1 // Copyright 2016 The SwiftShader Authors. All Rights Reserved.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include "Constants.hpp"
16
17 #include "System/Half.hpp"
18 #include "System/Math.hpp"
19
20 #include <cstring>
21
22 namespace sw {
23
24 Constants constants;
25
Constants()26 Constants::Constants()
27 {
28 static const unsigned int transposeBit0[16] = {
29 0x00000000,
30 0x00000001,
31 0x00000010,
32 0x00000011,
33 0x00000100,
34 0x00000101,
35 0x00000110,
36 0x00000111,
37 0x00001000,
38 0x00001001,
39 0x00001010,
40 0x00001011,
41 0x00001100,
42 0x00001101,
43 0x00001110,
44 0x00001111
45 };
46
47 static const unsigned int transposeBit1[16] = {
48 0x00000000,
49 0x00000002,
50 0x00000020,
51 0x00000022,
52 0x00000200,
53 0x00000202,
54 0x00000220,
55 0x00000222,
56 0x00002000,
57 0x00002002,
58 0x00002020,
59 0x00002022,
60 0x00002200,
61 0x00002202,
62 0x00002220,
63 0x00002222
64 };
65
66 static const unsigned int transposeBit2[16] = {
67 0x00000000,
68 0x00000004,
69 0x00000040,
70 0x00000044,
71 0x00000400,
72 0x00000404,
73 0x00000440,
74 0x00000444,
75 0x00004000,
76 0x00004004,
77 0x00004040,
78 0x00004044,
79 0x00004400,
80 0x00004404,
81 0x00004440,
82 0x00004444
83 };
84
85 memcpy(&this->transposeBit0, transposeBit0, sizeof(transposeBit0));
86 memcpy(&this->transposeBit1, transposeBit1, sizeof(transposeBit1));
87 memcpy(&this->transposeBit2, transposeBit2, sizeof(transposeBit2));
88
89 static const ushort4 cWeight[17] = {
90 { 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF }, // 0xFFFF / 1 = 0xFFFF
91 { 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF }, // 0xFFFF / 1 = 0xFFFF
92 { 0x8000, 0x8000, 0x8000, 0x8000 }, // 0xFFFF / 2 = 0x8000
93 { 0x5555, 0x5555, 0x5555, 0x5555 }, // 0xFFFF / 3 = 0x5555
94 { 0x4000, 0x4000, 0x4000, 0x4000 }, // 0xFFFF / 4 = 0x4000
95 { 0x3333, 0x3333, 0x3333, 0x3333 }, // 0xFFFF / 5 = 0x3333
96 { 0x2AAA, 0x2AAA, 0x2AAA, 0x2AAA }, // 0xFFFF / 6 = 0x2AAA
97 { 0x2492, 0x2492, 0x2492, 0x2492 }, // 0xFFFF / 7 = 0x2492
98 { 0x2000, 0x2000, 0x2000, 0x2000 }, // 0xFFFF / 8 = 0x2000
99 { 0x1C71, 0x1C71, 0x1C71, 0x1C71 }, // 0xFFFF / 9 = 0x1C71
100 { 0x1999, 0x1999, 0x1999, 0x1999 }, // 0xFFFF / 10 = 0x1999
101 { 0x1745, 0x1745, 0x1745, 0x1745 }, // 0xFFFF / 11 = 0x1745
102 { 0x1555, 0x1555, 0x1555, 0x1555 }, // 0xFFFF / 12 = 0x1555
