PixarAnimationStudios
Setting up Model Cards textures can hang HdStorm/USDVIEW
Description of Issue
Setting up Model Card textures on point instances can cause hdStorm / usdview to hang. See repro steps bellow.
Breaking while it hangs it is looping here : https://github.com/PixarAnimationStudios/OpenUSD/blob/dev/pxr/imaging/hdSt/mesh.cpp#L366
I think numInstanceLevels is initialized to 0.... so -1 and it being a size_t/unsigned...it starts looping at the max value... it would probably end eventually...but....going to be a while!
Steps to Reproduce
Using this USDA file with a simple point instancer with draw modes / cards :
#usda 1.0
(
endTimeCode = 1
startTimeCode = 0
)
def Xform "Comp" (
apiSchemas = ["GeomModelAPI"]
kind = "assembly"
)
{
def PointInstancer "Instancer" (
kind = "assembly"
)
{
point3f[] positions = [(0, 0, 0), (4, 4, 4)]
int[] protoIndices.timeSamples = {
0: [1, 1],
}
rel prototypes = [
</Comp/Instancer/Protos/Proto1>,
</Comp/Instancer/Protos/Proto2>,
]
def "Protos" (
kind = "assembly"
)
{
def Xform "Proto1" (
apiSchemas = ["GeomModelAPI"]
kind = "component"
)
{
uniform token model:cardGeometry = "cross"
uniform token model:drawMode = "cards"
token visibility = "visible"
def Cube "cube"
{
color3f[] primvars:displayColor = [(1, 0, 0)]
}
}
def Xform "Proto2" (
apiSchemas = ["GeomModelAPI"]
kind = "component"
)
{
uniform token model:cardGeometry = "cross"
uniform token model:drawMode = "cards"
token visibility = "visible"
def Cone "cone"
{
color3f[] primvars:displayColor = [(0, 1, 0)]
}
}
}
}
}
From the interpreter in USDVIEW, run this :
p = usdviewApi.stage.GetPrimAtPath("/Comp/Instancer/Protos/Proto2") m = UsdGeom.ModelAPI.Apply(p) m.CreateModelCardTextureXPosAttr().Set("D:\\Models\\USD\\uvgrid.jpg") m.CreateModelCardTextureYPosAttr().Set("D:\\Models\\USD\\uvgrid.jpg")
System Information (OS, Hardware)
Windows
Package Versions
0.24.05
