protected override sealed VFXExpression[] BuildExpression(VFXExpression[] inputExpression)
{
var mesh = inputExpression[0].valueType == VFXValueType.Mesh ? inputExpression[0] : new VFXExpressionMeshFromSkinnedMeshRenderer(inputExpression[0]);
var meshVertexCount = new VFXExpressionMeshVertexCount(mesh);
return(new VFXExpression[] { meshVertexCount });
}
public static IEnumerable <VFXExpression> SampleVertexAttribute(VFXExpression source, VFXExpression vertexIndex, VFXOperatorUtility.SequentialAddressingMode mode, IEnumerable <VertexAttribute> vertexAttributes)
{
bool skinnedMesh = source.valueType == UnityEngine.VFX.VFXValueType.SkinnedMeshRenderer;
var mesh = !skinnedMesh ? source : new VFXExpressionMeshFromSkinnedMeshRenderer(source);
var meshVertexCount = new VFXExpressionMeshVertexCount(mesh);
vertexIndex = VFXOperatorUtility.ApplyAddressingMode(vertexIndex, meshVertexCount, mode);
return(SampleVertexAttribute(source, vertexIndex, vertexAttributes));
}
protected override sealed VFXExpression[] BuildExpression(VFXExpression[] inputExpression)
{
var mesh = inputExpression[0];
var meshVertexStride = new VFXExpressionMeshVertexStride(mesh);
var meshVertexCount = new VFXExpressionMeshVertexCount(mesh);
var vertexIndex = VFXOperatorUtility.ApplyAddressingMode(inputExpression[1], meshVertexCount, mode);
var outputExpressions = new List <VFXExpression>();
foreach (var vertexAttribute in GetOutputVertexAttributes())
{
var meshChannelOffset = new VFXExpressionMeshChannelOffset(mesh, VFXValue.Constant <uint>((uint)GetActualVertexAttribute(vertexAttribute)));
var outputType = GetOutputType(vertexAttribute);
VFXExpression sampled = null;
if (vertexAttribute == VertexAttributeFlag.Color)
{
sampled = new VFXExpressionSampleMeshColor(mesh, vertexIndex, meshChannelOffset, meshVertexStride);
}
else if (outputType == typeof(float))
{
sampled = new VFXExpressionSampleMeshFloat(mesh, vertexIndex, meshChannelOffset, meshVertexStride);
}
else if (outputType == typeof(Vector2))
{
sampled = new VFXExpressionSampleMeshFloat2(mesh, vertexIndex, meshChannelOffset, meshVertexStride);
}
else if (outputType == typeof(Vector3))
{
sampled = new VFXExpressionSampleMeshFloat3(mesh, vertexIndex, meshChannelOffset, meshVertexStride);
}
else
{
sampled = new VFXExpressionSampleMeshFloat4(mesh, vertexIndex, meshChannelOffset, meshVertexStride);
}
outputExpressions.Add(sampled);
}
return(outputExpressions.ToArray());
}
protected override sealed VFXExpression[] BuildExpression(VFXExpression[] inputExpression)
{
var meshVertexCount = new VFXExpressionMeshVertexCount(inputExpression[0]);
return(new VFXExpression[] { meshVertexCount });
}
