679 lines
18 KiB
C
679 lines
18 KiB
C
/*
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* Copyright © 2006 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#else
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#endif
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#include <stddef.h>
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#include <string.h>
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#include <stdio.h>
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#include "xf86.h"
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#include "xf86DDC.h"
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#include "fb.h"
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#include "windowstr.h"
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#include "xf86Crtc.h"
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#include "xf86Modes.h"
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#include "xf86RandR12.h"
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#include "X11/extensions/render.h"
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#define DPMS_SERVER
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#include "X11/extensions/dpms.h"
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#include "X11/Xatom.h"
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/* borrowed from composite extension, move to Render and publish? */
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static VisualPtr
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compGetWindowVisual (WindowPtr pWin)
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{
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ScreenPtr pScreen = pWin->drawable.pScreen;
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VisualID vid = wVisual (pWin);
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int i;
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for (i = 0; i < pScreen->numVisuals; i++)
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if (pScreen->visuals[i].vid == vid)
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return &pScreen->visuals[i];
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return 0;
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}
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static PictFormatPtr
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compWindowFormat (WindowPtr pWin)
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{
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ScreenPtr pScreen = pWin->drawable.pScreen;
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return PictureMatchVisual (pScreen, pWin->drawable.depth,
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compGetWindowVisual (pWin));
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}
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#define F(x) IntToxFixed(x)
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static void
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PictureTransformIdentity (PictTransformPtr matrix)
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{
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int i;
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memset (matrix, '\0', sizeof (PictTransform));
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for (i = 0; i < 3; i++)
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matrix->matrix[i][i] = F(1);
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}
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static Bool
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PictureTransformMultiply (PictTransformPtr dst, PictTransformPtr l, PictTransformPtr r)
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{
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PictTransform d;
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int dx, dy;
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int o;
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for (dy = 0; dy < 3; dy++)
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for (dx = 0; dx < 3; dx++)
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{
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xFixed_48_16 v;
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xFixed_32_32 partial;
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v = 0;
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for (o = 0; o < 3; o++)
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{
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partial = (xFixed_32_32) l->matrix[dy][o] * (xFixed_32_32) r->matrix[o][dx];
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v += partial >> 16;
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}
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if (v > MAX_FIXED_48_16 || v < MIN_FIXED_48_16)
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return FALSE;
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d.matrix[dy][dx] = (xFixed) v;
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}
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*dst = d;
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return TRUE;
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}
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static void
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PictureTransformInitScale (PictTransformPtr t, xFixed sx, xFixed sy)
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{
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memset (t, '\0', sizeof (PictTransform));
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t->matrix[0][0] = sx;
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t->matrix[1][1] = sy;
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t->matrix[2][2] = F (1);
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}
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static xFixed
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fixed_inverse (xFixed x)
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{
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return (xFixed) ((((xFixed_48_16) F(1)) * F(1)) / x);
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}
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static Bool
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PictureTransformScale (PictTransformPtr forward,
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PictTransformPtr reverse,
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xFixed sx, xFixed sy)
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{
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PictTransform t;
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PictureTransformInitScale (&t, sx, sy);
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if (!PictureTransformMultiply (forward, &t, forward))
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return FALSE;
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PictureTransformInitScale (&t, fixed_inverse (sx), fixed_inverse (sy));
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if (!PictureTransformMultiply (reverse, reverse, &t))
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return FALSE;
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return TRUE;
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}
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static void
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PictureTransformInitRotate (PictTransformPtr t, xFixed c, xFixed s)
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{
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memset (t, '\0', sizeof (PictTransform));
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t->matrix[0][0] = c;
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t->matrix[0][1] = -s;
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t->matrix[1][0] = s;
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t->matrix[1][1] = c;
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t->matrix[2][2] = F (1);
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}
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static Bool
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PictureTransformRotate (PictTransformPtr forward,
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PictTransformPtr reverse,
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xFixed c, xFixed s)
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{
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PictTransform t;
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PictureTransformInitRotate (&t, c, s);
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if (!PictureTransformMultiply (forward, &t, forward))
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return FALSE;
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PictureTransformInitRotate (&t, c, -s);
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if (!PictureTransformMultiply (reverse, reverse, &t))
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return FALSE;
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return TRUE;
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}
