OLD | NEW |
1 /* | 1 /* |
2 * Copyright 2016 Google Inc. | 2 * Copyright 2016 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef SkColorXform_opts_DEFINED | 8 #ifndef SkColorXform_opts_DEFINED |
9 #define SkColorXform_opts_DEFINED | 9 #define SkColorXform_opts_DEFINED |
10 | 10 |
11 #include "SkNx.h" | 11 #include "SkNx.h" |
12 #include "SkColorPriv.h" | 12 #include "SkColorPriv.h" |
13 | 13 |
| 14 extern const float sk_linear_from_srgb[256]; |
| 15 extern const float sk_linear_from_2dot2[256]; |
| 16 |
14 namespace SK_OPTS_NS { | 17 namespace SK_OPTS_NS { |
15 | 18 |
16 extern const float linear_from_srgb[256] = { | |
17 0.000000000000000000f, 0.000303526983548838f, 0.000607053967097675f, 0.0
00910580950646513f, | |
18 0.001214107934195350f, 0.001517634917744190f, 0.001821161901293030f, 0.0
02124688884841860f, | |
19 0.002428215868390700f, 0.002731742851939540f, 0.003034518678424960f, 0.0
03346535763899160f, | |
20 0.003676507324047440f, 0.004024717018496310f, 0.004391442037410290f, 0.0
04776953480693730f, | |
21 0.005181516702338390f, 0.005605391624202720f, 0.006048833022857060f, 0.0
06512090792594470f, | |
22 0.006995410187265390f, 0.007499032043226180f, 0.008023192985384990f, 0.0
08568125618069310f, | |
23 0.009134058702220790f, 0.009721217320237850f, 0.010329823029626900f, 0.0
10960094006488200f, | |
24 0.011612245179743900f, 0.012286488356915900f, 0.012983032342173000f, 0.0
13702083047289700f, | |
25 0.014443843596092500f, 0.015208514422912700f, 0.015996293365509600f, 0.0
16807375752887400f, | |
26 0.017641954488384100f, 0.018500220128379700f, 0.019382360956935700f, 0.0
20288563056652400f, | |
27 0.021219010376003600f, 0.022173884793387400f, 0.023153366178110400f, 0.0
24157632448504800f, | |
28 0.025186859627361600f, 0.026241221894849900f, 0.027320891639074900f, 0.0
28426039504420800f, | |
29 0.029556834437808800f, 0.030713443732993600f, 0.031896033073011500f, 0.0
33104766570885100f, | |
30 0.034339806808682200f, 0.035601314875020300f, 0.036889450401100000f, 0.0
38204371595346500f, | |
31 0.039546235276732800f, 0.040915196906853200f, 0.042311410620809700f, 0.0
43735029256973500f, | |
32 0.045186204385675500f, 0.046665086336880100f, 0.048171824226889400f, 0.0
49706565984127200f, | |
33 0.051269458374043200f, 0.052860647023180200f, 0.054480276442442400f, 0.0
56128490049600100f, | |
34 0.057805430191067200f, 0.059511238162981200f, 0.061246054231617600f, 0.0
63010017653167700f, | |
35 0.064803266692905800f, 0.066625938643772900f, 0.068478169844400200f, 0.0
70360095696595900f, | |
36 0.072271850682317500f, 0.074213568380149600f, 0.076185381481307900f, 0.0
78187421805186300f, | |
37 0.080219820314468300f, 0.082282707129814800f, 0.084376211544148800f, 0.0
86500462036549800f, | |
38 0.088655586285772900f, 0.090841711183407700f, 0.093058962846687500f, 0.0
95307466630964700f, | |
39 0.097587347141862500f, 0.099898728247113900f, 0.102241733088101000f, 0.1
04616484091104000f, | |
40 0.107023102978268000f, 0.109461710778299000f, 0.111932427836906000f, 0.1
14435373826974000f, | |
41 0.116970667758511000f, 0.119538427988346000f, 0.122138772229602000f, 0.1
24771817560950000f, | |
42 0.127437680435647000f, 0.130136476690364000f, 0.132868321553818000f, 0.1
35633329655206000f, | |
43 0.138431615032452000f, 0.141263291140272000f, 0.144128470858058000f, 0.1
