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-rw-r--r--hw/darwin/iokit/xfIOKitCursor.c735
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diff --git a/hw/darwin/iokit/xfIOKitCursor.c b/hw/darwin/iokit/xfIOKitCursor.c
new file mode 100644
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+++ b/hw/darwin/iokit/xfIOKitCursor.c
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+/**************************************************************
+ *
+ * Cursor support for Darwin X Server
+ *
+ * Three different cursor modes are possible:
+ * X (0) - tracking via Darwin kernel,
+ * display via X machine independent
+ * Kernel (1) - tracking and display via Darwin kernel
+ * (not currently supported)
+ * Hardware (2) - tracking and display via hardware
+ *
+ * The X software cursor uses the Darwin software cursor
+ * routines in IOFramebuffer.cpp to track the cursor, but
+ * displays the cursor image using the X machine
+ * independent display cursor routines in midispcur.c.
+ *
+ * The kernel cursor uses IOFramebuffer.cpp routines to
+ * track and display the cursor. This gives better
+ * performance as the display calls don't have to cross
+ * the kernel boundary. Unfortunately, this mode has
+ * synchronization issues with the user land X server
+ * and isn't currently used.
+ *
+ * Hardware cursor support lets the hardware handle these
+ * details.
+ *
+ * Kernel and hardware cursor mode only work for cursors
+ * up to a certain size, currently 16x16 pixels. If a
+ * bigger cursor is set, we fallback to X cursor mode.
+ *
+ * HISTORY:
+ * 1.0 by Torrey T. Lyons, October 30, 2000
+ *
+ **************************************************************/
+/*
+ * Copyright (c) 2001-2002 Torrey T. Lyons. 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE ABOVE LISTED COPYRIGHT HOLDER(S) 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(s) of the above copyright
+ * holders shall not be used in advertising or otherwise to promote the sale,
+ * use or other dealings in this Software without prior written authorization.
+ */
+/* $XFree86: xc/programs/Xserver/hw/darwin/iokit/xfIOKitCursor.c,v 1.1 2003/05/14 05:27:56 torrey Exp $ */
+
+#include "scrnintstr.h"
+#include "cursorstr.h"
+#include "mipointrst.h"
+#include "micmap.h"
+#define NO_CFPLUGIN
+#include <IOKit/graphics/IOGraphicsLib.h>
+#include <IOKit/hidsystem/IOHIDLib.h>
+#include "darwin.h"
+#include "xfIOKit.h"
+
+#define DUMP_DARWIN_CURSOR FALSE
+
+#define CURSOR_PRIV(pScreen) \
+ ((XFIOKitCursorScreenPtr)pScreen->devPrivates[darwinCursorScreenIndex].ptr)
+
+// The cursors format are documented in IOFramebufferShared.h.
+#define RGBto34WithGamma(red, green, blue) \
+ ( 0x000F \
+ | (((red) & 0xF) << 12) \
+ | (((green) & 0xF) << 8) \
+ | (((blue) & 0xF) << 4) )
+#define RGBto38WithGamma(red, green, blue) \
+ ( 0xFF << 24 \
+ | (((red) & 0xFF) << 16) \
+ | (((green) & 0xFF) << 8) \
+ | (((blue) & 0xFF)) )
+#define HighBitOf32 0x80000000
+
+typedef struct {
+ Bool canHWCursor;
+ short cursorMode;
+ RecolorCursorProcPtr RecolorCursor;
+ InstallColormapProcPtr InstallColormap;
+ QueryBestSizeProcPtr QueryBestSize;
+ miPointerSpriteFuncPtr spriteFuncs;
+ ColormapPtr pInstalledMap;
+} XFIOKitCursorScreenRec, *XFIOKitCursorScreenPtr;
+
+static int darwinCursorScreenIndex = -1;
+static unsigned long darwinCursorGeneration = 0;
+
+/*
+===========================================================================
+
+ Pointer sprite functions
+
+===========================================================================
+*/
+
+/*
+ Realizing the Darwin hardware cursor (ie. converting from the
+ X representation to the IOKit representation) is complicated
+ by the fact that we have three different potential cursor
+ formats to go to, one for each bit depth (8, 15, or 24).
