public void Flush()
{
if (m_mesh == null)
{
Debug.LogWarning("AlembicPointsRenderer: mesh is not assigned");
return;
}
if (m_materials == null || m_materials.Length == 0 || (m_materials.Length == 1 && m_materials[0] == null))
{
Debug.LogWarning("AlembicPointsRenderer: material is not assigned");
return;
}
var points = GetComponent <AlembicPoints>();
var abcData = points.abcData;
int max_instances = points.abcPeakVertexCount;
int instance_count = abcData.count;
m_bounds.center = mul(abcData.boundsCenter, m_trans_scale);
m_bounds.extents = mul(abcData.boundsExtents, m_trans_scale);
if (instance_count == 0)
{
return;
} // nothing to draw
// update data texture
if (m_texPositions == null)
{
int height = ceildiv(max_instances, TextureWidth);
m_texPositions = CreateDataTexture(TextureWidth, height, RenderTextureFormat.ARGBFloat);
m_texIDs = CreateDataTexture(TextureWidth, height, RenderTextureFormat.RFloat);
}
AbcAPI.aiPointsCopyPositionsToTexture(ref abcData, m_texPositions.GetNativeTexturePtr(), m_texPositions.width, m_texPositions.height, AbcAPI.GetTextureFormat(m_texPositions));
AbcAPI.aiPointsCopyIDsToTexture(ref abcData, m_texIDs.GetNativeTexturePtr(), m_texIDs.width, m_texIDs.height, AbcAPI.GetTextureFormat(m_texIDs));
if (m_expanded_mesh == null)
{
m_expanded_mesh = CreateExpandedMesh(m_mesh, max_instances, out m_instances_par_batch);
m_expanded_mesh.UploadMeshData(true);
return;
}
if (m_actual_materials == null)
{
m_actual_materials = new List <List <Material> >();
while (m_actual_materials.Count < m_materials.Length)
{
m_actual_materials.Add(new List <Material>());
}
}
var trans = GetComponent <Transform>();
m_expanded_mesh.bounds = m_bounds;
m_count_rate = Mathf.Max(m_count_rate, 0.0f);
instance_count = Mathf.Min((int)(instance_count * m_count_rate), (int)(max_instances * m_count_rate));
int batch_count = ceildiv(instance_count, m_instances_par_batch);
// clone materials if needed
for (int i = 0; i < m_actual_materials.Count; ++i)
{
var a = m_actual_materials[i];
while (a.Count < batch_count)
{
Material m = CloneMaterial(m_materials[i], a.Count);
a.Add(m);
}
}
// update materials
var worldToLocalMatrix = trans.localToWorldMatrix;
ForEachEveryMaterials((m) =>
{
m.SetInt("_NumInstances", instance_count);
m.SetVector("_CountRate", new Vector4(m_count_rate, 1.0f / m_count_rate, 0.0f, 0.0f));
m.SetVector("_ModelScale", m_model_scale);
m.SetVector("_TransScale", m_trans_scale);
m.SetMatrix("_Transform", worldToLocalMatrix);
});
// issue draw calls
int layer = gameObject.layer;
Matrix4x4 matrix = Matrix4x4.identity;
m_actual_materials.ForEach(a =>
{
for (int i = 0; i < batch_count; ++i)
{
Graphics.DrawMesh(m_expanded_mesh, matrix, a[i], layer, null, 0, null, m_cast_shadow, m_receive_shadow);
}
});
}