103 { 0x13B1, 0x13B1, 0x13B1, 0x13B1 }, // 0xFFFF / 13 = 0x13B1
104 { 0x1249, 0x1249, 0x1249, 0x1249 }, // 0xFFFF / 14 = 0x1249
105 { 0x1111, 0x1111, 0x1111, 0x1111 }, // 0xFFFF / 15 = 0x1111
106 { 0x1000, 0x1000, 0x1000, 0x1000 }, // 0xFFFF / 16 = 0x1000
107 };
108
109 static const float4 uvWeight[17] = {
110 { 1.0f / 1.0f, 1.0f / 1.0f, 1.0f / 1.0f, 1.0f / 1.0f },
111 { 1.0f / 1.0f, 1.0f / 1.0f, 1.0f / 1.0f, 1.0f / 1.0f },
112 { 1.0f / 2.0f, 1.0f / 2.0f, 1.0f / 2.0f, 1.0f / 2.0f },
113 { 1.0f / 3.0f, 1.0f / 3.0f, 1.0f / 3.0f, 1.0f / 3.0f },
114 { 1.0f / 4.0f, 1.0f / 4.0f, 1.0f / 4.0f, 1.0f / 4.0f },
115 { 1.0f / 5.0f, 1.0f / 5.0f, 1.0f / 5.0f, 1.0f / 5.0f },
116 { 1.0f / 6.0f, 1.0f / 6.0f, 1.0f / 6.0f, 1.0f / 6.0f },
117 { 1.0f / 7.0f, 1.0f / 7.0f, 1.0f / 7.0f, 1.0f / 7.0f },
118 { 1.0f / 8.0f, 1.0f / 8.0f, 1.0f / 8.0f, 1.0f / 8.0f },
119 { 1.0f / 9.0f, 1.0f / 9.0f, 1.0f / 9.0f, 1.0f / 9.0f },
120 { 1.0f / 10.0f, 1.0f / 10.0f, 1.0f / 10.0f, 1.0f / 10.0f },
121 { 1.0f / 11.0f, 1.0f / 11.0f, 1.0f / 11.0f, 1.0f / 11.0f },
122 { 1.0f / 12.0f, 1.0f / 12.0f, 1.0f / 12.0f, 1.0f / 12.0f },
123 { 1.0f / 13.0f, 1.0f / 13.0f, 1.0f / 13.0f, 1.0f / 13.0f },
124 { 1.0f / 14.0f, 1.0f / 14.0f, 1.0f / 14.0f, 1.0f / 14.0f },
125 { 1.0f / 15.0f, 1.0f / 15.0f, 1.0f / 15.0f, 1.0f / 15.0f },
126 { 1.0f / 16.0f, 1.0f / 16.0f, 1.0f / 16.0f, 1.0f / 16.0f },
127 };
128
129 static const float4 uvStart[17] = {
130 { -0.0f / 2.0f, -0.0f / 2.0f, -0.0f / 2.0f, -0.0f / 2.0f },
131 { -0.0f / 2.0f, -0.0f / 2.0f, -0.0f / 2.0f, -0.0f / 2.0f },
132 { -1.0f / 4.0f, -1.0f / 4.0f, -1.0f / 4.0f, -1.0f / 4.0f },
133 { -2.0f / 6.0f, -2.0f / 6.0f, -2.0f / 6.0f, -2.0f / 6.0f },
134 { -3.0f / 8.0f, -3.0f / 8.0f, -3.0f / 8.0f, -3.0f / 8.0f },
135 { -4.0f / 10.0f, -4.0f / 10.0f, -4.0f / 10.0f, -4.0f / 10.0f },
136 { -5.0f / 12.0f, -5.0f / 12.0f, -5.0f / 12.0f, -5.0f / 12.0f },
137 { -6.0f / 14.0f, -6.0f / 14.0f, -6.0f / 14.0f, -6.0f / 14.0f },
138 { -7.0f / 16.0f, -7.0f / 16.0f, -7.0f / 16.0f, -7.0f / 16.0f },
139 { -8.0f / 18.0f, -8.0f / 18.0f, -8.0f / 18.0f, -8.0f / 18.0f },
140 { -9.0f / 20.0f, -9.0f / 20.0f, -9.0f / 20.0f, -9.0f / 20.0f },
141 { -10.0f / 22.0f, -10.0f / 22.0f, -10.0f / 22.0f, -10.0f / 22.0f },
142 { -11.0f / 24.0f, -11.0f / 24.0f, -11.0f / 24.0f, -11.0f / 24.0f },
143 { -12.0f / 26.0f, -12.0f / 26.0f, -12.0f / 26.0f, -12.0f / 26.0f },
