Vulkan: Allow MSAA on modern-ish mobile devices, but add a little warning sign.

MSAA on tiler GPUs, the way we use it (we are not able to eliminate
load/store operations yet) can consume huge amounts of bandwidth, so let's be a
little bit careful.

Common/GPU/Vulkan/thin3d_vulkan.cpp

@@ -932,22 +932,15 @@ VKContext::VKContext(VulkanContext *vulkan, bool useRenderThread)
 
 	// VkSampleCountFlagBits is arranged correctly for our purposes.
 	// Only support MSAA levels that have support for all three of color, depth, stencil.
-	if (!caps_.isTilingGPU) {
-		// Check for depth stencil resolve. Without it, depth textures won't work, and we don't want that mess
-		// of compatibility reports, so we'll just disable multisampling in this case for now.
-		// There are potential workarounds for devices that don't support it, but those are nearly non-existent now.
-		const auto &resolveProperties = vulkan->GetPhysicalDeviceProperties().depthStencilResolve;
-		if (vulkan->Extensions().KHR_depth_stencil_resolve &&
-			((resolveProperties.supportedDepthResolveModes & resolveProperties.supportedStencilResolveModes) & VK_RESOLVE_MODE_SAMPLE_ZERO_BIT) != 0) {
-			caps_.multiSampleLevelsMask = (limits.framebufferColorSampleCounts & limits.framebufferDepthSampleCounts & limits.framebufferStencilSampleCounts);
-		} else {
-			caps_.multiSampleLevelsMask = 1;
-		}
-	} else {
-		caps_.multiSampleLevelsMask = 1;
-	}
 
-	if (caps_.vendor == GPUVendor::VENDOR_QUALCOMM) {
+	bool multisampleAllowed = true;
+
+    caps_.deviceID = deviceProps.deviceID;
+
+    if (caps_.vendor == GPUVendor::VENDOR_QUALCOMM) {
+		if (caps_.deviceID < 0x6000000)  // On sub 6xx series GPUs, disallow multisample.
+			multisampleAllowed = false;
+
 		// Adreno 5xx devices, all known driver versions, fail to discard stencil when depth write is off.
 		// See: https://github.com/hrydgard/ppsspp/pull/11684
 		if (deviceProps.deviceID >= 0x05000000 && deviceProps.deviceID < 0x06000000) {
@@ -1007,13 +1000,38 @@ VKContext::VKContext(VulkanContext *vulkan, bool useRenderThread)
 				bugs_.Infest(Bugs::UNIFORM_INDEXING_BROKEN);
 			}
 		}
+
+		if (isOldVersion) {
+			// Very rough heuristic.
+			multisampleAllowed = false;
+		}
+	}
+
+	if (!vulkan->Extensions().KHR_depth_stencil_resolve) {
+		INFO_LOG(G3D, "KHR_depth_stencil_resolve not supported, disabling multisampling");
+	}
+
+	// We limit multisampling functionality to reasonably recent and known-good tiling GPUs.
+	if (multisampleAllowed) {
+		// Check for depth stencil resolve. Without it, depth textures won't work, and we don't want that mess
+		// of compatibility reports, so we'll just disable multisampling in this case for now.
+		// There are potential workarounds for devices that don't support it, but those are nearly non-existent now.
+		const auto &resolveProperties = vulkan->GetPhysicalDeviceProperties().depthStencilResolve;
+		if (((resolveProperties.supportedDepthResolveModes & resolveProperties.supportedStencilResolveModes) & VK_RESOLVE_MODE_SAMPLE_ZERO_BIT) != 0) {
+			caps_.multiSampleLevelsMask = (limits.framebufferColorSampleCounts & limits.framebufferDepthSampleCounts & limits.framebufferStencilSampleCounts);
+			INFO_LOG(G3D, "Multisample levels mask: %d", caps_.multiSampleLevelsMask);
+		} else {
+			INFO_LOG(G3D, "Not enough depth/stencil resolve modes supported, disabling multisampling.");
+			caps_.multiSampleLevelsMask = 1;
+		}
+	} else {
+		caps_.multiSampleLevelsMask = 1;
 	}
 
 	// Vulkan can support this through input attachments and various extensions, but not worth
 	// the trouble.
 	caps_.framebufferFetchSupported = false;
 
-	caps_.deviceID = deviceProps.deviceID;
 	device_ = vulkan->GetDevice();
 
 	VkBufferUsageFlags usage = VK_BUFFER_USAGE_INDEX_BUFFER_BIT | VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT | VK_BUFFER_USAGE_STORAGE_BUFFER_BIT | VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_SRC_BIT;

Common/UI/PopupScreens.cpp

@@ -36,7 +36,7 @@ void MessagePopupScreen::OnCompleted(DialogResult result) {
 void ListPopupScreen::CreatePopupContents(UI::ViewGroup *parent) {
 	using namespace UI;
 
