xref: /aosp_15_r20/external/swiftshader/src/Pipeline/Constants.cpp (revision 03ce13f70fcc45d86ee91b7ee4cab1936a95046e)
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 
Constants()24 Constants::Constants()
25 {
26 	static const unsigned int transposeBit0[16] = {
27 		0x00000000,
28 		0x00000001,
29 		0x00000010,
30 		0x00000011,
31 		0x00000100,
32 		0x00000101,
33 		0x00000110,
34 		0x00000111,
35 		0x00001000,
36 		0x00001001,
37 		0x00001010,
38 		0x00001011,
39 		0x00001100,
40 		0x00001101,
41 		0x00001110,
42 		0x00001111
43 	};
44 
45 	static const unsigned int transposeBit1[16] = {
46 		0x00000000,
47 		0x00000002,
48 		0x00000020,
49 		0x00000022,
50 		0x00000200,
51 		0x00000202,
52 		0x00000220,
53 		0x00000222,
54 		0x00002000,
55 		0x00002002,
56 		0x00002020,
57 		0x00002022,
58 		0x00002200,
59 		0x00002202,
60 		0x00002220,
61 		0x00002222
62 	};
63 
64 	static const unsigned int transposeBit2[16] = {
65 		0x00000000,
66 		0x00000004,
67 		0x00000040,
68 		0x00000044,
69 		0x00000400,
70 		0x00000404,
71 		0x00000440,
72 		0x00000444,
73 		0x00004000,
74 		0x00004004,
75 		0x00004040,
76 		0x00004044,
77 		0x00004400,
78 		0x00004404,
79 		0x00004440,
80 		0x00004444
81 	};
82 
83 	memcpy(&this->transposeBit0, transposeBit0, sizeof(transposeBit0));
84 	memcpy(&this->transposeBit1, transposeBit1, sizeof(transposeBit1));
85 	memcpy(&this->transposeBit2, transposeBit2, sizeof(transposeBit2));
86 
87 	static const ushort4 cWeight[17] = {
88 		{ 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF },  // 0xFFFF / 1  = 0xFFFF
89 		{ 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF },  // 0xFFFF / 1  = 0xFFFF
90 		{ 0x8000, 0x8000, 0x8000, 0x8000 },  // 0xFFFF / 2  = 0x8000
91 		{ 0x5555, 0x5555, 0x5555, 0x5555 },  // 0xFFFF / 3  = 0x5555
92 		{ 0x4000, 0x4000, 0x4000, 0x4000 },  // 0xFFFF / 4  = 0x4000
93 		{ 0x3333, 0x3333, 0x3333, 0x3333 },  // 0xFFFF / 5  = 0x3333
94 		{ 0x2AAA, 0x2AAA, 0x2AAA, 0x2AAA },  // 0xFFFF / 6  = 0x2AAA
95 		{ 0x2492, 0x2492, 0x2492, 0x2492 },  // 0xFFFF / 7  = 0x2492
96 		{ 0x2000, 0x2000, 0x2000, 0x2000 },  // 0xFFFF / 8  = 0x2000
97 		{ 0x1C71, 0x1C71, 0x1C71, 0x1C71 },  // 0xFFFF / 9  = 0x1C71
98 		{ 0x1999, 0x1999, 0x1999, 0x1999 },  // 0xFFFF / 10 = 0x1999
