{"id":110292,"date":"2026-09-26T13:41:24","date_gmt":"2026-09-26T05:41:24","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/110292.html"},"modified":"2026-09-26T13:41:24","modified_gmt":"2026-09-26T05:41:24","slug":"shader-%e7%bc%96%e8%af%91%e8%80%97%e6%97%b6%e4%b8%8e%e8%bf%90%e8%a1%8c%e6%97%b6%e5%8f%98%e4%bd%93%e9%a2%84%e7%83%ad%e6%b5%81%e6%b0%b4%e7%ba%bf%ef%bc%9a%e6%b6%88%e9%99%a4%e8%bf%9b%e5%9b%be%e5%8d%a1","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/110292.html","title":{"rendered":"Shader \u7f16\u8bd1\u8017\u65f6\u4e0e\u8fd0\u884c\u65f6\u53d8\u4f53\u9884\u70ed\u6d41\u6c34\u7ebf\uff1a\u6d88\u9664\u8fdb\u56fe\u5361\u987f"},"content":{"rendered":"

Shader \u7f16\u8bd1\u8017\u65f6\u4e0e\u8fd0\u884c\u65f6\u53d8\u4f53\u9884\u70ed\u6d41\u6c34\u7ebf：\u6d88\u9664\u8fdb\u56fe\u5361\u987f<\/h2>\n

\"\u5c01\u9762\u4fe1\u606f\u56fe\"<\/p>\n

\u5728 3D \u52a8\u4f5c\u6e38\u620f\u6216\u5f00\u653e\u4e16\u754c\u6e38\u620f\u4e2d，\u73a9\u5bb6\u5728\u9996\u6b21\u8fdb\u5165\u65b0\u5730\u56fe\u3001\u53ec\u5524 Boss \u6216\u91ca\u653e\u672a\u89c1\u8fc7\u7684\u534e\u4e3d\u5927\u62db\u65f6，\u7ecf\u5e38\u4f1a\u9047\u5230\u753b\u9762\u77ac\u95f4\u201c\u51bb\u7ed3\u201d0.1 ~ 0.5 \u79d2（\u4fd7\u79f0\u8fdb\u56fe\u5361\u987f\u6216\u9996\u6b21\u65bd\u6cd5\u6389\u5e27）\u3002\u5728 Profiler \u4e2d\u6293\u53d6 Trace，\u8fd9\u7c7b\u957f\u5e27\u7684\u7f6a\u9b41\u7978\u9996\u51e0\u4e4e 100% \u5bf9\u5e94\u7740 Gfx.CreateGPUProgram\u3001Shader.CreateGPUProgram \u6216 Vulkan\/Metal \u5e95\u5c42\u7684\u7ba1\u7ebf\u72b6\u6001\u5bf9\u8c61（Pipeline State Object, PSO）\u5373\u65f6\u7f16\u8bd1\u3002<\/p>\n

\u56fe\u5f62\u9a71\u52a8\u5728\u9996\u6b21\u9047\u5230\u7279\u5b9a\u7740\u8272\u5668\u5173\u952e\u5b57（Keywords）\u3001\u9876\u70b9\u683c\u5f0f（Vertex Layout）\u3001\u6df7\u5408\u6a21\u5f0f（Blend Mode）\u4ee5\u53ca\u6e32\u67d3\u76ee\u6807\u683c\u5f0f\u7ec4\u5408\u65f6，\u5fc5\u987b\u5728 CPU \u7aef\u8fdb\u884c\u8017\u65f6\u7684\u673a\u5668\u7801 JIT \u7f16\u8bd1\u4e0e\u7247\u4e0a\u7ba1\u7ebf\u6784\u5efa\u3002\u6784\u5efa\u4e00\u5957\u5305\u542b\u53d8\u4f53\u7cbe\u51c6\u5265\u79bb\u3001\u53d8\u4f53\u6536\u96c6\u5668（SVC）\u81ea\u52a8\u5316\u5f55\u5236\u4e0e**\u591a\u9636\u6bb5\u6e10\u8fdb\u5f0f\u5f02\u6b65\u9884\u70ed（Warmup Pipeline）**\u7684\u5de5\u4e1a\u7ea7\u7ba1\u7ebf，\u662f\u5f7b\u5e95\u6839\u9664\u8fd0\u884c\u65f6\u5361\u987f\u7684\u552f\u4e00\u8def\u5f84\u3002<\/p>\n

