From c12a50544eb296f054ccad1e92309f9843a4ee4c Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Thu, 20 May 2021 16:07:53 +0400
Subject: [PATCH] Allow force-disabling OpenGL.

---
 Telegram/Resources/langs/lang.strings         |  1 +
 Telegram/SourceFiles/core/core_settings.cpp   | 10 ++++++
 Telegram/SourceFiles/core/core_settings.h     |  8 +++++
 .../settings/settings_advanced.cpp            | 35 +++++++++++++++++++
 Telegram/lib_ui                               |  2 +-
 5 files changed, 55 insertions(+), 1 deletion(-)

diff --git a/Telegram/Resources/langs/lang.strings b/Telegram/Resources/langs/lang.strings
index 581c36a0dd..104f4143b3 100644
--- a/Telegram/Resources/langs/lang.strings
+++ b/Telegram/Resources/langs/lang.strings
@@ -451,6 +451,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_settings_system_integration" = "System integration";
 "lng_settings_performance" = "Performance";
 "lng_settings_enable_animations" = "Enable animations";
+"lng_settings_enable_opengl" = "Enable OpenGL rendering for video";
 "lng_settings_sensitive_title" = "Sensitive content";
 "lng_settings_sensitive_disable_filtering" = "Disable filtering";
 "lng_settings_sensitive_about" = "Display sensitive media in public channels on all your Telegram devices.";
diff --git a/Telegram/SourceFiles/core/core_settings.cpp b/Telegram/SourceFiles/core/core_settings.cpp
index b90da59175..ff75ef189c 100644
--- a/Telegram/SourceFiles/core/core_settings.cpp
+++ b/Telegram/SourceFiles/core/core_settings.cpp
@@ -14,6 +14,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "window/section_widget.h"
 #include "base/platform/base_platform_info.h"
 #include "webrtc/webrtc_create_adm.h"
+#include "ui/gl/gl_detection.h"
 #include "facades.h"
 
 namespace Core {
@@ -194,6 +195,7 @@ QByteArray Settings::serialize() const {
 		for (const auto &[id, variant] : _emojiVariants) {
 			stream << id << quint8(variant);
 		}
+		stream << qint32(_disableOpenGL ? 1 : 0);
 	}
 	return result;
 }
@@ -269,6 +271,7 @@ void Settings::addFromSerialized(const QByteArray &serialized) {
 	QByteArray windowPosition;
 	std::vector<RecentEmojiId> recentEmojiPreload;
 	base::flat_map<QString, uint8> emojiVariants;
+	qint32 disableOpenGL = _disableOpenGL ? 1 : 0;
 
 	stream >> themesAccentColors;
 	if (!stream.atEnd()) {
@@ -397,6 +400,9 @@ void Settings::addFromSerialized(const QByteArray &serialized) {
 			}
 		}
 	}
+	if (!stream.atEnd()) {
+		stream >> disableOpenGL;
+	}
 	if (stream.status() != QDataStream::Ok) {
 		LOG(("App Error: "
 			"Bad data for Core::Settings::constructFromSerialized()"));
@@ -502,6 +508,10 @@ void Settings::addFromSerialized(const QByteArray &serialized) {
 	}
 	_recentEmojiPreload = std::move(recentEmojiPreload);
 	_emojiVariants = std::move(emojiVariants);
+	_disableOpenGL = (disableOpenGL == 1);
+	if (!Platform::IsMac()) {
+		Ui::GL::ForceDisable(_disableOpenGL);
+	}
 }
 
 bool Settings::chatWide() const {
diff --git a/Telegram/SourceFiles/core/core_settings.h b/Telegram/SourceFiles/core/core_settings.h
index 963e64068b..3c0edd409a 100644
--- a/Telegram/SourceFiles/core/core_settings.h
+++ b/Telegram/SourceFiles/core/core_settings.h
@@ -532,6 +532,13 @@ public:
 	void saveEmojiVariant(EmojiPtr emoji);
 	void setLegacyEmojiVariants(QMap<QString, int> data);
 
+	[[nodiscard]] bool disableOpenGL() const {
+		return _disableOpenGL;
+	}
+	void setDisableOpenGL(bool value) {
+		_disableOpenGL = value;
+	}
+
 	[[nodiscard]] static bool ThirdColumnByDefault();
 	[[nodiscard]] static float64 DefaultDialogsWidthRatio();
 	[[nodiscard]] static qint32 SerializePlaybackSpeed(float64 speed) {
@@ -624,6 +631,7 @@ private:
 	rpl::variable<std::optional<bool>> _systemDarkMode = std::nullopt;
 	rpl::variable<bool> _systemDarkModeEnabled = false;
 	WindowPosition _windowPosition; // per-window
+	bool _disableOpenGL = false;
 
 	bool _tabbedReplacedWithInfo = false; // per-window
 	rpl::event_stream<bool> _tabbedReplacedWithInfoValue; // per-window
diff --git a/Telegram/SourceFiles/settings/settings_advanced.cpp b/Telegram/SourceFiles/settings/settings_advanced.cpp
index b9c1f71057..9fabbcfaec 100644
--- a/Telegram/SourceFiles/settings/settings_advanced.cpp
+++ b/Telegram/SourceFiles/settings/settings_advanced.cpp
@@ -502,10 +502,45 @@ void SetupAnimations(not_null<Ui::VerticalLayout*> container) {
 	}, container->lifetime());
 }
 
+void SetupOpenGL(not_null<Ui::VerticalLayout*> container) {
+	const auto toggles = container->lifetime().make_state<
+		rpl::event_stream<bool>
+	>();
+	const auto button = AddButton(
+		container,
+		tr::lng_settings_enable_opengl(),
+		st::settingsButton
+	)->toggleOn(
+		toggles->events_starting_with_copy(
+			!Core::App().settings().disableOpenGL())
+	);
+	button->toggledValue(
+	) | rpl::filter([](bool enabled) {
+		return (enabled == Core::App().settings().disableOpenGL());
+	}) | rpl::start_with_next([=](bool enabled) {
+		const auto confirmed = crl::guard(button, [=] {
+			Core::App().settings().setDisableOpenGL(!enabled);
+			Local::writeSettings();
+			App::restart();
+		});
+		const auto cancelled = crl::guard(button, [=] {
+			toggles->fire(!enabled);
+		});
+		Ui::show(Box<ConfirmBox>(
+			tr::lng_settings_need_restart(tr::now),
+			tr::lng_settings_restart_now(tr::now),
+			confirmed,
+			cancelled));
+	}, container->lifetime());
+}
+
 void SetupPerformance(
 		not_null<Window::SessionController*> controller,
 		not_null<Ui::VerticalLayout*> container) {
 	SetupAnimations(container);
+	if (!Platform::IsMac()) {
+		SetupOpenGL(container);
+	}
 }
 
 void SetupSystemIntegration(
diff --git a/Telegram/lib_ui b/Telegram/lib_ui
index ca5b2e6746..5e38964fbf 160000
--- a/Telegram/lib_ui
+++ b/Telegram/lib_ui
@@ -1 +1 @@
-Subproject commit ca5b2e6746447e39fc1e7deb1fa97e28d518bc7f
+Subproject commit 5e38964fbfed38efdcf5c1628ca65d7e3469764a