You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

819 lines
24 KiB

/*
*
* Copyright © 1998 Keith Packard
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <string.h>
#include "fb.h"
#define InitializeShifts(sx,dx,ls,rs) { \
if (sx != dx) { \
if (sx > dx) { \
ls = sx - dx; \
rs = FB_UNIT - ls; \
} else { \
rs = dx - sx; \
ls = FB_UNIT - rs; \
} \
} \
}
void
fbBlt(FbBits * srcLine,
FbStride srcStride,
int srcX,
FbBits * dstLine,
FbStride dstStride,
int dstX,
int width,
int height, int alu, FbBits pm, int bpp, Bool reverse, Bool upsidedown)
{
FbBits *src, *dst;
int leftShift, rightShift;
FbBits startmask, endmask;
FbBits bits, bits1;
int n, nmiddle;
Bool destInvarient;
int careful;
int startbyte, endbyte;
FbDeclareMergeRop();
if (bpp == 24 && !FbCheck24Pix(pm)) {
fbBlt24(srcLine, srcStride, srcX, dstLine, dstStride, dstX,
width, height, alu, pm, reverse, upsidedown);
return;
}
careful = !((srcLine < dstLine && srcLine + width * (bpp>>3) > dstLine) ||
(dstLine < srcLine && dstLine + width * (bpp>>3) > srcLine)) ||
(bpp & 7);
if (alu == GXcopy && pm == FB_ALLONES && !careful &&
!(srcX & 7) && !(dstX & 7) && !(width & 7)) {
int i;
CARD8 *tmpsrc = (CARD8 *) srcLine;
CARD8 *tmpdst = (CARD8 *) dstLine;
srcStride *= sizeof(FbBits);
dstStride *= sizeof(FbBits);
width >>= 3;
tmpsrc += (srcX >> 3);
tmpdst += (dstX >> 3);
if (!upsidedown)
for (i = 0; i < height; i++)
memcpy(tmpdst + i * dstStride, tmpsrc + i * srcStride, width);
else
for (i = height - 1; i >= 0; i--)
memcpy(tmpdst + i * dstStride, tmpsrc + i * srcStride, width);
return;
}
FbInitializeMergeRop(alu, pm);
destInvarient = FbDestInvarientMergeRop();
if (upsidedown) {
srcLine += (height - 1) * (srcStride);
dstLine += (height - 1) * (dstStride);
srcStride = -srcStride;
dstStride = -dstStride;
}
FbMaskBitsBytes(dstX, width, destInvarient, startmask, startbyte,
nmiddle, endmask, endbyte);
if (reverse) {
srcLine += ((srcX + width - 1) >> FB_SHIFT) + 1;
dstLine += ((dstX + width - 1) >> FB_SHIFT) + 1;
srcX = (srcX + width - 1) & FB_MASK;
dstX = (dstX + width - 1) & FB_MASK;
}
else {
srcLine += srcX >> FB_SHIFT;
dstLine += dstX >> FB_SHIFT;
srcX &= FB_MASK;
dstX &= FB_MASK;
}
if (srcX == dstX) {
while (height--) {
src = srcLine;
srcLine += srcStride;
dst = dstLine;
dstLine += dstStride;
if (reverse) {
if (endmask) {
bits = *--src;
--dst;
FbDoRightMaskByteMergeRop(dst, bits, endbyte, endmask);
}
n = nmiddle;
if (destInvarient) {
while (n--)
*--dst = FbDoDestInvarientMergeRop(*--src);
}
else {
while (n--) {
bits = *--src;
--dst;
*dst = FbDoMergeRop(bits, *dst);
}
}
if (startmask) {
bits = *--src;
--dst;
FbDoLeftMaskByteMergeRop(dst, bits, startbyte, startmask);
}
}
else {
if (startmask) {
bits = *src++;
FbDoLeftMaskByteMergeRop(dst, bits, startbyte, startmask);
dst++;
}
n = nmiddle;
if (destInvarient) {
#if 0
/*
* This provides some speedup on screen->screen blts
* over the PCI bus, usually about 10%. But fb
* isn't usually used for this operation...
