'''
/**************************************************************************
*
- * Copyright 2009 VMware, Inc.
+ * Copyright 2009-2010 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
'''
-import sys
-
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.'''
- print 'union util_format_%s {' % format.short_name()
- if format.is_bitmask():
- print ' uint%u_t value;' % (format.block_size(),)
- print ' struct {'
- for channel in format.channels:
- if format.is_bitmask() and not format.is_array():
+ assert format.layout == PLAIN
+
+ def generate_bitfields(channels, swizzles):
+ for channel in channels:
if channel.type == VOID:
if channel.size:
print ' unsigned %s:%u;' % (channel.name, channel.size)
elif channel.type == UNSIGNED:
print ' unsigned %s:%u;' % (channel.name, channel.size)
- elif channel.type == SIGNED:
+ elif channel.type in (SIGNED, FIXED):
print ' int %s:%u;' % (channel.name, channel.size)
+ elif channel.type == FLOAT:
+ if channel.size == 64:
+ print ' double %s;' % (channel.name)
+ elif channel.size == 32:
+ print ' float %s;' % (channel.name)
+ else:
+ 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 ' } chan;'
- print '};'
- print
+ 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(),)
-def bswap_format(format):
- '''Generate a structure that describes the format.'''
+ use_bitfields = False
+ for channel in format.le_channels:
+ if channel.size % 8 or not is_pot(channel.size):
+ use_bitfields = True
- if format.is_bitmask() and not format.is_array():
- print '#ifdef PIPE_ARCH_BIG_ENDIAN'
- print ' pixel.value = util_bswap%u(pixel.value);' % format.block_size()
- print '#endif'
+ print ' struct {'
+ if use_bitfields:
+ print_channels(format, generate_bitfields)
+ else:
+ print_channels(format, generate_full_fields)
+ print ' } chan;'
+ print '};'
+ print
def is_format_supported(format):
return False
for i in range(4):
- channel = format.channels[i]
- if channel.type not in (VOID, UNSIGNED, SIGNED, FLOAT):
+ 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 False
-
- # We can only read a color from a depth/stencil format if the depth channel is present
- if format.colorspace == 'zs' and format.swizzles[0] == SWIZZLE_NONE:
- return False
return True
-
def native_type(format):
'''Get the native appropriate for a format.'''
+ if format.name == 'PIPE_FORMAT_R11G11B10_FLOAT':
+ return 'uint32_t'
+ if format.name == 'PIPE_FORMAT_R9G9B9E5_FLOAT':
+ return 'uint32_t'
+
if format.layout == PLAIN:
if not format.is_array():
# For arithmetic pixel formats return the integer type that matches the whole pixel
return 'uint%u_t' % format.block_size()
else:
# For array pixel formats return the integer type that matches the color channel
- type = format.channels[0]
- if type.type == UNSIGNED:
- return 'uint%u_t' % type.size
- elif type.type == SIGNED:
- return 'int%u_t' % type.size
- elif type.type == FLOAT:
- if type.size == 32:
+ channel = format.array_element()
+ if channel.type in (UNSIGNED, VOID):
+ return 'uint%u_t' % channel.size
+ elif channel.type in (SIGNED, FIXED):
+ return 'int%u_t' % channel.size
+ elif channel.type == FLOAT:
+ if channel.size == 16:
+ return 'uint16_t'
+ elif channel.size == 32:
return 'float'
- elif type.size == 64:
+ elif channel.size == 64:
return 'double'
else:
assert False
assert False
-def get_one(type):
+def truncate_mantissa(x, bits):
+ '''Truncate an integer so it can be represented exactly with a floating
+ point mantissa'''
+
+ assert isinstance(x, (int, long))
+
+ s = 1
+ if x < 0:
+ s = -1
+ x = -x
+
+ # We can represent integers up to mantissa + 1 bits exactly
+ mask = (1 << (bits + 1)) - 1
+
+ # Slide the mask until the MSB matches
+ shift = 0
+ while (x >> shift) & ~mask:
+ shift += 1
+
+ x &= mask << shift
+ x *= s
+ return x
+
+
+def value_to_native(type, value):
'''Get the value of unity for this type.'''
