| 14 | } |
| 15 | |
| 16 | VltBufferSlice VltStagingDataAlloc::alloc(VkDeviceSize size, VkDeviceSize align) |
| 17 | { |
| 18 | if (size > MaxBufferSize) |
| 19 | return VltBufferSlice(createBuffer(size)); |
| 20 | |
| 21 | if (m_buffer == nullptr) |
| 22 | m_buffer = createBuffer(MaxBufferSize); |
| 23 | |
| 24 | if (!m_buffer->isInUse()) |
| 25 | m_offset = 0; |
| 26 | |
| 27 | m_offset = util::align(m_offset, align); |
| 28 | |
| 29 | if (m_offset + size > MaxBufferSize) |
| 30 | { |
| 31 | m_offset = 0; |
| 32 | |
| 33 | if (m_buffers.size() < MaxBufferCount) |
| 34 | m_buffers.push(std::move(m_buffer)); |
| 35 | |
| 36 | if (!m_buffers.front()->isInUse()) |
| 37 | { |
| 38 | m_buffer = std::move(m_buffers.front()); |
| 39 | m_buffers.pop(); |
| 40 | } |
| 41 | else |
| 42 | { |
| 43 | m_buffer = createBuffer(MaxBufferSize); |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | VltBufferSlice slice(m_buffer, m_offset, size); |
| 48 | m_offset = util::align(m_offset + size, align); |
| 49 | return slice; |
| 50 | } |
| 51 | |
| 52 | void VltStagingDataAlloc::trim() |
| 53 | { |