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 "dev/gen_device_info.h"
  28
  29 struct surface_format_info {
  30    bool exists;
  31    uint8_t sampling;
  32    uint8_t filtering;
  33    uint8_t shadow_compare;
  34    uint8_t chroma_key;
  35    uint8_t render_target;
  36    uint8_t alpha_blend;
  37    uint8_t input_vb;
  38    uint8_t streamed_output_vb;
  39    uint8_t color_processing;
  40    uint8_t typed_write;
  41    uint8_t typed_read;
  42    uint8_t ccs_e;
  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, tw, tr, ccs_e, sf) \
  49    [ISL_FORMAT_##sf] = { true, sampl, filt, shad, ck, rt, ab, vb, so, color, tw, tr, ccs_e},
  50
  51 #define Y 0
  52 #define x 255
  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  * ccs_e - Lossless Compression Support (gen9+ only)
  78  * sf    - Surface Format
  79  *
  80  * See page 88 of the Sandybridge PRM VOL4_Part1 PDF.
  81  *
  82  * As of Ivybridge, the columns are no longer in that table and the
  83  * information can be found spread across:
  84  *
  85  * - VOL2_Part1 section 2.5.11 Format Conversion (vertex fetch).
  86  * - VOL4_Part1 section 2.12.2.1.2 Sampler Output Channel Mapping.
  87  * - VOL4_Part1 section 3.9.11 Render Target Write.
  88  * - Render Target Surface Types [SKL+]
  89  */
  90 static const struct surface_format_info format_info[] = {
  91 /*    smpl filt  shad  CK   RT   AB   VB   SO color TW   TR  ccs_e */
  92    SF(  Y,  50,   x,   x,   Y,   Y,   Y,   Y,   x,  70,  90,  90,   R32G32B32A32_FLOAT)
  93    SF(  Y,   x,   x,   x,   Y,   x,   Y,   Y,   x,  70,  90,  90,   R32G32B32A32_SINT)
  94    SF(  Y,   x,   x,   x,   Y,   x,   Y,   Y,   x,  70,  90,  90,   R32G32B32A32_UINT)
  95    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R32G32B32A32_UNORM)
  96    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R32G32B32A32_SNORM)
  97    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R64G64_FLOAT)
  98    SF(  Y,  50,   x,   x, 100, 100,   x,   x,   x,   x,   x, 100,   R32G32B32X32_FLOAT)
  99    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R32G32B32A32_SSCALED)
 100    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R32G32B32A32_USCALED)
 101    SF(  x,   x,   x,   x,   x,   x,  75,   x,   x,   x,   x,   x,   R32G32B32A32_SFIXED)
 102    SF(  x,   x,   x,   x,   x,   x,  80,   x,   x,   x,   x,   x,   R64G64_PASSTHRU)
 103    SF(  Y,  50,   x,   x,   x,   x,   Y,   Y,   x,   x,   x,   x,   R32G32B32_FLOAT)
 104    SF(  Y,   x,   x,   x,   x,   x,   Y,   Y,   x,   x,   x,   x,   R32G32B32_SINT)
 105    SF(  Y,   x,   x,   x,   x,   x,   Y,   Y,   x,   x,   x,   x,   R32G32B32_UINT)
 106    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R32G32B32_UNORM)
 107    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R32G32B32_SNORM)
 108    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R32G32B32_SSCALED)
 109    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R32G32B32_USCALED)
 110    SF(  x,   x,   x,   x,   x,   x,  75,   x,   x,   x,   x,   x,   R32G32B32_SFIXED)
 111    SF(  Y,   Y,   x,   x,   Y,  45,   Y,   x,  60,  70,   x,  90,   R16G16B16A16_UNORM)
 112    SF(  Y,   Y,   x,   x,   Y,  60,   Y,   x,   x,  70,   x,  90,   R16G16B16A16_SNORM)
 113    SF(  Y,   x,   x,   x,   Y,   x,   Y,   x,   x,  70,  90,  90,   R16G16B16A16_SINT)
 114    SF(  Y,   x,   x,   x,   Y,   x,   Y,   x,   x,  70,  75,  90,   R16G16B16A16_UINT)
 115    SF(  Y,   Y,   x,   x,   Y,   Y,   Y,   x,   x,  70,  90,  90,   R16G16B16A16_FLOAT)
 116    SF(  Y,  50,   x,   x,   Y,   Y,   Y,   Y,   x,  70,  90,  90,   R32G32_FLOAT)
 117    SF(  Y,  70,   x,   x,   Y,   Y,   Y,   Y,   x,   x,   x,   x,   R32G32_FLOAT_LD)
 118    SF(  Y,   x,   x,   x,   Y,   x,   Y,   Y,   x,  70,  90,  90,   R32G32_SINT)
 119    SF(  Y,   x,   x,   x,   Y,   x,   Y,   Y,   x,  70,  90,  90,   R32G32_UINT)
 120    SF(  Y,  50,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   R32_FLOAT_X8X24_TYPELESS)
 121    SF(  Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   X32_TYPELESS_G8X24_UINT)
 122    SF(  Y,  50,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   L32A32_FLOAT)
 123    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R32G32_UNORM)
 124    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R32G32_SNORM)
