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| {{langsp}} | | {{APH|Cubemaps}} |
| [[File:Env_cubemap.png|left]]
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| [[File:Specular.jpg|thumb|right|300px|Specular reflections on props.]]
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| A '''cubemap''' is a texture that represents a three-dimensional rendering of an area. The [[Source|Source Engine]] uses [[env_cubemap]] entities as sampling points to generate these textures, which are then automatically embedded into the [[BSP|map file]]. Cubemaps, when [[#Building cubemaps|built]], are reflected on surfaces that use the [[$envmap]] parameter (with ''env_cubemap'' as its value).
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| == Building cubemaps ==
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| Building cubemaps is the process of generating their textures to then use them as reflections. For technical reasons, this process is not automated and is up to the user to do so; until then, existing '''env_cubemaps''' will remain unused and the map, depending on the game, will display either generic or "missing" textures as reflections due to nonexistent cubemaps.
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| {{ModernWarning|To build cubemaps, your game's screen resolution needs to be at least 4 times higher than the highest [[env cubemap#Keyvalues|size]] of an existing '''env_cubemap''', or else attempting to build them will either fail or even cause the game to crash. For example: if the highest '''env_cubemap''' sizes 128x128, a resolution of 512x512 will be needed. (''128 × 4 = '''512''' -> 720x576 or higher'')}}
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| {{ModernNote|Newly-built cubemaps will display after relaunching the game.}}
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| {{ModernNote|Its possible the game may appear to freeze during building of cubemaps. But it keeps on building cubemaps in the background. Be patient and do not close the game, or unfocus the game (Alt-Tabbing) as it may cause the game to crash. }}
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| {{ModernTip|Maxing out the game's visual settings before building cubemaps will generate their textures in the best-possible quality for the '''env_cubemaps'''<nowiki>'</nowiki> size.}}
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| {{ModernTip|The <code>buildcubemaps</code> command optionally accepts the number of iterations to perform. For example, <code>buildcubemaps 2 </code> will build cubemaps twice. This is useful when recursive reflections are needed to look correct, e.g. two buildings reflecting each other.}}
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| {{ModernWarning|Games running on Vulkan, like {{l4d2}}, will not pause the screen during building cubemaps, but the screen will violently flash black and white. But you must not alt tab out of this process to stop the flashing. If you are prone to epileptic seizures you should either look away or walk away from the computer.}}
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| === Before building ===
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| {{ModernTip|Maps for {{css}}'''Counter-Strike: Source''' and some other games are known for including pre-built, blank cubemaps after being compiled (even if there are no '''env_cubemaps''' in them). It is recommended to delete these cubemaps before building new ones, as explained [[#Deleting cubemaps|here]]. This can be automated by adding BSPZIP to the compile pipeline in Hammer.}}
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| === LDR ===
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| {{ModernNote|This step does not apply to {{l4d}} '''Left 4 Dead''' and {{csgo}}'''Counter-Strike: Global Offensive''' as its maps are compiled in [[#HDR|HDR mode]] only.}}
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| Building cubemaps on a map compiled in '''LDR''' (''Low Dynamic Range'') mode will generate textures only for that mode, regardless of your game's ''High Dynamic Range'' video setting. To build the cubemaps, submit the following commands into the game's console:
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| {| class="wikitable"
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| |-
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| ! Command !! Description
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| |-
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| | <code>mat_specular 0</code> || Disables reflections. Required to properly build cubemaps
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| |-
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| | <code>map ''cs_mymap''</code> || Loads a map; replace "''cs_mymap''" with the map's actual name
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| |-
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| | <code>sv_cheats 1</code> || Enables the use of cheat commands. Required to build cubemaps
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| |-
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| | <code>buildcubemaps</code> || Starts building cubemaps. Optionally, specify the number of iterations (default is 1)
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| |-
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| | <code>disconnect</code> || Unloads the map, returning you to the main menu
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| |-
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| | <code>mat_specular 1</code> || Enables reflections
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| |-
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| | <code>quit</code> || (optional) Closes the game. Relaunching it is required to display newly-built cubemaps
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| |}
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| === HDR ===
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| Building cubemaps on a map compiled with [[HDR]] support needs to be done twice - once for each mode ('''HDR''' and '''LDR'''). As opposed to a '''LDR''' map's case, your game's ''High Dynamic Range'' video setting has to be set to "Full" to build '''HDR''' cubemaps, and to "None" to build '''LDR''' ones. To build the cubemaps, submit the following commands into the game's console:
