vrend: add vrend_util.h file

For random stuff not in src/util.h

util_bitmask is too heavyweight for what I was looking for.

v2: Make macros return 0 or 1 (@davidriley)
v3: static inline macros (@gerddie)

Reviewed-by: Gert Wollny <gert.wollny@collabora.com>

src/Makefile.am

@@ -37,6 +37,7 @@ libvrend_la_SOURCES = \
         vrend_strbuf.h \
         vrend_tweaks.c \
         vrend_tweaks.h \
+        vrend_util.h \
         iov.c
 
 if HAVE_EPOXY_EGL

src/meson.build

@@ -44,7 +44,8 @@ virglrenderer_sources = [
    'vrend_shader.h',
    'vrend_strbuf.h',
    'vrend_tweaks.c',
-   'vrend_tweaks.h'
+   'vrend_tweaks.h',
+   'vrend_util.h',
 ]
 
 virglrenderer_egl_sources = [

src/vrend_util.h

@@ -0,0 +1,43 @@
+/**************************************************************************
+ *
+ * Copyright (C) 2019 Chromium.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+    **************************************************************************/
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#define BIT(n)                   (UINT32_C(1) << (n))
+
+static inline bool has_bit(uint32_t mask, uint32_t bit)
+{
+    return !!(mask & bit);
+}
+
+static inline bool has_bits(uint32_t mask, uint32_t bits)
+{
+    return !!((mask & bits) == bits);
+}
+
+static inline bool is_only_bit(uint32_t mask, uint32_t bit)
+{
+    return (mask == bit);
+}