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freedreno/a6xx: Add ARB_depth_clamp and separate clamp support.
[mesa.git] / src / gallium / drivers / freedreno / a6xx / fd6_format.c
1 /*
2 * Copyright (C) 2016 Rob Clark <robclark@freedesktop.org>
3 * Copyright © 2018 Google, Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 *
24 * Authors:
25 * Rob Clark <robclark@freedesktop.org>
26 */
27
28 #include "pipe/p_defines.h"
29 #include "util/format/u_format.h"
30
31 #include "fd6_format.h"
32 #include "freedreno_resource.h"
33
34
35 /* Specifies the table of all the formats and their features. Also supplies
36 * the helpers that look up various data in those tables.
37 */
38
39 struct fd6_format {
40 enum a6xx_format vtx;
41 enum a6xx_format tex;
42 enum a6xx_format rb;
43 enum a3xx_color_swap swap;
44 boolean present;
45 };
46
47 #define FMT(pipe, vtxfmt, texfmt, rbfmt, swapfmt) \
48 [PIPE_FORMAT_ ## pipe] = { \
49 .present = 1, \
50 .vtx = FMT6_ ## vtxfmt, \
51 .tex = FMT6_ ## texfmt, \
52 .rb = FMT6_ ## rbfmt, \
53 .swap = swapfmt \
54 }
55
56 /* vertex + texture + color */
57 #define VTC(pipe, fmt, swapfmt) FMT(pipe, fmt, fmt, fmt, swapfmt)
58
59 #define _TC(pipe, fmt, swapfmt) FMT(pipe, NONE, fmt, fmt, swapfmt)
60 #define _T_(pipe, fmt, swapfmt) FMT(pipe, NONE, fmt, NONE, swapfmt)
61 #define VT_(pipe, fmt, swapfmt) FMT(pipe, fmt, fmt, NONE, swapfmt)
62 #define V__(pipe, fmt, swapfmt) FMT(pipe, fmt, NONE, NONE, swapfmt)
63
64 static struct fd6_format formats[PIPE_FORMAT_COUNT] = {
65 /* 8-bit */
66 VTC(R8_UNORM, 8_UNORM, WZYX),
67 VTC(R8_SNORM, 8_SNORM, WZYX),
68 VTC(R8_UINT, 8_UINT, WZYX),
69 VTC(R8_SINT, 8_SINT, WZYX),
70 V__(R8_USCALED, 8_UINT, WZYX),
71 V__(R8_SSCALED, 8_SINT, WZYX),
72
73 FMT(A8_UNORM, NONE, 8_UNORM, A8_UNORM, WZYX),
74 _TC(L8_UNORM, 8_UNORM, WZYX),
75 _T_(I8_UNORM, 8_UNORM, WZYX),
76
77 _T_(A8_UINT, 8_UINT, WZYX),
78 _T_(A8_SINT, 8_SINT, WZYX),
79 _T_(L8_UINT, 8_UINT, WZYX),
80 _T_(L8_SINT, 8_SINT, WZYX),
81 _T_(I8_UINT, 8_UINT, WZYX),
82 _T_(I8_SINT, 8_SINT, WZYX),
83
84 _TC(S8_UINT, 8_UINT, WZYX),
85
86 /* 16-bit */
87 VTC(R16_UNORM, 16_UNORM, WZYX),
88 VTC(R16_SNORM, 16_SNORM, WZYX),
89 VTC(R16_UINT, 16_UINT, WZYX),
