Migrated textures section of wiki.
Ryan Tucker
6 years ago
parent
f4146d0079
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380384ff39
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parse_cmake
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sphinx
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sphinx>=1.7.0
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@ -1,11 +1,9 @@
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Welcome to OpenMW's Documentation!
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==================================
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Sections
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--------
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.. toctree::
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:maxdepth: 3
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:caption: Table of Contents
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:maxdepth: 3
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manuals/index
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reference/index
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manuals/index
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reference/index
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###############
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Common Problems
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###############
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ERROR: Unknown fallback name: FontColor_color_header
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####################################################
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:Symptoms:
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OpenMW crashes at startup with
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``ERROR: Unknown fallback name: FontColor_color_header``
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message at the end of ``openmw.log``, located `here </docs/source/reference/modding/paths>`_.
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:Cause:
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The OpenMW `configuration file </docs/source/reference/modding/paths>`_ ``openmw.cfg``
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is severely lacking and missing fallback values
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because "Settings Importer" was not run correctly.
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:Fix:
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Re-run "Settings Importer" from the OpenMW launcher.
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Installing game files via Steam on macOS: DISK WRITE ERROR
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##########################################################
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:Symptoms:
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Steam stages the download for Morrowind, but does not proceed.
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The download will read "Paused: DISK WRITE ERROR".
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:Cause:
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The OpenMW `configuration file </docs/source/reference/modding/paths>`_ ``openmw.cfg``
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is severely lacking and missing fallback values
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because "Settings Importer" was not run correctly.
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:Fix:
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Open appmanifest_22320.acf in your favorite text editor.
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Locate or create an entry under the "StateFlags" entry titled "installdir"
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and give it the value "Morrowind".
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Your file should now look something like this::
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"AppState"
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{
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"appid" "22320"
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"Universe" "1"
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"name" "The Elder Scrolls III: Morrowind"
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"StateFlags" "4"
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"installdir" "Morrowind"
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[other entries]
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}
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Restart the Steam client. The download should now proceed.
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@ -1,5 +1,126 @@
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==================
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##################
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Install Game Files
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==================
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##################
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OpenMW is a complete game engine that can either run `Morrowind`_
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or original projects created with OpenMW-CS, such as `Example Suite`_.
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Morrowind
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#########
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Running the Morrowind Installation Wizard
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=========================================
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#. Launch the OpenMW Launcher
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#. Launch the Installation Wizard
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.. note::
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If you are prompted with an error message stating
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"Could not find the Data Files location,"
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click the "Run Installation Wizard" button.
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.. note::
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If you arrive at the main screen, click the "Settings" tab,
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and then click the "Run Installation Wizard" button.
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#. Follow further instructions below
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to install Morrowind from either a retail CD or an existing installation.
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- **Morrowind (from retail CD)**
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#. Make sure that the retail CD is in your computer's CD/DVD drive
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and the Installation Wizard is running.
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#. On the "Select Installation Method" screen of the Installation Wizard,
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choose "Install Morrowind to a New Location" and click the "Next" button.
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#. Choose a location to install Morrowind to your hard drive
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(or accept the suggested location) and click the "Next" button.
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#. Select your preferred language for the installation
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and click the "Next" button
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#. Select which official expansions (Tribunal or Bloodmoon) should be installed.
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For best results, it is recommended to have both expansions installed.
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#. Click the "Install" button.
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- **Morrowind (from existing installation)**
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#. On the "Select Installation Method" screen of the Installation Wizard,
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choose "Select an existing Morrowind installation" and click the "Next" button
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#. Select an installation. If nothing is detected, click browse.
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#. Navigate to the directory containing the file ``Morrowind.esm`` and select that file.
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#. You will be asked if you wish to import settings from ``Morrowind.ini``.
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Select "Import", otherwise OpenMW will not work.
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(You do not need to check the box "Include selected masters and plugins").
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#. The OpenMW launcher window should now open.
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Switch to the "Data Files" tab and check the box to the left of ``Morrowind.esm``.
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#. You are now ready to play!
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Installing Morrowind
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====================
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-----------------
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Retail CD and GOG
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-----------------
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Windows users can run the installer if they haven't already.
