winsys: Add wayland shm sw winsys

configure.ac

@@ -1636,6 +1636,7 @@ yes)
 		PKG_CHECK_MODULES([WAYLAND], [wayland-client wayland-server],, \
 				  [AC_MSG_ERROR([cannot find libwayland-client])])
 		WAYLAND_EGL_LIB_DEPS="$WAYLAND_LIBS $LIBDRM_LIBS"
+                GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS sw/wayland"
 	fi
     done
     EGL_PLATFORMS="$egl_platforms"

src/gallium/winsys/sw/Makefile

@@ -14,6 +14,10 @@ ifneq ($(findstring fbdev, $(EGL_PLATFORMS)),)
 SUBDIRS += fbdev
 endif
 
+ifneq ($(findstring wayland, $(EGL_PLATFORMS)),)
+SUBDIRS += wayland
+endif
+
 default install clean:
 	@for dir in $(SUBDIRS) ; do \
 		if [ -d $$dir ] ; then \

src/gallium/winsys/sw/wayland/Makefile

@@ -0,0 +1,13 @@
+TOP = ../../../../..
+include $(TOP)/configs/current
+
+LIBNAME = ws_wayland
+
+LIBRARY_INCLUDES = $(WALAND_CFLAGS)
+
+LIBRARY_DEFINES =
+
+C_SOURCES = \
+	wayland_sw_winsys.c
+
+include ../../../Makefile.template