-	listView_ = parent->Add(new ListView(&adaptor_, hidden_)); //, new LinearLayoutParams(1.0)));
+	listView_ = parent->Add(new ListView(&adaptor_, hidden_, icons_)); //, new LinearLayoutParams(1.0)));
 	listView_->SetMaxHeight(screenManager()->getUIContext()->GetBounds().h - 140);
 	listView_->OnChoice.Handle(this, &ListPopupScreen::OnListChoice);
 }
@@ -105,6 +105,7 @@ UI::EventReturn PopupMultiChoice::HandleClick(UI::EventParams &e) {
 	ListPopupScreen *popupScreen = new ListPopupScreen(ChopTitle(text_), choices, *value_ - minVal_,
 		std::bind(&PopupMultiChoice::ChoiceCallback, this, std::placeholders::_1));
 	popupScreen->SetHiddenChoices(hidden_);
+	popupScreen->SetChoiceIcons(icons_);
 	if (e.v)
 		popupScreen->SetPopupOrigin(e.v);
 	screenManager_->push(popupScreen);
@@ -623,8 +624,12 @@ void AbstractChoiceWithValueDisplay::Draw(UIContext &dc) {
 		textPadding_.right = w + paddingX;
 
 		Choice::Draw(dc);
+		int imagePadding = 0;
+		if (rightIconImage_.isValid()) {
+			imagePadding = bounds_.h;
+		}
 		dc.SetFontScale(scale, scale);
-		Bounds valueBounds(bounds_.x2() - textPadding_.right, bounds_.y, w, bounds_.h);
+		Bounds valueBounds(bounds_.x2() - textPadding_.right - imagePadding, bounds_.y, w, bounds_.h);
 		dc.DrawTextRect(valueText.c_str(), valueBounds, style.fgColor, ALIGN_RIGHT | ALIGN_VCENTER | FLAG_WRAP_TEXT);
 		dc.SetFontScale(1.0f, 1.0f);
 	} else {

Common/UI/PopupScreens.h

@@ -32,6 +32,9 @@ public:
 	void SetHiddenChoices(std::set<int> hidden) {
 		hidden_ = hidden;
 	}
+	void SetChoiceIcons(std::map<int, ImageID> icons) {
+		icons_ = icons;
+	}
 	const char *tag() const override { return "listpopup"; }
 
 	UI::Event OnChoice;
@@ -49,6 +52,7 @@ private:
 	std::function<void(int)> callback_;
 	bool showButtons_ = false;
 	std::set<int> hidden_;
+	std::map<int, ImageID> icons_;
 };
 
 class MessagePopupScreen : public PopupScreen {
@@ -231,6 +235,9 @@ public:
 	void HideChoice(int c) {
 		hidden_.insert(c);
 	}
+	void SetChoiceIcon(int c, ImageID id) {
+		icons_[c] = id;
+	}
 
 	UI::Event OnChoice;
 
@@ -254,6 +261,7 @@ private:
 	std::string valueText_;
 	bool restoreFocus_ = false;
 	std::set<int> hidden_;
+	std::map<int, ImageID> icons_;
 };
 
 // Allows passing in a dynamic vector of strings. Saves the string.

Common/UI/ScrollView.cpp

@@ -496,9 +496,8 @@ void ScrollView::Update() {
 	}
 }
 
-ListView::ListView(ListAdaptor *a, std::set<int> hidden, LayoutParams *layoutParams)
-	: ScrollView(ORIENT_VERTICAL, layoutParams), adaptor_(a), maxHeight_(0), hidden_(hidden) {
-
+ListView::ListView(ListAdaptor *a, std::set<int> hidden, std::map<int, ImageID> icons, LayoutParams *layoutParams)
+	: ScrollView(ORIENT_VERTICAL, layoutParams), adaptor_(a), maxHeight_(0), hidden_(hidden), icons_(icons) {
 	linLayout_ = new LinearLayout(ORIENT_VERTICAL);
 	linLayout_->SetSpacing(0.0f);
 	Add(linLayout_);
@@ -510,7 +509,12 @@ void ListView::CreateAllItems() {
 	// Let's not be clever yet, we'll just create them all up front and add them all in.
 	for (int i = 0; i < adaptor_->GetNumItems(); i++) {
 		if (hidden_.find(i) == hidden_.end()) {
-			View *v = linLayout_->Add(adaptor_->CreateItemView(i));
+			ImageID *imageID = nullptr;
+			auto iter = icons_.find(i);
+			if (iter != icons_.end()) {
+				imageID = &iter->second;
+			}
+			View *v = linLayout_->Add(adaptor_->CreateItemView(i, imageID));
 			adaptor_->AddEventCallback(v, std::bind(&ListView::OnItemCallback, this, i, std::placeholders::_1));
 		}
 	}
@@ -538,8 +542,12 @@ EventReturn ListView::OnItemCallback(int num, EventParams &e) {
 	return EVENT_DONE;
 }
 
