/*
 * Copyright © 2011 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */
#include "main/mtypes.h"

#include "brw_context.h"
#include "brw_state.h"
#include "brw_defines.h"
#include "brw_wm.h"
#include "brw_surface_formats.h"

/* This macro allows us to write the table almost as it appears in the PRM,
 * while restructuring it to turn it into the C code we want.
 */
#define SF(sampl, filt, shad, ck, rt, ab, vb, so, color, ccs_e, sf) \
   [BRW_SURFACEFORMAT_##sf] = { true, sampl, filt, shad, ck, rt, ab, vb, so, color, ccs_e, #sf},

#define Y 0
#define x 999
/**
 * This is the table of support for surface (texture, renderbuffer, and vertex
 * buffer, but not depthbuffer) formats across the various hardware generations.
 *
 * The table is formatted to match the documentation, except that the docs have
 * this ridiculous mapping of Y[*+~^#&] for "supported on DevWhatever".  To put
 * it in our table, here's the mapping:
 *
 * Y*: 45
 * Y+: 45 (g45/gm45)
 * Y~: 50 (gen5)
 * Y^: 60 (gen6)
 * Y#: 70 (gen7)
 *
 * The abbreviations in the header below are:
 * smpl  - Sampling Engine
 * filt  - Sampling Engine Filtering
 * shad  - Sampling Engine Shadow Map
 * CK    - Sampling Engine Chroma Key
 * RT    - Render Target
 * AB    - Alpha Blend Render Target
 * VB    - Input Vertex Buffer
 * SO    - Steamed Output Vertex Buffers (transform feedback)
 * color - Color Processing
 * ccs_e - Lossless Compression Support (gen9+ only)
 * sf    - Surface Format
 *
 * See page 88 of the Sandybridge PRM VOL4_Part1 PDF.
 *
 * As of Ivybridge, the columns are no longer in that table and the
 * information can be found spread across:
 *
 * - VOL2_Part1 section 2.5.11 Format Conversion (vertex fetch).
 * - VOL4_Part1 section 2.12.2.1.2 Sampler Output Channel Mapping.
 * - VOL4_Part1 section 3.9.11 Render Target Write.
 * - Render Target Surface Types [SKL+]
 */
const struct brw_surface_format_info surface_formats[] = {
/* smpl filt shad CK  RT  AB  VB  SO  color ccs_e */
   SF( Y, 50,  x,  x,  Y,  Y,  Y,  Y,  x,   90,   R32G32B32A32_FLOAT)
   SF( Y,  x,  x,  x,  Y,  x,  Y,  Y,  x,   90,   R32G32B32A32_SINT)
   SF( Y,  x,  x,  x,  Y,  x,  Y,  Y,  x,   90,   R32G32B32A32_UINT)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32B32A32_UNORM)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32B32A32_SNORM)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R64G64_FLOAT)
   SF( Y, 50,  x,  x,  x,  x,  x,  x,  x,    x,   R32G32B32X32_FLOAT)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32B32A32_SSCALED)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32B32A32_USCALED)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   R32G32B32A32_SFIXED)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   R64G64_PASSTHRU)
   SF( Y, 50,  x,  x,  x,  x,  Y,  Y,  x,    x,   R32G32B32_FLOAT)
   SF( Y,  x,  x,  x,  x,  x,  Y,  Y,  x,    x,   R32G32B32_SINT)
   SF( Y,  x,  x,  x,  x,  x,  Y,  Y,  x,    x,   R32G32B32_UINT)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32B32_UNORM)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32B32_SNORM)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32B32_SSCALED)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32B32_USCALED)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   R32G32B32_SFIXED)
   SF( Y,  Y,  x,  x,  Y, 45,  Y,  x, 60,   90,   R16G16B16A16_UNORM)
   SF( Y,  Y,  x,  x,  Y, 60,  Y,  x,  x,   90,   R16G16B16A16_SNORM)
   SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,   90,   R16G16B16A16_SINT)
   SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,   90,   R16G16B16A16_UINT)
   SF( Y,  Y,  x,  x,  Y,  Y,  Y,  x,  x,   90,   R16G16B16A16_FLOAT)
   SF( Y, 50,  x,  x,  Y,  Y,  Y,  Y,  x,   90,   R32G32_FLOAT)
   SF( Y, 70,  x,  x,  Y,  Y,  Y,  Y,  x,    x,   R32G32_FLOAT_LD)
   SF( Y,  x,  x,  x,  Y,  x,  Y,  Y,  x,   90,   R32G32_SINT)
   SF( Y,  x,  x,  x,  Y,  x,  Y,  Y,  x,   90,   R32G32_UINT)
   SF( Y, 50,  Y,  x,  x,  x,  x,  x,  x,    x,   R32_FLOAT_X8X24_TYPELESS)
   SF( Y,  x,  x,  x,  x,  x,  x,  x,  x,    x,   X32_TYPELESS_G8X24_UINT)
   SF( Y, 50,  x,  x,  x,  x,  x,  x,  x,    x,   L32A32_FLOAT)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32_UNORM)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32_SNORM)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R64_FLOAT)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   R16G16B16X16_UNORM)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,   90,   R16G16B16X16_FLOAT)
   SF( Y, 50,  x,  x,  x,  x,  x,  x,  x,    x,   A32X32_FLOAT)
   SF( Y, 50,  x,  x,  x,  x,  x,  x,  x,    x,   L32X32_FLOAT)
   SF( Y, 50,  x,  x,  x,  x,  x,  x,  x,    x,   I32X32_FLOAT)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R16G16B16A16_SSCALED)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R16G16B16A16_USCALED)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32_SSCALED)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32G32_USCALED)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   R32G32_SFIXED)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   R64_PASSTHRU)
   SF( Y,  Y,  x,  Y,  Y,  Y,  Y,  x, 60,   90,   B8G8R8A8_UNORM)
   SF( Y,  Y,  x,  x,  Y,  Y,  x,  x,  x,    x,   B8G8R8A8_UNORM_SRGB)
/* smpl filt shad CK  RT  AB  VB  SO  color ccs_e */
   SF( Y,  Y,  x,  x,  Y,  Y,  Y,  x, 60,    x,   R10G10B10A2_UNORM)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x, 60,    x,   R10G10B10A2_UNORM_SRGB)
   SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,    x,   R10G10B10A2_UINT)
   SF( Y,  Y,  x,  x,  x,  Y,  Y,  x,  x,    x,   R10G10B10_SNORM_A2_UNORM)
   SF( Y,  Y,  x,  x,  Y,  Y,  Y,  x, 60,   90,   R8G8B8A8_UNORM)
   SF( Y,  Y,  x,  x,  Y,  Y,  x,  x, 60,    x,   R8G8B8A8_UNORM_SRGB)
   SF( Y,  Y,  x,  x,  Y, 60,  Y,  x,  x,   90,   R8G8B8A8_SNORM)
   SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,   90,   R8G8B8A8_SINT)
   SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,   90,   R8G8B8A8_UINT)
   SF( Y,  Y,  x,  x,  Y, 45,  Y,  x,  x,   90,   R16G16_UNORM)
   SF( Y,  Y,  x,  x,  Y, 60,  Y,  x,  x,   90,   R16G16_SNORM)
   SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,   90,   R16G16_SINT)
   SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,   90,   R16G16_UINT)
   SF( Y,  Y,  x,  x,  Y,  Y,  Y,  x,  x,   90,   R16G16_FLOAT)
   SF( Y,  Y,  x,  x,  Y,  Y,  x,  x, 60,    x,   B10G10R10A2_UNORM)
   SF( Y,  Y,  x,  x,  Y,  Y,  x,  x, 60,    x,   B10G10R10A2_UNORM_SRGB)
   SF( Y,  Y,  x,  x,  Y,  Y,  Y,  x,  x,    x,   R11G11B10_FLOAT)
   SF( Y,  x,  x,  x,  Y,  x,  Y,  Y,  x,   90,   R32_SINT)
   SF( Y,  x,  x,  x,  Y,  x,  Y,  Y,  x,   90,   R32_UINT)
   SF( Y, 50,  Y,  x,  Y,  Y,  Y,  Y,  x,   90,   R32_FLOAT)
   SF( Y, 50,  Y,  x,  x,  x,  x,  x,  x,    x,   R24_UNORM_X8_TYPELESS)
   SF( Y,  x,  x,  x,  x,  x,  x,  x,  x,    x,   X24_TYPELESS_G8_UINT)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   L16A16_UNORM)
   SF( Y, 50,  Y,  x,  x,  x,  x,  x,  x,    x,   I24X8_UNORM)
   SF( Y, 50,  Y,  x,  x,  x,  x,  x,  x,    x,   L24X8_UNORM)
   SF( Y, 50,  Y,  x,  x,  x,  x,  x,  x,    x,   A24X8_UNORM)
   SF( Y, 50,  Y,  x,  x,  x,  x,  x,  x,    x,   I32_FLOAT)
   SF( Y, 50,  Y,  x,  x,  x,  x,  x,  x,    x,   L32_FLOAT)
   SF( Y, 50,  Y,  x,  x,  x,  x,  x,  x,    x,   A32_FLOAT)
   SF( Y,  Y,  x,  Y, 80, 80,  x,  x, 60,   90,   B8G8R8X8_UNORM)
   SF( Y,  Y,  x,  x, 80, 80,  x,  x,  x,    x,   B8G8R8X8_UNORM_SRGB)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   R8G8B8X8_UNORM)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   R8G8B8X8_UNORM_SRGB)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   R9G9B9E5_SHAREDEXP)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   B10G10R10X2_UNORM)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   L16A16_FLOAT)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32_UNORM)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32_SNORM)
/* smpl filt shad CK  RT  AB  VB  SO  color ccs_e */
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R10G10B10X2_USCALED)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R8G8B8A8_SSCALED)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R8G8B8A8_USCALED)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R16G16_SSCALED)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R16G16_USCALED)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32_SSCALED)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R32_USCALED)
   SF( Y,  Y,  x,  Y,  Y,  Y,  x,  x,  x,    x,   B5G6R5_UNORM)
   SF( Y,  Y,  x,  x,  Y,  Y,  x,  x,  x,    x,   B5G6R5_UNORM_SRGB)
   SF( Y,  Y,  x,  Y,  Y,  Y,  x,  x,  x,    x,   B5G5R5A1_UNORM)
   SF( Y,  Y,  x,  x,  Y,  Y,  x,  x,  x,    x,   B5G5R5A1_UNORM_SRGB)
   SF( Y,  Y,  x,  Y,  Y,  Y,  x,  x,  x,    x,   B4G4R4A4_UNORM)
   SF( Y,  Y,  x,  x,  Y,  Y,  x,  x,  x,    x,   B4G4R4A4_UNORM_SRGB)
   SF( Y,  Y,  x,  x,  Y,  Y,  Y,  x,  x,    x,   R8G8_UNORM)
   SF( Y,  Y,  x,  Y,  Y, 60,  Y,  x,  x,    x,   R8G8_SNORM)
   SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,    x,   R8G8_SINT)
   SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,    x,   R8G8_UINT)
   SF( Y,  Y,  Y,  x,  Y, 45,  Y,  x, 70,    x,   R16_UNORM)
   SF( Y,  Y,  x,  x,  Y, 60,  Y,  x,  x,    x,   R16_SNORM)
   SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,    x,   R16_SINT)
   SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,    x,   R16_UINT)
