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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_delta.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 = 3;
[[nodiscard]] u32 GroupCount(u32 size) {
return (size + (1u << DISPATCH_TILE_SHIFT) - 1) >> DISPATCH_TILE_SHIFT;
}
} // Anonymous namespace
LsfgDelta::LsfgDelta(const Device& device, MemoryAllocator& memory_allocator,
const LsfgShaders& shaders, LsfgResources& resources,
vk::DescriptorPool& descriptor_pool, LsfgImageHistory& inputs_,
LsfgImage& flow_input_, LsfgImage* previous_gamma_, LsfgImage* previous1_,
LsfgImage* previous2_)
: inputs{&inputs_}, flow_input{&flow_input_}, previous_gamma{previous_gamma_},
previous1{previous1_}, previous2{previous2_} {
using namespace VideoCore::FrameGen::PerformanceShader;
passes[0] = LsfgPass(device, shaders, DELTA[0],
{{1, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER},
{2, VK_DESCRIPTOR_TYPE_SAMPLER},
{5, VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE},
{3, VK_DESCRIPTOR_TYPE_STORAGE_IMAGE}});
passes[1] = LsfgPass(device, shaders, DELTA[1],
{{1, VK_DESCRIPTOR_TYPE_SAMPLER},
{3, VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE},
{2, VK_DESCRIPTOR_TYPE_STORAGE_IMAGE}});
passes[2] = LsfgPass(device, shaders, DELTA[2],
{{1, VK_DESCRIPTOR_TYPE_SAMPLER},
{2, VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE},
{2, VK_DESCRIPTOR_TYPE_STORAGE_IMAGE}});
passes[3] = LsfgPass(device, shaders, DELTA[3],
{{1, VK_DESCRIPTOR_TYPE_SAMPLER},
{2, VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE},
{2, VK_DESCRIPTOR_TYPE_STORAGE_IMAGE}});
passes[4] = LsfgPass(device, shaders, DELTA[4],
{{1, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER},
{2, VK_DESCRIPTOR_TYPE_SAMPLER},
{4, VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE},
{1, VK_DESCRIPTOR_TYPE_STORAGE_IMAGE}});
passes[5] = LsfgPass(device, shaders, DELTA[5],
{{1, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER},
{2, VK_DESCRIPTOR_TYPE_SAMPLER},
{6, VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE},
{1, VK_DESCRIPTOR_TYPE_STORAGE_IMAGE}});
for (size_t i = 6; i < LSFG_DELTA_STAGES - 1; ++i) {
passes[i] = LsfgPass(device, shaders, DELTA[i],
{{1, VK_DESCRIPTOR_TYPE_SAMPLER},
{1, VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE},
{1, VK_DESCRIPTOR_TYPE_STORAGE_IMAGE}});
}
passes[9] = LsfgPass(device, shaders, DELTA[9],
{{1, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER},
{2, VK_DESCRIPTOR_TYPE_SAMPLER},
{2, VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE},
{1, VK_DESCRIPTOR_TYPE_STORAGE_IMAGE}});
const VkExtent2D extent = (*inputs)[0][0].Extent();
for (auto& image : temp1) {
image = LsfgImage(device, memory_allocator, extent);
}
for (auto& image : temp2) {
image = LsfgImage(device, memory_allocator, extent);
}
out_image1 = LsfgImage(device, memory_allocator, extent, LSFG_MOTION_FORMAT);
out_image2 = LsfgImage(device, memory_allocator, extent, LSFG_MOTION_FORMAT);
std::vector<VkDescriptorSetLayout> layouts;
for (size_t slot = 0; slot < LSFG_GENERATION_SLOTS; ++slot) {
