xf86rotate.c

显驱动 Intel英特尔G45G43G41G35G33G31G965Q963Q965GM965系列显卡最新X.Org驱动2.4.0版For Linux

/*
 * 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"
#define DPMS_SERVER
#include "X11/extensions/dpms.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)

static void
PictureTransformIdentity (PictTransformPtr matrix)
{
    int	i;
    memset (matrix, '\0', sizeof (PictTransform));
    for (i = 0; i < 3; i++)
	matrix->matrix[i][i] = F(1);
}

static Bool
PictureTransformMultiply (PictTransformPtr dst, PictTransformPtr l, PictTransformPtr r)
{
    PictTransform   d;
    int		    dx, dy;
    int		    o;

    for (dy = 0; dy < 3; dy++)
	for (dx = 0; dx < 3; dx++)
	{
	    xFixed_48_16    v;
	    xFixed_32_32    partial;
	    v = 0;
	    for (o = 0; o < 3; o++)
	    {
		partial = (xFixed_32_32) l->matrix[dy][o] * (xFixed_32_32) r->matrix[o][dx];
		v += partial >> 16;
	    }
	    if (v > MAX_FIXED_48_16 || v < MIN_FIXED_48_16)
		return FALSE;
	    d.matrix[dy][dx] = (xFixed) v;
	}
    *dst = d;
    return TRUE;
}

static void
PictureTransformInitScale (PictTransformPtr t, xFixed sx, xFixed sy)
{
    memset (t, '\0', sizeof (PictTransform));
    t->matrix[0][0] = sx;
    t->matrix[1][1] = sy;
    t->matrix[2][2] = F (1);
}

static xFixed
fixed_inverse (xFixed x)
{
    return (xFixed) ((((xFixed_48_16) F(1)) * F(1)) / x);
}

static Bool
PictureTransformScale (PictTransformPtr forward,
		       PictTransformPtr reverse,
		       xFixed sx, xFixed sy)
{
    PictTransform   t;
    
    PictureTransformInitScale (&t, sx, sy);
    if (!PictureTransformMultiply (forward, &t, forward))
	return FALSE;
    PictureTransformInitScale (&t, fixed_inverse (sx), fixed_inverse (sy));
    if (!PictureTransformMultiply (reverse, reverse, &t))
	return FALSE;
    return TRUE;
}

static void
PictureTransformInitRotate (PictTransformPtr t, xFixed c, xFixed s)
{
    memset (t, '\0', sizeof (PictTransform));
    t->matrix[0][0] = c;
    t->matrix[0][1] = -s;
    t->matrix[1][0] = s;
    t->matrix[1][1] = c;
    t->matrix[2][2] = F (1);
}

static Bool
PictureTransformRotate (PictTransformPtr forward,
			PictTransformPtr reverse,
			xFixed c, xFixed s)
{
    PictTransform   t;
    PictureTransformInitRotate (&t, c, s);
    if (!PictureTransformMultiply (forward, &t, forward))
	return FALSE;
    
    PictureTransformInitRotate (&t, c, -s);
    if (!PictureTransformMultiply (reverse, reverse, &t))
	return FALSE;
    return TRUE;
}

static void
PictureTransformInitTranslate (PictTransformPtr t, xFixed tx, xFixed ty)
{
    memset (t, '\0', sizeof (PictTransform));
    t->matrix[0][0] = F (1);
    t->matrix[0][2] = tx;
    t->matrix[1][1] = F (1);
    t->matrix[1][2] = ty;
    t->matrix[2][2] = F (1);
}

static Bool
PictureTransformTranslate (PictTransformPtr forward,
			   PictTransformPtr reverse,
			   xFixed tx, xFixed ty)
{
    PictTransform   t;
    PictureTransformInitTranslate (&t, tx, ty);
    if (!PictureTransformMultiply (forward, &t, forward))
	return FALSE;
    
