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 #include "sw/xlib/xlib_sw_winsys.h"
  35 #include "target-helpers/inline_sw_helper.h"
  36 #include "state_tracker/drisw_api.h"
  37
  38 struct pipe_loader_sw_device {
  39    struct pipe_loader_device base;
  40    struct util_dl_library *lib;
  41    struct sw_winsys *ws;
  42 };
  43
  44 #define pipe_loader_sw_device(dev) ((struct pipe_loader_sw_device *)dev)
  45
  46 static struct pipe_loader_ops pipe_loader_sw_ops;
  47
  48 static struct sw_winsys *(*backends[])() = {
  49    null_sw_create
  50 };
  51
  52 #ifdef HAVE_WINSYS_XLIB
  53 bool
  54 pipe_loader_sw_probe_xlib(struct pipe_loader_device **devs, Display *display)
  55 {
  56    struct pipe_loader_sw_device *sdev = CALLOC_STRUCT(pipe_loader_sw_device);
  57
  58    if (!sdev)
  59       return false;
  60
  61    sdev->base.type = PIPE_LOADER_DEVICE_SOFTWARE;
  62    sdev->base.driver_name = "swrast";
  63    sdev->base.ops = &pipe_loader_sw_ops;
  64    sdev->ws = xlib_create_sw_winsys(display);
  65    if (!sdev->ws) {
  66       FREE(sdev);
  67       return false;
  68    }
  69    *devs = &sdev->base;
  70
  71    return true;
  72 }
  73 #endif
  74
  75 bool
  76 pipe_loader_sw_probe_dri(struct pipe_loader_device **devs, struct drisw_loader_funcs *drisw_lf)
  77 {
  78    struct pipe_loader_sw_device *sdev = CALLOC_STRUCT(pipe_loader_sw_device);
  79
  80    if (!sdev)
  81       return false;
  82
  83    sdev->base.type = PIPE_LOADER_DEVICE_SOFTWARE;
  84    sdev->base.driver_name = "swrast";
  85    sdev->base.ops = &pipe_loader_sw_ops;
  86    sdev->ws = dri_create_sw_winsys(drisw_lf);
  87    if (!sdev->ws) {
  88       FREE(sdev);
  89       return false;
  90    }
  91    *devs = &sdev->base;
  92
  93    return true;
  94 }
  95
  96 bool
  97 pipe_loader_sw_probe_null(struct pipe_loader_device **devs)
  98 {
  99    struct pipe_loader_sw_device *sdev = CALLOC_STRUCT(pipe_loader_sw_device);
 100
 101    if (!sdev)
 102       return false;
 103
 104    sdev->base.type = PIPE_LOADER_DEVICE_SOFTWARE;
 105    sdev->base.driver_name = "swrast";
 106    sdev->base.ops = &pipe_loader_sw_ops;
 107    sdev->ws = null_sw_create();
 108    if (!sdev->ws) {
 109       FREE(sdev);
 110       return false;
 111    }
 112    *devs = &sdev->base;
 113
 114    return true;
 115 }
 116
 117 int
 118 pipe_loader_sw_probe(struct pipe_loader_device **devs, int ndev)
 119 {
 120    int i;
 121
 122    for (i = 0; i < Elements(backends); i++) {
 123       if (i < ndev) {
 124          struct pipe_loader_sw_device *sdev = CALLOC_STRUCT(pipe_loader_sw_device);
 125          /* TODO: handle CALLOC_STRUCT failure */
 126
 127          sdev->base.type = PIPE_LOADER_DEVICE_SOFTWARE;
 128          sdev->base.driver_name = "swrast";
 129          sdev->base.ops = &pipe_loader_sw_ops;
 130          sdev->ws = backends[i]();
 131          devs[i] = &sdev->base;
 132       }
 133    }
 134
 135    return i;
 136 }
 137
 138 static void
 139 pipe_loader_sw_release(struct pipe_loader_device **dev)
 140 {
 141    struct pipe_loader_sw_device *sdev = pipe_loader_sw_device(*dev);
 142
 143    if (sdev->ws && sdev->ws->destroy)
 144       sdev->ws->destroy(sdev->ws);
 145
 146    if (sdev->lib)
 147       util_dl_close(sdev->lib);
 148
 149    FREE(sdev);
 150    *dev = NULL;
 151 }
 152
 153 static struct pipe_screen *
 154 pipe_loader_sw_create_screen(struct pipe_loader_device *dev,
 155                              const char *library_paths)
 156 {
 157    struct pipe_loader_sw_device *sdev = pipe_loader_sw_device(dev);
 158    struct pipe_screen *(*init)(struct sw_winsys *);
 159
 160    if (!sdev->lib)
 161       sdev->lib = pipe_loader_find_module(dev, library_paths);
 162    if (!sdev->lib)
 163       return NULL;
 164
 165    init = (void *)util_dl_get_proc_address(sdev->lib, "swrast_create_screen");
 166    if (!init){
 167       util_dl_close(sdev->lib);
 168       sdev->lib = NULL;
 169       return NULL;
 170    }
 171
 172    return init(sdev->ws);
 173 }
 174
 175 static struct pipe_loader_ops pipe_loader_sw_ops = {
 176    .create_screen = pipe_loader_sw_create_screen,
 177    .release = pipe_loader_sw_release
 178 };