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static void
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PictureTransformInitTranslate (PictTransformPtr t, xFixed tx, xFixed ty)
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{
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memset (t, '\0', sizeof (PictTransform));
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t->matrix[0][0] = F (1);
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t->matrix[0][2] = tx;
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t->matrix[1][1] = F (1);
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t->matrix[1][2] = ty;
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t->matrix[2][2] = F (1);
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}
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static Bool
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PictureTransformTranslate (PictTransformPtr forward,
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PictTransformPtr reverse,
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xFixed tx, xFixed ty)
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{
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PictTransform t;
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PictureTransformInitTranslate (&t, tx, ty);
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if (!PictureTransformMultiply (forward, &t, forward))
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return FALSE;
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PictureTransformInitTranslate (&t, -tx, -ty);
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if (!PictureTransformMultiply (reverse, reverse, &t))
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return FALSE;
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return TRUE;
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}
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static void
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PictureTransformBounds (BoxPtr b, PictTransformPtr matrix)
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{
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PictVector v[4];
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int i;
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int x1, y1, x2, y2;
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v[0].vector[0] = F (b->x1); v[0].vector[1] = F (b->y1); v[0].vector[2] = F(1);
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v[1].vector[0] = F (b->x2); v[1].vector[1] = F (b->y1); v[1].vector[2] = F(1);
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v[2].vector[0] = F (b->x2); v[2].vector[1] = F (b->y2); v[2].vector[2] = F(1);
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v[3].vector[0] = F (b->x1); v[3].vector[1] = F (b->y2); v[3].vector[2] = F(1);
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for (i = 0; i < 4; i++)
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{
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PictureTransformPoint (matrix, &v[i]);
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x1 = xFixedToInt (v[i].vector[0]);
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y1 = xFixedToInt (v[i].vector[1]);
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x2 = xFixedToInt (xFixedCeil (v[i].vector[0]));
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y2 = xFixedToInt (xFixedCeil (v[i].vector[1]));
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if (i == 0)
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{
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b->x1 = x1; b->y1 = y1;
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b->x2 = x2; b->y2 = y2;
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}
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else
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{
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if (x1 < b->x1) b->x1 = x1;
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if (y1 < b->y1) b->y1 = y1;
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if (x2 > b->x2) b->x2 = x2;
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if (y2 > b->y2) b->y2 = y2;
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}
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}
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}
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static Bool
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PictureTransformIsIdentity(PictTransform *t)
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{
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return ((t->matrix[0][0] == t->matrix[1][1]) &&
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(t->matrix[0][0] == t->matrix[2][2]) &&
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(t->matrix[0][0] != 0) &&
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(t->matrix[0][1] == 0) &&
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(t->matrix[0][2] == 0) &&
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(t->matrix[1][0] == 0) &&
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(t->matrix[1][2] == 0) &&
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(t->matrix[2][0] == 0) &&
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(t->matrix[2][1] == 0));
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}
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#define toF(x) ((float) (x) / 65536.0f)
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static void
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PictureTransformErrorF (PictTransform *t)
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{
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ErrorF ("{ { %f %f %f } { %f %f %f } { %f %f %f } }",
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toF(t->matrix[0][0]), toF(t->matrix[0][1]), toF(t->matrix[0][2]),
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toF(t->matrix[1][0]), toF(t->matrix[1][1]), toF(t->matrix[1][2]),
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toF(t->matrix[2][0]), toF(t->matrix[2][1]), toF(t->matrix[2][2]));
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}
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static Bool
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PictureTransformIsInverse (char *where, PictTransform *a, PictTransform *b)
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{
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PictTransform t;
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PictureTransformMultiply (&t, a, b);
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if (!PictureTransformIsIdentity (&t))
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{
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ErrorF ("%s: ", where);
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PictureTransformErrorF (a);
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ErrorF (" * ");
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PictureTransformErrorF (b);
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ErrorF (" = ");
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PictureTransformErrorF (a);
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ErrorF ("\n");
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return FALSE;
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}
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return TRUE;
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}
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static void
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xf86RotateCrtcRedisplay (xf86CrtcPtr crtc, RegionPtr region)
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{
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ScrnInfoPtr scrn = crtc->scrn;
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ScreenPtr screen = scrn->pScreen;
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WindowPtr root = WindowTable[screen->myNum];
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PixmapPtr dst_pixmap = crtc->rotatedPixmap;
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PictFormatPtr format = compWindowFormat (WindowTable[screen->myNum]);
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int error;
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PicturePtr src, dst;
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int n = REGION_NUM_RECTS(region);
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BoxPtr b = REGION_RECTS(region);
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XID include_inferiors = IncludeInferiors;
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src = CreatePicture (None,
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&root->drawable,
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format,
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CPSubwindowMode,
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&include_inferiors,
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serverClient,
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&error);
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if (!src)