 125    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R64_FLOAT)
 126    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   R16G16B16X16_UNORM)
 127    SF(  Y,   Y,   x,   x,  90,  90,   x,   x,   x,   x,   x,  90,   R16G16B16X16_FLOAT)
 128    SF(  Y,  50,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   A32X32_FLOAT)
 129    SF(  Y,  50,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   L32X32_FLOAT)
 130    SF(  Y,  50,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   I32X32_FLOAT)
 131    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R16G16B16A16_SSCALED)
 132    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R16G16B16A16_USCALED)
 133    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R32G32_SSCALED)
 134    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R32G32_USCALED)
 135    SF(  x,   x,   x,   x,   x,   x,  75,   x,   x,   x,   x,   x,   R32G32_SFIXED)
 136    SF(  x,   x,   x,   x,   x,   x,  80,   x,   x,   x,   x,   x,   R64_PASSTHRU)
 137    SF(  Y,   Y,   x,   Y,   Y,   Y,   Y,   x,  60,  70,   x,  90,   B8G8R8A8_UNORM)
 138    SF(  Y,   Y,   x,   x,   Y,   Y,   x,   x,   x,   x,   x, 100,   B8G8R8A8_UNORM_SRGB)
 139 /*    smpl filt  shad  CK   RT   AB   VB   SO color TW   TR  ccs_e */
 140    SF(  Y,   Y,   x,   x,   Y,   Y,   Y,   x,  60,  70,   x, 100,   R10G10B10A2_UNORM)
 141    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,  60,   x,   x,   x,   R10G10B10A2_UNORM_SRGB)
 142    SF(  Y,   x,   x,   x,   Y,   x,   Y,   x,   x,  70,   x, 100,   R10G10B10A2_UINT)
 143    SF(  Y,   Y,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R10G10B10_SNORM_A2_UNORM)
 144    SF(  Y,   Y,   x,   x,   Y,   Y,   Y,   x,  60,  70,   x,  90,   R8G8B8A8_UNORM)
 145    SF(  Y,   Y,   x,   x,   Y,   Y,   x,   x,  60,   x,   x, 100,   R8G8B8A8_UNORM_SRGB)
 146    SF(  Y,   Y,   x,   x,   Y,  60,   Y,   x,   x,  70,   x,  90,   R8G8B8A8_SNORM)
 147    SF(  Y,   x,   x,   x,   Y,   x,   Y,   x,   x,  70,  90,  90,   R8G8B8A8_SINT)
 148    SF(  Y,   x,   x,   x,   Y,   x,   Y,   x,   x,  70,  75,  90,   R8G8B8A8_UINT)
 149    SF(  Y,   Y,   x,   x,   Y,  45,   Y,   x,   x,  70,   x,  90,   R16G16_UNORM)
 150    SF(  Y,   Y,   x,   x,   Y,  60,   Y,   x,   x,  70,   x,  90,   R16G16_SNORM)
 151    SF(  Y,   x,   x,   x,   Y,   x,   Y,   x,   x,  70,  90,  90,   R16G16_SINT)
 152    SF(  Y,   x,   x,   x,   Y,   x,   Y,   x,   x,  70,  75,  90,   R16G16_UINT)
 153    SF(  Y,   Y,   x,   x,   Y,   Y,   Y,   x,   x,  70,  90,  90,   R16G16_FLOAT)
 154    SF(  Y,   Y,   x,   x,   Y,   Y,  75,   x,  60,  70,   x, 100,   B10G10R10A2_UNORM)
 155    SF(  Y,   Y,   x,   x,   Y,   Y,   x,   x,  60,   x,   x, 100,   B10G10R10A2_UNORM_SRGB)
 156    SF(  Y,   Y,   x,   x,   Y,   Y,   Y,   x,   x,  70,   x, 100,   R11G11B10_FLOAT)
 157    SF(  Y,   x,   x,   x,   Y,   x,   Y,   Y,   x,  70,  70,  90,   R32_SINT)
 158    SF(  Y,   x,   x,   x,   Y,   x,   Y,   Y,   x,  70,  70,  90,   R32_UINT)
 159    SF(  Y,  50,   Y,   x,   Y,   Y,   Y,   Y,   x,  70,  70,  90,   R32_FLOAT)
 160    SF(  Y,  50,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   R24_UNORM_X8_TYPELESS)
 161    SF(  Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   X24_TYPELESS_G8_UINT)
 162    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   L16A16_UNORM)
 163    SF(  Y,  50,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   I24X8_UNORM)
 164    SF(  Y,  50,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   L24X8_UNORM)
 165    SF(  Y,  50,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   A24X8_UNORM)
 166    SF(  Y,  50,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   I32_FLOAT)
 167    SF(  Y,  50,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   L32_FLOAT)
 168    SF(  Y,  50,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   A32_FLOAT)
 169    SF(  Y,   Y,   x,   Y,  80,  80,   x,   x,  60,   x,   x,  90,   B8G8R8X8_UNORM)
 170    SF(  Y,   Y,   x,   x,  80,  80,   x,   x,   x,   x,   x, 100,   B8G8R8X8_UNORM_SRGB)
 171    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   R8G8B8X8_UNORM)
 172    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   R8G8B8X8_UNORM_SRGB)