   SF( Y,  Y,  x,  x,  Y,  Y,  Y,  x,  x,    x,   R16_FLOAT)
   SF(50, 50,  x,  x,  x,  x,  x,  x,  x,    x,   A8P8_UNORM_PALETTE0)
   SF(50, 50,  x,  x,  x,  x,  x,  x,  x,    x,   A8P8_UNORM_PALETTE1)
   SF( Y,  Y,  Y,  x,  x,  x,  x,  x,  x,    x,   I16_UNORM)
   SF( Y,  Y,  Y,  x,  x,  x,  x,  x,  x,    x,   L16_UNORM)
   SF( Y,  Y,  Y,  x,  x,  x,  x,  x,  x,    x,   A16_UNORM)
   SF( Y,  Y,  x,  Y,  x,  x,  x,  x,  x,    x,   L8A8_UNORM)
   SF( Y,  Y,  Y,  x,  x,  x,  x,  x,  x,    x,   I16_FLOAT)
   SF( Y,  Y,  Y,  x,  x,  x,  x,  x,  x,    x,   L16_FLOAT)
   SF( Y,  Y,  Y,  x,  x,  x,  x,  x,  x,    x,   A16_FLOAT)
   SF(45, 45,  x,  x,  x,  x,  x,  x,  x,    x,   L8A8_UNORM_SRGB)
   SF( Y,  Y,  x,  Y,  x,  x,  x,  x,  x,    x,   R5G5_SNORM_B6_UNORM)
   SF( x,  x,  x,  x,  Y,  Y,  x,  x,  x,    x,   B5G5R5X1_UNORM)
   SF( x,  x,  x,  x,  Y,  Y,  x,  x,  x,    x,   B5G5R5X1_UNORM_SRGB)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R8G8_SSCALED)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R8G8_USCALED)
/* smpl filt shad CK  RT  AB  VB  SO  color ccs_e */
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R16_SSCALED)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R16_USCALED)
   SF(50, 50,  x,  x,  x,  x,  x,  x,  x,    x,   P8A8_UNORM_PALETTE0)
   SF(50, 50,  x,  x,  x,  x,  x,  x,  x,    x,   P8A8_UNORM_PALETTE1)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   A1B5G5R5_UNORM)
   SF( Y,  Y,  x,  Y, 90,  x,  x,  x,  x,    x,   A4B4G4R4_UNORM)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   L8A8_UINT)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   L8A8_SINT)
   SF( Y,  Y,  x, 45,  Y,  Y,  Y,  x,  x,    x,   R8_UNORM)
   SF( Y,  Y,  x,  x,  Y, 60,  Y,  x,  x,    x,   R8_SNORM)
   SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,    x,   R8_SINT)
   SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x,    x,   R8_UINT)
   SF( Y,  Y,  x,  Y,  Y,  Y,  x,  x,  x,    x,   A8_UNORM)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   I8_UNORM)
   SF( Y,  Y,  x,  Y,  x,  x,  x,  x,  x,    x,   L8_UNORM)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   P4A4_UNORM)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   A4P4_UNORM)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R8_SSCALED)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R8_USCALED)
   SF(45, 45,  x,  x,  x,  x,  x,  x,  x,    x,   P8_UNORM_PALETTE0)
   SF(45, 45,  x,  x,  x,  x,  x,  x,  x,    x,   L8_UNORM_SRGB)
   SF(45, 45,  x,  x,  x,  x,  x,  x,  x,    x,   P8_UNORM_PALETTE1)
   SF(45, 45,  x,  x,  x,  x,  x,  x,  x,    x,   P4A4_UNORM_PALETTE1)
   SF(45, 45,  x,  x,  x,  x,  x,  x,  x,    x,   A4P4_UNORM_PALETTE1)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   Y8_SNORM)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   L8_UINT)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   L8_SINT)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   I8_UINT)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   I8_SINT)
   SF(45, 45,  x,  x,  x,  x,  x,  x,  x,    x,   DXT1_RGB_SRGB)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   R1_UINT)
   SF( Y,  Y,  x,  Y,  Y,  x,  x,  x, 60,    x,   YCRCB_NORMAL)
   SF( Y,  Y,  x,  Y,  Y,  x,  x,  x, 60,    x,   YCRCB_SWAPUVY)
   SF(45, 45,  x,  x,  x,  x,  x,  x,  x,    x,   P2_UNORM_PALETTE0)
   SF(45, 45,  x,  x,  x,  x,  x,  x,  x,    x,   P2_UNORM_PALETTE1)
   SF( Y,  Y,  x,  Y,  x,  x,  x,  x,  x,    x,   BC1_UNORM)
   SF( Y,  Y,  x,  Y,  x,  x,  x,  x,  x,    x,   BC2_UNORM)
   SF( Y,  Y,  x,  Y,  x,  x,  x,  x,  x,    x,   BC3_UNORM)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   BC4_UNORM)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   BC5_UNORM)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   BC1_UNORM_SRGB)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   BC2_UNORM_SRGB)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   BC3_UNORM_SRGB)
   SF( Y,  x,  x,  x,  x,  x,  x,  x,  x,    x,   MONO8)
   SF( Y,  Y,  x,  x,  Y,  x,  x,  x, 60,    x,   YCRCB_SWAPUV)
   SF( Y,  Y,  x,  x,  Y,  x,  x,  x, 60,    x,   YCRCB_SWAPY)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   DXT1_RGB)
/* smpl filt shad CK  RT  AB  VB  SO  color ccs_e */
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   FXT1)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R8G8B8_UNORM)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R8G8B8_SNORM)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R8G8B8_SSCALED)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R8G8B8_USCALED)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R64G64B64A64_FLOAT)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R64G64B64_FLOAT)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   BC4_SNORM)
   SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x,    x,   BC5_SNORM)
   SF(50, 50,  x,  x,  x,  x, 60,  x,  x,    x,   R16G16B16_FLOAT)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R16G16B16_UNORM)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R16G16B16_SNORM)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R16G16B16_SSCALED)
   SF( x,  x,  x,  x,  x,  x,  Y,  x,  x,    x,   R16G16B16_USCALED)
   SF(70, 70,  x,  x,  x,  x,  x,  x,  x,    x,   BC6H_SF16)
   SF(70, 70,  x,  x,  x,  x,  x,  x,  x,    x,   BC7_UNORM)
   SF(70, 70,  x,  x,  x,  x,  x,  x,  x,    x,   BC7_UNORM_SRGB)
   SF(70, 70,  x,  x,  x,  x,  x,  x,  x,    x,   BC6H_UF16)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   PLANAR_420_8)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   R8G8B8_UNORM_SRGB)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ETC1_RGB8)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ETC2_RGB8)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   EAC_R11)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   EAC_RG11)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   EAC_SIGNED_R11)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   EAC_SIGNED_RG11)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ETC2_SRGB8)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   R16G16B16_UINT)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   R16G16B16_SINT)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   R32_SFIXED)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   R10G10B10A2_SNORM)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   R10G10B10A2_USCALED)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   R10G10B10A2_SSCALED)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   R10G10B10A2_SINT)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   B10G10R10A2_SNORM)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   B10G10R10A2_USCALED)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   B10G10R10A2_SSCALED)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   B10G10R10A2_UINT)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   B10G10R10A2_SINT)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   R64G64B64A64_PASSTHRU)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   R64G64B64_PASSTHRU)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ETC2_RGB8_PTA)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ETC2_SRGB8_PTA)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ETC2_EAC_RGBA8)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ETC2_EAC_SRGB8_A8)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   R8G8B8_UINT)
   SF( x,  x,  x,  x,  x,  x,  x,  x,  x,    x,   R8G8B8_SINT)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_4x4_FLT16)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_5x4_FLT16)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_5x5_FLT16)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_6x5_FLT16)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_6x6_FLT16)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_8x5_FLT16)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_8x6_FLT16)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_8x8_FLT16)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_10x5_FLT16)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_10x6_FLT16)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_10x8_FLT16)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_10x10_FLT16)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_12x10_FLT16)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_12x12_FLT16)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_4x4_U8sRGB)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_5x4_U8sRGB)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_5x5_U8sRGB)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_6x5_U8sRGB)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_6x6_U8sRGB)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_8x5_U8sRGB)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_8x6_U8sRGB)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_8x8_U8sRGB)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_10x5_U8sRGB)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_10x6_U8sRGB)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_10x8_U8sRGB)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_10x10_U8sRGB)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_12x10_U8sRGB)
   SF(80, 80,  x,  x,  x,  x,  x,  x,  x,    x,   ASTC_LDR_2D_12x12_U8sRGB)
};
#undef x
#undef Y

