src/gallium/drivers/identity/id_objects.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "util/u_inlines.h"
  29 #include "util/u_memory.h"
  30
  31 #include "id_screen.h"
  32 #include "id_objects.h"
  33 #include "id_context.h"
  34
  35
  36
  37 struct pipe_resource *
  38 identity_resource_create(struct identity_screen *id_screen,
  39                         struct pipe_resource *resource)
  40 {
  41    struct identity_resource *id_resource;
  42
  43    if(!resource)
  44       goto error;
  45
  46    assert(resource->screen == id_screen->screen);
  47
  48    id_resource = CALLOC_STRUCT(identity_resource);
  49    if(!id_resource)
  50       goto error;
  51
  52    memcpy(&id_resource->base, resource, sizeof(struct pipe_resource));
  53
  54    pipe_reference_init(&id_resource->base.reference, 1);
  55    id_resource->base.screen = &id_screen->base;
  56    id_resource->resource = resource;
  57
  58    return &id_resource->base;
  59
  60 error:
  61    pipe_resource_reference(&resource, NULL);
  62    return NULL;
  63 }
  64
  65 void
  66 identity_resource_destroy(struct identity_resource *id_resource)
  67 {
  68    pipe_resource_reference(&id_resource->resource, NULL);
  69    FREE(id_resource);
  70 }
  71
  72
  73 struct pipe_surface *
  74 identity_surface_create(struct identity_resource *id_resource,
  75                         struct pipe_surface *surface)
  76 {
  77    struct identity_surface *id_surface;
  78
  79    if(!surface)
  80       goto error;
  81
  82    assert(surface->texture == id_resource->resource);
  83
  84    id_surface = CALLOC_STRUCT(identity_surface);
  85    if(!id_surface)
  86       goto error;
  87
  88    memcpy(&id_surface->base, surface, sizeof(struct pipe_surface));
  89
  90    pipe_reference_init(&id_surface->base.reference, 1);
  91    id_surface->base.texture = NULL;
  92    pipe_resource_reference(&id_surface->base.texture, &id_resource->base);
  93    id_surface->surface = surface;
  94
  95    return &id_surface->base;
  96
  97 error:
  98    pipe_surface_reference(&surface, NULL);
  99    return NULL;
 100 }
 101
 102 void
 103 identity_surface_destroy(struct identity_surface *id_surface)
 104 {
 105    pipe_resource_reference(&id_surface->base.texture, NULL);
 106    pipe_surface_reference(&id_surface->surface, NULL);
 107    FREE(id_surface);
 108 }
 109
 110
 111 struct pipe_transfer *
 112 identity_transfer_create(struct identity_context *id_context,
 113                          struct identity_resource *id_resource,
 114                          struct pipe_transfer *transfer)
 115 {
 116    struct identity_transfer *id_transfer;
 117
 118    if(!transfer)
 119       goto error;
 120
 121    assert(transfer->resource == id_resource->resource);
 122
 123    id_transfer = CALLOC_STRUCT(identity_transfer);
 124    if(!id_transfer)
 125       goto error;
 126
 127    memcpy(&id_transfer->base, transfer, sizeof(struct pipe_transfer));
 128
 129    id_transfer->base.resource = NULL;
 130    id_transfer->transfer = transfer;
 131
 132    pipe_resource_reference(&id_transfer->base.resource, &id_resource->base);
 133    assert(id_transfer->base.resource == &id_resource->base);
 134
 135    return &id_transfer->base;
 136
 137 error:
 138    id_context->pipe->transfer_destroy(id_context->pipe, transfer);
 139    return NULL;
 140 }
 141
 142 void
 143 identity_transfer_destroy(struct identity_context *id_context,
 144                           struct identity_transfer *id_transfer)
 145 {
 146    pipe_resource_reference(&id_transfer->base.resource, NULL);
 147    id_context->pipe->transfer_destroy(id_context->pipe,
 148                                       id_transfer->transfer);
 149    FREE(id_transfer);
 150 }
 151