1 files changed, 96 insertions, 0 deletions
diff --git a/src/video_core/renderer_vulkan/vk_render_pass_cache.cpp b/src/video_core/renderer_vulkan/vk_render_pass_cache.cpp
new file mode 100644
index 000000000..451ffe019
--- /dev/null
+++ b/src/video_core/renderer_vulkan/vk_render_pass_cache.cpp
@@ -0,0 +1,96 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <unordered_map>
+
+#include <boost/container/static_vector.hpp>
+
+#include "video_core/renderer_vulkan/maxwell_to_vk.h"
+#include "video_core/renderer_vulkan/vk_render_pass_cache.h"
+#include "video_core/surface.h"
+#include "video_core/vulkan_common/vulkan_device.h"
+#include "video_core/vulkan_common/vulkan_wrapper.h"
+
+namespace Vulkan {
+namespace {
+using VideoCore::Surface::PixelFormat;
+
+VkAttachmentDescription AttachmentDescription(const Device& device, PixelFormat format,
+                                              VkSampleCountFlagBits samples) {
+    using MaxwellToVK::SurfaceFormat;
+    return {
+        .flags = VK_ATTACHMENT_DESCRIPTION_MAY_ALIAS_BIT,
+        .format = SurfaceFormat(device, FormatType::Optimal, true, format).format,
+        .samples = samples,
+        .loadOp = VK_ATTACHMENT_LOAD_OP_LOAD,
+        .storeOp = VK_ATTACHMENT_STORE_OP_STORE,
+        .stencilLoadOp = VK_ATTACHMENT_LOAD_OP_LOAD,
+        .stencilStoreOp = VK_ATTACHMENT_STORE_OP_STORE,
+        .initialLayout = VK_IMAGE_LAYOUT_GENERAL,
+        .finalLayout = VK_IMAGE_LAYOUT_GENERAL,
+    };
+}
+} // Anonymous namespace
+
+RenderPassCache::RenderPassCache(const Device& device_) : device{&device_} {}
+
+VkRenderPass RenderPassCache::Get(const RenderPassKey& key) {
+    std::lock_guard lock{mutex};
+    const auto [pair, is_new] = cache.try_emplace(key);
+    if (!is_new) {
+        return *pair->second;
+    }
+    boost::container::static_vector<VkAttachmentDescription, 9> descriptions;
+    std::array<VkAttachmentReference, 8> references{};
+    u32 num_attachments{};
+    u32 num_colors{};
+    for (size_t index = 0; index < key.color_formats.size(); ++index) {
+        const PixelFormat format{key.color_formats[index]};
+        const bool is_valid{format != PixelFormat::Invalid};
+        references[index] = VkAttachmentReference{
+            .attachment = is_valid ? num_colors : VK_ATTACHMENT_UNUSED,
+            .layout = VK_IMAGE_LAYOUT_GENERAL,
+        };
+        if (is_valid) {
+            descriptions.push_back(AttachmentDescription(*device, format, key.samples));
+            num_attachments = static_cast<u32>(index + 1);
+            ++num_colors;
+        }
+    }
+    const bool has_depth{key.depth_format != PixelFormat::Invalid};
+    VkAttachmentReference depth_reference{};
+    if (key.depth_format != PixelFormat::Invalid) {
+        depth_reference = VkAttachmentReference{
+            .attachment = num_colors,
+            .layout = VK_IMAGE_LAYOUT_GENERAL,
+        };
+        descriptions.push_back(AttachmentDescription(*device, key.depth_format, key.samples));
+    }
+    const VkSubpassDescription subpass{
+        .flags = 0,
+        .pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS,
+        .inputAttachmentCount = 0,
+        .pInputAttachments = nullptr,
+        .colorAttachmentCount = num_attachments,
+        .pColorAttachments = references.data(),
+        .pResolveAttachments = nullptr,
+        .pDepthStencilAttachment = has_depth ? &depth_reference : nullptr,
+        .preserveAttachmentCount = 0,
+        .pPreserveAttachments = nullptr,
+    };
+    pair->second = device->GetLogical().CreateRenderPass({
+        .sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO,
+        .pNext = nullptr,
+        .flags = 0,
+        .attachmentCount = static_cast<u32>(descriptions.size()),
+        .pAttachments = descriptions.empty() ? nullptr : descriptions.data(),
+        .subpassCount = 1,
+        .pSubpasses = &subpass,
+        .dependencyCount = 0,
+        .pDependencies = nullptr,
+    });
+    return *pair->second;
+}
+
+} // namespace Vulkan