s_alpha.h File Reference

#include "s_context.h"

Functions
GLint	_swrast_alpha_test (const GLcontext *ctx, SWspan *span)
	Perform the alpha test for an array of pixels.

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Function Documentation

GLint _swrast_alpha_test	(	const GLcontext *	ctx,
		SWspan *	span
	)

Perform the alpha test for an array of pixels.

For pixels that fail the test, mask[i] will be set to 0.

Returns:

0 if all pixels in the span failed the alpha test, 1 if one or more pixels passed the alpha test.

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