x11 Disable patent-encumbered ARB_texture_float, EXT_texture_shared_exponent, and EXT_packed_float extensions. Build drivers based on the classic architecture. Enable EGL support. Build drivers based on Gallium3D, the new architecture for 3D graphics drivers. Enable video decode acceleration support for Gallium3D. Enable the Graphics Buffer Manager for EGL on KMS. Enable GLES (both v1 and v2) support. Enable GLESv1 support. Enable GLESv2 support. Enable LLVM backend for Gallium3D. Enable the Clover Gallium OpenCL state tracker. Enable the OpenVG 2D acceleration API for Gallium3D. Build the Mesa library for off-screen rendering. Enable if the user plans to run the package under a pax enabled hardened kernel disable optimized assembly code that is not PIC friendly Build the LLVM based r600 shader compiler. Enable sharing of common code for classic DRI drivers. Enable sharing of common code for the OpenGL API. Enable the VDPAU acceleration interface for the Gallium3D Video Layer. Enable support for dev-libs/wayland Enable the XA (X Acceleration) API for Gallium3D. Enable the Xorg state tracker for Gallium3D. This is not required for OpenGL acceleration in X. Enable the XvMC acceleration interface for the Gallium3D Video Layer.