faster texture cache loading in low fps modes

external/solanaceae_contact

@@ -1 +1 @@
-Subproject commit 2d73c7272c3c254086fa067ccfdfb4072c20f7c9
+Subproject commit 9ca6adee4f6f01d83fd1f5ece5c4b84396079ccc

external/solanaceae_message3

@@ -1 +1 @@
-Subproject commit 20af7dd705fe1be68f7678292125620d48aa278b
+Subproject commit a1f5add8d347da2eb8acb812cd6dbcb36a46778d

external/solanaceae_util

@@ -1 +1 @@
-Subproject commit 390b123fb7380e5da30954d1b0a337208407f40d
+Subproject commit d304d719e9b7c3c40d32fc45993f0ccfd34c556e

src/chat_gui4.cpp

@@ -136,7 +136,7 @@ ChatGui4::~ChatGui4(void) {
 	//}
 }
 
-void ChatGui4::render(float time_delta) {
+float ChatGui4::render(float time_delta) {
 	if (!_cr.storage<Contact::Components::TagAvatarInvalidate>().empty()) { // handle force-reloads for avatars
 		std::vector<Contact3> to_purge;
 		_cr.view<Contact::Components::TagAvatarInvalidate>().each([&to_purge](const Contact3 c) {
@@ -627,8 +627,14 @@ void ChatGui4::render(float time_delta) {
 	}
 	ImGui::End();
 
-	_contact_tc.workLoadQueue();
-	_msg_tc.workLoadQueue();
+	bool unfinished_work_queue = _contact_tc.workLoadQueue();
+	unfinished_work_queue = unfinished_work_queue || _msg_tc.workLoadQueue();
+
+	if (unfinished_work_queue) {
+		return 0.1f; // so we can get images loaded faster
+	} else {
+		return 1.f; // TODO: higher min fps?
+	}
 }
 
 void ChatGui4::sendFilePath(const char* file_path) {

src/chat_gui4.hpp

@@ -57,7 +57,7 @@ class ChatGui4 {
 		~ChatGui4(void);
 
 	public:
-		void render(float time_delta);
+		float render(float time_delta);
 
 	public:
 		bool any_unread {false};

src/main_screen.cpp

@@ -168,7 +168,7 @@ Screen* MainScreen::render(float time_delta, bool&) {
 
 	const float pm_interval = pm.render(time_delta); // render
 
-	cg.render(time_delta); // render
+	const float cg_interval = cg.render(time_delta); // render
 	sw.render(); // render
 	tuiu.render(); // render
 	tdch.render(); // render
@@ -217,6 +217,8 @@ Screen* MainScreen::render(float time_delta, bool&) {
 		ImGui::ShowDemoWindow();
 	}
 
+	_render_interval = std::min<float>(pm_interval, cg_interval);
+
 	if (
 		_fps_perf_mode > 1 // TODO: magic
 	) {
@@ -228,9 +230,9 @@ Screen* MainScreen::render(float time_delta, bool&) {
 			_window_hidden
 		)
 	) {
-		_render_interval = std::min<float>(1.f/1.f, pm_interval);
+		_render_interval = std::min<float>(1.f/1.f, _render_interval);
 	} else {
-		_render_interval = std::min<float>(1.f/60.f, pm_interval);
+		_render_interval = std::min<float>(1.f/60.f, _render_interval);
 	}
 
 	_time_since_event += time_delta;

src/texture_cache.hpp

@@ -162,8 +162,10 @@ struct TextureCache {
 		}
 	}
 
-	void workLoadQueue(void) {
-		for (auto it = _to_load.begin(); it != _to_load.end(); it++) {
+	// returns true if there is still work queued up
+	bool workLoadQueue(void) {
+		auto it = _to_load.begin();
+		for (; it != _to_load.end(); it++) {
 			auto new_entry_opt = _l.load(_tu, *it);
 			if (new_entry_opt.has_value()) {
 				_cache.emplace(*it, new_entry_opt.value());
@@ -172,6 +174,10 @@ struct TextureCache {
 				break; // end load from queue/onlyload 1 per update
 			}
 		}
+
+		it++;
+
+		return it != _to_load.end();
 	}
 };