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32bpp_sse_func.hpp
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1 /* $Id: 32bpp_sse_func.hpp 27020 2014-10-15 18:31:37Z rubidium $ */
2
3 /*
4 * This file is part of OpenTTD.
5 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
6 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
8 */
9
12 #ifndef BLITTER_32BPP_SSE_FUNC_HPP
13 #define BLITTER_32BPP_SSE_FUNC_HPP
14
15 #ifdef WITH_SSE
16
17 static inline void InsertFirstUint32(const uint32 value, __m128i &into)
18 {
19 #if (SSE_VERSION >= 4)
20 into = _mm_insert_epi32(into, value, 0);
21 #else
22 into = _mm_insert_epi16(into, value, 0);
23 into = _mm_insert_epi16(into, value >> 16, 1);
24 #endif
25 }
26
27 static inline void InsertSecondUint32(const uint32 value, __m128i &into)
28 {
29 #if (SSE_VERSION >= 4)
30 into = _mm_insert_epi32(into, value, 1);
31 #else
32 into = _mm_insert_epi16(into, value, 2);
33 into = _mm_insert_epi16(into, value >> 16, 3);
34 #endif
35 }
36
37 static inline void LoadUint64(const uint64 value, __m128i &into)
38 {
39 #ifdef _SQ64
40 into = _mm_cvtsi64_si128(value);
41 #else
42 #if (SSE_VERSION >= 4)
43 into = _mm_cvtsi32_si128(value);
44 InsertSecondUint32(value >> 32, into);
45 #else
46 (*(um128i*) &into).m128i_u64[0] = value;
47 #endif
48 #endif
49 }
50
51 static inline __m128i PackUnsaturated(__m128i from, const __m128i &mask)
52 {
53 #if (SSE_VERSION == 2)
54 from = _mm_and_si128(from, mask); // PAND, wipe high bytes to keep low bytes when packing
55 return _mm_packus_epi16(from, from); // PACKUSWB, pack 2 colours (with saturation)
56 #else
57 return _mm_shuffle_epi8(from, mask);
58 #endif
59 }
60
61 static inline __m128i DistributeAlpha(const __m128i from, const __m128i &mask)
62 {
63 #if (SSE_VERSION == 2)
64 __m128i alphaAB = _mm_shufflelo_epi16(from, 0x3F); // PSHUFLW, put alpha1 in front of each rgb1
65 return _mm_shufflehi_epi16(alphaAB, 0x3F); // PSHUFHW, put alpha2 in front of each rgb2
66 #else
67 return _mm_shuffle_epi8(from, mask);
68 #endif
69 }
70
71 static inline __m128i AlphaBlendTwoPixels(__m128i src, __m128i dst, const __m128i &distribution_mask, const __m128i &pack_mask)
72 {
73 __m128i srcAB = _mm_unpacklo_epi8(src, _mm_setzero_si128()); // PUNPCKLBW, expand each uint8 into uint16
74 __m128i dstAB = _mm_unpacklo_epi8(dst, _mm_setzero_si128());
75
76 __m128i alphaAB = _mm_cmpgt_epi16(srcAB, _mm_setzero_si128()); // PCMPGTW, if (alpha > 0) a++;
77 alphaAB = _mm_srli_epi16(alphaAB, 15);
78 alphaAB = _mm_add_epi16(alphaAB, srcAB);
79 alphaAB = DistributeAlpha(alphaAB, distribution_mask);
80
81 srcAB = _mm_sub_epi16(srcAB, dstAB); // PSUBW, (r - Cr)
82 srcAB = _mm_mullo_epi16(srcAB, alphaAB); // PMULLW, a*(r - Cr)
83 srcAB = _mm_srli_epi16(srcAB, 8); // PSRLW, a*(r - Cr)/256
84 srcAB = _mm_add_epi16(srcAB, dstAB); // PADDW, a*(r - Cr)/256 + Cr
85 return PackUnsaturated(srcAB, pack_mask);
86 }
87
88 /* Darken 2 pixels.