+ The IOKit formats are documented in IOFramebufferShared.h.
+ X cursors are represented as two pieces, a source and a mask.
+ The mask is a bitmap indicating which parts of the cursor are
+ transparent and which parts are drawn. The source is a bitmap
+ indicating which parts of the non-transparent portion of the the
+ cursor should be painted in the foreground color and which should
+ be painted in the background color. The bitmaps are given in
+ 32-bit format with least significant byte and bit first.
+ (This is opposite PowerPC Darwin.)
+*/
+
+typedef struct {
+ unsigned char image[CURSORWIDTH*CURSORHEIGHT];
+ unsigned char mask[CURSORWIDTH*CURSORHEIGHT];
+} cursorPrivRec, *cursorPrivPtr;
+
+/*
+ * XFIOKitRealizeCursor8
+ * Convert the X cursor representation to an 8-bit depth
+ * format for Darwin. This function assumes the maximum cursor
+ * width is a multiple of 8.
+ */
+static Bool
+XFIOKitRealizeCursor8(
+ ScreenPtr pScreen,
+ CursorPtr pCursor)
+{
+ cursorPrivPtr newCursor;
+ unsigned char *newSourceP, *newMaskP;
+ CARD32 *oldSourceP, *oldMaskP;
+ xColorItem fgColor, bgColor;
+ int index, x, y, rowPad;
+ int cursorWidth, cursorHeight;
+ ColormapPtr pmap;
+
+ // check cursor size just to be sure
+ cursorWidth = pCursor->bits->width;
+ cursorHeight = pCursor->bits->height;
+ if (cursorHeight > CURSORHEIGHT || cursorWidth > CURSORWIDTH)
+ return FALSE;
+
+ // get cursor colors in colormap
+ index = pScreen->myNum;
+ pmap = miInstalledMaps[index];
+ if (!pmap) return FALSE;
+
+ fgColor.red = pCursor->foreRed;
+ fgColor.green = pCursor->foreGreen;
+ fgColor.blue = pCursor->foreBlue;
+ FakeAllocColor(pmap, &fgColor);
+ bgColor.red = pCursor->backRed;
+ bgColor.green = pCursor->backGreen;
+ bgColor.blue = pCursor->backBlue;
+ FakeAllocColor(pmap, &bgColor);
+ FakeFreeColor(pmap, fgColor.pixel);
+ FakeFreeColor(pmap, bgColor.pixel);
+
+ // allocate memory for new cursor image
+ newCursor = xalloc( sizeof(cursorPrivRec) );
+ if (!newCursor)
+ return FALSE;
+ memset( newCursor->image, pScreen->blackPixel, CURSORWIDTH*CURSORHEIGHT );
+ memset( newCursor->mask, 0, CURSORWIDTH*CURSORHEIGHT );
+
+ // convert to 8-bit Darwin cursor format
+ oldSourceP = (CARD32 *) pCursor->bits->source;
+ oldMaskP = (CARD32 *) pCursor->bits->mask;
+ newSourceP = newCursor->image;
+ newMaskP = newCursor->mask;
+ rowPad = CURSORWIDTH - cursorWidth;
+
+ for (y = 0; y < cursorHeight; y++) {
+ for (x = 0; x < cursorWidth; x++) {
+ if (*oldSourceP & (HighBitOf32 >> x))
+ *newSourceP = fgColor.pixel;
+ else
+ *newSourceP = bgColor.pixel;
+ if (*oldMaskP & (HighBitOf32 >> x))
+ *newMaskP = 255;
+ else
+ *newSourceP = pScreen->blackPixel;
+ newSourceP++; newMaskP++;
+ }
+ oldSourceP++; oldMaskP++;
+ newSourceP += rowPad; newMaskP += rowPad;
+ }
+
+ // save the result
+ pCursor->devPriv[pScreen->myNum] = (pointer) newCursor;
+ return TRUE;
+}
+
+
+/*
+ * XFIOKitRealizeCursor15
+ * Convert the X cursor representation to an 15-bit depth
+ * format for Darwin.
