draw_blending.h File Reference

#include <tamtypes.h>

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Data Structures
struct	blend_t

Macros
#define	BLEND_COLOR_SOURCE   0
#define	BLEND_COLOR_DEST   1
#define	BLEND_COLOR_ZERO   2
#define	BLEND_ALPHA_SOURCE   0
#define	BLEND_ALPHA_DEST   1
#define	BLEND_ALPHA_FIXED   2
#define	ALPHA_CORRECT_RGBA32   0
#define	ALPHA_CORRECT_RGBA16   1

Functions
qword_t *	draw_pixel_alpha_control (qword_t *q, int enable)
qword_t *	draw_alpha_blending (qword_t *q, int context, blend_t *blend)
qword_t *	draw_alpha_correction (qword_t *q, int context, int alpha)

Detailed Description

Draw library blending functions

Definition in file draw_blending.h.

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Data Structure Documentation

blend_t

struct blend_t

Definition at line 26 of file draw_blending.h.

Data Fields
char	color1
char	color2
char	alpha
char	color3
unsigned char	fixed_alpha

Macro Definition Documentation

BLEND_COLOR_SOURCE

#define BLEND_COLOR_SOURCE   0

Alpha Blending

Definition at line 14 of file draw_blending.h.

ALPHA_CORRECT_RGBA32

#define ALPHA_CORRECT_RGBA32   0

Alpha Correction

Definition at line 23 of file draw_blending.h.

Function Documentation

draw_pixel_alpha_control()

qword_t* draw_pixel_alpha_control	(	qword_t *	q,
		int	enable
	)

Alpha Blending Per-Pixel MSB Control

Definition at line 8 of file draw_environment.c.

draw_alpha_blending()

qword_t* draw_alpha_blending	(	qword_t *	q,
		int	context,
		blend_t *	blend
	)

Alpha Blending

Definition at line 20 of file draw_environment.c.

draw_alpha_correction()

qword_t* draw_alpha_correction	(	qword_t *	q,
		int	context,
		int	alpha
	)

Alpha Correction

Definition at line 176 of file draw_environment.c.