144 { -13.0f / 28.0f, -13.0f / 28.0f, -13.0f / 28.0f, -13.0f / 28.0f },
145 { -14.0f / 30.0f, -14.0f / 30.0f, -14.0f / 30.0f, -14.0f / 30.0f },
146 { -15.0f / 32.0f, -15.0f / 32.0f, -15.0f / 32.0f, -15.0f / 32.0f },
147 };
148
149 memcpy(&this->cWeight, cWeight, sizeof(cWeight));
150 memcpy(&this->uvWeight, uvWeight, sizeof(uvWeight));
151 memcpy(&this->uvStart, uvStart, sizeof(uvStart));
152
153 static const unsigned int occlusionCount[16] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4 };
154
155 memcpy(&this->occlusionCount, &occlusionCount, sizeof(occlusionCount));
156
157 for(int i = 0; i < 16; i++)
158 {
159 maskB4Q[i][0] = -(i >> 0 & 1);
160 maskB4Q[i][1] = -(i >> 1 & 1);
161 maskB4Q[i][2] = -(i >> 2 & 1);
162 maskB4Q[i][3] = -(i >> 3 & 1);
163 maskB4Q[i][4] = -(i >> 0 & 1);
164 maskB4Q[i][5] = -(i >> 1 & 1);
165 maskB4Q[i][6] = -(i >> 2 & 1);
166 maskB4Q[i][7] = -(i >> 3 & 1);
167
168 invMaskB4Q[i][0] = ~maskB4Q[i][0];
169 invMaskB4Q[i][1] = ~maskB4Q[i][1];
170 invMaskB4Q[i][2] = ~maskB4Q[i][2];
171 invMaskB4Q[i][3] = ~maskB4Q[i][3];
172 invMaskB4Q[i][4] = ~maskB4Q[i][4];
173 invMaskB4Q[i][5] = ~maskB4Q[i][5];
174 invMaskB4Q[i][6] = ~maskB4Q[i][6];
175 invMaskB4Q[i][7] = ~maskB4Q[i][7];
176
177 maskW4Q[i][0] = -(i >> 0 & 1);
178 maskW4Q[i][1] = -(i >> 1 & 1);
179 maskW4Q[i][2] = -(i >> 2 & 1);
180 maskW4Q[i][3] = -(i >> 3 & 1);
181
182 invMaskW4Q[i][0] = ~maskW4Q[i][0];
183 invMaskW4Q[i][1] = ~maskW4Q[i][1];
184 invMaskW4Q[i][2] = ~maskW4Q[i][2];
185 invMaskW4Q[i][3] = ~maskW4Q[i][3];
186
187 maskD4X[i][0] = -(i >> 0 & 1);
188 maskD4X[i][1] = -(i >> 1 & 1);
189 maskD4X[i][2] = -(i >> 2 & 1);
190 maskD4X[i][3] = -(i >> 3 & 1);
191
192 invMaskD4X[i][0] = ~maskD4X[i][0];
193 invMaskD4X[i][1] = ~maskD4X[i][1];
194 invMaskD4X[i][2] = ~maskD4X[i][2];
195 invMaskD4X[i][3] = ~maskD4X[i][3];
196
197 maskQ0Q[i] = -(i >> 0 & 1);
198 maskQ1Q[i] = -(i >> 1 & 1);
199 maskQ2Q[i] = -(i >> 2 & 1);
200 maskQ3Q[i] = -(i >> 3 & 1);
201
202 invMaskQ0Q[i] = ~maskQ0Q[i];
203 invMaskQ1Q[i] = ~maskQ1Q[i];
204 invMaskQ2Q[i] = ~maskQ2Q[i];
205 invMaskQ3Q[i] = ~maskQ3Q[i];
206
207 maskX0X[i][0] = maskX0X[i][1] = maskX0X[i][2] = maskX0X[i][3] = -(i >> 0 & 1);
208 maskX1X[i][0] = maskX1X[i][1] = maskX1X[i][2] = maskX1X[i][3] = -(i >> 1 & 1);
209 maskX2X[i][0] = maskX2X[i][1] = maskX2X[i][2] = maskX2X[i][3] = -(i >> 2 & 1);