89 * rgb = rgb * ((256/4) * 4 - (alpha/4)) / ((256/4) * 4)
90 */
91 static inline __m128i DarkenTwoPixels(__m128i src, __m128i dst, const __m128i &distribution_mask, const __m128i &tr_nom_base)
92 {
93 __m128i srcAB = _mm_unpacklo_epi8(src, _mm_setzero_si128());
94 __m128i dstAB = _mm_unpacklo_epi8(dst, _mm_setzero_si128());
95 __m128i alphaAB = DistributeAlpha(srcAB, distribution_mask);
96 alphaAB = _mm_srli_epi16(alphaAB, 2); // Reduce to 64 levels of shades so the max value fits in 16 bits.
97 __m128i nom = _mm_sub_epi16(tr_nom_base, alphaAB);
98 dstAB = _mm_mullo_epi16(dstAB, nom);
99 dstAB = _mm_srli_epi16(dstAB, 8);
100 return _mm_packus_epi16(dstAB, dstAB);
101 }
102
103 IGNORE_UNINITIALIZED_WARNING_START
104 static Colour ReallyAdjustBrightness(Colour colour, uint8 brightness)
105 {
106 uint64 c16 = colour.b | (uint64) colour.g << 16 | (uint64) colour.r << 32;
107 c16 *= brightness;
108 uint64 c16_ob = c16; // Helps out of order execution.
109 c16 /= Blitter_32bppBase::DEFAULT_BRIGHTNESS;
110 c16 &= 0x01FF01FF01FFULL;
111
112 /* Sum overbright (maximum for each rgb is 508, 9 bits, -255 is changed in -256 so we just have to take the 8 lower bits into account). */
113 c16_ob = (((c16_ob >> (8 + 7)) & 0x0100010001ULL) * 0xFF) & c16;
114 const uint ob = ((uint16) c16_ob + (uint16) (c16_ob >> 16) + (uint16) (c16_ob >> 32)) / 2;
115
116 const uint32 alpha32 = colour.data & 0xFF000000;
117 __m128i ret;
118 LoadUint64(c16, ret);
119 if (ob != 0) {
120 __m128i ob128 = _mm_cvtsi32_si128(ob);
121 ob128 = _mm_shufflelo_epi16(ob128, 0xC0);
122 __m128i white = OVERBRIGHT_VALUE_MASK;
123 __m128i c128 = ret;
124 ret = _mm_subs_epu16(white, c128); // PSUBUSW, (255 - rgb)
125 ret = _mm_mullo_epi16(ret, ob128); // PMULLW, ob*(255 - rgb)
126 ret = _mm_srli_epi16(ret, 8); // PSRLW, ob*(255 - rgb)/256
127 ret = _mm_add_epi16(ret, c128); // PADDW, ob*(255 - rgb)/256 + rgb
128 }
129
130 ret = _mm_packus_epi16(ret, ret); // PACKUSWB, saturate and pack.
131 return alpha32 | _mm_cvtsi128_si32(ret);
132 }
133 IGNORE_UNINITIALIZED_WARNING_STOP
134
138 static inline Colour AdjustBrightneSSE(Colour colour, uint8 brightness)
139 {
140 /* Shortcut for normal brightness. */
141 if (brightness == Blitter_32bppBase::DEFAULT_BRIGHTNESS) return colour;
142
143 return ReallyAdjustBrightness(colour, brightness);
144 }
145
146 static inline __m128i AdjustBrightnessOfTwoPixels(__m128i from, uint32 brightness)
147 {
148 #if (SSE_VERSION < 3)
149 NOT_REACHED();
150 #else
151 /* The following dataflow differs from the one of AdjustBrightness() only for alpha.
152 * In order to keep alpha in colAB, insert a 1 in a unused brightness byte (a*1->a).
153 * OK, not a 1 but DEFAULT_BRIGHTNESS to compensate the div.
