shader_transparent_chicago_extended

Edit

Transparent chicago extended shaders are essentially identical to shader_transparent_chicago, but have an additional 2-stage block used when video hardware does not support more than 2 maps in a shader (which can be simulated with arguments). There is no reason to use this shader type over shader_transparent_chicago on modern systems.

See shader_transparent_chicago for more documentation.

Structure and fields

This tag inherits fields from shader which are not shown here. See the parent's page for more information. The following information is unique to the shader_transparent_chicago_extended tag.

Field Type Comments

numeric counter limit u8

shader transparent chicago extended flags bitfield(8)

Flag	Mask	Comments
alpha tested	`0x1`
decal	`0x2`
two sided	`0x4`
first map is in screenspace	`0x8`
draw before water	`0x10`
ignore effect	`0x20`
scale first map with distance	`0x40`
numeric	`0x80`

first map type enum

Option	Value	Comments
2d map	`0x0`
first map is reflection cube map	`0x1`
first map is object centered cube map	`0x2`
first map is viewer centered cube map	`0x3`

framebuffer blend function enum

Option	Value	Comments
alpha blend	`0x0`
multiply	`0x1`
double multiply	`0x2`
add	`0x3`
subtract	`0x4`
component min	`0x5`
component max	`0x6`
alpha multiply add	`0x7`

framebuffer fade mode enum

Option	Value	Comments
none	`0x0`
fade when perpendicular	`0x1`
fade when parallel	`0x2`

framebuffer fade source enum

Option	Value	Comments
none	`0x0`
a out	`0x1`
b out	`0x2`
c out	`0x3`
d out	`0x4`

pad(2)

lens flare spacing f32 (world units)

lens flare

Reference^?

lens_flare

extra layers

Block^?

Warning: Using a shader with extra layers on an object with transparent self occlusion enabled causes Sapien to crash.

Field	Type	Comments
shader	`Reference^?` shader

maps 4 stage

Block^?

Maximum: 4

Field Type Comments

flags bitfield(16)

Flag	Mask	Comments
unfiltered	`0x1`
alpha replicate	`0x2`
u clamped	`0x4`
v clamped	`0x8`

pad(2)

pad(40)

color function enum

Option	Value	Comments
current	`0x0`
next map	`0x1`
multiply	`0x2`
double multiply	`0x3`
add	`0x4`
add signed current	`0x5`
add signed next map	`0x6`
subtract current	`0x7`
subtract next map	`0x8`
blend current alpha	`0x9`
blend current alpha inverse	`0xa`
blend next map alpha	`0xb`
blend next map alpha inverse	`0xc`

alpha function enum

Option	Value	Comments
current	`0x0`
next map	`0x1`
multiply	`0x2`
double multiply	`0x3`
add	`0x4`
add signed current	`0x5`
add signed next map	`0x6`
subtract current	`0x7`
subtract next map	`0x8`
blend current alpha	`0x9`
blend current alpha inverse	`0xa`
blend next map alpha	`0xb`
blend next map alpha inverse	`0xc`

pad(36)

map u scale

f32

Default value: 1

map v scale

f32

Default value: 1

map u offset f32

map v offset f32

map rotation f32

mipmap bias

Fraction: f32

Maximum: 1

map

Reference^?

bitmap

pad(40)

u animation source enum

Option	Value	Comments
none	`0x0`
a out	`0x1`
b out	`0x2`
c out	`0x3`
d out	`0x4`

u animation function enum

Option	Value	Comments
one	`0x0`
zero	`0x1`
cosine	`0x2`
cosine variable period	`0x3`
diagonal wave	`0x4`
diagonal wave variable period	`0x5`
slide	`0x6`
slide variable period	`0x7`
noise	`0x8`
jitter	`0x9`
wander	`0xa`
spark	`0xb`

u animation period

f32 (seconds)

Default value: 1

u animation phase f32

u animation scale

f32 (world units)

Default value: 1

v animation source enum

Option	Value	Comments
none	`0x0`
a out	`0x1`
b out	`0x2`
c out	`0x3`
d out	`0x4`

v animation function enum

Option	Value	Comments
one	`0x0`
zero	`0x1`
cosine	`0x2`
cosine variable period	`0x3`
diagonal wave	`0x4`
diagonal wave variable period	`0x5`
slide	`0x6`
slide variable period	`0x7`
noise	`0x8`
jitter	`0x9`
wander	`0xa`
spark	`0xb`

v animation period

f32 (seconds)

Default value: 1

v animation phase f32

v animation scale

f32 (world units)

