Question

JavaScript => public static function TexCoord3(x: float, y: float, z: float): void;
C# => public static void TexCoord3(float x, float y, float z);

Description 描述

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

设置纹理(x,y,z)坐标对于所有的纹理单元。

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.

这个函数和OpenGL中的glMultiTexCoord（多重纹理），glTexCoord函数一样。其它的图形API也有对应的功能。

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.

Z坐标用在以下情况：

1. 六面体纹理。
2. 投影纹理。Z有X，Y坐标得到。例如水面倒射效果。

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

这个函数只能在GL.Begin 和GL.End 之间使用。

JavaScript:

	// 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.LoadOrtho();
		GL.Begin(GL.QUADS);
		GL.TexCoord3(0,0,0);
		GL.Vertex3(0.25,0.25,0);
		GL.TexCoord3(0,1,0);
		GL.Vertex3(0.25,0.75,0);
		GL.TexCoord3(1,1,0);
		GL.Vertex3(0.75,0.75,0);
		GL.TexCoord3(1,0,0);
		GL.Vertex3(0.75,0.25,0);
		GL.End();
		GL.PopMatrix();
	}

C#:

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.LoadOrtho();
        GL.Begin(GL.QUADS);
        GL.TexCoord3(0, 0, 0);
        GL.Vertex3(0.25F, 0.25F, 0);
        GL.TexCoord3(0, 1, 0);
        GL.Vertex3(0.25F, 0.75F, 0);
        GL.TexCoord3(1, 1, 0);
        GL.Vertex3(0.75F, 0.75F, 0);
        GL.TexCoord3(1, 0, 0);
        GL.Vertex3(0.75F, 0.25F, 0);
        GL.End();
        GL.PopMatrix();
    }
}

GL