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@@ -0,0 +1,55 @@
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+ From 4b17533fcb30842caf0035ba593b7d986520cc85 Mon Sep 17 00:00:00 2001
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+ From: =?UTF-8?q?Michel=20D=C3=A4nzer?= <michel.daenzer@amd.com>
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+ Date: Tue, 30 Apr 2019 17:50:15 +0200
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+ Subject: [PATCH] dri3: Always flush glamor before sharing pixmap storage with
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+ clients
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+
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+ Even if glamor_gbm_bo_from_pixmap / glamor_fd_from_pixmap themselves
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+ don't trigger any drawing, there could already be unflushed drawing to
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+ the pixmap whose storage we share with a client.
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+ ---
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+ src/amdgpu_dri3.c | 26 +++++---------------------
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+ 1 file changed, 5 insertions(+), 21 deletions(-)
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+
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+ diff --git a/src/amdgpu_dri3.c b/src/amdgpu_dri3.c
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+ index 7f1745e..ed1e2f9 100644
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+ --- a/src/amdgpu_dri3.c
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+ +++ b/src/amdgpu_dri3.c
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+ @@ -221,29 +221,13 @@ static int amdgpu_dri3_fd_from_pixmap(ScreenPtr screen,
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+ AMDGPUInfoPtr info = AMDGPUPTR(scrn);
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+
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+ if (info->use_glamor) {
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+ - Bool need_flush = TRUE;
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+ - int ret = -1;
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+ -#if XORG_VERSION_CURRENT >= XORG_VERSION_NUMERIC(1,19,99,904,0)
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+ - struct gbm_bo *gbm_bo = glamor_gbm_bo_from_pixmap(screen, pixmap);
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+ + int ret = glamor_fd_from_pixmap(screen, pixmap, stride, size);
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+
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+ - if (gbm_bo) {
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+ - ret = gbm_bo_get_fd(gbm_bo);
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+ - gbm_bo_destroy(gbm_bo);
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+ -
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+ - if (ret >= 0)
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+ - need_flush = FALSE;
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+ - }
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+ -#endif
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+ -
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+ - if (ret < 0)
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+ - ret = glamor_fd_from_pixmap(screen, pixmap, stride, size);
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+ -
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+ - /* glamor might have needed to reallocate the pixmap storage and
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+ - * copy the pixmap contents to the new storage. The copy
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+ - * operation needs to be flushed to the kernel driver before the
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+ - * client starts using the pixmap storage for direct rendering.
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+ + /* Any pending drawing operations need to be flushed to the
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+ + * kernel driver before the client starts using the pixmap
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+ + * storage for direct rendering.
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+ */
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+ - if (ret >= 0 && need_flush)
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+ + if (ret >= 0)
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+ amdgpu_glamor_flush(scrn);
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+
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+ return ret;
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+ --
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+ 2.21.0
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+
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Related: rhbz#1725499