设置渲染视口。
所有渲染均被约束在传入的 pixelRect
内。
如果修改了视口,则在其内部渲染的所有内容都会被拉伸。
using UnityEngine;
public class Example : MonoBehaviour { // Draw a red Quad that covers all the view port, and the when space is pressed // the viewport gets expanded to the whole screen and stretch the contents inside Material mat; bool stretch = false;
void Update() { if (Input.GetKeyDown(KeyCode.Space)) { if (stretch) { stretch = false; } else { stretch = true; } } }
void OnPostRender() { if (!mat) { Debug.LogError("Please Assign a material on the inspector"); return; } GL.PushMatrix(); mat.SetPass(0); GL.LoadPixelMatrix(); if (stretch) { GL.Viewport(new Rect(0, 0, Screen.width, Screen.height)); } else { GL.Viewport(new Rect(0, 0, Screen.width / 2, Screen.height)); } GL.Color(Color.red); GL.Begin(GL.QUADS); GL.Vertex3(0, 0, 0); GL.Vertex3(0, Screen.height, 0); GL.Vertex3(Screen.width, Screen.height, 0); GL.Vertex3(Screen.width, 0, 0); GL.Color(Color.yellow); GL.End(); GL.Begin(GL.TRIANGLES); GL.Vertex3(Screen.width / 2, Screen.height / 4, 1); GL.Vertex3(Screen.width / 4, Screen.height / 2, 1); GL.Vertex3(Screen.width - Screen.width / 4, Screen.height / 2, 1); GL.End(); GL.PopMatrix(); } }
Did you find this page useful? Please give it a rating:
Thanks for rating this page!
What kind of problem would you like to report?
Thanks for letting us know! This page has been marked for review based on your feedback.
If you have time, you can provide more information to help us fix the problem faster.
Provide more information
You've told us this page needs code samples. If you'd like to help us further, you could provide a code sample, or tell us about what kind of code sample you'd like to see:
You've told us there are code samples on this page which don't work. If you know how to fix it, or have something better we could use instead, please let us know:
You've told us there is information missing from this page. Please tell us more about what's missing:
You've told us there is incorrect information on this page. If you know what we should change to make it correct, please tell us:
You've told us this page has unclear or confusing information. Please tell us more about what you found unclear or confusing, or let us know how we could make it clearer:
You've told us there is a spelling or grammar error on this page. Please tell us what's wrong:
You've told us this page has a problem. Please tell us more about what's wrong:
Thank you for helping to make the Unity documentation better!
Your feedback has been submitted as a ticket for our documentation team to review.
We are not able to reply to every ticket submitted.