47027266497595000f, | |
44 0.149959789810609000f, 0.152926151996150000f, 0.155926463707827000f, 0.1
58960835060880000f, | |
45 0.162029375639111000f, 0.165132194501668000f, 0.168269400189691000f, 0.1
71441100732823000f, | |
46 0.174647403655585000f, 0.177888415983629000f, 0.181164244249860000f, 0.1
84474994500441000f, | |
47 0.187820772300678000f, 0.191201682740791000f, 0.194617830441576000f, 0.1
98069319559949000f, | |
48 0.201556253794397000f, 0.205078736390317000f, 0.208636870145256000f, 0.2
12230757414055000f, | |
49 0.215860500113899000f, 0.219526199729269000f, 0.223227957316809000f, 0.2
26965873510098000f, | |
50 0.230740048524349000f, 0.234550582161005000f, 0.238397573812271000f, 0.2
42281122465555000f, | |
51 0.246201326707835000f, 0.250158284729953000f, 0.254152094330827000f, 0.2
58182852921596000f, | |
52 0.262250657529696000f, 0.266355604802862000f, 0.270497791013066000f, 0.2
74677312060385000f, | |
53 0.278894263476810000f, 0.283148740429992000f, 0.287440837726918000f, 0.2
91770649817536000f, | |
54 0.296138270798321000f, 0.300543794415777000f, 0.304987314069886000f, 0.3
09468922817509000f, | |
55 0.313988713375718000f, 0.318546778125092000f, 0.323143209112951000f, 0.3
27778098056542000f, | |
56 0.332451536346179000f, 0.337163615048330000f, 0.341914424908661000f, 0.3
46704056355030000f, | |
57 0.351532599500439000f, 0.356400144145944000f, 0.361306779783510000f, 0.3
66252595598840000f, | |
58 0.371237680474149000f, 0.376262122990906000f, 0.381326011432530000f, 0.3
86429433787049000f, | |
59 0.391572477749723000f, 0.396755230725627000f, 0.401977779832196000f, 0.4
07240211901737000f, | |
60 0.412542613483904000f, 0.417885070848138000f, 0.423267669986072000f, 0.4
28690496613907000f, | |
61 0.434153636174749000f, 0.439657173840919000f, 0.445201194516228000f, 0.4
50785782838223000f, | |
62 0.456411023180405000f, 0.462076999654407000f, 0.467783796112159000f, 0.4
73531496148010000f, | |
63 0.479320183100827000f, 0.485149940056070000f, 0.491020849847836000f, 0.4
96932995060870000f, | |
64 0.502886458032569000f, 0.508881320854934000f, 0.514917665376521000f, 0.5
20995573204354000f, | |
65 0.527115125705813000f, 0.533276404010505000f, 0.539479489012107000f, 0.5
45724461370187000f, | |
66 0.552011401512000000f, 0.558340389634268000f, 0.564711505704929000f, 0.5
71124829464873000f, | |
67 0.577580440429651000f, 0.584078417891164000f, 0.590618840919337000f, 0.5
97201788363763000f, | |
68 0.603827338855338000f, 0.610495570807865000f, 0.617206562419651000f, 0.6
23960391675076000f, | |
69 0.630757136346147000f, 0.637596873994033000f, 0.644479681970582000f, 0.6
51405637419824000f, | |
70 0.658374817279448000f, 0.665387298282272000f, 0.672443156957688000f, 0.6
79542469633094000f, | |
71 0.686685312435314000f, 0.693871761291990000f, 0.701101891932973000f, 0.7
08375779891687000f, | |
72 0.715693500506481000f, 0.723055128921969000f, 0.730460740090354000f, 0.7
37910408772731000f, | |
73 0.745404209540387000f, 0.752942216776078000f, 0.760524504675292000f, 0.7
68151147247507000f, | |
74 0.775822218317423000f, 0.783537791526194000f, 0.791297940332630000f, 0.7
99102738014409000f, | |
75 0.806952257669252000f, 0.814846572216101000f, 0.822785754396284000f, 0.8
30769876774655000f, | |
76 0.838799011740740000f, 0.846873231509858000f, 0.854992608124234000f, 0.8
