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tests: Use triangle instead of card for color buffer tests 

This works around the fact that the tinydisplay rasterizer can have a 1-pixel
overlap at triangle boundaries
This commit is contained in:
rdb 2026-01-29 19:33:34 +01:00
parent dbe05e079b
commit a4508065e2
1 changed files with 10 additions and 14 deletions
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24
tests/display/test_color_buffer.py
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@ -121,7 +121,7 @@ def render_color_pixel(region, state, vertex_color=None):
if sattr and sattr.auto_shader():
pytest.skip("Cannot test auto-shader without Cg shader support")
# Set up the scene with a blank card rendering at specified distance.
# Set up the scene with a blank triangle rendering at specified distance.
scene = core.NodePath("root")
scene.set_attrib(core.DepthTestAttrib.make(core.RenderAttrib.M_always))
@ -134,35 +134,31 @@ def render_color_pixel(region, state, vertex_color=None):
else:
format = core.GeomVertexFormat.get_v3()
vdata = core.GeomVertexData("card", format, core.Geom.UH_static)
vdata.unclean_set_num_rows(4)
vdata = core.GeomVertexData("triangle", format, core.Geom.UH_static)
vdata.unclean_set_num_rows(3)
vertex = core.GeomVertexWriter(vdata, "vertex")
vertex.set_data3(core.Vec3.rfu(-1, 0, 1))
vertex.set_data3(core.Vec3.rfu(-1, 0, -1))
vertex.set_data3(core.Vec3.rfu(1, 0, 1))
vertex.set_data3(core.Vec3.rfu(1, 0, -1))
vertex.set_data3(core.Vec3.rfu(-1, 0, -3))
vertex.set_data3(core.Vec3.rfu(3, 0, 1))
if vertex_color is not None:
color = core.GeomVertexWriter(vdata, "color")
color.set_data4(vertex_color)
color.set_data4(vertex_color)
color.set_data4(vertex_color)
color.set_data4(vertex_color)
strip = core.GeomTristrips(core.Geom.UH_static)
strip = core.GeomTriangles(core.Geom.UH_static)
strip.set_shade_model(core.Geom.SM_uniform)
strip.add_next_vertices(4)
strip.close_primitive()
strip.add_next_vertices(3)
geom = core.Geom(vdata)
geom.add_primitive(strip)
gnode = core.GeomNode("card")
gnode = core.GeomNode("triangle")
gnode.add_geom(geom, state)
card = scene.attach_new_node(gnode)
card.set_pos(0, 2, 0)
card.set_scale(60)
triangle = scene.attach_new_node(gnode)
triangle.set_pos(0, 2, 0)
region.active = True
region.camera = camera