-View *ChoiceListAdaptor::CreateItemView(int index) {
-	return new Choice(items_[index]);
+View *ChoiceListAdaptor::CreateItemView(int index, ImageID *optionalImageID) {
+	Choice *choice = new Choice(items_[index]);
+	if (optionalImageID) {
+		choice->SetIcon(*optionalImageID);
+	}
+	return choice;
 }
 
 bool ChoiceListAdaptor::AddEventCallback(View *view, std::function<EventReturn(EventParams &)> callback) {
@@ -549,8 +557,12 @@ bool ChoiceListAdaptor::AddEventCallback(View *view, std::function<EventReturn(E
 }
 
 
-View *StringVectorListAdaptor::CreateItemView(int index) {
-	return new Choice(items_[index], "", index == selected_);
+View *StringVectorListAdaptor::CreateItemView(int index, ImageID *optionalImageID) {
+	Choice *choice = new Choice(items_[index], "", index == selected_);
+	if (optionalImageID) {
+		choice->SetIcon(*optionalImageID);
+	}
+	return choice;
 }
 
 bool StringVectorListAdaptor::AddEventCallback(View *view, std::function<EventReturn(EventParams &)> callback) {

Common/UI/ScrollView.h

@@ -89,7 +89,7 @@ private:
 class ListAdaptor {
 public:
 	virtual ~ListAdaptor() {}
-	virtual View *CreateItemView(int index) = 0;
+	virtual View *CreateItemView(int index, ImageID *optionalImageID) = 0;
 	virtual int GetNumItems() = 0;
 	virtual bool AddEventCallback(View *view, std::function<EventReturn(EventParams &)> callback) { return false; }
 	virtual std::string GetTitle(int index) const { return ""; }
@@ -100,7 +100,7 @@ public:
 class ChoiceListAdaptor : public ListAdaptor {
 public:
 	ChoiceListAdaptor(const char *items[], int numItems) : items_(items), numItems_(numItems) {}
-	View *CreateItemView(int index) override;
+	View *CreateItemView(int index, ImageID *optionalImageID) override;
 	int GetNumItems() override { return numItems_; }
 	bool AddEventCallback(View *view, std::function<EventReturn(EventParams &)> callback) override;
 
@@ -114,7 +114,7 @@ class StringVectorListAdaptor : public ListAdaptor {
 public:
 	StringVectorListAdaptor() : selected_(-1) {}
 	StringVectorListAdaptor(const std::vector<std::string> &items, int selected = -1) : items_(items), selected_(selected) {}
-	View *CreateItemView(int index) override;
+	View *CreateItemView(int index, ImageID *optionalImageID) override;
 	int GetNumItems() override { return (int)items_.size(); }
 	bool AddEventCallback(View *view, std::function<EventReturn(EventParams &)> callback) override;
 	void SetSelected(int sel) override { selected_ = sel; }
@@ -130,7 +130,7 @@ private:
 // In the future, it might be smart and load/unload items as they go, but currently not.
 class ListView : public ScrollView {
 public:
-	ListView(ListAdaptor *a, std::set<int> hidden = std::set<int>(), LayoutParams *layoutParams = 0);
+	ListView(ListAdaptor *a, std::set<int> hidden = std::set<int>(), std::map<int, ImageID> icons = std::map<int, ImageID>(), LayoutParams *layoutParams = 0);
 
 	int GetSelected() { return adaptor_->GetSelected(); }
 	void Measure(const UIContext &dc, MeasureSpec horiz, MeasureSpec vert) override;
@@ -146,6 +146,7 @@ private:
 	LinearLayout *linLayout_;
 	float maxHeight_;
 	std::set<int> hidden_;
+	std::map<int, ImageID> icons_;
 };
 
 }  // namespace UI

UI/GameSettingsScreen.cpp

@@ -301,12 +301,19 @@ void GameSettingsScreen::CreateGraphicsSettings(UI::ViewGroup *graphicsSettings)
 			System_PostUIMessage(UIMessage::GPU_RENDER_RESIZED);
 			return UI::EVENT_DONE;
 		});
-		msaaChoice->SetDisabledPtr(&g_Config.bSoftwareRendering);
+		if (g_Config.iMultiSampleLevel > 1 && draw->GetDeviceCaps().isTilingGPU) {
+			msaaChoice->SetIcon(ImageID("I_WARNING"), 0.7f);
+		}
+		msaaChoice->SetEnabledFunc([] {
+			return !g_Config.bSoftwareRendering && !g_Config.bSkipBufferEffects;
+		});
 
 		// Hide unsupported levels.
 		for (int i = 1; i < 5; i++) {
 			if ((draw->GetDeviceCaps().multiSampleLevelsMask & (1 << i)) == 0) {
 				msaaChoice->HideChoice(i);
+			} else if (i > 0 && draw->GetDeviceCaps().isTilingGPU) {
+				msaaChoice->SetChoiceIcon(i, ImageID("I_WARNING"));
 			}
 		}
 	}