yorung’s gists

yorung / DefineABuffer.h

Created January 15, 2017 13:36

[DX12] Define a vertex buffer and its view.

	ID3D12Resource* vertexBuffer;
	D3D12_VERTEX_BUFFER_VIEW vertexBufferView;

yorung / set_render_target_and_clear.cpp

Last active September 3, 2016 16:54

[DX12] Create RTV and DSV on stack and discard immediately. Unlike D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV, RTV and DSV can discard after API calls.

	// DON'T DO THIS!!
	// It seems working fine, however the DX12 debug layer treat this as following error.
	//
	// "An ID3D12DescriptorHeap object referenced in a command list ID3D12GraphicsCommandList Object "..." was
	// deleted prior to executing the command list. This is invalid and can result in application instability.
	// [ EXECUTION ERROR #921: OBJECT_DELETED_WHILE_STILL_IN_USE]"
	//
	ComPtr<ID3D12DescriptorHeap> rtvHeap, dsvHeap;
	const D3D12_DESCRIPTOR_HEAP_DESC rtvHeapDesc = { D3D12_DESCRIPTOR_HEAP_TYPE_RTV, 1 };
	device->CreateDescriptorHeap(&rtvHeapDesc, IID_PPV_ARGS(&rtvHeap));

yorung / set_index_buffer.cpp

Created September 3, 2016 11:39

[DX12] Set index buffer, forget D3D12_INDEX_BUFFER_VIEW.

	void SetIndexBuffer(ID3D12GraphicsCommandList* list, ID3D12Resource* indexBuffer)
	{
	D3D12_RESOURCE_DESC desc = indexBuffer->GetDesc();
	D3D12_INDEX_BUFFER_VIEW indexBufferView = { indexBuffer->GetGPUVirtualAddress(), (UINT)desc.Width, AFIndexTypeToDevice };
	list->IASetIndexBuffer(&indexBufferView);
	}

yorung / dx12_extract_root_signature_from_shader_binary.cpp

Last active March 14, 2020 20:15

[DX12] Extract root signature binary from a shader binary created with D3DCompileFromFile.

	...
	ComPtr<ID3DBlob> vertexShader = afCompileHLSL(shaderName, "VSMain", "vs_5_0");
	ComPtr<ID3DBlob> pixelShader = afCompileHLSL(shaderName, "PSMain", "ps_5_0");
	ComPtr<ID3DBlob> rootSignatureBlob;
	ComPtr<ID3D12RootSignature> rootSignature;
	if (S_OK == D3DGetBlobPart(vertexShader->GetBufferPointer(), vertexShader->GetBufferSize(), D3D_BLOB_ROOT_SIGNATURE, 0, &rootSignatureBlob))
	{
	device->CreateRootSignature(0, rootSignatureBlob->GetBufferPointer(), rootSignatureBlob->GetBufferSize(), IID_PPV_ARGS(&rootSignature));
	}
	...

yorung / sky_cubemap.hlsl

Created August 27, 2016 04:06

[DX12] Define root signature in HLSL.

	cbuffer perObject : register(b0)
	{
	row_major matrix invVP;
	}

	TextureCube texCube : register(t0);
	SamplerState samplerState : register(s0);

	struct VsToPs
	{

yorung / upload_texture.cpp

Created August 21, 2016 11:49

[DX12] Upload texture.

	void afWriteTexture(ComPtr<ID3D12Resource> tex, const TexDesc& desc, int mipCount, const AFTexSubresourceData datas[])
	{
	const int maxSubresources = 100;
	const UINT subResources = mipCount * desc.arraySize;
	assert(subResources <= maxSubresources);
	D3D12_PLACED_SUBRESOURCE_FOOTPRINT footprints[maxSubresources];
	UINT64 rowSizeInBytes[maxSubresources], uploadSize;
	UINT numRows[maxSubresources];
	D3D12_RESOURCE_BARRIER transitions1[maxSubresources], transitions2[maxSubresources];
	deviceMan.GetDevice()->GetCopyableFootprints(&tex->GetDesc(), 0, subResources, 0, footprints, numRows, rowSizeInBytes, &uploadSize);

yorung / dx12_create_texture_from_dds.cpp

Last active August 21, 2016 12:31

[DX12] Create texture from dds files.

	struct DDSHeader {
	uint32_t h3[3];
	int h, w;
	uint32_t h2[2];
	int mipCnt;
	uint32_t h13[13];
	uint32_t fourcc, bitsPerPixel, rMask, gMask, bMask, aMask, caps1, caps2;
	bool IsCubeMap() const { return caps2 == 0xFE00; }
	int GetArraySize() const { return IsCubeMap() ? 6 : 1; }
	int GetMipCnt() const { return std::max(mipCnt, 1); }

yorung / simple_texture_uploader.cpp

Last active July 27, 2016 16:28

[DX12] Simple texture uploader

	void afWriteBuffer(const ComPtr<ID3D12Resource> res, const void* buf, int size)
	{
	void* p;
	D3D12_RANGE readRange = {};
	res->Map(0, &readRange, &p);
	memcpy(p, buf, size);
	D3D12_RANGE wroteRange = {0, (SIZE_T)size};
	id->Unmap(0, &wroteRange);
	}

yorung / end_frame.cpp

Created July 23, 2016 08:50

[DX12] Record fenceValue to both command queue and frameResource.

	FrameResources& res = frameResources[frameIndex];
	commandQueue->Signal(fence.Get(), res.fenceValueToGuard = fenceValue++);

yorung / begin_frame.cpp

Created July 23, 2016 08:35

[DX12] Wait GPU commands finish that committed 2 frames before.

	frameIndex = swapChain->GetCurrentBackBufferIndex();
	FrameResources& res = frameResources[frameIndex];
	WaitFenceValue(fence, res.fenceValueToGuard);

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