hw/qxl-render.c

   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 "qxl.h"
  23
  24 static void qxl_flip(PCIQXLDevice *qxl, QXLRect *rect)
  25 {
  26     uint8_t *src = qxl->guest_primary.data;
  27     uint8_t *dst = qxl->guest_primary.flipped;
  28     int len, i;
  29
  30     src += (qxl->guest_primary.surface.height - rect->top - 1) *
  31         qxl->guest_primary.abs_stride;
  32     dst += rect->top  * qxl->guest_primary.abs_stride;
  33     src += rect->left * qxl->guest_primary.bytes_pp;
  34     dst += rect->left * qxl->guest_primary.bytes_pp;
  35     len  = (rect->right - rect->left) * qxl->guest_primary.bytes_pp;
  36
  37     for (i = rect->top; i < rect->bottom; i++) {
  38         memcpy(dst, src, len);
  39         dst += qxl->guest_primary.abs_stride;
  40         src -= qxl->guest_primary.abs_stride;
  41     }
  42 }
  43
  44 void qxl_render_resize(PCIQXLDevice *qxl)
  45 {
  46     QXLSurfaceCreate *sc = &qxl->guest_primary.surface;
  47
  48     qxl->guest_primary.qxl_stride = sc->stride;
  49     qxl->guest_primary.abs_stride = abs(sc->stride);
  50     qxl->guest_primary.resized++;
  51     switch (sc->format) {
  52     case SPICE_SURFACE_FMT_16_555:
  53         qxl->guest_primary.bytes_pp = 2;
  54         qxl->guest_primary.bits_pp = 15;
  55         break;
  56     case SPICE_SURFACE_FMT_16_565:
  57         qxl->guest_primary.bytes_pp = 2;
  58         qxl->guest_primary.bits_pp = 16;
  59         break;
  60     case SPICE_SURFACE_FMT_32_xRGB:
  61     case SPICE_SURFACE_FMT_32_ARGB:
  62         qxl->guest_primary.bytes_pp = 4;
  63         qxl->guest_primary.bits_pp = 32;
  64         break;
  65     default:
  66         fprintf(stderr, "%s: unhandled format: %x\n", __FUNCTION__,
  67                 qxl->guest_primary.surface.format);
  68         qxl->guest_primary.bytes_pp = 4;
  69         qxl->guest_primary.bits_pp = 32;
  70         break;
  71     }
  72 }
  73
  74 void qxl_render_update(PCIQXLDevice *qxl)
  75 {
  76     VGACommonState *vga = &qxl->vga;
  77     QXLRect dirty[32], update;
  78     void *ptr;
  79     int i, redraw = 0;
  80
  81     if (!is_buffer_shared(vga->ds->surface)) {
  82         dprint(qxl, 1, "%s: restoring shared displaysurface\n", __func__);
  83         qxl->guest_primary.resized++;
  84         qxl->guest_primary.commands++;
  85         redraw = 1;
  86     }
  87
  88     if (qxl->guest_primary.resized) {
  89         qxl->guest_primary.resized = 0;
  90
  91         if (qxl->guest_primary.flipped) {
  92             g_free(qxl->guest_primary.flipped);
  93             qxl->guest_primary.flipped = NULL;
  94         }
  95         qemu_free_displaysurface(vga->ds);
  96
  97         qxl->guest_primary.data = memory_region_get_ram_ptr(&qxl->vga.vram);
  98         if (qxl->guest_primary.qxl_stride < 0) {
  99             /* spice surface is upside down -> need extra buffer to flip */
 100             qxl->guest_primary.flipped =
 101                 g_malloc(qxl->guest_primary.surface.width *
 102                          qxl->guest_primary.abs_stride);
 103             ptr = qxl->guest_primary.flipped;
 104         } else {
 105             ptr = qxl->guest_primary.data;
 106         }
 107         dprint(qxl, 1, "%s: %dx%d, stride %d, bpp %d, depth %d, flip %s\n",
 108                __FUNCTION__,
 109                qxl->guest_primary.surface.width,
 110                qxl->guest_primary.surface.height,
 111                qxl->guest_primary.qxl_stride,
 112                qxl->guest_primary.bytes_pp,
 113                qxl->guest_primary.bits_pp,
 114                qxl->guest_primary.flipped ? "yes" : "no");
 115         vga->ds->surface =
 116             qemu_create_displaysurface_from(qxl->guest_primary.surface.width,
 117                                             qxl->guest_primary.surface.height,
 118                                             qxl->guest_primary.bits_pp,
 119                                             qxl->guest_primary.abs_stride,
 120                                             ptr);
