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 "brw_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 lossless_compression;
  41 };
  42
  43 /* This macro allows us to write the table almost as it appears in the PRM,
  44  * while restructuring it to turn it into the C code we want.
  45  */
  46 #define SF(sampl, filt, shad, ck, rt, ab, vb, so, color, ccs_e, sf) \
  47    [ISL_FORMAT_##sf] = { true, sampl, filt, shad, ck, rt, ab, vb, so, color, ccs_e},
  48
  49 #define Y 0
  50 #define x 255
  51 /**
  52  * This is the table of support for surface (texture, renderbuffer, and vertex
  53  * buffer, but not depthbuffer) formats across the various hardware generations.
  54  *
  55  * The table is formatted to match the documentation, except that the docs have
  56  * this ridiculous mapping of Y[*+~^#&] for "supported on DevWhatever".  To put
  57  * it in our table, here's the mapping:
  58  *
  59  * Y*: 45
  60  * Y+: 45 (g45/gm45)
  61  * Y~: 50 (gen5)
  62  * Y^: 60 (gen6)
  63  * Y#: 70 (gen7)
  64  *
  65  * The abbreviations in the header below are:
  66  * smpl  - Sampling Engine
  67  * filt  - Sampling Engine Filtering
  68  * shad  - Sampling Engine Shadow Map
  69  * CK    - Sampling Engine Chroma Key
  70  * RT    - Render Target
  71  * AB    - Alpha Blend Render Target
  72  * VB    - Input Vertex Buffer
  73  * SO    - Steamed Output Vertex Buffers (transform feedback)
  74  * color - Color Processing
  75  * ccs_e - Lossless Compression Support (gen9+ only)
  76  * sf    - Surface Format
  77  *
  78  * See page 88 of the Sandybridge PRM VOL4_Part1 PDF.
  79  *
  80  * As of Ivybridge, the columns are no longer in that table and the
  81  * information can be found spread across:
  82  *
  83  * - VOL2_Part1 section 2.5.11 Format Conversion (vertex fetch).
  84  * - VOL4_Part1 section 2.12.2.1.2 Sampler Output Channel Mapping.
  85  * - VOL4_Part1 section 3.9.11 Render Target Write.
  86  * - Render Target Surface Types [SKL+]
  87  */
  88 static const struct surface_format_info format_info[] = {
  89 /* smpl filt shad CK  RT  AB  VB  SO  color ccs_e */
  90    SF( Y, 50,  x,  x,  Y,  Y,  Y,  Y,  x,   90,   R32G32B32A32_FLOAT)
  91    SF( Y,  x,  x,  x,  Y,  x,  Y,  Y,  x,   90,   R32G32B32A32_SINT)
  92    SF( Y,  x,  x,  x,  Y,  x,  Y,  Y,  x,   90,   R32G32B32A32_UINT)
  93    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32B32A32_UNORM)
  94    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32B32A32_SNORM)
  95    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R64G64_FLOAT)
  96    SF( Y, 50,  x,  x,  x,  x,  x,  x,  x,    x,   R32G32B32X32_FLOAT)
  97    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32B32A32_SSCALED)
  98    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32B32A32_USCALED)
  99    SF( x,  x,  x,  x,  x,  x, 75,  x,  x,    x,   R32G32B32A32_SFIXED)
 100    SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   R64G64_PASSTHRU)
 101    SF( Y, 50,  x,  x,  x,  x,  Y,  Y,  x,    x,   R32G32B32_FLOAT)
 102    SF( Y,  x,  x,  x,  x,  x,  Y,  Y,  x,    x,   R32G32B32_SINT)
 103    SF( Y,  x,  x,  x,  x,  x,  Y,  Y,  x,    x,   R32G32B32_UINT)
 104    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32B32_UNORM)
 105    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32B32_SNORM)
 106    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32B32_SSCALED)
 107    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32B32_USCALED)
 108    SF( x,  x,  x,  x,  x,  x, 75,  x,  x,    x,   R32G32B32_SFIXED)
 109    SF( Y,  Y,  x,  x,  Y, 45,  Y,  x, 60,   90,   R16G16B16A16_UNORM)
 110    SF( Y,  Y,  x,  x,  Y, 60,  Y,  x,  x,   90,   R16G16B16A16_SNORM)
