reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame^] | 1 | #include "SkBitmapProcState.h" |
| 2 | #include "SkPerspIter.h" |
| 3 | #include "SkShader.h" |
| 4 | |
| 5 | void decal_nofilter_scale(uint32_t dst[], SkFixed fx, SkFixed dx, int count); |
| 6 | void decal_filter_scale(uint32_t dst[], SkFixed fx, SkFixed dx, int count); |
| 7 | |
| 8 | #ifdef SK_CPU_BENDIAN |
| 9 | #define PACK_TWO_SHORTS(pri, sec) ((pri) << 16 | (sec)) |
| 10 | #else |
| 11 | #define PACK_TWO_SHORTS(pri, sec) ((pri) | ((sec) << 16)) |
| 12 | #endif |
| 13 | |
| 14 | #ifdef SK_DEBUG |
| 15 | static uint32_t pack_two_shorts(U16CPU pri, U16CPU sec) |
| 16 | { |
| 17 | SkASSERT((uint16_t)pri == pri); |
| 18 | SkASSERT((uint16_t)sec == sec); |
| 19 | return PACK_TWO_SHORTS(pri, sec); |
| 20 | } |
| 21 | #else |
| 22 | #define pack_two_shorts(pri, sec) PACK_TWO_SHORTS(pri, sec) |
| 23 | #endif |
| 24 | |
| 25 | #define MAKENAME(suffix) ClampX_ClampY ## suffix |
| 26 | #define TILEX_PROCF(fx, max) SkClampMax((fx) >> 16, max) |
| 27 | #define TILEY_PROCF(fy, max) SkClampMax((fy) >> 16, max) |
| 28 | #define TILEX_LOW_BITS(fx, max) (((fx) >> 12) & 0xF) |
| 29 | #define TILEY_LOW_BITS(fy, max) (((fy) >> 12) & 0xF) |
| 30 | #define CHECK_FOR_DECAL |
| 31 | #include "SkBitmapProcState_matrix.h" |
| 32 | |
| 33 | #define MAKENAME(suffix) RepeatX_RepeatY ## suffix |
| 34 | #define TILEX_PROCF(fx, max) (((fx) & 0xFFFF) * ((max) + 1) >> 16) |
| 35 | #define TILEY_PROCF(fy, max) (((fy) & 0xFFFF) * ((max) + 1) >> 16) |
| 36 | #define TILEX_LOW_BITS(fx, max) ((((fx) & 0xFFFF) * ((max) + 1) >> 12) & 0xF) |
| 37 | #define TILEY_LOW_BITS(fy, max) ((((fy) & 0xFFFF) * ((max) + 1) >> 12) & 0xF) |
| 38 | #include "SkBitmapProcState_matrix.h" |
| 39 | |
| 40 | #define MAKENAME(suffix) GeneralXY ## suffix |
| 41 | #define PREAMBLE(state) SkBitmapProcState::FixedTileProc tileProcX = (state).fTileProcX; \ |
| 42 | SkBitmapProcState::FixedTileProc tileProcY = (state).fTileProcY |
| 43 | #define PREAMBLE_PARAM_X , SkBitmapProcState::FixedTileProc tileProcX |
| 44 | #define PREAMBLE_PARAM_Y , SkBitmapProcState::FixedTileProc tileProcY |
| 45 | #define PREAMBLE_ARG_X , tileProcX |
| 46 | #define PREAMBLE_ARG_Y , tileProcY |
| 47 | #define TILEX_PROCF(fx, max) (tileProcX(fx) * ((max) + 1) >> 16) |
| 48 | #define TILEY_PROCF(fy, max) (tileProcY(fy) * ((max) + 1) >> 16) |
| 49 | #define TILEX_LOW_BITS(fx, max) ((tileProcX(fx) * ((max) + 1) >> 12) & 0xF) |
| 50 | #define TILEY_LOW_BITS(fy, max) ((tileProcY(fy) * ((max) + 1) >> 12) & 0xF) |
| 51 | #include "SkBitmapProcState_matrix.h" |
| 52 | |
| 53 | static inline U16CPU fixed_clamp(SkFixed x) |
| 54 | { |
| 55 | #ifdef SK_CPU_HAS_CONDITIONAL_INSTR |
| 56 | if (x >> 16) |
| 57 | x = 0xFFFF; |
| 58 | if (x < 0) |
| 59 | x = 0; |
| 60 | #else |
| 61 | if (x >> 16) |
| 62 | { |
| 63 | if (x < 0) |
| 64 | x = 0; |
| 65 | else |
| 66 | x = 0xFFFF; |
| 67 | } |
| 68 | #endif |
| 69 | return x; |
| 70 | } |
| 71 | |
| 72 | static inline U16CPU fixed_repeat(SkFixed x) |
| 73 | { |
| 74 | return x & 0xFFFF; |
| 75 | } |
| 76 | |
| 77 | static inline U16CPU fixed_mirror(SkFixed x) |
| 78 | { |
| 79 | SkFixed s = x << 15 >> 31; |
| 80 | // s is FFFFFFFF if we're on an odd interval, or 0 if an even interval |
| 81 | return (x ^ s) & 0xFFFF; |
| 82 | } |
| 83 | |
| 84 | static SkBitmapProcState::FixedTileProc choose_tile_proc(unsigned m) |
| 85 | { |
| 86 | if (SkShader::kClamp_TileMode == m) |