 173    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   R9G9B9E5_SHAREDEXP)
 174    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   B10G10R10X2_UNORM)
 175    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   L16A16_FLOAT)
 176    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R32_UNORM)
 177    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R32_SNORM)
 178 /*    smpl filt  shad  CK   RT   AB   VB   SO color TW   TR  ccs_e */
 179    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R10G10B10X2_USCALED)
 180    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R8G8B8A8_SSCALED)
 181    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R8G8B8A8_USCALED)
 182    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R16G16_SSCALED)
 183    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R16G16_USCALED)
 184    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R32_SSCALED)
 185    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R32_USCALED)
 186    SF(  Y,   Y,   x,   Y,   Y,   Y,   x,   x,   x,  70,   x,   x,   B5G6R5_UNORM)
 187    SF(  Y,   Y,   x,   x,   Y,   Y,   x,   x,   x,   x,   x,   x,   B5G6R5_UNORM_SRGB)
 188    SF(  Y,   Y,   x,   Y,   Y,   Y,   x,   x,   x,  70,   x,   x,   B5G5R5A1_UNORM)
 189    SF(  Y,   Y,   x,   x,   Y,   Y,   x,   x,   x,   x,   x,   x,   B5G5R5A1_UNORM_SRGB)
 190    SF(  Y,   Y,   x,   Y,   Y,   Y,   x,   x,   x,  70,   x,   x,   B4G4R4A4_UNORM)
 191    SF(  Y,   Y,   x,   x,   Y,   Y,   x,   x,   x,   x,   x,   x,   B4G4R4A4_UNORM_SRGB)
 192    SF(  Y,   Y,   x,   x,   Y,   Y,   Y,   x,   x,  70,   x,   x,   R8G8_UNORM)
 193    SF(  Y,   Y,   x,   Y,   Y,  60,   Y,   x,   x,  70,   x,   x,   R8G8_SNORM)
 194    SF(  Y,   x,   x,   x,   Y,   x,   Y,   x,   x,  70,  90,   x,   R8G8_SINT)
 195    SF(  Y,   x,   x,   x,   Y,   x,   Y,   x,   x,  70,  75,   x,   R8G8_UINT)
 196    SF(  Y,   Y,   Y,   x,   Y,  45,   Y,   x,  70,  70,   x,   x,   R16_UNORM)
 197    SF(  Y,   Y,   x,   x,   Y,  60,   Y,   x,   x,  70,   x,   x,   R16_SNORM)
 198    SF(  Y,   x,   x,   x,   Y,   x,   Y,   x,   x,  70,  90,   x,   R16_SINT)
 199    SF(  Y,   x,   x,   x,   Y,   x,   Y,   x,   x,  70,  75,   x,   R16_UINT)
 200    SF(  Y,   Y,   x,   x,   Y,   Y,   Y,   x,   x,  70,  90,   x,   R16_FLOAT)
 201    SF( 50,  50,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   A8P8_UNORM_PALETTE0)
 202    SF( 50,  50,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   A8P8_UNORM_PALETTE1)
 203    SF(  Y,   Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   I16_UNORM)
 204    SF(  Y,   Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   L16_UNORM)
 205    SF(  Y,   Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   A16_UNORM)
 206    SF(  Y,   Y,   x,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   L8A8_UNORM)
 207    SF(  Y,   Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   I16_FLOAT)
 208    SF(  Y,   Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   L16_FLOAT)
 209    SF(  Y,   Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   A16_FLOAT)
 210    SF( 45,  45,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   L8A8_UNORM_SRGB)
 211    SF(  Y,   Y,   x,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   R5G5_SNORM_B6_UNORM)
 212    SF(  x,   x,   x,   x,   Y,   Y,   x,   x,   x,  70,   x,   x,   B5G5R5X1_UNORM)
 213    SF(  x,   x,   x,   x,   Y,   Y,   x,   x,   x,   x,   x,   x,   B5G5R5X1_UNORM_SRGB)
 214    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R8G8_SSCALED)
 215    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R8G8_USCALED)
 216 /*    smpl filt  shad  CK   RT   AB   VB   SO color TW   TR  ccs_e */
 217    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R16_SSCALED)
 218    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R16_USCALED)
 219    SF( 50,  50,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   P8A8_UNORM_PALETTE0)
 220    SF( 50,  50,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   P8A8_UNORM_PALETTE1)
 221    SF(  x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   A1B5G5R5_UNORM)
 222    /* According to the PRM, A4B4G4R4_UNORM isn't supported until Sky Lake
 223     * but empirical testing indicates that at least sampling works just fine
 224     * on Broadwell.
