?? blender.cpp
字號(hào):
// from ALLEGRO By Shawn Hargreaves
// Optimised by Cloud Wu and Burton Radons.
#include "constant.h"
#pragma off( check_stack )
// 16 and 15 bits color mode alpha blender
/* macro for constructing the blender routines */
#define BLEND16(n) \
\
static unsigned long blend16_##n(unsigned long x, unsigned long y) \
{ \
unsigned long result; \
\
x = ((x&0xFFFF) | (x<<16)) & 0x7E0F81F; \
y = ((y&0xFFFF) | (y<<16)) & 0x7E0F81F; \
\
result = ((x - y) * (n*32/31) / 32 + y) & 0x7E0F81F; \
\
return ((result&0xFFFF) | (result>>16)); \
}
BLEND16(0) BLEND16(1) BLEND16(2) BLEND16(3)
BLEND16(4) BLEND16(5) BLEND16(6) BLEND16(7)
BLEND16(8) BLEND16(9) BLEND16(10) BLEND16(11)
BLEND16(12) BLEND16(13) BLEND16(14) BLEND16(15)
BLEND16(16) BLEND16(17) BLEND16(18) BLEND16(19)
BLEND16(20) BLEND16(21) BLEND16(22) BLEND16(23)
BLEND16(24) BLEND16(25) BLEND16(26) BLEND16(27)
BLEND16(28) BLEND16(29) BLEND16(30) BLEND16(31)
BlenderMap transBlender16 =
{ {
blend16_0, blend16_0, blend16_0, blend16_0,
blend16_0, blend16_0, blend16_0, blend16_0,
blend16_1, blend16_1, blend16_1, blend16_1,
blend16_1, blend16_1, blend16_1, blend16_1,
blend16_2, blend16_2, blend16_2, blend16_2,
blend16_2, blend16_2, blend16_2, blend16_2,
blend16_3, blend16_3, blend16_3, blend16_3,
blend16_3, blend16_3, blend16_3, blend16_3,
blend16_4, blend16_4, blend16_4, blend16_4,
blend16_4, blend16_4, blend16_4, blend16_4,
blend16_5, blend16_5, blend16_5, blend16_5,
blend16_5, blend16_5, blend16_5, blend16_5,
blend16_6, blend16_6, blend16_6, blend16_6,
blend16_6, blend16_6, blend16_6, blend16_6,
blend16_7, blend16_7, blend16_7, blend16_7,
blend16_7, blend16_7, blend16_7, blend16_7,
blend16_8, blend16_8, blend16_8, blend16_8,
blend16_8, blend16_8, blend16_8, blend16_8,
blend16_9, blend16_9, blend16_9, blend16_9,
blend16_9, blend16_9, blend16_9, blend16_9,
blend16_10, blend16_10, blend16_10, blend16_10,
blend16_10, blend16_10, blend16_10, blend16_10,
blend16_11, blend16_11, blend16_11, blend16_11,
blend16_11, blend16_11, blend16_11, blend16_11,
blend16_12, blend16_12, blend16_12, blend16_12,
blend16_12, blend16_12, blend16_12, blend16_12,
blend16_13, blend16_13, blend16_13, blend16_13,
blend16_13, blend16_13, blend16_13, blend16_13,
blend16_14, blend16_14, blend16_14, blend16_14,
blend16_14, blend16_14, blend16_14, blend16_14,
blend16_15, blend16_15, blend16_15, blend16_15,
blend16_15, blend16_15, blend16_15, blend16_15,
blend16_16, blend16_16, blend16_16, blend16_16,
blend16_16, blend16_16, blend16_16, blend16_16,
blend16_17, blend16_17, blend16_17, blend16_17,
blend16_17, blend16_17, blend16_17, blend16_17,
blend16_18, blend16_18, blend16_18, blend16_18,
blend16_18, blend16_18, blend16_18, blend16_18,
blend16_19, blend16_19, blend16_19, blend16_19,
blend16_19, blend16_19, blend16_19, blend16_19,
blend16_20, blend16_20, blend16_20, blend16_20,
blend16_20, blend16_20, blend16_20, blend16_20,
blend16_21, blend16_21, blend16_21, blend16_21,
blend16_21, blend16_21, blend16_21, blend16_21,
