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fuchsia / third_party / mesa / 5feb926e05c0a5f8bae42a4dd7491273e5ed19ce / . / src / intel / isl / isl_format.c
blob: ae6df522359c2c24b1f0cac876a4ae48fc8d7208 [file] [log] [blame]
/*
* Copyright 2015 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 <assert.h>
#include "isl.h"
#include "isl_priv.h"
#include "dev/gen_device_info.h"
#include "main/macros.h" /* Needed for MAX3 and MAX2 for format_rgb9e5 */
#include "util/format_srgb.h"
#include "util/format_rgb9e5.h"
#include "util/format_r11g11b10f.h"
/* Header-only format conversion include */
#include "main/format_utils.h"
struct surface_format_info {
bool exists;
uint8_t sampling;
uint8_t filtering;
uint8_t shadow_compare;
uint8_t chroma_key;
uint8_t render_target;
uint8_t alpha_blend;
uint8_t input_vb;
uint8_t streamed_output_vb;
uint8_t color_processing;
uint8_t typed_write;
uint8_t typed_read;
uint8_t ccs_e;
};
/* 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, tw, tr, ccs_e, sf) \
[ISL_FORMAT_##sf] = { true, sampl, filt, shad, ck, rt, ab, vb, so, color, tw, tr, ccs_e},
#define Y 0
#define x 255
/**
* 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+]
*/
static const struct surface_format_info format_info[] = {
/* smpl filt shad CK RT AB VB SO color TW TR ccs_e */
SF( Y, 50, x, x, Y, Y, Y, Y, x, 70, 90, 90, R32G32B32A32_FLOAT)
SF( Y, x, x, x, Y, x, Y, Y, x, 70, 90, 90, R32G32B32A32_SINT)
SF( Y, x, x, x, Y, x, Y, Y, x, 70, 90, 90, R32G32B32A32_UINT)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32B32A32_UNORM)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32B32A32_SNORM)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R64G64_FLOAT)
SF( Y, 50, x, x, 100, 100, x, x, x, x, x, 100, R32G32B32X32_FLOAT)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32B32A32_SSCALED)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32B32A32_USCALED)
SF( x, x, x, x, x, x, 75, x, x, x, x, x, R32G32B32A32_SFIXED)
SF( x, x, x, x, x, x, 80, x, x, x, x, x, R64G64_PASSTHRU)
SF( Y, 50, x, x, x, x, Y, Y, x, x, x, x, R32G32B32_FLOAT)
SF( Y, x, x, x, x, x, Y, Y, x, x, x, x, R32G32B32_SINT)
SF( Y, x, x, x, x, x, Y, Y, x, x, x, x, R32G32B32_UINT)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32B32_UNORM)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32B32_SNORM)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32B32_SSCALED)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32B32_USCALED)
SF( x, x, x, x, x, x, 75, x, x, x, x, x, R32G32B32_SFIXED)
SF( Y, Y, x, x, Y, 45, Y, x, 60, 70, 110, 90, R16G16B16A16_UNORM)
SF( Y, Y, x, x, Y, 60, Y, x, x, 70, 110, 90, R16G16B16A16_SNORM)
SF( Y, x, x, x, Y, x, Y, x, x, 70, 90, 90, R16G16B16A16_SINT)
SF( Y, x, x, x, Y, x, Y, x, x, 70, 75, 90, R16G16B16A16_UINT)
SF( Y, Y, x, x, Y, Y, Y, x, x, 70, 90, 90, R16G16B16A16_FLOAT)
SF( Y, 50, x, x, Y, Y, Y, Y, x, 70, 90, 90, R32G32_FLOAT)
SF( Y, 70, x, x, Y, Y, Y, Y, x, x, x, x, R32G32_FLOAT_LD)
SF( Y, x, x, x, Y, x, Y, Y, x, 70, 90, 90, R32G32_SINT)
SF( Y, x, x, x, Y, x, Y, Y, x, 70, 90, 90, R32G32_UINT)
SF( Y, 50, Y, x, x, x, x, x, x, x, x, x, R32_FLOAT_X8X24_TYPELESS)
SF( Y, x, x, x, x, x, x, x, x, x, x, x, X32_TYPELESS_G8X24_UINT)
SF( Y, 50, x, x, x, x, x, x, x, x, x, x, L32A32_FLOAT)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32_UNORM)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32_SNORM)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R64_FLOAT)
SF( Y, Y, x, x, x, x, x, x, x, x, x, x, R16G16B16X16_UNORM)
SF( Y, Y, x, x, 90, 90, x, x, x, x, x, 90, R16G16B16X16_FLOAT)
SF( Y, 50, x, x, x, x, x, x, x, x, x, x, A32X32_FLOAT)
SF( Y, 50, x, x, x, x, x, x, x, x, x, x, L32X32_FLOAT)
SF( Y, 50, x, x, x, x, x, x, x, x, x, x, I32X32_FLOAT)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R16G16B16A16_SSCALED)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R16G16B16A16_USCALED)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32_SSCALED)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32G32_USCALED)
SF( x, x, x, x, x, x, 75, x, x, x, x, x, R32G32_SFIXED)
SF( x, x, x, x, x, x, 80, x, x, x, x, x, R64_PASSTHRU)
SF( Y, Y, x, Y, Y, Y, Y, x, 60, 70, x, 90, B8G8R8A8_UNORM)
SF( Y, Y, x, x, Y, Y, x, x, x, x, x, 100, B8G8R8A8_UNORM_SRGB)
/* smpl filt shad CK RT AB VB SO color TW TR ccs_e */
SF( Y, Y, x, x, Y, Y, Y, x, 60, 70, x, 100, R10G10B10A2_UNORM)
SF( Y, Y, x, x, x, x, x, x, 60, x, x, 120, R10G10B10A2_UNORM_SRGB)
SF( Y, x, x, x, Y, x, Y, x, x, 70, x, 100, R10G10B10A2_UINT)
SF( Y, Y, x, x, x, x, Y, x, x, x, x, x, R10G10B10_SNORM_A2_UNORM)
SF( Y, Y, x, x, Y, Y, Y, x, 60, 70, 110, 90, R8G8B8A8_UNORM)
SF( Y, Y, x, x, Y, Y, x, x, 60, x, x, 100, R8G8B8A8_UNORM_SRGB)
