using System; using System.Collections; using System.IO; using System.Linq; using NUnit.Framework; using UnityEngine; using UnityEditor.SceneManagement; using Object = UnityEngine.Object; using UnityEngine.Experimental.Rendering; using UnityEngine.TestTools; namespace UnityEditor.Experimental.Rendering { public class GraphicsTests { // path where the tests live private static readonly string[] s_Path = { "GraphicsTests", "RenderPipeline" }; private static readonly string[] s_PipelinePath = { "LightweightPipeline", "HDRenderPipeline", }; // info that gets generated for use // in a dod way public struct TestInfo { public string name; public float threshold; public string relativePath; public int frameWait; public override string ToString() { return name; } } // collect the scenes that we can use public static class CollectScenes { public static IEnumerable scenes { get { var absoluteScenesPath = s_Path.Aggregate(Application.dataPath, Path.Combine); foreach (var pipelinePath in s_PipelinePath) { var filesPath = Path.Combine(absoluteScenesPath, pipelinePath); // find all the scenes var allPaths = System.IO.Directory.GetFiles(filesPath, "*.unity", System.IO.SearchOption.AllDirectories); // construct all the needed test infos foreach (var path in allPaths) { var p = new FileInfo(path); var split = s_Path.Aggregate("", Path.Combine); split = string.Format("{0}{1}", split, Path.DirectorySeparatorChar); var splitPaths = p.FullName.Split(new[] { split }, StringSplitOptions.RemoveEmptyEntries); yield return new TestInfo { name = p.Name, relativePath = splitPaths.Last(), threshold = 0.02f, frameWait = 100 }; } } } } } [TearDown] public void TearDown() { var testSetup = Object.FindObjectOfType(); if (testSetup == null) return; testSetup.TearDown(); } [UnityTest] public IEnumerator TestScene([ValueSource(typeof(CollectScenes), "scenes")]TestInfo testInfo) { var prjRelativeGraphsPath = s_Path.Aggregate("Assets", Path.Combine); var filePath = Path.Combine(prjRelativeGraphsPath, testInfo.relativePath); // open the scene EditorSceneManager.OpenScene(filePath); var testSetup = Object.FindObjectOfType (); Assert.IsNotNull(testSetup, "No SetupSceneForRenderPipelineTest in scene " + testInfo.name); Assert.IsNotNull(testSetup.cameraToUse, "No configured camera in "); testSetup.Setup(); for (int i = 0; i < testInfo.frameWait; ++i) { yield return null; } while (Lightmapping.isRunning) { yield return null; } var rtDesc = new RenderTextureDescriptor ( testSetup.width, testSetup.height, testSetup.hdr ? RenderTextureFormat.ARGBHalf : RenderTextureFormat.ARGB32, 24); rtDesc.sRGB = PlayerSettings.colorSpace == ColorSpace.Linear; // render the scene var tempTarget = RenderTexture.GetTemporary (rtDesc); var oldTarget = testSetup.cameraToUse.targetTexture; testSetup.cameraToUse.targetTexture = tempTarget; testSetup.cameraToUse.Render (); testSetup.cameraToUse.targetTexture = oldTarget; // Readback the rendered texture var oldActive = RenderTexture.active; RenderTexture.active = tempTarget; var captured = new Texture2D(tempTarget.width, tempTarget.height, TextureFormat.ARGB32, false); captured.ReadPixels(new Rect(0, 0, testSetup.width, testSetup.height), 0, 0); RenderTexture.active = oldActive; var rootPath = Directory.GetParent(Application.dataPath).ToString(); var templatePath = Path.Combine(rootPath.ToString(), "ImageTemplates"); // find the reference image var dumpFileLocation = Path.Combine(templatePath, string.Format("{0}.{1}", testInfo.relativePath, "png")); if (!File.Exists(dumpFileLocation)) { // no reference exists, create it var fileInfo = new FileInfo (dumpFileLocation); fileInfo.Directory.Create(); var generated = captured.EncodeToPNG(); File.WriteAllBytes(dumpFileLocation, generated); Assert.Fail("Template file not found for {0}, creating it at {1}.", testInfo.name, dumpFileLocation); } var template = File.ReadAllBytes(dumpFileLocation); var fromDisk = new Texture2D(2, 2); fromDisk.LoadImage(template, false); var areEqual = CompareTextures(fromDisk, captured, testInfo.threshold); if (!areEqual) { var failedPath = Path.Combine(rootPath.ToString(), "Failed"); Directory.CreateDirectory(failedPath); var misMatchLocationResult = Path.Combine(failedPath, string.Format("{0}.{1}", testInfo.name, "png")); var misMatchLocationTemplate = Path.Combine(failedPath, string.Format("{0}.template.{1}", testInfo.name, "png")); var generated = captured.EncodeToPNG(); File.WriteAllBytes(misMatchLocationResult, generated); File.WriteAllBytes(misMatchLocationTemplate, template); } Assert.IsTrue(areEqual, "Scene from {0}, did not match .template file.", testInfo.relativePath); } // compare textures, use RMS for this private bool CompareTextures(Texture2D fromDisk, Texture2D captured, float threshold) { if (fromDisk == null || captured == null) return false; if (fromDisk.width != captured.width || fromDisk.height != captured.height) return false; var pixels1 = fromDisk.GetPixels(); var pixels2 = captured.GetPixels(); if (pixels1.Length != pixels2.Length) return false; int numberOfPixels = pixels1.Length; float sumOfSquaredColorDistances = 0; for (int i = 0; i < numberOfPixels; i++) { Color p1 = pixels1[i]; Color p2 = pixels2[i]; Color diff = p1 - p2; diff = diff * diff; sumOfSquaredColorDistances += (diff.r + diff.g + diff.b) / 3.0f; } float rmse = Mathf.Sqrt(sumOfSquaredColorDistances / numberOfPixels); return rmse < threshold; } } }