protected int beginPrimitive(int vertexCount, int elemCount) {
int vertIdx = vertices.position() / VERTEX_SIZE;
int verts = vertIdx + vertexCount, elems = elements.position() + elemCount;
int availVerts = vertices.capacity() / VERTEX_SIZE, availElems = elements.capacity();
if ((verts > availVerts) || (elems > availElems)) {
IndexedTrisShader.this.flush();
if (verts > availVerts) expandVerts(verts);
if (elems > availElems) expandElems(elems);
return 0;
}
return vertIdx;
}
private void expandVerts(int vertCount) {
int newVerts = vertices.capacity() / VERTEX_SIZE;
while (newVerts < vertCount) newVerts += EXPAND_VERTS;
vertices.expand(newVerts * VERTEX_SIZE);
}