 111    SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,   90,   R16G16B16A16_SINT)
 112    SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,   90,   R16G16B16A16_UINT)
 113    SF( Y,  Y,  x,  x,  Y,  Y,  Y,  x,  x,   90,   R16G16B16A16_FLOAT)
 114    SF( Y, 50,  x,  x,  Y,  Y,  Y,  Y,  x,   90,   R32G32_FLOAT)
 115    SF( Y, 70,  x,  x,  Y,  Y,  Y,  Y,  x,    x,   R32G32_FLOAT_LD)
 116    SF( Y,  x,  x,  x,  Y,  x,  Y,  Y,  x,   90,   R32G32_SINT)
 117    SF( Y,  x,  x,  x,  Y,  x,  Y,  Y,  x,   90,   R32G32_UINT)
 118    SF( Y, 50,  Y,  x,  x,  x,  x,  x,  x,    x,   R32_FLOAT_X8X24_TYPELESS)
 119    SF( Y,  x,  x,  x,  x,  x,  x,  x,  x,    x,   X32_TYPELESS_G8X24_UINT)
 120    SF( Y, 50,  x,  x,  x,  x,  x,  x,  x,    x,   L32A32_FLOAT)
 121    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32_UNORM)
 122    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32_SNORM)
 123    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R64_FLOAT)
 124    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   R16G16B16X16_UNORM)
 125    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,   90,   R16G16B16X16_FLOAT)
 126    SF( Y, 50,  x,  x,  x,  x,  x,  x,  x,    x,   A32X32_FLOAT)
 127    SF( Y, 50,  x,  x,  x,  x,  x,  x,  x,    x,   L32X32_FLOAT)
 128    SF( Y, 50,  x,  x,  x,  x,  x,  x,  x,    x,   I32X32_FLOAT)
 129    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R16G16B16A16_SSCALED)
 130    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R16G16B16A16_USCALED)
 131    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32_SSCALED)
 132    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32_USCALED)
 133    SF( x,  x,  x,  x,  x,  x, 75,  x,  x,    x,   R32G32_SFIXED)
 134    SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   R64_PASSTHRU)
 135    SF( Y,  Y,  x,  Y,  Y,  Y,  Y,  x, 60,   90,   B8G8R8A8_UNORM)
 136    SF( Y,  Y,  x,  x,  Y,  Y,  x,  x,  x,    x,   B8G8R8A8_UNORM_SRGB)
 137 /* smpl filt shad CK  RT  AB  VB  SO  color ccs_e */
 138    SF( Y,  Y,  x,  x,  Y,  Y,  Y,  x, 60,    x,   R10G10B10A2_UNORM)
 139    SF( Y,  Y,  x,  x,  x,  x,  x,  x, 60,    x,   R10G10B10A2_UNORM_SRGB)
 140    SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,    x,   R10G10B10A2_UINT)
 141    SF( Y,  Y,  x,  x,  x,  x,  Y,  x,  x,    x,   R10G10B10_SNORM_A2_UNORM)
 142    SF( Y,  Y,  x,  x,  Y,  Y,  Y,  x, 60,   90,   R8G8B8A8_UNORM)
 143    SF( Y,  Y,  x,  x,  Y,  Y,  x,  x, 60,    x,   R8G8B8A8_UNORM_SRGB)
 144    SF( Y,  Y,  x,  x,  Y, 60,  Y,  x,  x,   90,   R8G8B8A8_SNORM)
 145    SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,   90,   R8G8B8A8_SINT)
 146    SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,   90,   R8G8B8A8_UINT)
 147    SF( Y,  Y,  x,  x,  Y, 45,  Y,  x,  x,   90,   R16G16_UNORM)
 148    SF( Y,  Y,  x,  x,  Y, 60,  Y,  x,  x,   90,   R16G16_SNORM)
 149    SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,   90,   R16G16_SINT)
 150    SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,   90,   R16G16_UINT)
 151    SF( Y,  Y,  x,  x,  Y,  Y,  Y,  x,  x,   90,   R16G16_FLOAT)
 152    SF( Y,  Y,  x,  x,  Y,  Y, 75,  x, 60,    x,   B10G10R10A2_UNORM)
 153    SF( Y,  Y,  x,  x,  Y,  Y,  x,  x, 60,    x,   B10G10R10A2_UNORM_SRGB)
 154    SF( Y,  Y,  x,  x,  Y,  Y,  Y,  x,  x,    x,   R11G11B10_FLOAT)
 155    SF( Y,  x,  x,  x,  Y,  x,  Y,  Y,  x,   90,   R32_SINT)
 156    SF( Y,  x,  x,  x,  Y,  x,  Y,  Y,  x,   90,   R32_UINT)
 157    SF( Y, 50,  Y,  x,  Y,  Y,  Y,  Y,  x,   90,   R32_FLOAT)
 158    SF( Y, 50,  Y,  x,  x,  x,  x,  x,  x,    x,   R24_UNORM_X8_TYPELESS)
 159    SF( Y,  x,  x,  x,  x,  x,  x,  x,  x,    x,   X24_TYPELESS_G8_UINT)
 160    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   L16A16_UNORM)
