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676084bb63fee2c2f4de29d2e1c6b1b238e1995d
[mesa.git] / src / gallium / drivers / freedreno / a3xx / fd3_format.c
1 /*
2 * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 */
24
25 #include "pipe/p_defines.h"
26 #include "util/u_format.h"
27
28 #include "fd3_format.h"
29
30 /* Specifies the table of all the formats and their features. Also supplies
31 * the helpers that look up various data in those tables.
32 */
33
34 struct fd3_format {
35 enum a3xx_vtx_fmt vtx;
36 enum a3xx_tex_fmt tex;
37 enum a3xx_color_fmt rb;
38 enum a3xx_color_swap swap;
39 boolean present;
40 };
41
42 #define RB_NONE ~0
43
44 /* vertex + texture */
45 #define VT(pipe, fmt, rbfmt, swapfmt) \
46 [PIPE_FORMAT_ ## pipe] = { \
47 .present = 1, \
48 .vtx = VFMT_ ## fmt, \
49 .tex = TFMT_ ## fmt, \
50 .rb = RB_ ## rbfmt, \
51 .swap = swapfmt \
52 }
53
54 /* texture-only */
55 #define _T(pipe, fmt, rbfmt, swapfmt) \
56 [PIPE_FORMAT_ ## pipe] = { \
57 .present = 1, \
58 .vtx = ~0, \
59 .tex = TFMT_ ## fmt, \
60 .rb = RB_ ## rbfmt, \
61 .swap = swapfmt \
62 }
63
64 /* vertex-only */
65 #define V_(pipe, fmt, rbfmt, swapfmt) \
66 [PIPE_FORMAT_ ## pipe] = { \
67 .present = 1, \
68 .vtx = VFMT_ ## fmt, \
69 .tex = ~0, \
70 .rb = RB_ ## rbfmt, \
71 .swap = swapfmt \
72 }
73
74 static struct fd3_format formats[PIPE_FORMAT_COUNT] = {
75 /* 8-bit */
76 VT(R8_UNORM, 8_UNORM, R8_UNORM, WZYX),
77 VT(R8_SNORM, 8_SNORM, NONE, WZYX),
78 VT(R8_UINT, 8_UINT, R8_UINT, WZYX),
79 VT(R8_SINT, 8_SINT, R8_SINT, WZYX),
80 V_(R8_USCALED, 8_UINT, NONE, WZYX),
81 V_(R8_SSCALED, 8_UINT, NONE, WZYX),
82
83 _T(A8_UNORM, 8_UNORM, A8_UNORM, WZYX),
84 _T(L8_UNORM, 8_UNORM, R8_UNORM, WZYX),
85 _T(I8_UNORM, 8_UNORM, NONE, WZYX),
86
87 /* 16-bit */
88 V_(R16_UNORM, 16_UNORM, NONE, WZYX),
89 V_(R16_SNORM, 16_SNORM, NONE, WZYX),
90 VT(R16_UINT, 16_UINT, R16_UINT, WZYX),
91 VT(R16_SINT, 16_SINT, R16_SINT, WZYX),
92 V_(R16_USCALED, 16_UINT, NONE, WZYX),
93 V_(R16_SSCALED, 16_UINT, NONE, WZYX),
94 VT(R16_FLOAT, 16_FLOAT, NONE, WZYX),
95
96 VT(R8G8_UNORM, 8_8_UNORM, R8G8_UNORM, WZYX),
97 VT(R8G8_SNORM, 8_8_SNORM, R8G8_SNORM, WZYX),
98 VT(R8G8_UINT, 8_8_UINT, NONE, WZYX),
99 VT(R8G8_SINT, 8_8_SINT, NONE, WZYX),
100 V_(R8G8_USCALED, 8_8_UINT, NONE, WZYX),
101 V_(R8G8_SSCALED, 8_8_SINT, NONE, WZYX),
102
103 _T(Z16_UNORM, Z16_UNORM, R8G8_UNORM, WZYX),
104 /*_T(B5G6R5_UNORM, 5_6_5_UNORM, R5G6B5_UNORM, WXYZ),*/
105 _T(B5G5R5A1_UNORM, 5_5_5_1_UNORM, R5G5B5A1_UNORM, WXYZ),
106 _T(B5G5R5X1_UNORM, 5_5_5_1_UNORM, R5G5B5A1_UNORM, WXYZ),
107 _T(B4G4R4A4_UNORM, 4_4_4_4_UNORM, R4G4B4A4_UNORM, WXYZ),
108
109 /* 24-bit */
