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[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 static bool
378 format_info_exists(enum isl_format format)
379 {
380 assert(format != ISL_FORMAT_UNSUPPORTED);
381 assert(format < ISL_NUM_FORMATS);
382 return format < ARRAY_SIZE(format_info) && format_info[format].exists;
383 }
384
385 bool
386 isl_format_supports_rendering(const struct gen_device_info *devinfo,
387 enum isl_format format)
388 {
389 if (!format_info_exists(format))
390 return false;
391
392 return format_gen(devinfo) >= format_info[format].render_target;
393 }
394
395 bool
396 isl_format_supports_alpha_blending(const struct gen_device_info *devinfo,
397 enum isl_format format)
398 {
399 if (!format_info_exists(format))
400 return false;
401
402 return format_gen(devinfo) >= format_info[format].alpha_blend;
403 }
404
405 bool
406 isl_format_supports_sampling(const struct gen_device_info *devinfo,
407 enum isl_format format)
408 {
409 if (!format_info_exists(format))
410 return false;
411
412 if (devinfo->is_baytrail) {
413 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
414 /* Support for ETC1 and ETC2 exists on Bay Trail even though big-core
415 * GPUs didn't get it until Broadwell.
416 */
417 if (fmtl->txc == ISL_TXC_ETC1 || fmtl->txc == ISL_TXC_ETC2)
418 return true;
419 } else if (devinfo->is_cherryview) {
420 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
421 /* Support for ASTC LDR exists on Cherry View even though big-core
422 * GPUs didn't get it until Skylake.
423 */
424 if (fmtl->txc == ISL_TXC_ASTC)
425 return format < ISL_FORMAT_ASTC_HDR_2D_4X4_FLT16;
426 } else if (gen_device_info_is_9lp(devinfo)) {
427 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
428 /* Support for ASTC HDR exists on Broxton even though big-core
429 * GPUs didn't get it until Cannonlake.
430 */
431 if (fmtl->txc == ISL_TXC_ASTC)
432 return true;
433 }
434
435 return format_gen(devinfo) >= format_info[format].sampling;
436 }
437
438 bool
439 isl_format_supports_filtering(const struct gen_device_info *devinfo,
440 enum isl_format format)
441 {
442 if (!format_info_exists(format))
443 return false;
444
445 if (devinfo->is_baytrail) {
446 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
447 /* Support for ETC1 and ETC2 exists on Bay Trail even though big-core
448 * GPUs didn't get it until Broadwell.
449 */
450 if (fmtl->txc == ISL_TXC_ETC1 || fmtl->txc == ISL_TXC_ETC2)
451 return true;
452 } else if (devinfo->is_cherryview) {
453 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
454 /* Support for ASTC LDR exists on Cherry View even though big-core
455 * GPUs didn't get it until Skylake.
456 */
457 if (fmtl->txc == ISL_TXC_ASTC)
458 return format < ISL_FORMAT_ASTC_HDR_2D_4X4_FLT16;
459 } else if (gen_device_info_is_9lp(devinfo)) {
460 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
461 /* Support for ASTC HDR exists on Broxton even though big-core
462 * GPUs didn't get it until Cannonlake.
463 */
464 if (fmtl->txc == ISL_TXC_ASTC)
465 return true;
466 }
467
468 return format_gen(devinfo) >= format_info[format].filtering;
469 }
470
471 bool
472 isl_format_supports_vertex_fetch(const struct gen_device_info *devinfo,
473 enum isl_format format)
474 {
475 if (!format_info_exists(format))
476 return false;
477
478 /* For vertex fetch, Bay Trail supports the same set of formats as Haswell
479 * but is a superset of Ivy Bridge.
480 */
481 if (devinfo->is_baytrail)
482 return 75 >= format_info[format].input_vb;
483
484 return format_gen(devinfo) >= format_info[format].input_vb;
485 }
486
487 /**
488 * Returns true if the given format can support typed writes.
