1 /* 2 * qxl local rendering (aka display on sdl/vnc) 3 * 4 * Copyright (C) 2010 Red Hat, Inc. 5 * 6 * maintained by Gerd Hoffmann <kraxel@redhat.com> 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 or 11 * (at your option) version 3 of the License. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, see <http://www.gnu.org/licenses/>. 20 */ 21 22 #include "qemu/osdep.h" 23 #include "qxl.h" 24 #include "sysemu/runstate.h" 25 #include "trace.h" 26 27 static void qxl_blit(PCIQXLDevice *qxl, QXLRect *rect) 28 { 29 DisplaySurface *surface = qemu_console_surface(qxl->vga.con); 30 uint8_t *dst = surface_data(surface); 31 uint8_t *src; 32 int len, i; 33 34 if (is_buffer_shared(surface)) { 35 return; 36 } 37 trace_qxl_render_blit(qxl->guest_primary.qxl_stride, 38 rect->left, rect->right, rect->top, rect->bottom); 39 src = qxl->guest_primary.data; 40 if (qxl->guest_primary.qxl_stride < 0) { 41 /* qxl surface is upside down, walk src scanlines 42 * in reverse order to flip it */ 43 src += (qxl->guest_primary.surface.height - rect->top - 1) * 44 qxl->guest_primary.abs_stride; 45 } else { 46 src += rect->top * qxl->guest_primary.abs_stride; 47 } 48 dst += rect->top * qxl->guest_primary.abs_stride; 49 src += rect->left * qxl->guest_primary.bytes_pp; 50 dst += rect->left * qxl->guest_primary.bytes_pp; 51 len = (rect->right - rect->left) * qxl->guest_primary.bytes_pp; 52 53 for (i = rect->top; i < rect->bottom; i++) { 54 memcpy(dst, src, len); 55 dst += qxl->guest_primary.abs_stride; 56 src += qxl->guest_primary.qxl_stride; 57 } 58 } 59 60 void qxl_render_resize(PCIQXLDevice *qxl) 61 { 62 QXLSurfaceCreate *sc = &qxl->guest_primary.surface; 63 64 qxl->guest_primary.qxl_stride = sc->stride; 65 qxl->guest_primary.abs_stride = abs(sc->stride); 66 qxl->guest_primary.resized++; 67 switch (sc->format) { 68 case SPICE_SURFACE_FMT_16_555: 69 qxl->guest_primary.bytes_pp = 2; 70 qxl->guest_primary.bits_pp = 15; 71 break; 72 case SPICE_SURFACE_FMT_16_565: 73 qxl->guest_primary.bytes_pp = 2; 74 qxl->guest_primary.bits_pp = 16; 75 break; 76 case SPICE_SURFACE_FMT_32_xRGB: 77 case SPICE_SURFACE_FMT_32_ARGB: 78 qxl->guest_primary.bytes_pp = 4; 79 qxl->guest_primary.bits_pp = 32; 80 break; 81 default: 82 fprintf(stderr, "%s: unhandled format: %x\n", __func__, 83 qxl->guest_primary.surface.format); 84 qxl->guest_primary.bytes_pp = 4; 85 qxl->guest_primary.bits_pp = 32; 86 break; 87 } 88 } 89 90 static void qxl_set_rect_to_surface(PCIQXLDevice *qxl, QXLRect *area) 91 { 92 area->left = 0; 93 area->right = qxl->guest_primary.surface.width; 94 area->top = 0; 95 area->bottom = qxl->guest_primary.surface.height; 96 } 97 98 static void qxl_render_update_area_unlocked(PCIQXLDevice *qxl) 99 { 100 VGACommonState *vga = &qxl->vga; 101 DisplaySurface *surface; 102 int width = qxl->guest_head0_width ?: qxl->guest_primary.surface.width; 103 int height = qxl->guest_head0_height ?: qxl->guest_primary.surface.height; 104 int i; 105 106 if (qxl->guest_primary.resized) { 107 qxl->guest_primary.resized = 0; 108 qxl->guest_primary.data = qxl_phys2virt(qxl, 109 qxl->guest_primary.surface.mem, 110 MEMSLOT_GROUP_GUEST); 111 if (!qxl->guest_primary.data) { 112 goto end; 