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f84313545023541fd4308df851b17c701973f330
[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 FMT6_NONE ~0
48
49 #define FMT(pipe, vtxfmt, texfmt, rbfmt, swapfmt) \
50 [PIPE_FORMAT_ ## pipe] = { \
51 .present = 1, \
52 .vtx = FMT6_ ## vtxfmt, \
53 .tex = FMT6_ ## texfmt, \
54 .rb = FMT6_ ## rbfmt, \
55 .swap = swapfmt \
56 }
57
58 /* vertex + texture + color */
59 #define VTC(pipe, fmt, swapfmt) FMT(pipe, fmt, fmt, fmt, swapfmt)
60
61 #define _TC(pipe, fmt, swapfmt) FMT(pipe, NONE, fmt, fmt, swapfmt)
62 #define _T_(pipe, fmt, swapfmt) FMT(pipe, NONE, fmt, NONE, swapfmt)
63 #define VT_(pipe, fmt, swapfmt) FMT(pipe, fmt, fmt, NONE, swapfmt)
64 #define V__(pipe, fmt, swapfmt) FMT(pipe, fmt, NONE, NONE, swapfmt)
65
66 static struct fd6_format formats[PIPE_FORMAT_COUNT] = {
67 /* 8-bit */
68 VTC(R8_UNORM, 8_UNORM, WZYX),
69 VTC(R8_SNORM, 8_SNORM, WZYX),
70 VTC(R8_UINT, 8_UINT, WZYX),
71 VTC(R8_SINT, 8_SINT, WZYX),
72 V__(R8_USCALED, 8_UINT, WZYX),
73 V__(R8_SSCALED, 8_SINT, WZYX),
74
75 FMT(A8_UNORM, NONE, 8_UNORM, A8_UNORM, WZYX),
76 _TC(L8_UNORM, 8_UNORM, WZYX),
77 _T_(I8_UNORM, 8_UNORM, WZYX),
78
79 _T_(A8_UINT, 8_UINT, WZYX),
80 _T_(A8_SINT, 8_SINT, WZYX),
81 _T_(L8_UINT, 8_UINT, WZYX),
82 _T_(L8_SINT, 8_SINT, WZYX),
83 _T_(I8_UINT, 8_UINT, WZYX),
84 _T_(I8_SINT, 8_SINT, WZYX),
85
86 _TC(S8_UINT, 8_UINT, WZYX),
87
88 /* 16-bit */
89 VTC(R16_UNORM, 16_UNORM, WZYX),
90 VTC(R16_SNORM, 16_SNORM, WZYX),
91 VTC(R16_UINT, 16_UINT, WZYX),
92 VTC(R16_SINT, 16_SINT, WZYX),
93 V__(R16_USCALED, 16_UINT, WZYX),
94 V__(R16_SSCALED, 16_SINT, WZYX),
95 VTC(R16_FLOAT, 16_FLOAT, WZYX),
96 _TC(Z16_UNORM, 16_UNORM, WZYX),
97
98 _T_(A16_UNORM, 16_UNORM, WZYX),
99 _T_(A16_SNORM, 16_SNORM, WZYX),
100 _T_(A16_UINT, 16_UINT, WZYX),
101 _T_(A16_SINT, 16_SINT, WZYX),
102 _T_(L16_UNORM, 16_UNORM, WZYX),
103 _T_(L16_SNORM, 16_SNORM, WZYX),
104 _T_(L16_UINT, 16_UINT, WZYX),
105 _T_(L16_SINT, 16_SINT, WZYX),
106 _T_(I16_UNORM, 16_UNORM, WZYX),
107 _T_(I16_SNORM, 16_SNORM, WZYX),
108 _T_(I16_UINT, 16_UINT, WZYX),
109 _T_(I16_SINT, 16_SINT, WZYX),
110
111 VTC(R8G8_UNORM, 8_8_UNORM, WZYX),
112 VTC(R8G8_SNORM, 8_8_SNORM, WZYX),
113 VTC(R8G8_UINT, 8_8_UINT, WZYX),
114 VTC(R8G8_SINT, 8_8_SINT, WZYX),
115 V__(R8G8_USCALED, 8_8_UINT, WZYX),
116 V__(R8G8_SSCALED, 8_8_SINT, WZYX),
117
118 _T_(L8A8_UINT, 8_8_UINT, WZYX),
119 _T_(L8A8_SINT, 8_8_SINT, WZYX),
120
