[Mesa-dev] [PATCH v3 2/3] Add a dumb drm/kms winsys for software rendering
Giovanni Campagna
scampa.giovanni at gmail.com
Sun Jun 15 04:49:50 PDT 2014
From: Giovanni Campagna <gcampagna at src.gnome.org>
Add a new winsys and target that can be used with a dri2 state tracker and
loader instead of drisw. This allows to use gbm as a dri2/image loader
and avoid the extra copy from the backbuffer to the shadow frontbuffer.
The new driver is called "kms_swrast", and is only loaded by gbm
as a fallback, because it is only useful with the gbm platform
(as no buffer sharing is possible)
---
configure.ac | 5 +
docs/relnotes/10.3.html | 2 +
src/gallium/targets/Makefile.am | 3 +
src/gallium/targets/dri-kms-swrast/Makefile.am | 61 ++++
.../targets/dri-kms-swrast/kms_swrast_drm_api.c | 65 +++++
src/gallium/winsys/Makefile.am | 5 +
src/gallium/winsys/sw/kms-dri/Makefile.am | 33 +++
src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.c | 312 +++++++++++++++++++++
src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.h | 37 +++
src/gbm/backends/dri/gbm_dri.c | 31 +-
10 files changed, 549 insertions(+), 5 deletions(-)
create mode 100644 src/gallium/targets/dri-kms-swrast/Makefile.am
create mode 100644 src/gallium/targets/dri-kms-swrast/kms_swrast_drm_api.c
create mode 100644 src/gallium/winsys/sw/kms-dri/Makefile.am
create mode 100644 src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.c
create mode 100644 src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.h
diff --git a/configure.ac b/configure.ac
index 390adaa..07e4648 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1993,6 +1993,9 @@ if test -n "$with_gallium_drivers"; then
if test "x$enable_dri" = xyes; then
GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS dri-swrast"
fi
+ if text "x$have_libdrm" = xyes; then
+ GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS dri-kms-swrast"
+ fi
;;
*)
AC_MSG_ERROR([Unknown Gallium driver: $driver])
@@ -2206,6 +2209,7 @@ AC_CONFIG_FILES([Makefile
src/gallium/state_trackers/xvmc/Makefile
src/gallium/targets/Makefile
src/gallium/targets/dri-freedreno/Makefile
+ src/gallium/targets/dri-kms-swrast/Makefile
src/gallium/targets/dri-i915/Makefile
src/gallium/targets/dri-ilo/Makefile
src/gallium/targets/dri-nouveau/Makefile
@@ -2243,6 +2247,7 @@ AC_CONFIG_FILES([Makefile
src/gallium/winsys/svga/drm/Makefile
src/gallium/winsys/sw/dri/Makefile
src/gallium/winsys/sw/fbdev/Makefile
+ src/gallium/winsys/sw/kms-dri/Makefile
src/gallium/winsys/sw/null/Makefile
src/gallium/winsys/sw/wayland/Makefile
src/gallium/winsys/sw/wrapper/Makefile
diff --git a/docs/relnotes/10.3.html b/docs/relnotes/10.3.html
index 7ceaca4..6c47c19 100644
--- a/docs/relnotes/10.3.html
+++ b/docs/relnotes/10.3.html
@@ -48,6 +48,8 @@ Note: some of the new features are only available with certain drivers.
