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gallium: Add pipe loader for device enumeration and driver multiplexing. 

The goal is to have a uniform interface to create winsys and
pipe_screen instances for any driver, exposing the device enumeration
capabilities that might be supported by the operating system (for now
there's a "drm" back-end using udev and a "sw" back-end that always
returns the same built-in devices).

The typical use case of this library will be:
>
> struct pipe_loader_device devs[n];
> struct pipe_screen *screen;
>
> pipe_loader_probe(&devs, n);
>[pick some device from the array...]
>
> screen = pipe_loader_create_screen(dev, library_search_path);
>[do something with screen...]
>
> screen->destroy(screen);
> pipe_loader_release(&devs, N);
>

A part of the code was taken from targets/gbm/pipe_loader.c, which
will be removed and replaced with calls into this library by a future
commit.
This commit is contained in:
Francisco Jerez 2012-04-25 22:16:00 +02:00
parent 2faf01c840
commit e136453062
10 changed files with 691 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
configs/autoconf.in
View File

@ -219,3 +219,6 @@ MESA_LLVM = @MESA_LLVM@
LLVM_VERSION = @LLVM_VERSION@
HAVE_XF86VIDMODE = @HAVE_XF86VIDMODE@
GALLIUM_PIPE_LOADER_DEFINES = @GALLIUM_PIPE_LOADER_DEFINES@
GALLIUM_PIPE_LOADER_LIBS = @GALLIUM_PIPE_LOADER_LIBS@

22
configure.ac
View File

@ -1967,6 +1967,25 @@ if test "x$with_gallium_drivers" != x; then
done
fi
if test "x$enable_gallium_loader" = xyes; then
GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS sw/null"
GALLIUM_PIPE_LOADER_DEFINES="-DHAVE_PIPE_LOADER_SW"
GALLIUM_PIPE_LOADER_LIBS="\$(TOP)/src/gallium/auxiliary/pipe-loader/libpipe_loader.a"
GALLIUM_PIPE_LOADER_LIBS="$GALLIUM_PIPE_LOADER_LIBS \$(TOP)/src/gallium/winsys/sw/null/libws_null.a"
if test "x$HAVE_WINSYS_XLIB" = xyes; then
GALLIUM_PIPE_LOADER_DEFINES="$GALLIUM_PIPE_LOADER_DEFINES -DHAVE_PIPE_LOADER_XLIB"
GALLIUM_PIPE_LOADER_LIBS="$GALLIUM_PIPE_LOADER_LIBS \$(TOP)/src/gallium/winsys/sw/xlib/libws_xlib.a"
fi
if test "x$enable_gallium_drm_loader" = xyes; then
GALLIUM_PIPE_LOADER_DEFINES="$GALLIUM_PIPE_LOADER_DEFINES -DHAVE_PIPE_LOADER_DRM"
fi
AC_SUBST([GALLIUM_PIPE_LOADER_DEFINES])
AC_SUBST([GALLIUM_PIPE_LOADER_LIBS])
fi
dnl Tell Automake which drivers to build
for driver in $GALLIUM_DRIVERS_DIRS; do
case "x$driver" in
@ -1990,6 +2009,8 @@ AM_CONDITIONAL(HAVE_IDENTITY_GALLIUM, test x$HAVE_IDENTITY_GALLIUM = xyes)
AM_CONDITIONAL(HAVE_NOOP_GALLIUM, test x$HAVE_NOOP_GALLIUM = xyes)
AM_CONDITIONAL(NEED_RADEON_GALLIUM, test x$NEED_RADEON_GALLIUM = xyes)
AM_CONDITIONAL(USE_R600_LLVM_COMPILER, test x$USE_R600_LLVM_COMPILER = xyes)
AM_CONDITIONAL(HAVE_LOADER_GALLIUM, test x$enable_gallium_loader = xyes)
AM_CONDITIONAL(HAVE_DRM_LOADER_GALLIUM, test x$enable_gallium_drm_loader = xyes)
AC_SUBST([GALLIUM_MAKE_DIRS])
dnl prepend CORE_DIRS to SRC_DIRS
@ -2005,6 +2026,7 @@ CXXFLAGS="$CXXFLAGS $USER_CXXFLAGS"
dnl Substitute the config
AC_CONFIG_FILES([configs/autoconf
src/gallium/auxiliary/pipe-loader/Makefile
src/gallium/drivers/Makefile
src/gallium/drivers/r300/Makefile
src/gallium/drivers/r600/Makefile

