// TODO: PERF make this do 3 blocks 8 bytes at once for better perf
// TODO: PERF use HashCode.Add not Combine
private static uint Crc32CElseHashCodeCombine(byte *first, nuint length)
{
uint value = ~0u;
var leadingBytes = MathHelpers.AlignUp(first, 8);
// handle leading bytes until 8 byte aligned
while (first < leadingBytes)
{
value = Hash(value, *first++);
length--;
}
ulong *pLong = (ulong *)first;
byte * last = first + length;
byte * alignedLast = first + MathHelpers.AlignDown(length, 8);
// handle main in 8 byte chunks until we can't anymore
ulong tmpValue = value;
while (pLong < alignedLast)
{
tmpValue = Hash8(tmpValue, *pLong++);
}
value = (uint)tmpValue;
// handle trailing
first = (byte *)pLong;
while (first < last)
{
value = Hash(value, *first++);
}
return(value);
public BasicSceneRenderer(GraphicsDevice device)
{
_device = device;
_rtvs = _device.CreateDescriptorHeap(DescriptorHeapType.RenderTargetView, 1);
_dsvs = _device.CreateDescriptorHeap(DescriptorHeapType.RenderTargetView, 1);
_textureHandle = _device.AllocateResourceDescriptors(2);
_texturedObjects = ModelLoader.LoadGl_Old("Assets/Gltf/Handgun_NoTangent.gltf");
//_texturedObjects = new[] { GeometryGenerator.CreateCube(0.5f) };
var texture = TextureLoader.LoadTextureDesc("Assets/Textures/handgun_c.dds");
var normals = TextureLoader.LoadTextureDesc("Assets/Textures/handgun_n.dds");
_vertexBuffer = new Buffer[_texturedObjects.Length];
_indexBuffer = new Buffer[_texturedObjects.Length];
using (var list = _device.BeginUploadContext())
{
for (var i = 0; i < _texturedObjects.Length; i++)
{
_vertexBuffer[i] = list.UploadBuffer(_texturedObjects[i].Vertices);
_vertexBuffer[i].SetName("VertexBuffer");
_indexBuffer[i] = list.UploadBuffer(_texturedObjects[i].Indices);
_indexBuffer[i].SetName("IndexBuffer");
}
_texture = list.UploadTexture(texture);
_texture.SetName("Gun texture");
}
//list.UploadTexture(normals.Data.Span, normals.SubresourceData.Span, normals.Desc, ResourceState.PixelShaderResource, out _normals);
//_normals.SetName("Gun normals");
_device.CreateShaderResourceView(_texture, _textureHandle[0]);
//_normalHandle = _device.CreateShaderResourceView(_normals);
_objectConstants = new ObjectConstants[_texturedObjects.Length];
_obj = _device.Allocator.AllocateBuffer(MathHelpers.AlignUp(sizeof(ObjectConstants), 256) * _texturedObjects.Length, MemoryAccess.CpuUpload);
_obj.SetName("ObjectConstants buffer");
_frame = _device.Allocator.AllocateBuffer(sizeof(FrameConstants), MemoryAccess.CpuUpload);
_frame.SetName("FrameConstants buffer");
_light = _device.Allocator.AllocateBuffer(sizeof(LightConstants), MemoryAccess.CpuUpload);
_light.SetName("LightConstants buffer");
CreatePipelines();
InitializeConstants();
}
public static void DebugStream(D3D12_PIPELINE_STATE_STREAM_DESC *pDesc)
{
nint bytesParsed = 0;
byte *pStart = (byte *)pDesc->pPipelineStateSubobjectStream;
while (bytesParsed < (nint)pDesc->SizeInBytes)
{
var element = *(D3D12_PIPELINE_STATE_SUBOBJECT_TYPE *)&pStart[bytesParsed];
bytesParsed += sizeof(D3D12_PIPELINE_STATE_SUBOBJECT_TYPE);
Console.WriteLine($"Element {element}");
bytesParsed += MathHelpers.AlignUp(GetSubobjectSize(element), sizeof(void *));
}
}
