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-rw-r--r--trunk/src/via_shadow.c313
1 files changed, 313 insertions, 0 deletions
diff --git a/trunk/src/via_shadow.c b/trunk/src/via_shadow.c
new file mode 100644
index 000000000000..4b2d5873f49e
--- /dev/null
+++ b/trunk/src/via_shadow.c
@@ -0,0 +1,313 @@
+/*
+ * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
+ * Copyright 2001-2003 S3 Graphics, 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, sub license,
+ * 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 (including the
+ * next paragraph) 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "via.h"
+#include "via_driver.h"
+#include "shadowfb.h"
+#include "servermd.h"
+
+
+static void
+VIARefreshArea(ScrnInfoPtr pScrn, int num, BoxPtr pbox)
+{
+ VIAPtr pVia = VIAPTR(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 = pVia->ShadowPtr + (pbox->y1 * pVia->ShadowPitch) +
+ (pbox->x1 * Bpp);
+ dst = pVia->FBBase + (pbox->y1 * FBPitch) + (pbox->x1 * Bpp);
+
+ while (height--) {
+ memcpy(dst, src, width);
+ dst += FBPitch;
+ src += pVia->ShadowPitch;
+ }
+
+ pbox++;
+ }
+}
+
+
+static void
+VIAPointerMoved(int index, int x, int y)
+{
+ ScrnInfoPtr pScrn = xf86Screens[index];
+ VIAPtr pVia = VIAPTR(pScrn);
+ int newX, newY;
+
+ if (pVia->rotate == 1) {
+ newX = pScrn->pScreen->height - y - 1;
+ newY = x;
+ }
+ else {
+ newX = y;
+ newY = pScrn->pScreen->width - x - 1;
+
+ }
+
+ (*pVia->PointerMoved)(index, newX, newY);
+}
+
+
+static void
+VIARefreshArea8(ScrnInfoPtr pScrn, int num, BoxPtr pbox)
+{
+ VIAPtr pVia = VIAPTR(pScrn);
+ int count, width, height, y1, y2, dstPitch, srcPitch;
+ CARD8 *dstPtr, *srcPtr, *src;
+ CARD32 *dst;
+
+ dstPitch = pScrn->displayWidth;
+ srcPitch = -pVia->rotate * pVia->ShadowPitch;
+
+ while (num--) {
+ width = pbox->x2 - pbox->x1;
+ y1 = pbox->y1 & ~3;
+ y2 = (pbox->y2 + 3) & ~3;
+ height = (y2 - y1) >> 2; /* in dwords */
+
+ if (pVia->rotate == 1) {
+ dstPtr = pVia->FBBase + (pbox->x1 * dstPitch) +
+ pScrn->virtualX - y2;
+ srcPtr = pVia->ShadowPtr + ((1 - y2) * srcPitch) + pbox->x1;
+ }
+ else {
+ dstPtr = pVia->FBBase +
+ ((pScrn->virtualY - pbox->x2) * dstPitch) + y1;
+ srcPtr = pVia->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 += pVia->rotate;
+ dstPtr += dstPitch;
+ }
+
+ pbox++;
+ }
+}
+
+
+static void
+VIARefreshArea16(ScrnInfoPtr pScrn, int num, BoxPtr pbox)
+{
+ VIAPtr pVia = VIAPTR(pScrn);
+ int count, width, height, y1, y2, dstPitch, srcPitch;
+ CARD16 *dstPtr, *srcPtr, *src;
+ CARD32 *dst;
+
+ dstPitch = pScrn->displayWidth;
+ srcPitch = -pVia->rotate * pVia->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 (pVia->rotate == 1) {
+ dstPtr = (CARD16*)pVia->FBBase +
+ (pbox->x1 * dstPitch) + pScrn->virtualX - y2;
