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// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: Copyright 2025 lsfg-vk
// SPDX-License-Identifier: GPL-3.0-or-later
#include <vector>
#include "video_core/frame_gen/lossless_dll.h"
#include "video_core/renderer_vulkan/present/lsfg_generate.h"
#include "video_core/renderer_vulkan/present/lsfg_shaders.h"
#include "video_core/renderer_vulkan/present/util.h"
#include "video_core/vulkan_common/vulkan_device.h"
namespace Vulkan {
namespace {
constexpr u32 DISPATCH_TILE_SHIFT = 4;
[[nodiscard]] u32 GroupCount(u32 size) {
return (size + (1u << DISPATCH_TILE_SHIFT) - 1) >> DISPATCH_TILE_SHIFT;
}
VkImageMemoryBarrier MakeTargetBarrier(VkImage image, VkAccessFlags src_access,
VkAccessFlags dst_access, VkImageLayout old_layout) {
return VkImageMemoryBarrier{
.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
.pNext = nullptr,
.srcAccessMask = src_access,
.dstAccessMask = dst_access,
.oldLayout = old_layout,
.newLayout = VK_IMAGE_LAYOUT_GENERAL,
.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
.image = image,
.subresourceRange{
.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
.baseMipLevel = 0,
.levelCount = 1,
.baseArrayLayer = 0,
.layerCount = 1,
},
};
}
} // Anonymous namespace
LsfgGenerate::LsfgGenerate(const Device& device, const LsfgShaders& shaders,
LsfgResources& resources, vk::DescriptorPool& descriptor_pool,
LsfgImagePair& frames_, LsfgImage& motion_, LsfgImage& detail1_,
LsfgImage& detail2_)
: frames{&frames_}, motion{&motion_}, detail1{&detail1_}, detail2{&detail2_} {
using namespace VideoCore::FrameGen::PerformanceShader;
pass = LsfgPass(device, shaders, GENERATE,
{{1, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER},
{2, VK_DESCRIPTOR_TYPE_SAMPLER},
{5, VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE},
{1, VK_DESCRIPTOR_TYPE_STORAGE_IMAGE}});
sampler = resources.GetSampler();
edge_sampler =
resources.GetSampler(VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE, VK_COMPARE_OP_ALWAYS, false);
const std::vector<VkDescriptorSetLayout> layouts(
LSFG_GENERATION_SLOTS * LSFG_MAX_TARGETS * 2, pass.SetLayout());
owned_sets = CreateWrappedDescriptorSets(descriptor_pool, layouts);
size_t next = 0;
for (size_t slot = 0; slot < LSFG_GENERATION_SLOTS; ++slot) {
Generation& target = generations[slot];
target.buffer = resources.GetBuffer(LsfgSlotTimestamp(slot));
for (auto& entry : target.targets) {
for (auto& set : entry.descriptor_sets) {
set = owned_sets[next++];
}
}
}
}
void LsfgGenerate::SetTarget(const Device& device, size_t slot, u32 target, VkImageView view) {
Target& entry = generations[slot].targets[target];
if (entry.view == view) {
return;
}
entry.view = view;
for (size_t i = 0; i < entry.descriptor_sets.size(); ++i) {
LsfgDescriptorWriter(entry.descriptor_sets[i])
.AddUniformBuffer(generations[slot].buffer, LsfgResources::BufferSize())
.AddSampler(sampler)
.AddSampler(edge_sampler)
.AddSampledImage((*frames)[1 - i])
.AddSampledImage((*frames)[i])
.AddSampledImage(*motion)
.AddSampledImage(*detail1)
.AddSampledImage(*detail2)
.AddStorageView(view)
.Build(device);
}
}
void LsfgGenerate::Dispatch(vk::CommandBuffer cmdbuf, u64 frame_count, size_t slot, u32 target,
VkImage image, VkExtent2D extent) {
const Target& entry = generations[slot].targets[target];
LsfgBarriers(cmdbuf)
.WriteToReadAll(*frames)
.WriteToRead(*motion)
.WriteToRead(*detail1)
.WriteToRead(*detail2)
.DiscardToWrite(image)
.Build();
pass.Bind(cmdbuf, entry.descriptor_sets[frame_count % entry.descriptor_sets.size()]);
cmdbuf.Dispatch(GroupCount(extent.width), GroupCount(extent.height), 1);
const std::array after{MakeTargetBarrier(
image, VK_ACCESS_SHADER_WRITE_BIT,
VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT | VK_ACCESS_TRANSFER_READ_BIT,
VK_IMAGE_LAYOUT_GENERAL)};
cmdbuf.PipelineBarrier(VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT,
VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT |
VK_PIPELINE_STAGE_TRANSFER_BIT,
0, {}, {}, after);
}
} // namespace Vulkan
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