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return;
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dst = CreatePicture (None,
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&dst_pixmap->drawable,
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format,
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0L,
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NULL,
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serverClient,
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&error);
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if (!dst)
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return;
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error = SetPictureTransform (src, &crtc->crtc_to_framebuffer);
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if (error)
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return;
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while (n--)
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{
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BoxRec dst_box;
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dst_box = *b;
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PictureTransformBounds (&dst_box, &crtc->framebuffer_to_crtc);
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CompositePicture (PictOpSrc,
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src, NULL, dst,
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dst_box.x1, dst_box.y1, 0, 0, dst_box.x1, dst_box.y1,
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dst_box.x2 - dst_box.x1,
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dst_box.y2 - dst_box.y1);
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b++;
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}
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FreePicture (src, None);
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FreePicture (dst, None);
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}
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static void
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xf86CrtcDamageShadow (xf86CrtcPtr crtc)
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{
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ScrnInfoPtr pScrn = crtc->scrn;
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BoxRec damage_box;
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RegionRec damage_region;
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ScreenPtr pScreen = pScrn->pScreen;
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damage_box.x1 = crtc->x;
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damage_box.x2 = crtc->x + xf86ModeWidth (&crtc->mode, crtc->rotation);
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damage_box.y1 = crtc->y;
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damage_box.y2 = crtc->y + xf86ModeHeight (&crtc->mode, crtc->rotation);
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REGION_INIT (pScreen, &damage_region, &damage_box, 1);
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DamageDamageRegion (&(*pScreen->GetScreenPixmap)(pScreen)->drawable,
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&damage_region);
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REGION_UNINIT (pScreen, &damage_region);
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}
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static void
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xf86RotatePrepare (ScreenPtr pScreen)
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{
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ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
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xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
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int c;
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for (c = 0; c < xf86_config->num_crtc; c++)
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{
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xf86CrtcPtr crtc = xf86_config->crtc[c];
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if (crtc->rotatedData && !crtc->rotatedPixmap)
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{
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crtc->rotatedPixmap = crtc->funcs->shadow_create (crtc,
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crtc->rotatedData,
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crtc->mode.HDisplay,
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crtc->mode.VDisplay);
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if (!xf86_config->rotation_damage_registered)
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{
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/* Hook damage to screen pixmap */
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DamageRegister (&(*pScreen->GetScreenPixmap)(pScreen)->drawable,
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xf86_config->rotation_damage);
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xf86_config->rotation_damage_registered = TRUE;
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}
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xf86CrtcDamageShadow (crtc);
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}
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}
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}
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static Bool
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xf86RotateRedisplay(ScreenPtr pScreen)
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{
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ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
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xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
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DamagePtr damage = xf86_config->rotation_damage;
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RegionPtr region;
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if (!damage)
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return FALSE;
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xf86RotatePrepare (pScreen);
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region = DamageRegion(damage);
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if (REGION_NOTEMPTY(pScreen, region))
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{
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int c;
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SourceValidateProcPtr SourceValidate;
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/*
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* SourceValidate is used by the software cursor code
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* to pull the cursor off of the screen when reading
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* bits from the frame buffer. Bypassing this function
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* leaves the software cursor in place
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*/
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SourceValidate = pScreen->SourceValidate;
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pScreen->SourceValidate = NULL;
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for (c = 0; c < xf86_config->num_crtc; c++)
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{
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xf86CrtcPtr crtc = xf86_config->crtc[c];
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if (crtc->rotation != RR_Rotate_0 && crtc->enabled)
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{
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RegionRec crtc_damage;
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/* compute portion of damage that overlaps crtc */
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REGION_INIT(pScreen, &crtc_damage, &crtc->bounds, 1);
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REGION_INTERSECT (pScreen, &crtc_damage, &crtc_damage, region);
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/* update damaged region */
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if (REGION_NOTEMPTY(pScreen, &crtc_damage))
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xf86RotateCrtcRedisplay (crtc, &crtc_damage);
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REGION_UNINIT (pScreen, &crtc_damage);
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}
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}
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pScreen->SourceValidate = SourceValidate;
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DamageEmpty(damage);
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}
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return TRUE;
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}
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static void
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xf86RotateBlockHandler(int screenNum, pointer blockData,
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pointer pTimeout, pointer pReadmask)
