c96e16b3a6
multiples of 8. Then the misaligned pixels at the end were not copied. Clean up variable misuse related to this bug. The width in bytes was first calculated correctly and used to do complicated reblocking correctly, but it was stored in an unrelated scratch variable and later recalculated with an off-by-1-error, so the last byte (times 4 planes) in the intermediate copy was not copied. This doubly-misaligned case is especially slow. Misalignment complicates the reblocking, and each misaligment requires a read before write, and this read is still not done from the shadow buffer.
318 lines
9.0 KiB
C
318 lines
9.0 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Copyright (c) 1991-1997 Søren Schmidt
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer,
|
|
* in this position and unchanged.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
#include <signal.h>
|
|
#include <sys/fbio.h>
|
|
#include "vgl.h"
|
|
|
|
#define min(x, y) (((x) < (y)) ? (x) : (y))
|
|
|
|
static byte mask[8] = {0xff, 0x7f, 0x3f, 0x1f, 0x0f, 0x07, 0x03, 0x01};
|
|
static int color2bit[16] = {0x00000000, 0x00000001, 0x00000100, 0x00000101,
|
|
0x00010000, 0x00010001, 0x00010100, 0x00010101,
|
|
0x01000000, 0x01000001, 0x01000100, 0x01000101,
|
|
0x01010000, 0x01010001, 0x01010100, 0x01010101};
|
|
|
|
static void
|
|
WriteVerticalLine(VGLBitmap *dst, int x, int y, int width, byte *line)
|
|
{
|
|
int bwidth, i, pos, last, planepos, start_offset, end_offset, offset;
|
|
int len;
|
|
unsigned int word = 0;
|
|
byte *address;
|
|
byte *VGLPlane[4];
|
|
|
|
switch (dst->Type) {
|
|
case VIDBUF4:
|
|
case VIDBUF4S:
|
|
start_offset = (x & 0x07);
|
|
end_offset = (x + width) & 0x07;
|
|
bwidth = (width + start_offset) / 8;
|
|
if (end_offset)
|
|
bwidth++;
|
|
VGLPlane[0] = VGLBuf;
|
|
VGLPlane[1] = VGLPlane[0] + bwidth;
|
|
VGLPlane[2] = VGLPlane[1] + bwidth;
|
|
VGLPlane[3] = VGLPlane[2] + bwidth;
|
|
pos = 0;
|
|
planepos = 0;
|
|
last = 8 - start_offset;
|
|
while (pos < width) {
|
|
word = 0;
|
|
while (pos < last && pos < width)
|
|
word = (word<<1) | color2bit[line[pos++]&0x0f];
|
|
VGLPlane[0][planepos] = word;
|
|
VGLPlane[1][planepos] = word>>8;
|
|
VGLPlane[2][planepos] = word>>16;
|
|
VGLPlane[3][planepos] = word>>24;
|
|
planepos++;
|
|
last += 8;
|
|
}
|
|
planepos--;
|
|
if (end_offset) {
|
|
word <<= (8 - end_offset);
|
|
VGLPlane[0][planepos] = word;
|
|
VGLPlane[1][planepos] = word>>8;
|
|
VGLPlane[2][planepos] = word>>16;
|
|
VGLPlane[3][planepos] = word>>24;
|
|
}
|
|
outb(0x3ce, 0x01); outb(0x3cf, 0x00); /* set/reset enable */
|
|
outb(0x3ce, 0x08); outb(0x3cf, 0xff); /* bit mask */
|
|
for (i=0; i<4; i++) {
|
|
outb(0x3c4, 0x02);
|
|
outb(0x3c5, 0x01<<i);
|
|
outb(0x3ce, 0x04);
|
|
outb(0x3cf, i);
|
|
pos = VGLAdpInfo.va_line_width*y + x/8;
|
|
if (dst->Type == VIDBUF4) {
|
|
if (end_offset)
|
|
VGLPlane[i][planepos] |= dst->Bitmap[pos+planepos] & mask[end_offset];
