Run behind pause screen

Common/UI/Screen.cpp

@@ -154,7 +154,8 @@ void ScreenManager::resized() {
 	}
 }
 
-void ScreenManager::render() {
+ScreenRenderFlags ScreenManager::render() {
+	ScreenRenderFlags flags = ScreenRenderFlags::NONE;
 	if (!stack_.empty()) {
 		// Collect the screens to render
 		TinySet<Screen *, 6> layers;
@@ -167,18 +168,20 @@ void ScreenManager::render() {
 		auto iter = stack_.end();
 		Screen *coveringScreen = nullptr;
 		Screen *backgroundScreen = nullptr;
+		bool first = true;
 		do {
 			--iter;
-			if (!coveringScreen) {
-				layers.push_back(iter->screen);
-			} else if (!backgroundScreen && iter->screen->canBeBackground()) {
+			if (!backgroundScreen && iter->screen->canBeBackground(first)) {
 				// There still might be a screen that wants to be background - generally the EmuScreen if present.
 				layers.push_back(iter->screen);
 				backgroundScreen = iter->screen;
+			} else if (!coveringScreen) {
+				layers.push_back(iter->screen);
 			}
 			if (iter->flags != LAYER_TRANSPARENT) {
 				coveringScreen = iter->screen;
 			}
+			first = false;
 		} while (iter != stack_.begin());
 
 		// Confusing-looking expression, argh! Note the '_'
@@ -188,15 +191,11 @@ void ScreenManager::render() {
 		}
 
 		// OK, now we iterate backwards over our little pile of collected screens.
-		bool first = true;
 		for (int i = (int)layers.size() - 1; i >= 0; i--) {
 			ScreenRenderMode mode = ScreenRenderMode::DEFAULT;
 			if (i == (int)layers.size() - 1) {
 				// Bottom.
 				mode = ScreenRenderMode::FIRST;
-				if (layers[i] == backgroundScreen && coveringScreen != layers[i]) {
-					mode |= ScreenRenderMode::BACKGROUND;
-				}
 				if (i == 0) {
 					mode |= ScreenRenderMode::TOP;
 				}
@@ -205,12 +204,12 @@ void ScreenManager::render() {
 			} else {
 				mode = ScreenRenderMode::BEHIND;
 			}
-			layers[i]->render(mode);
+			flags |= layers[i]->render(mode);
 		}
 
 		if (overlayScreen_) {
 			// It doesn't care about mode.
-			overlayScreen_->render(ScreenRenderMode::TOP);
+			flags |= overlayScreen_->render(ScreenRenderMode::TOP);
 		}
 
 		getUIContext()->Flush();
@@ -224,6 +223,7 @@ void ScreenManager::render() {
 	}
 
 	processFinishDialog();
+	return flags;
 }
 
 void ScreenManager::getFocusPosition(float &x, float &y, float &z) {

Common/UI/Screen.h

@@ -50,12 +50,17 @@ enum class ScreenFocusChange {
 enum class ScreenRenderMode {
 	DEFAULT = 0,
 	FIRST = 1,
-	BACKGROUND = 2,
 	BEHIND = 4,
 	TOP = 8,
 };
 ENUM_CLASS_BITOPS(ScreenRenderMode);
 
+enum class ScreenRenderFlags {
+	NONE = 0,
+	HANDLED_THROTTLING = 1,
+};
+ENUM_CLASS_BITOPS(ScreenRenderFlags);
+
 class Screen {
 public:
 	Screen() : screenManager_(nullptr) { }
@@ -65,13 +70,13 @@ class Screen {
 
 	virtual void onFinish(DialogResult reason) {}
 	virtual void update() {}
-	virtual void render(ScreenRenderMode mode) {}
+	virtual ScreenRenderFlags render(ScreenRenderMode mode) = 0;
 	virtual void resized() {}
 	virtual void dialogFinished(const Screen *dialog, DialogResult result) {}
 	virtual void sendMessage(UIMessage message, const char *value) {}
 	virtual void deviceLost() {}
 	virtual void deviceRestored() {}
-	virtual bool canBeBackground() const { return false; }
+	virtual bool canBeBackground(bool isTop) const { return false; }
 	virtual bool wantBrightBackground() const { return false; }  // special hack for DisplayLayoutScreen.
 
 	virtual void focusChanged(ScreenFocusChange focusChange);
@@ -128,7 +133,7 @@ class ScreenManager {
 		postRenderUserdata_ = userdata;
 	}
 
-	void render();
+	ScreenRenderFlags render();
 	void resized();
 	void shutdown();
 

Common/UI/UIScreen.cpp

@@ -212,27 +212,32 @@ void UIScreen::SetupViewport() {
 	draw->SetTargetSize(g_display.pixel_xres, g_display.pixel_yres);
 }
 