489 */
490 bool
491 isl_format_supports_typed_writes(const struct gen_device_info *devinfo,
492 enum isl_format format)
493 {
494 if (!format_info_exists(format))
495 return false;
496
497 return format_gen(devinfo) >= format_info[format].typed_write;
498 }
499
500
501 /**
502 * Returns true if the given format can support typed reads with format
503 * conversion fully handled by hardware. On Sky Lake, all formats which are
504 * supported for typed writes also support typed reads but some of them return
505 * the raw image data and don't provide format conversion.
506 *
507 * For anyone looking to find this data in the PRM, the easiest way to find
508 * format tables is to search for R11G11B10. There are only a few
509 * occurrences.
510 */
511 bool
512 isl_format_supports_typed_reads(const struct gen_device_info *devinfo,
513 enum isl_format format)
514 {
515 if (!format_info_exists(format))
516 return false;
517
518 return format_gen(devinfo) >= format_info[format].typed_read;
519 }
520
521 /**
522 * Returns true if the given format can support single-sample fast clears.
523 * This function only checks the format. In order to determine if a surface
524 * supports CCS_E, several other factors need to be considered such as tiling
525 * and sample count. See isl_surf_get_ccs_surf for details.
526 */
527 bool
528 isl_format_supports_ccs_d(const struct gen_device_info *devinfo,
529 enum isl_format format)
530 {
531 /* Fast clears were first added on Ivy Bridge */
532 if (devinfo->gen < 7)
533 return false;
534
535 if (!isl_format_supports_rendering(devinfo, format))
536 return false;
537
538 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
539
540 return fmtl->bpb == 32 || fmtl->bpb == 64 || fmtl->bpb == 128;
541 }
542
543 /**
544 * Returns true if the given format can support single-sample color
545 * compression. This function only checks the format. In order to determine
546 * if a surface supports CCS_E, several other factors need to be considered
547 * such as tiling and sample count. See isl_surf_get_ccs_surf for details.
548 */
549 bool
550 isl_format_supports_ccs_e(const struct gen_device_info *devinfo,
551 enum isl_format format)
552 {
553 if (!format_info_exists(format))
554 return false;
555
556 /* For simplicity, only report that a format supports CCS_E if blorp can
557 * perform bit-for-bit copies with an image of that format while compressed.
558 * This allows ISL users to avoid having to resolve the image before
559 * performing such a copy. We may want to change this behavior in the
560 * future.
561 *
562 * R11G11B10_FLOAT has no equivalent UINT format. Given how blorp_copy
563 * currently works, bit-for-bit copy operations are not possible without an
564 * intermediate resolve.
565 */
566 if (format == ISL_FORMAT_R11G11B10_FLOAT)
567 return false;
568
569 return format_gen(devinfo) >= format_info[format].ccs_e;
570 }
571
572 bool
573 isl_format_supports_multisampling(const struct gen_device_info *devinfo,
574 enum isl_format format)
575 {
576 /* From the Sandybridge PRM, Volume 4 Part 1 p72, SURFACE_STATE, Surface
577 * Format:
578 *
579 * If Number of Multisamples is set to a value other than
580 * MULTISAMPLECOUNT_1, this field cannot be set to the following
581 * formats:
582 *
583 * - any format with greater than 64 bits per element
584 * - any compressed texture format (BC*)
585 * - any YCRCB* format
586 *
587 * The restriction on the format's size is removed on Broadwell. Moreover,
588 * empirically it looks that even IvyBridge can handle multisampled surfaces
589 * with format sizes all the way to 128-bits (RGBA32F, RGBA32I, RGBA32UI).
590 *
591 * Also, there is an exception for HiZ which we treat as a compressed
592 * format and is allowed to be multisampled on Broadwell and earlier.
593 */
594 if (format == ISL_FORMAT_HIZ) {
595 /* On SKL+, HiZ is always single-sampled even when the primary surface
596 * is multisampled. See also isl_surf_get_hiz_surf().
