From 449627f0307a095a8b7f9a732a67613ef93e2906 Mon Sep 17 00:00:00 2001
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From: Jeffy Chen <jeffy.chen@rock-chips.com>
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Date: Mon, 31 May 2021 01:29:11 +0800
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Subject: [PATCH 09/15] Create new fence when there's no in-fences
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There're cases that in-fences are not provided.
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Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
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---
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.../wayland/gpu/gbm_surfaceless_wayland.cc | 21 +++++++++++++++++--
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1 file changed, 19 insertions(+), 2 deletions(-)
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diff --git a/ui/ozone/platform/wayland/gpu/gbm_surfaceless_wayland.cc b/ui/ozone/platform/wayland/gpu/gbm_surfaceless_wayland.cc
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index 8c096e3dd..2a9a88cf7 100644
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--- a/ui/ozone/platform/wayland/gpu/gbm_surfaceless_wayland.cc
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+++ b/ui/ozone/platform/wayland/gpu/gbm_surfaceless_wayland.cc
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@@ -32,6 +32,12 @@ static constexpr size_t kMaxSolidColorBuffers = 12;
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static constexpr gfx::Size kSolidColorBufferSize{4, 4};
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+void WaitForEGLFence(EGLDisplay display, EGLSyncKHR fence) {
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+ eglClientWaitSyncKHR(display, fence, EGL_SYNC_FLUSH_COMMANDS_BIT_KHR,
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+ EGL_FOREVER_KHR);
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+ eglDestroySyncKHR(display, fence);
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+}
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+
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void WaitForGpuFences(std::vector<std::unique_ptr<gfx::GpuFence>> fences) {
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for (auto& fence : fences)
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fence->Wait();
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@@ -211,14 +217,25 @@ void GbmSurfacelessWayland::SwapBuffersAsync(
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return;
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}
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- base::OnceClosure fence_wait_task;
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std::vector<std::unique_ptr<gfx::GpuFence>> fences;
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+ // Uset in-fences provided in the overlays. If there are none, we insert our
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+ // own fence and wait.
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for (auto& plane : frame->planes) {
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if (plane.second.gpu_fence)
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fences.push_back(std::move(plane.second.gpu_fence));
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}
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- fence_wait_task = base::BindOnce(&WaitForGpuFences, std::move(fences));
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+ base::OnceClosure fence_wait_task;
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+ if (!fences.empty()) {
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+ fence_wait_task = base::BindOnce(&WaitForGpuFences, std::move(fences));
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+ } else {
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+ // TODO(fangzhoug): the following should be replaced by a per surface flush
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+ // as it gets implemented in GL drivers.
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+ EGLSyncKHR fence = InsertFence(has_implicit_external_sync_);
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+ CHECK_NE(fence, EGL_NO_SYNC_KHR) << "eglCreateSyncKHR failed";
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+
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+ fence_wait_task = base::BindOnce(&WaitForEGLFence, GetDisplay(), fence);
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+ }
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base::OnceClosure fence_retired_callback = base::BindOnce(
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&GbmSurfacelessWayland::FenceRetired, weak_factory_.GetWeakPtr(), frame);
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--
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2.20.1
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