[Mesa-dev] [PATCH 1/2] mesa: add context version routines

[Jordan Justen]

Signed-off-by: Jordan Justen <jordan.l.justen at intel.com>
---

Based on the discussion July 26-27 in the thread
"[PATCH 1/4] mesa: Add a Version field to the context
 with VersionMajor*10+VersionMinor."

 src/mesa/main/version.h |   54 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

diff --git a/src/mesa/main/version.h b/src/mesa/main/version.h
index 94a9855..6e13c6c 100644
--- a/src/mesa/main/version.h
+++ b/src/mesa/main/version.h
@@ -27,6 +27,11 @@
 #ifndef VERSION_H
 #define VERSION_H

+#include "mtypes.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif

 struct gl_context;

@@ -48,4 +53,53 @@ _mesa_compute_version(struct gl_context *ctx);
 extern void
 _mesa_override_glsl_version(struct gl_context *ctx);

+/**
+ * Merge major/minor into a comparable uint
+ */
+static inline GLuint
+_mesa_uint_version(int major, int minor)
+{
+    return major * 10 + minor;
+}
+
+/**
+ * Return the GL major version of the context
+ */
+static inline GLuint
+_mesa_get_version_major(struct gl_context *ctx)
+{
+    return ctx->Version / 10;
+}
+
+/**
+ * Return the GL minor version of the context
+ */
+static inline GLuint
+_mesa_get_version_minor(struct gl_context *ctx)
+{
+    return ctx->Version % 10;
+}
+
+/**
+ * Sets the context version to major.minor
+ */
+static inline void
+_mesa_set_version(struct gl_context *ctx, int major, int minor)
+{
+    ctx->Version = _mesa_uint_version(major, minor);
+}
+
+/**
+ * Checks if the context version is greater than or equal to major.minor
+ */
+static inline GLboolean
+_mesa_have_version(const struct gl_context *ctx, int major, int minor)
+{
+    return ctx->Version >= _mesa_uint_version(major, minor);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* VERSION_H */
--
1.7.9.5