54 switch (mesh.indices()->type()) {
55 case fb::IndexType::k16Bit:
58 case fb::IndexType::k32Bit:
63 const uint8_t* vertices_start;
64 size_t vertices_bytes;
67 switch (mesh.vertices_type()) {
68 case fb::VertexBuffer::UnskinnedVertexBuffer: {
69 const auto* vertices =
70 mesh.vertices_as_UnskinnedVertexBuffer()->vertices();
71 vertices_start =
reinterpret_cast<const uint8_t*
>(vertices->Get(0));
72 vertices_bytes = vertices->size() *
sizeof(fb::Vertex);
76 case fb::VertexBuffer::SkinnedVertexBuffer: {
77 const auto* vertices = mesh.vertices_as_SkinnedVertexBuffer()->vertices();
78 vertices_start =
reinterpret_cast<const uint8_t*
>(vertices->Get(0));
79 vertices_bytes = vertices->size() *
sizeof(fb::SkinnedVertex);
83 case fb::VertexBuffer::NONE:
88 const uint8_t* indices_start =
89 reinterpret_cast<const uint8_t*
>(mesh.indices()->data()->Data());
91 const size_t indices_bytes = mesh.indices()->data()->size();
92 if (vertices_bytes == 0 || indices_bytes == 0) {
96 DeviceBufferDescriptor buffer_desc;
97 buffer_desc.size = vertices_bytes + indices_bytes;
100 auto buffer = allocator.CreateBuffer(buffer_desc);
101 buffer->SetLabel(
"Mesh vertices+indices");
103 if (!buffer->CopyHostBuffer(vertices_start, Range(0, vertices_bytes))) {
106 if (!buffer->CopyHostBuffer(indices_start, Range(0, indices_bytes),
111 VertexBuffer vertex_buffer = {
112 .vertex_buffer = {.buffer = buffer, .range = Range(0, vertices_bytes)},
113 .index_buffer = {.buffer = buffer,
114 .range = Range(vertices_bytes, indices_bytes)},
115 .vertex_count = mesh.indices()->count(),
116 .index_type = index_type,