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170 行
5.9 KiB
170 行
5.9 KiB
using UnityEditorInternal;
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using UnityEngine;
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using UnityEngine.MaterialGraph;
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namespace UnityEditor.MaterialGraph.Drawing
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{
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internal class MaterialGraphPreviewGenerator
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{
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private PreviewRenderUtility m_PreviewUtility;
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private static readonly Mesh[] s_Meshes = {null, null, null, null, null};
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private static Mesh s_PlaneMesh;
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private static readonly GUIContent[] s_MeshIcons = {null, null, null, null, null};
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private static readonly GUIContent[] s_LightIcons = {null, null};
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private static readonly GUIContent[] s_TimeIcons = {null, null};
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private PreviewRenderUtility utility
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{
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get
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{
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if (m_PreviewUtility == null)
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m_PreviewUtility = new PreviewRenderUtility();
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return m_PreviewUtility;
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}
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}
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public void Reset()
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{
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if (m_PreviewUtility != null)
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m_PreviewUtility.Cleanup();
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m_PreviewUtility = null;
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}
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public MaterialGraphPreviewGenerator()
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{
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EditorUtility.SetCameraAnimateMaterials(utility.m_Camera, true);
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if (s_Meshes[0] == null)
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{
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var handleGo = (GameObject)EditorGUIUtility.LoadRequired("Previews/PreviewMaterials.fbx");
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// @TODO: temp workaround to make it not render in the scene
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handleGo.SetActive(false);
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foreach (Transform t in handleGo.transform)
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{
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var meshFilter = t.GetComponent<MeshFilter>();
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switch (t.name)
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{
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case "sphere":
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s_Meshes[0] = meshFilter.sharedMesh;
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break;
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case "cube":
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s_Meshes[1] = meshFilter.sharedMesh;
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break;
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case "cylinder":
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s_Meshes[2] = meshFilter.sharedMesh;
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break;
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case "torus":
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s_Meshes[3] = meshFilter.sharedMesh;
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break;
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default:
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Debug.Log("Something is wrong, weird object found: " + t.name);
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break;
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}
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}
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s_MeshIcons[0] = EditorGUIUtility.IconContent("PreMatSphere");
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s_MeshIcons[1] = EditorGUIUtility.IconContent("PreMatCube");
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s_MeshIcons[2] = EditorGUIUtility.IconContent("PreMatCylinder");
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s_MeshIcons[3] = EditorGUIUtility.IconContent("PreMatTorus");
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s_MeshIcons[4] = EditorGUIUtility.IconContent("PreMatQuad");
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s_LightIcons[0] = EditorGUIUtility.IconContent("PreMatLight0");
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s_LightIcons[1] = EditorGUIUtility.IconContent("PreMatLight1");
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s_TimeIcons[0] = EditorGUIUtility.IconContent("PlayButton");
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s_TimeIcons[1] = EditorGUIUtility.IconContent("PauseButton");
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Mesh quadMesh = Resources.GetBuiltinResource(typeof(Mesh), "Quad.fbx") as Mesh;
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s_Meshes[4] = quadMesh;
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s_PlaneMesh = quadMesh;
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}
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}
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public Texture DoRenderPreview(Material mat, PreviewMode mode, Rect size)
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{
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return DoRenderPreview(mat, mode, size, Time.realtimeSinceStartup);
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}
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static Mesh s_Quad;
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public static Mesh quad
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{
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get
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{
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if (s_Quad != null)
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return s_Quad;
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var vertices = new[]
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{
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new Vector3(-1f, -1f, 0f),
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new Vector3(1f, 1f, 0f),
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new Vector3(1f, -1f, 0f),
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new Vector3(-1f, 1f, 0f)
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};
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var uvs = new[]
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{
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new Vector2(0f, 0f),
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new Vector2(1f, 1f),
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new Vector2(1f, 0f),
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new Vector2(0f, 1f)
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};
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var indices = new[] { 0, 1, 2, 1, 0, 3 };
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s_Quad = new Mesh
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{
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vertices = vertices,
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uv = uvs,
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triangles = indices
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};
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s_Quad.RecalculateNormals();
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s_Quad.RecalculateBounds();
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return s_Quad;
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}
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}
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public Texture DoRenderPreview(Material mat, PreviewMode mode, Rect size, float time)
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{
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if (mat == null || mat.shader == null)
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return Texture2D.blackTexture;
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utility.BeginPreview(size, GUIStyle.none);
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if (mode == PreviewMode.Preview3D)
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{
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utility.m_Camera.transform.position = -Vector3.forward * 5;
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utility.m_Camera.transform.rotation = Quaternion.identity;
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}
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else
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{
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utility.m_Camera.projectionMatrix = Matrix4x4.identity;
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}
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EditorUtility.SetCameraAnimateMaterialsTime(utility.m_Camera, time);
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utility.m_Light[0].intensity = 1.0f;
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utility.m_Light[0].transform.rotation = Quaternion.Euler(50f, 50f, 0);
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utility.m_Light[1].intensity = 1.0f;
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InternalEditorUtility.SetCustomLighting(utility.m_Light, Color.black);
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var oldFog = RenderSettings.fog;
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Unsupported.SetRenderSettingsUseFogNoDirty(false);
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utility.m_Camera.clearFlags = CameraClearFlags.Depth;
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utility.DrawMesh(
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mode == PreviewMode.Preview3D ? s_Meshes[0] : quad,
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Vector3.zero,
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Quaternion.identity,
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mat,
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0);
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utility.m_Camera.Render();
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Unsupported.SetRenderSettingsUseFogNoDirty(oldFog);
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InternalEditorUtility.RemoveCustomLighting();
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return utility.EndPreview();
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}
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}
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}
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