99 		{ 0x1745, 0x1745, 0x1745, 0x1745 },  // 0xFFFF / 11 = 0x1745
100 		{ 0x1555, 0x1555, 0x1555, 0x1555 },  // 0xFFFF / 12 = 0x1555
101 		{ 0x13B1, 0x13B1, 0x13B1, 0x13B1 },  // 0xFFFF / 13 = 0x13B1
102 		{ 0x1249, 0x1249, 0x1249, 0x1249 },  // 0xFFFF / 14 = 0x1249
103 		{ 0x1111, 0x1111, 0x1111, 0x1111 },  // 0xFFFF / 15 = 0x1111
104 		{ 0x1000, 0x1000, 0x1000, 0x1000 },  // 0xFFFF / 16 = 0x1000
105 	};
106 
107 	static const float4 uvWeight[17] = {
108 		{ 1.0f / 1.0f, 1.0f / 1.0f, 1.0f / 1.0f, 1.0f / 1.0f },
109 		{ 1.0f / 1.0f, 1.0f / 1.0f, 1.0f / 1.0f, 1.0f / 1.0f },
110 		{ 1.0f / 2.0f, 1.0f / 2.0f, 1.0f / 2.0f, 1.0f / 2.0f },
111 		{ 1.0f / 3.0f, 1.0f / 3.0f, 1.0f / 3.0f, 1.0f / 3.0f },
112 		{ 1.0f / 4.0f, 1.0f / 4.0f, 1.0f / 4.0f, 1.0f / 4.0f },
113 		{ 1.0f / 5.0f, 1.0f / 5.0f, 1.0f / 5.0f, 1.0f / 5.0f },
114 		{ 1.0f / 6.0f, 1.0f / 6.0f, 1.0f / 6.0f, 1.0f / 6.0f },
115 		{ 1.0f / 7.0f, 1.0f / 7.0f, 1.0f / 7.0f, 1.0f / 7.0f },
116 		{ 1.0f / 8.0f, 1.0f / 8.0f, 1.0f / 8.0f, 1.0f / 8.0f },
117 		{ 1.0f / 9.0f, 1.0f / 9.0f, 1.0f / 9.0f, 1.0f / 9.0f },
118 		{ 1.0f / 10.0f, 1.0f / 10.0f, 1.0f / 10.0f, 1.0f / 10.0f },
119 		{ 1.0f / 11.0f, 1.0f / 11.0f, 1.0f / 11.0f, 1.0f / 11.0f },
120 		{ 1.0f / 12.0f, 1.0f / 12.0f, 1.0f / 12.0f, 1.0f / 12.0f },
121 		{ 1.0f / 13.0f, 1.0f / 13.0f, 1.0f / 13.0f, 1.0f / 13.0f },
122 		{ 1.0f / 14.0f, 1.0f / 14.0f, 1.0f / 14.0f, 1.0f / 14.0f },
123 		{ 1.0f / 15.0f, 1.0f / 15.0f, 1.0f / 15.0f, 1.0f / 15.0f },
124 		{ 1.0f / 16.0f, 1.0f / 16.0f, 1.0f / 16.0f, 1.0f / 16.0f },
125 	};
126 
127 	static const float4 uvStart[17] = {
128 		{ -0.0f / 2.0f, -0.0f / 2.0f, -0.0f / 2.0f, -0.0f / 2.0f },
129 		{ -0.0f / 2.0f, -0.0f / 2.0f, -0.0f / 2.0f, -0.0f / 2.0f },
130 		{ -1.0f / 4.0f, -1.0f / 4.0f, -1.0f / 4.0f, -1.0f / 4.0f },
131 		{ -2.0f / 6.0f, -2.0f / 6.0f, -2.0f / 6.0f, -2.0f / 6.0f },
132 		{ -3.0f / 8.0f, -3.0f / 8.0f, -3.0f / 8.0f, -3.0f / 8.0f },
133 		{ -4.0f / 10.0f, -4.0f / 10.0f, -4.0f / 10.0f, -4.0f / 10.0f },
134 		{ -5.0f / 12.0f, -5.0f / 12.0f, -5.0f / 12.0f, -5.0f / 12.0f },
135 		{ -6.0f / 14.0f, -6.0f / 14.0f, -6.0f / 14.0f, -6.0f / 14.0f },
136 		{ -7.0f / 16.0f, -7.0f / 16.0f, -7.0f / 16.0f, -7.0f / 16.0f },