 161    SF( Y, 50,  Y,  x,  x,  x,  x,  x,  x,    x,   I24X8_UNORM)
 162    SF( Y, 50,  Y,  x,  x,  x,  x,  x,  x,    x,   L24X8_UNORM)
 163    SF( Y, 50,  Y,  x,  x,  x,  x,  x,  x,    x,   A24X8_UNORM)
 164    SF( Y, 50,  Y,  x,  x,  x,  x,  x,  x,    x,   I32_FLOAT)
 165    SF( Y, 50,  Y,  x,  x,  x,  x,  x,  x,    x,   L32_FLOAT)
 166    SF( Y, 50,  Y,  x,  x,  x,  x,  x,  x,    x,   A32_FLOAT)
 167    SF( Y,  Y,  x,  Y, 80, 80,  x,  x, 60,   90,   B8G8R8X8_UNORM)
 168    SF( Y,  Y,  x,  x, 80, 80,  x,  x,  x,    x,   B8G8R8X8_UNORM_SRGB)
 169    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   R8G8B8X8_UNORM)
 170    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   R8G8B8X8_UNORM_SRGB)
 171    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   R9G9B9E5_SHAREDEXP)
 172    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   B10G10R10X2_UNORM)
 173    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   L16A16_FLOAT)
 174    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32_UNORM)
 175    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32_SNORM)
 176 /* smpl filt shad CK  RT  AB  VB  SO  color ccs_e */
 177    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R10G10B10X2_USCALED)
 178    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R8G8B8A8_SSCALED)
 179    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R8G8B8A8_USCALED)
 180    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R16G16_SSCALED)
 181    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R16G16_USCALED)
 182    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32_SSCALED)
 183    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32_USCALED)
 184    SF( Y,  Y,  x,  Y,  Y,  Y,  x,  x,  x,    x,   B5G6R5_UNORM)
 185    SF( Y,  Y,  x,  x,  Y,  Y,  x,  x,  x,    x,   B5G6R5_UNORM_SRGB)
 186    SF( Y,  Y,  x,  Y,  Y,  Y,  x,  x,  x,    x,   B5G5R5A1_UNORM)
 187    SF( Y,  Y,  x,  x,  Y,  Y,  x,  x,  x,    x,   B5G5R5A1_UNORM_SRGB)
 188    SF( Y,  Y,  x,  Y,  Y,  Y,  x,  x,  x,    x,   B4G4R4A4_UNORM)
 189    SF( Y,  Y,  x,  x,  Y,  Y,  x,  x,  x,    x,   B4G4R4A4_UNORM_SRGB)
 190    SF( Y,  Y,  x,  x,  Y,  Y,  Y,  x,  x,    x,   R8G8_UNORM)
 191    SF( Y,  Y,  x,  Y,  Y, 60,  Y,  x,  x,    x,   R8G8_SNORM)
 192    SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,    x,   R8G8_SINT)
 193    SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,    x,   R8G8_UINT)
 194    SF( Y,  Y,  Y,  x,  Y, 45,  Y,  x, 70,    x,   R16_UNORM)
 195    SF( Y,  Y,  x,  x,  Y, 60,  Y,  x,  x,    x,   R16_SNORM)
 196    SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,    x,   R16_SINT)
 197    SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,    x,   R16_UINT)
 198    SF( Y,  Y,  x,  x,  Y,  Y,  Y,  x,  x,    x,   R16_FLOAT)
 199    SF(50, 50,  x,  x,  x,  x,  x,  x,  x,    x,   A8P8_UNORM_PALETTE0)
 200    SF(50, 50,  x,  x,  x,  x,  x,  x,  x,    x,   A8P8_UNORM_PALETTE1)
 201    SF( Y,  Y,  Y,  x,  x,  x,  x,  x,  x,    x,   I16_UNORM)
 202    SF( Y,  Y,  Y,  x,  x,  x,  x,  x,  x,    x,   L16_UNORM)
 203    SF( Y,  Y,  Y,  x,  x,  x,  x,  x,  x,    x,   A16_UNORM)
 204    SF( Y,  Y,  x,  Y,  x,  x,  x,  x,  x,    x,   L8A8_UNORM)
 205    SF( Y,  Y,  Y,  x,  x,  x,  x,  x,  x,    x,   I16_FLOAT)
 206    SF( Y,  Y,  Y,  x,  x,  x,  x,  x,  x,    x,   L16_FLOAT)
 207    SF( Y,  Y,  Y,  x,  x,  x,  x,  x,  x,    x,   A16_FLOAT)
 208    SF(45, 45,  x,  x,  x,  x,  x,  x,  x,    x,   L8A8_UNORM_SRGB)
 209    SF( Y,  Y,  x,  Y,  x,  x,  x,  x,  x,    x,   R5G5_SNORM_B6_UNORM)
 210    SF( x,  x,  x,  x,  Y,  Y,  x,  x,  x,    x,   B5G5R5X1_UNORM)
 211    SF( x,  x,  x,  x,  Y,  Y,  x,  x,  x,    x,   B5G5R5X1_UNORM_SRGB)
