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| author | Gerd Hoffmann <kraxel@redhat.com> | 2012-02-27 11:05:09 +0100 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2012-02-28 17:22:30 +0100 |
| commit | e2efc0a3267811a2b9459116b2310325ef011f6e (patch) | |
| tree | 54d593fbb1d76fd56510e44ea99a3c11fea849ee /hw/qxl-render.c | |
| parent | 35c633291439185d3bbf84da23db1572498e0d5d (diff) | |
| download | qemu-e2efc0a3267811a2b9459116b2310325ef011f6e.zip qemu-e2efc0a3267811a2b9459116b2310325ef011f6e.tar.gz qemu-e2efc0a3267811a2b9459116b2310325ef011f6e.tar.bz2 | |
qxl: properly handle upright and non-shared surfaces
Although qxl creates a shared displaysurface when the qxl surface is
upright and doesn't need to be flipped there is no guarantee that the
surface doesn't become unshared for some reason. Rename qxl_flip to
qxl_blit and fix it to handle both flip and non-flip cases.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw/qxl-render.c')
| -rw-r--r-- | hw/qxl-render.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/hw/qxl-render.c b/hw/qxl-render.c index f323a4d..25857f6 100644 --- a/hw/qxl-render.c +++ b/hw/qxl-render.c @@ -21,25 +21,31 @@ #include "qxl.h" -static void qxl_flip(PCIQXLDevice *qxl, QXLRect *rect) +static void qxl_blit(PCIQXLDevice *qxl, QXLRect *rect) { uint8_t *src; uint8_t *dst = qxl->vga.ds->surface->data; int len, i; - if (qxl->guest_primary.qxl_stride > 0) { + if (is_buffer_shared(qxl->vga.ds->surface)) { return; } if (!qxl->guest_primary.data) { dprint(qxl, 1, "%s: initializing guest_primary.data\n", __func__); qxl->guest_primary.data = memory_region_get_ram_ptr(&qxl->vga.vram); } - dprint(qxl, 1, "%s: stride %d, [%d, %d, %d, %d]\n", __func__, + dprint(qxl, 2, "%s: stride %d, [%d, %d, %d, %d]\n", __func__, qxl->guest_primary.qxl_stride, rect->left, rect->right, rect->top, rect->bottom); src = qxl->guest_primary.data; - src += (qxl->guest_primary.surface.height - rect->top - 1) * - qxl->guest_primary.abs_stride; + if (qxl->guest_primary.qxl_stride < 0) { + /* qxl surface is upside down, walk src scanlines + * in reverse order to flip it */ + src += (qxl->guest_primary.surface.height - rect->top - 1) * + qxl->guest_primary.abs_stride; + } else { + src += rect->top * qxl->guest_primary.abs_stride; + } dst += rect->top * qxl->guest_primary.abs_stride; src += rect->left * qxl->guest_primary.bytes_pp; dst += rect->left * qxl->guest_primary.bytes_pp; @@ -48,7 +54,7 @@ static void qxl_flip(PCIQXLDevice *qxl, QXLRect *rect) for (i = rect->top; i < rect->bottom; i++) { memcpy(dst, src, len); dst += qxl->guest_primary.abs_stride; - src -= qxl->guest_primary.abs_stride; + src += qxl->guest_primary.qxl_stride; } } @@ -132,7 +138,7 @@ static void qxl_render_update_area_unlocked(PCIQXLDevice *qxl) if (qemu_spice_rect_is_empty(qxl->dirty+i)) { break; } - qxl_flip(qxl, qxl->dirty+i); + qxl_blit(qxl, qxl->dirty+i); dpy_update(vga->ds, qxl->dirty[i].left, qxl->dirty[i].top, qxl->dirty[i].right - qxl->dirty[i].left, |