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#include "stdafx.h"
#include "ConstantBuffer.h"
#include "../D3D/MappedResource.h"
using namespace DirectCompute;
HRESULT ConstantBuffer::create()
{
if( nullptr == buffer )
{
CD3D11_BUFFER_DESC desc{ 16 * 3 * 2, D3D11_BIND_CONSTANT_BUFFER, D3D11_USAGE_DYNAMIC, D3D11_CPU_ACCESS_WRITE };
return device()->CreateBuffer( &desc, nullptr, &buffer );
}
return HRESULT_FROM_WIN32( ERROR_ALREADY_INITIALIZED );
}
namespace
{
__forceinline void copy32( __m128i* rdi, const TensorShape& ts )
{
_mm_storeu_si128( rdi, ts.sizeVec() );
_mm_storeu_si128( rdi + 1, ts.stridesVec() );
}
}
HRESULT ConstantBuffer::update( const TensorShape& t0 )
{
MappedResource mapped;
CHECK( mapped.map( buffer, false ) );
__m128i* const rdi = ( __m128i* )mapped.data();
copy32( rdi, t0 );
return S_OK;
}
HRESULT ConstantBuffer::update( const TensorShape& t0, const TensorShape& t1 )
{
MappedResource mapped;
CHECK( mapped.map( buffer, false ) );
__m128i* const rdi = ( __m128i* )mapped.data();
copy32( rdi, t0 );
copy32( rdi + 2, t1 );
return S_OK;
}
HRESULT ConstantBuffer::update( const TensorShape& t0, const TensorShape& t1, const TensorShape& t2 )
{
MappedResource mapped;
CHECK( mapped.map( buffer, false ) );
__m128i* const rdi = ( __m128i* )mapped.data();
copy32( rdi, t0 );
copy32( rdi + 2, t1 );
copy32( rdi + 4, t2 );
return S_OK;
}
void ConstantBuffer::bind() const
{
ID3D11Buffer* p = buffer;
assert( nullptr != p );
context()->CSSetConstantBuffers( 0, 1, &p );
}
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