const char *
brw_surface_format_name(unsigned format)
{
   return surface_formats[format].name;
}

uint32_t
brw_format_for_mesa_format(mesa_format mesa_format)
{
   /* This table is ordered according to the enum ordering in formats.h.  We do
    * expect that enum to be extended without our explicit initialization
    * staying in sync, so we initialize to 0 even though
    * BRW_SURFACEFORMAT_R32G32B32A32_FLOAT happens to also be 0.
    */
   static const uint32_t table[MESA_FORMAT_COUNT] =
   {
      [MESA_FORMAT_A8B8G8R8_UNORM] = 0,
      [MESA_FORMAT_R8G8B8A8_UNORM] = BRW_SURFACEFORMAT_R8G8B8A8_UNORM,
      [MESA_FORMAT_B8G8R8A8_UNORM] = BRW_SURFACEFORMAT_B8G8R8A8_UNORM,
      [MESA_FORMAT_A8R8G8B8_UNORM] = 0,
      [MESA_FORMAT_X8B8G8R8_UNORM] = 0,
      [MESA_FORMAT_R8G8B8X8_UNORM] = BRW_SURFACEFORMAT_R8G8B8X8_UNORM,
      [MESA_FORMAT_B8G8R8X8_UNORM] = BRW_SURFACEFORMAT_B8G8R8X8_UNORM,
      [MESA_FORMAT_X8R8G8B8_UNORM] = 0,
      [MESA_FORMAT_BGR_UNORM8] = 0,
      [MESA_FORMAT_RGB_UNORM8] = BRW_SURFACEFORMAT_R8G8B8_UNORM,
      [MESA_FORMAT_B5G6R5_UNORM] = BRW_SURFACEFORMAT_B5G6R5_UNORM,
      [MESA_FORMAT_R5G6B5_UNORM] = 0,
      [MESA_FORMAT_B4G4R4A4_UNORM] = BRW_SURFACEFORMAT_B4G4R4A4_UNORM,
      [MESA_FORMAT_A4R4G4B4_UNORM] = 0,
      [MESA_FORMAT_A1B5G5R5_UNORM] = 0,
      [MESA_FORMAT_B5G5R5A1_UNORM] = BRW_SURFACEFORMAT_B5G5R5A1_UNORM,
      [MESA_FORMAT_A1R5G5B5_UNORM] = 0,
      [MESA_FORMAT_L4A4_UNORM] = 0,
      [MESA_FORMAT_L8A8_UNORM] = BRW_SURFACEFORMAT_L8A8_UNORM,
      [MESA_FORMAT_A8L8_UNORM] = 0,
      [MESA_FORMAT_L16A16_UNORM] = BRW_SURFACEFORMAT_L16A16_UNORM,
      [MESA_FORMAT_A16L16_UNORM] = 0,
      [MESA_FORMAT_B2G3R3_UNORM] = 0,
      [MESA_FORMAT_A_UNORM8] = BRW_SURFACEFORMAT_A8_UNORM,
      [MESA_FORMAT_A_UNORM16] = BRW_SURFACEFORMAT_A16_UNORM,
      [MESA_FORMAT_L_UNORM8] = BRW_SURFACEFORMAT_L8_UNORM,
      [MESA_FORMAT_L_UNORM16] = BRW_SURFACEFORMAT_L16_UNORM,
      [MESA_FORMAT_I_UNORM8] = BRW_SURFACEFORMAT_I8_UNORM,
      [MESA_FORMAT_I_UNORM16] = BRW_SURFACEFORMAT_I16_UNORM,
      [MESA_FORMAT_YCBCR_REV] = BRW_SURFACEFORMAT_YCRCB_NORMAL,
      [MESA_FORMAT_YCBCR] = BRW_SURFACEFORMAT_YCRCB_SWAPUVY,
      [MESA_FORMAT_R_UNORM8] = BRW_SURFACEFORMAT_R8_UNORM,
      [MESA_FORMAT_R8G8_UNORM] = BRW_SURFACEFORMAT_R8G8_UNORM,
      [MESA_FORMAT_G8R8_UNORM] = 0,
      [MESA_FORMAT_R_UNORM16] = BRW_SURFACEFORMAT_R16_UNORM,
      [MESA_FORMAT_R16G16_UNORM] = BRW_SURFACEFORMAT_R16G16_UNORM,
      [MESA_FORMAT_G16R16_UNORM] = 0,
      [MESA_FORMAT_B10G10R10A2_UNORM] = BRW_SURFACEFORMAT_B10G10R10A2_UNORM,
      [MESA_FORMAT_S8_UINT_Z24_UNORM] = 0,
      [MESA_FORMAT_Z24_UNORM_S8_UINT] = 0,
      [MESA_FORMAT_Z_UNORM16] = 0,
      [MESA_FORMAT_Z24_UNORM_X8_UINT] = 0,
      [MESA_FORMAT_X8_UINT_Z24_UNORM] = 0,
      [MESA_FORMAT_Z_UNORM32] = 0,
      [MESA_FORMAT_S_UINT8] = BRW_SURFACEFORMAT_R8_UINT,

