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Merge remote-tracking branch 'mesa-public/master' into vulkan
[mesa.git] / src / mesa / drivers / dri / i965 / brw_surface_formats.c
1 /*
2 * Copyright © 2011 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 #include "main/context.h"
24 #include "main/mtypes.h"
25
26 #include "brw_context.h"
27 #include "brw_state.h"
28 #include "brw_defines.h"
29 #include "brw_wm.h"
30
31 struct surface_format_info {
32 bool exists;
33 int sampling;
34 int filtering;
35 int shadow_compare;
36 int chroma_key;
37 int render_target;
38 int alpha_blend;
39 int input_vb;
40 int streamed_output_vb;
41 int color_processing;
42 const char *name;
43 };
44
45 /* This macro allows us to write the table almost as it appears in the PRM,
46 * while restructuring it to turn it into the C code we want.
47 */
48 #define SF(sampl, filt, shad, ck, rt, ab, vb, so, color, sf) \
49 [BRW_SURFACEFORMAT_##sf] = { true, sampl, filt, shad, ck, rt, ab, vb, so, color, #sf},
50
51 #define Y 0
52 #define x 999
53 /**
54 * This is the table of support for surface (texture, renderbuffer, and vertex
55 * buffer, but not depthbuffer) formats across the various hardware generations.
56 *
57 * The table is formatted to match the documentation, except that the docs have
58 * this ridiculous mapping of Y[*+~^#&] for "supported on DevWhatever". To put
59 * it in our table, here's the mapping:
60 *
61 * Y*: 45
62 * Y+: 45 (g45/gm45)
63 * Y~: 50 (gen5)
64 * Y^: 60 (gen6)
65 * Y#: 70 (gen7)
66 *
67 * The abbreviations in the header below are:
68 * smpl - Sampling Engine
69 * filt - Sampling Engine Filtering
70 * shad - Sampling Engine Shadow Map
71 * CK - Sampling Engine Chroma Key
72 * RT - Render Target
73 * AB - Alpha Blend Render Target
74 * VB - Input Vertex Buffer
75 * SO - Steamed Output Vertex Buffers (transform feedback)
76 * color - Color Processing
77 * sf - Surface Format
78 *
79 * See page 88 of the Sandybridge PRM VOL4_Part1 PDF.
80 *
81 * As of Ivybridge, the columns are no longer in that table and the
82 * information can be found spread across:
83 *
84 * - VOL2_Part1 section 2.5.11 Format Conversion (vertex fetch).
85 * - VOL4_Part1 section 2.12.2.1.2 Sampler Output Channel Mapping.
86 * - VOL4_Part1 section 3.9.11 Render Target Write.
87 */
88 const struct surface_format_info surface_formats[] = {
89 /* smpl filt shad CK RT AB VB SO color */
90 SF( Y, 50, x, x, Y, Y, Y, Y, x, R32G32B32A32_FLOAT)
91 SF( Y, x, x, x, Y, x, Y, Y, x, R32G32B32A32_SINT)
92 SF( Y, x, x, x, Y, x, Y, Y, x, R32G32B32A32_UINT)
93 SF( x, x, x, x, x, x, Y, x, x, R32G32B32A32_UNORM)
94 SF( x, x, x, x, x, x, Y, x, x, R32G32B32A32_SNORM)
95 SF( x, x, x, x, x, x, Y, x, x, R64G64_FLOAT)
96 SF( Y, 50, x, x, x, x, x, x, x, R32G32B32X32_FLOAT)
97 SF( x, x, x, x, x, x, Y, x, x, R32G32B32A32_SSCALED)
98 SF( x, x, x, x, x, x, Y, x, x, R32G32B32A32_USCALED)
99 SF( x, x, x, x, x, x, x, x, x, R32G32B32A32_SFIXED)
100 SF( x, x, x, x, x, x, x, x, x, R64G64_PASSTHRU)
101 SF( Y, 50, x, x, x, x, Y, Y, x, R32G32B32_FLOAT)
102 SF( Y, x, x, x, x, x, Y, Y, x, R32G32B32_SINT)
103 SF( Y, x, x, x, x, x, Y, Y, x, R32G32B32_UINT)
104 SF( x, x, x, x, x, x, Y, x, x, R32G32B32_UNORM)
105 SF( x, x, x, x, x, x, Y, x, x, R32G32B32_SNORM)
106 SF( x, x, x, x, x, x, Y, x, x, R32G32B32_SSCALED)
107 SF( x, x, x, x, x, x, Y, x, x, R32G32B32_USCALED)
108 SF( x, x, x, x, x, x, x, x, x, R32G32B32_SFIXED)
109 SF( Y, Y, x, x, Y, 45, Y, x, 60, R16G16B16A16_UNORM)
110 SF( Y, Y, x, x, Y, 60, Y, x, x, R16G16B16A16_SNORM)
111 SF( Y, x, x, x, Y, x, Y, x, x, R16G16B16A16_SINT)
112 SF( Y, x, x, x, Y, x, Y, x, x, R16G16B16A16_UINT)
113 SF( Y, Y, x, x, Y, Y, Y, x, x, R16G16B16A16_FLOAT)
114 SF( Y, 50, x, x, Y, Y, Y, Y, x, R32G32_FLOAT)
115 SF( Y, 70, x, x, Y, Y, Y, Y, x, R32G32_FLOAT_LD)
116 SF( Y, x, x, x, Y, x, Y, Y, x, R32G32_SINT)
117 SF( Y, x, x, x, Y, x, Y, Y, x, R32G32_UINT)
118 SF( Y, 50, Y, x, x, x, x, x, x, R32_FLOAT_X8X24_TYPELESS)
119 SF( Y, x, x, x, x, x, x, x, x, X32_TYPELESS_G8X24_UINT)
120 SF( Y, 50, x, x, x, x, x, x, x, L32A32_FLOAT)
121 SF( x, x, x, x, x, x, Y, x, x, R32G32_UNORM)
122 SF( x, x, x, x, x, x, Y, x, x, R32G32_SNORM)
123 SF( x, x, x, x, x, x, Y, x, x, R64_FLOAT)
124 SF( Y, Y, x, x, x, x, x, x, x, R16G16B16X16_UNORM)
125 SF( Y, Y, x, x, x, x, x, x, x, R16G16B16X16_FLOAT)
126 SF( Y, 50, x, x, x, x, x, x, x, A32X32_FLOAT)
127 SF( Y, 50, x, x, x, x, x, x, x, L32X32_FLOAT)
128 SF( Y, 50, x, x, x, x, x, x, x, I32X32_FLOAT)
129 SF( x, x, x, x, x, x, Y, x, x, R16G16B16A16_SSCALED)
130 SF( x, x, x, x, x, x, Y, x, x, R16G16B16A16_USCALED)
131 SF( x, x, x, x, x, x, Y, x, x, R32G32_SSCALED)
132 SF( x, x, x, x, x, x, Y, x, x, R32G32_USCALED)