SF( Y, Y, x, x, Y, 60, Y, x, x, 70, 110, 90, R8G8B8A8_SNORM)
SF( Y, x, x, x, Y, x, Y, x, x, 70, 90, 90, R8G8B8A8_SINT)
SF( Y, x, x, x, Y, x, Y, x, x, 70, 75, 90, R8G8B8A8_UINT)
SF( Y, Y, x, x, Y, 45, Y, x, x, 70, 110, 90, R16G16_UNORM)
SF( Y, Y, x, x, Y, 60, Y, x, x, 70, 110, 90, R16G16_SNORM)
SF( Y, x, x, x, Y, x, Y, x, x, 70, 90, 90, R16G16_SINT)
SF( Y, x, x, x, Y, x, Y, x, x, 70, 75, 90, R16G16_UINT)
SF( Y, Y, x, x, Y, Y, Y, x, x, 70, 90, 90, R16G16_FLOAT)
SF( Y, Y, x, x, Y, Y, 75, x, 60, 70, x, 100, B10G10R10A2_UNORM)
SF( Y, Y, x, x, Y, Y, x, x, 60, x, x, 100, B10G10R10A2_UNORM_SRGB)
SF( Y, Y, x, x, Y, Y, Y, x, x, 70, x, 100, R11G11B10_FLOAT)
SF(120, 120, x, x, 120, 120, x, x, x, x, x, 120, R10G10B10_FLOAT_A2_UNORM)
SF( Y, x, x, x, Y, x, Y, Y, x, 70, 70, 90, R32_SINT)
SF( Y, x, x, x, Y, x, Y, Y, x, 70, 70, 90, R32_UINT)
SF( Y, 50, Y, x, Y, Y, Y, Y, x, 70, 70, 90, R32_FLOAT)
SF( Y, 50, Y, x, x, x, x, x, x, x, x, 120, R24_UNORM_X8_TYPELESS)
SF( Y, x, x, x, x, x, x, x, x, x, x, x, X24_TYPELESS_G8_UINT)
SF( Y, Y, x, x, x, x, x, x, x, x, x, x, L16A16_UNORM)
SF( Y, 50, Y, x, x, x, x, x, x, x, x, x, I24X8_UNORM)
SF( Y, 50, Y, x, x, x, x, x, x, x, x, x, L24X8_UNORM)
SF( Y, 50, Y, x, x, x, x, x, x, x, x, x, A24X8_UNORM)
SF( Y, 50, Y, x, x, x, x, x, x, x, x, x, I32_FLOAT)
SF( Y, 50, Y, x, x, x, x, x, x, x, x, x, L32_FLOAT)
SF( Y, 50, Y, x, x, x, x, x, x, x, x, x, A32_FLOAT)
SF( Y, Y, x, Y, 80, 80, x, x, 60, x, x, 90, B8G8R8X8_UNORM)
SF( Y, Y, x, x, 80, 80, x, x, x, x, x, 100, B8G8R8X8_UNORM_SRGB)
SF( Y, Y, x, x, x, x, x, x, x, x, x, x, R8G8B8X8_UNORM)
SF( Y, Y, x, x, x, x, x, x, x, x, x, x, R8G8B8X8_UNORM_SRGB)
SF( Y, Y, x, x, x, x, x, x, x, x, x, x, R9G9B9E5_SHAREDEXP)
SF( Y, Y, x, x, x, x, x, x, x, x, x, x, B10G10R10X2_UNORM)
SF( Y, Y, x, x, x, x, x, x, x, x, x, x, L16A16_FLOAT)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32_UNORM)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32_SNORM)
/* smpl filt shad CK RT AB VB SO color TW TR ccs_e */
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R10G10B10X2_USCALED)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R8G8B8A8_SSCALED)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R8G8B8A8_USCALED)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R16G16_SSCALED)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R16G16_USCALED)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32_SSCALED)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R32_USCALED)
SF( Y, Y, x, Y, Y, Y, x, x, x, 70, x, 120, B5G6R5_UNORM)
SF( Y, Y, x, x, Y, Y, x, x, x, x, x, 120, B5G6R5_UNORM_SRGB)
SF( Y, Y, x, Y, Y, Y, x, x, x, 70, x, 120, B5G5R5A1_UNORM)
SF( Y, Y, x, x, Y, Y, x, x, x, x, x, 120, B5G5R5A1_UNORM_SRGB)
SF( Y, Y, x, Y, Y, Y, x, x, x, 70, x, 120, B4G4R4A4_UNORM)
SF( Y, Y, x, x, Y, Y, x, x, x, x, x, 120, B4G4R4A4_UNORM_SRGB)
SF( Y, Y, x, x, Y, Y, Y, x, x, 70, 110, 120, R8G8_UNORM)
SF( Y, Y, x, Y, Y, 60, Y, x, x, 70, 110, 120, R8G8_SNORM)
SF( Y, x, x, x, Y, x, Y, x, x, 70, 90, 120, R8G8_SINT)
SF( Y, x, x, x, Y, x, Y, x, x, 70, 75, 120, R8G8_UINT)
SF( Y, Y, Y, x, Y, 45, Y, x, 70, 70, 110, 120, R16_UNORM)
SF( Y, Y, x, x, Y, 60, Y, x, x, 70, 110, 120, R16_SNORM)
SF( Y, x, x, x, Y, x, Y, x, x, 70, 90, 120, R16_SINT)
SF( Y, x, x, x, Y, x, Y, x, x, 70, 75, 120, R16_UINT)
SF( Y, Y, x, x, Y, Y, Y, x, x, 70, 90, 120, R16_FLOAT)
SF( 50, 50, x, x, x, x, x, x, x, x, x, x, A8P8_UNORM_PALETTE0)
SF( 50, 50, x, x, x, x, x, x, x, x, x, x, A8P8_UNORM_PALETTE1)
SF( Y, Y, Y, x, x, x, x, x, x, x, x, x, I16_UNORM)
SF( Y, Y, Y, x, x, x, x, x, x, x, x, x, L16_UNORM)
SF( Y, Y, Y, x, x, x, x, x, x, x, x, x, A16_UNORM)
SF( Y, Y, x, Y, x, x, x, x, x, x, x, x, L8A8_UNORM)
SF( Y, Y, Y, x, x, x, x, x, x, x, x, x, I16_FLOAT)
SF( Y, Y, Y, x, x, x, x, x, x, x, x, x, L16_FLOAT)
SF( Y, Y, Y, x, x, x, x, x, x, x, x, x, A16_FLOAT)
SF( 45, 45, x, x, x, x, x, x, x, x, x, x, L8A8_UNORM_SRGB)
SF( Y, Y, x, Y, x, x, x, x, x, x, x, x, R5G5_SNORM_B6_UNORM)
SF( x, x, x, x, Y, Y, x, x, x, 70, x, 120, B5G5R5X1_UNORM)
SF( x, x, x, x, Y, Y, x, x, x, x, x, 120, B5G5R5X1_UNORM_SRGB)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R8G8_SSCALED)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R8G8_USCALED)
/* smpl filt shad CK RT AB VB SO color TW TR ccs_e */
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R16_SSCALED)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R16_USCALED)
SF( 50, 50, x, x, x, x, x, x, x, x, x, x, P8A8_UNORM_PALETTE0)
SF( 50, 50, x, x, x, x, x, x, x, x, x, x, P8A8_UNORM_PALETTE1)
SF(120, 120, x, x, 120, 120, x, x, x, x, x, 120, A1B5G5R5_UNORM)
/* According to the PRM, A4B4G4R4_UNORM isn't supported until Sky Lake
* but empirical testing indicates that at least sampling works just fine
* on Broadwell.
