Blendtable (DEF): Difference between revisions
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{{Under construction}} | |||
Loads a blend table from a raw image file. | <span {{code}}>'''blendtable''' <blendtable> { [...] }</span> | ||
Loads a blend table from a [[raw image file]]. | |||
The image file MUST contain a 256 color table of its own. Each pixel will have their matching color in the table converted in the blend table. | The image file MUST contain a 256 color table of its own. Each pixel will have their matching color in the table converted in the blend table. | ||
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== Tokens == | == Tokens == | ||
'''raw''' { [...] } | <span {{code}}>'''raw''' { [...] } | ||
DESCRIPTION | |||
:: | :: <span {{code}}>'''file''' <filename></span> | ||
:: DESCRIPTION | |||
:: ''' | :: <span {{code}}>'''offset''' <value></span> | ||
:: | :: DESCRIPTION | ||
<span {{code}}>'''glblend''' { [...] }</span> | |||
DESCRIPTION | |||
:::: | :: <span {{code}}>'''forward''' { [...] }</span><br /> | ||
:: <span {{code}}>'''reverse''' { [...] }</span><br /> | |||
:: <span {{code}}>'''both''' { [...] }</span> | |||
:: | :: DESCRIPTION | ||
:::: dst | :::: <span {{code}}>'''src''' <factor></span> (or '''sfactor''' / '''top''')<br /> | ||
:::: <span {{code}}>'''dst''' <factor></span> (or '''dfactor''' / '''bottom''') | |||
:::: | :::: DESCRIPTION | ||
:::: | :::: See [[#Factors|below]]. | ||
:::: alpha | :::: <span {{code}}>'''alpha''' <value></span> | ||
:::: DESCRIPTION | |||
undef | <span {{code}}>'''copy''' <blendtable></span> | ||
DESCRIPTION | |||
<span {{code}}>'''undef'''</span> | |||
DESCRIPTION | |||
== Factors == | == Factors == | ||
[[File:GL blend chart.jpg|thumb|right|Chart explaining the combination of blend modes available in OpenGL.]] | [[File:GL blend chart.jpg|thumb|200px|right|Chart explaining the combination of blend modes available in OpenGL.]] | ||
* ZERO | * ZERO | ||
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blendtable 1 { raw { file "blend.raw" offset 65536 } } | blendtable 1 { raw { file "blend.raw" offset 65536 } } | ||
blendtable 2 { raw { file "blend.raw" offset 131072 } } | blendtable 2 { raw { file "blend.raw" offset 131072 } } | ||
[[Category:DEF commands]] | [[Category:DEF commands]] | ||
Latest revision as of 14:10, 22 March 2021
 |
This page is under construction. Please help review and edit this page. |
blendtable <blendtable> { [...] }
Loads a blend table from a raw image file.
The image file MUST contain a 256 color table of its own. Each pixel will have their matching color in the table converted in the blend table.
A single image file may contain multiple base palettes, and offset can used to locate it.
The first ID is reserved to the 33% transparency.
See also numalphatables.
Tokens
raw { [...] }
DESCRIPTION
- file <filename>
- DESCRIPTION
- offset <value>
- DESCRIPTION
glblend { [...] }
DESCRIPTION
- forward { [...] }
- reverse { [...] }
- both { [...] }
- forward { [...] }
- DESCRIPTION
- src <factor> (or sfactor / top)
- dst <factor> (or dfactor / bottom)
- src <factor> (or sfactor / top)
- DESCRIPTION
- See below.
- alpha <value>
- DESCRIPTION
copy <blendtable>
DESCRIPTION
undef
DESCRIPTION
Factors
- ZERO
- ONE
- SRC_COLOR
- ONE_MINUS_SRC_COLOR
- SRC_ALPHA
- ONE_MINUS_SRC_ALPHA
- DST_ALPHA
- ONE_MINUS_DST_ALPHA
- DST_COLOR
- ONE_MINUS_DST_COLOR
Examples
The following PNG image contains the blend table in Duke Nukem 3D v1.5:
This example will load 3 blend tables in the same file:
blendtable 0 { raw { file "blend.raw" } }
blendtable 1 { raw { file "blend.raw" offset 65536 } }
blendtable 2 { raw { file "blend.raw" offset 131072 } }