90 VTC(R16_SINT, 16_SINT, WZYX),
91 V__(R16_USCALED, 16_UINT, WZYX),
92 V__(R16_SSCALED, 16_SINT, WZYX),
93 VTC(R16_FLOAT, 16_FLOAT, WZYX),
94 _TC(Z16_UNORM, 16_UNORM, WZYX),
95
96 _T_(A16_UNORM, 16_UNORM, WZYX),
97 _T_(A16_SNORM, 16_SNORM, WZYX),
98 _T_(A16_UINT, 16_UINT, WZYX),
99 _T_(A16_SINT, 16_SINT, WZYX),
100 _T_(L16_UNORM, 16_UNORM, WZYX),
101 _T_(L16_SNORM, 16_SNORM, WZYX),
102 _T_(L16_UINT, 16_UINT, WZYX),
103 _T_(L16_SINT, 16_SINT, WZYX),
104 _T_(I16_UNORM, 16_UNORM, WZYX),
105 _T_(I16_SNORM, 16_SNORM, WZYX),
106 _T_(I16_UINT, 16_UINT, WZYX),
107 _T_(I16_SINT, 16_SINT, WZYX),
108
109 VTC(R8G8_UNORM, 8_8_UNORM, WZYX),
110 VTC(R8G8_SNORM, 8_8_SNORM, WZYX),
111 VTC(R8G8_UINT, 8_8_UINT, WZYX),
112 VTC(R8G8_SINT, 8_8_SINT, WZYX),
113 V__(R8G8_USCALED, 8_8_UINT, WZYX),
114 V__(R8G8_SSCALED, 8_8_SINT, WZYX),
115
116 _T_(L8A8_UINT, 8_8_UINT, WZYX),
117 _T_(L8A8_SINT, 8_8_SINT, WZYX),
118
119 _TC(B5G6R5_UNORM, 5_6_5_UNORM, WXYZ),
120 _TC(B5G5R5A1_UNORM, 5_5_5_1_UNORM, WXYZ),
121 _TC(B5G5R5X1_UNORM, 5_5_5_1_UNORM, WXYZ),
122 _TC(B4G4R4A4_UNORM, 4_4_4_4_UNORM, WXYZ),
123
124 /* 24-bit */
125 V__(R8G8B8_UNORM, 8_8_8_UNORM, WZYX),
126 V__(R8G8B8_SNORM, 8_8_8_SNORM, WZYX),
127 V__(R8G8B8_UINT, 8_8_8_UINT, WZYX),
128 V__(R8G8B8_SINT, 8_8_8_SINT, WZYX),
129 V__(R8G8B8_USCALED, 8_8_8_UINT, WZYX),
130 V__(R8G8B8_SSCALED, 8_8_8_SINT, WZYX),
131
132 /* 32-bit */
133 V__(R32_UNORM, 32_UNORM, WZYX),
134 V__(R32_SNORM, 32_SNORM, WZYX),
135 VTC(R32_UINT, 32_UINT, WZYX),
136 VTC(R32_SINT, 32_SINT, WZYX),
137 V__(R32_USCALED, 32_UINT, WZYX),
138 V__(R32_SSCALED, 32_SINT, WZYX),
139 VTC(R32_FLOAT, 32_FLOAT, WZYX),
140 V__(R32_FIXED, 32_FIXED, WZYX),
141
142 _T_(A32_UINT, 32_UINT, WZYX),
143 _T_(A32_SINT, 32_SINT, WZYX),
144 _T_(L32_UINT, 32_UINT, WZYX),
145 _T_(L32_SINT, 32_SINT, WZYX),
146 _T_(I32_UINT, 32_UINT, WZYX),
147 _T_(I32_SINT, 32_SINT, WZYX),
148
149 VTC(R16G16_UNORM, 16_16_UNORM, WZYX),
150 VTC(R16G16_SNORM, 16_16_SNORM, WZYX),
151 VTC(R16G16_UINT, 16_16_UINT, WZYX),
152 VTC(R16G16_SINT, 16_16_SINT, WZYX),
153 VT_(R16G16_USCALED, 16_16_UINT, WZYX),
154 VT_(R16G16_SSCALED, 16_16_SINT, WZYX),
155 VTC(R16G16_FLOAT, 16_16_FLOAT, WZYX),
156
157 _T_(L16A16_UNORM, 16_16_UNORM, WZYX),
