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mesa/src/util/format/u_format_table.py
Emma Anholt 2e6810a06a util/format: Add G8_B8R8_420_UNORM to match Vulkan. 
turnip was playing fast and loose with the name, using the R8_G8B8 format
name but actually setting the descriptors up to read G8_B8R8 like Vulkan
(sensibly) wants.  This caused trouble when trying to make freedreno and
turnip share code.  By having both orderings as format names, we can share
the descriptor code and also confuse readers less.

Reviewed-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13443>
2021-11-11 00:10:57 +00:00

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CopyRight = '''
/**************************************************************************
*
* Copyright 2010 VMware, Inc.
* All Rights Reserved.
*
* 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, sub license, 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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.
*
**************************************************************************/
'''
import sys, os
from u_format_parse import *
import u_format_pack
def layout_map(layout):
return 'UTIL_FORMAT_LAYOUT_' + str(layout).upper()
def colorspace_map(colorspace):
return 'UTIL_FORMAT_COLORSPACE_' + str(colorspace).upper()
colorspace_channels_map = {
'rgb': ['r', 'g', 'b', 'a'],
'srgb': ['sr', 'sg', 'sb', 'a'],
'zs': ['z', 's'],
'yuv': ['y', 'u', 'v'],
}
type_map = {
VOID: "UTIL_FORMAT_TYPE_VOID",
UNSIGNED: "UTIL_FORMAT_TYPE_UNSIGNED",
SIGNED: "UTIL_FORMAT_TYPE_SIGNED",
FIXED: "UTIL_FORMAT_TYPE_FIXED",
FLOAT: "UTIL_FORMAT_TYPE_FLOAT",
}
def bool_map(value):
if value:
return "TRUE"
else:
return "FALSE"
swizzle_map = {
SWIZZLE_X: "PIPE_SWIZZLE_X",
SWIZZLE_Y: "PIPE_SWIZZLE_Y",
SWIZZLE_Z: "PIPE_SWIZZLE_Z",
SWIZZLE_W: "PIPE_SWIZZLE_W",
SWIZZLE_0: "PIPE_SWIZZLE_0",
SWIZZLE_1: "PIPE_SWIZZLE_1",
SWIZZLE_NONE: "PIPE_SWIZZLE_NONE",
}
def has_access(format):
# We don't generate code for YUV formats, and many of the new ones lack
# pack/unpack functions for softpipe/llvmpipe.
noaccess_formats = [
'r1_unorm',
'yv12',
'yv16',
'iyuv',
'nv12',
'nv16',
'nv21',
'p010',
'p012',
'p016',
'y210',
'y212',
'y216',
'y410',
'y412',
'y416',
'xyuv',
'ayuv',
'r8g8_r8b8_unorm',
'g8r8_b8r8_unorm',
'g8r8_g8b8_unorm',
'y8_u8_v8_422_unorm',
'y8_u8v8_422_unorm',
'y8_u8_v8_444_unorm',
'y16_u16_v16_420_unorm',
'y16_u16_v16_422_unorm',
'y16_u16v16_422_unorm',
'y16_u16_v16_444_unorm',
'r8_g8b8_420_unorm',
'g8_b8r8_420_unorm',
'g8_b8_r8_420_unorm',
'y8_unorm',
]
if format.short_name() in noaccess_formats:
return False
if format.layout in ('astc', 'atc'):
return False
if format.layout == 'etc' and format.short_name() != 'etc1_rgb8':
return False
return True
def write_format_table_header(file):
print('/* This file is autogenerated by u_format_table.py from u_format.csv. Do not edit directly. */', file=file)
print(file=file)
# This will print the copyright message on the top of this file
print(CopyRight.strip(), file=file)
print(file=file)
print('#include "util/format/u_format.h"', file=file)
def write_format_table(formats):
write_format_table_header(sys.stdout)
print('#include "u_format_bptc.h"')
print('#include "u_format_fxt1.h"')
print('#include "u_format_s3tc.h"')
print('#include "u_format_rgtc.h"')
print('#include "u_format_latc.h"')
print('#include "u_format_etc.h"')
print()
write_format_table_header(sys.stdout2)
u_format_pack.generate(formats)
def do_channel_array(channels, swizzles):
print(" {")
for i in range(4):
channel = channels[i]
if i < 3:
sep = ","
else:
sep = ""
if channel.size:
print(" {%s, %s, %s, %u, %u}%s\t/* %s = %s */" % (type_map[channel.type], bool_map(channel.norm), bool_map(channel.pure), channel.size, channel.shift, sep, "xyzw"[i], channel.name))
else:
print(" {0, 0, 0, 0, 0}%s" % (sep,))
print(" },")
def do_swizzle_array(channels, swizzles):
print(" {")
for i in range(4):
swizzle = swizzles[i]
if i < 3:
sep = ","
else:
sep = ""
try:
comment = colorspace_channels_map[format.colorspace][i]
except (KeyError, IndexError):
comment = 'ignored'
print(" %s%s\t/* %s */" % (swizzle_map[swizzle], sep, comment))
print(" },")
def generate_table_getter(type):
suffix = ""
if type == "unpack_":
suffix = "_generic"
print("const struct util_format_%sdescription *" % type)
print("util_format_%sdescription%s(enum pipe_format format)" % (type, suffix))
print("{")
print(" if (format >= ARRAY_SIZE(util_format_%sdescriptions))" % (type))