- if type.type == 'FLOAT' or not type.norm:
- return 1
+ if type.type == FLOAT:
+ if type.size <= 32 \
+ and isinstance(value, (int, long)):
+ return truncate_mantissa(value, 23)
+ return value
+ if type.type == FIXED:
+ return int(value * (1 << (type.size/2)))
+ if not type.norm:
+ return int(value)
+ if type.type == UNSIGNED:
+ return int(value * ((1 << type.size) - 1))
+ if type.type == SIGNED:
+ return int(value * ((1 << (type.size - 1)) - 1))
+ assert False
+
+
+def native_to_constant(type, value):
+ '''Get the value of unity for this type.'''
+ if type.type == FLOAT:
+ if type.size <= 32:
+ return "%.1ff" % float(value)
+ else:
+ return "%.1f" % float(value)
else:
- return (1 << get_one_shift(type)) - 1
-
-
-def generate_clamp():
- '''Code generate the clamping functions for each type.
-
- We don't use a macro so that arguments with side effects,
- like *src_pixel++ are correctly handled.
- '''
-
- for suffix, native_type in [
- ('', 'double'),
- ('f', 'float'),
- ('ui', 'unsigned int'),
- ('si', 'int'),
- ]:
- print 'static INLINE %s' % native_type
- print 'clamp%s(%s value, %s lbound, %s ubound)' % (suffix, native_type, native_type, native_type)
- print '{'
- print ' if(value < lbound)'
- print ' return lbound;'
- print ' if(value > ubound)'
- print ' return ubound;'
- print ' return value;'
- print '}'
- print
+ return str(int(value))
+
+
+def get_one(type):
+ '''Get the value of unity for this type.'''
+ return value_to_native(type, 1)
def clamp_expr(src_channel, dst_channel, dst_native_type, value):
if src_channel == dst_channel:
return value
- # Pick the approriate clamp function
- if src_channel.type == FLOAT:
- if src_channel.size == 32:
- func = 'clampf'
- elif src_channel.size == 64:
- func = 'clamp'
- else:
- assert False
- elif src_channel.type == UNSIGNED:
- func = 'clampui'
- elif src_channel.type == SIGNED:
- func = 'clampsi'
- else:
- assert False
-
src_min = src_channel.min()
src_max = src_channel.max()
dst_min = dst_channel.min()
dst_max = dst_channel.max()
+
+ # Translate the destination range to the src native value
+ dst_min_native = native_to_constant(src_channel, value_to_native(src_channel, dst_min))
+ dst_max_native = native_to_constant(src_channel, value_to_native(src_channel, dst_max))
if src_min < dst_min and src_max > dst_max:
- return 'CLAMP(%s, %s, %s)' % (value, dst_min, dst_max)
+ return 'CLAMP(%s, %s, %s)' % (value, dst_min_native, dst_max_native)
if src_max > dst_max:
- return 'MIN2(%s, %s)' % (value, dst_max)
+ return 'MIN2(%s, %s)' % (value, dst_max_native)
if src_min < dst_min:
- return 'MAX2(%s, %s)' % (value, dst_min)
+ return 'MAX2(%s, %s)' % (value, dst_min_native)
return value
-def conversion_expr(src_channel, dst_channel, dst_native_type, value, clamp=True):
+def conversion_expr(src_channel,
+ dst_channel, dst_native_type,
+ value,
+ clamp=True,
+ src_colorspace = RGB,
+ dst_colorspace = RGB):
'''Generate the expression to convert a value between two types.'''
