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yaml --- r: 54935 b: refs/heads/master c: dc0e6e0 h: refs/heads/master i: 54933: ecd7d64 54931: b5aa0f0 54927: 62ba6e2 v: v3
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Antonino A. Daplas
authored and
Linus Torvalds
committed
May 8, 2007
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--- | ||
refs/heads/master: 52102c07a68a26fe6f8926e6a8497b577655f18a | ||
refs/heads/master: dc0e6e0544f1cb2af44e5d7a7e68acda05dec6fa |
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#ifndef _FB_DRAW_H | ||
#define _FB_DRAW_H | ||
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#include <asm/types.h> | ||
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/* | ||
* Compose two values, using a bitmask as decision value | ||
* This is equivalent to (a & mask) | (b & ~mask) | ||
*/ | ||
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static inline unsigned long | ||
comp(unsigned long a, unsigned long b, unsigned long mask) | ||
{ | ||
return ((a ^ b) & mask) ^ b; | ||
} | ||
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/* | ||
* Create a pattern with the given pixel's color | ||
*/ | ||
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#if BITS_PER_LONG == 64 | ||
static inline unsigned long | ||
pixel_to_pat( u32 bpp, u32 pixel) | ||
{ | ||
switch (bpp) { | ||
case 1: | ||
return 0xfffffffffffffffful*pixel; | ||
case 2: | ||
return 0x5555555555555555ul*pixel; | ||
case 4: | ||
return 0x1111111111111111ul*pixel; | ||
case 8: | ||
return 0x0101010101010101ul*pixel; | ||
case 12: | ||
return 0x0001001001001001ul*pixel; | ||
case 16: | ||
return 0x0001000100010001ul*pixel; | ||
case 24: | ||
return 0x0000000001000001ul*pixel; | ||
case 32: | ||
return 0x0000000100000001ul*pixel; | ||
default: | ||
panic("pixel_to_pat(): unsupported pixelformat\n"); | ||
} | ||
} | ||
#else | ||
static inline unsigned long | ||
pixel_to_pat( u32 bpp, u32 pixel) | ||
{ | ||
switch (bpp) { | ||
case 1: | ||
return 0xfffffffful*pixel; | ||
case 2: | ||
return 0x55555555ul*pixel; | ||
case 4: | ||
return 0x11111111ul*pixel; | ||
case 8: | ||
return 0x01010101ul*pixel; | ||
case 12: | ||
return 0x00001001ul*pixel; | ||
case 16: | ||
return 0x00010001ul*pixel; | ||
case 24: | ||
return 0x00000001ul*pixel; | ||
case 32: | ||
return 0x00000001ul*pixel; | ||
default: | ||
panic("pixel_to_pat(): unsupported pixelformat\n"); | ||
} | ||
} | ||
#endif | ||
#endif /* FB_DRAW_H */ |
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