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/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/cirrus/cir_shadow.c,v 1.1 2000/02/08 13:13:14 eich Exp $ */
/*
Copyright (c) 1999,2000 The XFree86 Project Inc.
based on code written by Mark Vojkovich <markv@valinux.com>
*/
#include "xf86.h"
#include "xf86_OSproc.h"
#include "xf86Resources.h"
#include "xf86_ansic.h"
#include "xf86PciInfo.h"
#include "xf86Pci.h"
#include "shadowfb.h"
#include "servermd.h"
#include "cir.h"
#include "alp.h"
void
cirRefreshArea(ScrnInfoPtr pScrn, int num, BoxPtr pbox)
{
CirPtr pCir = CIRPTR(pScrn);
int width, height, Bpp, FBPitch;
unsigned char *src, *dst;
Bpp = pScrn->bitsPerPixel >> 3;
FBPitch = BitmapBytePad(pScrn->displayWidth * pScrn->bitsPerPixel);
while(num--) {
width = (pbox->x2 - pbox->x1) * Bpp;
height = pbox->y2 - pbox->y1;
src = pCir->ShadowPtr + (pbox->y1 * pCir->ShadowPitch) +
(pbox->x1 * Bpp);
dst = pCir->FbBase + (pbox->y1 * FBPitch) + (pbox->x1 * Bpp);
while(height--) {
memcpy(dst, src, width);
dst += FBPitch;
src += pCir->ShadowPitch;
}
pbox++;
}
}
void
cirPointerMoved(int index, int x, int y)
{
ScrnInfoPtr pScrn = xf86Screens[index];
CirPtr pCir = CIRPTR(pScrn);
int newX, newY;
if(pCir->rotate == 1) {
newX = pScrn->pScreen->height - y - 1;
newY = x;
} else {
newX = y;
newY = pScrn->pScreen->width - x - 1;
}
(*pCir->PointerMoved)(index, newX, newY);
}
void
cirRefreshArea8(ScrnInfoPtr pScrn, int num, BoxPtr pbox)
{
CirPtr pCir = CIRPTR(pScrn);
int count, width, height, y1, y2, dstPitch, srcPitch;
CARD8 *dstPtr, *srcPtr, *src;
CARD32 *dst;
dstPitch = pScrn->displayWidth;
srcPitch = -pCir->rotate * pCir->ShadowPitch;
while(num--) {
width = pbox->x2 - pbox->x1;
y1 = pbox->y1 & ~3;
y2 = (pbox->y2 + 3) & ~3;
height = (y2 - y1) >> 2; /* in dwords */
if(pCir->rotate == 1) {
dstPtr = pCir->FbBase +
(pbox->x1 * dstPitch) + pScrn->virtualX - y2;
srcPtr = pCir->ShadowPtr + ((1 - y2) * srcPitch) + pbox->x1;
} else {
dstPtr = pCir->FbBase +
((pScrn->virtualY - pbox->x2) * dstPitch) + y1;
srcPtr = pCir->ShadowPtr + (y1 * srcPitch) + pbox->x2 - 1;
}
while(width--) {
src = srcPtr;
dst = (CARD32*)dstPtr;
count = height;
while(count--) {
*(dst++) = src[0] | (src[srcPitch] << 8) |
(src[srcPitch * 2] << 16) |
(src[srcPitch * 3] << 24);
src += srcPitch * 4;
}
srcPtr += pCir->rotate;
dstPtr += dstPitch;
}
pbox++;
}
}
void
cirRefreshArea16(ScrnInfoPtr pScrn, int num, BoxPtr pbox)
{
CirPtr pCir = CIRPTR(pScrn);
int count, width, height, y1, y2, dstPitch, srcPitch;
CARD16 *dstPtr, *srcPtr, *src;
CARD32 *dst;
dstPitch = pScrn->displayWidth;
srcPitch = -pCir->rotate * pCir->ShadowPitch >> 1;
while(num--) {
width = pbox->x2 - pbox->x1;
y1 = pbox->y1 & ~1;
y2 = (pbox->y2 + 1) & ~1;
height = (y2 - y1) >> 1; /* in dwords */