-void UIScreen::render(ScreenRenderMode mode) {
+ScreenRenderFlags UIScreen::render(ScreenRenderMode mode) {
 	if (mode & ScreenRenderMode::FIRST) {
 		SetupViewport();
 	}
 
 	DoRecreateViews();
 
+	UIContext &uiContext = *screenManager()->getUIContext();
 	if (root_) {
-		UIContext &uiContext = *screenManager()->getUIContext();
-
 		UI::LayoutViewHierarchy(uiContext, root_, ignoreInsets_);
+	}
 
-		uiContext.PushTransform({translation_, scale_, alpha_});
+	uiContext.PushTransform({translation_, scale_, alpha_});
 
-		uiContext.Begin();
-		DrawBackground(uiContext);
+	uiContext.Begin();
+	DrawBackground(uiContext);
+	if (root_) {
 		root_->Draw(uiContext);
-		uiContext.Flush();
-
-		uiContext.PopTransform();
 	}
+	uiContext.Flush();
+	DrawForeground(uiContext);
+	uiContext.Flush();
+
+	uiContext.PopTransform();
+
+	return ScreenRenderFlags::NONE;
 }
 
 TouchInput UIScreen::transformTouch(const TouchInput &touch) {

Common/UI/UIScreen.h

@@ -36,7 +36,7 @@ class UIScreen : public Screen {
 	~UIScreen();
 
 	void update() override;
-	void render(ScreenRenderMode mode) override;
+	ScreenRenderFlags render(ScreenRenderMode mode) override;
 	void deviceLost() override;
 	void deviceRestored() override;
 
@@ -72,6 +72,8 @@ class UIScreen : public Screen {
 
 protected:
 	virtual void DrawBackground(UIContext &ui) {}
+	virtual void DrawForeground(UIContext &ui) {}
+
 	void SetupViewport();
 	void DoRecreateViews();
 

Common/UI/View.h

@@ -903,6 +903,18 @@ class Spacer : public InertView {
 	void GetContentDimensions(const UIContext &dc, float &w, float &h) const override {
 		w = size_; h = size_;
 	}
+
+	void GetContentDimensionsBySpec(const UIContext &dc, MeasureSpec horiz, MeasureSpec vert, float &w, float &h) const override {
+		if (horiz.type == AT_MOST || horiz.type == EXACTLY)
+			w = horiz.size;
+		else
+			w = size_;
+		if (vert.type == AT_MOST || vert.type == EXACTLY)
+			h = vert.size;
+		else
+			h = size_;
+	}
+
 	void Draw(UIContext &dc) override {}
 	std::string DescribeText() const override { return ""; }
 

Common/UI/ViewGroup.cpp

@@ -25,7 +25,7 @@ namespace UI {
 
 static constexpr Size ITEM_HEIGHT = 64.f;
 
-void ApplyGravity(const Bounds outer, const Margins &margins, float w, float h, int gravity, Bounds &inner) {
+void ApplyGravity(const Bounds &outer, const Margins &margins, float w, float h, int gravity, Bounds &inner) {
 	inner.w = w;
 	inner.h = h;
 
@@ -495,6 +495,10 @@ void LinearLayout::Measure(const UIContext &dc, MeasureSpec horiz, MeasureSpec v
 	if (views_.empty())
 		return;
 
+	if (tag_ == "debug") {
+		tag_ = "debug";
+	}
+
 	float sum = 0.0f;
 	float maxOther = 0.0f;
 	float totalWeight = 0.0f;
@@ -666,6 +670,10 @@ void LinearLayout::Measure(const UIContext &dc, MeasureSpec horiz, MeasureSpec v
 void LinearLayout::Layout() {
 	const Bounds &bounds = bounds_;
 
+	if (tag_ == "debug") {
+		tag_ = "debug";
+	}
+
 	Bounds itemBounds;
 	float pos;
 

Core/Config.cpp

@@ -297,6 +297,8 @@ static const ConfigSetting generalSettings[] = {
 	ConfigSetting("EnablePlugins", &g_Config.bLoadPlugins, true, CfgFlag::PER_GAME),
 
 	ConfigSetting("IgnoreCompatSettings", &g_Config.sIgnoreCompatSettings, "", CfgFlag::PER_GAME | CfgFlag::REPORT),
+
+	ConfigSetting("RunBehindPauseMenu", &g_Config.bRunBehindPauseMenu, false, CfgFlag::DEFAULT),
 };
 
 static bool DefaultSasThread() {

Core/Config.h

@@ -99,9 +99,10 @@ struct Config {
 
 	// Not used on mobile devices.
 	bool bPauseExitsEmulator;
-
 	bool bPauseMenuExitsEmulator;
 
