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From: Robert Fekete <robert.fekete@linux.intel.com>
To: dri-devel@lists.freedesktop.org
Cc: intel-gfx@lists.freedesktop.org
Subject: [PATCH] drm: Describe the Rotation property bits.
Date: Mon,  2 Nov 2015 15:24:15 +0100	[thread overview]
Message-ID: <1446474255-18311-1-git-send-email-robert.fekete@linux.intel.com> (raw)

    Adds clarification of the rotation property bits. I.e. rotation is
    Counter clockwise and that reflects are applied before any rotation.

Signed-off-by: Robert Fekete <robert.fekete@linux.intel.com>
---
 include/drm/drm_crtc.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 3f0c6909dda1..45334fa0cb10 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -85,7 +85,11 @@ static inline uint64_t I642U64(int64_t val)
 	return (uint64_t)*((uint64_t *)&val);
 }
 
-/* rotation property bits */
+/*
+ * Rotation property bits. Rotate-(degrees) rotates the image by the specified
+ * amount in degrees in counter clockwise direction. reflect-x and reflect-y
+ * reflects the image along the specified axis prior to rotation
+ */
 #define DRM_ROTATE_MASK 0x0f
 #define DRM_ROTATE_0	0
 #define DRM_ROTATE_90	1
-- 
1.9.1

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             reply	other threads:[~2015-11-02 14:24 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-11-02 14:24 Robert Fekete [this message]
2015-11-02 14:50 ` [Intel-gfx] [PATCH] drm: Describe the Rotation property bits Ville Syrjälä
2015-11-02 15:13   ` Robert Fekete

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