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{
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ScreenPtr pScreen = screenInfo.screens[screenNum];
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ScrnInfoPtr pScrn = xf86Screens[screenNum];
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xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
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pScreen->BlockHandler = xf86_config->BlockHandler;
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(*pScreen->BlockHandler) (screenNum, blockData, pTimeout, pReadmask);
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if (xf86RotateRedisplay(pScreen))
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{
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/* Re-wrap if rotation is still happening */
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xf86_config->BlockHandler = pScreen->BlockHandler;
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pScreen->BlockHandler = xf86RotateBlockHandler;
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}
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}
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static void
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xf86RotateDestroy (xf86CrtcPtr crtc)
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{
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ScrnInfoPtr pScrn = crtc->scrn;
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ScreenPtr pScreen = pScrn->pScreen;
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xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
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int c;
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/* Free memory from rotation */
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if (crtc->rotatedPixmap || crtc->rotatedData)
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{
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crtc->funcs->shadow_destroy (crtc, crtc->rotatedPixmap, crtc->rotatedData);
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crtc->rotatedPixmap = NULL;
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crtc->rotatedData = NULL;
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}
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for (c = 0; c < xf86_config->num_crtc; c++)
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if (xf86_config->crtc[c]->transform_in_use)
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return;
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/*
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* Clean up damage structures when no crtcs are rotated
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*/
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if (xf86_config->rotation_damage)
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{
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/* Free damage structure */
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if (xf86_config->rotation_damage_registered)
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{
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DamageUnregister (&(*pScreen->GetScreenPixmap)(pScreen)->drawable,
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xf86_config->rotation_damage);
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xf86_config->rotation_damage_registered = FALSE;
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}
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DamageDestroy (xf86_config->rotation_damage);
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xf86_config->rotation_damage = NULL;
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}
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}
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_X_EXPORT void
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xf86RotateFreeShadow(ScrnInfoPtr pScrn)
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{
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xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(pScrn);
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int c;
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for (c = 0; c < config->num_crtc; c++) {
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xf86CrtcPtr crtc = config->crtc[c];
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if (crtc->rotatedPixmap || crtc->rotatedData) {
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crtc->funcs->shadow_destroy(crtc, crtc->rotatedPixmap,
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crtc->rotatedData);
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crtc->rotatedPixmap = NULL;
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crtc->rotatedData = NULL;
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}
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}
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}
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_X_EXPORT void
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xf86RotateCloseScreen (ScreenPtr screen)
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{
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ScrnInfoPtr scrn = xf86Screens[screen->myNum];
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xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
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int c;
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for (c = 0; c < xf86_config->num_crtc; c++)
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xf86RotateDestroy (xf86_config->crtc[c]);
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}
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_X_EXPORT Bool
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xf86CrtcRotate (xf86CrtcPtr crtc, DisplayModePtr mode, Rotation rotation)
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{
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ScrnInfoPtr pScrn = crtc->scrn;
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xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
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/* if this is called during ScreenInit() we don't have pScrn->pScreen yet */
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ScreenPtr pScreen = screenInfo.screens[pScrn->scrnIndex];
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PictTransform crtc_to_fb, fb_to_crtc;
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PictureTransformIdentity (&crtc_to_fb);
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PictureTransformIdentity (&fb_to_crtc);
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PictureTransformIsInverse ("identity", &crtc_to_fb, &fb_to_crtc);
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if (rotation != RR_Rotate_0)
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{
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xFixed rot_cos, rot_sin, rot_dx, rot_dy;
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xFixed scale_x, scale_y, scale_dx, scale_dy;
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int mode_w = crtc->mode.HDisplay;
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int mode_h = crtc->mode.VDisplay;
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/* rotation */
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switch (rotation & 0xf) {
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default:
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case RR_Rotate_0:
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rot_cos = F ( 1); rot_sin = F ( 0);
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rot_dx = F ( 0); rot_dy = F ( 0);
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break;
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case RR_Rotate_90:
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rot_cos = F ( 0); rot_sin = F ( 1);
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rot_dx = F ( mode_h); rot_dy = F (0);
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break;
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case RR_Rotate_180:
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rot_cos = F (-1); rot_sin = F ( 0);
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rot_dx = F (mode_w); rot_dy = F ( mode_h);
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break;
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case RR_Rotate_270:
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rot_cos = F ( 0); rot_sin = F (-1);
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rot_dx = F ( 0); rot_dy = F ( mode_w);
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break;
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}
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PictureTransformRotate (&crtc_to_fb, &fb_to_crtc, rot_cos, rot_sin);
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PictureTransformIsInverse ("rotate", &crtc_to_fb, &fb_to_crtc);
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PictureTransformTranslate (&crtc_to_fb, &fb_to_crtc, rot_dx, rot_dy);