63157213454102000f, | |
77 0.871367119198797000f, 0.879622396887832000f, 0.887923117881966000f, 0.8
96269353374266000f, | |
78 0.904661174391149000f, 0.913098651793419000f, 0.921581856277295000f, 0.9
30110858375424000f, | |
79 0.938685728457888000f, 0.947306536733200000f, 0.955973353249286000f, 0.9
64686247894465000f, | |
80 0.973445290398413000f, 0.982250550333117000f, 0.991102097113830000f, 1.0
00000000000000000f, | |
81 }; | |
82 | |
83 extern const float linear_from_2dot2[256] = { | |
84 0.000000000000000000f, 0.000005077051900662f, 0.000023328004666099f, 0.0
00056921765712193f, | |
85 0.000107187362341244f, 0.000175123977503027f, 0.000261543754548491f, 0.0
00367136269815943f, | |
86 0.000492503787191433f, 0.000638182842167022f, 0.000804658499513058f, 0.0
00992374304074325f, | |
87 0.001201739522438400f, 0.001433134589671860f, 0.001686915316789280f, 0.0
01963416213396470f, | |
88 0.002262953160706430f, 0.002585825596234170f, 0.002932318323938360f, 0.0
03302703032003640f, | |
89 0.003697239578900130f, 0.004116177093282750f, 0.004559754922526020f, 0.0
05028203456855540f, | |
90 0.005521744850239660f, 0.006040593654849810f, 0.006584957382581690f, 0.0
07155037004573030f, | |
91 0.007751027397660610f, 0.008373117745148580f, 0.009021491898012130f, 0.0
09696328701658230f, | |
92 0.010397802292555300f, 0.011126082368383200f, 0.011881334434813700f, 0.0
12663720031582100f, | |
93 0.013473396940142600f, 0.014310519374884100f, 0.015175238159625200f, 0.0
16067700890886900f, | |
94 0.016988052089250000f, 0.017936433339950200f, 0.018912983423721500f, 0.0
19917838438785700f, | |
95 0.020951131914781100f, 0.022012994919336500f, 0.023103556157921400f, 0.0
24222942067534200f, | |
96 0.025371276904734600f, 0.026548682828472900f, 0.027755279978126000f, 0.0
28991186547107800f, | |
97 0.030256518852388700f, 0.031551391400226400f, 0.032875916948383800f, 0.0
34230206565082000f, | |
98 0.035614369684918800f, 0.037028514161960200f, 0.038472746320194600f, 0.0
39947171001525600f, | |
99 0.041451891611462500f, 0.042987010162657100f, 0.044552627316421400f, 0.0
46148842422351000f, | |
100 0.047775753556170600f, 0.049433457555908000f, 0.051122050056493400f, 0.0
52841625522879000f, | |
101 0.054592277281760300f, 0.056374097551979800f, 0.058187177473685400f, 0.0
60031607136313200f, | |
102 0.061907475605455800f, 0.063814870948677200f, 0.065753880260330100f, 0.0
67724589685424300f, | |
103 0.069727084442598800f, 0.071761448846239100f, 0.073827766327784600f, 0.0
75926119456264800f, | |
104 0.078056589958101900f, 0.080219258736215100f, 0.082414205888459200f, 0.0
84641510725429500f, | |
105 0.086901251787660300f, 0.089193506862247800f, 0.091518352998919500f, 0.0
93875866525577800f, | |
106 0.096266123063339700f, 0.098689197541094500f, 0.101145164209600000f, 0.1
03634096655137000f, | |
107 0.106156067812744000f, 0.108711149979039000f, 0.111299414824660000f, 0.1
13920933406333000f, | |
108 0.116575776178572000f, 0.119264013005047000f, 0.121985713169619000f, 0.1
24740945387051000f, | |
109 0.127529777813422000f, 0.130352278056244000f, 0.133208513184300000f, 0.1
36098549737202000f, | |
110 0.139022453734703000f, 0.141980290685736000f, 0.144972125597231000f, 0.1
47998022982685000f, | |
111 0.151058046870511000f, 0.154152260812165000f, 0.157280727890073000f, 0.1
60443510725344000f, | |
