diff options
| author | Eric Anholt <eric@anholt.net> | 2007-01-18 13:02:26 -0800 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2007-01-18 13:02:26 -0800 |
| commit | b296cd9b8f63ab80e8fe46fcfcdba2e9af846468 (patch) | |
| tree | a06df14a19f94df2a2e8c60d7e9b5ecc6abe6c6f /src | |
| parent | d2ae2e2ccc3a8e7dc84745c235836cba150754d8 (diff) | |
Fix transformation matrices for rotation at 90 and 270 degrees.
Diffstat (limited to 'src')
| -rw-r--r-- | src/i830_xf86Rotate.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/src/i830_xf86Rotate.c b/src/i830_xf86Rotate.c index 670ad7ac..8da79b6f 100644 --- a/src/i830_xf86Rotate.c +++ b/src/i830_xf86Rotate.c @@ -144,23 +144,20 @@ xf86RotateCrtcRedisplay (xf86CrtcPtr crtc, RegionPtr region) transform.matrix[1][1] = IntToxFixed(1); break; case RR_Rotate_90: - /* XXX probably wrong */ - transform.matrix[0][1] = IntToxFixed(1); - transform.matrix[1][0] = IntToxFixed(-1); - transform.matrix[1][2] += IntToxFixed(crtc->mode.HDisplay); + transform.matrix[0][1] = IntToxFixed(-1); + transform.matrix[1][0] = IntToxFixed(1); + transform.matrix[0][2] += IntToxFixed(crtc->mode.VDisplay); break; case RR_Rotate_180: - /* XXX probably wrong */ transform.matrix[0][0] = IntToxFixed(-1); transform.matrix[1][1] = IntToxFixed(-1); transform.matrix[0][2] += IntToxFixed(crtc->mode.HDisplay); transform.matrix[1][2] += IntToxFixed(crtc->mode.VDisplay); break; case RR_Rotate_270: - /* XXX probably wrong */ - transform.matrix[0][1] = IntToxFixed(-1); - transform.matrix[1][0] = IntToxFixed(1); - transform.matrix[0][2] += IntToxFixed(crtc->mode.VDisplay); + transform.matrix[0][1] = IntToxFixed(1); + transform.matrix[1][0] = IntToxFixed(-1); + transform.matrix[1][2] += IntToxFixed(crtc->mode.VDisplay); break; } |