2 files changed, 56 insertions, 0 deletions
diff --git a/src/egl/main/egldriver.c b/src/egl/main/egldriver.c
index ef1c366b30..0574f83f45 100644
--- a/src/egl/main/egldriver.c
+++ b/src/egl/main/egldriver.c
@@ -113,6 +113,13 @@ library_suffix(void)
 #endif
 
 
+#define NUM_PROBE_CACHE_SLOTS 8
+static struct {
+   EGLint keys[NUM_PROBE_CACHE_SLOTS];
+   const void *values[NUM_PROBE_CACHE_SLOTS];
+} _eglProbeCache;
+
+
 /**
  * Open the named driver and find its bootstrap function: _eglMain().
  */
@@ -569,3 +576,44 @@ _eglFindAPIs(void)
 
    return mask;
 }
+
+
+/**
+ * Set the probe cache at the given key.
+ *
+ * A key, instead of a _EGLDriver, is used to allow the probe cache to be share
+ * by multiple drivers.
+ */
+void
+_eglSetProbeCache(EGLint key, const void *val)
+{
+   EGLint idx;
+
+   for (idx = 0; idx < NUM_PROBE_CACHE_SLOTS; idx++) {
+      if (!_eglProbeCache.keys[idx] || _eglProbeCache.keys[idx] == key)
+         break;
+   }
+   assert(key > 0);
+   assert(idx < NUM_PROBE_CACHE_SLOTS);
+
+   _eglProbeCache.keys[idx] = key;
+   _eglProbeCache.values[idx] = val;
+}
+
+
+/**
+ * Return the probe cache at the given key.
+ */
+const void *
+_eglGetProbeCache(EGLint key)
+{
+   EGLint idx;
+
+   for (idx = 0; idx < NUM_PROBE_CACHE_SLOTS; idx++) {
+      if (!_eglProbeCache.keys[idx] || _eglProbeCache.keys[idx] == key)
+         break;
+   }
+
+   return (idx < NUM_PROBE_CACHE_SLOTS && _eglProbeCache.keys[idx] == key) ?
+      _eglProbeCache.values[idx] : NULL;
+}
diff --git a/src/egl/main/egldriver.h b/src/egl/main/egldriver.h
index 808b1c3fb7..d9d61297c1 100644
--- a/src/egl/main/egldriver.h
+++ b/src/egl/main/egldriver.h
@@ -66,4 +66,12 @@ PUBLIC EGLint
 _eglFindAPIs(void);
 
 
+PUBLIC void
+_eglSetProbeCache(EGLint key, const void *val);
+
+
+PUBLIC const void *
+_eglGetProbeCache(EGLint key);
+
+
 #endif /* EGLDRIVER_INCLUDED */