From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:36522) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UN96W-000700-3Q for qemu-devel@nongnu.org; Tue, 02 Apr 2013 17:50:57 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UN96S-0008U5-Fu for qemu-devel@nongnu.org; Tue, 02 Apr 2013 17:50:55 -0400 Sender: fluxion From: Michael Roth Date: Tue, 2 Apr 2013 16:45:13 -0500 Message-Id: <1364939142-30066-9-git-send-email-mdroth@linux.vnet.ibm.com> In-Reply-To: <1364939142-30066-1-git-send-email-mdroth@linux.vnet.ibm.com> References: <1364939142-30066-1-git-send-email-mdroth@linux.vnet.ibm.com> Subject: [Qemu-devel] [PATCH 08/37] vga: fix byteswapping. List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org From: Gerd Hoffmann In case host and guest endianness differ the vga code first creates a shared surface (using qemu_create_displaysurface_from), then goes patch the surface format to indicate that the bytes must be swapped. The switch to pixman broke that hack as the format patching isn't propagated into the pixman image, so ui code using the pixman image directly (such as vnc) uses the wrong format. Fix that by adding a byteswap parameter to qemu_create_displaysurface_from, so we'll use the correct format when creating the surface (and the pixman image) and don't have to patch the format afterwards. [ v2: unbreak xen build ] Cc: qemu-stable@nongnu.org Cc: mark.cave-ayland@ilande.co.uk Cc: agraf@suse.de Signed-off-by: Gerd Hoffmann Message-id: 1361349432-23884-1-git-send-email-kraxel@redhat.com Signed-off-by: Anthony Liguori (cherry picked from commit b1424e0381a7f1c9969079eca4458d5f20bf1859) Signed-off-by: Michael Roth --- hw/qxl-render.c | 3 ++- hw/vga.c | 18 ++++++++---------- hw/vmware_vga.c | 2 +- hw/xenfb.c | 3 ++- include/ui/console.h | 3 ++- ui/console.c | 9 +++++++-- 6 files changed, 22 insertions(+), 16 deletions(-) diff --git a/hw/qxl-render.c b/hw/qxl-render.c index 88e63f8..455fb91 100644 --- a/hw/qxl-render.c +++ b/hw/qxl-render.c @@ -118,7 +118,8 @@ static void qxl_render_update_area_unlocked(PCIQXLDevice *qxl) qxl->guest_primary.surface.height, qxl->guest_primary.bits_pp, qxl->guest_primary.abs_stride, - qxl->guest_primary.data); + qxl->guest_primary.data, + false); } else { qemu_resize_displaysurface(vga->ds, qxl->guest_primary.surface.width, diff --git a/hw/vga.c b/hw/vga.c index e2ba7f2..1caf23d 100644 --- a/hw/vga.c +++ b/hw/vga.c @@ -1643,6 +1643,11 @@ static void vga_draw_graphic(VGACommonState *s, int full_update) uint8_t *d; uint32_t v, addr1, addr; vga_draw_line_func *vga_draw_line; +#if defined(HOST_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN) + static const bool byteswap = false; +#else + static const bool byteswap = true; +#endif full_update |= update_basic_params(s); @@ -1685,18 +1690,11 @@ static void vga_draw_graphic(VGACommonState *s, int full_update) disp_width != s->last_width || height != s->last_height || s->last_depth != depth) { -#if defined(HOST_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN) - if (depth == 16 || depth == 32) { -#else - if (depth == 32) { -#endif + if (depth == 32 || (depth == 16 && !byteswap)) { qemu_free_displaysurface(s->ds); s->ds->surface = qemu_create_displaysurface_from(disp_width, height, depth, s->line_offset, - s->vram_ptr + (s->start_addr * 4)); -#if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) - s->ds->surface->pf = qemu_different_endianness_pixelformat(depth); -#endif + s->vram_ptr + (s->start_addr * 4), byteswap); dpy_gfx_resize(s->ds); } else { qemu_console_resize(s->ds, disp_width, height); @@ -1715,7 +1713,7 @@ static void vga_draw_graphic(VGACommonState *s, int full_update) s->ds->surface = qemu_create_displaysurface_from(disp_width, height, depth, s->line_offset, - s->vram_ptr + (s->start_addr * 4)); + s->vram_ptr + (s->start_addr * 4), byteswap); dpy_gfx_setdata(s->ds); } diff --git a/hw/vmware_vga.c b/hw/vmware_vga.c index cd15ee4..8fc201b 100644 --- a/hw/vmware_vga.c +++ b/hw/vmware_vga.c @@ -1074,7 +1074,7 @@ static void vmsvga_screen_dump(void *opaque, const char *filename, bool cswitch, ds_get_height(s->vga.ds), 32, ds_get_linesize(s->vga.ds), - s->vga.vram_ptr); + s->vga.vram_ptr, false); ppm_save(filename, ds, errp); g_free(ds); } diff --git a/hw/xenfb.c b/hw/xenfb.c index 903efd3..7f1f6b4 100644 --- a/hw/xenfb.c +++ b/hw/xenfb.c @@ -756,7 +756,8 @@ static void xenfb_update(void *opaque) qemu_free_displaysurface(xenfb->c.ds); xenfb->c.ds->surface = qemu_create_displaysurface_from (xenfb->width, xenfb->height, xenfb->depth, - xenfb->row_stride, xenfb->pixels + xenfb->offset); + xenfb->row_stride, xenfb->pixels + xenfb->offset, + false); break; default: /* we must convert stuff */ diff --git a/include/ui/console.h b/include/ui/console.h index fc23baa..18012f1 100644 --- a/include/ui/console.h +++ b/include/ui/console.h @@ -184,7 +184,8 @@ struct DisplayState { void register_displaystate(DisplayState *ds); DisplayState *get_displaystate(void); DisplaySurface* qemu_create_displaysurface_from(int width, int height, int bpp, - int linesize, uint8_t *data); + int linesize, uint8_t *data, + bool byteswap); PixelFormat qemu_different_endianness_pixelformat(int bpp); PixelFormat qemu_default_pixelformat(int bpp); diff --git a/ui/console.c b/ui/console.c index 0a68836..25e06a5 100644 --- a/ui/console.c +++ b/ui/console.c @@ -1339,11 +1339,16 @@ DisplaySurface *qemu_resize_displaysurface(DisplayState *ds, } DisplaySurface *qemu_create_displaysurface_from(int width, int height, int bpp, - int linesize, uint8_t *data) + int linesize, uint8_t *data, + bool byteswap) { DisplaySurface *surface = g_new0(DisplaySurface, 1); - surface->pf = qemu_default_pixelformat(bpp); + if (byteswap) { + surface->pf = qemu_different_endianness_pixelformat(bpp); + } else { + surface->pf = qemu_default_pixelformat(bpp); + } surface->format = qemu_pixman_get_format(&surface->pf); assert(surface->format != 0); -- 1.7.9.5