Flag shader blending as broken on Adreno for now.

Common/GPU/Vulkan/thin3d_vulkan.cpp

@@ -789,7 +789,6 @@ VKContext::VKContext(VulkanContext *vulkan, bool splitSubmit)
 	caps_.textureNPOTFullySupported = true;
 	caps_.fragmentShaderDepthWriteSupported = true;
 	caps_.logicOpSupported = vulkan->GetDeviceFeatures().enabled.logicOp != 0;
-	caps_.framebufferFetchSupported = true;  // Limited, through input attachments and self-dependencies.
 
 	auto deviceProps = vulkan->GetPhysicalDeviceProperties(vulkan_->GetCurrentPhysicalDeviceIndex()).properties;
 	switch (deviceProps.vendorID) {
@@ -813,6 +812,11 @@ VKContext::VKContext(VulkanContext *vulkan, bool splitSubmit)
 		// Color write mask not masking write in certain scenarios with a depth test, see #10421.
 		// Known still present on driver 0x80180000 and Adreno 5xx (possibly more.)
 		bugs_.Infest(Bugs::COLORWRITEMASK_BROKEN_WITH_DEPTHTEST);
+
+		// Trying to follow all the rules in https://registry.khronos.org/vulkan/specs/1.3/html/vkspec.html#synchronization-pipeline-barriers-subpass-self-dependencies
+		// and https://registry.khronos.org/vulkan/specs/1.3/html/vkspec.html#renderpass-feedbackloop, but still it doesn't
+		// quite work - artifacts on triangle boundaries on Adreno.
+		bugs_.Infest(Bugs::SUBPASS_FEEDBACK_BROKEN);
 	} else if (caps_.vendor == GPUVendor::VENDOR_AMD) {
 		// See issue #10074, and also #10065 (AMD) and #10109 for the choice of the driver version to check for.
 		if (deviceProps.driverVersion < 0x00407000) {
@@ -839,6 +843,10 @@ VKContext::VKContext(VulkanContext *vulkan, bool splitSubmit)
 		}
 	}
 
+	// Limited, through input attachments and self-dependencies.
+	// We turn it off here already if buggy.
+	caps_.framebufferFetchSupported = !bugs_.Has(Bugs::SUBPASS_FEEDBACK_BROKEN);
+
 	caps_.deviceID = deviceProps.deviceID;
 	device_ = vulkan->GetDevice();
 

Common/GPU/thin3d.cpp

@@ -681,6 +681,7 @@ const char *Bugs::GetBugName(uint32_t bug) {
 	case MALI_STENCIL_DISCARD_BUG: return "MALI_STENCIL_DISCARD_BUG";
 	case RASPBERRY_SHADER_COMP_HANG: return "RASPBERRY_SHADER_COMP_HANG";
 	case MALI_CONSTANT_LOAD_BUG: return "MALI_CONSTANT_LOAD_BUG";
+	case SUBPASS_FEEDBACK_BROKEN: return "SUBPASS_FEEDBACK_BROKEN";
 	default: return "(N/A)";
 	}
 }

Common/GPU/thin3d.h

@@ -332,6 +332,7 @@ public:
 		MALI_STENCIL_DISCARD_BUG = 8,
 		RASPBERRY_SHADER_COMP_HANG = 9,
 		MALI_CONSTANT_LOAD_BUG = 10,
+		SUBPASS_FEEDBACK_BROKEN = 11,
 		MAX_BUG,
 	};
 

Common/UI/UIScreen.h

@@ -187,7 +187,7 @@ public:
 		disabled_ = *value_ < 0;
 	}
 
-	const char *tag() const { return "SliderPopup"; }
+	const char *tag() const override { return "SliderPopup"; }
 
 	Event OnChange;
 
@@ -216,7 +216,7 @@ public:
 	: PopupScreen(title, "OK", "Cancel"), units_(units), value_(value), originalValue_(*value), minValue_(minValue), maxValue_(maxValue), step_(step), changing_(false), liveUpdate_(liveUpdate) {}
 	void CreatePopupContents(UI::ViewGroup *parent) override;
 
-	const char *tag() const { return "SliderFloatPopup"; }
+	const char *tag() const override { return "SliderFloatPopup"; }
 
 	Event OnChange;
 
@@ -245,7 +245,7 @@ public:
 		: PopupScreen(title, "OK", "Cancel"), value_(value), placeholder_(placeholder), maxLen_(maxLen) {}
 	virtual void CreatePopupContents(ViewGroup *parent) override;
 
-	const char *tag() const { return "TextEditPopup"; }
+	const char *tag() const override { return "TextEditPopup"; }
 
 	Event OnChange;
 

GPU/D3D11/StateMappingD3D11.cpp

@@ -153,23 +153,21 @@ void DrawEngineD3D11::ApplyDrawState(int prim) {
 			// We ignore the logicState on D3D since there's no support, the emulation of it is blend-and-shader only.
 
