Method Create

trinity/Resources/TriTextureRes.cpp:1070–1130

}

bool TriTextureRes::Create( uint32_t width,
							uint32_t height,
							uint32_t mipCount,
							PixelFormat format,
							BufferUsageFlags usage,
							Tr2PrimaryRenderContext& renderContext )
{
	DestroyOwnTexture();

	auto gpuUsage = Tr2GpuUsage::SHADER_RESOURCE;
	auto cpuUsage = Tr2CpuUsage::NONE;

	if( ( usage & Tr2RenderContextEnum::USAGE_IMMUTABLE ) != 0 )
	{
		cpuUsage = cpuUsage | Tr2CpuUsage::READ;
	}
	else if( ( usage & Tr2RenderContextEnum::USAGE_LOCK_FREQUENTLY ) != 0 )
	{
		cpuUsage = cpuUsage | Tr2CpuUsage::WRITE_OFTEN;
	}
	else
	{
		cpuUsage = cpuUsage | Tr2CpuUsage::WRITE;
	}
	if( ( usage & Tr2RenderContextEnum::USAGE_CPU_READ ) != 0 )
	{
		cpuUsage = cpuUsage | Tr2CpuUsage::READ;
	}
	if( ( usage & Tr2RenderContextEnum::USAGE_UNORDERED_ACCESS ) != 0 )
	{
		gpuUsage = gpuUsage | Tr2GpuUsage::UNORDERED_ACCESS;
	}
	if( ( usage & Tr2RenderContextEnum::USAGE_SHADER_RESOURCE ) != 0 )
	{
		gpuUsage = gpuUsage | Tr2GpuUsage::SHARED;
	}

	CR_RETURN_VAL( m_ownTexture.Create(
					   Tr2BitmapDimensions( width, height, mipCount, format ),
					   gpuUsage,
					   cpuUsage,
					   renderContext ),
				   false );

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

	m_memoryUse = 0;
	auto trueMipCount = GetTrueMipCount();
	for( uint32_t i = 0; i < trueMipCount; ++i )
	{
		m_memoryUse += GetMipSize( i );
	}
	m_memoryUse *= std::max( 1u, GetArraySize() );
	m_originalMemoryUse = m_memoryUse;

	CCP_STATS_ADD( textureResBytes, m_memoryUse );
	SetTexture( m_ownTexture );
	SetPrepared( true );