1 /*
2 * Copyright 2015 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "SkTableColorFilter.h"
9
10 #include "SkBitmap.h"
11 #include "SkColorPriv.h"
12 #include "SkReadBuffer.h"
13 #include "SkString.h"
14 #include "SkUnPreMultiply.h"
15 #include "SkWriteBuffer.h"
16
17 class SkTable_ColorFilter : public SkColorFilter {
18 public:
SkTable_ColorFilter(const uint8_t tableA[],const uint8_t tableR[],const uint8_t tableG[],const uint8_t tableB[])19 SkTable_ColorFilter(const uint8_t tableA[], const uint8_t tableR[],
20 const uint8_t tableG[], const uint8_t tableB[]) {
21 fBitmap = nullptr;
22 fFlags = 0;
23
24 uint8_t* dst = fStorage;
25 if (tableA) {
26 memcpy(dst, tableA, 256);
27 dst += 256;
28 fFlags |= kA_Flag;
29 }
30 if (tableR) {
31 memcpy(dst, tableR, 256);
32 dst += 256;
33 fFlags |= kR_Flag;
34 }
35 if (tableG) {
36 memcpy(dst, tableG, 256);
37 dst += 256;
38 fFlags |= kG_Flag;
39 }
40 if (tableB) {
41 memcpy(dst, tableB, 256);
42 fFlags |= kB_Flag;
43 }
44 }
45
~SkTable_ColorFilter()46 virtual ~SkTable_ColorFilter() { delete fBitmap; }
47
48 bool asComponentTable(SkBitmap* table) const override;
49 sk_sp<SkColorFilter> makeComposed(sk_sp<SkColorFilter> inner) const override;
50
51 #if SK_SUPPORT_GPU
52 sk_sp<GrFragmentProcessor> asFragmentProcessor(GrContext*) const override;
53 #endif
54
55 void filterSpan(const SkPMColor src[], int count, SkPMColor dst[]) const override;
56
57 SK_TO_STRING_OVERRIDE()
58
59 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTable_ColorFilter)
60
61 enum {
62 kA_Flag = 1 << 0,
63 kR_Flag = 1 << 1,
64 kG_Flag = 1 << 2,
65 kB_Flag = 1 << 3,
66 };
67
68 protected:
69 void flatten(SkWriteBuffer&) const override;
70
71 private:
72 mutable const SkBitmap* fBitmap; // lazily allocated
73
74 uint8_t fStorage[256 * 4];
75 unsigned fFlags;
76
77 friend class SkTableColorFilter;
78
79 typedef SkColorFilter INHERITED;
80 };
81
82 static const uint8_t gIdentityTable[] = {
83 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
84 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
85 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
86 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
87 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
88 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F,
89 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
90 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F,
91 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
92 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F,
93 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
94 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F,
95 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
96 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
97 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
98 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F,
99 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
100 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F,
101 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
102 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F,
103 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7,
104 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF,
105 0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7,
106 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF,
107 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
108 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF,
109 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7,
110 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
111 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
112 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
113 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
114 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF
115 };
116
filterSpan(const SkPMColor src[],int count,SkPMColor dst[]) const117 void SkTable_ColorFilter::filterSpan(const SkPMColor src[], int count, SkPMColor dst[]) const {
118 const uint8_t* table = fStorage;
119 const uint8_t* tableA = gIdentityTable;
120 const uint8_t* tableR = gIdentityTable;
121 const uint8_t* tableG = gIdentityTable;
122 const uint8_t* tableB = gIdentityTable;
123 if (fFlags & kA_Flag) {
124 tableA = table; table += 256;
125 }
126 if (fFlags & kR_Flag) {
