diff options
| author | Keith Packard <keithp@keithp.com> | 2008-03-19 00:46:35 -0700 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2008-11-24 13:24:40 -0800 |
| commit | 49db14e4ac26070ed86088419483888dda18b603 (patch) | |
| tree | 24f45d2c6117e204cf489633ac29eedccce9688f /randr/randrstr.h | |
| parent | 6f734aecaec4f5c6152c3ebca197ef65bb4523da (diff) | |
Handle RandR transform matrices in floating point.
RandR matrix computations lose too much precision in fixed point;
computations using the inverted matrix can be as much as 10 pixels off.
Convert them to double precision values and pass those around. These API
changes are fairly heavyweight; the official Render interface remains fixed
point, so the fixed point matrix comes along for the ride everywhere.
Diffstat (limited to 'randr/randrstr.h')
| -rw-r--r-- | randr/randrstr.h | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/randr/randrstr.h b/randr/randrstr.h index 792c3d654..5ac983d90 100644 --- a/randr/randrstr.h +++ b/randr/randrstr.h @@ -107,7 +107,8 @@ struct _rrProperty { struct _rrTransform { PictTransform transform; - PictTransform inverse; + struct pict_f_transform f_transform; + struct pict_f_transform f_inverse; PictFilterPtr filter; xFixed *params; int nparams; @@ -134,7 +135,8 @@ struct _rrCrtc { RRTransformRec client_pending_transform; RRTransformRec client_current_transform; PictTransform transform; - PictTransform inverse; + struct pict_f_transform f_transform; + struct pict_f_transform f_inverse; }; struct _rrOutput { @@ -616,14 +618,16 @@ RRCrtcGetScanoutSize(RRCrtcPtr crtc, int *width, int *height); * Return TRUE if the resulting transform is not a simple translation. */ Bool -RRComputeTransform (RRModePtr mode, - Rotation rotation, - int x, - int y, - PictTransformPtr client_transform, - PictTransformPtr client_inverse, - PictTransformPtr transform, - PictTransformPtr inverse); +RRComputeTransform (int x, + int y, + int width, + int height, + Rotation rotation, + RRTransformPtr rr_transform, + + PictTransformPtr transform, + struct pict_f_transform *f_transform, + struct pict_f_transform *f_inverse); /* * Return crtc transform @@ -657,7 +661,8 @@ RRCrtcDestroy (RRCrtcPtr crtc); int RRCrtcTransformSet (RRCrtcPtr crtc, PictTransformPtr transform, - PictTransformPtr inverse, + struct pict_f_transform *f_transform, + struct pict_f_transform *f_inverse, char *filter, int filter_len, xFixed *params, |