glSampleCoverage

specify multisample coverage parameters

function glSampleCoverage(float $value, bool $invert) : void

arguments

1. float $value Specify a single floating-point sample coverage value. The value is clamped to the range 0 1 . The initial value is 1.0.
2. bool $invert Specify a single boolean value representing if the coverage masks should be inverted. GL_TRUE and GL_FALSE are accepted. The initial value is GL_FALSE.

returns

void

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