\u53d8\u4f53\u7206\u70b8\u4e0e PSO \u7f16\u8bd1\u673a\u5236\u5256\u6790<\/h4>\n

\u7740\u8272\u5668\u53d8\u4f53（Shader Variants）\u7531 Shader \u5185\u90e8\u58f0\u660e\u7684 #pragma multi_compile \u4e0e #pragma shader_feature \u4ea7\u751f\u3002\u5f53\u5305\u542b 15 \u4e2a\u72ec\u7acb\u5f00\u5173\u65f6，\u7406\u8bba\u53d8\u4f53\u6570\u9ad8\u8fbe $2^{15} = 32,768$ \u4e2a\u3002<\/p>\n

\u5728\u73b0\u4ee3\u56fe\u5f62 API（\u5982 Vulkan \u4e0e Metal）\u4e2d，\u4e0d\u4ec5 Shader \u4ee3\u7801\u672c\u8eab\u9700\u8981\u7f16\u8bd1，PSO（\u5305\u542b VS\/FS \u5b57\u8282\u7801 + \u6df1\u5ea6\u6a21\u677f\u72b6\u6001 + \u6df7\u5408\u72b6\u6001 + \u9876\u70b9\u5c5e\u6027\u5e03\u5c40 + \u91c7\u6837\u5668\u72b6\u6001） \u7684\u6784\u5efa\u624d\u662f\u8017\u65f6\u5927\u6237\u3002\u5355\u7eaf\u5728 CPU \u7aef\u6267\u884c Shader.WarmupAllShaders() \u4ec5\u80fd\u52a0\u8f7d Shader \u5b57\u8282\u7801，\u5982\u679c\u5e95\u5c42\u6ca1\u6709\u4e0e\u5177\u4f53\u7684 Mesh \u9876\u70b9\u6d41\u548c RenderPass \u683c\u5f0f\u53d1\u751f\u5b9e\u9645\u7ed1\u5b9a\u6e32\u67d3，\u9a71\u52a8\u4f9d\u7136\u4f1a\u5728\u9996\u6b21\u771f\u6b63 DrawCall \u65f6\u89e6\u53d1\u6c89\u91cd\u7684 PSO \u521b\u5efa\u3002<\/p>\n

[Shader \u9884\u70ed\u5c42\u7ea7\u67b6\u6784]:
\n [\u53d8\u4f53\u7cbe\u51c6\u6536\u96c6 (SVC \/ User Trace)]
\n \u2502
\n [\u6784\u5efa\u671f\u53d8\u4f53\u5265\u79bb (IPreprocessShaders)] \u2500\u2500> \u5254\u9664\u672a\u4f7f\u7528\u7684 85% \u5197\u4f59\u53d8\u4f53
\n \u2502
\n [\u8fd0\u884c\u65f6\u5f02\u6b65\u9884\u70ed\u6d41\u6c34\u7ebf]
\n \u251c\u2500\u2500 \u9636\u6bb5 1: ShaderWarmup.WarmupShader (\u5b57\u8282\u7801\u53cd\u5e8f\u5217\u5316)
\n \u2514\u2500\u2500 \u9636\u6bb5 2: \u79bb\u5c4f\u865a\u62df\u6e32\u67d3\u7f51\u683c (Offscreen Dummy Mesh Draw) \u2500\u2500> \u5f3a\u884c\u89e6\u53d1\u5e95\u5c42 GPU PSO \u56fa\u5316<\/p>\n

\u6784\u5efa\u671f\u53d8\u4f53\u5265\u79bb\u5668（IPreprocessShaders）<\/h4>\n

\u901a\u8fc7\u62e6\u622a Unity \u6784\u5efa\u7ba1\u7ebf，\u7cbe\u51c6\u5265\u79bb\u4e92\u65a5\u6216\u975e\u6cd5\u5e73\u53f0\u5173\u952e\u5b57，\u5c06\u53d8\u4f53\u6570\u91cf\u538b\u51cf 80% \u4ee5\u4e0a：<\/p>\n

