| 37 | // TODO: proper error (return) value handling everywhere |
| 38 | |
| 39 | cuda_buffer::cuda_buffer(const device_queue& cqueue, |
| 40 | const size_t& size_, |
| 41 | std::span<uint8_t> host_data_, |
| 42 | const MEMORY_FLAG flags_, |
| 43 | device_buffer* shared_buffer_) : |
| 44 | device_buffer(cqueue, size_, host_data_, flags_, shared_buffer_) { |
| 45 | if(size < min_multiple()) return; |
| 46 | |
| 47 | switch(flags & MEMORY_FLAG::READ_WRITE) { |
| 48 | case MEMORY_FLAG::READ: |
| 49 | case MEMORY_FLAG::WRITE: |
| 50 | case MEMORY_FLAG::READ_WRITE: |
| 51 | // no special handling for cuda |
| 52 | break; |
| 53 | // all possible cases handled |
| 54 | default: floor_unreachable(); |
| 55 | } |
| 56 | |
| 57 | switch(flags & MEMORY_FLAG::HOST_READ_WRITE) { |
| 58 | case MEMORY_FLAG::HOST_READ: |
| 59 | case MEMORY_FLAG::HOST_WRITE: |
| 60 | case MEMORY_FLAG::NONE: |
| 61 | // no special handling for cuda |
| 62 | break; |
| 63 | case MEMORY_FLAG::HOST_READ_WRITE: |
| 64 | // both - this is the default |
| 65 | break; |
| 66 | // all possible cases handled |
| 67 | default: floor_unreachable(); |
| 68 | } |
| 69 | |
| 70 | // TODO: handle the remaining flags + host ptr |
| 71 | |
| 72 | // need to allocate the buffer on the correct device, if a context was specified, |
| 73 | // else: assume the correct context is already active |
| 74 | const auto& cuda_dev = (const cuda_device&)cqueue.get_device(); |
| 75 | if (cuda_dev.ctx != nullptr) { |
| 76 | if (!cuda_dev.make_context_current()) { |
| 77 | throw std::runtime_error("failed to make CUDA context current for buffer allocation"); |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | // check Vulkan buffer sharing validity |
| 82 | if (has_flag<MEMORY_FLAG::VULKAN_SHARING>(flags)) { |
| 83 | #if defined(FLOOR_NO_VULKAN) |
| 84 | log_error("Vulkan support is not enabled"); |
| 85 | return; |
| 86 | #else |
| 87 | if (!cuda_can_use_external_memory()) { |
| 88 | log_error("can't use Vulkan buffer sharing, because use of external memory is not supported"); |
| 89 | return; |
| 90 | } |
| 91 | #endif |
| 92 | } |
| 93 | |
| 94 | // actually create the buffer |
| 95 | if(!create_internal(true, cqueue)) { |
| 96 | return; // can't do much else |
nothing calls this directly
no test coverage detected