Blame SOURCES/0011-xwayland-shm-don-t-create-alpha-buffers-if-the-windo.patch
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From 341f2f5de09e59c3498d5f4e626b8fd86f4a0dcd Mon Sep 17 00:00:00 2001
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From: Giovanni Campagna <gcampagn@redhat.com>
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Date: Wed, 21 Aug 2013 09:53:25 +0200
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Subject: [PATCH 11/38] xwayland-shm: don't create alpha buffers if the window
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doesn't have alpha
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If the window is using a 24 bit visual, we must request a buffer
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format without alpha, or garbage is rendered.
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---
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hw/xfree86/xwayland/xwayland.c | 5 ++++-
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1 file changed, 4 insertions(+), 1 deletion(-)
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diff --git a/hw/xfree86/xwayland/xwayland.c b/hw/xfree86/xwayland/xwayland.c
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index f59bfe4..880b7ec 100644
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--- a/hw/xfree86/xwayland/xwayland.c
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+++ b/hw/xfree86/xwayland/xwayland.c
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@@ -278,7 +278,10 @@ xwl_create_window_buffer_shm(struct xwl_window *xwl_window,
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xwl_window->buffer = wl_shm_pool_create_buffer(pool, 0,
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pixmap->drawable.width,
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pixmap->drawable.height,
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- stride, WL_SHM_FORMAT_ARGB8888);
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+ stride,
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+ pixmap->drawable.depth == 32 ?
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+ WL_SHM_FORMAT_ARGB8888 :
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+ WL_SHM_FORMAT_XRGB8888);
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wl_shm_pool_destroy(pool);
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return xwl_window->buffer ? Success : BadDrawable;
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--
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1.8.4.2
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