public ApplyAddressingModeTestCase(VFXOperatorUtility.SequentialAddressingMode _mode, uint _count)
{
mode = _mode;
count = _count;
expectedSequence = new uint[Mathf.Max(50, 7 * (int)_count)];
//Naive implementation for reference
if (mode == VFXOperatorUtility.SequentialAddressingMode.Clamp)
{
for (uint i = 0; i < expectedSequence.Length; ++i)
{
expectedSequence[i] = i < count ? i : count - 1;
}
}
else if (mode == VFXOperatorUtility.SequentialAddressingMode.Wrap)
{
uint current = 0u;
for (uint i = 0; i < expectedSequence.Length; ++i)
{
expectedSequence[i] = current;
current++;
if (current >= count)
{
current = 0u;
}
}
}
else if (mode == VFXOperatorUtility.SequentialAddressingMode.Mirror)
{
uint current = 0u;
bool increment = true;
for (uint i = 0; i < expectedSequence.Length; ++i)
{
expectedSequence[i] = current;
if (increment)
{
current++;
if (current >= count)
{
increment = false;
current = count > 2u ? count - 2u : 0u;
}
}
else
{
if (current == 0u)
{
increment = true;
current = count == 1u ? 0u : 1u;
}
else
{
current--;
}
}
}
}
}
public static IEnumerable <VFXExpression> SampleTriangleAttribute(VFXExpression source, VFXExpression triangleIndex, VFXExpression coord, VFXOperatorUtility.SequentialAddressingMode mode, SurfaceCoordinates coordMode, IEnumerable <VertexAttribute> vertexAttributes)
{
bool skinnedMesh = source.valueType == UnityEngine.VFX.VFXValueType.SkinnedMeshRenderer;
var mesh = !skinnedMesh ? source : new VFXExpressionMeshFromSkinnedMeshRenderer(source);
var UintThree = VFXOperatorUtility.ThreeExpression[UnityEngine.VFX.VFXValueType.Uint32];
var meshIndexCount = new VFXExpressionMeshIndexCount(mesh);
var triangleCount = meshIndexCount / UintThree;
triangleIndex = VFXOperatorUtility.ApplyAddressingMode(triangleIndex, triangleCount, mode);
return(SampleTriangleAttribute(source, triangleIndex, coord, coordMode, vertexAttributes));
}
public static IEnumerable <VFXExpression> SampleEdgeAttribute(VFXExpression source, VFXExpression index, VFXExpression x, VFXOperatorUtility.SequentialAddressingMode mode, IEnumerable <VertexAttribute> vertexAttributes)
{
bool skinnedMesh = source.valueType == UnityEngine.VFX.VFXValueType.SkinnedMeshRenderer;
var mesh = !skinnedMesh ? source : new VFXExpressionMeshFromSkinnedMeshRenderer(source);
var meshIndexCount = new VFXExpressionMeshIndexCount(mesh);
index = VFXOperatorUtility.ApplyAddressingMode(index, meshIndexCount, mode);
return(SampleEdgeAttribute(source, index, x, vertexAttributes));
}