127 tableR = table; table += 256;
128 }
129 if (fFlags & kG_Flag) {
130 tableG = table; table += 256;
131 }
132 if (fFlags & kB_Flag) {
133 tableB = table;
134 }
135
136 const SkUnPreMultiply::Scale* scaleTable = SkUnPreMultiply::GetScaleTable();
137 for (int i = 0; i < count; ++i) {
138 SkPMColor c = src[i];
139 unsigned a, r, g, b;
140 if (0 == c) {
141 a = r = g = b = 0;
142 } else {
143 a = SkGetPackedA32(c);
144 r = SkGetPackedR32(c);
145 g = SkGetPackedG32(c);
146 b = SkGetPackedB32(c);
147
148 if (a < 255) {
149 SkUnPreMultiply::Scale scale = scaleTable[a];
150 r = SkUnPreMultiply::ApplyScale(scale, r);
151 g = SkUnPreMultiply::ApplyScale(scale, g);
152 b = SkUnPreMultiply::ApplyScale(scale, b);
153 }
154 }
155 dst[i] = SkPremultiplyARGBInline(tableA[a], tableR[r],
156 tableG[g], tableB[b]);
157 }
158 }
159
160 #ifndef SK_IGNORE_TO_STRING
toString(SkString * str) const161 void SkTable_ColorFilter::toString(SkString* str) const {
162 const uint8_t* table = fStorage;
163 const uint8_t* tableA = gIdentityTable;
164 const uint8_t* tableR = gIdentityTable;
165 const uint8_t* tableG = gIdentityTable;
166 const uint8_t* tableB = gIdentityTable;
167 if (fFlags & kA_Flag) {
168 tableA = table; table += 256;
169 }
170 if (fFlags & kR_Flag) {
171 tableR = table; table += 256;
172 }
173 if (fFlags & kG_Flag) {
174 tableG = table; table += 256;
175 }
176 if (fFlags & kB_Flag) {
177 tableB = table;
178 }
179
180 str->append("SkTable_ColorFilter (");
181
182 for (int i = 0; i < 256; ++i) {
183 str->appendf("%d: %d,%d,%d,%d\n",
184 i, tableR[i], tableG[i], tableB[i], tableA[i]);
185 }
186
187 str->append(")");
188 }
189 #endif
190
191 static const uint8_t gCountNibBits[] = {
192 0, 1, 1, 2,
193 1, 2, 2, 3,
194 1, 2, 2, 3,
195 2, 3, 3, 4
196 };
197
198 #include "SkPackBits.h"
199
flatten(SkWriteBuffer & buffer) const200 void SkTable_ColorFilter::flatten(SkWriteBuffer& buffer) const {
201 uint8_t storage[5*256];
202 int count = gCountNibBits[fFlags & 0xF];
203 size_t size = SkPackBits::Pack8(fStorage, count * 256, storage,
204 sizeof(storage));
205
206 buffer.write32(fFlags);
207 buffer.writeByteArray(storage, size);
208 }
209
CreateProc(SkReadBuffer & buffer)210 sk_sp<SkFlattenable> SkTable_ColorFilter::CreateProc(SkReadBuffer& buffer) {
211 const int flags = buffer.read32();
212 const size_t count = gCountNibBits[flags & 0xF];
213 SkASSERT(count <= 4);
214
215 uint8_t packedStorage[5*256];
216 size_t packedSize = buffer.getArrayCount();
217 if (!buffer.validate(packedSize <= sizeof(packedStorage))) {
218 return nullptr;
219 }
220 if (!buffer.readByteArray(packedStorage, packedSize)) {
221 return nullptr;
222 }
223
224 uint8_t unpackedStorage[4*256];
225 size_t unpackedSize = SkPackBits::Unpack8(packedStorage, packedSize,
226 unpackedStorage, sizeof(unpackedStorage));
227 // now check that we got the size we expected
228 if (!buffer.validate(unpackedSize == count*256)) {
229 return nullptr;
230 }
231
232 const uint8_t* a = nullptr;
233 const uint8_t* r = nullptr;
234 const uint8_t* g = nullptr;
235 const uint8_t* b = nullptr;
236 const uint8_t* ptr = unpackedStorage;
237
238 if (flags & kA_Flag) {
239 a = ptr;
240 ptr += 256;
241 }
242 if (flags & kR_Flag) {
243 r = ptr;
244 ptr += 256;
245 }
246 if (flags & kG_Flag) {
247 g = ptr;
248 ptr += 256;
249 }
250 if (flags & kB_Flag) {
251 b = ptr;
252 ptr += 256;
253 }
254 return SkTableColorFilter::MakeARGB(a, r, g, b);
255 }
256
asComponentTable(SkBitmap * table) const257 bool SkTable_ColorFilter::asComponentTable(SkBitmap* table) const {
258 if (table) {
259 if (nullptr == fBitmap) {
260 SkBitmap* bmp = new SkBitmap;
261 bmp->allocPixels(SkImageInfo::MakeA8(256, 4));
262 uint8_t* bitmapPixels = bmp->getAddr8(0, 0);
263 int offset = 0;
264 static const unsigned kFlags[] = { kA_Flag, kR_Flag, kG_Flag, kB_Flag };
265
266 for (int x = 0; x < 4; ++x) {
267 if (!(fFlags & kFlags[x])) {
268 memcpy(bitmapPixels, gIdentityTable, sizeof(gIdentityTable));
269 } else {
270 memcpy(bitmapPixels, fStorage + offset, 256);
271 offset += 256;
272 }
273 bitmapPixels += 256;
274 }
275 fBitmap = bmp;
276 }
277 *table = *fBitmap;
278 }
279 return true;
280 }
281
282 // Combines the two lookup tables so that making a lookup using res[] has
283 // the same effect as making a lookup through inner[] then outer[].