*/
SF( 80, 80, x, x, 90, 120, x, x, x, x, x, 120, A4B4G4R4_UNORM)
SF( 90, x, x, x, x, x, x, x, x, x, x, x, L8A8_UINT)
SF( 90, x, x, x, x, x, x, x, x, x, x, x, L8A8_SINT)
SF( Y, Y, x, 45, Y, Y, Y, x, x, 70, 110, 120, R8_UNORM)
SF( Y, Y, x, x, Y, 60, Y, x, x, 70, 110, 120, R8_SNORM)
SF( Y, x, x, x, Y, x, Y, x, x, 70, 90, 120, R8_SINT)
SF( Y, x, x, x, Y, x, Y, x, x, 70, 75, 120, R8_UINT)
SF( Y, Y, x, Y, Y, Y, x, x, x, 70, 110, 120, A8_UNORM)
SF( Y, Y, x, x, x, x, x, x, x, x, x, x, I8_UNORM)
SF( Y, Y, x, Y, x, x, x, x, x, x, x, x, L8_UNORM)
SF( Y, Y, x, x, x, x, x, x, x, x, x, x, P4A4_UNORM_PALETTE0)
SF( Y, Y, x, x, x, x, x, x, x, x, x, x, A4P4_UNORM_PALETTE0)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R8_SSCALED)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R8_USCALED)
SF( 45, 45, x, x, x, x, x, x, x, x, x, x, P8_UNORM_PALETTE0)
SF( 45, 45, x, x, x, x, x, x, x, x, x, x, L8_UNORM_SRGB)
SF( 45, 45, x, x, x, x, x, x, x, x, x, x, P8_UNORM_PALETTE1)
SF( 45, 45, x, x, x, x, x, x, x, x, x, x, P4A4_UNORM_PALETTE1)
SF( 45, 45, x, x, x, x, x, x, x, x, x, x, A4P4_UNORM_PALETTE1)
SF( x, x, x, x, x, x, x, x, x, x, x, x, Y8_UNORM)
SF( 90, x, x, x, x, x, x, x, x, x, x, x, L8_UINT)
SF( 90, x, x, x, x, x, x, x, x, x, x, x, L8_SINT)
SF( 90, x, x, x, x, x, x, x, x, x, x, x, I8_UINT)
SF( 90, x, x, x, x, x, x, x, x, x, x, x, I8_SINT)
SF( 45, 45, x, x, x, x, x, x, x, x, x, x, DXT1_RGB_SRGB)
SF( Y, Y, x, x, x, x, x, x, x, x, x, x, R1_UNORM)
SF( Y, Y, x, Y, Y, x, x, x, 60, x, x, x, YCRCB_NORMAL)
SF( Y, Y, x, Y, Y, x, x, x, 60, x, x, x, YCRCB_SWAPUVY)
SF( 45, 45, x, x, x, x, x, x, x, x, x, x, P2_UNORM_PALETTE0)
SF( 45, 45, x, x, x, x, x, x, x, x, x, x, P2_UNORM_PALETTE1)
SF( Y, Y, x, Y, x, x, x, x, x, x, x, x, BC1_UNORM)
SF( Y, Y, x, Y, x, x, x, x, x, x, x, x, BC2_UNORM)
SF( Y, Y, x, Y, x, x, x, x, x, x, x, x, BC3_UNORM)
SF( Y, Y, x, x, x, x, x, x, x, x, x, x, BC4_UNORM)
SF( Y, Y, x, x, x, x, x, x, x, x, x, x, BC5_UNORM)
SF( Y, Y, x, x, x, x, x, x, x, x, x, x, BC1_UNORM_SRGB)
SF( Y, Y, x, x, x, x, x, x, x, x, x, x, BC2_UNORM_SRGB)
SF( Y, Y, x, x, x, x, x, x, x, x, x, x, BC3_UNORM_SRGB)
SF( Y, x, x, x, x, x, x, x, x, x, x, x, MONO8)
SF( Y, Y, x, x, Y, x, x, x, 60, x, x, x, YCRCB_SWAPUV)
SF( Y, Y, x, x, Y, x, x, x, 60, x, x, x, YCRCB_SWAPY)
SF( Y, Y, x, x, x, x, x, x, x, x, x, x, DXT1_RGB)
/* smpl filt shad CK RT AB VB SO color TW TR ccs_e */
SF( Y, Y, x, x, x, x, x, x, x, x, x, x, FXT1)
SF( 75, 75, x, x, x, x, Y, x, x, x, x, x, R8G8B8_UNORM)
SF( 75, 75, x, x, x, x, Y, x, x, x, x, x, R8G8B8_SNORM)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R8G8B8_SSCALED)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R8G8B8_USCALED)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R64G64B64A64_FLOAT)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R64G64B64_FLOAT)
SF( Y, Y, x, x, x, x, x, x, x, x, x, x, BC4_SNORM)
SF( Y, Y, x, x, x, x, x, x, x, x, x, x, BC5_SNORM)
SF( 50, 50, x, x, x, x, 60, x, x, x, x, x, R16G16B16_FLOAT)
SF( 75, 75, x, x, x, x, Y, x, x, x, x, x, R16G16B16_UNORM)
SF( 75, 75, x, x, x, x, Y, x, x, x, x, x, R16G16B16_SNORM)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R16G16B16_SSCALED)
SF( x, x, x, x, x, x, Y, x, x, x, x, x, R16G16B16_USCALED)
SF( 70, 70, x, x, x, x, x, x, x, x, x, x, BC6H_SF16)
SF( 70, 70, x, x, x, x, x, x, x, x, x, x, BC7_UNORM)
SF( 70, 70, x, x, x, x, x, x, x, x, x, x, BC7_UNORM_SRGB)
SF( 70, 70, x, x, x, x, x, x, x, x, x, x, BC6H_UF16)
SF( x, x, x, x, x, x, x, x, x, x, x, x, PLANAR_420_8)
/* The format enum for R8G8B8_UNORM_SRGB first shows up in the HSW PRM but
* empirical testing indicates that it doesn't actually sRGB decode and
* acts identical to R8G8B8_UNORM. It does work on gen8+.
