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intel/isl: Several UNORM formats support typed writes on gen11+
[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 SF( 75, 75, x, x, x, x, x, x, x, x, x, x, R8G8B8_UNORM_SRGB)
298 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC1_RGB8)
299 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC2_RGB8)
300 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, EAC_R11)
301 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, EAC_RG11)
302 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, EAC_SIGNED_R11)
303 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, EAC_SIGNED_RG11)
304 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC2_SRGB8)
305 SF( 90, x, x, x, x, x, 75, x, x, x, x, x, R16G16B16_UINT)
306 SF( 90, x, x, x, x, x, 75, x, x, x, x, x, R16G16B16_SINT)
307 SF( x, x, x, x, x, x, 75, x, x, x, x, x, R32_SFIXED)
308 SF( x, x, x, x, x, x, 75, x, x, x, x, x, R10G10B10A2_SNORM)
309 SF( x, x, x, x, x, x, 75, x, x, x, x, x, R10G10B10A2_USCALED)
310 SF( x, x, x, x, x, x, 75, x, x, x, x, x, R10G10B10A2_SSCALED)
311 SF( x, x, x, x, x, x, 75, x, x, x, x, x, R10G10B10A2_SINT)
312 SF( x, x, x, x, x, x, 75, x, x, x, x, x, B10G10R10A2_SNORM)
313 SF( x, x, x, x, x, x, 75, x, x, x, x, x, B10G10R10A2_USCALED)
314 SF( x, x, x, x, x, x, 75, x, x, x, x, x, B10G10R10A2_SSCALED)
315 SF( x, x, x, x, x, x, 75, x, x, x, x, x, B10G10R10A2_UINT)
316 SF( x, x, x, x, x, x, 75, x, x, x, x, x, B10G10R10A2_SINT)
317 SF( x, x, x, x, x, x, 80, x, x, x, x, x, R64G64B64A64_PASSTHRU)
318 SF( x, x, x, x, x, x, 80, x, x, x, x, x, R64G64B64_PASSTHRU)
319 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC2_RGB8_PTA)
320 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC2_SRGB8_PTA)
321 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC2_EAC_RGBA8)
322 SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC2_EAC_SRGB8_A8)
323 SF( 90, x, x, x, x, x, 75, x, x, x, x, x, R8G8B8_UINT)
324 SF( 90, x, x, x, x, x, 75, x, x, x, x, x, R8G8B8_SINT)
325 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_4X4_FLT16)
326 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_5X4_FLT16)
327 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_5X5_FLT16)
328 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_6X5_FLT16)
329 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_6X6_FLT16)
330 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_8X5_FLT16)
331 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_8X6_FLT16)
332 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_8X8_FLT16)
333 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X5_FLT16)
334 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X6_FLT16)
335 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X8_FLT16)
336 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X10_FLT16)
337 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_12X10_FLT16)
338 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_12X12_FLT16)
339 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_4X4_U8SRGB)
340 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_5X4_U8SRGB)
341 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_5X5_U8SRGB)
342 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_6X5_U8SRGB)
343 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_6X6_U8SRGB)
344 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_8X5_U8SRGB)
345 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_8X6_U8SRGB)
346 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_8X8_U8SRGB)
347 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X5_U8SRGB)
348 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X6_U8SRGB)
349 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X8_U8SRGB)
350 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X10_U8SRGB)
351 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_12X10_U8SRGB)
352 SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_12X12_U8SRGB)
353 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_4X4_FLT16)
354 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_5X4_FLT16)
355 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_5X5_FLT16)
356 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_6X5_FLT16)
357 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_6X6_FLT16)
358 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_8X5_FLT16)
359 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_8X6_FLT16)
360 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_8X8_FLT16)
361 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_10X5_FLT16)
362 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_10X6_FLT16)
363 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_10X8_FLT16)
364 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_10X10_FLT16)
365 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_12X10_FLT16)
366 SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_12X12_FLT16)
367 };
368 #undef x
369 #undef Y
370
371 static unsigned
372 format_gen(const struct gen_device_info *devinfo)
373 {
374 return devinfo->gen * 10 + (devinfo->is_g4x || devinfo->is_haswell) * 5;
375 }
376
377 bool
378 isl_format_supports_rendering(const struct gen_device_info *devinfo,
379 enum isl_format format)
380 {
381 if (!format_info[format].exists)
382 return false;
383
384 return format_gen(devinfo) >= format_info[format].render_target;
385 }
386
387 bool
388 isl_format_supports_alpha_blending(const struct gen_device_info *devinfo,
389 enum isl_format format)
390 {
391 if (!format_info[format].exists)
392 return false;
393
394 return format_gen(devinfo) >= format_info[format].alpha_blend;
395 }
396
397 bool
398 isl_format_supports_sampling(const struct gen_device_info *devinfo,
399 enum isl_format format)
400 {
401 if (!format_info[format].exists)
402 return false;
403
404 if (devinfo->is_baytrail) {
405 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
406 /* Support for ETC1 and ETC2 exists on Bay Trail even though big-core
407 * GPUs didn't get it until Broadwell.
