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// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <cstring>
#include <memory>
#include <vector>
#include "common/cityhash.h"
#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 {
std::size_t RenderPassParams::Hash() const noexcept {
const u64 hash = Common::CityHash64(reinterpret_cast<const char*>(this), sizeof *this);
return static_cast<std::size_t>(hash);
}
bool RenderPassParams::operator==(const RenderPassParams& rhs) const noexcept {
return std::memcmp(&rhs, this, sizeof *this) == 0;
}
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 {
using namespace VideoCore::Surface;
const std::size_t num_attachments = static_cast<std::size_t>(params.num_color_attachments);
std::vector<VkAttachmentDescription> descriptors;
descriptors.reserve(num_attachments);
std::vector<VkAttachmentReference> color_references;
color_references.reserve(num_attachments);
for (std::size_t rt = 0; rt < num_attachments; ++rt) {
const auto guest_format = static_cast<Tegra::RenderTargetFormat>(params.color_formats[rt]);
const PixelFormat pixel_format = PixelFormatFromRenderTargetFormat(guest_format);
const auto format = MaxwellToVK::SurfaceFormat(device, FormatType::Optimal, pixel_format);
ASSERT_MSG(format.attachable, "Trying to attach a non-attachable format with format={}",
static_cast<int>(pixel_format));
// TODO(Rodrigo): Add MAY_ALIAS_BIT when it's needed.
const VkImageLayout color_layout = ((params.texceptions >> rt) & 1) != 0
? VK_IMAGE_LAYOUT_GENERAL
: VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
descriptors.push_back({
.flags = VK_ATTACHMENT_DESCRIPTION_MAY_ALIAS_BIT,
.format = format.format,
.samples = VK_SAMPLE_COUNT_1_BIT,
.loadOp = VK_ATTACHMENT_LOAD_OP_LOAD,
.storeOp = VK_ATTACHMENT_STORE_OP_STORE,
.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE,
.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE,
.initialLayout = color_layout,
.finalLayout = color_layout,
});
color_references.push_back({
.attachment = static_cast<u32>(rt),
.layout = color_layout,
});
}
VkAttachmentReference zeta_attachment_ref;
const bool has_zeta = params.zeta_format != 0;
if (has_zeta) {
const auto guest_format = static_cast<Tegra::DepthFormat>(params.zeta_format);
const PixelFormat pixel_format = PixelFormatFromDepthFormat(guest_format);
const auto format = MaxwellToVK::SurfaceFormat(device, FormatType::Optimal, pixel_format);
ASSERT_MSG(format.attachable, "Trying to attach a non-attachable format with format={}",
static_cast<int>(pixel_format));
const VkImageLayout zeta_layout = params.zeta_texception != 0
? VK_IMAGE_LAYOUT_GENERAL
: VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
descriptors.push_back({
.flags = 0,
.format = format.format,
.samples = VK_SAMPLE_COUNT_1_BIT,
.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 = zeta_layout,
.finalLayout = zeta_layout,
});
zeta_attachment_ref = {
.attachment = static_cast<u32>(num_attachments),
.layout = zeta_layout,
};
}
const VkSubpassDescription subpass_description{
.flags = 0,
.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS,
.inputAttachmentCount = 0,
.pInputAttachments = nullptr,
.colorAttachmentCount = static_cast<u32>(color_references.size()),
.pColorAttachments = color_references.data(),
.pResolveAttachments = nullptr,
.pDepthStencilAttachment = has_zeta ? &zeta_attachment_ref : nullptr,
.preserveAttachmentCount = 0,
.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 (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;
}
const VkSubpassDependency subpass_dependency{
.srcSubpass = VK_SUBPASS_EXTERNAL,
.dstSubpass = 0,
.srcStageMask = stage,
.dstStageMask = stage,
.srcAccessMask = 0,
.dstAccessMask = access,
.dependencyFlags = 0,
};
return device.GetLogical().CreateRenderPass({
.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO,
.pNext = nullptr,
.flags = 0,
.attachmentCount = static_cast<u32>(descriptors.size()),
.pAttachments = descriptors.data(),
.subpassCount = 1,
.pSubpasses = &subpass_description,
.dependencyCount = 1,
.pDependencies = &subpass_dependency,
});
}
} // namespace Vulkan
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