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-rw-r--r--src/s3_shadow.c274
1 files changed, 274 insertions, 0 deletions
diff --git a/src/s3_shadow.c b/src/s3_shadow.c
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--- /dev/null
+++ b/src/s3_shadow.c
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+/*
+Copyright (C) 1994-2000 The XFree86 Project, Inc. All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FIT-
+NESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+XFREE86 PROJECT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of the XFree86 Project shall not
+be used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from the XFree86 Project.
+*/
+
+/*
+ Copyright (c) 1999,2000 The XFree86 Project Inc.
+ based on code written by Mark Vojkovich <markv@valinux.com>
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "xf86.h"
+#include "xf86_OSproc.h"
+#include "xf86Resources.h"
+#include "xf86PciInfo.h"
+#include "xf86Pci.h"
+#include "shadowfb.h"
+#include "servermd.h"
+#include "s3.h"
+
+
+void
+S3RefreshArea(ScrnInfoPtr pScrn, int num, BoxPtr pbox)
+{
+ S3Ptr pS3 = S3PTR(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 = pS3->ShadowPtr + (pbox->y1 * pS3->ShadowPitch) +
+ (pbox->x1 * Bpp);
+ dst = pS3->FBBase + (pbox->y1 * FBPitch) + (pbox->x1 * Bpp);
+
+ while(height--) {
+ memcpy(dst, src, width);
+ dst += FBPitch;
+ src += pS3->ShadowPitch;
+ }
+
+ pbox++;
+ }
+}
+
+void
+S3PointerMoved(int index, int x, int y)
+{
+ ScrnInfoPtr pScrn = xf86Screens[index];
+ S3Ptr pS3 = S3PTR(pScrn);
+ int newX, newY;
+
+ if(pS3->rotate == 1) {
+ newX = pScrn->pScreen->height - y - 1;
+ newY = x;
+ } else {
+ newX = y;
+ newY = pScrn->pScreen->width - x - 1;
+ }
+
+ (*pS3->PointerMoved)(index, newX, newY);
+}
+
+void
+S3RefreshArea8(ScrnInfoPtr pScrn, int num, BoxPtr pbox)
+{
+ S3Ptr pS3 = S3PTR(pScrn);
+ int count, width, height, y1, y2, dstPitch, srcPitch;
+ CARD8 *dstPtr, *srcPtr, *src;
+ CARD32 *dst;
+
+ dstPitch = pScrn->displayWidth;
+ srcPitch = -pS3->rotate * pS3->ShadowPitch;
+
+ while(num--) {
+ width = pbox->x2 - pbox->x1;
+ y1 = pbox->y1 & ~3;
+ y2 = (pbox->y2 + 3) & ~3;
+ height = (y2 - y1) >> 2; /* in dwords */
+
+ if(pS3->rotate == 1) {
+ dstPtr = pS3->FBBase +
+ (pbox->x1 * dstPitch) + pScrn->virtualX - y2;
+ srcPtr = pS3->ShadowPtr + ((1 - y2) * srcPitch) + pbox->x1;
+ } else {
+ dstPtr = pS3->FBBase +
+ ((pScrn->virtualY - pbox->x2) * dstPitch) + y1;
+ srcPtr = pS3->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 += pS3->rotate;
+ dstPtr += dstPitch;
+ }
+
+ pbox++;
+ }
+}
+
+
+void
+S3RefreshArea16(ScrnInfoPtr pScrn, int num, BoxPtr pbox)
+{
+ S3Ptr pS3 = S3PTR(pScrn);
+ int count, width, height, y1, y2, dstPitch, srcPitch;
+ CARD16 *dstPtr, *srcPtr, *src;
+ CARD32 *dst;
+
+ dstPitch = pScrn->displayWidth;
+ srcPitch = -pS3->rotate * pS3->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(pS3->rotate == 1) {
+ dstPtr = (CARD16*)pS3->FBBase +
+ (pbox->x1 * dstPitch) + pScrn->virtualX - y2;
+ srcPtr = (CARD16*)pS3->ShadowPtr +
+ ((1 - y2) * srcPitch) + pbox->x1;
+ } else {
+ dstPtr = (CARD16*)pS3->FBBase +
+ ((pScrn->virtualY - pbox->x2) * dstPitch) + y1;
+ srcPtr = (CARD16*)pS3->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 += pS3->rotate;
+ dstPtr += dstPitch;
+ }
+
+ pbox++;
+ }
+}
+
+
+/* this one could be faster */
+void
+S3RefreshArea24(ScrnInfoPtr pScrn, int num, BoxPtr pbox)
+{
+ S3Ptr pS3 = S3PTR(pScrn);
+ int count, width, height, y1, y2, dstPitch, srcPitch;
+ CARD8 *dstPtr, *srcPtr, *src;
+ CARD32 *dst;
+
+ dstPitch = BitmapBytePad(pScrn->displayWidth * 24);
+ srcPitch = -pS3->rotate * pS3->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(pS3->rotate == 1) {
+ dstPtr = pS3->FBBase +
+ (pbox->x1 * dstPitch) + ((pScrn->virtualX - y2) * 3);
+ srcPtr = pS3->ShadowPtr + ((1 - y2) * srcPitch) + (pbox->x1 * 3);
+ } else {
+ dstPtr = pS3->FBBase +
+ ((pScrn->virtualY - pbox->x2) * dstPitch) + (y1 * 3);
+ srcPtr = pS3->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 += pS3->rotate * 3;
+ dstPtr += dstPitch;
+ }
+
+ pbox++;
+ }
+}
+
+void
+S3RefreshArea32(ScrnInfoPtr pScrn, int num, BoxPtr pbox)
+{
+ S3Ptr pS3 = S3PTR(pScrn);
+ int count, width, height, dstPitch, srcPitch;
+ CARD32 *dstPtr, *srcPtr, *src, *dst;
+
+ dstPitch = pScrn->displayWidth;
+ srcPitch = -pS3->rotate * pS3->ShadowPitch >> 2;
+
+ while(num--) {
+ width = pbox->x2 - pbox->x1;
+ height = pbox->y2 - pbox->y1;
+
+ if(pS3->rotate == 1) {
+ dstPtr = (CARD32*)pS3->FBBase +
+ (pbox->x1 * dstPitch) + pScrn->virtualX - pbox->y2;
+ srcPtr = (CARD32*)pS3->ShadowPtr +
+ ((1 - pbox->y2) * srcPitch) + pbox->x1;
+ } else {
+ dstPtr = (CARD32*)pS3->FBBase +
+ ((pScrn->virtualY - pbox->x2) * dstPitch) + pbox->y1;
+ srcPtr = (CARD32*)pS3->ShadowPtr +
+ (pbox->y1 * srcPitch) + pbox->x2 - 1;
+ }
+
+ while(width--) {
+ src = srcPtr;
+ dst = dstPtr;
+ count = height;
+ while(count--) {
+ *(dst++) = *src;
+ src += srcPitch;
+ }
+ srcPtr += pS3->rotate;
+ dstPtr += dstPitch;
+ }
+
+ pbox++;
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-09-26 21:30:50 +0000