1 files changed, 65 insertions, 5 deletions
diff --git a/src/egl/main/eglcontext.h b/src/egl/main/eglcontext.h
index 45c7b4717b..be00642d13 100644
--- a/src/egl/main/eglcontext.h
+++ b/src/egl/main/eglcontext.h
@@ -4,6 +4,7 @@
 
 
 #include "egltypedefs.h"
+#include "egldisplay.h"
 
 
 /**
@@ -11,9 +12,8 @@
  */
 struct _egl_context
 {
-   /* Managed by EGLDisplay for linking */
-   _EGLDisplay *Display;
-   _EGLContext *Next;
+   /* A context is a display resource */
+   _EGLResource Resource;
 
    /* The bound status of the context */
    _EGLThreadInfo *Binding;
@@ -30,7 +30,7 @@ struct _egl_context
 };
 
 
-extern EGLBoolean
+PUBLIC EGLBoolean
 _eglInitContext(_EGLDriver *drv, _EGLContext *ctx,
                 _EGLConfig *config, const EGLint *attrib_list);
 
@@ -47,7 +47,7 @@ extern EGLBoolean
 _eglQueryContext(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx, EGLint attribute, EGLint *value);
 
 
-extern EGLBoolean
+PUBLIC EGLBoolean
 _eglMakeCurrent(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *draw, _EGLSurface *read, _EGLContext *ctx);
 
 
@@ -65,4 +65,64 @@ _eglIsContextBound(_EGLContext *ctx)
 }
 
 
+/**
+ * Link a context to a display and return the handle of the link.
+ * The handle can be passed to client directly.
+ */
+static INLINE EGLContext
+_eglLinkContext(_EGLContext *ctx, _EGLDisplay *dpy)
+{
+   _eglLinkResource(&ctx->Resource, _EGL_RESOURCE_CONTEXT, dpy);
+   return (EGLContext) ctx;
+}
+
+
+/**
+ * Unlink a linked context from its display.
+ * Accessing an unlinked context should generate EGL_BAD_CONTEXT error.
+ */
+static INLINE void
+_eglUnlinkContext(_EGLContext *ctx)
+{
+   _eglUnlinkResource(&ctx->Resource, _EGL_RESOURCE_CONTEXT);
+}
+
+
+/**
+ * Lookup a handle to find the linked context.
+ * Return NULL if the handle has no corresponding linked context.
+ */
+static INLINE _EGLContext *
+_eglLookupContext(EGLContext context, _EGLDisplay *dpy)
+{
+   _EGLContext *ctx = (_EGLContext *) context;
+   if (!dpy || !_eglCheckResource((void *) ctx, _EGL_RESOURCE_CONTEXT, dpy))
+      ctx = NULL;
+   return ctx;
+}
+
+
+/**
+ * Return the handle of a linked context, or EGL_NO_CONTEXT.
+ */
+static INLINE EGLContext
+_eglGetContextHandle(_EGLContext *ctx)
+{
+   _EGLResource *res = (_EGLResource *) ctx;
+   return (res && _eglIsResourceLinked(res)) ?
+      (EGLContext) ctx : EGL_NO_CONTEXT;
+}
+
+
+/**
+ * Return true if the context is linked to a display.
+ */
+static INLINE EGLBoolean
+_eglIsContextLinked(_EGLContext *ctx)
+{
+   _EGLResource *res = (_EGLResource *) ctx;
+   return (res && _eglIsResourceLinked(res));
+}
+
+
 #endif /* EGLCONTEXT_INCLUDED */