GL.TRIANGLES

Description

Mode for Begin: draw triangles.

Draws triangles using each set of 3 vertices passed. If you pass 3 vertices, one triangle is drawn, where each vertex becomes one corner of the triangle. If you pass 6 vertices, 2 triangles will be drawn.

To set up the screen for drawing in 2D, use GL.LoadOrtho or GL.LoadPixelMatrix. To set up the screen for drawing in 3D, use GL.LoadIdentity followed by GL.MultMatrix with the desired transformation matrix.

See Also: GL.Begin, GL.End.

    // Draws a triangle that covers the middle of the screen
    var mat : Material;

    function OnPostRender() {
        if (!mat) {
            Debug.LogError("Please Assign a material on the inspector");
            return;
        }
        GL.PushMatrix();
        mat.SetPass(0);
        GL.LoadOrtho();
        GL.Begin(GL.TRIANGLES);
        GL.Vertex3(0,0,0);
        GL.Vertex3(1,1,0);
        GL.Vertex3(0,1,0);
        GL.End();
        GL.PopMatrix();
    }

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    public Material mat;
    void OnPostRender() {
        if (!mat) {
            Debug.LogError("Please Assign a material on the inspector");
            return;
        }
        GL.PushMatrix();
        mat.SetPass(0);
        GL.LoadOrtho();
        GL.Begin(GL.TRIANGLES);
        GL.Vertex3(0, 0, 0);
        GL.Vertex3(1, 1, 0);
        GL.Vertex3(0, 1, 0);
        GL.End();
        GL.PopMatrix();
    }
}