154 */
155 brightness &= 0xFF00FF00;
156 brightness += Blitter_32bppBase::DEFAULT_BRIGHTNESS;
157
158 __m128i colAB = _mm_unpacklo_epi8(from, _mm_setzero_si128());
159 __m128i briAB = _mm_cvtsi32_si128(brightness);
160 briAB = _mm_shuffle_epi8(briAB, BRIGHTNESS_LOW_CONTROL_MASK); // DEFAULT_BRIGHTNESS in 0, 0x00 in 2.
161 colAB = _mm_mullo_epi16(colAB, briAB);
162 __m128i colAB_ob = _mm_srli_epi16(colAB, 8 + 7);
163 colAB = _mm_srli_epi16(colAB, 7);
164
165 /* Sum overbright.
166 * Maximum for each rgb is 508 => 9 bits. The highest bit tells if there is overbright.
167 * -255 is changed in -256 so we just have to take the 8 lower bits into account.
168 */
169 colAB = _mm_and_si128(colAB, BRIGHTNESS_DIV_CLEANER);
170 colAB_ob = _mm_and_si128(colAB_ob, OVERBRIGHT_PRESENCE_MASK);
171 colAB_ob = _mm_mullo_epi16(colAB_ob, OVERBRIGHT_VALUE_MASK);
172 colAB_ob = _mm_and_si128(colAB_ob, colAB);
173 __m128i obAB = _mm_hadd_epi16(_mm_hadd_epi16(colAB_ob, _mm_setzero_si128()), _mm_setzero_si128());
174
175 obAB = _mm_srli_epi16(obAB, 1); // Reduce overbright strength.
176 obAB = _mm_shuffle_epi8(obAB, OVERBRIGHT_CONTROL_MASK);
177 __m128i retAB = OVERBRIGHT_VALUE_MASK; // ob_mask is equal to white.
178 retAB = _mm_subs_epu16(retAB, colAB); // (255 - rgb)
179 retAB = _mm_mullo_epi16(retAB, obAB); // ob*(255 - rgb)
180 retAB = _mm_srli_epi16(retAB, 8); // ob*(255 - rgb)/256
181 retAB = _mm_add_epi16(retAB, colAB); // ob*(255 - rgb)/256 + rgb
182
183 return _mm_packus_epi16(retAB, retAB);
184 #endif
185 }
186
187 #if FULL_ANIMATION == 0
188
195 IGNORE_UNINITIALIZED_WARNING_START
196 template <BlitterMode mode, Blitter_32bppSSE2::ReadMode read_mode, Blitter_32bppSSE2::BlockType bt_last, bool translucent>
197 #if (SSE_VERSION == 2)
198 inline void Blitter_32bppSSE2::Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom)
199 #elif (SSE_VERSION == 3)
200 inline void Blitter_32bppSSSE3::Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom)
201 #elif (SSE_VERSION == 4)
202 inline void Blitter_32bppSSE4::Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom)
203 #endif
204 {
205 const byte * const remap = bp->remap;
206 Colour *dst_line = (Colour *) bp->dst + bp->top * bp->pitch + bp->left;
207 int effective_width = bp->width;
208
209 /* Find where to start reading in the source sprite. */
210 const SpriteData * const sd = (const SpriteData *) bp->sprite;
211 const SpriteInfo * const si = &sd->infos[zoom];
212 const MapValue *src_mv_line = (const MapValue *) &sd->data[si->mv_offset] + bp->skip_top * si->sprite_width;
213 const Colour *src_rgba_line = (const Colour *) ((const byte *) &sd->data[si->sprite_offset] + bp->skip_top * si->sprite_line_size);
214
215 if (read_mode != RM_WITH_MARGIN) {
216 src_rgba_line += bp->skip_left;
217 src_mv_line += bp->skip_left;
218 }
219 const MapValue *src_mv = src_mv_line;
