target-helpers: remove swrast_xlib.c helper

This was a good idea, but ended up tying the build systems in knots.
We can revisit this later, in particular if we can put in place dummy
implementations of cell_create_screen(), llvmpipe_create_screen()
which just return NULL if the driver isn't available.

In the meantime, just duplicate this smallish function in the two
places it was being called.

5 files changed, 121 insertions, 115 deletions

diff --git a/src/gallium/auxiliary/Makefile b/src/gallium/auxiliary/Makefile
index 89b15d41b7b..0ac18426d97 100644
--- a/src/gallium/auxiliary/Makefile
+++ b/src/gallium/auxiliary/Makefile
@@ -132,7 +132,6 @@ C_SOURCES = \
 	vl/vl_compositor.c \
 	vl/vl_csc.c \
 	vl/vl_shader_build.c \
-	target-helpers/swrast_xlib.c
 	target-helpers/wrap_screen.c
 
 GALLIVM_SOURCES = \
diff --git a/src/gallium/auxiliary/target-helpers/swrast_xlib.c b/src/gallium/auxiliary/target-helpers/swrast_xlib.c
deleted file mode 100644
index 3cab9012728..00000000000
--- a/src/gallium/auxiliary/target-helpers/swrast_xlib.c
+++ /dev/null
@@ -1,97 +0,0 @@
-/**************************************************************************
- * 
- * Copyright 2007 Tungsten Graphics, Inc., Bismarck, ND., USA
- * All Rights Reserved.
- * 
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- * 
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 
- * USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- * 
- * 
- **************************************************************************/
-
-/*
- * Authors:
- *   Keith Whitwell
- */
-
-#include "swrast_xlib.h"
-
-#include "state_tracker/xlib_sw_winsys.h"
-#include "util/u_debug.h"
-#include "softpipe/sp_public.h"
-#include "llvmpipe/lp_public.h"
-#include "cell/ppu/cell_public.h"
-#include "wrap_screen.h"
-
-
-/* Helper function to build a subset of a driver stack consisting of
- * one of the software rasterizers (cell, llvmpipe, softpipe) and the
- * xlib winsys.
- *
- * This can be called by any target that builds on top of this
- * combination.
- */
-struct pipe_screen *
-swrast_xlib_create_screen( Display *display )
-{
-   struct sw_winsys *winsys;
-   struct pipe_screen *screen = NULL;
-
-   /* Create the underlying winsys, which performs presents to Xlib
-    * drawables:
-    */
-   winsys = xlib_create_sw_winsys( display );
-   if (winsys == NULL)
-      return NULL;
-
-   /* Create a software rasterizer on top of that winsys:
-    */
-#if defined(GALLIUM_CELL)
-   if (screen == NULL &&
-       !debug_get_bool_option("GALLIUM_NO_CELL", FALSE))
-      screen = cell_create_screen( winsys );
-#endif
-
-#if defined(GALLIUM_LLVMPIPE)
-   if (screen == NULL &&
-       !debug_get_bool_option("GALLIUM_NO_LLVM", FALSE))
-      screen = llvmpipe_create_screen( winsys );
-#endif
-
-   if (screen == NULL)
-      screen = softpipe_create_screen( winsys );
-
-   if (screen == NULL)
-      goto fail;
-
-   /* Inject any wrapping layers we want to here:
-    */
-   return gallium_wrap_screen( screen );
-
-fail:
-   if (winsys)
-      winsys->destroy( winsys );
-
-   return NULL;
-}
-
-
-
-
diff --git a/src/gallium/auxiliary/target-helpers/swrast_xlib.h b/src/gallium/auxiliary/target-helpers/swrast_xlib.h
deleted file mode 100644
index 3a0f713d54e..00000000000
--- a/src/gallium/auxiliary/target-helpers/swrast_xlib.h
+++ /dev/null
@@ -1,15 +0,0 @@
-#ifndef SWRAST_XLIB_HELPER_H
-#define SWRAST_XLIB_HELPER_H
-
-#include <X11/Xlib.h>
-#include "pipe/p_compiler.h"
-
-/* Helper to build the xlib winsys, choose between the software
- * rasterizers and construct the lower part of a driver stack.
- *
- * Just add a state tracker.
- */
-struct pipe_screen *swrast_xlib_create_screen( Display *display );
-
-
-#endif
diff --git a/src/gallium/state_trackers/egl/x11/native_ximage.c b/src/gallium/state_trackers/egl/x11/native_ximage.c
index 544b3b4276e..e0d12acabe8 100644
--- a/src/gallium/state_trackers/egl/x11/native_ximage.c
+++ b/src/gallium/state_trackers/egl/x11/native_ximage.c
@@ -34,7 +34,11 @@
 #include "pipe/p_compiler.h"
 #include "util/u_inlines.h"
 #include "state_tracker/xlib_sw_winsys.h"
-#include "target-helpers/swrast_xlib.h"
+#include "target-helpers/wrap_screen.h"
+#include "util/u_debug.h"
+#include "softpipe/sp_public.h"
+#include "llvmpipe/lp_public.h"
+#include "cell/ppu/cell_public.h"
 #include "egllog.h"
 