408 */
409 if (fmtl->txc == ISL_TXC_ETC1 || fmtl->txc == ISL_TXC_ETC2)
410 return true;
411 } else if (devinfo->is_cherryview) {
412 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
413 /* Support for ASTC LDR exists on Cherry View even though big-core
414 * GPUs didn't get it until Skylake.
415 */
416 if (fmtl->txc == ISL_TXC_ASTC)
417 return format < ISL_FORMAT_ASTC_HDR_2D_4X4_FLT16;
418 } else if (gen_device_info_is_9lp(devinfo)) {
419 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
420 /* Support for ASTC HDR exists on Broxton even though big-core
421 * GPUs didn't get it until Cannonlake.
422 */
423 if (fmtl->txc == ISL_TXC_ASTC)
424 return true;
425 }
426
427 return format_gen(devinfo) >= format_info[format].sampling;
428 }
429
430 bool
431 isl_format_supports_filtering(const struct gen_device_info *devinfo,
432 enum isl_format format)
433 {
434 if (!format_info[format].exists)
435 return false;
436
437 if (devinfo->is_baytrail) {
438 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
439 /* Support for ETC1 and ETC2 exists on Bay Trail even though big-core
440 * GPUs didn't get it until Broadwell.
441 */
442 if (fmtl->txc == ISL_TXC_ETC1 || fmtl->txc == ISL_TXC_ETC2)
443 return true;
444 } else if (devinfo->is_cherryview) {
445 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
446 /* Support for ASTC LDR exists on Cherry View even though big-core
447 * GPUs didn't get it until Skylake.
448 */
449 if (fmtl->txc == ISL_TXC_ASTC)
450 return format < ISL_FORMAT_ASTC_HDR_2D_4X4_FLT16;
451 } else if (gen_device_info_is_9lp(devinfo)) {
452 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
453 /* Support for ASTC HDR exists on Broxton even though big-core
454 * GPUs didn't get it until Cannonlake.
455 */
456 if (fmtl->txc == ISL_TXC_ASTC)
457 return true;
458 }
459
460 return format_gen(devinfo) >= format_info[format].filtering;
461 }
462
463 bool
464 isl_format_supports_vertex_fetch(const struct gen_device_info *devinfo,
465 enum isl_format format)
466 {
467 if (!format_info[format].exists)
468 return false;
469
470 /* For vertex fetch, Bay Trail supports the same set of formats as Haswell
471 * but is a superset of Ivy Bridge.
472 */
473 if (devinfo->is_baytrail)
474 return 75 >= format_info[format].input_vb;
475
476 return format_gen(devinfo) >= format_info[format].input_vb;
477 }
478
479 /**
480 * Returns true if the given format can support typed writes.
481 */
482 bool
483 isl_format_supports_typed_writes(const struct gen_device_info *devinfo,
484 enum isl_format format)
485 {
486 if (!format_info[format].exists)
487 return false;
488
489 return format_gen(devinfo) >= format_info[format].typed_write;
490 }
491
492
493 /**
494 * Returns true if the given format can support typed reads with format
495 * conversion fully handled by hardware. On Sky Lake, all formats which are
496 * supported for typed writes also support typed reads but some of them return
497 * the raw image data and don't provide format conversion.
498 *
499 * For anyone looking to find this data in the PRM, the easiest way to find
500 * format tables is to search for R11G11B10. There are only a few
501 * occurrences.
502 */
503 bool
504 isl_format_supports_typed_reads(const struct gen_device_info *devinfo,
505 enum isl_format format)
506 {
507 if (!format_info[format].exists)
508 return false;
509
510 return format_gen(devinfo) >= format_info[format].typed_read;
511 }
512
513 /**
514 * Returns true if the given format can support single-sample fast clears.