133 SF( x, x, x, x, x, x, x, x, x, R32G32_SFIXED)
134 SF( x, x, x, x, x, x, x, x, x, R64_PASSTHRU)
135 SF( Y, Y, x, Y, Y, Y, Y, x, 60, B8G8R8A8_UNORM)
136 SF( Y, Y, x, x, Y, Y, x, x, x, B8G8R8A8_UNORM_SRGB)
137 /* smpl filt shad CK RT AB VB SO color */
138 SF( Y, Y, x, x, Y, Y, Y, x, 60, R10G10B10A2_UNORM)
139 SF( Y, Y, x, x, x, x, x, x, 60, R10G10B10A2_UNORM_SRGB)
140 SF( Y, x, x, x, Y, x, Y, x, x, R10G10B10A2_UINT)
141 SF( Y, Y, x, x, x, Y, Y, x, x, R10G10B10_SNORM_A2_UNORM)
142 SF( Y, Y, x, x, Y, Y, Y, x, 60, R8G8B8A8_UNORM)
143 SF( Y, Y, x, x, Y, Y, x, x, 60, R8G8B8A8_UNORM_SRGB)
144 SF( Y, Y, x, x, Y, 60, Y, x, x, R8G8B8A8_SNORM)
145 SF( Y, x, x, x, Y, x, Y, x, x, R8G8B8A8_SINT)
146 SF( Y, x, x, x, Y, x, Y, x, x, R8G8B8A8_UINT)
147 SF( Y, Y, x, x, Y, 45, Y, x, x, R16G16_UNORM)
148 SF( Y, Y, x, x, Y, 60, Y, x, x, R16G16_SNORM)
149 SF( Y, x, x, x, Y, x, Y, x, x, R16G16_SINT)
150 SF( Y, x, x, x, Y, x, Y, x, x, R16G16_UINT)
151 SF( Y, Y, x, x, Y, Y, Y, x, x, R16G16_FLOAT)
152 SF( Y, Y, x, x, Y, Y, x, x, 60, B10G10R10A2_UNORM)
153 SF( Y, Y, x, x, Y, Y, x, x, 60, B10G10R10A2_UNORM_SRGB)
154 SF( Y, Y, x, x, Y, Y, Y, x, x, R11G11B10_FLOAT)
155 SF( Y, x, x, x, Y, x, Y, Y, x, R32_SINT)
156 SF( Y, x, x, x, Y, x, Y, Y, x, R32_UINT)
157 SF( Y, 50, Y, x, Y, Y, Y, Y, x, R32_FLOAT)
158 SF( Y, 50, Y, x, x, x, x, x, x, R24_UNORM_X8_TYPELESS)
159 SF( Y, x, x, x, x, x, x, x, x, X24_TYPELESS_G8_UINT)
160 SF( Y, Y, x, x, x, x, x, x, x, L16A16_UNORM)
161 SF( Y, 50, Y, x, x, x, x, x, x, I24X8_UNORM)
162 SF( Y, 50, Y, x, x, x, x, x, x, L24X8_UNORM)
163 SF( Y, 50, Y, x, x, x, x, x, x, A24X8_UNORM)
164 SF( Y, 50, Y, x, x, x, x, x, x, I32_FLOAT)
165 SF( Y, 50, Y, x, x, x, x, x, x, L32_FLOAT)
166 SF( Y, 50, Y, x, x, x, x, x, x, A32_FLOAT)
167 SF( Y, Y, x, Y, x, x, x, x, 60, B8G8R8X8_UNORM)
168 SF( Y, Y, x, x, x, x, x, x, x, B8G8R8X8_UNORM_SRGB)
169 SF( Y, Y, x, x, x, x, x, x, x, R8G8B8X8_UNORM)
170 SF( Y, Y, x, x, x, x, x, x, x, R8G8B8X8_UNORM_SRGB)
171 SF( Y, Y, x, x, x, x, x, x, x, R9G9B9E5_SHAREDEXP)
172 SF( Y, Y, x, x, x, x, x, x, x, B10G10R10X2_UNORM)
173 SF( Y, Y, x, x, x, x, x, x, x, L16A16_FLOAT)
174 SF( x, x, x, x, x, x, Y, x, x, R32_UNORM)
175 SF( x, x, x, x, x, x, Y, x, x, R32_SNORM)
176 /* smpl filt shad CK RT AB VB SO color */
177 SF( x, x, x, x, x, x, Y, x, x, R10G10B10X2_USCALED)
178 SF( x, x, x, x, x, x, Y, x, x, R8G8B8A8_SSCALED)
179 SF( x, x, x, x, x, x, Y, x, x, R8G8B8A8_USCALED)
180 SF( x, x, x, x, x, x, Y, x, x, R16G16_SSCALED)
181 SF( x, x, x, x, x, x, Y, x, x, R16G16_USCALED)
182 SF( x, x, x, x, x, x, Y, x, x, R32_SSCALED)
183 SF( x, x, x, x, x, x, Y, x, x, R32_USCALED)
184 SF( Y, Y, x, Y, Y, Y, x, x, x, B5G6R5_UNORM)
185 SF( Y, Y, x, x, Y, Y, x, x, x, B5G6R5_UNORM_SRGB)
186 SF( Y, Y, x, Y, Y, Y, x, x, x, B5G5R5A1_UNORM)
187 SF( Y, Y, x, x, Y, Y, x, x, x, B5G5R5A1_UNORM_SRGB)
188 SF( Y, Y, x, Y, Y, Y, x, x, x, B4G4R4A4_UNORM)
189 SF( Y, Y, x, x, Y, Y, x, x, x, B4G4R4A4_UNORM_SRGB)
190 SF( Y, Y, x, x, Y, Y, Y, x, x, R8G8_UNORM)
191 SF( Y, Y, x, Y, Y, 60, Y, x, x, R8G8_SNORM)
192 SF( Y, x, x, x, Y, x, Y, x, x, R8G8_SINT)
193 SF( Y, x, x, x, Y, x, Y, x, x, R8G8_UINT)
194 SF( Y, Y, Y, x, Y, 45, Y, x, 70, R16_UNORM)
195 SF( Y, Y, x, x, Y, 60, Y, x, x, R16_SNORM)
196 SF( Y, x, x, x, Y, x, Y, x, x, R16_SINT)
197 SF( Y, x, x, x, Y, x, Y, x, x, R16_UINT)
198 SF( Y, Y, x, x, Y, Y, Y, x, x, R16_FLOAT)
199 SF(50, 50, x, x, x, x, x, x, x, A8P8_UNORM_PALETTE0)
200 SF(50, 50, x, x, x, x, x, x, x, A8P8_UNORM_PALETTE1)
201 SF( Y, Y, Y, x, x, x, x, x, x, I16_UNORM)
202 SF( Y, Y, Y, x, x, x, x, x, x, L16_UNORM)
203 SF( Y, Y, Y, x, x, x, x, x, x, A16_UNORM)
204 SF( Y, Y, x, Y, x, x, x, x, x, L8A8_UNORM)
205 SF( Y, Y, Y, x, x, x, x, x, x, I16_FLOAT)
206 SF( Y, Y, Y, x, x, x, x, x, x, L16_FLOAT)
207 SF( Y, Y, Y, x, x, x, x, x, x, A16_FLOAT)
208 SF(45, 45, x, x, x, x, x, x, x, L8A8_UNORM_SRGB)
209 SF( Y, Y, x, Y, x, x, x, x, x, R5G5_SNORM_B6_UNORM)
210 SF( x, x, x, x, Y, Y, x, x, x, B5G5R5X1_UNORM)
211 SF( x, x, x, x, Y, Y, x, x, x, B5G5R5X1_UNORM_SRGB)
212 SF( x, x, x, x, x, x, Y, x, x, R8G8_SSCALED)
213 SF( x, x, x, x, x, x, Y, x, x, R8G8_USCALED)
214 /* smpl filt shad CK RT AB VB SO color */
215 SF( x, x, x, x, x, x, Y, x, x, R16_SSCALED)
216 SF( x, x, x, x, x, x, Y, x, x, R16_USCALED)
217 SF(50, 50, x, x, x, x, x, x, x, P8A8_UNORM_PALETTE0)
218 SF(50, 50, x, x, x, x, x, x, x, P8A8_UNORM_PALETTE1)
219 SF( x, x, x, x, x, x, x, x, x, A1B5G5R5_UNORM)
220 SF( x, x, x, x, x, x, x, x, x, A4B4G4R4_UNORM)
221 SF( x, x, x, x, x, x, x, x, x, L8A8_UINT)
222 SF( x, x, x, x, x, x, x, x, x, L8A8_SINT)
223 SF( Y, Y, x, 45, Y, Y, Y, x, x, R8_UNORM)
224 SF( Y, Y, x, x, Y, 60, Y, x, x, R8_SNORM)
225 SF( Y, x, x, x, Y, x, Y, x, x, R8_SINT)
