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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 #include "SkBlitter.h" | 8 #include "SkBlitter.h" |
9 #include "SkColor.h" | 9 #include "SkColor.h" |
10 #include "SkColorFilter.h" | 10 #include "SkColorFilter.h" |
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34 | 34 |
35 void blitH (int x, int y, int w) override; | 35 void blitH (int x, int y, int w) override; |
36 void blitAntiH(int x, int y, const SkAlpha[], const int16_t[]) override; | 36 void blitAntiH(int x, int y, const SkAlpha[], const int16_t[]) override; |
37 void blitMask (const SkMask&, const SkIRect& clip) override; | 37 void blitMask (const SkMask&, const SkIRect& clip) override; |
38 | 38 |
39 // TODO: The default implementations of the other blits look fine, | 39 // TODO: The default implementations of the other blits look fine, |
40 // but some of them like blitV could probably benefit from custom | 40 // but some of them like blitV could probably benefit from custom |
41 // blits using something like a SkRasterPipeline::runFew() method. | 41 // blits using something like a SkRasterPipeline::runFew() method. |
42 | 42 |
43 private: | 43 private: |
| 44 void append_load_d(SkRasterPipeline*, const void*) const; |
| 45 void append_store (SkRasterPipeline*, void*) const; |
| 46 |
44 SkPixmap fDst; | 47 SkPixmap fDst; |
45 SkRasterPipeline fShader, fColorFilter, fXfermode; | 48 SkRasterPipeline fShader, fColorFilter, fXfermode; |
46 SkPM4f fPaintColor; | 49 SkPM4f fPaintColor; |
47 | 50 |
48 typedef SkBlitter INHERITED; | 51 typedef SkBlitter INHERITED; |
49 }; | 52 }; |
50 | 53 |
51 SkBlitter* SkCreateRasterPipelineBlitter(const SkPixmap& dst, | 54 SkBlitter* SkCreateRasterPipelineBlitter(const SkPixmap& dst, |
52 const SkPaint& paint, | 55 const SkPaint& paint, |
53 SkTBlitterAllocator* alloc) { | 56 SkTBlitterAllocator* alloc) { |
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117 auto ptr = st->ctx<const uint8_t*>() + x; | 120 auto ptr = st->ctx<const uint8_t*>() + x; |
118 Sk4f c = *ptr * (1/255.0f); | 121 Sk4f c = *ptr * (1/255.0f); |
119 | 122 |
120 r = lerp(dr, r, c); | 123 r = lerp(dr, r, c); |
121 g = lerp(dg, g, c); | 124 g = lerp(dg, g, c); |
122 b = lerp(db, b, c); | 125 b = lerp(db, b, c); |
123 a = lerp(da, a, c); | 126 a = lerp(da, a, c); |
124 st->next(x, r,g,b,a, dr,dg,db,da); | 127 st->next(x, r,g,b,a, dr,dg,db,da); |
125 } | 128 } |
126 | 129 |
127 static void upscale_lcd16(const Sk4h& lcd16, Sk4f* r, Sk4f* g, Sk4f* b) { | 130 static void from_565(const Sk4h& _565, Sk4f* r, Sk4f* g, Sk4f* b) { |
128 Sk4i _32_bit = SkNx_cast<int>(lcd16); | 131 Sk4i _32_bit = SkNx_cast<int>(_565); |
129 | 132 |
130 *r = SkNx_cast<float>(_32_bit & SK_R16_MASK_IN_PLACE) * (1.0f / SK_R16_MASK_