220
221 /* Load these variables into register before loop. */
222 #if (SSE_VERSION == 2)
223 const __m128i clear_hi = CLEAR_HIGH_BYTE_MASK;
224 #define ALPHA_BLEND_PARAM_1 clear_hi
225 #define ALPHA_BLEND_PARAM_2 clear_hi
226 #define DARKEN_PARAM_1 tr_nom_base
227 #define DARKEN_PARAM_2 tr_nom_base
228 #else
229 const __m128i a_cm = ALPHA_CONTROL_MASK;
230 const __m128i pack_low_cm = PACK_LOW_CONTROL_MASK;
231 #define ALPHA_BLEND_PARAM_1 a_cm
232 #define ALPHA_BLEND_PARAM_2 pack_low_cm
233 #define DARKEN_PARAM_1 a_cm
234 #define DARKEN_PARAM_2 tr_nom_base
235 #endif
236 const __m128i tr_nom_base = TRANSPARENT_NOM_BASE;
237
238 for (int y = bp->height; y != 0; y--) {
239 Colour *dst = dst_line;
240 const Colour *src = src_rgba_line + META_LENGTH;
241 if (mode == BM_COLOUR_REMAP || mode == BM_CRASH_REMAP) src_mv = src_mv_line;
242
243 if (read_mode == RM_WITH_MARGIN) {
244 assert(bt_last == BT_NONE); // or you must ensure block type is preserved
245 src += src_rgba_line[0].data;
246 dst += src_rgba_line[0].data;
247 if (mode == BM_COLOUR_REMAP || mode == BM_CRASH_REMAP) src_mv += src_rgba_line[0].data;
248 const int width_diff = si->sprite_width - bp->width;
249 effective_width = bp->width - (int) src_rgba_line[0].data;
250 const int delta_diff = (int) src_rgba_line[1].data - width_diff;
251 const int new_width = effective_width - delta_diff;
252 effective_width = delta_diff > 0 ? new_width : effective_width;
253 if (effective_width <= 0) goto next_line;
254 }
255
256 switch (mode) {
257 default:
258 if (!translucent) {
259 for (uint x = (uint) effective_width; x > 0; x--) {
260 if (src->a) *dst = *src;
261 src++;
262 dst++;
263 }
264 break;
265 }
266
267 for (uint x = (uint) effective_width / 2; x > 0; x--) {
268 __m128i srcABCD = _mm_loadl_epi64((const __m128i*) src);
269 __m128i dstABCD = _mm_loadl_epi64((__m128i*) dst);
270 _mm_storel_epi64((__m128i*) dst, AlphaBlendTwoPixels(srcABCD, dstABCD, ALPHA_BLEND_PARAM_1, ALPHA_BLEND_PARAM_2));
271 src += 2;
272 dst += 2;
273 }
274
275 if ((bt_last == BT_NONE && effective_width & 1) || bt_last == BT_ODD) {
276 __m128i srcABCD = _mm_cvtsi32_si128(src->data);
277 __m128i dstABCD = _mm_cvtsi32_si128(dst->data);
278 dst->data = _mm_cvtsi128_si32(AlphaBlendTwoPixels(srcABCD, dstABCD, ALPHA_BLEND_PARAM_1, ALPHA_BLEND_PARAM_2));
279 }
280 break;
281
282 case BM_COLOUR_REMAP:
283 #if (SSE_VERSION >= 3)
284 for (uint x = (uint) effective_width / 2; x > 0; x--) {
285 __m128i srcABCD = _mm_loadl_epi64((const __m128i*) src);
286 __m128i dstABCD = _mm_loadl_epi64((__m128i*) dst);
287 uint32 mvX2 = *((uint32 *) const_cast<MapValue *>(src_mv));
288
289 /* Remap colours. */
290 if (mvX2 & 0x00FF00FF) {
291 #define CMOV_REMAP(m_colour, m_colour_init, m_src, m_m) \
292 /* Written so the compiler uses CMOV. */ \
293 Colour m_colour = m_colour_init; \
