Spaces:
Sleeping
Sleeping
File size: 1,846 Bytes
b4c8bc3 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 |
from .base import Platform
__all__ = ['OSMesaPlatform']
class OSMesaPlatform(Platform):
"""Renders into a software buffer using OSMesa. Requires special versions
of OSMesa to be installed, plus PyOpenGL upgrade.
"""
def __init__(self, viewport_width, viewport_height):
super(OSMesaPlatform, self).__init__(viewport_width, viewport_height)
self._context = None
self._buffer = None
def init_context(self):
from OpenGL import arrays
from OpenGL.osmesa import (
OSMesaCreateContextAttribs, OSMESA_FORMAT,
OSMESA_RGBA, OSMESA_PROFILE, OSMESA_CORE_PROFILE,
OSMESA_CONTEXT_MAJOR_VERSION, OSMESA_CONTEXT_MINOR_VERSION,
OSMESA_DEPTH_BITS
)
attrs = arrays.GLintArray.asArray([
OSMESA_FORMAT, OSMESA_RGBA,
OSMESA_DEPTH_BITS, 24,
OSMESA_PROFILE, OSMESA_CORE_PROFILE,
OSMESA_CONTEXT_MAJOR_VERSION, 3,
OSMESA_CONTEXT_MINOR_VERSION, 3,
0
])
self._context = OSMesaCreateContextAttribs(attrs, None)
self._buffer = arrays.GLubyteArray.zeros(
(self.viewport_height, self.viewport_width, 4)
)
def make_current(self):
from OpenGL import GL as gl
from OpenGL.osmesa import OSMesaMakeCurrent
assert(OSMesaMakeCurrent(
self._context, self._buffer, gl.GL_UNSIGNED_BYTE,
self.viewport_width, self.viewport_height
))
def make_uncurrent(self):
"""Make the OpenGL context uncurrent.
"""
pass
def delete_context(self):
from OpenGL.osmesa import OSMesaDestroyContext
OSMesaDestroyContext(self._context)
self._context = None
self._buffer = None
def supports_framebuffers(self):
return False
|