home *** CD-ROM | disk | FTP | other *** search
- '''OpenGL extension NV.fragment_program2
-
- Overview (from the spec)
-
- This extension, like the NV_fragment_program_option extension, provides
- additional fragment program functionality to extend the standard
- ARB_fragment_program language and execution environment. ARB programs
- wishing to use this added functionality need only add:
-
- OPTION NV_fragment_program2;
-
- to the beginning of their fragment programs.
-
- New functionality provided by this extension, above and beyond that
- already provided by the NV_fragment_program_option extension, includes:
-
-
- * structured branching support, including data-dependent IF tests, loops
- supporting a fixed number of iterations, and a data-dependent loop
- exit instruction (BRK),
-
- * subroutine calls,
-
- * instructions to perform vector normalization, divide vector components
- by a scalar, and perform two-component dot products (with or without a
- scalar add),
-
- * an instruction to perform a texture lookup with an explicit LOD,
-
- * a loop index register for indirect access into the texture coordinate
- attribute array, and
-
- * a facing attribute that indicates whether the fragment is generated
- from a front- or back-facing primitive.
-
-
- The official definition of this extension is available here:
- http://oss.sgi.com/projects/ogl-sample/registry/NV/fragment_program2.txt
-
- Automatically generated by the get_gl_extensions script, do not edit!
- '''
- from OpenGL import platform, constants, constant, arrays
- from OpenGL import extensions
- from OpenGL.GL import glget
- import ctypes
- EXTENSION_NAME = 'GL_NV_fragment_program2'
- GL_MAX_PROGRAM_EXEC_INSTRUCTIONS_NV = constant.Constant( 'GL_MAX_PROGRAM_EXEC_INSTRUCTIONS_NV', 0x88F4 )
- GL_MAX_PROGRAM_CALL_DEPTH_NV = constant.Constant( 'GL_MAX_PROGRAM_CALL_DEPTH_NV', 0x88F5 )
- GL_MAX_PROGRAM_IF_DEPTH_NV = constant.Constant( 'GL_MAX_PROGRAM_IF_DEPTH_NV', 0x88F6 )
- GL_MAX_PROGRAM_LOOP_DEPTH_NV = constant.Constant( 'GL_MAX_PROGRAM_LOOP_DEPTH_NV', 0x88F7 )
- GL_MAX_PROGRAM_LOOP_COUNT_NV = constant.Constant( 'GL_MAX_PROGRAM_LOOP_COUNT_NV', 0x88F8 )
-
-
- def glInitFragmentProgram2NV():
- '''Return boolean indicating whether this extension is available'''
- return extensions.hasGLExtension( EXTENSION_NAME )
-