 212    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R8G8_SSCALED)
 213    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R8G8_USCALED)
 214 /* smpl filt shad CK  RT  AB  VB  SO  color ccs_e */
 215    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R16_SSCALED)
 216    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R16_USCALED)
 217    SF(50, 50,  x,  x,  x,  x,  x,  x,  x,    x,   P8A8_UNORM_PALETTE0)
 218    SF(50, 50,  x,  x,  x,  x,  x,  x,  x,    x,   P8A8_UNORM_PALETTE1)
 219    SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   A1B5G5R5_UNORM)
 220    SF(90, 90,  x,  x, 90,  x,  x,  x,  x,    x,   A4B4G4R4_UNORM)
 221    SF(90,  x,  x,  x,  x,  x,  x,  x,  x,    x,   L8A8_UINT)
 222    SF(90,  x,  x,  x,  x,  x,  x,  x,  x,    x,   L8A8_SINT)
 223    SF( Y,  Y,  x, 45,  Y,  Y,  Y,  x,  x,    x,   R8_UNORM)
 224    SF( Y,  Y,  x,  x,  Y, 60,  Y,  x,  x,    x,   R8_SNORM)
 225    SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,    x,   R8_SINT)
 226    SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,    x,   R8_UINT)
 227    SF( Y,  Y,  x,  Y,  Y,  Y,  x,  x,  x,    x,   A8_UNORM)
 228    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   I8_UNORM)
 229    SF( Y,  Y,  x,  Y,  x,  x,  x,  x,  x,    x,   L8_UNORM)
 230    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   P4A4_UNORM_PALETTE0)
 231    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   A4P4_UNORM_PALETTE0)
 232    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R8_SSCALED)
 233    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R8_USCALED)
 234    SF(45, 45,  x,  x,  x,  x,  x,  x,  x,    x,   P8_UNORM_PALETTE0)
 235    SF(45, 45,  x,  x,  x,  x,  x,  x,  x,    x,   L8_UNORM_SRGB)
 236    SF(45, 45,  x,  x,  x,  x,  x,  x,  x,    x,   P8_UNORM_PALETTE1)
 237    SF(45, 45,  x,  x,  x,  x,  x,  x,  x,    x,   P4A4_UNORM_PALETTE1)
 238    SF(45, 45,  x,  x,  x,  x,  x,  x,  x,    x,   A4P4_UNORM_PALETTE1)
 239    SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   Y8_UNORM)
 240    SF(90,  x,  x,  x,  x,  x,  x,  x,  x,    x,   L8_UINT)
 241    SF(90,  x,  x,  x,  x,  x,  x,  x,  x,    x,   L8_SINT)
 242    SF(90,  x,  x,  x,  x,  x,  x,  x,  x,    x,   I8_UINT)
 243    SF(90,  x,  x,  x,  x,  x,  x,  x,  x,    x,   I8_SINT)
 244    SF(45, 45,  x,  x,  x,  x,  x,  x,  x,    x,   DXT1_RGB_SRGB)
 245    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   R1_UNORM)
 246    SF( Y,  Y,  x,  Y,  Y,  x,  x,  x, 60,    x,   YCRCB_NORMAL)
 247    SF( Y,  Y,  x,  Y,  Y,  x,  x,  x, 60,    x,   YCRCB_SWAPUVY)
 248    SF(45, 45,  x,  x,  x,  x,  x,  x,  x,    x,   P2_UNORM_PALETTE0)
 249    SF(45, 45,  x,  x,  x,  x,  x,  x,  x,    x,   P2_UNORM_PALETTE1)
 250    SF( Y,  Y,  x,  Y,  x,  x,  x,  x,  x,    x,   BC1_UNORM)
 251    SF( Y,  Y,  x,  Y,  x,  x,  x,  x,  x,    x,   BC2_UNORM)
 252    SF( Y,  Y,  x,  Y,  x,  x,  x,  x,  x,    x,   BC3_UNORM)
 253    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   BC4_UNORM)
 254    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   BC5_UNORM)
 255    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   BC1_UNORM_SRGB)
 256    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   BC2_UNORM_SRGB)
 257    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   BC3_UNORM_SRGB)
 258    SF( Y,  x,  x,  x,  x,  x,  x,  x,  x,    x,   MONO8)
 259    SF( Y,  Y,  x,  x,  Y,  x,  x,  x, 60,    x,   YCRCB_SWAPUV)
 260    SF( Y,  Y,  x,  x,  Y,  x,  x,  x, 60,    x,   YCRCB_SWAPY)
 261    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   DXT1_RGB)
 262 /* smpl filt shad CK  RT  AB  VB  SO  color ccs_e */
 263    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   FXT1)