210 maskX3X[i][0] = maskX3X[i][1] = maskX3X[i][2] = maskX3X[i][3] = -(i >> 3 & 1);
211
212 invMaskX0X[i][0] = invMaskX0X[i][1] = invMaskX0X[i][2] = invMaskX0X[i][3] = ~maskX0X[i][0];
213 invMaskX1X[i][0] = invMaskX1X[i][1] = invMaskX1X[i][2] = invMaskX1X[i][3] = ~maskX1X[i][0];
214 invMaskX2X[i][0] = invMaskX2X[i][1] = invMaskX2X[i][2] = invMaskX2X[i][3] = ~maskX2X[i][0];
215 invMaskX3X[i][0] = invMaskX3X[i][1] = invMaskX3X[i][2] = invMaskX3X[i][3] = ~maskX3X[i][0];
216
217 maskD01Q[i][0] = -(i >> 0 & 1);
218 maskD01Q[i][1] = -(i >> 1 & 1);
219 maskD23Q[i][0] = -(i >> 2 & 1);
220 maskD23Q[i][1] = -(i >> 3 & 1);
221
222 invMaskD01Q[i][0] = ~maskD01Q[i][0];
223 invMaskD01Q[i][1] = ~maskD01Q[i][1];
224 invMaskD23Q[i][0] = ~maskD23Q[i][0];
225 invMaskD23Q[i][1] = ~maskD23Q[i][1];
226
227 maskQ01X[i][0] = -(i >> 0 & 1);
228 maskQ01X[i][1] = -(i >> 1 & 1);
229 maskQ23X[i][0] = -(i >> 2 & 1);
230 maskQ23X[i][1] = -(i >> 3 & 1);
231
232 invMaskQ01X[i][0] = ~maskQ01X[i][0];
233 invMaskQ01X[i][1] = ~maskQ01X[i][1];
234 invMaskQ23X[i][0] = ~maskQ23X[i][0];
235 invMaskQ23X[i][1] = ~maskQ23X[i][1];
236 }
237
238 for(int i = 0; i < 8; i++)
239 {
240 mask565Q[i] = word4((i & 0x1 ? 0x001F : 0) | (i & 0x2 ? 0x07E0 : 0) | (i & 0x4 ? 0xF800 : 0));
241 mask11X[i] = dword4((i & 0x1 ? 0x000007FFu : 0) | (i & 0x2 ? 0x003FF800u : 0) | (i & 0x4 ? 0xFFC00000u : 0));
242 }
243
244 for(int i = 0; i < 16; i++)
245 {
246 mask5551Q[i] = word4((i & 0x1 ? 0x001F : 0) | (i & 0x2 ? 0x03E0 : 0) | (i & 0x4 ? 0x7C00 : 0) | (i & 8 ? 0x8000 : 0));
247 }
248
249 for(int i = 0; i < 4; i++)
250 {
251 maskW01Q[i][0] = -(i >> 0 & 1);
252 maskW01Q[i][1] = -(i >> 1 & 1);
253 maskW01Q[i][2] = -(i >> 0 & 1);
254 maskW01Q[i][3] = -(i >> 1 & 1);
255
256 maskD01X[i][0] = -(i >> 0 & 1);
257 maskD01X[i][1] = -(i >> 1 & 1);
258 maskD01X[i][2] = -(i >> 0 & 1);
259 maskD01X[i][3] = -(i >> 1 & 1);
260 }
261
262 for(int i = 0; i < 16; i++)
263 {
264 mask10Q[i][0] = mask10Q[i][1] =
265 (i & 0x1 ? 0x3FF : 0) |
266 (i & 0x2 ? 0xFFC00 : 0) |
267 (i & 0x4 ? 0x3FF00000 : 0) |
268 (i & 0x8 ? 0xC0000000 : 0);
269 }
270
271 for(int i = 0; i < 256; i++)
272 {
273 sRGBtoLinearFF_FF00[i] = (unsigned short)(sRGBtoLinear((float)i / 0xFF) * 0xFF00 + 0.5f);
274 }
275
276 for(int i = 0; i < 0x1000; i++)
277 {
278 linearToSRGB12_16[i] = (unsigned short)(clamp(linearToSRGB((float)i / 0x0FFF) * 0xFFFF + 0.5f, 0.0f, (float)0xFFFF));
