multi-index-range

Vocabulary

gpu.render

Class description

Objects of this tuple class can be passed as the indexes slot of a non-instanced render-set to instruct render to assemble primitives from the active vertex-array by using multiple consecutive slices of its elements.

•	The starts slot contains a uint-array of indexes into the array from which to start generating primitives.
•	The counts slot contains a uint-array of corresponding counts of indexes to read from each specified start index.

See also

index-elements, index-range, multi-index-elements

Definition

USING: specialized-arrays.instances.alien.c-types.uint ;

IN: gpu.render

TUPLE: multi-index-range
    { starts uint-array read-only initial: uint-array{ } }
    { counts uint-array read-only initial: uint-array{ } } ;

Methods

USING: accessors gpu.render gpu.render.private kernel opengl.gl
sequences ;

M: multi-index-range render-vertex-indexes
    [ gl-primitive-mode ]
    [ [ starts>> ] [ counts>> dup length ] bi ] bi*
    glMultiDrawArrays ;