if(pCir->rotate == 1) {
dstPtr = (CARD16*)pCir->FbBase +
(pbox->x1 * dstPitch) + pScrn->virtualX - y2;
srcPtr = (CARD16*)pCir->ShadowPtr +
((1 - y2) * srcPitch) + pbox->x1;
} else {
dstPtr = (CARD16*)pCir->FbBase +
((pScrn->virtualY - pbox->x2) * dstPitch) + y1;
srcPtr = (CARD16*)pCir->ShadowPtr +
(y1 * srcPitch) + pbox->x2 - 1;
}
while(width--) {
src = srcPtr;
dst = (CARD32*)dstPtr;
count = height;
while(count--) {
*(dst++) = src[0] | (src[srcPitch] << 16);
src += srcPitch * 2;
}
srcPtr += pCir->rotate;
dstPtr += dstPitch;
}
pbox++;
}
}
/* this one could be faster */
void
cirRefreshArea24(ScrnInfoPtr pScrn, int num, BoxPtr pbox)
{
CirPtr pCir = CIRPTR(pScrn);
int count, width, height, y1, y2, dstPitch, srcPitch;
CARD8 *dstPtr, *srcPtr, *src;
CARD32 *dst;
dstPitch = BitmapBytePad(pScrn->displayWidth * 24);
srcPitch = -pCir->rotate * pCir->ShadowPitch;
while(num--) {
width = pbox->x2 - pbox->x1;
y1 = pbox->y1 & ~3;
y2 = (pbox->y2 + 3) & ~3;
height = (y2 - y1) >> 2; /* blocks of 3 dwords */
if(pCir->rotate == 1) {
dstPtr = pCir->FbBase +
(pbox->x1 * dstPitch) + ((pScrn->virtualX - y2) * 3);
srcPtr = pCir->ShadowPtr + ((1 - y2) * srcPitch) + (pbox->x1 * 3);
} else {
dstPtr = pCir->FbBase +
((pScrn->virtualY - pbox->x2) * dstPitch) + (y1 * 3);
srcPtr = pCir->ShadowPtr + (y1 * srcPitch) + (pbox->x2 * 3) - 3;
}
while(width--) {
src = srcPtr;
dst = (CARD32*)dstPtr;
count = height;
while(count--) {
dst[0] = src[0] | (src[1] << 8) | (src[2] << 16) |
(src[srcPitch] << 24);
dst[1] = src[srcPitch + 1] | (src[srcPitch + 2] << 8) |
(src[srcPitch * 2] << 16) |
(src[(srcPitch * 2) + 1] << 24);
dst[2] = src[(srcPitch * 2) + 2] | (src[srcPitch * 3] << 8) |
(src[(srcPitch * 3) + 1] << 16) |
(src[(srcPitch * 3) + 2] << 24);
dst += 3;
src += srcPitch * 4;
}
srcPtr += pCir->rotate * 3;
dstPtr += dstPitch;
}
pbox++;
}
}
void
cirRefreshArea32(ScrnInfoPtr pScrn, int num, BoxPtr pbox)
{
CirPtr pCir = CIRPTR(pScrn);
int count, width, height, dstPitch, srcPitch;
CARD32 *dstPtr, *srcPtr, *src, *dst;
dstPitch = pScrn->displayWidth;
srcPitch = -pCir->rotate * pCir->ShadowPitch >> 2;
while(num--) {
width = pbox->x2 - pbox->x1;
height = pbox->y2 - pbox->y1;
if(pCir->rotate == 1) {
dstPtr = (CARD32*)pCir->FbBase +
(pbox->x1 * dstPitch) + pScrn->virtualX - pbox->y2;
srcPtr = (CARD32*)pCir->ShadowPtr +
((1 - pbox->y2) * srcPitch) + pbox->x1;
} else {
dstPtr = (CARD32*)pCir->FbBase +
((pScrn->virtualY - pbox->x2) * dstPitch) + pbox->y1;
srcPtr = (CARD32*)pCir->ShadowPtr +
(pbox->y1 * srcPitch) + pbox->x2 - 1;
}
while(width--) {
src = srcPtr;
dst = dstPtr;
count = height;
while(count--) {
*(dst++) = *src;
src += srcPitch;
}
srcPtr += pCir->rotate;
dstPtr += dstPitch;
}
pbox++;
}
}
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