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86aad47b | 1 | /*************************************************************************** |
030d1121 | 2 | * Copyright (C) 2016 PCSX4ALL Team * |
86aad47b | 3 | * Copyright (C) 2010 Unai * |
4 | * * | |
5 | * This program is free software; you can redistribute it and/or modify * | |
6 | * it under the terms of the GNU General Public License as published by * | |
7 | * the Free Software Foundation; either version 2 of the License, or * | |
8 | * (at your option) any later version. * | |
9 | * * | |
10 | * This program is distributed in the hope that it will be useful, * | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | |
13 | * GNU General Public License for more details. * | |
14 | * * | |
15 | * You should have received a copy of the GNU General Public License * | |
16 | * along with this program; if not, write to the * | |
17 | * Free Software Foundation, Inc., * | |
18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA. * | |
19 | ***************************************************************************/ | |
20 | ||
21 | #ifndef _OP_LIGHT_H_ | |
22 | #define _OP_LIGHT_H_ | |
23 | ||
24 | // GPU color operations for lighting calculations | |
25 | ||
030d1121 | 26 | static void SetupLightLUT() |
27 | { | |
28 | // 1024-entry lookup table that modulates 5-bit texture + 5-bit light value. | |
29 | // A light value of 15 does not modify the incoming texture color. | |
30 | // LightLUT[32*32] array is initialized to following values: | |
31 | // 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
32 | // 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, | |
33 | // 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, | |
34 | // 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, | |
35 | // 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, | |
36 | // 0, 0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9, 9, | |
37 | // 0, 0, 0, 1, 1, 1, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 6, 6, 6, 7, 7, 7, 8, 8, 9, 9, 9,10,10,10,11,11, | |
38 | // 0, 0, 0, 1, 1, 2, 2, 3, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 7, 8, 8, 9, 9,10,10,10,11,11,12,12,13,13, | |
39 | // 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9,10,10,11,11,12,12,13,13,14,14,15,15, | |
40 | // 0, 0, 1, 1, 2, 2, 3, 3, 4, 5, 5, 6, 6, 7, 7, 8, 9, 9,10,10,11,11,12,12,13,14,14,15,15,16,16,17, | |
41 | // 0, 0, 1, 1, 2, 3, 3, 4, 5, 5, 6, 6, 7, 8, 8, 9,10,10,11,11,12,13,13,14,15,15,16,16,17,18,18,19, | |
42 | // 0, 0, 1, 2, 2, 3, 4, 4, 5, 6, 6, 7, 8, 8, 9,10,11,11,12,13,13,14,15,15,16,17,17,18,19,19,20,21, | |
43 | // 0, 0, 1, 2, 3, 3, 4, 5, 6, 6, 7, 8, 9, 9,10,11,12,12,13,14,15,15,16,17,18,18,19,20,21,21,22,23, | |
44 | // 0, 0, 1, 2, 3, 4, 4, 5, 6, 7, 8, 8, 9,10,11,12,13,13,14,15,16,17,17,18,19,20,21,21,22,23,24,25, | |
45 | // 0, 0, 1, 2, 3, 4, 5, 6, 7, 7, 8, 9,10,11,12,13,14,14,15,16,17,18,19,20,21,21,22,23,24,25,26,27, | |
46 | // 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29, | |
47 | // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31, | |
48 | // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,31, | |
49 | // 0, 1, 2, 3, 4, 5, 6, 7, 9,10,11,12,13,14,15,16,18,19,20,21,22,23,24,25,27,28,29,30,31,31,31,31, | |
50 | // 0, 1, 2, 3, 4, 5, 7, 8, 9,10,11,13,14,15,16,17,19,20,21,22,23,24,26,27,28,29,30,31,31,31,31,31, | |
51 | // 0, 1, 2, 3, 5, 6, 7, 8,10,11,12,13,15,16,17,18,20,21,22,23,25,26,27,28,30,31,31,31,31,31,31,31, | |