110 V_(R8G8B8_UNORM, 8_8_8_UNORM, NONE, WZYX),
111 V_(R8G8B8_SNORM, 8_8_8_SNORM, NONE, WZYX),
112 V_(R8G8B8_UINT, 8_8_8_UINT, NONE, WZYX),
113 V_(R8G8B8_SINT, 8_8_8_SINT, NONE, WZYX),
114 V_(R8G8B8_USCALED, 8_8_8_UINT, NONE, WZYX),
115 V_(R8G8B8_SSCALED, 8_8_8_SINT, NONE, WZYX),
116
117 /* 32-bit */
118 VT(R32_UINT, 32_UINT, R32_UINT, WZYX),
119 VT(R32_SINT, 32_SINT, R32_SINT, WZYX),
120 V_(R32_USCALED, 32_UINT, NONE, WZYX),
121 V_(R32_SSCALED, 32_UINT, NONE, WZYX),
122 VT(R32_FLOAT, 32_FLOAT, NONE, WZYX),
123 V_(R32_FIXED, 32_FIXED, NONE, WZYX),
124
125 V_(R16G16_UNORM, 16_16_UNORM, NONE, WZYX),
126 V_(R16G16_SNORM, 16_16_SNORM, NONE, WZYX),
127 VT(R16G16_UINT, 16_16_UINT, R16G16_UINT, WZYX),
128 VT(R16G16_SINT, 16_16_SINT, R16G16_SINT, WZYX),
129 V_(R16G16_USCALED, 16_16_UINT, NONE, WZYX),
130 V_(R16G16_SSCALED, 16_16_SINT, NONE, WZYX),
131 VT(R16G16_FLOAT, 16_16_FLOAT, NONE, WZYX),
132
133 VT(R8G8B8A8_UNORM, 8_8_8_8_UNORM, R8G8B8A8_UNORM, WZYX),
134 _T(R8G8B8X8_UNORM, 8_8_8_8_UNORM, R8G8B8A8_UNORM, WZYX),
135 _T(R8G8B8A8_SRGB, 8_8_8_8_UNORM, NONE, WZYX),
136 _T(R8G8B8X8_SRGB, 8_8_8_8_UNORM, NONE, WZYX),
137 VT(R8G8B8A8_SNORM, 8_8_8_8_SNORM, R8G8B8A8_SNORM, WZYX),
138 VT(R8G8B8A8_UINT, 8_8_8_8_UINT, R8G8B8A8_UINT, WZYX),
139 VT(R8G8B8A8_SINT, 8_8_8_8_SINT, R8G8B8A8_SINT, WZYX),
140 V_(R8G8B8A8_USCALED, 8_8_8_8_UINT, NONE, WZYX),
141 V_(R8G8B8A8_SSCALED, 8_8_8_8_SINT, NONE, WZYX),
142
143 VT(B8G8R8A8_UNORM, 8_8_8_8_UNORM, R8G8B8A8_UNORM, WXYZ),
144 _T(B8G8R8X8_UNORM, 8_8_8_8_UNORM, R8G8B8A8_UNORM, WXYZ),
145 VT(B8G8R8A8_SRGB, 8_8_8_8_UNORM, NONE, WXYZ),
146 _T(B8G8R8X8_SRGB, 8_8_8_8_UNORM, NONE, WXYZ),
147
148 VT(A8B8G8R8_UNORM, 8_8_8_8_UNORM, R8G8B8A8_UNORM, XYZW),
149 _T(X8B8G8R8_UNORM, 8_8_8_8_UNORM, R8G8B8A8_UNORM, XYZW),
150 _T(A8B8G8R8_SRGB, 8_8_8_8_UNORM, NONE, XYZW),
151 _T(X8B8G8R8_SRGB, 8_8_8_8_UNORM, NONE, XYZW),
152
153 VT(A8R8G8B8_UNORM, 8_8_8_8_UNORM, R8G8B8A8_UNORM, ZYXW),
154 _T(X8R8G8B8_UNORM, 8_8_8_8_UNORM, R8G8B8A8_UNORM, ZYXW),
155 _T(A8R8G8B8_SRGB, 8_8_8_8_UNORM, NONE, ZYXW),
156 _T(X8R8G8B8_SRGB, 8_8_8_8_UNORM, NONE, ZYXW),
157
158 V_(R10G10B10A2_UNORM, 10_10_10_2_UNORM, NONE/*R10G10B10A2_UNORM*/, WZYX),
159 V_(R10G10B10A2_SNORM, 10_10_10_2_SNORM, NONE, WZYX),
160 V_(R10G10B10A2_UINT, 10_10_10_2_UINT, NONE, WZYX),
161 V_(R10G10B10A2_USCALED, 10_10_10_2_UINT, NONE, WZYX),
162 V_(R10G10B10A2_SSCALED, 10_10_10_2_SINT, NONE, WZYX),
163
164 _T(R11G11B10_FLOAT, 11_11_10_FLOAT, R11G11B10_FLOAT, WZYX),
165 _T(R9G9B9E5_FLOAT, 9_9_9_E5_FLOAT, NONE, WZYX),
166
167 _T(Z24X8_UNORM, X8Z24_UNORM, R8G8B8A8_UNORM, WZYX),
168 _T(Z24_UNORM_S8_UINT, X8Z24_UNORM, R8G8B8A8_UNORM, WZYX),
169 /*_T(Z32_FLOAT, Z32_FLOAT, R8G8B8A8_UNORM, WZYX),*/
