Graphics Reference
In-Depth Information
Relational and equality operators (<, <=, >, >=, ==, !=) are defined to
produce scalar boolean results. For vector results, use the following built-
in functions. In Table B-7, “bvec” is a placeholder for one of
bvec2
,
bvec3
, or
bvec4
; “ivec” is a placeholder for one of
ivec2
,
ivec3
, or
ivec4
; “uvec” is a placeholder for
uvec2
,
uvec3
, or
uvec4
; and “vec” is
a placeholder for
vec2
,
vec3
, or
vec4
. In all cases, the sizes of the input
and return vectors for any particular call must match.
Table B-7
Vector Relational Functions
Syntax
Description
bvec
lessThan
(vec
x,
vec
y
)
bvec
lessThan
(ivec
x,
ivec
y
)
bvec
lessThan
(uvec
x,
uvec
y
)
Returns the component-wise
compare of
x
<
y
.
bvec
lessThanEqual
(vec
x,
vec
y
)
bvec
lessThanEqual
(ivec
x,
ivec
y
)
bvec
lessThanEqual
(uvec
x,
uvec
y
)
Returns the component-wise
compare of x <=
y
.
bvec
greaterThan
(vec
x,
vec
y
)
bvec
greaterThan
(ivec
x,
ivec
y
)
bvec
greaterThan
(uvec
x,
uvec
y
)
Returns the component-wise
compare of
x
>
y
.
bvec
greaterThanEqual
(vec
x,
vec
y
)
bvec
greaterThanEqual
(ivec
x,
ivec
y
)
bvec
greaterThanEqual
(uvec
x,
uvec
y
)
Returns the component-wise
compare of
x
>=
y
.
bvec
equal
(vec
x,
vec
y
)
bvec
equal
(ivec
x,
ivec
y
)
bvec
equal
(uvec
x,
uvec
y
)
Returns the component-wise
compare of
x
==
y
.
bvec
notEqual
(vec
x,
vec
y
)
bvec
notEqual
(ivec
x,
ivec
y
)
bvec
notEqual
(uvec
x,
uvec
y
)
Returns the component-wise
compare of
x
!=
y
.
bool
any
(bvec2
x
)
bool
any
(bvec3
x
)
bool
any
(bvec4
x
)
Returns true if any component of
x
is
true
.
bool
all
(bvec2
x
)
bool
all
(bvec3
x
)
bool
all
(bvec4
x
)
Returns true only if all components
of
x
are
true
.
bvec2
not
(bvec2
x
)
bvec3
not
(bvec3
x
)
bvec4
not
(bvec4
x
)
Returns the component-wise logical
complement of
x.