515 * This function only checks the format. In order to determine if a surface
516 * supports CCS_E, several other factors need to be considered such as tiling
517 * and sample count. See isl_surf_get_ccs_surf for details.
518 */
519 bool
520 isl_format_supports_ccs_d(const struct gen_device_info *devinfo,
521 enum isl_format format)
522 {
523 /* Fast clears were first added on Ivy Bridge */
524 if (devinfo->gen < 7)
525 return false;
526
527 if (!isl_format_supports_rendering(devinfo, format))
528 return false;
529
530 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
531
532 return fmtl->bpb == 32 || fmtl->bpb == 64 || fmtl->bpb == 128;
533 }
534
535 /**
536 * Returns true if the given format can support single-sample color
537 * compression. This function only checks the format. In order to determine
538 * if a surface supports CCS_E, several other factors need to be considered
539 * such as tiling and sample count. See isl_surf_get_ccs_surf for details.
540 */
541 bool
542 isl_format_supports_ccs_e(const struct gen_device_info *devinfo,
543 enum isl_format format)
544 {
545 if (!format_info[format].exists)
546 return false;
547
548 /* For simplicity, only report that a format supports CCS_E if blorp can
549 * perform bit-for-bit copies with an image of that format while compressed.
550 * This allows ISL users to avoid having to resolve the image before
551 * performing such a copy. We may want to change this behavior in the
552 * future.
553 *
554 * R11G11B10_FLOAT has no equivalent UINT format. Given how blorp_copy
555 * currently works, bit-for-bit copy operations are not possible without an
556 * intermediate resolve.
557 */
558 if (format == ISL_FORMAT_R11G11B10_FLOAT)
559 return false;
560
561 return format_gen(devinfo) >= format_info[format].ccs_e;
562 }
563
564 bool
565 isl_format_supports_multisampling(const struct gen_device_info *devinfo,
566 enum isl_format format)
567 {
568 /* From the Sandybridge PRM, Volume 4 Part 1 p72, SURFACE_STATE, Surface
569 * Format:
570 *
571 * If Number of Multisamples is set to a value other than
572 * MULTISAMPLECOUNT_1, this field cannot be set to the following
573 * formats:
574 *
575 * - any format with greater than 64 bits per element
576 * - any compressed texture format (BC*)
577 * - any YCRCB* format
578 *
579 * The restriction on the format's size is removed on Broadwell. Moreover,
580 * empirically it looks that even IvyBridge can handle multisampled surfaces
581 * with format sizes all the way to 128-bits (RGBA32F, RGBA32I, RGBA32UI).
582 *
583 * Also, there is an exception for HiZ which we treat as a compressed
584 * format and is allowed to be multisampled on Broadwell and earlier.
585 */
586 if (format == ISL_FORMAT_HIZ) {
587 /* On SKL+, HiZ is always single-sampled even when the primary surface
588 * is multisampled. See also isl_surf_get_hiz_surf().
589 */
590 return devinfo->gen <= 8;
591 } else if (devinfo->gen < 7 && isl_format_get_layout(format)->bpb > 64) {
592 return false;
593 } else if (isl_format_is_compressed(format)) {
594 return false;
595 } else if (isl_format_is_yuv(format)) {
596 return false;
597 } else {
598 return true;
599 }
600 }
601
602 /**
603 * Returns true if the two formats are "CCS_E compatible" meaning that you can
604 * render in one format with CCS_E enabled and then texture using the other
605 * format without needing a resolve.
606 *
607 * Note: Even if the formats are compatible, special care must be taken if a
608 * clear color is involved because the encoding of the clear color is heavily
609 * format-dependent.
610 */
611 bool
612 isl_formats_are_ccs_e_compatible(const struct gen_device_info *devinfo,
613 enum isl_format format1,
614 enum isl_format format2)
615 {
616 /* They must support CCS_E */
617 if (!isl_format_supports_ccs_e(devinfo, format1) ||
618 !isl_format_supports_ccs_e(devinfo, format2))
619 return false;
620
621 const struct isl_format_layout *fmtl1 = isl_format_get_layout(format1);
622 const struct isl_format_layout *fmtl2 = isl_format_get_layout(format2);
623
624 /* The compression used by CCS is not dependent on the actual data encoding
625 * of the format but only depends on the bit-layout of the channels.
