Texture2D.LoadRawTextureData

Parameters

Description

Fills texture pixels with raw preformatted data.

This function fills texture pixel memory with raw data. This is mostly useful for loading compressed texture format data into a texture.

Passed data should be of required size to fill the whole texture according to its width, height, data format and mipmapCount; otherwise a UnityException is thrown. Mipmaps are laid out in memory starting from largest, with smaller mip level data immediately following. For example, a 16x8 texture of RGBA32 format with no mipmaps can be filled with a 512-byte array (16x8x4).

For runtime texture generation, it is also possible to directly write into texture data via GetRawTextureData that returns a Unity.Collections.NativeArray. This can be faster since it avoids a memory copy that LoadRawTextureData would do.

Call Apply after setting image data to actually upload it to the GPU.

See Also: SetPixels, SetPixels32, LoadImage, Apply, GetRawTextureData.

using UnityEngine;

public class ExampleScript : MonoBehaviour
{
    public void Start()
    {
        // Create a 16x16 texture with PVRTC RGBA4 format
        // and fill it with raw PVRTC bytes.
        Texture2D tex = new Texture2D(16, 16, TextureFormat.PVRTC_RGBA4, false);
        // Raw PVRTC4 data for a 16x16 texture. This format is four bits
        // per pixel, so data should be 16*16/2=128 bytes in size.
        // Texture that is encoded here is mostly green with some angular
        // blue and red lines.
        byte[] pvrtcBytes = new byte[] {
            0x30, 0x32, 0x32, 0x32, 0xe7, 0x30, 0xaa, 0x7f, 0x32, 0x32, 0x32, 0x32, 0xf9, 0x40, 0xbc, 0x7f,
            0x03, 0x03, 0x03, 0x03, 0xf6, 0x30, 0x02, 0x05, 0x03, 0x03, 0x03, 0x03, 0xf4, 0x30, 0x03, 0x06,
            0x32, 0x32, 0x32, 0x32, 0xf7, 0x40, 0xaa, 0x7f, 0x32, 0xf2, 0x02, 0xa8, 0xe7, 0x30, 0xff, 0xff,
            0x03, 0x03, 0x03, 0xff, 0xe6, 0x40, 0x00, 0x0f, 0x00, 0xff, 0x00, 0xaa, 0xe9, 0x40, 0x9f, 0xff,
            0x5b, 0x03, 0x03, 0x03, 0xca, 0x6a, 0x0f, 0x30, 0x03, 0x03, 0x03, 0xff, 0xca, 0x68, 0x0f, 0x30,
            0xaa, 0x94, 0x90, 0x40, 0xba, 0x5b, 0xaf, 0x68, 0x40, 0x00, 0x00, 0xff, 0xca, 0x58, 0x0f, 0x20,
            0x00, 0x00, 0x00, 0xff, 0xe6, 0x40, 0x01, 0x2c, 0x00, 0xff, 0x00, 0xaa, 0xdb, 0x41, 0xff, 0xff,
            0x00, 0x00, 0x00, 0xff, 0xe8, 0x40, 0x01, 0x1c, 0x00, 0xff, 0x00, 0xaa, 0xbb, 0x40, 0xff, 0xff,
        };
        // Load data into the texture and upload it to the GPU.
        tex.LoadRawTextureData(pvrtcBytes);
        tex.Apply();
        // Assign texture to renderer's material.
        GetComponent<Renderer>().material.mainTexture = tex;
    }
}