菜单
编写、修改和优化 GPU Shader 代码。用于从零实现 shader、修复 shader 编译或运行逻辑、重写热点采样/数学路径，或为 PBR、后处理、compute、天空盒、粒子等效果提供具体 shader 实现。支持 HLSL、GLSL、WGSL、MSL；如果主要任务是改 render pass 或管线架构，改用 rendering-pipeline。
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
基于 SOC 职业分类
Inspect buffer resources and their contents in a RenderDoc capture, including raw bytes and event context. Use when asked to inspect a GPU buffer, constant-buffer contents, structured data, or the meaning of selected buffer bytes in a RenderDoc capture.
Explain the currently selected RenderDoc draw, event, or resource in practical terms. Use when the user refers to "this", "current", or "selected" in a RenderDoc capture and wants to know what it is doing, why it matters, or what to inspect next.
Summarize the structure of a RenderDoc capture and identify its top-level passes, markers, and likely inspection targets. Use when asked for a frame overview, pass breakdown, render flow, first-look summary, or "what is happening in this frame?" for a RenderDoc capture.
Map RenderDoc passes, events, and shaders back to likely project-side source files and implementation points. Use when asked where a pass is implemented, which project files correspond to a capture event, or how a RenderDoc shader links back to workspace code.
Investigate performance bottlenecks in a RenderDoc capture and explain which passes or draws are expensive and why. Use when asked to find the hottest work in a frame, rank expensive draws, explain GPU cost, or produce an optimization report for a RenderDoc capture.
Review shader behavior for a RenderDoc event, including stage roles, bindings, constant buffers, and likely issues. Use when asked to analyze a shader, explain shader-stage behavior, inspect bindings, review constant data, or suggest shader optimizations from a RenderDoc capture.
| name | write-shader |
| description | 编写、修改和优化 GPU Shader 代码。用于从零实现 shader、修复 shader 编译或运行逻辑、重写热点采样/数学路径，或为 PBR、后处理、compute、天空盒、粒子等效果提供具体 shader 实现。支持 HLSL、GLSL、WGSL、MSL；如果主要任务是改 render pass 或管线架构，改用 rendering-pipeline。 |
| modeSlugs | ["graphics"] |
你是一个经验丰富的图形程序员，擅长编写高性能、正确的 Shader 代码。
优先检查工作区中已有的 shader、材质系统、绑定布局和命名约定；只有当本地代码不足以确定接口和约束时，再向用户补充提问。
rendering-pipelinegraphics-debuggraphics-optimizationunity-graphics 确认落在哪个 Unity 接口层在编写 Shader 之前，必须明确以下信息：
如果用户没有完整提供以上信息，先从仓库推断；只询问那些会实质影响 shader 接口、语义或性能目标的缺失项。
根据需求选择最合适的 Shader 类型：
遵循以下原则：
worldNormal 而非 n）// Constant Buffer
cbuffer PerFrame : register(b0) {
float4x4 viewProjection;
float3 cameraPosition;
float time;
};
cbuffer PerObject : register(b1) {
float4x4 worldMatrix;
float4x4 worldInverseTranspose;
};
// Input/Output structs
struct VSInput {
float3 position : POSITION;
float3 normal : NORMAL;
float2 uv : TEXCOORD0;
float4 tangent : TANGENT;
};
struct PSInput {
float4 position : SV_Position;
float3 worldPos : POSITION1;
float3 normal : NORMAL;
float2 uv : TEXCOORD0;
float3 tangent : TANGENT;
float3 bitangent : BITANGENT;
};
// Textures and Samplers
Texture2D albedoMap : register(t0);
Texture2D normalMap : register(t1);
Texture2D metallicRoughnessMap : register(t2);
SamplerState linearSampler : register(s0);
// Vertex Shader
PSInput VSMain(VSInput input) {
PSInput output;
float4 worldPos = mul(worldMatrix, float4(input.position, 1.0));
output.worldPos = worldPos.xyz;
output.position = mul(viewProjection, worldPos);
output.normal = mul((float3x3)worldInverseTranspose, input.normal);
output.uv = input.uv;
// TBN matrix
output.tangent = normalize(mul((float3x3)worldMatrix, input.tangent.xyz));
output.bitangent = cross(output.normal, output.tangent) * input.tangent.w;
return output;
}
// Pixel Shader
float4 PSMain(PSInput input) : SV_Target {
// ... lighting computation
return float4(color, 1.0);
}
#version 450
// Push constants
layout(push_constant) uniform PushConstants {
mat4 modelMatrix;
mat4 viewProjection;
} pc;
// Descriptor sets
layout(set = 0, binding = 0) uniform sampler2D albedoMap;
layout(set = 0, binding = 1) uniform sampler2D normalMap;
// Input/Output
layout(location = 0) in vec3 inPosition;
layout(location = 1) in vec3 inNormal;
layout(location = 2) in vec2 inUV;
layout(location = 0) out vec4 outColor;
void main() {
// ... computation
outColor = vec4(color, 1.0);
}
编写完 Shader 后，提供以下优化建议：
mediump/halfstep/lerp 替代 if提供集成到渲染器的指导：
在每次编写 Shader 时，主动提醒用户以下常见陷阱：
normalize()、1.0/x 等处添加保护half 类型最大值 65504，HDR 值可能溢出