1 /* 2 * Mesa 3-D graphics library 3 * Version: 7.11 4 * 5 * Copyright (C) 2011 Benjamin Franzke <benjaminfranzke (at) googlemail.com> 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included 15 * in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 23 * DEALINGS IN THE SOFTWARE. 24 */ 25 26 #include <stdlib.h> 27 #include <sys/types.h> 28 #include <sys/mman.h> 29 #include <unistd.h> 30 31 #include "pipe/p_compiler.h" 32 #include "pipe/p_defines.h" 33 #include "pipe/p_state.h" 34 #include "util/u_format.h" 35 #include "util/u_math.h" 36 #include "util/u_memory.h" 37 #include "state_tracker/sw_winsys.h" 38 39 #include <wayland-client.h> 40 #include "wayland_sw_winsys.h" 41 42 struct wayland_sw_displaytarget 43 { 44 int fd; 45 unsigned size; 46 47 unsigned width; 48 unsigned height; 49 unsigned stride; 50 51 enum pipe_format format; 52 53 void *map; 54 unsigned map_count; 55 }; 56 57 struct wayland_sw_winsys 58 { 59 struct sw_winsys base; 60 61 struct wl_display *display; 62 }; 63 64 static INLINE struct wayland_sw_displaytarget * 65 wayland_sw_displaytarget(struct sw_displaytarget *dt) 66 { 67 return (struct wayland_sw_displaytarget *) dt; 68 } 69 70 static INLINE struct wayland_sw_winsys * 71 wayland_sw_winsys(struct sw_winsys *ws) 72 { 73 return (struct wayland_sw_winsys *) ws; 74 } 75 76 static void 77 wayland_displaytarget_display(struct sw_winsys *ws, 78 struct sw_displaytarget *dt, 79 void *context_private) 80 { 81 } 82 83 static void 84 wayland_displaytarget_unmap(struct sw_winsys *ws, 85 struct sw_displaytarget *dt) 86 { 87 struct wayland_sw_displaytarget *wldt = wayland_sw_displaytarget(dt); 88 89 wldt->map_count--; 90 if (wldt->map_count > 0) 91 return; 92 93 munmap(wldt->map, wldt->size); 94 wldt->map = NULL; 95 } 96 97 static void * 98 wayland_displaytarget_map(struct sw_winsys *ws, 99 struct sw_displaytarget *dt, 100 unsigned flags) 101 { 102 struct wayland_sw_displaytarget *wldt = wayland_sw_displaytarget(dt); 103 uint mmap_flags = 0; 104 105 if (wldt->map) { 106 wldt->map_count++; 107 return wldt->map; 108 } 109 110 if (flags & PIPE_TRANSFER_READ) 111 mmap_flags |= PROT_READ; 112 if (flags & PIPE_TRANSFER_WRITE) 113 mmap_flags |= PROT_WRITE; 114 115 wldt->map = mmap(NULL, wldt->size, mmap_flags, 116 MAP_SHARED, wldt->fd, 0); 117 118 if (wldt->map == MAP_FAILED) 119 return NULL; 120 121 wldt->map_count = 1; 122 123 return wldt->map; 124 } 125 126 static void 127 wayland_displaytarget_destroy(struct sw_winsys *ws, 128 struct sw_displaytarget *dt) 129 { 130 struct wayland_sw_displaytarget *wldt = wayland_sw_displaytarget(dt); 131 132 if (wldt->map) 133 wayland_displaytarget_unmap(ws, dt); 134 135 FREE(wldt); 136 } 137 138 static boolean 139 wayland_is_displaytarget_format_supported(struct sw_winsys *ws, 140 unsigned tex_usage, 141 enum pipe_format format) 142 { 143 switch (format) { 144 case PIPE_FORMAT_B8G8R8X8_UNORM: 145 case PIPE_FORMAT_B8G8R8A8_UNORM: 146 return TRUE; 147 default: 148 return FALSE; 149 } 150 } 151 152 static struct sw_displaytarget * 153 wayland_displaytarget_create(struct sw_winsys *ws, 154 unsigned tex_usage, 155 enum pipe_format format, 156 unsigned width, unsigned height, 157 unsigned alignment, 158 unsigned *stride) 159 { 160 struct wayland_sw_displaytarget *wldt; 161 unsigned