src/mesa/state_tracker/st_cb_memoryobjects.c

   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
  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 "frontend/drm_driver.h"
  35 #include "pipe/p_context.h"
  36 #include "pipe/p_screen.h"
  37
  38 #ifdef HAVE_LIBDRM
  39 #include "drm-uapi/drm_fourcc.h"
  40 #endif
  41
  42 static struct gl_memory_object *
  43 st_memoryobj_alloc(struct gl_context *ctx, GLuint name)
  44 {
  45    struct st_memory_object *st_obj = ST_CALLOC_STRUCT(st_memory_object);
  46    if (!st_obj)
  47       return NULL;
  48
  49    _mesa_initialize_memory_object(ctx, &st_obj->Base, name);
  50    return &st_obj->Base;
  51 }
  52
  53 static void
  54 st_memoryobj_free(struct gl_context *ctx,
  55                   struct gl_memory_object *obj)
  56 {
  57    _mesa_delete_memory_object(ctx, obj);
  58 }
  59
  60
  61 static void
  62 st_import_memoryobj_fd(struct gl_context *ctx,
  63                        struct gl_memory_object *obj,
  64                        GLuint64 size,
  65                        int fd)
  66 {
  67    struct st_memory_object *st_obj = st_memory_object(obj);
  68    struct st_context *st = st_context(ctx);
  69    struct pipe_context *pipe = st->pipe;
  70    struct pipe_screen *screen = pipe->screen;
  71    struct winsys_handle whandle = {
  72       .type = WINSYS_HANDLE_TYPE_FD,
  73       .handle = fd,
  74 #ifdef HAVE_LIBDRM
  75       .modifier = DRM_FORMAT_MOD_INVALID,
  76 #endif
  77    };
  78
  79    st_obj->memory = screen->memobj_create_from_handle(screen,
  80                                                       &whandle,
  81                                                       obj->Dedicated);
  82
  83 #if !defined(_WIN32)
  84    /* We own fd, but we no longer need it. So get rid of it */
  85    close(fd);
  86 #endif
  87 }
  88
  89 void
  90 st_init_memoryobject_functions(struct dd_function_table *functions)
  91 {
  92    functions->NewMemoryObject = st_memoryobj_alloc;
  93    functions->DeleteMemoryObject = st_memoryobj_free;
  94    functions->ImportMemoryObjectFd = st_import_memoryobj_fd;
  95 }