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path: root/hw/xfree86/modes/xf86Rotate.c
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Diffstat (limited to 'hw/xfree86/modes/xf86Rotate.c')
-rw-r--r--hw/xfree86/modes/xf86Rotate.c212
1 files changed, 3 insertions, 209 deletions
diff --git a/hw/xfree86/modes/xf86Rotate.c b/hw/xfree86/modes/xf86Rotate.c
index 5ab2bf89a..7967e5b28 100644
--- a/hw/xfree86/modes/xf86Rotate.c
+++ b/hw/xfree86/modes/xf86Rotate.c
@@ -70,205 +70,9 @@ compWindowFormat (WindowPtr 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 (&t);
- ErrorF ("\n");
- return FALSE;
- }
- return TRUE;
-}
-
-static void
xf86RotateCrtcRedisplay (xf86CrtcPtr crtc, RegionPtr region)
{
ScrnInfoPtr scrn = crtc->scrn;
@@ -516,9 +320,8 @@ xf86CrtcRotate (xf86CrtcPtr crtc, DisplayModePtr mode, Rotation rotation)
ScreenPtr pScreen = screenInfo.screens[pScrn->scrnIndex];
PictTransform crtc_to_fb, fb_to_crtc;
- PictureTransformIdentity (&crtc_to_fb);
- PictureTransformIdentity (&fb_to_crtc);
- PictureTransformIsInverse ("identity", &crtc_to_fb, &fb_to_crtc);
+ PictureTransformInitIdentity (&crtc_to_fb);
+ PictureTransformInitIdentity (&fb_to_crtc);
if (rotation != RR_Rotate_0)
{
xFixed rot_cos, rot_sin, rot_dx, rot_dy;
@@ -548,10 +351,7 @@ xf86CrtcRotate (xf86CrtcPtr crtc, DisplayModePtr mode, Rotation rotation)
}
PictureTransformRotate (&crtc_to_fb, &fb_to_crtc, rot_cos, rot_sin);
- PictureTransformIsInverse ("rotate", &crtc_to_fb, &fb_to_crtc);
-
PictureTransformTranslate (&crtc_to_fb, &fb_to_crtc, rot_dx, rot_dy);
- PictureTransformIsInverse ("rotate translate", &crtc_to_fb, &fb_to_crtc);
/* reflection */
scale_x = F (1);
@@ -576,19 +376,14 @@ xf86CrtcRotate (xf86CrtcPtr crtc, DisplayModePtr mode, Rotation rotation)
}
PictureTransformScale (&crtc_to_fb, &fb_to_crtc, scale_x, scale_y);
- PictureTransformIsInverse ("scale", &crtc_to_fb, &fb_to_crtc);
-
PictureTransformTranslate (&crtc_to_fb, &fb_to_crtc, scale_dx, scale_dy);
- PictureTransformIsInverse ("scale translate", &crtc_to_fb, &fb_to_crtc);
-
}
#ifdef RANDR_12_INTERFACE
{
PictTransform user_forward, user_reverse;
- if (RRCrtcGetTransform (crtc->randr_crtc, &user_forward, &user_reverse))
+ if (crtc->randr_crtc && RRCrtcGetTransform (crtc->randr_crtc, &user_forward, &user_reverse))
{
- PictureTransformIsInverse ("user", &user_forward, &user_reverse);
PictureTransformMultiply (&crtc_to_fb, &user_forward, &crtc_to_fb);
PictureTransformMultiply (&fb_to_crtc, &fb_to_crtc, &user_reverse);
}
@@ -614,7 +409,6 @@ xf86CrtcRotate (xf86CrtcPtr crtc, DisplayModePtr mode, Rotation rotation)
PixmapPtr shadow;
PictureTransformTranslate (&crtc_to_fb, &fb_to_crtc, F(crtc->x), F(crtc->y));
- PictureTransformIsInverse ("offset", &crtc_to_fb, &fb_to_crtc);
/*
* these are the size of the shadow pixmap, which
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-20 22:07:42 +0000