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By default, both Bethesda's official installer on the retail CD
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and the GOG installer install to ``C:\Program Files\Bethesda Softworks\Morrowind``.
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You will find ``Morrowind.esm`` there.
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Users of other platforms running Wine, will find it at
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``~/.wine/drive_c/Program Files/Bethesda Softworks/Morrowind``
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-----
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Steam
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-----
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Windows
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-------
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Windows users can download Morrowind through Steam.
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Afterwards, you can point OpenMW to the Steam install location at
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``C:\Program Files\Steam\SteamApps\common\Morrowind\Data Files\``
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and find ``Morrowind.esm`` there.
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macOS
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-----
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If you are running macOS, you can also download Morrowind through Steam:
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#. Navigate to ``/Users/YOUR_USERNAME_HERE/Library/Application Support/Steam/steamapps/``
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#. Create a file called ``appmanifest_22320.acf``
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(the number is based on its `Steam App ID <https://steamdb.info/app/22320/>`_).
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If using TextEdit,
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make sure that your document is in plain text mode by going to the menu bar
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and choosing "Format" -> "Make Plain Text".
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Also, ensure that it's not named with the extension ``.acf.txt``.
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Add the following into that file::
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"AppState"
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{
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"AppID" "22320"
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"Universe" "1"
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"StateFlags" "1026"
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"installdir" "The Elder Scrolls III - Morrowind"
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}
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#. Launch the Steam client and let it download. You can then find ``Morrowind.esm`` at
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``~/Library/Application Support/Steam/steamapps/common/The Elder Scrolls III - Morrowind/Data Files/``
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Wine
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----
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Users of other platforms running Wine can run Steam within it
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and find ``Morrowind.esm`` at
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``~/.wine/drive_c/Program Files/Steam/SteamApps/common/Morrowind/Data Files/``.
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Example Suite
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#############
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Example Suite is a demo showing the capabilities of the OpenMW engine.
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At this time, it requires Morrowind to be installed to run,
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but does not use any assets from it.
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In the future, it will be possible to run without installing Morrowind first.
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#. `Install Morrowind <Installing Morrowind_>`_
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#. `Download the latest version <https://github.com/OpenMW/example-suite/releases>`_
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#. Follow the platform-specific instructions in the zip file's ``Installation.md`` file.
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Coming Soon...
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@ -1,8 +1,9 @@
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##################
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Reference Material
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==================
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##################
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.. toctree::
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:maxdepth: 2
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:maxdepth: 2
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modding/index
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documentationHowTo
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modding/index
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documentationHowTo
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######################
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OpenMW Texture Modding
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######################
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Although texture modding requires external tools not supported by the OpenMW team,
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adding and modifying textures is an important part of content creation.
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Therefore, we've included the following in hopes of helping modders transition
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to texture modding in OpenMW.
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.. toctree::
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:caption: Table of Contents
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:maxdepth: 2
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texture-basics
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convert-bump-mapped-mods
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native-mesh-format
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##################
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Native Mesh Format
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##################
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This article explains how to export a model from Blender to OpenMW using the OSG model format.
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Starting with OpenMW version 0.38 we can utilize the OSG native model format.
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The OSG model format doesn't yet support all the features that NIF's support,
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but works for basic models. For more details on the format, refer to
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`this forum post <https://forum.openmw.org/viewtopic.php?f=20&t=2949&p=35514#p35514>`_.
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Previously, NIF files were the only way to get models into the game.
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Unfortunately, the NIF format is proprietary, bloated,
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and the available exporters are not in great shape.
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For example, the Blender NIF exporter currently only works with the very old Blender 2.49.
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Prerequisites
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#############
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- OpenMW 0.38 or later
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- Blender 2.60 or later
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- OSG exporter add-on for Blender
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- A Blender model you would like to export
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Installing the exporter
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#######################
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#. Download the
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`OSG export script
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<https://github.com/openmw/osgexport/blob/release/blender-2.5/build/osgexport-0.14.2.zip?raw=true>`_
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#. Open Blender and go to File -> User Preferences
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#. Select Add-ons -> Install from File, then select the downloaded `.zip`
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#. Enter "osg" into the search bar, then tick the checkbox next to the add-on to enable it
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#. Now click Save user setting so the exporter stays enabled when you re-start Blender
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You can now export your models using the OSG model (osgt) entry in the File -> Export menu.