279 sRGBtoLinear12_16[i] = (unsigned short)(clamp(sRGBtoLinear((float)i / 0x0FFF) * 0xFFFF + 0.5f, 0.0f, (float)0xFFFF));
280 }
281
282 const float4 X[4] = {
283 float4(SampleLocationsX[0]),
284 float4(SampleLocationsX[1]),
285 float4(SampleLocationsX[2]),
286 float4(SampleLocationsX[3]),
287 };
288
289 const float4 Y[4] = {
290 float4(SampleLocationsY[0]),
291 float4(SampleLocationsY[1]),
292 float4(SampleLocationsY[2]),
293 float4(SampleLocationsY[3]),
294 };
295
296 for(int q = 0; q < 4; q++)
297 {
298 for(int c = 0; c < 16; c++)
299 {
300 for(int i = 0; i < 4; i++)
301 {
302 sampleX[q][c][i] = c & (1 << i) ? X[q][0] : 0.0f;
303 sampleY[q][c][i] = c & (1 << i) ? Y[q][0] : 0.0f;
304 weight[c][i] = c & (1 << i) ? 1.0f : 0.0f;
305 }
306 }
307 }
308
309 constexpr auto subPixB = vk::SUBPIXEL_PRECISION_BITS;
310
311 const int Xf[4] = { toFixedPoint(X[0][0], subPixB), toFixedPoint(X[1][0], subPixB), toFixedPoint(X[2][0], subPixB), toFixedPoint(X[3][0], subPixB) };
312 const int Yf[4] = { toFixedPoint(Y[0][0], subPixB), toFixedPoint(Y[1][0], subPixB), toFixedPoint(Y[2][0], subPixB), toFixedPoint(Y[3][0], subPixB) };
313
314 memcpy(&this->Xf, &Xf, sizeof(Xf));
315 memcpy(&this->Yf, &Yf, sizeof(Yf));
316
317 memcpy(&this->X, &X, sizeof(X));
318 memcpy(&this->Y, &Y, sizeof(Y));
319
320 const dword maxX[16] = { 0x00000000, 0x00000001, 0x00000100, 0x00000101, 0x00010000, 0x00010001, 0x00010100, 0x00010101, 0x01000000, 0x01000001, 0x01000100, 0x01000101, 0x01010000, 0x01010001, 0x01010100, 0x01010101 };
321 const dword maxY[16] = { 0x00000000, 0x00000002, 0x00000200, 0x00000202, 0x00020000, 0x00020002, 0x00020200, 0x00020202, 0x02000000, 0x02000002, 0x02000200, 0x02000202, 0x02020000, 0x02020002, 0x02020200, 0x02020202 };
322 const dword maxZ[16] = { 0x00000000, 0x00000004, 0x00000400, 0x00000404, 0x00040000, 0x00040004, 0x00040400, 0x00040404, 0x04000000, 0x04000004, 0x04000400, 0x04000404, 0x04040000, 0x04040004, 0x04040400, 0x04040404 };
323 const dword minX[16] = { 0x00000000, 0x00000008, 0x00000800, 0x00000808, 0x00080000, 0x00080008, 0x00080800, 0x00080808, 0x08000000, 0x08000008, 0x08000800, 0x08000808, 0x08080000, 0x08080008, 0x08080800, 0x08080808 };
324 const dword minY[16] = { 0x00000000, 0x00000010, 0x00001000, 0x00001010, 0x00100000, 0x00100010, 0x00101000, 0x00101010, 0x10000000, 0x10000010, 0x10001000, 0x10001010, 0x10100000, 0x10100010, 0x10101000, 0x10101010 };
