d3d12: Add D3D12 WGL winsys

Add a winsys for code paths common to the libgl-gdi and
libgl-d3d12 targets when using the D3D12 gallium driver.

Signed-off-by: Louis-Francis Ratté-Boulianne <lfrb@collabora.com>
Reviewed-by: Charmaine Lee <charmainel@vmware.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7535>

3 files changed, 132 insertions, 0 deletions

diff --git a/src/gallium/winsys/d3d12/wgl/d3d12_wgl_public.h b/src/gallium/winsys/d3d12/wgl/d3d12_wgl_public.h
new file mode 100644
index 00000000000..8a9d1f666cd
--- /dev/null
+++ b/src/gallium/winsys/d3d12/wgl/d3d12_wgl_public.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright © Microsoft Corporation
+ *
+ * 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.
+ */
+
+#ifndef D3D12_WGL_PUBLIC_H
+#define D3D12_WGL_PUBLIC_H
+
+#include <windows.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct pipe_resource;
+struct pipe_screen;
+struct stw_winsys;
+
+struct pipe_screen *
+d3d12_wgl_create_screen(struct sw_winsys *winsys,
+                        HDC hDC);
+
+void
+d3d12_wgl_present(struct pipe_screen *screen,
+                  struct pipe_resource *res,
+                  HDC hDC);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/gallium/winsys/d3d12/wgl/d3d12_wgl_winsys.c b/src/gallium/winsys/d3d12/wgl/d3d12_wgl_winsys.c
new file mode 100644
index 00000000000..6981381175e
--- /dev/null
+++ b/src/gallium/winsys/d3d12/wgl/d3d12_wgl_winsys.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright © Microsoft Corporation
+ *
+ * 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 "d3d12_wgl_public.h"
+#include "d3d12/d3d12_public.h"
+
+#include "stw_device.h"
+#include "stw_winsys.h"
+
+#include "pipe/p_screen.h"
+#include "util/u_memory.h"
+
+struct pipe_screen *
+d3d12_wgl_create_screen(struct sw_winsys *winsys, HDC hDC)
+{
+   LUID *adapter_luid = NULL, local_luid;
+   if (stw_dev && stw_dev->callbacks.pfnGetAdapterLuid) {
+      stw_dev->callbacks.pfnGetAdapterLuid(hDC, &local_luid);
+      adapter_luid = &local_luid;
+   }
+   return d3d12_create_screen(winsys, adapter_luid);
+}
+
+void
+d3d12_wgl_present(struct pipe_screen *screen,
+                  struct pipe_resource *res,
+                  HDC hDC)
+{
+   screen->flush_frontbuffer(screen, res, 0, 0, hDC, NULL);
+}
diff --git a/src/gallium/winsys/d3d12/wgl/meson.build b/src/gallium/winsys/d3d12/wgl/meson.build
new file mode 100644
index 00000000000..9f41560b811
--- /dev/null
+++ b/src/gallium/winsys/d3d12/wgl/meson.build
@@ -0,0 +1,32 @@
+# Copyright © Microsoft Corporation
+
+# 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.
+
+
+libd3d12winsys = static_library(
+  'd3d12winsys',
+  files('d3d12_wgl_winsys.c'),
+  include_directories : [inc_src, inc_wgl, inc_include, inc_gallium, inc_gallium_aux, inc_gallium_drivers],
+  gnu_symbol_visibility : 'hidden',
+)
+
+winsys_d3d12_wgl = declare_dependency(
+  link_with : [libd3d12winsys],
+)