*/
SF( 80, 80, x, x, x, x, x, x, x, x, x, x, R8G8B8_UNORM_SRGB)
SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC1_RGB8)
SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC2_RGB8)
SF( 80, 80, x, x, x, x, x, x, x, x, x, x, EAC_R11)
SF( 80, 80, x, x, x, x, x, x, x, x, x, x, EAC_RG11)
SF( 80, 80, x, x, x, x, x, x, x, x, x, x, EAC_SIGNED_R11)
SF( 80, 80, x, x, x, x, x, x, x, x, x, x, EAC_SIGNED_RG11)
SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC2_SRGB8)
SF( 90, x, x, x, x, x, 75, x, x, x, x, x, R16G16B16_UINT)
SF( 90, x, x, x, x, x, 75, x, x, x, x, x, R16G16B16_SINT)
SF( x, x, x, x, x, x, 75, x, x, x, x, x, R32_SFIXED)
SF( x, x, x, x, x, x, 75, x, x, x, x, x, R10G10B10A2_SNORM)
SF( x, x, x, x, x, x, 75, x, x, x, x, x, R10G10B10A2_USCALED)
SF( x, x, x, x, x, x, 75, x, x, x, x, x, R10G10B10A2_SSCALED)
SF( x, x, x, x, x, x, 75, x, x, x, x, x, R10G10B10A2_SINT)
SF( x, x, x, x, x, x, 75, x, x, x, x, x, B10G10R10A2_SNORM)
SF( x, x, x, x, x, x, 75, x, x, x, x, x, B10G10R10A2_USCALED)
SF( x, x, x, x, x, x, 75, x, x, x, x, x, B10G10R10A2_SSCALED)
SF( x, x, x, x, x, x, 75, x, x, x, x, x, B10G10R10A2_UINT)
SF( x, x, x, x, x, x, 75, x, x, x, x, x, B10G10R10A2_SINT)
SF( x, x, x, x, x, x, 80, x, x, x, x, x, R64G64B64A64_PASSTHRU)
SF( x, x, x, x, x, x, 80, x, x, x, x, x, R64G64B64_PASSTHRU)
SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC2_RGB8_PTA)
SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC2_SRGB8_PTA)
SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC2_EAC_RGBA8)
SF( 80, 80, x, x, x, x, x, x, x, x, x, x, ETC2_EAC_SRGB8_A8)
SF( 90, x, x, x, x, x, 75, x, x, x, x, x, R8G8B8_UINT)
SF( 90, x, x, x, x, x, 75, x, x, x, x, x, R8G8B8_SINT)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_4X4_FLT16)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_5X4_FLT16)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_5X5_FLT16)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_6X5_FLT16)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_6X6_FLT16)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_8X5_FLT16)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_8X6_FLT16)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_8X8_FLT16)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X5_FLT16)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X6_FLT16)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X8_FLT16)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X10_FLT16)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_12X10_FLT16)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_12X12_FLT16)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_4X4_U8SRGB)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_5X4_U8SRGB)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_5X5_U8SRGB)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_6X5_U8SRGB)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_6X6_U8SRGB)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_8X5_U8SRGB)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_8X6_U8SRGB)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_8X8_U8SRGB)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X5_U8SRGB)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X6_U8SRGB)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X8_U8SRGB)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_10X10_U8SRGB)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_12X10_U8SRGB)
SF( 90, 90, x, x, x, x, x, x, x, x, x, x, ASTC_LDR_2D_12X12_U8SRGB)
SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_4X4_FLT16)
SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_5X4_FLT16)
SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_5X5_FLT16)
SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_6X5_FLT16)
SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_6X6_FLT16)
SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_8X5_FLT16)
SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_8X6_FLT16)
SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_8X8_FLT16)
SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_10X5_FLT16)
SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_10X6_FLT16)
SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_10X8_FLT16)
SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_10X10_FLT16)
SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_12X10_FLT16)
SF(100, 100, x, x, x, x, x, x, x, x, x, x, ASTC_HDR_2D_12X12_FLT16)
};
#undef x
#undef Y
static unsigned
format_gen(const struct gen_device_info *devinfo)
{
return devinfo->gen * 10 + (devinfo->is_g4x || devinfo->is_haswell) * 5;
}
static bool
format_info_exists(enum isl_format format)
{
assert(format != ISL_FORMAT_UNSUPPORTED);
assert(format < ISL_NUM_FORMATS);
return format < ARRAY_SIZE(format_info) && format_info[format].exists;
}
bool
isl_format_supports_rendering(const struct gen_device_info *devinfo,
enum isl_format format)
{
if (!format_info_exists(format))
return false;
return format_gen(devinfo) >= format_info[format].render_target;
}
bool
isl_format_supports_alpha_blending(const struct gen_device_info *devinfo,
enum isl_format format)
{
if (!format_info_exists(format))
return false;
return format_gen(devinfo) >= format_info[format].alpha_blend;
}
bool
isl_format_supports_sampling(const struct gen_device_info *devinfo,
enum isl_format format)
{
if (!format_info_exists(format))
return false;
if (devinfo->is_baytrail) {
const struct isl_format_layout *fmtl = isl_format_get_layout(format);
/* Support for ETC1 and ETC2 exists on Bay Trail even though big-core
* GPUs didn't get it until Broadwell.
