NAME
    vp20 - OpenGL fragment profile for NV2x (GeForce3, GeForce4 Ti, Quadro
    DCC, etc.)

SYNPOSIS
      vp20

DESCRIPTION
    This OpenGL profile corresponds to the per-vertex functionality
    introduced by GeForce3.

    The compiler output for this profile conforms to the assembly format
    defined by NV_vertex_program1_1 (which assumes NV_vertex_program).

    Data-dependent loops are not allowed; all loops must be unrollable.

    Conditional expressions are supported without branching so both
    conditions must be evaluated.

    Relative indexing of uniform arrays *is* supported; but texture accesses
    are not supported.

3D API DEPENDENCIES
    Requires OpenGL support for NV_vertex_program and NV_vertex_program1_1
    extensions. These extensions were introduced by GeForce3 and Quadro DCC
    GPUs.

  OpenGL Extension Specifications

     http://www.opengl.org/registry/specs/NV/vertex_program.txt 
     http://www.opengl.org/registry/specs/NV/vertex_program1_1.txt 

PROFILE OPTIONS
    PosInv=*val*
        Non-zero means generates code for position-invariant (with
        fixed-function) position transformation.

    MaxLocalParams=*val*
        Maximum number of local parameters the implementation supports.

DATA TYPES
    *to-be-written*

SEMANTICS
  VARYING INPUT SEMANTICS

    *to-be-written*

  UNIFORM INPUT SEMANTICS

    *to-be-written*

  OUTPUT SEMANTICS

    *to-be-written*

STANDARD LIBRARY ISSUES
    *to-be-written*

