atdunbg
a1c6ad20be
三个运行时开关（Shadows/TAA/Bloom）与 9 种调试视图（Final/ TemporalDiff/HDR/TAAColor/Bloom/Velocity/ShadowMap0-2）。 统一设计：开关状态收敛 FrameSceneData 契约，SceneRenderer 唯一 写入、各 pass 只读（零虚接口路由）；调试视图经 tonemap push int 路由已绑定的中间目标（声明超集、运行时零重绑）；HDR 域 资源过同一 tonemap 保证观感可比。 - Shadows：ShadowPass lambda 空转 + frag cascadeSplits.w 短路 - TAA：alpha=0 直通 + SceneRenderer 停投影抖动（同一持有者同步） - Bloom：3 子 pass 空转 + tonemap 强度归零 - Renderer 门面 Get/Set 转发，App ImGui 3 Checkbox + Combo - PostProcessParams 瘦身为纯数值参数，showTemporalDiff 被取缔
55 lines
2.2 KiB
C++
55 lines
2.2 KiB
C++
//
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// Created by atdunbg on 2026/9/23.
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//
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#include <Engine/Renderer/Passes/TAAPass.h>
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#include <Engine/Core/FrameContext.h>
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namespace Engine::Passes
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{
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TAAPass::TAAPass(FullscreenGpu& gpu, FrameSceneData& frame, f32 historyAlpha,
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RG::TextureHandle hdrColor, RG::TextureHandle velocity,
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RG::TextureHandle taaColor)
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: m_Gpu(gpu), m_Frame(frame), m_HistoryAlpha(historyAlpha),
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m_HDR(hdrColor), m_Velocity(velocity), m_TAAColor(taaColor)
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{
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m_Sets.resize(kMaxFramesInFlight);
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for (u32 slot = 0; slot < kMaxFramesInFlight; ++slot) {
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m_Sets[slot] = m_Gpu.AllocateSet();
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}
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}
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void TAAPass::Register(RG::RenderGraph& rg)
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{
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rg.AddPass("TAA",
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[this](RG::RenderGraphContext& ctx) {
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// TAA 关闭：alpha=0 → mix(cur, hist, 0) 直通当前帧
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//（抖动已由 SceneRenderer 同步停掉，画面静止无锯齿晃动）
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const f32 alpha = m_Frame.taaEnabled ? m_HistoryAlpha : 0.0f;
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m_Gpu.RecordFullscreen(ctx, ctx.View(m_TAAColor), m_Gpu.taaFrag,
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m_Sets[ctx.frame.frameSlot],
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FullscreenPush{0.0f, alpha, 0.0f, 0.0f});
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})
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.Read(m_HDR, RG::ResourceUse::ShaderRead,
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vk::ShaderStageFlagBits::eFragment)
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.Read(m_Velocity, RG::ResourceUse::ShaderRead,
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vk::ShaderStageFlagBits::eFragment)
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// 自引用历史：TAAColor 的上一帧槽位就是累积历史
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.ReadHistory(m_TAAColor, RG::ResourceUse::ShaderRead,
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vk::ShaderStageFlagBits::eFragment)
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.Write(m_TAAColor, RG::ResourceUse::ColorAttachment);
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}
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void TAAPass::OnTargetsRebuilt(RG::RenderGraph& rg)
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{
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for (u32 slot = 0; slot < kMaxFramesInFlight; ++slot) {
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m_Gpu.UpdateSetInput(m_Sets[slot], 0, rg, m_HDR, slot);
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m_Gpu.UpdateSetInput(m_Sets[slot], 1, rg, m_Velocity, slot);
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// binding2 = 历史（上一帧槽位镜像）
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m_Gpu.UpdateSetInput(m_Sets[slot], 2, rg, m_TAAColor,
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rg.HistorySlot(slot));
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}
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}
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} // namespace Engine::Passes
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