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util: add anon_file.h for all memfd/temp file usage
[mesa.git] / src / intel / isl / isl_format.c
1 /*
2 * Copyright 2015 Intel Corporation
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
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24 #include <assert.h>
25
26 #include "isl.h"
27 #include "isl_priv.h"
28 #include "dev/gen_device_info.h"
29
30 #include "main/macros.h" /* Needed for MAX3 and MAX2 for format_rgb9e5 */
31 #include "util/format_srgb.h"
32 #include "util/format_rgb9e5.h"
33 #include "util/format_r11g11b10f.h"
34
35 /* Header-only format conversion include */
36 #include "main/format_utils.h"
37
38 struct surface_format_info {
39 bool exists;
40 uint8_t sampling;
41 uint8_t filtering;
42 uint8_t shadow_compare;
43 uint8_t chroma_key;
44 uint8_t render_target;
45 uint8_t alpha_blend;
46 uint8_t input_vb;
47 uint8_t streamed_output_vb;
48 uint8_t color_processing;
49 uint8_t typed_write;
50 uint8_t typed_read;
51 uint8_t ccs_e;
52 };
53
54 /* This macro allows us to write the table almost as it appears in the PRM,
55 * while restructuring it to turn it into the C code we want.
56 */
57 #define SF(sampl, filt, shad, ck, rt, ab, vb, so, color, tw, tr, ccs_e, sf) \
58 [ISL_FORMAT_##sf] = { true, sampl, filt, shad, ck, rt, ab, vb, so, color, tw, tr, ccs_e},
59
60 #define Y 0
61 #define x 255
62 /**
63 * This is the table of support for surface (texture, renderbuffer, and vertex
64 * buffer, but not depthbuffer) formats across the various hardware generations.
65 *
66 * The table is formatted to match the documentation, except that the docs have
67 * this ridiculous mapping of Y[*+~^#&] for "supported on DevWhatever". To put
68 * it in our table, here's the mapping:
69 *
70 * Y*: 45
71 * Y+: 45 (g45/gm45)
72 * Y~: 50 (gen5)
73 * Y^: 60 (gen6)
74 * Y#: 70 (gen7)
75 *
76 * The abbreviations in the header below are:
77 * smpl - Sampling Engine
78 * filt - Sampling Engine Filtering
79 * shad - Sampling Engine Shadow Map
80 * CK - Sampling Engine Chroma Key
81 * RT - Render Target
82 * AB - Alpha Blend Render Target
83 * VB - Input Vertex Buffer
84 * SO - Steamed Output Vertex Buffers (transform feedback)
85 * color - Color Processing
86 * ccs_e - Lossless Compression Support (gen9+ only)
87 * sf - Surface Format
88 *
89 * See page 88 of the Sandybridge PRM VOL4_Part1 PDF.
90 *
91 * As of Ivybridge, the columns are no longer in that table and the
92 * information can be found spread across:
93 *
94 * - VOL2_Part1 section 2.5.11 Format Conversion (vertex fetch).
95 * - VOL4_Part1 section 2.12.2.1.2 Sampler Output Channel Mapping.
96 * - VOL4_Part1 section 3.9.11 Render Target Write.
97 * - Render Target Surface Types [SKL+]
98 */
99 static const struct surface_format_info format_info[] = {
100 /* smpl filt shad CK RT AB VB SO color TW TR ccs_e */
101 SF( Y, 50, x, x, Y, Y, Y, Y, x, 70, 90, 90, R32G32B32A32_FLOAT)
102 SF( Y, x, x, x, Y, x, Y, Y, x, 70, 90, 90, R32G32B32A32_SINT)
103 SF( Y, x, x, x, Y, x, Y, Y, x, 70, 90, 90, R32G32B32A32_UINT)
104 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32B32A32_UNORM)
105 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32B32A32_SNORM)
106 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R64G64_FLOAT)
107 SF( Y, 50, x, x, 100, 100, x, x, x, x, x, 100, R32G32B32X32_FLOAT)
108 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32B32A32_SSCALED)
109 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32B32A32_USCALED)
110 SF( x, x, x, x, x, x, 75, x, x, x, x, x, R32G32B32A32_SFIXED)
111 SF( x, x, x, x, x, x, 80, x, x, x, x, x, R64G64_PASSTHRU)
112 SF( Y, 50, x, x, x, x, Y, Y, x, x, x, x, R32G32B32_FLOAT)
113 SF( Y, x, x, x, x, x, Y, Y, x, x, x, x, R32G32B32_SINT)
114 SF( Y, x, x, x, x, x, Y, Y, x, x, x, x, R32G32B32_UINT)
115 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32B32_UNORM)
116 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32B32_SNORM)
117 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32B32_SSCALED)
118 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32B32_USCALED)
119 SF( x, x, x, x, x, x, 75, x, x, x, x, x, R32G32B32_SFIXED)
120 SF( Y, Y, x, x, Y, 45, Y, x, 60, 70, 110, 90, R16G16B16A16_UNORM)
121 SF( Y, Y, x, x, Y, 60, Y, x, x, 70, 110, 90, R16G16B16A16_SNORM)
122 SF( Y, x, x, x, Y, x, Y, x, x, 70, 90, 90, R16G16B16A16_SINT)
123 SF( Y, x, x, x, Y, x, Y, x, x, 70, 75, 90, R16G16B16A16_UINT)
124 SF( Y, Y, x, x, Y, Y, Y, x, x, 70, 90, 90, R16G16B16A16_FLOAT)
125 SF( Y, 50, x, x, Y, Y, Y, Y, x, 70, 90, 90, R32G32_FLOAT)
126 SF( Y, 70, x, x, Y, Y, Y, Y, x, x, x, x, R32G32_FLOAT_LD)
127 SF( Y, x, x, x, Y, x, Y, Y, x, 70, 90, 90, R32G32_SINT)
128 SF( Y, x, x, x, Y, x, Y, Y, x, 70, 90, 90, R32G32_UINT)
129 SF( Y, 50, Y, x, x, x, x, x, x, x, x, x, R32_FLOAT_X8X24_TYPELESS)
130 SF( Y, x, x, x, x, x, x, x, x, x, x, x, X32_TYPELESS_G8X24_UINT)
131 SF( Y, 50, x, x, x, x, x, x, x, x, x, x, L32A32_FLOAT)
132 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32_UNORM)
133 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32_SNORM)
134 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R64_FLOAT)
135 SF( Y, Y, x, x, x, x, x, x, x, x, x, x, R16G16B16X16_UNORM)
136 SF( Y, Y, x, x, 90, 90, x, x, x, x, x, 90, R16G16B16X16_FLOAT)
137 SF( Y, 50, x, x, x, x, x, x, x, x, x, x, A32X32_FLOAT)
138 SF( Y, 50, x, x, x, x, x, x, x, x, x, x, L32X32_FLOAT)
