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Fix spelling errors, add description of SCANOUTPIXMAPINFO fields.

Browse source 
Review results from Aaron Plattner.

Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Keith Packard 2010-12-06 10:01:21 -08:00
parent ebab32deea
commit 3e28d3098f
2 changed files with 20 additions and 4 deletions
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1
randrproto.h
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@ -897,6 +897,7 @@ typedef struct {
} xRRSetPanningReply;
#define sz_xRRSetPanningReply 32
#undef PictFormat
#undef RRModeFlags
#undef RRCrtc
#undef RRMode

23
randrproto.txt
View file

@ -131,8 +131,7 @@ underlying hardware to clients
• Per-crtc pixmaps. This provides for multiple scan-out buffers
which applications can create and assign to arbitrary collections
of crtcs. These pixmaps can be associated with a window for use
with OpenGL or drawn to directly.
of crtcs.
• Sprite position and image transforms. These provide a projective
transform for both the hot spot location and the sprite image
@ -356,6 +355,22 @@ SCANOUTPIXMAPINFO { format: PICTFORMAT
maxWidth, maxHeight: CARD16
rotations: SETofROTATION }
'format' is the format of the pixels within the scanout
pixmap. Only 'Direct' formats are supported, this will never
be an 'Indexed' format.
'maxWidth' and 'maxHeight' define the largest supported
scanout pixmap. There is no minimum size; scanout pixmaps down
to 1x1 may be created.
'rotations' lists the set of rotations which can be provided
without additional latency or memory usage within the
environment. This typically means that they are supported
directly by the hardware. It is expected that a compositing
manager will perform other transforms as a part of the
compositing process in conjunction with the sprite transforms
described in this extension.
CRTCCONFIG { crtc: CRTC
x, y: INT16
mode: MODE
@ -363,7 +378,7 @@ CRTCCONFIG { crtc: CRTC
sprite-position-transform: TRANSFORM
sprite-image-transform: TRANSFORM
outputs: LISTofOUTPUT
pixmap: PIXMAP, None or CurrenScanoutPixmap
pixmap: PIXMAP, None or CurrentScanoutPixmap
pixmap-x, pixmap-y: INT16 }
The sprite-position-transform and sprite-image-transform
@ -373,7 +388,7 @@ CRTCCONFIG { crtc: CRTC
'pixmap' specifies the origin of the pixel data to be presented on
'crtc'. If 'pixmap' is None, then data will be presented from
the screen pixmap. If 'pixmap' is 'CurrentScanoutPixmap', then
whatever source is current in use will remain in use, whether
whatever source is currently in use will remain in use, whether
that is the screen pixmap or some other allocated scanout pixmap.
'pixmap-x' and 'pixmap-y' specify the origin of the scanout