<li>GL_ARB_stencil_texturing on nv50, nvc0, r600, and radeonsi</li>
<li>GL_ARB_texture_cube_map_array on radeonsi</li>
<li>GL_ARB_compressed_texture_pixel_storage on all drivers</li>
+<li>A new software rasterizer driver (kms_swrast_dri.so) that works with
+DRM drivers that don't have a full-fledged GEM (such as qxl or simpledrm)</li>
</ul>
diff --git a/src/gallium/targets/Makefile.am b/src/gallium/targets/Makefile.am
index 36d359c..16f88ba 100644
--- a/src/gallium/targets/Makefile.am
+++ b/src/gallium/targets/Makefile.am
@@ -126,6 +126,9 @@ if HAVE_GALLIUM_SOFTPIPE
if HAVE_DRISW
SUBDIRS += dri-swrast
endif
+if HAVE_DRI2
+SUBDIRS += dri-kms-swrast
+endif
endif
if NEED_GALLIUM_LOADER
diff --git a/src/gallium/targets/dri-kms-swrast/Makefile.am b/src/gallium/targets/dri-kms-swrast/Makefile.am
new file mode 100644
index 0000000..09a8d17
--- /dev/null
+++ b/src/gallium/targets/dri-kms-swrast/Makefile.am
@@ -0,0 +1,61 @@
+# Copyright © 2012 Intel Corporation
+#
+# 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, sublicense,
+# 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
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS 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 $(top_srcdir)/src/gallium/Automake.inc
+
+AM_CFLAGS = \
+ $(EXPAT_CFLAGS) \
+ $(GALLIUM_DRI_CFLAGS)
+AM_CPPFLAGS = \
+ -I$(top_srcdir)/src/gallium/winsys/sw/kms-dri \
+ -I$(top_builddir)/src/mesa/drivers/dri/common \
+ -DGALLIUM_RBUG \
+ -DGALLIUM_TRACE \
+ -DGALLIUM_SOFTPIPE \
+ -D__NOT_HAVE_DRM_H
+
+dridir = $(DRI_DRIVER_INSTALL_DIR)
+dri_LTLIBRARIES = kms_swrast_dri.la
+
+nodist_EXTRA_kms_swrast_dri_la_SOURCES = dummy.cpp
+kms_swrast_dri_la_SOURCES = \
+ kms_swrast_drm_api.c \
+ $(top_srcdir)/src/mesa/drivers/dri/common/utils.c \
+ $(top_srcdir)/src/mesa/drivers/dri/common/dri_util.c \
+ $(top_srcdir)/src/mesa/drivers/dri/common/xmlconfig.c
+
+kms_swrast_dri_la_LDFLAGS = $(GALLIUM_DRI_LINKER_FLAGS)
+
+kms_swrast_dri_la_LIBADD = \
+ $(top_builddir)/src/gallium/state_trackers/dri/drm/libdridrm.la \
+ $(top_builddir)/src/gallium/winsys/sw/kms-dri/libswkmsdri.la \
+ $(top_builddir)/src/gallium/drivers/softpipe/libsoftpipe.la \
+ $(top_builddir)/src/gallium/drivers/trace/libtrace.la \
+ $(top_builddir)/src/gallium/drivers/rbug/librbug.la \
+ $(GALLIUM_DRI_LIB_DEPS)
+
+if HAVE_MESA_LLVM
+AM_CPPFLAGS += -DGALLIUM_LLVMPIPE
+kms_swrast_dri_la_LIBADD += $(top_builddir)/src/gallium/drivers/llvmpipe/libllvmpipe.la
+endif
+
+include $(top_srcdir)/install-gallium-links.mk
diff --git a/src/gallium/targets/dri-kms-swrast/kms_swrast_drm_api.c b/src/gallium/targets/dri-kms-swrast/kms_swrast_drm_api.c
new file mode 100644
index 0000000..10f891b
--- /dev/null
+++ b/src/gallium/targets/dri-kms-swrast/kms_swrast_drm_api.c
@@ -0,0 +1,65 @@
+/**************************************************************************
+ *
+ * Copyright 2009, VMware, Inc.
+ * All Rights Reserved.