 225     */
 226    SF( 80,  80,   x,   x,  90,   x,   x,   x,   x,   x,   x,   x,   A4B4G4R4_UNORM)
 227    SF( 90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   L8A8_UINT)
 228    SF( 90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   L8A8_SINT)
 229    SF(  Y,   Y,   x,  45,   Y,   Y,   Y,   x,   x,  70,   x,   x,   R8_UNORM)
 230    SF(  Y,   Y,   x,   x,   Y,  60,   Y,   x,   x,  70,   x,   x,   R8_SNORM)
 231    SF(  Y,   x,   x,   x,   Y,   x,   Y,   x,   x,  70,  90,   x,   R8_SINT)
 232    SF(  Y,   x,   x,   x,   Y,   x,   Y,   x,   x,  70,  75,   x,   R8_UINT)
 233    SF(  Y,   Y,   x,   Y,   Y,   Y,   x,   x,   x,  70,   x,   x,   A8_UNORM)
 234    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   I8_UNORM)
 235    SF(  Y,   Y,   x,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   L8_UNORM)
 236    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   P4A4_UNORM_PALETTE0)
 237    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   A4P4_UNORM_PALETTE0)
 238    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R8_SSCALED)
 239    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R8_USCALED)
 240    SF( 45,  45,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   P8_UNORM_PALETTE0)
 241    SF( 45,  45,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   L8_UNORM_SRGB)
 242    SF( 45,  45,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   P8_UNORM_PALETTE1)
 243    SF( 45,  45,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   P4A4_UNORM_PALETTE1)
 244    SF( 45,  45,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   A4P4_UNORM_PALETTE1)
 245    SF(  x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   Y8_UNORM)
 246    SF( 90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   L8_UINT)
 247    SF( 90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   L8_SINT)
 248    SF( 90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   I8_UINT)
 249    SF( 90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   I8_SINT)
 250    SF( 45,  45,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   DXT1_RGB_SRGB)
 251    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   R1_UNORM)
 252    SF(  Y,   Y,   x,   Y,   Y,   x,   x,   x,  60,   x,   x,   x,   YCRCB_NORMAL)
 253    SF(  Y,   Y,   x,   Y,   Y,   x,   x,   x,  60,   x,   x,   x,   YCRCB_SWAPUVY)
 254    SF( 45,  45,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   P2_UNORM_PALETTE0)
 255    SF( 45,  45,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   P2_UNORM_PALETTE1)
 256    SF(  Y,   Y,   x,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   BC1_UNORM)
 257    SF(  Y,   Y,   x,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   BC2_UNORM)
 258    SF(  Y,   Y,   x,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   BC3_UNORM)
 259    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   BC4_UNORM)
 260    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   BC5_UNORM)
 261    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   BC1_UNORM_SRGB)
 262    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   BC2_UNORM_SRGB)
 263    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   BC3_UNORM_SRGB)
 264    SF(  Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   MONO8)
 265    SF(  Y,   Y,   x,   x,   Y,   x,   x,   x,  60,   x,   x,   x,   YCRCB_SWAPUV)
 266    SF(  Y,   Y,   x,   x,   Y,   x,   x,   x,  60,   x,   x,   x,   YCRCB_SWAPY)
 267    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   DXT1_RGB)
 268 /*    smpl filt  shad  CK   RT   AB   VB   SO color TW   TR  ccs_e */
 269    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   FXT1)
 270    SF( 75,  75,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R8G8B8_UNORM)
 271    SF( 75,  75,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R8G8B8_SNORM)
 272    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R8G8B8_SSCALED)
 273    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R8G8B8_USCALED)
 274    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R64G64B64A64_FLOAT)
 275    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R64G64B64_FLOAT)
 276    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   BC4_SNORM)
 277    SF(  Y,   Y,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   BC5_SNORM)
 278    SF( 50,  50,   x,   x,   x,   x,  60,   x,   x,   x,   x,   x,   R16G16B16_FLOAT)
 279    SF( 75,  75,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R16G16B16_UNORM)
 280    SF( 75,  75,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R16G16B16_SNORM)
 281    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R16G16B16_SSCALED)
 282    SF(  x,   x,   x,   x,   x,   x,   Y,   x,   x,   x,   x,   x,   R16G16B16_USCALED)
 283    SF( 70,  70,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   BC6H_SF16)
 284    SF( 70,  70,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   BC7_UNORM)
 285    SF( 70,  70,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   BC7_UNORM_SRGB)
 286    SF( 70,  70,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   BC6H_UF16)
 287    SF(  x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   PLANAR_420_8)
 288    SF( 75,  75,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   R8G8B8_UNORM_SRGB)
 289    SF( 80,  80,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ETC1_RGB8)
 290    SF( 80,  80,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ETC2_RGB8)
 291    SF( 80,  80,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   EAC_R11)
 292    SF( 80,  80,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   EAC_RG11)
 293    SF( 80,  80,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   EAC_SIGNED_R11)
 294    SF( 80,  80,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   EAC_SIGNED_RG11)
 295    SF( 80,  80,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ETC2_SRGB8)
 296    SF( 90,   x,   x,   x,   x,   x,  75,   x,   x,   x,   x,   x,   R16G16B16_UINT)
 297    SF( 90,   x,   x,   x,   x,   x,  75,   x,   x,   x,   x,   x,   R16G16B16_SINT)
 298    SF(  x,   x,   x,   x,   x,   x,  75,   x,   x,   x,   x,   x,   R32_SFIXED)
 299    SF(  x,   x,   x,   x,   x,   x,  75,   x,   x,   x,   x,   x,   R10G10B10A2_SNORM)
 300    SF(  x,   x,   x,   x,   x,   x,  75,   x,   x,   x,   x,   x,   R10G10B10A2_USCALED)
 301    SF(  x,   x,   x,   x,   x,   x,  75,   x,   x,   x,   x,   x,   R10G10B10A2_SSCALED)
 302    SF(  x,   x,   x,   x,   x,   x,  75,   x,   x,   x,   x,   x,   R10G10B10A2_SINT)
