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'''OpenGL extension NV.vertex_program4
This module customises the behaviour of the
OpenGL.raw.GL.NV.vertex_program4 to provide a more
Python-friendly API
Overview (from the spec)
This extension builds on the common assembly instruction set
infrastructure provided by NV_gpu_program4, adding vertex program-specific
features.
This extension provides the ability to specify integer vertex attributes
that are passed to vertex programs using integer data types, rather than
being converted to floating-point values as in existing vertex attribute
functions. The set of input and output bindings provided includes all
bindings supported by ARB_vertex_program. This extension provides
additional input bindings identifying the index of the vertex when vertex
arrays are used ("vertex.id") and the instance number when instanced
arrays are used ("vertex.instance", requires EXT_draw_instanced). It
also provides output bindings allowing vertex programs to directly specify
clip distances (for user clipping) plus a set of generic attributes that
allow programs to pass a greater number of attributes to subsequent
pipeline stages than is possible using only the pre-defined fixed-function
vertex outputs.
By and large, programs written to ARB_vertex_program can be ported
directly by simply changing the program header from "!!ARBvp1.0" to
"!!NVvp4.0", and then modifying instructions to take advantage of the
expanded feature set. There are a small number of areas where this
extension is not a functional superset of previous vertex program
extensions, which are documented in the NV_gpu_program4 specification.
The official definition of this extension is available here:
http://www.opengl.org/registry/specs/NV/vertex_program4.txt
'''
from OpenGL import platform, constant, arrays
from OpenGL import extensions, wrapper
import ctypes
from OpenGL.raw.GL import _types, _glgets
from OpenGL.raw.GL.NV.vertex_program4 import *
from OpenGL.raw.GL.NV.vertex_program4 import _EXTENSION_NAME
def glInitVertexProgram4NV():
'''Return boolean indicating whether this extension is available'''
from OpenGL import extensions
return extensions.hasGLExtension( _EXTENSION_NAME )
glVertexAttribI1ivEXT=wrapper.wrapper(glVertexAttribI1ivEXT).setInputArraySize(
'v', 1
)
glVertexAttribI2ivEXT=wrapper.wrapper(glVertexAttribI2ivEXT).setInputArraySize(
'v', 2
)
glVertexAttribI3ivEXT=wrapper.wrapper(glVertexAttribI3ivEXT).setInputArraySize(
'v', 3
)
glVertexAttribI4ivEXT=wrapper.wrapper(glVertexAttribI4ivEXT).setInputArraySize(
'v', 4
)
glVertexAttribI1uivEXT=wrapper.wrapper(glVertexAttribI1uivEXT).setInputArraySize(
'v', 1
)
glVertexAttribI2uivEXT=wrapper.wrapper(glVertexAttribI2uivEXT).setInputArraySize(
'v', 2
)
glVertexAttribI3uivEXT=wrapper.wrapper(glVertexAttribI3uivEXT).setInputArraySize(
'v', 3
)
glVertexAttribI4uivEXT=wrapper.wrapper(glVertexAttribI4uivEXT).setInputArraySize(
'v', 4
)
glVertexAttribI4bvEXT=wrapper.wrapper(glVertexAttribI4bvEXT).setInputArraySize(
'v', 4
)
glVertexAttribI4svEXT=wrapper.wrapper(glVertexAttribI4svEXT).setInputArraySize(
'v', 4
)
glVertexAttribI4ubvEXT=wrapper.wrapper(glVertexAttribI4ubvEXT).setInputArraySize(
'v', 4
)
glVertexAttribI4usvEXT=wrapper.wrapper(glVertexAttribI4usvEXT).setInputArraySize(
'v', 4
)
# INPUT glVertexAttribIPointerEXT.pointer size not checked against 'size,type,stride'
glVertexAttribIPointerEXT=wrapper.wrapper(glVertexAttribIPointerEXT).setInputArraySize(
'pointer', None
)
glGetVertexAttribIivEXT=wrapper.wrapper(glGetVertexAttribIivEXT).setOutput(
'params',size=(1,),orPassIn=True
)
glGetVertexAttribIuivEXT=wrapper.wrapper(glGetVertexAttribIuivEXT).setOutput(
'params',size=(1,),orPassIn=True
)
### END AUTOGENERATED SECTION
|
