1 files changed, 525 insertions, 525 deletions

diff --git a/xorg-server/hw/xfree86/modes/xf86Rotate.c b/xorg-server/hw/xfree86/modes/xf86Rotate.c
index 57c3499ac..655857597 100644
--- a/xorg-server/hw/xfree86/modes/xf86Rotate.c
+++ b/xorg-server/hw/xfree86/modes/xf86Rotate.c
@@ -1,525 +1,525 @@
-/*
- * Copyright © 2006 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 the copyright holders not be used in advertising or
- * publicity pertaining to distribution of the software without specific,
- * written prior permission.  The copyright holders make no representations
- * about the suitability of this software for any purpose.  It is provided "as
- * is" without express or implied warranty.
- *
- * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL THE COPYRIGHT HOLDERS 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_XORG_CONFIG_H
-#include <xorg-config.h>
-#else
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#endif
-
-#include <stddef.h>
-#include <string.h>
-#include <stdio.h>
-
-#include "xf86.h"
-#include "xf86DDC.h"
-#include "fb.h"
-#include "windowstr.h"
-#include "xf86Crtc.h"
-#include "xf86Modes.h"
-#include "xf86RandR12.h"
-#include "X11/extensions/render.h"
-#include "X11/extensions/dpmsconst.h"
-#include "X11/Xatom.h"
-
-/* borrowed from composite extension, move to Render and publish? */
-
-static VisualPtr
-compGetWindowVisual (WindowPtr pWin)
-{
-    ScreenPtr	    pScreen = pWin->drawable.pScreen;
-    VisualID	    vid = wVisual (pWin);
-    int		    i;
-
-    for (i = 0; i < pScreen->numVisuals; i++)
-	if (pScreen->visuals[i].vid == vid)
-	    return &pScreen->visuals[i];
-    return 0;
-}
-
-static PictFormatPtr
-compWindowFormat (WindowPtr pWin)
-{
-    ScreenPtr	pScreen = pWin->drawable.pScreen;
-    
-    return PictureMatchVisual (pScreen, pWin->drawable.depth,
-			       compGetWindowVisual (pWin));
-}
-
-#define F(x)	IntToxFixed(x)
-
-#define toF(x)	((float) (x) / 65536.0f)
-
-static void
-xf86RotateCrtcRedisplay (xf86CrtcPtr crtc, RegionPtr region)
-{
-    ScrnInfoPtr		scrn = crtc->scrn;
-    ScreenPtr		screen = scrn->pScreen;
-    WindowPtr		root = screen->root;
-    PixmapPtr		dst_pixmap = crtc->rotatedPixmap;
-    PictFormatPtr	format = compWindowFormat (screen->root);
-    int			error;
-    PicturePtr		src, dst;
-    int			n = RegionNumRects(region);
-    BoxPtr		b = RegionRects(region);
-    XID			include_inferiors = IncludeInferiors;
-    
-    src = CreatePicture (None,
-			 &root->drawable,
-			 format,
-			 CPSubwindowMode,
-			 &include_inferiors,
-			 serverClient,
-			 &error);
-    if (!src)
-	return;
-
-    dst = CreatePicture (None,
-			 &dst_pixmap->drawable,
-			 format,
-			 0L,
-			 NULL,
-			 serverClient,
-			 &error);
-    if (!dst)
-	return;
-
-    error = SetPictureTransform (src, &crtc->crtc_to_framebuffer);
-    if (error)
-	return;
-    if (crtc->transform_in_use && crtc->filter)
-	SetPicturePictFilter (src, crtc->filter,
-			      crtc->params, crtc->nparams);
-
-    if (crtc->shadowClear)
-    {
-	CompositePicture (PictOpSrc,
-			  src, NULL, dst,
-			  0, 0, 0, 0, 0, 0,
-			  crtc->mode.HDisplay, crtc->mode.VDisplay);
-	crtc->shadowClear = FALSE;
-    }
-    else
-    {
-	while (n--)
-	{
-	    BoxRec	dst_box;
-
-	    dst_box = *b;
-	    dst_box.x1 -= crtc->filter_width >> 1;
-	    dst_box.x2 += crtc->filter_width >> 1;
-	    dst_box.y1 -= crtc->filter_height >> 1;
-	    dst_box.y2 += crtc->filter_height >> 1;
-	    pixman_f_transform_bounds (&crtc->f_framebuffer_to_crtc, &dst_box);
-	    CompositePicture (PictOpSrc,
-			      src, NULL, dst,