 264    SF(75, 75,  x,  x,  x,  x,  Y,  x,  x,    x,   R8G8B8_UNORM)
 265    SF(75, 75,  x,  x,  x,  x,  Y,  x,  x,    x,   R8G8B8_SNORM)
 266    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R8G8B8_SSCALED)
 267    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R8G8B8_USCALED)
 268    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R64G64B64A64_FLOAT)
 269    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R64G64B64_FLOAT)
 270    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   BC4_SNORM)
 271    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   BC5_SNORM)
 272    SF(50, 50,  x,  x,  x,  x, 60,  x,  x,    x,   R16G16B16_FLOAT)
 273    SF(75, 75,  x,  x,  x,  x,  Y,  x,  x,    x,   R16G16B16_UNORM)
 274    SF(75, 75,  x,  x,  x,  x,  Y,  x,  x,    x,   R16G16B16_SNORM)
 275    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R16G16B16_SSCALED)
 276    SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R16G16B16_USCALED)
 277    SF(70, 70,  x,  x,  x,  x,  x,  x,  x,    x,   BC6H_SF16)
 278    SF(70, 70,  x,  x,  x,  x,  x,  x,  x,    x,   BC7_UNORM)
 279    SF(70, 70,  x,  x,  x,  x,  x,  x,  x,    x,   BC7_UNORM_SRGB)
 280    SF(70, 70,  x,  x,  x,  x,  x,  x,  x,    x,   BC6H_UF16)
 281    SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   PLANAR_420_8)
 282    SF(75, 75,  x,  x,  x,  x,  x,  x,  x,    x,   R8G8B8_UNORM_SRGB)
 283    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ETC1_RGB8)
 284    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ETC2_RGB8)
 285    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   EAC_R11)
 286    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   EAC_RG11)
 287    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   EAC_SIGNED_R11)
 288    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   EAC_SIGNED_RG11)
 289    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ETC2_SRGB8)
 290    SF(90,  x,  x,  x,  x,  x, 75,  x,  x,    x,   R16G16B16_UINT)
 291    SF(90,  x,  x,  x,  x,  x, 75,  x,  x,    x,   R16G16B16_SINT)
 292    SF( x,  x,  x,  x,  x,  x, 75,  x,  x,    x,   R32_SFIXED)
 293    SF( x,  x,  x,  x,  x,  x, 75,  x,  x,    x,   R10G10B10A2_SNORM)
 294    SF( x,  x,  x,  x,  x,  x, 75,  x,  x,    x,   R10G10B10A2_USCALED)
 295    SF( x,  x,  x,  x,  x,  x, 75,  x,  x,    x,   R10G10B10A2_SSCALED)
 296    SF( x,  x,  x,  x,  x,  x, 75,  x,  x,    x,   R10G10B10A2_SINT)
 297    SF( x,  x,  x,  x,  x,  x, 75,  x,  x,    x,   B10G10R10A2_SNORM)
 298    SF( x,  x,  x,  x,  x,  x, 75,  x,  x,    x,   B10G10R10A2_USCALED)
 299    SF( x,  x,  x,  x,  x,  x, 75,  x,  x,    x,   B10G10R10A2_SSCALED)
 300    SF( x,  x,  x,  x,  x,  x, 75,  x,  x,    x,   B10G10R10A2_UINT)
 301    SF( x,  x,  x,  x,  x,  x, 75,  x,  x,    x,   B10G10R10A2_SINT)
 302    SF( x,  x,  x,  x,  x,  x, 80,  x,  x,    x,   R64G64B64A64_PASSTHRU)
 303    SF( x,  x,  x,  x,  x,  x, 80,  x,  x,    x,   R64G64B64_PASSTHRU)
 304    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ETC2_RGB8_PTA)
 305    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ETC2_SRGB8_PTA)
 306    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ETC2_EAC_RGBA8)
 307    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ETC2_EAC_SRGB8_A8)
 308    SF(90,  x,  x,  x,  x,  x, 75,  x,  x,    x,   R8G8B8_UINT)
 309    SF(90,  x,  x,  x,  x,  x, 75,  x,  x,    x,   R8G8B8_SINT)
 310    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_4X4_FLT16)
 311    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_5X4_FLT16)
 312    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_5X5_FLT16)
 313    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_6X5_FLT16)
 314    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_6X6_FLT16)