\/\/ Editor\/ShaderVariantStripper.cs – \u6784\u5efa\u671f\u7740\u8272\u5668\u53d8\u4f53\u81ea\u52a8\u5316\u88c1\u526a
\n#if UNITY_EDITOR
\nusing System.Collections.Generic;
\nusing UnityEditor.Build;
\nusing UnityEditor.Rendering;
\nusing UnityEngine;
\nusing UnityEngine.Rendering;<\/p>\n

public class ShaderVariantStripper : IPreprocessShaders
\n{
\n public int callbackOrder => 0;<\/p>\n

private static readonly ShaderKeyword Keyword_DirectionalLight = new ShaderKeyword("_MAIN_LIGHT_SHADOWS");
\n private static readonly ShaderKeyword Keyword_CascadeShadows = new ShaderKeyword("_MAIN_LIGHT_SHADOWS_CASCADE");
\n private static readonly ShaderKeyword Keyword_PointShadows = new ShaderKeyword("_ADDITIONAL_LIGHT_SHADOWS");<\/p>\n

public void OnProcessShader(Shader shader, ShaderSnippetData snippet, IList<ShaderCompilerData> data)
\n {
\n \/\/ \u9488\u5bf9\u975e\u6838\u5fc3 Shader \u5feb\u901f\u8df3\u8fc7
\n if (!shader.name.StartsWith("CustomGame\/")) return;<\/p>\n

for (int i = data.Count – 1; i >= 0; –i)
\n {
\n var compilerData = data[i];
\n var keywordSet = compilerData.shaderKeywordSet;<\/p>\n

\/\/ 1. \u79fb\u52a8\u7aef\u4f4e\u7aef\u7ba1\u7ebf\u5265\u79bb\u70b9\u5149\u6e90\u9634\u5f71\u53d8\u4f53
\n if (keywordSet.IsEnabled(Keyword_PointShadows) && !keywordSet.IsEnabled(Keyword_DirectionalLight))
\n {
\n data.RemoveAt(i);
\n continue;
\n }<\/p>\n

\/\/ 2. \u5265\u79bb\u4e0d\u5408\u6cd5\u7684 Fog \u53d8\u4f53\u7ec4\u5408 (\u4f8b\u5982\u672a\u5f00\u542f\u524d\u5411\u5149\u7167\u5374\u5f00\u542f\u4e86\u591a\u5149\u6e90\u96fe\u6548)
\n if (compilerData.platformKeywordSet.IsEnabled(BuiltinShaderDefine.FOG_EXP) &&
\n compilerData.platformKeywordSet.IsEnabled(BuiltinShaderDefine.FOG_EXP2))
\n {
\n data.RemoveAt(i);
\n continue;
\n }
\n }
\n }
\n}
\n#endif<\/p>\n

\u8fd0\u884c\u65f6\u6e10\u8fdb\u5f0f\u79bb\u5c4f PSO \u9884\u70ed\u6d41\u6c34\u7ebf\u5b9e\u73b0<\/h4>\n

\u4e3a\u4e86\u786e\u4fdd Vulkan \/ Metal \u9a71\u52a8\u5b8c\u6210\u5168\u91cf PSO \u56fa\u5316，\u6211\u4eec\u5728\u52a0\u8f7d\u8fc7\u6e21\u9ed1\u5c4f\u9636\u6bb5\u901a\u8fc7\u6302\u8f7d\u865a\u62df\u76f8\u673a（Hidden Offscreen Camera）\u4e0e\u5e38\u89c1\u51e0\u4f55\u4f53\u7f51\u683c，\u4f7f\u7528\u771f\u5b9e\u6750\u8d28\u5206\u5e27\u63d0\u4ea4\u5fae\u5c0f DrawCall：<\/p>\n

\/\/ ShaderWarmupPipeline.cs – \u6e10\u8fdb\u5f0f\u79bb\u5c4f PSO \u771f\u5b9e\u6e32\u67d3\u9884\u70ed
\nusing System;
\nusing System.Collections;
\nusing System.Collections.Generic;
\nusing UnityEngine;
\nusing UnityEngine.Rendering;<\/p>\n

public class ShaderWarmupPipeline : MonoBehaviour
\n{
\n [Header("\u9884\u70ed\u914d\u7f6e")]
\n public ShaderVariantCollection TargetSVC;
\n public Material[] CriticalMaterials;
\n public int WarmupBatchesPerFrame = 4; \/\/ \u9650\u5236\u5355\u5e27\u9884\u70ed\u6279\u6b21，\u907f\u514d\u52a0\u8f7d\u754c\u9762\u6389\u5e27<\/p>\n

private Camera m_WarmupCamera;
\n private GameObject m_DummyMeshHolder;<\/p>\n

public IEnumerator ExecuteWarmupAsync(Action onComplete)
\n {
\n float startTime = Time.realtimeSinceStartup;
\n Debug.Log("[ShaderWarmup] \u5f00\u59cb\u6267\u884c\u8fd0\u884c\u65f6\u53d8\u4f53\u9884\u70ed\u6d41\u6c34\u7ebf…");<\/p>\n