325 const dword minZ[16] = { 0x00000000, 0x00000020, 0x00002000, 0x00002020, 0x00200000, 0x00200020, 0x00202000, 0x00202020, 0x20000000, 0x20000020, 0x20002000, 0x20002020, 0x20200000, 0x20200020, 0x20202000, 0x20202020 };
326 const dword fini[16] = { 0x00000000, 0x00000080, 0x00008000, 0x00008080, 0x00800000, 0x00800080, 0x00808000, 0x00808080, 0x80000000, 0x80000080, 0x80008000, 0x80008080, 0x80800000, 0x80800080, 0x80808000, 0x80808080 };
327
328 memcpy(&this->maxX, &maxX, sizeof(maxX));
329 memcpy(&this->maxY, &maxY, sizeof(maxY));
330 memcpy(&this->maxZ, &maxZ, sizeof(maxZ));
331 memcpy(&this->minX, &minX, sizeof(minX));
332 memcpy(&this->minY, &minY, sizeof(minY));
333 memcpy(&this->minZ, &minZ, sizeof(minZ));
334 memcpy(&this->fini, &fini, sizeof(fini));
335
336 static const dword4 maxPos = { 0x7F7FFFFF, 0x7F7FFFFF, 0x7F7FFFFF, 0x7F7FFFFE };
337
338 memcpy(&this->maxPos, &maxPos, sizeof(maxPos));
339
340 static const float4 unscaleByte = { 1.0f / 0xFF, 1.0f / 0xFF, 1.0f / 0xFF, 1.0f / 0xFF };
341 static const float4 unscaleSByte = { 1.0f / 0x7F, 1.0f / 0x7F, 1.0f / 0x7F, 1.0f / 0x7F };
342 static const float4 unscaleShort = { 1.0f / 0x7FFF, 1.0f / 0x7FFF, 1.0f / 0x7FFF, 1.0f / 0x7FFF };
343 static const float4 unscaleUShort = { 1.0f / 0xFFFF, 1.0f / 0xFFFF, 1.0f / 0xFFFF, 1.0f / 0xFFFF };
344 static const float4 unscaleInt = { 1.0f / 0x7FFFFFFF, 1.0f / 0x7FFFFFFF, 1.0f / 0x7FFFFFFF, 1.0f / 0x7FFFFFFF };
345 static const float4 unscaleUInt = { 1.0f / 0xFFFFFFFF, 1.0f / 0xFFFFFFFF, 1.0f / 0xFFFFFFFF, 1.0f / 0xFFFFFFFF };
346 static const float4 unscaleFixed = { 1.0f / 0x00010000, 1.0f / 0x00010000, 1.0f / 0x00010000, 1.0f / 0x00010000 };
347
348 memcpy(&this->unscaleByte, &unscaleByte, sizeof(unscaleByte));
349 memcpy(&this->unscaleSByte, &unscaleSByte, sizeof(unscaleSByte));
350 memcpy(&this->unscaleShort, &unscaleShort, sizeof(unscaleShort));
351 memcpy(&this->unscaleUShort, &unscaleUShort, sizeof(unscaleUShort));
352 memcpy(&this->unscaleInt, &unscaleInt, sizeof(unscaleInt));
353 memcpy(&this->unscaleUInt, &unscaleUInt, sizeof(unscaleUInt));
354 memcpy(&this->unscaleFixed, &unscaleFixed, sizeof(unscaleFixed));
355
356 for(int i = 0; i <= 0xFFFF; i++)
357 {
358 half2float[i] = (float)reinterpret_cast<half &>(i);
359 }
360 }
361
362 } // namespace sw