52 | // 0, 1, 2, 3, 5, 6, 7, 9,10,11,13,14,15,17,18,19,21,22,23,24,26,27,28,30,31,31,31,31,31,31,31,31, | |
53 | // 0, 1, 2, 4, 5, 6, 8, 9,11,12,13,15,16,17,19,20,22,23,24,26,27,28,30,31,31,31,31,31,31,31,31,31, | |
54 | // 0, 1, 2, 4, 5, 7, 8,10,11,12,14,15,17,18,20,21,23,24,25,27,28,30,31,31,31,31,31,31,31,31,31,31, | |
55 | // 0, 1, 3, 4, 6, 7, 9,10,12,13,15,16,18,19,21,22,24,25,27,28,30,31,31,31,31,31,31,31,31,31,31,31, | |
56 | // 0, 1, 3, 4, 6, 7, 9,10,12,14,15,17,18,20,21,23,25,26,28,29,31,31,31,31,31,31,31,31,31,31,31,31, | |
57 | // 0, 1, 3, 4, 6, 8, 9,11,13,14,16,17,19,21,22,24,26,27,29,30,31,31,31,31,31,31,31,31,31,31,31,31, | |
58 | // 0, 1, 3, 5, 6, 8,10,11,13,15,16,18,20,21,23,25,27,28,30,31,31,31,31,31,31,31,31,31,31,31,31,31, | |
59 | // 0, 1, 3, 5, 7, 8,10,12,14,15,17,19,21,22,24,26,28,29,31,31,31,31,31,31,31,31,31,31,31,31,31,31, | |
60 | // 0, 1, 3, 5, 7, 9,10,12,14,16,18,19,21,23,25,27,29,30,31,31,31,31,31,31,31,31,31,31,31,31,31,31, | |
61 | // 0, 1, 3, 5, 7, 9,11,13,15,16,18,20,22,24,26,28,30,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31, | |
62 | // 0, 1, 3, 5, 7, 9,11,13,15,17,19,21,23,25,27,29,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31 | |
63 | ||
64 | for (int j=0; j < 32; ++j) { | |
65 | for (int i=0; i < 32; ++i) { | |
66 | int val = i * j / 16; | |
67 | if (val > 31) val = 31; | |
68 | gpu_unai.LightLUT[(j*32) + i] = val; | |
69 | } | |
70 | } | |
71 | } | |
72 | ||
73 | ||
74 | //////////////////////////////////////////////////////////////////////////////// | |
75 | // Create packed Gouraud fixed-pt 8.3:8.3:8.2 rgb triplet | |
76 | // | |
77 | // INPUT: | |
78 | // 'r','g','b' are 8.10 fixed-pt color components (r shown here) | |
79 | // 'r' input: --------------rrrrrrrrXXXXXXXXXX | |
80 | // ^ bit 31 | |
81 | // RETURNS: | |
82 | // u32 output: rrrrrrrrXXXggggggggXXXbbbbbbbbXX | |
83 | // ^ bit 31 | |
84 | // Where 'r,g,b' are integer bits of colors, 'X' fixed-pt, and '-' don't care | |
85 | //////////////////////////////////////////////////////////////////////////////// | |
86 | GPU_INLINE u32 gpuPackGouraudCol(u32 r, u32 g, u32 b) | |
87 | { | |
88 | return ((u32)(b>> 8)&(0x03ff )) | |
89 | | ((u32)(g<< 3)&(0x07ff<<10)) | |
90 | | ((u32)(r<<14)&(0x07ff<<21)); | |
91 | } | |
92 | ||
93 | ||
94 | //////////////////////////////////////////////////////////////////////////////// | |
95 | // Create packed increment for Gouraud fixed-pt 8.3:8.3:8.2 rgb triplet | |
96 | // | |
97 | // INPUT: | |
98 | // Sign-extended 8.10 fixed-pt r,g,b color increment values (only dr is shown) | |
99 | // 'dr' input: ssssssssssssssrrrrrrrrXXXXXXXXXX | |
100 | // ^ bit 31 | |
101 | // RETURNS: | |
102 | // u32 output: rrrrrrrrXXXggggggggXXXbbbbbbbbXX | |
103 | // ^ bit 31 | |
104 | // Where 'r,g,b' are integer bits of colors, 'X' fixed-pt, and 's' sign bits | |
105 | // | |
106 | // NOTE: The correctness of this code/method has not been fully verified, | |
107 | // having been merely factored out from original code in | |
108 | // poly-drawing functions. Feel free to check/improve it -senquack | |
109 | //////////////////////////////////////////////////////////////////////////////// | |
110 | GPU_INLINE u32 gpuPackGouraudColInc(s32 dr, s32 dg, s32 db) | |
111 | { | |
112 | u32 dr_tmp = (u32)(dr << 14)&(0xffffffff<<21); if (dr < 0) dr_tmp += 1<<21; | |
113 | u32 dg_tmp = (u32)(dg << 3)&(0xffffffff<<10); if (dg < 0) dg_tmp += 1<<10; | |
114 | u32 db_tmp = (u32)(db >> 8)&(0xffffffff ); if (db < 0) db_tmp += 1<< 0; | |
115 | return db_tmp + dg_tmp + dr_tmp; | |
