GL.TexCoord

Description

Sets current texture coordinate (v.x,v.y,v.z) for all texture units.

In OpenGL this matches glMultiTexCoord for all texture units or glTexCoord when no multi-texturing is available. On other graphics APIs the same functionality is emulated.

The Z component is used only when:
1. You access a cubemap (which you access with a vector coordinate, hence x,y & z).
2. You do "projective texturing", where the X & Y coordinates are divided by Z to get the final coordinate. This would be mostly useful for water reflections and similar things.

This function can only be called between GL.Begin and GL.End functions.

    // Draws a Quad in the middle of the screen and
    // Adds the material's Texture to it.

    var mat : Material;
    function OnPostRender() {
        if (!mat) {
            Debug.LogError("Please Assign a material on the inspector");
            return;
        }
        GL.PushMatrix();
        mat.SetPass(1);
        GL.Color(Color(1,1,1,1));
        GL.LoadOrtho();
        GL.Begin(GL.QUADS);
        GL.TexCoord(Vector3(0,0,0));
        GL.Vertex3(0.25,0.25,0);
        GL.TexCoord(Vector3(0,1,0));
        GL.Vertex3(0.25,0.75,0);
        GL.TexCoord(Vector3(1,1,0));
        GL.Vertex3(0.75,0.75,0);
        GL.TexCoord(Vector3(1,0,0));
        GL.Vertex3(0.75,0.25,0);
        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(1);
        GL.Color(new Color(1, 1, 1, 1));
        GL.LoadOrtho();
        GL.Begin(GL.QUADS);
        GL.TexCoord(new Vector3(0, 0, 0));
        GL.Vertex3(0.25F, 0.25F, 0);
        GL.TexCoord(new Vector3(0, 1, 0));
        GL.Vertex3(0.25F, 0.75F, 0);
        GL.TexCoord(new Vector3(1, 1, 0));
        GL.Vertex3(0.75F, 0.75F, 0);
        GL.TexCoord(new Vector3(1, 0, 0));
        GL.Vertex3(0.75F, 0.25F, 0);
        GL.End();
        GL.PopMatrix();
    }
}