597 */
598 return devinfo->gen <= 8;
599 } else if (devinfo->gen < 7 && isl_format_get_layout(format)->bpb > 64) {
600 return false;
601 } else if (isl_format_is_compressed(format)) {
602 return false;
603 } else if (isl_format_is_yuv(format)) {
604 return false;
605 } else {
606 return true;
607 }
608 }
609
610 /**
611 * Returns true if the two formats are "CCS_E compatible" meaning that you can
612 * render in one format with CCS_E enabled and then texture using the other
613 * format without needing a resolve.
614 *
615 * Note: Even if the formats are compatible, special care must be taken if a
616 * clear color is involved because the encoding of the clear color is heavily
617 * format-dependent.
618 */
619 bool
620 isl_formats_are_ccs_e_compatible(const struct gen_device_info *devinfo,
621 enum isl_format format1,
622 enum isl_format format2)
623 {
624 /* They must support CCS_E */
625 if (!isl_format_supports_ccs_e(devinfo, format1) ||
626 !isl_format_supports_ccs_e(devinfo, format2))
627 return false;
628
629 const struct isl_format_layout *fmtl1 = isl_format_get_layout(format1);
630 const struct isl_format_layout *fmtl2 = isl_format_get_layout(format2);
631
632 /* The compression used by CCS is not dependent on the actual data encoding
633 * of the format but only depends on the bit-layout of the channels.
634 */
635 return fmtl1->channels.r.bits == fmtl2->channels.r.bits &&
636 fmtl1->channels.g.bits == fmtl2->channels.g.bits &&
637 fmtl1->channels.b.bits == fmtl2->channels.b.bits &&
638 fmtl1->channels.a.bits == fmtl2->channels.a.bits;
639 }
640
641 static bool
642 isl_format_has_channel_type(enum isl_format fmt, enum isl_base_type type)
643 {
644 const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
645
646 return fmtl->channels.r.type == type ||
647 fmtl->channels.g.type == type ||
648 fmtl->channels.b.type == type ||
649 fmtl->channels.a.type == type ||
650 fmtl->channels.l.type == type ||
651 fmtl->channels.i.type == type ||
652 fmtl->channels.p.type == type;
653 }
654
655 bool
656 isl_format_has_unorm_channel(enum isl_format fmt)
657 {
658 return isl_format_has_channel_type(fmt, ISL_UNORM);
659 }
660
661 bool
662 isl_format_has_snorm_channel(enum isl_format fmt)
663 {
664 return isl_format_has_channel_type(fmt, ISL_SNORM);
665 }
666
667 bool
668 isl_format_has_ufloat_channel(enum isl_format fmt)
669 {
670 return isl_format_has_channel_type(fmt, ISL_UFLOAT);
671 }
672
673 bool
674 isl_format_has_sfloat_channel(enum isl_format fmt)
675 {
676 return isl_format_has_channel_type(fmt, ISL_SFLOAT);
677 }
678
679 bool
680 isl_format_has_uint_channel(enum isl_format fmt)
681 {
682 return isl_format_has_channel_type(fmt, ISL_UINT);
683 }
684
685 bool
686 isl_format_has_sint_channel(enum isl_format fmt)
687 {
688 return isl_format_has_channel_type(fmt, ISL_SINT);
689 }
690
691 bool
692 isl_format_has_color_component(enum isl_format fmt, int component)