IN_PLACE); | 133 *r = SkNx_cast<float>(_32_bit & SK_R16_MASK_IN_PLACE) * (1.0f / SK_R16_MASK_
IN_PLACE); |
131 *g = SkNx_cast<float>(_32_bit & SK_G16_MASK_IN_PLACE) * (1.0f / SK_G16_MASK_
IN_PLACE); | 134 *g = SkNx_cast<float>(_32_bit & SK_G16_MASK_IN_PLACE) * (1.0f / SK_G16_MASK_
IN_PLACE); |
132 *b = SkNx_cast<float>(_32_bit & SK_B16_MASK_IN_PLACE) * (1.0f / SK_B16_MASK_
IN_PLACE); | 135 *b = SkNx_cast<float>(_32_bit & SK_B16_MASK_IN_PLACE) * (1.0f / SK_B16_MASK_
IN_PLACE); |
133 } | 136 } |
134 | 137 |
| 138 static Sk4h to_565(const Sk4f& r, const Sk4f& g, const Sk4f& b) { |
| 139 return SkNx_cast<uint16_t>( Sk4f_round(r * SK_R16_MASK) << SK_R16_SHIFT |
| 140 | Sk4f_round(g * SK_G16_MASK) << SK_G16_SHIFT |
| 141 | Sk4f_round(b * SK_B16_MASK) << SK_B16_SHIFT); |
| 142 } |
| 143 |
135 // s' = d(1-c) + sc, 4 pixels at a time for 565 coverage. | 144 // s' = d(1-c) + sc, 4 pixels at a time for 565 coverage. |
136 static void SK_VECTORCALL lerp_lcd16(SkRasterPipeline::Stage* st, size_t x, | 145 static void SK_VECTORCALL lerp_lcd16(SkRasterPipeline::Stage* st, size_t x, |
137 Sk4f r, Sk4f g, Sk4f b, Sk4f a, | 146 Sk4f r, Sk4f g, Sk4f b, Sk4f a, |
138 Sk4f dr, Sk4f dg, Sk4f db, Sk4f da) { | 147 Sk4f dr, Sk4f dg, Sk4f db, Sk4f da) { |
139 auto ptr = st->ctx<const uint16_t*>() + x; | 148 auto ptr = st->ctx<const uint16_t*>() + x; |
140 Sk4f cr, cg, cb; | 149 Sk4f cr, cg, cb; |
141 upscale_lcd16(Sk4h::Load(ptr), &cr, &cg, &cb); | 150 from_565(Sk4h::Load(ptr), &cr, &cg, &cb); |
142 | 151 |
143 r = lerp(dr, r, cr); | 152 r = lerp(dr, r, cr); |
144 g = lerp(dg, g, cg); | 153 g = lerp(dg, g, cg); |
145 b = lerp(db, b, cb); | 154 b = lerp(db, b, cb); |
146 a = 1.0f; | 155 a = 1.0f; |
147 st->next(x, r,g,b,a, dr,dg,db,da); | 156 st->next(x, r,g,b,a, dr,dg,db,da); |
148 } | 157 } |
149 | 158 |
150 // Tail variant of lerp_lcd16() handling 1 pixel at a time. | 159 // Tail variant of lerp_lcd16() handling 1 pixel at a time. |
151 static void SK_VECTORCALL lerp_lcd16_1(SkRasterPipeline::Stage* st, size_t x, | 160 static void SK_VECTORCALL lerp_lcd16_1(SkRasterPipeline::Stage* st, size_t x, |
152 Sk4f r, Sk4f g, Sk4f b, Sk4f a, | 161 Sk4f r, Sk4f g, Sk4f b, Sk4f a, |
153 Sk4f dr, Sk4f dg, Sk4f db, Sk4f da) { | 162 Sk4f dr, Sk4f dg, Sk4f db, Sk4f da) { |
154 auto ptr = st->ctx<const uint16_t*>() + x; | 163 auto ptr = st->ctx<const uint16_t*>() + x; |
155 Sk4f cr, cg, cb; | 164 Sk4f cr, cg, cb; |
156 upscale_lcd16({*ptr,0,0,0}, &cr, &cg, &cb); | 165 from_565({*ptr,0,0,0}, &cr, &cg, &cb); |
157 | 166 |
158 r = lerp(dr, r, cr); | 167 r = lerp(dr, r, cr); |
159 g = lerp(dg, g, cg); | 168 g = lerp(dg, g, cg); |
160 b = lerp(db, b, cb); | 169 b = lerp(db, b, cb); |
161 a = 1.0f; | 170 a = 1.0f; |