+ if src_colorspace != dst_colorspace:
+ if src_colorspace == SRGB:
+ assert src_channel.type == UNSIGNED
+ assert src_channel.norm
+ assert src_channel.size <= 8
+ assert src_channel.size >= 4
+ assert dst_colorspace == RGB
+ if src_channel.size < 8:
+ value = '%s << %x | %s >> %x' % (value, 8 - src_channel.size, value, 2 * src_channel.size - 8)
+ if dst_channel.type == FLOAT:
+ return 'util_format_srgb_8unorm_to_linear_float(%s)' % value
+ else:
+ assert dst_channel.type == UNSIGNED
+ assert dst_channel.norm
+ assert dst_channel.size == 8
+ return 'util_format_srgb_to_linear_8unorm(%s)' % value
+ elif dst_colorspace == SRGB:
+ assert dst_channel.type == UNSIGNED
+ assert dst_channel.norm
+ assert dst_channel.size <= 8
+ assert src_colorspace == RGB
+ if src_channel.type == FLOAT:
+ value = 'util_format_linear_float_to_srgb_8unorm(%s)' % value
+ else:
+ assert src_channel.type == UNSIGNED
+ assert src_channel.norm
+ assert src_channel.size == 8
+ value = 'util_format_linear_to_srgb_8unorm(%s)' % value
+ # XXX rounding is all wrong.
+ if dst_channel.size < 8:
+ return '%s >> %x' % (value, 8 - dst_channel.size)
+ else:
+ return value
+ elif src_colorspace == ZS:
+ pass
+ elif dst_colorspace == ZS:
+ pass
+ else:
+ assert 0
+
if src_channel == dst_channel:
return value
- if src_channel.type == FLOAT and dst_channel.type == FLOAT:
- return '(%s)%s' % (dst_native_type, value)
-
- if clamp:
- value = clamp_expr(src_channel, dst_channel, dst_native_type, value)
+ src_type = src_channel.type
+ src_size = src_channel.size
+ src_norm = src_channel.norm
+ src_pure = src_channel.pure
- if dst_channel.type == FLOAT:
- if src_channel.norm:
- one = get_one(src_channel)
- if src_channel.size <= 23:
- scale = '(1.0f/0x%x)' % one
- else:
- # bigger than single precision mantissa, use double
- scale = '(1.0/0x%x)' % one
- value = '(%s * %s)' % (value, scale)
- return '(%s)%s' % (dst_native_type, value)
+ # Promote half to float
+ if src_type == FLOAT and src_size == 16:
+ value = 'util_half_to_float(%s)' % value
+ src_size = 32
- if src_channel.type == FLOAT:
- if dst_channel.norm:
- dst_one = get_one(dst_channel)
- if dst_channel.size <= 23:
- scale = '0x%x' % dst_one
- else:
- # bigger than single precision mantissa, use double
- scale = '(double)0x%x' % dst_one
- value = '(%s * %s)' % (value, scale)
- return '(%s)%s' % (dst_native_type, value)
+ # Special case for float <-> ubytes for more accurate results
+ # Done before clamping since these functions already take care of that
+ if src_type == UNSIGNED and src_norm and src_size == 8 and dst_channel.type == FLOAT and dst_channel.size == 32:
+ return 'ubyte_to_float(%s)' % value
+ if src_type == FLOAT and src_size == 32 and dst_channel.type == UNSIGNED and dst_channel.norm and dst_channel.size == 8:
+ return 'float_to_ubyte(%s)' % value
- if src_channel.type in (SIGNED, UNSIGNED) and dst_channel.type in (SIGNED, UNSIGNED):
- if not src_channel.norm and not dst_channel.norm:
+ if clamp:
+ if dst_channel.type != FLOAT or src_type != FLOAT:
+ value = clamp_expr(src_channel, dst_channel, dst_native_type, value)
+
+ if src_type in (SIGNED, UNSIGNED) and dst_channel.type in (SIGNED, UNSIGNED):
+ if not src_norm and not dst_channel.norm:
# neither is normalized -- just cast
return '(%s)%s' % (dst_native_type, value)
src_one = get_one(src_channel)
dst_one = get_one(dst_channel)
- if src_one > dst_one and src_channel.norm and dst_channel.norm:
+ if src_one > dst_one and src_norm and dst_channel.norm:
# We can just bitshift
src_shift = get_one_shift(src_channel)
dst_shift = get_one_shift(dst_channel)
value = '(%s >> %s)' % (value, src_shift - dst_shift)
else:
# We need to rescale using an intermediate type big enough to hold the multiplication of both
- tmp_native_type = intermediate_native_type(src_channel.size + dst_channel.size, src_channel.sign and dst_channel.sign)
+ tmp_native_type = intermediate_native_type(src_size + dst_channel.size, src_channel.sign and dst_channel.sign)
value = '((%s)%s)' % (tmp_native_type, value)
value = '(%s * 0x%x / 0x%x)' % (value, dst_one, src_one)
value = '(%s)%s' % (dst_native_type, value)
return value
- assert False
+ # Promote to either float or double
+ if src_type != FLOAT:
+ if src_norm or src_type == FIXED:
+ one = get_one(src_channel)
+ if src_size <= 23:
+ value = '(%s * (1.0f/0x%x))' % (value, one)
+ if dst_channel.size <= 32:
+ value = '(float)%s' % value
+ src_size = 32
+ else:
+ # bigger than single precision mantissa, use double
+ value = '(%s * (1.0/0x%x))' % (value, one)
+ src_size = 64
+ src_norm = False
+ else:
+ if src_size <= 23 or dst_channel.size <= 32:
+ value = '(float)%s' % value
+ src_size = 32
+ else:
+ # bigger than single precision mantissa, use double
+ value = '(double)%s' % value
+ src_size = 64
+ src_type = FLOAT
+ # Convert double or float to non-float
+ if dst_channel.type != FLOAT:
+ if dst_channel.norm or dst_channel.type == FIXED:
+ dst_one = get_one(dst_channel)
+ if dst_channel.size <= 23:
+ value = 'util_iround(%s * 0x%x)' % (value, dst_one)
+ else:
+ # bigger than single precision mantissa, use double
+ value = '(%s * (double)0x%x)' % (value, dst_one)
+ value = '(%s)%s' % (dst_native_type, value)
+ else:
+ # Cast double to float when converting to either half or float
+ if dst_channel.size <= 32 and src_size > 32:
+ value = '(float)%s' % value
+ src_size = 32
-def generate_format_unpack(format, dst_channel, dst_native_type, dst_suffix):
- '''Generate the function to unpack pixels from a particular format'''
+ if dst_channel.size == 16:
+ value = 'util_float_to_half(%s)' % value
+ elif dst_channel.size == 64 and src_size < 64:
+ value = '(double)%s' % value
- name = format.short_name()
+ return value
- src_native_type = native_type(format)
- print 'static INLINE void'
- print 'util_format_%s_unpack_%s(%s *dst, const void *src)' % (name, dst_suffix, dst_native_type)
- print '{'
- print ' union util_format_%s pixel;' % format.short_name()
- print ' memcpy(&pixel, src, sizeof pixel);'
- bswap_format(format)
+def generate_unpack_kernel(format, dst_channel, dst_native_type):
+ if not is_format_supported(format):
+ return
+
assert format.layout == PLAIN
- for i in range(4):
- swizzle = format.swizzles[i]
- if swizzle < 4:
- src_channel = format.channels[swizzle]
- value = 'pixel.chan.%s' % src_channel.name
- value = conversion_expr(src_channel, dst_channel, dst_native_type, value)
- elif swizzle == SWIZZLE_0:
- value = '0'
- elif swizzle == SWIZZLE_1:
- value = get_one(dst_channel)
- elif swizzle == SWIZZLE_NONE:
- value = '0'
- else:
- assert False
- if format.colorspace == ZS:
- if i == 3:
- value = get_one(dst_channel)
- elif i >= 1:
- value = 'dst[0]'
- print ' dst[%u] = %s; /* %s */' % (i, value, 'rgba'[i])
+ src_native_type = native_type(format)
- print '}'
- print
+ 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 = channels[i]