113 } 114 qxl_set_rect_to_surface(qxl, &qxl->dirty[0]); 115 qxl->num_dirty_rects = 1; 116 trace_qxl_render_guest_primary_resized( 117 width, 118 height, 119 qxl->guest_primary.qxl_stride, 120 qxl->guest_primary.bytes_pp, 121 qxl->guest_primary.bits_pp); 122 if (qxl->guest_primary.qxl_stride > 0) { 123 pixman_format_code_t format = 124 qemu_default_pixman_format(qxl->guest_primary.bits_pp, true); 125 surface = qemu_create_displaysurface_from 126 (width, 127 height, 128 format, 129 qxl->guest_primary.abs_stride, 130 qxl->guest_primary.data); 131 } else { 132 surface = qemu_create_displaysurface 133 (width, 134 height); 135 } 136 dpy_gfx_replace_surface(vga->con, surface); 137 } 138 139 if (!qxl->guest_primary.data) { 140 goto end; 141 } 142 for (i = 0; i < qxl->num_dirty_rects; i++) { 143 if (qemu_spice_rect_is_empty(qxl->dirty+i)) { 144 break; 145 } 146 if (qxl->dirty[i].left < 0 || 147 qxl->dirty[i].top < 0 || 148 qxl->dirty[i].left > qxl->dirty[i].right || 149 qxl->dirty[i].top > qxl->dirty[i].bottom || 150 qxl->dirty[i].right > width || 151 qxl->dirty[i].bottom > height) { 152 continue; 153 } 154 qxl_blit(qxl, qxl->dirty+i); 155 dpy_gfx_update(vga->con, 156 qxl->dirty[i].left, qxl->dirty[i].top, 157 qxl->dirty[i].right - qxl->dirty[i].left, 158 qxl->dirty[i].bottom - qxl->dirty[i].top); 159 } 160 qxl->num_dirty_rects = 0; 161 162 end: 163 if (qxl->render_update_cookie_num == 0) { 164 graphic_hw_update_done(qxl->ssd.dcl.con); 165 } 166 } 167 168 /* 169 * use ssd.lock to protect render_update_cookie_num. 170 * qxl_render_update is called by io thread or vcpu thread, and the completion 171 * callbacks are called by spice_server thread, deferring to bh called from the 172 * io thread. 173 */ 174 void qxl_render_update(PCIQXLDevice *qxl) 175 { 176 QXLCookie *cookie; 177 178 qemu_mutex_lock(&qxl->ssd.lock); 179 180 if (!runstate_is_running() || !qxl->guest_primary.commands || 181 qxl->mode == QXL_MODE_UNDEFINED) { 182 qxl_render_update_area_unlocked(qxl); 183 qemu_mutex_unlock(&qxl->ssd.lock); 184 graphic_hw_update_done(qxl->ssd.dcl.con); 185 return; 186 } 187 188 qxl->guest_primary.commands = 0; 189 qxl->render_update_cookie_num++; 190 qemu_mutex_unlock(&qxl->ssd.lock); 191 cookie = qxl_cookie_new(QXL_COOKIE_TYPE_RENDER_UPDATE_AREA, 192 0); 193 qxl_set_rect_to_surface(qxl, &cookie->u.render.area); 194 qxl_spice_update_area(qxl, 0, &cookie->u.render.area, NULL, 195 0, 1 /* clear_dirty_region */, QXL_ASYNC, cookie); 196 } 197 198 void qxl_render_update_area_bh(void *opaque) 199 { 200 PCIQXLDevice *qxl = opaque; 201 202 qemu_mutex_lock(&qxl->ssd.lock); 203 qxl_render_update_area_unlocked(qxl); 204 qemu_mutex_unlock(&qxl->ssd.lock); 205 } 206 207 void qxl_render_update_area_done(PCIQXLDevice *qxl, QXLCookie *cookie) 208 { 209 qemu_mutex_lock(&qxl->ssd.lock); 210 trace_qxl_render_update_area_done(cookie); 211 qemu_bh_schedule(qxl->update_area_bh); 212 qxl->render_update_cookie_num--; 213 qemu_mutex_unlock(&qxl->ssd.lock); 214 g_free(cookie); 215 } 216 217 static void qxl_unpack_chunks(void *dest, size_t size, PCIQXLDevice *qxl, 218 QXLDataChunk *chunk, uint32_t group_id) 219 { 220 uint32_t max_chunks = 32; 221 size_t offset = 0; 