693 {
694 const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
695 const uint8_t intensity = fmtl->channels.i.bits;
696 const uint8_t luminance = fmtl->channels.l.bits;
697
698 switch (component) {
699 case 0:
700 return (fmtl->channels.r.bits + intensity + luminance) > 0;
701 case 1:
702 return (fmtl->channels.g.bits + intensity + luminance) > 0;
703 case 2:
704 return (fmtl->channels.b.bits + intensity + luminance) > 0;
705 case 3:
706 return (fmtl->channels.a.bits + intensity) > 0;
707 default:
708 assert(!"Invalid color component: must be 0..3");
709 return false;
710 }
711 }
712
713 unsigned
714 isl_format_get_num_channels(enum isl_format fmt)
715 {
716 const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
717
718 assert(fmtl->channels.p.bits == 0);
719
720 return (fmtl->channels.r.bits > 0) +
721 (fmtl->channels.g.bits > 0) +
722 (fmtl->channels.b.bits > 0) +
723 (fmtl->channels.a.bits > 0) +
724 (fmtl->channels.l.bits > 0) +
725 (fmtl->channels.i.bits > 0);
726 }
727
728 uint32_t
729 isl_format_get_depth_format(enum isl_format fmt, bool has_stencil)
730 {
731 switch (fmt) {
732 default:
733 unreachable("bad isl depth format");
734 case ISL_FORMAT_R32_FLOAT_X8X24_TYPELESS:
735 assert(has_stencil);
736 return 0; /* D32_FLOAT_S8X24_UINT */
737 case ISL_FORMAT_R32_FLOAT:
738 assert(!has_stencil);
739 return 1; /* D32_FLOAT */
740 case ISL_FORMAT_R24_UNORM_X8_TYPELESS:
741 if (has_stencil) {
742 return 2; /* D24_UNORM_S8_UINT */
743 } else {
744 return 3; /* D24_UNORM_X8_UINT */
745 }
746 case ISL_FORMAT_R16_UNORM:
747 assert(!has_stencil);
748 return 5; /* D16_UNORM */
749 }
750 }
751
752 enum isl_format
753 isl_format_rgb_to_rgba(enum isl_format rgb)
754 {
755 assert(isl_format_is_rgb(rgb));
756
757 switch (rgb) {
758 case ISL_FORMAT_R32G32B32_FLOAT: return ISL_FORMAT_R32G32B32A32_FLOAT;
759 case ISL_FORMAT_R32G32B32_SINT: return ISL_FORMAT_R32G32B32A32_SINT;
760 case ISL_FORMAT_R32G32B32_UINT: return ISL_FORMAT_R32G32B32A32_UINT;
761 case ISL_FORMAT_R32G32B32_UNORM: return ISL_FORMAT_R32G32B32A32_UNORM;
762 case ISL_FORMAT_R32G32B32_SNORM: return ISL_FORMAT_R32G32B32A32_SNORM;
763 case ISL_FORMAT_R32G32B32_SSCALED: return ISL_FORMAT_R32G32B32A32_SSCALED;
764 case ISL_FORMAT_R32G32B32_USCALED: return ISL_FORMAT_R32G32B32A32_USCALED;
765 case ISL_FORMAT_R32G32B32_SFIXED: return ISL_FORMAT_R32G32B32A32_SFIXED;
766 case ISL_FORMAT_R8G8B8_UNORM: return ISL_FORMAT_R8G8B8A8_UNORM;
767 case ISL_FORMAT_R8G8B8_SNORM: return ISL_FORMAT_R8G8B8A8_SNORM;
768 case ISL_FORMAT_R8G8B8_SSCALED: return ISL_FORMAT_R8G8B8A8_SSCALED;
769 case ISL_FORMAT_R8G8B8_USCALED: return ISL_FORMAT_R8G8B8A8_USCALED;
770 case ISL_FORMAT_R16G16B16_FLOAT: return ISL_FORMAT_R16G16B16A16_FLOAT;
771 case ISL_FORMAT_R16G16B16_UNORM: return ISL_FORMAT_R16G16B16A16_UNORM;
772 case ISL_FORMAT_R16G16B16_SNORM: return ISL_FORMAT_R16G16B16A16_SNORM;
