/* * 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 #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, x, 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( 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, x, 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, x, B5G6R5_UNORM) SF( Y, Y, x, x, Y, Y, x, x, x, x, x, x, B5G6R5_UNORM_SRGB) SF( Y, Y, x, Y, Y, Y, x, x, x, 70, x, x, B5G5R5A1_UNORM) SF( Y, Y, x, x, Y, Y, x, x, x, x, x, x, B5G5R5A1_UNORM_SRGB) SF( Y, Y, x, Y, Y, Y, x, x, x, 70, x, x, B4G4R4A4_UNORM) SF( Y, Y, x, x, Y, Y, x, x, x, x, x, x, B4G4R4A4_UNORM_SRGB) SF( Y, Y, x, x, Y, Y, Y, x, x, 70, 110, x, R8G8_UNORM) SF( Y, Y, x, Y, Y, 60, Y, x, x, 70, 110, x, R8G8_SNORM) SF( Y, x, x, x, Y, x, Y, x, x, 70, 90, x, R8G8_SINT) SF( Y, x, x, x, Y, x, Y, x, x, 70, 75, x, R8G8_UINT) SF( Y, Y, Y, x, Y, 45, Y, x, 70, 70, 110, x, R16_UNORM) SF( Y, Y, x, x, Y, 60, Y, x, x, 70, 110, x, R16_SNORM) SF( Y, x, x, x, Y, x, Y, x, x, 70, 90, x, R16_SINT) SF( Y, x, x, x, Y, x, Y, x, x, 70, 75, x, R16_UINT) SF( Y, Y, x, x, Y, Y, Y, x, x, 70, 90, x, 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, x, B5G5R5X1_UNORM) SF( x, x, x, x, Y, Y, x, x, x, x, x, x, 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( x, x, x, x, x, x, x, x, x, x, x, x, 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, x, x, x, x, x, x, x, 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, x, R8_UNORM) SF( Y, Y, x, x, Y, 60, Y, x, x, 70, 110, x, R8_SNORM) SF( Y, x, x, x, Y, x, Y, x, x, 70, 90, x, R8_SINT) SF( Y, x, x, x, Y, x, Y, x, x, 70, 75, x, R8_UINT) SF( Y, Y, x, Y, Y, Y, x, x, x, 70, 110, x, 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) SF( 75, 75, 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) { /* Fast clears were first added on Ivy Bridge */ if (devinfo->gen < 7) 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. * * R11G11B10_FLOAT has no equivalent UINT format. Given how blorp_copy * currently works, bit-for-bit copy operations are not possible without an * intermediate resolve. */ if (format == ISL_FORMAT_R11G11B10_FLOAT) return false; 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); } 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); }