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Unity Engine

MultiTexCoord3(int, float, float, float)

Sets current texture coordinate (x,y,z) to the actual texture unit.
Read time 1 minuteLast updated 6 days ago

Definition

  • Type: Method
  • Namespace: UnityEngine
  • Assembly: UnityEngine.CoreModule
public static void MultiTexCoord3(int unit, float x, float y, float z)

Parameters

unit

int

x

float

y

float

z

float

Remarks

In OpenGL this matches 
glMultiTexCoord
for the given texture unit if 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.

Examples

using UnityEngine;public class Example : MonoBehaviour{    // Changes between two textures assigned to a material    // When pressed space    Material mat;    bool flagTex = true;    void Update()    {        if (Input.GetKeyDown(KeyCode.Space))        {            if (flagTex)            {                flagTex = false;            }            else            {                flagTex = true;            }        }    }    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);        if (flagTex)        {            GL.MultiTexCoord3(0, 0, 0, 0); // main texture        }        else        {            GL.MultiTexCoord3(1, 0, 0, 0); // second texture        }        GL.Vertex3(0.25f, 0.25f, 0);        if (flagTex)        {            GL.MultiTexCoord3(0, 0, 1, 0);        }        else        {            GL.MultiTexCoord3(1, 0, 1, 0);        }        GL.Vertex3(0.25f, 0.75f, 0);        if (flagTex)        {            GL.MultiTexCoord3(0, 1, 1, 0);        }        else        {            GL.MultiTexCoord3(1, 1, 1, 0);        }        GL.Vertex3(0.75f, 0.75f, 0);        if (flagTex)        {            GL.MultiTexCoord3(0, 1, 0, 0);        }        else        {            GL.MultiTexCoord3(1, 1, 0, 0);        }        GL.Vertex3(0.75f, 0.25f, 0);        GL.End();        GL.PopMatrix();    }}