From 260743f371236f7c57b01334b1c3474b15a47c39 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Fri, 19 Mar 2021 19:28:31 -0300
Subject: shader: Add partial rasterizer integration

---
 .../renderer_vulkan/vk_render_pass_cache.cpp       | 100 +++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 src/video_core/renderer_vulkan/vk_render_pass_cache.cpp

(limited to 'src/video_core/renderer_vulkan/vk_render_pass_cache.cpp')

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..7e5ae43ea
--- /dev/null
+++ b/src/video_core/renderer_vulkan/vk_render_pass_cache.cpp
@@ -0,0 +1,100 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#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;
+
+constexpr std::array ATTACHMENT_REFERENCES{
+    VkAttachmentReference{0, VK_IMAGE_LAYOUT_GENERAL},
+    VkAttachmentReference{1, VK_IMAGE_LAYOUT_GENERAL},
+    VkAttachmentReference{2, VK_IMAGE_LAYOUT_GENERAL},
+    VkAttachmentReference{3, VK_IMAGE_LAYOUT_GENERAL},
+    VkAttachmentReference{4, VK_IMAGE_LAYOUT_GENERAL},
+    VkAttachmentReference{5, VK_IMAGE_LAYOUT_GENERAL},
+    VkAttachmentReference{6, VK_IMAGE_LAYOUT_GENERAL},
+    VkAttachmentReference{7, VK_IMAGE_LAYOUT_GENERAL},
+    VkAttachmentReference{8, VK_IMAGE_LAYOUT_GENERAL},
+};
+
+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) {
+    const auto [pair, is_new] = cache.try_emplace(key);
+    if (!is_new) {
+        return *pair->second;
+    }
+    boost::container::static_vector<VkAttachmentDescription, 9> descriptions;
+    u32 num_images{0};
+
+    for (size_t index = 0; index < key.color_formats.size(); ++index) {
+        const PixelFormat format{key.color_formats[index]};
+        if (format == PixelFormat::Invalid) {
+            continue;
+        }
+        descriptions.push_back(AttachmentDescription(*device, format, key.samples));
+        ++num_images;
+    }
+    const size_t num_colors{descriptions.size()};
+    const VkAttachmentReference* depth_attachment{};
+    if (key.depth_format != PixelFormat::Invalid) {
+        depth_attachment = &ATTACHMENT_REFERENCES[num_colors];
+        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 = static_cast<u32>(num_colors),
+        .pColorAttachments = num_colors != 0 ? ATTACHMENT_REFERENCES.data() : nullptr,
+        .pResolveAttachments = nullptr,
+        .pDepthStencilAttachment = depth_attachment,
+        .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.data(),
+        .subpassCount = 1,
+        .pSubpasses = &subpass,
+        .dependencyCount = 0,
+        .pDependencies = nullptr,
+    });
+    return *pair->second;
+}
+
+} // namespace Vulkan
-- 
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