-			      dst_box.x1, dst_box.y1, 0, 0, dst_box.x1, dst_box.y1,
-			      dst_box.x2 - dst_box.x1,
-			      dst_box.y2 - dst_box.y1);
-	    b++;
-	}
-    }
-    FreePicture (src, None);
-    FreePicture (dst, None);
-}
-
-static void
-xf86CrtcDamageShadow (xf86CrtcPtr crtc)
-{
-    ScrnInfoPtr	pScrn = crtc->scrn;
-    BoxRec	damage_box;
-    RegionRec   damage_region;
-    ScreenPtr	pScreen = pScrn->pScreen;
-
-    damage_box.x1 = 0;
-    damage_box.x2 = crtc->mode.HDisplay;
-    damage_box.y1 = 0;
-    damage_box.y2 = crtc->mode.VDisplay;
-    if (!pixman_transform_bounds (&crtc->crtc_to_framebuffer, &damage_box))
-    {
-	damage_box.x1 = 0;
-	damage_box.y1 = 0;
-	damage_box.x2 = pScreen->width;
-	damage_box.y2 = pScreen->height;
-    }
-    if (damage_box.x1 < 0) damage_box.x1 = 0;
-    if (damage_box.y1 < 0) damage_box.y1 = 0;
-    if (damage_box.x2 > pScreen->width) damage_box.x2 = pScreen->width;
-    if (damage_box.y2 > pScreen->height) damage_box.y2 = pScreen->height;
-    RegionInit(&damage_region, &damage_box, 1);
-    DamageDamageRegion (&(*pScreen->GetScreenPixmap)(pScreen)->drawable,
-			&damage_region);
-    RegionUninit(&damage_region);
-    crtc->shadowClear = TRUE;
-}
-
-static void
-xf86RotatePrepare (ScreenPtr pScreen)
-{
-    ScrnInfoPtr		pScrn = xf86Screens[pScreen->myNum];
-    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
-    int			c;
-
-    for (c = 0; c < xf86_config->num_crtc; c++)
-    {
-	xf86CrtcPtr crtc = xf86_config->crtc[c];
-	
-	if (crtc->rotatedData && !crtc->rotatedPixmap)
-	{
-	    crtc->rotatedPixmap = crtc->funcs->shadow_create (crtc,
-							     crtc->rotatedData,
-							     crtc->mode.HDisplay,
-							     crtc->mode.VDisplay);
-	    if (!xf86_config->rotation_damage_registered)
-	    {
-		/* Hook damage to screen pixmap */
-		DamageRegister (&(*pScreen->GetScreenPixmap)(pScreen)->drawable,
-				xf86_config->rotation_damage);
-		xf86_config->rotation_damage_registered = TRUE;
-		EnableLimitedSchedulingLatency();
-	    }
-	    
-	    xf86CrtcDamageShadow (crtc);
-	}
-    }
-}
-
-static Bool
-xf86RotateRedisplay(ScreenPtr pScreen)
-{
-    ScrnInfoPtr		pScrn = xf86Screens[pScreen->myNum];
-    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
-    DamagePtr		damage = xf86_config->rotation_damage;
-    RegionPtr		region;
-
-    if (!damage)
-	return FALSE;
-    xf86RotatePrepare (pScreen);
-    region = DamageRegion(damage);
-    if (RegionNotEmpty(region))
-    {
-	int			c;
-	SourceValidateProcPtr	SourceValidate;
-
-	/*
-	 * SourceValidate is used by the software cursor code
-	 * to pull the cursor off of the screen when reading
-	 * bits from the frame buffer. Bypassing this function
-	 * leaves the software cursor in place
-	 */
-	SourceValidate = pScreen->SourceValidate;
-	pScreen->SourceValidate = NULL;
-
-	for (c = 0; c < xf86_config->num_crtc; c++)
-	{
-	    xf86CrtcPtr	    crtc = xf86_config->crtc[c];
-
-	    if (crtc->transform_in_use && crtc->enabled)
-	    {
-		RegionRec   crtc_damage;
-
-		/* compute portion of damage that overlaps crtc */
-		RegionInit(&crtc_damage, &crtc->bounds, 1);
-		RegionIntersect(&crtc_damage, &crtc_damage, region);
-		
-		/* update damaged region */
-		if (RegionNotEmpty(&crtc_damage))
-    		    xf86RotateCrtcRedisplay (crtc, &crtc_damage);
-		
-		RegionUninit(&crtc_damage);
-	    }
-	}
-	pScreen->SourceValidate = SourceValidate;
-	DamageEmpty(damage);
-    }
-    return TRUE;
-}
-
-static void
-xf86RotateBlockHandler(int screenNum, pointer blockData,
-		       pointer pTimeout, pointer pReadmask)
-{
-    ScreenPtr		pScreen = screenInfo.screens[screenNum];
