nvnflinger/vi: don't recreate buffer queue on open/close

src/core/hle/service/nvnflinger/display.h

@@ -3,8 +3,6 @@
 
 #pragma once
 
-#include <list>
-
 #include "core/hle/service/nvnflinger/buffer_item_consumer.h"
 #include "core/hle/service/nvnflinger/hwc_layer.h"
 
@@ -26,18 +24,12 @@ struct Layer {
 };
 
 struct LayerStack {
-    std::list<Layer> layers;
-};
+    std::vector<std::shared_ptr<Layer>> layers;
 
-struct Display {
-    explicit Display(u64 id_) {
-        id = id_;
-    }
-
-    Layer* FindLayer(s32 consumer_id) {
-        for (auto& layer : stack.layers) {
-            if (layer.consumer_id == consumer_id) {
-                return &layer;
+    std::shared_ptr<Layer> FindLayer(s32 consumer_id) {
+        for (auto& layer : layers) {
+            if (layer->consumer_id == consumer_id) {
+                return layer;
             }
         }
 
@@ -45,7 +37,13 @@ struct Display {
     }
 
     bool HasLayers() {
-        return !stack.layers.empty();
+        return !layers.empty();
+    }
+};
+
+struct Display {
+    explicit Display(u64 id_) {
+        id = id_;
     }
 
     u64 id;

src/core/hle/service/nvnflinger/hardware_composer.cpp

@@ -55,10 +55,10 @@ u32 HardwareComposer::ComposeLocked(f32* out_speed_scale, Display& display,
 
     // Acquire all necessary framebuffers.
     for (auto& layer : display.stack.layers) {
-        auto consumer_id = layer.consumer_id;
+        auto consumer_id = layer->consumer_id;
 
         // Try to fetch the framebuffer (either new or stale).
-        const auto result = this->CacheFramebufferLocked(layer, consumer_id);
+        const auto result = this->CacheFramebufferLocked(*layer, consumer_id);
 
         // If we failed, skip this layer.
         if (result == CacheStatus::NoBufferAvailable) {
@@ -75,7 +75,7 @@ u32 HardwareComposer::ComposeLocked(f32* out_speed_scale, Display& display,
         const auto& igbp_buffer = *item.graphic_buffer;
 
         // TODO: get proper Z-index from layer
-        if (layer.visible) {
+        if (layer->visible) {
             composition_stack.emplace_back(HwcLayer{
                 .buffer_handle = igbp_buffer.BufferId(),
                 .offset = igbp_buffer.Offset(),
@@ -84,7 +84,7 @@ u32 HardwareComposer::ComposeLocked(f32* out_speed_scale, Display& display,
                 .height = igbp_buffer.Height(),
                 .stride = igbp_buffer.Stride(),
                 .z_index = 0,
-                .blending = layer.blending,
+                .blending = layer->blending,
                 .transform = static_cast<android::BufferTransformFlags>(item.transform),
                 .crop_rect = item.crop,
                 .acquire_fence = item.fence,
@@ -134,7 +134,7 @@ u32 HardwareComposer::ComposeLocked(f32* out_speed_scale, Display& display,
             continue;
         }
 
-        if (auto* layer = display.FindLayer(layer_id); layer != nullptr) {
+        if (const auto layer = display.stack.FindLayer(layer_id); layer != nullptr) {
             // TODO: support release fence
             // This is needed to prevent screen tearing
             layer->buffer_item_consumer->ReleaseBuffer(framebuffer.item, android::Fence::NoFence());
@@ -153,7 +153,7 @@ void HardwareComposer::RemoveLayerLocked(Display& display, ConsumerId consumer_i
     }
 
     // Try to release the buffer item.
-    auto* const layer = display.FindLayer(consumer_id);
+    const auto layer = display.stack.FindLayer(consumer_id);
     if (layer && it->second.is_acquired) {
         layer->buffer_item_consumer->ReleaseBuffer(it->second.item, android::Fence::NoFence());
     }

src/core/hle/service/nvnflinger/surface_flinger.cpp

@@ -36,7 +36,7 @@ void SurfaceFlinger::RemoveDisplay(u64 display_id) {
 bool SurfaceFlinger::ComposeDisplay(s32* out_swap_interval, f32* out_compose_speed_scale,
                                     u64 display_id) {
     auto* const display = this->FindDisplay(display_id);
-    if (!display || !display->HasLayers()) {
+    if (!display || !display->stack.HasLayers()) {
         return false;
     }
 
@@ -46,19 +46,34 @@ bool SurfaceFlinger::ComposeDisplay(s32* out_swap_interval, f32* out_compose_spe
     return true;
 }
 