86aad47b | 116 | } |
86aad47b | 117 | |
030d1121 | 118 | |
119 | //////////////////////////////////////////////////////////////////////////////// | |
120 | // Extract bgr555 color from Gouraud u32 fixed-pt 8.3:8.3:8.2 rgb triplet | |
121 | // | |
122 | // INPUT: | |
123 | // 'gCol' input: rrrrrrrrXXXggggggggXXXbbbbbbbbXX | |
124 | // ^ bit 31 | |
125 | // RETURNS: | |
126 | // u16 output: 0bbbbbgggggrrrrr | |
127 | // ^ bit 16 | |
128 | // Where 'r,g,b' are integer bits of colors, 'X' fixed-pt, and '0' zero | |
129 | //////////////////////////////////////////////////////////////////////////////// | |
92eab56a | 130 | GPU_INLINE uint_fast16_t gpuLightingRGBGeneric(u32 gCol) |
030d1121 | 131 | { |
132 | return ((gCol<< 5)&0x7C00) | | |
133 | ((gCol>>11)&0x03E0) | | |
134 | (gCol>>27); | |
135 | } | |
136 | ||
137 | ||
138 | //////////////////////////////////////////////////////////////////////////////// | |
139 | // Convert packed Gouraud u32 fixed-pt 8.3:8.3:8.2 rgb triplet in 'gCol' | |
140 | // to padded u32 5.4:5.4:5.4 bgr fixed-pt triplet, suitable for use | |
141 | // with HQ 24-bit lighting/quantization. | |
142 | // | |
143 | // INPUT: | |
144 | // 'gCol' input: rrrrrrrrXXXggggggggXXXbbbbbbbbXX | |
145 | // ^ bit 31 | |
146 | // RETURNS: | |
147 | // u32 output: 000bbbbbXXXX0gggggXXXX0rrrrrXXXX | |
148 | // ^ bit 31 | |
149 | // Where 'X' are fixed-pt bits, '0' zero-padding, and '-' is don't care | |
150 | //////////////////////////////////////////////////////////////////////////////// | |
151 | GPU_INLINE u32 gpuLightingRGB24(u32 gCol) | |
152 | { | |
153 | return ((gCol<<19) & (0x1FF<<20)) | | |
154 | ((gCol>> 2) & (0x1FF<<10)) | | |
155 | (gCol>>23); | |
156 | } | |
157 | ||
158 | ||
159 | //////////////////////////////////////////////////////////////////////////////// | |
160 | // Apply fast (low-precision) 5-bit lighting to bgr555 texture color: | |
161 | // | |
162 | // INPUT: | |
163 | // 'r5','g5','b5' are unsigned 5-bit color values, value of 15 | |
164 | // is midpoint that doesn't modify that component of texture | |
165 | // 'uSrc' input: -bbbbbgggggrrrrr | |
166 | // ^ bit 16 | |
167 | // RETURNS: | |
168 | // u16 output: 0bbbbbgggggrrrrr | |
169 | // Where 'X' are fixed-pt bits, '0' is zero-padding, and '-' is don't care | |
170 | //////////////////////////////////////////////////////////////////////////////// | |
92eab56a | 171 | GPU_INLINE uint_fast16_t gpuLightingTXTGeneric(uint_fast16_t uSrc, u8 r5, u8 g5, u8 b5) |
86aad47b | 172 | { |
030d1121 | 173 | return (gpu_unai.LightLUT[((uSrc&0x7C00)>>5) | b5] << 10) | |
174 | (gpu_unai.LightLUT[ (uSrc&0x03E0) | g5] << 5) | | |
175 | (gpu_unai.LightLUT[((uSrc&0x001F)<<5) | r5] ); | |
176 | } | |
177 | ||
178 | ||
179 | //////////////////////////////////////////////////////////////////////////////// | |
180 | // Apply fast (low-precision) 5-bit Gouraud lighting to bgr555 texture color: | |
181 | // | |
182 | // INPUT: | |
183 | // 'gCol' is a packed Gouraud u32 fixed-pt 8.3:8.3:8.2 rgb triplet, value of | |
184 | // 15.0 is midpoint that does not modify color of texture | |
185 | // gCol input : rrrrrXXXXXXgggggXXXXXXbbbbbXXXXX | |
186 | // ^ bit 31 | |
187 | // 'uSrc' input: -bbbbbgggggrrrrr | |
188 | // ^ bit 16 | |
189 | // RETURNS: | |
190 | // u16 output: 0bbbbbgggggrrrrr | |
191 | // Where 'X' are fixed-pt bits, '0' is zero-padding, and '-' is don't care | |
192 | //////////////////////////////////////////////////////////////////////////////// | |