+ */
+static Bool
+XFIOKitRealizeCursor15(
+ ScreenPtr pScreen,
+ CursorPtr pCursor)
+{
+ unsigned short *newCursor;
+ unsigned short fgPixel, bgPixel;
+ unsigned short *newSourceP;
+ CARD32 *oldSourceP, *oldMaskP;
+ int x, y, rowPad;
+ int cursorWidth, cursorHeight;
+
+ // check cursor size just to be sure
+ cursorWidth = pCursor->bits->width;
+ cursorHeight = pCursor->bits->height;
+ if (cursorHeight > CURSORHEIGHT || cursorWidth > CURSORWIDTH)
+ return FALSE;
+
+ // allocate memory for new cursor image
+ newCursor = xalloc( CURSORWIDTH*CURSORHEIGHT*sizeof(short) );
+ if (!newCursor)
+ return FALSE;
+ memset( newCursor, 0, CURSORWIDTH*CURSORHEIGHT*sizeof(short) );
+
+ // calculate pixel values
+ fgPixel = RGBto34WithGamma( pCursor->foreRed, pCursor->foreGreen,
+ pCursor->foreBlue );
+ bgPixel = RGBto34WithGamma( pCursor->backRed, pCursor->backGreen,
+ pCursor->backBlue );
+
+ // convert to 15-bit Darwin cursor format
+ oldSourceP = (CARD32 *) pCursor->bits->source;
+ oldMaskP = (CARD32 *) pCursor->bits->mask;
+ newSourceP = newCursor;
+ rowPad = CURSORWIDTH - cursorWidth;
+
+ for (y = 0; y < cursorHeight; y++) {
+ for (x = 0; x < cursorWidth; x++) {
+ if (*oldMaskP & (HighBitOf32 >> x)) {
+ if (*oldSourceP & (HighBitOf32 >> x))
+ *newSourceP = fgPixel;
+ else
+ *newSourceP = bgPixel;
+ } else {
+ *newSourceP = 0;
+ }
+ newSourceP++;
+ }
+ oldSourceP++; oldMaskP++;
+ newSourceP += rowPad;
+ }
+
+#if DUMP_DARWIN_CURSOR
+ // Write out the cursor
+ ErrorF("Cursor: 0x%x\n", pCursor);
+ ErrorF("Width = %i, Height = %i, RowPad = %i\n", cursorWidth,
+ cursorHeight, rowPad);
+ for (y = 0; y < cursorHeight; y++) {
+ newSourceP = newCursor + y*CURSORWIDTH;
+ for (x = 0; x < cursorWidth; x++) {
+ if (*newSourceP == fgPixel)
+ ErrorF("x");
+ else if (*newSourceP == bgPixel)
+ ErrorF("o");
+ else
+ ErrorF(" ");
+ newSourceP++;
+ }
+ ErrorF("\n");
+ }
+#endif
+
+ // save the result
+ pCursor->devPriv[pScreen->myNum] = (pointer) newCursor;
+ return TRUE;
+}
+
+
+/*
+ * XFIOKitRealizeCursor24
+ * Convert the X cursor representation to an 24-bit depth
+ * format for Darwin. This function assumes the maximum cursor
+ * width is a multiple of 8.