+ * Copyright 2010 George Sapountzis <gsapountzis at gmail.com>
+ *
+ * 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 VMWARE 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/p_compiler.h"
+#include "util/u_memory.h"
+#include "kms_dri_sw_winsys.h"
+
+#include "target-helpers/inline_debug_helper.h"
+#include "target-helpers/inline_sw_helper.h"
+
+#include "state_tracker/drm_driver.h"
+
+static struct pipe_screen *
+drisw_create_dri2_screen(int fd)
+{
+ struct sw_winsys *winsys = NULL;
+ struct pipe_screen *screen = NULL;
+
+ winsys = kms_dri_create_winsys(fd);
+ if (winsys == NULL)
+ return NULL;
+
+ screen = sw_screen_create(winsys);
+ if (!screen)
+ goto fail;
+
+ screen = debug_screen_wrap(screen);
+
+ return screen;
+
+fail:
+ if (winsys)
+ winsys->destroy(winsys);
+
+ return NULL;
+}
+
+DRM_DRIVER_DESCRIPTOR("swrast", NULL, drisw_create_dri2_screen, NULL);
+
+/* vim: set sw=3 ts=8 sts=3 expandtab: */
diff --git a/src/gallium/winsys/Makefile.am b/src/gallium/winsys/Makefile.am
index 7d7a0b1..0260a2f 100644
--- a/src/gallium/winsys/Makefile.am
+++ b/src/gallium/winsys/Makefile.am
@@ -26,9 +26,14 @@ if NEED_WINSYS_XLIB
SUBDIRS += sw/xlib
endif
+if HAVE_GALLIUM_SOFTPIPE
if HAVE_DRISW
SUBDIRS += sw/dri
endif
+if HAVE_DRI2
+SUBDIRS += sw/kms-dri
+endif
+endif
if HAVE_EGL_PLATFORM_FBDEV
SUBDIRS += sw/fbdev
diff --git a/src/gallium/winsys/sw/kms-dri/Makefile.am b/src/gallium/winsys/sw/kms-dri/Makefile.am
new file mode 100644
index 0000000..237127c
--- /dev/null
+++ b/src/gallium/winsys/sw/kms-dri/Makefile.am
@@ -0,0 +1,33 @@
+# Copyright © 2012 Intel Corporation
+# 2013 Red Hat, Inc.
+#
+# 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, sublicense,
+# 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
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS 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 $(top_srcdir)/src/gallium/Automake.inc
+
+AM_CPPFLAGS = \
+ $(GALLIUM_CFLAGS) \
+ $(LIBDRM_CFLAGS)
+
+noinst_LTLIBRARIES = libswkmsdri.la
+
+libswkmsdri_la_SOURCES = kms_dri_sw_winsys.c
+libswkmsdri_la_LIBADD = $(LIBDRM_LIBS)
diff --git a/src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.c b/src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.c
new file mode 100644
index 0000000..b551cbf
--- /dev/null
+++ b/src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.c
@@ -0,0 +1,312 @@
+/**************************************************************************
+ *
+ * Copyright 2009, VMware, Inc.
+ * All Rights Reserved.
+ * Copyright 2010 George Sapountzis <gsapountzis at gmail.com>
+ * 2013 Red Hat, Inc.
+ *
+ * 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 VMWARE 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 <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+#include <limits.h>
+
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <dlfcn.h>
+#include <xf86drm.h>
+
+#include "pipe/p_compiler.h"
+#include "pipe/p_format.h"
+#include "util/u_inlines.h"
+#include "util/u_format.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+#include "util/u_double_list.h"
+
+#include "state_tracker/sw_winsys.h"
+#include "state_tracker/drm_driver.h"
+
+#if 0
+#define DEBUG(msg, ...) fprintf(stderr, msg, __VA_ARGS__)
+#else
+#define DEBUG(msg, ...)
