Garbage Collection: Redesign the algorithm to do a better use of memory.

src/video_core/renderer_opengl/gl_texture_cache.cpp

@@ -484,6 +484,15 @@ TextureCacheRuntime::TextureCacheRuntime(const Device& device_, ProgramManager&
             rescale_read_fbos[i].Create();
         }
     }
+
+    device_access_memory = []() -> u64 {
+        if (GLAD_GL_NVX_gpu_memory_info) {
+            GLint cur_avail_mem_kb = 0;
+            glGetIntegerv(GL_GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX, &cur_avail_mem_kb);
+            return static_cast<u64>(cur_avail_mem_kb) * 1_KiB;
+        }
+        return 2_GiB; // Return minimum requirements
+    }();
 }
 
 TextureCacheRuntime::~TextureCacheRuntime() = default;
@@ -500,13 +509,13 @@ ImageBufferMap TextureCacheRuntime::DownloadStagingBuffer(size_t size) {
     return download_buffers.RequestMap(size, false);
 }
 
-u64 TextureCacheRuntime::GetDeviceLocalMemory() const {
+u64 TextureCacheRuntime::GetDeviceMemoryUsage() const {
     if (GLAD_GL_NVX_gpu_memory_info) {
         GLint cur_avail_mem_kb = 0;
         glGetIntegerv(GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX, &cur_avail_mem_kb);
         return static_cast<u64>(cur_avail_mem_kb) * 1_KiB;
     }
-    return 2_GiB; // Return minimum requirements
+    return 2_GiB;
 }
 
 void TextureCacheRuntime::CopyImage(Image& dst_image, Image& src_image,
@@ -686,6 +695,7 @@ Image::Image(TextureCacheRuntime& runtime_, const VideoCommon::ImageInfo& info_,
     }
     if (IsConverted(runtime->device, info.format, info.type)) {
         flags |= ImageFlagBits::Converted;
+        flags |= ImageFlagBits::GCProtected;
         gl_internal_format = IsPixelFormatSRGB(info.format) ? GL_SRGB8_ALPHA8 : GL_RGBA8;
         gl_format = GL_RGBA;
         gl_type = GL_UNSIGNED_INT_8_8_8_8_REV;

src/video_core/renderer_opengl/gl_texture_cache.h

@@ -83,7 +83,15 @@ public:
 
     ImageBufferMap DownloadStagingBuffer(size_t size);
 
-    u64 GetDeviceLocalMemory() const;
+    u64 GetDeviceLocalMemory() const {
+        return device_access_memory;
+    }
+
+    u64 GetDeviceMemoryUsage() const;
+
+    bool CanReportMemoryUsage() const {
+        return GLAD_GL_NVX_gpu_memory_info;
+    }
 
     bool ShouldReinterpret([[maybe_unused]] Image& dst, [[maybe_unused]] Image& src) {
         return true;
@@ -172,6 +180,7 @@ private:
     std::array<OGLFramebuffer, 4> rescale_draw_fbos;
     std::array<OGLFramebuffer, 4> rescale_read_fbos;
     const Settings::ResolutionScalingInfo& resolution;
+    u64 device_access_memory;
 };
 
 class Image : public VideoCommon::ImageBase {

src/video_core/renderer_vulkan/vk_staging_buffer_pool.cpp

@@ -118,7 +118,7 @@ StagingBufferPool::StagingBufferPool(const Device& device_, MemoryAllocator& mem
         .image = nullptr,
         .buffer = *stream_buffer,
     };
-    const auto memory_properties = device.GetPhysical().GetMemoryProperties();
+    const auto memory_properties = device.GetPhysical().GetMemoryProperties().memoryProperties;
     VkMemoryAllocateInfo stream_memory_info{
         .sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
         .pNext = make_dedicated ? &dedicated_info : nullptr,

src/video_core/renderer_vulkan/vk_texture_cache.cpp

@@ -1189,6 +1189,14 @@ u64 TextureCacheRuntime::GetDeviceLocalMemory() const {
     return device.GetDeviceLocalMemory();
 }
 
