libgl-gdi: Allow to pick softpipe/llvmpipe on runtime.

3 files changed, 64 insertions, 146 deletions

diff --git a/src/gallium/targets/libgl-gdi/SConscript b/src/gallium/targets/libgl-gdi/SConscript
index 339238756a..6fa0851a1a 100644
--- a/src/gallium/targets/libgl-gdi/SConscript
+++ b/src/gallium/targets/libgl-gdi/SConscript
@@ -18,16 +18,15 @@ env.Append(LIBS = [
     talloc,
 ])
 
-sources = []
+sources = ['libgl_gdi.c']
 drivers = []
 
 if True:
-    sources = ['gdi_softpipe_winsys.c']
-    drivers = [softpipe]
+    drivers += [softpipe]
 
 if env['llvm']:
-    sources = ['gdi_llvmpipe_winsys.c']
-    drivers = [llvmpipe]
+    env.Append(CPPDEFINES = 'HAVE_LLVMPIPE')
+    drivers += [llvmpipe]
 
 if env['gcc']:
     sources += ['#src/gallium/state_trackers/wgl/opengl32.mingw.def']
diff --git a/src/gallium/targets/libgl-gdi/gdi_softpipe_winsys.c b/src/gallium/targets/libgl-gdi/gdi_softpipe_winsys.c
deleted file mode 100644
index 4ac507ff9c..0000000000
--- a/src/gallium/targets/libgl-gdi/gdi_softpipe_winsys.c
+++ /dev/null
@@ -1,124 +0,0 @@
-/**************************************************************************
- *
- * Copyright 2009 VMware, Inc.
- * 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.
- *
- *
- **************************************************************************/
-
-/**
- * @file
- * LLVMpipe support.
- *
- * @author Jose Fonseca <jfonseca@vmware.com>
- */
-
-
-#include <windows.h>
-
-#include "stw_winsys.h"
-#include "gdi/gdi_sw_winsys.h"
-#include "softpipe/sp_texture.h"
-#include "softpipe/sp_screen.h"
-#include "softpipe/sp_public.h"
-
-
-static struct pipe_screen *
-gdi_softpipe_screen_create(void)
-{
-   static struct sw_winsys *winsys;
-   struct pipe_screen *screen;
-
-   winsys = gdi_create_sw_winsys();
-   if(!winsys)
-      goto no_winsys;
-
-   screen = softpipe_create_screen(winsys);
-   if(!screen)
-      goto no_screen;
-
-   return screen;
-   
-no_screen:
-   winsys->destroy(winsys);
-no_winsys:
-   return NULL;
-}
-
-
-
-
-static void
-gdi_softpipe_present(struct pipe_screen *screen,
-                     struct pipe_surface *surface,
-                     HDC hDC)
-{
-   /* This will fail if any interposing layer (trace, debug, etc) has
-    * been introduced between the state-trackers and softpipe.
-    *
-    * Ideally this would get replaced with a call to
-    * pipe_screen::flush_frontbuffer().
-    *
-    * Failing that, it may be necessary for intervening layers to wrap
-    * other structs such as this stw_winsys as well...
-    */
-   gdi_sw_display(softpipe_screen(screen)->winsys,
-                  softpipe_resource(surface->texture)->dt,
-                  hDC);
-}
-
-
-static const struct stw_winsys stw_winsys = {
-   &gdi_softpipe_screen_create,
-   &gdi_softpipe_present,
-   NULL, /* get_adapter_luid */
-   NULL, /* shared_surface_open */
-   NULL, /* shared_surface_close */
-   NULL  /* compose */
-};
-
-
-BOOL WINAPI
-DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpReserved)
-{
-   switch (fdwReason) {
-   case DLL_PROCESS_ATTACH:
-      stw_init(&stw_winsys);
-      stw_init_thread();
-      break;
-
-   case DLL_THREAD_ATTACH:
-      stw_init_thread();
-      break;
-
-   case DLL_THREAD_DETACH:
-      stw_cleanup_thread();
-      break;
-
-   case DLL_PROCESS_DETACH:
-      stw_cleanup_thread();
-      stw_cleanup();
-      break;
-   }
-   return TRUE;
-}
diff --git a/src/gallium/targets/libgl-gdi/gdi_llvmpipe_winsys.c b/src/gallium/targets/libgl-gdi/libgl_gdi.c
index 58c941a03b..1d6e664eab 100644
--- a/src/gallium/targets/libgl-gdi/gdi_llvmpipe_winsys.c
+++ b/src/gallium/targets/libgl-gdi/libgl_gdi.c
@@ -1,6 +1,6 @@
 /**************************************************************************
  *
- * Copyright 2009 VMware, Inc.
+ * Copyright 2009-2010 VMware, Inc.
  * All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
@@ -28,7 +28,7 @@
 