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| {| class="wikitable"
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| |-
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| ! Command !! Description
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| |-
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| | <code>mat_specular 0</code> || Disables reflections. Required to properly build cubemaps
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| |-
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| | <code>map ''cs_mymap''</code> || Loads a map; replace "''cs_mymap''" with the map's actual name
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| |-
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| | <code>sv_cheats 1</code> || Enables the use of cheat commands. Required to build cubemaps
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| |-
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| | <code>buildcubemaps</code> || Starts building cubemaps. Optionally, specify the number of iterations (default is 1)
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| |-
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| | <code>disconnect</code> || Unloads the map, returning you to the main menu
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| |-
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| | <code>sv_cheats 0</code> || Disables cheat commands. Prevents command <code>''mat_reloadallmaterials''</code> from unnecessarily self-executing and briefly freezing the game
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| |-
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| | <code>mat_hdr_level 0</code> || Switches to '''LDR''' mode (from '''HDR'''); submit <code>''mat_hdr_level 2''</code> instead if '''LDR''' cubemaps were built first
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| |-
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| | <code>map ''cs_mymap''</code> || Loads the map again to build cubemaps for the new mode
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| |-
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| | <code>sv_cheats 1</code> ||
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| |-
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| | <code>buildcubemaps</code> || Starts building cubemaps for the new mode. Optionally, specify the number of iterations (default is 1)
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| |-
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| | <code>disconnect</code> ||
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| |-
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| | <code>mat_specular 1</code> || Enables reflections
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| |-
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| | <code>mat_hdr_level ''0/1/2''</code> || If necessary, switches back to the mode it was before having submitted <code>''mat_hdr_level 0/2''</code>
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| |-
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| | <code>quit</code> || (optional) Closes the game. Relaunching it is required to display newly-built cubemaps
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| |}
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| === Half-Life: Source ===
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| {{ModernBug|Building cubemaps in {{hls}}'''Half-Life: Source''' is currently not possible as their textures, despite being generated, aren't embedded into the map file afterward.
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| {{ModernWorkaround|Move the map file into the "maps" folder of a game of the same engine branch (such as {{hl2}}'''Half-Life 2'''), build its cubemaps in that game, then move the file back into '''Half-Life: Source'''<nowiki>'</nowiki>s folder.}}}}
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| === Portal 2 ===
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| {{ModernBug|Building cubemaps in {{portal2}}'''Portal 2''' will fail if the BSP is not in the highest-numbered DLC folder (dlc2 by default).
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| {{ModernWorkaround|Either manually move the map there first, or edit the "'''place compiled maps in this directory before running the game'''" option in the [[Hammer_Build_Programs|Build Programs]] options tab to do so automatically.}}}}
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| === Source Filmmaker ===
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| [[Image:Cubemap_bug_sfm.jpg|thumb|right|300px|Improper rendering of an HDR cubemap's face in Source Filmmaker.]]
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| {{ModernBug|'''HDR''' cubemaps sizing lower than 64x64 built in {{tf2}}'''Team Fortress 2''' and some other games usually display graphical artifacts on reflections due to the last face of each cubemap not rendering properly in {{sfm}}'''Source Filmmaker'''. While rebuilding cubemaps in it would normally fix the issue, it is currently not possible to do so as '''Source Filmmaker''' generates blank textures.
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| {{ModernWorkaround|If recompiling a special version of an affected map with '''env_cubemaps''' now sizing 64x64 is not an option, move the map file into {{as}}'''Alien Swarm'''<nowiki>'</nowiki>s "maps" folder, build its cubemaps in that game, then move the file back into '''Source Filmmaker'''<nowiki>'</nowiki>s folder.}}}}
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| {{ModernNote|'''Alien Swarm'''<nowiki>'</nowiki>s "gameinfo.txt" file needs to be edited for this procedure so that the game can have access to assets used by other games' maps not to build cubemaps with missing textures or models. The file's "SearchPaths" section should be like this:}}
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| "SearchPaths"
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| {
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| "Game" "|gameinfo_path|."
