Function CreateVolumeTexture

trinity/Tr2ImageIOHelpers.cpp:48–88

}

bool CreateVolumeTexture( ImageIO::HostBitmap& bitmap, Tr2TextureAL& out, uint32_t& memoryUse, Tr2PrimaryRenderContext& renderContext )
{
	CCP_STATS_ZONE( __FUNCTION__ );

	if( !bitmap.IsValid() )
	{
		return false;
	}

	BeTimer create;

	const unsigned trueMipLevelCount = bitmap.GetTrueMipCount();

	std::vector<Tr2SubresourceData> initData;

	//
	// Copy the pixels into the locked D3D surface (one copy per mip)
	//
	for( unsigned i = 0; i != trueMipLevelCount; ++i )
	{
		Tr2SubresourceData srd;

		srd.m_sysMem = const_cast<char*>( bitmap.GetMipRawData( i ) );
		srd.m_sysMemSlicePitch = bitmap.GetMipSize( i ) / std::max( bitmap.GetMipDepth( i ), 1u );
		srd.m_sysMemPitch = bitmap.GetMipPitch( i );

		if( !srd.m_sysMem )
		{
			return false;
		}

		//const unsigned mipDepth = std::max( ih.GetDepth() >> i, 1u );
		//srd.m_sysMemSlicePitch	/= mipDepth;

		initData.push_back( srd );

		memoryUse += bitmap.GetMipSize( i );
	}

	return !FAILED( out.Create( bitmap, Tr2GpuUsage::SHADER_RESOURCE, &initData[0], renderContext ) );
}

}