139 SF( Y, 50, x, x, x, x, x, x, x, x, x, x, I32X32_FLOAT)
140 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R16G16B16A16_SSCALED)
141 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R16G16B16A16_USCALED)
142 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32_SSCALED)
143 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32_USCALED)
144 SF( x, x, x, x, x, x, 75, x, x, x, x, x, R32G32_SFIXED)
145 SF( x, x, x, x, x, x, 80, x, x, x, x, x, R64_PASSTHRU)
146 SF( Y, Y, x, Y, Y, Y, Y, x, 60, 70, x, 90, B8G8R8A8_UNORM)
147 SF( Y, Y, x, x, Y, Y, x, x, x, x, x, 100, B8G8R8A8_UNORM_SRGB)
148 /* smpl filt shad CK RT AB VB SO color TW TR ccs_e */
149 SF( Y, Y, x, x, Y, Y, Y, x, 60, 70, x, 100, R10G10B10A2_UNORM)
150 SF( Y, Y, x, x, x, x, x, x, 60, x, x, x, R10G10B10A2_UNORM_SRGB)
151 SF( Y, x, x, x, Y, x, Y, x, x, 70, x, 100, R10G10B10A2_UINT)
152 SF( Y, Y, x, x, x, x, Y, x, x, x, x, x, R10G10B10_SNORM_A2_UNORM)
153 SF( Y, Y, x, x, Y, Y, Y, x, 60, 70, 110, 90, R8G8B8A8_UNORM)
154 SF( Y, Y, x, x, Y, Y, x, x, 60, x, x, 100, R8G8B8A8_UNORM_SRGB)
155 SF( Y, Y, x, x, Y, 60, Y, x, x, 70, 110, 90, R8G8B8A8_SNORM)
156 SF( Y, x, x, x, Y, x, Y, x, x, 70, 90, 90, R8G8B8A8_SINT)
157 SF( Y, x, x, x, Y, x, Y, x, x, 70, 75, 90, R8G8B8A8_UINT)
158 SF( Y, Y, x, x, Y, 45, Y, x, x, 70, 110, 90, R16G16_UNORM)
159 SF( Y, Y, x, x, Y, 60, Y, x, x, 70, 110, 90, R16G16_SNORM)
160 SF( Y, x, x, x, Y, x, Y, x, x, 70, 90, 90, R16G16_SINT)
161 SF( Y, x, x, x, Y, x, Y, x, x, 70, 75, 90, R16G16_UINT)
162 SF( Y, Y, x, x, Y, Y, Y, x, x, 70, 90, 90, R16G16_FLOAT)
163 SF( Y, Y, x, x, Y, Y, 75, x, 60, 70, x, 100, B10G10R10A2_UNORM)
164 SF( Y, Y, x, x, Y, Y, x, x, 60, x, x, 100, B10G10R10A2_UNORM_SRGB)
165 SF( Y, Y, x, x, Y, Y, Y, x, x, 70, x, 100, R11G11B10_FLOAT)
166 SF( Y, x, x, x, Y, x, Y, Y, x, 70, 70, 90, R32_SINT)
167 SF( Y, x, x, x, Y, x, Y, Y, x, 70, 70, 90, R32_UINT)
168 SF( Y, 50, Y, x, Y, Y, Y, Y, x, 70, 70, 90, R32_FLOAT)
169 SF( Y, 50, Y, x, x, x, x, x, x, x, x, x, R24_UNORM_X8_TYPELESS)
170 SF( Y, x, x, x, x, x, x, x, x, x, x, x, X24_TYPELESS_G8_UINT)
171 SF( Y, Y, x, x, x, x, x, x, x, x, x, x, L16A16_UNORM)
172 SF( Y, 50, Y, x, x, x, x, x, x, x, x, x, I24X8_UNORM)
173 SF( Y, 50, Y, x, x, x, x, x, x, x, x, x, L24X8_UNORM)
174 SF( Y, 50, Y, x, x, x, x, x, x, x, x, x, A24X8_UNORM)
175 SF( Y, 50, Y, x, x, x, x, x, x, x, x, x, I32_FLOAT)
176 SF( Y, 50, Y, x, x, x, x, x, x, x, x, x, L32_FLOAT)
177 SF( Y, 50, Y, x, x, x, x, x, x, x, x, x, A32_FLOAT)
178 SF( Y, Y, x, Y, 80, 80, x, x, 60, x, x, 90, B8G8R8X8_UNORM)
179 SF( Y, Y, x, x, 80, 80, x, x, x, x, x, 100, B8G8R8X8_UNORM_SRGB)
180 SF( Y, Y, x, x, x, x, x, x, x, x, x, x, R8G8B8X8_UNORM)
181 SF( Y, Y, x, x, x, x, x, x, x, x, x, x, R8G8B8X8_UNORM_SRGB)
182 SF( Y, Y, x, x, x, x, x, x, x, x, x, x, R9G9B9E5_SHAREDEXP)
183 SF( Y, Y, x, x, x, x, x, x, x, x, x, x, B10G10R10X2_UNORM)
184 SF( Y, Y, x, x, x, x, x, x, x, x, x, x, L16A16_FLOAT)
185 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32_UNORM)
186 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32_SNORM)
187 /* smpl filt shad CK RT AB VB SO color TW TR ccs_e */
188 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R10G10B10X2_USCALED)
189 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R8G8B8A8_SSCALED)
190 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R8G8B8A8_USCALED)
191 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R16G16_SSCALED)
192 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R16G16_USCALED)
193 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32_SSCALED)
194 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32_USCALED)
195 SF( Y, Y, x, Y, Y, Y, x, x, x, 70, x, x, B5G6R5_UNORM)
196 SF( Y, Y, x, x, Y, Y, x, x, x, x, x, x, B5G6R5_UNORM_SRGB)
197 SF( Y, Y, x, Y, Y, Y, x, x, x, 70, x, x, B5G5R5A1_UNORM)
198 SF( Y, Y, x, x, Y, Y, x, x, x, x, x, x, B5G5R5A1_UNORM_SRGB)
199 SF( Y, Y, x, Y, Y, Y, x, x, x, 70, x, x, B4G4R4A4_UNORM)
200 SF( Y, Y, x, x, Y, Y, x, x, x, x, x, x, B4G4R4A4_UNORM_SRGB)
201 SF( Y, Y, x, x, Y, Y, Y, x, x, 70, 110, x, R8G8_UNORM)
202 SF( Y, Y, x, Y, Y, 60, Y, x, x, 70, 110, x, R8G8_SNORM)
203 SF( Y, x, x, x, Y, x, Y, x, x, 70, 90, x, R8G8_SINT)
204 SF( Y, x, x, x, Y, x, Y, x, x, 70, 75, x, R8G8_UINT)
205 SF( Y, Y, Y, x, Y, 45, Y, x, 70, 70, 110, x, R16_UNORM)
206 SF( Y, Y, x, x, Y, 60, Y, x, x, 70, 110, x, R16_SNORM)
207 SF( Y, x, x, x, Y, x, Y, x, x, 70, 90, x, R16_SINT)
208 SF( Y, x, x, x, Y, x, Y, x, x, 70, 75, x, R16_UINT)
209 SF( Y, Y, x, x, Y, Y, Y, x, x, 70, 90, x, R16_FLOAT)
210 SF( 50, 50, x, x, x, x, x, x, x, x, x, x, A8P8_UNORM_PALETTE0)
211 SF( 50, 50, x, x, x, x, x, x, x, x, x, x, A8P8_UNORM_PALETTE1)
212 SF( Y, Y, Y, x, x, x, x, x, x, x, x, x, I16_UNORM)
213 SF( Y, Y, Y, x, x, x, x, x, x, x, x, x, L16_UNORM)
214 SF( Y, Y, Y, x, x, x, x, x, x, x, x, x, A16_UNORM)
215 SF( Y, Y, x, Y, x, x, x, x, x, x, x, x, L8A8_UNORM)
216 SF( Y, Y, Y, x, x, x, x, x, x, x, x, x, I16_FLOAT)
217 SF( Y, Y, Y, x, x, x, x, x, x, x, x, x, L16_FLOAT)
218 SF( Y, Y, Y, x, x, x, x, x, x, x, x, x, A16_FLOAT)
219 SF( 45, 45, x, x, x, x, x, x, x, x, x, x, L8A8_UNORM_SRGB)
220 SF( Y, Y, x, Y, x, x, x, x, x, x, x, x, R5G5_SNORM_B6_UNORM)
221 SF( x, x, x, x, Y, Y, x, x, x, 70, x, x, B5G5R5X1_UNORM)
222 SF( x, x, x, x, Y, Y, x, x, x, x, x, x, B5G5R5X1_UNORM_SRGB)
223 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R8G8_SSCALED)
