Fix VMware VGA depth computation

VMware VGA requires that the depth presented to the guest is the same as the
DisplaySurface that it renders to.  This is because it performs a very simple
memcpy() to blit from one surface to another.

We currently hardcode a 24-bit depth.  The surface allocator for SDL may, and
usually will, allocate a surface with a different depth causing screen
corruption.

This changes the code to allocate the DisplaySurface before initializing the
device which allows the depth of the DisplaySurface to be used instead of
hardcoding something.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
(cherry picked from commit a6109ff1b5d7184a9d490c4ff94f175940232ebd)

1 files changed, 7 insertions, 7 deletions

diff --git a/hw/vmware_vga.c b/hw/vmware_vga.c
index fcb680878d..ae913270f6 100644
--- a/hw/vmware_vga.c
+++ b/hw/vmware_vga.c
@@ -915,8 +915,8 @@ static void vmsvga_reset(struct vmsvga_state_s *s)
     s->width = -1;
     s->height = -1;
     s->svgaid = SVGA_ID;
-    s->depth = 24;
-    s->bypp = (s->depth + 7) >> 3;
+    s->depth = ds_get_bits_per_pixel(s->vga.ds);
+    s->bypp = ds_get_bytes_per_pixel(s->vga.ds);
     s->cursor.on = 0;
     s->redraw_fifo_first = 0;
     s->redraw_fifo_last = 0;
@@ -1114,6 +1114,11 @@ static void vmsvga_init(struct vmsvga_state_s *s, int vga_ram_size)
     s->scratch_size = SVGA_SCRATCH_SIZE;
     s->scratch = qemu_malloc(s->scratch_size * 4);
 
+    s->vga.ds = graphic_console_init(vmsvga_update_display,
+                                     vmsvga_invalidate_display,
+                                     vmsvga_screen_dump,
+                                     vmsvga_text_update, s);
+
     vmsvga_reset(s);
 
     s->fifo_size = SVGA_FIFO_SIZE;
@@ -1124,11 +1129,6 @@ static void vmsvga_init(struct vmsvga_state_s *s, int vga_ram_size)
     vga_init(&s->vga);
     vmstate_register(0, &vmstate_vga_common, &s->vga);
 
-    s->vga.ds = graphic_console_init(vmsvga_update_display,
-                                     vmsvga_invalidate_display,
-                                     vmsvga_screen_dump,
-                                     vmsvga_text_update, s);
-
     vga_init_vbe(&s->vga);
     rom_add_vga(VGABIOS_FILENAME);
 }