for (size_t i = 0; i < LSFG_HISTORY_SLOTS; ++i) {
layouts.push_back(passes[0].SetLayout());
}
for (size_t i = 1; i <= 4; ++i) {
layouts.push_back(passes[i].SetLayout());
}
for (size_t i = 0; i < LSFG_HISTORY_SLOTS; ++i) {
layouts.push_back(passes[5].SetLayout());
}
for (size_t i = 6; i < LSFG_DELTA_STAGES; ++i) {
layouts.push_back(passes[i].SetLayout());
}
}
owned_sets = CreateWrappedDescriptorSets(descriptor_pool, layouts);
const VkSampler sampler = resources.GetSampler();
const VkSampler border_sampler = resources.GetSampler(
VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER, VK_COMPARE_OP_NEVER, true);
const VkSampler edge_sampler =
resources.GetSampler(VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE, VK_COMPARE_OP_ALWAYS, false);
size_t next = 0;
for (size_t slot = 0; slot < LSFG_GENERATION_SLOTS; ++slot) {
Generation& pass = generations[slot];
const VkBuffer buffer =
resources.GetBuffer(LsfgSlotTimestamp(slot), false, previous_gamma == nullptr);
for (size_t i = 0; i < LSFG_HISTORY_SLOTS; ++i) {
pass.first_descriptor_sets[i] = owned_sets[next++];
}
for (size_t i = 0; i < 4; ++i) {
pass.descriptor_sets[i] = owned_sets[next++];
}
for (size_t i = 0; i < LSFG_HISTORY_SLOTS; ++i) {
pass.sixth_descriptor_sets[i] = owned_sets[next++];
}
for (size_t i = 4; i < LSFG_DELTA_STAGES - 2; ++i) {
pass.descriptor_sets[i] = owned_sets[next++];
}
for (size_t i = 0; i < LSFG_HISTORY_SLOTS; ++i) {
LsfgDescriptorWriter(pass.first_descriptor_sets[i])
.AddUniformBuffer(buffer, LsfgResources::BufferSize())
.AddSampler(border_sampler)
.AddSampler(edge_sampler)
.AddSampledImages((*inputs)[(i + 2) % LSFG_HISTORY_SLOTS])
.AddSampledImages((*inputs)[i % LSFG_HISTORY_SLOTS])
.AddSampledImage(previous_gamma)
.AddStorageImages(temp1)
.Build(device);
LsfgDescriptorWriter(pass.sixth_descriptor_sets[i])
.AddUniformBuffer(buffer, LsfgResources::BufferSize())
.AddSampler(border_sampler)
.AddSampler(edge_sampler)
.AddSampledImages((*inputs)[(i + 2) % LSFG_HISTORY_SLOTS])
.AddSampledImages((*inputs)[i % LSFG_HISTORY_SLOTS])
.AddSampledImage(previous_gamma)
.AddSampledImage(previous1)
.AddStorageImage(temp2[0])
.Build(device);
}
LsfgDescriptorWriter(pass.descriptor_sets[0])
.AddSampler(sampler)
.AddSampledImages(temp1)
.AddStorageImages(temp2)
.Build(device);
LsfgDescriptorWriter(pass.descriptor_sets[1])
.AddSampler(sampler)
.AddSampledImages(temp2)
.AddStorageImage(temp1[0])
.AddStorageImage(temp1[1])
.Build(device);
LsfgDescriptorWriter(pass.descriptor_sets[2])
.AddSampler(sampler)
.AddSampledImage(temp1[0])
.AddSampledImage(temp1[1])
.AddStorageImages(temp2)
.Build(device);
LsfgDescriptorWriter(pass.descriptor_sets[3])
.AddUniformBuffer(buffer, LsfgResources::BufferSize())
.AddSampler(sampler)
.AddSampler(edge_sampler)
.AddSampledImages(temp2)
.AddSampledImage(previous_gamma)
.AddSampledImage(*flow_input)
.AddStorageImage(out_image1)
.Build(device);
LsfgDescriptorWriter(pass.descriptor_sets[4])
.AddSampler(sampler)
.AddSampledImage(temp2[0])
.AddStorageImage(temp1[0])
.Build(device);