|
|
if (start_offset)
|
|
VGLPlane[i][0] |= dst->Bitmap[pos] & ~mask[start_offset];
|
|
bcopy(&VGLPlane[i][0], dst->Bitmap + pos, bwidth);
|
|
} else { /* VIDBUF4S */
|
|
if (end_offset) {
|
|
offset = VGLSetSegment(pos + planepos);
|
|
VGLPlane[i][planepos] |= dst->Bitmap[offset] & mask[end_offset];
|
|
}
|
|
offset = VGLSetSegment(pos);
|
|
if (start_offset)
|
|
VGLPlane[i][0] |= dst->Bitmap[offset] & ~mask[start_offset];
|
|
for (last = bwidth; ; ) {
|
|
len = min(VGLAdpInfo.va_window_size - offset, last);
|
|
bcopy(&VGLPlane[i][bwidth - last], dst->Bitmap + offset, len);
|
|
pos += len;
|
|
last -= len;
|
|
if (last <= 0)
|
|
break;
|
|
offset = VGLSetSegment(pos);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case VIDBUF8X:
|
|
address = dst->Bitmap + VGLAdpInfo.va_line_width * y + x/4;
|
|
for (i=0; i<4; i++) {
|
|
outb(0x3c4, 0x02);
|
|
outb(0x3c5, 0x01 << ((x + i)%4));
|
|
for (planepos=0, pos=i; pos<width; planepos++, pos+=4)
|
|
address[planepos] = line[pos];
|
|
if ((x + i)%4 == 3)
|
|
++address;
|
|
}
|
|
break;
|
|
case VIDBUF8S:
|
|
case VIDBUF16S:
|
|
case VIDBUF24S:
|
|
case VIDBUF32S:
|
|
width = width * dst->PixelBytes;
|
|
pos = (dst->VXsize * y + x) * dst->PixelBytes;
|
|
while (width > 0) {
|
|
offset = VGLSetSegment(pos);
|
|
i = min(VGLAdpInfo.va_window_size - offset, width);
|
|
bcopy(line, dst->Bitmap + offset, i);
|
|
line += i;
|
|
pos += i;
|
|
width -= i;
|
|
}
|
|
break;
|
|
case MEMBUF:
|
|
case VIDBUF8:
|
|
case VIDBUF16:
|
|
case VIDBUF24:
|
|
case VIDBUF32:
|
|
address = dst->Bitmap + (dst->VXsize * y + x) * dst->PixelBytes;
|
|
bcopy(line, address, width * dst->PixelBytes);
|
|
break;
|
|
default:
|
|
;
|
|
}
|
|
}
|
|
|
|
int
|
|
__VGLBitmapCopy(VGLBitmap *src, int srcx, int srcy,
|
|
VGLBitmap *dst, int dstx, int dsty, int width, int hight)
|
|
{
|
|
byte *buffer, *p;
|
|
int mousemerge, srcline, dstline, yend, yextra, ystep;
|
|
|
|
mousemerge = 0;
|
|
if (hight < 0) {
|
|
hight = -hight;
|
|
mousemerge = (dst == VGLDisplay &&
|
|
VGLMouseOverlap(dstx, dsty, width, hight));
|
|
if (mousemerge)
|
|
buffer = alloca(width*src->PixelBytes);
|
|
}
|
|
if (srcx>src->VXsize || srcy>src->VYsize
|
|
|| dstx>dst->VXsize || dsty>dst->VYsize)
|
|
return -1;
|
|
if (srcx < 0) {
|
|
width=width+srcx; dstx-=srcx; srcx=0;
|
|
}
|
|
if (srcy < 0) {
|
|
hight=hight+srcy; dsty-=srcy; srcy=0;
|
|
}
|
|
if (dstx < 0) {
|
|
width=width+dstx; srcx-=dstx; dstx=0;
|
|
}
|
|
if (dsty < 0) {
|
|
hight=hight+dsty; srcy-=dsty; dsty=0;
|
|
}
|
|
if (srcx+width > src->VXsize)
|
|
width=src->VXsize-srcx;
|
|
if (srcy+hight > src->VYsize)
|
|
hight=src->VYsize-srcy;
|
|
if (dstx+width > dst->VXsize)
|
|
width=dst->VXsize-dstx;
|
|
if (dsty+hight > dst->VYsize)
|
|
hight=dst->VYsize-dsty;
|
|
if (width < 0 || hight < 0)
|
|
return -1;
|
|
yend = srcy + hight;
|
|
yextra = 0;
|
|
ystep = 1;
|
|