combine_tables(uint8_t res[256],const uint8_t outer[256],const uint8_t inner[256])284 static void combine_tables(uint8_t res[256], const uint8_t outer[256], const uint8_t inner[256]) {
285 for (int i = 0; i < 256; i++) {
286 res[i] = outer[inner[i]];
287 }
288 }
289
makeComposed(sk_sp<SkColorFilter> innerFilter) const290 sk_sp<SkColorFilter> SkTable_ColorFilter::makeComposed(sk_sp<SkColorFilter> innerFilter) const {
291 SkBitmap innerBM;
292 if (!innerFilter->asComponentTable(&innerBM)) {
293 return nullptr;
294 }
295
296 innerBM.lockPixels();
297 if (nullptr == innerBM.getPixels()) {
298 return nullptr;
299 }
300
301 const uint8_t* table = fStorage;
302 const uint8_t* tableA = gIdentityTable;
303 const uint8_t* tableR = gIdentityTable;
304 const uint8_t* tableG = gIdentityTable;
305 const uint8_t* tableB = gIdentityTable;
306 if (fFlags & kA_Flag) {
307 tableA = table; table += 256;
308 }
309 if (fFlags & kR_Flag) {
310 tableR = table; table += 256;
311 }
312 if (fFlags & kG_Flag) {
313 tableG = table; table += 256;
314 }
315 if (fFlags & kB_Flag) {
316 tableB = table;
317 }
318
319 uint8_t concatA[256];
320 uint8_t concatR[256];
321 uint8_t concatG[256];
322 uint8_t concatB[256];
323
324 combine_tables(concatA, tableA, innerBM.getAddr8(0, 0));
325 combine_tables(concatR, tableR, innerBM.getAddr8(0, 1));
326 combine_tables(concatG, tableG, innerBM.getAddr8(0, 2));
327 combine_tables(concatB, tableB, innerBM.getAddr8(0, 3));
328
329 return SkTableColorFilter::MakeARGB(concatA, concatR, concatG, concatB);
330 }
331
332 #if SK_SUPPORT_GPU
333
334 #include "GrContext.h"
335 #include "GrFragmentProcessor.h"
336 #include "GrInvariantOutput.h"
337 #include "GrTextureStripAtlas.h"
338 #include "SkGr.h"
339 #include "glsl/GrGLSLFragmentProcessor.h"
340 #include "glsl/GrGLSLFragmentShaderBuilder.h"
341 #include "glsl/GrGLSLProgramDataManager.h"
342 #include "glsl/GrGLSLUniformHandler.h"
343
344 class ColorTableEffect : public GrFragmentProcessor {
345 public:
346 static sk_sp<GrFragmentProcessor> Make(GrContext* context, SkBitmap bitmap, unsigned flags);
347
348 virtual ~ColorTableEffect();
349
name() const350 const char* name() const override { return "ColorTable"; }
351
atlas() const352 const GrTextureStripAtlas* atlas() const { return fAtlas; }
atlasRow() const353 int atlasRow() const { return fRow; }
354
355 private:
356 GrGLSLFragmentProcessor* onCreateGLSLInstance() const override;
357
358 void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override;
359
360 bool onIsEqual(const GrFragmentProcessor&) const override;
361
362 void onComputeInvariantOutput(GrInvariantOutput* inout) const override;
363
364 ColorTableEffect(GrTexture* texture, GrTextureStripAtlas* atlas, int row, unsigned flags);
365
366 GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
367
368 GrTextureAccess fTextureAccess;
369
370 // currently not used in shader code, just to assist onComputeInvariantOutput().