      [MESA_FORMAT_BGR_SRGB8] = 0,
      [MESA_FORMAT_A8B8G8R8_SRGB] = 0,
      [MESA_FORMAT_B8G8R8A8_SRGB] = BRW_SURFACEFORMAT_B8G8R8A8_UNORM_SRGB,
      [MESA_FORMAT_A8R8G8B8_SRGB] = 0,
      [MESA_FORMAT_R8G8B8A8_SRGB] = BRW_SURFACEFORMAT_R8G8B8A8_UNORM_SRGB,
      [MESA_FORMAT_X8R8G8B8_SRGB] = 0,
      [MESA_FORMAT_B8G8R8X8_SRGB] = BRW_SURFACEFORMAT_B8G8R8X8_UNORM_SRGB,
      [MESA_FORMAT_L_SRGB8] = BRW_SURFACEFORMAT_L8_UNORM_SRGB,
      [MESA_FORMAT_L8A8_SRGB] = BRW_SURFACEFORMAT_L8A8_UNORM_SRGB,
      [MESA_FORMAT_A8L8_SRGB] = 0,
      [MESA_FORMAT_SRGB_DXT1] = BRW_SURFACEFORMAT_DXT1_RGB_SRGB,
      [MESA_FORMAT_SRGBA_DXT1] = BRW_SURFACEFORMAT_BC1_UNORM_SRGB,
      [MESA_FORMAT_SRGBA_DXT3] = BRW_SURFACEFORMAT_BC2_UNORM_SRGB,
      [MESA_FORMAT_SRGBA_DXT5] = BRW_SURFACEFORMAT_BC3_UNORM_SRGB,

      [MESA_FORMAT_RGB_FXT1] = BRW_SURFACEFORMAT_FXT1,
      [MESA_FORMAT_RGBA_FXT1] = BRW_SURFACEFORMAT_FXT1,
      [MESA_FORMAT_RGB_DXT1] = BRW_SURFACEFORMAT_DXT1_RGB,
      [MESA_FORMAT_RGBA_DXT1] = BRW_SURFACEFORMAT_BC1_UNORM,
      [MESA_FORMAT_RGBA_DXT3] = BRW_SURFACEFORMAT_BC2_UNORM,
      [MESA_FORMAT_RGBA_DXT5] = BRW_SURFACEFORMAT_BC3_UNORM,

      [MESA_FORMAT_RGBA_FLOAT32] = BRW_SURFACEFORMAT_R32G32B32A32_FLOAT,
      [MESA_FORMAT_RGBA_FLOAT16] = BRW_SURFACEFORMAT_R16G16B16A16_FLOAT,
      [MESA_FORMAT_RGB_FLOAT32] = BRW_SURFACEFORMAT_R32G32B32_FLOAT,
      [MESA_FORMAT_RGB_FLOAT16] = 0,
      [MESA_FORMAT_A_FLOAT32] = BRW_SURFACEFORMAT_A32_FLOAT,
      [MESA_FORMAT_A_FLOAT16] = BRW_SURFACEFORMAT_A16_FLOAT,
      [MESA_FORMAT_L_FLOAT32] = BRW_SURFACEFORMAT_L32_FLOAT,
      [MESA_FORMAT_L_FLOAT16] = BRW_SURFACEFORMAT_L16_FLOAT,
      [MESA_FORMAT_LA_FLOAT32] = BRW_SURFACEFORMAT_L32A32_FLOAT,
      [MESA_FORMAT_LA_FLOAT16] = BRW_SURFACEFORMAT_L16A16_FLOAT,
      [MESA_FORMAT_I_FLOAT32] = BRW_SURFACEFORMAT_I32_FLOAT,
      [MESA_FORMAT_I_FLOAT16] = BRW_SURFACEFORMAT_I16_FLOAT,
      [MESA_FORMAT_R_FLOAT32] = BRW_SURFACEFORMAT_R32_FLOAT,
      [MESA_FORMAT_R_FLOAT16] = BRW_SURFACEFORMAT_R16_FLOAT,
      [MESA_FORMAT_RG_FLOAT32] = BRW_SURFACEFORMAT_R32G32_FLOAT,
      [MESA_FORMAT_RG_FLOAT16] = BRW_SURFACEFORMAT_R16G16_FLOAT,

      [MESA_FORMAT_A_UINT8] = 0,
      [MESA_FORMAT_A_UINT16] = 0,
      [MESA_FORMAT_A_UINT32] = 0,
      [MESA_FORMAT_A_SINT8] = 0,
      [MESA_FORMAT_A_SINT16] = 0,
      [MESA_FORMAT_A_SINT32] = 0,

      [MESA_FORMAT_I_UINT8] = 0,
      [MESA_FORMAT_I_UINT16] = 0,
      [MESA_FORMAT_I_UINT32] = 0,
      [MESA_FORMAT_I_SINT8] = 0,
      [MESA_FORMAT_I_SINT16] = 0,
      [MESA_FORMAT_I_SINT32] = 0,

      [MESA_FORMAT_L_UINT8] = 0,
      [MESA_FORMAT_L_UINT16] = 0,
      [MESA_FORMAT_L_UINT32] = 0,
      [MESA_FORMAT_L_SINT8] = 0,
      [MESA_FORMAT_L_SINT16] = 0,
      [MESA_FORMAT_L_SINT32] = 0,

      [MESA_FORMAT_LA_UINT8] = 0,
      [MESA_FORMAT_LA_UINT16] = 0,
      [MESA_FORMAT_LA_UINT32] = 0,
      [MESA_FORMAT_LA_SINT8] = 0,
      [MESA_FORMAT_LA_SINT16] = 0,
      [MESA_FORMAT_LA_SINT32] = 0,

      [MESA_FORMAT_R_SINT8] = BRW_SURFACEFORMAT_R8_SINT,
      [MESA_FORMAT_RG_SINT8] = BRW_SURFACEFORMAT_R8G8_SINT,
      [MESA_FORMAT_RGB_SINT8] = BRW_SURFACEFORMAT_R8G8B8_SINT,
      [MESA_FORMAT_RGBA_SINT8] = BRW_SURFACEFORMAT_R8G8B8A8_SINT,
      [MESA_FORMAT_R_SINT16] = BRW_SURFACEFORMAT_R16_SINT,
      [MESA_FORMAT_RG_SINT16] = BRW_SURFACEFORMAT_R16G16_SINT,
      [MESA_FORMAT_RGB_SINT16] = BRW_SURFACEFORMAT_R16G16B16_SINT,
      [MESA_FORMAT_RGBA_SINT16] = BRW_SURFACEFORMAT_R16G16B16A16_SINT,
      [MESA_FORMAT_R_SINT32] = BRW_SURFACEFORMAT_R32_SINT,
      [MESA_FORMAT_RG_SINT32] = BRW_SURFACEFORMAT_R32G32_SINT,
      [MESA_FORMAT_RGB_SINT32] = BRW_SURFACEFORMAT_R32G32B32_SINT,
      [MESA_FORMAT_RGBA_SINT32] = BRW_SURFACEFORMAT_R32G32B32A32_SINT,