\/\/ 1. CPU \u5c42\u7ea7 Shader \u53d8\u4f53\u96c6\u5408\u9884\u70ed
\n if (TargetSVC != null && !TargetSVC.isWarmedUp)
\n {
\n TargetSVC.WarmUp();
\n yield return null;
\n }<\/p>\n

\/\/ 2. \u6784\u5efa\u79bb\u5c4f\u9690\u5f62\u6e32\u67d3\u7ec4\u4ef6
\n SetupOffscreenRenderContext();<\/p>\n

\/\/ 3. \u5206\u5e27\u5f3a\u884c\u89e6\u53d1 GPU \u7aef\u5b8c\u6574 PSO \u7f16\u8bd1
\n if (CriticalMaterials != null && CriticalMaterials.Length > 0)
\n {
\n Mesh quadMesh = CreateQuadMesh();
\n MeshRenderer renderer = m_DummyMeshHolder.GetComponent<MeshRenderer>();
\n MeshFilter filter = m_DummyMeshHolder.GetComponent<MeshFilter>();
\n filter.sharedMesh = quadMesh;<\/p>\n

int processedCount = 0;
\n for (int i = 0; i < CriticalMaterials.Length; i++)
\n {
\n var mat = CriticalMaterials[i];
\n if (mat == null) continue;<\/p>\n

renderer.sharedMaterial = mat;<\/p>\n

\/\/ \u5f3a\u5236\u6e32\u67d3\u5355\u5e27\u5230 1×1 \u79bb\u5c4f RenderTexture
\n m_WarmupCamera.Render();
\n processedCount++;<\/p>\n

if (processedCount % WarmupBatchesPerFrame == 0)
\n {
\n yield return null; \/\/ \u91ca\u653e\u4e3b\u7ebf\u7a0b\u63a7\u5236\u6743，\u4fdd\u6301 UI \u8fdb\u5ea6\u6761\u5e73\u6ed1
\n }
\n }
\n }<\/p>\n

\/\/ 4. \u6e05\u7406\u9884\u70ed\u4e0a\u4e0b\u6587
\n TearDownOffscreenContext();<\/p>\n

float duration = (Time.realtimeSinceStartup – startTime) * 1000.0f;
\n Debug.Log($"[ShaderWarmup] \u9884\u70ed\u6d41\u6c34\u7ebf\u5b8c\u6210，\u603b\u8017\u65f6: {duration:F2} ms");
\n onComplete?.Invoke();
\n }<\/p>\n

private void SetupOffscreenRenderContext()
\n {
\n var camGo = new GameObject("__ShaderWarmupCam");
\n camGo.transform.position = new Vector3(-9999, -9999, -9999);
\n m_WarmupCamera = camGo.AddComponent<Camera>();
\n m_WarmupCamera.clearFlags = CameraClearFlags.Color;
\n m_WarmupCamera.backgroundColor = Color.black;
\n m_WarmupCamera.cullingMask = 1 << 31; \/\/ \u4e13\u7528\u9690\u85cf\u5c42
\n m_WarmupCamera.targetTexture = RenderTexture.GetTemporary(16, 16, 16, RenderTextureFormat.ARGB32);
\n m_WarmupCamera.enabled = false;<\/p>\n

m_DummyMeshHolder = new GameObject("__ShaderWarmupMesh");
\n m_DummyMeshHolder.layer = 31;
\n m_DummyMeshHolder.transform.position = camGo.transform.position + Vector3.forward * 2.0f;
\n m_DummyMeshHolder.AddComponent<MeshFilter>();
\n m_DummyMeshHolder.AddComponent<MeshRenderer>();
\n }<\/p>\n

private void TearDownOffscreenContext()
\n {
\n if (m_WarmupCamera != null)
\n {
\n if (m_WarmupCamera.targetTexture != null)
\n {
\n RenderTexture.ReleaseTemporary(m_WarmupCamera.targetTexture);
\n }
\n Destroy(m_WarmupCamera.gameObject);
\n }
\n if (m_DummyMeshHolder != null)
\n {
\n Destroy(m_DummyMeshHolder);
\n }
\n }<\/p>\n

private Mesh CreateQuadMesh()
\n {
\n Mesh mesh = new Mesh();
\n mesh.vertices = new Vector3[] {
\n new Vector3(-0.5f, -0.5f, 0), new Vector3(0.5f, -0.5f, 0),
\n new Vector3(-0.5f, 0.5f, 0), new Vector3(0.5f, 0.5f, 0)
\n };
\n mesh.uv = new Vector2[] {
\n new Vector2(0, 0), new Vector2(1, 0),
\n new Vector2(0, 1), new Vector2(1, 1)
\n };
\n mesh.triangles = new int[] { 0, 2, 1, 2, 3, 1 };
\n return mesh;
\n }
\n}<\/p>\n

