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<title>src/sys/dev/syscons/scgfbrndr.c, branch releng/14.2</title>
<subtitle>FreeBSD source tree</subtitle>
<link rel='alternate' type='text/html' href='http://cgit.freebsd.org/src/'/>
<entry>
<title>sys: Remove $FreeBSD$: one-line .c pattern</title>
<updated>2023-08-16T17:54:36+00:00</updated>
<author>
<name>Warner Losh</name>
<email>imp@FreeBSD.org</email>
</author>
<published>2023-08-16T17:54:36+00:00</published>
<link rel='alternate' type='text/html' href='http://cgit.freebsd.org/src/commit/?id=685dc743dc3b5645e34836464128e1c0558b404b'/>
<id>685dc743dc3b5645e34836464128e1c0558b404b</id>
<content type='text'>
Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
</pre>
</div>
</content>
</entry>
<entry>
<title>spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD</title>
<updated>2023-05-12T16:44:03+00:00</updated>
<author>
<name>Warner Losh</name>
<email>imp@FreeBSD.org</email>
</author>
<published>2023-05-10T15:40:58+00:00</published>
<link rel='alternate' type='text/html' href='http://cgit.freebsd.org/src/commit/?id=4d846d260e2b9a3d4d0a701462568268cbfe7a5b'/>
<id>4d846d260e2b9a3d4d0a701462568268cbfe7a5b</id>
<content type='text'>
The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with:		pfg
MFC After:		3 days
Sponsored by:		Netflix
</content>
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<pre>
The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with:		pfg
MFC After:		3 days
Sponsored by:		Netflix
</pre>
</div>
</content>
</entry>
<entry>
<title>Remove remaning definition of GFB_&lt;foo&gt; options.</title>
<updated>2020-12-05T19:44:00+00:00</updated>
<author>
<name>Michal Meloun</name>
<email>mmel@FreeBSD.org</email>
</author>
<published>2020-12-05T19:44:00+00:00</published>
<link rel='alternate' type='text/html' href='http://cgit.freebsd.org/src/commit/?id=23e0c68a47f3b75ffdfeb61bf3ce65d52cb12cdf'/>
<id>23e0c68a47f3b75ffdfeb61bf3ce65d52cb12cdf</id>
<content type='text'>
They are not used in source files.
This fixes build of some arm boards after r368159.

Reported by: mjg
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<pre>
They are not used in source files.
This fixes build of some arm boards after r368159.

Reported by: mjg
</pre>
</div>
</content>
</entry>
<entry>
<title>syscons: clean up empty lines in .c and .h files</title>
<updated>2020-09-01T21:29:44+00:00</updated>
<author>
<name>Mateusz Guzik</name>
<email>mjg@FreeBSD.org</email>
</author>
<published>2020-09-01T21:29:44+00:00</published>
<link rel='alternate' type='text/html' href='http://cgit.freebsd.org/src/commit/?id=d63738087ebc42e331a8147c74b690c1f0923f6b'/>
<id>d63738087ebc42e331a8147c74b690c1f0923f6b</id>
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</content>
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<pre>
</pre>
</div>
</content>
</entry>
<entry>
<title>Remove sparc64 kernel support</title>
<updated>2020-02-03T17:35:11+00:00</updated>
<author>
<name>Warner Losh</name>
<email>imp@FreeBSD.org</email>
</author>
<published>2020-02-03T17:35:11+00:00</published>
<link rel='alternate' type='text/html' href='http://cgit.freebsd.org/src/commit/?id=58aa35d42975c298ca0adba705c042596303c9f5'/>
<id>58aa35d42975c298ca0adba705c042596303c9f5</id>
<content type='text'>
Remove all sparc64 specific files
Remove all sparc64 ifdefs
Removee indireeect sparc64 ifdefs
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<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Remove all sparc64 specific files
Remove all sparc64 ifdefs
Removee indireeect sparc64 ifdefs
</pre>
</div>
</content>
</entry>
<entry>
<title>sys/dev: further adoption of SPDX licensing ID tags.</title>
<updated>2017-11-27T14:52:40+00:00</updated>
<author>
<name>Pedro F. Giffuni</name>
<email>pfg@FreeBSD.org</email>
</author>
<published>2017-11-27T14:52:40+00:00</published>
<link rel='alternate' type='text/html' href='http://cgit.freebsd.org/src/commit/?id=718cf2ccb9956613756ab15d7a0e28f2c8e91cab'/>
<id>718cf2ccb9956613756ab15d7a0e28f2c8e91cab</id>
<content type='text'>
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
</pre>
</div>
</content>
</entry>
<entry>
<title>Special rendering methods for removing mouse cursors cannot be removed</title>
<updated>2017-04-10T06:19:09+00:00</updated>
<author>
<name>Bruce Evans</name>
<email>bde@FreeBSD.org</email>
</author>
<published>2017-04-10T06:19:09+00:00</published>
<link rel='alternate' type='text/html' href='http://cgit.freebsd.org/src/commit/?id=f3ac3a6e6f51569b666257bd44c0c0123a9297bb'/>
<id>f3ac3a6e6f51569b666257bd44c0c0123a9297bb</id>
<content type='text'>
like I hoped, since they are needed for removing parts over the border.
Continue fixing bugs in them.

