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rotation: fix cursor and overlap of one pixel. 

Commit 77c7a64e88 was introduced to fix
a cursor off by one on Intel hw, however it also move the whole crtc
into an off by one position and you could see gnom-eshell overlapping.

This commit reverts that and instead fixes the cursor hotspot
translation to work like pixman does. We add 0.5 to the cursor vector
before translating, and floor the value afterwards.

Thanks to Soeren (ssp) for pointing out where the real problem was
after explaning how pixman translates points.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
(cherry picked from commit 80d1a548d6)
This commit is contained in:
Dave Airlie 2010-06-21 10:05:08 +10:00 committed by Julien Cristau
parent 06fda4d3c8
commit 6892697640
2 changed files with 20 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
hw/xfree86/modes/xf86Cursors.c
View File

@ -327,10 +327,13 @@ xf86_crtc_set_cursor_position (xf86CrtcPtr crtc, int x, int y)
xf86CursorScreenKey);
struct pict_f_vector v;
v.v[0] = x + ScreenPriv->HotX; v.v[1] = y + ScreenPriv->HotY; v.v[2] = 1;
v.v[0] = (x + ScreenPriv->HotX) + 0.5;
v.v[1] = (y + ScreenPriv->HotY) + 0.5;
v.v[2] = 1;
pixman_f_transform_point (&crtc->f_framebuffer_to_crtc, &v);
x = floor (v.v[0] + 0.5);
y = floor (v.v[1] + 0.5);
/* cursor will have 0.5 added to it already so floor is sufficent */
x = floor (v.v[0]);
y = floor (v.v[1]);
/*
* Transform position of cursor upper left corner
*/

28
randr/rrtransform.c
View File

@ -185,21 +185,21 @@ RRTransformCompute (int x,
break;
case RR_Rotate_90:
f_rot_cos = 0; f_rot_sin = 1;
f_rot_dx = height-1; f_rot_dy = 0;
f_rot_dx = height; f_rot_dy = 0;
rot_cos = F ( 0); rot_sin = F ( 1);
rot_dx = F (height-1); rot_dy = F (0);
rot_dx = F ( height); rot_dy = F (0);
break;
case RR_Rotate_180:
f_rot_cos = -1; f_rot_sin = 0;
f_rot_dx = width - 1; f_rot_dy = height - 1;
f_rot_dx = width; f_rot_dy = height;
rot_cos = F (-1); rot_sin = F ( 0);
rot_dx = F (width-1); rot_dy = F ( height-1);
rot_dx = F (width); rot_dy = F ( height);
break;
case RR_Rotate_270:
f_rot_cos = 0; f_rot_sin = -1;
f_rot_dx = 0; f_rot_dy = width-1;
f_rot_dx = 0; f_rot_dy = width;
rot_cos = F ( 0); rot_sin = F (-1);
rot_dx = F ( 0); rot_dy = F ( width-1);
rot_dx = F ( 0); rot_dy = F ( width);
break;
}
@ -222,11 +222,11 @@ RRTransformCompute (int x,
f_scale_x = -1;
scale_x = F(-1);
if (rotation & (RR_Rotate_0|RR_Rotate_180)) {
f_scale_dx = width-1;
scale_dx = F(width-1);
f_scale_dx = width;
scale_dx = F(width);
} else {
f_scale_dx = height-1;
scale_dx = F(height-1);
f_scale_dx = height;
scale_dx = F(height);
}
}
if (rotation & RR_Reflect_Y)
@ -234,11 +234,11 @@ RRTransformCompute (int x,
f_scale_y = -1;
scale_y = F(-1);
if (rotation & (RR_Rotate_0|RR_Rotate_180)) {
f_scale_dy = height-1;
scale_dy = F(height-1);
f_scale_dy = height;
scale_dy = F(height);
} else {
f_scale_dy = width-1;
scale_dy = F(width-1);
f_scale_dy = width;
scale_dy = F(width);
}
}