 315    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_8X5_FLT16)
 316    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_8X6_FLT16)
 317    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_8X8_FLT16)
 318    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_10X5_FLT16)
 319    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_10X6_FLT16)
 320    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_10X8_FLT16)
 321    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_10X10_FLT16)
 322    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_12X10_FLT16)
 323    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_12X12_FLT16)
 324    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_4X4_U8SRGB)
 325    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_5X4_U8SRGB)
 326    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_5X5_U8SRGB)
 327    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_6X5_U8SRGB)
 328    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_6X6_U8SRGB)
 329    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_8X5_U8SRGB)
 330    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_8X6_U8SRGB)
 331    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_8X8_U8SRGB)
 332    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_10X5_U8SRGB)
 333    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_10X6_U8SRGB)
 334    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_10X8_U8SRGB)
 335    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_10X10_U8SRGB)
 336    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_12X10_U8SRGB)
 337    SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_12X12_U8SRGB)
 338 };
 339 #undef x
 340 #undef Y
 341
 342 static unsigned
 343 format_gen(const struct brw_device_info *devinfo)
 344 {
 345    return devinfo->gen * 10 + (devinfo->is_g4x || devinfo->is_haswell) * 5;
 346 }
 347
 348 bool
 349 isl_format_supports_rendering(const struct brw_device_info *devinfo,
 350                               enum isl_format format)
 351 {
 352    if (!format_info[format].exists)
 353       return false;
 354
 355    return format_gen(devinfo) >= format_info[format].render_target;
 356 }
 357
 358 bool
 359 isl_format_supports_alpha_blending(const struct brw_device_info *devinfo,
 360                                    enum isl_format format)
 361 {
 362    if (!format_info[format].exists)
 363       return false;
 364
 365    return format_gen(devinfo) >= format_info[format].alpha_blend;
 366 }
 367
 368 bool
 369 isl_format_supports_sampling(const struct brw_device_info *devinfo,
 370                              enum isl_format format)
 371 {
 372    if (!format_info[format].exists)
 373       return false;
 374
 375    if (devinfo->is_baytrail) {
 376       const struct isl_format_layout *fmtl = isl_format_get_layout(format);
 377       /* Support for ETC1 and ETC2 exists on Bay Trail even though big-core
 378        * GPUs didn't get it until Broadwell.
 379        */
 380       if (fmtl->txc == ISL_TXC_ETC1 || fmtl->txc == ISL_TXC_ETC2)
 381          return true;
 382    }
 383
 384    return format_gen(devinfo) >= format_info[format].sampling;
 385 }
 386
 387 bool
 388 isl_format_supports_filtering(const struct brw_device_info *devinfo,
 389                               enum isl_format format)
 390 {
 391    if (!format_info[format].exists)
 392       return false;
 393
 394    if (devinfo->is_baytrail) {
 395       const struct isl_format_layout *fmtl = isl_format_get_layout(format);
 396       /* Support for ETC1 and ETC2 exists on Bay Trail even though big-core
 397        * GPUs didn't get it until Broadwell.