158 _T_(L16A16_SNORM, 16_16_SNORM, WZYX),
159 _T_(L16A16_UINT, 16_16_UINT, WZYX),
160 _T_(L16A16_SINT, 16_16_SINT, WZYX),
161
162 VTC(R8G8B8A8_UNORM, 8_8_8_8_UNORM, WZYX),
163 _TC(R8G8B8X8_UNORM, 8_8_8_8_UNORM, WZYX),
164 _TC(R8G8B8A8_SRGB, 8_8_8_8_UNORM, WZYX),
165 _TC(R8G8B8X8_SRGB, 8_8_8_8_UNORM, WZYX),
166 VTC(R8G8B8A8_SNORM, 8_8_8_8_SNORM, WZYX),
167 VTC(R8G8B8A8_UINT, 8_8_8_8_UINT, WZYX),
168 VTC(R8G8B8A8_SINT, 8_8_8_8_SINT, WZYX),
169 V__(R8G8B8A8_USCALED, 8_8_8_8_UINT, WZYX),
170 V__(R8G8B8A8_SSCALED, 8_8_8_8_SINT, WZYX),
171
172 VTC(B8G8R8A8_UNORM, 8_8_8_8_UNORM, WXYZ),
173 _TC(B8G8R8X8_UNORM, 8_8_8_8_UNORM, WXYZ),
174 VTC(B8G8R8A8_SRGB, 8_8_8_8_UNORM, WXYZ),
175 _TC(B8G8R8X8_SRGB, 8_8_8_8_UNORM, WXYZ),
176
177 VTC(A8B8G8R8_UNORM, 8_8_8_8_UNORM, XYZW),
178 _TC(X8B8G8R8_UNORM, 8_8_8_8_UNORM, XYZW),
179 _TC(A8B8G8R8_SRGB, 8_8_8_8_UNORM, XYZW),
180 _TC(X8B8G8R8_SRGB, 8_8_8_8_UNORM, XYZW),
181
182 VTC(A8R8G8B8_UNORM, 8_8_8_8_UNORM, ZYXW),
183 _TC(X8R8G8B8_UNORM, 8_8_8_8_UNORM, ZYXW),
184 _TC(A8R8G8B8_SRGB, 8_8_8_8_UNORM, ZYXW),
185 _TC(X8R8G8B8_SRGB, 8_8_8_8_UNORM, ZYXW),
186
187 FMT(R10G10B10A2_UNORM, 10_10_10_2_UNORM, 10_10_10_2_UNORM, 10_10_10_2_UNORM_DEST, WZYX),
188 FMT(B10G10R10A2_UNORM, 10_10_10_2_UNORM, 10_10_10_2_UNORM, 10_10_10_2_UNORM_DEST, WXYZ),
189 FMT(B10G10R10X2_UNORM, NONE, 10_10_10_2_UNORM, 10_10_10_2_UNORM_DEST, WXYZ),
190 V__(R10G10B10A2_SNORM, 10_10_10_2_SNORM, WZYX),
191 V__(B10G10R10A2_SNORM, 10_10_10_2_SNORM, WXYZ),
192 VTC(R10G10B10A2_UINT, 10_10_10_2_UINT, WZYX),
193 VTC(B10G10R10A2_UINT, 10_10_10_2_UINT, WXYZ),
194 V__(R10G10B10A2_USCALED, 10_10_10_2_UINT, WZYX),
195 V__(B10G10R10A2_USCALED, 10_10_10_2_UINT, WXYZ),
196 V__(R10G10B10A2_SSCALED, 10_10_10_2_SINT, WZYX),
197 V__(B10G10R10A2_SSCALED, 10_10_10_2_SINT, WXYZ),
198
199 VTC(R11G11B10_FLOAT, 11_11_10_FLOAT, WZYX),
200 _T_(R9G9B9E5_FLOAT, 9_9_9_E5_FLOAT, WZYX),
201
202 _TC(Z24X8_UNORM, Z24_UNORM_S8_UINT, WZYX),
203 _TC(X24S8_UINT, 8_8_8_8_UINT, WZYX),
204 _TC(Z24_UNORM_S8_UINT, Z24_UNORM_S8_UINT, WZYX),
205 _TC(Z32_FLOAT, 32_FLOAT, WZYX),
206 _TC(Z32_FLOAT_S8X24_UINT, 32_FLOAT, WZYX),
207 _TC(X32_S8X24_UINT, 8_UINT, WZYX),
208
209 /* special format for blits: */