222 size_t bytes; 223 224 for (;;) { 225 bytes = MIN(size - offset, chunk->data_size); 226 memcpy(dest + offset, chunk->data, bytes); 227 offset += bytes; 228 if (offset == size) { 229 return; 230 } 231 chunk = qxl_phys2virt(qxl, chunk->next_chunk, group_id); 232 if (!chunk) { 233 return; 234 } 235 max_chunks--; 236 if (max_chunks == 0) { 237 return; 238 } 239 } 240 } 241 242 static QEMUCursor *qxl_cursor(PCIQXLDevice *qxl, QXLCursor *cursor, 243 uint32_t group_id) 244 { 245 QEMUCursor *c; 246 uint8_t *and_mask, *xor_mask; 247 size_t size; 248 249 c = cursor_alloc(cursor->header.width, cursor->header.height); 250 c->hot_x = cursor->header.hot_spot_x; 251 c->hot_y = cursor->header.hot_spot_y; 252 switch (cursor->header.type) { 253 case SPICE_CURSOR_TYPE_MONO: 254 /* Assume that the full cursor is available in a single chunk. */ 255 size = 2 * cursor_get_mono_bpl(c) * c->height; 256 if (size != cursor->data_size) { 257 fprintf(stderr, "%s: bad monochrome cursor %ux%u with size %u\n", 258 __func__, c->width, c->height, cursor->data_size); 259 goto fail; 260 } 261 and_mask = cursor->chunk.data; 262 xor_mask = and_mask + cursor_get_mono_bpl(c) * c->height; 263 cursor_set_mono(c, 0xffffff, 0x000000, xor_mask, 1, and_mask); 264 if (qxl->debug > 2) { 265 cursor_print_ascii_art(c, "qxl/mono"); 266 } 267 break; 268 case SPICE_CURSOR_TYPE_ALPHA: 269 size = sizeof(uint32_t) * cursor->header.width * cursor->header.height; 270 qxl_unpack_chunks(c->data, size, qxl, &cursor->chunk, group_id); 271 if (qxl->debug > 2) { 272 cursor_print_ascii_art(c, "qxl/alpha"); 273 } 274 break; 275 default: 276 fprintf(stderr, "%s: not implemented: type %d\n", 277 __func__, cursor->header.type); 278 goto fail; 279 } 280 return c; 281 282 fail: 283 cursor_put(c); 284 return NULL; 285 } 286 287 288 /* called from spice server thread context only */ 289 int qxl_render_cursor(PCIQXLDevice *qxl, QXLCommandExt *ext) 290 { 291 QXLCursorCmd *cmd = qxl_phys2virt(qxl, ext->cmd.data, ext->group_id); 292 QXLCursor *cursor; 293 QEMUCursor *c; 294 295 if (!cmd) { 296 return 1; 297 } 298 299 if (!dpy_cursor_define_supported(qxl->vga.con)) { 300 return 0; 301 } 302 303 if (qxl->debug > 1 && cmd->type != QXL_CURSOR_MOVE) { 304 fprintf(stderr, "%s", __func__); 305 qxl_log_cmd_cursor(qxl, cmd, ext->group_id); 306 fprintf(stderr, "\n"); 307 } 308 switch (cmd->type) { 309 case QXL_CURSOR_SET: 310 cursor = qxl_phys2virt(qxl, cmd->u.set.shape, ext->group_id); 311 if (!cursor) { 312 return 1; 313 } 314 c = qxl_cursor(qxl, cursor, ext->group_id); 315 if (c == NULL) { 316 c = cursor_builtin_left_ptr(); 317 } 318 qemu_mutex_lock(&qxl->ssd.lock); 319 if (qxl->ssd.cursor) { 320 cursor_put(qxl->ssd.cursor); 321 } 322 qxl->ssd.cursor = c; 323 qxl->ssd.mouse_x = cmd->u.set.position.x; 324 qxl->ssd.mouse_y = cmd->u.set.position.y; 325 qemu_mutex_unlock(&qxl->ssd.lock); 326 qemu_bh_schedule(qxl->ssd.cursor_bh); 327 break; 328 case QXL_CURSOR_MOVE: 329 qemu_mutex_lock(&qxl->ssd.lock); 330 qxl->ssd.mouse_x = cmd->u.position.x; 331 qxl->ssd.mouse_y = cmd->u.position.y; 332 qemu_mutex_unlock(&qxl->ssd.lock); 333 qemu_bh_schedule(qxl->ssd.cursor_bh); 334 break; 335 } 336 return 0; 337 } 338