src/gallium/drivers/llvmpipe/README

   1 LLVMPIPE -- a fork of softpipe that employs LLVM for code generation.
   2
   3
   4 Requirements
   5 ============
   6
   7  - Linux
   8
   9  - LLVM. On Debian based distributions do:
  10
  11      aptitude install llvm-dev
  12
  13  - A x86 or amd64 processor with support for sse2, sse3, and sse4.1 SIMD
  14    instructions. This is necessary because we emit several SSE intrinsics for
  15    convenience. See /proc/cpuinfo to know what your CPU supports.
  16
  17  - scons (although it should be straightforward to fix the Makefiles as well)
  18
  19
  20 Building
  21 ========
  22
  23 To build everything invoke scons as:
  24
  25   scons debug=yes statetrackers=mesa drivers=llvmpipe winsys=xlib dri=false -k
  26
  27
  28 Using
  29 =====
  30
  31 Building will create a drop-in alternative for libGL.so. To use it set the
  32 environment variables:
  33
  34   export LD_LIRBARY_PATH=$PWD/build/linux-x86-debug/lib:$LD_LIRBARY_PATH
  35   export LD_LIRBARY_PATH=$PWD/build/linux-x86_64-debug/lib:$LD_LIRBARY_PATH
  36
  37
  38 Unit testing
  39 ============
  40
  41 Building will also create several unit tests in
  42 build/linux-???-debug/gallium/drivers/llvmpipe:
  43
  44  - lp_test_blend: blending
  45  - lp_test_conv: SIMD vector conversion
  46  - lp_test_format: pixel unpacking/packing
  47
  48