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Model's location
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################
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The model needs to be at 0,0,0 coordinates in Blender,
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as this is where its origin will always be when exported.
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If the model is offset from 0,0,0 in Blender,
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it will be offset from its origin in the exported file as well.
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Model's rotation
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################
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- Blender's Z axis is up axis in OpenMW
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- Blender's Y axis is front axis in OpenMW
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- Blender's X axis is left-right axis in OpenMW
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- Visual rotation is taken into account when exporting
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Model's scale
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#############
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Blender:OpenMW model scale is 70:1,
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which means 70 Blender units (BU) translate into 1m in OpenMW.
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Using this scale, any models you make will fit with the existing ones.
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The scale does not need to be applied,
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the exporter will always use the visual scale of the model.
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However, 70 is an odd number to work with so here's an alternative workflow:
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- In Blender, use a scale of 1BU = 1m which is a nice scale and ratio to work with.
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Have all models use this scale.
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- Before exporting a model, scale it up by a factor of 70.
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- After exporting, undo the model's scale change and continue working as normal
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(in the future a preferable way would be to apply the scale through the exporter)
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Putting the model in-game
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#########################
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Place the exported model in the Meshes sub-folder of a data folder recognized by the game,
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e.g. the Morrowind Data Files folder, or the local data folder.
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Place all required textures in the Textures sub-folder.
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Now start OpenMW-CS, create a new addon file
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and you should see your mesh in the Assets -> Meshes table.
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Go ahead and make some object use your mesh.
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You can now preview by right clicking on the object -> Preview to see what the mesh will look like.
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Converting the model to binary
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##############################
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When the model behaves to our liking,
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we can think about converting it from the "osgt" text format to the "osgb" binary format
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so that it's smaller in size - and thus faster to load.
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To do this, simply invoke the osgconv tool.
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This tool should be included with your distribution of OpensceneGraph.
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`osgconv -O WriteImageHint=UseExternal model.osgt model.osgb`
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Of course, you can convert the binary model back to text format as well:
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`osgconv -O WriteImageHint=UseExternal model.osgb model.osgt`
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Note the use of `-O WriteHint=UseExternal` option.
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Enabling this option is desirable because it keeps the textures as external file references,
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rather than embedding the textures within the model file.
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Embedded textures have disadvantages such as being hard to inspect,
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and impossible to share between model files.
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Using shaders/normal maps
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#########################
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See :ref:`OSG Native Files`
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Conclusion
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##########
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These are the basics of getting a textured, static model from Blender into the game.
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In the future, we will want a way to add texture animations,
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skeletal animations, separate collision shapes,
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and some other features that are currently only available via NIF files.
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We will likely add these features to the native OSG format after OpenMW 1.0.
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@ -0,0 +1,171 @@
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autosectionlabel_prefix_document = True
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######################
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Texture Modding Basics
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######################
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OpenMW supports new texture mapping techniques
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that were not available in the vanilla Morrowind engine.
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`Normal mapping`_ is a technique used to fake lighting of bumps,
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cracks and other small details.
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`Specular mapping`_ is used to vary the shininess/specularity along the surface of an object.
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The prerequisite to using these techniques are
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`shaders <https://en.wikipedia.org/wiki/Shader>`_.
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OpenMW automatically uses shaders for objects with these mapping techniques.
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Normal Mapping
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##############
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To plug in a normal map, you can edit the NIF mesh file(s) using NifSkope
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and assign the normal map texture to the BumpTexture slot in the NiTexturingProperty.
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.. note::
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While the original Morrowind engine does support the BumpTexture slot,
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it uses a strange form of normal mapping that applies to an environment map.
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OpenMW uses standard normal mapping, which can achieve much better results.
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Unfortunately, this difference can result in incompatibilities.
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Some mods
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(e.g. `Redoran Bump Mapped <http://www.nexusmods.com/morrowind/mods/42406/?>`_)
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look much darker compared to the vanilla engine and will have to be recalibrated.
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Specular Mapping
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################
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The RGB channels of the specular map are used as the specular color.
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The alpha channel specifies shininess in range [0, 255].
