OpenGL:Textures

public float[] toFloatArray()
{
    float[] colors = new float[(width*height)*4];

    int i = 0;
    for(int y = 0; y < height; ++y){
        for(int x = 0; x < width; ++x){

            colors[i] = (( r[x][y] * 1.0f) / 255);
            colors[i+1] = (( g[x][y] * 1.0f) / 255);
            colors[i+2] = (( b[x][y] * 1.0f) / 255);
            colors[i+3] = (( a[x][y] * 1.0f) / 255);

            i += 4;
        }
    }
    return colors;
}

...

glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_FLOAT, toFloatArray());