ws/xlib: remove self-knowledge about users of xlib winsys

Several software rasterizers can make use of this winsys, but there
isn't any reason why the winsys itself should know about them.

This change moves that information into the libgl-xlib target.

Need to fix up other targets making use of this winsys.

3 files changed, 11 insertions, 8 deletions

diff --git a/src/gallium/drivers/softpipe/sp_public.h b/src/gallium/drivers/softpipe/sp_public.h
new file mode 100644
index 0000000000..62d0903d87
--- /dev/null
+++ b/src/gallium/drivers/softpipe/sp_public.h
@@ -0,0 +1,10 @@
+#ifndef SP_PUBLIC_H
+#define SP_PUBLIC_H
+
+struct pipe_screen;
+struct sw_winsys;
+
+struct pipe_screen *
+softpipe_create_screen(struct sw_winsys *winsys);
+
+#endif
diff --git a/src/gallium/drivers/softpipe/sp_screen.c b/src/gallium/drivers/softpipe/sp_screen.c
index 44680ea70c..e0a2ef604e 100644
--- a/src/gallium/drivers/softpipe/sp_screen.c
+++ b/src/gallium/drivers/softpipe/sp_screen.c
@@ -36,6 +36,7 @@
 #include "sp_screen.h"
 #include "sp_context.h"
 #include "sp_buffer.h"
+#include "sp_public.h"
 
 
 static const char *
diff --git a/src/gallium/drivers/softpipe/sp_screen.h b/src/gallium/drivers/softpipe/sp_screen.h
index 4d7d8bada2..f741454c9e 100644
--- a/src/gallium/drivers/softpipe/sp_screen.h
+++ b/src/gallium/drivers/softpipe/sp_screen.h
@@ -59,12 +59,4 @@ softpipe_screen( struct pipe_screen *pipe )
 
 
 
-/**
- * Create a softpipe screen that uses the
- * given winsys for allocating buffers.
- */
-struct pipe_screen *softpipe_create_screen( struct sw_winsys * );
-
-
-
 #endif /* SP_SCREEN_H */