170
171 /* 48-bit */
172 V_(R16G16B16_UNORM, 16_16_16_UNORM, NONE, WZYX),
173 V_(R16G16B16_SNORM, 16_16_16_SNORM, NONE, WZYX),
174 V_(R16G16B16_UINT, 16_16_16_UINT, NONE, WZYX),
175 V_(R16G16B16_SINT, 16_16_16_SINT, NONE, WZYX),
176 V_(R16G16B16_USCALED, 16_16_16_UINT, NONE, WZYX),
177 V_(R16G16B16_SSCALED, 16_16_16_SINT, NONE, WZYX),
178 V_(R16G16B16_FLOAT, 16_16_16_FLOAT, NONE, WZYX),
179
180 /* 64-bit */
181 V_(R16G16B16A16_UNORM, 16_16_16_16_UNORM, NONE, WZYX),
182 V_(R16G16B16A16_SNORM, 16_16_16_16_SNORM, NONE, WZYX),
183 VT(R16G16B16A16_UINT, 16_16_16_16_UINT, R16G16B16A16_UINT, WZYX),
184 _T(R16G16B16X16_UINT, 16_16_16_16_UINT, R16G16B16A16_UINT, WZYX),
185 VT(R16G16B16A16_SINT, 16_16_16_16_SINT, R16G16B16A16_SINT, WZYX),
186 _T(R16G16B16X16_SINT, 16_16_16_16_SINT, R16G16B16A16_SINT, WZYX),
187 V_(R16G16B16A16_USCALED, 16_16_16_16_UINT, NONE, WZYX),
188 V_(R16G16B16A16_SSCALED, 16_16_16_16_SINT, NONE, WZYX),
189 VT(R16G16B16A16_FLOAT, 16_16_16_16_FLOAT, R16G16B16A16_FLOAT, WZYX),
190 _T(R16G16B16X16_FLOAT, 16_16_16_16_FLOAT, R16G16B16A16_FLOAT, WZYX),
191
192 VT(R32G32_UINT, 32_32_UINT, R32G32_UINT, WZYX),
193 VT(R32G32_SINT, 32_32_SINT, R32G32_SINT, WZYX),
194 V_(R32G32_USCALED, 32_32_UINT, NONE, WZYX),
195 V_(R32G32_SSCALED, 32_32_SINT, NONE, WZYX),
196 VT(R32G32_FLOAT, 32_32_FLOAT, NONE, WZYX),
197 V_(R32G32_FIXED, 32_32_FIXED, NONE, WZYX),
198
199 /* 96-bit */
200 V_(R32G32B32_UINT, 32_32_32_UINT, NONE, WZYX),
201 V_(R32G32B32_SINT, 32_32_32_SINT, NONE, WZYX),
202 V_(R32G32B32_USCALED, 32_32_32_UINT, NONE, WZYX),
203 V_(R32G32B32_SSCALED, 32_32_32_SINT, NONE, WZYX),
204 V_(R32G32B32_FLOAT, 32_32_32_FLOAT, NONE, WZYX),
205 V_(R32G32B32_FIXED, 32_32_32_FIXED, NONE, WZYX),
206
207 /* 128-bit */
208 VT(R32G32B32A32_UINT, 32_32_32_32_UINT, R32G32B32A32_UINT, WZYX),
209 _T(R32G32B32X32_UINT, 32_32_32_32_UINT, R32G32B32A32_UINT, WZYX),
210 VT(R32G32B32A32_SINT, 32_32_32_32_SINT, R32G32B32A32_SINT, WZYX),
211 _T(R32G32B32X32_SINT, 32_32_32_32_SINT, R32G32B32A32_SINT, WZYX),
212 V_(R32G32B32A32_USCALED, 32_32_32_32_UINT, NONE, WZYX),
213 V_(R32G32B32A32_SSCALED, 32_32_32_32_SINT, NONE, WZYX),
214 VT(R32G32B32A32_FLOAT, 32_32_32_32_FLOAT, R32G32B32A32_FLOAT, WZYX),
215 _T(R32G32B32X32_FLOAT, 32_32_32_32_FLOAT, R32G32B32A32_FLOAT, WZYX),
216 V_(R32G32B32A32_FIXED, 32_32_32_32_FIXED, NONE, WZYX),
217 };
218
219 enum a3xx_vtx_fmt
220 fd3_pipe2vtx(enum pipe_format format)
221 {
222 if (!formats[format].present)
223 return ~0;
224 return formats[format].vtx;
225 }
226
227 enum a3xx_tex_fmt
228 fd3_pipe2tex(enum pipe_format format)
229 {
230 if (!formats[format].present)
231 return ~0;
