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authorPeter Maydell <peter.maydell@linaro.org>2015-01-19 13:37:05 +0000
committerPeter Maydell <peter.maydell@linaro.org>2015-01-19 13:37:05 +0000
commit74acb99737dbedd86654d660c0c20815139a873c (patch)
treefc448d083e2ae57d7d3b7d8e361a2b052fabd2f3 /hw/display/vga.c
parent1e42c353469cb58ca4f3b450eea4211af7d0b147 (diff)
parent877417d9ae6846bea4744b198131a5fe5117d7a5 (diff)
downloadfocaccia-qemu-74acb99737dbedd86654d660c0c20815139a873c.tar.gz
focaccia-qemu-74acb99737dbedd86654d660c0c20815139a873c.zip
Merge remote-tracking branch 'remotes/kraxel/tags/pull-console-20150119-1' into staging
ui: add shared surface format negotiation.

# gpg: Signature made Mon 19 Jan 2015 12:47:36 GMT using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"

* remotes/kraxel/tags/pull-console-20150119-1:
  ui/sdl2: Support shared surface for more pixman formats
  ui/sdl: Support shared surface for more pixman formats
  ui/gtk: Support shared surface for most pixman formats
  ui/spice: Support shared surface for most pixman formats
  ui/vnc: Support shared surface for most pixman formats
  ui/pixman: add qemu_pixman_check_format
  ui: Add dpy_gfx_check_format() to check backend shared surface support
  ui: Make qemu_default_pixman_format() return 0 on unsupported formats

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/display/vga.c')
-rw-r--r--hw/display/vga.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/hw/display/vga.c b/hw/display/vga.c
index a620c07864..ffcfce38a4 100644
--- a/hw/display/vga.c
+++ b/hw/display/vga.c
@@ -1437,6 +1437,7 @@ static void vga_draw_graphic(VGACommonState *s, int full_update)
     uint32_t v, addr1, addr;
     vga_draw_line_func *vga_draw_line = NULL;
     bool share_surface;
+    pixman_format_code_t format;
 #ifdef HOST_WORDS_BIGENDIAN
     bool byteswap = !s->big_endian_fb;
 #else
@@ -1481,8 +1482,19 @@ static void vga_draw_graphic(VGACommonState *s, int full_update)
 
     depth = s->get_bpp(s);
 
-    share_surface = (!s->force_shadow) &&
-            ( depth == 32 || (depth == 16 && !byteswap) );
+    /*
+     * Check whether we can share the surface with the backend
+     * or whether we need a shadow surface. We share native
+     * endian surfaces for 15bpp and above and byteswapped
+     * surfaces for 24bpp and above.
+     */
+    format = qemu_default_pixman_format(depth, !byteswap);
+    if (format) {
+        share_surface = dpy_gfx_check_format(s->con, format)
+            && !s->force_shadow;
+    } else {
+        share_surface = false;
+    }
     if (s->line_offset != s->last_line_offset ||
         disp_width != s->last_width ||
         height != s->last_height ||
@@ -1490,8 +1502,6 @@ static void vga_draw_graphic(VGACommonState *s, int full_update)
         s->last_byteswap != byteswap ||
         share_surface != is_buffer_shared(surface)) {
         if (share_surface) {
-            pixman_format_code_t format =
-                qemu_default_pixman_format(depth, !byteswap);
             surface = qemu_create_displaysurface_from(disp_width,
                     height, format, s->line_offset,
                     s->vram_ptr + (s->start_addr * 4));