src/gallium/auxiliary/pipe-loader/pipe_loader_sw.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2012 Francisco Jerez
   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 "pipe_loader_priv.h"
  29
  30 #include "util/u_memory.h"
  31 #include "util/u_dl.h"
  32 #include "sw/dri/dri_sw_winsys.h"
  33 #include "sw/null/null_sw_winsys.h"
  34 #ifdef HAVE_PIPE_LOADER_XLIB
  35 /* Explicitly wrap the header to ease build without X11 headers */
  36 #include "sw/xlib/xlib_sw_winsys.h"
  37 #endif
  38 #include "target-helpers/inline_sw_helper.h"
  39 #include "state_tracker/drisw_api.h"
  40
  41 struct pipe_loader_sw_device {
  42    struct pipe_loader_device base;
  43    struct util_dl_library *lib;
  44    struct sw_winsys *ws;
  45 };
  46
  47 #define pipe_loader_sw_device(dev) ((struct pipe_loader_sw_device *)dev)
  48
  49 static struct pipe_loader_ops pipe_loader_sw_ops;
  50
  51 static struct sw_winsys *(*backends[])() = {
  52    null_sw_create
  53 };
  54
  55 #ifdef HAVE_PIPE_LOADER_XLIB
  56 bool
  57 pipe_loader_sw_probe_xlib(struct pipe_loader_device **devs, Display *display)
  58 {
  59    struct pipe_loader_sw_device *sdev = CALLOC_STRUCT(pipe_loader_sw_device);
  60
  61    if (!sdev)
  62       return false;
  63
  64    sdev->base.type = PIPE_LOADER_DEVICE_SOFTWARE;
  65    sdev->base.driver_name = "swrast";
  66    sdev->base.ops = &pipe_loader_sw_ops;
  67    sdev->ws = xlib_create_sw_winsys(display);
  68    if (!sdev->ws) {
  69       FREE(sdev);
  70       return false;
  71    }
  72    *devs = &sdev->base;
  73
  74    return true;
  75 }
  76 #endif
  77
  78 #ifdef HAVE_PIPE_LOADER_DRI
  79 bool
  80 pipe_loader_sw_probe_dri(struct pipe_loader_device **devs, struct drisw_loader_funcs *drisw_lf)
  81 {
  82    struct pipe_loader_sw_device *sdev = CALLOC_STRUCT(pipe_loader_sw_device);
  83
  84    if (!sdev)
  85       return false;
  86
  87    sdev->base.type = PIPE_LOADER_DEVICE_SOFTWARE;
  88    sdev->base.driver_name = "swrast";
  89    sdev->base.ops = &pipe_loader_sw_ops;
  90    sdev->ws = dri_create_sw_winsys(drisw_lf);
  91    if (!sdev->ws) {
  92       FREE(sdev);
  93       return false;
  94    }
  95    *devs = &sdev->base;
  96
  97    return true;
  98 }
  99 #endif
 100
 101 bool
 102 pipe_loader_sw_probe_null(struct pipe_loader_device **devs)
 103 {
 104    struct pipe_loader_sw_device *sdev = CALLOC_STRUCT(pipe_loader_sw_device);
 105
 106    if (!sdev)
 107       return false;
 108
 109    sdev->base.type = PIPE_LOADER_DEVICE_SOFTWARE;
 110    sdev->base.driver_name = "swrast";
 111    sdev->base.ops = &pipe_loader_sw_ops;
 112    sdev->ws = null_sw_create();
 113    if (!sdev->ws) {
 114       FREE(sdev);
 115       return false;
 116    }
 117    *devs = &sdev->base;
 118
 119    return true;
 120 }
 121
 122 int
 123 pipe_loader_sw_probe(struct pipe_loader_device **devs, int ndev)
 124 {
 125    int i;
 126
 127    for (i = 0; i < Elements(backends); i++) {
 128       if (i < ndev) {
 129          struct pipe_loader_sw_device *sdev = CALLOC_STRUCT(pipe_loader_sw_device);
 130          /* TODO: handle CALLOC_STRUCT failure */
 131
 132          sdev->base.type = PIPE_LOADER_DEVICE_SOFTWARE;
 133          sdev->base.driver_name = "swrast";
 134          sdev->base.ops = &pipe_loader_sw_ops;
 135          sdev->ws = backends[i]();
 136          devs[i] = &sdev->base;
 137       }
 138    }
 139
 140    return i;
 141 }
 142
 143 static void
 144 pipe_loader_sw_release(struct pipe_loader_device **dev)
 145 {
 146    struct pipe_loader_sw_device *sdev = pipe_loader_sw_device(*dev);
 147
 148    if (sdev->lib)
 149       util_dl_close(sdev->lib);
 150
 151    FREE(sdev);
 152    *dev = NULL;
 153 }
 154
 155 static const struct drm_conf_ret *
 156 pipe_loader_sw_configuration(struct pipe_loader_device *dev,
 157                              enum drm_conf conf)
 158 {
 159    return NULL;
 160 }
 161
 162 static struct pipe_screen *
 163 pipe_loader_sw_create_screen(struct pipe_loader_device *dev,
 164                              const char *library_paths)
 165 {
 166    struct pipe_loader_sw_device *sdev = pipe_loader_sw_device(dev);
 167    struct pipe_screen *(*init)(struct sw_winsys *);
 168
 169    if (!sdev->lib)
 170       sdev->lib = pipe_loader_find_module(dev, library_paths);
 171    if (!sdev->lib)
 172       return NULL;
 173
 174    init = (void *)util_dl_get_proc_address(sdev->lib, "swrast_create_screen");
 175    if (!init){
 176       util_dl_close(sdev->lib);
 177       sdev->lib = NULL;
 178       return NULL;
 179    }
 180
 181    return init(sdev->ws);
 182 }
 183
 184 static struct pipe_loader_ops pipe_loader_sw_ops = {
 185    .create_screen = pipe_loader_sw_create_screen,
 186    .configuration = pipe_loader_sw_configuration,
 187    .release = pipe_loader_sw_release
 188 };