if (src->Bitmap == dst->Bitmap && srcy < dsty) {
|
|
yend = srcy - 1;
|
|
yextra = hight - 1;
|
|
ystep = -1;
|
|
}
|
|
for (srcline = srcy + yextra, dstline = dsty + yextra; srcline != yend;
|
|
srcline += ystep, dstline += ystep) {
|
|
p = src->Bitmap+(srcline*src->VXsize+srcx)*dst->PixelBytes;
|
|
if (mousemerge && VGLMouseOverlap(dstx, dstline, width, 1)) {
|
|
bcopy(p, buffer, width*src->PixelBytes);
|
|
p = buffer;
|
|
VGLMouseMerge(dstx, dstline, width, p);
|
|
}
|
|
WriteVerticalLine(dst, dstx, dstline, width, p);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
VGLBitmapCopy(VGLBitmap *src, int srcx, int srcy,
|
|
VGLBitmap *dst, int dstx, int dsty, int width, int hight)
|
|
{
|
|
int error;
|
|
|
|
if (hight < 0)
|
|
return -1;
|
|
if (src == VGLDisplay)
|
|
src = &VGLVDisplay;
|
|
if (src->Type != MEMBUF)
|
|
return -1; /* invalid */
|
|
if (dst == VGLDisplay) {
|
|
VGLMouseFreeze();
|
|
__VGLBitmapCopy(src, srcx, srcy, &VGLVDisplay, dstx, dsty, width, hight);
|
|
error = __VGLBitmapCopy(src, srcx, srcy, &VGLVDisplay, dstx, dsty,
|
|
width, hight);
|
|
if (error != 0)
|
|
return error;
|
|
src = &VGLVDisplay;
|
|
srcx = dstx;
|
|
srcy = dsty;
|
|
} else if (dst->Type != MEMBUF)
|
|
return -1; /* invalid */
|
|
error = __VGLBitmapCopy(src, srcx, srcy, dst, dstx, dsty, width, -hight);
|
|
if (dst == VGLDisplay)
|
|
VGLMouseUnFreeze();
|
|
return error;
|
|
}
|
|
|
|
VGLBitmap
|
|
*VGLBitmapCreate(int type, int xsize, int ysize, byte *bits)
|
|
{
|
|
VGLBitmap *object;
|
|
|
|
if (type != MEMBUF)
|
|
return NULL;
|
|
if (xsize < 0 || ysize < 0)
|
|
return NULL;
|
|
object = (VGLBitmap *)malloc(sizeof(*object));
|
|
if (object == NULL)
|
|
return NULL;
|
|
object->Type = type;
|
|
object->Xsize = xsize;
|
|
object->Ysize = ysize;
|
|
object->VXsize = xsize;
|
|
object->VYsize = ysize;
|
|
object->Xorigin = 0;
|
|
object->Yorigin = 0;
|
|
object->Bitmap = bits;
|
|
object->PixelBytes = VGLDisplay->PixelBytes;
|
|
return object;
|
|
}
|
|
|
|
void
|
|
VGLBitmapDestroy(VGLBitmap *object)
|
|
{
|
|
if (object->Bitmap)
|
|
free(object->Bitmap);
|
|
free(object);
|
|
}
|
|
|
|
int
|
|
VGLBitmapAllocateBits(VGLBitmap *object)
|
|
{
|
|
object->Bitmap = malloc(object->VXsize*object->VYsize*object->PixelBytes);
|
|
if (object->Bitmap == NULL)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
VGLBitmapCvt(VGLBitmap *src, VGLBitmap *dst)
|
|
{
|
|
u_long color;
|
|
int dstpos, i, pb, size, srcpb, srcpos;
|
|
|
|
size = src->VXsize * src->VYsize;
|
|
srcpb = src->PixelBytes;
|
|
if (srcpb <= 0)
|
|
srcpb = 1;
|
|
pb = dst->PixelBytes;
|
|
if (pb == srcpb) {
|
|
bcopy(src->Bitmap, dst->Bitmap, size * pb);
|
|
return;
|
|
}
|
|
if (srcpb != 1)
|
|
return; /* not supported */
|
|
for (srcpos = dstpos = 0; srcpos < size; srcpos++) {
|
|
color = VGLrgb332ToNative(src->Bitmap[srcpos]);
|
|
for (i = 0; i < pb; i++, color >>= 8)
|
|
dst->Bitmap[dstpos++] = color;
|
|
}
|
|
}
|