print(" return NULL;")
print()
print(" return &util_format_%sdescriptions[format];" % (type))
print("}")
print()
def generate_function_getter(func):
print("util_format_%s_func_ptr" % func)
print("util_format_%s_func(enum pipe_format format)" % (func))
print("{")
print(" if (format >= ARRAY_SIZE(util_format_%s_table))" % (func))
print(" return NULL;")
print()
print(" return util_format_%s_table[format];" % (func))
print("}")
print()
print('static const struct util_format_description')
print('util_format_descriptions[] = {')
for format in formats:
sn = format.short_name()
print(" [%s] = {" % (format.name,))
print(" %s," % (format.name,))
print(" \"%s\"," % (format.name,))
print(" \"%s\"," % (sn,))
print(" {%u, %u, %u, %u},\t/* block */" % (format.block_width, format.block_height, format.block_depth, format.block_size()))
print(" %s," % (layout_map(format.layout),))
print(" %u,\t/* nr_channels */" % (format.nr_channels(),))
print(" %s,\t/* is_array */" % (bool_map(format.is_array()),))
print(" %s,\t/* is_bitmask */" % (bool_map(format.is_bitmask()),))
print(" %s,\t/* is_mixed */" % (bool_map(format.is_mixed()),))
print(" %s,\t/* is_unorm */" % (bool_map(format.is_unorm()),))
print(" %s,\t/* is_snorm */" % (bool_map(format.is_snorm()),))
u_format_pack.print_channels(format, do_channel_array)
u_format_pack.print_channels(format, do_swizzle_array)
print(" %s," % (colorspace_map(format.colorspace),))
print(" },")
print()
print("};")
print()
generate_table_getter("")
print('static const struct util_format_pack_description')
print('util_format_pack_descriptions[] = {')
for format in formats:
sn = format.short_name()
if not has_access(format):
print(" [%s] = { 0 }," % (format.name,))
continue
print(" [%s] = {" % (format.name,))
if format.colorspace != ZS and not format.is_pure_color():
print(" .pack_rgba_8unorm = &util_format_%s_pack_rgba_8unorm," % sn)
print(" .pack_rgba_float = &util_format_%s_pack_rgba_float," % sn)
if format.has_depth():
print(" .pack_z_32unorm = &util_format_%s_pack_z_32unorm," % sn)
print(" .pack_z_float = &util_format_%s_pack_z_float," % sn)
if format.has_stencil():
print(" .pack_s_8uint = &util_format_%s_pack_s_8uint," % sn)
if format.is_pure_unsigned() or format.is_pure_signed():
print(" .pack_rgba_uint = &util_format_%s_pack_unsigned," % sn)
print(" .pack_rgba_sint = &util_format_%s_pack_signed," % sn)
print(" },")
print()
print("};")
print()
generate_table_getter("pack_")
print('static const struct util_format_unpack_description')
print('util_format_unpack_descriptions[] = {')
for format in formats:
sn = format.short_name()
if not has_access(format):
print(" [%s] = { 0 }," % (format.name,))
continue
print(" [%s] = {" % (format.name,))
if format.colorspace != ZS and not format.is_pure_color():
if format.layout == 's3tc' or format.layout == 'rgtc':
print(" .fetch_rgba_8unorm = &util_format_%s_fetch_rgba_8unorm," % sn)
if format.block_width > 1:
print(
" .unpack_rgba_8unorm_rect = &util_format_%s_unpack_rgba_8unorm," % sn)
print(
" .unpack_rgba_rect = &util_format_%s_unpack_rgba_float," % sn)
else:
print(
" .unpack_rgba_8unorm = &util_format_%s_unpack_rgba_8unorm," % sn)
print(" .unpack_rgba = &util_format_%s_unpack_rgba_float," % sn)
if format.has_depth():
print(" .unpack_z_32unorm = &util_format_%s_unpack_z_32unorm," % sn)
print(" .unpack_z_float = &util_format_%s_unpack_z_float," % sn)
if format.has_stencil():
print(" .unpack_s_8uint = &util_format_%s_unpack_s_8uint," % sn)
if format.is_pure_unsigned():
print(" .unpack_rgba = &util_format_%s_unpack_unsigned," % sn)
elif format.is_pure_signed():
print(" .unpack_rgba = &util_format_%s_unpack_signed," % sn)
print(" },")
print("};")
print()
generate_table_getter("unpack_")
print('static const util_format_fetch_rgba_func_ptr util_format_fetch_rgba_table[] = {')
for format in formats:
sn = format.short_name()
if format.colorspace != ZS and has_access(format):
print(" [%s] = &util_format_%s_fetch_rgba," % (format.name, sn))
else:
print(" [%s] = NULL," % format.name)
print("};")
print()
generate_function_getter("fetch_rgba")
def main():
formats = []
sys.stdout2 = open(os.devnull, "w")
for arg in sys.argv[1:]:
if arg == '--header':
sys.stdout2 = sys.stdout
sys.stdout = open(os.devnull, "w")
continue
formats.extend(parse(arg))
write_format_table(formats)
if __name__ == '__main__':
main()
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