*/
if (fmtl->txc == ISL_TXC_ETC1 || fmtl->txc == ISL_TXC_ETC2)
return true;
} else if (devinfo->is_cherryview) {
const struct isl_format_layout *fmtl = isl_format_get_layout(format);
/* Support for ASTC LDR exists on Cherry View even though big-core
* GPUs didn't get it until Skylake.
*/
if (fmtl->txc == ISL_TXC_ASTC)
return format < ISL_FORMAT_ASTC_HDR_2D_4X4_FLT16;
} else if (gen_device_info_is_9lp(devinfo)) {
const struct isl_format_layout *fmtl = isl_format_get_layout(format);
/* Support for ASTC HDR exists on Broxton even though big-core
* GPUs didn't get it until Cannonlake.
*/
if (fmtl->txc == ISL_TXC_ASTC)
return true;
}
return format_gen(devinfo) >= format_info[format].sampling;
}
bool
isl_format_supports_filtering(const struct gen_device_info *devinfo,
enum isl_format format)
{
if (!format_info_exists(format))
return false;
if (devinfo->is_baytrail) {
const struct isl_format_layout *fmtl = isl_format_get_layout(format);
/* Support for ETC1 and ETC2 exists on Bay Trail even though big-core
* GPUs didn't get it until Broadwell.
*/
if (fmtl->txc == ISL_TXC_ETC1 || fmtl->txc == ISL_TXC_ETC2)
return true;
} else if (devinfo->is_cherryview) {
const struct isl_format_layout *fmtl = isl_format_get_layout(format);
/* Support for ASTC LDR exists on Cherry View even though big-core
* GPUs didn't get it until Skylake.
*/
if (fmtl->txc == ISL_TXC_ASTC)
return format < ISL_FORMAT_ASTC_HDR_2D_4X4_FLT16;
} else if (gen_device_info_is_9lp(devinfo)) {
const struct isl_format_layout *fmtl = isl_format_get_layout(format);
/* Support for ASTC HDR exists on Broxton even though big-core
* GPUs didn't get it until Cannonlake.
*/
if (fmtl->txc == ISL_TXC_ASTC)
return true;
}
return format_gen(devinfo) >= format_info[format].filtering;
}
bool
isl_format_supports_vertex_fetch(const struct gen_device_info *devinfo,
enum isl_format format)
{
if (!format_info_exists(format))
return false;
/* For vertex fetch, Bay Trail supports the same set of formats as Haswell
* but is a superset of Ivy Bridge.
*/
if (devinfo->is_baytrail)
return 75 >= format_info[format].input_vb;
return format_gen(devinfo) >= format_info[format].input_vb;
}
/**
* Returns true if the given format can support typed writes.
*/
bool
isl_format_supports_typed_writes(const struct gen_device_info *devinfo,
enum isl_format format)
{
if (!format_info_exists(format))
return false;
return format_gen(devinfo) >= format_info[format].typed_write;
}
/**
* Returns true if the given format can support typed reads with format
* conversion fully handled by hardware. On Sky Lake, all formats which are
* supported for typed writes also support typed reads but some of them return
* the raw image data and don't provide format conversion.
*
* For anyone looking to find this data in the PRM, the easiest way to find
* format tables is to search for R11G11B10. There are only a few
* occurrences.
*/
bool
isl_format_supports_typed_reads(const struct gen_device_info *devinfo,
enum isl_format format)
{
if (!format_info_exists(format))
return false;
return format_gen(devinfo) >= format_info[format].typed_read;
}
/**
* Returns true if the given format can support single-sample fast clears.
* This function only checks the format. In order to determine if a surface
* supports CCS_E, several other factors need to be considered such as tiling
* and sample count. See isl_surf_get_ccs_surf for details.
*/
bool
isl_format_supports_ccs_d(const struct gen_device_info *devinfo,
enum isl_format format)
{
/* Clear-only compression was first added on Ivy Bridge and was last
* implemented on Ice lake (see BSpec: 43862).
*/
if (devinfo->gen < 7 || devinfo->gen > 11)
return false;
if (!isl_format_supports_rendering(devinfo, format))
return false;
const struct isl_format_layout *fmtl = isl_format_get_layout(format);
return fmtl->bpb == 32 || fmtl->bpb == 64 || fmtl->bpb == 128;
}
/**
* Returns true if the given format can support single-sample color
* compression. This function only checks the format. In order to determine
* if a surface supports CCS_E, several other factors need to be considered
* such as tiling and sample count. See isl_surf_get_ccs_surf for details.
*/
bool
isl_format_supports_ccs_e(const struct gen_device_info *devinfo,
enum isl_format format)
{
if (!format_info_exists(format))
return false;
/* For simplicity, only report that a format supports CCS_E if blorp can
* perform bit-for-bit copies with an image of that format while compressed.
* This allows ISL users to avoid having to resolve the image before
* performing such a copy. We may want to change this behavior in the
* future.
*
* The following formats have no equivalent UINT format. Given how
* blorp_copy currently works, bit-for-bit copy operations are not possible
* without an intermediate resolve.
