TrainzOnline - User contributions [en]

M.pbrmetalmasked

2020-09-30T17:35:06Z

Mookidu85100: /* 3ds Max Material Configuration */

[[m.pbrmetalmasked]] is a minor variation on the [[m.pbrmetal]] material. It adds a [[masked alpha]] channel to allow a complex outline to be created without the use of large numbers of [[polygon]]s. All PBR materials are defined using a multitude of texture channels (not just a simple RGB image) which define various aspects of the material on a per-texel basis. One major advantage of this approach is that a single in-game material can be used to display various different real-world materials, rather than requiring multiple separate in-game materials with different parameters. Trainz uses a Metallic/Roughness style PBR workflow.

It should be noted that the "metal" in the name of this material refers to the physical property used in the lighting equations; it does not mean that the material is only appropriate for metallic surfaces.

On some hardware, [[masked alpha]] materials may perform substantially worse than an opaque material. This cost is per-[[fragment]], meaning that it may be suitable to use a masked material on low-[[Level of Detail|LOD]] meshes where polygon count must remain low and where fragment count is naturally low. On higher-LOD meshes, especially where the material is expected to fill a reasonable percentage of the screen, masked materials should be avoided in favor of higher polygon detail, or should be used in conjunction with true opaque materials such that the majority of opaque fragments are filled by the opaque materials and only the complex edge detail is filled by the masked material.

This page describes content format v4.6 and assumes that the FBX file format is used as a data source for any meshes.

=Texture Slots=
The following texture slots are used for this material. All textures should typically have the same dimensions unless they represent a uniform color, however this is not strictly enforced.

==Albedo==
RGB: The [[albedo map]] defines the base color of each texel. The sRGB color space is used.

A: The alpha channel provides a "black and white" [[masked alpha]] channel. Black indicates full transparency, meaning that the [[fragment]] is discarded. White indicates full opacity, meaning that rendering proceeds as per [[m.pbrmetal]]. If the alpha channel is omitted, this material acts exactly as [[m.pbrmetal]] except with lower performance. Note that unlike legacy Trainz materials, PBR materials do not autodetect opacity mode based on the texture in use. The content creator must select the appropriate material for their desired outcome. Runtime texture replacement should not expect to replace an opaque texture with a blended or masked texture and have the material update automatically.

'''Albedo Texture Example'''

[[File:PortalAlbedowAlpha.png|500px]]

Color Channel Separated

[[File:PortalAlbedo.png|500px]]

Alpha Channel Separated

[[File:PortalAlpha.png|500px]]

==Normal==
RGB: Surface [[normal map]]. This defines which way the surface is facing, relative to the interpolated vertex normals. Since this is an XYZ format rather than color data, it should never be modified in Photoshop. Using Photoshop to add a fourth channel or copy/paste smaller textures into a [[texture atlas]] is acceptable. Per-pixel manipulation or use of filters on the "RGB" channels is not acceptable.

A: [[Parallax Occlusion Map|Displacement height]]. 0.0 represents the deepest possible value, while 1.0 represents the shallowest possible value. While it is possible to paint this data in Photoshop, a linear color space must be used, and far superior results will be available through other data sources. The parallax height and the surface normal must be kept in sync, which means that a third-party tool must be used to generate the surface normal from the parallax height if you are painting this map manually.

'''Normal Texture Example with no Alpha Channel (Parallax)'''

[[File:pbrnormalmap1.jpg|border|middle|x200px]]

'''Normal Texture Example with Alpha Channel (Parallax)'''

[[File:pbrnormalwithalpha.jpg|border|middle|x200px]]

==Parameter==
This texture is comprised of four separate channels which each form a separate data element. Linear color space (not sRGB) is used for these channels.

[[File:pbrparametersall.jpg|border|middle|x200px]]

R: Emissive. This causes the texture to have an internal glow, even when no external light is present. Used for phosphors, permanently-lit markings, etc. The glow color is based on the albedo. Note that this glow does not cast light upon surrounding surfaces except via the Bloom post-processing effect.

'''Parameters (Emissive - Red Channel) Texture Example'''

[[File:pbrparametersemissivemap1.jpg|border|middle|x200px]]

G: Roughness. Defines whether the surface reflections are shiny (0.0) or matte (1.0). See the [[Physically Based Rendering|PBR metal workflow]] for details.

'''Parameters (Roughness - Green Channel) Texture Example'''

[[File:pbrparametersroughnessmap1.jpg|border|middle|x200px]]

B: Ambient Occlusion. Defines whether the surface is exposed to ambient lighting conditions (1.0) or affected only by direct lighting (0.0).