Default value: 1

rotation animation source enum

Option	Value	Comments
none	`0x0`
a out	`0x1`
b out	`0x2`
c out	`0x3`
d out	`0x4`

rotation animation function enum

Option	Value	Comments
one	`0x0`
zero	`0x1`
cosine	`0x2`
cosine variable period	`0x3`
diagonal wave	`0x4`
diagonal wave variable period	`0x5`
slide	`0x6`
slide variable period	`0x7`
noise	`0x8`
jitter	`0x9`
wander	`0xa`
spark	`0xb`

rotation animation period

f32 (seconds)

Default value: 1

rotation animation phase f32

rotation animation scale

f32 (degrees)

Default value: 360

rotation animation center

Point2D (2)

x: f32
y: f32

maps 2 stage

Block^?

This block is used instead of maps 4 stage on older video hardware.

Maximum: 2

Field Type Comments

flags bitfield(16)

Flag	Mask	Comments
unfiltered	`0x1`
alpha replicate	`0x2`
u clamped	`0x4`
v clamped	`0x8`

pad(2)

pad(40)

color function enum

Option	Value	Comments
current	`0x0`
next map	`0x1`
multiply	`0x2`
double multiply	`0x3`
add	`0x4`
add signed current	`0x5`
add signed next map	`0x6`
subtract current	`0x7`
subtract next map	`0x8`
blend current alpha	`0x9`
blend current alpha inverse	`0xa`
blend next map alpha	`0xb`
blend next map alpha inverse	`0xc`

alpha function enum

Option	Value	Comments
current	`0x0`
next map	`0x1`
multiply	`0x2`
double multiply	`0x3`
add	`0x4`
add signed current	`0x5`
add signed next map	`0x6`
subtract current	`0x7`
subtract next map	`0x8`
blend current alpha	`0x9`
blend current alpha inverse	`0xa`
blend next map alpha	`0xb`
blend next map alpha inverse	`0xc`

pad(36)

map u scale

f32

Default value: 1

map v scale

f32

Default value: 1

map u offset f32

map v offset f32

map rotation f32

mipmap bias

Fraction: f32

Maximum: 1

map

Reference^?

bitmap

pad(40)

u animation source enum

Option	Value	Comments
none	`0x0`
a out	`0x1`
b out	`0x2`
c out	`0x3`
d out	`0x4`

u animation function enum

Option	Value	Comments
one	`0x0`
zero	`0x1`
cosine	`0x2`
cosine variable period	`0x3`
diagonal wave	`0x4`
diagonal wave variable period	`0x5`
slide	`0x6`
slide variable period	`0x7`
noise	`0x8`
jitter	`0x9`
wander	`0xa`
spark	`0xb`

u animation period

f32 (seconds)

Default value: 1

u animation phase f32

u animation scale

f32 (world units)

Default value: 1

v animation source enum

Option	Value	Comments
none	`0x0`
a out	`0x1`
b out	`0x2`
c out	`0x3`
d out	`0x4`

v animation function enum

Option	Value	Comments
one	`0x0`
zero	`0x1`
cosine	`0x2`
cosine variable period	`0x3`
diagonal wave	`0x4`
diagonal wave variable period	`0x5`
slide	`0x6`
slide variable period	`0x7`
noise	`0x8`
jitter	`0x9`
wander	`0xa`
spark	`0xb`

v animation period

f32 (seconds)

Default value: 1

v animation phase f32

v animation scale

f32 (world units)

Default value: 1

rotation animation source enum

Option	Value	Comments
none	`0x0`
a out	`0x1`
b out	`0x2`
c out	`0x3`
d out	`0x4`

rotation animation function enum

Option	Value	Comments
one	`0x0`
zero	`0x1`
cosine	`0x2`
cosine variable period	`0x3`
diagonal wave	`0x4`
diagonal wave variable period	`0x5`
slide	`0x6`
slide variable period	`0x7`
noise	`0x8`
jitter	`0x9`
wander	`0xa`
spark	`0xb`

rotation animation period

f32 (seconds)

Default value: 1

rotation animation phase f32

rotation animation scale

f32 (degrees)

Default value: 360

rotation animation center

Point2D (2)

x: f32
y: f32

extra flags bitfield(32)

Flag	Mask	Comments
don't fade active camouflage	`0x1`
numeric countdown timer	`0x2`

pad(8)

This information was partially generated using Invader tag definitions.

Acknowledgements

Thanks to the following individuals for their research or contributions to this topic:

Jakey (Explaining purpose of this tag)
Kavawuvi (Invader tag definitions)
MosesOfEgypt (Tag structure research)