+u64 TextureCacheRuntime::GetDeviceMemoryUsage() const {
+    return device.GetDeviceMemoryUsage();
+}
+
+bool TextureCacheRuntime::CanReportMemoryUsage() const {
+    return device.CanReportMemoryUsage();
+}
+
 void TextureCacheRuntime::TickFrame() {}
 
 Image::Image(TextureCacheRuntime& runtime_, const ImageInfo& info_, GPUVAddr gpu_addr_,
@@ -1203,6 +1211,7 @@ Image::Image(TextureCacheRuntime& runtime_, const ImageInfo& info_, GPUVAddr gpu
         } else {
             flags |= VideoCommon::ImageFlagBits::Converted;
         }
+        flags |= VideoCommon::ImageFlagBits::GCProtected;
     }
     if (runtime->device.HasDebuggingToolAttached()) {
         original_image.SetObjectNameEXT(VideoCommon::Name(*this).c_str());

src/video_core/renderer_vulkan/vk_texture_cache.h

@@ -55,6 +55,10 @@ public:
 
     u64 GetDeviceLocalMemory() const;
 
+    u64 GetDeviceMemoryUsage() const;
+
+    bool CanReportMemoryUsage() const;
+
     void BlitImage(Framebuffer* dst_framebuffer, ImageView& dst, ImageView& src,
                    const Region2D& dst_region, const Region2D& src_region,
                    Tegra::Engines::Fermi2D::Filter filter,

src/video_core/texture_cache/image_base.h

@@ -29,15 +29,16 @@ enum class ImageFlagBits : u32 {
     Sparse = 1 << 9,      ///< Image has non continous submemory.
 
     // Garbage Collection Flags
-    BadOverlap = 1 << 10, ///< This image overlaps other but doesn't fit, has higher
-                          ///< garbage collection priority
-    Alias = 1 << 11,      ///< This image has aliases and has priority on garbage
-                          ///< collection
+    BadOverlap = 1 << 10,  ///< This image overlaps other but doesn't fit, has higher
+                           ///< garbage collection priority
+    Alias = 1 << 11,       ///< This image has aliases and has priority on garbage
+                           ///< collection
+    GCProtected = 1 << 12, ///< Protected from low-tier GC as they are costy to load back.
 
     // Rescaler
-    Rescaled = 1 << 12,
-    CheckingRescalable = 1 << 13,
-    IsRescalable = 1 << 14,
+    Rescaled = 1 << 13,
+    CheckingRescalable = 1 << 14,
+    IsRescalable = 1 << 15,
 };
 DECLARE_ENUM_FLAG_OPERATORS(ImageFlagBits)
 

src/video_core/texture_cache/texture_cache.h

@@ -50,14 +50,21 @@ TextureCache<P>::TextureCache(Runtime& runtime_, VideoCore::RasterizerInterface&
     void(slot_samplers.insert(runtime, sampler_descriptor));
 
     if constexpr (HAS_DEVICE_MEMORY_INFO) {
-        const auto device_memory = runtime.GetDeviceLocalMemory();
-        const u64 possible_expected_memory = (device_memory * 4) / 10;
-        const u64 possible_critical_memory = (device_memory * 7) / 10;
-        expected_memory = std::max(possible_expected_memory, DEFAULT_EXPECTED_MEMORY - 256_MiB);
-        critical_memory = std::max(possible_critical_memory, DEFAULT_CRITICAL_MEMORY - 512_MiB);
-        minimum_memory = 0;
+        const s64 device_memory = static_cast<s64>(runtime.GetDeviceLocalMemory());
+        const s64 min_spacing_expected = device_memory - 1_GiB - 512_MiB;
+        const s64 min_spacing_critical = device_memory - 1_GiB;
+        const s64 mem_tresshold = std::min(device_memory, TARGET_THRESHOLD);
+        const s64 min_vacancy_expected = (6 * mem_tresshold) / 10;
+        const s64 min_vacancy_critical = (3 * mem_tresshold) / 10;
+        expected_memory = static_cast<u64>(
+            std::max(std::min(device_memory - min_vacancy_expected, min_spacing_expected),
+                     DEFAULT_EXPECTED_MEMORY));
+        critical_memory = static_cast<u64>(
+            std::max(std::min(device_memory - min_vacancy_critical, min_spacing_critical),
+                     DEFAULT_CRITICAL_MEMORY));
+        minimum_memory = static_cast<u64>((device_memory - mem_tresshold) / 2);
+        LOG_CRITICAL(Debug, "Available Memory: {}", device_memory / 1_MiB);
     } else {
-        // On OpenGL we can be more conservatives as the driver takes care.
         expected_memory = DEFAULT_EXPECTED_MEMORY + 512_MiB;
         critical_memory = DEFAULT_CRITICAL_MEMORY + 1_GiB;
         minimum_memory = 0;
@@ -76,7 +83,8 @@ void TextureCache<P>::RunGarbageCollector() {
         }
         --num_iterations;
         auto& image = slot_images[image_id];
-        const bool must_download = image.IsSafeDownload();
+        const bool must_download =
+            image.IsSafeDownload() && False(image.flags & ImageFlagBits::BadOverlap);
         if (!high_priority_mode && must_download) {
             return false;
         }
@@ -99,6 +107,10 @@ void TextureCache<P>::RunGarbageCollector() {
 