'''Parameters (Ambient Occlusion - Blue Channel) Texture Example'''

[[File:pbrparametersambientocclusionmap1.jpg|border|middle|x200px]]

A: Metallicity. Defines whether the surface is metallic (1.0) with the albedo used to colorize reflected light, or dielectric (0.0) with the albedo used to colorize the surface. While intermediate values are not physically accurate, they may be used to emulate subsurfaces which are partially metallic. See the [[Physically Based Rendering|PBR metal workflow]] for details.

'''Parameters (Metallic - Alpha Channel) Texture Example'''

[[File:pbrparametersmetallicmap1.jpg|border|middle|x200px]]

=Examples=

[[File:trainz_material_pbrmetalmasked.jpg|border|middle|x512px]]

Example asset download:

[http://download.trainzportal.com/tutorials/Trainz_Material_-_pbrmetalmasked.cdp Trainz Material - pbrmetalmasked + emissive]

=3ds Max Material Configuration=

'''Texture Assignment'''

[[File:kosl.png]]

=Blender Material Configuration=

The Blender settings for PBRMetalMasked are the same as [[M.pbrmetal#Blender Material Configuration|PBRMetal Blender Settings]] except for the albedo texture where the Image->Use_Alpha should be checked.

[[Category:Material types| ]]
[[Category:Modeling]]
[[Category:Content creation]]

File:Kosl.png

2020-09-30T17:33:38Z

Mookidu85100:

M.pbrmetalmasked

2020-09-30T17:31:38Z

Mookidu85100: /* 3ds Max Material Configuration */

[[m.pbrmetalmasked]] is a minor variation on the [[m.pbrmetal]] material. It adds a [[masked alpha]] channel to allow a complex outline to be created without the use of large numbers of [[polygon]]s. All PBR materials are defined using a multitude of texture channels (not just a simple RGB image) which define various aspects of the material on a per-texel basis. One major advantage of this approach is that a single in-game material can be used to display various different real-world materials, rather than requiring multiple separate in-game materials with different parameters. Trainz uses a Metallic/Roughness style PBR workflow.

It should be noted that the "metal" in the name of this material refers to the physical property used in the lighting equations; it does not mean that the material is only appropriate for metallic surfaces.

On some hardware, [[masked alpha]] materials may perform substantially worse than an opaque material. This cost is per-[[fragment]], meaning that it may be suitable to use a masked material on low-[[Level of Detail|LOD]] meshes where polygon count must remain low and where fragment count is naturally low. On higher-LOD meshes, especially where the material is expected to fill a reasonable percentage of the screen, masked materials should be avoided in favor of higher polygon detail, or should be used in conjunction with true opaque materials such that the majority of opaque fragments are filled by the opaque materials and only the complex edge detail is filled by the masked material.

This page describes content format v4.6 and assumes that the FBX file format is used as a data source for any meshes.

=Texture Slots=
The following texture slots are used for this material. All textures should typically have the same dimensions unless they represent a uniform color, however this is not strictly enforced.

==Albedo==
RGB: The [[albedo map]] defines the base color of each texel. The sRGB color space is used.

A: The alpha channel provides a "black and white" [[masked alpha]] channel. Black indicates full transparency, meaning that the [[fragment]] is discarded. White indicates full opacity, meaning that rendering proceeds as per [[m.pbrmetal]]. If the alpha channel is omitted, this material acts exactly as [[m.pbrmetal]] except with lower performance. Note that unlike legacy Trainz materials, PBR materials do not autodetect opacity mode based on the texture in use. The content creator must select the appropriate material for their desired outcome. Runtime texture replacement should not expect to replace an opaque texture with a blended or masked texture and have the material update automatically.

'''Albedo Texture Example'''

[[File:PortalAlbedowAlpha.png|500px]]

Color Channel Separated

[[File:PortalAlbedo.png|500px]]

Alpha Channel Separated

[[File:PortalAlpha.png|500px]]

==Normal==
RGB: Surface [[normal map]]. This defines which way the surface is facing, relative to the interpolated vertex normals. Since this is an XYZ format rather than color data, it should never be modified in Photoshop. Using Photoshop to add a fourth channel or copy/paste smaller textures into a [[texture atlas]] is acceptable. Per-pixel manipulation or use of filters on the "RGB" channels is not acceptable.

A: [[Parallax Occlusion Map|Displacement height]]. 0.0 represents the deepest possible value, while 1.0 represents the shallowest possible value. While it is possible to paint this data in Photoshop, a linear color space must be used, and far superior results will be available through other data sources. The parallax height and the surface normal must be kept in sync, which means that a third-party tool must be used to generate the surface normal from the parallax height if you are painting this map manually.

