from u_format_parse import *
+def inv_swizzles(swizzles):
+ '''Return an array[4] of inverse swizzle terms'''
+ '''Only pick the first matching value to avoid l8 getting blue and i8 getting alpha'''
+ inv_swizzle = [None]*4
+ for i in range(4):
+ swizzle = swizzles[i]
+ if swizzle < 4 and inv_swizzle[swizzle] == None:
+ inv_swizzle[swizzle] = i
+ return inv_swizzle
+
+def print_channels(format, func):
+ if format.nr_channels() <= 1:
+ func(format.le_channels, format.le_swizzles)
+ else:
+ print '#ifdef PIPE_ARCH_BIG_ENDIAN'
+ func(format.be_channels, format.be_swizzles)
+ print '#else'
+ func(format.le_channels, format.le_swizzles)
+ print '#endif'
+
def generate_format_type(format):
'''Generate a structure that describes the format.'''
assert format.layout == PLAIN
- print 'union util_format_%s {' % format.short_name()
-
- if format.block_size() in (8, 16, 32, 64):
- print ' uint%u_t value;' % (format.block_size(),)
-
- use_bitfields = False
- for channel in format.channels:
- if channel.size % 8 or not is_pot(channel.size):
- use_bitfields = True
-
- print ' struct {'
- for channel in format.channels:
- if use_bitfields:
+ def generate_bitfields(channels, swizzles):
+ for channel in channels:
if channel.type == VOID:
if channel.size:
print ' unsigned %s:%u;' % (channel.name, channel.size)
print ' unsigned %s:%u;' % (channel.name, channel.size)
else:
assert 0
- else:
+
+ def generate_full_fields(channels, swizzles):
+ for channel in channels:
assert channel.size % 8 == 0 and is_pot(channel.size)
if channel.type == VOID:
if channel.size:
assert 0
else:
assert 0
+
+ print 'union util_format_%s {' % format.short_name()
+
+ if format.block_size() in (8, 16, 32, 64):
+ print ' uint%u_t value;' % (format.block_size(),)
+
+ use_bitfields = False
+ for channel in format.le_channels:
+ if channel.size % 8 or not is_pot(channel.size):
+ use_bitfields = True
+
+ print ' struct {'
+ if use_bitfields:
+ print_channels(format, generate_bitfields)
+ else:
+ print_channels(format, generate_full_fields)
print ' } chan;'
print '};'
print
return False
for i in range(4):
- channel = format.channels[i]
+ channel = format.le_channels[i]
if channel.type not in (VOID, UNSIGNED, SIGNED, FLOAT, FIXED):
return False
if channel.type == FLOAT and channel.size not in (16, 32, 64):
return True
-def is_format_pure_unsigned(format):
- for i in range(4):
- channel = format.channels[i]
- if channel.type not in (VOID, UNSIGNED):
- return False
- if channel.type == UNSIGNED and channel.pure == False:
- return False
-
- return True
-
-
-def is_format_pure_signed(format):
- for i in range(4):
- channel = format.channels[i]
- if channel.type not in (VOID, SIGNED):
- return False
- if channel.type == SIGNED and channel.pure == False:
- return False
-
- return True
-
def native_type(format):
'''Get the native appropriate for a format.'''