*/
if (_ca2 + 1 == 0 && _cx2 == 0) {
FbBits t1, t2, t3, t4;
while (n >= 4) {
t1 = *src++;
t2 = *src++;
t3 = *src++;
t4 = *src++;
*dst++ = t1;
*dst++ = t2;
*dst++ = t3;
*dst++ = t4;
n -= 4;
}
}
#endif
while (n--)
*dst++ = FbDoDestInvarientMergeRop(*src++);
}
else {
while (n--) {
bits = *src++;
*dst = FbDoMergeRop(bits, *dst);
dst++;
}
}
if (endmask) {
bits = *src;
FbDoRightMaskByteMergeRop(dst, bits, endbyte, endmask);
}
}
}
}
else {
if (srcX > dstX) {
leftShift = srcX - dstX;
rightShift = FB_UNIT - leftShift;
}
else {
rightShift = dstX - srcX;
leftShift = FB_UNIT - rightShift;
}
while (height--) {
src = srcLine;
srcLine += srcStride;
dst = dstLine;
dstLine += dstStride;
bits1 = 0;
if (reverse) {
if (srcX < dstX)
bits1 = *--src;
if (endmask) {
bits = FbScrRight(bits1, rightShift);
if (FbScrRight(endmask, leftShift)) {
bits1 = *--src;
bits |= FbScrLeft(bits1, leftShift);
}
--dst;
FbDoRightMaskByteMergeRop(dst, bits, endbyte, endmask);
}
n = nmiddle;
if (destInvarient) {
while (n--) {
bits = FbScrRight(bits1, rightShift);
bits1 = *--src;
bits |= FbScrLeft(bits1, leftShift);
--dst;
*dst = FbDoDestInvarientMergeRop(bits);
}
}
else {
while (n--) {
bits = FbScrRight(bits1, rightShift);
bits1 = *--src;
bits |= FbScrLeft(bits1, leftShift);
--dst;
*dst = FbDoMergeRop(bits, *dst);
}
}
if (startmask) {
bits = FbScrRight(bits1, rightShift);
if (FbScrRight(startmask, leftShift)) {
bits1 = *--src;
bits |= FbScrLeft(bits1, leftShift);
}
--dst;
FbDoLeftMaskByteMergeRop(dst, bits, startbyte, startmask);
}
}
else {
if (srcX > dstX)
bits1 = *src++;
if (startmask) {
bits = FbScrLeft(bits1, leftShift);
if (FbScrLeft(startmask, rightShift)) {
bits1 = *src++;
bits |= FbScrRight(bits1, rightShift);
}
FbDoLeftMaskByteMergeRop(dst, bits, startbyte, startmask);
dst++;
}
n = nmiddle;
if (destInvarient) {
while (n--) {
bits = FbScrLeft(bits1, leftShift);
bits1 = *src++;
bits |= FbScrRight(bits1, rightShift);
*dst = FbDoDestInvarientMergeRop(bits);
dst++;
}
}
else {
while (n--) {
bits = FbScrLeft(bits1, leftShift);
bits1 = *src++;
bits |= FbScrRight(bits1, rightShift);
*dst = FbDoMergeRop(bits, *dst);
dst++;
}
}
if (endmask) {
bits = FbScrLeft(bits1, leftShift);
if (FbScrLeft(endmask, rightShift)) {
bits1 = *src;
bits |= FbScrRight(bits1, rightShift);
}
FbDoRightMaskByteMergeRop(dst, bits, endbyte, endmask);
}
}
}
}
}
#undef DEBUG_BLT24
#ifdef DEBUG_BLT24
static unsigned long
getPixel(char *src, int x)
{
unsigned long l;
l = 0;
memcpy(&l, src + x * 3, 3);
return l;
}
#endif
static void
fbBlt24Line(FbBits * src,
int srcX,
FbBits * dst, int dstX, int width, int alu, FbBits pm, Bool reverse)
{
#ifdef DEBUG_BLT24
char *origDst = (char *) dst;
FbBits *origLine = dst + ((dstX >> FB_SHIFT) - 1);
int origNlw = ((width + FB_MASK) >> FB_SHIFT) + 3;
int origX = dstX / 24;
#endif
int leftShift, rightShift;
FbBits startmask, endmask;
int n;
FbBits bits, bits1;
FbBits mask;
int rot;
FbDeclareMergeRop();
FbInitializeMergeRop(alu, FB_ALLONES);
FbMaskBits(dstX, width, startmask, n, endmask);
#ifdef DEBUG_BLT24
ErrorF("dstX %d width %d reverse %d\n", dstX, width, reverse);
#endif
if (reverse) {