294 { \
295 const Colour srcm = (Colour) (m_src); \
296 const uint m = (byte) (m_m); \
297 const uint r = remap[m]; \
298 const Colour cmap = (this->LookupColourInPalette(r).data & 0x00FFFFFF) | (srcm.data & 0xFF000000); \
299 m_colour = r == 0 ? m_colour : cmap; \
300 m_colour = m != 0 ? m_colour : srcm; \
301 }
302 #ifdef _SQ64
303 uint64 srcs = _mm_cvtsi128_si64(srcABCD);
304 uint64 remapped_src = 0;
305 CMOV_REMAP(c0, 0, srcs, mvX2);
306 remapped_src = c0.data;
307 CMOV_REMAP(c1, 0, srcs >> 32, mvX2 >> 16);
308 remapped_src |= (uint64) c1.data << 32;
309 srcABCD = _mm_cvtsi64_si128(remapped_src);
310 #else
311 Colour remapped_src[2];
312 CMOV_REMAP(c0, 0, _mm_cvtsi128_si32(srcABCD), mvX2);
313 remapped_src[0] = c0.data;
314 CMOV_REMAP(c1, 0, src[1], mvX2 >> 16);
315 remapped_src[1] = c1.data;
316 srcABCD = _mm_loadl_epi64((__m128i*) &remapped_src);
317 #endif
318
319 if ((mvX2 & 0xFF00FF00) != 0x80008000) srcABCD = AdjustBrightnessOfTwoPixels(srcABCD, mvX2);
320 }
321
322 /* Blend colours. */
323 _mm_storel_epi64((__m128i *) dst, AlphaBlendTwoPixels(srcABCD, dstABCD, ALPHA_BLEND_PARAM_1, ALPHA_BLEND_PARAM_2));
324 dst += 2;
325 src += 2;
326 src_mv += 2;
327 }
328
329 if ((bt_last == BT_NONE && effective_width & 1) || bt_last == BT_ODD) {
330 #else
331 for (uint x = (uint) effective_width; x > 0; x--) {
332 #endif
333 /* In case the m-channel is zero, do not remap this pixel in any way. */
334 __m128i srcABCD;
335 if (src_mv->m) {
336 const uint r = remap[src_mv->m];
337 if (r != 0) {
338 Colour remapped_colour = AdjustBrightneSSE(this->LookupColourInPalette(r), src_mv->v);
339 if (src->a == 255) {
340 *dst = remapped_colour;
341 } else {
342 remapped_colour.a = src->a;
343 srcABCD = _mm_cvtsi32_si128(remapped_colour.data);
344 goto bmcr_alpha_blend_single;
345 }
346 }
347 } else {
348 srcABCD = _mm_cvtsi32_si128(src->data);
349 if (src->a < 255) {
350 bmcr_alpha_blend_single:
351 __m128i dstABCD = _mm_cvtsi32_si128(dst->data);
352 srcABCD = AlphaBlendTwoPixels(srcABCD, dstABCD, ALPHA_BLEND_PARAM_1, ALPHA_BLEND_PARAM_2);
353 }
354 dst->data = _mm_cvtsi128_si32(srcABCD);
355 }
356 #if (SSE_VERSION == 2)
357 src_mv++;
358 dst++;
359 src++;
360 #endif
361 }
362 break;
363
364 case BM_TRANSPARENT:
365 /* Make the current colour a bit more black, so it looks like this image is transparent. */
366 for (uint x = (uint) bp->width / 2; x > 0; x--) {
367 __m128i srcABCD = _mm_loadl_epi64((const __m128i*) src);
368 __m128i dstABCD = _mm_loadl_epi64((__m128i*) dst);
369 _mm_storel_epi64((__m128i *) dst, DarkenTwoPixels(srcABCD, dstABCD, DARKEN_PARAM_1, DARKEN_PARAM_2));
370 src += 2;
371 dst += 2;
372 }
373
374 if ((bt_last == BT_NONE && bp->width & 1) || bt_last == BT_ODD) {
375 __m128i srcABCD = _mm_cvtsi32_si128(src->data);
376 __m128i dstABCD = _mm_cvtsi32_si128(dst->data);