| 87 | return fixed_clamp; |
| 88 | if (SkShader::kRepeat_TileMode == m) |
| 89 | return fixed_repeat; |
| 90 | SkASSERT(SkShader::kMirror_TileMode == m); |
| 91 | return fixed_mirror; |
| 92 | } |
| 93 | |
| 94 | SkBitmapProcState::MatrixProc SkBitmapProcState::chooseMatrixProc() |
| 95 | { |
| 96 | int index = 0; |
| 97 | if (fDoFilter) |
| 98 | index = 1; |
| 99 | if (fInvType & SkMatrix::kPerspective_Mask) |
| 100 | index |= 4; |
| 101 | else if (fInvType & SkMatrix::kAffine_Mask) |
| 102 | index |= 2; |
| 103 | |
| 104 | if (SkShader::kClamp_TileMode == fTileModeX && |
| 105 | SkShader::kClamp_TileMode == fTileModeY) |
| 106 | { |
| 107 | // clamp gets special version of filterOne |
| 108 | fFilterOneX = SK_Fixed1; |
| 109 | fFilterOneY = SK_Fixed1; |
| 110 | return ClampX_ClampY_Procs[index]; |
| 111 | } |
| 112 | |
| 113 | // all remaining procs use this form for filterOne |
| 114 | fFilterOneX = SK_Fixed1 / fBitmap->width(); |
| 115 | fFilterOneY = SK_Fixed1 / fBitmap->height(); |
| 116 | |
| 117 | if (SkShader::kRepeat_TileMode == fTileModeX && |
| 118 | SkShader::kRepeat_TileMode == fTileModeY) |
| 119 | { |
| 120 | return RepeatX_RepeatY_Procs[index]; |
| 121 | } |
| 122 | |
| 123 | // only general needs these procs |
| 124 | fTileProcX = choose_tile_proc(fTileModeX); |
| 125 | fTileProcY = choose_tile_proc(fTileModeY); |
| 126 | return GeneralXY_Procs[index]; |
| 127 | } |
| 128 | |
| 129 | ////////////////////////////////////////////////////////////////////////////// |
| 130 | |
| 131 | void decal_nofilter_scale(uint32_t dst[], SkFixed fx, SkFixed dx, int count) |
| 132 | { |
| 133 | int i; |
| 134 | |
| 135 | for (i = (count >> 2); i > 0; --i) |
| 136 | { |
| 137 | *dst++ = pack_two_shorts(fx >> 16, (fx + dx) >> 16); |
| 138 | fx += dx+dx; |
| 139 | *dst++ = pack_two_shorts(fx >> 16, (fx + dx) >> 16); |
| 140 | fx += dx+dx; |
| 141 | } |
| 142 | uint16_t* xx = (uint16_t*)dst; |
| 143 | |
| 144 | for (i = (count & 3); i > 0; --i) |
| 145 | { |
| 146 | *xx++ = SkToU16(fx >> 16); fx += dx; |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | void decal_filter_scale(uint32_t dst[], SkFixed fx, SkFixed dx, int count) |
| 151 | { |
| 152 | if (count & 1) |
| 153 | { |
| 154 | SkASSERT((fx >> (16 + 14)) == 0); |
| 155 | *dst++ = (fx >> 12 << 14) | ((fx >> 16) + 1); |
| 156 | fx += dx; |
| 157 | } |
| 158 | while ((count -= 2) >= 0) |
| 159 | { |
| 160 | SkASSERT((fx >> (16 + 14)) == 0); |
| 161 | *dst++ = (fx >> 12 << 14) | ((fx >> 16) + 1); |
| 162 | fx += dx; |
| 163 | |
| 164 | *dst++ = (fx >> 12 << 14) | ((fx >> 16) + 1); |
| 165 | fx += dx; |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | /////////////////////////////////// |
| 170 | |
| 171 | void repeat_nofilter_identity(uint32_t dst[], int x, int width, int count) |
| 172 | { |
| 173 | if (x >= width) |
| 174 | x %= width; |
| 175 | |
| 176 | int i; |
| 177 | uint16_t* xx = (uint16_t*)dst; |
| 178 | |
| 179 | // do the first partial run |
| 180 | int n = width - x; |
| 181 | if (n > count) |
| 182 | n = count; |
| 183 | |
| 184 | count -= n; |
| 185 | n += x; |
| 186 | for (i = x; i < n; i++) |
| 187 | *xx++ = SkToU16(i); |
| 188 | |
| 189 | // do all the full-width runs |
| 190 | while ((count -= width) >= 0) |
| 191 | for (i = 0; i < width; i++) |
| 192 | *xx++ = SkToU16(i); |
| 193 | |
| 194 | // final cleanup run |
| 195 | count += width; |
| 196 | for (i = 0; i < count; i++) |
| 197 | *xx++ = SkToU16(i); |
| 198 | } |
| 199 | |