Texture Operations

Macros
#define	GW_TEX_LEAVE   0
	Use the source pixel value.
#define	GW_TEX_REPLACE   1
	Use the texture pixel value.
#define	GW_TEX_MODULATE   2
	Multiply the source with the texture.
#define	GW_TEX_ADD   3
	Add the source and texture.
#define	GW_TEX_ADD_SIGNED   4
	Add the source and texture with an 0.5 subtraction.
#define	GW_TEX_SUBTRACT   5
	Subtract the source from the texture.
#define	GW_TEX_ADD_SMOOTH   6
	Add the source and the texture then subtract their product.
#define	GW_TEX_ALPHA_BLEND   7
	Alpha blend the texture with the source.
#define	GW_TEX_PREMULT_ALPHA_BLEND   8
	Alpha blend the the source with a premultiplied alpha texture.
#define	GW_TEX_ALPHA_BLEND2   9
	Alpha blend the the source with a premultiplied alpha texture with GL_MODULATE as the tex env instead of GL_DECAL.

Detailed Description

Macro Definition Documentation

GW_TEX_LEAVE

#define GW_TEX_LEAVE   0

Use the source pixel value.

GW_TEX_REPLACE

#define GW_TEX_REPLACE   1

Use the texture pixel value.

GW_TEX_MODULATE

#define GW_TEX_MODULATE   2

Multiply the source with the texture.

GW_TEX_ADD

#define GW_TEX_ADD   3

Add the source and texture.

GW_TEX_ADD_SIGNED

#define GW_TEX_ADD_SIGNED   4

Add the source and texture with an 0.5 subtraction.

GW_TEX_SUBTRACT

#define GW_TEX_SUBTRACT   5

Subtract the source from the texture.

GW_TEX_ADD_SMOOTH

#define GW_TEX_ADD_SMOOTH   6

Add the source and the texture then subtract their product.

GW_TEX_ALPHA_BLEND

#define GW_TEX_ALPHA_BLEND   7

Alpha blend the texture with the source.

GW_TEX_PREMULT_ALPHA_BLEND

#define GW_TEX_PREMULT_ALPHA_BLEND   8

Alpha blend the the source with a premultiplied alpha texture.

GW_TEX_ALPHA_BLEND2

#define GW_TEX_ALPHA_BLEND2   9

Alpha blend the the source with a premultiplied alpha texture with GL_MODULATE as the tex env instead of GL_DECAL.