377 dst->data = _mm_cvtsi128_si32(DarkenTwoPixels(srcABCD, dstABCD, DARKEN_PARAM_1, DARKEN_PARAM_2));
378 }
379 break;
380
381 case BM_CRASH_REMAP:
382 for (uint x = (uint) bp->width; x > 0; x--) {
383 if (src_mv->m == 0) {
384 if (src->a != 0) {
385 uint8 g = MakeDark(src->r, src->g, src->b);
386 *dst = ComposeColourRGBA(g, g, g, src->a, *dst);
387 }
388 } else {
389 uint r = remap[src_mv->m];
390 if (r != 0) *dst = ComposeColourPANoCheck(this->AdjustBrightness(this->LookupColourInPalette(r), src_mv->v), src->a, *dst);
391 }
392 src_mv++;
393 dst++;
394 src++;
395 }
396 break;
397
398 case BM_BLACK_REMAP:
399 for (uint x = (uint) bp->width; x > 0; x--) {
400 if (src->a != 0) {
401 *dst = Colour(0, 0, 0);
402 }
403 src_mv++;
404 dst++;
405 src++;
406 }
407 break;
408 }
409
410 next_line:
411 if (mode == BM_COLOUR_REMAP || mode == BM_CRASH_REMAP) src_mv_line += si->sprite_width;
412 src_rgba_line = (const Colour*) ((const byte*) src_rgba_line + si->sprite_line_size);
413 dst_line += bp->pitch;
414 }
415 }
416 IGNORE_UNINITIALIZED_WARNING_STOP
417
425 #if (SSE_VERSION == 2)
426 void Blitter_32bppSSE2::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom)
427 #elif (SSE_VERSION == 3)
428 void Blitter_32bppSSSE3::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom)
429 #elif (SSE_VERSION == 4)
430 void Blitter_32bppSSE4::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom)
431 #endif
432 {
433 switch (mode) {
434 default: {
435 if (bp->skip_left != 0 || bp->width <= MARGIN_NORMAL_THRESHOLD) {
436 bm_normal:
437 const BlockType bt_last = (BlockType) (bp->width & 1);
438 switch (bt_last) {
439 default: Draw<BM_NORMAL, RM_WITH_SKIP, BT_EVEN, true>(bp, zoom); return;
440 case BT_ODD: Draw<BM_NORMAL, RM_WITH_SKIP, BT_ODD, true>(bp, zoom); return;
441 }
442 } else {
443 if (((const Blitter_32bppSSE_Base::SpriteData *) bp->sprite)->flags & SF_TRANSLUCENT) {
444 Draw<BM_NORMAL, RM_WITH_MARGIN, BT_NONE, true>(bp, zoom);
445 } else {
446 Draw<BM_NORMAL, RM_WITH_MARGIN, BT_NONE, false>(bp, zoom);
447 }
448 return;
449 }
450 break;
451 }
452 case BM_COLOUR_REMAP:
453 if (((const Blitter_32bppSSE_Base::SpriteData *) bp->sprite)->flags & SF_NO_REMAP) goto bm_normal;
454 if (bp->skip_left != 0 || bp->width <= MARGIN_REMAP_THRESHOLD) {
455 Draw<BM_COLOUR_REMAP, RM_WITH_SKIP, BT_NONE, true>(bp, zoom); return;
456 } else {
457 Draw<BM_COLOUR_REMAP, RM_WITH_MARGIN, BT_NONE, true>(bp, zoom); return;
458 }
459 case BM_TRANSPARENT: Draw<BM_TRANSPARENT, RM_NONE, BT_NONE, true>(bp, zoom); return;
460 case BM_CRASH_REMAP: Draw<BM_CRASH_REMAP, RM_NONE, BT_NONE, true>(bp, zoom); return;
461 case BM_BLACK_REMAP: Draw<BM_BLACK_REMAP, RM_NONE, BT_NONE, true>(bp, zoom); return;
462 }
463 }
464 #endif /* FULL_ANIMATION */
465
466 #endif /* WITH_SSE */
467 #endif /* BLITTER_32BPP_SSE_FUNC_HPP */