blend16_22, blend16_22, blend16_22, blend16_22,
blend16_22, blend16_22, blend16_22, blend16_22,
blend16_23, blend16_23, blend16_23, blend16_23,
blend16_23, blend16_23, blend16_23, blend16_23,
blend16_24, blend16_24, blend16_24, blend16_24,
blend16_24, blend16_24, blend16_24, blend16_24,
blend16_25, blend16_25, blend16_25, blend16_25,
blend16_25, blend16_25, blend16_25, blend16_25,
blend16_26, blend16_26, blend16_26, blend16_26,
blend16_26, blend16_26, blend16_26, blend16_26,
blend16_27, blend16_27, blend16_27, blend16_27,
blend16_27, blend16_27, blend16_27, blend16_27,
blend16_28, blend16_28, blend16_28, blend16_28,
blend16_28, blend16_28, blend16_28, blend16_28,
blend16_29, blend16_29, blend16_29, blend16_29,
blend16_29, blend16_29, blend16_29, blend16_29,
blend16_30, blend16_30, blend16_30, blend16_30,
blend16_30, blend16_30, blend16_30, blend16_30,
blend16_31, blend16_31, blend16_31, blend16_31,
blend16_31, blend16_31, blend16_31, blend16_31,
} };
///////////////////////////////////////////////////////////////////////////////////////////////
/* macro for constructing the blender routines */
#define BLEND15(n) \
\
static unsigned long blend15_##n(unsigned long x, unsigned long y) \
{ \
unsigned long result; \
\
x = ((x&0xFFFF) | (x<<16)) & 0x3E07C1F; \
y = ((y&0xFFFF) | (y<<16)) & 0x3E07C1F; \
\
result = ((x - y) * (n*32/31) / 32 + y) & 0x3E07C1F; \
\
return ((result&0xFFFF) | (result>>16)); \
}
/* declare 32 interpolation functions (one for each alpha) */
BLEND15(0) BLEND15(1) BLEND15(2) BLEND15(3)
BLEND15(4) BLEND15(5) BLEND15(6) BLEND15(7)
BLEND15(8) BLEND15(9) BLEND15(10) BLEND15(11)
BLEND15(12) BLEND15(13) BLEND15(14) BLEND15(15)
BLEND15(16) BLEND15(17) BLEND15(18) BLEND15(19)
BLEND15(20) BLEND15(21) BLEND15(22) BLEND15(23)
BLEND15(24) BLEND15(25) BLEND15(26) BLEND15(27)
BLEND15(28) BLEND15(29) BLEND15(30) BLEND15(31)
/* and list them all in a table */
BlenderMap transBlender15 =
{ {
blend15_0, blend15_0, blend15_0, blend15_0,
blend15_0, blend15_0, blend15_0, blend15_0,
blend15_1, blend15_1, blend15_1, blend15_1,
blend15_1, blend15_1, blend15_1, blend15_1,
blend15_2, blend15_2, blend15_2, blend15_2,
blend15_2, blend15_2, blend15_2, blend15_2,
blend15_3, blend15_3, blend15_3, blend15_3,
blend15_3, blend15_3, blend15_3, blend15_3,
blend15_4, blend15_4, blend15_4, blend15_4,
blend15_4, blend15_4, blend15_4, blend15_4,
blend15_5, blend15_5, blend15_5, blend15_5,
blend15_5, blend15_5, blend15_5, blend15_5,
blend15_6, blend15_6, blend15_6, blend15_6,
blend15_6, blend15_6, blend15_6, blend15_6,
blend15_7, blend15_7, blend15_7, blend15_7,
blend15_7, blend15_7, blend15_7, blend15_7,
blend15_8, blend15_8, blend15_8, blend15_8,
blend15_8, blend15_8, blend15_8, blend15_8,
blend15_9, blend15_9, blend15_9, blend15_9,
blend15_9, blend15_9, blend15_9, blend15_9,
blend15_10, blend15_10, blend15_10, blend15_10,
blend15_10, blend15_10, blend15_10, blend15_10,
blend15_11, blend15_11, blend15_11, blend15_11,
blend15_11, blend15_11, blend15_11, blend15_11,
blend15_12, blend15_12, blend15_12, blend15_12,