224 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R8G8_USCALED)
225 /* smpl filt shad CK RT AB VB SO color TW TR ccs_e */
226 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R16_SSCALED)
227 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R16_USCALED)
228 SF( 50, 50, x, x, x, x, x, x, x, x, x, x, P8A8_UNORM_PALETTE0)
229 SF( 50, 50, x, x, x, x, x, x, x, x, x, x, P8A8_UNORM_PALETTE1)
230 SF( x, x, x, x, x, x, x, x, x, x, x, x, A1B5G5R5_UNORM)
231 /* According to the PRM, A4B4G4R4_UNORM isn't supported until Sky Lake
232 * but empirical testing indicates that at least sampling works just fine
233 * on Broadwell.
234 */
235 SF( 80, 80, x, x, 90, x, x, x, x, x, x, x, A4B4G4R4_UNORM)
236 SF( 90, x, x, x, x, x, x, x, x, x, x, x, L8A8_UINT)
237 SF( 90, x, x, x, x, x, x, x, x, x, x, x, L8A8_SINT)
238 SF( Y, Y, x, 45, Y, Y, Y, x, x, 70, 110, x, R8_UNORM)
239 SF( Y, Y, x, x, Y, 60, Y, x, x, 70, 110, x, R8_SNORM)
240 SF( Y, x, x, x, Y, x, Y, x, x, 70, 90, x, R8_SINT)
241 SF( Y, x, x, x, Y, x, Y, x, x, 70, 75, x, R8_UINT)
242 SF( Y, Y, x, Y, Y, Y, x, x, x, 70, 110, x, A8_UNORM)
243 SF( Y, Y, x, x, x, x, x, x, x, x, x, x, I8_UNORM)
244 SF( Y, Y, x, Y, x, x, x, x, x, x, x, x, L8_UNORM)
245 SF( Y, Y, x, x, x, x, x, x, x, x, x, x, P4A4_UNORM_PALETTE0)
246 SF( Y, Y, x, x, x, x, x, x, x, x, x, x, A4P4_UNORM_PALETTE0)
247 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R8_SSCALED)
248 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R8_USCALED)
249 SF( 45, 45, x, x, x, x, x, x, x, x, x, x, P8_UNORM_PALETTE0)
250 SF( 45, 45, x, x, x, x, x, x, x, x, x, x, L8_UNORM_SRGB)
251 SF( 45, 45, x, x, x, x, x, x, x, x, x, x, P8_UNORM_PALETTE1)
252 SF( 45, 45, x, x, x, x, x, x, x, x, x, x, P4A4_UNORM_PALETTE1)
253 SF( 45, 45, x, x, x, x, x, x, x, x, x, x, A4P4_UNORM_PALETTE1)
254 SF( x, x, x, x, x, x, x, x, x, x, x, x, Y8_UNORM)
255 SF( 90, x, x, x, x, x, x, x, x, x, x, x, L8_UINT)
256 SF( 90, x, x, x, x, x, x, x, x, x, x, x, L8_SINT)
257 SF( 90, x, x, x, x, x, x, x, x, x, x, x, I8_UINT)
258 SF( 90, x, x, x, x, x, x, x, x, x, x, x, I8_SINT)
259 SF( 45, 45, x, x, x, x, x, x, x, x, x, x, DXT1_RGB_SRGB)
260 SF( Y, Y, x, x, x, x, x, x, x, x, x, x, R1_UNORM)
261 SF( Y, Y, x, Y, Y, x, x, x, 60, x, x, x, YCRCB_NORMAL)
262 SF( Y, Y, x, Y, Y, x, x, x, 60, x, x, x, YCRCB_SWAPUVY)
263 SF( 45, 45, x, x, x, x, x, x, x, x, x, x, P2_UNORM_PALETTE0)
264 SF( 45, 45, x, x, x, x, x, x, x, x, x, x, P2_UNORM_PALETTE1)
265 SF( Y, Y, x, Y, x, x, x, x, x, x, x, x, BC1_UNORM)
266 SF( Y, Y, x, Y, x, x, x, x, x, x, x, x, BC2_UNORM)
267 SF( Y, Y, x, Y, x, x, x, x, x, x, x, x, BC3_UNORM)
268 SF( Y, Y, x, x, x, x, x, x, x, x, x, x, BC4_UNORM)
269 SF( Y, Y, x, x, x, x, x, x, x, x, x, x, BC5_UNORM)
270 SF( Y, Y, x, x, x, x, x, x, x, x, x, x, BC1_UNORM_SRGB)
271 SF( Y, Y, x, x, x, x, x, x, x, x, x, x, BC2_UNORM_SRGB)
272 SF( Y, Y, x, x, x, x, x, x, x, x, x, x, BC3_UNORM_SRGB)
273 SF( Y, x, x, x, x, x, x, x, x, x, x, x, MONO8)
274 SF( Y, Y, x, x, Y, x, x, x, 60, x, x, x, YCRCB_SWAPUV)
275 SF( Y, Y, x, x, Y, x, x, x, 60, x, x, x, YCRCB_SWAPY)
276 SF( Y, Y, x, x, x, x, x, x, x, x, x, x, DXT1_RGB)
277 /* smpl filt shad CK RT AB VB SO color TW TR ccs_e */
278 SF( Y, Y, x, x, x, x, x, x, x, x, x, x, FXT1)
279 SF( 75, 75, x, x, x, x, Y, x, x, x, x, x, R8G8B8_UNORM)
280 SF( 75, 75, x, x, x, x, Y, x, x, x, x, x, R8G8B8_SNORM)
281 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R8G8B8_SSCALED)
282 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R8G8B8_USCALED)
283 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R64G64B64A64_FLOAT)
284 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R64G64B64_FLOAT)
285 SF( Y, Y, x, x, x, x, x, x, x, x, x, x, BC4_SNORM)
286 SF( Y, Y, x, x, x, x, x, x, x, x, x, x, BC5_SNORM)
287 SF( 50, 50, x, x, x, x, 60, x, x, x, x, x, R16G16B16_FLOAT)
288 SF( 75, 75, x, x, x, x, Y, x, x, x, x, x, R16G16B16_UNORM)
289 SF( 75, 75, x, x, x, x, Y, x, x, x, x, x, R16G16B16_SNORM)
290 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R16G16B16_SSCALED)
291 SF( x, x, x, x, x, x, Y, x, x, x, x, x, R16G16B16_USCALED)
292 SF( 70, 70, x, x, x, x, x, x, x, x, x, x, BC6H_SF16)
293 SF( 70, 70, x, x, x, x, x, x, x, x, x, x, BC7_UNORM)
294 SF( 70, 70, x, x, x, x, x, x, x, x, x, x, BC7_UNORM_SRGB)
295 SF( 70, 70, x, x, x, x, x, x, x, x, x, x, BC6H_UF16)
296 SF( x, x, x, x, x, x, x, x, x, x, x, x, PLANAR_420_8)
297 /* The format enum for R8G8B8_UNORM_SRGB first shows up in the HSW PRM but
298 * empirical testing indicates that it doesn't actually sRGB decode and
299 * acts identical to R8G8B8_UNORM. It does work on gen8+.
300 */
301 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, R8G8B8_UNORM_SRGB)
302 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC1_RGB8)
303 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC2_RGB8)
304 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, EAC_R11)
305 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, EAC_RG11)
306 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, EAC_SIGNED_R11)
307 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, EAC_SIGNED_RG11)
308 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC2_SRGB8)
309 SF( 90, x, x, x, x, x, 75, x, x, x, x, x, R16G16B16_UINT)
310 SF( 90, x, x, x, x, x, 75, x, x, x, x, x, R16G16B16_SINT)
311 SF( x, x, x, x, x, x, 75, x, x, x, x, x, R32_SFIXED)