 303    SF(  x,   x,   x,   x,   x,   x,  75,   x,   x,   x,   x,   x,   B10G10R10A2_SNORM)
 304    SF(  x,   x,   x,   x,   x,   x,  75,   x,   x,   x,   x,   x,   B10G10R10A2_USCALED)
 305    SF(  x,   x,   x,   x,   x,   x,  75,   x,   x,   x,   x,   x,   B10G10R10A2_SSCALED)
 306    SF(  x,   x,   x,   x,   x,   x,  75,   x,   x,   x,   x,   x,   B10G10R10A2_UINT)
 307    SF(  x,   x,   x,   x,   x,   x,  75,   x,   x,   x,   x,   x,   B10G10R10A2_SINT)
 308    SF(  x,   x,   x,   x,   x,   x,  80,   x,   x,   x,   x,   x,   R64G64B64A64_PASSTHRU)
 309    SF(  x,   x,   x,   x,   x,   x,  80,   x,   x,   x,   x,   x,   R64G64B64_PASSTHRU)
 310    SF( 80,  80,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ETC2_RGB8_PTA)
 311    SF( 80,  80,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ETC2_SRGB8_PTA)
 312    SF( 80,  80,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ETC2_EAC_RGBA8)
 313    SF( 80,  80,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ETC2_EAC_SRGB8_A8)
 314    SF( 90,   x,   x,   x,   x,   x,  75,   x,   x,   x,   x,   x,   R8G8B8_UINT)
 315    SF( 90,   x,   x,   x,   x,   x,  75,   x,   x,   x,   x,   x,   R8G8B8_SINT)
 316    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_4X4_FLT16)
 317    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_5X4_FLT16)
 318    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_5X5_FLT16)
 319    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_6X5_FLT16)
 320    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_6X6_FLT16)
 321    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_8X5_FLT16)
 322    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_8X6_FLT16)
 323    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_8X8_FLT16)
 324    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_10X5_FLT16)
 325    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_10X6_FLT16)
 326    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_10X8_FLT16)
 327    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_10X10_FLT16)
 328    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_12X10_FLT16)
 329    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_12X12_FLT16)
 330    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_4X4_U8SRGB)
 331    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_5X4_U8SRGB)
 332    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_5X5_U8SRGB)
 333    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_6X5_U8SRGB)
 334    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_6X6_U8SRGB)
 335    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_8X5_U8SRGB)
 336    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_8X6_U8SRGB)
 337    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_8X8_U8SRGB)
 338    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_10X5_U8SRGB)
 339    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_10X6_U8SRGB)
 340    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_10X8_U8SRGB)
 341    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_10X10_U8SRGB)
 342    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_12X10_U8SRGB)
 343    SF( 90,  90,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_LDR_2D_12X12_U8SRGB)
 344    SF(100, 100,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_HDR_2D_4X4_FLT16)
 345    SF(100, 100,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_HDR_2D_5X4_FLT16)
 346    SF(100, 100,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_HDR_2D_5X5_FLT16)
 347    SF(100, 100,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_HDR_2D_6X5_FLT16)
 348    SF(100, 100,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_HDR_2D_6X6_FLT16)
 349    SF(100, 100,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_HDR_2D_8X5_FLT16)
 350    SF(100, 100,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_HDR_2D_8X6_FLT16)
 351    SF(100, 100,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_HDR_2D_8X8_FLT16)
 352    SF(100, 100,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_HDR_2D_10X5_FLT16)
 353    SF(100, 100,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_HDR_2D_10X6_FLT16)
 354    SF(100, 100,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_HDR_2D_10X8_FLT16)
 355    SF(100, 100,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_HDR_2D_10X10_FLT16)
 356    SF(100, 100,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_HDR_2D_12X10_FLT16)
 357    SF(100, 100,   x,   x,   x,   x,   x,   x,   x,   x,   x,   x,   ASTC_HDR_2D_12X12_FLT16)
 358 };
 359 #undef x
 360 #undef Y
 361
 362 static unsigned
 363 format_gen(const struct gen_device_info *devinfo)
 364 {
 365    return devinfo->gen * 10 + (devinfo->is_g4x || devinfo->is_haswell) * 5;
 366 }
 367
 368 bool
 369 isl_format_supports_rendering(const struct gen_device_info *devinfo,
 370                               enum isl_format format)
 371 {
 372    if (!format_info[format].exists)
 373       return false;
 374
 375    return format_gen(devinfo) >= format_info[format].render_target;
 376 }
 377
 378 bool
 379 isl_format_supports_alpha_blending(const struct gen_device_info *devinfo,
 380                                    enum isl_format format)
 381 {
 382    if (!format_info[format].exists)
 383       return false;
 384
 385    return format_gen(devinfo) >= format_info[format].alpha_blend;
 386 }
 387
 388 bool
 389 isl_format_supports_sampling(const struct gen_device_info *devinfo,
 390                              enum isl_format format)
 391 {
 392    if (!format_info[format].exists)
 393       return false;
 394
 395    if (devinfo->is_baytrail) {
 396       const struct isl_format_layout *fmtl = isl_format_get_layout(format);
 397       /* Support for ETC1 and ETC2 exists on Bay Trail even though big-core
 398        * GPUs didn't get it until Broadwell.
 399        */
 400       if (fmtl->txc == ISL_TXC_ETC1 || fmtl->txc == ISL_TXC_ETC2)
 401          return true;
 402    } else if (devinfo->is_cherryview) {
 403       const struct isl_format_layout *fmtl = isl_format_get_layout(format);
 404       /* Support for ASTC LDR exists on Cherry View even though big-core
 405        * GPUs didn't get it until Skylake.
 406        */
 407       if (fmtl->txc == ISL_TXC_ASTC)
 408          return format < ISL_FORMAT_ASTC_HDR_2D_4X4_FLT16;
 409    } else if (gen_device_info_is_9lp(devinfo)) {
 410       const struct isl_format_layout *fmtl = isl_format_get_layout(format);
 411       /* Support for ASTC HDR exists on Broxton even though big-core
 412        * GPUs didn't get it until Cannonlake.