226 SF( Y, x, x, x, Y, x, Y, x, x, R8_UINT)
227 SF( Y, Y, x, Y, Y, Y, x, x, x, A8_UNORM)
228 SF( Y, Y, x, x, x, x, x, x, x, I8_UNORM)
229 SF( Y, Y, x, Y, x, x, x, x, x, L8_UNORM)
230 SF( Y, Y, x, x, x, x, x, x, x, P4A4_UNORM)
231 SF( Y, Y, x, x, x, x, x, x, x, A4P4_UNORM)
232 SF( x, x, x, x, x, x, Y, x, x, R8_SSCALED)
233 SF( x, x, x, x, x, x, Y, x, x, R8_USCALED)
234 SF(45, 45, x, x, x, x, x, x, x, P8_UNORM_PALETTE0)
235 SF(45, 45, x, x, x, x, x, x, x, L8_UNORM_SRGB)
236 SF(45, 45, x, x, x, x, x, x, x, P8_UNORM_PALETTE1)
237 SF(45, 45, x, x, x, x, x, x, x, P4A4_UNORM_PALETTE1)
238 SF(45, 45, x, x, x, x, x, x, x, A4P4_UNORM_PALETTE1)
239 SF( x, x, x, x, x, x, x, x, x, Y8_SNORM)
240 SF( x, x, x, x, x, x, x, x, x, L8_UINT)
241 SF( x, x, x, x, x, x, x, x, x, L8_SINT)
242 SF( x, x, x, x, x, x, x, x, x, I8_UINT)
243 SF( x, x, x, x, x, x, x, x, x, I8_SINT)
244 SF(45, 45, x, x, x, x, x, x, x, DXT1_RGB_SRGB)
245 SF( Y, Y, x, x, x, x, x, x, x, R1_UINT)
246 SF( Y, Y, x, Y, Y, x, x, x, 60, YCRCB_NORMAL)
247 SF( Y, Y, x, Y, Y, x, x, x, 60, YCRCB_SWAPUVY)
248 SF(45, 45, x, x, x, x, x, x, x, P2_UNORM_PALETTE0)
249 SF(45, 45, x, x, x, x, x, x, x, P2_UNORM_PALETTE1)
250 SF( Y, Y, x, Y, x, x, x, x, x, BC1_UNORM)
251 SF( Y, Y, x, Y, x, x, x, x, x, BC2_UNORM)
252 SF( Y, Y, x, Y, x, x, x, x, x, BC3_UNORM)
253 SF( Y, Y, x, x, x, x, x, x, x, BC4_UNORM)
254 SF( Y, Y, x, x, x, x, x, x, x, BC5_UNORM)
255 SF( Y, Y, x, x, x, x, x, x, x, BC1_UNORM_SRGB)
256 SF( Y, Y, x, x, x, x, x, x, x, BC2_UNORM_SRGB)
257 SF( Y, Y, x, x, x, x, x, x, x, BC3_UNORM_SRGB)
258 SF( Y, x, x, x, x, x, x, x, x, MONO8)
259 SF( Y, Y, x, x, Y, x, x, x, 60, YCRCB_SWAPUV)
260 SF( Y, Y, x, x, Y, x, x, x, 60, YCRCB_SWAPY)
261 SF( Y, Y, x, x, x, x, x, x, x, DXT1_RGB)
262 /* smpl filt shad CK RT AB VB SO color */
263 SF( Y, Y, x, x, x, x, x, x, x, FXT1)
264 SF( x, x, x, x, x, x, Y, x, x, R8G8B8_UNORM)
265 SF( x, x, x, x, x, x, Y, x, x, R8G8B8_SNORM)
266 SF( x, x, x, x, x, x, Y, x, x, R8G8B8_SSCALED)
267 SF( x, x, x, x, x, x, Y, x, x, R8G8B8_USCALED)
268 SF( x, x, x, x, x, x, Y, x, x, R64G64B64A64_FLOAT)
269 SF( x, x, x, x, x, x, Y, x, x, R64G64B64_FLOAT)
270 SF( Y, Y, x, x, x, x, x, x, x, BC4_SNORM)
271 SF( Y, Y, x, x, x, x, x, x, x, BC5_SNORM)
272 SF(50, 50, x, x, x, x, 60, x, x, R16G16B16_FLOAT)
273 SF( x, x, x, x, x, x, Y, x, x, R16G16B16_UNORM)
274 SF( x, x, x, x, x, x, Y, x, x, R16G16B16_SNORM)
275 SF( x, x, x, x, x, x, Y, x, x, R16G16B16_SSCALED)
276 SF( x, x, x, x, x, x, Y, x, x, R16G16B16_USCALED)
277 SF(70, 70, x, x, x, x, x, x, x, BC6H_SF16)
278 SF(70, 70, x, x, x, x, x, x, x, BC7_UNORM)
279 SF(70, 70, x, x, x, x, x, x, x, BC7_UNORM_SRGB)
280 SF(70, 70, x, x, x, x, x, x, x, BC6H_UF16)
281 SF( x, x, x, x, x, x, x, x, x, PLANAR_420_8)
282 SF( x, x, x, x, x, x, x, x, x, R8G8B8_UNORM_SRGB)
283 SF( x, x, x, x, x, x, x, x, x, ETC1_RGB8)
284 SF( x, x, x, x, x, x, x, x, x, ETC2_RGB8)
285 SF( x, x, x, x, x, x, x, x, x, EAC_R11)
286 SF( x, x, x, x, x, x, x, x, x, EAC_RG11)
287 SF( x, x, x, x, x, x, x, x, x, EAC_SIGNED_R11)
288 SF( x, x, x, x, x, x, x, x, x, EAC_SIGNED_RG11)
289 SF( x, x, x, x, x, x, x, x, x, ETC2_SRGB8)
290 SF( x, x, x, x, x, x, x, x, x, R16G16B16_UINT)
291 SF( x, x, x, x, x, x, x, x, x, R16G16B16_SINT)
292 SF( x, x, x, x, x, x, x, x, x, R32_SFIXED)
293 SF( x, x, x, x, x, x, x, x, x, R10G10B10A2_SNORM)
294 SF( x, x, x, x, x, x, x, x, x, R10G10B10A2_USCALED)
295 SF( x, x, x, x, x, x, x, x, x, R10G10B10A2_SSCALED)
296 SF( x, x, x, x, x, x, x, x, x, R10G10B10A2_SINT)
297 SF( x, x, x, x, x, x, x, x, x, B10G10R10A2_SNORM)
298 SF( x, x, x, x, x, x, x, x, x, B10G10R10A2_USCALED)
299 SF( x, x, x, x, x, x, x, x, x, B10G10R10A2_SSCALED)
300 SF( x, x, x, x, x, x, x, x, x, B10G10R10A2_UINT)
301 SF( x, x, x, x, x, x, x, x, x, B10G10R10A2_SINT)
302 SF( x, x, x, x, x, x, x, x, x, R64G64B64A64_PASSTHRU)
303 SF( x, x, x, x, x, x, x, x, x, R64G64B64_PASSTHRU)
304 SF( x, x, x, x, x, x, x, x, x, ETC2_RGB8_PTA)
305 SF( x, x, x, x, x, x, x, x, x, ETC2_SRGB8_PTA)
306 SF( x, x, x, x, x, x, x, x, x, ETC2_EAC_RGBA8)
307 SF( x, x, x, x, x, x, x, x, x, ETC2_EAC_SRGB8_A8)
308 SF( x, x, x, x, x, x, x, x, x, R8G8B8_UINT)
309 SF( x, x, x, x, x, x, x, x, x, R8G8B8_SINT)
310 };
311 #undef x
312 #undef Y
313
314 const char *
315 brw_surface_format_name(unsigned format)
316 {
317 return surface_formats[format].name;
318 }
319
320 uint32_t
321 brw_format_for_mesa_format(mesa_format mesa_format)
322 {
323 /* This table is ordered according to the enum ordering in formats.h. We do
324 * expect that enum to be extended without our explicit initialization
325 * staying in sync, so we initialize to 0 even though
326 * BRW_SURFACEFORMAT_R32G32B32A32_FLOAT happens to also be 0.
