public static Texture2D Render(GameObject prefab)
{
if (prefab == null)
{
return(null);
}
if (prefab.GetComponent <Renderer>() == null)
{
return(null);
}
EditorUtility.SetTemporarilyAllowIndieRenderTexture(true);
Texture2D texture2D = new Texture2D(64, 64);
texture2D.hideFlags = HideFlags.HideAndDontSave;
texture2D.name = "Preview Texture";
RenderTexture temporary = RenderTexture.GetTemporary(texture2D.width, texture2D.height);
GameObject gameObject = new GameObject("Preview");
gameObject.hideFlags = HideFlags.HideAndDontSave;
Camera camera = gameObject.AddComponent(typeof(Camera)) as Camera;
camera.clearFlags = CameraClearFlags.Color;
camera.backgroundColor = new Color(0.5f, 0.5f, 0.5f, 0f);
camera.cullingMask = 0;
camera.enabled = false;
camera.targetTexture = temporary;
Light light = gameObject.AddComponent(typeof(Light)) as Light;
light.type = LightType.Directional;
Bounds bounds = RenderThumbnailUtility.CalculateVisibleBounds(prefab);
Vector3 vector = new Vector3(0.7f, 0.3f, 0.7f);
float num = bounds.extents.magnitude * 1.6f;
gameObject.transform.position = bounds.center + vector.normalized * num;
gameObject.transform.LookAt(bounds.center);
camera.nearClipPlane = num * 0.1f;
camera.farClipPlane = num * 2.2f;
Camera current = Camera.current;
camera.RenderDontRestore();
Light[] lights = new Light[]
{
light
};
Graphics.SetupVertexLights(lights);
Component[] componentsInChildren = prefab.GetComponentsInChildren(typeof(Renderer));
Component[] array = componentsInChildren;
for (int i = 0; i < array.Length; i++)
{
Renderer renderer = (Renderer)array[i];
if (renderer.enabled)
{
Material[] sharedMaterials = renderer.sharedMaterials;
for (int j = 0; j < sharedMaterials.Length; j++)
{
if (!(sharedMaterials[j] == null))
{
Material material = sharedMaterials[j];
string dependency = ShaderUtil.GetDependency(material.shader, "BillboardShader");
if (dependency != null && dependency != string.Empty)
{
material = UnityEngine.Object.Instantiate <Material>(material);
material.shader = Shader.Find(dependency);
material.hideFlags = HideFlags.HideAndDontSave;
}
for (int k = 0; k < material.passCount; k++)
{
if (material.SetPass(k))
{
renderer.RenderNow(j);
}
}
if (material != sharedMaterials[j])
{
UnityEngine.Object.DestroyImmediate(material);
}
}
}
}
}
texture2D.ReadPixels(new Rect(0f, 0f, (float)texture2D.width, (float)texture2D.height), 0, 0);
RenderTexture.ReleaseTemporary(temporary);
UnityEngine.Object.DestroyImmediate(gameObject);
Camera.SetupCurrent(current);
EditorUtility.SetTemporarilyAllowIndieRenderTexture(false);
return(texture2D);
}