312 SF( x, x, x, x, x, x, 75, x, x, x, x, x, R10G10B10A2_SNORM)
313 SF( x, x, x, x, x, x, 75, x, x, x, x, x, R10G10B10A2_USCALED)
314 SF( x, x, x, x, x, x, 75, x, x, x, x, x, R10G10B10A2_SSCALED)
315 SF( x, x, x, x, x, x, 75, x, x, x, x, x, R10G10B10A2_SINT)
316 SF( x, x, x, x, x, x, 75, x, x, x, x, x, B10G10R10A2_SNORM)
317 SF( x, x, x, x, x, x, 75, x, x, x, x, x, B10G10R10A2_USCALED)
318 SF( x, x, x, x, x, x, 75, x, x, x, x, x, B10G10R10A2_SSCALED)
319 SF( x, x, x, x, x, x, 75, x, x, x, x, x, B10G10R10A2_UINT)
320 SF( x, x, x, x, x, x, 75, x, x, x, x, x, B10G10R10A2_SINT)
321 SF( x, x, x, x, x, x, 80, x, x, x, x, x, R64G64B64A64_PASSTHRU)
322 SF( x, x, x, x, x, x, 80, x, x, x, x, x, R64G64B64_PASSTHRU)
323 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC2_RGB8_PTA)
324 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC2_SRGB8_PTA)
325 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC2_EAC_RGBA8)
326 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC2_EAC_SRGB8_A8)
327 SF( 90, x, x, x, x, x, 75, x, x, x, x, x, R8G8B8_UINT)
328 SF( 90, x, x, x, x, x, 75, x, x, x, x, x, R8G8B8_SINT)
329 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_4X4_FLT16)
330 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_5X4_FLT16)
331 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_5X5_FLT16)
332 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_6X5_FLT16)
333 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_6X6_FLT16)
334 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_8X5_FLT16)
335 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_8X6_FLT16)
336 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_8X8_FLT16)
337 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X5_FLT16)
338 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X6_FLT16)
339 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X8_FLT16)
340 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X10_FLT16)
341 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_12X10_FLT16)
342 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_12X12_FLT16)
343 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_4X4_U8SRGB)
344 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_5X4_U8SRGB)
345 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_5X5_U8SRGB)
346 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_6X5_U8SRGB)
347 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_6X6_U8SRGB)
348 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_8X5_U8SRGB)
349 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_8X6_U8SRGB)
350 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_8X8_U8SRGB)
351 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X5_U8SRGB)
352 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X6_U8SRGB)
353 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X8_U8SRGB)
354 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X10_U8SRGB)
355 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_12X10_U8SRGB)
356 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_12X12_U8SRGB)
357 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_4X4_FLT16)
358 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_5X4_FLT16)
359 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_5X5_FLT16)
360 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_6X5_FLT16)
361 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_6X6_FLT16)
362 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_8X5_FLT16)
363 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_8X6_FLT16)
364 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_8X8_FLT16)
365 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_10X5_FLT16)
366 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_10X6_FLT16)
367 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_10X8_FLT16)
368 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_10X10_FLT16)
369 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_12X10_FLT16)
370 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_12X12_FLT16)
371 };
372 #undef x
373 #undef Y
374
375 static unsigned
376 format_gen(const struct gen_device_info *devinfo)
377 {
378 return devinfo->gen * 10 + (devinfo->is_g4x || devinfo->is_haswell) * 5;
379 }
380
381 static bool
382 format_info_exists(enum isl_format format)
383 {
384 assert(format != ISL_FORMAT_UNSUPPORTED);
385 assert(format < ISL_NUM_FORMATS);
386 return format < ARRAY_SIZE(format_info) && format_info[format].exists;
387 }
388
389 bool
390 isl_format_supports_rendering(const struct gen_device_info *devinfo,
391 enum isl_format format)
392 {
393 if (!format_info_exists(format))
394 return false;
395
396 return format_gen(devinfo) >= format_info[format].render_target;
397 }
398
399 bool
400 isl_format_supports_alpha_blending(const struct gen_device_info *devinfo,
401 enum isl_format format)
402 {
403 if (!format_info_exists(format))
404 return false;
405
406 return format_gen(devinfo) >= format_info[format].alpha_blend;
407 }
408
409 bool
410 isl_format_supports_sampling(const struct gen_device_info *devinfo,
411 enum isl_format format)
412 {
413 if (!format_info_exists(format))
414 return false;
415
416 if (devinfo->is_baytrail) {
417 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
418 /* Support for ETC1 and ETC2 exists on Bay Trail even though big-core
419 * GPUs didn't get it until Broadwell.