327 */
328 static const uint32_t table[MESA_FORMAT_COUNT] =
329 {
330 [MESA_FORMAT_A8B8G8R8_UNORM] = 0,
331 [MESA_FORMAT_R8G8B8A8_UNORM] = BRW_SURFACEFORMAT_R8G8B8A8_UNORM,
332 [MESA_FORMAT_B8G8R8A8_UNORM] = BRW_SURFACEFORMAT_B8G8R8A8_UNORM,
333 [MESA_FORMAT_A8R8G8B8_UNORM] = 0,
334 [MESA_FORMAT_X8B8G8R8_UNORM] = 0,
335 [MESA_FORMAT_R8G8B8X8_UNORM] = BRW_SURFACEFORMAT_R8G8B8X8_UNORM,
336 [MESA_FORMAT_B8G8R8X8_UNORM] = BRW_SURFACEFORMAT_B8G8R8X8_UNORM,
337 [MESA_FORMAT_X8R8G8B8_UNORM] = 0,
338 [MESA_FORMAT_BGR_UNORM8] = 0,
339 [MESA_FORMAT_RGB_UNORM8] = BRW_SURFACEFORMAT_R8G8B8_UNORM,
340 [MESA_FORMAT_B5G6R5_UNORM] = BRW_SURFACEFORMAT_B5G6R5_UNORM,
341 [MESA_FORMAT_R5G6B5_UNORM] = 0,
342 [MESA_FORMAT_B4G4R4A4_UNORM] = BRW_SURFACEFORMAT_B4G4R4A4_UNORM,
343 [MESA_FORMAT_A4R4G4B4_UNORM] = 0,
344 [MESA_FORMAT_A1B5G5R5_UNORM] = 0,
345 [MESA_FORMAT_B5G5R5A1_UNORM] = BRW_SURFACEFORMAT_B5G5R5A1_UNORM,
346 [MESA_FORMAT_A1R5G5B5_UNORM] = 0,
347 [MESA_FORMAT_L4A4_UNORM] = 0,
348 [MESA_FORMAT_L8A8_UNORM] = BRW_SURFACEFORMAT_L8A8_UNORM,
349 [MESA_FORMAT_A8L8_UNORM] = 0,
350 [MESA_FORMAT_L16A16_UNORM] = BRW_SURFACEFORMAT_L16A16_UNORM,
351 [MESA_FORMAT_A16L16_UNORM] = 0,
352 [MESA_FORMAT_B2G3R3_UNORM] = 0,
353 [MESA_FORMAT_A_UNORM8] = BRW_SURFACEFORMAT_A8_UNORM,
354 [MESA_FORMAT_A_UNORM16] = BRW_SURFACEFORMAT_A16_UNORM,
355 [MESA_FORMAT_L_UNORM8] = BRW_SURFACEFORMAT_L8_UNORM,
356 [MESA_FORMAT_L_UNORM16] = BRW_SURFACEFORMAT_L16_UNORM,
357 [MESA_FORMAT_I_UNORM8] = BRW_SURFACEFORMAT_I8_UNORM,
358 [MESA_FORMAT_I_UNORM16] = BRW_SURFACEFORMAT_I16_UNORM,
359 [MESA_FORMAT_YCBCR_REV] = BRW_SURFACEFORMAT_YCRCB_NORMAL,
360 [MESA_FORMAT_YCBCR] = BRW_SURFACEFORMAT_YCRCB_SWAPUVY,
361 [MESA_FORMAT_R_UNORM8] = BRW_SURFACEFORMAT_R8_UNORM,
362 [MESA_FORMAT_R8G8_UNORM] = BRW_SURFACEFORMAT_R8G8_UNORM,
363 [MESA_FORMAT_G8R8_UNORM] = 0,
364 [MESA_FORMAT_R_UNORM16] = BRW_SURFACEFORMAT_R16_UNORM,
365 [MESA_FORMAT_R16G16_UNORM] = BRW_SURFACEFORMAT_R16G16_UNORM,
366 [MESA_FORMAT_G16R16_UNORM] = 0,
367 [MESA_FORMAT_B10G10R10A2_UNORM] = BRW_SURFACEFORMAT_B10G10R10A2_UNORM,
368 [MESA_FORMAT_S8_UINT_Z24_UNORM] = 0,
369 [MESA_FORMAT_Z24_UNORM_S8_UINT] = 0,
370 [MESA_FORMAT_Z_UNORM16] = 0,
371 [MESA_FORMAT_Z24_UNORM_X8_UINT] = 0,
372 [MESA_FORMAT_X8_UINT_Z24_UNORM] = 0,
373 [MESA_FORMAT_Z_UNORM32] = 0,
374 [MESA_FORMAT_S_UINT8] = BRW_SURFACEFORMAT_R8_UINT,
375
376 [MESA_FORMAT_BGR_SRGB8] = 0,
377 [MESA_FORMAT_A8B8G8R8_SRGB] = 0,
378 [MESA_FORMAT_B8G8R8A8_SRGB] = BRW_SURFACEFORMAT_B8G8R8A8_UNORM_SRGB,
379 [MESA_FORMAT_A8R8G8B8_SRGB] = 0,
380 [MESA_FORMAT_R8G8B8A8_SRGB] = BRW_SURFACEFORMAT_R8G8B8A8_UNORM_SRGB,
381 [MESA_FORMAT_X8R8G8B8_SRGB] = 0,
382 [MESA_FORMAT_L_SRGB8] = BRW_SURFACEFORMAT_L8_UNORM_SRGB,
383 [MESA_FORMAT_L8A8_SRGB] = BRW_SURFACEFORMAT_L8A8_UNORM_SRGB,
384 [MESA_FORMAT_A8L8_SRGB] = 0,
385 [MESA_FORMAT_SRGB_DXT1] = BRW_SURFACEFORMAT_DXT1_RGB_SRGB,
386 [MESA_FORMAT_SRGBA_DXT1] = BRW_SURFACEFORMAT_BC1_UNORM_SRGB,
387 [MESA_FORMAT_SRGBA_DXT3] = BRW_SURFACEFORMAT_BC2_UNORM_SRGB,
388 [MESA_FORMAT_SRGBA_DXT5] = BRW_SURFACEFORMAT_BC3_UNORM_SRGB,
389
390 [MESA_FORMAT_RGB_FXT1] = BRW_SURFACEFORMAT_FXT1,
391 [MESA_FORMAT_RGBA_FXT1] = BRW_SURFACEFORMAT_FXT1,
392 [MESA_FORMAT_RGB_DXT1] = BRW_SURFACEFORMAT_DXT1_RGB,
393 [MESA_FORMAT_RGBA_DXT1] = BRW_SURFACEFORMAT_BC1_UNORM,
394 [MESA_FORMAT_RGBA_DXT3] = BRW_SURFACEFORMAT_BC2_UNORM,
395 [MESA_FORMAT_RGBA_DXT5] = BRW_SURFACEFORMAT_BC3_UNORM,
396
397 [MESA_FORMAT_RGBA_FLOAT32] = BRW_SURFACEFORMAT_R32G32B32A32_FLOAT,
398 [MESA_FORMAT_RGBA_FLOAT16] = BRW_SURFACEFORMAT_R16G16B16A16_FLOAT,
399 [MESA_FORMAT_RGB_FLOAT32] = BRW_SURFACEFORMAT_R32G32B32_FLOAT,
400 [MESA_FORMAT_RGB_FLOAT16] = 0,
401 [MESA_FORMAT_A_FLOAT32] = BRW_SURFACEFORMAT_A32_FLOAT,
402 [MESA_FORMAT_A_FLOAT16] = BRW_SURFACEFORMAT_A16_FLOAT,
403 [MESA_FORMAT_L_FLOAT32] = BRW_SURFACEFORMAT_L32_FLOAT,
404 [MESA_FORMAT_L_FLOAT16] = BRW_SURFACEFORMAT_L16_FLOAT,
405 [MESA_FORMAT_LA_FLOAT32] = BRW_SURFACEFORMAT_L32A32_FLOAT,
406 [MESA_FORMAT_LA_FLOAT16] = BRW_SURFACEFORMAT_L16A16_FLOAT,
407 [MESA_FORMAT_I_FLOAT32] = BRW_SURFACEFORMAT_I32_FLOAT,
408 [MESA_FORMAT_I_FLOAT16] = BRW_SURFACEFORMAT_I16_FLOAT,
409 [MESA_FORMAT_R_FLOAT32] = BRW_SURFACEFORMAT_R32_FLOAT,
410 [MESA_FORMAT_R_FLOAT16] = BRW_SURFACEFORMAT_R16_FLOAT,