src/gallium/winsys/sw/wayland/wayland_sw_winsys.c

@@ -0,0 +1,285 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.11
+ *
+ * Copyright (C) 2011 Benjamin Franzke <benjaminfranzke@googlemail.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, 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 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 <stdlib.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <unistd.h>
+
+#include "pipe/p_compiler.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_state.h"
+#include "util/u_format.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+#include "state_tracker/sw_winsys.h"
+
+#include <wayland-client.h>
+#include "wayland_sw_winsys.h"
+
+struct wayland_sw_displaytarget
+{
+   int fd;
+   unsigned size;
+
+   unsigned width;
+   unsigned height;
+   unsigned stride;
+
+   enum pipe_format format;
+
+   void *map;
+   unsigned map_count;
+};
+
+struct wayland_sw_winsys
+{
+   struct sw_winsys base;
+
+   struct wl_display *display;
+};
+
+static INLINE struct wayland_sw_displaytarget *
+wayland_sw_displaytarget(struct sw_displaytarget *dt)
+{
+   return (struct wayland_sw_displaytarget *) dt;
+}
+
+static INLINE struct wayland_sw_winsys *
+wayland_sw_winsys(struct sw_winsys *ws)
+{
+   return (struct wayland_sw_winsys *) ws;
+}
+
+static void
+wayland_displaytarget_display(struct sw_winsys *ws,
+                              struct sw_displaytarget *dt,
+                              void *context_private)
+{
+}
+
+static void
+wayland_displaytarget_unmap(struct sw_winsys *ws,
+                            struct sw_displaytarget *dt)
+{
+   struct wayland_sw_displaytarget *wldt = wayland_sw_displaytarget(dt);
+
+   wldt->map_count--;
+   if (wldt->map_count > 0)
+      return;
+
+   munmap(wldt->map, wldt->size);
+   wldt->map = NULL;
+}
+
+static void *
+wayland_displaytarget_map(struct sw_winsys *ws,
+                          struct sw_displaytarget *dt,
+                          unsigned flags)
+{
+   struct wayland_sw_displaytarget *wldt = wayland_sw_displaytarget(dt);
+   uint mmap_flags = 0;
+
+   if (wldt->map) {
+      wldt->map_count++;
+      return wldt->map;
+   }
+
+   if (flags & PIPE_TRANSFER_READ)
+      mmap_flags |= PROT_READ;
+   if (flags & PIPE_TRANSFER_WRITE)
+      mmap_flags |= PROT_WRITE;
+
+   wldt->map = mmap(NULL, wldt->size, mmap_flags,
+                    MAP_SHARED, wldt->fd, 0);
+
+   if (wldt->map == MAP_FAILED)
+      return NULL;
+
+   wldt->map_count = 1;
+
+   return wldt->map;
+}
+
+static void
+wayland_displaytarget_destroy(struct sw_winsys *ws,
+                              struct sw_displaytarget *dt)
+{
+   struct wayland_sw_displaytarget *wldt = wayland_sw_displaytarget(dt);
+
+   if (wldt->map)
+      wayland_displaytarget_unmap(ws, dt);
+
+   FREE(wldt);
+}
+
+static boolean
+wayland_is_displaytarget_format_supported(struct sw_winsys *ws,
+                                          unsigned tex_usage,
+                                          enum pipe_format format)
+{
+   switch (format) {
+   case PIPE_FORMAT_B8G8R8X8_UNORM:
+   case PIPE_FORMAT_B8G8R8A8_UNORM:
+      return TRUE;
+   default:
+      return FALSE;
+   }
+}
+
+static struct sw_displaytarget *
+wayland_displaytarget_create(struct sw_winsys *ws,
+                             unsigned tex_usage,
+                             enum pipe_format format,
+                             unsigned width, unsigned height,
+                             unsigned alignment,
+                             unsigned *stride)
+{
+   struct wayland_sw_displaytarget *wldt;
+   unsigned nblocksy, format_stride;
+   char filename[] = "/tmp/wayland-shm-XXXXXX";
+
+   if (!wayland_is_displaytarget_format_supported(ws, tex_usage, format))
+      return NULL;
+
+   wldt = CALLOC_STRUCT(wayland_sw_displaytarget);
+   if (!wldt)
+      return NULL;
+
+   wldt->map = NULL;
+
+   wldt->format = format;
+   wldt->width = width;
+   wldt->height = height;
+
+   format_stride = util_format_get_stride(format, width);
+   wldt->stride = align(format_stride, alignment);
+
+   nblocksy = util_format_get_nblocksy(format, height);
+   wldt->size = wldt->stride * nblocksy;
+
+   wldt->fd = mkstemp(filename);
+   if (wldt->fd < 0) {
+      FREE(wldt);
+      return NULL;
+   }
+
+   if (ftruncate(wldt->fd, wldt->size) < 0) {
+      unlink(filename);
+      close(wldt->fd);
+      FREE(wldt);
+      return NULL;
+   }
+
+   unlink(filename);
+
+   *stride = wldt->stride;
+
+   return (struct sw_displaytarget *) wldt;
+}
+
+static struct sw_displaytarget *
+wayland_displaytarget_from_handle(struct sw_winsys *ws,
+                                  const struct pipe_resource *templet,
+                                  struct winsys_handle *whandle,
+                                  unsigned *stride)
+{
+   struct wayland_sw_displaytarget *wldt;
+   unsigned nblocksy;
+
+   if (!wayland_is_displaytarget_format_supported(ws, 0, templet->format))
+      return NULL;
+
+   wldt = CALLOC_STRUCT(wayland_sw_displaytarget);
+   if (!wldt)
+      return NULL;
+ 
+   wldt->fd = whandle->fd;
+   wldt->stride = whandle->stride;
+   wldt->width = templet->width0;
+   wldt->height = templet->height0;
+   wldt->format = templet->format;
+
+   nblocksy = util_format_get_nblocksy(wldt->format, wldt->height);
+
+   wldt->size = wldt->stride * nblocksy;
+
+   wldt->map = NULL;
+
+   *stride = wldt->stride;
+
+   return (struct sw_displaytarget *) wldt;
+}
+
+
+static boolean
+wayland_displaytarget_get_handle(struct sw_winsys *ws,
+                                 struct sw_displaytarget *dt,
+                                 struct winsys_handle *whandle)
+{
+   struct wayland_sw_displaytarget *wldt = wayland_sw_displaytarget(dt);
+
+   whandle->fd = wldt->fd;
+   whandle->stride = wldt->stride;
+
+   return TRUE;
+}
+
+static void
+wayland_destroy(struct sw_winsys *ws)
+{
+   struct wayland_sw_winsys *wayland = wayland_sw_winsys(ws);
+
+   FREE(wayland);
+}
+
+struct sw_winsys *
+wayland_create_sw_winsys(struct wl_display *display)
+{
+   struct wayland_sw_winsys *wlws;
+
+   wlws = CALLOC_STRUCT(wayland_sw_winsys);
+   if (!wlws)
+      return NULL;
+
+   wlws->display = display;
+
+   wlws->base.destroy = wayland_destroy;
+   wlws->base.is_displaytarget_format_supported =
+      wayland_is_displaytarget_format_supported;
+
+   wlws->base.displaytarget_create = wayland_displaytarget_create;
+   wlws->base.displaytarget_from_handle = wayland_displaytarget_from_handle;
+   wlws->base.displaytarget_get_handle = wayland_displaytarget_get_handle;
+   wlws->base.displaytarget_destroy = wayland_displaytarget_destroy;
+   wlws->base.displaytarget_map = wayland_displaytarget_map;
+   wlws->base.displaytarget_unmap = wayland_displaytarget_unmap;
+
+   wlws->base.displaytarget_display = wayland_displaytarget_display;
+
+   return &wlws->base;
+}
+
+/* vim: set sw=3 ts=8 sts=3 expandtab: */

src/gallium/winsys/sw/wayland/wayland_sw_winsys.h

@@ -0,0 +1,41 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.11
+ *
+ * Copyright (C) 2011 Benjamin Franzke <benjaminfranzke@googlemail.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, 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 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.
+ */
+
+#ifndef WAYLAND_SW_WINSYS
+#define WAYLAND_SW_WINSYS
+
+struct sw_winsys;
+
+struct winsys_handle {
+   int fd;
+   unsigned stride;
+};
+
+struct sw_winsys *
+wayland_create_sw_winsys(struct wl_display *display);
+
+#endif /* WAYLAND_SW_WINSYS */
+
+/* vim: set sw=3 ts=8 sts=3 expandtab: */