420 */
421 if (fmtl->txc == ISL_TXC_ETC1 || fmtl->txc == ISL_TXC_ETC2)
422 return true;
423 } else if (devinfo->is_cherryview) {
424 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
425 /* Support for ASTC LDR exists on Cherry View even though big-core
426 * GPUs didn't get it until Skylake.
427 */
428 if (fmtl->txc == ISL_TXC_ASTC)
429 return format < ISL_FORMAT_ASTC_HDR_2D_4X4_FLT16;
430 } else if (gen_device_info_is_9lp(devinfo)) {
431 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
432 /* Support for ASTC HDR exists on Broxton even though big-core
433 * GPUs didn't get it until Cannonlake.
434 */
435 if (fmtl->txc == ISL_TXC_ASTC)
436 return true;
437 }
438
439 return format_gen(devinfo) >= format_info[format].sampling;
440 }
441
442 bool
443 isl_format_supports_filtering(const struct gen_device_info *devinfo,
444 enum isl_format format)
445 {
446 if (!format_info_exists(format))
447 return false;
448
449 if (devinfo->is_baytrail) {
450 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
451 /* Support for ETC1 and ETC2 exists on Bay Trail even though big-core
452 * GPUs didn't get it until Broadwell.
453 */
454 if (fmtl->txc == ISL_TXC_ETC1 || fmtl->txc == ISL_TXC_ETC2)
455 return true;
456 } else if (devinfo->is_cherryview) {
457 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
458 /* Support for ASTC LDR exists on Cherry View even though big-core
459 * GPUs didn't get it until Skylake.
460 */
461 if (fmtl->txc == ISL_TXC_ASTC)
462 return format < ISL_FORMAT_ASTC_HDR_2D_4X4_FLT16;
463 } else if (gen_device_info_is_9lp(devinfo)) {
464 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
465 /* Support for ASTC HDR exists on Broxton even though big-core
466 * GPUs didn't get it until Cannonlake.
467 */
468 if (fmtl->txc == ISL_TXC_ASTC)
469 return true;
470 }
471
472 return format_gen(devinfo) >= format_info[format].filtering;
473 }
474
475 bool
476 isl_format_supports_vertex_fetch(const struct gen_device_info *devinfo,
477 enum isl_format format)
478 {
479 if (!format_info_exists(format))
480 return false;
481
482 /* For vertex fetch, Bay Trail supports the same set of formats as Haswell
483 * but is a superset of Ivy Bridge.
484 */
485 if (devinfo->is_baytrail)
486 return 75 >= format_info[format].input_vb;
487
488 return format_gen(devinfo) >= format_info[format].input_vb;
489 }
490
491 /**
492 * Returns true if the given format can support typed writes.
493 */
494 bool
495 isl_format_supports_typed_writes(const struct gen_device_info *devinfo,
496 enum isl_format format)
497 {
498 if (!format_info_exists(format))
499 return false;
500
501 return format_gen(devinfo) >= format_info[format].typed_write;
502 }
503
504
505 /**
506 * Returns true if the given format can support typed reads with format
507 * conversion fully handled by hardware. On Sky Lake, all formats which are
508 * supported for typed writes also support typed reads but some of them return
509 * the raw image data and don't provide format conversion.
510 *
511 * For anyone looking to find this data in the PRM, the easiest way to find
512 * format tables is to search for R11G11B10. There are only a few
513 * occurrences.
514 */
515 bool
516 isl_format_supports_typed_reads(const struct gen_device_info *devinfo,
517 enum isl_format format)
518 {
519 if (!format_info_exists(format))
520 return false;
521
522 return format_gen(devinfo) >= format_info[format].typed_read;
523 }
524
525 /**
526 * Returns true if the given format can support single-sample fast clears.
527 * This function only checks the format. In order to determine if a surface
528 * supports CCS_E, several other factors need to be considered such as tiling
529 * and sample count. See isl_surf_get_ccs_surf for details.
530 */
531 bool
532 isl_format_supports_ccs_d(const struct gen_device_info *devinfo,
533 enum isl_format format)
534 {
535 /* Fast clears were first added on Ivy Bridge */
536 if (devinfo->gen < 7)
537 return false;
538
539 if (!isl_format_supports_rendering(devinfo, format))
540 return false;
541
542 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
543
544 return fmtl->bpb == 32 || fmtl->bpb == 64 || fmtl->bpb == 128;
545 }
546
547 /**
548 * Returns true if the given format can support single-sample color
549 * compression. This function only checks the format. In order to determine
550 * if a surface supports CCS_E, several other factors need to be considered
551 * such as tiling and sample count. See isl_surf_get_ccs_surf for details.
552 */
553 bool
554 isl_format_supports_ccs_e(const struct gen_device_info *devinfo,
555 enum isl_format format)
556 {
557 if (!format_info_exists(format))
558 return false;
559
560 /* For simplicity, only report that a format supports CCS_E if blorp can
561 * perform bit-for-bit copies with an image of that format while compressed.
562 * This allows ISL users to avoid having to resolve the image before
563 * performing such a copy. We may want to change this behavior in the
564 * future.
565 *
566 * R11G11B10_FLOAT has no equivalent UINT format. Given how blorp_copy
567 * currently works, bit-for-bit copy operations are not possible without an
568 * intermediate resolve.
569 */
570 if (format == ISL_FORMAT_R11G11B10_FLOAT)
571 return false;
572
573 return format_gen(devinfo) >= format_info[format].ccs_e;
574 }
575
576 bool
577 isl_format_supports_multisampling(const struct gen_device_info *devinfo,
578 enum isl_format format)
579 {
580 /* From the Sandybridge PRM, Volume 4 Part 1 p72, SURFACE_STATE, Surface
581 * Format:
582 *
583 * If Number of Multisamples is set to a value other than
584 * MULTISAMPLECOUNT_1, this field cannot be set to the following
585 * formats:
586 *
587 * - any format with greater than 64 bits per element
588 * - any compressed texture format (BC*)
589 * - any YCRCB* format
590 *
591 * The restriction on the format's size is removed on Broadwell. Moreover,
592 * empirically it looks that even IvyBridge can handle multisampled surfaces
593 * with format sizes all the way to 128-bits (RGBA32F, RGBA32I, RGBA32UI).