+#endif
+
+struct sw_winsys;
+
+struct sw_winsys *kms_dri_create_winsys(int fd);
+
+struct kms_sw_displaytarget
+{
+ enum pipe_format format;
+ unsigned width;
+ unsigned height;
+ unsigned stride;
+ unsigned size;
+
+ uint32_t handle;
+ void *mapped;
+
+ int ref_count;
+ struct list_head link;
+};
+
+struct kms_sw_winsys
+{
+ struct sw_winsys base;
+
+ int fd;
+ struct list_head bo_list;
+};
+
+static INLINE struct kms_sw_displaytarget *
+kms_sw_displaytarget( struct sw_displaytarget *dt )
+{
+ return (struct kms_sw_displaytarget *)dt;
+}
+
+static INLINE struct kms_sw_winsys *
+kms_sw_winsys( struct sw_winsys *ws )
+{
+ return (struct kms_sw_winsys *)ws;
+}
+
+
+static boolean
+kms_sw_is_displaytarget_format_supported( struct sw_winsys *ws,
+ unsigned tex_usage,
+ enum pipe_format format )
+{
+ /* TODO: check visuals or other sensible thing here */
+ return TRUE;
+}
+
+static struct sw_displaytarget *
+kms_sw_displaytarget_create(struct sw_winsys *ws,
+ unsigned tex_usage,
+ enum pipe_format format,
+ unsigned width, unsigned height,
+ unsigned alignment,
+ unsigned *stride)
+{
+ struct kms_sw_winsys *kms_sw = kms_sw_winsys(ws);
+ struct kms_sw_displaytarget *kms_sw_dt;
+ struct drm_mode_create_dumb create_req;
+ struct drm_mode_destroy_dumb destroy_req;
+ int ret;
+
+ kms_sw_dt = CALLOC_STRUCT(kms_sw_displaytarget);
+ if(!kms_sw_dt)
+ goto no_dt;
+
+ kms_sw_dt->ref_count = 1;
+
+ kms_sw_dt->format = format;
+ kms_sw_dt->width = width;
+ kms_sw_dt->height = height;
+
+ create_req.bpp = 32;
+ create_req.width = width;
+ create_req.height = height;
+ create_req.handle = 0;
+ ret = drmIoctl(kms_sw->fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_req);
+ if (ret)
+ goto free_bo;
+
+ kms_sw_dt->stride = create_req.pitch;
+ kms_sw_dt->size = create_req.size;
+ kms_sw_dt->handle = create_req.handle;
+
+ list_add(&kms_sw_dt->link, &kms_sw->bo_list);
+
+ DEBUG("KMS-DEBUG: created buffer %u (size %u)\n", kms_sw_dt->handle, kms_sw_dt->size);
+
+ *stride = kms_sw_dt->stride;
+ return (struct sw_displaytarget *)kms_sw_dt;
+
+ free_bo:
+ memset(&destroy_req, 0, sizeof destroy_req);
+ destroy_req.handle = create_req.handle;
+ drmIoctl(kms_sw->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_req);
+ FREE(kms_sw_dt);
+ no_dt:
+ return NULL;
+}
+
+static void
+kms_sw_displaytarget_destroy(struct sw_winsys *ws,
+ struct sw_displaytarget *dt)
+{
+ struct kms_sw_winsys *kms_sw = kms_sw_winsys(ws);
+ struct kms_sw_displaytarget *kms_sw_dt = kms_sw_displaytarget(dt);
+ struct drm_mode_destroy_dumb destroy_req;
+
+ kms_sw_dt->ref_count --;
+ if (kms_sw_dt->ref_count > 0)
+ return;
+
+ memset(&destroy_req, 0, sizeof destroy_req);