src += ((srcX + width - 1) >> FB_SHIFT) + 1;
dst += ((dstX + width - 1) >> FB_SHIFT) + 1;
rot = FbFirst24Rot(((dstX + width - 8) & FB_MASK));
rot = FbPrev24Rot(rot);
#ifdef DEBUG_BLT24
ErrorF("dstX + width - 8: %d rot: %d\n", (dstX + width - 8) & FB_MASK,
rot);
#endif
srcX = (srcX + width - 1) & FB_MASK;
dstX = (dstX + width - 1) & FB_MASK;
}
else {
src += srcX >> FB_SHIFT;
dst += dstX >> FB_SHIFT;
srcX &= FB_MASK;
dstX &= FB_MASK;
rot = FbFirst24Rot(dstX);
#ifdef DEBUG_BLT24
ErrorF("dstX: %d rot: %d\n", dstX, rot);
#endif
}
mask = FbRot24(pm, rot);
#ifdef DEBUG_BLT24
ErrorF("pm 0x%x mask 0x%x\n", pm, mask);
#endif
if (srcX == dstX) {
if (reverse) {
if (endmask) {
bits = *--src;
--dst;
*dst = FbDoMaskMergeRop(bits, *dst, mask & endmask);
mask = FbPrev24Pix(mask);
}
while (n--) {
bits = *--src;
--dst;
*dst = FbDoMaskMergeRop(bits, *dst, mask);
mask = FbPrev24Pix(mask);
}
if (startmask) {
bits = *--src;
--dst;
*dst = FbDoMaskMergeRop(bits, *dst, mask & startmask);
}
}
else {
if (startmask) {
bits = *src++;
*dst = FbDoMaskMergeRop(bits, *dst, mask & startmask);
dst++;
mask = FbNext24Pix(mask);
}
while (n--) {
bits = *src++;
*dst = FbDoMaskMergeRop(bits, *dst, mask);
dst++;
mask = FbNext24Pix(mask);
}
if (endmask) {
bits = *src;
*dst = FbDoMaskMergeRop(bits, *dst, mask & endmask);
}
}
}
else {
if (srcX > dstX) {
leftShift = srcX - dstX;
rightShift = FB_UNIT - leftShift;
}
else {
rightShift = dstX - srcX;
leftShift = FB_UNIT - rightShift;
}
bits1 = 0;
if (reverse) {
if (srcX < dstX)
bits1 = *--src;
if (endmask) {
bits = FbScrRight(bits1, rightShift);
if (FbScrRight(endmask, leftShift)) {
bits1 = *--src;
bits |= FbScrLeft(bits1, leftShift);
}
--dst;
*dst = FbDoMaskMergeRop(bits, *dst, mask & endmask);
mask = FbPrev24Pix(mask);
}
while (n--) {
bits = FbScrRight(bits1, rightShift);
bits1 = *--src;
bits |= FbScrLeft(bits1, leftShift);
--dst;
*dst = FbDoMaskMergeRop(bits, *dst, mask);
mask = FbPrev24Pix(mask);
}
if (startmask) {
bits = FbScrRight(bits1, rightShift);
if (FbScrRight(startmask, leftShift)) {
bits1 = *--src;
bits |= FbScrLeft(bits1, leftShift);
}
--dst;
*dst = FbDoMaskMergeRop(bits, *dst, mask & startmask);
}
}
else {
if (srcX > dstX)
bits1 = *src++;
if (startmask) {
bits = FbScrLeft(bits1, leftShift);
bits1 = *src++;
bits |= FbScrRight(bits1, rightShift);
*dst = FbDoMaskMergeRop(bits, *dst, mask & startmask);
dst++;
mask = FbNext24Pix(mask);
}
while (n--) {
bits = FbScrLeft(bits1, leftShift);
bits1 = *src++;
bits |= FbScrRight(bits1, rightShift);
*dst = FbDoMaskMergeRop(bits, *dst, mask);
dst++;
mask = FbNext24Pix(mask);
}
if (endmask) {
bits = FbScrLeft(bits1, leftShift);
if (FbScrLeft(endmask, rightShift)) {
bits1 = *src;
bits |= FbScrRight(bits1, rightShift);
}
*dst = FbDoMaskMergeRop(bits, *dst, mask & endmask);
}
}
}
#ifdef DEBUG_BLT24
{
int firstx, lastx, x;
firstx = origX;
if (firstx)
firstx--;
lastx = origX + width / 24 + 1;
for (x = firstx; x <= lastx; x++)
ErrorF("%06x ", getPixel(origDst, x));
ErrorF("\n");
while (origNlw--)
ErrorF("%08x ", *origLine++);
ErrorF("\n");
}
#endif
}
void
fbBlt24(FbBits * srcLine,
FbStride srcStride,
int srcX,
