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// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <memory>
#include <vector>
#include "video_core/engines/maxwell_3d.h"
#include "video_core/renderer_vulkan/maxwell_to_vk.h"
#include "video_core/renderer_vulkan/vk_device.h"
#include "video_core/renderer_vulkan/vk_renderpass_cache.h"
#include "video_core/renderer_vulkan/wrapper.h"
namespace Vulkan {
VKRenderPassCache::VKRenderPassCache(const VKDevice& device) : device{device} {}
VKRenderPassCache::~VKRenderPassCache() = default;
VkRenderPass VKRenderPassCache::GetRenderPass(const RenderPassParams& params) {
const auto [pair, is_cache_miss] = cache.try_emplace(params);
auto& entry = pair->second;
if (is_cache_miss) {
entry = CreateRenderPass(params);
}
return *entry;
}
vk::RenderPass VKRenderPassCache::CreateRenderPass(const RenderPassParams& params) const {
std::vector<VkAttachmentDescription> descriptors;
std::vector<VkAttachmentReference> color_references;
for (std::size_t rt = 0; rt < params.color_attachments.size(); ++rt) {
const auto attachment = params.color_attachments[rt];
const auto format =
MaxwellToVK::SurfaceFormat(device, FormatType::Optimal, attachment.pixel_format);
ASSERT_MSG(format.attachable, "Trying to attach a non-attachable format with format={}",
static_cast<u32>(attachment.pixel_format));
// TODO(Rodrigo): Add eMayAlias when it's needed.
const auto color_layout = attachment.is_texception
? VK_IMAGE_LAYOUT_GENERAL
: VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
VkAttachmentDescription& descriptor = descriptors.emplace_back();
descriptor.flags = VK_ATTACHMENT_DESCRIPTION_MAY_ALIAS_BIT;
descriptor.format = format.format;
descriptor.samples = VK_SAMPLE_COUNT_1_BIT;
descriptor.loadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
descriptor.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
descriptor.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
descriptor.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
descriptor.initialLayout = color_layout;
descriptor.finalLayout = color_layout;
VkAttachmentReference& reference = color_references.emplace_back();
reference.attachment = static_cast<u32>(rt);
reference.layout = color_layout;
}
VkAttachmentReference zeta_attachment_ref;
if (params.has_zeta) {
const auto format =
MaxwellToVK::SurfaceFormat(device, FormatType::Optimal, params.zeta_pixel_format);
ASSERT_MSG(format.attachable, "Trying to attach a non-attachable format with format={}",
static_cast<u32>(params.zeta_pixel_format));
const auto zeta_layout = params.zeta_texception
? VK_IMAGE_LAYOUT_GENERAL
: VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
VkAttachmentDescription& descriptor = descriptors.emplace_back();
descriptor.flags = 0;
descriptor.format = format.format;
descriptor.samples = VK_SAMPLE_COUNT_1_BIT;
descriptor.loadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
descriptor.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
descriptor.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
descriptor.stencilStoreOp = VK_ATTACHMENT_STORE_OP_STORE;
descriptor.initialLayout = zeta_layout;
descriptor.finalLayout = zeta_layout;
zeta_attachment_ref.attachment = static_cast<u32>(params.color_attachments.size());
zeta_attachment_ref.layout = zeta_layout;
}
VkSubpassDescription subpass_description;
subpass_description.flags = 0;
subpass_description.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
subpass_description.inputAttachmentCount = 0;
subpass_description.pInputAttachments = nullptr;
subpass_description.colorAttachmentCount = static_cast<u32>(color_references.size());
subpass_description.pColorAttachments = color_references.data();
subpass_description.pResolveAttachments = nullptr;
subpass_description.pDepthStencilAttachment = params.has_zeta ? &zeta_attachment_ref : nullptr;
subpass_description.preserveAttachmentCount = 0;
subpass_description.pPreserveAttachments = nullptr;
VkAccessFlags access = 0;
VkPipelineStageFlags stage = 0;
if (!color_references.empty()) {
access |= VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
stage |= VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
}
if (params.has_zeta) {
access |= VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT |
VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
stage |= VK_PIPELINE_STAGE_LATE_FRAGMENT_TESTS_BIT;
}
VkSubpassDependency subpass_dependency;
subpass_dependency.srcSubpass = VK_SUBPASS_EXTERNAL;
subpass_dependency.dstSubpass = 0;
subpass_dependency.srcStageMask = stage;
subpass_dependency.dstStageMask = stage;
subpass_dependency.srcAccessMask = 0;
subpass_dependency.dstAccessMask = access;
subpass_dependency.dependencyFlags = 0;
VkRenderPassCreateInfo ci;
ci.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
ci.pNext = nullptr;
ci.flags = 0;
ci.attachmentCount = static_cast<u32>(descriptors.size());
ci.pAttachments = descriptors.data();
ci.subpassCount = 1;
ci.pSubpasses = &subpass_description;
ci.dependencyCount = 1;
ci.pDependencies = &subpass_dependency;
return device.GetLogical().CreateRenderPass(ci);
}
} // namespace Vulkan
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