 413        */
 414       if (fmtl->txc == ISL_TXC_ASTC)
 415          return true;
 416    }
 417
 418    return format_gen(devinfo) >= format_info[format].sampling;
 419 }
 420
 421 bool
 422 isl_format_supports_filtering(const struct gen_device_info *devinfo,
 423                               enum isl_format format)
 424 {
 425    if (!format_info[format].exists)
 426       return false;
 427
 428    if (devinfo->is_baytrail) {
 429       const struct isl_format_layout *fmtl = isl_format_get_layout(format);
 430       /* Support for ETC1 and ETC2 exists on Bay Trail even though big-core
 431        * GPUs didn't get it until Broadwell.
 432        */
 433       if (fmtl->txc == ISL_TXC_ETC1 || fmtl->txc == ISL_TXC_ETC2)
 434          return true;
 435    } else if (devinfo->is_cherryview) {
 436       const struct isl_format_layout *fmtl = isl_format_get_layout(format);
 437       /* Support for ASTC LDR exists on Cherry View even though big-core
 438        * GPUs didn't get it until Skylake.
 439        */
 440       if (fmtl->txc == ISL_TXC_ASTC)
 441          return format < ISL_FORMAT_ASTC_HDR_2D_4X4_FLT16;
 442    } else if (gen_device_info_is_9lp(devinfo)) {
 443       const struct isl_format_layout *fmtl = isl_format_get_layout(format);
 444       /* Support for ASTC HDR exists on Broxton even though big-core
 445        * GPUs didn't get it until Cannonlake.
 446        */
 447       if (fmtl->txc == ISL_TXC_ASTC)
 448          return true;
 449    }
 450
 451    return format_gen(devinfo) >= format_info[format].filtering;
 452 }
 453
 454 bool
 455 isl_format_supports_vertex_fetch(const struct gen_device_info *devinfo,
 456                                  enum isl_format format)
 457 {
 458    if (!format_info[format].exists)
 459       return false;
 460
 461    /* For vertex fetch, Bay Trail supports the same set of formats as Haswell
 462     * but is a superset of Ivy Bridge.
 463     */
 464    if (devinfo->is_baytrail)
 465       return 75 >= format_info[format].input_vb;
 466
 467    return format_gen(devinfo) >= format_info[format].input_vb;
 468 }
 469
 470 /**
 471  * Returns true if the given format can support typed writes.
 472  */
 473 bool
 474 isl_format_supports_typed_writes(const struct gen_device_info *devinfo,
 475                                  enum isl_format format)
 476 {
 477    if (!format_info[format].exists)
 478       return false;
 479
 480    return format_gen(devinfo) >= format_info[format].typed_write;
 481 }
 482
 483
 484 /**
 485  * Returns true if the given format can support typed reads with format
 486  * conversion fully handled by hardware.  On Sky Lake, all formats which are
 487  * supported for typed writes also support typed reads but some of them return
 488  * the raw image data and don't provide format conversion.
 489  *
 490  * For anyone looking to find this data in the PRM, the easiest way to find
 491  * format tables is to search for R11G11B10.  There are only a few
 492  * occurrences.
 493  */
 494 bool
 495 isl_format_supports_typed_reads(const struct gen_device_info *devinfo,
 496                                 enum isl_format format)
 497 {
 498    if (!format_info[format].exists)
 499       return false;
 500
 501    return format_gen(devinfo) >= format_info[format].typed_read;
 502 }
 503
 504 /**
 505  * Returns true if the given format can support single-sample fast clears.
 506  * This function only checks the format.  In order to determine if a surface
 507  * supports CCS_E, several other factors need to be considered such as tiling
 508  * and sample count.  See isl_surf_get_ccs_surf for details.
 509  */
 510 bool
 511 isl_format_supports_ccs_d(const struct gen_device_info *devinfo,
 512                           enum isl_format format)
 513 {
 514    /* Fast clears were first added on Ivy Bridge */
 515    if (devinfo->gen < 7)
 516       return false;
 517
 518    if (!isl_format_supports_rendering(devinfo, format))
 519       return false;
 520
 521    const struct isl_format_layout *fmtl = isl_format_get_layout(format);
 522
 523    return fmtl->bpb == 32 || fmtl->bpb == 64 || fmtl->bpb == 128;
 524 }
 525
 526 /**
 527  * Returns true if the given format can support single-sample color
 528  * compression.  This function only checks the format.  In order to determine
 529  * if a surface supports CCS_E, several other factors need to be considered
 530  * such as tiling and sample count.  See isl_surf_get_ccs_surf for details.
 531  */
 532 bool
 533 isl_format_supports_ccs_e(const struct gen_device_info *devinfo,
 534                           enum isl_format format)
 535 {
 536    if (!format_info[format].exists)
 537       return false;
 538
 539    /* For simplicity, only report that a format supports CCS_E if blorp can
 540     * perform bit-for-bit copies with an image of that format while compressed.
 541     * This allows ISL users to avoid having to resolve the image before
 542     * performing such a copy. We may want to change this behavior in the
 543     * future.
 544     *
 545     * R11G11B10_FLOAT has no equivalent UINT format. Given how blorp_copy
 546     * currently works, bit-for-bit copy operations are not possible without an
 547     * intermediate resolve.
 548     */
 549    if (format == ISL_FORMAT_R11G11B10_FLOAT)
 550       return false;
 551
 552    /* blorp_copy currently doesn't support formats with different bit-widths
 553     * per-channel. Until that support is added, report that these formats don't
 554     * support CCS_E. FIXME: Add support for these formats.
