mesa/st: add support for semaphore object create/import/delete v3

Add basic semaphore object operations.

v2: s/semaphore/fence for pipe objects
v3: added missing license headers

Signed-off-by: Andres Rodriguez <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>

5 files changed, 132 insertions, 0 deletions

diff --git a/src/mesa/Makefile.sources b/src/mesa/Makefile.sources
index a970deea185..880f379eb10 100644
--- a/src/mesa/Makefile.sources
+++ b/src/mesa/Makefile.sources
@@ -485,6 +485,8 @@ STATETRACKER_FILES = \
 	state_tracker/st_cb_rasterpos.h \
 	state_tracker/st_cb_readpixels.c \
 	state_tracker/st_cb_readpixels.h \
+	state_tracker/st_cb_semaphoreobjects.c \
+	state_tracker/st_cb_semaphoreobjects.h \
 	state_tracker/st_cb_strings.c \
 	state_tracker/st_cb_strings.h \
 	state_tracker/st_cb_syncobj.c \
diff --git a/src/mesa/meson.build b/src/mesa/meson.build
index 66bdc931a58..a74c39d29e9 100644
--- a/src/mesa/meson.build
+++ b/src/mesa/meson.build
@@ -535,6 +535,8 @@ files_libmesa_gallium = files(
   'state_tracker/st_cb_readpixels.h',
   'state_tracker/st_cb_strings.c',
   'state_tracker/st_cb_strings.h',
+  'state_tracker/st_cb_semaphoreobjects.c',
+  'state_tracker/st_cb_semaphoreobjects.h',
   'state_tracker/st_cb_syncobj.c',
   'state_tracker/st_cb_syncobj.h',
   'state_tracker/st_cb_texturebarrier.c',
diff --git a/src/mesa/state_tracker/st_cb_semaphoreobjects.c b/src/mesa/state_tracker/st_cb_semaphoreobjects.c
new file mode 100644
index 00000000000..0661e65eff8
--- /dev/null
+++ b/src/mesa/state_tracker/st_cb_semaphoreobjects.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright © 2017 Valve 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 "main/imports.h"
+#include "main/mtypes.h"
+
+#include "main/externalobjects.h"
+
+#include "st_context.h"
+#include "st_cb_semaphoreobjects.h"
+
+#include "state_tracker/drm_driver.h"
+#include "pipe/p_context.h"
+#include "pipe/p_screen.h"
+
+static struct gl_semaphore_object *
+st_semaphoreobj_alloc(struct gl_context *ctx, GLuint name)
+{
+   struct st_semaphore_object *st_obj = ST_CALLOC_STRUCT(st_semaphore_object);
+   if (!st_obj)
+      return NULL;
+
+   _mesa_initialize_semaphore_object(ctx, &st_obj->Base, name);
+   return &st_obj->Base;
+}
+
+static void
+st_semaphoreobj_free(struct gl_context *ctx,
+                     struct gl_semaphore_object *semObj)
+{
+   _mesa_delete_semaphore_object(ctx, semObj);
+}
+
+
+static void
+st_import_semaphoreobj_fd(struct gl_context *ctx,
+                       struct gl_semaphore_object *semObj,
+                       int fd)
+{
+   struct st_semaphore_object *st_obj = st_semaphore_object(semObj);
+   struct st_context *st = st_context(ctx);
+   struct pipe_context *pipe = st->pipe;
+
+   pipe->create_fence_fd(pipe, &st_obj->fence, fd, PIPE_FD_TYPE_SYNCOBJ);
+
+#if !defined(_WIN32)
+   /* We own fd, but we no longer need it. So get rid of it */
+   close(fd);
+#endif
+}
+
+void
+st_init_semaphoreobject_functions(struct dd_function_table *functions)
+{
+   functions->NewSemaphoreObject = st_semaphoreobj_alloc;
+   functions->DeleteSemaphoreObject = st_semaphoreobj_free;
+   functions->ImportSemaphoreFd = st_import_semaphoreobj_fd;
+}
diff --git a/src/mesa/state_tracker/st_cb_semaphoreobjects.h b/src/mesa/state_tracker/st_cb_semaphoreobjects.h
new file mode 100644
index 00000000000..6e87b82c803
--- /dev/null
+++ b/src/mesa/state_tracker/st_cb_semaphoreobjects.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright © 2017 Valve 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 ST_CB_SEMAPHOREOBJECTS_H
+#define ST_CB_SEMAPHOREOBJECTS_H
+
+#include "main/compiler.h"
+#include "main/mtypes.h"
+
+struct dd_function_table;
+struct pipe_screen;
+
+struct st_semaphore_object
+{
+   struct gl_semaphore_object Base;
+   struct pipe_fence_handle *fence;
+};
+
+static inline struct st_semaphore_object *
+st_semaphore_object(struct gl_semaphore_object *obj)
+{
+   return (struct st_semaphore_object *)obj;
+}
+
+extern void
+st_init_semaphoreobject_functions(struct dd_function_table *functions);
+
+#endif
diff --git a/src/mesa/state_tracker/st_context.c b/src/mesa/state_tracker/st_context.c
index 3b0dda68c35..8274b9e0a8b 100644
--- a/src/mesa/state_tracker/st_context.c
+++ b/src/mesa/state_tracker/st_context.c
@@ -60,6 +60,7 @@
 #include "st_cb_program.h"
 #include "st_cb_queryobj.h"
 #include "st_cb_readpixels.h"
+#include "st_cb_semaphoreobjects.h"
 #include "st_cb_texture.h"
 #include "st_cb_xformfb.h"
 #include "st_cb_flush.h"
@@ -734,6 +735,7 @@ st_init_driver_functions(struct pipe_screen *screen,
    st_init_query_functions(functions);
    st_init_cond_render_functions(functions);
    st_init_readpixels_functions(functions);
+   st_init_semaphoreobject_functions(functions);
    st_init_texture_functions(functions);
    st_init_texture_barrier_functions(functions);
    st_init_flush_functions(screen, functions);