162 st->next(x, r,g,b,a, dr,dg,db,da); | 171 st->next(x, r,g,b,a, dr,dg,db,da); |
163 } | 172 } |
164 | 173 |
| 174 // Load 4 565 dst pixels. |
| 175 static void SK_VECTORCALL load_d_565(SkRasterPipeline::Stage* st, size_t x, |
| 176 Sk4f r, Sk4f g, Sk4f b, Sk4f a, |
| 177 Sk4f dr, Sk4f dg, Sk4f db, Sk4f da) { |
| 178 auto ptr = st->ctx<const uint16_t*>() + x; |
| 179 |
| 180 from_565(Sk4h::Load(ptr), &dr,&dg,&db); |
| 181 da = 1.0f; |
| 182 st->next(x, r,g,b,a, dr,dg,db,da); |
| 183 } |
| 184 |
| 185 // Load 1 565 dst pixel. |
| 186 static void SK_VECTORCALL load_d_565_1(SkRasterPipeline::Stage* st, size_t x, |
| 187 Sk4f r, Sk4f g, Sk4f b, Sk4f a, |
| 188 Sk4f dr, Sk4f dg, Sk4f db, Sk4f da) { |
| 189 auto ptr = st->ctx<const uint16_t*>() + x; |
| 190 |
| 191 from_565({*ptr,0,0,0}, &dr,&dg,&db); |
| 192 da = 1.0f; |
| 193 st->next(x, r,g,b,a, dr,dg,db,da); |
| 194 } |
| 195 |
| 196 // Store 4 565 pixels. |
| 197 static void SK_VECTORCALL store_565(SkRasterPipeline::Stage* st, size_t x, |
| 198 Sk4f r, Sk4f g, Sk4f b, Sk4f a, |
| 199 Sk4f dr, Sk4f dg, Sk4f db, Sk4f da) { |
| 200 auto ptr = st->ctx<uint16_t*>() + x; |
| 201 to_565(r,g,b).store(ptr); |
| 202 } |
| 203 |
| 204 // Store 1 565 pixel. |
| 205 static void SK_VECTORCALL store_565_1(SkRasterPipeline::Stage* st, size_t x, |
| 206 Sk4f r, Sk4f g, Sk4f b, Sk4f a, |
| 207 Sk4f dr, Sk4f dg, Sk4f db, Sk4f da) { |
| 208 auto ptr = st->ctx<uint16_t*>() + x; |
| 209 *ptr = to_565(r,g,b)[0]; |
| 210 } |
| 211 |
165 // Load 4 8-bit sRGB pixels from SkPMColor order to RGBA. | 212 // Load 4 8-bit sRGB pixels from SkPMColor order to RGBA. |
166 static void SK_VECTORCALL load_d_srgb(SkRasterPipeline::Stage* st, size_t x, | 213 static void SK_VECTORCALL load_d_srgb(SkRasterPipeline::Stage* st, size_t x, |
167 Sk4f r, Sk4f g, Sk4f b, Sk4f a, | 214 Sk4f r, Sk4f g, Sk4f b, Sk4f a, |
168 Sk4f dr, Sk4f dg, Sk4f db, Sk4f da) { | 215 Sk4f dr, Sk4f dg, Sk4f db, Sk4f da) { |
169 auto ptr = st->ctx<const uint32_t*>() + x; | 216 auto ptr = st->ctx<const uint32_t*>() + x; |
170 | 217 |
171 dr = { sk_linear_from_srgb[(ptr[0] >> SK_R32_SHIFT) & 0xff], | 218 dr = { sk_linear_from_srgb[(ptr[0] >> SK_R32_SHIFT) & 0xff], |
172 sk_linear_from_srgb[(ptr[1] >> SK_R32_SHIFT) & 0xff], | 219 sk_linear_from_srgb[(ptr[1] >> SK_R32_SHIFT) & 0xff], |
173 sk_linear_from_srgb[(ptr[2] >> SK_R32_SHIFT) & 0xff], | 220 sk_linear_from_srgb[(ptr[2] >> SK_R32_SHIFT) & 0xff], |
174 sk_linear_from_srgb[(ptr[3] >> SK_R32_SHIFT) & 0xff] }; | 221 sk_linear_from_srgb[(ptr[3] >> SK_R32_SHIFT) & 0xff] }; |
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215 } | 262 } |
216 | 263 |
217 // Tail variant of store_srgb() handling 1 pixel at a time. | 264 // Tail variant of store_srgb() handling 1 pixel at a time. |