+ if src_channel.type == UNSIGNED:
+ print ' uint%u_t %s;' % (depth, src_channel.name)
+ elif src_channel.type == SIGNED:
+ print ' int%u_t %s;' % (depth, src_channel.name)
+
+ # Compute the intermediate unshifted values
+ for i in range(format.nr_channels()):
+ src_channel = channels[i]
+ value = 'value'
+ shift = src_channel.shift
+ if src_channel.type == UNSIGNED:
+ if shift:
+ value = '%s >> %u' % (value, shift)
+ if shift + src_channel.size < depth:
+ value = '(%s) & 0x%x' % (value, (1 << src_channel.size) - 1)
+ elif src_channel.type == SIGNED:
+ if shift + src_channel.size < depth:
+ # Align the sign bit
+ lshift = depth - (shift + src_channel.size)
+ value = '%s << %u' % (value, lshift)
+ # Cast to signed
+ value = '(int%u_t)(%s) ' % (depth, value)
+ if src_channel.size < depth:
+ # Align the LSB bit
+ rshift = depth - src_channel.size
+ value = '(%s) >> %u' % (value, rshift)
+ else:
+ value = None
+
+ if value is not None:
+ print ' %s = %s;' % (src_channel.name, value)
+
+ # Convert, swizzle, and store final values
+ for i in range(4):
+ swizzle = swizzles[i]
+ if swizzle < 4:
+ src_channel = channels[swizzle]
+ src_colorspace = format.colorspace
+ if src_colorspace == SRGB and i == 3:
+ # Alpha channel is linear
+ src_colorspace = RGB
+ value = src_channel.name
+ value = conversion_expr(src_channel,
+ dst_channel, dst_native_type,
+ value,
+ src_colorspace = src_colorspace)
+ elif swizzle == SWIZZLE_0:
+ value = '0'
+ elif swizzle == SWIZZLE_1:
+ value = get_one(dst_channel)
+ elif swizzle == SWIZZLE_NONE:
+ value = '0'
+ else:
+ assert False
+ print ' dst[%u] = %s; /* %s */' % (i, value, 'rgba'[i])
+
+ 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 = swizzles[i]
+ if swizzle < 4:
+ src_channel = channels[swizzle]
+ src_colorspace = format.colorspace
+ if src_colorspace == SRGB and i == 3:
+ # Alpha channel is linear
+ src_colorspace = RGB
+ value = 'pixel.chan.%s' % src_channel.name
+ value = conversion_expr(src_channel,
+ dst_channel, dst_native_type,
+ value,
+ src_colorspace = src_colorspace)
+ elif swizzle == SWIZZLE_0:
+ value = '0'
+ elif swizzle == SWIZZLE_1:
+ value = get_one(dst_channel)
+ elif swizzle == SWIZZLE_NONE:
+ value = '0'
+ else:
+ 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_format_pack(format, src_channel, src_native_type, src_suffix):
- '''Generate the function to pack pixels to a particular format'''
- name = format.short_name()
+def generate_pack_kernel(format, src_channel, src_native_type):
+ if not is_format_supported(format):
+ return
+
dst_native_type = native_type(format)
- print 'static INLINE void'
- print 'util_format_%s_pack_%s(void *dst, %s r, %s g, %s b, %s a)' % (name, src_suffix, src_native_type, src_native_type, src_native_type, src_native_type)
- print '{'
- print ' union util_format_%s pixel;' % format.short_name()
-
assert format.layout == PLAIN
- inv_swizzle = format.inv_swizzles()
+ def pack_into_bitmask(channels, swizzles):
+ inv_swizzle = inv_swizzles(swizzles)
+
+ depth = format.block_size()
+ print ' uint%u_t value = 0;' % depth
+
+ for i in range(4):
+ dst_channel = channels[i]
+ shift = dst_channel.shift
+ if inv_swizzle[i] is not None:
+ value ='src[%u]' % inv_swizzle[i]
+ dst_colorspace = format.colorspace
+ if dst_colorspace == SRGB and inv_swizzle[i] == 3:
+ # Alpha channel is linear
+ dst_colorspace = RGB
+ value = conversion_expr(src_channel,