137 		{ -8.0f / 18.0f, -8.0f / 18.0f, -8.0f / 18.0f, -8.0f / 18.0f },
138 		{ -9.0f / 20.0f, -9.0f / 20.0f, -9.0f / 20.0f, -9.0f / 20.0f },
139 		{ -10.0f / 22.0f, -10.0f / 22.0f, -10.0f / 22.0f, -10.0f / 22.0f },
140 		{ -11.0f / 24.0f, -11.0f / 24.0f, -11.0f / 24.0f, -11.0f / 24.0f },
141 		{ -12.0f / 26.0f, -12.0f / 26.0f, -12.0f / 26.0f, -12.0f / 26.0f },
142 		{ -13.0f / 28.0f, -13.0f / 28.0f, -13.0f / 28.0f, -13.0f / 28.0f },
143 		{ -14.0f / 30.0f, -14.0f / 30.0f, -14.0f / 30.0f, -14.0f / 30.0f },
144 		{ -15.0f / 32.0f, -15.0f / 32.0f, -15.0f / 32.0f, -15.0f / 32.0f },
145 	};
146 
147 	memcpy(&this->cWeight, cWeight, sizeof(cWeight));
148 	memcpy(&this->uvWeight, uvWeight, sizeof(uvWeight));
149 	memcpy(&this->uvStart, uvStart, sizeof(uvStart));
150 
151 	static const unsigned int occlusionCount[16] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4 };
152 
153 	memcpy(&this->occlusionCount, &occlusionCount, sizeof(occlusionCount));
154 
155 	for(int i = 0; i < 16; i++)
156 	{
157 		maskB4Q[i][0] = -(i >> 0 & 1);
158 		maskB4Q[i][1] = -(i >> 1 & 1);
159 		maskB4Q[i][2] = -(i >> 2 & 1);
160 		maskB4Q[i][3] = -(i >> 3 & 1);
161 		maskB4Q[i][4] = -(i >> 0 & 1);
162 		maskB4Q[i][5] = -(i >> 1 & 1);
163 		maskB4Q[i][6] = -(i >> 2 & 1);
164 		maskB4Q[i][7] = -(i >> 3 & 1);
165 
166 		invMaskB4Q[i][0] = ~maskB4Q[i][0];
167 		invMaskB4Q[i][1] = ~maskB4Q[i][1];
168 		invMaskB4Q[i][2] = ~maskB4Q[i][2];
169 		invMaskB4Q[i][3] = ~maskB4Q[i][3];
170 		invMaskB4Q[i][4] = ~maskB4Q[i][4];
171 		invMaskB4Q[i][5] = ~maskB4Q[i][5];
172 		invMaskB4Q[i][6] = ~maskB4Q[i][6];
173 		invMaskB4Q[i][7] = ~maskB4Q[i][7];
174 
175 		maskW4Q[i][0] = -(i >> 0 & 1);
176 		maskW4Q[i][1] = -(i >> 1 & 1);
177 		maskW4Q[i][2] = -(i >> 2 & 1);
178 		maskW4Q[i][3] = -(i >> 3 & 1);
179 
180 		invMaskW4Q[i][0] = ~maskW4Q[i][0];
181 		invMaskW4Q[i][1] = ~maskW4Q[i][1];
182 		invMaskW4Q[i][2] = ~maskW4Q[i][2];
183 		invMaskW4Q[i][3] = ~maskW4Q[i][3];
184 
185 		maskD4X[i][0] = -(i >> 0 & 1);
186 		maskD4X[i][1] = -(i >> 1 & 1);
187 		maskD4X[i][2] = -(i >> 2 & 1);
188 		maskD4X[i][3] = -(i >> 3 & 1);
189 
190 		invMaskD4X[i][0] = ~maskD4X[i][0];
191 		invMaskD4X[i][1] = ~maskD4X[i][1];
192 		invMaskD4X[i][2] = ~maskD4X[i][2];
193 		invMaskD4X[i][3] = ~maskD4X[i][3];