-    ScrnInfoPtr		pScrn = xf86Screens[screenNum];
-    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
-    Bool		rotation_active;
-
-    rotation_active = xf86RotateRedisplay(pScreen);
-    pScreen->BlockHandler = xf86_config->BlockHandler;
-    (*pScreen->BlockHandler) (screenNum, blockData, pTimeout, pReadmask);
-    /* cannot avoid re-wrapping until all wrapping is audited */
-    xf86_config->BlockHandler = pScreen->BlockHandler;
-    pScreen->BlockHandler = xf86RotateBlockHandler;
-}
-
-void
-xf86RotateDestroy (xf86CrtcPtr crtc)
-{
-    ScrnInfoPtr		pScrn = crtc->scrn;
-    ScreenPtr		pScreen = pScrn->pScreen;
-    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
-    int			c;
-    
-    /* Free memory from rotation */
-    if (crtc->rotatedPixmap || crtc->rotatedData)
-    {
-	crtc->funcs->shadow_destroy (crtc, crtc->rotatedPixmap, crtc->rotatedData);
-	crtc->rotatedPixmap = NULL;
-	crtc->rotatedData = NULL;
-    }
-
-    for (c = 0; c < xf86_config->num_crtc; c++)
-	if (xf86_config->crtc[c]->transform_in_use)
-	    return;
-
-    /*
-     * Clean up damage structures when no crtcs are rotated
-     */
-    if (xf86_config->rotation_damage)
-    {
-	/* Free damage structure */
-	if (xf86_config->rotation_damage_registered)
-	{
-	    DamageUnregister (&(*pScreen->GetScreenPixmap)(pScreen)->drawable,
-			      xf86_config->rotation_damage);
-	    xf86_config->rotation_damage_registered = FALSE;
-	    DisableLimitedSchedulingLatency();
-	}
-	DamageDestroy (xf86_config->rotation_damage);
-	xf86_config->rotation_damage = NULL;
-    }
-}
-
-void
-xf86RotateFreeShadow(ScrnInfoPtr pScrn)
-{
-    xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(pScrn);
-    int c;
-
-   for (c = 0; c < config->num_crtc; c++) {
-       xf86CrtcPtr crtc = config->crtc[c];
-
-       if (crtc->rotatedPixmap || crtc->rotatedData) {
-	   crtc->funcs->shadow_destroy(crtc, crtc->rotatedPixmap,
-				crtc->rotatedData);
-	   crtc->rotatedPixmap = NULL;
-	   crtc->rotatedData = NULL;
-       }
-   }
-}
-
-void
-xf86RotateCloseScreen (ScreenPtr screen)
-{
-    ScrnInfoPtr		scrn = xf86Screens[screen->myNum];
-    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
-    int			c;
-
-    for (c = 0; c < xf86_config->num_crtc; c++)
-	xf86RotateDestroy (xf86_config->crtc[c]);
-}
-
-static Bool
-xf86CrtcFitsScreen (xf86CrtcPtr crtc, struct pict_f_transform *crtc_to_fb)
-{
-    ScrnInfoPtr		pScrn = crtc->scrn;
-    BoxRec		b;
-
-    /* When called before PreInit, the driver is
-     * presumably doing load detect
-     */
-    if (pScrn->virtualX == 0 || pScrn->virtualY == 0)
-	return TRUE;
-
-    b.x1 = 0;
-    b.y1 = 0;
-    b.x2 = crtc->mode.HDisplay;
-    b.y2 = crtc->mode.VDisplay;
-    if (crtc_to_fb)
-	pixman_f_transform_bounds (crtc_to_fb, &b);
-    else {
-	b.x1 += crtc->x;
-	b.y1 += crtc->y;
-	b.x2 += crtc->x;
-	b.y2 += crtc->y;
-    }
-
-    return (0 <= b.x1 && b.x2 <= pScrn->virtualX &&
-	    0 <= b.y1 && b.y2 <= pScrn->virtualY);
-}
-
-Bool
-xf86CrtcRotate (xf86CrtcPtr crtc)
-{
-    ScrnInfoPtr		pScrn = crtc->scrn;
-    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
-    /* if this is called during ScreenInit() we don't have pScrn->pScreen yet */
-    ScreenPtr		pScreen = screenInfo.screens[pScrn->scrnIndex];
-    PictTransform	crtc_to_fb;
-    struct pict_f_transform f_crtc_to_fb, f_fb_to_crtc;
-    xFixed		*new_params = NULL;
-    int			new_nparams = 0;
-    PictFilterPtr	new_filter = NULL;
-    int			new_width = 0;
-    int			new_height = 0;
-    RRTransformPtr	transform = NULL;
-    Bool		damage = FALSE;
-
-    if (crtc->transformPresent)
-	transform = &crtc->transform;
-
-    if (!RRTransformCompute (crtc->x, crtc->y,
-			     crtc->mode.HDisplay, crtc->mode.VDisplay,
-			     crtc->rotation,
-			     transform,
-
-			     &crtc_to_fb,
-			     &f_crtc_to_fb,
-			     &f_fb_to_crtc) &&
-	xf86CrtcFitsScreen (crtc, &f_crtc_to_fb))
-    {
-	/*
-	 * If the untranslated transformation is the identity,
-	 * disable the shadow buffer
-	 */
-	xf86RotateDestroy (crtc);
-	crtc->transform_in_use = FALSE;
-	free(new_params);
-	new_params = NULL;
-	new_nparams = 0;
-	new_filter = NULL;
-	new_width = 0;
-	new_height = 0;
-    }
-    else
-    {
-	/*
-	 * these are the size of the shadow pixmap, which
-	 * matches the mode, not the pre-rotated copy in the
-	 * frame buffer
-	 */
-	int	    width = crtc->mode.HDisplay;
-	int	    height = crtc->mode.VDisplay;
-	void	    *shadowData = crtc->rotatedData;
-	PixmapPtr   shadow = crtc->rotatedPixmap;
-	int	    old_width = shadow ? shadow->drawable.width : 0;
-	int	    old_height = shadow ? shadow->drawable.height : 0;
-
-	/* Allocate memory for rotation */
-	if (old_width != width || old_height != height)
-	{
-	    if (shadow || shadowData)
-	    {
-		crtc->funcs->shadow_destroy (crtc, shadow, shadowData);
-		crtc->rotatedPixmap = NULL;
-		crtc->rotatedData = NULL;
-	    }
-	    shadowData = crtc->funcs->shadow_allocate (crtc, width, height);
-	    if (!shadowData)
-		goto bail1;
-	    crtc->rotatedData = shadowData;
-	    /* shadow will be damaged in xf86RotatePrepare */
-	}
-	else
-	{
-	    /* mark shadowed area as damaged so it will be repainted */
-	    damage = TRUE;
-	}
-
-	if (!xf86_config->rotation_damage)
-	{
-	    /* Create damage structure */
-	    xf86_config->rotation_damage = DamageCreate (NULL, NULL,
-						DamageReportNone,
-						TRUE, pScreen, pScreen);
-	    if (!xf86_config->rotation_damage)
-		goto bail2;
-	    
-	    /* Wrap block handler */
-	    if (!xf86_config->BlockHandler) {
-		xf86_config->BlockHandler = pScreen->BlockHandler;
-		pScreen->BlockHandler = xf86RotateBlockHandler;
-	    }
-	}
-#ifdef RANDR_12_INTERFACE
-	if (transform)
-	{
-	    if (transform->nparams) {
-		new_params = malloc(transform->nparams * sizeof (xFixed));
-		if (new_params) {
-		    memcpy (new_params, transform->params,
-			    transform->nparams * sizeof (xFixed));
-		    new_nparams = transform->nparams;
-		    new_filter = transform->filter;
-		}
-	    } else
-		new_filter = transform->filter;
-	    if (new_filter)
-	    {
-		new_width = new_filter->width;
-		new_height = new_filter->height;
-	    }
-	}
-#endif
-
-	if (0)
-	{
-    bail2:
-	    if (shadow || shadowData)
-	    {
-		crtc->funcs->shadow_destroy (crtc, shadow, shadowData);
-		crtc->rotatedPixmap = NULL;
-		crtc->rotatedData = NULL;
-	    }
-    bail1:
-	    if (old_width && old_height)
-		crtc->rotatedPixmap = crtc->funcs->shadow_create (crtc,
-								  NULL,
-								  old_width,
-								  old_height);
-	    return FALSE;
-	}
-	crtc->transform_in_use = TRUE;
-    }
-    crtc->crtc_to_framebuffer = crtc_to_fb;
-    crtc->f_crtc_to_framebuffer = f_crtc_to_fb;
-    crtc->f_framebuffer_to_crtc = f_fb_to_crtc;
-    free(crtc->params);
-    crtc->params = new_params;
-    crtc->nparams = new_nparams;
-    crtc->filter = new_filter;
-    crtc->filter_width = new_width;
-    crtc->filter_height = new_height;
-    crtc->bounds.x1 = 0;
-    crtc->bounds.x2 = crtc->mode.HDisplay;
-    crtc->bounds.y1 = 0;
-    crtc->bounds.y2 = crtc->mode.VDisplay;
-    pixman_f_transform_bounds (&f_crtc_to_fb, &crtc->bounds);
-
-    if (damage)
-        xf86CrtcDamageShadow (crtc);
-
-    /* All done */
-    return TRUE;
-}
+/*

+ * Copyright © 2006 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 the copyright holders not be used in advertising or

+ * publicity pertaining to distribution of the software without specific,

+ * written prior permission.  The copyright holders make no representations

+ * about the suitability of this software for any purpose.  It is provided "as

+ * is" without express or implied warranty.

+ *

+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,

+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO

+ * EVENT SHALL THE COPYRIGHT HOLDERS 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_XORG_CONFIG_H

+#include <xorg-config.h>

+#else

+#ifdef HAVE_CONFIG_H

+#include <config.h>

+#endif

+#endif

+

+#include <stddef.h>

+#include <string.h>

+#include <stdio.h>

+

+#include "xf86.h"

+#include "xf86DDC.h"

+#include "fb.h"

+#include "windowstr.h"

+#include "xf86Crtc.h"

+#include "xf86Modes.h"

+#include "xf86RandR12.h"

+#include "X11/extensions/render.h"

+#include "X11/extensions/dpmsconst.h"

+#include "X11/Xatom.h"

+

+/* borrowed from composite extension, move to Render and publish? */

+

+static VisualPtr

+compGetWindowVisual (WindowPtr pWin)

+{

+    ScreenPtr	    pScreen = pWin->drawable.pScreen;

+    VisualID	    vid = wVisual (pWin);

+    int		    i;

+

+    for (i = 0; i < pScreen->numVisuals; i++)

+	if (pScreen->visuals[i].vid == vid)

+	    return &pScreen->visuals[i];

+    return 0;

+}

+

+static PictFormatPtr

+compWindowFormat (WindowPtr pWin)

+{

+    ScreenPtr	pScreen = pWin->drawable.pScreen;

+    

+    return PictureMatchVisual (pScreen, pWin->drawable.depth,

+			       compGetWindowVisual (pWin));

+}

+

+#define F(x)	IntToxFixed(x)

+

+#define toF(x)	((float) (x) / 65536.0f)

+

+static void

+xf86RotateCrtcRedisplay (xf86CrtcPtr crtc, RegionPtr region)

+{

+    ScrnInfoPtr		scrn = crtc->scrn;

+    ScreenPtr		screen = scrn->pScreen;

+    WindowPtr		root = screen->root;

+    PixmapPtr		dst_pixmap = crtc->rotatedPixmap;

+    PictFormatPtr	format = compWindowFormat (screen->root);

+    int			error;

+    PicturePtr		src, dst;

+    int			n = RegionNumRects(region);

+    BoxPtr		b = RegionRects(region);

+    XID			include_inferiors = IncludeInferiors;

+    

+    src = CreatePicture (None,

+			 &root->drawable,

+			 format,

+			 CPSubwindowMode,

+			 &include_inferiors,

+			 serverClient,

+			 &error);

+    if (!src)

+	return;

+

+    dst = CreatePicture (None,

+			 &dst_pixmap->drawable,

+			 format,

+			 0L,

+			 NULL,

+			 serverClient,

+			 &error);

+    if (!dst)

+	return;

+

+    error = SetPictureTransform (src, &crtc->crtc_to_framebuffer);

+    if (error)

+	return;

+    if (crtc->transform_in_use && crtc->filter)

+	SetPicturePictFilter (src, crtc->filter,

+			      crtc->params, crtc->nparams);

+

+    if (crtc->shadowClear)

+    {

+	CompositePicture (PictOpSrc,

+			  src, NULL, dst,

+			  0, 0, 0, 0, 0, 0,

+			  crtc->mode.HDisplay, crtc->mode.VDisplay);

+	crtc->shadowClear = FALSE;

+    }

+    else

+    {

+	while (n--)

+	{

+	    BoxRec	dst_box;

+

+	    dst_box = *b;

+	    dst_box.x1 -= crtc->filter_width >> 1;

+	    dst_box.x2 += crtc->filter_width >> 1;

+	    dst_box.y1 -= crtc->filter_height >> 1;

+	    dst_box.y2 += crtc->filter_height >> 1;

+	    pixman_f_transform_bounds (&crtc->f_framebuffer_to_crtc, &dst_box);

+	    CompositePicture (PictOpSrc,

+			      src, NULL, dst,

+			      dst_box.x1, dst_box.y1, 0, 0, dst_box.x1, dst_box.y1,

+			      dst_box.x2 - dst_box.x1,

+			      dst_box.y2 - dst_box.y1);

+	    b++;

+	}

+    }

+    FreePicture (src, None);

+    FreePicture (dst, None);

+}

+

+static void

+xf86CrtcDamageShadow (xf86CrtcPtr crtc)

+{

+    ScrnInfoPtr	pScrn = crtc->scrn;

+    BoxRec	damage_box;

+    RegionRec   damage_region;

+    ScreenPtr	pScreen = pScrn->pScreen;

+

+    damage_box.x1 = 0;

+    damage_box.x2 = crtc->mode.HDisplay;

+    damage_box.y1 = 0;

+    damage_box.y2 = crtc->mode.VDisplay;

+    if (!pixman_transform_bounds (&crtc->crtc_to_framebuffer, &damage_box))

+    {

+	damage_box.x1 = 0;

+	damage_box.y1 = 0;

+	damage_box.x2 = pScreen->width;

+	damage_box.y2 = pScreen->height;

+    }

+    if (damage_box.x1 < 0) damage_box.x1 = 0;

+    if (damage_box.y1 < 0) damage_box.y1 = 0;

+    if (damage_box.x2 > pScreen->width) damage_box.x2 = pScreen->width;

+    if (damage_box.y2 > pScreen->height) damage_box.y2 = pScreen->height;

+    RegionInit(&damage_region, &damage_box, 1);

+    DamageDamageRegion (&(*pScreen->GetScreenPixmap)(pScreen)->drawable,

+			&damage_region);

+    RegionUninit(&damage_region);

+    crtc->shadowClear = TRUE;

+}

+

+static void

+xf86RotatePrepare (ScreenPtr pScreen)

+{

+    ScrnInfoPtr		pScrn = xf86Screens[pScreen->myNum];

+    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);

+    int			c;

+

+    for (c = 0; c < xf86_config->num_crtc; c++)

+    {

+	xf86CrtcPtr crtc = xf86_config->crtc[c];

+	

+	if (crtc->rotatedData && !crtc->rotatedPixmap)

+	{

+	    crtc->rotatedPixmap = crtc->funcs->shadow_create (crtc,

+							     crtc->rotatedData,

+							     crtc->mode.HDisplay,

+							     crtc->mode.VDisplay);

+	    if (!xf86_config->rotation_damage_registered)

+	    {

+		/* Hook damage to screen pixmap */

+		DamageRegister (&(*pScreen->GetScreenPixmap)(pScreen)->drawable,

+				xf86_config->rotation_damage);

+		xf86_config->rotation_damage_registered = TRUE;

+		EnableLimitedSchedulingLatency();

+	    }

+	    

+	    xf86CrtcDamageShadow (crtc);

+	}

+    }

+}

+

+static Bool

+xf86RotateRedisplay(ScreenPtr pScreen)

+{

+    ScrnInfoPtr		pScrn = xf86Screens[pScreen->myNum];

+    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);

+    DamagePtr		damage = xf86_config->rotation_damage;

+    RegionPtr		region;

+

+    if (!damage)

+	return FALSE;

+    xf86RotatePrepare (pScreen);

+    region = DamageRegion(damage);

+    if (RegionNotEmpty(region))

+    {

+	int			c;

+	SourceValidateProcPtr	SourceValidate;

+

+	/*

+	 * SourceValidate is used by the software cursor code

+	 * to pull the cursor off of the screen when reading

+	 * bits from the frame buffer. Bypassing this function

+	 * leaves the software cursor in place

+	 */

+	SourceValidate = pScreen->SourceValidate;

+	pScreen->SourceValidate = NULL;

+

+	for (c = 0; c < xf86_config->num_crtc; c++)

+	{

+	    xf86CrtcPtr	    crtc = xf86_config->crtc[c];

+

+	    if (crtc->transform_in_use && crtc->enabled)

+	    {

+		RegionRec   crtc_damage;

+

+		/* compute portion of damage that overlaps crtc */

+		RegionInit(&crtc_damage, &crtc->bounds, 1);

+		RegionIntersect(&crtc_damage, &crtc_damage, region);

+		

+		/* update damaged region */

+		if (RegionNotEmpty(&crtc_damage))

+    		    xf86RotateCrtcRedisplay (crtc, &crtc_damage);

+		

+		RegionUninit(&crtc_damage);

+	    }

+	}

+	pScreen->SourceValidate = SourceValidate;

+	DamageEmpty(damage);

+    }

+    return TRUE;

+}

+

+static void

+xf86RotateBlockHandler(int screenNum, pointer blockData,

+		       pointer pTimeout, pointer pReadmask)

+{

+    ScreenPtr		pScreen = screenInfo.screens[screenNum];

+    ScrnInfoPtr		pScrn = xf86Screens[screenNum];

+    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);

+    Bool		rotation_active;

+

+    rotation_active = xf86RotateRedisplay(pScreen);