121 _TC(B5G6R5_UNORM, 5_6_5_UNORM, WXYZ),
122 _TC(B5G5R5A1_UNORM, 5_5_5_1_UNORM, WXYZ),
123 _TC(B5G5R5X1_UNORM, 5_5_5_1_UNORM, WXYZ),
124 _TC(B4G4R4A4_UNORM, 4_4_4_4_UNORM, WXYZ),
125
126 /* 24-bit */
127 V__(R8G8B8_UNORM, 8_8_8_UNORM, WZYX),
128 V__(R8G8B8_SNORM, 8_8_8_SNORM, WZYX),
129 V__(R8G8B8_UINT, 8_8_8_UINT, WZYX),
130 V__(R8G8B8_SINT, 8_8_8_SINT, WZYX),
131 V__(R8G8B8_USCALED, 8_8_8_UINT, WZYX),
132 V__(R8G8B8_SSCALED, 8_8_8_SINT, WZYX),
133
134 /* 32-bit */
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 VTC(R32G32_UINT, 32_32_UINT, WZYX),
236 VTC(R32G32_SINT, 32_32_SINT, WZYX),
237 V__(R32G32_USCALED, 32_32_UINT, WZYX),
238 V__(R32G32_SSCALED, 32_32_SINT, WZYX),
239 VTC(R32G32_FLOAT, 32_32_FLOAT, WZYX),
240 V__(R32G32_FIXED, 32_32_FIXED, WZYX),
241
242 _T_(L32A32_UINT, 32_32_UINT, WZYX),
243 _T_(L32A32_SINT, 32_32_SINT, WZYX),
244
245 /* 96-bit */
246 VT_(R32G32B32_UINT, 32_32_32_UINT, WZYX),
247 VT_(R32G32B32_SINT, 32_32_32_SINT, WZYX),
248 V__(R32G32B32_USCALED, 32_32_32_UINT, WZYX),
249 V__(R32G32B32_SSCALED, 32_32_32_SINT, WZYX),
250 VT_(R32G32B32_FLOAT, 32_32_32_FLOAT, WZYX),
251 V__(R32G32B32_FIXED, 32_32_32_FIXED, WZYX),
252
253 /* 128-bit */
254 VTC(R32G32B32A32_UINT, 32_32_32_32_UINT, WZYX),
255 _TC(R32G32B32X32_UINT, 32_32_32_32_UINT, WZYX),
256 VTC(R32G32B32A32_SINT, 32_32_32_32_SINT, WZYX),
257 _TC(R32G32B32X32_SINT, 32_32_32_32_SINT, WZYX),
258 V__(R32G32B32A32_USCALED, 32_32_32_32_UINT, WZYX),
259 V__(R32G32B32A32_SSCALED, 32_32_32_32_SINT, WZYX),
260 VTC(R32G32B32A32_FLOAT, 32_32_32_32_FLOAT, WZYX),
261 _TC(R32G32B32X32_FLOAT, 32_32_32_32_FLOAT, WZYX),
262 V__(R32G32B32A32_FIXED, 32_32_32_32_FIXED, WZYX),
263
264 /* compressed */
265 _T_(ETC1_RGB8, ETC1, WZYX),
266 _T_(ETC2_RGB8, ETC2_RGB8, WZYX),
267 _T_(ETC2_SRGB8, ETC2_RGB8, WZYX),
268 _T_(ETC2_RGB8A1, ETC2_RGB8A1, WZYX),
269 _T_(ETC2_SRGB8A1, ETC2_RGB8A1, WZYX),
270 _T_(ETC2_RGBA8, ETC2_RGBA8, WZYX),
271 _T_(ETC2_SRGBA8, ETC2_RGBA8, WZYX),
272 _T_(ETC2_R11_UNORM, ETC2_R11_UNORM, WZYX),
273 _T_(ETC2_R11_SNORM, ETC2_R11_SNORM, WZYX),
274 _T_(ETC2_RG11_UNORM, ETC2_RG11_UNORM, WZYX),
275 _T_(ETC2_RG11_SNORM, ETC2_RG11_SNORM, WZYX),
276
277 _T_(DXT1_RGB, DXT1, WZYX),
278 _T_(DXT1_SRGB, DXT1, WZYX),
279 _T_(DXT1_RGBA, DXT1, WZYX),
280 _T_(DXT1_SRGBA, DXT1, WZYX),
281 _T_(DXT3_RGBA, DXT3, WZYX),
282 _T_(DXT3_SRGBA, DXT3, WZYX),
283 _T_(DXT5_RGBA, DXT5, WZYX),
284 _T_(DXT5_SRGBA, DXT5, WZYX),
285
286 _T_(BPTC_RGBA_UNORM, BPTC, WZYX),
