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from __future__ import annotations
import pytest
from pyvista import _vtk
from pyvista.plotting.render_passes import RenderPasses
# this ideally would be a fixture, but if it's a fixture the renderer object
# collects immediately since RenderPasses only holds a weakref
def make_passes():
ren = _vtk.vtkRenderer()
passes = RenderPasses(ren)
return ren, passes
def test_render_passes_init():
ren, passes = make_passes()
assert passes._renderer is ren
del ren
# ensure renderer is collected
assert passes._renderer is None
def test_blur_pass():
ren, passes = make_passes()
assert not passes._blur_passes
blur_pass = passes.add_blur_pass()
assert isinstance(blur_pass, _vtk.vtkGaussianBlurPass)
assert len(passes._blur_passes) == 1
passes.remove_blur_pass()
assert not passes._blur_passes
# double pass should work
blur_pass = passes.add_blur_pass()
blur_pass = passes.add_blur_pass()
assert len(passes._blur_passes) == 2
def test_ssaa_pass():
ren, passes = make_passes()
assert not passes._passes
ssaa_pass = passes.enable_ssaa_pass()
assert isinstance(ssaa_pass, _vtk.vtkSSAAPass)
assert list(passes._passes.keys()).count('vtkSSAAPass') == 1
# enabling again should not add the pass again
ssaa_pass = passes.enable_ssaa_pass()
assert list(passes._passes.keys()).count('vtkSSAAPass') == 1
passes.disable_ssaa_pass()
assert not passes._passes
# disabling again should just do nothing
passes.disable_ssaa_pass()
assert not passes._passes
def test_depth_of_field_pass():
ren, passes = make_passes()
assert not passes._passes
ren_pass = passes.enable_depth_of_field_pass()
assert isinstance(ren_pass, _vtk.vtkDepthOfFieldPass)
assert list(passes._passes.keys()).count('vtkDepthOfFieldPass') == 1
# enabling again should not add the pass again
ren_pass = passes.enable_depth_of_field_pass()
assert list(passes._passes.keys()).count('vtkDepthOfFieldPass') == 1
passes.disable_depth_of_field_pass()
assert not passes._passes
# disabling again should just do nothing
passes.disable_depth_of_field_pass()
assert not passes._passes
def test_depth_of_field_raise_no_ssao():
ren, passes = make_passes()
passes.enable_ssao_pass(radius=0.5, bias=0.005, kernel_size=16, blur=False)
with pytest.raises(RuntimeError, match='Depth of field pass is incompatible'):
passes.enable_depth_of_field_pass()
def test_ssao_raise_no_depth_of_field():
ren, passes = make_passes()
passes.enable_depth_of_field_pass()
with pytest.raises(RuntimeError, match='SSAO pass is incompatible'):
passes.enable_ssao_pass(radius=0.5, bias=0.005, kernel_size=16, blur=False)
def test_shadow_pass():
ren, passes = make_passes()
ren_pass = passes.enable_shadow_pass()
assert isinstance(ren_pass, _vtk.vtkShadowMapPass)
assert passes._pass_collection.IsItemPresent(ren_pass)
passes.disable_shadow_pass()
assert not passes._pass_collection.IsItemPresent(ren_pass)
def test_edl_pass():
ren, passes = make_passes()
assert not passes._passes
ren_pass = passes.enable_edl_pass()
assert isinstance(ren_pass, _vtk.vtkEDLShading)
assert list(passes._passes.keys()).count('vtkEDLShading') == 1
# enabling again should just not add the pass again
ren_pass = passes.enable_edl_pass()
assert list(passes._passes.keys()).count('vtkEDLShading') == 1
passes.disable_edl_pass()
assert not passes._passes
# disabling again should just do nothing
passes.disable_edl_pass()
assert not passes._passes
def test_ssao_pass():
ren, passes = make_passes()
assert not passes._passes
ren_pass = passes.enable_ssao_pass(radius=0.5, bias=0.005, kernel_size=16, blur=False)
assert isinstance(ren_pass, _vtk.vtkSSAOPass)
assert list(passes._passes.keys()).count('vtkSSAOPass') == 1
# enabling again should just not add the pass again
ren_pass = passes.enable_ssao_pass(radius=0.5, bias=0.005, kernel_size=16, blur=False)
assert list(passes._passes.keys()).count('vtkSSAOPass') == 1
passes.disable_ssao_pass()
assert not passes._passes
# disabling again should just do nothing
passes.disable_ssao_pass()
assert not passes._passes
def test_render_passes_deep_clean():
ren, passes = make_passes()
passes.add_blur_pass()
passes.enable_depth_of_field_pass()
passes.enable_edl_pass()
passes.enable_shadow_pass()
passes.enable_ssaa_pass()
passes.deep_clean()
del ren
assert passes._renderer is None
assert passes._RenderPasses__seq_pass is None
assert passes._RenderPasses__pass_collection is None
assert passes._RenderPasses__camera_pass is None
assert passes._passes == {}
assert passes._shadow_map_pass is None
assert passes._edl_pass is None
assert passes._dof_pass is None
assert passes._ssaa_pass is None
assert passes._blur_passes == []
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