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Don't send alpha bytes for primary surface

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The framebuffer is not used as a source for alpha blends, so we never
need to scan it for alpha bytes.
This commit is contained in:
Alexander Larsson 2010-04-30 09:52:42 +02:00
parent 7425253cec
commit 295c8ed8bc
1 changed files with 8 additions and 2 deletions
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10
server/red_worker.c
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@ -3653,7 +3653,10 @@ static inline int red_handle_self_bitmap(RedWorker *worker, Drawable *drawable)
red_get_area(worker, drawable->surface_id,
&drawable->qxl_drawable->self_bitmap_area, dest, dest_stride, TRUE);
if (image->bitmap.format == SPICE_BITMAP_FMT_32BIT &&
/* For 32bit non-primary surfaces we need to keep any non-zero
high bytes as the surface may be used as source to an alpha_blend */
if (!is_primary_surface(worker, drawable->surface_id) &&
image->bitmap.format == SPICE_BITMAP_FMT_32BIT &&
rgb32_data_has_alpha(width, height, dest_stride, dest, &all_set)) {
if (all_set) {
image->descriptor.flags |= SPICE_IMAGE_FLAGS_HIGH_BITS_SET;
@ -4987,7 +4990,10 @@ static void red_add_surface_image(RedWorker *worker, int surface_id)
area.bottom = surface->context.height;
canvas->ops->read_bits(canvas, item->data, stride, &area);
if (item->image_format == SPICE_BITMAP_FMT_32BIT &&
/* For 32bit non-primary surfaces we need to keep any non-zero
high bytes as the surface may be used as source to an alpha_blend */
if (!is_primary_surface(worker, surface_id) &&
item->image_format == SPICE_BITMAP_FMT_32BIT &&
rgb32_data_has_alpha(item->width, item->height, item->stride, item->data, &all_set)) {
if (all_set) {
item->image_flags |= SPICE_IMAGE_FLAGS_HIGH_BITS_SET;