411 [MESA_FORMAT_RG_FLOAT32] = BRW_SURFACEFORMAT_R32G32_FLOAT,
412 [MESA_FORMAT_RG_FLOAT16] = BRW_SURFACEFORMAT_R16G16_FLOAT,
413
414 [MESA_FORMAT_A_UINT8] = 0,
415 [MESA_FORMAT_A_UINT16] = 0,
416 [MESA_FORMAT_A_UINT32] = 0,
417 [MESA_FORMAT_A_SINT8] = 0,
418 [MESA_FORMAT_A_SINT16] = 0,
419 [MESA_FORMAT_A_SINT32] = 0,
420
421 [MESA_FORMAT_I_UINT8] = 0,
422 [MESA_FORMAT_I_UINT16] = 0,
423 [MESA_FORMAT_I_UINT32] = 0,
424 [MESA_FORMAT_I_SINT8] = 0,
425 [MESA_FORMAT_I_SINT16] = 0,
426 [MESA_FORMAT_I_SINT32] = 0,
427
428 [MESA_FORMAT_L_UINT8] = 0,
429 [MESA_FORMAT_L_UINT16] = 0,
430 [MESA_FORMAT_L_UINT32] = 0,
431 [MESA_FORMAT_L_SINT8] = 0,
432 [MESA_FORMAT_L_SINT16] = 0,
433 [MESA_FORMAT_L_SINT32] = 0,
434
435 [MESA_FORMAT_LA_UINT8] = 0,
436 [MESA_FORMAT_LA_UINT16] = 0,
437 [MESA_FORMAT_LA_UINT32] = 0,
438 [MESA_FORMAT_LA_SINT8] = 0,
439 [MESA_FORMAT_LA_SINT16] = 0,
440 [MESA_FORMAT_LA_SINT32] = 0,
441
442 [MESA_FORMAT_R_SINT8] = BRW_SURFACEFORMAT_R8_SINT,
443 [MESA_FORMAT_RG_SINT8] = BRW_SURFACEFORMAT_R8G8_SINT,
444 [MESA_FORMAT_RGB_SINT8] = BRW_SURFACEFORMAT_R8G8B8_SINT,
445 [MESA_FORMAT_RGBA_SINT8] = BRW_SURFACEFORMAT_R8G8B8A8_SINT,
446 [MESA_FORMAT_R_SINT16] = BRW_SURFACEFORMAT_R16_SINT,
447 [MESA_FORMAT_RG_SINT16] = BRW_SURFACEFORMAT_R16G16_SINT,
448 [MESA_FORMAT_RGB_SINT16] = BRW_SURFACEFORMAT_R16G16B16_SINT,
449 [MESA_FORMAT_RGBA_SINT16] = BRW_SURFACEFORMAT_R16G16B16A16_SINT,
450 [MESA_FORMAT_R_SINT32] = BRW_SURFACEFORMAT_R32_SINT,
451 [MESA_FORMAT_RG_SINT32] = BRW_SURFACEFORMAT_R32G32_SINT,
452 [MESA_FORMAT_RGB_SINT32] = BRW_SURFACEFORMAT_R32G32B32_SINT,
453 [MESA_FORMAT_RGBA_SINT32] = BRW_SURFACEFORMAT_R32G32B32A32_SINT,
454
455 [MESA_FORMAT_R_UINT8] = BRW_SURFACEFORMAT_R8_UINT,
456 [MESA_FORMAT_RG_UINT8] = BRW_SURFACEFORMAT_R8G8_UINT,
457 [MESA_FORMAT_RGB_UINT8] = BRW_SURFACEFORMAT_R8G8B8_UINT,
458 [MESA_FORMAT_RGBA_UINT8] = BRW_SURFACEFORMAT_R8G8B8A8_UINT,
459 [MESA_FORMAT_R_UINT16] = BRW_SURFACEFORMAT_R16_UINT,
460 [MESA_FORMAT_RG_UINT16] = BRW_SURFACEFORMAT_R16G16_UINT,
461 [MESA_FORMAT_RGB_UINT16] = BRW_SURFACEFORMAT_R16G16B16_UINT,
462 [MESA_FORMAT_RGBA_UINT16] = BRW_SURFACEFORMAT_R16G16B16A16_UINT,
463 [MESA_FORMAT_R_UINT32] = BRW_SURFACEFORMAT_R32_UINT,
464 [MESA_FORMAT_RG_UINT32] = BRW_SURFACEFORMAT_R32G32_UINT,
465 [MESA_FORMAT_RGB_UINT32] = BRW_SURFACEFORMAT_R32G32B32_UINT,
466 [MESA_FORMAT_RGBA_UINT32] = BRW_SURFACEFORMAT_R32G32B32A32_UINT,
467
468 [MESA_FORMAT_R_SNORM8] = BRW_SURFACEFORMAT_R8_SNORM,
469 [MESA_FORMAT_R8G8_SNORM] = BRW_SURFACEFORMAT_R8G8_SNORM,
470 [MESA_FORMAT_X8B8G8R8_SNORM] = 0,
471 [MESA_FORMAT_A8B8G8R8_SNORM] = 0,
472 [MESA_FORMAT_R8G8B8A8_SNORM] = BRW_SURFACEFORMAT_R8G8B8A8_SNORM,
473 [MESA_FORMAT_R_SNORM16] = BRW_SURFACEFORMAT_R16_SNORM,
474 [MESA_FORMAT_R16G16_SNORM] = BRW_SURFACEFORMAT_R16G16_SNORM,
475 [MESA_FORMAT_RGB_SNORM16] = BRW_SURFACEFORMAT_R16G16B16_SNORM,
476 [MESA_FORMAT_RGBA_SNORM16] = BRW_SURFACEFORMAT_R16G16B16A16_SNORM,
477 [MESA_FORMAT_RGBA_UNORM16] = BRW_SURFACEFORMAT_R16G16B16A16_UNORM,
478
479 [MESA_FORMAT_R_RGTC1_UNORM] = BRW_SURFACEFORMAT_BC4_UNORM,
480 [MESA_FORMAT_R_RGTC1_SNORM] = BRW_SURFACEFORMAT_BC4_SNORM,
481 [MESA_FORMAT_RG_RGTC2_UNORM] = BRW_SURFACEFORMAT_BC5_UNORM,
482 [MESA_FORMAT_RG_RGTC2_SNORM] = BRW_SURFACEFORMAT_BC5_SNORM,
483
484 [MESA_FORMAT_L_LATC1_UNORM] = 0,
485 [MESA_FORMAT_L_LATC1_SNORM] = 0,
486 [MESA_FORMAT_LA_LATC2_UNORM] = 0,
487 [MESA_FORMAT_LA_LATC2_SNORM] = 0,
488
489 [MESA_FORMAT_ETC1_RGB8] = BRW_SURFACEFORMAT_ETC1_RGB8,
490 [MESA_FORMAT_ETC2_RGB8] = BRW_SURFACEFORMAT_ETC2_RGB8,
491 [MESA_FORMAT_ETC2_SRGB8] = BRW_SURFACEFORMAT_ETC2_SRGB8,
492 [MESA_FORMAT_ETC2_RGBA8_EAC] = BRW_SURFACEFORMAT_ETC2_EAC_RGBA8,
493 [MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC] = BRW_SURFACEFORMAT_ETC2_EAC_SRGB8_A8,
494 [MESA_FORMAT_ETC2_R11_EAC] = BRW_SURFACEFORMAT_EAC_R11,
495 [MESA_FORMAT_ETC2_RG11_EAC] = BRW_SURFACEFORMAT_EAC_RG11,
496 [MESA_FORMAT_ETC2_SIGNED_R11_EAC] = BRW_SURFACEFORMAT_EAC_SIGNED_R11,
497 [MESA_FORMAT_ETC2_SIGNED_RG11_EAC] = BRW_SURFACEFORMAT_EAC_SIGNED_RG11,
498 [MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1] = BRW_SURFACEFORMAT_ETC2_RGB8_PTA,
499 [MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1] = BRW_SURFACEFORMAT_ETC2_SRGB8_PTA,
500
501 [MESA_FORMAT_BPTC_RGBA_UNORM] = BRW_SURFACEFORMAT_BC7_UNORM,