8
src/gallium/auxiliary/Makefile
View File

@ -18,6 +18,14 @@ endif
include ../Makefile.template
default install clean: %: subdirs-%
subdirs-%:
@for dir in $(SUBDIRS) ; do \
if [ -d $$dir ] ; then \
(cd $$dir && $(MAKE) $*) || exit 1; \
fi \
done
indices/u_indices_gen.c: indices/u_indices_gen.py
$(PYTHON2) $< > $@

2
src/gallium/auxiliary/Makefile.sources
View File

@ -1,3 +1,5 @@
SUBDIRS := pipe-loader
C_SOURCES := \
cso_cache/cso_cache.c \
cso_cache/cso_context.c \

38
src/gallium/auxiliary/pipe-loader/Makefile.am Normal file
View File

@ -0,0 +1,38 @@
AUTOMAKE_OPTIONS = subdir-objects
AM_CPPFLAGS = $(DEFINES) \
$(GALLIUM_PIPE_LOADER_DEFINES) \
-I$(top_srcdir)/include \
-I$(top_srcdir)/src/gallium/include \
-I$(top_srcdir)/src/gallium/auxiliary \
-I$(top_srcdir)/src/gallium/winsys
AM_CFLAGS = $(PIC_FLAGS)
noinst_LTLIBRARIES =
if HAVE_LOADER_GALLIUM
noinst_LTLIBRARIES += libpipe_loader.la
libpipe_loader_la_SOURCES = \
pipe_loader.h \
pipe_loader_priv.h \
pipe_loader.c \
pipe_loader_sw.c
if HAVE_DRM_LOADER_GALLIUM
libpipe_loader_la_SOURCES += pipe_loader_drm.c
AM_CFLAGS += $(LIBDRM_CFLAGS)
endif
# Provide compatibility with scripts for the old Mesa build system for
# a while by putting a link to the library in the current directory.
all-local: libpipe_loader.la
ln -f .libs/libpipe_loader.a .
clean-local:
rm -f libpipe_loader.a
endif
# FIXME: Remove when the rest of Gallium is converted to automake.
default: all

102
src/gallium/auxiliary/pipe-loader/pipe_loader.c Normal file
View File

@ -0,0 +1,102 @@
/**************************************************************************
*
* Copyright 2012 Francisco Jerez
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include "pipe_loader_priv.h"
#include "util/u_inlines.h"
#include "util/u_memory.h"
#include "util/u_string.h"
#include "util/u_dl.h"
#define MODULE_PREFIX "pipe_"
static int (*backends[])(struct pipe_loader_device **, int) = {
#ifdef HAVE_PIPE_LOADER_DRM
&pipe_loader_drm_probe,
#endif
&pipe_loader_sw_probe
};
int
pipe_loader_probe(struct pipe_loader_device **devs, int ndev)
{
int i, n = 0;
for (i = 0; i < Elements(backends); i++)
n += backends[i](&devs[n], MAX2(0, ndev - n));
return n;
}
void
pipe_loader_release(struct pipe_loader_device **devs, int ndev)
{
int i;
for (i = 0; i < ndev; i++)
devs[i]->ops->release(&devs[i]);
}
struct pipe_screen *
pipe_loader_create_screen(struct pipe_loader_device *dev,
const char *library_paths)
{
return dev->ops->create_screen(dev, library_paths);
}
struct util_dl_library *
pipe_loader_find_module(struct pipe_loader_device *dev,
const char *library_paths)
{
struct util_dl_library *lib;
const char *next;
char path[PATH_MAX];
int len, ret;
for (next = library_paths; *next; library_paths = next + 1) {
next = util_strchrnul(library_paths, ':');
len = next - library_paths;
if (len)
ret = util_snprintf(path, sizeof(path), "%.*s/%s%s%s",
len, library_paths,
MODULE_PREFIX, dev->driver_name, UTIL_DL_EXT);
else
ret = util_snprintf(path, sizeof(path), "%s%s%s",
MODULE_PREFIX, dev->driver_name, UTIL_DL_EXT);
if (ret > 0 && ret < sizeof(path)) {
lib = util_dl_open(path);
if (lib) {
debug_printf("loaded %s\n", path);
return lib;
}
}
}
return NULL;
}