FbBits * dstLine,
FbStride dstStride,
int dstX,
int width,
int height, int alu, FbBits pm, Bool reverse, Bool upsidedown)
{
if (upsidedown) {
srcLine += (height - 1) * srcStride;
dstLine += (height - 1) * dstStride;
srcStride = -srcStride;
dstStride = -dstStride;
}
while (height--) {
fbBlt24Line(srcLine, srcX, dstLine, dstX, width, alu, pm, reverse);
srcLine += srcStride;
dstLine += dstStride;
}
#ifdef DEBUG_BLT24
ErrorF("\n");
#endif
}
#if FB_SHIFT == FB_STIP_SHIFT + 1
/*
* Could be generalized to FB_SHIFT > FB_STIP_SHIFT + 1 by
* creating an ring of values stepped through for each line
*/
void
fbBltOdd(FbBits * srcLine,
FbStride srcStrideEven,
FbStride srcStrideOdd,
int srcXEven,
int srcXOdd,
FbBits * dstLine,
FbStride dstStrideEven,
FbStride dstStrideOdd,
int dstXEven,
int dstXOdd, int width, int height, int alu, FbBits pm, int bpp)
{
FbBits *src;
int leftShiftEven, rightShiftEven;
FbBits startmaskEven, endmaskEven;
int nmiddleEven;
FbBits *dst;
int leftShiftOdd, rightShiftOdd;
FbBits startmaskOdd, endmaskOdd;
int nmiddleOdd;
int leftShift, rightShift;
FbBits startmask, endmask;
int nmiddle;
int srcX, dstX;
FbBits bits, bits1;
int n;
Bool destInvarient;
Bool even;
FbDeclareMergeRop();
FbInitializeMergeRop(alu, pm);
destInvarient = FbDestInvarientMergeRop();
srcLine += srcXEven >> FB_SHIFT;
dstLine += dstXEven >> FB_SHIFT;
srcXEven &= FB_MASK;
dstXEven &= FB_MASK;
srcXOdd &= FB_MASK;
dstXOdd &= FB_MASK;
FbMaskBits(dstXEven, width, startmaskEven, nmiddleEven, endmaskEven);
FbMaskBits(dstXOdd, width, startmaskOdd, nmiddleOdd, endmaskOdd);
even = TRUE;
InitializeShifts(srcXEven, dstXEven, leftShiftEven, rightShiftEven);
InitializeShifts(srcXOdd, dstXOdd, leftShiftOdd, rightShiftOdd);
while (height--) {
src = srcLine;
dst = dstLine;
if (even) {
srcX = srcXEven;
dstX = dstXEven;
startmask = startmaskEven;
endmask = endmaskEven;
nmiddle = nmiddleEven;
leftShift = leftShiftEven;
rightShift = rightShiftEven;
srcLine += srcStrideEven;
dstLine += dstStrideEven;
even = FALSE;
}
else {
srcX = srcXOdd;
dstX = dstXOdd;
startmask = startmaskOdd;
endmask = endmaskOdd;
nmiddle = nmiddleOdd;
leftShift = leftShiftOdd;
rightShift = rightShiftOdd;
srcLine += srcStrideOdd;
dstLine += dstStrideOdd;
even = TRUE;
}
if (srcX == dstX) {
if (startmask) {
bits = *src++;
*dst = FbDoMaskMergeRop(bits, *dst, startmask);
dst++;
}
n = nmiddle;
if (destInvarient) {
while (n--) {
bits = *src++;
*dst = FbDoDestInvarientMergeRop(bits);
dst++;
}
}
else {
while (n--) {
bits = *src++;
*dst = FbDoMergeRop(bits, *dst);
dst++;
}
}
if (endmask) {
bits = *src;
*dst = FbDoMaskMergeRop(bits, *dst, endmask);
}
}
else {
bits = 0;
if (srcX > dstX)
bits = *src++;
if (startmask) {
bits1 = FbScrLeft(bits, leftShift);
bits = *src++;
bits1 |= FbScrRight(bits, rightShift);
*dst = FbDoMaskMergeRop(bits1, *dst, startmask);
dst++;
}
n = nmiddle;
if (destInvarient) {
while (n--) {
bits1 = FbScrLeft(bits, leftShift);
bits = *src++;
bits1 |= FbScrRight(bits, rightShift);
*dst = FbDoDestInvarientMergeRop(bits1);
dst++;
}
}
else {
while (n--) {
bits1 = FbScrLeft(bits, leftShift);
bits = *src++;
