1 files changed, 97 insertions, 0 deletions
diff --git a/src/video_core/renderer_vulkan/vk_renderpass_cache.h b/src/video_core/renderer_vulkan/vk_renderpass_cache.h
new file mode 100644
index 000000000..b49b2db48
--- /dev/null
+++ b/src/video_core/renderer_vulkan/vk_renderpass_cache.h
@@ -0,0 +1,97 @@
+// Copyright 2019 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include <tuple>
+#include <unordered_map>
+
+#include <boost/container/static_vector.hpp>
+#include <boost/functional/hash.hpp>
+
+#include "video_core/engines/maxwell_3d.h"
+#include "video_core/renderer_vulkan/declarations.h"
+#include "video_core/surface.h"
+
+namespace Vulkan {
+
+class VKDevice;
+
+// TODO(Rodrigo): Optimize this structure for faster hashing
+
+struct RenderPassParams {
+    struct ColorAttachment {
+        u32 index = 0;
+        VideoCore::Surface::PixelFormat pixel_format = VideoCore::Surface::PixelFormat::Invalid;
+        bool is_texception = false;
+
+        std::size_t Hash() const noexcept {
+            return static_cast<std::size_t>(pixel_format) |
+                   static_cast<std::size_t>(is_texception) << 6 |
+                   static_cast<std::size_t>(index) << 7;
+        }
+
+        bool operator==(const ColorAttachment& rhs) const noexcept {
+            return std::tie(index, pixel_format, is_texception) ==
+                   std::tie(rhs.index, rhs.pixel_format, rhs.is_texception);
+        }
+    };
+
+    boost::container::static_vector<ColorAttachment,
+                                    Tegra::Engines::Maxwell3D::Regs::NumRenderTargets>
+        color_attachments{};
+    // TODO(Rodrigo): Unify has_zeta into zeta_pixel_format and zeta_component_type.
+    VideoCore::Surface::PixelFormat zeta_pixel_format = VideoCore::Surface::PixelFormat::Invalid;
+    bool has_zeta = false;
+    bool zeta_texception = false;
+
+    std::size_t Hash() const noexcept {
+        std::size_t hash = 0;
+        for (const auto& rt : color_attachments) {
+            boost::hash_combine(hash, rt.Hash());
+        }
+        boost::hash_combine(hash, zeta_pixel_format);
+        boost::hash_combine(hash, has_zeta);
+        boost::hash_combine(hash, zeta_texception);
+        return hash;
+    }
+
+    bool operator==(const RenderPassParams& rhs) const {
+        return std::tie(color_attachments, zeta_pixel_format, has_zeta, zeta_texception) ==
+               std::tie(rhs.color_attachments, rhs.zeta_pixel_format, rhs.has_zeta,
+                        rhs.zeta_texception);
+    }
+};
+
+} // namespace Vulkan
+
+namespace std {
+
+template <>
+struct hash<Vulkan::RenderPassParams> {
+    std::size_t operator()(const Vulkan::RenderPassParams& k) const noexcept {
+        return k.Hash();
+    }
+};
+
+} // namespace std
+
+namespace Vulkan {
+
+class VKRenderPassCache final {
+public:
+    explicit VKRenderPassCache(const VKDevice& device);
+    ~VKRenderPassCache();
+
+    vk::RenderPass GetRenderPass(const RenderPassParams& params);
+
+private:
+    UniqueRenderPass CreateRenderPass(const RenderPassParams& params) const;
+
+    const VKDevice& device;
+    std::unordered_map<RenderPassParams, UniqueRenderPass> cache;
+};
+
+} // namespace Vulkan