626 */
627 return fmtl1->channels.r.bits == fmtl2->channels.r.bits &&
628 fmtl1->channels.g.bits == fmtl2->channels.g.bits &&
629 fmtl1->channels.b.bits == fmtl2->channels.b.bits &&
630 fmtl1->channels.a.bits == fmtl2->channels.a.bits;
631 }
632
633 static bool
634 isl_format_has_channel_type(enum isl_format fmt, enum isl_base_type type)
635 {
636 const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
637
638 return fmtl->channels.r.type == type ||
639 fmtl->channels.g.type == type ||
640 fmtl->channels.b.type == type ||
641 fmtl->channels.a.type == type ||
642 fmtl->channels.l.type == type ||
643 fmtl->channels.i.type == type ||
644 fmtl->channels.p.type == type;
645 }
646
647 bool
648 isl_format_has_unorm_channel(enum isl_format fmt)
649 {
650 return isl_format_has_channel_type(fmt, ISL_UNORM);
651 }
652
653 bool
654 isl_format_has_snorm_channel(enum isl_format fmt)
655 {
656 return isl_format_has_channel_type(fmt, ISL_SNORM);
657 }
658
659 bool
660 isl_format_has_ufloat_channel(enum isl_format fmt)
661 {
662 return isl_format_has_channel_type(fmt, ISL_UFLOAT);
663 }
664
665 bool
666 isl_format_has_sfloat_channel(enum isl_format fmt)
667 {
668 return isl_format_has_channel_type(fmt, ISL_SFLOAT);
669 }
670
671 bool
672 isl_format_has_uint_channel(enum isl_format fmt)
673 {
674 return isl_format_has_channel_type(fmt, ISL_UINT);
675 }
676
677 bool
678 isl_format_has_sint_channel(enum isl_format fmt)
679 {
680 return isl_format_has_channel_type(fmt, ISL_SINT);
681 }
682
683 unsigned
684 isl_format_get_num_channels(enum isl_format fmt)
685 {
686 const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
687
688 assert(fmtl->channels.p.bits == 0);
689
690 return (fmtl->channels.r.bits > 0) +
691 (fmtl->channels.g.bits > 0) +
692 (fmtl->channels.b.bits > 0) +
693 (fmtl->channels.a.bits > 0) +
694 (fmtl->channels.l.bits > 0) +
695 (fmtl->channels.i.bits > 0);
696 }
697
698 uint32_t
699 isl_format_get_depth_format(enum isl_format fmt, bool has_stencil)
700 {
701 switch (fmt) {
702 default:
703 unreachable("bad isl depth format");
704 case ISL_FORMAT_R32_FLOAT_X8X24_TYPELESS:
705 assert(has_stencil);
706 return 0; /* D32_FLOAT_S8X24_UINT */
707 case ISL_FORMAT_R32_FLOAT:
708 assert(!has_stencil);
709 return 1; /* D32_FLOAT */
710 case ISL_FORMAT_R24_UNORM_X8_TYPELESS:
711 if (has_stencil) {
712 return 2; /* D24_UNORM_S8_UINT */
713 } else {
714 return 3; /* D24_UNORM_X8_UINT */
715 }
716 case ISL_FORMAT_R16_UNORM:
717 assert(!has_stencil);
718 return 5; /* D16_UNORM */
719 }
720 }
721
722 enum isl_format
723 isl_format_rgb_to_rgba(enum isl_format rgb)
724 {
725 assert(isl_format_is_rgb(rgb));
726
727 switch (rgb) {
728 case ISL_FORMAT_R32G32B32_FLOAT: return ISL_FORMAT_R32G32B32A32_FLOAT;
729 case ISL_FORMAT_R32G32B32_SINT: return ISL_FORMAT_R32G32B32A32_SINT;
730 case ISL_FORMAT_R32G32B32_UINT: return ISL_FORMAT_R32G32B32A32_UINT;
731 case ISL_FORMAT_R32G32B32_UNORM: return ISL_FORMAT_R32G32B32A32_UNORM;
732 case ISL_FORMAT_R32G32B32_SNORM: return ISL_FORMAT_R32G32B32A32_SNORM;
733 case ISL_FORMAT_R32G32B32_SSCALED: return ISL_FORMAT_R32G32B32A32_SSCALED;
