/[pkg-src]/trunk/xorg-server/patches/xorg-server-1.17.1-mi-partial-pie-slice-filled-arcs-may-need-more-space.patch |
Annotation of /trunk/xorg-server/patches/xorg-server-1.17.1-mi-partial-pie-slice-filled-arcs-may-need-more-space.patch
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Revision 2575 -
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Mon Jun 15 12:22:48 2015 UTC (9 years, 3 months ago) by niro
File size: 8539 byte(s)
Mon Jun 15 12:22:48 2015 UTC (9 years, 3 months ago) by niro
File size: 8539 byte(s)
-serveral upstream patches
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52 | <table summary='blob content' class='blob'> | ||
53 | <tr><td class='linenumbers'><pre><a id='n1' href='#n1'>1</a> | ||
54 | <a id='n2' href='#n2'>2</a> | ||
55 | <a id='n3' href='#n3'>3</a> | ||
56 | <a id='n4' href='#n4'>4</a> | ||
57 | <a id='n5' href='#n5'>5</a> | ||
58 | <a id='n6' href='#n6'>6</a> | ||
59 | <a id='n7' href='#n7'>7</a> | ||
60 | <a id='n8' href='#n8'>8</a> | ||
61 | <a id='n9' href='#n9'>9</a> | ||
62 | <a id='n10' href='#n10'>10</a> | ||
63 | <a id='n11' href='#n11'>11</a> | ||
64 | <a id='n12' href='#n12'>12</a> | ||
65 | <a id='n13' href='#n13'>13</a> | ||
66 | <a id='n14' href='#n14'>14</a> | ||
67 | <a id='n15' href='#n15'>15</a> | ||
68 | <a id='n16' href='#n16'>16</a> | ||
69 | <a id='n17' href='#n17'>17</a> | ||
70 | <a id='n18' href='#n18'>18</a> | ||
71 | <a id='n19' href='#n19'>19</a> | ||
72 | <a id='n20' href='#n20'>20</a> | ||
73 | <a id='n21' href='#n21'>21</a> | ||
74 | <a id='n22' href='#n22'>22</a> | ||
75 | <a id='n23' href='#n23'>23</a> | ||
76 | <a id='n24' href='#n24'>24</a> | ||
77 | <a id='n25' href='#n25'>25</a> | ||
78 | <a id='n26' href='#n26'>26</a> | ||
79 | <a id='n27' href='#n27'>27</a> | ||
80 | <a id='n28' href='#n28'>28</a> | ||
81 | <a id='n29' href='#n29'>29</a> | ||
82 | <a id='n30' href='#n30'>30</a> | ||
83 | <a id='n31' href='#n31'>31</a> | ||
84 | <a id='n32' href='#n32'>32</a> | ||
85 | <a id='n33' href='#n33'>33</a> | ||
86 | <a id='n34' href='#n34'>34</a> | ||
87 | <a id='n35' href='#n35'>35</a> | ||
88 | <a id='n36' href='#n36'>36</a> | ||
89 | <a id='n37' href='#n37'>37</a> | ||
90 | <a id='n38' href='#n38'>38</a> | ||
91 | <a id='n39' href='#n39'>39</a> | ||
92 | <a id='n40' href='#n40'>40</a> | ||
93 | <a id='n41' href='#n41'>41</a> | ||
94 | <a id='n42' href='#n42'>42</a> | ||
95 | </pre></td> | ||
96 | <td class='lines'><pre><code>From 41932dfbc841a1adc6512d41085ea3f8ebecb42c Mon Sep 17 00:00:00 2001 | ||
97 | From: Keith Packard <keithp@keithp.com> | ||
98 | Date: Wed, 8 Apr 2015 07:45:28 -0700 | ||
99 | Subject: [PATCH] mi: Partial pie-slice filled arcs may need more space for | ||
100 | spans | ||
101 | |||
102 | The mi filled arc code estimates that a filled arc will produce no | ||
103 | more spans than the arc is tall. This is true for most arcs except | ||
104 | for pie-slice arcs strictly between 180 and 360 degrees where the missing | ||
105 | portion of the arc faces up or down such that we get two spans on some | ||
106 | scanlines. | ||
107 | |||
108 | For those, we need to reserve room for another height/2 spans. This | ||
109 | patch just does it for all partial pie-sliced arcs to make the test | ||
110 | easier to understand; it's just over-allocating a bit of memory, so | ||
111 | that's safe. | ||
112 | |||
113 | Signed-off-by: Keith Packard <keithp@keithp.com> | ||
114 | Reviewed-by: Adam Jackson <ajax@redhat.com> | ||
115 | <span class="hl kwb">---</span> | ||
116 | mi/mifillarc.c | 5 +++++ | ||
117 | 1 file changed, 5 insertions(+) | ||
118 | |||
119 | diff --git a/mi/mifillarc.c b/mi/mifillarc.c | ||
120 | index 246d70f..888519e 100644 | ||
121 | <span class="hl kwb">--- a/mi/mifillarc.c</span> | ||
122 | <span class="hl kwa">+++ b/mi/mifillarc.c</span> | ||
123 | @@ -660,6 +660,11 @@ miPolyFillArc(DrawablePtr pDraw, GCPtr pGC, int narcs_all, xArc * parcs) | ||
124 | if (narcs && nspans + arc->height > MAX_SPANS_PER_LOOP) | ||
125 | break; | ||
126 | nspans += arc->height; | ||
127 | <span class="hl kwa">+</span> | ||
128 | <span class="hl kwa">+ /* A pie-slice arc may add another pile of spans */</span> | ||
129 | <span class="hl kwa">+ if (pGC->arcMode == ArcPieSlice &&</span> | ||
130 | <span class="hl kwa">+ (-FULLCIRCLE < arc->angle2 && arc->angle2 < FULLCIRCLE))</span> | ||
131 | <span class="hl kwa">+ nspans += (arc->height + 1) >> 1;</span> | ||
132 | } | ||
133 | |||
134 | pts = points = malloc (sizeof (DDXPointRec) * nspans + | ||
135 | <span class="hl kwb">-- </span> | ||
136 | 2.3.5 | ||
137 | |||
138 | </code></pre></td></tr></table> | ||
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