      [MESA_FORMAT_R_UINT8] = BRW_SURFACEFORMAT_R8_UINT,
      [MESA_FORMAT_RG_UINT8] = BRW_SURFACEFORMAT_R8G8_UINT,
      [MESA_FORMAT_RGB_UINT8] = BRW_SURFACEFORMAT_R8G8B8_UINT,
      [MESA_FORMAT_RGBA_UINT8] = BRW_SURFACEFORMAT_R8G8B8A8_UINT,
      [MESA_FORMAT_R_UINT16] = BRW_SURFACEFORMAT_R16_UINT,
      [MESA_FORMAT_RG_UINT16] = BRW_SURFACEFORMAT_R16G16_UINT,
      [MESA_FORMAT_RGB_UINT16] = BRW_SURFACEFORMAT_R16G16B16_UINT,
      [MESA_FORMAT_RGBA_UINT16] = BRW_SURFACEFORMAT_R16G16B16A16_UINT,
      [MESA_FORMAT_R_UINT32] = BRW_SURFACEFORMAT_R32_UINT,
      [MESA_FORMAT_RG_UINT32] = BRW_SURFACEFORMAT_R32G32_UINT,
      [MESA_FORMAT_RGB_UINT32] = BRW_SURFACEFORMAT_R32G32B32_UINT,
      [MESA_FORMAT_RGBA_UINT32] = BRW_SURFACEFORMAT_R32G32B32A32_UINT,

      [MESA_FORMAT_R_SNORM8] = BRW_SURFACEFORMAT_R8_SNORM,
      [MESA_FORMAT_R8G8_SNORM] = BRW_SURFACEFORMAT_R8G8_SNORM,
      [MESA_FORMAT_X8B8G8R8_SNORM] = 0,
      [MESA_FORMAT_A8B8G8R8_SNORM] = 0,
      [MESA_FORMAT_R8G8B8A8_SNORM] = BRW_SURFACEFORMAT_R8G8B8A8_SNORM,
      [MESA_FORMAT_R_SNORM16] = BRW_SURFACEFORMAT_R16_SNORM,
      [MESA_FORMAT_R16G16_SNORM] = BRW_SURFACEFORMAT_R16G16_SNORM,
      [MESA_FORMAT_RGB_SNORM16] = BRW_SURFACEFORMAT_R16G16B16_SNORM,
      [MESA_FORMAT_RGBA_SNORM16] = BRW_SURFACEFORMAT_R16G16B16A16_SNORM,
      [MESA_FORMAT_RGBA_UNORM16] = BRW_SURFACEFORMAT_R16G16B16A16_UNORM,

      [MESA_FORMAT_R_RGTC1_UNORM] = BRW_SURFACEFORMAT_BC4_UNORM,
      [MESA_FORMAT_R_RGTC1_SNORM] = BRW_SURFACEFORMAT_BC4_SNORM,
      [MESA_FORMAT_RG_RGTC2_UNORM] = BRW_SURFACEFORMAT_BC5_UNORM,
      [MESA_FORMAT_RG_RGTC2_SNORM] = BRW_SURFACEFORMAT_BC5_SNORM,

      [MESA_FORMAT_L_LATC1_UNORM] = 0,
      [MESA_FORMAT_L_LATC1_SNORM] = 0,
      [MESA_FORMAT_LA_LATC2_UNORM] = 0,
      [MESA_FORMAT_LA_LATC2_SNORM] = 0,

      [MESA_FORMAT_ETC1_RGB8] = BRW_SURFACEFORMAT_ETC1_RGB8,
      [MESA_FORMAT_ETC2_RGB8] = BRW_SURFACEFORMAT_ETC2_RGB8,
      [MESA_FORMAT_ETC2_SRGB8] = BRW_SURFACEFORMAT_ETC2_SRGB8,
      [MESA_FORMAT_ETC2_RGBA8_EAC] = BRW_SURFACEFORMAT_ETC2_EAC_RGBA8,
      [MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC] = BRW_SURFACEFORMAT_ETC2_EAC_SRGB8_A8,
      [MESA_FORMAT_ETC2_R11_EAC] = BRW_SURFACEFORMAT_EAC_R11,
      [MESA_FORMAT_ETC2_RG11_EAC] = BRW_SURFACEFORMAT_EAC_RG11,
      [MESA_FORMAT_ETC2_SIGNED_R11_EAC] = BRW_SURFACEFORMAT_EAC_SIGNED_R11,
      [MESA_FORMAT_ETC2_SIGNED_RG11_EAC] = BRW_SURFACEFORMAT_EAC_SIGNED_RG11,
      [MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1] = BRW_SURFACEFORMAT_ETC2_RGB8_PTA,
      [MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1] = BRW_SURFACEFORMAT_ETC2_SRGB8_PTA,

      [MESA_FORMAT_BPTC_RGBA_UNORM] = BRW_SURFACEFORMAT_BC7_UNORM,
      [MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM] = BRW_SURFACEFORMAT_BC7_UNORM_SRGB,
      [MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT] = BRW_SURFACEFORMAT_BC6H_SF16,
      [MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT] = BRW_SURFACEFORMAT_BC6H_UF16,

      [MESA_FORMAT_RGBA_ASTC_4x4]           = BRW_SURFACEFORMAT_ASTC_LDR_2D_4x4_FLT16,
      [MESA_FORMAT_RGBA_ASTC_5x4]           = BRW_SURFACEFORMAT_ASTC_LDR_2D_5x4_FLT16,
      [MESA_FORMAT_RGBA_ASTC_5x5]           = BRW_SURFACEFORMAT_ASTC_LDR_2D_5x5_FLT16,
      [MESA_FORMAT_RGBA_ASTC_6x5]           = BRW_SURFACEFORMAT_ASTC_LDR_2D_6x5_FLT16,
      [MESA_FORMAT_RGBA_ASTC_6x6]           = BRW_SURFACEFORMAT_ASTC_LDR_2D_6x6_FLT16,
      [MESA_FORMAT_RGBA_ASTC_8x5]           = BRW_SURFACEFORMAT_ASTC_LDR_2D_8x5_FLT16,
      [MESA_FORMAT_RGBA_ASTC_8x6]           = BRW_SURFACEFORMAT_ASTC_LDR_2D_8x6_FLT16,
      [MESA_FORMAT_RGBA_ASTC_8x8]           = BRW_SURFACEFORMAT_ASTC_LDR_2D_8x8_FLT16,
      [MESA_FORMAT_RGBA_ASTC_10x5]          = BRW_SURFACEFORMAT_ASTC_LDR_2D_10x5_FLT16,
      [MESA_FORMAT_RGBA_ASTC_10x6]          = BRW_SURFACEFORMAT_ASTC_LDR_2D_10x6_FLT16,
      [MESA_FORMAT_RGBA_ASTC_10x8]          = BRW_SURFACEFORMAT_ASTC_LDR_2D_10x8_FLT16,
      [MESA_FORMAT_RGBA_ASTC_10x10]         = BRW_SURFACEFORMAT_ASTC_LDR_2D_10x10_FLT16,
      [MESA_FORMAT_RGBA_ASTC_12x10]         = BRW_SURFACEFORMAT_ASTC_LDR_2D_12x10_FLT16,
      [MESA_FORMAT_RGBA_ASTC_12x12]         = BRW_SURFACEFORMAT_ASTC_LDR_2D_12x12_FLT16,
      [MESA_FORMAT_SRGB8_ALPHA8_ASTC_4x4]   = BRW_SURFACEFORMAT_ASTC_LDR_2D_4x4_U8sRGB,
      [MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x4]   = BRW_SURFACEFORMAT_ASTC_LDR_2D_5x4_U8sRGB,
      [MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x5]   = BRW_SURFACEFORMAT_ASTC_LDR_2D_5x5_U8sRGB,
      [MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x5]   = BRW_SURFACEFORMAT_ASTC_LDR_2D_6x5_U8sRGB,
      [MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x6]   = BRW_SURFACEFORMAT_ASTC_LDR_2D_6x6_U8sRGB,
      [MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x5]   = BRW_SURFACEFORMAT_ASTC_LDR_2D_8x5_U8sRGB,
      [MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x6]   = BRW_SURFACEFORMAT_ASTC_LDR_2D_8x6_U8sRGB,
      [MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x8]   = BRW_SURFACEFORMAT_ASTC_LDR_2D_8x8_U8sRGB,
      [MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x5]  = BRW_SURFACEFORMAT_ASTC_LDR_2D_10x5_U8sRGB,
      [MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x6]  = BRW_SURFACEFORMAT_ASTC_LDR_2D_10x6_U8sRGB,
      [MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x8]  = BRW_SURFACEFORMAT_ASTC_LDR_2D_10x8_U8sRGB,
      [MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x10] = BRW_SURFACEFORMAT_ASTC_LDR_2D_10x10_U8sRGB,
      [MESA_FORMAT_SRGB8_ALPHA8_ASTC_12x10] = BRW_SURFACEFORMAT_ASTC_LDR_2D_12x10_U8sRGB,
      [MESA_FORMAT_SRGB8_ALPHA8_ASTC_12x12] = BRW_SURFACEFORMAT_ASTC_LDR_2D_12x12_U8sRGB,