+ */
+static Bool
+XFIOKitRealizeCursor24(
+ ScreenPtr pScreen,
+ CursorPtr pCursor)
+{
+ unsigned int *newCursor;
+ unsigned int fgPixel, bgPixel;
+ unsigned int *newSourceP;
+ CARD32 *oldSourceP, *oldMaskP;
+ int x, y, rowPad;
+ int cursorWidth, cursorHeight;
+
+ // check cursor size just to be sure
+ cursorWidth = pCursor->bits->width;
+ cursorHeight = pCursor->bits->height;
+ if (cursorHeight > CURSORHEIGHT || cursorWidth > CURSORWIDTH)
+ return FALSE;
+
+ // allocate memory for new cursor image
+ newCursor = xalloc( CURSORWIDTH*CURSORHEIGHT*sizeof(int) );
+ if (!newCursor)
+ return FALSE;
+ memset( newCursor, 0, CURSORWIDTH*CURSORHEIGHT*sizeof(int) );
+
+ // calculate pixel values
+ fgPixel = RGBto38WithGamma( pCursor->foreRed, pCursor->foreGreen,
+ pCursor->foreBlue );
+ bgPixel = RGBto38WithGamma( pCursor->backRed, pCursor->backGreen,
+ pCursor->backBlue );
+
+ // convert to 24-bit Darwin cursor format
+ oldSourceP = (CARD32 *) pCursor->bits->source;
+ oldMaskP = (CARD32 *) pCursor->bits->mask;
+ newSourceP = newCursor;
+ rowPad = CURSORWIDTH - cursorWidth;
+
+ for (y = 0; y < cursorHeight; y++) {
+ for (x = 0; x < cursorWidth; x++) {
+ if (*oldMaskP & (HighBitOf32 >> x)) {
+ if (*oldSourceP & (HighBitOf32 >> x))
+ *newSourceP = fgPixel;
+ else
+ *newSourceP = bgPixel;
+ } else {
+ *newSourceP = 0;
+ }
+ newSourceP++;
+ }
+ oldSourceP++; oldMaskP++;
+ newSourceP += rowPad;
+ }
+
+#if DUMP_DARWIN_CURSOR
+ // Write out the cursor
+ ErrorF("Cursor: 0x%x\n", pCursor);
+ ErrorF("Width = %i, Height = %i, RowPad = %i\n", cursorWidth,
+ cursorHeight, rowPad);
+ for (y = 0; y < cursorHeight; y++) {
+ newSourceP = newCursor + y*CURSORWIDTH;
+ for (x = 0; x < cursorWidth; x++) {
+ if (*newSourceP == fgPixel)
+ ErrorF("x");
+ else if (*newSourceP == bgPixel)
+ ErrorF("o");
+ else
+ ErrorF(" ");
+ newSourceP++;
+ }
+ ErrorF("\n");
+ }
+#endif
+
+ // save the result
+ pCursor->devPriv[pScreen->myNum] = (pointer) newCursor;
+ return TRUE;
+}
+
+
+/*
+ * XFIOKitRealizeCursor
+ *
+ */
+static Bool
+XFIOKitRealizeCursor(
+ ScreenPtr pScreen,
+ CursorPtr pCursor)
+{
+ Bool result;
+ XFIOKitCursorScreenPtr ScreenPriv = CURSOR_PRIV(pScreen);
+ DarwinFramebufferPtr dfb = SCREEN_PRIV(pScreen);
+
+ if ((pCursor->bits->height > CURSORHEIGHT) ||
+ (pCursor->bits->width > CURSORWIDTH) ||
+ // FIXME: this condition is not needed after kernel cursor works
+ !ScreenPriv->canHWCursor) {
+ result = (*ScreenPriv->spriteFuncs->RealizeCursor)(pScreen, pCursor);
+ } else if (dfb->bitsPerPixel == 8) {
+ result = XFIOKitRealizeCursor8(pScreen, pCursor);
+ } else if (dfb->bitsPerPixel == 16) {
+ result = XFIOKitRealizeCursor15(pScreen, pCursor);
+ } else {
