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comparison: gfx/cairo/libpixman/src/pixman-combine16.c
gfx/cairo/libpixman/src/pixman-combine16.c
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:cc8d5f7040f6 |
|---|---|
| 1 #ifdef HAVE_CONFIG_H | |
| 2 #include <config.h> | |
| 3 #endif | |
| 4 | |
| 5 #include <math.h> | |
| 6 #include <string.h> | |
| 7 | |
| 8 #include "pixman-private.h" | |
| 9 | |
| 10 #include "pixman-combine32.h" | |
| 11 | |
| 12 static force_inline uint32_t | |
| 13 combine_mask (const uint32_t src, const uint32_t mask) | |
| 14 { | |
| 15 uint32_t s, m; | |
| 16 | |
| 17 m = mask >> A_SHIFT; | |
| 18 | |
| 19 if (!m) | |
| 20 return 0; | |
| 21 s = src; | |
| 22 | |
| 23 UN8x4_MUL_UN8 (s, m); | |
| 24 | |
| 25 return s; | |
| 26 } | |
| 27 | |
| 28 static void | |
| 29 combine_src_u (pixman_implementation_t *imp, | |
| 30 pixman_op_t op, | |
| 31 uint32_t * dest, | |
| 32 const uint32_t * src, | |
| 33 const uint32_t * mask, | |
| 34 int width) | |
| 35 { | |
| 36 int i; | |
| 37 | |
| 38 if (!mask) | |
| 39 memcpy (dest, src, width * sizeof (uint16_t)); | |
| 40 else | |
| 41 { | |
| 42 uint16_t *d = (uint16_t*)dest; | |
| 43 uint16_t *src16 = (uint16_t*)src; | |
| 44 for (i = 0; i < width; ++i) | |
| 45 { | |
| 46 if ((*mask & 0xff000000) == 0xff000000) { | |
| 47 // it's likely worth special casing | |
| 48 // fully opaque because it avoids | |
| 49 // the cost of conversion as well the multiplication | |
| 50 *(d + i) = *src16; | |
| 51 } else { | |
| 52 // the mask is still 32bits | |
| 53 uint32_t s = combine_mask (convert_0565_to_8888(*src16), *mask); | |
| 54 *(d + i) = convert_8888_to_0565(s); | |
| 55 } | |
| 56 mask++; | |
| 57 src16++; | |
| 58 } | |
| 59 } | |
| 60 | |
| 61 } | |
| 62 | |
| 63 static void | |
| 64 combine_over_u (pixman_implementation_t *imp, | |
| 65 pixman_op_t op, | |
| 66 uint32_t * dest, | |
| 67 const uint32_t * src, | |
| 68 const uint32_t * mask, | |
| 69 int width) | |
| 70 { | |
| 71 int i; | |
| 72 | |
| 73 if (!mask) | |
| 74 memcpy (dest, src, width * sizeof (uint16_t)); | |
| 75 else | |
| 76 { | |
| 77 uint16_t *d = (uint16_t*)dest; | |
| 78 uint16_t *src16 = (uint16_t*)src; | |
| 79 for (i = 0; i < width; ++i) | |
| 80 { | |
| 81 if ((*mask & 0xff000000) == 0xff000000) { | |
| 82 // it's likely worth special casing | |
| 83 // fully opaque because it avoids | |
| 84 // the cost of conversion as well the multiplication | |
| 85 *(d + i) = *src16; | |
| 86 } else if ((*mask & 0xff000000) == 0x00000000) { | |
| 87 // keep the dest the same | |
| 88 } else { | |
| 89 // the mask is still 32bits | |
| 90 uint32_t s = combine_mask (convert_0565_to_8888(*src16), *mask); | |
| 91 uint32_t ia = ALPHA_8 (~s); | |
| 92 uint32_t d32 = convert_0565_to_8888(*(d + i)); | |
| 93 UN8x4_MUL_UN8_ADD_UN8x4 (d32, ia, s); | |
| 94 *(d + i) = convert_8888_to_0565(d32); | |
| 95 } | |
| 96 mask++; | |
| 97 src16++; | |
| 98 } | |
| 99 } | |
| 100 | |
| 101 } | |
| 102 | |
| 103 | |
| 104 void | |
| 105 _pixman_setup_combiner_functions_16 (pixman_implementation_t *imp) | |
| 106 { | |
| 107 int i; | |
| 108 for (i = 0; i < PIXMAN_N_OPERATORS; i++) { | |
| 109 imp->combine_16[i] = NULL; | |
| 110 } | |
| 111 imp->combine_16[PIXMAN_OP_SRC] = combine_src_u; | |
| 112 imp->combine_16[PIXMAN_OP_OVER] = combine_over_u; | |
| 113 } | |
| 114 |