+ destroy_req.handle = kms_sw_dt->handle;
+ drmIoctl(kms_sw->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_req);
+
+ list_del(&kms_sw_dt->link);
+
+ DEBUG("KMS-DEBUG: destroyed buffer %u\n", kms_sw_dt->handle);
+
+ FREE(kms_sw_dt);
+}
+
+static void *
+kms_sw_displaytarget_map(struct sw_winsys *ws,
+ struct sw_displaytarget *dt,
+ unsigned flags)
+{
+ struct kms_sw_winsys *kms_sw = kms_sw_winsys(ws);
+ struct kms_sw_displaytarget *kms_sw_dt = kms_sw_displaytarget(dt);
+ struct drm_mode_map_dumb map_req;
+ int prot, ret;
+
+ memset(&map_req, 0, sizeof map_req);
+ map_req.handle = kms_sw_dt->handle;
+ ret = drmIoctl(kms_sw->fd, DRM_IOCTL_MODE_MAP_DUMB, &map_req);
+ if (ret)
+ return NULL;
+
+ prot = (flags == PIPE_TRANSFER_READ) ? PROT_READ : (PROT_READ | PROT_WRITE);
+ kms_sw_dt->mapped = mmap(0, kms_sw_dt->size, prot, MAP_SHARED,
+ kms_sw->fd, map_req.offset);
+
+ if (kms_sw_dt->mapped == MAP_FAILED)
+ return NULL;
+
+ DEBUG("KMS-DEBUG: mapped buffer %u (size %u) at %p\n",
+ kms_sw_dt->handle, kms_sw_dt->size, kms_sw_dt->mapped);
+
+ return kms_sw_dt->mapped;
+}
+
+static void
+kms_sw_displaytarget_unmap(struct sw_winsys *ws,
+ struct sw_displaytarget *dt)
+{
+ struct kms_sw_displaytarget *kms_sw_dt = kms_sw_displaytarget(dt);
+
+ DEBUG("KMS-DEBUG: unmapped buffer %u (was %p)\n", kms_sw_dt->handle, kms_sw_dt->mapped);
+
+ munmap(kms_sw_dt->mapped, kms_sw_dt->size);
+ kms_sw_dt->mapped = NULL;
+}
+
+static struct sw_displaytarget *
+kms_sw_displaytarget_from_handle(struct sw_winsys *ws,
+ const struct pipe_resource *templ,
+ struct winsys_handle *whandle,
+ unsigned *stride)
+{
+ struct kms_sw_winsys *kms_sw = kms_sw_winsys(ws);
+ struct kms_sw_displaytarget *kms_sw_dt;
+
+ LIST_FOR_EACH_ENTRY(kms_sw_dt, &kms_sw->bo_list, link) {
+ if (kms_sw_dt->handle == whandle->handle) {
+ kms_sw_dt->ref_count++;
+
+ DEBUG("KMS-DEBUG: imported buffer %u (size %u)\n", kms_sw_dt->handle, kms_sw_dt->size);
+
+ *stride = kms_sw_dt->stride;
+ return (struct sw_displaytarget *)kms_sw_dt;
+ }
+ }
+
+ assert(0);
+ return NULL;
+}
+
+static boolean
+kms_sw_displaytarget_get_handle(struct sw_winsys *winsys,
+ struct sw_displaytarget *dt,
+ struct winsys_handle *whandle)
+{
+ struct kms_sw_displaytarget *kms_sw_dt = kms_sw_displaytarget(dt);
+
+ assert(whandle->type == DRM_API_HANDLE_TYPE_SHARED);
+ whandle->handle = kms_sw_dt->handle;
+ whandle->stride = kms_sw_dt->stride;
+ return TRUE;
+}
+
+static void
+kms_sw_displaytarget_display(struct sw_winsys *ws,
+ struct sw_displaytarget *dt,
+ void *context_private,
+ struct pipe_box *box)
+{
+ /* This function should not be called, instead the dri2 loader should
+ handle swap buffers internally.