LsfgDescriptorWriter(pass.descriptor_sets[5])
.AddSampler(sampler)
.AddSampledImage(temp1[0])
.AddStorageImage(temp2[0])
.Build(device);
LsfgDescriptorWriter(pass.descriptor_sets[6])
.AddSampler(sampler)
.AddSampledImage(temp2[0])
.AddStorageImage(temp1[0])
.Build(device);
LsfgDescriptorWriter(pass.descriptor_sets[7])
.AddUniformBuffer(buffer, LsfgResources::BufferSize())
.AddSampler(sampler)
.AddSampler(edge_sampler)
.AddSampledImage(temp1[0])
.AddSampledImage(previous2)
.AddStorageImage(out_image2)
.Build(device);
}
}
void LsfgDelta::Dispatch(vk::CommandBuffer cmdbuf, u64 frame_count, size_t slot) {
const Generation& pass = generations[slot];
const VkExtent2D extent = temp1[0].Extent();
const u32 groups_x = GroupCount(extent.width);
const u32 groups_y = GroupCount(extent.height);
const size_t history = frame_count % LSFG_HISTORY_SLOTS;
const size_t previous_history = (frame_count + 2) % LSFG_HISTORY_SLOTS;
LsfgBarriers(cmdbuf)
.WriteToReadAll((*inputs)[previous_history])
.WriteToReadAll((*inputs)[history])
.WriteToRead(previous_gamma)
.ReadToWriteAll(temp1)
.Build();
passes[0].Bind(cmdbuf, pass.first_descriptor_sets[history]);
cmdbuf.Dispatch(groups_x, groups_y, 1);
LsfgBarriers(cmdbuf).WriteToReadAll(temp1).ReadToWriteAll(temp2).Build();
passes[1].Bind(cmdbuf, pass.descriptor_sets[0]);
cmdbuf.Dispatch(groups_x, groups_y, 1);
LsfgBarriers(cmdbuf).WriteToReadAll(temp2).ReadToWriteAll(temp1).Build();
passes[2].Bind(cmdbuf, pass.descriptor_sets[1]);
cmdbuf.Dispatch(groups_x, groups_y, 1);
LsfgBarriers(cmdbuf).WriteToReadAll(temp1).ReadToWriteAll(temp2).Build();
passes[3].Bind(cmdbuf, pass.descriptor_sets[2]);
cmdbuf.Dispatch(groups_x, groups_y, 1);
LsfgBarriers(cmdbuf)
.WriteToReadAll(temp2)
.WriteToRead(previous_gamma)
.WriteToRead(*flow_input)
.ReadToWrite(out_image1)
.Build();
passes[4].Bind(cmdbuf, pass.descriptor_sets[3]);
cmdbuf.Dispatch(groups_x, groups_y, 1);
LsfgBarriers(cmdbuf)
.WriteToReadAll((*inputs)[previous_history])
.WriteToReadAll((*inputs)[history])
.WriteToRead(previous_gamma)
.WriteToRead(previous1)
.ReadToWriteAll(temp2)
.Build();
passes[5].Bind(cmdbuf, pass.sixth_descriptor_sets[history]);
cmdbuf.Dispatch(groups_x, groups_y, 1);
LsfgBarriers(cmdbuf)
.WriteToReadAll(temp2)
.ReadToWrite(temp1[0])
.ReadToWrite(temp1[1])
.Build();
passes[6].Bind(cmdbuf, pass.descriptor_sets[4]);
cmdbuf.Dispatch(groups_x, groups_y, 1);
LsfgBarriers(cmdbuf)
.WriteToRead(temp1[0])
.WriteToRead(temp1[1])
.ReadToWriteAll(temp2)
.Build();
passes[7].Bind(cmdbuf, pass.descriptor_sets[5]);
cmdbuf.Dispatch(groups_x, groups_y, 1);
LsfgBarriers(cmdbuf)
.WriteToReadAll(temp2)
.ReadToWrite(temp1[0])
.ReadToWrite(temp1[1])
.Build();
passes[8].Bind(cmdbuf, pass.descriptor_sets[6]);
cmdbuf.Dispatch(groups_x, groups_y, 1);
LsfgBarriers(cmdbuf)
.WriteToRead(temp1[0])
.WriteToRead(temp1[1])
.WriteToRead(previous2)
.ReadToWrite(out_image2)
.Build();
passes[9].Bind(cmdbuf, pass.descriptor_sets[7]);
cmdbuf.Dispatch(groups_x, groups_y, 1);
}
} // namespace Vulkan
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