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From 7bcc274dbc6cb75814cce3e5c2e7f45cf25b0538 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Jonas=20=C3=85dahl?= <jadahl@gmail.com>
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Date: Tue, 9 Feb 2021 17:59:08 +0100
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Subject: [PATCH 1/2] clutter/stage-view: Hide double buffered shadowfb behind
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envvar
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It still results in worse performance than a single FBO based shadowfb,
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so don't use it. It will need a new EGL extension for zero copy CPU
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memory based FBO to be feasable.
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---
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clutter/clutter/clutter-stage-view.c | 12 ++++++++++--
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1 file changed, 10 insertions(+), 2 deletions(-)
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diff --git a/clutter/clutter/clutter-stage-view.c b/clutter/clutter/clutter-stage-view.c
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index 5e5966d06..ec18db7b8 100644
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--- a/clutter/clutter/clutter-stage-view.c
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+++ b/clutter/clutter/clutter-stage-view.c
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@@ -282,6 +282,14 @@ init_dma_buf_shadowfbs (ClutterStageView *view,
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CoglRenderer *cogl_renderer = cogl_context_get_renderer (cogl_context);
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CoglFramebuffer *initial_shadowfb;
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+ if (g_strcmp0 (g_getenv ("MUTTER_DEBUG_ENABLE_DOUBLE_BUFFER_SHADOWFB"),
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+ "1") != 0)
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+ {
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+ g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
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+ "Double buffered shadowfb not enabled");
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+ return FALSE;
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+ }
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+
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if (!cogl_clutter_winsys_has_feature (COGL_WINSYS_FEATURE_BUFFER_AGE))
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{
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g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
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@@ -390,8 +398,8 @@ init_shadowfb (ClutterStageView *view)
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return;
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}
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- g_warning ("Failed to initialize double buffered shadow fb for %s: %s",
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- priv->name, error->message);
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+ g_debug ("Failed to initialize double buffered shadow fb for %s: %s",
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+ priv->name, error->message);
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g_clear_error (&error);
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if (!init_fallback_shadowfb (view, cogl_context, width, height, &error))
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--
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2.29.2
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