502 [MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM] = BRW_SURFACEFORMAT_BC7_UNORM_SRGB,
503 [MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT] = BRW_SURFACEFORMAT_BC6H_SF16,
504 [MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT] = BRW_SURFACEFORMAT_BC6H_UF16,
505
506 [MESA_FORMAT_A_SNORM8] = 0,
507 [MESA_FORMAT_L_SNORM8] = 0,
508 [MESA_FORMAT_L8A8_SNORM] = 0,
509 [MESA_FORMAT_A8L8_SNORM] = 0,
510 [MESA_FORMAT_I_SNORM8] = 0,
511 [MESA_FORMAT_A_SNORM16] = 0,
512 [MESA_FORMAT_L_SNORM16] = 0,
513 [MESA_FORMAT_LA_SNORM16] = 0,
514 [MESA_FORMAT_I_SNORM16] = 0,
515
516 [MESA_FORMAT_R9G9B9E5_FLOAT] = BRW_SURFACEFORMAT_R9G9B9E5_SHAREDEXP,
517 [MESA_FORMAT_R11G11B10_FLOAT] = BRW_SURFACEFORMAT_R11G11B10_FLOAT,
518
519 [MESA_FORMAT_Z_FLOAT32] = 0,
520 [MESA_FORMAT_Z32_FLOAT_S8X24_UINT] = 0,
521
522 [MESA_FORMAT_R10G10B10A2_UNORM] = BRW_SURFACEFORMAT_R10G10B10A2_UNORM,
523 [MESA_FORMAT_B10G10R10A2_UINT] = BRW_SURFACEFORMAT_B10G10R10A2_UINT,
524 [MESA_FORMAT_R10G10B10A2_UINT] = BRW_SURFACEFORMAT_R10G10B10A2_UINT,
525
526 [MESA_FORMAT_B4G4R4X4_UNORM] = 0,
527 [MESA_FORMAT_B5G5R5X1_UNORM] = BRW_SURFACEFORMAT_B5G5R5X1_UNORM,
528 [MESA_FORMAT_R8G8B8X8_SNORM] = 0,
529 [MESA_FORMAT_R8G8B8X8_SRGB] = BRW_SURFACEFORMAT_R8G8B8X8_UNORM_SRGB,
530 [MESA_FORMAT_X8B8G8R8_SRGB] = 0,
531 [MESA_FORMAT_RGBX_UINT8] = 0,
532 [MESA_FORMAT_RGBX_SINT8] = 0,
533 [MESA_FORMAT_B10G10R10X2_UNORM] = BRW_SURFACEFORMAT_B10G10R10X2_UNORM,
534 [MESA_FORMAT_RGBX_UNORM16] = BRW_SURFACEFORMAT_R16G16B16X16_UNORM,
535 [MESA_FORMAT_RGBX_SNORM16] = 0,
536 [MESA_FORMAT_RGBX_FLOAT16] = BRW_SURFACEFORMAT_R16G16B16X16_FLOAT,
537 [MESA_FORMAT_RGBX_UINT16] = 0,
538 [MESA_FORMAT_RGBX_SINT16] = 0,
539 [MESA_FORMAT_RGBX_FLOAT32] = BRW_SURFACEFORMAT_R32G32B32X32_FLOAT,
540 [MESA_FORMAT_RGBX_UINT32] = 0,
541 [MESA_FORMAT_RGBX_SINT32] = 0,
542 };
543 assert(mesa_format < MESA_FORMAT_COUNT);
544 return table[mesa_format];
545 }
546
547 void
548 brw_init_surface_formats(struct brw_context *brw)
549 {
550 struct gl_context *ctx = &brw->ctx;
551 int gen;
552 mesa_format format;
553
554 memset(&ctx->TextureFormatSupported, 0, sizeof(ctx->TextureFormatSupported));
555
556 gen = brw->gen * 10;
557 if (brw->is_g4x || brw->is_haswell)
558 gen += 5;
559
560 for (format = MESA_FORMAT_NONE + 1; format < MESA_FORMAT_COUNT; format++) {
561 uint32_t texture, render;
562 const struct surface_format_info *rinfo, *tinfo;
563 bool is_integer = _mesa_is_format_integer_color(format);
564
565 render = texture = brw_format_for_mesa_format(format);
566 tinfo = &surface_formats[texture];
567
568 /* The value of BRW_SURFACEFORMAT_R32G32B32A32_FLOAT is 0, so don't skip
569 * it.
570 */
571 if (texture == 0 && format != MESA_FORMAT_RGBA_FLOAT32)
572 continue;
573
574 if (gen >= tinfo->sampling && (gen >= tinfo->filtering || is_integer))
575 ctx->TextureFormatSupported[format] = true;
576
577 /* Re-map some render target formats to make them supported when they
578 * wouldn't be using their format for texturing.
579 */
580 switch (render) {
581 /* For these formats, we just need to read/write the first
582 * channel into R, which is to say that we just treat them as
583 * GL_RED.
584 */
585 case BRW_SURFACEFORMAT_I32_FLOAT:
586 case BRW_SURFACEFORMAT_L32_FLOAT:
587 render = BRW_SURFACEFORMAT_R32_FLOAT;
588 break;
589 case BRW_SURFACEFORMAT_I16_FLOAT:
590 case BRW_SURFACEFORMAT_L16_FLOAT:
591 render = BRW_SURFACEFORMAT_R16_FLOAT;
592 break;
593 case BRW_SURFACEFORMAT_I8_UNORM:
594 case BRW_SURFACEFORMAT_L8_UNORM:
595 render = BRW_SURFACEFORMAT_R8_UNORM;
596 break;
597 case BRW_SURFACEFORMAT_I16_UNORM:
598 case BRW_SURFACEFORMAT_L16_UNORM:
599 render = BRW_SURFACEFORMAT_R16_UNORM;
600 break;
601 case BRW_SURFACEFORMAT_R16G16B16X16_UNORM:
602 render = BRW_SURFACEFORMAT_R16G16B16A16_UNORM;
603 break;
604 case BRW_SURFACEFORMAT_R16G16B16X16_FLOAT:
605 render = BRW_SURFACEFORMAT_R16G16B16A16_FLOAT;
606 break;
607 case BRW_SURFACEFORMAT_B8G8R8X8_UNORM:
608 /* XRGB is handled as ARGB because the chips in this family
609 * cannot render to XRGB targets. This means that we have to
610 * mask writes to alpha (ala glColorMask) and reconfigure the
611 * alpha blending hardware to use GL_ONE (or GL_ZERO) for
612 * cases where GL_DST_ALPHA (or GL_ONE_MINUS_DST_ALPHA) is
613 * used.