371 unsigned fFlags;
372
373 GrTextureStripAtlas* fAtlas;
374 int fRow;
375
376 typedef GrFragmentProcessor INHERITED;
377 };
378
379 class GLColorTableEffect : public GrGLSLFragmentProcessor {
380 public:
381 void emitCode(EmitArgs&) override;
382
GenKey(const GrProcessor &,const GrGLSLCaps &,GrProcessorKeyBuilder *)383 static void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessorKeyBuilder*) {}
384
385 protected:
386 void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override;
387
388 private:
389 UniformHandle fRGBAYValuesUni;
390 typedef GrGLSLFragmentProcessor INHERITED;
391 };
392
onSetData(const GrGLSLProgramDataManager & pdm,const GrProcessor & proc)393 void GLColorTableEffect::onSetData(const GrGLSLProgramDataManager& pdm, const GrProcessor& proc) {
394 // The textures are organized in a strip where the rows are ordered a, r, g, b.
395 float rgbaYValues[4];
396 const ColorTableEffect& cte = proc.cast<ColorTableEffect>();
397 if (cte.atlas()) {
398 SkScalar yDelta = cte.atlas()->getNormalizedTexelHeight();
399 rgbaYValues[3] = cte.atlas()->getYOffset(cte.atlasRow()) + SK_ScalarHalf * yDelta;
400 rgbaYValues[0] = rgbaYValues[3] + yDelta;
401 rgbaYValues[1] = rgbaYValues[0] + yDelta;
402 rgbaYValues[2] = rgbaYValues[1] + yDelta;
403 } else {
404 rgbaYValues[3] = 0.125;
405 rgbaYValues[0] = 0.375;
406 rgbaYValues[1] = 0.625;
407 rgbaYValues[2] = 0.875;
408 }
409 pdm.set4fv(fRGBAYValuesUni, 1, rgbaYValues);
410 }
411
emitCode(EmitArgs & args)412 void GLColorTableEffect::emitCode(EmitArgs& args) {
413 const char* yoffsets;
414 fRGBAYValuesUni = args.fUniformHandler->addUniform(kFragment_GrShaderFlag,
415 kVec4f_GrSLType, kDefault_GrSLPrecision,
416 "yoffsets", &yoffsets);
417 static const float kColorScaleFactor = 255.0f / 256.0f;
418 static const float kColorOffsetFactor = 1.0f / 512.0f;
419 GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
420 if (nullptr == args.fInputColor) {
421 // the input color is solid white (all ones).
