s_points.c File Reference

#include "main/glheader.h"
#include "main/colormac.h"
#include "main/context.h"
#include "main/macros.h"
#include "main/texstate.h"
#include "s_context.h"
#include "s_feedback.h"
#include "s_points.h"
#include "s_span.h"

Defines
#define	CULL_INVALID(V)
	Used to cull points with invalid coords.
Functions
static INLINE GLfloat	get_size (const GLcontext *ctx, const SWvertex *vert, GLboolean smoothed)
	Get/compute the point size.
static void	sprite_point (GLcontext *ctx, const SWvertex *vert)
	Draw a point sprite.
static void	smooth_point (GLcontext *ctx, const SWvertex *vert)
	Draw smooth/antialiased point.
static void	large_point (GLcontext *ctx, const SWvertex *vert)
	Draw large (size >= 1) non-AA point.
static void	pixel_point (GLcontext *ctx, const SWvertex *vert)
	Draw size=1, single-pixel point.
void	_swrast_add_spec_terms_point (GLcontext *ctx, const SWvertex *v0)
	Add specular color to primary color, draw point, restore original primary color.
void	_swrast_choose_point (GLcontext *ctx)
	Examine current state to determine which point drawing function to use.

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Define Documentation

#define CULL_INVALID

(

V

)

Value:

do {                                              \
      float tmp = (V)->attrib[FRAG_ATTRIB_WPOS][0]   \
                + (V)->attrib[FRAG_ATTRIB_WPOS][1];  \
      if (IS_INF_OR_NAN(tmp))                        \
         return;                                     \
   } while(0)

Used to cull points with invalid coords.

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Function Documentation

void _swrast_add_spec_terms_point	(	GLcontext *	ctx,
		const SWvertex *	v0
	)

Add specular color to primary color, draw point, restore original primary color.

void _swrast_choose_point

(

GLcontext *

ctx

)

Examine current state to determine which point drawing function to use.

static INLINE GLfloat get_size	(	const GLcontext *	ctx,
		const SWvertex *	vert,
		GLboolean	smoothed
	)			[static]

Get/compute the point size.

The size may come from a vertex shader, or computed with attentuation or just the glPointSize value. Must also clamp to user-defined range and implmentation limits.

static void large_point	(	GLcontext *	ctx,
		const SWvertex *	vert
	)			[static]

Draw large (size >= 1) non-AA point.

RGB or CI mode.

static void pixel_point	(	GLcontext *	ctx,
		const SWvertex *	vert
	)			[static]

Draw size=1, single-pixel point.

static void smooth_point	(	GLcontext *	ctx,
		const SWvertex *	vert
	)			[static]

Draw smooth/antialiased point.

RGB or CI mode.

static void sprite_point	(	GLcontext *	ctx,
		const SWvertex *	vert
	)			[static]

Draw a point sprite.

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