 template <class P>
 void TextureCache<P>::TickFrame() {
+    // If we can obtain the memory info, use it instead of the estimate.
+    if (runtime.CanReportMemoryUsage()) {
+        total_used_memory = runtime.GetDeviceMemoryUsage();
+    }
     if (total_used_memory > minimum_memory) {
         RunGarbageCollector();
     }
@@ -106,7 +118,9 @@ void TextureCache<P>::TickFrame() {
     sentenced_framebuffers.Tick();
     sentenced_image_view.Tick();
     runtime.TickFrame();
+    critical_gc = 0;
     ++frame_tick;
+    LOG_CRITICAL(Debug, "Current memory: {}", total_used_memory / 1_MiB);
 }
 
 template <class P>
@@ -1052,6 +1066,11 @@ ImageId TextureCache<P>::JoinImages(const ImageInfo& info, GPUVAddr gpu_addr, VA
 
     for (const ImageId overlap_id : overlap_ids) {
         Image& overlap = slot_images[overlap_id];
+        if (True(overlap.flags & ImageFlagBits::GpuModified)) {
+            new_image.flags |= ImageFlagBits::GpuModified;
+            new_image.modification_tick =
+                std::max(overlap.modification_tick, new_image.modification_tick);
+        }
         if (overlap.info.num_samples != new_image.info.num_samples) {
             LOG_WARNING(HW_GPU, "Copying between images with different samples is not implemented");
         } else {
@@ -1414,6 +1433,10 @@ void TextureCache<P>::RegisterImage(ImageId image_id) {
         tentative_size = EstimatedDecompressedSize(tentative_size, image.info.format);
     }
     total_used_memory += Common::AlignUp(tentative_size, 1024);
+    if (total_used_memory > critical_memory && critical_gc < GC_EMERGENCY_COUNTS) {
+        RunGarbageCollector();
+        critical_gc++;
+    }
     image.lru_index = lru_cache.Insert(image_id, frame_tick);
 
     ForEachGPUPage(image.gpu_addr, image.guest_size_bytes,
@@ -1704,6 +1727,9 @@ void TextureCache<P>::SynchronizeAliases(ImageId image_id) {
             most_recent_tick = std::max(most_recent_tick, aliased_image.modification_tick);
             aliased_images.push_back(&aliased);
             any_rescaled |= True(aliased_image.flags & ImageFlagBits::Rescaled);
+            if (True(aliased_image.flags & ImageFlagBits::GpuModified)) {
+                image.flags |= ImageFlagBits::GpuModified;
+            }
         }
     }
     if (aliased_images.empty()) {

src/video_core/texture_cache/texture_cache_base.h

@@ -59,8 +59,12 @@ class TextureCache {
     /// True when the API can provide info about the memory of the device.
     static constexpr bool HAS_DEVICE_MEMORY_INFO = P::HAS_DEVICE_MEMORY_INFO;
 