112 0.163640671485290000f, 0.166872271890766000f, 0.170138373223312000f, 0.1
73439036332135000f, | |
113 0.176774321640903000f, 0.180144289154390000f, 0.183548998464951000f, 0.1
86988508758844000f, | |
114 0.190462878822409000f, 0.193972167048093000f, 0.197516431440340000f, 0.2
01095729621346000f, | |
115 0.204710118836677000f, 0.208359655960767000f, 0.212044397502288000f, 0.2
15764399609395000f, | |
116 0.219519718074868000f, 0.223310408341127000f, 0.227136525505149000f, 0.2
30998124323267000f, | |
117 0.234895259215880000f, 0.238827984272048000f, 0.242796353254002000f, 0.2
46800419601550000f, | |
118 0.250840236436400000f, 0.254915856566385000f, 0.259027332489606000f, 0.2
63174716398492000f, | |
119 0.267358060183772000f, 0.271577415438375000f, 0.275832833461245000f, 0.2
80124365261085000f, | |
120 0.284452061560024000f, 0.288815972797219000f, 0.293216149132375000f, 0.2
97652640449211000f, | |
121 0.302125496358853000f, 0.306634766203158000f, 0.311180499057984000f, 0.3
15762743736397000f, | |
122 0.320381548791810000f, 0.325036962521076000f, 0.329729032967515000f, 0.3
34457807923889000f, | |
123 0.339223334935327000f, 0.344025661302187000f, 0.348864834082879000f, 0.3
53740900096629000f, | |
124 0.358653905926199000f, 0.363603897920553000f, 0.368590922197487000f, 0.3
73615024646202000f, | |
125 0.378676250929840000f, 0.383774646487975000f, 0.388910256539059000f, 0.3
94083126082829000f, | |
126 0.399293299902674000f, 0.404540822567962000f, 0.409825738436323000f, 0.4
15148091655907000f, | |
127 0.420507926167587000f, 0.425905285707146000f, 0.431340213807410000f, 0.4
36812753800359000f, | |
128 0.442322948819202000f, 0.447870841800410000f, 0.453456475485731000f, 0.4
59079892424160000f, | |
129 0.464741134973889000f, 0.470440245304218000f, 0.476177265397440000f, 0.4
81952237050698000f, | |
130 0.487765201877811000f, 0.493616201311074000f, 0.499505276603030000f, 0.5
05432468828216000f, | |
131 0.511397818884880000f, 0.517401367496673000f, 0.523443155214325000f, 0.5
29523222417277000f, | |
132 0.535641609315311000f, 0.541798355950137000f, 0.547993502196972000f, 0.5
54227087766085000f, | |
133 0.560499152204328000f, 0.566809734896638000f, 0.573158875067523000f, 0.5
79546611782525000f, | |
134 0.585972983949661000f, 0.592438030320847000f, 0.598941789493296000f, 0.6
05484299910907000f, | |
135 0.612065599865624000f, 0.618685727498780000f, 0.625344720802427000f, 0.6
32042617620641000f, | |
136 0.638779455650817000f, 0.645555272444935000f, 0.652370105410821000f, 0.6
59223991813387000f, | |
137 0.666116968775851000f, 0.673049073280942000f, 0.680020342172095000f, 0.6
87030812154625000f, | |
138 0.694080519796882000f, 0.701169501531402000f, 0.708297793656032000f, 0.7
15465432335048000f, | |
139 0.722672453600255000f, 0.729918893352071000f, 0.737204787360605000f, 0.7
44530171266715000f, | |
140 0.751895080583051000f, 0.759299550695091000f, 0.766743616862161000f, 0.7
74227314218442000f, | |
141 0.781750677773962000f, 0.789313742415586000f, 0.796916542907978000f, 0.8
04559113894567000f, | |
142 0.812241489898490000f, 0.819963705323528000f, 0.827725794455034000f, 0.8
35527791460841000f, | |
143 0.843369730392169000f, 0.851251645184515000f, 0.859173569658532000f, 0.8
67135537520905000f, | |
144 0.875137582365205000f, 0.883179737672745000f, 0.891262036813419000f, 0.8
