القائمة
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。
التثبيت باستخدام Codex أو Claude انسخ هذا Prompt والصقه في Codex أو Claude أو مساعد آخر ليراجع صفحة Skill ويثبّتها لك.
استنادا إلى تصنيف SOC المهني
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