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PictureTransformIsInverse ("rotate translate", &crtc_to_fb, &fb_to_crtc);
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/* reflection */
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scale_x = F (1);
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scale_dx = 0;
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scale_y = F (1);
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scale_dy = 0;
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if (rotation & RR_Reflect_X)
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{
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scale_x = F(-1);
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if (rotation & (RR_Rotate_0|RR_Rotate_180))
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scale_dx = F(mode_w);
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else
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scale_dx = F(mode_h);
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}
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if (rotation & RR_Reflect_Y)
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{
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scale_y = F(-1);
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if (rotation & (RR_Rotate_0|RR_Rotate_180))
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scale_dy = F(mode_h);
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else
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scale_dy = F(mode_w);
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}
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PictureTransformScale (&crtc_to_fb, &fb_to_crtc, scale_x, scale_y);
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PictureTransformIsInverse ("scale", &crtc_to_fb, &fb_to_crtc);
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PictureTransformTranslate (&crtc_to_fb, &fb_to_crtc, scale_dx, scale_dy);
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PictureTransformIsInverse ("scale translate", &crtc_to_fb, &fb_to_crtc);
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}
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/*
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* If the untranslated transformation is the identity,
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* disable the shadow buffer
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*/
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if (PictureTransformIsIdentity (&crtc_to_fb))
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{
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crtc->transform_in_use = FALSE;
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PictureTransformInitTranslate (&crtc->crtc_to_framebuffer,
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F (-crtc->x), F (-crtc->y));
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PictureTransformInitTranslate (&crtc->framebuffer_to_crtc,
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F ( crtc->x), F ( crtc->y));
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xf86RotateDestroy (crtc);
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}
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else
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{
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PictureTransformTranslate (&crtc_to_fb, &fb_to_crtc, F(crtc->x), F(crtc->y));
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PictureTransformIsInverse ("offset", &crtc_to_fb, &fb_to_crtc);
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/*
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* these are the size of the shadow pixmap, which
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* matches the mode, not the pre-rotated copy in the
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* frame buffer
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*/
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int width = mode->HDisplay;
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int height = mode->VDisplay;
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void *shadowData = crtc->rotatedData;
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PixmapPtr shadow = crtc->rotatedPixmap;
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int old_width = shadow ? shadow->drawable.width : 0;
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int old_height = shadow ? shadow->drawable.height : 0;
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/* Allocate memory for rotation */
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if (old_width != width || old_height != height)
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{
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if (shadow || shadowData)
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{
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crtc->funcs->shadow_destroy (crtc, shadow, shadowData);
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crtc->rotatedPixmap = NULL;
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crtc->rotatedData = NULL;
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}
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shadowData = crtc->funcs->shadow_allocate (crtc, width, height);
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if (!shadowData)
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goto bail1;
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crtc->rotatedData = shadowData;
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/* shadow will be damaged in xf86RotatePrepare */
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}
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else
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{
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/* mark shadowed area as damaged so it will be repainted */
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xf86CrtcDamageShadow (crtc);
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}
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if (!xf86_config->rotation_damage)
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{
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/* Create damage structure */
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xf86_config->rotation_damage = DamageCreate (NULL, NULL,
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DamageReportNone,
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TRUE, pScreen, pScreen);
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if (!xf86_config->rotation_damage)
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goto bail2;
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/* Wrap block handler */
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xf86_config->BlockHandler = pScreen->BlockHandler;
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pScreen->BlockHandler = xf86RotateBlockHandler;
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}
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if (0)
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{
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bail2:
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if (shadow || shadowData)
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{
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crtc->funcs->shadow_destroy (crtc, shadow, shadowData);
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crtc->rotatedPixmap = NULL;
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crtc->rotatedData = NULL;
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}
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bail1:
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if (old_width && old_height)
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crtc->rotatedPixmap = crtc->funcs->shadow_create (crtc,
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NULL,
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old_width,
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old_height);
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return FALSE;
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}
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crtc->transform_in_use = TRUE;
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crtc->crtc_to_framebuffer = crtc_to_fb;
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crtc->framebuffer_to_crtc = fb_to_crtc;
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crtc->bounds.x1 = 0;
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crtc->bounds.x2 = crtc->mode.HDisplay;
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crtc->bounds.y1 = 0;
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crtc->bounds.y2 = crtc->mode.VDisplay;
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PictureTransformBounds (&crtc->bounds, &crtc_to_fb);
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}
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/* All done */
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return TRUE;
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}
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