'''Normal Texture Example with no Alpha Channel (Parallax)'''

[[File:pbrnormalmap1.jpg|border|middle|x200px]]

'''Normal Texture Example with Alpha Channel (Parallax)'''

[[File:pbrnormalwithalpha.jpg|border|middle|x200px]]

==Parameter==
This texture is comprised of four separate channels which each form a separate data element. Linear color space (not sRGB) is used for these channels.

[[File:pbrparametersall.jpg|border|middle|x200px]]

R: Emissive. This causes the texture to have an internal glow, even when no external light is present. Used for phosphors, permanently-lit markings, etc. The glow color is based on the albedo. Note that this glow does not cast light upon surrounding surfaces except via the Bloom post-processing effect.

'''Parameters (Emissive - Red Channel) Texture Example'''

[[File:pbrparametersemissivemap1.jpg|border|middle|x200px]]

G: Roughness. Defines whether the surface reflections are shiny (0.0) or matte (1.0). See the [[Physically Based Rendering|PBR metal workflow]] for details.

'''Parameters (Roughness - Green Channel) Texture Example'''

[[File:pbrparametersroughnessmap1.jpg|border|middle|x200px]]

B: Ambient Occlusion. Defines whether the surface is exposed to ambient lighting conditions (1.0) or affected only by direct lighting (0.0).

'''Parameters (Ambient Occlusion - Blue Channel) Texture Example'''

[[File:pbrparametersambientocclusionmap1.jpg|border|middle|x200px]]

A: Metallicity. Defines whether the surface is metallic (1.0) with the albedo used to colorize reflected light, or dielectric (0.0) with the albedo used to colorize the surface. While intermediate values are not physically accurate, they may be used to emulate subsurfaces which are partially metallic. See the [[Physically Based Rendering|PBR metal workflow]] for details.

'''Parameters (Metallic - Alpha Channel) Texture Example'''

[[File:pbrparametersmetallicmap1.jpg|border|middle|x200px]]

=Examples=

[[File:trainz_material_pbrmetalmasked.jpg|border|middle|x512px]]

Example asset download:

[http://download.trainzportal.com/tutorials/Trainz_Material_-_pbrmetalmasked.cdp Trainz Material - pbrmetalmasked + emissive]

=3ds Max Material Configuration=

'''Texture Assignment'''

[[File:https://zupimages.net/up/20/40/kosl.png]]

=Blender Material Configuration=

The Blender settings for PBRMetalMasked are the same as [[M.pbrmetal#Blender Material Configuration|PBRMetal Blender Settings]] except for the albedo texture where the Image->Use_Alpha should be checked.

[[Category:Material types| ]]
[[Category:Modeling]]
[[Category:Content creation]]

File:ConfigTextureMaxGlass.jpg

2018-10-05T18:11:10Z

Mookidu85100:

M.glass

2018-10-05T18:10:24Z

Mookidu85100: /* 3ds Max Material Configuration */

[[m.glass]] is a variation on the [[m.pbrmetal]] material. It adds a [[blended alpha]] channel to allow actual glass-like transparencies to be created. All PBR materials are defined using a multitude of texture channels (not just a simple RGB image) which define various aspects of the material on a per-texel basis. One major advantage of this approach is that a single in-game material can be used to display various different real-world materials, rather than requiring multiple separate in-game materials with different parameters. Trainz uses a Metallic/Roughness style PBR workflow.

This material should be used for creating glass and glass-like materials (eg. ice) only. This material has various limitations which make it unsuitable for general use. It is expected that this material will be enhanced over time to improve the glass-like effect, which will further compromise any meshes which attempt to misuse this material for non-glass surfaces. If cutout-style transparency is desired, [[m.pbrmetalmasked]] should be used instead. Foliage should use [[m.pbrmetalmasked]] or [[m.clutter]] with high-resolution geometry and/or texture maps to provide appropriate coverage, rather than attempting to fake coverage using blended alpha.

This page describes content format v4.6 and assumes that the FBX file format is used as a data source for any meshes.

=Texture Slots=
The following texture slots are used for this material. All textures should typically have the same dimensions unless they represent a uniform color, however this is not strictly enforced.

==Albedo==
RGB: The [[albedo map]] defines the base color of each texel. The sRGB color space is used.

'''Albedo Texture Example'''

[[File:Fire albedo.png|border|middle|x200px]]

A: The alpha channel provides a greyscale [[blended alpha]] channel. Black indicates full transparency. White indicates full opacity. Mid levels offer partial transparency. If the alpha channel is omitted, this material becomes fully opaque but still suffers from a number of drawbacks, unlike the truly opaque [[m.pbrmetal]]. Note that unlike legacy Trainz materials, PBR materials do not autodetect opacity mode based on the texture in use. The content creator must select the appropriate material for their desired outcome. Runtime texture replacement should not expect to replace an opaque texture with a blended or masked texture and have the material update automatically.