+    pScreen->BlockHandler = xf86_config->BlockHandler;

+    (*pScreen->BlockHandler) (screenNum, blockData, pTimeout, pReadmask);

+    /* cannot avoid re-wrapping until all wrapping is audited */

+    xf86_config->BlockHandler = pScreen->BlockHandler;

+    pScreen->BlockHandler = xf86RotateBlockHandler;

+}

+

+void

+xf86RotateDestroy (xf86CrtcPtr crtc)

+{

+    ScrnInfoPtr		pScrn = crtc->scrn;

+    ScreenPtr		pScreen = pScrn->pScreen;

+    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);

+    int			c;

+    

+    /* Free memory from rotation */

+    if (crtc->rotatedPixmap || crtc->rotatedData)

+    {

+	crtc->funcs->shadow_destroy (crtc, crtc->rotatedPixmap, crtc->rotatedData);

+	crtc->rotatedPixmap = NULL;

+	crtc->rotatedData = NULL;

+    }

+

+    for (c = 0; c < xf86_config->num_crtc; c++)

+	if (xf86_config->crtc[c]->transform_in_use)

+	    return;

+

+    /*

+     * Clean up damage structures when no crtcs are rotated

+     */

+    if (xf86_config->rotation_damage)

+    {

+	/* Free damage structure */

+	if (xf86_config->rotation_damage_registered)

+	{

+	    DamageUnregister (&(*pScreen->GetScreenPixmap)(pScreen)->drawable,

+			      xf86_config->rotation_damage);

+	    xf86_config->rotation_damage_registered = FALSE;

+	    DisableLimitedSchedulingLatency();

+	}

+	DamageDestroy (xf86_config->rotation_damage);

+	xf86_config->rotation_damage = NULL;

+    }

+}

+

+void

+xf86RotateFreeShadow(ScrnInfoPtr pScrn)

+{

+    xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(pScrn);

+    int c;

+

+   for (c = 0; c < config->num_crtc; c++) {

+       xf86CrtcPtr crtc = config->crtc[c];

+

+       if (crtc->rotatedPixmap || crtc->rotatedData) {

+	   crtc->funcs->shadow_destroy(crtc, crtc->rotatedPixmap,

+				crtc->rotatedData);

+	   crtc->rotatedPixmap = NULL;

+	   crtc->rotatedData = NULL;

+       }

+   }

+}

+

+void

+xf86RotateCloseScreen (ScreenPtr screen)

+{

+    ScrnInfoPtr		scrn = xf86Screens[screen->myNum];

+    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);

+    int			c;

+

+    for (c = 0; c < xf86_config->num_crtc; c++)

+	xf86RotateDestroy (xf86_config->crtc[c]);

+}

+

+static Bool

+xf86CrtcFitsScreen (xf86CrtcPtr crtc, struct pict_f_transform *crtc_to_fb)

+{

+    ScrnInfoPtr		pScrn = crtc->scrn;

+    BoxRec		b;

+

+    /* When called before PreInit, the driver is

+     * presumably doing load detect

+     */

+    if (pScrn->virtualX == 0 || pScrn->virtualY == 0)

+	return TRUE;

+

+    b.x1 = 0;

+    b.y1 = 0;

+    b.x2 = crtc->mode.HDisplay;

+    b.y2 = crtc->mode.VDisplay;

+    if (crtc_to_fb)

+	pixman_f_transform_bounds (crtc_to_fb, &b);

+    else {

+	b.x1 += crtc->x;

+	b.y1 += crtc->y;

+	b.x2 += crtc->x;

+	b.y2 += crtc->y;

+    }

+

+    return (0 <= b.x1 && b.x2 <= pScrn->virtualX &&

+	    0 <= b.y1 && b.y2 <= pScrn->virtualY);

+}

+

+Bool

+xf86CrtcRotate (xf86CrtcPtr crtc)

+{

+    ScrnInfoPtr		pScrn = crtc->scrn;

+    xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);

+    /* if this is called during ScreenInit() we don't have pScrn->pScreen yet */

+    ScreenPtr		pScreen = screenInfo.screens[pScrn->scrnIndex];

+    PictTransform	crtc_to_fb;

+    struct pict_f_transform f_crtc_to_fb, f_fb_to_crtc;

+    xFixed		*new_params = NULL;

+    int			new_nparams = 0;

+    PictFilterPtr	new_filter = NULL;

+    int			new_width = 0;

+    int			new_height = 0;

+    RRTransformPtr	transform = NULL;

+    Bool		damage = FALSE;

+

+    if (crtc->transformPresent)

+	transform = &crtc->transform;