734 case ISL_FORMAT_R32G32B32_USCALED: return ISL_FORMAT_R32G32B32A32_USCALED;
735 case ISL_FORMAT_R32G32B32_SFIXED: return ISL_FORMAT_R32G32B32A32_SFIXED;
736 case ISL_FORMAT_R8G8B8_UNORM: return ISL_FORMAT_R8G8B8A8_UNORM;
737 case ISL_FORMAT_R8G8B8_SNORM: return ISL_FORMAT_R8G8B8A8_SNORM;
738 case ISL_FORMAT_R8G8B8_SSCALED: return ISL_FORMAT_R8G8B8A8_SSCALED;
739 case ISL_FORMAT_R8G8B8_USCALED: return ISL_FORMAT_R8G8B8A8_USCALED;
740 case ISL_FORMAT_R16G16B16_FLOAT: return ISL_FORMAT_R16G16B16A16_FLOAT;
741 case ISL_FORMAT_R16G16B16_UNORM: return ISL_FORMAT_R16G16B16A16_UNORM;
742 case ISL_FORMAT_R16G16B16_SNORM: return ISL_FORMAT_R16G16B16A16_SNORM;
743 case ISL_FORMAT_R16G16B16_SSCALED: return ISL_FORMAT_R16G16B16A16_SSCALED;
744 case ISL_FORMAT_R16G16B16_USCALED: return ISL_FORMAT_R16G16B16A16_USCALED;
745 case ISL_FORMAT_R8G8B8_UNORM_SRGB: return ISL_FORMAT_R8G8B8A8_UNORM_SRGB;
746 case ISL_FORMAT_R16G16B16_UINT: return ISL_FORMAT_R16G16B16A16_UINT;
747 case ISL_FORMAT_R16G16B16_SINT: return ISL_FORMAT_R16G16B16A16_SINT;
748 case ISL_FORMAT_R8G8B8_UINT: return ISL_FORMAT_R8G8B8A8_UINT;
749 case ISL_FORMAT_R8G8B8_SINT: return ISL_FORMAT_R8G8B8A8_SINT;
750 default:
751 return ISL_FORMAT_UNSUPPORTED;
752 }
753 }
754
755 enum isl_format
756 isl_format_rgb_to_rgbx(enum isl_format rgb)
757 {
758 assert(isl_format_is_rgb(rgb));
759
760 switch (rgb) {
761 case ISL_FORMAT_R32G32B32_FLOAT:
762 return ISL_FORMAT_R32G32B32X32_FLOAT;
763 case ISL_FORMAT_R16G16B16_UNORM:
764 return ISL_FORMAT_R16G16B16X16_UNORM;
765 case ISL_FORMAT_R16G16B16_FLOAT:
766 return ISL_FORMAT_R16G16B16X16_FLOAT;
767 case ISL_FORMAT_R8G8B8_UNORM:
768 return ISL_FORMAT_R8G8B8X8_UNORM;
769 case ISL_FORMAT_R8G8B8_UNORM_SRGB:
770 return ISL_FORMAT_R8G8B8X8_UNORM_SRGB;
771 default:
772 return ISL_FORMAT_UNSUPPORTED;
773 }
774 }
775
776 enum isl_format
777 isl_format_rgbx_to_rgba(enum isl_format rgbx)
778 {
779 assert(isl_format_is_rgbx(rgbx));
780
781 switch (rgbx) {
782 case ISL_FORMAT_R32G32B32X32_FLOAT:
783 return ISL_FORMAT_R32G32B32A32_FLOAT;
784 case ISL_FORMAT_R16G16B16X16_UNORM:
785 return ISL_FORMAT_R16G16B16A16_UNORM;
786 case ISL_FORMAT_R16G16B16X16_FLOAT:
787 return ISL_FORMAT_R16G16B16A16_FLOAT;
788 case ISL_FORMAT_B8G8R8X8_UNORM:
789 return ISL_FORMAT_B8G8R8A8_UNORM;
790 case ISL_FORMAT_B8G8R8X8_UNORM_SRGB:
791 return ISL_FORMAT_B8G8R8A8_UNORM_SRGB;
792 case ISL_FORMAT_R8G8B8X8_UNORM:
793 return ISL_FORMAT_R8G8B8A8_UNORM;
794 case ISL_FORMAT_R8G8B8X8_UNORM_SRGB:
795 return ISL_FORMAT_R8G8B8A8_UNORM_SRGB;
796 case ISL_FORMAT_B10G10R10X2_UNORM:
797 return ISL_FORMAT_B10G10R10A2_UNORM;
798 case ISL_FORMAT_B5G5R5X1_UNORM:
799 return ISL_FORMAT_B5G5R5A1_UNORM;
800 case ISL_FORMAT_B5G5R5X1_UNORM_SRGB:
801 return ISL_FORMAT_B5G5R5A1_UNORM_SRGB;
802 default:
803 assert(!"Invalid RGBX format");
804 return rgbx;
805 }
806 }
807
808 static inline void
809 pack_channel(const union isl_color_value *value, unsigned i,
810 const struct isl_channel_layout *layout,
811 enum isl_colorspace colorspace,
812 uint32_t data_out[4])
813 {
814 if (layout->type == ISL_VOID)
815 return;
816
