How to increase GL_MAX_TEXTURE_SIZE from 8192 to 16384 ?

[wbzqe]

# apk add mesa-demos
# glxinfo | grep OpenGL
OpenGL vendor string: VMware, Inc.
OpenGL renderer string: llvmpipe (LLVM 10.0.0, 256 bits)
OpenGL core profile version string: 3.3 (Core Profile) Mesa 20.0.6 (git-4c59d9944a)
OpenGL core profile shading language version string: 3.30
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.1 Mesa 20.0.6 (git-4c59d9944a)
OpenGL shading language version string: 1.40
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.1 Mesa 20.0.6 (git-4c59d9944a)
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.10
OpenGL ES profile extensions:
# glxinfo -l | grep MAX_TEXTURE_SIZE
    GL_MAX_TEXTURE_SIZE = 8192
    GL_MAX_TEXTURE_SIZE = 8192

same issues at stackoverflow