144
src/gallium/auxiliary/pipe-loader/pipe_loader.h Normal file
View File

@ -0,0 +1,144 @@
/**************************************************************************
*
* Copyright 2012 Francisco Jerez
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/**
* \file Library that provides device enumeration and creation of
* winsys/pipe_screen instances.
*/
#ifndef PIPE_LOADER_H
#define PIPE_LOADER_H
#include "pipe/p_compiler.h"
#ifdef __cplusplus
extern "C" {
#endif
struct pipe_screen;
enum pipe_loader_device_type {
PIPE_LOADER_DEVICE_SOFTWARE,
PIPE_LOADER_DEVICE_PCI,
NUM_PIPE_LOADER_DEVICE_TYPES
};
/**
* A device known to the pipe loader.
*/
struct pipe_loader_device {
enum pipe_loader_device_type type;
union {
struct {
int vendor_id;
int chip_id;
} pci;
}; /**< Discriminated by \a type */
const char *driver_name;
const struct pipe_loader_ops *ops;
};
/**
* Get a list of known devices.
*
* \param devs Array that will be filled with pointers to the devices
* available in the system.
* \param ndev Maximum number of devices to return.
* \return Number of devices available in the system.
*/
int
pipe_loader_probe(struct pipe_loader_device **devs, int ndev);
/**
* Create a pipe_screen for the specified device.
*
* \param dev Device the screen will be created for.
* \param library_paths Colon-separated list of filesystem paths that
* will be used to look for the pipe driver
* module that handles this device.
*/
struct pipe_screen *
pipe_loader_create_screen(struct pipe_loader_device *dev,
const char *library_paths);
/**
* Release resources allocated for a list of devices.
*
* Should be called when the specified devices are no longer in use to
* release any resources allocated by pipe_loader_probe.
*
* \param devs Devices to release.
* \param ndev Number of devices to release.
*/
void
pipe_loader_release(struct pipe_loader_device **devs, int ndev);
#ifdef HAVE_PIPE_LOADER_SW
/**
* Get a list of known software devices.
*
* This function is platform-specific.
*
* \sa pipe_loader_probe
*/
int
pipe_loader_sw_probe(struct pipe_loader_device **devs, int ndev);
#endif
#ifdef HAVE_PIPE_LOADER_DRM
/**
* Get a list of known DRM devices.
*
* This function is platform-specific.
*
* \sa pipe_loader_probe
*/
int
pipe_loader_drm_probe(struct pipe_loader_device **devs, int ndev);
/**
* Initialize a DRM device in an already opened fd.
*
* This function is platform-specific.
*
* \sa pipe_loader_probe
*/
boolean
pipe_loader_drm_probe_fd(struct pipe_loader_device **dev, int fd);
#endif
#ifdef __cplusplus
}
#endif
#endif /* PIPE_LOADER_H */