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| "Game" "swarm_base"
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| "Game" "platform"
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| '''"Game" "..\SourceFilmmaker\game\usermod"'''
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| '''"Game" "..\SourceFilmmaker\game\tf_movies"'''
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| '''"Game" "..\SourceFilmmaker\game\tf"'''
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| '''"Game" "..\SourceFilmmaker\game\hl2"'''
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| }
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| {{ModernNote|{{tf2}}'''Team Fortress 2''' configurations were used for the example; consider replacing game subfolders (only those within '''Source Filmmaker''' paths) with the ones needed.}}
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| == Deleting cubemaps ==
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| Several tools make it possible to delete unnecessary or outdated cubemaps; of them all, [[BSPZIP]] not only is an official one, but is also the easiest and safest option for this procedure without potentially corrupting the map. To delete the cubemaps, execute the following command within the "maps" folder:
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| ..\..\bin\bspzip -deletecubemaps mapname.bsp
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| {{ModernNote|Replace "''mapname''" with the map's actual name.}}
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| {{ModernWarning|Deleting cubemaps actually deletes all the texture ("[[Valve Texture Format|.vtf]]") files embedded into the map at the time, so it's recommended not to embed custom textures before deleting cubemaps.}}
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| == Extracting cubemaps ==
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| In cases where a map has to be recompiled with minor changes and its built cubemaps vanish as a result, extracting them beforehand will make it not necessary to go through the whole cubemap-building process again until it actually becomes so. To extract its cubemaps with '''BSPZIP''', create a folder that will contain the extracted cubemaps inside the "maps" one, then execute the following command:
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| ..\..\bin\bspzip -extractcubemaps mapname.bsp "foldername"
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| {{ModernNote|Replace "''mapname''" with the map's actual name, and "''foldername''" with the actual name of the folder to extract cubemaps into.}}
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| === Embedding cubemaps ===
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| To make a map use extracted cubemaps, create a text file that will be used by '''BSPZIP''' - the file should be created inside the "maps" folder, and will contain paths to the files to embed into the map file. The file's content should be like this:
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| materials/maps/mapname/c-128_384_64.hdr.vtf
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| '''foldername\materials\maps\mapname\c-128_384_64.hdr.vtf'''
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| materials/maps/mapname/c-128_384_64.vtf
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| '''foldername\materials\maps\mapname\c-128_384_64.vtf'''
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| materials/maps/mapname/c448_-256_64.hdr.vtf
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| '''foldername\materials\maps\mapname\c448_-256_64.hdr.vtf'''
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| materials/maps/mapname/c448_-256_64.vtf
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| '''foldername\materials\maps\mapname\c448_-256_64.vtf'''
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| materials/maps/mapname/cubemapdefault.vtf
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| '''foldername\materials\maps\mapname\cubemapdefault.vtf'''
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| {{ModernNote|Replace "''mapname''" with the map's actual name, the cubemaps' filenames with correct ones, and "''foldername''" with the actual name of the folder that contains the extracted cubemaps.}}
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| A file requires two dedicated lines (paths): the first line represents the path it will use within the map file, while the second one is the actual location of the file to embed into the map file. Relative location paths were used for the example, but they can also be absolute. Once the text file is ready, execute the following command:
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| ..\..\bin\bspzip -addlist mapname.bsp textfile.txt newmapname.bsp
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| {{ModernNote|Replace "''mapname''" with the map's actual name, "''textfile''" with the text file's actual name, and "''newmapname''" with either the map's actual name, or a new name not to overwrite the original file (and instead create a separate one).}}
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| == Renaming a map ==
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| Built cubemaps are saved into a folder within the map file that uses its name; renaming it will cause the cubemaps not to load alongside the map, and therefore it will act as if there were none. To fix that, either delete then rebuild the cubemaps, or extract then embed them back (with their folder's name matching that of the map).
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| == See also ==
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| * [[env_cubemap]]
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| * [[$envmap]]
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| * [[parallax_obb]] - For Parallax Corrected Cubemaps.een
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Note:Archived rest of page history of page Cubemaps
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