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'''OpenGL extension NVX.progress_fence
This module customises the behaviour of the
OpenGL.raw.GL.NVX.progress_fence to provide a more
Python-friendly API
Overview (from the spec)
This extension uses the concept of GL semaphores as defined in
GL_EXT_semaphore to better coordinate operations between multiple
GPU command streams. A semaphore type called "progress fence" is
derived from the GL semaphore. The progress fence semaphore is
created by CreateProgressFenceNVX() returning the name of a newly
created semaphore object. Like other semaphores, these are signaled
by the GL server. Each signal operation is queued in the GPU command
stream with an associated fence value that is written to the semaphore
at the completion of a signal operation.
A GL server wait can be added to the command stream using WaitSemaphoreui64NVX.
This blocks the GPU until the progress fence semaphore reaches or exceeds the
specified fence value.
A GL client wait can be initiated using ClientWaitSemaphoreui64NVX.
This blocks the CPU until the specified fence value is reached.
The official definition of this extension is available here:
http://www.opengl.org/registry/specs/NVX/progress_fence.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.NVX.progress_fence import *
from OpenGL.raw.GL.NVX.progress_fence import _EXTENSION_NAME
def glInitProgressFenceNVX():
'''Return boolean indicating whether this extension is available'''
from OpenGL import extensions
return extensions.hasGLExtension( _EXTENSION_NAME )
# INPUT glSignalSemaphoreui64NVX.fenceValueArray size not checked against fenceObjectCount
# INPUT glSignalSemaphoreui64NVX.semaphoreArray size not checked against fenceObjectCount
glSignalSemaphoreui64NVX=wrapper.wrapper(glSignalSemaphoreui64NVX).setInputArraySize(
'fenceValueArray', None
).setInputArraySize(
'semaphoreArray', None
)
# INPUT glWaitSemaphoreui64NVX.fenceValueArray size not checked against fenceObjectCount
# INPUT glWaitSemaphoreui64NVX.semaphoreArray size not checked against fenceObjectCount
glWaitSemaphoreui64NVX=wrapper.wrapper(glWaitSemaphoreui64NVX).setInputArraySize(
'fenceValueArray', None
).setInputArraySize(
'semaphoreArray', None
)
# INPUT glClientWaitSemaphoreui64NVX.fenceValueArray size not checked against fenceObjectCount
# INPUT glClientWaitSemaphoreui64NVX.semaphoreArray size not checked against fenceObjectCount
glClientWaitSemaphoreui64NVX=wrapper.wrapper(glClientWaitSemaphoreui64NVX).setInputArraySize(
'fenceValueArray', None
).setInputArraySize(
'semaphoreArray', None
)
### END AUTOGENERATED SECTION
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