+	bool bRunBehindPauseMenu;
+
 	// Core
 	bool bIgnoreBadMemAccess;
 

GPU/Common/FramebufferManagerCommon.cpp

@@ -123,10 +123,14 @@ void FramebufferManagerCommon::CheckPostShaders() {
 
 void FramebufferManagerCommon::BeginFrame() {
 	DecimateFBOs();
-
+	presentation_->BeginFrame();
 	currentRenderVfb_ = nullptr;
 }
 
+bool FramebufferManagerCommon::PresentedThisFrame() const {
+	return presentation_->PresentedThisFrame();
+}
+
 void FramebufferManagerCommon::SetDisplayFramebuffer(u32 framebuf, u32 stride, GEBufferFormat format) {
 	displayFramebufPtr_ = framebuf & 0x3FFFFFFF;
 	if (Memory::IsVRAMAddress(displayFramebufPtr_))

GPU/Common/FramebufferManagerCommon.h

@@ -485,6 +485,8 @@ class FramebufferManagerCommon {
 		currentFramebufferCopy_ = nullptr;
 	}
 
+	bool PresentedThisFrame() const;
+
 protected:
 	virtual void ReadbackFramebuffer(VirtualFramebuffer *vfb, int x, int y, int w, int h, RasterChannel channel, Draw::ReadbackMode mode);
 	// Used for when a shader is required, such as GLES.

GPU/Common/PresentationCommon.cpp

@@ -931,6 +931,7 @@ void PresentationCommon::CopyToOutput(OutputFlags flags, int uvRotation, float u
 	draw_->Invalidate(InvalidationFlags::CACHED_RENDER_STATE);
 
 	previousUniforms_ = uniforms;
+	presentedThisFrame_ = true;
 }
 
 void PresentationCommon::CalculateRenderResolution(int *width, int *height, int *scaleFactor, bool *upscaling, bool *ssaa) const {

GPU/Common/PresentationCommon.h

@@ -98,6 +98,13 @@ class PresentationCommon {
 
 	bool UpdatePostShader();
 
+	void BeginFrame() {
+		presentedThisFrame_ = false;
+	}
+	bool PresentedThisFrame() const {
+		return presentedThisFrame_;
+	}
+
 	void DeviceLost();
 	void DeviceRestore(Draw::DrawContext *draw);
 
@@ -159,6 +166,7 @@ class PresentationCommon {
 
 	bool usePostShader_ = false;
 	bool restorePostShader_ = false;
+	bool presentedThisFrame_ = false;
 	ShaderLanguage lang_;
 
 	struct PrevFBO {

GPU/GPUCommon.cpp

@@ -722,6 +722,10 @@ void GPUCommon::BeginFrame() {
 	GPURecord::NotifyBeginFrame();
 }
 
+bool GPUCommon::PresentedThisFrame() const {
+	return framebufferManager_ ? framebufferManager_->PresentedThisFrame() : true;
+}
+
 void GPUCommon::SlowRunLoop(DisplayList &list) {
 	const bool dumpThisFrame = dumpThisFrame_;
 	while (downcount > 0) {

GPU/GPUCommon.h

@@ -226,6 +226,8 @@ class GPUCommon : public GPUInterface, public GPUDebugInterface {
 		fullInfo = reportingFullInfo_;
 	}
 
+	bool PresentedThisFrame() const override;
+
 protected:
 	void ClearCacheNextFrame() override {}
 

GPU/GPUCommonHW.cpp

@@ -503,7 +503,6 @@ void GPUCommonHW::UpdateCmdInfo() {
 
 void GPUCommonHW::BeginFrame() {
 	GPUCommon::BeginFrame();
-
 	if (drawEngineCommon_->EverUsedExactEqualDepth() && !sawExactEqualDepth_) {
 		sawExactEqualDepth_ = true;
 		gstate_c.SetUseFlags(CheckGPUFeatures());

GPU/GPUInterface.h

@@ -253,6 +253,7 @@ class GPUInterface {
 	virtual bool FramebufferDirty() = 0;
 	virtual bool FramebufferReallyDirty() = 0;
 	virtual bool BusyDrawing() = 0;
+	virtual bool PresentedThisFrame() const = 0;
 
 	// If any jit is being used inside the GPU.
 	virtual bool DescribeCodePtr(const u8 *ptr, std::string &name) = 0;

UI/BackgroundAudio.cpp

@@ -302,10 +302,6 @@ void BackgroundAudio::SetGame(const Path &path) {
 }
 
 bool BackgroundAudio::Play() {
-	if (GetUIState() == UISTATE_INGAME) {
-		return false;
-	}
-
 	std::lock_guard<std::mutex> lock(mutex_);
 
 	// Immediately stop the sound if it is turned off while playing.