CoCalc -- lima

GitHub Repository: PojavLauncherTeam/mesa
Path: blob/21.2-virgl/src/gallium/drivers/lima/lima_format.c
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/*
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 * Copyright (c) 2011-2013 Luc Verhaegen <[email protected]>
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 * Copyright (c) 2018-2019 Lima Project
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the "Software"),
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 * to deal in the Software without restriction, including without limitation
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 * the rights to use, copy, modify, merge, publish, distribute, sub license,
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 * and/or sell copies of the Software, and to permit persons to whom the
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 * Software is furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice (including the
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 * next paragraph) shall be included in all copies or substantial portions
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 * of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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 * DEALINGS IN THE SOFTWARE.
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 *
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 */
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#include <stdint.h>
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#include <stdlib.h>
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#include "util/format/u_format.h"
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#include <util/macros.h>
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#include "lima_format.h"
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#define LIMA_TEXEL_FORMAT_L8           0x09
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#define LIMA_TEXEL_FORMAT_A8           0x0a
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#define LIMA_TEXEL_FORMAT_I8           0x0b
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#define LIMA_TEXEL_FORMAT_BGR_565      0x0e
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#define LIMA_TEXEL_FORMAT_BGRA_5551    0x0f
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#define LIMA_TEXEL_FORMAT_BGRA_4444    0x10
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#define LIMA_TEXEL_FORMAT_L8A8         0x11
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#define LIMA_TEXEL_FORMAT_L16          0x12
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#define LIMA_TEXEL_FORMAT_A16          0x13
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#define LIMA_TEXEL_FORMAT_I16          0x14
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#define LIMA_TEXEL_FORMAT_RGB_888      0x15
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#define LIMA_TEXEL_FORMAT_RGBA_8888    0x16
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#define LIMA_TEXEL_FORMAT_RGBX_8888    0x17
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#define LIMA_TEXEL_FORMAT_ETC1_RGB8    0x20
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#define LIMA_TEXEL_FORMAT_L16_FLOAT    0x22
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#define LIMA_TEXEL_FORMAT_A16_FLOAT    0x23
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#define LIMA_TEXEL_FORMAT_I16_FLOAT    0x24
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#define LIMA_TEXEL_FORMAT_L16A16_FLOAT 0x25
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#define LIMA_TEXEL_FORMAT_R16G16B16A16_FLOAT 0x26
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#define LIMA_TEXEL_FORMAT_R16G16B16_FLOAT 0x2f
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#define LIMA_TEXEL_FORMAT_Z24X8        0x2c
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/* This format is only used for depth/stencil reload */
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#define LIMA_TEXEL_FORMAT_Z24S8_RLD    0x32
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#define LIMA_PIXEL_FORMAT_B5G6R5       0x00
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#define LIMA_PIXEL_FORMAT_B5G5R5A1     0x01
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#define LIMA_PIXEL_FORMAT_B4G4R4A4     0x02
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#define LIMA_PIXEL_FORMAT_B8G8R8A8     0x03
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#define LIMA_PIXEL_FORMAT_B8           0x04
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#define LIMA_PIXEL_FORMAT_G8B8         0x05
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#define LIMA_PIXEL_FORMAT_B16G16R16A16_FLOAT 0x06
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#define LIMA_PIXEL_FORMAT_B16_FLOAT    0x07
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#define LIMA_PIXEL_FORMAT_G16B16_FLOAT 0x08
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#define LIMA_PIXEL_FORMAT_Z16          0x0e
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#define LIMA_PIXEL_FORMAT_Z24S8        0x0f
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struct lima_format {
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   bool present;
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   int format;
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   bool swap_r_b;
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   union {
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      uint32_t channel_layout;
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      uint8_t swizzle[4];
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   };
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};
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#define SWIZ(x,y,z,w) {    \
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        PIPE_SWIZZLE_##x,  \
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        PIPE_SWIZZLE_##y,  \
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        PIPE_SWIZZLE_##z,  \
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        PIPE_SWIZZLE_##w   \
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}
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#define LIMA_TEXEL_FORMAT(pipe, tex, swap, swiz)            \
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   [PIPE_FORMAT_##pipe] = {                                 \
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      .present = true, .format = LIMA_TEXEL_FORMAT_##tex,   \
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      .swap_r_b = swap, .swizzle = swiz                     \
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   }
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#define LIMA_PIXEL_FORMAT(pipe, pix, swap, ch_layout)       \
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   [PIPE_FORMAT_##pipe] = {                                 \
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      .present = true, .format = LIMA_PIXEL_FORMAT_##pix,   \
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      .swap_r_b = swap, .channel_layout = ch_layout         \
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   }
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static const struct lima_format lima_texel_formats[] = {
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   LIMA_TEXEL_FORMAT(R8G8B8A8_UNORM,     RGBA_8888, true,  SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(B8G8R8A8_UNORM,     RGBA_8888, false, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(R8G8B8A8_SRGB,      RGBA_8888, true,  SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(B8G8R8A8_SRGB,      RGBA_8888, false, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(R8G8B8X8_UNORM,     RGBX_8888, true,  SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(B8G8R8X8_UNORM,     RGBX_8888, false, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(B5G6R5_UNORM,       BGR_565,   false, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(B5G5R5A1_UNORM,     BGRA_5551, false, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(B4G4R4A4_UNORM,     BGRA_4444, false, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(Z24_UNORM_S8_UINT,  Z24X8,     false, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(Z24X8_UNORM,        Z24X8,     false, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(Z16_UNORM,          L16,       false, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(L16_UNORM,          L16,       false, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(L8_UNORM,           L8,        false, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(A16_UNORM,          A16,       false, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(A8_UNORM,           A8,        false, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(I16_UNORM,          I16,       false, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(I8_UNORM,           I8,        false, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(L8A8_UNORM,         L8A8,      false, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(ETC1_RGB8,          ETC1_RGB8, false, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(R8_UNORM,           L8,        false, SWIZ(X, 0, 0, 1)),