218 static void SK_VECTORCALL store_srgb_1(SkRasterPipeline::Stage* st, size_t x, | 265 static void SK_VECTORCALL store_srgb_1(SkRasterPipeline::Stage* st, size_t x, |
219 Sk4f r, Sk4f g, Sk4f b, Sk4f a, | 266 Sk4f r, Sk4f g, Sk4f b, Sk4f a, |
220 Sk4f dr, Sk4f dg, Sk4f db, Sk4f da) { | 267 Sk4f dr, Sk4f dg, Sk4f db, Sk4f da) { |
221 auto dst = st->ctx<uint32_t*>() + x; | 268 auto dst = st->ctx<uint32_t*>() + x; |
222 *dst = Sk4f_toS32(swizzle_rb_if_bgra({ r[0], g[0], b[0], a[0] })); | 269 *dst = Sk4f_toS32(swizzle_rb_if_bgra({ r[0], g[0], b[0], a[0] })); |
223 } | 270 } |
224 | 271 |
| 272 static bool supported(const SkImageInfo& info) { |
| 273 // TODO: f16, more? |
| 274 switch (info.colorType()) { |
| 275 case kN32_SkColorType: return info.gammaCloseToSRGB(); |
| 276 case kRGB_565_SkColorType: return true; |
| 277 default: return false; |
| 278 } |
| 279 } |
225 | 280 |
226 template <typename Effect> | 281 template <typename Effect> |
227 static bool append_effect_stages(const Effect* effect, SkRasterPipeline* pipelin
e) { | 282 static bool append_effect_stages(const Effect* effect, SkRasterPipeline* pipelin
e) { |
228 return !effect || effect->appendStages(pipeline); | 283 return !effect || effect->appendStages(pipeline); |
229 } | 284 } |
230 | 285 |
231 | 286 |
232 SkBlitter* SkRasterPipelineBlitter::Create(const SkPixmap& dst, | 287 SkBlitter* SkRasterPipelineBlitter::Create(const SkPixmap& dst, |
233 const SkPaint& paint, | 288 const SkPaint& paint, |
234 SkTBlitterAllocator* alloc) { | 289 SkTBlitterAllocator* alloc) { |
235 if (!dst.info().gammaCloseToSRGB()) { | 290 if (!supported(dst.info())) { |
236 return nullptr; // TODO: f16, etc. | 291 return nullptr; |
237 } | 292 } |
238 if (paint.getShader()) { | 293 if (paint.getShader()) { |
239 return nullptr; // TODO: need to work out how shaders and their context
s work | 294 return nullptr; // TODO: need to work out how shaders and their context
s work |
240 } | 295 } |
241 | 296 |
242 SkRasterPipeline shader, colorFilter, xfermode; | 297 SkRasterPipeline shader, colorFilter, xfermode; |
243 if (!append_effect_stages(paint.getColorFilter(), &colorFilter) || | 298 if (!append_effect_stages(paint.getColorFilter(), &colorFilter) || |
244 !append_effect_stages(paint.getXfermode(), &xfermode )) { | 299 !append_effect_stages(paint.getXfermode(), &xfermode )) { |
245 return nullptr; | 300 return nullptr; |
246 } | 301 } |
247 | 302 |
| 303 uint32_t paintColor = paint.getColor(); |
| 304 |
| 305 SkColor4f color; |
| 306 if (dst.info().colorSpace()) { |
| 307 color = SkColor4f::FromColor(paintColor); |
| 308 } else { |
| 309 swizzle_rb(SkNx_cast<float>(Sk4b::Load(&paintColor)) * (1/255.0f)).store
(&color); |
| 310 } |
| 311 |