287 _T_(BPTC_SRGBA, BPTC, WZYX),
288 _T_(BPTC_RGB_FLOAT, BPTC_FLOAT, WZYX),
289 _T_(BPTC_RGB_UFLOAT, BPTC_UFLOAT, WZYX),
290
291 _T_(RGTC1_UNORM, RGTC1_UNORM, WZYX),
292 _T_(RGTC1_SNORM, RGTC1_SNORM, WZYX),
293 _T_(RGTC2_UNORM, RGTC2_UNORM, WZYX),
294 _T_(RGTC2_SNORM, RGTC2_SNORM, WZYX),
295 _T_(LATC1_UNORM, RGTC1_UNORM, WZYX),
296 _T_(LATC1_SNORM, RGTC1_SNORM, WZYX),
297 _T_(LATC2_UNORM, RGTC2_UNORM, WZYX),
298 _T_(LATC2_SNORM, RGTC2_SNORM, WZYX),
299
300 _T_(ASTC_4x4, ASTC_4x4, WZYX),
301 _T_(ASTC_5x4, ASTC_5x4, WZYX),
302 _T_(ASTC_5x5, ASTC_5x5, WZYX),
303 _T_(ASTC_6x5, ASTC_6x5, WZYX),
304 _T_(ASTC_6x6, ASTC_6x6, WZYX),
305 _T_(ASTC_8x5, ASTC_8x5, WZYX),
306 _T_(ASTC_8x6, ASTC_8x6, WZYX),
307 _T_(ASTC_8x8, ASTC_8x8, WZYX),
308 _T_(ASTC_10x5, ASTC_10x5, WZYX),
309 _T_(ASTC_10x6, ASTC_10x6, WZYX),
310 _T_(ASTC_10x8, ASTC_10x8, WZYX),
311 _T_(ASTC_10x10, ASTC_10x10, WZYX),
312 _T_(ASTC_12x10, ASTC_12x10, WZYX),
313 _T_(ASTC_12x12, ASTC_12x12, WZYX),
314
315 _T_(ASTC_4x4_SRGB, ASTC_4x4, WZYX),
316 _T_(ASTC_5x4_SRGB, ASTC_5x4, WZYX),
317 _T_(ASTC_5x5_SRGB, ASTC_5x5, WZYX),
318 _T_(ASTC_6x5_SRGB, ASTC_6x5, WZYX),
319 _T_(ASTC_6x6_SRGB, ASTC_6x6, WZYX),
320 _T_(ASTC_8x5_SRGB, ASTC_8x5, WZYX),
321 _T_(ASTC_8x6_SRGB, ASTC_8x6, WZYX),
322 _T_(ASTC_8x8_SRGB, ASTC_8x8, WZYX),
323 _T_(ASTC_10x5_SRGB, ASTC_10x5, WZYX),
324 _T_(ASTC_10x6_SRGB, ASTC_10x6, WZYX),
325 _T_(ASTC_10x8_SRGB, ASTC_10x8, WZYX),
326 _T_(ASTC_10x10_SRGB, ASTC_10x10, WZYX),
327 _T_(ASTC_12x10_SRGB, ASTC_12x10, WZYX),
328 _T_(ASTC_12x12_SRGB, ASTC_12x12, WZYX),
329 };
330
331 /* convert pipe format to vertex buffer format: */
332 enum a6xx_format
333 fd6_pipe2vtx(enum pipe_format format)
334 {
335 if (!formats[format].present)
336 return ~0;
337 return formats[format].vtx;
338 }
339
340 /* convert pipe format to texture sampler format: */
341 enum a6xx_format
342 fd6_pipe2tex(enum pipe_format format)
343 {
344 if (!formats[format].present)
345 return ~0;
346 return formats[format].tex;
347 }
348
349 /* convert pipe format to MRT / copydest format used for render-target: */
350 enum a6xx_format
351 fd6_pipe2color(enum pipe_format format)
352 {
353 if (!formats[format].present)
354 return ~0;
355 return formats[format].rb;
356 }
357
358 enum a3xx_color_swap
359 fd6_pipe2swap(enum pipe_format format)
360 {
361 if (!formats[format].present)
362 return WZYX;
363 return formats[format].swap;
364 }
365
366 // XXX possibly same as a4xx..