422 static const float kMaxValue = kColorScaleFactor + kColorOffsetFactor;
423 fragBuilder->codeAppendf("\t\tvec4 coord = vec4(%f, %f, %f, %f);\n",
424 kMaxValue, kMaxValue, kMaxValue, kMaxValue);
425
426 } else {
427 fragBuilder->codeAppendf("\t\tfloat nonZeroAlpha = max(%s.a, .0001);\n", args.fInputColor);
428 fragBuilder->codeAppendf("\t\tvec4 coord = vec4(%s.rgb / nonZeroAlpha, nonZeroAlpha);\n",
429 args.fInputColor);
430 fragBuilder->codeAppendf("\t\tcoord = coord * %f + vec4(%f, %f, %f, %f);\n",
431 kColorScaleFactor,
432 kColorOffsetFactor, kColorOffsetFactor,
433 kColorOffsetFactor, kColorOffsetFactor);
434 }
435
436 SkString coord;
437
438 fragBuilder->codeAppendf("\t\t%s.a = ", args.fOutputColor);
439 coord.printf("vec2(coord.a, %s.a)", yoffsets);
440 fragBuilder->appendTextureLookup(args.fTexSamplers[0], coord.c_str());
441 fragBuilder->codeAppend(".a;\n");
442
443 fragBuilder->codeAppendf("\t\t%s.r = ", args.fOutputColor);
444 coord.printf("vec2(coord.r, %s.r)", yoffsets);
445 fragBuilder->appendTextureLookup(args.fTexSamplers[0], coord.c_str());
446 fragBuilder->codeAppend(".a;\n");
447
448 fragBuilder->codeAppendf("\t\t%s.g = ", args.fOutputColor);
449 coord.printf("vec2(coord.g, %s.g)", yoffsets);
450 fragBuilder->appendTextureLookup(args.fTexSamplers[0], coord.c_str());
451 fragBuilder->codeAppend(".a;\n");
452
453 fragBuilder->codeAppendf("\t\t%s.b = ", args.fOutputColor);
454 coord.printf("vec2(coord.b, %s.b)", yoffsets);
455 fragBuilder->appendTextureLookup(args.fTexSamplers[0], coord.c_str());
456 fragBuilder->codeAppend(".a;\n");
457
458 fragBuilder->codeAppendf("\t\t%s.rgb *= %s.a;\n", args.fOutputColor, args.fOutputColor);
459 }
460
461 ///////////////////////////////////////////////////////////////////////////////
Make(GrContext * context,SkBitmap bitmap,unsigned flags)462 sk_sp<GrFragmentProcessor> ColorTableEffect::Make(GrContext* context, SkBitmap bitmap,
463 unsigned flags) {
464
465 GrTextureStripAtlas::Desc desc;
466 desc.fWidth = bitmap.width();
467 desc.fHeight = 128;
468 desc.fRowHeight = bitmap.height();
469 desc.fContext = context;
470 desc.fConfig = SkImageInfo2GrPixelConfig(bitmap.info(), *context->caps());
471 GrTextureStripAtlas* atlas = GrTextureStripAtlas::GetAtlas(desc);
472 int row = atlas->lockRow(bitmap);
473 SkAutoTUnref<GrTexture> texture;
474 if (-1 == row) {
475 atlas = nullptr;
476 texture.reset(GrRefCachedBitmapTexture(context, bitmap, GrTextureParams::ClampNoFilter(),
477 SkSourceGammaTreatment::kRespect));
478 } else {
479 texture.reset(SkRef(atlas->getTexture()));
480 }
481
482 return sk_sp<GrFragmentProcessor>(new ColorTableEffect(texture, atlas, row, flags));
483 }
484
ColorTableEffect(GrTexture * texture,GrTextureStripAtlas * atlas,int row,unsigned flags)485 ColorTableEffect::ColorTableEffect(GrTexture* texture, GrTextureStripAtlas* atlas, int row,
486 unsigned flags)
487 : fTextureAccess(texture)
488 , fFlags(flags)
489 , fAtlas(atlas)
490 , fRow(row) {
491 this->initClassID<ColorTableEffect>();
492 this->addTextureAccess(&fTextureAccess);
493 }
494
~ColorTableEffect()495 ColorTableEffect::~ColorTableEffect() {
496 if (fAtlas) {
497 fAtlas->unlockRow(fRow);
498 }
499 }
500
onGetGLSLProcessorKey(const GrGLSLCaps & caps,GrProcessorKeyBuilder * b) const501 void ColorTableEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps,
502 GrProcessorKeyBuilder* b) const {
503 GLColorTableEffect::GenKey(*this, caps, b);
504 }
505
onCreateGLSLInstance() const506 GrGLSLFragmentProcessor* ColorTableEffect::onCreateGLSLInstance() const {
507 return new GLColorTableEffect;
508 }
509
onIsEqual(const GrFragmentProcessor & other) const510 bool ColorTableEffect::onIsEqual(const GrFragmentProcessor& other) const {
511 // For non-atlased instances, the texture (compared by base class) is sufficient to
512 // differentiate different tables. For atlased instances we ensure they are using the
513 // same row.
514 const ColorTableEffect& that = other.cast<ColorTableEffect>();
515 SkASSERT(SkToBool(fAtlas) == SkToBool(that.fAtlas));
516 // Ok to always do this comparison since both would be -1 if non-atlased.
