gallium/swr: add OpenSWR driver

OpenSWR is a new software rasterizer for x86 processors designed
for high performance and high scalablility on visualization workloads.

Acked-by: Roland Scheidegger <[email protected]>
Acked-by: Jose Fonseca <[email protected]>

1 files changed, 67 insertions, 0 deletions

diff --git a/src/gallium/drivers/swr/swr_loader.cpp b/src/gallium/drivers/swr/swr_loader.cpp
new file mode 100644
index 00000000000..2113c371c5f
--- /dev/null
+++ b/src/gallium/drivers/swr/swr_loader.cpp
@@ -0,0 +1,67 @@
+/****************************************************************************
+ * Copyright (C) 2016 Intel Corporation.   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, sublicense,
+ * 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 above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ ***************************************************************************/
+
+#include "util/u_cpu_detect.h"
+#include "util/u_dl.h"
+#include "swr_public.h"
+
+#include <stdio.h>
+#include <dlfcn.h>
+
+typedef pipe_screen *(*screen_create_proc)(struct sw_winsys *winsys);
+
+struct pipe_screen *
+swr_create_screen(struct sw_winsys *winsys)
+{
+   fprintf(stderr, "SWR detected ");
+
+   util_dl_library *pLibrary = nullptr;
+
+   util_cpu_detect();
+   if (util_cpu_caps.has_avx2) {
+      fprintf(stderr, "AVX2\n");
+      pLibrary = util_dl_open("libswrAVX2.so");
+   } else if (util_cpu_caps.has_avx) {
+      fprintf(stderr, "AVX\n");
+      pLibrary = util_dl_open("libswrAVX.so");
+   } else {
+      fprintf(stderr, "no AVX/AVX2 support.  Aborting!\n");
+      exit(-1);
+   }
+
+   if (!pLibrary) {
+      fprintf(stderr, "SWR library load failure: %s\n", util_dl_error());
+      exit(-1);
+   }
+
+   util_dl_proc pScreenProc = util_dl_get_proc_address(pLibrary, "swr_create_screen");
+
+   if (!pScreenProc) {
+      fprintf(stderr, "SWR library search failure: %s\n", util_dl_error());
+      exit(-1);
+   }
+
+   screen_create_proc pScreenCreate = (screen_create_proc)pScreenProc;
+
+   return pScreenCreate(winsys);
+}