-    static constexpr u64 DEFAULT_EXPECTED_MEMORY = 1_GiB;
-    static constexpr u64 DEFAULT_CRITICAL_MEMORY = 2_GiB;
+    static constexpr s64 TARGET_THRESHOLD = 4_GiB;
+    static constexpr s64 MIN_VACANCY_EXPECTED = (6 * TARGET_THRESHOLD) / 10;
+    static constexpr s64 MIN_VACANCY_CRITICAL = (3 * TARGET_THRESHOLD) / 10;
+    static constexpr s64 DEFAULT_EXPECTED_MEMORY = 1_GiB + 125_MiB;
+    static constexpr s64 DEFAULT_CRITICAL_MEMORY = 1_GiB + 625_MiB;
+    static constexpr size_t GC_EMERGENCY_COUNTS = 2;
 
     using Runtime = typename P::Runtime;
     using Image = typename P::Image;
@@ -372,6 +376,7 @@ private:
     u64 minimum_memory;
     u64 expected_memory;
     u64 critical_memory;
+    size_t critical_gc;
 
     SlotVector<Image> slot_images;
     SlotVector<ImageMapView> slot_map_views;

src/video_core/vulkan_common/vulkan_device.cpp

@@ -12,12 +12,14 @@
 #include <vector>
 
 #include "common/assert.h"
+#include "common/literals.h"
 #include "common/settings.h"
 #include "video_core/vulkan_common/nsight_aftermath_tracker.h"
 #include "video_core/vulkan_common/vulkan_device.h"
 #include "video_core/vulkan_common/vulkan_wrapper.h"
 
 namespace Vulkan {
+using namespace Common::Literals;
 namespace {
 namespace Alternatives {
 constexpr std::array STENCIL8_UINT{
@@ -596,6 +598,11 @@ Device::Device(VkInstance instance_, vk::PhysicalDevice physical_, VkSurfaceKHR
     }
     logical = vk::Device::Create(physical, queue_cis, extensions, first_next, dld);
 
+    is_integrated = (properties.deviceType & VK_PHYSICAL_DEVICE_TYPE_INTEGRATED_GPU) != 0;
+    is_virtual = (properties.deviceType & VK_PHYSICAL_DEVICE_TYPE_VIRTUAL_GPU) != 0;
+    is_non_gpu = (properties.deviceType & VK_PHYSICAL_DEVICE_TYPE_OTHER) != 0 ||
+                 (properties.deviceType & VK_PHYSICAL_DEVICE_TYPE_CPU) != 0;
+
     CollectPhysicalMemoryInfo();
     CollectTelemetryParameters();
     CollectToolingInfo();
@@ -985,6 +992,7 @@ std::vector<const char*> Device::LoadExtensions(bool requires_surface) {
         test(has_khr_swapchain_mutable_format, VK_KHR_SWAPCHAIN_MUTABLE_FORMAT_EXTENSION_NAME,
              false);
         test(has_ext_line_rasterization, VK_EXT_LINE_RASTERIZATION_EXTENSION_NAME, false);
+        test(ext_memory_budget, VK_EXT_MEMORY_BUDGET_EXTENSION_NAME, true);
         if (Settings::values.enable_nsight_aftermath) {
             test(nv_device_diagnostics_config, VK_NV_DEVICE_DIAGNOSTICS_CONFIG_EXTENSION_NAME,
                  true);
@@ -997,7 +1005,7 @@ std::vector<const char*> Device::LoadExtensions(bool requires_surface) {
     VkPhysicalDeviceFeatures2KHR features{};
     features.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2_KHR;
 
-    VkPhysicalDeviceProperties2KHR physical_properties;
+    VkPhysicalDeviceProperties2KHR physical_properties{};
     physical_properties.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2_KHR;
 
     if (has_khr_shader_float16_int8) {
@@ -1267,15 +1275,51 @@ void Device::CollectTelemetryParameters() {
     vendor_name = driver.driverName;
 }
 