218
src/gallium/auxiliary/pipe-loader/pipe_loader_drm.c Normal file
View File

@ -0,0 +1,218 @@
/**************************************************************************
*
* Copyright 2011 Intel Corporation
* Copyright 2012 Francisco Jerez
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Authors:
* Kristian Høgsberg <krh@bitplanet.net>
* Benjamin Franzke <benjaminfranzke@googlemail.com>
*
**************************************************************************/
#include <fcntl.h>
#include <stdio.h>
#include <libudev.h>
#include <xf86drm.h>
#include "state_tracker/drm_driver.h"
#include "pipe_loader_priv.h"
#include "util/u_memory.h"
#include "util/u_dl.h"
#include "util/u_debug.h"
#define DRIVER_MAP_GALLIUM_ONLY
#include "pci_ids/pci_id_driver_map.h"
struct pipe_loader_drm_device {
struct pipe_loader_device base;
struct util_dl_library *lib;
int fd;
};
#define pipe_loader_drm_device(dev) ((struct pipe_loader_drm_device *)dev)
static boolean
find_drm_pci_id(struct pipe_loader_drm_device *ddev)
{
struct udev *udev = NULL;
struct udev_device *parent, *device = NULL;
struct stat stat;
const char *pci_id;
if (fstat(ddev->fd, &stat) < 0)
goto fail;
udev = udev_new();
if (!udev)
goto fail;
device = udev_device_new_from_devnum(udev, 'c', stat.st_rdev);
if (!device)
goto fail;
parent = udev_device_get_parent(device);
if (!parent)
goto fail;
pci_id = udev_device_get_property_value(parent, "PCI_ID");
if (!pci_id ||
sscanf(pci_id, "%x:%x", &ddev->base.pci.vendor_id,
&ddev->base.pci.chip_id) != 2)
goto fail;
return TRUE;
fail:
if (device)
udev_device_unref(device);
if (udev)
udev_unref(udev);
debug_printf("pci id for fd %d not found\n", ddev->fd);
return FALSE;
}
static boolean
find_drm_driver_name(struct pipe_loader_drm_device *ddev)
{
struct pipe_loader_device *dev = &ddev->base;
int i, j;
for (i = 0; driver_map[i].driver; i++) {
if (dev->pci.vendor_id != driver_map[i].vendor_id)
continue;
if (driver_map[i].num_chips_ids == -1) {
dev->driver_name = driver_map[i].driver;
goto found;
}
for (j = 0; j < driver_map[i].num_chips_ids; j++) {
if (dev->pci.chip_id == driver_map[i].chip_ids[j]) {
dev->driver_name = driver_map[i].driver;
goto found;
}
}
}
return FALSE;
found:
debug_printf("driver for %04x:%04x: %s\n", dev->pci.vendor_id,
dev->pci.chip_id, dev->driver_name);
return TRUE;
}
static struct pipe_loader_ops pipe_loader_drm_ops;
boolean
pipe_loader_drm_probe_fd(struct pipe_loader_device **dev, int fd)
{
struct pipe_loader_drm_device *ddev = CALLOC_STRUCT(pipe_loader_drm_device);
ddev->base.type = PIPE_LOADER_DEVICE_PCI;
ddev->base.ops = &pipe_loader_drm_ops;
ddev->fd = fd;
if (!find_drm_pci_id(ddev))
goto fail;
if (!find_drm_driver_name(ddev))
goto fail;
*dev = &ddev->base;
return TRUE;
fail:
FREE(ddev);
return FALSE;
}
static int
open_drm_minor(int minor)
{
char path[PATH_MAX];
snprintf(path, sizeof(path), DRM_DEV_NAME, DRM_DIR_NAME, minor);
return open(path, O_RDWR, 0);
}
int
pipe_loader_drm_probe(struct pipe_loader_device **devs, int ndev)
{
int i, j, fd;
for (i = 0, j = 0; i < DRM_MAX_MINOR; i++) {
fd = open_drm_minor(i);
if (fd < 0)
continue;
if (j >= ndev || !pipe_loader_drm_probe_fd(&devs[j], fd))
close(fd);
j++;
}
return j;
}
static void
pipe_loader_drm_release(struct pipe_loader_device **dev)
{
struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(*dev);
if (ddev->lib)
util_dl_close(ddev->lib);
close(ddev->fd);
FREE(ddev);
*dev = NULL;
}
static struct pipe_screen *
pipe_loader_drm_create_screen(struct pipe_loader_device *dev,
const char *library_paths)
{
struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
const struct drm_driver_descriptor *dd;
if (!ddev->lib)
ddev->lib = pipe_loader_find_module(dev, library_paths);
if (!ddev->lib)
return NULL;
dd = (const struct drm_driver_descriptor *)
util_dl_get_proc_address(ddev->lib, "driver_descriptor");
/* sanity check on the name */
if (!dd || strcmp(dd->name, ddev->base.driver_name) != 0)
return NULL;
return dd->create_screen(ddev->fd);
}
static struct pipe_loader_ops pipe_loader_drm_ops = {
.create_screen = pipe_loader_drm_create_screen,
.release = pipe_loader_drm_release
};

