glSampleCoverage Method

public static void SampleCoverage(
	float value,
	bool invert = false
)

Public Shared Sub SampleCoverage ( 
	value As Single,
	Optional invert As Boolean = false
)

public:
static void SampleCoverage(
	float value, 
	bool invert = false
)

static member SampleCoverage : 
        value : float32 * 
        ?invert : bool 
(* Defaults:
        let _invert = defaultArg invert false
*)
-> unit 

Parameters

value

Type: SystemSingle
sample coverage value. The value is clamped to the range 0..1. The initial value is 1.0.

invert (Optional)

Type: SystemBoolean
(optional) value representing if the coverage masks should be inverted. Defaults to False.

value is used in constructing a temporary mask used in determining which samples will be used in resolving the final fragment color. This mask is bitwise-anded with the coverage mask generated from the multisampling computation. If the invert flag is set, the temporary mask is inverted (all bits flipped) and then the bitwise-and is computed.

If an implementation does not have any multisample buffers available, or multisampling is disabled, rasterization occurs with only a single sample computing a pixel's final RGB color.

Provided an implementation supports multisample buffers, and multisampling is enabled, then a pixel's final color is generated by combining several samples per pixel. Each sample contains color, depth, and stencil information, allowing those operations to be performed on each sample.

OpenGL API: glSampleCoverage

Reference