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cross-platform rendering backend #145

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cross-platform rendering backend #145

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38 changes: 30 additions & 8 deletions deepdrr/projector/projector.py
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Original file line number Diff line number Diff line change
Expand Up @@ -38,7 +38,16 @@
from .mcgpu_mfp_data import MFP_DATA
from .mcgpu_rita_samplers import rita_samplers

from pyrender.platforms import egl
import sys
if sys.platform.startswith("win"):
# Windows support
os.environ["PYOPENGL_PLATFORM"] = "pyglet"
else:
# Linux support
os.environ.setdefault("PYOPENGL_PLATFORM", "egl")

import pyrender

from ..pyrenderdrr.renderer import Renderer

from functools import lru_cache
Expand Down Expand Up @@ -1407,13 +1416,26 @@ def initialize(self):
height = self.camera_intrinsics.sensor_height
total_pixels = width * height

device_id = int(os.environ.get("EGL_DEVICE_ID", "0"))
egl_device = egl.get_device_by_index(device_id)
self._egl_platform = egl.EGLPlatform(
viewport_width=width, viewport_height=height, device=egl_device
)
self._egl_platform.init_context()
self._egl_platform.make_current()
if os.environ["PYOPENGL_PLATFORM"] == "egl":
# On Linux, use EGL to create window + context
from pyrender.platforms import egl
device_id = int(os.environ.get("EGL_DEVICE_ID", "0"))
egl_device = egl.get_device_by_index(device_id)
egl_platform = egl.EGLPlatform(
viewport_width=width, viewport_height=height, device=egl_device
)
egl_platform.init_context()
egl_platform.make_current()
else:
# On Windows, use headless pyglet backend
import pyglet
from pyglet import gl
pyglet.options['headless'] = True
config = gl.Config(double_buffer=False)
window = pyglet.window.Window(
width=width, height=height, config=config, visible=False
)
window.switch_to()

self.cupy_device = cupy.cuda.Device(self.cuda_device_id)
self.cupy_device.__enter__()
Expand Down