diff options
Diffstat (limited to 'hw/display/vga.c')
| -rw-r--r-- | hw/display/vga.c | 18 |
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)); |