Power Fractal Shader v3 - Revision history

Redmaw: Updated Displacement amplitude description.

2022-06-30T19:00:50Z

Updated Displacement amplitude description.

Redmaw: Added descriptions and example images for Animation tab.

2021-09-01T20:35:30Z

Added descriptions and example images for Animation tab.

Redmaw: Added descriptions and example images for Warping Tab.

2021-08-31T23:46:42Z

Added descriptions and example images for Warping Tab.

Redmaw: Added descriptions and example images for Tweak Noise Tab.

2021-08-30T22:14:16Z

Added descriptions and example images for Tweak Noise Tab.

Redmaw: Added descriptions and example images for Displacement tab.

2021-08-29T04:38:01Z

Added descriptions and example images for Displacement tab.

Redmaw: Updated descriptions and added example images for Colour Tab. Legacy videos for Colour Tab added at bottom.

2021-08-27T03:44:02Z

Updated descriptions and added example images for Colour Tab. Legacy videos for Colour Tab added at bottom.

Redmaw: Reformatting Power Fractal Shader V3 wiki page to conform to new layout. WIP. Added descriptions & example images for Overview & Scale Tab.

2021-08-25T23:53:42Z

Reformatting Power Fractal Shader V3 wiki page to conform to new layout. WIP. Added descriptions & example images for Overview & Scale Tab.

Show changes

Jo at 06:16, 21 January 2014

2014-01-21T06:16:50Z

Russe166 at 10:04, 12 January 2014

2014-01-12T10:04:18Z

Russe166 at 15:17, 10 January 2014

2014-01-10T15:17:42Z

@@ Line 195: / Line 195: @@
-*'''Displacement amplitude:'''  This setting determines the amplitude of the displacement. For example, how high and low the maximum terrain features can be when the power fractal is used to displace a terrain.
+*'''Displacement amplitude:'''  This value defines the full range of amplitude in metres a surface can be displaced.  Half of this value displaces in the positive direction and half in the negative direction.  Where the noise pattern is at its highest value (white) the surface is displaced half of the value along its positive vector, and where the noise pattern is at its lowest value (black) the surface is displaced half the value along its negative vector.  For example, with a Displacement amplitude value of 4, a "Y up" flat surface will displace upwards 2 metres where the noise pattern is white, and downwards 2 meteres where the noise pattern is black.
 <ul>
 [[File:PF3_47_DisplacementAmplitude.jpg|none|800px|Displacement amplitude ranging from none to 1000.]]

@@ Line 386: / Line 386: @@
 == Animation Tab ==
-*'''Coming soon'''
+[[File:PF3_06_AnimationTab.png|none|470px|Animation Tab]]
 == Legacy Example Movies ==

@@ Line 334: / Line 334: @@
 *'''Better displacement continuity:'''  When enabled, the shader uses more precise math to remove C1 discontinuities in the chosen Variation method option. A C1 discontinuity is a change in the tangent of a curve, in other words, a kink in the curve.  The shader changes how the smoothing of ridges and gullies is performed in Perlin Ridges, Perlin Billows and Perlin Mix noise flavours to give smoother results.
@@ Line 454: / Line 507: @@
 [[File:Clumpingofvariation.gif]]
 |}
-==Additional tabs for Power Fractal Shader v3==
+{|
+|-
-* [[Power Fractal Shader v3 - Warping Tab]]
 <br /n>

@@ Line 238: / Line 238: @@
 [[File:PF3_55_CoaslineAltitudeNeg100_CoastSmooth.jpg|none|800px|Coastline altitude = -100.  Coastline smoothing from 0 - 40.]]
 </ul>
@@ Line 311: / Line 407: @@
 |}
 ==Additional tabs for Power Fractal Shader v3==
 * [[Power Fractal Shader v3 - Warping Tab]]

@@ Line 175: / Line 175: @@
 <ul>
 [[File:PF3_42_ClampLowColour.jpg|none|800px|The Clamp low colour setting ensures that colour values output by the shader are 0.0 or greater.]]
 </ul>
@@ Line 222: / Line 284: @@
 |}
 ==Additional tabs for Power Fractal Shader v3==
 * [[Power Fractal Shader v3 - Tweak Noise Tab]]

@@ Line 105: / Line 105: @@
 |}
 </ul>
@@ Line 129: / Line 201: @@
 [[File:NoiseStretchV3.gif ]]
 |}
 ==Additional tabs for Power Fractal Shader v3==
 * [[Power Fractal Shader v3 - Displacement Tab]]
@@ Line 140: / Line 231: @@
 * [[Power Fractal Shader v3 - Warping Tab]]
 [[Category:Colour Shader]]
 [[Category:Displacement Shader]]

@@ Line 26: / Line 26: @@
 <u>Scale tab</u><br />
 * '''Feature Scale [any positive value]: ''' The dominant features in the fractal occur at the "feature scale". Features that are smaller than the feature scale have a reduced amplitude (the amplitude continues to diminish as the scale gets smaller, at a rate that depends on the roughness parameters).
-* '''Lead-in Scale [any positive value]: ''' The "lead-in scale" should always be the largest feature that is visible in the texture. With clouds, for example, the lead-in scale allows you to create variations that occur over large areas of the sky, even if you want more prominent features at a smaller scale.
+* '''Lead-in scale [any positive value]: ''' The "lead-in scale" should always be the largest feature that is visible in the texture. With clouds, for example, the lead-in scale allows you to create variations that occur over large areas of the sky, even if you want more prominent features at a smaller scale.
-[[File:LeadInV3Cloud.gif]] [[File:LeadInV3.gif]]
 * '''Noise Octaves: ''' This setting controls the number of layers which are combined to make up the noise pattern. The noise in each additional layer is twice the frequency of the previous layer. This has the effect of adding finer detail to the noise pattern.
+* '''Noise stretch XYZ: ''' This parameter stretches, or scales, the noise pattern.
 * '''Blend by shader:''' Check this to blend (mask) this shader using the specified shader or function node; essentially the other shader or function becomes a mask for this shader. The diffuse colours produced by the blend shader or the values produced by the blend function are interpreted as a blend weight, where 1 is full blend weight and 0 is no blend weight. These weights determine how much this shader's colour and displacement are applied to the input. Values below 0 or above 1 are allowed.
@@ Line 44: / Line 39: @@
 * '''Invert blendshader:''' Check this to invert the values produced by the blend shader specified in the '''Blend by shader''' parameter.
 ==Additional tabs for Power Fractal Shader v3==

@@ Line 1: / Line 1: @@
-[[Image:drex_module_157_image_0.png|center|Power Fractal Shader v3]]
+[[Image:Power_fractal_shader_v3.jpg|center|Power Fractal Shader v3]]
 '''Node Description & Purpose: '''<br />
@@ Line 35: / Line 35: @@
 * '''Noise Octaves: ''' This setting controls the number of layers which are combined to make up the noise pattern. The noise in each additional layer is twice the frequency of the previous layer. This has the effect of adding finer detail to the noise pattern.
 [[File:NoiseOctavesV3.gif]]
 * '''Blend by shader:''' Check this to blend (mask) this shader using the specified shader or function node; essentially the other shader or function becomes a mask for this shader. The diffuse colours produced by the blend shader or the values produced by the blend function are interpreted as a blend weight, where 1 is full blend weight and 0 is no blend weight. These weights determine how much this shader's colour and displacement are applied to the input. Values below 0 or above 1 are allowed.