++) {
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ReadVerticalLine(src, srcx, srcline, width,
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dst->Bitmap+(dstline*dst->VXsize+dstx)*src->PixelBytes);
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}
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}
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else {
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byte buffer[2048]; /* XXX */
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byte *p;
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if (width * src->PixelBytes > sizeof(buffer)) {
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p = malloc(width * src->PixelBytes);
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if (p == NULL)
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return 1;
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} else {
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p = buffer;
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}
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for (srcline=srcy, dstline=dsty; srcline<srcy+hight; srcline++, dstline++) {
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ReadVerticalLine(src, srcx, srcline, width, p);
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WriteVerticalLine(dst, dstx, dstline, width, p);
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}
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if (width * src->PixelBytes > sizeof(buffer))
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free(p);
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}
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return 0;
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}
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int
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VGLBitmapCopy(VGLBitmap *src, int srcx, int srcy,
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VGLBitmap *dst, int dstx, int dsty, int width, int hight)
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{
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int error;
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VGLMouseFreeze(dstx, dsty, width, hight, 0);
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error = __VGLBitmapCopy(src, srcx, srcy, dst, dstx, dsty, width, hight);
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VGLMouseUnFreeze();
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return error;
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}
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VGLBitmap
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*VGLBitmapCreate(int type, int xsize, int ysize, byte *bits)
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{
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VGLBitmap *object;
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if (type != MEMBUF)
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return NULL;
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if (xsize < 0 || ysize < 0)
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return NULL;
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object = (VGLBitmap *)malloc(sizeof(*object));
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if (object == NULL)
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return NULL;
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object->Type = type;
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object->Xsize = xsize;
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object->Ysize = ysize;
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object->VXsize = xsize;
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object->VYsize = ysize;
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object->Xorigin = 0;
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object->Yorigin = 0;
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object->Bitmap = bits;
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object->PixelBytes = VGLDisplay->PixelBytes;
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return object;
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}
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void
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VGLBitmapDestroy(VGLBitmap *object)
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{
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if (object->Bitmap)
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free(object->Bitmap);
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free(object);
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}
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int
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VGLBitmapAllocateBits(VGLBitmap *object)
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{
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object->Bitmap = malloc(object->VXsize*object->VYsize*object->PixelBytes);
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if (object->Bitmap == NULL)
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return -1;
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return 0;
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}
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