+ */
+ assert(0);
+}
+
+
+static void
+kms_destroy_sw_winsys(struct sw_winsys *winsys)
+{
+ FREE(winsys);
+}
+
+struct sw_winsys *
+kms_dri_create_winsys(int fd)
+{
+ struct kms_sw_winsys *ws;
+
+ ws = CALLOC_STRUCT(kms_sw_winsys);
+ if (!ws)
+ return NULL;
+
+ ws->fd = fd;
+ list_inithead(&ws->bo_list);
+
+ ws->base.destroy = kms_destroy_sw_winsys;
+
+ ws->base.is_displaytarget_format_supported = kms_sw_is_displaytarget_format_supported;
+
+ /* screen texture functions */
+ ws->base.displaytarget_create = kms_sw_displaytarget_create;
+ ws->base.displaytarget_destroy = kms_sw_displaytarget_destroy;
+ ws->base.displaytarget_from_handle = kms_sw_displaytarget_from_handle;
+ ws->base.displaytarget_get_handle = kms_sw_displaytarget_get_handle;
+
+ /* texture functions */
+ ws->base.displaytarget_map = kms_sw_displaytarget_map;
+ ws->base.displaytarget_unmap = kms_sw_displaytarget_unmap;
+
+ ws->base.displaytarget_display = kms_sw_displaytarget_display;
+
+ return &ws->base;
+}
+
+/* vim: set sw=3 ts=8 sts=3 expandtab: */
diff --git a/src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.h b/src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.h
new file mode 100644
index 0000000..e276a72
--- /dev/null
+++ b/src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.h
@@ -0,0 +1,37 @@
+/**************************************************************************
+ *
+ * Copyright 2009, VMware, Inc.
+ * All Rights Reserved.
+ * Copyright 2010 George Sapountzis <gsapountzis at gmail.com>
+ * 2013 Red Hat, Inc.
+ *
+ * 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 VMWARE 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 KMS_DRI_SW_WINSYS
+#define KMS_DRI_SW_WINSYS
+
+struct sw_winsys;
+
+struct sw_winsys *kms_dri_create_winsys(int fd);
+
+#endif
diff --git a/src/gbm/backends/dri/gbm_dri.c b/src/gbm/backends/dri/gbm_dri.c
index 8896a37..501c8b8 100644
--- a/src/gbm/backends/dri/gbm_dri.c
+++ b/src/gbm/backends/dri/gbm_dri.c
@@ -364,12 +364,13 @@ dri_load_driver(struct gbm_dri_device *dri)
}
static int
-dri_screen_create(struct gbm_dri_device *dri)
+dri_screen_create_dri2(struct gbm_dri_device *dri,
+ const char *driver_name)
{
const __DRIextension **extensions;
int ret = 0;
- dri->base.driver_name = loader_get_driver_for_fd(dri->base.base.fd, 0);
+ dri->base.driver_name = driver_name;
if (dri->base.driver_name == NULL)
return -1;
@@ -420,7 +421,6 @@ dri_screen_create_swrast(struct gbm_dri_device *dri)
int ret = 0;
dri->base.driver_name = "swrast";
-
ret = dri_load_driver(dri);
if (ret) {
fprintf(stderr, "failed to load swrast driver\n");
@@ -448,6 +448,27 @@ dri_screen_create_swrast(struct gbm_dri_device *dri)
}
static int
+dri_screen_create(struct gbm_dri_device *dri)
+{
+ const char *driver_name;
+
+ driver_name = loader_get_driver_for_fd(dri->base.base.fd, 0);
+ return dri_screen_create_dri2(dri, driver_name);
+}
+
+static int
+dri_screen_create_sw(struct gbm_dri_device *dri)
+{
+ int ret;
+
+ ret = dri_screen_create_dri2(dri, "kms_swrast");
+ if (ret == 0)
+ return ret;
+
+ return dri_screen_create_swrast(dri);
+}
+
+static int
gbm_dri_is_format_supported(struct gbm_device *gbm,
uint32_t format,
uint32_t usage)
@@ -913,9 +934,9 @@ dri_device_create(int fd)
if (!force_sw) {
ret = dri_screen_create(dri);
if (!ret)
- ret = dri_screen_create_swrast(dri);
+ ret = dri_screen_create_sw(dri);
} else {
- ret = dri_screen_create_swrast(dri);
+ ret = dri_screen_create_sw(dri);
}
if (ret)
--
1.9.3
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