94 lines
4.3 KiB
C#
94 lines
4.3 KiB
C#
#if UNITY_EDITOR
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using System.IO;
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using System.Linq;
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using UnityEditor;
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using UnityEditor.SceneManagement;
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using UnityEngine;
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using UnityEngine.SceneManagement;
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/// <summary>Temporarily force Ground to visualize bakedGI only, to verify lightmap sampling.</summary>
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public static class DiagnoseHomeCampGiViz
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{
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const string ScenePath = "Assets/Bundles/Scenes/Town/HomeCamp/HomeCamp.unity";
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const string Review = "D:/UD/AI/AIGame/Tools/output/homecamp_review";
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const string ShaderPath = "Assets/Bundles/Shaders/XShader/XTerrain.shader";
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public static string Run()
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{
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Directory.CreateDirectory(Review);
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var scene = EditorSceneManager.OpenScene(ScenePath, OpenSceneMode.Single);
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var root = scene.GetRootGameObjects().Single(g => g.name == "HomeCamp");
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var ground = root.transform.Find("Ground")?.GetComponentInChildren<MeshRenderer>();
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if (!ground) return "FAIL: no ground";
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var mesh = ground.GetComponent<MeshFilter>()?.sharedMesh;
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var uv1 = mesh != null && mesh.uv2 != null && mesh.uv2.Length == mesh.vertexCount;
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var uv0 = mesh != null ? mesh.uv.Length : 0;
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// Inject a debug return of bakedGI into XTerrain fragment temporarily via material replacement:
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// use Unlit with lightmap — simpler: create temp material using URP/Lit which we know samples LM.
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var lit = new Material(Shader.Find("Universal Render Pipeline/Lit"));
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lit.SetColor("_BaseColor", Color.white);
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lit.SetFloat("_Smoothness", 0f);
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var prev = ground.sharedMaterial;
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ground.sharedMaterial = lit;
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var cam = root.GetComponentInChildren<Camera>();
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Capture(cam, Review + "/diag_ground_urp_lit.png");
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// Also capture original
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ground.sharedMaterial = prev;
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Capture(cam, Review + "/diag_ground_xterrain.png");
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// Sample lightmap at ground renderer scaleOffset a few UV points
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var lm = LightmapSettings.lightmaps[0].lightmapColor;
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var so = ground.lightmapScaleOffset;
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string Samples(string label, float u, float v)
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{
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// Unity UV: v=0 bottom. Texture2D GetPixel v from bottom if we use GetPixelBilinear with Unity convention...
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float uu = u * so.x + so.z;
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float vv = v * so.y + so.w;
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var rt = RenderTexture.GetTemporary(lm.width, lm.height, 0, RenderTextureFormat.ARGBFloat);
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Graphics.Blit(lm, rt);
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var prevRt = RenderTexture.active; RenderTexture.active = rt;
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var tex = new Texture2D(lm.width, lm.height, TextureFormat.RGBAFloat, false, true);
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tex.ReadPixels(new Rect(0, 0, lm.width, lm.height), 0, 0); tex.Apply();
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RenderTexture.active = prevRt; RenderTexture.ReleaseTemporary(rt);
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// Texture2D: (0,0) bottom-left in GetPixelBilinear? Actually GetPixelBilinear y=0 is bottom.
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var c = tex.GetPixelBilinear(uu, vv);
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Object.DestroyImmediate(tex);
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float l = c.r * .3f + c.g * .59f + c.b * .11f;
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return label + "=(" + uu.ToString("F2") + "," + vv.ToString("F2") + ")->" + l.ToString("F3");
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}
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Object.DestroyImmediate(lit);
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return "uv1=" + uv1 + " uv0Count=" + uv0 + " verts=" + (mesh ? mesh.vertexCount : 0)
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+ " idx=" + ground.lightmapIndex + " so=" + so
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+ " " + Samples("center", .5f, .5f)
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+ " " + Samples("near", .5f, .2f)
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+ " " + Samples("far", .5f, .8f)
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+ " " + Samples("left", .2f, .5f)
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+ " " + Samples("right", .8f, .5f);
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}
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static void Capture(Camera camera, string file)
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{
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var rt = RenderTexture.GetTemporary(720, 1280, 24, RenderTextureFormat.ARGB32);
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var old = RenderTexture.active; var oldT = camera.targetTexture; var oldA = camera.aspect;
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var tex = new Texture2D(720, 1280, TextureFormat.RGB24, false);
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try
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{
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camera.aspect = 720f / 1280f; camera.targetTexture = rt; RenderTexture.active = rt;
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camera.Render();
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tex.ReadPixels(new Rect(0, 0, 720, 1280), 0, 0); tex.Apply();
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File.WriteAllBytes(file, tex.EncodeToPNG());
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}
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finally
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{
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camera.targetTexture = oldT; camera.aspect = oldA; RenderTexture.active = old;
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RenderTexture.ReleaseTemporary(rt); Object.DestroyImmediate(tex);
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}
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}
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}
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#endif
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