Template:HammerVersion/Version/Old Engine

Version	Game/Branch	Release date	Features
4.0 (build 2934)[confirm]	All Source 2004 games	November 05, 2004	Initial release of Hammer in the Source SDK. Updates: Source Engine materials system. Materials created with the Source Engine's advanced shader-based texturing system are properly rendered inside the Hammer Editor. Displacement surfaces. A new class of mesh geometry that can be sculpted into different shapes and connected to one another to create terrain and other complex surfaces. Input and Outputs entity system. Entities use a new method to trigger and connect to one another, offering a higher level of flexibility and control than ever before. Hierarchical VisGroups. Objects can now be in multiple VisGroups, and Visgroups can be organized in a hierarchical manner for easier selection and organization. Entity Helpers. New user interface controls that make editing parameters on entities such as spotlights and doors easier and clearer. Per-face Lightmap controls. Lightmap density can be controlled on a per-face basis for more control over the balance of visual quality and rendering performance. Sound Browser. Built-in browser to hear a preview of sounds available to level designers. Non-modal Entity Report and Check for Problems dialogs. Dialogs are now non-modal, allowing for changes in the level and camera controls while using the information in the dialog boxes. Smoothing Groups. Per-face control of lighting-based smoothing. Find and Replace. Functions to both search and replace for text in any entity name, parameter, input, or output. Selection Mode toolbar. A new toolbar to control the impact of groups and entities upon the selection tools. Overlays. A new type of texture entity, similar to decals, but with far greater control over how it is applied to surfaces.
4.0 (build 2959)	Source 2004	November 22-30, 2004[confirm]	Updated version of Source SDK 2004.
4.1 (build 3316)	Half-Life 2: Lost Coast, All Source 2006 games and newer	November 22, 2005	Updates: HDR tools support. Hammer now have the options to compile maps with HDR support. All game FGDs was also updated to include options for changing value for users running the game with HDR enabled. Map compilers (including VRAD) have been also updated with HDR support. VGUI Model Browser. All new model browser with a full tree control and real-time 3D previewing of model geometry, rendered with the Source material system. Enhanced 2D and 3D Views. 2D and 3D views are now rendered with a unified Source materials system, allowing for real-time feedback of transformations in all viewports simultaneously, and much faster rendering of the viewports. 2D model and displacement Rendering. Prop models and displacement geometry rendering in 2D viewports. Enhanced Auto Visgroups. A larger number of Visgroup categories, as well as an improved interface makes Visgroups more powerful. Autosave feature. Creates automatic, numbered backups of maps, with options for when and where backups are created. Paste Special enhancements. Provides options for renaming objects when pasted to avoid name collisions with automatic entity I/O fixup.
4.1 (build 3466)	SiN Episodes	April 21, 2006 (build date) May 2006 (release)
4.1 (build 4037)	Source 2006	November 13, 2007	Last Old Engine (and Source 2006) version of Hammer. Todo: Changes?