nblocksy, format_stride; 162 char filename[] = "/tmp/wayland-shm-XXXXXX"; 163 164 if (!wayland_is_displaytarget_format_supported(ws, tex_usage, format)) 165 return NULL; 166 167 wldt = CALLOC_STRUCT(wayland_sw_displaytarget); 168 if (!wldt) 169 return NULL; 170 171 wldt->map = NULL; 172 173 wldt->format = format; 174 wldt->width = width; 175 wldt->height = height; 176 177 format_stride = util_format_get_stride(format, width); 178 wldt->stride = align(format_stride, alignment); 179 180 nblocksy = util_format_get_nblocksy(format, height); 181 wldt->size = wldt->stride * nblocksy; 182 183 wldt->fd = mkstemp(filename); 184 if (wldt->fd < 0) { 185 FREE(wldt); 186 return NULL; 187 } 188 189 if (ftruncate(wldt->fd, wldt->size) < 0) { 190 unlink(filename); 191 close(wldt->fd); 192 FREE(wldt); 193 return NULL; 194 } 195 196 unlink(filename); 197 198 *stride = wldt->stride; 199 200 return (struct sw_displaytarget *) wldt; 201 } 202 203 static struct sw_displaytarget * 204 wayland_displaytarget_from_handle(struct sw_winsys *ws, 205 const struct pipe_resource *templet, 206 struct winsys_handle *whandle, 207 unsigned *stride) 208 { 209 struct wayland_sw_displaytarget *wldt; 210 unsigned nblocksy; 211 212 if (!wayland_is_displaytarget_format_supported(ws, 0, templet->format)) 213 return NULL; 214 215 wldt = CALLOC_STRUCT(wayland_sw_displaytarget); 216 if (!wldt) 217 return NULL; 218 219 wldt->fd = whandle->fd; 220 wldt->stride = whandle->stride; 221 wldt->width = templet->width0; 222 wldt->height = templet->height0; 223 wldt->format = templet->format; 224 225 nblocksy = util_format_get_nblocksy(wldt->format, wldt->height); 226 227 wldt->size = wldt->stride * nblocksy; 228 229 wldt->map = NULL; 230 231 *stride = wldt->stride; 232 233 return (struct sw_displaytarget *) wldt; 234 } 235 236 237 static boolean 238 wayland_displaytarget_get_handle(struct sw_winsys *ws, 239 struct sw_displaytarget *dt, 240 struct winsys_handle *whandle) 241 { 242 struct wayland_sw_displaytarget *wldt = wayland_sw_displaytarget(dt); 243 244 whandle->fd = wldt->fd; 245 whandle->stride = wldt->stride; 246 whandle->size = wldt->size; 247 248 return TRUE; 249 } 250 251 static void 252 wayland_destroy(struct sw_winsys *ws) 253 { 254 struct wayland_sw_winsys *wayland = wayland_sw_winsys(ws); 255 256 FREE(wayland); 257 } 258 259 struct sw_winsys * 260 wayland_create_sw_winsys(struct wl_display *display) 261 { 262 struct wayland_sw_winsys *wlws; 263 264 wlws = CALLOC_STRUCT(wayland_sw_winsys); 265 if (!wlws) 266 return NULL; 267 268 wlws->display = display; 269 270 wlws->base.destroy = wayland_destroy; 271 wlws->base.is_displaytarget_format_supported = 272 wayland_is_displaytarget_format_supported; 273 274 wlws->base.displaytarget_create = wayland_displaytarget_create; 275 wlws->base.displaytarget_from_handle = wayland_displaytarget_from_handle; 276 wlws->base.displaytarget_get_handle = wayland_displaytarget_get_handle; 277 wlws->base.displaytarget_destroy = wayland_displaytarget_destroy; 278 wlws->base.displaytarget_map = wayland_displaytarget_map; 279 wlws->base.displaytarget_unmap = wayland_displaytarget_unmap; 280 281 wlws->base.displaytarget_display = wayland_displaytarget_display; 282 283 return &wlws->base; 284 } 285 286 /* vim: set sw=3 ts=8 sts=3 expandtab: */ 287