+ srcPtr = (CARD16*)pVia->ShadowPtr +
+ ((1 - y2) * srcPitch) + pbox->x1;
+ }
+ else {
+ dstPtr = (CARD16*)pVia->FBBase +
+ ((pScrn->virtualY - pbox->x2) * dstPitch) + y1;
+ srcPtr = (CARD16*)pVia->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 += pVia->rotate;
+ dstPtr += dstPitch;
+ }
+
+ pbox++;
+ }
+}
+
+#ifdef UNUSED
+/* this one could be faster */
+void
+VIARefreshArea24(ScrnInfoPtr pScrn, int num, BoxPtr pbox)
+{
+ VIAPtr pVia = VIAPTR(pScrn);
+ int count, width, height, y1, y2, dstPitch, srcPitch;
+ CARD8 *dstPtr, *srcPtr, *src;
+ CARD32 *dst;
+
+ dstPitch = BitmapBytePad(pScrn->displayWidth * 24);
+ srcPitch = -pVia->rotate * pVia->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 (pVia->rotate == 1) {
+ dstPtr = pVia->FBBase +
+ (pbox->x1 * dstPitch) + ((pScrn->virtualX - y2) * 3);
+ srcPtr = pVia->ShadowPtr + ((1 - y2) * srcPitch) + (pbox->x1 * 3);
+ }
+ else {
+ dstPtr = pVia->FBBase +
+ ((pScrn->virtualY - pbox->x2) * dstPitch) + (y1 * 3);
+ srcPtr = pVia->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 += pVia->rotate * 3;
+ dstPtr += dstPitch;
+ }
+
+ pbox++;
+ }
+}
+#endif /* UNUSED */
+
+static void
+VIARefreshArea32(ScrnInfoPtr pScrn, int num, BoxPtr pbox)
+{
+ VIAPtr pVia = VIAPTR(pScrn);
+ int count, width, height, dstPitch, srcPitch;
+ CARD32 *dstPtr, *srcPtr, *src, *dst;
+
+ dstPitch = pScrn->displayWidth;
+ srcPitch = -pVia->rotate * pVia->ShadowPitch >> 2;
+
+ while (num--) {
+ width = pbox->x2 - pbox->x1;
+ height = pbox->y2 - pbox->y1;
+
+ if (pVia->rotate == 1) {
+ dstPtr = (CARD32*)pVia->FBBase +
+ (pbox->x1 * dstPitch) + pScrn->virtualX - pbox->y2;
+ srcPtr = (CARD32*)pVia->ShadowPtr +
+ ((1 - pbox->y2) * srcPitch) + pbox->x1;
+ }
+ else {
+ dstPtr = (CARD32*)pVia->FBBase +
+ ((pScrn->virtualY - pbox->x2) * dstPitch) + pbox->y1;
+ srcPtr = (CARD32*)pVia->ShadowPtr +
+ (pbox->y1 * srcPitch) + pbox->x2 - 1;
+ }
+
+ while(width--) {
+ src = srcPtr;
+ dst = dstPtr;
+ count = height;
+
+ while(count--) {
+ *(dst++) = *src;
+ src += srcPitch;
+ }
+
+ srcPtr += pVia->rotate;
+ dstPtr += dstPitch;
+ }
+
+ pbox++;
+ }
+}
+
+/*
+ *
+ */
+void
+ViaShadowFBInit(ScrnInfoPtr pScrn, ScreenPtr pScreen)
+{
+ VIAPtr pVia = VIAPTR(pScrn);
+ RefreshAreaFuncPtr refreshArea = VIARefreshArea;
+
+ if (pVia->rotate) {
+ if (!pVia->PointerMoved) {
+ pVia->PointerMoved = pScrn->PointerMoved;
+ pScrn->PointerMoved = VIAPointerMoved;
+ }
+
+ switch(pScrn->bitsPerPixel) {
+ case 8:
+ refreshArea = VIARefreshArea8;
+ break;
+ case 16:
+ refreshArea = VIARefreshArea16;
+ break;
+ case 32:
+ refreshArea = VIARefreshArea32;
+ break;
+ }
+ }
+
+ ShadowFBInit(pScreen, refreshArea);
+ xf86DrvMsg(pScrn->scrnIndex, X_INFO, "ShadowFB initialised.\n");
+}
+
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