 /**
  * @file
- * LLVMpipe support.
+ * Softpipe/LLVMpipe support.
  *
  * @author Jose Fonseca <jfonseca@vmware.com>
  */
@@ -36,24 +36,56 @@
 
 #include <windows.h>
 
+#include "util/u_debug.h"
 #include "stw_winsys.h"
 #include "gdi/gdi_sw_winsys.h"
+
+#include "softpipe/sp_texture.h"
+#include "softpipe/sp_screen.h"
+#include "softpipe/sp_public.h"
+
+#ifdef HAVE_LLVMPIPE
 #include "llvmpipe/lp_texture.h"
 #include "llvmpipe/lp_screen.h"
 #include "llvmpipe/lp_public.h"
+#endif
+
+
+static boolean use_llvmpipe = FALSE;
 
 
 static struct pipe_screen *
-gdi_llvmpipe_screen_create(void)
+gdi_screen_create(void)
 {
-   static struct sw_winsys *winsys;
-   struct pipe_screen *screen;
+   const char *default_driver;
+   const char *driver;
+   struct pipe_screen *screen = NULL;
+   struct sw_winsys *winsys;
 
    winsys = gdi_create_sw_winsys();
    if(!winsys)
       goto no_winsys;
 
-   screen = llvmpipe_create_screen(winsys);
+#ifdef HAVE_LLVMPIPE
+   default_driver = "llvmpipe";
+#else
+   default_driver = "softpipe";
+#endif
+
+   driver = debug_get_option("GALLIUM_DRIVER", default_driver);
+
+#ifdef HAVE_LLVMPIPE
+   if (strcmp(driver, "llvmpipe") == 0) {
+      screen = llvmpipe_create_screen( winsys );
+   }
+#endif
+
+   if (screen == NULL) {
+      screen = softpipe_create_screen( winsys );
+   } else {
+      use_llvmpipe = TRUE;
+   }
+
    if(!screen)
       goto no_screen;
 
@@ -66,15 +98,13 @@ no_winsys:
 }
 
 
-
-
 static void
-gdi_llvmpipe_present(struct pipe_screen *screen,
-                     struct pipe_surface *surface,
-                     HDC hDC)
+gdi_present(struct pipe_screen *screen,
+            struct pipe_surface *surface,
+            HDC hDC)
 {
    /* This will fail if any interposing layer (trace, debug, etc) has
-    * been introduced between the state-trackers and llvmpipe.
+    * been introduced between the state-trackers and the pipe driver.
     *
     * Ideally this would get replaced with a call to
     * pipe_screen::flush_frontbuffer().
@@ -82,15 +112,28 @@ gdi_llvmpipe_present(struct pipe_screen *screen,
     * Failing that, it may be necessary for intervening layers to wrap
     * other structs such as this stw_winsys as well...
     */
-   gdi_sw_display(llvmpipe_screen(screen)->winsys,
-                  llvmpipe_resource(surface->texture)->dt,
-                  hDC);
+
+   struct sw_winsys *winsys = NULL;
+   struct sw_displaytarget *dt = NULL;
+
+#ifdef HAVE_LLVMPIPE
+   if (use_llvmpipe) {
+      winsys = llvmpipe_screen(screen)->winsys;
+      dt = llvmpipe_resource(surface->texture)->dt;
+      gdi_sw_display(winsys, dt, hDC);
+      return;
+   }
+#endif
+
+   winsys = softpipe_screen(screen)->winsys,
+   dt = softpipe_resource(surface->texture)->dt,
+   gdi_sw_display(winsys, dt, hDC);
 }
 
 
 static const struct stw_winsys stw_winsys = {
-   &gdi_llvmpipe_screen_create,
-   &gdi_llvmpipe_present,
+   &gdi_screen_create,
+   &gdi_present,
    NULL, /* get_adapter_luid */
    NULL, /* shared_surface_open */
    NULL, /* shared_surface_close */