In the vga planar mode renderer, remove removal of the part of the
image over the text window.  This was hard-coded for nearly 8x16 fonts
and in practice didn't remove enough for 8x8 fonts.  This used the
wrong attribute over cutmarked regions.  The caller refreshes with the
correct attribute later, so the attribute bug only caused flicker.
The caller uses the same hard-coding, so the refreshes fix up all the
spots with the wrong attribute, but keep missing the missed spots.
This still gives trails of bits of cursors for cursor motions in the
affected configurations (mainly depth 4 modes with 8x8) fonts.  8x14
fonts barely escape the problem since although the cursor is drawn
as 16x16, its active part is only 9x13 and the active part fits in
the hard-coded 2x2 character cell window for 8x14 fonts.  8x8 fonts
need a 2x3 window.

In the fb non-sparc64 renderer, the buggy image removal was buggier
and was already avoided by returning before it.  Remove it completely
and fix nearby style bugs.  It was essentially the same as for the vga
planar mode renderer (obfuscated by swapping x and y).  This was buggier
since fb should handle more types of hardware so the hard-coding is
wronger.

The remaining fb image removal is also buggier.  It never supported
software cursors drawn into the border, and the hardware cursor is
probably broken by other bugs to be fixed soon.
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
like I hoped, since they are needed for removing parts over the border.
Continue fixing bugs in them.

In the vga planar mode renderer, remove removal of the part of the
image over the text window.  This was hard-coded for nearly 8x16 fonts
and in practice didn't remove enough for 8x8 fonts.  This used the
wrong attribute over cutmarked regions.  The caller refreshes with the
correct attribute later, so the attribute bug only caused flicker.
The caller uses the same hard-coding, so the refreshes fix up all the
spots with the wrong attribute, but keep missing the missed spots.
This still gives trails of bits of cursors for cursor motions in the
affected configurations (mainly depth 4 modes with 8x8) fonts.  8x14
fonts barely escape the problem since although the cursor is drawn
as 16x16, its active part is only 9x13 and the active part fits in
the hard-coded 2x2 character cell window for 8x14 fonts.  8x8 fonts
need a 2x3 window.

In the fb non-sparc64 renderer, the buggy image removal was buggier
and was already avoided by returning before it.  Remove it completely
and fix nearby style bugs.  It was essentially the same as for the vga
planar mode renderer (obfuscated by swapping x and y).  This was buggier
since fb should handle more types of hardware so the hard-coding is
wronger.

