public MeshWriteData DrawMesh(int vertexCount, int indexCount, Texture texture, Material material, MeshGenerationContext.MeshFlags flags)
{
var mwd = GetPooledMeshWriteData();
if (vertexCount == 0 || indexCount == 0)
{
mwd.Reset(new NativeSlice <Vertex>(), new NativeSlice <ushort>());
return(mwd);
}
m_CurrentEntry = new Entry()
{
vertices = m_VertsPool.Alloc(vertexCount),
indices = m_IndicesPool.Alloc(indexCount),
material = material,
uvIsDisplacement = (flags & MeshGenerationContext.MeshFlags.UVisDisplacement) == MeshGenerationContext.MeshFlags.UVisDisplacement,
clipRectID = m_ClipRectID,
stencilRef = m_StencilRef,
maskDepth = m_MaskDepth,
addFlags = VertexFlags.IsSolid
};
Debug.Assert(m_CurrentEntry.vertices.Length == vertexCount);
Debug.Assert(m_CurrentEntry.indices.Length == indexCount);
Rect uvRegion = new Rect(0, 0, 1, 1);
if (texture != null)
{
// Attempt to override with an atlas.
if (!((flags & MeshGenerationContext.MeshFlags.SkipDynamicAtlas) == MeshGenerationContext.MeshFlags.SkipDynamicAtlas) && m_Atlas != null && m_Atlas.TryGetAtlas(currentElement, texture as Texture2D, out TextureId atlas, out RectInt atlasRect))
{
m_CurrentEntry.addFlags = VertexFlags.IsDynamic;
uvRegion = new Rect(atlasRect.x, atlasRect.y, atlasRect.width, atlasRect.height);
m_CurrentEntry.texture = atlas;
m_Owner.AppendTexture(currentElement, texture, atlas, true);
}
else
{
TextureId id = TextureRegistry.instance.Acquire(texture);
m_CurrentEntry.addFlags = VertexFlags.IsTextured;
m_CurrentEntry.texture = id;
m_Owner.AppendTexture(currentElement, texture, id, false);
}
}