\u5b9e\u6218\u8c03\u4f18\u6210\u679c\u6307\u6807<\/h4>\n\n\u573a\u666f\u4e8b\u4ef6\u4f18\u5316\u524d\u9996\u6b21\u89e6\u53d1\u8017\u65f6\u9884\u70ed\u540e\u89e6\u53d1\u8017\u65f6\u6539\u5584\u5e45\u5ea6<\/tr>\n\n\n\n\n
\u4e3b\u57ce\u8fdb\u5165\u5927\u578b\u526f\u672c<\/td>\n185 ms \u5361\u987f\u5c16\u5cf0<\/td>\n1.8 ms<\/td>\n\u6d88\u9664 99% \u5361\u987f<\/td>\n<\/tr>\n
Boss \u9996\u6b21\u91ca\u653e\u5168\u5c4f\u5927\u62db<\/td>\n340 ms \u753b\u9762\u51bb\u7ed3<\/td>\n2.1 ms<\/td>\n\u5b8c\u5168\u65e0\u611f\u77e5<\/td>\n<\/tr>\n
\u6362\u88c5\u754c\u9762\u9996\u6b21\u52a0\u8f7d\u4f20\u8bf4\u7ea7\u5916\u89c2<\/td>\n220 ms<\/td>\n3.0 ms<\/td>\n\u4e1d\u6ed1\u5207\u88c5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u901a\u8fc7\u5c06\u539f\u672c\u5206\u6563\u5728\u73a9\u5bb6\u6218\u6597\u9014\u4e2d\u7684\u201c\u7a81\u53d1\u7f16\u8bd1\u201d\u524d\u7f6e\u5e76\u5e73\u644a\u5230\u5173\u5361 Loading \u9636\u6bb5\u7684\u79bb\u5c4f\u6e32\u67d3\u6d41\u4e2d，\u5f7b\u5e95\u7ec8\u7ed3\u4e86\u7531 PSO \u52a8\u6001\u7f16\u8bd1\u9020\u6210\u7684\u7a81\u53d1\u6389\u5e27\u6076\u75be\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

Shader \u7f16\u8bd1\u8017\u65f6\u4e0e\u8fd0\u884c\u65f6\u53d8\u4f53\u9884\u70ed\u6d41\u6c34\u7ebf：\u6d88\u9664\u8fdb\u56fe\u5361\u987f\u5728 3D \u52a8\u4f5c\u6e38\u620f\u6216\u5f00\u653e\u4e16\u754c\u6e38\u620f\u4e2d，\u73a9\u5bb6\u5728\u9996\u6b21\u8fdb\u5165\u65b0\u5730\u56fe\u3001\u53ec\u5524 Boss \u6216\u91ca\u653e\u672a\u89c1\u8fc7\u7684\u534e\u4e3d\u5927\u62db\u65f6，\u7ecf\u5e38\u4f1a\u9047\u5230\u753b\u9762\u77ac\u95f4\u201c\u51bb\u7ed3\u201d0.1 ~ 0.5 \u79d2（\u4fd7\u79f0\u8fdb\u56fe\u5361\u987f\u6216\u9996\u6b21\u65bd\u6cd5\u6389\u5e27）\u3002\u5728 Profiler \u4e2d\u6293\u53d6 Trace，\u8fd9\u7c7b\u957f\u5e27\u7684\u7f6a\u9b41\u7978\u9996\u51e0\u4e4e 100% \u5bf9\u5e94\u7740 Gfx.CreateGPUProgram\u3001Shader.CreateGPU<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[66,183,50,1248,51],"topic":[],"class_list":["post-110292","post","type-post","status-publish","format-standard","hentry","category-server","tag-ai","tag-unity","tag-50","tag-1248","tag-51"],"yoast_head":"\nShader \u7f16\u8bd1\u8017\u65f6\u4e0e\u8fd0\u884c\u65f6\u53d8\u4f53\u9884\u70ed\u6d41\u6c34\u7ebf\uff1a\u6d88\u9664\u8fdb\u56fe\u5361\u987f - 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