mesa: implement glGet(GL_TIMESTAMP) v2

This is adds a new driver function to retrieve the timestamp.

Reviewed-by: Eric Anholt <[email protected]>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h
index 687a38f4487..c8a765f47aa 100644
--- a/src/mesa/main/dd.h
+++ b/src/mesa/main/dd.h
@@ -820,6 +820,12 @@ struct dd_function_table {
                                                   GLuint name);
    void (*DeleteSamplerObject)(struct gl_context *ctx,
                                struct gl_sampler_object *samp);
+
+   /**
+    * \name Return a timestamp in nanoseconds as defined by GL_ARB_timer_query.
+    * This should be equivalent to glGetInteger64v(GL_TIMESTAMP);
+    */
+   uint64_t (*GetTimestamp)(struct gl_context *ctx);
 };