Add symbols for st_api creation.

The idea is that the state tracker manager should dlsym() for a specific
symbol to decide whether a state tracker is available.  The returned
address has type struct st_module and can be used to create the st_api.

1 files changed, 18 insertions, 0 deletions

diff --git a/st_api.h b/st_api.h
index 1908504..6d0c560 100644
--- a/st_api.h
+++ b/st_api.h
@@ -42,6 +42,11 @@
  * tracker managers.
  */
 
+#define ST_MODULE_OPENGL      "st_module_OpenGL"
+#define ST_MODULE_OPENGL_ES1  "st_module_OpenGL_ES1"
+#define ST_MODULE_OPENGL_ES2  "st_module_OpenGL_ES2"
+#define ST_MODULE_OPENVG      "st_module_OpenVG"
+
 struct pipe_context;
 struct pipe_texture;
 struct pipe_fence_handle;
@@ -315,4 +320,17 @@ struct st_api
    void (*destroy)(struct st_api *api);
 };
 
+typedef struct st_api *(*st_create_api_proc)(const struct sm_api *smapi);
+
+struct st_module
+{
+   st_create_api_proc create;
+};
+
+/* these symbols should be dynamically looked up */
+extern PUBLIC const struct st_module st_module_OpenGL;
+extern PUBLIC const struct st_module st_module_OpenGL_ES1;
+extern PUBLIC const struct st_module st_module_OpenGL_ES2;
+extern PUBLIC const struct st_module st_module_OpenVG;
+
 #endif