194 
195 		maskQ0Q[i] = -(i >> 0 & 1);
196 		maskQ1Q[i] = -(i >> 1 & 1);
197 		maskQ2Q[i] = -(i >> 2 & 1);
198 		maskQ3Q[i] = -(i >> 3 & 1);
199 
200 		invMaskQ0Q[i] = ~maskQ0Q[i];
201 		invMaskQ1Q[i] = ~maskQ1Q[i];
202 		invMaskQ2Q[i] = ~maskQ2Q[i];
203 		invMaskQ3Q[i] = ~maskQ3Q[i];
204 
205 		maskX0X[i][0] = maskX0X[i][1] = maskX0X[i][2] = maskX0X[i][3] = -(i >> 0 & 1);
206 		maskX1X[i][0] = maskX1X[i][1] = maskX1X[i][2] = maskX1X[i][3] = -(i >> 1 & 1);
207 		maskX2X[i][0] = maskX2X[i][1] = maskX2X[i][2] = maskX2X[i][3] = -(i >> 2 & 1);
208 		maskX3X[i][0] = maskX3X[i][1] = maskX3X[i][2] = maskX3X[i][3] = -(i >> 3 & 1);
209 
210 		invMaskX0X[i][0] = invMaskX0X[i][1] = invMaskX0X[i][2] = invMaskX0X[i][3] = ~maskX0X[i][0];
211 		invMaskX1X[i][0] = invMaskX1X[i][1] = invMaskX1X[i][2] = invMaskX1X[i][3] = ~maskX1X[i][0];
212 		invMaskX2X[i][0] = invMaskX2X[i][1] = invMaskX2X[i][2] = invMaskX2X[i][3] = ~maskX2X[i][0];
213 		invMaskX3X[i][0] = invMaskX3X[i][1] = invMaskX3X[i][2] = invMaskX3X[i][3] = ~maskX3X[i][0];
214 
215 		maskD01Q[i][0] = -(i >> 0 & 1);
216 		maskD01Q[i][1] = -(i >> 1 & 1);
217 		maskD23Q[i][0] = -(i >> 2 & 1);
218 		maskD23Q[i][1] = -(i >> 3 & 1);
219 
220 		invMaskD01Q[i][0] = ~maskD01Q[i][0];
221 		invMaskD01Q[i][1] = ~maskD01Q[i][1];
222 		invMaskD23Q[i][0] = ~maskD23Q[i][0];
223 		invMaskD23Q[i][1] = ~maskD23Q[i][1];
224 
225 		maskQ01X[i][0] = -(i >> 0 & 1);
226 		maskQ01X[i][1] = -(i >> 1 & 1);
227 		maskQ23X[i][0] = -(i >> 2 & 1);
228 		maskQ23X[i][1] = -(i >> 3 & 1);
229 
230 		invMaskQ01X[i][0] = ~maskQ01X[i][0];
231 		invMaskQ01X[i][1] = ~maskQ01X[i][1];
232 		invMaskQ23X[i][0] = ~maskQ23X[i][0];
233 		invMaskQ23X[i][1] = ~maskQ23X[i][1];
234 	}
235 
236 	for(int i = 0; i < 8; i++)
237 	{
238 		mask565Q[i] = word4((i & 0x1 ? 0x001F : 0) | (i & 0x2 ? 0x07E0 : 0) | (i & 0x4 ? 0xF800 : 0));
239 		mask11X[i] = dword4((i & 0x1 ? 0x000007FFu : 0) | (i & 0x2 ? 0x003FF800u : 0) | (i & 0x4 ? 0xFFC00000u : 0));
240 	}
241 
242 	for(int i = 0; i < 16; i++)
243 	{
244 		mask5551Q[i] = word4((i & 0x1 ? 0x001F : 0) | (i & 0x2 ? 0x03E0 : 0) | (i & 0x4 ? 0x7C00 : 0) | (i & 8 ? 0x8000 : 0));
245 		maskr5g5b5a1Q[i] = word4((i & 0x1 ? 0xF800 : 0) | (i & 0x2 ? 0x07C0 : 0) | (i & 0x4 ? 0x003E : 0) | (i & 8 ? 0x0001 : 0));