210 _TC(Z24_UNORM_S8_UINT_AS_R8G8B8A8, Z24_UNORM_S8_UINT_AS_R8G8B8A8, WZYX),
211
212 /* 48-bit */
213 V__(R16G16B16_UNORM, 16_16_16_UNORM, WZYX),
214 V__(R16G16B16_SNORM, 16_16_16_SNORM, WZYX),
215 V__(R16G16B16_UINT, 16_16_16_UINT, WZYX),
216 V__(R16G16B16_SINT, 16_16_16_SINT, WZYX),
217 V__(R16G16B16_USCALED, 16_16_16_UINT, WZYX),
218 V__(R16G16B16_SSCALED, 16_16_16_SINT, WZYX),
219 V__(R16G16B16_FLOAT, 16_16_16_FLOAT, WZYX),
220
221 /* 64-bit */
222 VTC(R16G16B16A16_UNORM, 16_16_16_16_UNORM, WZYX),
223 VTC(R16G16B16X16_UNORM, 16_16_16_16_UNORM, WZYX),
224 VTC(R16G16B16A16_SNORM, 16_16_16_16_SNORM, WZYX),
225 VTC(R16G16B16X16_SNORM, 16_16_16_16_SNORM, WZYX),
226 VTC(R16G16B16A16_UINT, 16_16_16_16_UINT, WZYX),
227 VTC(R16G16B16X16_UINT, 16_16_16_16_UINT, WZYX),
228 VTC(R16G16B16A16_SINT, 16_16_16_16_SINT, WZYX),
229 VTC(R16G16B16X16_SINT, 16_16_16_16_SINT, WZYX),
230 VT_(R16G16B16A16_USCALED, 16_16_16_16_UINT, WZYX),
231 VT_(R16G16B16A16_SSCALED, 16_16_16_16_SINT, WZYX),
232 VTC(R16G16B16A16_FLOAT, 16_16_16_16_FLOAT, WZYX),
233 VTC(R16G16B16X16_FLOAT, 16_16_16_16_FLOAT, WZYX),
234
235 V__(R32G32_UNORM, 32_32_UNORM, WZYX),
236 V__(R32G32_SNORM, 32_32_SNORM, WZYX),
237 VTC(R32G32_UINT, 32_32_UINT, WZYX),
238 VTC(R32G32_SINT, 32_32_SINT, WZYX),
239 V__(R32G32_USCALED, 32_32_UINT, WZYX),
240 V__(R32G32_SSCALED, 32_32_SINT, WZYX),
241 VTC(R32G32_FLOAT, 32_32_FLOAT, WZYX),
242 V__(R32G32_FIXED, 32_32_FIXED, WZYX),
243
244 _T_(L32A32_UINT, 32_32_UINT, WZYX),
245 _T_(L32A32_SINT, 32_32_SINT, WZYX),
246
247 /* 96-bit */
248 V__(R32G32B32_UNORM, 32_32_32_UNORM, WZYX),
249 V__(R32G32B32_SNORM, 32_32_32_SNORM, WZYX),
250 VT_(R32G32B32_UINT, 32_32_32_UINT, WZYX),
251 VT_(R32G32B32_SINT, 32_32_32_SINT, WZYX),
252 V__(R32G32B32_USCALED, 32_32_32_UINT, WZYX),
253 V__(R32G32B32_SSCALED, 32_32_32_SINT, WZYX),
254 VT_(R32G32B32_FLOAT, 32_32_32_FLOAT, WZYX),
255 V__(R32G32B32_FIXED, 32_32_32_FIXED, WZYX),
256
257 /* 128-bit */
258 V__(R32G32B32A32_UNORM, 32_32_32_32_UNORM, WZYX),
259 V__(R32G32B32A32_SNORM, 32_32_32_32_SNORM, WZYX),
260 VTC(R32G32B32A32_UINT, 32_32_32_32_UINT, WZYX),
261 _TC(R32G32B32X32_UINT, 32_32_32_32_UINT, WZYX),
262 VTC(R32G32B32A32_SINT, 32_32_32_32_SINT, WZYX),