 398        */
 399       if (fmtl->txc == ISL_TXC_ETC1 || fmtl->txc == ISL_TXC_ETC2)
 400          return true;
 401    }
 402
 403    return format_gen(devinfo) >= format_info[format].filtering;
 404 }
 405
 406 bool
 407 isl_format_supports_vertex_fetch(const struct brw_device_info *devinfo,
 408                                  enum isl_format format)
 409 {
 410    if (!format_info[format].exists)
 411       return false;
 412
 413    /* For vertex fetch, Bay Trail supports the same set of formats as Haswell
 414     * but is a superset of Ivy Bridge.
 415     */
 416    if (devinfo->is_baytrail)
 417       return 75 >= format_info[format].input_vb;
 418
 419    return format_gen(devinfo) >= format_info[format].input_vb;
 420 }
 421
 422 bool
 423 isl_format_supports_lossless_compression(const struct brw_device_info *devinfo,
 424                                          enum isl_format format)
 425 {
 426    if (!format_info[format].exists)
 427       return false;
 428
 429    return format_gen(devinfo) >= format_info[format].lossless_compression;
 430 }
 431
 432 static inline bool
 433 isl_format_has_channel_type(enum isl_format fmt, enum isl_base_type type)
 434 {
 435    const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
 436
 437    return fmtl->channels.r.type == type ||
 438           fmtl->channels.g.type == type ||
 439           fmtl->channels.b.type == type ||
 440           fmtl->channels.a.type == type ||
 441           fmtl->channels.l.type == type ||
 442           fmtl->channels.i.type == type ||
 443           fmtl->channels.p.type == type;
 444 }
 445
 446 bool
 447 isl_format_has_unorm_channel(enum isl_format fmt)
 448 {
 449    return isl_format_has_channel_type(fmt, ISL_UNORM);
 450 }
 451
 452 bool
 453 isl_format_has_snorm_channel(enum isl_format fmt)
 454 {
 455    return isl_format_has_channel_type(fmt, ISL_SNORM);
 456 }
 457
 458 bool
 459 isl_format_has_ufloat_channel(enum isl_format fmt)
 460 {
 461    return isl_format_has_channel_type(fmt, ISL_UFLOAT);
 462 }
 463
 464 bool
 465 isl_format_has_sfloat_channel(enum isl_format fmt)
 466 {
 467    return isl_format_has_channel_type(fmt, ISL_SFLOAT);
 468 }
 469
 470 bool
 471 isl_format_has_uint_channel(enum isl_format fmt)
 472 {
 473    return isl_format_has_channel_type(fmt, ISL_UINT);
 474 }
 475
 476 bool
 477 isl_format_has_sint_channel(enum isl_format fmt)
 478 {
 479    return isl_format_has_channel_type(fmt, ISL_SINT);
 480 }
 481
 482 unsigned
 483 isl_format_get_num_channels(enum isl_format fmt)
 484 {
 485    const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
 486
 487    assert(fmtl->channels.p.bits == 0);
 488
 489    return (fmtl->channels.r.bits > 0) +
 490           (fmtl->channels.g.bits > 0) +
 491           (fmtl->channels.b.bits > 0) +
 492           (fmtl->channels.a.bits > 0) +
 493           (fmtl->channels.l.bits > 0) +
 494           (fmtl->channels.i.bits > 0);
 495 }
 496
 497 uint32_t
 498 isl_format_get_depth_format(enum isl_format fmt, bool has_stencil)
 499 {
 500    switch (fmt) {
 501    default:
 502       unreachable("bad isl depth format");
 503    case ISL_FORMAT_R32_FLOAT_X8X24_TYPELESS:
