renderer_vulkan: Add setting to log pipeline statistics

Use VK_KHR_pipeline_executable_properties when enabled and available to
log statistics about the pipeline cache in a game.

For example, this is on Turing GPUs when generating a pipeline cache
from Super Smash Bros. Ultimate:

Average pipeline statistics
==========================================
Code size:       6433.167
Register count:    32.939

More advanced results could be presented, at the moment it's just an
average of all 3D and compute pipelines.

1 files changed, 40 insertions, 0 deletions

diff --git a/src/video_core/renderer_vulkan/pipeline_statistics.h b/src/video_core/renderer_vulkan/pipeline_statistics.h
new file mode 100644
index 000000000..b61840107
--- /dev/null
+++ b/src/video_core/renderer_vulkan/pipeline_statistics.h
@@ -0,0 +1,40 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <mutex>
+#include <vector>
+
+#include "common/common_types.h"
+#include "video_core/vulkan_common/vulkan_wrapper.h"
+
+namespace Vulkan {
+
+class Device;
+
+class PipelineStatistics {
+public:
+    explicit PipelineStatistics(const Device& device_);
+
+    void Collect(VkPipeline pipeline);
+
+    void Report() const;
+
+private:
+    struct Stats {
+        u64 code_size{};
+        u64 register_count{};
+        u64 sgpr_count{};
+        u64 vgpr_count{};
+        u64 branches_count{};
+        u64 basic_block_count{};
+    };
+
+    const Device& device;
+    mutable std::mutex mutex;
+    std::vector<Stats> collected_stats;
+};
+
+} // namespace Vulkan