Windsome Zeng
50 lines
1.7 KiB
Diff
50 lines
1.7 KiB
Diff
From 03f4f18f9edb4090c6aeca16e6f4de602aea68bf Mon Sep 17 00:00:00 2001
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From: Brendan King <Brendan.King@imgtec.com>
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Date: Thu, 13 Apr 2017 10:12:40 +0100
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Subject: [PATCH 16/67] egl/dri3: fix segfault in eglCopyBuffers
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The loader_dri3_copy_drawable function expected the drawable to have
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a fake front buffer, resulting in a segfault if there wasn't one,
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when dri3_fence_reset was called.
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If there is no fake front buffer, but there are back buffers, use the
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current back buffer.
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---
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src/loader/loader_dri3_helper.c | 15 ++++++++++++---
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1 file changed, 12 insertions(+), 3 deletions(-)
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diff --git a/src/loader/loader_dri3_helper.c b/src/loader/loader_dri3_helper.c
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index 6e825f9a898..ff6d1ffc660 100644
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--- a/src/loader/loader_dri3_helper.c
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+++ b/src/loader/loader_dri3_helper.c
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@@ -863,15 +863,24 @@ loader_dri3_copy_drawable(struct loader_dri3_drawable *draw,
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xcb_drawable_t dest,
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xcb_drawable_t src)
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{
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+ struct loader_dri3_buffer *buffer;
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+
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+ if (draw->have_fake_front)
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+ buffer = dri3_fake_front_buffer(draw);
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+ else if (draw->have_back)
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+ buffer = dri3_back_buffer(draw);
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+ else
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+ return;
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+
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loader_dri3_flush(draw, __DRI2_FLUSH_DRAWABLE, __DRI2_THROTTLE_COPYSUBBUFFER);
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- dri3_fence_reset(draw->conn, dri3_fake_front_buffer(draw));
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+ dri3_fence_reset(draw->conn, buffer);
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dri3_copy_area(draw->conn,
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src, dest,
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dri3_drawable_gc(draw),
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0, 0, 0, 0, draw->width, draw->height);
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- dri3_fence_trigger(draw->conn, dri3_fake_front_buffer(draw));
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- dri3_fence_await(draw->conn, draw, dri3_fake_front_buffer(draw));
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+ dri3_fence_trigger(draw->conn, buffer);
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+ dri3_fence_await(draw->conn, draw, buffer);
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}
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void
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--
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2.25.1
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