 504       assert(has_stencil);
 505       return 0; /* D32_FLOAT_S8X24_UINT */
 506    case ISL_FORMAT_R32_FLOAT:
 507       assert(!has_stencil);
 508       return 1; /* D32_FLOAT */
 509    case ISL_FORMAT_R24_UNORM_X8_TYPELESS:
 510       if (has_stencil) {
 511          return 2; /* D24_UNORM_S8_UINT */
 512       } else {
 513          return 3; /* D24_UNORM_X8_UINT */
 514       }
 515    case ISL_FORMAT_R16_UNORM:
 516       assert(!has_stencil);
 517       return 5; /* D16_UNORM */
 518    }
 519 }
 520
 521 enum isl_format
 522 isl_format_rgb_to_rgba(enum isl_format rgb)
 523 {
 524    assert(isl_format_is_rgb(rgb));
 525
 526    switch (rgb) {
 527    case ISL_FORMAT_R32G32B32_FLOAT:    return ISL_FORMAT_R32G32B32A32_FLOAT;
 528    case ISL_FORMAT_R32G32B32_SINT:     return ISL_FORMAT_R32G32B32A32_SINT;
 529    case ISL_FORMAT_R32G32B32_UINT:     return ISL_FORMAT_R32G32B32A32_UINT;
 530    case ISL_FORMAT_R32G32B32_UNORM:    return ISL_FORMAT_R32G32B32A32_UNORM;
 531    case ISL_FORMAT_R32G32B32_SNORM:    return ISL_FORMAT_R32G32B32A32_SNORM;
 532    case ISL_FORMAT_R32G32B32_SSCALED:  return ISL_FORMAT_R32G32B32A32_SSCALED;
 533    case ISL_FORMAT_R32G32B32_USCALED:  return ISL_FORMAT_R32G32B32A32_USCALED;
 534    case ISL_FORMAT_R32G32B32_SFIXED:   return ISL_FORMAT_R32G32B32A32_SFIXED;
 535    case ISL_FORMAT_R8G8B8_UNORM:       return ISL_FORMAT_R8G8B8A8_UNORM;
 536    case ISL_FORMAT_R8G8B8_SNORM:       return ISL_FORMAT_R8G8B8A8_SNORM;
 537    case ISL_FORMAT_R8G8B8_SSCALED:     return ISL_FORMAT_R8G8B8A8_SSCALED;
 538    case ISL_FORMAT_R8G8B8_USCALED:     return ISL_FORMAT_R8G8B8A8_USCALED;
 539    case ISL_FORMAT_R16G16B16_FLOAT:    return ISL_FORMAT_R16G16B16A16_FLOAT;
 540    case ISL_FORMAT_R16G16B16_UNORM:    return ISL_FORMAT_R16G16B16A16_UNORM;
 541    case ISL_FORMAT_R16G16B16_SNORM:    return ISL_FORMAT_R16G16B16A16_SNORM;
 542    case ISL_FORMAT_R16G16B16_SSCALED:  return ISL_FORMAT_R16G16B16A16_SSCALED;
 543    case ISL_FORMAT_R16G16B16_USCALED:  return ISL_FORMAT_R16G16B16A16_USCALED;
 544    case ISL_FORMAT_R8G8B8_UNORM_SRGB:  return ISL_FORMAT_R8G8B8A8_UNORM_SRGB;
 545    case ISL_FORMAT_R16G16B16_UINT:     return ISL_FORMAT_R16G16B16A16_UINT;
 546    case ISL_FORMAT_R16G16B16_SINT:     return ISL_FORMAT_R16G16B16A16_SINT;
 547    case ISL_FORMAT_R8G8B8_UINT:        return ISL_FORMAT_R8G8B8A8_UINT;
 548    case ISL_FORMAT_R8G8B8_SINT:        return ISL_FORMAT_R8G8B8A8_SINT;
 549    default:
 550       return ISL_FORMAT_UNSUPPORTED;
 551    }
 552 }
 553
 554 enum isl_format
 555 isl_format_rgb_to_rgbx(enum isl_format rgb)
 556 {
 557    assert(isl_format_is_rgb(rgb));
 558
 559    switch (rgb) {
 560    case ISL_FORMAT_R32G32B32_FLOAT:
 561       return ISL_FORMAT_R32G32B32X32_FLOAT;
 562    case ISL_FORMAT_R16G16B16_UNORM:
 563       return ISL_FORMAT_R16G16B16X16_UNORM;
 564    case ISL_FORMAT_R16G16B16_FLOAT:
 565       return ISL_FORMAT_R16G16B16X16_FLOAT;
 566    case ISL_FORMAT_R8G8B8_UNORM:
 567       return ISL_FORMAT_R8G8B8X8_UNORM;
 568    case ISL_FORMAT_R8G8B8_UNORM_SRGB:
 569       return ISL_FORMAT_R8G8B8X8_UNORM_SRGB;
 570    default:
 571       return ISL_FORMAT_UNSUPPORTED;
 572    }
 573 }