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/wrapper/wrapper_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_PIPE_LOADER_DRI
  53 bool
  54 pipe_loader_sw_probe_dri(struct pipe_loader_device **devs, struct drisw_loader_funcs *drisw_lf)
  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 = dri_create_sw_winsys(drisw_lf);
  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_null(struct pipe_loader_device **devs)
  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 = null_sw_create();
  87    if (!sdev->ws) {
  88       FREE(sdev);
  89       return false;
  90    }
  91    *devs = &sdev->base;
  92
  93    return true;
  94 }
  95
  96 int
  97 pipe_loader_sw_probe(struct pipe_loader_device **devs, int ndev)
  98 {
  99    int i;
 100
 101    for (i = 0; i < Elements(backends); i++) {
 102       if (i < ndev) {
 103          struct pipe_loader_sw_device *sdev = CALLOC_STRUCT(pipe_loader_sw_device);
 104          /* TODO: handle CALLOC_STRUCT failure */
 105
 106          sdev->base.type = PIPE_LOADER_DEVICE_SOFTWARE;
 107          sdev->base.driver_name = "swrast";
 108          sdev->base.ops = &pipe_loader_sw_ops;
 109          sdev->ws = backends[i]();
 110          devs[i] = &sdev->base;
 111       }
 112    }
 113
 114    return i;
 115 }
 116
 117 boolean
 118 pipe_loader_sw_probe_wrapped(struct pipe_loader_device **dev,
 119                              struct pipe_screen *screen)
 120 {
 121    struct pipe_loader_sw_device *sdev = CALLOC_STRUCT(pipe_loader_sw_device);
 122
 123    if (!sdev)
 124       return false;
 125
 126    sdev->base.type = PIPE_LOADER_DEVICE_SOFTWARE;
 127    sdev->base.driver_name = "swrast";
 128    sdev->base.ops = &pipe_loader_sw_ops;
 129    sdev->ws = wrapper_sw_winsys_wrap_pipe_screen(screen);
 130
 131    if (!sdev->ws) {
 132       FREE(sdev);
 133       return false;
 134    }
 135    *dev = &sdev->base;
 136    return true;
 137 }
 138
 139 static void
 140 pipe_loader_sw_release(struct pipe_loader_device **dev)
 141 {
 142    struct pipe_loader_sw_device *sdev = pipe_loader_sw_device(*dev);
 143
 144    if (sdev->lib)
 145       util_dl_close(sdev->lib);
 146
 147    FREE(sdev);
 148    *dev = NULL;
 149 }
 150
 151 static const struct drm_conf_ret *
 152 pipe_loader_sw_configuration(struct pipe_loader_device *dev,
 153                              enum drm_conf conf)
 154 {
 155    return NULL;
 156 }
 157
 158 static struct pipe_screen *
 159 pipe_loader_sw_create_screen(struct pipe_loader_device *dev,
 160                              const char *library_paths)
 161 {
 162    struct pipe_loader_sw_device *sdev = pipe_loader_sw_device(dev);
 163    struct pipe_screen *(*init)(struct sw_winsys *);
 164
 165    if (!sdev->lib)
 166       sdev->lib = pipe_loader_find_module(dev, library_paths);
 167    if (!sdev->lib)
 168       return NULL;
 169
 170    init = (void *)util_dl_get_proc_address(sdev->lib, "swrast_create_screen");
 171    if (!init){
 172       util_dl_close(sdev->lib);
 173       sdev->lib = NULL;
 174       return NULL;
 175    }
 176
 177    return init(sdev->ws);
 178 }
 179
 180 static struct pipe_loader_ops pipe_loader_sw_ops = {
 181    .create_screen = pipe_loader_sw_create_screen,
 182    .configuration = pipe_loader_sw_configuration,
 183    .release = pipe_loader_sw_release
 184 };