246 		maskb5g5r5a1Q[i] = word4((i & 0x1 ? 0x003E : 0) | (i & 0x2 ? 0x07C0 : 0) | (i & 0x4 ? 0xF800 : 0) | (i & 8 ? 0x0001 : 0));
247 		mask4argbQ[i] = word4((i & 0x1 ? 0x00F0 : 0) | (i & 0x2 ? 0x0F00 : 0) | (i & 0x4 ? 0xF000 : 0) | (i & 8 ? 0x000F : 0));
248 		mask4rgbaQ[i] = word4((i & 0x1 ? 0x000F : 0) | (i & 0x2 ? 0x00F0 : 0) | (i & 0x4 ? 0x0F00 : 0) | (i & 8 ? 0xF000 : 0));
249 	}
250 
251 	for(int i = 0; i < 4; i++)
252 	{
253 		maskW01Q[i][0] = -(i >> 0 & 1);
254 		maskW01Q[i][1] = -(i >> 1 & 1);
255 		maskW01Q[i][2] = -(i >> 0 & 1);
256 		maskW01Q[i][3] = -(i >> 1 & 1);
257 
258 		maskD01X[i][0] = -(i >> 0 & 1);
259 		maskD01X[i][1] = -(i >> 1 & 1);
260 		maskD01X[i][2] = -(i >> 0 & 1);
261 		maskD01X[i][3] = -(i >> 1 & 1);
262 	}
263 
264 	for(int i = 0; i < 16; i++)
265 	{
266 		mask10Q[i][0] = mask10Q[i][1] =
267 		    (i & 0x1 ? 0x3FF : 0) |
268 		    (i & 0x2 ? 0xFFC00 : 0) |
269 		    (i & 0x4 ? 0x3FF00000 : 0) |
270 		    (i & 0x8 ? 0xC0000000 : 0);
271 	}
272 
273 	for(int i = 0; i < 256; i++)
274 	{
275 		sRGBtoLinearFF_FF00[i] = (unsigned short)(sRGBtoLinear((float)i / 0xFF) * 0xFF00 + 0.5f);
276 	}
277 
278 	for(int q = 0; q < 4; q++)
279 	{
280 		for(int c = 0; c < 16; c++)
281 		{
282 			for(int i = 0; i < 4; i++)
283 			{
284 				sampleX[q][c][i] = c & (1 << i) ? SampleLocationsX[q] : 0.0f;
285 				sampleY[q][c][i] = c & (1 << i) ? SampleLocationsY[q] : 0.0f;
286 				weight[c][i] = c & (1 << i) ? 1.0f : 0.0f;
287 			}
288 		}
289 	}
290 
291 	constexpr auto subPixB = vk::SUBPIXEL_PRECISION_BITS;
292 
293 	const int Xf[4] = { toFixedPoint(SampleLocationsX[0], subPixB), toFixedPoint(SampleLocationsX[1], subPixB), toFixedPoint(SampleLocationsX[2], subPixB), toFixedPoint(SampleLocationsX[3], subPixB) };
294 	const int Yf[4] = { toFixedPoint(SampleLocationsY[0], subPixB), toFixedPoint(SampleLocationsY[1], subPixB), toFixedPoint(SampleLocationsY[2], subPixB), toFixedPoint(SampleLocationsY[3], subPixB) };
295 
296 	memcpy(&this->Xf, &Xf, sizeof(Xf));
297 	memcpy(&this->Yf, &Yf, sizeof(Yf));
298 
299 	for(int i = 0; i <= 0xFFFF; i++)
300 	{
301 		half2float[i] = static_cast<float>(bit_cast<half>(i));
302 	}
303 }
304 
305 }  // namespace sw
306