void SimpleRWLock::UnLock() {
UINT64 oldVal = itsLock;
HT_ASSERT(oldVal != Free);
if ((oldVal & NoWriterBitMask) == 0) {
itsLock = Free;
} else {
while (!CAS64(&itsLock, oldVal, oldVal+1)) {
oldVal = itsLock;
HT_ASSERT(oldVal != Free);
HT_ASSERT((oldVal & NoWriterBitMask) != 0);
}
}
}
void SimpleRWLock::LockForRead() {
UINT64 oldVal = itsLock;
while (((oldVal & NoWriterBitMask) == 0) ||
!CAS64(&itsLock, oldVal, oldVal-1)) {
oldVal = itsLock;
}
HT_ASSERT(((oldVal-1) & NoWriterBitMask) != 0);
}
void BufferLayout::Init(void* shaderBlob) {
ID3DBlob* shader = static_cast<ID3DBlob*>(shaderBlob);
std::vector<D3D11_INPUT_ELEMENT_DESC> elementDescs;
u32 lastBuffer = -1;
for (u32 i = 0; i < m_Attributes.size(); i++) {
D3D11_INPUT_ELEMENT_DESC current = {};
current.SemanticName = m_Attributes[i].semanticName.GetData();
if (m_Attributes[i].type == DataType::MATRIX4) {
for (int k = 0; k < 4; k++) {
current.SemanticIndex = k;
current.Format = DXGI_FORMAT_R32G32B32A32_FLOAT;
current.InputSlot = m_Attributes[i].bufferId;
current.InputSlotClass = m_Attributes[i].instancing ? D3D11_INPUT_PER_INSTANCE_DATA : D3D11_INPUT_PER_VERTEX_DATA;
current.InstanceDataStepRate = m_Attributes[i].instancing ? 1 : 0;
if (lastBuffer != m_Attributes[i].bufferId) {
lastBuffer = m_Attributes[i].bufferId;
current.AlignedByteOffset = 0;
}
else {
current.AlignedByteOffset = D3D11_APPEND_ALIGNED_ELEMENT;
}
elementDescs.push_back(current);
}
}
else {
current.SemanticIndex = 0;
if (static_cast<DXGI_FORMAT>(m_Attributes[i].type) == DXGI_FORMAT_R32_FLOAT) {
switch (m_Attributes[i].count) {
case 1:
current.Format = DXGI_FORMAT_R32_FLOAT;
break;
case 2:
current.Format = DXGI_FORMAT_R32G32_FLOAT;
break;
case 3:
current.Format = DXGI_FORMAT_R32G32B32_FLOAT;
break;
case 4:
current.Format = DXGI_FORMAT_R32G32B32A32_FLOAT;
break;
default:
HT_ASSERT(false, "[BufferLayout] Attribute count not supported.");
}
}
else {
current.Format = static_cast<DXGI_FORMAT>(m_Attributes[i].type);
}
current.InputSlot = m_Attributes[i].bufferId;
current.InputSlotClass = m_Attributes[i].instancing ? D3D11_INPUT_PER_INSTANCE_DATA : D3D11_INPUT_PER_VERTEX_DATA;
current.InstanceDataStepRate = m_Attributes[i].instancing ? 1 : 0;
if (lastBuffer != m_Attributes[i].bufferId) {
lastBuffer = m_Attributes[i].bufferId;
current.AlignedByteOffset = 0;
}
else {
current.AlignedByteOffset = D3D11_APPEND_ALIGNED_ELEMENT;
}
elementDescs.push_back(current);
}
}
DX(HT_DXDEVICE->CreateInputLayout(&elementDescs[0], elementDescs.size(), shader->GetBufferPointer(), shader->GetBufferSize(), &m_InputLayout));
}
void SimpleLock::UnLock() {
HT_ASSERT(itsLock != Free);
itsLock = Free;
}