+ result = XFIOKitRealizeCursor24(pScreen, pCursor);
+ }
+
+ return result;
+}
+
+
+/*
+ * XFIOKitUnrealizeCursor
+ *
+ */
+static Bool
+XFIOKitUnrealizeCursor(
+ ScreenPtr pScreen,
+ CursorPtr pCursor)
+{
+ Bool result;
+ XFIOKitCursorScreenPtr ScreenPriv = CURSOR_PRIV(pScreen);
+
+ if ((pCursor->bits->height > CURSORHEIGHT) ||
+ (pCursor->bits->width > CURSORWIDTH) ||
+ // FIXME: this condition is not needed after kernel cursor works
+ !ScreenPriv->canHWCursor) {
+ result = (*ScreenPriv->spriteFuncs->UnrealizeCursor)(pScreen, pCursor);
+ } else {
+ xfree( pCursor->devPriv[pScreen->myNum] );
+ result = TRUE;
+ }
+
+ return result;
+}
+
+
+/*
+ * XFIOKitSetCursor
+ * Set the cursor sprite and position
+ * Use hardware cursor if possible
+ */
+static void
+XFIOKitSetCursor(
+ ScreenPtr pScreen,
+ CursorPtr pCursor,
+ int x,
+ int y)
+{
+ kern_return_t kr;
+ DarwinFramebufferPtr dfb = SCREEN_PRIV(pScreen);
+ XFIOKitScreenPtr iokitScreen = XFIOKIT_SCREEN_PRIV(pScreen);
+ StdFBShmem_t *cshmem = iokitScreen->cursorShmem;
+ XFIOKitCursorScreenPtr ScreenPriv = CURSOR_PRIV(pScreen);
+
+ // are we supposed to remove the cursor?
+ if (!pCursor) {
+ if (ScreenPriv->cursorMode == 0)
+ (*ScreenPriv->spriteFuncs->SetCursor)(pScreen, 0, x, y);
+ else {
+ if (!cshmem->cursorShow) {
+ cshmem->cursorShow++;
+ if (cshmem->hardwareCursorActive) {
+ kr = IOFBSetCursorVisible(iokitScreen->fbService, FALSE);
+ kern_assert( kr );
+ }
+ }
+ }
+ return;
+ }
+
+ // can we use the kernel or hardware cursor?
+ if ((pCursor->bits->height <= CURSORHEIGHT) &&
+ (pCursor->bits->width <= CURSORWIDTH) &&
+ // FIXME: condition not needed when kernel cursor works
+ ScreenPriv->canHWCursor) {
+
+ if (ScreenPriv->cursorMode == 0) // remove the X cursor
+ (*ScreenPriv->spriteFuncs->SetCursor)(pScreen, 0, x, y);
+ ScreenPriv->cursorMode = 1; // kernel cursor
+
+ // change the cursor image in shared memory
+ if (dfb->bitsPerPixel == 8) {
+ cursorPrivPtr newCursor =
+ (cursorPrivPtr) pCursor->devPriv[pScreen->myNum];
+ memcpy(cshmem->cursor.bw8.image[0], newCursor->image,
+ CURSORWIDTH*CURSORHEIGHT);
+ memcpy(cshmem->cursor.bw8.mask[0], newCursor->mask,
+ CURSORWIDTH*CURSORHEIGHT);
+ } else if (dfb->bitsPerPixel == 16) {
+ unsigned short *newCursor =
+ (unsigned short *) pCursor->devPriv[pScreen->myNum];
+ memcpy(cshmem->cursor.rgb.image[0], newCursor,
+ 2*CURSORWIDTH*CURSORHEIGHT);
+ } else {
+ unsigned int *newCursor =
+ (unsigned int *) pCursor->devPriv[pScreen->myNum];
+ memcpy(cshmem->cursor.rgb24.image[0], newCursor,
+ 4*CURSORWIDTH*CURSORHEIGHT);
+ }
+
+ // FIXME: We always use a full size cursor, even if the image
+ // is smaller because I couldn't get the padding to come out
+ // right otherwise.