+u64 Device::GetDeviceMemoryUsage() const {
+    VkPhysicalDeviceMemoryBudgetPropertiesEXT budget;
+    budget.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MEMORY_BUDGET_PROPERTIES_EXT;
+    budget.pNext = nullptr;
+    physical.GetMemoryProperties(&budget);
+    u64 result{};
+    for (const size_t heap : valid_heap_memory) {
+        result += budget.heapUsage[heap];
+    }
+    return result;
+}
+
 void Device::CollectPhysicalMemoryInfo() {
-    const auto mem_properties = physical.GetMemoryProperties();
+    VkPhysicalDeviceMemoryBudgetPropertiesEXT budget{};
+    budget.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MEMORY_BUDGET_PROPERTIES_EXT;
+    const auto mem_info = physical.GetMemoryProperties(ext_memory_budget ? &budget : nullptr);
+    const auto& mem_properties = mem_info.memoryProperties;
     const size_t num_properties = mem_properties.memoryHeapCount;
     device_access_memory = 0;
+    u64 device_initial_usage = 0;
+    u64 local_memory = 0;
     for (size_t element = 0; element < num_properties; ++element) {
-        if ((mem_properties.memoryHeaps[element].flags & VK_MEMORY_HEAP_DEVICE_LOCAL_BIT) != 0) {
-            device_access_memory += mem_properties.memoryHeaps[element].size;
+        const bool is_heap_local =
+            mem_properties.memoryHeaps[element].flags & VK_MEMORY_HEAP_DEVICE_LOCAL_BIT != 0;
+        if (!is_integrated && !is_heap_local) {
+            continue;
         }
+        valid_heap_memory.push_back(element);
+        if (is_heap_local) {
+            local_memory += mem_properties.memoryHeaps[element].size;
+        }
+        if (ext_memory_budget) {
+            device_initial_usage += budget.heapUsage[element];
+            device_access_memory += budget.heapBudget[element];
+            continue;
+        }
+        device_access_memory += mem_properties.memoryHeaps[element].size;
     }
+    if (!is_integrated) {
+        return;
+    }
+    const s64 available_memory = static_cast<s64>(device_access_memory - device_initial_usage);
+    device_access_memory = static_cast<u64>(std::max<s64>(
+        std::min<s64>(available_memory - 8_GiB, 4_GiB), static_cast<s64>(local_memory)));
+    device_initial_usage = 0;
 }
 
 void Device::CollectToolingInfo() {

src/video_core/vulkan_common/vulkan_device.h

@@ -341,6 +341,12 @@ public:
         return device_access_memory;
     }
 
+    bool CanReportMemoryUsage() const {
+        return ext_memory_budget;
+    }
+
+    u64 GetDeviceMemoryUsage() const;
+
     u32 GetSetsPerPool() const {
         return sets_per_pool;
     }
@@ -421,6 +427,9 @@ private:
     bool is_topology_list_restart_supported{};  ///< Support for primitive restart with list
                                                 ///< topologies.
     bool is_patch_list_restart_supported{};     ///< Support for primitive restart with list patch.
+    bool is_integrated{};                       ///< Is GPU an iGPU.
+    bool is_virtual{};                          ///< Is GPU a virtual GPU.
+    bool is_non_gpu{};                          ///< Is SoftwareRasterizer, FPGA, non-GPU device.
     bool nv_viewport_swizzle{};                 ///< Support for VK_NV_viewport_swizzle.
     bool nv_viewport_array2{};                  ///< Support for VK_NV_viewport_array2.
     bool nv_geometry_shader_passthrough{};      ///< Support for VK_NV_geometry_shader_passthrough.
@@ -445,6 +454,7 @@ private:
     bool ext_shader_atomic_int64{};         ///< Support for VK_KHR_shader_atomic_int64.
     bool ext_conservative_rasterization{};  ///< Support for VK_EXT_conservative_rasterization.
     bool ext_provoking_vertex{};            ///< Support for VK_EXT_provoking_vertex.
+    bool ext_memory_budget{};               ///< Support for VK_EXT_memory_budget.
     bool nv_device_diagnostics_config{};    ///< Support for VK_NV_device_diagnostics_config.
     bool has_broken_cube_compatibility{};   ///< Has broken cube compatiblity bit
     bool has_renderdoc{};                   ///< Has RenderDoc attached
@@ -456,6 +466,7 @@ private:
     // Telemetry parameters
     std::string vendor_name;                       ///< Device's driver name.
     std::vector<std::string> supported_extensions; ///< Reported Vulkan extensions.
+    std::vector<size_t> valid_heap_memory;         ///< Heaps used.
 
