src/gallium/winsys/drm/sw/sw_drm_api.c

   1 /**********************************************************
   2  * Copyright 2010 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **********************************************************/
  25
  26
  27 #include "pipe/p_screen.h"
  28 #include "util/u_memory.h"
  29 #include "target-helpers/soft_screen.h"
  30
  31 #include "state_tracker/sw_winsys.h"
  32 #include "state_tracker/drm_api.h"
  33 #include "wrapper_sw_winsys.h"
  34 #include "sw_drm_api.h"
  35
  36
  37 /*
  38  * Defines
  39  */
  40
  41
  42 struct sw_drm_api
  43 {
  44    struct drm_api base;
  45    struct drm_api *api;
  46 };
  47
  48 static INLINE struct sw_drm_api *
  49 sw_drm_api(struct drm_api *api)
  50 {
  51    return (struct sw_drm_api *)api;
  52 }
  53
  54
  55 /*
  56  * Exported functions
  57  */
  58
  59
  60 static struct pipe_screen *
  61 sw_drm_create_screen(struct drm_api *_api, int drmFD,
  62                      struct drm_create_screen_arg *arg)
  63 {
  64    struct sw_drm_api *swapi = sw_drm_api(_api);
  65    struct drm_api *api = swapi->api;
  66    struct sw_winsys *sww = NULL;
  67    struct pipe_screen *screen = NULL;
  68    struct pipe_screen *soft_screen = NULL;
  69
  70    screen = api->create_screen(api, drmFD, arg);
  71    if (screen == NULL)
  72       goto fail;
  73
  74    sww = wrapper_sw_winsys_warp_pipe_screen(screen);
  75    if (sww == NULL)
  76       goto fail;
  77
  78    soft_screen = gallium_soft_create_screen(sww);
  79    if (soft_screen == NULL)
  80       goto fail;
  81
  82    return soft_screen;
  83
  84 fail:
  85    if (soft_screen)
  86       soft_screen->destroy(soft_screen);
  87
  88    if (sww)
  89       sww->destroy(sww);
  90
  91    if (screen)
  92       screen->destroy(screen);
  93
  94    return NULL;
  95 }
  96
  97 static void
  98 sw_drm_destroy(struct drm_api *api)
  99 {
 100    struct sw_drm_api *swapi = sw_drm_api(api);
 101    if (swapi->api->destroy)
 102       swapi->api->destroy(swapi->api);
 103
 104    FREE(swapi);
 105 }
 106
 107 struct drm_api *
 108 sw_drm_api_create(struct drm_api *api)
 109 {
 110    struct sw_drm_api *swapi = CALLOC_STRUCT(sw_drm_api);
 111
 112    swapi->base.name = "sw";
 113    swapi->base.driver_name = api->driver_name;
 114    swapi->base.create_screen = sw_drm_create_screen;
 115    swapi->base.destroy = sw_drm_destroy;
 116
 117    swapi->api = api;
 118
 119    return &swapi->base;
 120 }