blend15_12, blend15_12, blend15_12, blend15_12,
blend15_13, blend15_13, blend15_13, blend15_13,
blend15_13, blend15_13, blend15_13, blend15_13,
blend15_14, blend15_14, blend15_14, blend15_14,
blend15_14, blend15_14, blend15_14, blend15_14,
blend15_15, blend15_15, blend15_15, blend15_15,
blend15_15, blend15_15, blend15_15, blend15_15,
blend15_16, blend15_16, blend15_16, blend15_16,
blend15_16, blend15_16, blend15_16, blend15_16,
blend15_17, blend15_17, blend15_17, blend15_17,
blend15_17, blend15_17, blend15_17, blend15_17,
blend15_18, blend15_18, blend15_18, blend15_18,
blend15_18, blend15_18, blend15_18, blend15_18,
blend15_19, blend15_19, blend15_19, blend15_19,
blend15_19, blend15_19, blend15_19, blend15_19,
blend15_20, blend15_20, blend15_20, blend15_20,
blend15_20, blend15_20, blend15_20, blend15_20,
blend15_21, blend15_21, blend15_21, blend15_21,
blend15_21, blend15_21, blend15_21, blend15_21,
blend15_22, blend15_22, blend15_22, blend15_22,
blend15_22, blend15_22, blend15_22, blend15_22,
blend15_23, blend15_23, blend15_23, blend15_23,
blend15_23, blend15_23, blend15_23, blend15_23,
blend15_24, blend15_24, blend15_24, blend15_24,
blend15_24, blend15_24, blend15_24, blend15_24,
blend15_25, blend15_25, blend15_25, blend15_25,
blend15_25, blend15_25, blend15_25, blend15_25,
blend15_26, blend15_26, blend15_26, blend15_26,
blend15_26, blend15_26, blend15_26, blend15_26,
blend15_27, blend15_27, blend15_27, blend15_27,
blend15_27, blend15_27, blend15_27, blend15_27,
blend15_28, blend15_28, blend15_28, blend15_28,
blend15_28, blend15_28, blend15_28, blend15_28,
blend15_29, blend15_29, blend15_29, blend15_29,
blend15_29, blend15_29, blend15_29, blend15_29,
blend15_30, blend15_30, blend15_30, blend15_30,
blend15_30, blend15_30, blend15_30, blend15_30,
blend15_31, blend15_31, blend15_31, blend15_31,
blend15_31, blend15_31, blend15_31, blend15_31,
} };
#define BRIGHTNESS16( n ) \
\
static unsigned long brightness16_##n( unsigned long a ) \
{ \
unsigned long result; \
result = ((((a&0xffff) | (a<<16)) & 0x7e0f81f ) * n / 32 ) & 0x7e0f81f; \
return ( result | ( result >> 16 )); \
}
BRIGHTNESS16( 3 ) BRIGHTNESS16( 5 )
BRIGHTNESS16( 6 ) BRIGHTNESS16( 7 ) BRIGHTNESS16( 9 )
BRIGHTNESS16( 10 ) BRIGHTNESS16( 11 )
BRIGHTNESS16( 13 ) BRIGHTNESS16( 14 ) BRIGHTNESS16( 15 )
BRIGHTNESS16( 17 ) BRIGHTNESS16( 18 ) BRIGHTNESS16( 19 )
BRIGHTNESS16( 21 ) BRIGHTNESS16( 22 )
BRIGHTNESS16( 23 ) BRIGHTNESS16( 25 ) BRIGHTNESS16( 26 )
BRIGHTNESS16( 27 ) BRIGHTNESS16( 28 ) BRIGHTNESS16( 29 )
BRIGHTNESS16( 30 ) BRIGHTNESS16( 31 )
static unsigned long brightness16_0( unsigned long a )
{
return 0;
}
static unsigned long brightness16_1( unsigned long a )
{
return 0;
}
static unsigned long brightness16_2( unsigned long a )
{
return ( a >> 4 ) & 0x0861;
}
static unsigned long brightness16_4( unsigned long a )
{
return ( a >> 3 ) & 0x18e3;
}
static unsigned long brightness16_8( unsigned long a )
?? 快捷鍵說明
復(fù)制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號(hào)
Ctrl + =
減小字號(hào)
Ctrl + -