614 */
615 render = BRW_SURFACEFORMAT_B8G8R8A8_UNORM;
616 break;
617 case BRW_SURFACEFORMAT_R8G8B8X8_UNORM:
618 render = BRW_SURFACEFORMAT_R8G8B8A8_UNORM;
619 break;
620 case BRW_SURFACEFORMAT_R8G8B8X8_UNORM_SRGB:
621 render = BRW_SURFACEFORMAT_R8G8B8A8_UNORM_SRGB;
622 break;
623 }
624
625 rinfo = &surface_formats[render];
626
627 /* Note that GL_EXT_texture_integer says that blending doesn't occur for
628 * integer, so we don't need hardware support for blending on it. Other
629 * than that, GL in general requires alpha blending for render targets,
630 * even though we don't support it for some formats.
631 */
632 if (gen >= rinfo->render_target &&
633 (gen >= rinfo->alpha_blend || is_integer)) {
634 brw->render_target_format[format] = render;
635 brw->format_supported_as_render_target[format] = true;
636 }
637 }
638
639 /* We will check this table for FBO completeness, but the surface format
640 * table above only covered color rendering.
641 */
642 brw->format_supported_as_render_target[MESA_FORMAT_Z24_UNORM_S8_UINT] = true;
643 brw->format_supported_as_render_target[MESA_FORMAT_Z24_UNORM_X8_UINT] = true;
644 brw->format_supported_as_render_target[MESA_FORMAT_S_UINT8] = true;
645 brw->format_supported_as_render_target[MESA_FORMAT_Z_FLOAT32] = true;
646 brw->format_supported_as_render_target[MESA_FORMAT_Z32_FLOAT_S8X24_UINT] = true;
647 if (brw->gen >= 8)
648 brw->format_supported_as_render_target[MESA_FORMAT_Z_UNORM16] = true;
649
650 /* We remap depth formats to a supported texturing format in
651 * translate_tex_format().
652 */
653 ctx->TextureFormatSupported[MESA_FORMAT_Z24_UNORM_S8_UINT] = true;
654 ctx->TextureFormatSupported[MESA_FORMAT_Z24_UNORM_X8_UINT] = true;
655 ctx->TextureFormatSupported[MESA_FORMAT_Z_FLOAT32] = true;
656 ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT_S8X24_UINT] = true;
657
658 /* Benchmarking shows that Z16 is slower than Z24, so there's no reason to
659 * use it unless you're under memory (not memory bandwidth) pressure.
660 *
661 * Apparently, the GPU's depth scoreboarding works on a 32-bit granularity,
662 * which corresponds to one pixel in the depth buffer for Z24 or Z32 formats.
663 * However, it corresponds to two pixels with Z16, which means both need to
664 * hit the early depth case in order for it to happen.
665 *
666 * Other speculation is that we may be hitting increased fragment shader
667 * execution from GL_LEQUAL/GL_EQUAL depth tests at reduced precision.
668 *
669 * With the PMA stall workaround in place, Z16 is faster than Z24, as it
670 * should be.
671 */
672 if (brw->gen >= 8)
673 ctx->TextureFormatSupported[MESA_FORMAT_Z_UNORM16] = true;
674
675 /* On hardware that lacks support for ETC1, we map ETC1 to RGBX
676 * during glCompressedTexImage2D(). See intel_mipmap_tree::wraps_etc1.
677 */
678 ctx->TextureFormatSupported[MESA_FORMAT_ETC1_RGB8] = true;
679
680 /* On hardware that lacks support for ETC2, we map ETC2 to a suitable
681 * MESA_FORMAT during glCompressedTexImage2D().
682 * See intel_mipmap_tree::wraps_etc2.
683 */
684 ctx->TextureFormatSupported[MESA_FORMAT_ETC2_RGB8] = true;
685 ctx->TextureFormatSupported[MESA_FORMAT_ETC2_SRGB8] = true;
686 ctx->TextureFormatSupported[MESA_FORMAT_ETC2_RGBA8_EAC] = true;
687 ctx->TextureFormatSupported[MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC] = true;
688 ctx->TextureFormatSupported[MESA_FORMAT_ETC2_R11_EAC] = true;
689 ctx->TextureFormatSupported[MESA_FORMAT_ETC2_RG11_EAC] = true;
690 ctx->TextureFormatSupported[MESA_FORMAT_ETC2_SIGNED_R11_EAC] = true;
691 ctx->TextureFormatSupported[MESA_FORMAT_ETC2_SIGNED_RG11_EAC] = true;
692 ctx->TextureFormatSupported[MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1] = true;
693 ctx->TextureFormatSupported[MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1] = true;
694 }
695
696 bool
697 brw_render_target_supported(struct brw_context *brw,
698 struct gl_renderbuffer *rb)
699 {
700 mesa_format format = rb->Format;
701
702 /* Many integer formats are promoted to RGBA (like XRGB8888 is), which means
703 * we would consider them renderable even though we don't have surface
704 * support for their alpha behavior and don't have the blending unit
705 * available to fake it like we do for XRGB8888. Force them to being
706 * unsupported.
707 */
708 if (_mesa_is_format_integer_color(format) &&
709 rb->_BaseFormat != GL_RGBA &&
710 rb->_BaseFormat != GL_RG &&
711 rb->_BaseFormat != GL_RED)
712 return false;
713
714 /* Under some conditions, MSAA is not supported for formats whose width is
715 * more than 64 bits.
716 */
717 if (rb->NumSamples > 0 && _mesa_get_format_bytes(format) > 8) {
718 /* Gen6: MSAA on >64 bit formats is unsupported. */
719 if (brw->gen <= 6)
720 return false;
721
722 /* Gen7: 8x MSAA on >64 bit formats is unsupported. */
723 if (rb->NumSamples >= 8)
724 return false;
725 }
726
727 return brw->format_supported_as_render_target[format];
728 }
729
730 GLuint
731 translate_tex_format(struct brw_context *brw,
732 mesa_format mesa_format,
733 GLenum srgb_decode)
734 {
735 struct gl_context *ctx = &brw->ctx;
736 if (srgb_decode == GL_SKIP_DECODE_EXT)
737 mesa_format = _mesa_get_srgb_format_linear(mesa_format);
738
739 switch( mesa_format ) {
740
741 case MESA_FORMAT_Z_UNORM16:
742 return BRW_SURFACEFORMAT_R16_UNORM;
743
744 case MESA_FORMAT_Z24_UNORM_S8_UINT:
745 case MESA_FORMAT_Z24_UNORM_X8_UINT:
746 return BRW_SURFACEFORMAT_R24_UNORM_X8_TYPELESS;
747
748 case MESA_FORMAT_Z_FLOAT32:
749 return BRW_SURFACEFORMAT_R32_FLOAT;
750
751 case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
752 return BRW_SURFACEFORMAT_R32_FLOAT_X8X24_TYPELESS;
753
754 case MESA_FORMAT_RGBA_FLOAT32:
755 /* The value of this BRW_SURFACEFORMAT is 0, which tricks the
756 * assertion below.
757 */
758 return BRW_SURFACEFORMAT_R32G32B32A32_FLOAT;
759
760 case MESA_FORMAT_SRGB_DXT1:
761 if (brw->gen == 4 && !brw->is_g4x) {
762 /* Work around missing SRGB DXT1 support on original gen4 by just
763 * skipping SRGB decode. It's not worth not supporting sRGB in
764 * general to prevent this.
