Method CreateEmptyTexture

trinity/Resources/TriTextureRes.cpp:981–1029

}

bool TriTextureRes::CreateEmptyTexture( uint32_t width, uint32_t height, uint32_t mipCount, Tr2RenderContextEnum::PixelFormat format )
{
	USE_MAIN_THREAD_RENDER_CONTEXT();

	if( !width || !height )
	{
		return false;
	}

	DestroyOwnTexture();

	Tr2BitmapDimensions bmp( width, height, mipCount, format );

	auto trueMipLevelCount = bmp.GetTrueMipCount();
	unsigned memoryUse = 0;

	std::vector<uint8_t> empty;
	empty.resize( bmp.GetMipSize( 0 ), 0 );

	std::vector<Tr2SubresourceData> initData( trueMipLevelCount );

	for( unsigned i = 0; i != trueMipLevelCount; ++i )
	{
		Tr2SubresourceData& srd = initData[i];
		srd.m_sysMem = empty.data();
		srd.m_sysMemSlicePitch = bmp.GetMipSize( i );
		srd.m_sysMemPitch = bmp.GetMipPitch( i );
		memoryUse += srd.m_sysMemSlicePitch;
	}

	CR_RETURN_VAL( m_ownTexture.Create(
					   bmp,
					   Tr2GpuUsage::SHADER_RESOURCE,
					   Tr2CpuUsage::READ | Tr2CpuUsage::WRITE,
					   initData.data(),
					   renderContext ),
				   false );

	*static_cast<Tr2BitmapDimensions*>( this ) = m_ownTexture.GetDesc();

	m_memoryUse = memoryUse;
	m_originalMemoryUse = memoryUse;

	CCP_STATS_ADD( textureResBytes, m_memoryUse );
	SetTexture( m_ownTexture );
	SetPrepared( true );
	SetGood( true );
	return true;
}

BlueStdResult TriTextureRes::CreateFromTexture( TriTextureRes* texture )
{