47
src/gallium/auxiliary/pipe-loader/pipe_loader_priv.h Normal file
View File

@ -0,0 +1,47 @@
/**************************************************************************
*
* Copyright 2012 Francisco Jerez
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#ifndef PIPE_LOADER_PRIV_H
#define PIPE_LOADER_PRIV_H
#include "pipe_loader.h"
struct pipe_loader_ops {
struct pipe_screen *(*create_screen)(struct pipe_loader_device *dev,
const char *library_paths);
void (*release)(struct pipe_loader_device **dev);
};
/**
* Open the pipe driver module that handles a specified device.
*/
struct util_dl_library *
pipe_loader_find_module(struct pipe_loader_device *dev,
const char *library_paths);
#endif /* PIPE_LOADER_PRIV_H */

107
src/gallium/auxiliary/pipe-loader/pipe_loader_sw.c Normal file
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@ -0,0 +1,107 @@
/**************************************************************************
*
* Copyright 2012 Francisco Jerez
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include "pipe_loader_priv.h"
#include "util/u_memory.h"
#include "util/u_dl.h"
#include "sw/null/null_sw_winsys.h"
#include "target-helpers/inline_sw_helper.h"
#include "state_tracker/xlib_sw_winsys.h"
struct pipe_loader_sw_device {
struct pipe_loader_device base;
struct util_dl_library *lib;
struct sw_winsys *ws;
};
#define pipe_loader_sw_device(dev) ((struct pipe_loader_sw_device *)dev)
static struct pipe_loader_ops pipe_loader_sw_ops;
static struct sw_winsys *(*backends[])() = {
#ifdef HAVE_WINSYS_XLIB
x11_sw_create,
#endif
null_sw_create
};
int
pipe_loader_sw_probe(struct pipe_loader_device **devs, int ndev)
{
int i;
for (i = 0; i < Elements(backends); i++) {
if (i < ndev) {
struct pipe_loader_sw_device *sdev = CALLOC_STRUCT(pipe_loader_sw_device);
sdev->base.type = PIPE_LOADER_DEVICE_SOFTWARE;
sdev->base.driver_name = "swrast";
sdev->base.ops = &pipe_loader_sw_ops;
sdev->ws = backends[i]();
devs[i] = &sdev->base;
}
}
return i;
}
static void
pipe_loader_sw_release(struct pipe_loader_device **dev)
{
struct pipe_loader_sw_device *sdev = pipe_loader_sw_device(*dev);
if (sdev->lib)
util_dl_close(sdev->lib);
FREE(sdev);
*dev = NULL;
}
static struct pipe_screen *
pipe_loader_sw_create_screen(struct pipe_loader_device *dev,
const char *library_paths)
{
struct pipe_loader_sw_device *sdev = pipe_loader_sw_device(dev);
struct pipe_screen *(*init)(struct sw_winsys *);
if (!sdev->lib)
sdev->lib = pipe_loader_find_module(dev, library_paths);
if (!sdev->lib)
return NULL;
init = (void *)util_dl_get_proc_address(sdev->lib, "swrast_create_screen");
if (!init)
return NULL;
return init(sdev->ws);
}
static struct pipe_loader_ops pipe_loader_sw_ops = {
.create_screen = pipe_loader_sw_create_screen,
.release = pipe_loader_sw_release
};