+

+    if (!RRTransformCompute (crtc->x, crtc->y,

+			     crtc->mode.HDisplay, crtc->mode.VDisplay,

+			     crtc->rotation,

+			     transform,

+

+			     &crtc_to_fb,

+			     &f_crtc_to_fb,

+			     &f_fb_to_crtc) &&

+	xf86CrtcFitsScreen (crtc, &f_crtc_to_fb))

+    {

+	/*

+	 * If the untranslated transformation is the identity,

+	 * disable the shadow buffer

+	 */

+	xf86RotateDestroy (crtc);

+	crtc->transform_in_use = FALSE;

+	free(new_params);

+	new_params = NULL;

+	new_nparams = 0;

+	new_filter = NULL;

+	new_width = 0;

+	new_height = 0;

+    }

+    else

+    {

+	/*

+	 * these are the size of the shadow pixmap, which

+	 * matches the mode, not the pre-rotated copy in the

+	 * frame buffer

+	 */

+	int	    width = crtc->mode.HDisplay;

+	int	    height = crtc->mode.VDisplay;

+	void	    *shadowData = crtc->rotatedData;

+	PixmapPtr   shadow = crtc->rotatedPixmap;

+	int	    old_width = shadow ? shadow->drawable.width : 0;

+	int	    old_height = shadow ? shadow->drawable.height : 0;

+

+	/* Allocate memory for rotation */

+	if (old_width != width || old_height != height)

+	{

+	    if (shadow || shadowData)

+	    {

+		crtc->funcs->shadow_destroy (crtc, shadow, shadowData);

+		crtc->rotatedPixmap = NULL;

+		crtc->rotatedData = NULL;

+	    }

+	    shadowData = crtc->funcs->shadow_allocate (crtc, width, height);

+	    if (!shadowData)

+		goto bail1;

+	    crtc->rotatedData = shadowData;

+	    /* shadow will be damaged in xf86RotatePrepare */

+	}

+	else

+	{

+	    /* mark shadowed area as damaged so it will be repainted */

+	    damage = TRUE;

+	}

+

+	if (!xf86_config->rotation_damage)

+	{

+	    /* Create damage structure */

+	    xf86_config->rotation_damage = DamageCreate (NULL, NULL,

+						DamageReportNone,

+						TRUE, pScreen, pScreen);

+	    if (!xf86_config->rotation_damage)

+		goto bail2;

+	    

+	    /* Wrap block handler */

+	    if (!xf86_config->BlockHandler) {

+		xf86_config->BlockHandler = pScreen->BlockHandler;

+		pScreen->BlockHandler = xf86RotateBlockHandler;

+	    }

+	}

+#ifdef RANDR_12_INTERFACE

+	if (transform)

+	{

+	    if (transform->nparams) {

+		new_params = malloc(transform->nparams * sizeof (xFixed));

+		if (new_params) {

+		    memcpy (new_params, transform->params,

+			    transform->nparams * sizeof (xFixed));

+		    new_nparams = transform->nparams;

+		    new_filter = transform->filter;

+		}

+	    } else

+		new_filter = transform->filter;

+	    if (new_filter)

+	    {

+		new_width = new_filter->width;

+		new_height = new_filter->height;

+	    }

+	}

+#endif

+

+	if (0)

+	{

+    bail2:

+	    if (shadow || shadowData)

+	    {

+		crtc->funcs->shadow_destroy (crtc, shadow, shadowData);

+		crtc->rotatedPixmap = NULL;

+		crtc->rotatedData = NULL;

+	    }

+    bail1:

+	    if (old_width && old_height)

+		crtc->rotatedPixmap = crtc->funcs->shadow_create (crtc,

+								  NULL,

+								  old_width,

+								  old_height);

+	    return FALSE;

+	}

+	crtc->transform_in_use = TRUE;

+    }

+    crtc->crtc_to_framebuffer = crtc_to_fb;

+    crtc->f_crtc_to_framebuffer = f_crtc_to_fb;

+    crtc->f_framebuffer_to_crtc = f_fb_to_crtc;

+    free(crtc->params);

+    crtc->params = new_params;

+    crtc->nparams = new_nparams;

+    crtc->filter = new_filter;

+    crtc->filter_width = new_width;

+    crtc->filter_height = new_height;

+    crtc->bounds.x1 = 0;

+    crtc->bounds.x2 = crtc->mode.HDisplay;

+    crtc->bounds.y1 = 0;

+    crtc->bounds.y2 = crtc->mode.VDisplay;

+    pixman_f_transform_bounds (&f_crtc_to_fb, &crtc->bounds);

+

+    if (damage)

+        xf86CrtcDamageShadow (crtc);

+

+    /* All done */

+    return TRUE;

+}