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// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "common/common_types.h"
#include "video_core/host_shaders/fxaa_frag_spv.h"
#include "video_core/host_shaders/fxaa_vert_spv.h"
#include "video_core/renderer_vulkan/present/fxaa.h"
#include "video_core/renderer_vulkan/present/util.h"
#include "video_core/renderer_vulkan/vk_scheduler.h"
#include "video_core/renderer_vulkan/vk_shader_util.h"
#include "video_core/vulkan_common/vulkan_device.h"
namespace Vulkan {
FXAA::FXAA(const Device& device, MemoryAllocator& allocator, size_t image_count, VkExtent2D extent)
: m_extent(extent)
, m_image_count(u32(image_count))
{
CreateImages(device, allocator);
CreateRenderPasses(device);
CreateSampler(device);
CreateShaders(device);
CreateDescriptorPool(device);
CreateDescriptorSetLayouts(device);
CreateDescriptorSets(device);
CreatePipelineLayouts(device);
CreatePipelines(device);
}
FXAA::~FXAA() = default;
void FXAA::CreateImages(const Device& device, MemoryAllocator& allocator) {
for (u32 i = 0; i < m_image_count; i++) {
Image& image = m_dynamic_images.emplace_back();
image.image = CreateWrappedImage(allocator, m_extent, VK_FORMAT_R16G16B16A16_SFLOAT);
image.image_view = CreateWrappedImageView(device, image.image, VK_FORMAT_R16G16B16A16_SFLOAT);
}
}
void FXAA::CreateRenderPasses(const Device& device) {
m_renderpass = CreateWrappedRenderPass(device, VK_FORMAT_R16G16B16A16_SFLOAT);
for (auto& image : m_dynamic_images) {
image.framebuffer =
CreateWrappedFramebuffer(device, m_renderpass, image.image_view, m_extent);
}
}
void FXAA::CreateSampler(const Device& device) {
m_sampler = CreateWrappedSampler(device);
}
void FXAA::CreateShaders(const Device& device) {
m_vertex_shader = CreateWrappedShaderModule(device, FXAA_VERT_SPV);
m_fragment_shader = CreateWrappedShaderModule(device, FXAA_FRAG_SPV);
}
void FXAA::CreateDescriptorPool(const Device& device) {
// 2 descriptors, 1 descriptor set per image
m_descriptor_pool = CreateWrappedDescriptorPool(device, 2 * m_image_count, m_image_count);
}
void FXAA::CreateDescriptorSetLayouts(const Device& device) {
m_descriptor_set_layout =
CreateWrappedDescriptorSetLayout(device, {VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER});
}
void FXAA::CreateDescriptorSets(const Device& device) {
VkDescriptorSetLayout layout = *m_descriptor_set_layout;
for (auto& images : m_dynamic_images) {
images.descriptor_sets = CreateWrappedDescriptorSets(m_descriptor_pool, {layout});
}
}
void FXAA::CreatePipelineLayouts(const Device& device) {
m_pipeline_layout = CreateWrappedPipelineLayout(device, m_descriptor_set_layout);
}
void FXAA::CreatePipelines(const Device& device) {
m_pipeline = CreateWrappedPipeline(device, m_renderpass, m_pipeline_layout,
std::tie(m_vertex_shader, m_fragment_shader));
}
void FXAA::UpdateDescriptorSets(const Device& device, VkImageView image_view, size_t image_index) {
Image& image = m_dynamic_images[image_index];
std::vector<VkDescriptorImageInfo> image_infos;
std::vector<VkWriteDescriptorSet> updates;
image_infos.reserve(2);
updates.push_back(CreateWriteDescriptorSet(image_infos, *m_sampler, image_view, image.descriptor_sets[0], 0));
updates.push_back(CreateWriteDescriptorSet(image_infos, *m_sampler, image_view, image.descriptor_sets[0], 1));
device.GetLogical().UpdateDescriptorSets(updates, {});
}
void FXAA::UploadImages(const Device& device, Scheduler& scheduler) {
if (m_images_ready) {
return;
}
scheduler.Record([&](vk::CommandBuffer cmdbuf) {
for (auto& image : m_dynamic_images) {
ClearColorImage(cmdbuf, *image.image);
}
});
scheduler.Finish();
m_images_ready = true;
}
void FXAA::Draw(const Device& device, Scheduler& scheduler, size_t image_index, VkImage* inout_image, VkImageView* inout_image_view) {
const Image& image{m_dynamic_images[image_index]};
const VkImage input_image{*inout_image};
const VkImage output_image{*image.image};
const VkDescriptorSet descriptor_set{image.descriptor_sets[0]};
const VkFramebuffer framebuffer{*image.framebuffer};
const VkRenderPass renderpass{*m_renderpass};
const VkPipeline pipeline{*m_pipeline};
const VkPipelineLayout layout{*m_pipeline_layout};
const VkExtent2D extent{m_extent};
UploadImages(device, scheduler);
UpdateDescriptorSets(device, *inout_image_view, image_index);
scheduler.RequestOutsideRenderPassOperationContext();
scheduler.Record([=](vk::CommandBuffer cmdbuf) {
TransitionImageLayout(cmdbuf, input_image, VK_IMAGE_LAYOUT_GENERAL);
TransitionImageLayout(cmdbuf, output_image, VK_IMAGE_LAYOUT_GENERAL);
BeginRenderPass(cmdbuf, renderpass, framebuffer, extent);
cmdbuf.BindPipeline(VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
cmdbuf.BindDescriptorSets(VK_PIPELINE_BIND_POINT_GRAPHICS, layout, 0, descriptor_set, {});
cmdbuf.Draw(3, 1, 0, 0);
cmdbuf.EndRenderPass();
TransitionImageLayout(cmdbuf, output_image, VK_IMAGE_LAYOUT_GENERAL);
});
*inout_image = *image.image;
*inout_image_view = *image.image_view;
}
} // namespace Vulkan
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