263 _TC(R32G32B32X32_SINT, 32_32_32_32_SINT, WZYX),
264 V__(R32G32B32A32_USCALED, 32_32_32_32_UINT, WZYX),
265 V__(R32G32B32A32_SSCALED, 32_32_32_32_SINT, WZYX),
266 VTC(R32G32B32A32_FLOAT, 32_32_32_32_FLOAT, WZYX),
267 _TC(R32G32B32X32_FLOAT, 32_32_32_32_FLOAT, WZYX),
268 V__(R32G32B32A32_FIXED, 32_32_32_32_FIXED, WZYX),
269
270 /* compressed */
271 _T_(ETC1_RGB8, ETC1, WZYX),
272 _T_(ETC2_RGB8, ETC2_RGB8, WZYX),
273 _T_(ETC2_SRGB8, ETC2_RGB8, WZYX),
274 _T_(ETC2_RGB8A1, ETC2_RGB8A1, WZYX),
275 _T_(ETC2_SRGB8A1, ETC2_RGB8A1, WZYX),
276 _T_(ETC2_RGBA8, ETC2_RGBA8, WZYX),
277 _T_(ETC2_SRGBA8, ETC2_RGBA8, WZYX),
278 _T_(ETC2_R11_UNORM, ETC2_R11_UNORM, WZYX),
279 _T_(ETC2_R11_SNORM, ETC2_R11_SNORM, WZYX),
280 _T_(ETC2_RG11_UNORM, ETC2_RG11_UNORM, WZYX),
281 _T_(ETC2_RG11_SNORM, ETC2_RG11_SNORM, WZYX),
282
283 _T_(DXT1_RGB, DXT1, WZYX),
284 _T_(DXT1_SRGB, DXT1, WZYX),
285 _T_(DXT1_RGBA, DXT1, WZYX),
286 _T_(DXT1_SRGBA, DXT1, WZYX),
287 _T_(DXT3_RGBA, DXT3, WZYX),
288 _T_(DXT3_SRGBA, DXT3, WZYX),
289 _T_(DXT5_RGBA, DXT5, WZYX),
290 _T_(DXT5_SRGBA, DXT5, WZYX),
291
292 _T_(BPTC_RGBA_UNORM, BPTC, WZYX),
293 _T_(BPTC_SRGBA, BPTC, WZYX),
294 _T_(BPTC_RGB_FLOAT, BPTC_FLOAT, WZYX),
295 _T_(BPTC_RGB_UFLOAT, BPTC_UFLOAT, WZYX),
296
297 _T_(RGTC1_UNORM, RGTC1_UNORM, WZYX),
298 _T_(RGTC1_SNORM, RGTC1_SNORM, WZYX),
299 _T_(RGTC2_UNORM, RGTC2_UNORM, WZYX),
300 _T_(RGTC2_SNORM, RGTC2_SNORM, WZYX),
301 _T_(LATC1_UNORM, RGTC1_UNORM, WZYX),
302 _T_(LATC1_SNORM, RGTC1_SNORM, WZYX),
303 _T_(LATC2_UNORM, RGTC2_UNORM, WZYX),
304 _T_(LATC2_SNORM, RGTC2_SNORM, WZYX),
305
306 _T_(ASTC_4x4, ASTC_4x4, WZYX),
307 _T_(ASTC_5x4, ASTC_5x4, WZYX),
308 _T_(ASTC_5x5, ASTC_5x5, WZYX),
309 _T_(ASTC_6x5, ASTC_6x5, WZYX),
310 _T_(ASTC_6x6, ASTC_6x6, WZYX),
311 _T_(ASTC_8x5, ASTC_8x5, WZYX),
312 _T_(ASTC_8x6, ASTC_8x6, WZYX),
313 _T_(ASTC_8x8, ASTC_8x8, WZYX),
314 _T_(ASTC_10x5, ASTC_10x5, WZYX),
315 _T_(ASTC_10x6, ASTC_10x6, WZYX),
316 _T_(ASTC_10x8, ASTC_10x8, WZYX),
317 _T_(ASTC_10x10, ASTC_10x10, WZYX),
318 _T_(ASTC_12x10, ASTC_12x10, WZYX),
319 _T_(ASTC_12x12, ASTC_12x12, WZYX),
320
321 _T_(ASTC_4x4_SRGB, ASTC_4x4, WZYX),
322 _T_(ASTC_5x4_SRGB, ASTC_5x4, WZYX),
323 _T_(ASTC_5x5_SRGB, ASTC_5x5, WZYX),