    PictureTransformInitTranslate (&t, -tx, -ty);
    if (!PictureTransformMultiply (reverse, reverse, &t))
	return FALSE;
    return TRUE;
}

static void
PictureTransformBounds (BoxPtr b, PictTransformPtr matrix)
{
    PictVector	v[4];
    int		i;
    int		x1, y1, x2, y2;

    v[0].vector[0] = F (b->x1);    v[0].vector[1] = F (b->y1);	v[0].vector[2] = F(1);
    v[1].vector[0] = F (b->x2);    v[1].vector[1] = F (b->y1);	v[1].vector[2] = F(1);
    v[2].vector[0] = F (b->x2);    v[2].vector[1] = F (b->y2);	v[2].vector[2] = F(1);
    v[3].vector[0] = F (b->x1);    v[3].vector[1] = F (b->y2);	v[3].vector[2] = F(1);
    for (i = 0; i < 4; i++)
    {
	PictureTransformPoint (matrix, &v[i]);
	x1 = xFixedToInt (v[i].vector[0]);
	y1 = xFixedToInt (v[i].vector[1]);
	x2 = xFixedToInt (xFixedCeil (v[i].vector[0]));
	y2 = xFixedToInt (xFixedCeil (v[i].vector[1]));
	if (i == 0)
	{
	    b->x1 = x1; b->y1 = y1;
	    b->x2 = x2; b->y2 = y2;
	}
	else
	{
	    if (x1 < b->x1) b->x1 = x1;
	    if (y1 < b->y1) b->y1 = y1;
	    if (x2 > b->x2) b->x2 = x2;
	    if (y2 > b->y2) b->y2 = y2;
	}
    }
}

static Bool
PictureTransformIsIdentity(PictTransform *t)
{
    return ((t->matrix[0][0] == t->matrix[1][1]) &&
            (t->matrix[0][0] == t->matrix[2][2]) &&
            (t->matrix[0][0] != 0) &&
            (t->matrix[0][1] == 0) &&
            (t->matrix[0][2] == 0) &&
            (t->matrix[1][0] == 0) &&
            (t->matrix[1][2] == 0) &&
            (t->matrix[2][0] == 0) &&
            (t->matrix[2][1] == 0));
}

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

static void
PictureTransformErrorF (PictTransform *t)
{
    ErrorF ("{ { %f %f %f } { %f %f %f } { %f %f %f } }",
	    toF(t->matrix[0][0]), toF(t->matrix[0][1]), toF(t->matrix[0][2]), 
	    toF(t->matrix[1][0]), toF(t->matrix[1][1]), toF(t->matrix[1][2]), 
	    toF(t->matrix[2][0]), toF(t->matrix[2][1]), toF(t->matrix[2][2]));
}

static Bool
PictureTransformIsInverse (char *where, PictTransform *a, PictTransform *b)
{
    PictTransform   t;

    PictureTransformMultiply (&t, a, b);
    if (!PictureTransformIsIdentity (&t))
    {
	ErrorF ("%s: ", where);
	PictureTransformErrorF (a);
	ErrorF (" * ");
	PictureTransformErrorF (b);
	ErrorF (" = ");
	PictureTransformErrorF (a);
	ErrorF ("\n");
	return FALSE;
    }
    return TRUE;
}

static void
xf86RotateCrtcRedisplay (xf86CrtcPtr crtc, RegionPtr region)
{
    ScrnInfoPtr		scrn = crtc->scrn;
    ScreenPtr		screen = scrn->pScreen;
    WindowPtr		root = WindowTable[screen->myNum];
    PixmapPtr		dst_pixmap = crtc->rotatedPixmap;
    PictFormatPtr	format = compWindowFormat (WindowTable[screen->myNum]);
    int			error;
    PicturePtr		src, dst;
    int			n = REGION_NUM_RECTS(region);
    BoxPtr		b = REGION_RECTS(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;

    while (n--)
    {
	BoxRec	dst_box;

	dst_box = *b;
	PictureTransformBounds (&dst_box, &crtc->framebuffer_to_crtc);
	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;