return 'uint%u_t' % format.block_size()
else:
# For array pixel formats return the integer type that matches the color channel
- channel = format.channels[0]
+ channel = format.array_element()
if channel.type in (UNSIGNED, VOID):
return 'uint%u_t' % channel.size
elif channel.type in (SIGNED, FIXED):
src_native_type = native_type(format)
- if format.is_bitmask():
+ def unpack_from_bitmask(channels, swizzles):
depth = format.block_size()
print ' uint%u_t value = *(const uint%u_t *)src;' % (depth, depth)
# Declare the intermediate variables
for i in range(format.nr_channels()):
- src_channel = format.channels[i]
+ src_channel = channels[i]
if src_channel.type == UNSIGNED:
print ' uint%u_t %s;' % (depth, src_channel.name)
elif src_channel.type == SIGNED:
# Compute the intermediate unshifted values
for i in range(format.nr_channels()):
- src_channel = format.channels[i]
+ src_channel = channels[i]
value = 'value'
shift = src_channel.shift
if src_channel.type == UNSIGNED:
# Convert, swizzle, and store final values
for i in range(4):
- swizzle = format.swizzles[i]
+ swizzle = swizzles[i]
if swizzle < 4:
- src_channel = format.channels[swizzle]
+ src_channel = channels[swizzle]
src_colorspace = format.colorspace
if src_colorspace == SRGB and i == 3:
# Alpha channel is linear
assert False
print ' dst[%u] = %s; /* %s */' % (i, value, 'rgba'[i])
- else:
+ def unpack_from_union(channels, swizzles):
print ' union util_format_%s pixel;' % format.short_name()
print ' memcpy(&pixel, src, sizeof pixel);'
for i in range(4):
- swizzle = format.swizzles[i]
+ swizzle = swizzles[i]
if swizzle < 4:
- src_channel = format.channels[swizzle]
+ src_channel = channels[swizzle]
src_colorspace = format.colorspace
if src_colorspace == SRGB and i == 3:
# Alpha channel is linear
assert False
print ' dst[%u] = %s; /* %s */' % (i, value, 'rgba'[i])
+ if format.is_bitmask():
+ print_channels(format, unpack_from_bitmask)
+ else:
+ print_channels(format, unpack_from_union)
+
def generate_pack_kernel(format, src_channel, src_native_type):
assert format.layout == PLAIN
- inv_swizzle = format.inv_swizzles()
+ def pack_into_bitmask(channels, swizzles):
+ inv_swizzle = inv_swizzles(swizzles)
- if format.is_bitmask():
depth = format.block_size()
print ' uint%u_t value = 0;' % depth
for i in range(4):
- dst_channel = format.channels[i]
+ dst_channel = channels[i]
shift = dst_channel.shift
if inv_swizzle[i] is not None:
value ='src[%u]' % inv_swizzle[i]
print ' *(uint%u_t *)dst = value;' % depth
- else:
+ def pack_into_union(channels, swizzles):
+ inv_swizzle = inv_swizzles(swizzles)
+
print ' union util_format_%s pixel;' % format.short_name()
for i in range(4):
- dst_channel = format.channels[i]
+ dst_channel = channels[i]
width = dst_channel.size
if inv_swizzle[i] is None:
continue
print ' memcpy(dst, &pixel, sizeof pixel);'
+ if format.is_bitmask():
+ print_channels(format, pack_into_bitmask)
+ else:
+ print_channels(format, pack_into_union)
+
def generate_format_unpack(format, dst_channel, dst_native_type, dst_suffix):
'''Generate the function to unpack pixels from a particular format'''
def is_format_hand_written(format):
- return format.layout in ('s3tc', 'rgtc', 'etc', 'subsampled', 'other') or format.colorspace == ZS
+ return format.layout in ('s3tc', 'rgtc', 'etc', 'bptc', 'subsampled', 'other') or format.colorspace == ZS
def generate(formats):
print '#include "u_half.h"'
print '#include "u_format.h"'
print '#include "u_format_other.h"'
- print '#include "u_format_srgb.h"'
+ print '#include "util/format_srgb.h"'
print '#include "u_format_yuv.h"'
print '#include "u_format_zs.h"'
print
if is_format_supported(format):
generate_format_type(format)
- if is_format_pure_unsigned(format):
+ if format.is_pure_unsigned():
native_type = 'unsigned'
suffix = 'unsigned'
channel = Channel(UNSIGNED, False, True, 32)
suffix = 'signed'
generate_format_unpack(format, channel, native_type, suffix)
generate_format_pack(format, channel, native_type, suffix)
- elif is_format_pure_signed(format):
+ elif format.is_pure_signed():
native_type = 'int'
suffix = 'signed'
channel = Channel(SIGNED, False, True, 32)
projects / mesa.git / blobdiff