817 if (colorspace == ISL_COLORSPACE_SRGB)
818 assert(layout->type == ISL_UNORM);
819
820 uint32_t packed;
821 switch (layout->type) {
822 case ISL_UNORM:
823 if (colorspace == ISL_COLORSPACE_SRGB) {
824 if (layout->bits == 8) {
825 packed = util_format_linear_float_to_srgb_8unorm(value->f32[i]);
826 } else {
827 float srgb = util_format_linear_to_srgb_float(value->f32[i]);
828 packed = _mesa_float_to_unorm(srgb, layout->bits);
829 }
830 } else {
831 packed = _mesa_float_to_unorm(value->f32[i], layout->bits);
832 }
833 break;
834 case ISL_SNORM:
835 packed = _mesa_float_to_snorm(value->f32[i], layout->bits);
836 break;
837 case ISL_SFLOAT:
838 assert(layout->bits == 16 || layout->bits == 32);
839 if (layout->bits == 16) {
840 packed = _mesa_float_to_half(value->f32[i]);
841 } else {
842 packed = value->u32[i];
843 }
844 break;
845 case ISL_UINT:
846 packed = MIN(value->u32[i], MAX_UINT(layout->bits));
847 break;
848 case ISL_SINT:
849 packed = MIN(MAX(value->u32[i], MIN_INT(layout->bits)),
850 MAX_INT(layout->bits));
851 break;
852
853 default:
854 unreachable("Invalid channel type");
855 }
856
857 unsigned dword = layout->start_bit / 32;
858 unsigned bit = layout->start_bit % 32;
859 assert(bit + layout->bits <= 32);
860 data_out[dword] |= (packed & MAX_UINT(layout->bits)) << bit;
861 }
862
863 /**
864 * Take an isl_color_value and pack it into the actual bits as specified by
865 * the isl_format. This function is very slow for a format conversion
866 * function but should be fine for a single pixel worth of data.
867 */
868 void
869 isl_color_value_pack(const union isl_color_value *value,
870 enum isl_format format,
871 uint32_t *data_out)
872 {
873 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
874 assert(fmtl->colorspace == ISL_COLORSPACE_LINEAR ||
875 fmtl->colorspace == ISL_COLORSPACE_SRGB);
876 assert(!isl_format_is_compressed(format));
877
878 memset(data_out, 0, isl_align(fmtl->bpb, 32) / 8);
879
880 if (format == ISL_FORMAT_R9G9B9E5_SHAREDEXP) {
881 data_out[0] = float3_to_rgb9e5(value->f32);
882 return;
883 } else if (format == ISL_FORMAT_R11G11B10_FLOAT) {
884 data_out[0] = float3_to_r11g11b10f(value->f32);
885 return;
886 }
887
888 pack_channel(value, 0, &fmtl->channels.r, fmtl->colorspace, data_out);
889 pack_channel(value, 1, &fmtl->channels.g, fmtl->colorspace, data_out);
890 pack_channel(value, 2, &fmtl->channels.b, fmtl->colorspace, data_out);
891 pack_channel(value, 3, &fmtl->channels.a, ISL_COLORSPACE_LINEAR, data_out);
892 pack_channel(value, 0, &fmtl->channels.l, fmtl->colorspace, data_out);
893 pack_channel(value, 0, &fmtl->channels.i, ISL_COLORSPACE_LINEAR, data_out);
894 assert(fmtl->channels.p.bits == 0);
895 }
896
897 /** Extend an N-bit signed integer to 32 bits */
898 static inline int32_t
899 sign_extend(int32_t x, unsigned bits)
900 {
901 if (bits < 32) {
902 unsigned shift = 32 - bits;
903 return (x << shift) >> shift;
904 } else {
905 return x;
906 }
907 }
908
909 static inline void
910 unpack_channel(union isl_color_value *value,
911 unsigned start, unsigned count,
912 const struct isl_channel_layout *layout,
913 enum isl_colorspace colorspace,
914 const uint32_t *data_in)
915 {
916 if (layout->type == ISL_VOID)
917 return;
918
919 unsigned dword = layout->start_bit / 32;
920 unsigned bit = layout->start_bit % 32;
921 assert(bit + layout->bits <= 32);
922 uint32_t packed = (data_in[dword] >> bit) & MAX_UINT(layout->bits);
923
924 union {
925 uint32_t u32;
926 float f32;
927 } unpacked;
928
929 if (colorspace == ISL_COLORSPACE_SRGB)
930 assert(layout->type == ISL_UNORM);
931
932 switch (layout->type) {
933 case ISL_UNORM:
934 unpacked.f32 = _mesa_unorm_to_float(packed, layout->bits);
935 if (colorspace == ISL_COLORSPACE_SRGB) {
936 if (layout->bits == 8) {
937 unpacked.f32 = util_format_srgb_8unorm_to_linear_float(packed);
938 } else {
939 float srgb = _mesa_unorm_to_float(packed, layout->bits);
940 unpacked.f32 = util_format_srgb_to_linear_float(srgb);
941 }
942 } else {
943 unpacked.f32 = _mesa_unorm_to_float(packed, layout->bits);
944 }
945 break;
946 case ISL_SNORM:
947 unpacked.f32 = _mesa_snorm_to_float(sign_extend(packed, layout->bits),
948 layout->bits);
949 break;
950 case ISL_SFLOAT:
951 assert(layout->bits == 16 || layout->bits == 32);
952 if (layout->bits == 16) {
953 unpacked.f32 = _mesa_half_to_float(packed);
954 } else {
955 unpacked.u32 = packed;
956 }
957 break;
958 case ISL_UINT:
959 unpacked.u32 = packed;
960 break;
961 case ISL_SINT:
962 unpacked.u32 = sign_extend(packed, layout->bits);
963 break;
964
965 default:
966 unreachable("Invalid channel type");
967 }
968
969 for (unsigned i = 0; i < count; i++)
970 value->u32[start + i] = unpacked.u32;
971 }
972
973 /**
974 * Take unpack an isl_color_value from the actual bits as specified by
975 * the isl_format. This function is very slow for a format conversion
976 * function but should be fine for a single pixel worth of data.
977 */
978 void
979 isl_color_value_unpack(union isl_color_value *value,
980 enum isl_format format,
981 const uint32_t data_in[4])
982 {
983 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
984 assert(fmtl->colorspace == ISL_COLORSPACE_LINEAR ||
985 fmtl->colorspace == ISL_COLORSPACE_SRGB);
986 assert(!isl_format_is_compressed(format));
987
988 /* Default to opaque black. */
989 memset(value, 0, sizeof(*value));
990 if (isl_format_has_int_channel(format)) {
991 value->u32[3] = 1u;
992 } else {
993 value->f32[3] = 1.0f;
994 }
995
996 if (format == ISL_FORMAT_R9G9B9E5_SHAREDEXP) {
997 rgb9e5_to_float3(data_in[0], value->f32);
998 return;
999 } else if (format == ISL_FORMAT_R11G11B10_FLOAT) {
1000 r11g11b10f_to_float3(data_in[0], value->f32);
1001 return;
1002 }
1003
1004 unpack_channel(value, 0, 1, &fmtl->channels.r, fmtl->colorspace, data_in);
1005 unpack_channel(value, 1, 1, &fmtl->channels.g, fmtl->colorspace, data_in);
1006 unpack_channel(value, 2, 1, &fmtl->channels.b, fmtl->colorspace, data_in);
1007 unpack_channel(value, 3, 1, &fmtl->channels.a, ISL_COLORSPACE_LINEAR, data_in);
1008 unpack_channel(value, 0, 3, &fmtl->channels.l, fmtl->colorspace, data_in);
1009 unpack_channel(value, 0, 4, &fmtl->channels.i, ISL_COLORSPACE_LINEAR, data_in);
1010 assert(fmtl->channels.p.bits == 0);
1011 }