depth-state
GPU-accelerated rendering » GPU state

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Vocabulary
gpu.state

Class description
The depth-state controls how incoming fragments' depth values are tested against the depth buffer. The comparison slot, if not f, determines the condition that must be true between the incoming fragment depth and depth buffer depth to pass a fragment. If the comparison is f, depth testing is disabled and all fragments pass. cmp-less is typically used for depth culling.

See also
<depth-state>, get-depth-state

Definition

IN: gpu.state

TUPLE: depth-state
    { comparison maybe{ comparison } read-only initial: f } ;

Methods

USING: accessors gpu.state gpu.state.private kernel opengl.gl ;

M: depth-state set-gpu-state*
    GL_DEPTH_TEST swap comparison>>
    [ gl-comparison glDepthFunc glEnable ] [ glDisable ] if* ;