*/
switch (format) {
case ISL_FORMAT_R11G11B10_FLOAT:
case ISL_FORMAT_B5G5R5X1_UNORM:
case ISL_FORMAT_B5G5R5X1_UNORM_SRGB:
case ISL_FORMAT_B5G5R5A1_UNORM:
case ISL_FORMAT_B5G5R5A1_UNORM_SRGB:
case ISL_FORMAT_A4B4G4R4_UNORM:
case ISL_FORMAT_B4G4R4A4_UNORM:
case ISL_FORMAT_B4G4R4A4_UNORM_SRGB:
case ISL_FORMAT_B5G6R5_UNORM:
case ISL_FORMAT_B5G6R5_UNORM_SRGB:
case ISL_FORMAT_A1B5G5R5_UNORM:
case ISL_FORMAT_A8_UNORM:
return false;
default:
break;
}
return format_gen(devinfo) >= format_info[format].ccs_e;
}
bool
isl_format_supports_multisampling(const struct gen_device_info *devinfo,
enum isl_format format)
{
/* From the Sandybridge PRM, Volume 4 Part 1 p72, SURFACE_STATE, Surface
* Format:
*
* If Number of Multisamples is set to a value other than
* MULTISAMPLECOUNT_1, this field cannot be set to the following
* formats:
*
* - any format with greater than 64 bits per element
* - any compressed texture format (BC*)
* - any YCRCB* format
*
* The restriction on the format's size is removed on Broadwell. Moreover,
* empirically it looks that even IvyBridge can handle multisampled surfaces
* with format sizes all the way to 128-bits (RGBA32F, RGBA32I, RGBA32UI).
*
* Also, there is an exception for HiZ which we treat as a compressed
* format and is allowed to be multisampled on Broadwell and earlier.
*/
if (format == ISL_FORMAT_HIZ) {
/* On SKL+, HiZ is always single-sampled even when the primary surface
* is multisampled. See also isl_surf_get_hiz_surf().
*/
return devinfo->gen <= 8;
} else if (devinfo->gen < 7 && isl_format_get_layout(format)->bpb > 64) {
return false;
} else if (isl_format_is_compressed(format)) {
return false;
} else if (isl_format_is_yuv(format)) {
return false;
} else {
return true;
}
}
/**
* Returns true if the two formats are "CCS_E compatible" meaning that you can
* render in one format with CCS_E enabled and then texture using the other
* format without needing a resolve.
*
* Note: Even if the formats are compatible, special care must be taken if a
* clear color is involved because the encoding of the clear color is heavily
* format-dependent.
*/
bool
isl_formats_are_ccs_e_compatible(const struct gen_device_info *devinfo,
enum isl_format format1,
enum isl_format format2)
{
/* They must support CCS_E */
if (!isl_format_supports_ccs_e(devinfo, format1) ||
!isl_format_supports_ccs_e(devinfo, format2))
return false;
const struct isl_format_layout *fmtl1 = isl_format_get_layout(format1);
const struct isl_format_layout *fmtl2 = isl_format_get_layout(format2);
/* The compression used by CCS is not dependent on the actual data encoding
* of the format but only depends on the bit-layout of the channels.
*/
return fmtl1->channels.r.bits == fmtl2->channels.r.bits &&
fmtl1->channels.g.bits == fmtl2->channels.g.bits &&
fmtl1->channels.b.bits == fmtl2->channels.b.bits &&
fmtl1->channels.a.bits == fmtl2->channels.a.bits;
}
static bool
isl_format_has_channel_type(enum isl_format fmt, enum isl_base_type type)
{
const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
return fmtl->channels.r.type == type ||
fmtl->channels.g.type == type ||
fmtl->channels.b.type == type ||
fmtl->channels.a.type == type ||
fmtl->channels.l.type == type ||
fmtl->channels.i.type == type ||
fmtl->channels.p.type == type;
}
bool
isl_format_has_unorm_channel(enum isl_format fmt)
{
return isl_format_has_channel_type(fmt, ISL_UNORM);
}
bool
isl_format_has_snorm_channel(enum isl_format fmt)
{
return isl_format_has_channel_type(fmt, ISL_SNORM);
}
bool
isl_format_has_ufloat_channel(enum isl_format fmt)
{
return isl_format_has_channel_type(fmt, ISL_UFLOAT);
}
bool
isl_format_has_sfloat_channel(enum isl_format fmt)
{
return isl_format_has_channel_type(fmt, ISL_SFLOAT);
}
bool
isl_format_has_uint_channel(enum isl_format fmt)
{
return isl_format_has_channel_type(fmt, ISL_UINT);
}
bool
isl_format_has_sint_channel(enum isl_format fmt)
{
return isl_format_has_channel_type(fmt, ISL_SINT);
}
bool
isl_format_has_color_component(enum isl_format fmt, int component)
{
const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
const uint8_t intensity = fmtl->channels.i.bits;
const uint8_t luminance = fmtl->channels.l.bits;
switch (component) {
case 0:
return (fmtl->channels.r.bits + intensity + luminance) > 0;
case 1:
return (fmtl->channels.g.bits + intensity + luminance) > 0;
case 2:
return (fmtl->channels.b.bits + intensity + luminance) > 0;
case 3:
return (fmtl->channels.a.bits + intensity) > 0;
default:
assert(!"Invalid color component: must be 0..3");
return false;
}
}
unsigned
isl_format_get_num_channels(enum isl_format fmt)
{
const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
assert(fmtl->channels.p.bits == 0);
return (fmtl->channels.r.bits > 0) +
(fmtl->channels.g.bits > 0) +
(fmtl->channels.b.bits > 0) +
(fmtl->channels.a.bits > 0) +
(fmtl->channels.l.bits > 0) +
(fmtl->channels.i.bits > 0);
}
uint32_t
isl_format_get_depth_format(enum isl_format fmt, bool has_stencil)
{
switch (fmt) {
default:
unreachable("bad isl depth format");
