/[pkg-src]/trunk/xorg-server/patches/xorg-server-1.17.1-mi-partial-pie-slice-filled-arcs-may-need-more-space.patch |
Contents 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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Mon Jun 15 12:22:48 2015 UTC (9 years, 3 months ago) by niro
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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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