 #include "native_x11.h"
@@ -614,6 +618,60 @@ ximage_display_destroy(struct native_display *ndpy)
    free(xdpy);
 }
 
+
+/* Helper function to build a subset of a driver stack consisting of
+ * one of the software rasterizers (cell, llvmpipe, softpipe) and the
+ * xlib winsys.
+ *
+ * This function could be shared, but currently causes headaches for
+ * the build systems, particularly scons if we try.
+ *
+ * Long term, want to avoid having global #defines for things like
+ * GALLIUM_LLVMPIPE, GALLIUM_CELL, etc.  Scons already eliminates
+ * those #defines, so things that are painful for it now are likely to
+ * be painful for other build systems in the future.
+ */
+static struct pipe_screen *
+swrast_xlib_create_screen( Display *display )
+{
+   struct sw_winsys *winsys;
+   struct pipe_screen *screen = NULL;
+
+   /* Create the underlying winsys, which performs presents to Xlib
+    * drawables:
+    */
+   winsys = xlib_create_sw_winsys( display );
+   if (winsys == NULL)
+      return NULL;
+
+   /* Create a software rasterizer on top of that winsys.  Use
+    * llvmpipe if it is available.
+    */
+#if defined(GALLIUM_LLVMPIPE)
+   if (screen == NULL &&
+       !debug_get_bool_option("GALLIUM_NO_LLVM", FALSE))
+      screen = llvmpipe_create_screen( winsys );
+#endif
+
+   if (screen == NULL)
+      screen = softpipe_create_screen( winsys );
+
+   if (screen == NULL)
+      goto fail;
+
+   /* Inject any wrapping layers we want to here:
+    */
+   return gallium_wrap_screen( screen );
+
+fail:
+   if (winsys)
+      winsys->destroy( winsys );
+
+   return NULL;
+}
+
+
+
 struct native_display *
 x11_create_ximage_display(EGLNativeDisplayType dpy,
                           struct native_event_handler *event_handler)
diff --git a/src/gallium/targets/libgl-xlib/xlib.c b/src/gallium/targets/libgl-xlib/xlib.c
index 54764440e70..05dc8db57d9 100644
--- a/src/gallium/targets/libgl-xlib/xlib.c
+++ b/src/gallium/targets/libgl-xlib/xlib.c
@@ -31,12 +31,73 @@
  *   Keith Whitwell
  */
 #include "pipe/p_compiler.h"
-#include "target-helpers/swrast_xlib.h"
+#include "state_tracker/xlib_sw_winsys.h"
+#include "util/u_debug.h"
+#include "softpipe/sp_public.h"
+#include "llvmpipe/lp_public.h"
+#include "cell/ppu/cell_public.h"
+#include "target-helpers/wrap_screen.h"
 #include "xm_public.h"
 
 /* advertise OpenGL support */
 PUBLIC const int st_api_OpenGL = 1;
 
+
+/* Helper function to build a subset of a driver stack consisting of
+ * one of the software rasterizers (cell, llvmpipe, softpipe) and the
+ * xlib winsys.
+ *
+ * This function could be shared, but currently causes headaches for
+ * the build systems, particularly scons if we try.  Long term, want
+ * to avoid having global #defines for things like GALLIUM_LLVMPIPE,
+ * GALLIUM_CELL, etc.  Scons already eliminates those #defines, so
+ * things that are painful for it now are likely to be painful for
+ * other build systems in the future.
+ */
+static struct pipe_screen *
+swrast_xlib_create_screen( Display *display )
+{
+   struct sw_winsys *winsys;
+   struct pipe_screen *screen = NULL;
+
+   /* Create the underlying winsys, which performs presents to Xlib
+    * drawables:
+    */
+   winsys = xlib_create_sw_winsys( display );
+   if (winsys == NULL)
+      return NULL;
+
+   /* Create a software rasterizer on top of that winsys:
+    */
+#if defined(GALLIUM_CELL)
+   if (screen == NULL &&
+       !debug_get_bool_option("GALLIUM_NO_CELL", FALSE))
+      screen = cell_create_screen( winsys );
+#endif
+
+#if defined(GALLIUM_LLVMPIPE)
+   if (screen == NULL &&
+       !debug_get_bool_option("GALLIUM_NO_LLVM", FALSE))
+      screen = llvmpipe_create_screen( winsys );
+#endif
+
+   if (screen == NULL)
+      screen = softpipe_create_screen( winsys );
+
+   if (screen == NULL)
+      goto fail;
+
+   /* Inject any wrapping layers we want to here:
+    */
+   return gallium_wrap_screen( screen );
+
+fail:
+   if (winsys)
+      winsys->destroy( winsys );
+
+   return NULL;
+}
+
 struct xm_driver xlib_driver = 
 {
    .create_pipe_screen = swrast_xlib_create_screen,