1/*
2 * Copyright © 2017 Red Hat.
3 * Copyright © 2017 Valve Corporation.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 */
24
25#include "main/imports.h"
26#include "main/mtypes.h"
27
28#include "main/externalobjects.h"
29
30#include "st_context.h"
31#include "st_cb_memoryobjects.h"
32#include "st_util.h"
33
34#include "state_tracker/drm_driver.h"
35#include "pipe/p_context.h"
36#include "pipe/p_screen.h"
37
38static struct gl_memory_object *
39st_memoryobj_alloc(struct gl_context *ctx, GLuint name)
40{
41   struct st_memory_object *st_obj = ST_CALLOC_STRUCT(st_memory_object);
42   if (!st_obj)
43      return NULL;
44
45   _mesa_initialize_memory_object(ctx, &st_obj->Base, name);
46   return &st_obj->Base;
47}
48
49static void
50st_memoryobj_free(struct gl_context *ctx,
51                  struct gl_memory_object *obj)
52{
53   _mesa_delete_memory_object(ctx, obj);
54}
55
56
57static void
58st_import_memoryobj_fd(struct gl_context *ctx,
59                       struct gl_memory_object *obj,
60                       GLuint64 size,
61                       int fd)
62{
63   struct st_memory_object *st_obj = st_memory_object(obj);
64   struct st_context *st = st_context(ctx);
65   struct pipe_context *pipe = st->pipe;
66   struct pipe_screen *screen = pipe->screen;
67   struct winsys_handle whandle;
68
69   whandle.type = WINSYS_HANDLE_TYPE_FD;
70   whandle.handle = fd;
71   whandle.offset = 0;
72   whandle.layer = 0;
73   whandle.stride = 0;
74
75   st_obj->memory = screen->memobj_create_from_handle(screen,
76                                                      &whandle,
77                                                      obj->Dedicated);
78
79#if !defined(_WIN32)
80   /* We own fd, but we no longer need it. So get rid of it */
81   close(fd);
82#endif
83}
84
85void
86st_init_memoryobject_functions(struct dd_function_table *functions)
87{
88   functions->NewMemoryObject = st_memoryobj_alloc;
89   functions->DeleteMemoryObject = st_memoryobj_free;
90   functions->ImportMemoryObjectFd = st_import_memoryobj_fd;
91}
92