248 auto blitter = alloc->createT<SkRasterPipelineBlitter>( | 312 auto blitter = alloc->createT<SkRasterPipelineBlitter>( |
249 dst, | 313 dst, |
250 shader, colorFilter, xfermode, | 314 shader, colorFilter, xfermode, |
251 SkColor4f::FromColor(paint.getColor()).premul()); | 315 color.premul()); |
252 | 316 |
253 if (!paint.getShader()) { | 317 if (!paint.getShader()) { |
254 blitter->fShader.append(constant_color, &blitter->fPaintColor); | 318 blitter->fShader.append(constant_color, &blitter->fPaintColor); |
255 } | 319 } |
256 if (!paint.getXfermode()) { | 320 if (!paint.getXfermode()) { |
257 blitter->fXfermode.append(srcover); | 321 blitter->fXfermode.append(srcover); |
258 } | 322 } |
259 | 323 |
260 return blitter; | 324 return blitter; |
261 } | 325 } |
262 | 326 |
| 327 void SkRasterPipelineBlitter::append_load_d(SkRasterPipeline* p, const void* dst
) const { |
| 328 SkASSERT(supported(fDst.info())); |
| 329 |
| 330 switch (fDst.info().colorType()) { |
| 331 case kN32_SkColorType: |
| 332 if (fDst.info().gammaCloseToSRGB()) { |
| 333 p->append(load_d_srgb, load_d_srgb_1, dst); |
| 334 } |
| 335 break; |
| 336 case kRGB_565_SkColorType: |
| 337 p->append(load_d_565, load_d_565_1, dst); |
| 338 break; |
| 339 default: break; |
| 340 } |
| 341 } |
| 342 |
| 343 void SkRasterPipelineBlitter::append_store(SkRasterPipeline* p, void* dst) const
{ |
| 344 SkASSERT(supported(fDst.info())); |
| 345 |
| 346 switch (fDst.info().colorType()) { |
| 347 case kN32_SkColorType: |
| 348 if (fDst.info().gammaCloseToSRGB()) { |
| 349 p->append(store_srgb, store_srgb_1, dst); |
| 350 } |
| 351 break; |
| 352 case kRGB_565_SkColorType: |
| 353 p->append(store_565, store_565_1, dst); |
| 354 break; |
| 355 default: break; |
| 356 } |
| 357 } |
| 358 |
263 void SkRasterPipelineBlitter::blitH(int x, int y, int w) { | 359 void SkRasterPipelineBlitter::blitH(int x, int y, int w) { |
264 auto dst = fDst.writable_addr(0,y); | 360 auto dst = fDst.writable_addr(0,y); |
265 | 361 |
266 SkRasterPipeline p; | 362 SkRasterPipeline p; |
267 p.extend(fShader); | 363 p.extend(fShader); |
268 p.extend(fColorFilter); | 364 p.extend(fColorFilter); |
269 p.append(load_d_srgb, load_d_srgb_1, dst); | 365 this->append_load_d(&p, dst); |
270 p.extend(fXfermode); | 366 p.extend(fXfermode); |
271 p.append(store_srgb, store_srgb_1, dst); | 367 this->append_store(&p, dst); |
272 | 368 |
273 p.run(x, w); | 369 p.run(x, w); |
274 } | 370 } |
275 | 371 |
276 void SkRasterPipelineBlitter::blitAntiH(int x, int y, const SkAlpha aa[], const
int16_t runs[]) { | 372 void SkRasterPipelineBlitter::blitAntiH(int x, int y, const SkAlpha aa[], const
int16_t runs[]) { |
277 auto dst = fDst.writable_addr(0,y); | 373 auto dst = fDst.writable_addr(0,y); |