      [MESA_FORMAT_A_SNORM8] = 0,
      [MESA_FORMAT_L_SNORM8] = 0,
      [MESA_FORMAT_L8A8_SNORM] = 0,
      [MESA_FORMAT_A8L8_SNORM] = 0,
      [MESA_FORMAT_I_SNORM8] = 0,
      [MESA_FORMAT_A_SNORM16] = 0,
      [MESA_FORMAT_L_SNORM16] = 0,
      [MESA_FORMAT_LA_SNORM16] = 0,
      [MESA_FORMAT_I_SNORM16] = 0,

      [MESA_FORMAT_R9G9B9E5_FLOAT] = BRW_SURFACEFORMAT_R9G9B9E5_SHAREDEXP,
      [MESA_FORMAT_R11G11B10_FLOAT] = BRW_SURFACEFORMAT_R11G11B10_FLOAT,

      [MESA_FORMAT_Z_FLOAT32] = 0,
      [MESA_FORMAT_Z32_FLOAT_S8X24_UINT] = 0,

      [MESA_FORMAT_R10G10B10A2_UNORM] = BRW_SURFACEFORMAT_R10G10B10A2_UNORM,
      [MESA_FORMAT_B10G10R10A2_UINT] = BRW_SURFACEFORMAT_B10G10R10A2_UINT,
      [MESA_FORMAT_R10G10B10A2_UINT] = BRW_SURFACEFORMAT_R10G10B10A2_UINT,

      [MESA_FORMAT_B4G4R4X4_UNORM] = 0,
      [MESA_FORMAT_B5G5R5X1_UNORM] = BRW_SURFACEFORMAT_B5G5R5X1_UNORM,
      [MESA_FORMAT_R8G8B8X8_SNORM] = 0,
      [MESA_FORMAT_R8G8B8X8_SRGB] = BRW_SURFACEFORMAT_R8G8B8X8_UNORM_SRGB,
      [MESA_FORMAT_X8B8G8R8_SRGB] = 0,
      [MESA_FORMAT_RGBX_UINT8] = 0,
      [MESA_FORMAT_RGBX_SINT8] = 0,
      [MESA_FORMAT_B10G10R10X2_UNORM] = BRW_SURFACEFORMAT_B10G10R10X2_UNORM,
      [MESA_FORMAT_RGBX_UNORM16] = BRW_SURFACEFORMAT_R16G16B16X16_UNORM,
      [MESA_FORMAT_RGBX_SNORM16] = 0,
      [MESA_FORMAT_RGBX_FLOAT16] = BRW_SURFACEFORMAT_R16G16B16X16_FLOAT,
      [MESA_FORMAT_RGBX_UINT16] = 0,
      [MESA_FORMAT_RGBX_SINT16] = 0,
      [MESA_FORMAT_RGBX_FLOAT32] = BRW_SURFACEFORMAT_R32G32B32X32_FLOAT,
      [MESA_FORMAT_RGBX_UINT32] = 0,
      [MESA_FORMAT_RGBX_SINT32] = 0,
   };
   assert(mesa_format < MESA_FORMAT_COUNT);
   return table[mesa_format];
}

void
brw_init_surface_formats(struct brw_context *brw)
{
   struct gl_context *ctx = &brw->ctx;
   int gen;
   mesa_format format;

   memset(&ctx->TextureFormatSupported, 0, sizeof(ctx->TextureFormatSupported));

   gen = brw->gen * 10;
   if (brw->is_g4x || brw->is_haswell)
      gen += 5;

   for (format = MESA_FORMAT_NONE + 1; format < MESA_FORMAT_COUNT; format++) {
      uint32_t texture, render;
      const struct brw_surface_format_info *rinfo, *tinfo;
      bool is_integer = _mesa_is_format_integer_color(format);

      render = texture = brw_format_for_mesa_format(format);
      tinfo = &surface_formats[texture];

      /* The value of BRW_SURFACEFORMAT_R32G32B32A32_FLOAT is 0, so don't skip
       * it.
       */
      if (texture == 0 && format != MESA_FORMAT_RGBA_FLOAT32)
	 continue;

      if (gen >= tinfo->sampling && (gen >= tinfo->filtering || is_integer))
	 ctx->TextureFormatSupported[format] = true;

      /* Re-map some render target formats to make them supported when they
       * wouldn't be using their format for texturing.
       */
      switch (render) {
	 /* For these formats, we just need to read/write the first
	  * channel into R, which is to say that we just treat them as
	  * GL_RED.
	  */
      case BRW_SURFACEFORMAT_I32_FLOAT:
      case BRW_SURFACEFORMAT_L32_FLOAT:
	 render = BRW_SURFACEFORMAT_R32_FLOAT;
	 break;
      case BRW_SURFACEFORMAT_I16_FLOAT:
      case BRW_SURFACEFORMAT_L16_FLOAT:
	 render = BRW_SURFACEFORMAT_R16_FLOAT;
	 break;
      case BRW_SURFACEFORMAT_I8_UNORM:
      case BRW_SURFACEFORMAT_L8_UNORM:
         render = BRW_SURFACEFORMAT_R8_UNORM;
         break;
      case BRW_SURFACEFORMAT_I16_UNORM:
      case BRW_SURFACEFORMAT_L16_UNORM:
         render = BRW_SURFACEFORMAT_R16_UNORM;
         break;
      case BRW_SURFACEFORMAT_R16G16B16X16_UNORM:
         render = BRW_SURFACEFORMAT_R16G16B16A16_UNORM;
         break;
      case BRW_SURFACEFORMAT_R16G16B16X16_FLOAT:
         render = BRW_SURFACEFORMAT_R16G16B16A16_FLOAT;
         break;
      case BRW_SURFACEFORMAT_B8G8R8X8_UNORM:
	 /* XRGB is handled as ARGB because the chips in this family
	  * cannot render to XRGB targets.  This means that we have to
	  * mask writes to alpha (ala glColorMask) and reconfigure the
	  * alpha blending hardware to use GL_ONE (or GL_ZERO) for
	  * cases where GL_DST_ALPHA (or GL_ONE_MINUS_DST_ALPHA) is
	  * used. On Gen8+ BGRX is actually allowed (but not RGBX).
	  */
         if (gen < tinfo->render_target)
            render = BRW_SURFACEFORMAT_B8G8R8A8_UNORM;
	 break;
      case BRW_SURFACEFORMAT_B8G8R8X8_UNORM_SRGB:
         if (gen < tinfo->render_target)
            render = BRW_SURFACEFORMAT_B8G8R8A8_UNORM_SRGB;
         break;
      case BRW_SURFACEFORMAT_R8G8B8X8_UNORM:
         render = BRW_SURFACEFORMAT_R8G8B8A8_UNORM;
         break;
      case BRW_SURFACEFORMAT_R8G8B8X8_UNORM_SRGB:
         render = BRW_SURFACEFORMAT_R8G8B8A8_UNORM_SRGB;
         break;
      }

      rinfo = &surface_formats[render];

      /* Note that GL_EXT_texture_integer says that blending doesn't occur for
       * integer, so we don't need hardware support for blending on it.  Other
       * than that, GL in general requires alpha blending for render targets,
       * even though we don't support it for some formats.
       */
      if (gen >= rinfo->render_target &&
	  (gen >= rinfo->alpha_blend || is_integer)) {
	 brw->render_target_format[format] = render;
	 brw->format_supported_as_render_target[format] = true;
      }
   }

   /* We will check this table for FBO completeness, but the surface format
    * table above only covered color rendering.
    */
   brw->format_supported_as_render_target[MESA_FORMAT_Z24_UNORM_S8_UINT] = true;
   brw->format_supported_as_render_target[MESA_FORMAT_Z24_UNORM_X8_UINT] = true;
   brw->format_supported_as_render_target[MESA_FORMAT_S_UINT8] = true;
   brw->format_supported_as_render_target[MESA_FORMAT_Z_FLOAT32] = true;
   brw->format_supported_as_render_target[MESA_FORMAT_Z32_FLOAT_S8X24_UINT] = true;
   if (brw->gen >= 8)
      brw->format_supported_as_render_target[MESA_FORMAT_Z_UNORM16] = true;

