제가 그 튜토리얼 dx12 내용 : https://www.braynzarsoft.net/viewtutorial/q16390-directx-12-constant-buffers-root-descriptor-tables#c0여러 일정한 버퍼 - 등록 - dx12
는 I 2 상수 버퍼있어이 단계를 수정하려고 시도 (그래서 레지스터 B0 및 B1 내가 잘 이해 경우). 내 루트 기호에 말을 시작하는 것을 들어
2 개 매개 변수가 지금
// create root signature
// create a descriptor range (descriptor table) and fill it out
// this is a range of descriptors inside a descriptor heap
D3D12_DESCRIPTOR_RANGE descriptorTableRanges[1]; // only one range right now
descriptorTableRanges[0].RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_CBV; // this is a range of constant buffer views (descriptors)
descriptorTableRanges[0].NumDescriptors = 2; // we only have one constant buffer, so the range is only 1
descriptorTableRanges[0].BaseShaderRegister = 0; // start index of the shader registers in the range
descriptorTableRanges[0].RegisterSpace = 0; // space 0. can usually be zero
descriptorTableRanges[0].OffsetInDescriptorsFromTableStart = D3D12_DESCRIPTOR_RANGE_OFFSET_APPEND; // this appends the range to the end of the root signature descriptor tables
// create a descriptor table
D3D12_ROOT_DESCRIPTOR_TABLE descriptorTable;
descriptorTable.NumDescriptorRanges = 0;// _countof(descriptorTableRanges); // we only have one range
descriptorTable.pDescriptorRanges = &descriptorTableRanges[0]; // the pointer to the beginning of our ranges array
D3D12_ROOT_DESCRIPTOR_TABLE descriptorTable2;
descriptorTable2.NumDescriptorRanges = 1;// _countof(descriptorTableRanges); // we only have one range
descriptorTable2.pDescriptorRanges = &descriptorTableRanges[0]; // the pointer to the beginning of our ranges array
// create a root parameter and fill it out
D3D12_ROOT_PARAMETER rootParameters[2]; // only one parameter right now
rootParameters[0].ParameterType = D3D12_ROOT_PARAMETER_TYPE_DESCRIPTOR_TABLE; // this is a descriptor table
rootParameters[0].DescriptorTable = descriptorTable; // this is our descriptor table for this root parameter
rootParameters[0].ShaderVisibility = D3D12_SHADER_VISIBILITY_VERTEX; // our pixel shader will be the only shader accessing this parameter for now
rootParameters[1].ParameterType = D3D12_ROOT_PARAMETER_TYPE_DESCRIPTOR_TABLE; // this is a descriptor table
rootParameters[1].DescriptorTable = descriptorTable2; // this is our descriptor table for this root parameter
rootParameters[1].ShaderVisibility = D3D12_SHADER_VISIBILITY_VERTEX; // our pixel shader will be the only shader accessing this parameter for now
하지만 변수에 일정한 버퍼를 연결하는 데 실패, 나는 코드의이 부분에 수정하려고 :
// Create a constant buffer descriptor heap for each frame
// this is the descriptor heap that will store our constant buffer descriptor
for (int i = 0; i < frameBufferCount; ++i)
{
D3D12_DESCRIPTOR_HEAP_DESC heapDesc = {};
heapDesc.NumDescriptors = 1;
heapDesc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE;
heapDesc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV;
hr = device->CreateDescriptorHeap(&heapDesc, IID_PPV_ARGS(&mainDescriptorHeap[i]));
if (FAILED(hr))
{
Running = false;
}
}
// create the constant buffer resource heap
// We will update the constant buffer one or more times per frame, so we will use only an upload heap
// unlike previously we used an upload heap to upload the vertex and index data, and then copied over
// to a default heap. If you plan to use a resource for more than a couple frames, it is usually more
// efficient to copy to a default heap where it stays on the gpu. In this case, our constant buffer
// will be modified and uploaded at least once per frame, so we only use an upload heap
// create a resource heap, descriptor heap, and pointer to cbv for each frame
for (int i = 0; i < frameBufferCount; ++i)
{
hr = device->CreateCommittedResource(
&CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD), // this heap will be used to upload the constant buffer data
D3D12_HEAP_FLAG_NONE, // no flags
&CD3DX12_RESOURCE_DESC::Buffer(1024 * 64), // size of the resource heap. Must be a multiple of 64KB for single-textures and constant buffers
D3D12_RESOURCE_STATE_GENERIC_READ, // will be data that is read from so we keep it in the generic read state
nullptr, // we do not have use an optimized clear value for constant buffers
IID_PPV_ARGS(&constantBufferUploadHeap[i]));
constantBufferUploadHeap[i]->SetName(L"Constant Buffer Upload Resource Heap");
D3D12_CONSTANT_BUFFER_VIEW_DESC cbvDesc = {};
cbvDesc.BufferLocation = constantBufferUploadHeap[i]->GetGPUVirtualAddress();
cbvDesc.SizeInBytes = (sizeof(ConstantBuffer) + 255) & ~255; // CB size is required to be 256-byte aligned.
device->CreateConstantBufferView(&cbvDesc, mainDescriptorHeap[i]->GetCPUDescriptorHandleForHeapStart());
ZeroMemory(&cbColorMultiplierData, sizeof(cbColorMultiplierData));
CD3DX12_RANGE readRange(0, 0); // We do not intend to read from this resource on the CPU. (End is less than or equal to begin)
hr = constantBufferUploadHeap[i]->Map(0, &readRange, reinterpret_cast<void**>(&cbColorMultiplierGPUAddress[i]));
memcpy(cbColorMultiplierGPUAddress[i], &cbColorMultiplierData, sizeof(cbColorMultiplierData));
}
감사
감사합니다, 나는 actualy 그 작업, 그 문제를 지적하고 나에게 난 더 이상이 코드가없는 HLSL 루트 서명 : 에 대한 링크를 제공하기 : https://github.com/Zeldarck/TrainingDx12 그러나 나는 그래픽 프로그래밍을 시작 미래 이 문제에 백업합니다, 그래서 너무 DX11에서 아무것도 몰라. 경고를 주셔서 감사하지만 잠시 나 dx12를 계속하는 것을 더 좋아합니다. – Zeldarck
@ Zeldarck @ Zeldarck 아주 나쁜 생각이지만, 그것에 충실하면 좋습니다. Microsoft 설명서를 읽고 또 배우고 자습서를 피하십시오. 설명서를 읽고 API에 대한 지식을 쌓으십시오. 위험 할 때는 CPU/GPU 동기화 및 메모리 관리에 특히주의하십시오. – galop1n