 555     */
 556    if (format == ISL_FORMAT_B10G10R10A2_UNORM ||
 557        format == ISL_FORMAT_B10G10R10A2_UNORM_SRGB ||
 558        format == ISL_FORMAT_R10G10B10A2_UNORM ||
 559        format == ISL_FORMAT_R10G10B10A2_UINT) {
 560       return false;
 561    }
 562
 563    return format_gen(devinfo) >= format_info[format].ccs_e;
 564 }
 565
 566 bool
 567 isl_format_supports_multisampling(const struct gen_device_info *devinfo,
 568                                   enum isl_format format)
 569 {
 570    /* From the Sandybridge PRM, Volume 4 Part 1 p72, SURFACE_STATE, Surface
 571     * Format:
 572     *
 573     *    If Number of Multisamples is set to a value other than
 574     *    MULTISAMPLECOUNT_1, this field cannot be set to the following
 575     *    formats:
 576     *
 577     *       - any format with greater than 64 bits per element
 578     *       - any compressed texture format (BC*)
 579     *       - any YCRCB* format
 580     *
 581     * The restriction on the format's size is removed on Broadwell. Moreover,
 582     * empirically it looks that even IvyBridge can handle multisampled surfaces
 583     * with format sizes all the way to 128-bits (RGBA32F, RGBA32I, RGBA32UI).
 584     *
 585     * Also, there is an exception for HiZ which we treat as a compressed
 586     * format and is allowed to be multisampled on Broadwell and earlier.
 587     */
 588    if (format == ISL_FORMAT_HIZ) {
 589       /* On SKL+, HiZ is always single-sampled even when the primary surface
 590        * is multisampled.  See also isl_surf_get_hiz_surf().
 591        */
 592       return devinfo->gen <= 8;
 593    } else if (devinfo->gen < 7 && isl_format_get_layout(format)->bpb > 64) {
 594       return false;
 595    } else if (isl_format_is_compressed(format)) {
 596       return false;
 597    } else if (isl_format_is_yuv(format)) {
 598       return false;
 599    } else {
 600       return true;
 601    }
 602 }
 603
 604 /**
 605  * Returns true if the two formats are "CCS_E compatible" meaning that you can
 606  * render in one format with CCS_E enabled and then texture using the other
 607  * format without needing a resolve.
 608  *
 609  * Note: Even if the formats are compatible, special care must be taken if a
 610  * clear color is involved because the encoding of the clear color is heavily
 611  * format-dependent.
 612  */
 613 bool
 614 isl_formats_are_ccs_e_compatible(const struct gen_device_info *devinfo,
 615                                  enum isl_format format1,
 616                                  enum isl_format format2)
 617 {
 618    /* They must support CCS_E */
 619    if (!isl_format_supports_ccs_e(devinfo, format1) ||
 620        !isl_format_supports_ccs_e(devinfo, format2))
 621       return false;
 622
 623    const struct isl_format_layout *fmtl1 = isl_format_get_layout(format1);
 624    const struct isl_format_layout *fmtl2 = isl_format_get_layout(format2);
 625
 626    /* The compression used by CCS is not dependent on the actual data encoding
 627     * of the format but only depends on the bit-layout of the channels.
 628     */
 629    return fmtl1->channels.r.bits == fmtl2->channels.r.bits &&
 630           fmtl1->channels.g.bits == fmtl2->channels.g.bits &&
 631           fmtl1->channels.b.bits == fmtl2->channels.b.bits &&
 632           fmtl1->channels.a.bits == fmtl2->channels.a.bits;
 633 }
 634
 635 static bool
 636 isl_format_has_channel_type(enum isl_format fmt, enum isl_base_type type)
 637 {
 638    const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
 639
 640    return fmtl->channels.r.type == type ||
 641           fmtl->channels.g.type == type ||
 642           fmtl->channels.b.type == type ||
 643           fmtl->channels.a.type == type ||
 644           fmtl->channels.l.type == type ||
 645           fmtl->channels.i.type == type ||
 646           fmtl->channels.p.type == type;
 647 }
 648
 649 bool
 650 isl_format_has_unorm_channel(enum isl_format fmt)
 651 {
 652    return isl_format_has_channel_type(fmt, ISL_UNORM);
 653 }
 654
 655 bool
 656 isl_format_has_snorm_channel(enum isl_format fmt)
 657 {
 658    return isl_format_has_channel_type(fmt, ISL_SNORM);
 659 }
 660
 661 bool
 662 isl_format_has_ufloat_channel(enum isl_format fmt)
 663 {
 664    return isl_format_has_channel_type(fmt, ISL_UFLOAT);