594 *
595 * Also, there is an exception for HiZ which we treat as a compressed
596 * format and is allowed to be multisampled on Broadwell and earlier.
597 */
598 if (format == ISL_FORMAT_HIZ) {
599 /* On SKL+, HiZ is always single-sampled even when the primary surface
600 * is multisampled. See also isl_surf_get_hiz_surf().
601 */
602 return devinfo->gen <= 8;
603 } else if (devinfo->gen < 7 && isl_format_get_layout(format)->bpb > 64) {
604 return false;
605 } else if (isl_format_is_compressed(format)) {
606 return false;
607 } else if (isl_format_is_yuv(format)) {
608 return false;
609 } else {
610 return true;
611 }
612 }
613
614 /**
615 * Returns true if the two formats are "CCS_E compatible" meaning that you can
616 * render in one format with CCS_E enabled and then texture using the other
617 * format without needing a resolve.
618 *
619 * Note: Even if the formats are compatible, special care must be taken if a
620 * clear color is involved because the encoding of the clear color is heavily
621 * format-dependent.
622 */
623 bool
624 isl_formats_are_ccs_e_compatible(const struct gen_device_info *devinfo,
625 enum isl_format format1,
626 enum isl_format format2)
627 {
628 /* They must support CCS_E */
629 if (!isl_format_supports_ccs_e(devinfo, format1) ||
630 !isl_format_supports_ccs_e(devinfo, format2))
631 return false;
632
633 const struct isl_format_layout *fmtl1 = isl_format_get_layout(format1);
634 const struct isl_format_layout *fmtl2 = isl_format_get_layout(format2);
635
636 /* The compression used by CCS is not dependent on the actual data encoding
637 * of the format but only depends on the bit-layout of the channels.
638 */
639 return fmtl1->channels.r.bits == fmtl2->channels.r.bits &&
640 fmtl1->channels.g.bits == fmtl2->channels.g.bits &&
641 fmtl1->channels.b.bits == fmtl2->channels.b.bits &&
642 fmtl1->channels.a.bits == fmtl2->channels.a.bits;
643 }
644
645 static bool
646 isl_format_has_channel_type(enum isl_format fmt, enum isl_base_type type)
647 {
648 const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
649
650 return fmtl->channels.r.type == type ||
651 fmtl->channels.g.type == type ||
652 fmtl->channels.b.type == type ||
653 fmtl->channels.a.type == type ||
654 fmtl->channels.l.type == type ||
655 fmtl->channels.i.type == type ||
656 fmtl->channels.p.type == type;
657 }
658
659 bool
660 isl_format_has_unorm_channel(enum isl_format fmt)
661 {
662 return isl_format_has_channel_type(fmt, ISL_UNORM);
663 }
664
665 bool
666 isl_format_has_snorm_channel(enum isl_format fmt)
667 {
668 return isl_format_has_channel_type(fmt, ISL_SNORM);
669 }
670
671 bool
672 isl_format_has_ufloat_channel(enum isl_format fmt)
673 {
674 return isl_format_has_channel_type(fmt, ISL_UFLOAT);
675 }
676
677 bool
678 isl_format_has_sfloat_channel(enum isl_format fmt)
679 {
680 return isl_format_has_channel_type(fmt, ISL_SFLOAT);
681 }
682
683 bool
684 isl_format_has_uint_channel(enum isl_format fmt)
685 {
686 return isl_format_has_channel_type(fmt, ISL_UINT);
687 }
688
689 bool
690 isl_format_has_sint_channel(enum isl_format fmt)
691 {
692 return isl_format_has_channel_type(fmt, ISL_SINT);
693 }
694
695 bool
696 isl_format_has_color_component(enum isl_format fmt, int component)
697 {
698 const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
699 const uint8_t intensity = fmtl->channels.i.bits;
700 const uint8_t luminance = fmtl->channels.l.bits;
701
702 switch (component) {
703 case 0:
704 return (fmtl->channels.r.bits + intensity + luminance) > 0;
705 case 1:
706 return (fmtl->channels.g.bits + intensity + luminance) > 0;
707 case 2:
708 return (fmtl->channels.b.bits + intensity + luminance) > 0;
709 case 3:
710 return (fmtl->channels.a.bits + intensity) > 0;
711 default:
712 assert(!"Invalid color component: must be 0..3");
713 return false;
714 }
715 }
716
717 unsigned
718 isl_format_get_num_channels(enum isl_format fmt)
719 {
720 const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
721
722 assert(fmtl->channels.p.bits == 0);
723
724 return (fmtl->channels.r.bits > 0) +
725 (fmtl->channels.g.bits > 0) +
726 (fmtl->channels.b.bits > 0) +
727 (fmtl->channels.a.bits > 0) +
728 (fmtl->channels.l.bits > 0) +
729 (fmtl->channels.i.bits > 0);
730 }
731
732 uint32_t
733 isl_format_get_depth_format(enum isl_format fmt, bool has_stencil)
734 {
735 switch (fmt) {
736 default:
737 unreachable("bad isl depth format");
738 case ISL_FORMAT_R32_FLOAT_X8X24_TYPELESS:
739 assert(has_stencil);
740 return 0; /* D32_FLOAT_S8X24_UINT */
741 case ISL_FORMAT_R32_FLOAT:
742 assert(!has_stencil);
743 return 1; /* D32_FLOAT */
744 case ISL_FORMAT_R24_UNORM_X8_TYPELESS:
745 if (has_stencil) {
746 return 2; /* D24_UNORM_S8_UINT */
747 } else {
748 return 3; /* D24_UNORM_X8_UINT */
749 }
750 case ISL_FORMAT_R16_UNORM:
751 assert(!has_stencil);
752 return 5; /* D16_UNORM */
753 }
754 }
755
756 enum isl_format
757 isl_format_rgb_to_rgba(enum isl_format rgb)
758 {
759 assert(isl_format_is_rgb(rgb));
760
761 switch (rgb) {
762 case ISL_FORMAT_R32G32B32_FLOAT: return ISL_FORMAT_R32G32B32A32_FLOAT;