278 float coverage; | 374 float coverage; |
279 | 375 |
280 SkRasterPipeline p; | 376 SkRasterPipeline p; |
281 p.extend(fShader); | 377 p.extend(fShader); |
282 p.extend(fColorFilter); | 378 p.extend(fColorFilter); |
283 p.append(load_d_srgb, load_d_srgb_1, dst); | 379 this->append_load_d(&p, dst); |
284 p.extend(fXfermode); | 380 p.extend(fXfermode); |
285 p.append(lerp_constant_float, &coverage); | 381 p.append(lerp_constant_float, &coverage); |
286 p.append(store_srgb, store_srgb_1, dst); | 382 this->append_store(&p, dst); |
287 | 383 |
288 for (int16_t run = *runs; run > 0; run = *runs) { | 384 for (int16_t run = *runs; run > 0; run = *runs) { |
289 coverage = *aa * (1/255.0f); | 385 coverage = *aa * (1/255.0f); |
290 p.run(x, run); | 386 p.run(x, run); |
291 | 387 |
292 x += run; | 388 x += run; |
293 runs += run; | 389 runs += run; |
294 aa += run; | 390 aa += run; |
295 } | 391 } |
296 } | 392 } |
297 | 393 |
298 void SkRasterPipelineBlitter::blitMask(const SkMask& mask, const SkIRect& clip)
{ | 394 void SkRasterPipelineBlitter::blitMask(const SkMask& mask, const SkIRect& clip)
{ |
299 if (mask.fFormat == SkMask::kBW_Format) { | 395 if (mask.fFormat == SkMask::kBW_Format) { |
300 // TODO: native BW masks? | 396 // TODO: native BW masks? |
301 return INHERITED::blitMask(mask, clip); | 397 return INHERITED::blitMask(mask, clip); |
302 } | 398 } |
303 | 399 |
304 int x = clip.left(); | 400 int x = clip.left(); |
305 for (int y = clip.top(); y < clip.bottom(); y++) { | 401 for (int y = clip.top(); y < clip.bottom(); y++) { |
306 auto dst = fDst.writable_addr(0,y); | 402 auto dst = fDst.writable_addr(0,y); |
307 | 403 |
308 SkRasterPipeline p; | 404 SkRasterPipeline p; |
309 p.extend(fShader); | 405 p.extend(fShader); |
310 p.extend(fColorFilter); | 406 p.extend(fColorFilter); |
311 p.append(load_d_srgb, load_d_srgb_1, dst); | 407 this->append_load_d(&p, dst); |
312 p.extend(fXfermode); | 408 p.extend(fXfermode); |
313 switch (mask.fFormat) { | 409 switch (mask.fFormat) { |
314 case SkMask::kA8_Format: | 410 case SkMask::kA8_Format: |
315 p.append(lerp_a8, lerp_a8_1, mask.getAddr8(x,y)-x); | 411 p.append(lerp_a8, lerp_a8_1, mask.getAddr8(x,y)-x); |
316 break; | 412 break; |
317 case SkMask::kLCD16_Format: | 413 case SkMask::kLCD16_Format: |
318 p.append(lerp_lcd16, lerp_lcd16_1, mask.getAddrLCD16(x,y)-x); | 414 p.append(lerp_lcd16, lerp_lcd16_1, mask.getAddrLCD16(x,y)-x); |
319 break; | 415 break; |
320 default: break; | 416 default: break; |
321 } | 417 } |
322 p.append(store_srgb, store_srgb_1, dst); | 418 this->append_store(&p, dst); |
323 | 419 |
324 p.run(x, clip.width()); | 420 p.run(x, clip.width()); |
325 } | 421 } |
326 } | 422 } |
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