Basic Shader Processes - Revision history

Eric Lengyel at 03:13, 6 January 2025

2025-01-06T03:13:00Z

← Older revision		Revision as of 03:13, 6 January 2025
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	{{Process\|Terrain Normal 1, 2, 3\|Shader_terrainnormal1.png\|None\|3D vector\|Samples a terrain normal palette. The normal map is specified in the settings for the process.		{{Process\|Terrain Normal 1, 2, 3\|Shader_terrainnormal1.png\|None\|3D vector\|Samples a terrain normal palette. The normal map is specified in the settings for the process.

	If one of these three processes exists, then all three should exist and should use the same normal map. Their outputs should be ~~sent to a~~ Terrain Diffuse Reflection ~~and/or~~ Terrain Specular Reflection ~~process~~.}}		If one of these three processes exists, then all three should exist and should use the same normal map. Their outputs should be used as inputs for the Terrain Diffuse Reflection, Terrain Specular Reflection, and Terrain Environment Output processes.}}
	\|-		\|-
	{{Process\|Impostor Texture\|Shader_impostortexture.png\|None\|RGBA color\|Samples an impostor texture map. The texture map is specified in the settings for the process.		{{Process\|Impostor Texture\|Shader_impostortexture.png\|None\|RGBA color\|Samples an impostor texture map. The texture map is specified in the settings for the process.

Eric Lengyel at 03:09, 6 January 2025

2025-01-06T03:09:44Z

← Older revision		Revision as of 03:09, 6 January 2025
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	{{Process\|Merge 4D\|Shader_merge4d.png\|Scalar '''x''' (required), Scalar '''y''' (required), Scalar '''z''' (required), Scalar '''w''' (required)\|4D vector\|Combines the four scalar inputs '''x''', '''y''', '''z''', and '''w''' into a single 4D vector output.}}		{{Process\|Merge 4D\|Shader_merge4d.png\|Scalar '''x''' (required), Scalar '''y''' (required), Scalar '''z''' (required), Scalar '''w''' (required)\|4D vector\|Combines the four scalar inputs '''x''', '''y''', '''z''', and '''w''' into a single 4D vector output.}}
	\|-		\|-
	{{Process\|Texture Map\|Shader_texturemap.png\|2D or 3D vector '''TEXC''' (required)\|RGBA color\|Samples a texture map using the input texture coordinates '''TEXC'''. The texture map is specified in the settings for the process.		{{Process\|Texture Map\|Shader_texturemap.png\|2D or 3D vector '''TEXC''' (required), scalar '''BIAS''' (optional)\|RGBA color\|Samples a texture map using the input texture coordinates '''TEXC'''. The texture map is specified in the settings for the process.

	The size of the input '''TEXC''' is determined by the type of the texture map. The input is a 2D vector for 2D and Rect textures, and the size is a 3D vector for 3D, Cube, and Array 2D textures.		The size of the input '''TEXC''' is determined by the type of the texture map. The input is a 2D vector for 2D and Rect textures, and the size is a 3D vector for 3D, Cube, and Array 2D textures.

			If the '''BIAS''' input is connected, then it's value is added to the mipmap index calculated by the hardware.

	Note that this process should not be used for normal maps. Use the Normal Map process instead.}}		Note that this process should not be used for normal maps. Use the Normal Map process instead.}}
	\|-		\|-
	{{Process\|Normal Map\|Shader_normalmap.png\|2D vector '''TEXC''' (required)\|3D vector\|Samples a normal map using the input texture coordinates '''TEXC'''. The normal map is specified in the settings for the process.}}		{{Process\|Normal Map\|Shader_normalmap.png\|2D vector '''TEXC''' (required), scalar '''BIAS''' (optional)\|3D vector\|Samples a normal map using the input texture coordinates '''TEXC'''. The normal map is specified in the settings for the process.

			If the '''BIAS''' input is connected, then it's value is added to the mipmap index calculated by the hardware.}}
	\|-		\|-
	{{Process\|Paint Texture\|Shader_painttexture.png\|2D vector '''TEXC''' (required)\|RGBA color\|Samples a paint space texture map using the input texture coordinates '''TEXC'''. The texture map is determined by what paint space is associated with the geometry being rendered. The input vector is normally the output of the Paint Texcoord [[Interpolant Shader Processes\|interpolant process]].}}		{{Process\|Paint Texture\|Shader_painttexture.png\|2D vector '''TEXC''' (required)\|RGBA color\|Samples a paint space texture map using the input texture coordinates '''TEXC'''. The texture map is determined by what paint space is associated with the geometry being rendered. The input vector is normally the output of the Paint Texcoord [[Interpolant Shader Processes\|interpolant process]].}}

Eric Lengyel at 23:29, 5 January 2025

2025-01-05T23:29:35Z

← Older revision		Revision as of 23:29, 5 January 2025
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	See the note about parameter slots under the Constant Scalar process.}}		See the note about parameter slots under the Constant Scalar process.}}
	\|-		\|-
	{{Process\|Constant Color\|Shader_constantcolor.png\|None\|RGBA color\|Outputs a constant color value that is specified in the settings for the process.		{{Process\|Constant Color\|Shader_constantcolor.png\|None\|RGBA color\|Outputs a constant color value that is specified in the settings for the process. This color has components in the range 0 to 1, and it typically represents reflective colors.

			See the note about parameter slots under the Constant Scalar process.}}
			\|-
			{{Process\|Constant Luminance\|Shader_constantluminance.png\|None\|RGBA color\|Outputs a constant luminance value that is specified in the settings for the process. This luminance has unlimited range, and it typically represents lighting or emissive colors.