517 return fRow == that.fRow;
518 }
519
onComputeInvariantOutput(GrInvariantOutput * inout) const520 void ColorTableEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const {
521 // If we kept the table in the effect then we could actually run known inputs through the
522 // table.
523 GrColorComponentFlags invalidateFlags = kNone_GrColorComponentFlags;
524 if (fFlags & SkTable_ColorFilter::kR_Flag) {
525 invalidateFlags |= kR_GrColorComponentFlag;
526 }
527 if (fFlags & SkTable_ColorFilter::kG_Flag) {
528 invalidateFlags |= kG_GrColorComponentFlag;
529 }
530 if (fFlags & SkTable_ColorFilter::kB_Flag) {
531 invalidateFlags |= kB_GrColorComponentFlag;
532 }
533 if (fFlags & SkTable_ColorFilter::kA_Flag) {
534 invalidateFlags |= kA_GrColorComponentFlag;
535 }
536 inout->invalidateComponents(invalidateFlags, GrInvariantOutput::kWill_ReadInput);
537 }
538
539 ///////////////////////////////////////////////////////////////////////////////
540
541 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(ColorTableEffect);
542
TestCreate(GrProcessorTestData * d)543 sk_sp<GrFragmentProcessor> ColorTableEffect::TestCreate(GrProcessorTestData* d) {
544 int flags = 0;
545 uint8_t luts[256][4];
546 do {
547 for (int i = 0; i < 4; ++i) {
548 flags |= d->fRandom->nextBool() ? (1 << i): 0;
549 }
550 } while (!flags);
551 for (int i = 0; i < 4; ++i) {
552 if (flags & (1 << i)) {
553 for (int j = 0; j < 256; ++j) {
554 luts[j][i] = SkToU8(d->fRandom->nextBits(8));
555 }
556 }
557 }
558 auto filter(SkTableColorFilter::MakeARGB(
559 (flags & (1 << 0)) ? luts[0] : nullptr,
560 (flags & (1 << 1)) ? luts[1] : nullptr,
561 (flags & (1 << 2)) ? luts[2] : nullptr,
562 (flags & (1 << 3)) ? luts[3] : nullptr
563 ));
564
565 sk_sp<GrFragmentProcessor> fp = filter->asFragmentProcessor(d->fContext);
566 SkASSERT(fp);
567 return fp;
568 }
569
asFragmentProcessor(GrContext * context) const570 sk_sp<GrFragmentProcessor> SkTable_ColorFilter::asFragmentProcessor(GrContext* context) const {
571 SkBitmap bitmap;
572 this->asComponentTable(&bitmap);
573
574 return ColorTableEffect::Make(context, bitmap, fFlags);
575 }
576
577 #endif // SK_SUPPORT_GPU
578
579 ///////////////////////////////////////////////////////////////////////////////
580
581 #ifdef SK_CPU_BENDIAN
582 #else
583 #define SK_A32_INDEX (3 - (SK_A32_SHIFT >> 3))
584 #define SK_R32_INDEX (3 - (SK_R32_SHIFT >> 3))
585 #define SK_G32_INDEX (3 - (SK_G32_SHIFT >> 3))
586 #define SK_B32_INDEX (3 - (SK_B32_SHIFT >> 3))
587 #endif
588
589 ///////////////////////////////////////////////////////////////////////////////
590
Make(const uint8_t table[256])591 sk_sp<SkColorFilter> SkTableColorFilter::Make(const uint8_t table[256]) {
592 return sk_make_sp<SkTable_ColorFilter>(table, table, table, table);
593 }
594
MakeARGB(const uint8_t tableA[256],const uint8_t tableR[256],const uint8_t tableG[256],const uint8_t tableB[256])595 sk_sp<SkColorFilter> SkTableColorFilter::MakeARGB(const uint8_t tableA[256],
596 const uint8_t tableR[256],
597 const uint8_t tableG[256],
598 const uint8_t tableB[256]) {
599 return sk_make_sp<SkTable_ColorFilter>(tableA, tableR, tableG, tableB);
600 }
601
602 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkTableColorFilter)
603 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkTable_ColorFilter)
604 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END
605