367 enum a6xx_tex_fetchsize
368 fd6_pipe2fetchsize(enum pipe_format format)
369 {
370 if (format == PIPE_FORMAT_Z32_FLOAT_S8X24_UINT)
371 format = PIPE_FORMAT_Z32_FLOAT;
372
373 if (util_format_description(format)->layout == UTIL_FORMAT_LAYOUT_ASTC)
374 return TFETCH6_16_BYTE;
375
376 switch (util_format_get_blocksizebits(format) / util_format_get_blockwidth(format)) {
377 case 8: return TFETCH6_1_BYTE;
378 case 16: return TFETCH6_2_BYTE;
379 case 32: return TFETCH6_4_BYTE;
380 case 64: return TFETCH6_8_BYTE;
381 case 96: return TFETCH6_1_BYTE; /* Does this matter? */
382 case 128: return TFETCH6_16_BYTE;
383 default:
384 debug_printf("Unknown block size for format %s: %d\n",
385 util_format_name(format),
386 util_format_get_blocksizebits(format));
387 return TFETCH6_1_BYTE;
388 }
389 }
390
391 enum a6xx_depth_format
392 fd6_pipe2depth(enum pipe_format format)
393 {
394 switch (format) {
395 case PIPE_FORMAT_Z16_UNORM:
396 return DEPTH6_16;
397 case PIPE_FORMAT_Z24X8_UNORM:
398 case PIPE_FORMAT_Z24_UNORM_S8_UINT:
399 case PIPE_FORMAT_X8Z24_UNORM:
400 case PIPE_FORMAT_S8_UINT_Z24_UNORM:
401 return DEPTH6_24_8;
402 case PIPE_FORMAT_Z32_FLOAT:
403 case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
404 return DEPTH6_32;
405 default:
406 return ~0;
407 }
408 }
409
410 enum a6xx_tex_swiz
411 fd6_pipe2swiz(unsigned swiz)
412 {
413 switch (swiz) {
414 default:
415 case PIPE_SWIZZLE_X: return A6XX_TEX_X;
416 case PIPE_SWIZZLE_Y: return A6XX_TEX_Y;
417 case PIPE_SWIZZLE_Z: return A6XX_TEX_Z;
418 case PIPE_SWIZZLE_W: return A6XX_TEX_W;
419 case PIPE_SWIZZLE_0: return A6XX_TEX_ZERO;
420 case PIPE_SWIZZLE_1: return A6XX_TEX_ONE;
421 }
422 }
423
424 void
425 fd6_tex_swiz(enum pipe_format format, unsigned char *swiz,
426 unsigned swizzle_r, unsigned swizzle_g,
427 unsigned swizzle_b, unsigned swizzle_a)
428 {
429 const struct util_format_description *desc =
430 util_format_description(format);
431 const unsigned char uswiz[4] = {
432 swizzle_r, swizzle_g, swizzle_b, swizzle_a
433 };
434
435 /* Gallium expects stencil sampler to return (s,s,s,s), so massage
436 * the swizzle to do so.
437 */
438 if (format == PIPE_FORMAT_X24S8_UINT) {
439 const unsigned char stencil_swiz[4] = {
440 PIPE_SWIZZLE_W, PIPE_SWIZZLE_W, PIPE_SWIZZLE_W, PIPE_SWIZZLE_W
441 };
442 util_format_compose_swizzles(stencil_swiz, uswiz, swiz);
443 } else if (fd6_pipe2swap(format) != WZYX) {
444 /* Formats with a non-pass-through swap are permutations of RGBA
445 * formats. We program the permutation using the swap and don't
446 * need to compose the format swizzle with the user swizzle.
447 */
448 memcpy(swiz, uswiz, sizeof(uswiz));
449 } else {
450 /* Otherwise, it's an unswapped RGBA format or a format like L8 where
451 * we need the XXX1 swizzle from the gallium format description.
452 */
453 util_format_compose_swizzles(desc->swizzle, uswiz, swiz);
454 }
455 }
456
457 /* Compute the TEX_CONST_0 value for texture state, including SWIZ/SWAP/etc: */
458 uint32_t
459 fd6_tex_const_0(struct pipe_resource *prsc,
460 unsigned level, enum pipe_format format,
461 unsigned swizzle_r, unsigned swizzle_g,
462 unsigned swizzle_b, unsigned swizzle_a)
463 {
464 struct fd_resource *rsc = fd_resource(prsc);
465 unsigned char swiz[4];
466
467 fd6_tex_swiz(format, swiz,
468 swizzle_r, swizzle_g,
469 swizzle_b, swizzle_a);
470
471 return
472 A6XX_TEX_CONST_0_FMT(fd6_pipe2tex(format)) |
473 A6XX_TEX_CONST_0_SAMPLES(fd_msaa_samples(prsc->nr_samples)) |
474 A6XX_TEX_CONST_0_SWAP(fd6_resource_swap(rsc, format)) |
475 A6XX_TEX_CONST_0_TILE_MODE(fd_resource_tile_mode(prsc, level)) |
476 COND(util_format_is_srgb(format), A6XX_TEX_CONST_0_SRGB) |
477 A6XX_TEX_CONST_0_SWIZ_X(fd6_pipe2swiz(swiz[0])) |
478 A6XX_TEX_CONST_0_SWIZ_Y(fd6_pipe2swiz(swiz[1])) |
479 A6XX_TEX_CONST_0_SWIZ_Z(fd6_pipe2swiz(swiz[2])) |
480 A6XX_TEX_CONST_0_SWIZ_W(fd6_pipe2swiz(swiz[3]));
481 }