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'''OpenGL extension EXT.draw_buffers
This module customises the behaviour of the
OpenGL.raw.GLES2.EXT.draw_buffers to provide a more
Python-friendly API
Overview (from the spec)
This extension increases the number of available framebuffer object
color attachment points, extends OpenGL ES 2.0 to allow multiple output
colors, and provides a mechanism for directing those outputs to
multiple color buffers.
This extension is similar to the combination of the GL_NV_draw_buffers
and GL_NV_fbo_color_attachments extensions, but imposes certain
restrictions informed by the OpenGL ES 3.0 API.
The official definition of this extension is available here:
http://www.opengl.org/registry/specs/EXT/draw_buffers.txt
'''
from OpenGL import platform, constant, arrays
from OpenGL import extensions, wrapper
import ctypes
from OpenGL.raw.GLES2 import _types, _glgets
from OpenGL.raw.GLES2.EXT.draw_buffers import *
from OpenGL.raw.GLES2.EXT.draw_buffers import _EXTENSION_NAME
def glInitDrawBuffersEXT():
'''Return boolean indicating whether this extension is available'''
from OpenGL import extensions
return extensions.hasGLExtension( _EXTENSION_NAME )
# INPUT glDrawBuffersEXT.bufs size not checked against n
glDrawBuffersEXT=wrapper.wrapper(glDrawBuffersEXT).setInputArraySize(
'bufs', None
)
### END AUTOGENERATED SECTION
from OpenGL.lazywrapper import lazy as _lazy
@_lazy( glDrawBuffers )
def glDrawBuffers( baseOperation, n=None, bufs=None ):
"""glDrawBuffers( bufs ) -> bufs
Wrapper will calculate n from dims of bufs if only
one argument is provided...
"""
if bufs is None:
bufs = n
n = None
bufs = arrays.GLenumArray.asArray( bufs )
if n is None:
n = arrays.GLenumArray.arraySize( bufs )
return baseOperation( n,bufs )
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