[waffle] [PATCH 2/4] waffle internals: Add helper functions for attrs versions

[Jordan Justen]

These functions make it easier to compare against known OpenGL and
OpenGLES versions since all known and expected future versions have a
minor version <= 9.

For example, to check that the attrs struct has a version >= 3.2, use
wcore_config_attrs_version_above_or_equals(attrs, 32)

Signed-off-by: Jordan Justen <jordan.l.justen at intel.com>
---
 src/waffle/core/wcore_config_attrs.c | 48 ++++++++++++++++++++++++++++++++++++
 src/waffle/core/wcore_config_attrs.h | 25 +++++++++++++++++++
 2 files changed, 73 insertions(+)

diff --git a/src/waffle/core/wcore_config_attrs.c b/src/waffle/core/wcore_config_attrs.c
index c4b37d9..0d27516 100644
--- a/src/waffle/core/wcore_config_attrs.c
+++ b/src/waffle/core/wcore_config_attrs.c
@@ -511,3 +511,51 @@ wcore_config_attrs_parse(
 
     return true;
 }
+
+bool
+wcore_config_attrs_version_equals(
+      const struct wcore_config_attrs *attrs,
+      int merged_version)
+{
+    return
+        attrs->context_major_version == (merged_version / 10) &&
+        attrs->context_minor_version == (merged_version % 10);
+}
+
+bool
+wcore_config_attrs_version_above(
+      const struct wcore_config_attrs *attrs,
+      int merged_version)
+{
+    return
+        attrs->context_major_version > (merged_version / 10) ||
+        (attrs->context_major_version == (merged_version / 10) &&
+         attrs->context_minor_version > (merged_version % 10));
+}
+
+bool
+wcore_config_attrs_version_above_or_equals(
+      const struct wcore_config_attrs *attrs,
+      int merged_version)
+{
+    return
+        attrs->context_major_version > (merged_version / 10) ||
+        (attrs->context_major_version == (merged_version / 10) &&
+         attrs->context_minor_version >= (merged_version % 10));
+}
+
+bool
+wcore_config_attrs_version_below(
+      const struct wcore_config_attrs *attrs,
+      int merged_version)
+{
+    return !wcore_config_attrs_version_above_or_equals(attrs, merged_version);
+}
+
+bool
+wcore_config_attrs_version_below_or_equals(
+      const struct wcore_config_attrs *attrs,
+      int merged_version)
+{
+    return !wcore_config_attrs_version_above(attrs, merged_version);
+}
diff --git a/src/waffle/core/wcore_config_attrs.h b/src/waffle/core/wcore_config_attrs.h
index 4021115..b7ff1f6 100644
--- a/src/waffle/core/wcore_config_attrs.h
+++ b/src/waffle/core/wcore_config_attrs.h
@@ -60,3 +60,28 @@ bool
 wcore_config_attrs_parse(
       const int32_t waffle_attrib_list[],
       struct wcore_config_attrs *attrs);
+
+bool
+wcore_config_attrs_version_equals(
+      const struct wcore_config_attrs *attrs,
+      int merged_version);
+
+bool
+wcore_config_attrs_version_above(
+      const struct wcore_config_attrs *attrs,
+      int merged_version);
+
+bool
+wcore_config_attrs_version_above_or_equals(
+      const struct wcore_config_attrs *attrs,
+      int merged_version);
+
+bool
+wcore_config_attrs_version_below(
+      const struct wcore_config_attrs *attrs,
+      int merged_version);
+
+bool
+wcore_config_attrs_version_below_or_equals(
+      const struct wcore_config_attrs *attrs,
+      int merged_version);
-- 
1.9.2