gallium: add soft screen helper

2 files changed, 85 insertions, 0 deletions

diff --git a/src/gallium/auxiliary/target-helpers/soft_screen.c b/src/gallium/auxiliary/target-helpers/soft_screen.c
new file mode 100644
index 0000000000..00d386ee1d
--- /dev/null
+++ b/src/gallium/auxiliary/target-helpers/soft_screen.c
@@ -0,0 +1,73 @@
+/**************************************************************************
+ *
+ * Copyright 2010 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.
+ *
+ *
+ **************************************************************************/
+
+#include "target-helpers/soft_screen.h"
+#include "softpipe/sp_public.h"
+#include "llvmpipe/lp_public.h"
+#include "cell/ppu/cell_public.h"
+#include "util/u_debug.h"
+
+/**
+ * Choose and create a software renderer screen.
+ */
+struct pipe_screen *
+gallium_soft_create_screen( struct sw_winsys *winsys )
+{
+   const char *default_driver = NULL;
+   const char *driver = NULL;
+   struct pipe_screen *screen = NULL;
+
+#if defined(GALLIUM_CELL)
+   default_driver = "cell";
+#elif defined(GALLIUM_LLVMPIPE)
+   default_driver = "llvmpipe";
+#elif defined(GALLIUM_SOFTPIPE)
+   default_driver = "softpipe";
+#else
+   default_driver = "";
+#endif
+
+   driver = debug_get_option("GALLIUM_DRIVER", default_driver);
+
+#if defined(GALLIUM_CELL)
+   if (screen == NULL && strcmp(driver, "cell") == 0)
+      screen = cell_create_screen( winsys );
+#endif
+
+#if defined(GALLIUM_LLVMPIPE)
+   if (screen == NULL && strcmp(driver, "llvmpipe") == 0)
+      screen = llvmpipe_create_screen( winsys );
+#endif
+
+#if defined(GALLIUM_SOFTPIPE)
+   if (screen == NULL)
+      screen = softpipe_create_screen( winsys );
+#endif
+
+   return screen;
+}
diff --git a/src/gallium/auxiliary/target-helpers/soft_screen.h b/src/gallium/auxiliary/target-helpers/soft_screen.h
new file mode 100644
index 0000000000..5c1012644a
--- /dev/null
+++ b/src/gallium/auxiliary/target-helpers/soft_screen.h
@@ -0,0 +1,12 @@
+#ifndef SOFT_SCREEN_HELPER_H
+#define SOFT_SCREEN_HELPER_H
+
+#include "pipe/p_compiler.h"
+
+struct pipe_screen;
+struct sw_winsys;
+
+struct pipe_screen *
+gallium_soft_create_screen( struct sw_winsys *winsys );
+
+#endif