324 _T_(ASTC_6x5_SRGB, ASTC_6x5, WZYX),
325 _T_(ASTC_6x6_SRGB, ASTC_6x6, WZYX),
326 _T_(ASTC_8x5_SRGB, ASTC_8x5, WZYX),
327 _T_(ASTC_8x6_SRGB, ASTC_8x6, WZYX),
328 _T_(ASTC_8x8_SRGB, ASTC_8x8, WZYX),
329 _T_(ASTC_10x5_SRGB, ASTC_10x5, WZYX),
330 _T_(ASTC_10x6_SRGB, ASTC_10x6, WZYX),
331 _T_(ASTC_10x8_SRGB, ASTC_10x8, WZYX),
332 _T_(ASTC_10x10_SRGB, ASTC_10x10, WZYX),
333 _T_(ASTC_12x10_SRGB, ASTC_12x10, WZYX),
334 _T_(ASTC_12x12_SRGB, ASTC_12x12, WZYX),
335 };
336
337 /* convert pipe format to vertex buffer format: */
338 enum a6xx_format
339 fd6_pipe2vtx(enum pipe_format format)
340 {
341 if (!formats[format].present)
342 return FMT6_NONE;
343 return formats[format].vtx;
344 }
345
346 /* convert pipe format to texture sampler format: */
347 enum a6xx_format
348 fd6_pipe2tex(enum pipe_format format)
349 {
350 if (!formats[format].present)
351 return FMT6_NONE;
352 return formats[format].tex;
353 }
354
355 /* convert pipe format to MRT / copydest format used for render-target: */
356 enum a6xx_format
357 fd6_pipe2color(enum pipe_format format)
358 {
359 if (!formats[format].present)
360 return FMT6_NONE;
361 return formats[format].rb;
362 }
363
364 enum a3xx_color_swap
365 fd6_pipe2swap(enum pipe_format format)
366 {
367 if (!formats[format].present)
368 return WZYX;
369 return formats[format].swap;
370 }
371
372 enum a6xx_depth_format
373 fd6_pipe2depth(enum pipe_format format)
374 {
375 switch (format) {
376 case PIPE_FORMAT_Z16_UNORM:
377 return DEPTH6_16;
378 case PIPE_FORMAT_Z24X8_UNORM:
379 case PIPE_FORMAT_Z24_UNORM_S8_UINT:
380 case PIPE_FORMAT_X8Z24_UNORM:
381 case PIPE_FORMAT_S8_UINT_Z24_UNORM:
382 return DEPTH6_24_8;
383 case PIPE_FORMAT_Z32_FLOAT:
384 case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
385 return DEPTH6_32;
386 default:
387 return ~0;
388 }
389 }
390
391 enum a6xx_tex_swiz
392 fd6_pipe2swiz(unsigned swiz)
393 {
394 switch (swiz) {
395 default:
396 case PIPE_SWIZZLE_X: return A6XX_TEX_X;
397 case PIPE_SWIZZLE_Y: return A6XX_TEX_Y;
398 case PIPE_SWIZZLE_Z: return A6XX_TEX_Z;
399 case PIPE_SWIZZLE_W: return A6XX_TEX_W;
400 case PIPE_SWIZZLE_0: return A6XX_TEX_ZERO;
401 case PIPE_SWIZZLE_1: return A6XX_TEX_ONE;
402 }
403 }
404