+ dst_channel, dst_native_type,
+ value,
+ dst_colorspace = dst_colorspace)
+ if dst_channel.type in (UNSIGNED, SIGNED):
+ if shift + dst_channel.size < depth:
+ value = '(%s) & 0x%x' % (value, (1 << dst_channel.size) - 1)
+ if shift:
+ value = '(%s) << %u' % (value, shift)
+ if dst_channel.type == SIGNED:
+ # Cast to unsigned
+ value = '(uint%u_t)(%s) ' % (depth, value)
+ else:
+ value = None
+ if value is not None:
+ print ' value |= %s;' % (value)
+
+ print ' *(uint%u_t *)dst = value;' % depth
- for i in range(4):
- dst_channel = format.channels[i]
- width = dst_channel.size
- if inv_swizzle[i] is None:
- continue
- value = 'rgba'[inv_swizzle[i]]
- value = conversion_expr(src_channel, dst_channel, dst_native_type, value)
- if format.colorspace == ZS:
- if i == 3:
- value = get_one(dst_channel)
- elif i >= 1:
- value = '0'
- print ' pixel.chan.%s = %s;' % (dst_channel.name, value)
+ 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 = channels[i]
+ width = dst_channel.size
+ if inv_swizzle[i] is None:
+ continue
+ dst_colorspace = format.colorspace
+ if dst_colorspace == SRGB and inv_swizzle[i] == 3:
+ # Alpha channel is linear
+ dst_colorspace = RGB
+ value ='src[%u]' % inv_swizzle[i]
+ value = conversion_expr(src_channel,
+ dst_channel, dst_native_type,
+ value,
+ dst_colorspace = dst_colorspace)
+ print ' pixel.chan.%s = %s;' % (dst_channel.name, value)
+
+ 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'''
+
+ name = format.short_name()
+
+ print 'static inline void'
+ print 'util_format_%s_unpack_%s(%s *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)' % (name, dst_suffix, dst_native_type)
+ print '{'
+
+ if is_format_supported(format):
+ print ' unsigned x, y;'
+ print ' for(y = 0; y < height; y += %u) {' % (format.block_height,)
+ print ' %s *dst = dst_row;' % (dst_native_type)
+ print ' const uint8_t *src = src_row;'
+ print ' for(x = 0; x < width; x += %u) {' % (format.block_width,)
+
+ generate_unpack_kernel(format, dst_channel, dst_native_type)
+
+ print ' src += %u;' % (format.block_size() / 8,)
+ print ' dst += 4;'
+ print ' }'
+ print ' src_row += src_stride;'
+ print ' dst_row += dst_stride/sizeof(*dst_row);'
+ print ' }'
- bswap_format(format)
- print ' memcpy(dst, &pixel, sizeof pixel);'
print '}'
print
-def generate_unpack(formats, dst_channel, dst_native_type, dst_suffix):
- '''Generate the dispatch function to unpack pixels from any format'''
+def generate_format_pack(format, src_channel, src_native_type, src_suffix):
+ '''Generate the function to pack pixels to a particular format'''
- for format in formats:
- if is_format_supported(format):
- generate_format_unpack(format, dst_channel, dst_native_type, dst_suffix)
+ name = format.short_name()
- print 'static INLINE void'
- print 'util_format_unpack_%s(enum pipe_format format, %s *dst, const void *src)' % (dst_suffix, dst_native_type)
+ print 'static inline void'
+ print 'util_format_%s_pack_%s(uint8_t *dst_row, unsigned dst_stride, const %s *src_row, unsigned src_stride, unsigned width, unsigned height)' % (name, src_suffix, src_native_type)
print '{'
- print ' void (*func)(%s *dst, const void *src);' % dst_native_type
- print ' switch(format) {'
- for format in formats:
- if is_format_supported(format):
- print ' case %s:' % format.name
- print ' func = &util_format_%s_unpack_%s;' % (format.short_name(), dst_suffix)
- print ' break;'
- print ' default:'