99384513046529000f, | |
145 0.907547199521614000f, 0.915750129279253000f, 0.923993335251873000f, 0.9
32276850264543000f, | |
146 0.940600707035753000f, 0.948964938178195000f, 0.957369576199527000f, 0.9
65814653503130000f, | |
147 0.974300202388861000f, 0.982826255053791000f, 0.991392843592940000f, 1.0
00000000000000000f, | |
148 }; | |
149 | |
150 static Sk4f linear_to_2dot2(const Sk4f& x) { | 19 static Sk4f linear_to_2dot2(const Sk4f& x) { |
151 // x^(29/64) is a very good approximation of the true value, x^(1/2.2). | 20 // x^(29/64) is a very good approximation of the true value, x^(1/2.2). |
152 auto x2 = x.rsqrt(), // x^(-1/2) | 21 auto x2 = x.rsqrt(), // x^(-1/2) |
153 x32 = x2.rsqrt().rsqrt().rsqrt().rsqrt(), // x^(-1/32) | 22 x32 = x2.rsqrt().rsqrt().rsqrt().rsqrt(), // x^(-1/32) |
154 x64 = x32.rsqrt(); // x^(+1/64) | 23 x64 = x32.rsqrt(); // x^(+1/64) |
155 | 24 |
156 // 29 = 32 - 2 - 1 | 25 // 29 = 32 - 2 - 1 |
157 return 255.0f * x2.invert() * x32 * x64.invert(); | 26 return 255.0f * x2.invert() * x32 * x64.invert(); |
158 } | 27 } |
159 | 28 |
(...skipping 95 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
255 *dst = rgba; | 124 *dst = rgba; |
256 | 125 |
257 dst += 1; | 126 dst += 1; |
258 src += 1; | 127 src += 1; |
259 len -= 1; | 128 len -= 1; |
260 } | 129 } |
261 } | 130 } |
262 | 131 |
263 static void color_xform_RGB1_srgb_to_2dot2(uint32_t* dst, const uint32_t* src, i
nt len, | 132 static void color_xform_RGB1_srgb_to_2dot2(uint32_t* dst, const uint32_t* src, i
nt len, |
264 const float matrix[16]) { | 133 const float matrix[16]) { |
265 color_xform_RGB1<linear_from_srgb, linear_to_2dot2>(dst, src, len, matrix); | 134 color_xform_RGB1<sk_linear_from_srgb, linear_to_2dot2>(dst, src, len, matrix
); |
266 } | 135 } |
267 | 136 |
268 static void color_xform_RGB1_2dot2_to_2dot2(uint32_t* dst, const uint32_t* src,
int len, | 137 static void color_xform_RGB1_2dot2_to_2dot2(uint32_t* dst, const uint32_t* src,
int len, |
269 const float matrix[16]) { | 138 const float matrix[16]) { |
270 color_xform_RGB1<linear_from_2dot2, linear_to_2dot2>(dst, src, len, matrix); | 139 color_xform_RGB1<sk_linear_from_2dot2, linear_to_2dot2>(dst, src, len, matri
x); |
271 } | 140 } |
272 | 141 |
273 static void color_xform_RGB1_srgb_to_srgb(uint32_t* dst, const uint32_t* src, in
t len, | 142 static void color_xform_RGB1_srgb_to_srgb(uint32_t* dst, const uint32_t* src, in
t len, |
274 const float matrix[16]) { | 143 const float matrix[16]) { |
275 color_xform_RGB1<linear_from_srgb, linear_to_srgb>(dst, src, len, matrix); | 144 color_xform_RGB1<sk_linear_from_srgb, linear_to_srgb>(dst, src, len, matrix)
; |
276 } | 145 } |
277 | 146 |
278 static void color_xform_RGB1_2dot2_to_srgb(uint32_t* dst, const uint32_t* src, i
nt len, | 147 static void color_xform_RGB1_2dot2_to_srgb(uint32_t* dst, const uint32_t* src, i
nt len, |
279 const float matrix[16]) { | 148 const float matrix[16]) { |
280 color_xform_RGB1<linear_from_2dot2, linear_to_srgb>(dst, src, len, matrix); | 149 color_xform_RGB1<sk_linear_from_2dot2, linear_to_srgb>(dst, src, len, matrix
); |
281 } | 150 } |
282 | 151 |
283 } // namespace SK_OPTS_NS | 152 } // namespace SK_OPTS_NS |
284 | 153 |
285 #endif // SkColorXform_opts_DEFINED | 154 #endif // SkColorXform_opts_DEFINED |
OLD | NEW |