405 void
406 fd6_tex_swiz(enum pipe_format format, unsigned char *swiz,
407 unsigned swizzle_r, unsigned swizzle_g,
408 unsigned swizzle_b, unsigned swizzle_a)
409 {
410 const struct util_format_description *desc =
411 util_format_description(format);
412 const unsigned char uswiz[4] = {
413 swizzle_r, swizzle_g, swizzle_b, swizzle_a
414 };
415
416 /* Gallium expects stencil sampler to return (s,s,s,s), so massage
417 * the swizzle to do so.
418 */
419 if (format == PIPE_FORMAT_X24S8_UINT) {
420 const unsigned char stencil_swiz[4] = {
421 PIPE_SWIZZLE_W, PIPE_SWIZZLE_W, PIPE_SWIZZLE_W, PIPE_SWIZZLE_W
422 };
423 util_format_compose_swizzles(stencil_swiz, uswiz, swiz);
424 } else if (fd6_pipe2swap(format) != WZYX) {
425 /* Formats with a non-pass-through swap are permutations of RGBA
426 * formats. We program the permutation using the swap and don't
427 * need to compose the format swizzle with the user swizzle.
428 */
429 memcpy(swiz, uswiz, sizeof(uswiz));
430 } else {
431 /* Otherwise, it's an unswapped RGBA format or a format like L8 where
432 * we need the XXX1 swizzle from the gallium format description.
433 */
434 util_format_compose_swizzles(desc->swizzle, uswiz, swiz);
435 }
436 }
437
438 /* Compute the TEX_CONST_0 value for texture state, including SWIZ/SWAP/etc: */
439 uint32_t
440 fd6_tex_const_0(struct pipe_resource *prsc,
441 unsigned level, enum pipe_format format,
442 unsigned swizzle_r, unsigned swizzle_g,
443 unsigned swizzle_b, unsigned swizzle_a)
444 {
445 struct fd_resource *rsc = fd_resource(prsc);
446 unsigned char swiz[4];
447
448 fd6_tex_swiz(format, swiz,
449 swizzle_r, swizzle_g,
450 swizzle_b, swizzle_a);
451
452 return
453 A6XX_TEX_CONST_0_FMT(fd6_pipe2tex(format)) |
454 A6XX_TEX_CONST_0_SAMPLES(fd_msaa_samples(prsc->nr_samples)) |
455 A6XX_TEX_CONST_0_SWAP(fd6_resource_swap(rsc, format)) |
456 A6XX_TEX_CONST_0_TILE_MODE(fd_resource_tile_mode(prsc, level)) |
457 COND(util_format_is_srgb(format), A6XX_TEX_CONST_0_SRGB) |
458 A6XX_TEX_CONST_0_SWIZ_X(fd6_pipe2swiz(swiz[0])) |
459 A6XX_TEX_CONST_0_SWIZ_Y(fd6_pipe2swiz(swiz[1])) |
460 A6XX_TEX_CONST_0_SWIZ_Z(fd6_pipe2swiz(swiz[2])) |
461 A6XX_TEX_CONST_0_SWIZ_W(fd6_pipe2swiz(swiz[3]));
462 }