 			if (pipelineState_.FramebufferRead()) {
-				FBOTexState fboTexBindState_ = FBO_TEX_NONE;
+				FBOTexState fboTexBindState = FBO_TEX_NONE;
-				ApplyFramebufferRead(&fboTexBindState_);
+				ApplyFramebufferRead(&fboTexBindState);
 				// The shader takes over the responsibility for blending, so recompute.
 				ApplyStencilReplaceAndLogicOpIgnoreBlend(blendState.replaceAlphaWithStencil, blendState);
 
-				if (fboTexBindState_ == FBO_TEX_COPY_BIND_TEX) {
+				if (fboTexBindState == FBO_TEX_COPY_BIND_TEX) {
 					framebufferManager_->BindFramebufferAsColorTexture(1, framebufferManager_->GetCurrentRenderVFB(), BINDFBCOLOR_MAY_COPY);
 					// No sampler required, we do a plain Load in the pixel shader.
 					fboTexBound_ = true;
-					fboTexBindState_ = FBO_TEX_NONE;
+					fboTexBindState = FBO_TEX_NONE;
 
 					framebufferManager_->RebindFramebuffer("RebindFramebuffer - ApplyDrawState");
 					// Must dirty blend state here so we re-copy next time.  Example: Lunar's spell effects.
 					dirtyRequiresRecheck_ |= DIRTY_BLEND_STATE;
 					gstate_c.Dirty(DIRTY_BLEND_STATE);
-				} else if (fboTexBindState_ == FBO_TEX_READ_FRAMEBUFFER) {
-					fboTexBindState_ = FBO_TEX_NONE;
 				}
 
 				dirtyRequiresRecheck_ |= DIRTY_FRAGMENTSHADER_STATE;

GPU/Vulkan/DrawEngineVulkan.cpp

@@ -389,6 +389,7 @@ VkDescriptorSet DrawEngineVulkan::GetOrCreateDescriptorSet(VkImageView imageView
 	key.base_ = base;
 	key.light_ = light;
 	key.bone_ = bone;
+	key.secondaryIsInputAttachment = boundSecondaryIsInputAttachment_;
 
 	FrameData &frame = GetCurFrame();
 	// See if we already have this descriptor set cached.

GPU/Vulkan/DrawEngineVulkan.h

@@ -217,6 +217,8 @@ private:
 
 	// Secondary texture for shader blending
 	VkImageView boundSecondary_ = VK_NULL_HANDLE;
+	bool boundSecondaryIsInputAttachment_ = false;
+
 	// CLUT texture for shader depal
 	VkImageView boundDepal_ = VK_NULL_HANDLE;
 	bool boundDepalSmoothed_ = false;

GPU/Vulkan/GPU_Vulkan.cpp

@@ -229,8 +229,10 @@ void GPU_Vulkan::CheckGPUFeatures() {
 	features |= GPU_SUPPORTS_TEXTURE_FLOAT;
 	features |= GPU_SUPPORTS_DEPTH_TEXTURE;
 
-	// input attachments
+	// through input attachments, when not broken.
+	if (draw_->GetDeviceCaps().framebufferFetchSupported) {
 		features |= GPU_SUPPORTS_ANY_FRAMEBUFFER_FETCH;
+	}
 
 	auto &enabledFeatures = vulkan->GetDeviceFeatures().enabled;
 	if (enabledFeatures.depthClamp) {

GPU/Vulkan/StateMappingVulkan.cpp

@@ -368,6 +368,7 @@ void DrawEngineVulkan::BindShaderBlendTex() {
 			bool bindResult = framebufferManager_->BindFramebufferAsColorTexture(1, framebufferManager_->GetCurrentRenderVFB(), BINDFBCOLOR_MAY_COPY);
 			_dbg_assert_(bindResult);
 			boundSecondary_ = (VkImageView)draw_->GetNativeObject(Draw::NativeObject::BOUND_TEXTURE1_IMAGEVIEW);
+			boundSecondaryIsInputAttachment_ = false;
 			fboTexBound_ = true;
 			fboTexBindState_ = FBO_TEX_NONE;
 
@@ -376,7 +377,10 @@ void DrawEngineVulkan::BindShaderBlendTex() {
 		} else if (fboTexBindState_ == FBO_TEX_READ_FRAMEBUFFER) {
 			draw_->BindCurrentFramebufferForColorInput();
 			boundSecondary_ = (VkImageView)draw_->GetNativeObject(Draw::NativeObject::BOUND_FRAMEBUFFER_COLOR_IMAGEVIEW);
+			boundSecondaryIsInputAttachment_ = true;
 			fboTexBindState_ = FBO_TEX_NONE;
+		} else {
+			boundSecondary_ = VK_NULL_HANDLE;
 		}
 	}
 }

UI/InstallZipScreen.h

@@ -30,7 +30,7 @@ public:
 	virtual void update() override;
 	virtual bool key(const KeyInput &key) override;
 
-	const char *tag() const { return "install_zip"; }
+	const char *tag() const override { return "install_zip"; }
 
 protected:
 	virtual void CreateViews() override;