763 case ISL_FORMAT_R32G32B32_SINT: return ISL_FORMAT_R32G32B32A32_SINT;
764 case ISL_FORMAT_R32G32B32_UINT: return ISL_FORMAT_R32G32B32A32_UINT;
765 case ISL_FORMAT_R32G32B32_UNORM: return ISL_FORMAT_R32G32B32A32_UNORM;
766 case ISL_FORMAT_R32G32B32_SNORM: return ISL_FORMAT_R32G32B32A32_SNORM;
767 case ISL_FORMAT_R32G32B32_SSCALED: return ISL_FORMAT_R32G32B32A32_SSCALED;
768 case ISL_FORMAT_R32G32B32_USCALED: return ISL_FORMAT_R32G32B32A32_USCALED;
769 case ISL_FORMAT_R32G32B32_SFIXED: return ISL_FORMAT_R32G32B32A32_SFIXED;
770 case ISL_FORMAT_R8G8B8_UNORM: return ISL_FORMAT_R8G8B8A8_UNORM;
771 case ISL_FORMAT_R8G8B8_SNORM: return ISL_FORMAT_R8G8B8A8_SNORM;
772 case ISL_FORMAT_R8G8B8_SSCALED: return ISL_FORMAT_R8G8B8A8_SSCALED;
773 case ISL_FORMAT_R8G8B8_USCALED: return ISL_FORMAT_R8G8B8A8_USCALED;
774 case ISL_FORMAT_R16G16B16_FLOAT: return ISL_FORMAT_R16G16B16A16_FLOAT;
775 case ISL_FORMAT_R16G16B16_UNORM: return ISL_FORMAT_R16G16B16A16_UNORM;
776 case ISL_FORMAT_R16G16B16_SNORM: return ISL_FORMAT_R16G16B16A16_SNORM;
777 case ISL_FORMAT_R16G16B16_SSCALED: return ISL_FORMAT_R16G16B16A16_SSCALED;
778 case ISL_FORMAT_R16G16B16_USCALED: return ISL_FORMAT_R16G16B16A16_USCALED;
779 case ISL_FORMAT_R8G8B8_UNORM_SRGB: return ISL_FORMAT_R8G8B8A8_UNORM_SRGB;
780 case ISL_FORMAT_R16G16B16_UINT: return ISL_FORMAT_R16G16B16A16_UINT;
781 case ISL_FORMAT_R16G16B16_SINT: return ISL_FORMAT_R16G16B16A16_SINT;
782 case ISL_FORMAT_R8G8B8_UINT: return ISL_FORMAT_R8G8B8A8_UINT;
783 case ISL_FORMAT_R8G8B8_SINT: return ISL_FORMAT_R8G8B8A8_SINT;
784 default:
785 return ISL_FORMAT_UNSUPPORTED;
786 }
787 }
788
789 enum isl_format
790 isl_format_rgb_to_rgbx(enum isl_format rgb)
791 {
792 assert(isl_format_is_rgb(rgb));
793
794 switch (rgb) {
795 case ISL_FORMAT_R32G32B32_FLOAT:
796 return ISL_FORMAT_R32G32B32X32_FLOAT;
797 case ISL_FORMAT_R16G16B16_UNORM:
798 return ISL_FORMAT_R16G16B16X16_UNORM;
799 case ISL_FORMAT_R16G16B16_FLOAT:
800 return ISL_FORMAT_R16G16B16X16_FLOAT;
801 case ISL_FORMAT_R8G8B8_UNORM:
802 return ISL_FORMAT_R8G8B8X8_UNORM;
803 case ISL_FORMAT_R8G8B8_UNORM_SRGB:
804 return ISL_FORMAT_R8G8B8X8_UNORM_SRGB;
805 default:
806 return ISL_FORMAT_UNSUPPORTED;
807 }
808 }
809
810 enum isl_format
811 isl_format_rgbx_to_rgba(enum isl_format rgbx)
812 {
813 assert(isl_format_is_rgbx(rgbx));
814
815 switch (rgbx) {
816 case ISL_FORMAT_R32G32B32X32_FLOAT:
817 return ISL_FORMAT_R32G32B32A32_FLOAT;
818 case ISL_FORMAT_R16G16B16X16_UNORM:
819 return ISL_FORMAT_R16G16B16A16_UNORM;
820 case ISL_FORMAT_R16G16B16X16_FLOAT:
821 return ISL_FORMAT_R16G16B16A16_FLOAT;
822 case ISL_FORMAT_B8G8R8X8_UNORM:
823 return ISL_FORMAT_B8G8R8A8_UNORM;
824 case ISL_FORMAT_B8G8R8X8_UNORM_SRGB:
825 return ISL_FORMAT_B8G8R8A8_UNORM_SRGB;
826 case ISL_FORMAT_R8G8B8X8_UNORM:
827 return ISL_FORMAT_R8G8B8A8_UNORM;
828 case ISL_FORMAT_R8G8B8X8_UNORM_SRGB:
829 return ISL_FORMAT_R8G8B8A8_UNORM_SRGB;
830 case ISL_FORMAT_B10G10R10X2_UNORM:
831 return ISL_FORMAT_B10G10R10A2_UNORM;
832 case ISL_FORMAT_B5G5R5X1_UNORM:
833 return ISL_FORMAT_B5G5R5A1_UNORM;
834 case ISL_FORMAT_B5G5R5X1_UNORM_SRGB:
835 return ISL_FORMAT_B5G5R5A1_UNORM_SRGB;
836 default:
837 assert(!"Invalid RGBX format");
838 return rgbx;
839 }
840 }
841
842 static inline void
843 pack_channel(const union isl_color_value *value, unsigned i,
844 const struct isl_channel_layout *layout,
845 enum isl_colorspace colorspace,
846 uint32_t data_out[4])
847 {
848 if (layout->type == ISL_VOID)
849 return;
850
851 if (colorspace == ISL_COLORSPACE_SRGB)
852 assert(layout->type == ISL_UNORM);
853
854 uint32_t packed;
855 switch (layout->type) {
856 case ISL_UNORM:
857 if (colorspace == ISL_COLORSPACE_SRGB) {
858 if (layout->bits == 8) {
859 packed = util_format_linear_float_to_srgb_8unorm(value->f32[i]);
860 } else {
861 float srgb = util_format_linear_to_srgb_float(value->f32[i]);
862 packed = _mesa_float_to_unorm(srgb, layout->bits);
863 }
864 } else {
865 packed = _mesa_float_to_unorm(value->f32[i], layout->bits);
866 }
867 break;
868 case ISL_SNORM:
869 packed = _mesa_float_to_snorm(value->f32[i], layout->bits);
870 break;
871 case ISL_SFLOAT:
872 assert(layout->bits == 16 || layout->bits == 32);
873 if (layout->bits == 16) {
874 packed = _mesa_float_to_half(value->f32[i]);
875 } else {
876 packed = value->u32[i];
877 }
878 break;
879 case ISL_UINT:
880 packed = MIN(value->u32[i], MAX_UINT(layout->bits));
881 break;
882 case ISL_SINT:
883 packed = MIN(MAX(value->u32[i], MIN_INT(layout->bits)),
884 MAX_INT(layout->bits));
885 break;
886
887 default:
888 unreachable("Invalid channel type");
889 }
890
891 unsigned dword = layout->start_bit / 32;
892 unsigned bit = layout->start_bit % 32;
893 assert(bit + layout->bits <= 32);
894 data_out[dword] |= (packed & MAX_UINT(layout->bits)) << bit;
895 }
896
897 /**
898 * Take an isl_color_value and pack it into the actual bits as specified by
899 * the isl_format. This function is very slow for a format conversion
900 * function but should be fine for a single pixel worth of data.
