Graphics.DrawMeshInstanced

Draw the same mesh multiple times using GPU instancing.

可以免去创建和管理gameObj的开销

并不是立即绘制,如需:Graphics.DrawMeshNow

每帧调用一次,当帧发送绘制请求

Meshes are not further culled by the view frustum or baked occluders, nor sorted for transparency or z efficiency.

You can only draw a maximum of 1023 instances at once

SE 3.0 以上支持

材质要勾上 enableInstancing 总的检查:material.enableInstancing && SystemInfo.supportsInstancing

过程中遇到的问题:

导入mesh,的Use File Scale 勾上就不显示??? 模型的缩放调整有问题,去掉后原本的模型直接放显得特别大

感觉像是这个函数强行用了一次file scale,再用会变得更小(函数自身*导入参数)

去掉设置,这个函数的变正常,但直接拖到游戏就不对,应该是个bug

public class GpuInstancingTest : MonoBehaviour {

	public Mesh mesh;

	public Material material;

	List<Matrix4x4> matrices = new List<Matrix4x4>();

	void Start()

	{

		if (!material.enableInstancing || !SystemInfo.supportsInstancing)

		{

			enabled = false;

			return;

		}

		for (int i = 0; i < 10; ++i)

		{

			Matrix4x4 mt = Matrix4x4.TRS(transform.position + (i * 1.1f) * Vector3.up, transform.rotation, Vector3.one);

			matrices.Add(mt);

		}

	}

	// Update is called once per frame

	void Update () {

		Graphics.DrawMeshInstanced(mesh, 0, material, matrices);

	}

}

public class GpuInstancingTest : MonoBehaviour {

    public Mesh mesh;

    public Material material;

    List<Matrix4x4> matrices = new List<Matrix4x4>();

    void Start()

        if (!material.enableInstancing || !SystemInfo.supportsInstancing)

            enabled = false;

            return;

        for (int i = 0; i < 10; ++i)

            Matrix4x4 mt = Matrix4x4.TRS(transform.position + (i * 1.1f) * Vector3.up, transform.rotation, Vector3.one);

            matrices.Add(mt);

    // Update is called once per frame

    void Update () {

        Graphics.DrawMeshInstanced(mesh, 0, material, matrices);

巴特西

Graphics.DrawMeshInstanced

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