232 return formats[format].tex;
233 }
234
235 enum a3xx_color_fmt
236 fd3_pipe2color(enum pipe_format format)
237 {
238 if (!formats[format].present)
239 return ~0;
240 /* Integer formats don't render properly yet */
241 if (util_format_is_pure_integer(format))
242 return ~0;
243 return formats[format].rb;
244 }
245
246 enum a3xx_color_swap
247 fd3_pipe2swap(enum pipe_format format)
248 {
249 if (!formats[format].present)
250 return WZYX;
251 return formats[format].swap;
252 }
253
254 enum a3xx_tex_fetchsize
255 fd3_pipe2fetchsize(enum pipe_format format)
256 {
257 switch (util_format_get_blocksizebits(format)) {
258 case 8: return TFETCH_1_BYTE;
259 case 16: return TFETCH_2_BYTE;
260 case 32: return TFETCH_4_BYTE;
261 case 64: return TFETCH_8_BYTE;
262 case 128: return TFETCH_16_BYTE;
263 default:
264 debug_printf("Unknown block size for format %s: %d\n",
265 util_format_name(format),
266 util_format_get_blocksizebits(format));
267 return TFETCH_DISABLE;
268 }
269 }
270
271 /* we need to special case a bit the depth/stencil restore, because we are
272 * using the texture sampler to blit into the depth/stencil buffer, *not*
273 * into a color buffer. Otherwise fd3_tex_swiz() will do the wrong thing,
274 * as it is assuming that you are sampling into normal render target..
275 */
276 enum pipe_format
277 fd3_gmem_restore_format(enum pipe_format format)
278 {
279 switch (format) {
280 case PIPE_FORMAT_Z24X8_UNORM:
281 case PIPE_FORMAT_Z24_UNORM_S8_UINT:
282 return PIPE_FORMAT_R8G8B8A8_UNORM;
283 case PIPE_FORMAT_Z16_UNORM:
284 return PIPE_FORMAT_R8G8_UNORM;
285 default:
286 return format;
287 }
288 }
289
290 static inline enum a3xx_tex_swiz
291 tex_swiz(unsigned swiz)
292 {
293 switch (swiz) {
294 default:
295 case PIPE_SWIZZLE_RED: return A3XX_TEX_X;
296 case PIPE_SWIZZLE_GREEN: return A3XX_TEX_Y;
297 case PIPE_SWIZZLE_BLUE: return A3XX_TEX_Z;
298 case PIPE_SWIZZLE_ALPHA: return A3XX_TEX_W;
299 case PIPE_SWIZZLE_ZERO: return A3XX_TEX_ZERO;
300 case PIPE_SWIZZLE_ONE: return A3XX_TEX_ONE;
301 }
302 }
303
304 uint32_t
305 fd3_tex_swiz(enum pipe_format format, unsigned swizzle_r, unsigned swizzle_g,
306 unsigned swizzle_b, unsigned swizzle_a)
307 {
308 const struct util_format_description *desc =
309 util_format_description(format);
310 unsigned char swiz[4] = {
311 swizzle_r, swizzle_g, swizzle_b, swizzle_a,
312 }, rswiz[4];
313
314 util_format_compose_swizzles(desc->swizzle, swiz, rswiz);
315
316 return A3XX_TEX_CONST_0_SWIZ_X(tex_swiz(rswiz[0])) |
317 A3XX_TEX_CONST_0_SWIZ_Y(tex_swiz(rswiz[1])) |
318 A3XX_TEX_CONST_0_SWIZ_Z(tex_swiz(rswiz[2])) |
319 A3XX_TEX_CONST_0_SWIZ_W(tex_swiz(rswiz[3]));
320 }