int vertexCount = frameVertices[0].length;
FloatArray verticesArray = slot.getAttachmentVertices();
if (verticesArray.size != vertexCount) alpha = 1; // Don't mix from uninitialized slot vertices.
verticesArray.size = 0;
verticesArray.ensureCapacity(vertexCount);
verticesArray.size = vertexCount;
float[] vertices = verticesArray.items;
if (time >= frames[frames.length - 1]) { // Time is after last frame.
float[] lastVertices = frameVertices[frames.length - 1];