773 case ISL_FORMAT_R16G16B16_SSCALED: return ISL_FORMAT_R16G16B16A16_SSCALED;
774 case ISL_FORMAT_R16G16B16_USCALED: return ISL_FORMAT_R16G16B16A16_USCALED;
775 case ISL_FORMAT_R8G8B8_UNORM_SRGB: return ISL_FORMAT_R8G8B8A8_UNORM_SRGB;
776 case ISL_FORMAT_R16G16B16_UINT: return ISL_FORMAT_R16G16B16A16_UINT;
777 case ISL_FORMAT_R16G16B16_SINT: return ISL_FORMAT_R16G16B16A16_SINT;
778 case ISL_FORMAT_R8G8B8_UINT: return ISL_FORMAT_R8G8B8A8_UINT;
779 case ISL_FORMAT_R8G8B8_SINT: return ISL_FORMAT_R8G8B8A8_SINT;
780 default:
781 return ISL_FORMAT_UNSUPPORTED;
782 }
783 }
784
785 enum isl_format
786 isl_format_rgb_to_rgbx(enum isl_format rgb)
787 {
788 assert(isl_format_is_rgb(rgb));
789
790 switch (rgb) {
791 case ISL_FORMAT_R32G32B32_FLOAT:
792 return ISL_FORMAT_R32G32B32X32_FLOAT;
793 case ISL_FORMAT_R16G16B16_UNORM:
794 return ISL_FORMAT_R16G16B16X16_UNORM;
795 case ISL_FORMAT_R16G16B16_FLOAT:
796 return ISL_FORMAT_R16G16B16X16_FLOAT;
797 case ISL_FORMAT_R8G8B8_UNORM:
798 return ISL_FORMAT_R8G8B8X8_UNORM;
799 case ISL_FORMAT_R8G8B8_UNORM_SRGB:
800 return ISL_FORMAT_R8G8B8X8_UNORM_SRGB;
801 default:
802 return ISL_FORMAT_UNSUPPORTED;
803 }
804 }
805
806 enum isl_format
807 isl_format_rgbx_to_rgba(enum isl_format rgbx)
808 {
809 assert(isl_format_is_rgbx(rgbx));
810
811 switch (rgbx) {
812 case ISL_FORMAT_R32G32B32X32_FLOAT:
813 return ISL_FORMAT_R32G32B32A32_FLOAT;
814 case ISL_FORMAT_R16G16B16X16_UNORM:
815 return ISL_FORMAT_R16G16B16A16_UNORM;
816 case ISL_FORMAT_R16G16B16X16_FLOAT:
817 return ISL_FORMAT_R16G16B16A16_FLOAT;
818 case ISL_FORMAT_B8G8R8X8_UNORM:
819 return ISL_FORMAT_B8G8R8A8_UNORM;
820 case ISL_FORMAT_B8G8R8X8_UNORM_SRGB:
821 return ISL_FORMAT_B8G8R8A8_UNORM_SRGB;
822 case ISL_FORMAT_R8G8B8X8_UNORM:
823 return ISL_FORMAT_R8G8B8A8_UNORM;
824 case ISL_FORMAT_R8G8B8X8_UNORM_SRGB:
825 return ISL_FORMAT_R8G8B8A8_UNORM_SRGB;
826 case ISL_FORMAT_B10G10R10X2_UNORM:
827 return ISL_FORMAT_B10G10R10A2_UNORM;
828 case ISL_FORMAT_B5G5R5X1_UNORM:
829 return ISL_FORMAT_B5G5R5A1_UNORM;
830 case ISL_FORMAT_B5G5R5X1_UNORM_SRGB:
831 return ISL_FORMAT_B5G5R5A1_UNORM_SRGB;
832 default:
833 assert(!"Invalid RGBX format");
834 return rgbx;
835 }
836 }
837
838 static inline void
839 pack_channel(const union isl_color_value *value, unsigned i,
840 const struct isl_channel_layout *layout,
841 enum isl_colorspace colorspace,
842 uint32_t data_out[4])
843 {
844 if (layout->type == ISL_VOID)
845 return;
846
847 if (colorspace == ISL_COLORSPACE_SRGB)
848 assert(layout->type == ISL_UNORM);
849
850 uint32_t packed;
851 switch (layout->type) {
852 case ISL_UNORM:
853 if (colorspace == ISL_COLORSPACE_SRGB) {
854 if (layout->bits == 8) {
855 packed = util_format_linear_float_to_srgb_8unorm(value->f32[i]);
856 } else {
857 float srgb = util_format_linear_to_srgb_float(value->f32[i]);
858 packed = _mesa_float_to_unorm(srgb, layout->bits);
859 }
860 } else {
861 packed = _mesa_float_to_unorm(value->f32[i], layout->bits);