The remaining fb image removal is also buggier.  It never supported
software cursors drawn into the border, and the hardware cursor is
probably broken by other bugs to be fixed soon.
</pre>
</div>
</content>
</entry>
<entry>
<title>Fix removal of the keyboard cursor image in text mode, especially</title>
<updated>2017-04-08T08:24:25+00:00</updated>
<author>
<name>Bruce Evans</name>
<email>bde@FreeBSD.org</email>
</author>
<published>2017-04-08T08:24:25+00:00</published>
<link rel='alternate' type='text/html' href='http://cgit.freebsd.org/src/commit/?id=e53fbbe661354620cfc25eb36e159cfa4b9dcf11'/>
<id>e53fbbe661354620cfc25eb36e159cfa4b9dcf11</id>
<content type='text'>
in the vga renderer.  Removal used stale attributes and didn't try to
merge with the current attribute for cut marking, so special rendering
of cut marking was lost in many cases.  The gfb renderer is too broken
to support special rendering of cut marking at all, so this change is
supposed to be just a style fix for it.  Remove all traces of the
saveunder method which was used to implement this bug.

Fix drawing of the cursor image in text mode, only in the vga
renderer.  This used a stale attribute from the frame buffer instead
of from the saveunder, but did merge with the current attribute for
cut marking so it caused less obvious bugs (subtle misrendering for
the character under the cursor).

The saveunder method may be good in simpler drivers, but in syscons
the 'under' is already saved in a better way in the vtb.  Just redraw
it from there, with visible complications for cut marking and
invisible complications for mouse cursors.  Almost all drawing
requests are passed a flag 'flip' which currently means to flip to
reverse video for characters in the cut marking region, but should
mean that the the characters are in the cut marking regions so should
be rendered specially, preferably using something better than reverse
video.  The gfb renderer always ignores this flag.  The vga renderer
ignored it for removal of the text cursor -- the saveunder gave the
stale rendering at the time the cursor was drawn.  Mouse cursors need
even more complicated methods.  They are handled by drawing them last
and removing them first.  Removing them usually redraws many other
characters with the correct cut marking (but transiently loses the
keyboard cursor, which is redrawn soon).  This tended to hide the
saveunder bug for forward motions of the keyboard cursor.  But slow
backward motions of the keyboard cursor always lost the cut marking,
and fast backwards motions lost in for about 4 in every 5 characters,
depending on races with the scrn_update() timeout handler.  This is
because the forward motions are usually into the region redrawn for
the mouse cursor, while backwards motions rarely are.

Text cursor drawing in the vga renderer used also used a
possibly-stale copy of the character and its attribute.  The vga
render has the "optimization" of sometimes reading characters from the
screen instead of from the vtb (this was not so good even in 1990 when
main memory was only a few times faster than video RAM).  Due to care
in update orders, the character is never stale, but its attribute
might be (just the cut marking part, again due to care in order).

gfb doesn't have the scp-&gt;scr pointer used for the "optimization", and
vga only uses this pointer for text mode.  So most cases have to
refresh from the vtb, and we can be sure that the ordering of vtb
updates and drawing is as required for this to work.
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
in the vga renderer.  Removal used stale attributes and didn't try to
merge with the current attribute for cut marking, so special rendering
of cut marking was lost in many cases.  The gfb renderer is too broken
to support special rendering of cut marking at all, so this change is
supposed to be just a style fix for it.  Remove all traces of the
saveunder method which was used to implement this bug.

Fix drawing of the cursor image in text mode, only in the vga
renderer.  This used a stale attribute from the frame buffer instead
of from the saveunder, but did merge with the current attribute for
cut marking so it caused less obvious bugs (subtle misrendering for
the character under the cursor).

