How to change texture of 3d model at runtime

[Somendra121]

Please let us know how to change texture of 3d model at runtime, in sceneform we use this code to change texture at runtime :

` public void LoadTexture(Context context, Bitmap colorImageBitmap) {
Log.d("LoadTexture", "LoadTexture : @@@@@@@1 renderableInstance.size() : " + renderableInstances.size());
for (RenderableInstance renderableInstance : renderableInstances) {
Texture.builder()
.setSource(colorImageBitmap)
.setSampler(
Texture.Sampler.builder()
.setWrapMode(Texture.Sampler.WrapMode.REPEAT)
.build()
)
.build()
.thenAccept(texture -> {
MaterialFactory.makeOpaqueWithTexture(context, texture)
.thenAccept(material -> {
material.setFloat("roughness", 0.5f); // Set roughness
material.setFloat("ao", 1.0f); // Set AO
Log.d("LoadTexture", "LoadTexture :@@@@@@2 renderableInstance.getMaterialsCount() : " + renderableInstance.getMaterialsCount());

                                renderableInstance.setMaterial(0, material);
                            });
                });
        Log.d("LoadTexture", "LoadTexture @@@@@@@3 : renderableInstance.getEntity() : " + renderableInstance.getEntity());
    }
}`

[EvergreenTree97]

I solved it as follows

private fun createTextureFromBitmap(engine: Engine, bitmap: Bitmap): Texture {
    val texture = Texture.Builder()
        .width(bitmap.width)
        .height(bitmap.height)
        .levels(1)
        .sampler(Texture.Sampler.SAMPLER_2D)
        .format(Texture.InternalFormat.SRGB8_A8)
        .build(engine)

    val buffer = ByteBuffer.allocateDirect(bitmap.byteCount)
    bitmap.copyPixelsToBuffer(buffer)
    buffer.flip()
    texture.setImage(
        engine, 0, Texture.PixelBufferDescriptor(
            buffer,
            Texture.Format.RGBA,
            Texture.Type.UBYTE
        )
    )
    buffer.clear()
    return texture
}

texture = createTextureFromBitmap(engine, bitmap)
(modelNodes[0] as ModelNode).materialInstances[0][0] = setBaseColorMap(texture)