 121         dpy_resize(vga->ds);
 122     }
 123
 124     if (!qxl->guest_primary.commands) {
 125         return;
 126     }
 127     qxl->guest_primary.commands = 0;
 128
 129     update.left   = 0;
 130     update.right  = qxl->guest_primary.surface.width;
 131     update.top    = 0;
 132     update.bottom = qxl->guest_primary.surface.height;
 133
 134     memset(dirty, 0, sizeof(dirty));
 135     qxl_spice_update_area(qxl, 0, &update,
 136                           dirty, ARRAY_SIZE(dirty), 1, QXL_SYNC);
 137     if (redraw) {
 138         memset(dirty, 0, sizeof(dirty));
 139         dirty[0] = update;
 140     }
 141
 142     for (i = 0; i < ARRAY_SIZE(dirty); i++) {
 143         if (qemu_spice_rect_is_empty(dirty+i)) {
 144             break;
 145         }
 146         if (qxl->guest_primary.flipped) {
 147             qxl_flip(qxl, dirty+i);
 148         }
 149         dpy_update(vga->ds,
 150                    dirty[i].left, dirty[i].top,
 151                    dirty[i].right - dirty[i].left,
 152                    dirty[i].bottom - dirty[i].top);
 153     }
 154 }
 155
 156 static QEMUCursor *qxl_cursor(PCIQXLDevice *qxl, QXLCursor *cursor)
 157 {
 158     QEMUCursor *c;
 159     uint8_t *image, *mask;
 160     int size;
 161
 162     c = cursor_alloc(cursor->header.width, cursor->header.height);
 163     c->hot_x = cursor->header.hot_spot_x;
 164     c->hot_y = cursor->header.hot_spot_y;
 165     switch (cursor->header.type) {
 166     case SPICE_CURSOR_TYPE_ALPHA:
 167         size = cursor->header.width * cursor->header.height * sizeof(uint32_t);
 168         memcpy(c->data, cursor->chunk.data, size);
 169         if (qxl->debug > 2) {
 170             cursor_print_ascii_art(c, "qxl/alpha");
 171         }
 172         break;
 173     case SPICE_CURSOR_TYPE_MONO:
 174         mask  = cursor->chunk.data;
 175         image = mask + cursor_get_mono_bpl(c) * c->width;
 176         cursor_set_mono(c, 0xffffff, 0x000000, image, 1, mask);
 177         if (qxl->debug > 2) {
 178             cursor_print_ascii_art(c, "qxl/mono");
 179         }
 180         break;
 181     default:
 182         fprintf(stderr, "%s: not implemented: type %d\n",
 183                 __FUNCTION__, cursor->header.type);
 184         goto fail;
 185     }
 186     return c;
 187
 188 fail:
 189     cursor_put(c);
 190     return NULL;
 191 }
 192
 193
 194 /* called from spice server thread context only */
 195 void qxl_render_cursor(PCIQXLDevice *qxl, QXLCommandExt *ext)
 196 {
 197     QXLCursorCmd *cmd = qxl_phys2virt(qxl, ext->cmd.data, ext->group_id);
 198     QXLCursor *cursor;
 199     QEMUCursor *c;
 200
 201     if (!qxl->ssd.ds->mouse_set || !qxl->ssd.ds->cursor_define) {
 202         return;
 203     }
 204
 205     if (qxl->debug > 1 && cmd->type != QXL_CURSOR_MOVE) {
 206         fprintf(stderr, "%s", __FUNCTION__);
 207         qxl_log_cmd_cursor(qxl, cmd, ext->group_id);
 208         fprintf(stderr, "\n");
 209     }
 210     switch (cmd->type) {
 211     case QXL_CURSOR_SET:
 212         cursor = qxl_phys2virt(qxl, cmd->u.set.shape, ext->group_id);
 213         if (cursor->chunk.data_size != cursor->data_size) {
 214             fprintf(stderr, "%s: multiple chunks\n", __FUNCTION__);
 215             return;
 216         }
 217         c = qxl_cursor(qxl, cursor);
 218         if (c == NULL) {
 219             c = cursor_builtin_left_ptr();
 220         }
 221         qemu_mutex_lock(&qxl->ssd.lock);
 222         if (qxl->ssd.cursor) {
 223             cursor_put(qxl->ssd.cursor);
 224         }
 225         qxl->ssd.cursor = c;
 226         qxl->ssd.mouse_x = cmd->u.set.position.x;
 227         qxl->ssd.mouse_y = cmd->u.set.position.y;
 228         qemu_mutex_unlock(&qxl->ssd.lock);
 229         break;
 230     case QXL_CURSOR_MOVE:
 231         qemu_mutex_lock(&qxl->ssd.lock);
 232         qxl->ssd.mouse_x = cmd->u.position.x;
 233         qxl->ssd.mouse_y = cmd->u.position.y;
 234         qemu_mutex_unlock(&qxl->ssd.lock);
 235         break;
 236     }
 237 }