Blendtable (DEF)

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 { [...] }

Description.

src <factor> dst <factor>

(or sfactor / top) (or dfactor / bottom)

Description.

See below.

alpha <value>

Description.

copy <>

Description.

undef <>

Description.

Factors

Chart explaining the combination of blend modes available in OpenGL.

• 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 } }