mirror of
https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git
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803550111a
GTK 4.14 comes with a new GL renderer that does not support GL shader nodes anymore, so the conversion from non-premultiplied alpha to premultiplied alpha has to happen differently. For GTK 4.14 or newer we use the correct format directly when building the texture, but only if a GLES3+ context is used. In that case the NGL renderer is used by GTK, which supports non-premultiplied formats correctly and fast. For GTK 4.10-4.12, or 4.14 and newer if a GLES2 context is used, we use a self-mask to pre-multiply the alpha. For GTK before 4.10, we use a GL shader and hope that it works. Fixes https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/issues/488 Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1452>
47 lines
1.4 KiB
Rust
47 lines
1.4 KiB
Rust
//
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// Copyright (C) 2021 Bilal Elmoussaoui <bil.elmoussaoui@gmail.com>
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// Copyright (C) 2021 Jordan Petridis <jordan@centricular.com>
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// Copyright (C) 2021 Sebastian Dröge <sebastian@centricular.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License, v2.0.
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// If a copy of the MPL was not distributed with this file, You can obtain one at
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// <https://mozilla.org/MPL/2.0/>.
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//
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// SPDX-License-Identifier: MPL-2.0
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#![allow(clippy::non_send_fields_in_send_ty, unused_doc_comments)]
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/**
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* plugin-gtk4:
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*
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* Since: plugins-rs-0.8.0
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*/
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use gst::glib;
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mod sink;
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mod utils;
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pub use sink::PaintableSink;
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fn plugin_init(plugin: &gst::Plugin) -> Result<(), glib::BoolError> {
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#[cfg(not(feature = "gtk_v4_10"))]
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{
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if gtk::micro_version() >= 13 {
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gst::warning!(sink::imp::CAT, obj: plugin, "GTK 4.13 or newer detected but plugin not compiled with support for this version. Rendering of video frames with alpha will likely be wrong");
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}
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}
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sink::register(plugin)
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}
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gst::plugin_define!(
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gtk4,
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env!("CARGO_PKG_DESCRIPTION"),
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plugin_init,
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concat!(env!("CARGO_PKG_VERSION"), "-", env!("COMMIT_ID")),
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// FIXME: MPL-2.0 is only allowed since 1.18.3 (as unknown) and 1.20 (as known)
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"MPL",
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env!("CARGO_PKG_NAME"),
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env!("CARGO_PKG_NAME"),
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env!("CARGO_PKG_REPOSITORY"),
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env!("BUILD_REL_DATE")
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);
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