24 lines
718 B
C
24 lines
718 B
C
$NetBSD$
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This single patch allows glxgears to run properly on
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an Intel integrated graphics IvyBridge machine on DragonFly.
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libdrm atomic_add_unless() may reverse return value meaning
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https://bugs.freedesktop.org/show_bug.cgi?id=100077
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This does not seem the correct choice in mesa3d.
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--- src/gallium/drivers/iris/iris_bufmgr.c.orig 2019-03-30 17:05:31.000000000 +0000
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+++ src/gallium/drivers/iris/iris_bufmgr.c
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@@ -114,7 +114,11 @@ atomic_add_unless(int *v, int add, int u
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c = p_atomic_read(v);
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while (c != unless && (old = p_atomic_cmpxchg(v, c, c + add)) != c)
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c = old;
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+#if defined(INVERT_ATOMIC_ADD_UNLESS)
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+ return c != unless;
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+#else
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return c == unless;
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+#endif
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}
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static const char *
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