refactor(graphics): split renderer and recompiler into focused modules

src/graphics/host_gpu/renderer/cache/samplerCache.h

@@ -0,0 +1,51 @@
+#ifndef EMULATOR_SRC_GRAPHICS_HOST_GPU_RENDERER_SAMPLERCACHE_H_
+#define EMULATOR_SRC_GRAPHICS_HOST_GPU_RENDERER_SAMPLERCACHE_H_
+
+#include "common/abi.h"
+#include "common/assert.h"
+#include "common/common.h"
+#include "common/threads.h"
+#include "graphics/host_gpu/vulkanCommon.h"
+#include "graphics/shader/shaderBindings.h"
+
+#include <array>
+#include <cstddef>
+#include <unordered_map>
+
+namespace Libs::Graphics {
+
+struct GraphicContext;
+
+class SamplerCache {
+public:
+	explicit SamplerCache(GraphicContext& graphics): m_graphics(graphics) {
+		EXIT_NOT_IMPLEMENTED(!Common::Thread::IsMainThread());
+	}
+	~SamplerCache();
+	KYTY_CLASS_NO_COPY(SamplerCache);
+
+	vk::Sampler GetSampler(const ShaderSamplerResource& r);
+
+private:
+	using SamplerKey = std::array<uint32_t, 4>;
+
+	struct SamplerKeyHash {
+		std::size_t operator()(const SamplerKey& key) const {
+			std::size_t hash = 0;
+			for (auto value: key) {
+				hash ^= static_cast<std::size_t>(value) +
+				        static_cast<std::size_t>(0x9e3779b97f4a7c15ull) + (hash << 6u) +
+				        (hash >> 2u);
+			}
+			return hash;
+		}
+	};
+
+	GraphicContext&                                             m_graphics;
+	Common::Mutex                                               m_mutex;
+	std::unordered_map<SamplerKey, vk::Sampler, SamplerKeyHash> m_samplers;
+};
+
+} // namespace Libs::Graphics
+
+#endif // EMULATOR_SRC_GRAPHICS_HOST_GPU_RENDERER_SAMPLERCACHE_H_