'''Alpha Texture Example'''

[[File:Fire alpha.png|border|middle|x200px]]

The full texture is available here: [[File:fire.tga]]

==Normal==
RGB: Surface [[normal map]]. This defines which way the surface is facing, relative to the interpolated vertex normals. Since this is an XYZ format rather than color data, it should never be modified in Photoshop. Using Photoshop to add a fourth channel or copy/paste smaller textures into a [[texture atlas]] is acceptable. Per-pixel manipulation or use of filters on the "RGB" channels is not acceptable.

A: [[Parallax Occlusion Map|Displacement height]]. 0.0 represents the deepest possible value, while 1.0 represents the shallowest possible value. While it is possible to paint this data in Photoshop, a linear color space must be used, and far superior results will be available through other data sources. The parallax height and the surface normal must be kept in sync, which means that a third-party tool must be used to generate the surface normal from the parallax height if you are painting this map manually.

'''Normal Texture Example with no Alpha Channel (Parallax)'''

[[File:pbrnormalmap1.jpg|border|middle|x200px]]

'''Normal Texture Example with Alpha Channel (Parallax)'''

[[File:pbrnormalwithalpha.jpg|border|middle|x200px]]

==Parameter==
This texture is comprised of four separate channels which each form a separate data element. Linear color space (not sRGB) is used for these channels.

[[File:pbrparametersall.jpg|border|middle|x200px]]

R: Emissive. This causes the texture to have an internal glow, even when no external light is present. Used for phosphors, permanently-lit markings, etc. The glow color is based on the albedo. Note that this glow does not cast light upon surrounding surfaces except via the Bloom post-processing effect.

'''Parameters (Emissive - Red Channel) Texture Example'''

[[File:pbrparametersemissivemap1.jpg|border|middle|x200px]]

G: Roughness. Defines whether the surface reflections are shiny (0.0) or matte (1.0). See the [[Physically Based Rendering|PBR metal workflow]] for details.

'''Parameters (Roughness - Green Channel) Texture Example'''

[[File:pbrparametersroughnessmap1.jpg|border|middle|x200px]]

B: Ambient Occlusion. Defines whether the surface is exposed to ambient lighting conditions (1.0) or affected only by direct lighting (0.0).

'''Parameters (Ambient Occlusion - Blue Channel) Texture Example'''

[[File:pbrparametersambientocclusionmap1.jpg|border|middle|x200px]]

A: Metallicity. Defines whether the surface is metallic (1.0) with the albedo used to colorize reflected light, or dielectric (0.0) with the albedo used to colorize the surface. While intermediate values are not physically accurate, they may be used to emulate subsurfaces which are partially metallic. See the [[Physically Based Rendering|PBR metal workflow]] for details.

'''Parameters (Metallic - Alpha Channel) Texture Example'''

[[File:pbrparametersmetallicmap1.jpg|border|middle|x200px]]

=Limitations=
As a truly transparent surface, [[m.glass]] offers excellent standalone visual quality but suffers from a number of drawbacks, including:
* Limited or no shadow-casting.
* Limited or no z-buffer writes.
* Limited capability to correctly resolve z-order against itself or other transparent surfaces.
* Lower performance.

These limitations are not considered defining characteristics of the material and may change in exact outcome based on changes to the underlying render technology. Minor rendering artifacts caused by these limitations are considered inevitable. Major artifacts (such as see-through walls or large objects with missing shadows) caused by these limitations are considered a content creation fault (eg. inappropriate use of this material where another material would have given a superior result; inappropriate use of a correct-but-limited asset while route building, etc.) and not an engine bug.

=Examples=

[[File:trainz_material_glass.jpg|border|middle|x512px]]

Example asset download:

[http://download.trainzportal.com/tutorials/Trainz_Material_-_glass.cdp Trainz Material - glass]

=3ds Max Material Configuration=

'''Texture Assignment'''

[[File:ConfigTextureMaxGlass.jpg]]

=Blender Material Configuration=
You must use the Blender Render option in Blender as the Cycles Render doesn't export the texture names associated with the material. The cycles option is still being investigated.

The albedo must have the "Use Alpha" and Influence->Diffuse->Alpha tag ticked. The normal does not require any special settings. The parameters texture must use the Influence->Specular->Hardness tag (checkbox). The value of the hardness is not exported by the Blender FBX exporter. Sample settings are shown below. All textures except the albedo are using png in this example because they do not require an Alpha channel.

[[File:BlenderFBXmglassAlbedo.png|border|middle|x700px]] [[File:BlenderFBXmglassNormal.png|border|middle|x700px]] [[File:BlenderFBXmglassparameter.png|border|middle|x700px]]

[[Category:Material types| ]]
[[Category:Modeling]]
[[Category:Content creation]]