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   LIMA_TEXEL_FORMAT(R8G8_UNORM,         L8A8,      false, SWIZ(X, W, 0, 1)),
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   LIMA_TEXEL_FORMAT(R16G16B16_FLOAT,    R16G16B16_FLOAT, true, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(R16G16B16A16_FLOAT, R16G16B16A16_FLOAT, true, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(L16_FLOAT,          L16_FLOAT, false, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(A16_FLOAT,          A16_FLOAT, false, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(I16_FLOAT,          I16_FLOAT, false, SWIZ(X, Y, Z, W)),
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   LIMA_TEXEL_FORMAT(L16A16_FLOAT,       L16A16_FLOAT, false, SWIZ(X, Y, Z, W)),
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};
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static const struct lima_format lima_pixel_formats[] = {
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   LIMA_PIXEL_FORMAT(R8G8B8A8_UNORM,     B8G8R8A8, true,  0x8888),
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   LIMA_PIXEL_FORMAT(B8G8R8A8_UNORM,     B8G8R8A8, false, 0x8888),
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   LIMA_PIXEL_FORMAT(R8G8B8A8_SRGB,      B8G8R8A8, true,  0x8888),
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   LIMA_PIXEL_FORMAT(B8G8R8A8_SRGB,      B8G8R8A8, false, 0x8888),
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   LIMA_PIXEL_FORMAT(R8G8B8X8_UNORM,     B8G8R8A8, true,  0x8888),
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   LIMA_PIXEL_FORMAT(B8G8R8X8_UNORM,     B8G8R8A8, false, 0x8888),
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   LIMA_PIXEL_FORMAT(B5G6R5_UNORM,       B5G6R5,   false, 0x8565),
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   LIMA_PIXEL_FORMAT(B5G5R5A1_UNORM,     B5G5R5A1, false, 0x8565),
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   LIMA_PIXEL_FORMAT(B4G4R4A4_UNORM,     B4G4R4A4, false, 0x8444),
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   LIMA_PIXEL_FORMAT(R8_UNORM,           B8,       true,  0x8888),
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   LIMA_PIXEL_FORMAT(R8G8_UNORM,         G8B8,     true,  0x8888),
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   LIMA_PIXEL_FORMAT(Z16_UNORM,          Z16,      false, 0x0000),
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   LIMA_PIXEL_FORMAT(Z24_UNORM_S8_UINT,  Z24S8,    false, 0x0000),
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   LIMA_PIXEL_FORMAT(Z24X8_UNORM,        Z24S8,    false, 0x0000),
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   LIMA_PIXEL_FORMAT(R16G16B16A16_FLOAT, B16G16R16A16_FLOAT, true, 0x0000),
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   LIMA_PIXEL_FORMAT(R16_FLOAT,          B16_FLOAT, true, 0x0000),
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   LIMA_PIXEL_FORMAT(R16G16_FLOAT,       G16B16_FLOAT, true, 0x0000),
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};
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static const struct lima_format *
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get_texel_format(enum pipe_format f)
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{
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   if (f >= ARRAY_SIZE(lima_texel_formats) ||
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       !lima_texel_formats[f].present)
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      return NULL;
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   return lima_texel_formats + f;
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}
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static const struct lima_format *
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get_pixel_format(enum pipe_format f)
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{
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   if (f >= ARRAY_SIZE(lima_pixel_formats) ||
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       !lima_pixel_formats[f].present)
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      return NULL;
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   return lima_pixel_formats + f;
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}
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bool
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lima_format_texel_supported(enum pipe_format f)
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{
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   const struct lima_format *lf = get_texel_format(f);
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   if (!lf)
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      return false;
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   return true;
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}
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bool
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lima_format_pixel_supported(enum pipe_format f)
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{
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   const struct lima_format *lf = get_pixel_format(f);
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   if (!lf)
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      return false;
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   return true;
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}
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int
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lima_format_get_texel(enum pipe_format f)
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{
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   return lima_texel_formats[f].format;
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}
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int
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lima_format_get_texel_reload(enum pipe_format f)
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{
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   switch (f) {
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   case PIPE_FORMAT_Z24_UNORM_S8_UINT:
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   case PIPE_FORMAT_Z24X8_UNORM:
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      return LIMA_TEXEL_FORMAT_Z24S8_RLD;
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   default:
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      return lima_format_get_texel(f);
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   }
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}
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int
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lima_format_get_pixel(enum pipe_format f)
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{
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   return lima_pixel_formats[f].format;
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}
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bool
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lima_format_get_texel_swap_rb(enum pipe_format f)
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{
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   return lima_texel_formats[f].swap_r_b;
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}
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bool
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lima_format_get_pixel_swap_rb(enum pipe_format f)
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{
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   return lima_pixel_formats[f].swap_r_b;
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}
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const uint8_t *
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lima_format_get_texel_swizzle(enum pipe_format f)
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{
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   return lima_texel_formats[f].swizzle;
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}
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uint32_t
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lima_format_get_channel_layout(enum pipe_format f)
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{
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   return lima_pixel_formats[f].channel_layout;
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}
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