862 }
863 break;
864 case ISL_SNORM:
865 packed = _mesa_float_to_snorm(value->f32[i], layout->bits);
866 break;
867 case ISL_SFLOAT:
868 assert(layout->bits == 16 || layout->bits == 32);
869 if (layout->bits == 16) {
870 packed = _mesa_float_to_half(value->f32[i]);
871 } else {
872 packed = value->u32[i];
873 }
874 break;
875 case ISL_UINT:
876 packed = MIN(value->u32[i], MAX_UINT(layout->bits));
877 break;
878 case ISL_SINT:
879 packed = MIN(MAX(value->u32[i], MIN_INT(layout->bits)),
880 MAX_INT(layout->bits));
881 break;
882
883 default:
884 unreachable("Invalid channel type");
885 }
886
887 unsigned dword = layout->start_bit / 32;
888 unsigned bit = layout->start_bit % 32;
889 assert(bit + layout->bits <= 32);
890 data_out[dword] |= (packed & MAX_UINT(layout->bits)) << bit;
891 }
892
893 /**
894 * Take an isl_color_value and pack it into the actual bits as specified by
895 * the isl_format. This function is very slow for a format conversion
896 * function but should be fine for a single pixel worth of data.
897 */
898 void
899 isl_color_value_pack(const union isl_color_value *value,
900 enum isl_format format,
901 uint32_t *data_out)
902 {
903 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
904 assert(fmtl->colorspace == ISL_COLORSPACE_LINEAR ||
905 fmtl->colorspace == ISL_COLORSPACE_SRGB);
906 assert(!isl_format_is_compressed(format));
907
908 memset(data_out, 0, isl_align(fmtl->bpb, 32) / 8);
909
910 if (format == ISL_FORMAT_R9G9B9E5_SHAREDEXP) {
911 data_out[0] = float3_to_rgb9e5(value->f32);
912 return;
913 } else if (format == ISL_FORMAT_R11G11B10_FLOAT) {
914 data_out[0] = float3_to_r11g11b10f(value->f32);
915 return;
916 }
917
918 pack_channel(value, 0, &fmtl->channels.r, fmtl->colorspace, data_out);
919 pack_channel(value, 1, &fmtl->channels.g, fmtl->colorspace, data_out);
920 pack_channel(value, 2, &fmtl->channels.b, fmtl->colorspace, data_out);
921 pack_channel(value, 3, &fmtl->channels.a, ISL_COLORSPACE_LINEAR, data_out);
922 pack_channel(value, 0, &fmtl->channels.l, fmtl->colorspace, data_out);
923 pack_channel(value, 0, &fmtl->channels.i, ISL_COLORSPACE_LINEAR, data_out);
924 assert(fmtl->channels.p.bits == 0);
925 }
926
927 /** Extend an N-bit signed integer to 32 bits */
928 static inline int32_t
929 sign_extend(int32_t x, unsigned bits)
930 {
931 if (bits < 32) {
932 unsigned shift = 32 - bits;
933 return (x << shift) >> shift;
934 } else {
935 return x;
936 }
937 }
938
939 static inline void
940 unpack_channel(union isl_color_value *value,
941 unsigned start, unsigned count,
942 const struct isl_channel_layout *layout,
943 enum isl_colorspace colorspace,
944 const uint32_t *data_in)
945 {
946 if (layout->type == ISL_VOID)
947 return;
948
949 unsigned dword = layout->start_bit / 32;
950 unsigned bit = layout->start_bit % 32;
951 assert(bit + layout->bits <= 32);