+ cshmem->cursorSize[0].width = CURSORWIDTH;
+ cshmem->cursorSize[0].height = CURSORHEIGHT;
+ cshmem->hotSpot[0].x = pCursor->bits->xhot;
+ cshmem->hotSpot[0].y = pCursor->bits->yhot;
+
+ // try to use a hardware cursor
+ if (ScreenPriv->canHWCursor) {
+ kr = IOFBSetNewCursor(iokitScreen->fbService, 0, 0, 0);
+ // FIXME: this is a fatal error without the kernel cursor
+ kern_assert( kr );
+#if 0
+ if (kr != KERN_SUCCESS) {
+ ErrorF("Could not set new cursor with kernel return 0x%x.\n", kr);
+ ScreenPriv->canHWCursor = FALSE;
+ }
+#endif
+ }
+
+ // make the new cursor visible
+ if (cshmem->cursorShow)
+ cshmem->cursorShow--;
+
+ if (!cshmem->cursorShow && ScreenPriv->canHWCursor) {
+ kr = IOFBSetCursorVisible(iokitScreen->fbService, TRUE);
+ // FIXME: this is a fatal error without the kernel cursor
+ kern_assert( kr );
+#if 0
+ if (kr != KERN_SUCCESS) {
+ ErrorF("Couldn't set hardware cursor visible with kernel return 0x%x.\n", kr);
+ ScreenPriv->canHWCursor = FALSE;
+ } else
+#endif
+ ScreenPriv->cursorMode = 2; // hardware cursor
+ }
+
+ return;
+ }
+
+ // otherwise we use a software cursor
+ if (ScreenPriv->cursorMode) {
+ /* remove the kernel or hardware cursor */
+ XFIOKitSetCursor(pScreen, 0, x, y);
+ }
+
+ ScreenPriv->cursorMode = 0;
+ (*ScreenPriv->spriteFuncs->SetCursor)(pScreen, pCursor, x, y);
+}
+
+
+/*
+ * XFIOKitMoveCursor
+ * Move the cursor. This is a noop for a kernel or hardware cursor.
+ */
+static void
+XFIOKitMoveCursor(
+ ScreenPtr pScreen,
+ int x,
+ int y)
+{
+ XFIOKitCursorScreenPtr ScreenPriv = CURSOR_PRIV(pScreen);
+
+ // only the X cursor needs to be explicitly moved
+ if (!ScreenPriv->cursorMode)
+ (*ScreenPriv->spriteFuncs->MoveCursor)(pScreen, x, y);
+}
+
+static miPointerSpriteFuncRec darwinSpriteFuncsRec = {
+ XFIOKitRealizeCursor,
+ XFIOKitUnrealizeCursor,
+ XFIOKitSetCursor,
+ XFIOKitMoveCursor
+};
+
+
+/*
+===========================================================================
+
+ Pointer screen functions
+
+===========================================================================
+*/
+
+/*
+ * XFIOKitCursorOffScreen
+ */
+static Bool XFIOKitCursorOffScreen(ScreenPtr *pScreen, int *x, int *y)
+{ return FALSE;
+}
+
+
+/*
+ * XFIOKitCrossScreen
+ */
+static void XFIOKitCrossScreen(ScreenPtr pScreen, Bool entering)
+{ return;
+}
+
+
+/*
+ * XFIOKitWarpCursor
+ * Change the cursor position without generating an event or motion history
+ */
+static void
+XFIOKitWarpCursor(
+ ScreenPtr pScreen,
+ int x,
+ int y)
+{
+ kern_return_t kr;
+
+ kr = IOHIDSetMouseLocation( xfIOKitInputConnect, x, y );
+ if (kr != KERN_SUCCESS) {
+ ErrorF("Could not set cursor position with kernel return 0x%x.\n", kr);
+ }
+ miPointerWarpCursor(pScreen, x, y);
+}
+
+static miPointerScreenFuncRec darwinScreenFuncsRec = {
+ XFIOKitCursorOffScreen,
+ XFIOKitCrossScreen,
+ XFIOKitWarpCursor,
+ DarwinEQPointerPost,
+ DarwinEQSwitchScreen
+};
+
+
+/*
+===========================================================================
+
+ Other screen functions
+
+===========================================================================