case ISL_FORMAT_R32_FLOAT_X8X24_TYPELESS:
assert(has_stencil);
return 0; /* D32_FLOAT_S8X24_UINT */
case ISL_FORMAT_R32_FLOAT:
assert(!has_stencil);
return 1; /* D32_FLOAT */
case ISL_FORMAT_R24_UNORM_X8_TYPELESS:
if (has_stencil) {
return 2; /* D24_UNORM_S8_UINT */
} else {
return 3; /* D24_UNORM_X8_UINT */
}
case ISL_FORMAT_R16_UNORM:
assert(!has_stencil);
return 5; /* D16_UNORM */
}
}
enum isl_format
isl_format_rgb_to_rgba(enum isl_format rgb)
{
assert(isl_format_is_rgb(rgb));
switch (rgb) {
case ISL_FORMAT_R32G32B32_FLOAT: return ISL_FORMAT_R32G32B32A32_FLOAT;
case ISL_FORMAT_R32G32B32_SINT: return ISL_FORMAT_R32G32B32A32_SINT;
case ISL_FORMAT_R32G32B32_UINT: return ISL_FORMAT_R32G32B32A32_UINT;
case ISL_FORMAT_R32G32B32_UNORM: return ISL_FORMAT_R32G32B32A32_UNORM;
case ISL_FORMAT_R32G32B32_SNORM: return ISL_FORMAT_R32G32B32A32_SNORM;
case ISL_FORMAT_R32G32B32_SSCALED: return ISL_FORMAT_R32G32B32A32_SSCALED;
case ISL_FORMAT_R32G32B32_USCALED: return ISL_FORMAT_R32G32B32A32_USCALED;
case ISL_FORMAT_R32G32B32_SFIXED: return ISL_FORMAT_R32G32B32A32_SFIXED;
case ISL_FORMAT_R8G8B8_UNORM: return ISL_FORMAT_R8G8B8A8_UNORM;
case ISL_FORMAT_R8G8B8_SNORM: return ISL_FORMAT_R8G8B8A8_SNORM;
case ISL_FORMAT_R8G8B8_SSCALED: return ISL_FORMAT_R8G8B8A8_SSCALED;
case ISL_FORMAT_R8G8B8_USCALED: return ISL_FORMAT_R8G8B8A8_USCALED;
case ISL_FORMAT_R16G16B16_FLOAT: return ISL_FORMAT_R16G16B16A16_FLOAT;
case ISL_FORMAT_R16G16B16_UNORM: return ISL_FORMAT_R16G16B16A16_UNORM;
case ISL_FORMAT_R16G16B16_SNORM: return ISL_FORMAT_R16G16B16A16_SNORM;
case ISL_FORMAT_R16G16B16_SSCALED: return ISL_FORMAT_R16G16B16A16_SSCALED;
case ISL_FORMAT_R16G16B16_USCALED: return ISL_FORMAT_R16G16B16A16_USCALED;
case ISL_FORMAT_R8G8B8_UNORM_SRGB: return ISL_FORMAT_R8G8B8A8_UNORM_SRGB;
case ISL_FORMAT_R16G16B16_UINT: return ISL_FORMAT_R16G16B16A16_UINT;
case ISL_FORMAT_R16G16B16_SINT: return ISL_FORMAT_R16G16B16A16_SINT;
case ISL_FORMAT_R8G8B8_UINT: return ISL_FORMAT_R8G8B8A8_UINT;
case ISL_FORMAT_R8G8B8_SINT: return ISL_FORMAT_R8G8B8A8_SINT;
default:
return ISL_FORMAT_UNSUPPORTED;
}
}
enum isl_format
isl_format_rgb_to_rgbx(enum isl_format rgb)
{
assert(isl_format_is_rgb(rgb));
switch (rgb) {
case ISL_FORMAT_R32G32B32_FLOAT:
return ISL_FORMAT_R32G32B32X32_FLOAT;
case ISL_FORMAT_R16G16B16_UNORM:
return ISL_FORMAT_R16G16B16X16_UNORM;
case ISL_FORMAT_R16G16B16_FLOAT:
return ISL_FORMAT_R16G16B16X16_FLOAT;
case ISL_FORMAT_R8G8B8_UNORM:
return ISL_FORMAT_R8G8B8X8_UNORM;
case ISL_FORMAT_R8G8B8_UNORM_SRGB:
return ISL_FORMAT_R8G8B8X8_UNORM_SRGB;
default:
return ISL_FORMAT_UNSUPPORTED;
}
}
enum isl_format
isl_format_rgbx_to_rgba(enum isl_format rgbx)
{
assert(isl_format_is_rgbx(rgbx));
switch (rgbx) {
case ISL_FORMAT_R32G32B32X32_FLOAT:
return ISL_FORMAT_R32G32B32A32_FLOAT;
case ISL_FORMAT_R16G16B16X16_UNORM:
return ISL_FORMAT_R16G16B16A16_UNORM;
case ISL_FORMAT_R16G16B16X16_FLOAT:
return ISL_FORMAT_R16G16B16A16_FLOAT;
case ISL_FORMAT_B8G8R8X8_UNORM:
return ISL_FORMAT_B8G8R8A8_UNORM;
case ISL_FORMAT_B8G8R8X8_UNORM_SRGB:
return ISL_FORMAT_B8G8R8A8_UNORM_SRGB;
case ISL_FORMAT_R8G8B8X8_UNORM:
return ISL_FORMAT_R8G8B8A8_UNORM;
case ISL_FORMAT_R8G8B8X8_UNORM_SRGB:
return ISL_FORMAT_R8G8B8A8_UNORM_SRGB;
case ISL_FORMAT_B10G10R10X2_UNORM:
return ISL_FORMAT_B10G10R10A2_UNORM;
case ISL_FORMAT_B5G5R5X1_UNORM:
return ISL_FORMAT_B5G5R5A1_UNORM;
case ISL_FORMAT_B5G5R5X1_UNORM_SRGB:
return ISL_FORMAT_B5G5R5A1_UNORM_SRGB;
default:
assert(!"Invalid RGBX format");
return rgbx;
}
}
static inline void
pack_channel(const union isl_color_value *value, unsigned i,
const struct isl_channel_layout *layout,
enum isl_colorspace colorspace,
uint32_t data_out[4])
{
if (layout->type == ISL_VOID)
return;
if (colorspace == ISL_COLORSPACE_SRGB)
assert(layout->type == ISL_UNORM);
uint32_t packed;
switch (layout->type) {
case ISL_UNORM:
if (colorspace == ISL_COLORSPACE_SRGB) {
if (layout->bits == 8) {
packed = util_format_linear_float_to_srgb_8unorm(value->f32[i]);
} else {
float srgb = util_format_linear_to_srgb_float(value->f32[i]);
packed = _mesa_float_to_unorm(srgb, layout->bits);
}
} else {
packed = _mesa_float_to_unorm(value->f32[i], layout->bits);
}
break;
case ISL_SNORM:
packed = _mesa_float_to_snorm(value->f32[i], layout->bits);
break;
case ISL_SFLOAT:
assert(layout->bits == 16 || layout->bits == 32);
if (layout->bits == 16) {
packed = _mesa_float_to_half(value->f32[i]);
} else {
packed = value->u32[i];
}
break;
case ISL_UINT:
packed = MIN(value->u32[i], MAX_UINT(layout->bits));
break;
case ISL_SINT:
packed = MIN(MAX(value->u32[i], MIN_INT(layout->bits)),
MAX_INT(layout->bits));
break;
default:
unreachable("Invalid channel type");
}
unsigned dword = layout->start_bit / 32;
unsigned bit = layout->start_bit % 32;
assert(bit + layout->bits <= 32);
data_out[dword] |= (packed & MAX_UINT(layout->bits)) << bit;
}
/**
* Take an isl_color_value and pack it into the actual bits as specified by
* the isl_format. This function is very slow for a format conversion
* function but should be fine for a single pixel worth of data.