765 */
766 WARN_ONCE(true, "Demoting sRGB DXT1 texture to non-sRGB\n");
767 mesa_format = MESA_FORMAT_RGB_DXT1;
768 }
769 return brw_format_for_mesa_format(mesa_format);
770
771 default:
772 assert(brw_format_for_mesa_format(mesa_format) != 0);
773 return brw_format_for_mesa_format(mesa_format);
774 }
775 }
776
777 /**
778 * Convert a MESA_FORMAT to the corresponding BRW_DEPTHFORMAT enum.
779 */
780 uint32_t
781 brw_depth_format(struct brw_context *brw, mesa_format format)
782 {
783 switch (format) {
784 case MESA_FORMAT_Z_UNORM16:
785 return BRW_DEPTHFORMAT_D16_UNORM;
786 case MESA_FORMAT_Z_FLOAT32:
787 return BRW_DEPTHFORMAT_D32_FLOAT;
788 case MESA_FORMAT_Z24_UNORM_X8_UINT:
789 if (brw->gen >= 6) {
790 return BRW_DEPTHFORMAT_D24_UNORM_X8_UINT;
791 } else {
792 /* Use D24_UNORM_S8, not D24_UNORM_X8.
793 *
794 * D24_UNORM_X8 was not introduced until Gen5. (See the Ironlake PRM,
795 * Volume 2, Part 1, Section 8.4.6 "Depth/Stencil Buffer State", Bits
796 * 3DSTATE_DEPTH_BUFFER.Surface_Format).
797 *
798 * However, on Gen5, D24_UNORM_X8 may be used only if separate
799 * stencil is enabled, and we never enable it. From the Ironlake PRM,
800 * same section as above, 3DSTATE_DEPTH_BUFFER's
801 * "Separate Stencil Buffer Enable" bit:
802 *
803 * "If this field is disabled, the Surface Format of the depth
804 * buffer cannot be D24_UNORM_X8_UINT."
805 */
806 return BRW_DEPTHFORMAT_D24_UNORM_S8_UINT;
807 }
808 case MESA_FORMAT_Z24_UNORM_S8_UINT:
809 return BRW_DEPTHFORMAT_D24_UNORM_S8_UINT;
810 case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
811 return BRW_DEPTHFORMAT_D32_FLOAT_S8X24_UINT;
812 default:
813 unreachable("Unexpected depth format.");
814 }
815 }
816
817 mesa_format
818 brw_lower_mesa_image_format(const struct brw_device_info *devinfo,
819 mesa_format format)
820 {
821 switch (format) {
822 /* These are never lowered. Up to BDW we'll have to fall back to untyped
823 * surface access for 128bpp formats.
824 */
825 case MESA_FORMAT_RGBA_UINT32:
826 case MESA_FORMAT_RGBA_SINT32:
827 case MESA_FORMAT_RGBA_FLOAT32:
828 case MESA_FORMAT_R_UINT32:
829 case MESA_FORMAT_R_SINT32:
830 case MESA_FORMAT_R_FLOAT32:
831 return format;
832
833 /* From HSW to BDW the only 64bpp format supported for typed access is
834 * RGBA_UINT16. IVB falls back to untyped.
835 */
836 case MESA_FORMAT_RGBA_UINT16:
837 case MESA_FORMAT_RGBA_SINT16:
838 case MESA_FORMAT_RGBA_FLOAT16:
839 case MESA_FORMAT_RG_UINT32:
840 case MESA_FORMAT_RG_SINT32:
841 case MESA_FORMAT_RG_FLOAT32:
842 return (devinfo->gen >= 9 ? format :
843 devinfo->gen >= 8 || devinfo->is_haswell ?
844 MESA_FORMAT_RGBA_UINT16 : MESA_FORMAT_RG_UINT32);
845
846 /* Up to BDW no SINT or FLOAT formats of less than 32 bits per component
847 * are supported. IVB doesn't support formats with more than one component
848 * for typed access. For 8 and 16 bpp formats IVB relies on the
849 * undocumented behavior that typed reads from R_UINT8 and R_UINT16
850 * surfaces actually do a 32-bit misaligned read. The alternative would be
851 * to use two surface state entries with different formats for each image,
852 * one for reading (using R_UINT32) and another one for writing (using
853 * R_UINT8 or R_UINT16), but that would complicate the shaders we generate
854 * even more.
855 */
856 case MESA_FORMAT_RGBA_UINT8:
857 case MESA_FORMAT_RGBA_SINT8:
858 return (devinfo->gen >= 9 ? format :
859 devinfo->gen >= 8 || devinfo->is_haswell ?
860 MESA_FORMAT_RGBA_UINT8 : MESA_FORMAT_R_UINT32);
861
862 case MESA_FORMAT_RG_UINT16:
863 case MESA_FORMAT_RG_SINT16:
864 case MESA_FORMAT_RG_FLOAT16:
865 return (devinfo->gen >= 9 ? format :
866 devinfo->gen >= 8 || devinfo->is_haswell ?
867 MESA_FORMAT_RG_UINT16 : MESA_FORMAT_R_UINT32);
868
869 case MESA_FORMAT_RG_UINT8:
870 case MESA_FORMAT_RG_SINT8:
871 return (devinfo->gen >= 9 ? format :
872 devinfo->gen >= 8 || devinfo->is_haswell ?
873 MESA_FORMAT_RG_UINT8 : MESA_FORMAT_R_UINT16);
874
875 case MESA_FORMAT_R_UINT16:
876 case MESA_FORMAT_R_FLOAT16:
877 case MESA_FORMAT_R_SINT16:
878 return (devinfo->gen >= 9 ? format : MESA_FORMAT_R_UINT16);
879
880 case MESA_FORMAT_R_UINT8:
881 case MESA_FORMAT_R_SINT8:
882 return (devinfo->gen >= 9 ? format : MESA_FORMAT_R_UINT8);
883
884 /* Neither the 2/10/10/10 nor the 11/11/10 packed formats are supported
885 * by the hardware.
886 */
887 case MESA_FORMAT_R10G10B10A2_UINT:
888 case MESA_FORMAT_R10G10B10A2_UNORM:
889 case MESA_FORMAT_R11G11B10_FLOAT:
890 return MESA_FORMAT_R_UINT32;
891
892 /* No normalized fixed-point formats are supported by the hardware. */
893 case MESA_FORMAT_RGBA_UNORM16:
894 case MESA_FORMAT_RGBA_SNORM16:
895 return (devinfo->gen >= 8 || devinfo->is_haswell ?
896 MESA_FORMAT_RGBA_UINT16 : MESA_FORMAT_RG_UINT32);
897
898 case MESA_FORMAT_R8G8B8A8_UNORM:
899 case MESA_FORMAT_R8G8B8A8_SNORM:
900 return (devinfo->gen >= 8 || devinfo->is_haswell ?
901 MESA_FORMAT_RGBA_UINT8 : MESA_FORMAT_R_UINT32);
902
903 case MESA_FORMAT_R16G16_UNORM:
904 case MESA_FORMAT_R16G16_SNORM:
905 return (devinfo->gen >= 8 || devinfo->is_haswell ?
906 MESA_FORMAT_RG_UINT16 : MESA_FORMAT_R_UINT32);
907
908 case MESA_FORMAT_R8G8_UNORM:
909 case MESA_FORMAT_R8G8_SNORM:
910 return (devinfo->gen >= 8 || devinfo->is_haswell ?
911 MESA_FORMAT_RG_UINT8 : MESA_FORMAT_R_UINT16);
912
913 case MESA_FORMAT_R_UNORM16:
914 case MESA_FORMAT_R_SNORM16:
915 return MESA_FORMAT_R_UINT16;
916
917 case MESA_FORMAT_R_UNORM8:
918 case MESA_FORMAT_R_SNORM8:
919 return MESA_FORMAT_R_UINT8;
920
921 default:
922 unreachable("Unknown image format");
923 }
924 }