	See the note about parameter slots under the Constant Scalar process.}}		See the note about parameter slots under the Constant Scalar process.}}

Eric Lengyel: Created page with "This is a list of the basic shader processes that are available in the Shader Editor under the Basic tab. {| {{Table}} {{Tablehead|Process|Description}} |- {{Process|Constant Scalar|Shader_constantscalar.png|None|Scalar|Outputs a constant scalar value that is specified in the settings for the process. A ''parameter slot'' may be specified in the process settings. If the parameter slot is set to “Constant” (the default), then the output of this process c..."

2023-07-15T11:57:27Z

Created page with "This is a list of the basic shader processes that are available in the Shader Editor under the Basic tab. {| {{Table}} {{Tablehead|Process|Description}} |- {{Process|Constant Scalar|Shader_constantscalar.png|None|Scalar|Outputs a constant scalar value that is specified in the settings for the process. A ''parameter slot'' may be specified in the process settings. If the parameter slot is set to “Constant” (the default), then the output of this process c..."

New page

This is a list of the basic shader processes that are available in the [[Shader Editor]] under the Basic tab.

{| {{Table}}
{{Tablehead|Process|Description}}
|-
{{Process|Constant Scalar|Shader_constantscalar.png|None|Scalar|Outputs a constant scalar value that is specified in the settings for the process.

A ''parameter slot'' may be specified in the process settings. If the parameter slot is set to “Constant” (the default), then the output of this process can never be changed while rendering. However, if one of the eight numbered parameter slots is selected, then it is possible to change the value output by this process without actually modifying the shader. For instance, the Set Shader Parameter script method can be used to change the output value of this process, effectively making it a variable parameter of the shader.}}
|-
{{Process|Constant Vector|Shader_constantvector.png|None|4D vector|Outputs a constant vector value that is specified in the settings for the process.

See the note about parameter slots under the Constant Scalar process.}}
|-
{{Process|Constant Color|Shader_constantcolor.png|None|RGBA color|Outputs a constant color value that is specified in the settings for the process.

See the note about parameter slots under the Constant Scalar process.}}
|-
{{Process|Shader Time|Shader_time.png|None|Scalar|Outputs a scalar value in the range [0,1) representing the current shader time. The shader time runs from 0 to 1 over a period of 120 seconds and then repeats by wrapping back to 0.}}
|-
{{Process|Fragment Depth|Shader_fragmentdepth.png|None|Scalar|Outputs a scalar value equal to the depth of the fragment in camera space.}}
|-
{{Process|Primitive Facing|Shader_primitivefacing.png|None|Scalar|Outputs a scalar value that is +1.0 for front-facing primitives and −1.0 for back-facing primitives.}}
|-
{{Process|Merge 2D|Shader_merge2d.png|Scalar '''x''' (required), Scalar '''y''' (required)|2D vector|Combines the two scalar inputs '''x''' and '''y''' into a single 2D vector output.}}
|-
{{Process|Merge 3D|Shader_merge3d.png|Scalar '''x''' (required), Scalar '''y''' (required), Scalar '''z''' (required)|3D vector|Combines the three scalar inputs '''x''', '''y''', and '''z''' into a single 3D vector output.}}
|-
{{Process|Merge 4D|Shader_merge4d.png|Scalar '''x''' (required), Scalar '''y''' (required), Scalar '''z''' (required), Scalar '''w''' (required)|4D vector|Combines the four scalar inputs '''x''', '''y''', '''z''', and '''w''' into a single 4D vector output.}}
|-
{{Process|Texture Map|Shader_texturemap.png|2D or 3D vector '''TEXC''' (required)|RGBA color|Samples a texture map using the input texture coordinates '''TEXC'''. The texture map is specified in the settings for the process.

The size of the input '''TEXC''' is determined by the type of the texture map. The input is a 2D vector for 2D and Rect textures, and the size is a 3D vector for 3D, Cube, and Array 2D textures.

Note that this process should not be used for normal maps. Use the Normal Map process instead.}}
|-
{{Process|Normal Map|Shader_normalmap.png|2D vector '''TEXC''' (required)|3D vector|Samples a normal map using the input texture coordinates '''TEXC'''. The normal map is specified in the settings for the process.}}
|-
{{Process|Paint Texture|Shader_painttexture.png|2D vector '''TEXC''' (required)|RGBA color|Samples a paint space texture map using the input texture coordinates '''TEXC'''. The texture map is determined by what paint space is associated with the geometry being rendered. The input vector is normally the output of the Paint Texcoord [[Interpolant Shader Processes|interpolant process]].}}
|-
{{Process|Terrain Texture|Shader_terraintexture.png|None|RGBA color|Samples a terrain texture palette. The texture map is specified in the settings for the process.

Note that this process should not be used for terrain normal maps. Use the Terrain Normal process instead.}}
|-
{{Process|Terrain Normal 1, 2, 3|Shader_terrainnormal1.png|None|3D vector|Samples a terrain normal palette. The normal map is specified in the settings for the process.

If one of these three processes exists, then all three should exist and should use the same normal map. Their outputs should be sent to a Terrain Diffuse Reflection and/or Terrain Specular Reflection process.}}
|-
{{Process|Impostor Texture|Shader_impostortexture.png|None|RGBA color|Samples an impostor texture map. The texture map is specified in the settings for the process.

Note that this process should not be used for impostor normal maps. Use the Impostor Normal process instead.}}
|-
{{Process|Impostor Normal|Shader_impostornormal.png|None|3D vector|Samples an impostor normal map. The normal map is specified in the settings for the process.}}
|}

== See Also ==

* [[Shader Editor]]
* [[Mathematical Shader Processes]]
* [[Complex Shader Processes]]
* [[Interpolant Shader Processes]]

[[Category:Shaders]]