901 */
902 void
903 isl_color_value_pack(const union isl_color_value *value,
904 enum isl_format format,
905 uint32_t *data_out)
906 {
907 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
908 assert(fmtl->colorspace == ISL_COLORSPACE_LINEAR ||
909 fmtl->colorspace == ISL_COLORSPACE_SRGB);
910 assert(!isl_format_is_compressed(format));
911
912 memset(data_out, 0, isl_align(fmtl->bpb, 32) / 8);
913
914 if (format == ISL_FORMAT_R9G9B9E5_SHAREDEXP) {
915 data_out[0] = float3_to_rgb9e5(value->f32);
916 return;
917 } else if (format == ISL_FORMAT_R11G11B10_FLOAT) {
918 data_out[0] = float3_to_r11g11b10f(value->f32);
919 return;
920 }
921
922 pack_channel(value, 0, &fmtl->channels.r, fmtl->colorspace, data_out);
923 pack_channel(value, 1, &fmtl->channels.g, fmtl->colorspace, data_out);
924 pack_channel(value, 2, &fmtl->channels.b, fmtl->colorspace, data_out);
925 pack_channel(value, 3, &fmtl->channels.a, ISL_COLORSPACE_LINEAR, data_out);
926 pack_channel(value, 0, &fmtl->channels.l, fmtl->colorspace, data_out);
927 pack_channel(value, 0, &fmtl->channels.i, ISL_COLORSPACE_LINEAR, data_out);
928 assert(fmtl->channels.p.bits == 0);
929 }
930
931 /** Extend an N-bit signed integer to 32 bits */
932 static inline int32_t
933 sign_extend(int32_t x, unsigned bits)
934 {
935 if (bits < 32) {
936 unsigned shift = 32 - bits;
937 return (x << shift) >> shift;
938 } else {
939 return x;
940 }
941 }
942
943 static inline void
944 unpack_channel(union isl_color_value *value,
945 unsigned start, unsigned count,
946 const struct isl_channel_layout *layout,
947 enum isl_colorspace colorspace,
948 const uint32_t *data_in)
949 {
950 if (layout->type == ISL_VOID)
951 return;
952
953 unsigned dword = layout->start_bit / 32;
954 unsigned bit = layout->start_bit % 32;
955 assert(bit + layout->bits <= 32);
956 uint32_t packed = (data_in[dword] >> bit) & MAX_UINT(layout->bits);
957
958 union {
959 uint32_t u32;
960 float f32;
961 } unpacked;
962
963 if (colorspace == ISL_COLORSPACE_SRGB)
964 assert(layout->type == ISL_UNORM);
965
966 switch (layout->type) {
967 case ISL_UNORM:
968 unpacked.f32 = _mesa_unorm_to_float(packed, layout->bits);
969 if (colorspace == ISL_COLORSPACE_SRGB) {
970 if (layout->bits == 8) {
971 unpacked.f32 = util_format_srgb_8unorm_to_linear_float(packed);
972 } else {
973 float srgb = _mesa_unorm_to_float(packed, layout->bits);
974 unpacked.f32 = util_format_srgb_to_linear_float(srgb);
975 }
976 } else {
977 unpacked.f32 = _mesa_unorm_to_float(packed, layout->bits);
978 }
979 break;
980 case ISL_SNORM:
981 unpacked.f32 = _mesa_snorm_to_float(sign_extend(packed, layout->bits),
982 layout->bits);
983 break;
984 case ISL_SFLOAT:
985 assert(layout->bits == 16 || layout->bits == 32);
986 if (layout->bits == 16) {
987 unpacked.f32 = _mesa_half_to_float(packed);
988 } else {
989 unpacked.u32 = packed;
990 }
991 break;
992 case ISL_UINT:
993 unpacked.u32 = packed;
994 break;
995 case ISL_SINT:
996 unpacked.u32 = sign_extend(packed, layout->bits);
997 break;
998
999 default:
1000 unreachable("Invalid channel type");
1001 }
1002
1003 for (unsigned i = 0; i < count; i++)
1004 value->u32[start + i] = unpacked.u32;
1005 }
1006
1007 /**
1008 * Take unpack an isl_color_value from the actual bits as specified by
1009 * the isl_format. This function is very slow for a format conversion
1010 * function but should be fine for a single pixel worth of data.
1011 */
1012 void
1013 isl_color_value_unpack(union isl_color_value *value,
1014 enum isl_format format,
1015 const uint32_t data_in[4])
1016 {
1017 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
1018 assert(fmtl->colorspace == ISL_COLORSPACE_LINEAR ||
1019 fmtl->colorspace == ISL_COLORSPACE_SRGB);
1020 assert(!isl_format_is_compressed(format));
1021
1022 /* Default to opaque black. */
1023 memset(value, 0, sizeof(*value));
1024 if (isl_format_has_int_channel(format)) {
1025 value->u32[3] = 1u;
1026 } else {
1027 value->f32[3] = 1.0f;
1028 }
1029
1030 if (format == ISL_FORMAT_R9G9B9E5_SHAREDEXP) {
1031 rgb9e5_to_float3(data_in[0], value->f32);
1032 return;
1033 } else if (format == ISL_FORMAT_R11G11B10_FLOAT) {
1034 r11g11b10f_to_float3(data_in[0], value->f32);
1035 return;
1036 }
1037
1038 unpack_channel(value, 0, 1, &fmtl->channels.r, fmtl->colorspace, data_in);
1039 unpack_channel(value, 1, 1, &fmtl->channels.g, fmtl->colorspace, data_in);
1040 unpack_channel(value, 2, 1, &fmtl->channels.b, fmtl->colorspace, data_in);
1041 unpack_channel(value, 3, 1, &fmtl->channels.a, ISL_COLORSPACE_LINEAR, data_in);
1042 unpack_channel(value, 0, 3, &fmtl->channels.l, fmtl->colorspace, data_in);
1043 unpack_channel(value, 0, 4, &fmtl->channels.i, ISL_COLORSPACE_LINEAR, data_in);
1044 assert(fmtl->channels.p.bits == 0);
1045 }