The saveunder method may be good in simpler drivers, but in syscons
the 'under' is already saved in a better way in the vtb.  Just redraw
it from there, with visible complications for cut marking and
invisible complications for mouse cursors.  Almost all drawing
requests are passed a flag 'flip' which currently means to flip to
reverse video for characters in the cut marking region, but should
mean that the the characters are in the cut marking regions so should
be rendered specially, preferably using something better than reverse
video.  The gfb renderer always ignores this flag.  The vga renderer
ignored it for removal of the text cursor -- the saveunder gave the
stale rendering at the time the cursor was drawn.  Mouse cursors need
even more complicated methods.  They are handled by drawing them last
and removing them first.  Removing them usually redraws many other
characters with the correct cut marking (but transiently loses the
keyboard cursor, which is redrawn soon).  This tended to hide the
saveunder bug for forward motions of the keyboard cursor.  But slow
backward motions of the keyboard cursor always lost the cut marking,
and fast backwards motions lost in for about 4 in every 5 characters,
depending on races with the scrn_update() timeout handler.  This is
because the forward motions are usually into the region redrawn for
the mouse cursor, while backwards motions rarely are.

Text cursor drawing in the vga renderer used also used a
possibly-stale copy of the character and its attribute.  The vga
render has the "optimization" of sometimes reading characters from the
screen instead of from the vtb (this was not so good even in 1990 when
main memory was only a few times faster than video RAM).  Due to care
in update orders, the character is never stale, but its attribute
might be (just the cut marking part, again due to care in order).

gfb doesn't have the scp-&gt;scr pointer used for the "optimization", and
vga only uses this pointer for text mode.  So most cases have to
refresh from the vtb, and we can be sure that the ordering of vtb
updates and drawing is as required for this to work.
</pre>
</div>
</content>
</entry>
<entry>
<title>Replace explicit calls to video methods with their respective variants</title>
<updated>2007-12-29T23:26:59+00:00</updated>
<author>
<name>Wojciech A. Koszek</name>
<email>wkoszek@FreeBSD.org</email>
</author>
<published>2007-12-29T23:26:59+00:00</published>
<link rel='alternate' type='text/html' href='http://cgit.freebsd.org/src/commit/?id=9336e0699bda8a301cd2bfa37106b6ec5e32012e'/>
<id>9336e0699bda8a301cd2bfa37106b6ec5e32012e</id>
<content type='text'>
implemented with macros. This patch improves code readability. Reasoning
behind vidd_* is a sort of "video discipline".

List of macros is supposed to be complete--all methods of video_switch
ought to have their respective macros from now on.

Functionally, this code should be no-op. My intention is to leave current
behaviour of touched code as is.

No objections:	rwatson
Silence on:	freebsd-current@
Approved by:	cognet
</content>
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<pre>
implemented with macros. This patch improves code readability. Reasoning
behind vidd_* is a sort of "video discipline".

List of macros is supposed to be complete--all methods of video_switch
ought to have their respective macros from now on.

Functionally, this code should be no-op. My intention is to leave current
behaviour of touched code as is.

No objections:	rwatson
Silence on:	freebsd-current@
Approved by:	cognet
</pre>
</div>
</content>
</entry>
<entry>
<title>According to the default font size on sparc64 provide a 12 x 22</title>
<updated>2007-06-18T22:15:17+00:00</updated>
<author>
<name>Marius Strobl</name>
<email>marius@FreeBSD.org</email>
</author>
<published>2007-06-18T22:15:17+00:00</published>
<link rel='alternate' type='text/html' href='http://cgit.freebsd.org/src/commit/?id=7ca851e3a5bb29e5bf08995205613b8ff6e33466'/>
<id>7ca851e3a5bb29e5bf08995205613b8ff6e33466</id>
<content type='text'>
mouse pointer instead of a 8 x 16 one so device drivers don't
need to bring there own one there and in gfb_mouse() (ab)use
the pixel_mask argument of putm() to pass along on/off info as
erasing the mouse cursor image by redrawing the text underneath
doesn't work as we use hardware cursors on sparc64.
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
mouse pointer instead of a 8 x 16 one so device drivers don't
need to bring there own one there and in gfb_mouse() (ab)use
the pixel_mask argument of putm() to pass along on/off info as
erasing the mouse cursor image by redrawing the text underneath
doesn't work as we use hardware cursors on sparc64.
</pre>
</div>
</content>
</entry>
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