*/
void
isl_color_value_pack(const union isl_color_value *value,
enum isl_format format,
uint32_t *data_out)
{
const struct isl_format_layout *fmtl = isl_format_get_layout(format);
assert(fmtl->colorspace == ISL_COLORSPACE_LINEAR ||
fmtl->colorspace == ISL_COLORSPACE_SRGB);
assert(!isl_format_is_compressed(format));
memset(data_out, 0, isl_align(fmtl->bpb, 32) / 8);
if (format == ISL_FORMAT_R9G9B9E5_SHAREDEXP) {
data_out[0] = float3_to_rgb9e5(value->f32);
return;
} else if (format == ISL_FORMAT_R11G11B10_FLOAT) {
data_out[0] = float3_to_r11g11b10f(value->f32);
return;
}
pack_channel(value, 0, &fmtl->channels.r, fmtl->colorspace, data_out);
pack_channel(value, 1, &fmtl->channels.g, fmtl->colorspace, data_out);
pack_channel(value, 2, &fmtl->channels.b, fmtl->colorspace, data_out);
pack_channel(value, 3, &fmtl->channels.a, ISL_COLORSPACE_LINEAR, data_out);
pack_channel(value, 0, &fmtl->channels.l, fmtl->colorspace, data_out);
pack_channel(value, 0, &fmtl->channels.i, ISL_COLORSPACE_LINEAR, data_out);
assert(fmtl->channels.p.bits == 0);
}
/** Extend an N-bit signed integer to 32 bits */
static inline int32_t
sign_extend(int32_t x, unsigned bits)
{
if (bits < 32) {
unsigned shift = 32 - bits;
return (x << shift) >> shift;
} else {
return x;
}
}
static inline void
unpack_channel(union isl_color_value *value,
unsigned start, unsigned count,
const struct isl_channel_layout *layout,
enum isl_colorspace colorspace,
const uint32_t *data_in)
{
if (layout->type == ISL_VOID)
return;
unsigned dword = layout->start_bit / 32;
unsigned bit = layout->start_bit % 32;
assert(bit + layout->bits <= 32);
uint32_t packed = (data_in[dword] >> bit) & MAX_UINT(layout->bits);
union {
uint32_t u32;
float f32;
} unpacked;
if (colorspace == ISL_COLORSPACE_SRGB)
assert(layout->type == ISL_UNORM);
switch (layout->type) {
case ISL_UNORM:
unpacked.f32 = _mesa_unorm_to_float(packed, layout->bits);
if (colorspace == ISL_COLORSPACE_SRGB) {
if (layout->bits == 8) {
unpacked.f32 = util_format_srgb_8unorm_to_linear_float(packed);
} else {
float srgb = _mesa_unorm_to_float(packed, layout->bits);
unpacked.f32 = util_format_srgb_to_linear_float(srgb);
}
} else {
unpacked.f32 = _mesa_unorm_to_float(packed, layout->bits);
}
break;
case ISL_SNORM:
unpacked.f32 = _mesa_snorm_to_float(sign_extend(packed, layout->bits),
layout->bits);
break;
case ISL_SFLOAT:
assert(layout->bits == 16 || layout->bits == 32);
if (layout->bits == 16) {
unpacked.f32 = _mesa_half_to_float(packed);
} else {
unpacked.u32 = packed;
}
break;
case ISL_UINT:
unpacked.u32 = packed;
break;
case ISL_SINT:
unpacked.u32 = sign_extend(packed, layout->bits);
break;
default:
unreachable("Invalid channel type");
}
for (unsigned i = 0; i < count; i++)
value->u32[start + i] = unpacked.u32;
}
/**
* Take unpack an isl_color_value from the actual bits as specified by
* the isl_format. This function is very slow for a format conversion
* function but should be fine for a single pixel worth of data.
*/
void
isl_color_value_unpack(union isl_color_value *value,
enum isl_format format,
const uint32_t data_in[4])
{
const struct isl_format_layout *fmtl = isl_format_get_layout(format);
assert(fmtl->colorspace == ISL_COLORSPACE_LINEAR ||
fmtl->colorspace == ISL_COLORSPACE_SRGB);
assert(!isl_format_is_compressed(format));
/* Default to opaque black. */
memset(value, 0, sizeof(*value));
if (isl_format_has_int_channel(format)) {
value->u32[3] = 1u;
} else {
value->f32[3] = 1.0f;
}
if (format == ISL_FORMAT_R9G9B9E5_SHAREDEXP) {
rgb9e5_to_float3(data_in[0], value->f32);
return;
} else if (format == ISL_FORMAT_R11G11B10_FLOAT) {
r11g11b10f_to_float3(data_in[0], value->f32);
return;
}
unpack_channel(value, 0, 1, &fmtl->channels.r, fmtl->colorspace, data_in);
unpack_channel(value, 1, 1, &fmtl->channels.g, fmtl->colorspace, data_in);
unpack_channel(value, 2, 1, &fmtl->channels.b, fmtl->colorspace, data_in);
unpack_channel(value, 3, 1, &fmtl->channels.a, ISL_COLORSPACE_LINEAR, data_in);
unpack_channel(value, 0, 3, &fmtl->channels.l, fmtl->colorspace, data_in);
unpack_channel(value, 0, 4, &fmtl->channels.i, ISL_COLORSPACE_LINEAR, data_in);
assert(fmtl->channels.p.bits == 0);
}