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Unity Engine

SetPixels

Sets the pixel colors of an entire mipmap level of a face.
Read time 3 minutesLast updated 4 days ago

Definition

  • Type: Method
  • Namespace: UnityEngine
  • Assembly: UnityEngine.CoreModule

SetPixels(Color[], CubemapFace, int)

Sets the pixel colors of an entire mipmap level of a face.
public void SetPixels(Color[] colors, CubemapFace face, int miplevel)

Parameters

colors

Color[]
The array of pixel colours to use. This is a 2D image flattened to a 1D array.

face

CubemapFace
The CubemapFace to write 
colors
to.

miplevel

int
The mipmap level to write 
colors
to. The range is 
0
through the texture's Texture.mipmapCount. The default value is 
0
.

Remarks

This method sets pixel data for the texture in CPU memory. Texture.isReadable must be 
true
, and you must call Cubemap.Apply after 
SetPixels
to upload the changed pixels to the GPU.
Cubemap.Apply is an expensive operation because it copies all the pixels in the texture even if you've only changed some of the pixels, so change as many pixels as possible before you call it.
colors
must contain the pixels row by row, starting at the bottom left of the face texture. The size of the array must be the width × height of the mipmap level.
A single call to 
SetPixels
is usually faster than multiple calls to Cubemap.SetPixel, especially for large textures.
SetPixels
might be slower than some other texture methods because it converts the Color struct into the format the texture uses. To set pixel data more quickly, use Cubemap.SetPixelData instead.
You can use 
SetPixels
with the following texture formats:
  • Alpha8
  • ARGB32
  • ARGB4444
  • BGRA32
  • R16
  • R16_SIGNED
  • R8
  • R8_SIGNED
  • RFloat
  • RG16
  • RG16_SIGNED
  • RG32
  • RG32_SIGNED
  • RGB24
  • RGB24_SIGNED
  • RGB48
  • RGB48_SIGNED
  • RGB565
  • RGB9e5Float
  • RGBA32
  • RGBA32_SIGNED
  • RGBA4444
  • RGBA64
  • RGBA64_SIGNED
  • RGBAFloat
  • RGBAHalf
  • RGFloat
  • RGHalf
  • RHalf
For all other formats, 
SetPixels
fails. Unity throws an exception when 
SetPixels
fails.
Additional Resources: Cubemap.GetPixels, Cubemap.SetPixelData, Cubemap.Apply, mipmapCount.

Examples

// copy a texture to the +X face of a cubemapusing UnityEngine;using System.Collections;public class ExampleClass : MonoBehaviour{    public Cubemap c;    public Texture2D t;    private Color[] CubeMapColors;    void Example()    {        CubeMapColors = t.GetPixels();        c.SetPixels(CubeMapColors, CubemapFace.PositiveX);        c.Apply();    }}

SetPixels(Color[], CubemapFace)

Sets the pixel colors of an entire mipmap level of a face.
public void SetPixels(Color[] colors, CubemapFace face)

Parameters

colors

Color[]
The array of pixel colours to use. This is a 2D image flattened to a 1D array.

face

CubemapFace
The CubemapFace to write 
colors
to.

Remarks

This method sets pixel data for the texture in CPU memory. Texture.isReadable must be 
true
, and you must call Cubemap.Apply after 
SetPixels
to upload the changed pixels to the GPU.
Cubemap.Apply is an expensive operation because it copies all the pixels in the texture even if you've only changed some of the pixels, so change as many pixels as possible before you call it.
colors
must contain the pixels row by row, starting at the bottom left of the face texture. The size of the array must be the width × height of the mipmap level.
A single call to 
SetPixels
is usually faster than multiple calls to Cubemap.SetPixel, especially for large textures.
SetPixels
might be slower than some other texture methods because it converts the Color struct into the format the texture uses. To set pixel data more quickly, use Cubemap.SetPixelData instead.
You can use 
SetPixels
with the following texture formats:
  • Alpha8
  • ARGB32
  • ARGB4444
  • BGRA32
  • R16
  • R16_SIGNED
  • R8
  • R8_SIGNED
  • RFloat
  • RG16
  • RG16_SIGNED
  • RG32
  • RG32_SIGNED
  • RGB24
  • RGB24_SIGNED
  • RGB48
  • RGB48_SIGNED
  • RGB565
  • RGB9e5Float
  • RGBA32
  • RGBA32_SIGNED
  • RGBA4444
  • RGBA64
  • RGBA64_SIGNED
  • RGBAFloat
  • RGBAHalf
  • RGFloat
  • RGHalf
  • RHalf
For all other formats, 
SetPixels
fails. Unity throws an exception when 
SetPixels
fails.
Additional Resources: Cubemap.GetPixels, Cubemap.SetPixelData, Cubemap.Apply, mipmapCount.

Examples

// copy a texture to the +X face of a cubemapusing UnityEngine;using System.Collections;public class ExampleClass : MonoBehaviour{    public Cubemap c;    public Texture2D t;    private Color[] CubeMapColors;    void Example()    {        CubeMapColors = t.GetPixels();        c.SetPixels(CubeMapColors, CubemapFace.PositiveX);        c.Apply();    }}