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If a specular map is used, it will override the shininess and specular color
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set in the NiMaterialProperty / osg::Material.
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NIF files do not support specular maps.
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In order to use them anyway, see the next section.
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Automatic Use
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#############
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In addition to editing mesh files,
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there is another way of plugging in these texture maps.
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Simply create the textures with appropriate naming convention
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(e.g. when the base texture is called foo.dds,
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the normal map would have to be called foo_n.dds).
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To enable this automatic use based on filename pattern,
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you will have to add the following to your
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`settings.cfg </source/reference/modding/paths>`_ file::
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[Shaders]
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auto use object normal maps = true
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auto use object specular maps = true
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normal map pattern = _n
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normal height map pattern = _nh
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specular map pattern = _spec
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Additionally, a normal map with the `_nh` pattern enables
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the use of the normal map's alpha channel as height information.
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This can be used by a `parallax mapping <https://en.wikipedia.org/wiki/Parallax_mapping>`_
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shader to offset the texture depending on the viewing angle and height,
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creating a fake 3D effect.
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The above settings are not enabled by default to prevent incompatibilities
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with mods that may be inadvertently using these naming schemes.
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On the topic of shader settings,
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you may be interested in these three settings as well: :ref:`force shaders`,
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:ref:`force per pixel lighting`, and :ref:`clamp lighting`.
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In particular, `clamp lighting = false` makes normal maps look much better!
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Terrain
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#######
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The terrain shader also supports normal, normal-height and specular maps,
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with one difference compared to objects:
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the specular value must be packed into the layer texture's alpha channel.
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For example, if you wanted to add specular mapping to a terrain layer called rock.dds,
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you would copy this texture to a new file called rock_diffusespec.dds,
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and then edit its alpha channel to set the specular intensity.
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The relevant settings are::
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[Shaders]
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auto use terrain normal maps = true
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auto use terrain specular maps = true
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terrain specular map pattern = _diffusespec
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# Also used for terrain normal maps
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normal map pattern = _n
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normal height map pattern = _nh
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OSG native files
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################
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OpenMW supports all the above shader features for meshes in the Native Mesh Format.
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To have the shader generator recognize specific textures,
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the `osg::Texture2D` must be named appropriately.
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Available texture types are the following (most of which also have NIF equivalents):
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:diffuseMap: base texture
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:normalMap: normal map, as described earlier
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:normalHeightMap: same as normal map, but including height information in alpha channel to be used for parallax effects
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:emissiveMap: controls the material's emission, useful for objects that glow in the dark
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:darkMap: multiplied onto the base texture
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:detailMap: multiplied by 2 and then multiplied onto the base texture
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:envMap: spherical environment map
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:specularMap: specular map, as described earlier
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The first texture unit automatically acts as diffuseMap if no recognized type is specified.
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Example: `.osgt` file excerpt of a normal mapped mesh::
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TextureModeList 2 {
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Data 1 {
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GL_TEXTURE_2D ON
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}
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Data 1 {
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GL_TEXTURE_2D ON
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}
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}
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TextureAttributeList 2 {
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Data 1 {
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osg::Texture2D {
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UniqueID 37
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Name "diffuseMap"
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WRAP_S REPEAT
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WRAP_T REPEAT
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WRAP_R REPEAT
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MIN_FILTER LINEAR_MIPMAP_LINEAR
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MAG_FILTER LINEAR
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Image TRUE {
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UniqueID 60
|
||||
FileName "textures/BuddhaStatue_Dif.jpg"
|
||||
WriteHint 2 2
|
||||
}
|
||||
}
|
||||
Value OFF
|
||||
}
|
||||
Data 1 {
|
||||
osg::Texture2D {
|
||||
UniqueID 38
|
||||
Name "normalMap"
|
||||
WRAP_S REPEAT
|
||||
WRAP_T REPEAT
|
||||
WRAP_R REPEAT
|
||||
MIN_FILTER LINEAR_MIPMAP_LINEAR
|
||||
MAG_FILTER LINEAR
|
||||
Image TRUE {
|
||||
UniqueID 61
|
||||
FileName "textures/BuddhaStatue_Nor.jpg"
|
||||
WriteHint 2 2
|
||||
}
|
||||
}
|
||||
Value OFF
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue