projects / mesa.git / blob
? search:


3cdf676c74b1bec97be760d46c2b394fc35af661
[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, x, 90, R16G16B16A16_UNORM)
121 SF( Y, Y, x, x, Y, 60, Y, x, x, 70, x, 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, x, 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, x, 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, x, 90, R16G16_UNORM)
159 SF( Y, Y, x, x, Y, 60, Y, x, x, 70, x, 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, x, x, R8G8_UNORM)
202 SF( Y, Y, x, Y, Y, 60, Y, x, x, 70, x, 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, x, x, R16_UNORM)
206 SF( Y, Y, x, x, Y, 60, Y, x, x, 70, x, 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, x, x, R8_UNORM)
239 SF( Y, Y, x, x, Y, 60, Y, x, x, 70, x, 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, x, 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 /* blorp_copy currently doesn't support formats with different bit-widths
562 * per-channel. Until that support is added, report that these formats don't
563 * support CCS_E. FIXME: Add support for these formats.
564 */
565 if (format == ISL_FORMAT_B10G10R10A2_UNORM ||
566 format == ISL_FORMAT_B10G10R10A2_UNORM_SRGB ||
567 format == ISL_FORMAT_R10G10B10A2_UNORM ||
568 format == ISL_FORMAT_R10G10B10A2_UINT) {
569 return false;
570 }
571
572 return format_gen(devinfo) >= format_info[format].ccs_e;
573 }
574
575 bool
576 isl_format_supports_multisampling(const struct gen_device_info *devinfo,
577 enum isl_format format)
578 {
579 /* From the Sandybridge PRM, Volume 4 Part 1 p72, SURFACE_STATE, Surface
580 * Format:
581 *
582 * If Number of Multisamples is set to a value other than
583 * MULTISAMPLECOUNT_1, this field cannot be set to the following
584 * formats:
585 *
586 * - any format with greater than 64 bits per element
587 * - any compressed texture format (BC*)
588 * - any YCRCB* format
589 *
590 * The restriction on the format's size is removed on Broadwell. Moreover,
591 * empirically it looks that even IvyBridge can handle multisampled surfaces
592 * with format sizes all the way to 128-bits (RGBA32F, RGBA32I, RGBA32UI).
593 *
594 * Also, there is an exception for HiZ which we treat as a compressed
595 * format and is allowed to be multisampled on Broadwell and earlier.
596 */
597 if (format == ISL_FORMAT_HIZ) {
598 /* On SKL+, HiZ is always single-sampled even when the primary surface
599 * is multisampled. See also isl_surf_get_hiz_surf().
600 */
601 return devinfo->gen <= 8;
602 } else if (devinfo->gen < 7 && isl_format_get_layout(format)->bpb > 64) {
603 return false;
604 } else if (isl_format_is_compressed(format)) {
605 return false;
606 } else if (isl_format_is_yuv(format)) {
607 return false;
608 } else {
609 return true;
610 }
611 }
612
613 /**
614 * Returns true if the two formats are "CCS_E compatible" meaning that you can
615 * render in one format with CCS_E enabled and then texture using the other
616 * format without needing a resolve.
617 *
618 * Note: Even if the formats are compatible, special care must be taken if a
619 * clear color is involved because the encoding of the clear color is heavily
620 * format-dependent.
621 */
622 bool
623 isl_formats_are_ccs_e_compatible(const struct gen_device_info *devinfo,
624 enum isl_format format1,
625 enum isl_format format2)
626 {
627 /* They must support CCS_E */
628 if (!isl_format_supports_ccs_e(devinfo, format1) ||
629 !isl_format_supports_ccs_e(devinfo, format2))
630 return false;
631
632 const struct isl_format_layout *fmtl1 = isl_format_get_layout(format1);
633 const struct isl_format_layout *fmtl2 = isl_format_get_layout(format2);
634
635 /* The compression used by CCS is not dependent on the actual data encoding
636 * of the format but only depends on the bit-layout of the channels.
637 */
638 return fmtl1->channels.r.bits == fmtl2->channels.r.bits &&
639 fmtl1->channels.g.bits == fmtl2->channels.g.bits &&
640 fmtl1->channels.b.bits == fmtl2->channels.b.bits &&
641 fmtl1->channels.a.bits == fmtl2->channels.a.bits;
642 }
643
644 static bool
645 isl_format_has_channel_type(enum isl_format fmt, enum isl_base_type type)
646 {
647 const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
648
649 return fmtl->channels.r.type == type ||
650 fmtl->channels.g.type == type ||
651 fmtl->channels.b.type == type ||
652 fmtl->channels.a.type == type ||
653 fmtl->channels.l.type == type ||
654 fmtl->channels.i.type == type ||
655 fmtl->channels.p.type == type;
656 }
657
658 bool
659 isl_format_has_unorm_channel(enum isl_format fmt)
660 {
661 return isl_format_has_channel_type(fmt, ISL_UNORM);
662 }
663
664 bool
665 isl_format_has_snorm_channel(enum isl_format fmt)
666 {
667 return isl_format_has_channel_type(fmt, ISL_SNORM);
668 }
669
670 bool
671 isl_format_has_ufloat_channel(enum isl_format fmt)
672 {
673 return isl_format_has_channel_type(fmt, ISL_UFLOAT);
674 }
675
676 bool
677 isl_format_has_sfloat_channel(enum isl_format fmt)
678 {
679 return isl_format_has_channel_type(fmt, ISL_SFLOAT);
680 }
681
682 bool
683 isl_format_has_uint_channel(enum isl_format fmt)
684 {
685 return isl_format_has_channel_type(fmt, ISL_UINT);
686 }
687
688 bool
689 isl_format_has_sint_channel(enum isl_format fmt)
690 {
691 return isl_format_has_channel_type(fmt, ISL_SINT);
692 }
693
694 unsigned
695 isl_format_get_num_channels(enum isl_format fmt)
696 {
697 const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
698
699 assert(fmtl->channels.p.bits == 0);
700
701 return (fmtl->channels.r.bits > 0) +
702 (fmtl->channels.g.bits > 0) +
703 (fmtl->channels.b.bits > 0) +
704 (fmtl->channels.a.bits > 0) +
705 (fmtl->channels.l.bits > 0) +
706 (fmtl->channels.i.bits > 0);
707 }
708
709 uint32_t
710 isl_format_get_depth_format(enum isl_format fmt, bool has_stencil)
711 {
712 switch (fmt) {
713 default:
714 unreachable("bad isl depth format");
715 case ISL_FORMAT_R32_FLOAT_X8X24_TYPELESS:
716 assert(has_stencil);
717 return 0; /* D32_FLOAT_S8X24_UINT */
718 case ISL_FORMAT_R32_FLOAT:
719 assert(!has_stencil);
720 return 1; /* D32_FLOAT */
721 case ISL_FORMAT_R24_UNORM_X8_TYPELESS:
722 if (has_stencil) {
723 return 2; /* D24_UNORM_S8_UINT */
724 } else {
725 return 3; /* D24_UNORM_X8_UINT */
726 }
727 case ISL_FORMAT_R16_UNORM:
728 assert(!has_stencil);
729 return 5; /* D16_UNORM */
730 }
731 }
732
733 enum isl_format
734 isl_format_rgb_to_rgba(enum isl_format rgb)
735 {
736 assert(isl_format_is_rgb(rgb));
737
738 switch (rgb) {
739 case ISL_FORMAT_R32G32B32_FLOAT: return ISL_FORMAT_R32G32B32A32_FLOAT;
740 case ISL_FORMAT_R32G32B32_SINT: return ISL_FORMAT_R32G32B32A32_SINT;
741 case ISL_FORMAT_R32G32B32_UINT: return ISL_FORMAT_R32G32B32A32_UINT;
742 case ISL_FORMAT_R32G32B32_UNORM: return ISL_FORMAT_R32G32B32A32_UNORM;
743 case ISL_FORMAT_R32G32B32_SNORM: return ISL_FORMAT_R32G32B32A32_SNORM;
744 case ISL_FORMAT_R32G32B32_SSCALED: return ISL_FORMAT_R32G32B32A32_SSCALED;
745 case ISL_FORMAT_R32G32B32_USCALED: return ISL_FORMAT_R32G32B32A32_USCALED;
746 case ISL_FORMAT_R32G32B32_SFIXED: return ISL_FORMAT_R32G32B32A32_SFIXED;
747 case ISL_FORMAT_R8G8B8_UNORM: return ISL_FORMAT_R8G8B8A8_UNORM;
748 case ISL_FORMAT_R8G8B8_SNORM: return ISL_FORMAT_R8G8B8A8_SNORM;
749 case ISL_FORMAT_R8G8B8_SSCALED: return ISL_FORMAT_R8G8B8A8_SSCALED;
750 case ISL_FORMAT_R8G8B8_USCALED: return ISL_FORMAT_R8G8B8A8_USCALED;
751 case ISL_FORMAT_R16G16B16_FLOAT: return ISL_FORMAT_R16G16B16A16_FLOAT;
752 case ISL_FORMAT_R16G16B16_UNORM: return ISL_FORMAT_R16G16B16A16_UNORM;
753 case ISL_FORMAT_R16G16B16_SNORM: return ISL_FORMAT_R16G16B16A16_SNORM;
754 case ISL_FORMAT_R16G16B16_SSCALED: return ISL_FORMAT_R16G16B16A16_SSCALED;
755 case ISL_FORMAT_R16G16B16_USCALED: return ISL_FORMAT_R16G16B16A16_USCALED;
756 case ISL_FORMAT_R8G8B8_UNORM_SRGB: return ISL_FORMAT_R8G8B8A8_UNORM_SRGB;
757 case ISL_FORMAT_R16G16B16_UINT: return ISL_FORMAT_R16G16B16A16_UINT;
758 case ISL_FORMAT_R16G16B16_SINT: return ISL_FORMAT_R16G16B16A16_SINT;
759 case ISL_FORMAT_R8G8B8_UINT: return ISL_FORMAT_R8G8B8A8_UINT;
760 case ISL_FORMAT_R8G8B8_SINT: return ISL_FORMAT_R8G8B8A8_SINT;
761 default:
762 return ISL_FORMAT_UNSUPPORTED;
763 }
764 }
765
766 enum isl_format
767 isl_format_rgb_to_rgbx(enum isl_format rgb)
768 {
769 assert(isl_format_is_rgb(rgb));
770
771 switch (rgb) {
772 case ISL_FORMAT_R32G32B32_FLOAT:
773 return ISL_FORMAT_R32G32B32X32_FLOAT;
774 case ISL_FORMAT_R16G16B16_UNORM:
775 return ISL_FORMAT_R16G16B16X16_UNORM;
776 case ISL_FORMAT_R16G16B16_FLOAT:
777 return ISL_FORMAT_R16G16B16X16_FLOAT;
778 case ISL_FORMAT_R8G8B8_UNORM:
779 return ISL_FORMAT_R8G8B8X8_UNORM;
780 case ISL_FORMAT_R8G8B8_UNORM_SRGB:
781 return ISL_FORMAT_R8G8B8X8_UNORM_SRGB;
782 default:
783 return ISL_FORMAT_UNSUPPORTED;
784 }
785 }
786
787 enum isl_format
788 isl_format_rgbx_to_rgba(enum isl_format rgbx)
789 {
790 assert(isl_format_is_rgbx(rgbx));
791
792 switch (rgbx) {
793 case ISL_FORMAT_R32G32B32X32_FLOAT:
794 return ISL_FORMAT_R32G32B32A32_FLOAT;
795 case ISL_FORMAT_R16G16B16X16_UNORM:
796 return ISL_FORMAT_R16G16B16A16_UNORM;
797 case ISL_FORMAT_R16G16B16X16_FLOAT:
798 return ISL_FORMAT_R16G16B16A16_FLOAT;
799 case ISL_FORMAT_B8G8R8X8_UNORM:
800 return ISL_FORMAT_B8G8R8A8_UNORM;
801 case ISL_FORMAT_B8G8R8X8_UNORM_SRGB:
802 return ISL_FORMAT_B8G8R8A8_UNORM_SRGB;
803 case ISL_FORMAT_R8G8B8X8_UNORM:
804 return ISL_FORMAT_R8G8B8A8_UNORM;
805 case ISL_FORMAT_R8G8B8X8_UNORM_SRGB:
806 return ISL_FORMAT_R8G8B8A8_UNORM_SRGB;
807 case ISL_FORMAT_B10G10R10X2_UNORM:
808 return ISL_FORMAT_B10G10R10A2_UNORM;
809 case ISL_FORMAT_B5G5R5X1_UNORM:
810 return ISL_FORMAT_B5G5R5A1_UNORM;
811 case ISL_FORMAT_B5G5R5X1_UNORM_SRGB:
812 return ISL_FORMAT_B5G5R5A1_UNORM_SRGB;
813 default:
814 assert(!"Invalid RGBX format");
815 return rgbx;
816 }
817 }
818
819 static inline void
820 pack_channel(const union isl_color_value *value, unsigned i,
821 const struct isl_channel_layout *layout,
822 enum isl_colorspace colorspace,
823 uint32_t data_out[4])
824 {
825 if (layout->type == ISL_VOID)
826 return;
827
828 if (colorspace == ISL_COLORSPACE_SRGB)
829 assert(layout->type == ISL_UNORM);
830
831 uint32_t packed;
832 switch (layout->type) {
833 case ISL_UNORM:
834 if (colorspace == ISL_COLORSPACE_SRGB) {
835 if (layout->bits == 8) {
836 packed = util_format_linear_float_to_srgb_8unorm(value->f32[i]);
837 } else {
838 float srgb = util_format_linear_to_srgb_float(value->f32[i]);
839 packed = _mesa_float_to_unorm(srgb, layout->bits);
840 }
841 } else {
842 packed = _mesa_float_to_unorm(value->f32[i], layout->bits);
843 }
844 break;
845 case ISL_SNORM:
846 packed = _mesa_float_to_snorm(value->f32[i], layout->bits);
847 break;
848 case ISL_SFLOAT:
849 assert(layout->bits == 16 || layout->bits == 32);
850 if (layout->bits == 16) {
851 packed = _mesa_float_to_half(value->f32[i]);
852 } else {
853 packed = value->u32[i];
854 }
855 break;
856 case ISL_UINT:
857 packed = MIN(value->u32[i], MAX_UINT(layout->bits));
858 break;
859 case ISL_SINT:
860 packed = MIN(MAX(value->u32[i], MIN_INT(layout->bits)),
861 MAX_INT(layout->bits));
862 break;
863
864 default:
865 unreachable("Invalid channel type");
866 }
867
868 unsigned dword = layout->start_bit / 32;
869 unsigned bit = layout->start_bit % 32;
870 assert(bit + layout->bits <= 32);
871 data_out[dword] |= (packed & MAX_UINT(layout->bits)) << bit;
872 }
873
874 /**
875 * Take an isl_color_value and pack it into the actual bits as specified by
876 * the isl_format. This function is very slow for a format conversion
877 * function but should be fine for a single pixel worth of data.
878 */
879 void
880 isl_color_value_pack(const union isl_color_value *value,
881 enum isl_format format,
882 uint32_t *data_out)
883 {
884 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
885 assert(fmtl->colorspace == ISL_COLORSPACE_LINEAR ||
886 fmtl->colorspace == ISL_COLORSPACE_SRGB);
887 assert(!isl_format_is_compressed(format));
888
889 memset(data_out, 0, isl_align(fmtl->bpb, 32) / 8);
890
891 if (format == ISL_FORMAT_R9G9B9E5_SHAREDEXP) {
892 data_out[0] = float3_to_rgb9e5(value->f32);
893 return;
894 } else if (format == ISL_FORMAT_R11G11B10_FLOAT) {
895 data_out[0] = float3_to_r11g11b10f(value->f32);
896 return;
897 }
898
899 pack_channel(value, 0, &fmtl->channels.r, fmtl->colorspace, data_out);
900 pack_channel(value, 1, &fmtl->channels.g, fmtl->colorspace, data_out);
901 pack_channel(value, 2, &fmtl->channels.b, fmtl->colorspace, data_out);
902 pack_channel(value, 3, &fmtl->channels.a, ISL_COLORSPACE_LINEAR, data_out);
903 pack_channel(value, 0, &fmtl->channels.l, fmtl->colorspace, data_out);
904 pack_channel(value, 0, &fmtl->channels.i, ISL_COLORSPACE_LINEAR, data_out);
905 assert(fmtl->channels.p.bits == 0);
906 }
907
908 /** Extend an N-bit signed integer to 32 bits */
909 static inline int32_t
910 sign_extend(int32_t x, unsigned bits)
911 {
912 if (bits < 32) {
913 unsigned shift = 32 - bits;
914 return (x << shift) >> shift;
915 } else {
916 return x;
917 }
918 }
919
920 static inline void
921 unpack_channel(union isl_color_value *value,
922 unsigned start, unsigned count,
923 const struct isl_channel_layout *layout,
924 enum isl_colorspace colorspace,
925 const uint32_t *data_in)
926 {
927 if (layout->type == ISL_VOID)
928 return;
929
930 unsigned dword = layout->start_bit / 32;
931 unsigned bit = layout->start_bit % 32;
932 assert(bit + layout->bits <= 32);
933 uint32_t packed = (data_in[dword] >> bit) & MAX_UINT(layout->bits);
934
935 union {
936 uint32_t u32;
937 float f32;
938 } unpacked;
939
940 if (colorspace == ISL_COLORSPACE_SRGB)
941 assert(layout->type == ISL_UNORM);
942
943 switch (layout->type) {
944 case ISL_UNORM:
945 unpacked.f32 = _mesa_unorm_to_float(packed, layout->bits);
946 if (colorspace == ISL_COLORSPACE_SRGB) {
947 if (layout->bits == 8) {
948 unpacked.f32 = util_format_srgb_8unorm_to_linear_float(packed);
949 } else {
950 float srgb = _mesa_unorm_to_float(packed, layout->bits);
951 unpacked.f32 = util_format_srgb_to_linear_float(srgb);
952 }
953 } else {
954 unpacked.f32 = _mesa_unorm_to_float(packed, layout->bits);
955 }
956 break;
957 case ISL_SNORM:
958 unpacked.f32 = _mesa_snorm_to_float(sign_extend(packed, layout->bits),
959 layout->bits);
960 break;
961 case ISL_SFLOAT:
962 assert(layout->bits == 16 || layout->bits == 32);
963 if (layout->bits == 16) {
964 unpacked.f32 = _mesa_half_to_float(packed);
965 } else {
966 unpacked.u32 = packed;
967 }
968 break;
969 case ISL_UINT:
970 unpacked.u32 = packed;
971 break;
972 case ISL_SINT:
973 unpacked.u32 = sign_extend(packed, layout->bits);
974 break;
975
976 default:
977 unreachable("Invalid channel type");
978 }
979
980 for (unsigned i = 0; i < count; i++)
981 value->u32[start + i] = unpacked.u32;
982 }
983
984 /**
985 * Take unpack an isl_color_value from the actual bits as specified by
986 * the isl_format. This function is very slow for a format conversion
987 * function but should be fine for a single pixel worth of data.
988 */
989 void
990 isl_color_value_unpack(union isl_color_value *value,
991 enum isl_format format,
992 const uint32_t data_in[4])
993 {
994 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
995 assert(fmtl->colorspace == ISL_COLORSPACE_LINEAR ||
996 fmtl->colorspace == ISL_COLORSPACE_SRGB);
997 assert(!isl_format_is_compressed(format));
998
999 /* Default to opaque black. */
1000 memset(value, 0, sizeof(*value));
1001 if (isl_format_has_int_channel(format)) {
1002 value->u32[3] = 1u;
1003 } else {
1004 value->f32[3] = 1.0f;
1005 }
1006
1007 if (format == ISL_FORMAT_R9G9B9E5_SHAREDEXP) {
1008 rgb9e5_to_float3(data_in[0], value->f32);
1009 return;
1010 } else if (format == ISL_FORMAT_R11G11B10_FLOAT) {
1011 r11g11b10f_to_float3(data_in[0], value->f32);
1012 return;
1013 }
1014
1015 unpack_channel(value, 0, 1, &fmtl->channels.r, fmtl->colorspace, data_in);
1016 unpack_channel(value, 1, 1, &fmtl->channels.g, fmtl->colorspace, data_in);
1017 unpack_channel(value, 2, 1, &fmtl->channels.b, fmtl->colorspace, data_in);
1018 unpack_channel(value, 3, 1, &fmtl->channels.a, ISL_COLORSPACE_LINEAR, data_in);
1019 unpack_channel(value, 0, 3, &fmtl->channels.l, fmtl->colorspace, data_in);
1020 unpack_channel(value, 0, 4, &fmtl->channels.i, ISL_COLORSPACE_LINEAR, data_in);
1021 assert(fmtl->channels.p.bits == 0);
1022 }