952 uint32_t packed = (data_in[dword] >> bit) & MAX_UINT(layout->bits);
953
954 union {
955 uint32_t u32;
956 float f32;
957 } unpacked;
958
959 if (colorspace == ISL_COLORSPACE_SRGB)
960 assert(layout->type == ISL_UNORM);
961
962 switch (layout->type) {
963 case ISL_UNORM:
964 unpacked.f32 = _mesa_unorm_to_float(packed, layout->bits);
965 if (colorspace == ISL_COLORSPACE_SRGB) {
966 if (layout->bits == 8) {
967 unpacked.f32 = util_format_srgb_8unorm_to_linear_float(packed);
968 } else {
969 float srgb = _mesa_unorm_to_float(packed, layout->bits);
970 unpacked.f32 = util_format_srgb_to_linear_float(srgb);
971 }
972 } else {
973 unpacked.f32 = _mesa_unorm_to_float(packed, layout->bits);
974 }
975 break;
976 case ISL_SNORM:
977 unpacked.f32 = _mesa_snorm_to_float(sign_extend(packed, layout->bits),
978 layout->bits);
979 break;
980 case ISL_SFLOAT:
981 assert(layout->bits == 16 || layout->bits == 32);
982 if (layout->bits == 16) {
983 unpacked.f32 = _mesa_half_to_float(packed);
984 } else {
985 unpacked.u32 = packed;
986 }
987 break;
988 case ISL_UINT:
989 unpacked.u32 = packed;
990 break;
991 case ISL_SINT:
992 unpacked.u32 = sign_extend(packed, layout->bits);
993 break;
994
995 default:
996 unreachable("Invalid channel type");
997 }
998
999 for (unsigned i = 0; i < count; i++)
1000 value->u32[start + i] = unpacked.u32;
1001 }
1002
1003 /**
1004 * Take unpack an isl_color_value from the actual bits as specified by
1005 * the isl_format. This function is very slow for a format conversion
1006 * function but should be fine for a single pixel worth of data.
1007 */
1008 void
1009 isl_color_value_unpack(union isl_color_value *value,
1010 enum isl_format format,
1011 const uint32_t data_in[4])
1012 {
1013 const struct isl_format_layout *fmtl = isl_format_get_layout(format);
1014 assert(fmtl->colorspace == ISL_COLORSPACE_LINEAR ||
1015 fmtl->colorspace == ISL_COLORSPACE_SRGB);
1016 assert(!isl_format_is_compressed(format));
1017
1018 /* Default to opaque black. */
1019 memset(value, 0, sizeof(*value));
1020 if (isl_format_has_int_channel(format)) {
1021 value->u32[3] = 1u;
1022 } else {
1023 value->f32[3] = 1.0f;
1024 }
1025
1026 if (format == ISL_FORMAT_R9G9B9E5_SHAREDEXP) {
1027 rgb9e5_to_float3(data_in[0], value->f32);
1028 return;
1029 } else if (format == ISL_FORMAT_R11G11B10_FLOAT) {
1030 r11g11b10f_to_float3(data_in[0], value->f32);
1031 return;
1032 }
1033
1034 unpack_channel(value, 0, 1, &fmtl->channels.r, fmtl->colorspace, data_in);
1035 unpack_channel(value, 1, 1, &fmtl->channels.g, fmtl->colorspace, data_in);
1036 unpack_channel(value, 2, 1, &fmtl->channels.b, fmtl->colorspace, data_in);
1037 unpack_channel(value, 3, 1, &fmtl->channels.a, ISL_COLORSPACE_LINEAR, data_in);
1038 unpack_channel(value, 0, 3, &fmtl->channels.l, fmtl->colorspace, data_in);
1039 unpack_channel(value, 0, 4, &fmtl->channels.i, ISL_COLORSPACE_LINEAR, data_in);
1040 assert(fmtl->channels.p.bits == 0);
1041 }