+*/
+
+/*
+ * XFIOKitCursorQueryBestSize
+ * Handle queries for best cursor size
+ */
+static void
+XFIOKitCursorQueryBestSize(
+ int class,
+ unsigned short *width,
+ unsigned short *height,
+ ScreenPtr pScreen)
+{
+ XFIOKitCursorScreenPtr ScreenPriv = CURSOR_PRIV(pScreen);
+
+ if (class == CursorShape) {
+ *width = CURSORWIDTH;
+ *height = CURSORHEIGHT;
+ } else
+ (*ScreenPriv->QueryBestSize)(class, width, height, pScreen);
+}
+
+
+/*
+ * XFIOKitInitCursor
+ * Initialize cursor support
+ */
+Bool
+XFIOKitInitCursor(
+ ScreenPtr pScreen)
+{
+ XFIOKitScreenPtr iokitScreen = XFIOKIT_SCREEN_PRIV(pScreen);
+ XFIOKitCursorScreenPtr ScreenPriv;
+ miPointerScreenPtr PointPriv;
+ kern_return_t kr;
+
+ // start with no cursor displayed
+ if (!iokitScreen->cursorShmem->cursorShow++) {
+ if (iokitScreen->cursorShmem->hardwareCursorActive) {
+ kr = IOFBSetCursorVisible(iokitScreen->fbService, FALSE);
+ kern_assert( kr );
+ }
+ }
+
+ // initialize software cursor handling (always needed as backup)
+ if (!miDCInitialize(pScreen, &darwinScreenFuncsRec)) {
+ return FALSE;
+ }
+
+ // allocate private storage for this screen's hardware cursor info
+ if (darwinCursorGeneration != serverGeneration) {
+ if ((darwinCursorScreenIndex = AllocateScreenPrivateIndex()) < 0)
+ return FALSE;
+ darwinCursorGeneration = serverGeneration;
+ }
+
+ ScreenPriv = xcalloc( 1, sizeof(XFIOKitCursorScreenRec) );
+ if (!ScreenPriv) return FALSE;
+
+ pScreen->devPrivates[darwinCursorScreenIndex].ptr = (pointer) ScreenPriv;
+
+ // check if a hardware cursor is supported
+ if (!iokitScreen->cursorShmem->hardwareCursorCapable) {
+ ScreenPriv->canHWCursor = FALSE;
+ ErrorF("Hardware cursor not supported.\n");
+ } else {
+ // we need to make sure that the hardware cursor really works
+ ScreenPriv->canHWCursor = TRUE;
+ kr = IOFBSetNewCursor(iokitScreen->fbService, 0, 0, 0);
+ if (kr != KERN_SUCCESS) {
+ ErrorF("Could not set hardware cursor with kernel return 0x%x.\n", kr);
+ ScreenPriv->canHWCursor = FALSE;
+ }
+ kr = IOFBSetCursorVisible(iokitScreen->fbService, TRUE);
+ if (kr != KERN_SUCCESS) {
+ ErrorF("Couldn't set hardware cursor visible with kernel return 0x%x.\n", kr);
+ ScreenPriv->canHWCursor = FALSE;
+ }
+ IOFBSetCursorVisible(iokitScreen->fbService, FALSE);
+ }
+
+ ScreenPriv->cursorMode = 0;
+ ScreenPriv->pInstalledMap = NULL;
+
+ // override some screen procedures
+ ScreenPriv->QueryBestSize = pScreen->QueryBestSize;
+ pScreen->QueryBestSize = XFIOKitCursorQueryBestSize;
+// ScreenPriv->ConstrainCursor = pScreen->ConstrainCursor;
+// pScreen->ConstrainCursor = XFIOKitConstrainCursor;
+
+ // initialize hardware cursor handling
+ PointPriv = (miPointerScreenPtr)
+ pScreen->devPrivates[miPointerScreenIndex].ptr;
+
+ ScreenPriv->spriteFuncs = PointPriv->spriteFuncs;
+ PointPriv->spriteFuncs = &darwinSpriteFuncsRec;
+
+ /* Other routines that might be overridden */
+/*
+ CursorLimitsProcPtr CursorLimits;
+ RecolorCursorProcPtr RecolorCursor;
+*/
+
+ return TRUE;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-11 22:01:35 +0000