   /* We remap depth formats to a supported texturing format in
    * translate_tex_format().
    */
   ctx->TextureFormatSupported[MESA_FORMAT_Z24_UNORM_S8_UINT] = true;
   ctx->TextureFormatSupported[MESA_FORMAT_Z24_UNORM_X8_UINT] = true;
   ctx->TextureFormatSupported[MESA_FORMAT_Z_FLOAT32] = true;
   ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT_S8X24_UINT] = true;

   /* Benchmarking shows that Z16 is slower than Z24, so there's no reason to
    * use it unless you're under memory (not memory bandwidth) pressure.
    *
    * Apparently, the GPU's depth scoreboarding works on a 32-bit granularity,
    * which corresponds to one pixel in the depth buffer for Z24 or Z32 formats.
    * However, it corresponds to two pixels with Z16, which means both need to
    * hit the early depth case in order for it to happen.
    *
    * Other speculation is that we may be hitting increased fragment shader
    * execution from GL_LEQUAL/GL_EQUAL depth tests at reduced precision.
    *
    * With the PMA stall workaround in place, Z16 is faster than Z24, as it
    * should be.
    */
   if (brw->gen >= 8)
      ctx->TextureFormatSupported[MESA_FORMAT_Z_UNORM16] = true;

   /* The RGBX formats are not renderable. Normally these get mapped
    * internally to RGBA formats when rendering. However on Gen9+ when this
    * internal override is used fast clears don't work so they are disabled in
    * brw_meta_fast_clear. To avoid this problem we can just pretend not to
    * support RGBX formats at all. This will cause the upper layers of Mesa to
    * pick the RGBA formats instead. This works fine because when it is used
    * as a texture source the swizzle state is programmed to force the alpha
    * channel to 1.0 anyway. We could also do this for all gens except that
    * it's a bit more difficult when the hardware doesn't support texture
    * swizzling. Gens using the blorp have further problems because that
    * doesn't implement this swizzle override. We don't need to do this for
    * BGRX because that actually is supported natively on Gen8+.
    */
   if (brw->gen >= 9) {
      static const mesa_format rgbx_formats[] = {
         MESA_FORMAT_R8G8B8X8_UNORM,
         MESA_FORMAT_R8G8B8X8_SRGB,
         MESA_FORMAT_RGBX_UNORM16,
         MESA_FORMAT_RGBX_FLOAT16,
         MESA_FORMAT_RGBX_FLOAT32
      };

      for (int i = 0; i < ARRAY_SIZE(rgbx_formats); i++) {
         ctx->TextureFormatSupported[rgbx_formats[i]] = false;
         brw->format_supported_as_render_target[rgbx_formats[i]] = false;
      }
   }

   /* On hardware that lacks support for ETC1, we map ETC1 to RGBX
    * during glCompressedTexImage2D(). See intel_mipmap_tree::wraps_etc1.
    */
   ctx->TextureFormatSupported[MESA_FORMAT_ETC1_RGB8] = true;

   /* On hardware that lacks support for ETC2, we map ETC2 to a suitable
    * MESA_FORMAT during glCompressedTexImage2D().
    * See intel_mipmap_tree::wraps_etc2.
    */
   ctx->TextureFormatSupported[MESA_FORMAT_ETC2_RGB8] = true;
   ctx->TextureFormatSupported[MESA_FORMAT_ETC2_SRGB8] = true;
   ctx->TextureFormatSupported[MESA_FORMAT_ETC2_RGBA8_EAC] = true;
   ctx->TextureFormatSupported[MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC] = true;
   ctx->TextureFormatSupported[MESA_FORMAT_ETC2_R11_EAC] = true;
   ctx->TextureFormatSupported[MESA_FORMAT_ETC2_RG11_EAC] = true;
   ctx->TextureFormatSupported[MESA_FORMAT_ETC2_SIGNED_R11_EAC] = true;
   ctx->TextureFormatSupported[MESA_FORMAT_ETC2_SIGNED_RG11_EAC] = true;
   ctx->TextureFormatSupported[MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1] = true;
   ctx->TextureFormatSupported[MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1] = true;
}

bool
brw_render_target_supported(struct brw_context *brw,
			    struct gl_renderbuffer *rb)
{
   mesa_format format = rb->Format;

   /* Many integer formats are promoted to RGBA (like XRGB8888 is), which means
    * we would consider them renderable even though we don't have surface
    * support for their alpha behavior and don't have the blending unit
    * available to fake it like we do for XRGB8888.  Force them to being
    * unsupported.
    */
   if (_mesa_is_format_integer_color(format) &&
       rb->_BaseFormat != GL_RGBA &&
       rb->_BaseFormat != GL_RG &&
       rb->_BaseFormat != GL_RED)
      return false;

   /* Under some conditions, MSAA is not supported for formats whose width is
    * more than 64 bits.
    */
   if (rb->NumSamples > 0 && _mesa_get_format_bytes(format) > 8) {
      /* Gen6: MSAA on >64 bit formats is unsupported. */
      if (brw->gen <= 6)
         return false;

      /* Gen7: 8x MSAA on >64 bit formats is unsupported. */
      if (rb->NumSamples >= 8)
         return false;
   }

   return brw->format_supported_as_render_target[format];
}

/*
 * True if the underlying hardware format can support lossless color
 * compression.
 */
bool
brw_losslessly_compressible_format(const struct brw_context *brw,
                                   uint32_t brw_format)
{
   const struct brw_surface_format_info * const sinfo =
      &surface_formats[brw_format];
   const int gen = brw->gen * 10;

   assert(brw->gen >= 9);

   if (gen >= sinfo->lossless_compression)
      return true;

   return false;
}

GLuint
translate_tex_format(struct brw_context *brw,
                     mesa_format mesa_format,
		     GLenum srgb_decode)
{
   struct gl_context *ctx = &brw->ctx;
   if (srgb_decode == GL_SKIP_DECODE_EXT)
      mesa_format = _mesa_get_srgb_format_linear(mesa_format);

   switch( mesa_format ) {

   case MESA_FORMAT_Z_UNORM16:
      return BRW_SURFACEFORMAT_R16_UNORM;

   case MESA_FORMAT_Z24_UNORM_S8_UINT:
   case MESA_FORMAT_Z24_UNORM_X8_UINT:
      return BRW_SURFACEFORMAT_R24_UNORM_X8_TYPELESS;

   case MESA_FORMAT_Z_FLOAT32:
      return BRW_SURFACEFORMAT_R32_FLOAT;

   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
      return BRW_SURFACEFORMAT_R32_FLOAT_X8X24_TYPELESS;

   case MESA_FORMAT_RGBA_FLOAT32:
      /* The value of this BRW_SURFACEFORMAT is 0, which tricks the
       * assertion below.
       */
      return BRW_SURFACEFORMAT_R32G32B32A32_FLOAT;

   case MESA_FORMAT_SRGB_DXT1:
      if (brw->gen == 4 && !brw->is_g4x) {
         /* Work around missing SRGB DXT1 support on original gen4 by just
          * skipping SRGB decode.  It's not worth not supporting sRGB in
          * general to prevent this.
          */
         WARN_ONCE(true, "Demoting sRGB DXT1 texture to non-sRGB\n");
         mesa_format = MESA_FORMAT_RGB_DXT1;
      }
      return brw_format_for_mesa_format(mesa_format);

   case MESA_FORMAT_RGBA_ASTC_4x4:
   case MESA_FORMAT_RGBA_ASTC_5x4:
   case MESA_FORMAT_RGBA_ASTC_5x5:
   case MESA_FORMAT_RGBA_ASTC_6x5:
   case MESA_FORMAT_RGBA_ASTC_6x6:
   case MESA_FORMAT_RGBA_ASTC_8x5:
   case MESA_FORMAT_RGBA_ASTC_8x6:
   case MESA_FORMAT_RGBA_ASTC_8x8:
   case MESA_FORMAT_RGBA_ASTC_10x5:
   case MESA_FORMAT_RGBA_ASTC_10x6:
   case MESA_FORMAT_RGBA_ASTC_10x8:
   case MESA_FORMAT_RGBA_ASTC_10x10:
   case MESA_FORMAT_RGBA_ASTC_12x10:
   case MESA_FORMAT_RGBA_ASTC_12x12: {
      GLuint brw_fmt = brw_format_for_mesa_format(mesa_format);

