spice uses negative stride value to signal the bitmap is upside down.
The qxl renderer (used for scl, vnc and screenshots) wants a positive
value because it is easier to work with. The positive value is then
stored in the very same variable, which has the drawback that the
upside-down test works only once. Fix by using two variables.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
int len, i;
src += (qxl->guest_primary.surface.height - rect->top - 1) *
int len, i;
src += (qxl->guest_primary.surface.height - rect->top - 1) *
- qxl->guest_primary.stride;
- dst += rect->top * qxl->guest_primary.stride;
+ 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;
len = (rect->right - rect->left) * qxl->guest_primary.bytes_pp;
for (i = rect->top; i < rect->bottom; i++) {
memcpy(dst, src, len);
src += rect->left * qxl->guest_primary.bytes_pp;
dst += rect->left * qxl->guest_primary.bytes_pp;
len = (rect->right - rect->left) * qxl->guest_primary.bytes_pp;
for (i = rect->top; i < rect->bottom; i++) {
memcpy(dst, src, len);
- dst += qxl->guest_primary.stride;
- src -= qxl->guest_primary.stride;
+ dst += qxl->guest_primary.abs_stride;
+ src -= qxl->guest_primary.abs_stride;
{
QXLSurfaceCreate *sc = &qxl->guest_primary.surface;
{
QXLSurfaceCreate *sc = &qxl->guest_primary.surface;
- qxl->guest_primary.stride = sc->stride;
+ qxl->guest_primary.qxl_stride = sc->stride;
+ qxl->guest_primary.abs_stride = abs(sc->stride);
qxl->guest_primary.resized++;
switch (sc->format) {
case SPICE_SURFACE_FMT_16_555:
qxl->guest_primary.resized++;
switch (sc->format) {
case SPICE_SURFACE_FMT_16_555:
qemu_free_displaysurface(vga->ds);
qxl->guest_primary.data = memory_region_get_ram_ptr(&qxl->vga.vram);
qemu_free_displaysurface(vga->ds);
qxl->guest_primary.data = memory_region_get_ram_ptr(&qxl->vga.vram);
- if (qxl->guest_primary.stride < 0) {
+ if (qxl->guest_primary.qxl_stride < 0) {
/* spice surface is upside down -> need extra buffer to flip */
/* spice surface is upside down -> need extra buffer to flip */
- qxl->guest_primary.stride = -qxl->guest_primary.stride;
- qxl->guest_primary.flipped = g_malloc(qxl->guest_primary.surface.width *
- qxl->guest_primary.stride);
+ qxl->guest_primary.flipped =
+ g_malloc(qxl->guest_primary.surface.width *
+ qxl->guest_primary.abs_stride);
ptr = qxl->guest_primary.flipped;
} else {
ptr = qxl->guest_primary.data;
ptr = qxl->guest_primary.flipped;
} else {
ptr = qxl->guest_primary.data;
__FUNCTION__,
qxl->guest_primary.surface.width,
qxl->guest_primary.surface.height,
__FUNCTION__,
qxl->guest_primary.surface.width,
qxl->guest_primary.surface.height,
- qxl->guest_primary.stride,
+ qxl->guest_primary.qxl_stride,
qxl->guest_primary.bytes_pp,
qxl->guest_primary.bits_pp,
qxl->guest_primary.flipped ? "yes" : "no");
qxl->guest_primary.bytes_pp,
qxl->guest_primary.bits_pp,
qxl->guest_primary.flipped ? "yes" : "no");
qemu_create_displaysurface_from(qxl->guest_primary.surface.width,
qxl->guest_primary.surface.height,
qxl->guest_primary.bits_pp,
qemu_create_displaysurface_from(qxl->guest_primary.surface.width,
qxl->guest_primary.surface.height,
qxl->guest_primary.bits_pp,
- qxl->guest_primary.stride,
+ qxl->guest_primary.abs_stride,
ptr);
dpy_resize(vga->ds);
}
ptr);
dpy_resize(vga->ds);
}
QXLSurfaceCreate surface;
uint32_t commands;
uint32_t resized;
QXLSurfaceCreate surface;
uint32_t commands;
uint32_t resized;
+ int32_t qxl_stride;
+ uint32_t abs_stride;
uint32_t bits_pp;
uint32_t bytes_pp;
uint8_t *data, *flipped;
uint32_t bits_pp;
uint32_t bytes_pp;
uint8_t *data, *flipped;