swrast + GLES2

Hi,
I want to use swrast and enable GLES2. I am using the newest Mesa
sources and compile using :
        --prefix=/usr \
        --disable-static --enable-shared --with-pic \
        --disable-selinux --disable-dri3 \
        --enable-gles2 \
        --enable-egl \
        --with-gallium-drivers=swrast \
        --enable-gallium-osmesa \
        --with-dri-drivers=swrast \
        --enable-debug

When I run the Mesa example code es2tri I just see grey screen. After
debugging I've discovered that glCreateShader fails, because inside of
some dispatcher that function is translated into _mesa_nop.

Have I misconfigured/miscompiled something, or that what I am trying to
achieve is not possible?


Best Regards,
Michal Pachucki