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from OpenGL.arrays import vbo
from OpenGL.GL.ARB import vertex_buffer_object
from OpenGL.GL.ARB import uniform_buffer_object
from OpenGL.GL.ARB import texture_buffer_object
from OpenGL.GL.ARB import enhanced_layouts
class Implementation( vbo.Implementation ):
"""OpenGL ARB extension-based implementation of VBO interfaces"""
def __init__( self ):
for name in self.EXPORTED_NAMES:
source = name
if name.startswith( 'GL_'):
source = name + '_ARB'
else:
source = name + 'ARB'
found = False
for source_extension in (
vertex_buffer_object,
uniform_buffer_object,
texture_buffer_object,
enhanced_layouts,
):
try:
setattr( self, name, getattr( source_extension, source ))
except AttributeError as err:
try:
setattr( self, name, getattr( source_extension, name ))
except AttributeError as err:
pass
else:
found = True
else:
found =True
break
assert found, name
if self.glGenBuffers:
self.available = True
Implementation.register()
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