 665 }
 666
 667 bool
 668 isl_format_has_sfloat_channel(enum isl_format fmt)
 669 {
 670    return isl_format_has_channel_type(fmt, ISL_SFLOAT);
 671 }
 672
 673 bool
 674 isl_format_has_uint_channel(enum isl_format fmt)
 675 {
 676    return isl_format_has_channel_type(fmt, ISL_UINT);
 677 }
 678
 679 bool
 680 isl_format_has_sint_channel(enum isl_format fmt)
 681 {
 682    return isl_format_has_channel_type(fmt, ISL_SINT);
 683 }
 684
 685 unsigned
 686 isl_format_get_num_channels(enum isl_format fmt)
 687 {
 688    const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
 689
 690    assert(fmtl->channels.p.bits == 0);
 691
 692    return (fmtl->channels.r.bits > 0) +
 693           (fmtl->channels.g.bits > 0) +
 694           (fmtl->channels.b.bits > 0) +
 695           (fmtl->channels.a.bits > 0) +
 696           (fmtl->channels.l.bits > 0) +
 697           (fmtl->channels.i.bits > 0);
 698 }
 699
 700 uint32_t
 701 isl_format_get_depth_format(enum isl_format fmt, bool has_stencil)
 702 {
 703    switch (fmt) {
 704    default:
 705       unreachable("bad isl depth format");
 706    case ISL_FORMAT_R32_FLOAT_X8X24_TYPELESS:
 707       assert(has_stencil);
 708       return 0; /* D32_FLOAT_S8X24_UINT */
 709    case ISL_FORMAT_R32_FLOAT:
 710       assert(!has_stencil);
 711       return 1; /* D32_FLOAT */
 712    case ISL_FORMAT_R24_UNORM_X8_TYPELESS:
 713       if (has_stencil) {
 714          return 2; /* D24_UNORM_S8_UINT */
 715       } else {
 716          return 3; /* D24_UNORM_X8_UINT */
 717       }
 718    case ISL_FORMAT_R16_UNORM:
 719       assert(!has_stencil);
 720       return 5; /* D16_UNORM */
 721    }
 722 }
 723
 724 enum isl_format
 725 isl_format_rgb_to_rgba(enum isl_format rgb)
 726 {
 727    assert(isl_format_is_rgb(rgb));
 728
 729    switch (rgb) {
 730    case ISL_FORMAT_R32G32B32_FLOAT:    return ISL_FORMAT_R32G32B32A32_FLOAT;
 731    case ISL_FORMAT_R32G32B32_SINT:     return ISL_FORMAT_R32G32B32A32_SINT;
 732    case ISL_FORMAT_R32G32B32_UINT:     return ISL_FORMAT_R32G32B32A32_UINT;
 733    case ISL_FORMAT_R32G32B32_UNORM:    return ISL_FORMAT_R32G32B32A32_UNORM;
 734    case ISL_FORMAT_R32G32B32_SNORM:    return ISL_FORMAT_R32G32B32A32_SNORM;
 735    case ISL_FORMAT_R32G32B32_SSCALED:  return ISL_FORMAT_R32G32B32A32_SSCALED;
 736    case ISL_FORMAT_R32G32B32_USCALED:  return ISL_FORMAT_R32G32B32A32_USCALED;
 737    case ISL_FORMAT_R32G32B32_SFIXED:   return ISL_FORMAT_R32G32B32A32_SFIXED;
 738    case ISL_FORMAT_R8G8B8_UNORM:       return ISL_FORMAT_R8G8B8A8_UNORM;
 739    case ISL_FORMAT_R8G8B8_SNORM:       return ISL_FORMAT_R8G8B8A8_SNORM;
 740    case ISL_FORMAT_R8G8B8_SSCALED:     return ISL_FORMAT_R8G8B8A8_SSCALED;
 741    case ISL_FORMAT_R8G8B8_USCALED:     return ISL_FORMAT_R8G8B8A8_USCALED;
 742    case ISL_FORMAT_R16G16B16_FLOAT:    return ISL_FORMAT_R16G16B16A16_FLOAT;
 743    case ISL_FORMAT_R16G16B16_UNORM:    return ISL_FORMAT_R16G16B16A16_UNORM;
 744    case ISL_FORMAT_R16G16B16_SNORM:    return ISL_FORMAT_R16G16B16A16_SNORM;
 745    case ISL_FORMAT_R16G16B16_SSCALED:  return ISL_FORMAT_R16G16B16A16_SSCALED;
 746    case ISL_FORMAT_R16G16B16_USCALED:  return ISL_FORMAT_R16G16B16A16_USCALED;
 747    case ISL_FORMAT_R8G8B8_UNORM_SRGB:  return ISL_FORMAT_R8G8B8A8_UNORM_SRGB;
 748    case ISL_FORMAT_R16G16B16_UINT:     return ISL_FORMAT_R16G16B16A16_UINT;
 749    case ISL_FORMAT_R16G16B16_SINT:     return ISL_FORMAT_R16G16B16A16_SINT;
 750    case ISL_FORMAT_R8G8B8_UINT:        return ISL_FORMAT_R8G8B8A8_UINT;
 751    case ISL_FORMAT_R8G8B8_SINT:        return ISL_FORMAT_R8G8B8A8_SINT;
 752    default:
 753       return ISL_FORMAT_UNSUPPORTED;
 754    }
 755 }
 756
 757 enum isl_format
 758 isl_format_rgb_to_rgbx(enum isl_format rgb)
 759 {
 760    assert(isl_format_is_rgb(rgb));
 761
 762    switch (rgb) {
 763    case ISL_FORMAT_R32G32B32_FLOAT:
 764       return ISL_FORMAT_R32G32B32X32_FLOAT;
 765    case ISL_FORMAT_R16G16B16_UNORM:
 766       return ISL_FORMAT_R16G16B16X16_UNORM;
 767    case ISL_FORMAT_R16G16B16_FLOAT:
 768       return ISL_FORMAT_R16G16B16X16_FLOAT;
 769    case ISL_FORMAT_R8G8B8_UNORM:
 770       return ISL_FORMAT_R8G8B8X8_UNORM;
 771    case ISL_FORMAT_R8G8B8_UNORM_SRGB:
 772       return ISL_FORMAT_R8G8B8X8_UNORM_SRGB;
 773    default:
 774       return ISL_FORMAT_UNSUPPORTED;
 775    }
 776 }