use structure containment to derive xmesa_context from GLcontext

1 files changed, 11 insertions, 2 deletions

diff --git a/src/mesa/drivers/x11/xmesaP.h b/src/mesa/drivers/x11/xmesaP.h
index 46886eb9c61..5024e527c29 100644
--- a/src/mesa/drivers/x11/xmesaP.h
+++ b/src/mesa/drivers/x11/xmesaP.h
@@ -1,4 +1,4 @@
-/* $Id: xmesaP.h,v 1.35 2003/02/25 19:26:30 brianp Exp $ */
+/* $Id: xmesaP.h,v 1.36 2003/04/01 17:28:12 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -137,7 +137,7 @@ struct xmesa_visual {
  * "Derived" from __GLcontextRec.  Basically corresponds to a GLXContext.
  */
 struct xmesa_context {
-   GLcontext *gl_ctx;		/* the core library context */
+   GLcontext mesa;		/* the core library context (containment) */
    XMesaVisual xm_visual;	/* Describes the buffers */
    XMesaBuffer xm_draw_buffer;	/* current draw framebuffer */
    XMesaBuffer xm_read_buffer;	/* current read framebuffer */
@@ -494,6 +494,15 @@ static int const kernel1[16] = {
 
 
 
+
+/*
+ * Return pointer to XMesaContext corresponding to a Mesa GLcontext.
+ * Since we're using structure containment, it's just a cast!.
+ */
+#define XMESA_CONTEXT(MESACTX)  (XMesaContext) (MESACTX)
+
+
+
 /*
  * External functions:
  */