      /**
       * On Gen9+, it is possible to process these formats using the LDR
       * Profile or the Full Profile mode of the hardware. Because, it isn't
       * possible to determine if an HDR or LDR texture is being rendered, we
       * can't determine which mode to enable in the hardware. Therefore, to
       * handle all cases, always default to Full profile unless we are
       * processing sRGBs, which are incompatible with this mode.
       */
      if (brw->gen >= 9)
         brw_fmt |= GEN9_SURFACE_ASTC_HDR_FORMAT_BIT;

      return brw_fmt;
   }

   default:
      assert(brw_format_for_mesa_format(mesa_format) != 0);
      return brw_format_for_mesa_format(mesa_format);
   }
}

/**
 * Convert a MESA_FORMAT to the corresponding BRW_DEPTHFORMAT enum.
 */
uint32_t
brw_depth_format(struct brw_context *brw, mesa_format format)
{
   switch (format) {
   case MESA_FORMAT_Z_UNORM16:
      return BRW_DEPTHFORMAT_D16_UNORM;
   case MESA_FORMAT_Z_FLOAT32:
      return BRW_DEPTHFORMAT_D32_FLOAT;
   case MESA_FORMAT_Z24_UNORM_X8_UINT:
      if (brw->gen >= 6) {
         return BRW_DEPTHFORMAT_D24_UNORM_X8_UINT;
      } else {
         /* Use D24_UNORM_S8, not D24_UNORM_X8.
          *
          * D24_UNORM_X8 was not introduced until Gen5. (See the Ironlake PRM,
          * Volume 2, Part 1, Section 8.4.6 "Depth/Stencil Buffer State", Bits
          * 3DSTATE_DEPTH_BUFFER.Surface_Format).
          *
          * However, on Gen5, D24_UNORM_X8 may be used only if separate
          * stencil is enabled, and we never enable it. From the Ironlake PRM,
          * same section as above, 3DSTATE_DEPTH_BUFFER's
          * "Separate Stencil Buffer Enable" bit:
          *
          * "If this field is disabled, the Surface Format of the depth
          *  buffer cannot be D24_UNORM_X8_UINT."
          */
         return BRW_DEPTHFORMAT_D24_UNORM_S8_UINT;
      }
   case MESA_FORMAT_Z24_UNORM_S8_UINT:
      return BRW_DEPTHFORMAT_D24_UNORM_S8_UINT;
   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
      return BRW_DEPTHFORMAT_D32_FLOAT_S8X24_UINT;
   default:
      unreachable("Unexpected depth format.");
   }
}

mesa_format
brw_lower_mesa_image_format(const struct brw_device_info *devinfo,
                            mesa_format format)
{
   switch (format) {
   /* These are never lowered.  Up to BDW we'll have to fall back to untyped
    * surface access for 128bpp formats.
    */
   case MESA_FORMAT_RGBA_UINT32:
   case MESA_FORMAT_RGBA_SINT32:
   case MESA_FORMAT_RGBA_FLOAT32:
   case MESA_FORMAT_R_UINT32:
   case MESA_FORMAT_R_SINT32:
   case MESA_FORMAT_R_FLOAT32:
      return format;

   /* From HSW to BDW the only 64bpp format supported for typed access is
    * RGBA_UINT16.  IVB falls back to untyped.
    */
   case MESA_FORMAT_RGBA_UINT16:
   case MESA_FORMAT_RGBA_SINT16:
   case MESA_FORMAT_RGBA_FLOAT16:
   case MESA_FORMAT_RG_UINT32:
   case MESA_FORMAT_RG_SINT32:
   case MESA_FORMAT_RG_FLOAT32:
      return (devinfo->gen >= 9 ? format :
              devinfo->gen >= 8 || devinfo->is_haswell ?
              MESA_FORMAT_RGBA_UINT16 : MESA_FORMAT_RG_UINT32);

   /* Up to BDW no SINT or FLOAT formats of less than 32 bits per component
    * are supported.  IVB doesn't support formats with more than one component
    * for typed access.  For 8 and 16 bpp formats IVB relies on the
    * undocumented behavior that typed reads from R_UINT8 and R_UINT16
    * surfaces actually do a 32-bit misaligned read.  The alternative would be
    * to use two surface state entries with different formats for each image,
    * one for reading (using R_UINT32) and another one for writing (using
    * R_UINT8 or R_UINT16), but that would complicate the shaders we generate
    * even more.
    */
   case MESA_FORMAT_RGBA_UINT8:
   case MESA_FORMAT_RGBA_SINT8:
      return (devinfo->gen >= 9 ? format :
              devinfo->gen >= 8 || devinfo->is_haswell ?
              MESA_FORMAT_RGBA_UINT8 : MESA_FORMAT_R_UINT32);

   case MESA_FORMAT_RG_UINT16:
   case MESA_FORMAT_RG_SINT16:
   case MESA_FORMAT_RG_FLOAT16:
      return (devinfo->gen >= 9 ? format :
              devinfo->gen >= 8 || devinfo->is_haswell ?
              MESA_FORMAT_RG_UINT16 : MESA_FORMAT_R_UINT32);

   case MESA_FORMAT_RG_UINT8:
   case MESA_FORMAT_RG_SINT8:
      return (devinfo->gen >= 9 ? format :
              devinfo->gen >= 8 || devinfo->is_haswell ?
              MESA_FORMAT_RG_UINT8 : MESA_FORMAT_R_UINT16);

   case MESA_FORMAT_R_UINT16:
   case MESA_FORMAT_R_FLOAT16:
   case MESA_FORMAT_R_SINT16:
      return (devinfo->gen >= 9 ? format : MESA_FORMAT_R_UINT16);

   case MESA_FORMAT_R_UINT8:
   case MESA_FORMAT_R_SINT8:
      return (devinfo->gen >= 9 ? format : MESA_FORMAT_R_UINT8);

   /* Neither the 2/10/10/10 nor the 11/11/10 packed formats are supported
    * by the hardware.
    */
   case MESA_FORMAT_R10G10B10A2_UINT:
   case MESA_FORMAT_R10G10B10A2_UNORM:
   case MESA_FORMAT_R11G11B10_FLOAT:
      return MESA_FORMAT_R_UINT32;

   /* No normalized fixed-point formats are supported by the hardware. */
   case MESA_FORMAT_RGBA_UNORM16:
   case MESA_FORMAT_RGBA_SNORM16:
      return (devinfo->gen >= 8 || devinfo->is_haswell ?
              MESA_FORMAT_RGBA_UINT16 : MESA_FORMAT_RG_UINT32);

   case MESA_FORMAT_R8G8B8A8_UNORM:
   case MESA_FORMAT_R8G8B8A8_SNORM:
      return (devinfo->gen >= 8 || devinfo->is_haswell ?
              MESA_FORMAT_RGBA_UINT8 : MESA_FORMAT_R_UINT32);

   case MESA_FORMAT_R16G16_UNORM:
   case MESA_FORMAT_R16G16_SNORM:
      return (devinfo->gen >= 8 || devinfo->is_haswell ?
              MESA_FORMAT_RG_UINT16 : MESA_FORMAT_R_UINT32);

   case MESA_FORMAT_R8G8_UNORM:
   case MESA_FORMAT_R8G8_SNORM:
      return (devinfo->gen >= 8 || devinfo->is_haswell ?
              MESA_FORMAT_RG_UINT8 : MESA_FORMAT_R_UINT16);

   case MESA_FORMAT_R_UNORM16:
   case MESA_FORMAT_R_SNORM16:
      return MESA_FORMAT_R_UINT16;

   case MESA_FORMAT_R_UNORM8:
   case MESA_FORMAT_R_SNORM8:
      return MESA_FORMAT_R_UINT8;

   default:
      unreachable("Unknown image format");
   }
}