92eab56a | 193 | GPU_INLINE uint_fast16_t gpuLightingTXTGouraudGeneric(uint_fast16_t uSrc, u32 gCol) |
030d1121 | 194 | { |
195 | return (gpu_unai.LightLUT[((uSrc&0x7C00)>>5) | ((gCol>> 5)&0x1F)]<<10) | | |
196 | (gpu_unai.LightLUT[ (uSrc&0x03E0) | ((gCol>>16)&0x1F)]<< 5) | | |
197 | (gpu_unai.LightLUT[((uSrc&0x001F)<<5) | (gCol>>27) ] ); | |
198 | } | |
199 | ||
200 | ||
201 | //////////////////////////////////////////////////////////////////////////////// | |
202 | // Apply high-precision 8-bit lighting to bgr555 texture color, | |
203 | // returning a padded u32 5.4:5.4:5.4 bgr fixed-pt triplet | |
204 | // suitable for use with HQ 24-bit lighting/quantization. | |
205 | // | |
206 | // INPUT: | |
207 | // 'r8','g8','b8' are unsigned 8-bit color component values, value of | |
208 | // 127 is midpoint that doesn't modify that component of texture | |
209 | // | |
210 | // uSrc input: -bbbbbgggggrrrrr | |
211 | // ^ bit 16 | |
212 | // RETURNS: | |
213 | // u32 output: 000bbbbbXXXX0gggggXXXX0rrrrrXXXX | |
214 | // ^ bit 31 | |
215 | // Where 'X' are fixed-pt bits, '0' is zero-padding, and '-' is don't care | |
216 | //////////////////////////////////////////////////////////////////////////////// | |
92eab56a | 217 | GPU_INLINE u32 gpuLightingTXT24(uint_fast16_t uSrc, u8 r8, u8 g8, u8 b8) |
030d1121 | 218 | { |
92eab56a JW |
219 | uint_fast16_t r1 = uSrc&0x001F; |
220 | uint_fast16_t g1 = uSrc&0x03E0; | |
221 | uint_fast16_t b1 = uSrc&0x7C00; | |
030d1121 | 222 | |
92eab56a JW |
223 | uint_fast16_t r2 = r8; |
224 | uint_fast16_t g2 = g8; | |
225 | uint_fast16_t b2 = b8; | |
030d1121 | 226 | |
227 | u32 r3 = r1 * r2; if (r3 & 0xFFFFF000) r3 = ~0xFFFFF000; | |
228 | u32 g3 = g1 * g2; if (g3 & 0xFFFE0000) g3 = ~0xFFFE0000; | |
229 | u32 b3 = b1 * b2; if (b3 & 0xFFC00000) b3 = ~0xFFC00000; | |
230 | ||
231 | return ((r3>> 3) ) | | |
232 | ((g3>> 8)<<10) | | |
233 | ((b3>>13)<<20); | |
234 | } | |
235 | ||
236 | ||
237 | //////////////////////////////////////////////////////////////////////////////// | |
238 | // Apply high-precision 8-bit lighting to bgr555 texture color in 'uSrc', | |
239 | // returning a padded u32 5.4:5.4:5.4 bgr fixed-pt triplet | |
240 | // suitable for use with HQ 24-bit lighting/quantization. | |
241 | // | |
242 | // INPUT: | |
243 | // 'uSrc' input: -bbbbbgggggrrrrr | |
244 | // ^ bit 16 | |
245 | // 'gCol' input: rrrrrrrrXXXggggggggXXXbbbbbbbbXX | |
246 | // ^ bit 31 | |
247 | // RETURNS: | |
248 | // u32 output: 000bbbbbXXXX0gggggXXXX0rrrrrXXXX | |
249 | // ^ bit 31 | |
250 | // Where 'X' are fixed-pt bits, '0' is zero-padding, and '-' is don't care | |
251 | //////////////////////////////////////////////////////////////////////////////// | |
92eab56a | 252 | GPU_INLINE u32 gpuLightingTXT24Gouraud(uint_fast16_t uSrc, u32 gCol) |
030d1121 | 253 | { |
92eab56a JW |
254 | uint_fast16_t r1 = uSrc&0x001F; |
255 | uint_fast16_t g1 = uSrc&0x03E0; | |
256 | uint_fast16_t b1 = uSrc&0x7C00; | |
030d1121 | 257 | |
92eab56a JW |
258 | uint_fast16_t r2 = (gCol>>24) & 0xFF; |
259 | uint_fast16_t g2 = (gCol>>13) & 0xFF; | |
260 | uint_fast16_t b2 = (gCol>> 2) & 0xFF; | |
030d1121 | 261 | |
262 | u32 r3 = r1 * r2; if (r3 & 0xFFFFF000) r3 = ~0xFFFFF000; | |
263 | u32 g3 = g1 * g2; if (g3 & 0xFFFE0000) g3 = ~0xFFFE0000; | |
264 | u32 b3 = b1 * b2; if (b3 & 0xFFC00000) b3 = ~0xFFC00000; | |
265 | ||
266 | return ((r3>> 3) ) | | |
267 | ((g3>> 8)<<10) | | |
268 | ((b3>>13)<<20); | |
86aad47b | 269 | } |
270 | ||
271 | #endif //_OP_LIGHT_H_ |