     /// Format properties dictionary.
     std::unordered_map<VkFormat, VkFormatProperties> format_properties;

src/video_core/vulkan_common/vulkan_memory_allocator.cpp

@@ -227,7 +227,7 @@ void MemoryCommit::Release() {
 }
 
 MemoryAllocator::MemoryAllocator(const Device& device_, bool export_allocations_)
-    : device{device_}, properties{device_.GetPhysical().GetMemoryProperties()},
+    : device{device_}, properties{device_.GetPhysical().GetMemoryProperties().memoryProperties},
       export_allocations{export_allocations_},
       buffer_image_granularity{
           device_.GetPhysical().GetProperties().limits.bufferImageGranularity} {}

src/video_core/vulkan_common/vulkan_wrapper.cpp

@@ -237,8 +237,8 @@ bool Load(VkInstance instance, InstanceDispatch& dld) noexcept {
     return X(vkCreateDevice) && X(vkDestroyDevice) && X(vkDestroyDevice) &&
            X(vkEnumerateDeviceExtensionProperties) && X(vkEnumeratePhysicalDevices) &&
            X(vkGetDeviceProcAddr) && X(vkGetPhysicalDeviceFormatProperties) &&
-           X(vkGetPhysicalDeviceMemoryProperties) && X(vkGetPhysicalDeviceProperties) &&
-           X(vkGetPhysicalDeviceQueueFamilyProperties);
+           X(vkGetPhysicalDeviceMemoryProperties) && X(vkGetPhysicalDeviceMemoryProperties2) &&
+           X(vkGetPhysicalDeviceProperties) && X(vkGetPhysicalDeviceQueueFamilyProperties);
 #undef X
 }
 
@@ -926,9 +926,12 @@ std::vector<VkPresentModeKHR> PhysicalDevice::GetSurfacePresentModesKHR(
     return modes;
 }
 
-VkPhysicalDeviceMemoryProperties PhysicalDevice::GetMemoryProperties() const noexcept {
-    VkPhysicalDeviceMemoryProperties properties;
-    dld->vkGetPhysicalDeviceMemoryProperties(physical_device, &properties);
+VkPhysicalDeviceMemoryProperties2 PhysicalDevice::GetMemoryProperties(
+    void* next_structures) const noexcept {
+    VkPhysicalDeviceMemoryProperties2 properties{};
+    properties.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MEMORY_PROPERTIES_2;
+    properties.pNext = next_structures;
+    dld->vkGetPhysicalDeviceMemoryProperties2(physical_device, &properties);
     return properties;
 }
 

src/video_core/vulkan_common/vulkan_wrapper.h

@@ -172,6 +172,7 @@ struct InstanceDispatch {
     PFN_vkGetPhysicalDeviceFeatures2KHR vkGetPhysicalDeviceFeatures2KHR{};
     PFN_vkGetPhysicalDeviceFormatProperties vkGetPhysicalDeviceFormatProperties{};
     PFN_vkGetPhysicalDeviceMemoryProperties vkGetPhysicalDeviceMemoryProperties{};
+    PFN_vkGetPhysicalDeviceMemoryProperties2 vkGetPhysicalDeviceMemoryProperties2{};
     PFN_vkGetPhysicalDeviceProperties vkGetPhysicalDeviceProperties{};
     PFN_vkGetPhysicalDeviceProperties2KHR vkGetPhysicalDeviceProperties2KHR{};
     PFN_vkGetPhysicalDeviceQueueFamilyProperties vkGetPhysicalDeviceQueueFamilyProperties{};
@@ -950,7 +951,8 @@ public:
 
     std::vector<VkPresentModeKHR> GetSurfacePresentModesKHR(VkSurfaceKHR) const;
 
-    VkPhysicalDeviceMemoryProperties GetMemoryProperties() const noexcept;
+    VkPhysicalDeviceMemoryProperties2 GetMemoryProperties(
+        void* next_structures = nullptr) const noexcept;
 
 private:
     VkPhysicalDevice physical_device = nullptr;