With the CSS Texture specification. There are new properties coming.

This property will allow coloring text using a gradient or any texture.

@texture awesometexture {
    background-image: linear-gradient(red, blue);
    filter: blur(5px);
}
p {
    font-fill: texture(awesometexture);
}

This property will allow using a texture as background.

background-texture: texture([texture-name])

background: color position/size repeat origin clip attachment image|texture|initial|inherit;

p {
    background-image: linear-gradient(red, blue); /* fallback */
    background-texture: texture(awesometexture); /* Using CSS Textures */
}