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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_beta.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;
constexpr u32 OUTPUT_TILE_SHIFT = 5;
[[nodiscard]] u32 GroupCount(u32 size, u32 shift) {
return (size + (1u << shift) - 1) >> shift;
}
} // Anonymous namespace
LsfgBeta::LsfgBeta(const Device& device, MemoryAllocator& memory_allocator,
const LsfgShaders& shaders, LsfgResources& resources,
vk::DescriptorPool& descriptor_pool, LsfgImageHistory& inputs_)
: inputs{&inputs_} {
using namespace VideoCore::FrameGen::PerformanceShader;
passes[0] = LsfgPass(device, shaders, BETA[0],
{{1, VK_DESCRIPTOR_TYPE_SAMPLER},
{6, VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE},
{2, VK_DESCRIPTOR_TYPE_STORAGE_IMAGE}});
for (size_t i = 1; i < LSFG_BETA_STAGES - 1; ++i) {
passes[i] = LsfgPass(device, shaders, BETA[i],
{{1, VK_DESCRIPTOR_TYPE_SAMPLER},
{2, VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE},
{2, VK_DESCRIPTOR_TYPE_STORAGE_IMAGE}});
}
passes[4] = LsfgPass(device, shaders, BETA[4],
{{1, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER},
{1, VK_DESCRIPTOR_TYPE_SAMPLER},
{2, VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE},
{6, VK_DESCRIPTOR_TYPE_STORAGE_IMAGE}});
const VkExtent2D extent = (*inputs)[0][0].Extent();
for (size_t i = 0; i < temp1.size(); ++i) {
temp1[i] = LsfgImage(device, memory_allocator, extent);
temp2[i] = LsfgImage(device, memory_allocator, extent);
}
for (size_t i = 0; i < LSFG_BETA_OUTPUTS; ++i) {
const VkExtent2D level_extent{
.width = extent.width >> i,
.height = extent.height >> i,
};
out_images[i] = LsfgImage(device, memory_allocator, level_extent, LSFG_FLOW_FORMAT);
}
std::vector<VkDescriptorSetLayout> layouts;
for (size_t i = 0; i < LSFG_HISTORY_SLOTS; ++i) {
layouts.push_back(passes[0].SetLayout());
}
for (size_t i = 1; i < LSFG_BETA_STAGES; ++i) {
layouts.push_back(passes[i].SetLayout());
}
owned_sets = CreateWrappedDescriptorSets(descriptor_pool, layouts);
for (size_t i = 0; i < LSFG_HISTORY_SLOTS; ++i) {
first_descriptor_sets[i] = owned_sets[i];
}
for (size_t i = 0; i < LSFG_BETA_STAGES - 1; ++i) {
descriptor_sets[i] = owned_sets[LSFG_HISTORY_SLOTS + i];
}
const VkSampler sampler = resources.GetSampler();
const VkSampler border_sampler = resources.GetSampler(
VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER, VK_COMPARE_OP_NEVER, true);
for (size_t i = 0; i < LSFG_HISTORY_SLOTS; ++i) {
LsfgDescriptorWriter(first_descriptor_sets[i])
.AddSampler(border_sampler)
.AddSampledImages((*inputs)[(i + 1) % LSFG_HISTORY_SLOTS])
.AddSampledImages((*inputs)[(i + 2) % LSFG_HISTORY_SLOTS])
.AddSampledImages((*inputs)[i % LSFG_HISTORY_SLOTS])
.AddStorageImages(temp1)
.Build(device);
}
LsfgDescriptorWriter(descriptor_sets[0])
.AddSampler(sampler)
.AddSampledImages(temp1)
.AddStorageImages(temp2)
.Build(device);
LsfgDescriptorWriter(descriptor_sets[1])
.AddSampler(sampler)
.AddSampledImages(temp2)
.AddStorageImages(temp1)
.Build(device);
LsfgDescriptorWriter(descriptor_sets[2])
.AddSampler(sampler)
.AddSampledImages(temp1)
.AddStorageImages(temp2)
.Build(device);
LsfgDescriptorWriter(descriptor_sets[3])
.AddUniformBuffer(resources.GetBuffer(0.5f), LsfgResources::BufferSize())
.AddSampler(sampler)
.AddSampledImages(temp2)
.AddStorageImages(out_images)
.Build(device);
}
void LsfgBeta::Dispatch(vk::CommandBuffer cmdbuf, u64 frame_count) {
const VkExtent2D extent = temp1[0].Extent();
const u32 groups_x = GroupCount(extent.width, DISPATCH_TILE_SHIFT);
const u32 groups_y = GroupCount(extent.height, DISPATCH_TILE_SHIFT);
LsfgBarriers barriers(cmdbuf);
for (auto& slot : *inputs) {
barriers.WriteToReadAll(slot);
}
barriers.ReadToWriteAll(temp1).Build();
passes[0].Bind(cmdbuf, first_descriptor_sets[frame_count % LSFG_HISTORY_SLOTS]);
cmdbuf.Dispatch(groups_x, groups_y, 1);
LsfgBarriers(cmdbuf).WriteToReadAll(temp1).ReadToWriteAll(temp2).Build();
passes[1].Bind(cmdbuf, descriptor_sets[0]);
cmdbuf.Dispatch(groups_x, groups_y, 1);
LsfgBarriers(cmdbuf).WriteToReadAll(temp2).ReadToWriteAll(temp1).Build();
passes[2].Bind(cmdbuf, descriptor_sets[1]);
cmdbuf.Dispatch(groups_x, groups_y, 1);
LsfgBarriers(cmdbuf).WriteToReadAll(temp1).ReadToWriteAll(temp2).Build();
passes[3].Bind(cmdbuf, descriptor_sets[2]);
cmdbuf.Dispatch(groups_x, groups_y, 1);
LsfgBarriers(cmdbuf).WriteToReadAll(temp2).ReadToWriteAll(out_images).Build();
passes[4].Bind(cmdbuf, descriptor_sets[3]);
cmdbuf.Dispatch(GroupCount(extent.width, OUTPUT_TILE_SHIFT),
GroupCount(extent.height, OUTPUT_TILE_SHIFT), 1);
}
} // namespace Vulkan
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