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Blender - Alpha is Luminance equivalent
Blender Internal glossy BSDF equivalent?Edging alpha texture viewport BlenderCan particle object color and alpha be controlled by Particle Age (Blender Internal Render)?Why can't non color option produce und normal map and color option produce good normal map in cycles preview?Materials information on a file Blender Internal RenderSaving GIMP's Alpha Color values in BlenderHow to display and use Vertex Color from OBJ modelBlender alpha/transparent texture only works when selectedBlender equivalent of GIMP Levels tool
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Coming from Maya and Arnold there is a very simple selection box in the file read node (image texture equivalent) called Alpha is Luminance which allows to use the luminosity in the RGB values of a file to drive the alpha channel. Is there an equivalent function in Blender 2.8 and Cycles?
blender-render
asked 9 hours ago
FrigstadFilmFrigstadFilm
82 bronze badges
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add a comment |
$begingroup$
Coming from Maya and Arnold there is a very simple selection box in the file read node (image texture equivalent) called Alpha is Luminance which allows to use the luminosity in the RGB values of a file to drive the alpha channel. Is there an equivalent function in Blender 2.8 and Cycles?
blender-render
asked 9 hours ago
FrigstadFilmFrigstadFilm
82 bronze badges
$endgroup$
add a comment |
$begingroup$
Coming from Maya and Arnold there is a very simple selection box in the file read node (image texture equivalent) called Alpha is Luminance which allows to use the luminosity in the RGB values of a file to drive the alpha channel. Is there an equivalent function in Blender 2.8 and Cycles?
blender-render
asked 9 hours ago
FrigstadFilmFrigstadFilm
82 bronze badges
$endgroup$
Coming from Maya and Arnold there is a very simple selection box in the file read node (image texture equivalent) called Alpha is Luminance which allows to use the luminosity in the RGB values of a file to drive the alpha channel. Is there an equivalent function in Blender 2.8 and Cycles?
blender-render
blender-render
asked 9 hours ago
FrigstadFilmFrigstadFilm
82 bronze badges
asked 9 hours ago
FrigstadFilmFrigstadFilm
82 bronze badges
asked 9 hours ago
FrigstadFilmFrigstadFilm
82 bronze badges
asked 9 hours ago
FrigstadFilmFrigstadFilm
82 bronze badges
asked 9 hours ago
FrigstadFilmFrigstadFilm
82 bronze badges
82 bronze badges
add a comment |
add a comment |
1 Answer
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Cycles performs this conversion automatically when a color channel (yellow socket) is a connected to a float/scalar channel (grey socket). As a result, there is no need to have an option on image textures to replace the alpha channel with the merged color channels. You can simply plug the color output directly into the float channel and it will use the luminosity.
answered 7 hours ago
JtheNinjaJtheNinja
7,6031 gold badge21 silver badges38 bronze badges
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Thanks for the reply! Will look further into it, but makes sense for now!
$endgroup$
– FrigstadFilm
7 hours ago
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Be warned, because of the nature of luminance, some of your values will emit beyond their occlusion!
$endgroup$
– troy_s
3 hours ago
add a comment |
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1 Answer
1
active
oldest
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
Cycles performs this conversion automatically when a color channel (yellow socket) is a connected to a float/scalar channel (grey socket). As a result, there is no need to have an option on image textures to replace the alpha channel with the merged color channels. You can simply plug the color output directly into the float channel and it will use the luminosity.
answered 7 hours ago
JtheNinjaJtheNinja
7,6031 gold badge21 silver badges38 bronze badges
$endgroup$
$begingroup$
Thanks for the reply! Will look further into it, but makes sense for now!
$endgroup$
– FrigstadFilm
7 hours ago
$begingroup$
Be warned, because of the nature of luminance, some of your values will emit beyond their occlusion!
$endgroup$
– troy_s
3 hours ago
add a comment |
$begingroup$
Cycles performs this conversion automatically when a color channel (yellow socket) is a connected to a float/scalar channel (grey socket). As a result, there is no need to have an option on image textures to replace the alpha channel with the merged color channels. You can simply plug the color output directly into the float channel and it will use the luminosity.
answered 7 hours ago
JtheNinjaJtheNinja
7,6031 gold badge21 silver badges38 bronze badges
$endgroup$
$begingroup$
Thanks for the reply! Will look further into it, but makes sense for now!
$endgroup$
– FrigstadFilm
7 hours ago
$begingroup$
Be warned, because of the nature of luminance, some of your values will emit beyond their occlusion!
$endgroup$
– troy_s
3 hours ago
add a comment |
$begingroup$
Cycles performs this conversion automatically when a color channel (yellow socket) is a connected to a float/scalar channel (grey socket). As a result, there is no need to have an option on image textures to replace the alpha channel with the merged color channels. You can simply plug the color output directly into the float channel and it will use the luminosity.
answered 7 hours ago
JtheNinjaJtheNinja
7,6031 gold badge21 silver badges38 bronze badges
$endgroup$
Cycles performs this conversion automatically when a color channel (yellow socket) is a connected to a float/scalar channel (grey socket). As a result, there is no need to have an option on image textures to replace the alpha channel with the merged color channels. You can simply plug the color output directly into the float channel and it will use the luminosity.
answered 7 hours ago
JtheNinjaJtheNinja
7,6031 gold badge21 silver badges38 bronze badges
answered 7 hours ago
JtheNinjaJtheNinja
7,6031 gold badge21 silver badges38 bronze badges
answered 7 hours ago
JtheNinjaJtheNinja
7,6031 gold badge21 silver badges38 bronze badges
answered 7 hours ago
JtheNinjaJtheNinja
7,6031 gold badge21 silver badges38 bronze badges
7,6031 gold badge21 silver badges38 bronze badges
$begingroup$
Thanks for the reply! Will look further into it, but makes sense for now!
$endgroup$
– FrigstadFilm
7 hours ago
$begingroup$
Be warned, because of the nature of luminance, some of your values will emit beyond their occlusion!
$endgroup$
– troy_s
3 hours ago
add a comment |
$begingroup$
Thanks for the reply! Will look further into it, but makes sense for now!
$endgroup$
– FrigstadFilm
7 hours ago
$begingroup$
Be warned, because of the nature of luminance, some of your values will emit beyond their occlusion!
$endgroup$
– troy_s
3 hours ago
$begingroup$
Thanks for the reply! Will look further into it, but makes sense for now!
$endgroup$
– FrigstadFilm
7 hours ago
$begingroup$
Thanks for the reply! Will look further into it, but makes sense for now!
$endgroup$
– FrigstadFilm
7 hours ago
$begingroup$
Be warned, because of the nature of luminance, some of your values will emit beyond their occlusion!
$endgroup$
– troy_s
3 hours ago
$begingroup$
Be warned, because of the nature of luminance, some of your values will emit beyond their occlusion!
$endgroup$
– troy_s
3 hours ago
add a comment |
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