build: split the engine into liboakengine.so; worker drops the UI entirely

Physical split: app/{audio,cli,codec,common,config,node,pluginSupport, render,task,timeline,undo,tool,shaders} plus coreengine, version and ui/icons+colorcoding move to a new top-level engine/ tree, built as liboakengine.so (shared). The render backends (oakgl/oakvulkan) move with it and link the engine library instead of embedding a static render-core subset (libolive-rendercore is gone). - oak-render-worker now links liboakengine instead of the whole libolive-editor object set: 336MB -> 2.9MB, no Qt Widgets UI - the editor links liboakengine for the engine and keeps only UI objects in libolive-editor - install/packaging: GNUInstallDirs libdir on Linux, bundle copy on macOS, oakengine.dll staged for NSIS, AppImage validation entry - fix backend lookup for the new layout: DynamicRenderer searched ../app but backends now live in engine/; a stale pre-split liboakgl in the build tree got dlopened instead, re-initialized and later destroyed the interposed engine statics (full-suite segfault at DialogSequenceParameterTab, found via gdb watchpoint)
2026-07-20 03:23:28 +08:00
parent 026ff94b5e
commit 28c4426236
604 changed files with 243 additions and 172 deletions
@@ -0,0 +1,194 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2022 Olive Team
+  Modifications Copyright (C) 2025 mikesolar
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#include "renderer.h"
+
+#include <QDateTime>
+#include <QThread>
+#include <QTimer>
+#include <QVector2D>
+
+namespace olive
+{
+
+Renderer::Renderer(QObject *parent)
+	: QObject(parent)
+	, lifetime_(std::make_shared<RendererLifetime>())
+{
+}
+
+Renderer::~Renderer()
+{
+	destroyed_ = true;
+	if (lifetime_) {
+		lifetime_->alive = false;
+	}
+}
+
+TexturePtr Renderer::create_texture(const VideoParams &params, const void *data,
+								   int linesize)
+{
+	QVariant v;
+
+	if (use_texture_cache) {
+		QMutexLocker locker(&texture_cache_lock_);
+		for (auto it = texture_cache_.begin(); it != texture_cache_.end();
+			 it++) {
+			if (it->width == params.effective_width() &&
+				it->height == params.effective_height() &&
+				it->depth == params.effective_depth() &&
+				it->format == params.format() &&
+				it->channel_count == params.channel_count()) {
+				v = it->handle;
+				texture_cache_.erase(it);
+				break;
+			}
+		}
+	}
+
+	if (v.isNull()) {
+		v = create_native_texture(params.effective_width(),
+								params.effective_height(),
+								params.effective_depth(), params.format(),
+								params.channel_count(), data, linesize);
+	} else if (data) {
+		upload_to_texture(v, params, data, linesize);
+	} else {
+		this->flush();
+	}
+
+	return create_texture_from_native_handle(v, params);
+}
+
+void Renderer::destroy_texture(Texture *texture)
+{
+	if (destroyed_) {
+		return;
+	}
+	if (use_texture_cache) {
+		// HACK: Dirty, dirty hack. OpenGL uses "contexts" to store all of its data, and each context
+		//       can only be used by the thread that created it. However there are also "shared contexts"
+		//       where assets from one context can be used in another. We use shared contexts so that
+		//       textures rendered in the background can be displayed on the screen, travelling from
+		//       a background thread to the main UI thread. However, when that texture is destroyed, it
+		//       comes back here to be placed in the texture cache. But that leads to a race condition
+		//       because it will call the background thread's renderer in the main thread. Since all
+		//       assets are shared, we could technically just get the texture to call "destroy" in the
+		//       viewer's renderer instance, but that would mean all textures would end up stranded
+		//       there unusable by the background renderer, negating the very advantage of the texture
+		//       cache in the first place. Therefore, we simply allow the thread calling to happen, and
+		//       use mutexes to prevent race conditions.
+		//
+		//       Presumably Vulkan would not have this issue because it allows for application-wide
+		//       instances and multithreading.
+		texture_cache_lock_.lock();
+		texture_cache_.push_back(
+			{ texture->params().effective_width(),
+			  texture->params().effective_height(),
+			  texture->params().effective_depth(), texture->params().format(),
+			  texture->params().channel_count(), texture->id(),
+			  QDateTime::currentMSecsSinceEpoch() });
+		texture_cache_lock_.unlock();
+
+		if (QThread::currentThread() == this->thread()) {
+			clear_old_textures();
+		}
+	} else {
+		destroy_native_texture(texture->id());
+	}
+}
+
+QVariant Renderer::get_default_shader()
+{
+	QMutexLocker locker(&color_cache_mutex_);
+
+	if (default_shader_.isNull()) {
+		default_shader_ = create_native_shader(ShaderCode(QString(), QString()));
+	}
+
+	return default_shader_;
+}
+
+void Renderer::destroy()
+{
+	if (!default_shader_.isNull()) {
+		destroy_native_shader(default_shader_);
+		default_shader_.clear();
+	}
+
+	{
+		QMutexLocker locker(&color_cache_mutex_);
+
+		// Destroy the cached native shaders explicitly. The LUT textures are
+		// TexturePtrs whose destructors call DestroyTexture(), so the cache must
+		// be cleared while the renderer is still alive for those to be honored.
+		for (auto it = color_cache_.begin(); it != color_cache_.end(); it++) {
+			if (!it->compiled_shader.isNull()) {
+				destroy_native_shader(it->compiled_shader);
+			}
+		}
+		color_cache_.clear();
+	}
+
+	if (!interlace_texture_.isNull()) {
+		destroy_native_shader(interlace_texture_);
+		interlace_texture_.clear();
+	}
+
+	for (auto it = texture_cache_.begin(); it != texture_cache_.end(); it++) {
+		destroy_native_texture(it->handle);
+	}
+	texture_cache_.clear();
+
+	destroyed_ = true;
+	if (lifetime_) {
+		lifetime_->alive = false;
+	}
+
+	destroy_internal();
+}
+
+TexturePtr Renderer::create_texture_from_native_handle(const QVariant &v,
+												   const VideoParams &params)
+{
+	if (v.isNull()) {
+		return nullptr;
+	}
+
+	return std::make_shared<Texture>(this, v, params, lifetime_);
+}
+
+void Renderer::clear_old_textures()
+{
+	QMutexLocker locker(&texture_cache_lock_);
+
+	for (auto it = texture_cache_.begin(); it != texture_cache_.end();) {
+		if (it->accessed <
+			QDateTime::currentMSecsSinceEpoch() - max_texture_life) {
+			destroy_native_texture(it->handle);
+			it = texture_cache_.erase(it);
+		} else {
+			it++;
+		}
+	}
+}
+
+} // namespace olive