-void SurfaceFlinger::AddLayerToDisplayStack(u64 display_id, s32 consumer_binder_id) {
-    auto* const display = this->FindDisplay(display_id);
+void SurfaceFlinger::CreateLayer(s32 consumer_binder_id) {
     auto binder = std::static_pointer_cast<android::BufferQueueConsumer>(
         m_server.TryGetBinder(consumer_binder_id));
-
-    if (!display || !binder) {
+    if (!binder) {
         return;
     }
 
     auto buffer_item_consumer = std::make_shared<android::BufferItemConsumer>(std::move(binder));
     buffer_item_consumer->Connect(false);
 
-    display->stack.layers.emplace_back(std::move(buffer_item_consumer), consumer_binder_id);
+    m_layers.layers.emplace_back(
+        std::make_shared<Layer>(std::move(buffer_item_consumer), consumer_binder_id));
+}
+
+void SurfaceFlinger::DestroyLayer(s32 consumer_binder_id) {
+    std::erase_if(m_layers.layers,
+                  [&](auto& layer) { return layer->consumer_id == consumer_binder_id; });
+}
+
+void SurfaceFlinger::AddLayerToDisplayStack(u64 display_id, s32 consumer_binder_id) {
+    auto* const display = this->FindDisplay(display_id);
+    auto layer = this->FindLayer(consumer_binder_id);
+
+    if (!display || !layer) {
+        return;
+    }
+
+    display->stack.layers.emplace_back(std::move(layer));
 }
 
 void SurfaceFlinger::RemoveLayerFromDisplayStack(u64 display_id, s32 consumer_binder_id) {
@@ -69,18 +84,18 @@ void SurfaceFlinger::RemoveLayerFromDisplayStack(u64 display_id, s32 consumer_bi
 
     m_composer.RemoveLayerLocked(*display, consumer_binder_id);
     std::erase_if(display->stack.layers,
-                  [&](auto& layer) { return layer.consumer_id == consumer_binder_id; });
+                  [&](auto& layer) { return layer->consumer_id == consumer_binder_id; });
 }
 
 void SurfaceFlinger::SetLayerVisibility(s32 consumer_binder_id, bool visible) {
-    if (auto* layer = this->FindLayer(consumer_binder_id); layer != nullptr) {
+    if (const auto layer = this->FindLayer(consumer_binder_id); layer != nullptr) {
         layer->visible = visible;
         return;
     }
 }
 
 void SurfaceFlinger::SetLayerBlending(s32 consumer_binder_id, LayerBlending blending) {
-    if (auto* layer = this->FindLayer(consumer_binder_id); layer != nullptr) {
+    if (const auto layer = this->FindLayer(consumer_binder_id); layer != nullptr) {
         layer->blending = blending;
         return;
     }
@@ -96,9 +111,9 @@ Display* SurfaceFlinger::FindDisplay(u64 display_id) {
     return nullptr;
 }
 
-Layer* SurfaceFlinger::FindLayer(s32 consumer_binder_id) {
-    for (auto& display : m_displays) {
-        if (auto* layer = display.FindLayer(consumer_binder_id); layer != nullptr) {
+std::shared_ptr<Layer> SurfaceFlinger::FindLayer(s32 consumer_binder_id) {
+    for (auto& layer : m_layers.layers) {
+        if (layer->consumer_id == consumer_binder_id) {
             return layer;
         }
     }

src/core/hle/service/nvnflinger/surface_flinger.h

@@ -36,6 +36,9 @@ public:
     void RemoveDisplay(u64 display_id);
     bool ComposeDisplay(s32* out_swap_interval, f32* out_compose_speed_scale, u64 display_id);
 
+    void CreateLayer(s32 consumer_binder_id);
+    void DestroyLayer(s32 consumer_binder_id);
+
     void AddLayerToDisplayStack(u64 display_id, s32 consumer_binder_id);
     void RemoveLayerFromDisplayStack(u64 display_id, s32 consumer_binder_id);
 
@@ -44,7 +47,7 @@ public:
 
 private:
     Display* FindDisplay(u64 display_id);
-    Layer* FindLayer(s32 consumer_binder_id);
+    std::shared_ptr<Layer> FindLayer(s32 consumer_binder_id);
 
 public:
     // TODO: these don't belong here
@@ -57,6 +60,7 @@ private:
     KernelHelpers::ServiceContext m_context;
 
     std::vector<Display> m_displays;
+    LayerStack m_layers;
     std::shared_ptr<Nvidia::Module> nvdrv;
     s32 disp_fd;
     HardwareComposer m_composer;