59 lines
1.4 KiB
Markdown
59 lines
1.4 KiB
Markdown
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---
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title: PS4支持
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date: 2026-05-03 00:00:00
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excerpt: PS4 平台 PSSL Shader 兼容层、HDR Resolve 和平台特化着色器
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tags:
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- ARC
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- Platform
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- PS4
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rating: ⭐
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---
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# PS4 支持
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返回 [[Platform]]
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## 概述
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为 PS4（Orbis）平台提供完整的 Shader 兼容层和平台特化着色器。
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## PSSL 兼容层
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`Public/Platform/PS4/PS4Common.ush` 提供 HLSL → PSSL（PlayStation Shader Language）的映射：
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- 数据类型映射（`float4` → PSSL 等效）
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- Sampler 设置（各向异性过滤、比较采样器）
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- Wave Intrinsics 映射（`WaveActiveSum`、`WaveActiveBallot` 等）
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- 纹理采样函数兼容
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## 平台特化着色器
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`Private/Platform/PS4/` 目录包含 6 个平台着色器：
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| 文件 | 用途 |
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|------|------|
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| HDR Resolve | 高动态范围缓冲区解析 |
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| RT Write Mask | Render Target 写入遮罩 |
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| Wide Custom Resolve | 宽格式自定义解析 |
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## DOF 修复
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`PostProcessDOF.usf` 中的 PS4 特化修改：
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```hlsl
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#if !MOBILE_SHADING
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// PS4: ReadFullResAndDepth 函数签名调整
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float4 ReadFullResAndDepth(float2 UV, float Depth)
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#endif
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```
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以及 `RED_CHANGE` 深度 Gather 优化。
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## 修改文件列表
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| 文件 | 修改类型 |
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|------|---------|
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| `Shaders/Public/Platform/PS4/PS4Common.ush` | **新增** — PSSL 兼容层 |
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| `Shaders/Private/Platform/PS4/` (6 files) | **新增** — 平台着色器 |
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| `Shaders/Private/PostProcessDOF.usf` | PS4 DOF 修复 |
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