bits1 |= FbScrRight(bits, rightShift);
*dst = FbDoMergeRop(bits1, *dst);
dst++;
}
}
if (endmask) {
bits1 = FbScrLeft(bits, leftShift);
if (FbScrLeft(endmask, rightShift)) {
bits = *src;
bits1 |= FbScrRight(bits, rightShift);
}
*dst = FbDoMaskMergeRop(bits1, *dst, endmask);
}
}
}
}
void
fbBltOdd24(FbBits * srcLine,
FbStride srcStrideEven,
FbStride srcStrideOdd,
int srcXEven,
int srcXOdd,
FbBits * dstLine,
FbStride dstStrideEven,
FbStride dstStrideOdd,
int dstXEven, int dstXOdd, int width, int height, int alu, FbBits pm)
{
Bool even = TRUE;
while (height--) {
if (even) {
fbBlt24Line(srcLine, srcXEven, dstLine, dstXEven,
width, alu, pm, FALSE);
srcLine += srcStrideEven;
dstLine += dstStrideEven;
even = FALSE;
}
else {
fbBlt24Line(srcLine, srcXOdd, dstLine, dstXOdd,
width, alu, pm, FALSE);
srcLine += srcStrideOdd;
dstLine += dstStrideOdd;
even = TRUE;
}
}
#if 0
fprintf(stderr, "\n");
#endif
}
#endif
#if FB_STIP_SHIFT != FB_SHIFT
void
fbSetBltOdd(FbStip * stip,
FbStride stipStride,
int srcX,
FbBits ** bits,
FbStride * strideEven,
FbStride * strideOdd, int *srcXEven, int *srcXOdd)
{
int srcAdjust;
int strideAdjust;
/*
* bytes needed to align source
*/
srcAdjust = (((int) stip) & (FB_MASK >> 3));
/*
* FbStip units needed to align stride
*/
strideAdjust = stipStride & (FB_MASK >> FB_STIP_SHIFT);
*bits = (FbBits *) ((char *) stip - srcAdjust);
if (srcAdjust) {
*strideEven = FbStipStrideToBitsStride(stipStride + 1);
*strideOdd = FbStipStrideToBitsStride(stipStride);
*srcXEven = srcX + (srcAdjust << 3);
*srcXOdd = srcX + (srcAdjust << 3) - (strideAdjust << FB_STIP_SHIFT);
}
else {
*strideEven = FbStipStrideToBitsStride(stipStride);
*strideOdd = FbStipStrideToBitsStride(stipStride + 1);
*srcXEven = srcX;
*srcXOdd = srcX + (strideAdjust << FB_STIP_SHIFT);
}
}
#endif
void
fbBltStip(FbStip * src, FbStride srcStride, /* in FbStip units, not FbBits units */
int srcX, FbStip * dst, FbStride dstStride, /* in FbStip units, not FbBits units */
int dstX, int width, int height, int alu, FbBits pm, int bpp)
{
#if FB_STIP_SHIFT != FB_SHIFT
if (FB_STIP_ODDSTRIDE(srcStride) || FB_STIP_ODDPTR(src) ||
FB_STIP_ODDSTRIDE(dstStride) || FB_STIP_ODDPTR(dst)) {
FbStride srcStrideEven, srcStrideOdd;
FbStride dstStrideEven, dstStrideOdd;
int srcXEven, srcXOdd;
int dstXEven, dstXOdd;
FbBits *s, *d;
int sx, dx;
src += srcX >> FB_STIP_SHIFT;
srcX &= FB_STIP_MASK;
dst += dstX >> FB_STIP_SHIFT;
dstX &= FB_STIP_MASK;
fbSetBltOdd(src, srcStride, srcX,
&s, &srcStrideEven, &srcStrideOdd, &srcXEven, &srcXOdd);
fbSetBltOdd(dst, dstStride, dstX,
&d, &dstStrideEven, &dstStrideOdd, &dstXEven, &dstXOdd);
if (bpp == 24 && !FbCheck24Pix(pm)) {
fbBltOdd24(s, srcStrideEven, srcStrideOdd,
srcXEven, srcXOdd,
d, dstStrideEven, dstStrideOdd,
dstXEven, dstXOdd, width, height, alu, pm);
}
else
{
fbBltOdd(s, srcStrideEven, srcStrideOdd,
srcXEven, srcXOdd,
d, dstStrideEven, dstStrideOdd,
dstXEven, dstXOdd, width, height, alu, pm, bpp);
}
}
else
#endif
{
fbBlt((FbBits *) src, FbStipStrideToBitsStride(srcStride),
srcX,
(FbBits *) dst, FbStipStrideToBitsStride(dstStride),
dstX, width, height, alu, pm, bpp, FALSE, FALSE);
}
}