Photoshop helps you set scenes, advance narratives, and reveal truths with a rich set of pens, brushes, and color and painting capabilities.
The goal of this plug-in is to improve the connection between Maxwell Render and Photoshop. The Maxwell Render Image format (MXI) is a very rich container that can include all channels/passes that Maxwell Render generates, so you can access all of them as layers in Photoshop, avoiding the use of intermediate formats (EXRs and so on).
The Maxwell Render importer plug-in allows you to load MXI files into a Photoshop document. You can choose the bitdepth (8, 16 and 32 bits) of the buffers when you load a MXI image. The buffers are shown in separated layers, including:
Mac OSX version doesn't allow to choose the bitdepth. By default the MXI will be opened in 32 bits.
Please copy alpha into a separate greyscale buffer (create a new document) if you're going to use it as layer mask. Otherwise, mask won't look correct with RGB alpha.
The plug-in creates a layered structure (see the image below), with the extra buffers below (they appear disabled as they do not contribute directly to the final result), and the “light buffers” above them (including the emitters and environment layers). A “Background” layer is also created with a “Background Mask” that allows you to replace the background with a new one of your choice.
All the light layers should be set to Linear Dodge (Add) blending mode (MXI bitdepth = 32), and the Background Mask to Multiply blending mode. This way, the whole render will be displayed as the sum of the contribution of all the independent emitters together, giving you precise control over each of them. A render layer, which comes directly from the rendering process, is put on top.
Maxwell | Photoshop documentation