TXMT/Parameters/CategorisedList/stdMatAlpha

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TXMT/Parameters/CategorisedList/stdMatAlpha

There are 6 known member parameters in this group. The following is a simple numeric hierarchy to show how these TXMT parameters work according to these known pathways:

stdMatAlphaBlendMode

0. The parameter to set for activation and deactivation of the Alpha Blending Transparency for a given TXMT file or a given material shader predefined material is

• stdMatAlphaBlendMode

1. If the value is "none", then the Alpha Blending Transparency is disabled. alphaBlendingOn will in turn be set as "false". (NOT in txmt files but in material shaders)

2. If the value is "blend", then the Alpha Blending Transparency is enabled. alphaBlendingOn will in turn be set as "true". (NOT in txmt files but in material shaders)

3. If the value is "additive", then the Additive Alpha Blending Transparency is enabled and it "scales colors against alpha and added to destination".

4. If the value is "addNoSrcAlphaScale", then color and alpha are added to destination.

stdMatAlphaTestEnabled

0. The parameter to set for activation and deactivation of the Alpha Blending Transparency for a given TXMT file or a given material shader predefined material is

• stdMatAlphaTestEnabled

1. If the value is "true"/"1", then to "turn this on for mask surfaces"

2. If the value is "false"/"0", then not to "turn this on for mask surfaces"

stdMatAlphaMultiplier

• "Straight multiplier on alpha channel"
• An essential factor with or without a potential co-factor stdMatUntexturedDiffAlpha for alpha or alpha scale.

stdMatAlphaRefValue

• "For mask surfaces, threshold value for alpha"

stdMatUntexturedDiffAlpha

• The value of the alpha channel when the base texture is used, so it affects the whole transparency of the base texture.
• A potential co-factor with stdMatAlphaMultiplier for alpha or alpha scale.

Source Reference

• UnlitTextureAlphaShaders

define UnlitTextureAlpha()
   material
      create UnlitTextureAlphaShaders()
   end
enddef

define UnlitTextureAlphaShaders()
   set stdMatLightingEnabled false
   set stdMatAlphaBlendMode blend
   setf stdMatAlphaMultiplier (($stdMatDiffCoef).w)
   setb stdMatBaseTextureEnabled true
   setb stdMatSpecMaskTextureEnabled  false
   setb stdMatNormalMapTextureEnabled false
   set  stdMatDiffCoef                ($stdMatDiffCoef * ($deprecatedStdMatInvDiffuseCoeffMultiplier).xxx)
   create StandardShaders()
enddef

• AdditiveTextureBlendShaders

define AdditiveTextureBlend()
   material
      create AdditiveTextureBlendShaders()
   end
enddef

define AdditiveTextureBlendShaders()
   set stdMatLightingEnabled false
   set stdMatAlphaBlendMode additive
   setf stdMatAlphaMultiplier ($blendStrength)
   setb stdMatBaseTextureEnabled true
   setb stdMatSpecMaskTextureEnabled  false
   setb stdMatNormalMapTextureEnabled false
   set  stdMatDiffCoef                ($stdMatDiffCoef * ($deprecatedStdMatInvDiffuseCoeffMultiplier).xxx)
   create StandardShaders()
enddef