- print ' debug_printf("unsupported format\\n");'
- print ' return;'
- print ' }'
- print ' func(dst, src);'
+
+ if is_format_supported(format):
+ print ' unsigned x, y;'
+ print ' for(y = 0; y < height; y += %u) {' % (format.block_height,)
+ print ' const %s *src = src_row;' % (src_native_type)
+ print ' uint8_t *dst = dst_row;'
+ print ' for(x = 0; x < width; x += %u) {' % (format.block_width,)
+
+ generate_pack_kernel(format, src_channel, src_native_type)
+
+ print ' src += 4;'
+ print ' dst += %u;' % (format.block_size() / 8,)
+ print ' }'
+ print ' dst_row += dst_stride;'
+ print ' src_row += src_stride/sizeof(*src_row);'
+ print ' }'
+
print '}'
print
+
+def generate_format_fetch(format, dst_channel, dst_native_type, dst_suffix):
+ '''Generate the function to unpack pixels from a particular format'''
-def generate_pack(formats, src_channel, src_native_type, src_suffix):
- '''Generate the dispatch function to pack pixels to any format'''
-
- for format in formats:
- if is_format_supported(format):
- generate_format_pack(format, src_channel, src_native_type, src_suffix)
+ name = format.short_name()
- print 'static INLINE void'
- print 'util_format_pack_%s(enum pipe_format format, void *dst, %s r, %s g, %s b, %s a)' % (src_suffix, src_native_type, src_native_type, src_native_type, src_native_type)
+ print 'static inline void'
+ print 'util_format_%s_fetch_%s(%s *dst, const uint8_t *src, unsigned i, unsigned j)' % (name, dst_suffix, dst_native_type)
print '{'
- print ' void (*func)(void *dst, %s r, %s g, %s b, %s a);' % (src_native_type, src_native_type, src_native_type, src_native_type)
- print ' switch(format) {'
- for format in formats:
- if is_format_supported(format):
- print ' case %s:' % format.name
- print ' func = &util_format_%s_pack_%s;' % (format.short_name(), src_suffix)
- print ' break;'
- print ' default:'
- print ' debug_printf("%s: unsupported format\\n", __FUNCTION__);'
- print ' return;'
- print ' }'
- print ' func(dst, r, g, b, a);'
+
+ if is_format_supported(format):
+ generate_unpack_kernel(format, dst_channel, dst_native_type)
+
print '}'
print
-def main():
- formats = []
- for arg in sys.argv[1:]:
- formats.extend(parse(arg))
+def is_format_hand_written(format):
+ return format.layout in ('s3tc', 'rgtc', 'etc', 'bptc', 'astc', 'subsampled', 'other') or format.colorspace == ZS
- print '/* This file is autogenerated by u_format_pack.py from u_format.csv. Do not edit directly. */'
- print
- # This will print the copyright message on the top of this file
- print __doc__.strip()
- print
- print '#ifndef U_FORMAT_PACK_H'
- print '#define U_FORMAT_PACK_H'
+def generate(formats):
print
print '#include "pipe/p_compiler.h"'
print '#include "u_math.h"'
+ print '#include "u_half.h"'
print '#include "u_format.h"'
+ print '#include "u_format_other.h"'
+ print '#include "util/format_srgb.h"'
+ print '#include "u_format_yuv.h"'
+ print '#include "u_format_zs.h"'
print
- generate_clamp()
-
for format in formats:
- if format.layout == PLAIN:
- generate_format_type(format)
-
- channel = Channel(FLOAT, False, 32)
- native_type = 'float'
- suffix = '4f'
-
- generate_unpack(formats, channel, native_type, suffix)
- generate_pack(formats, channel, native_type, suffix)
-
- channel = Channel(UNSIGNED, True, 8)
- native_type = 'uint8_t'
- suffix = '4ub'
+ if not is_format_hand_written(format):
+
+ if is_format_supported(format):
+ generate_format_type(format)
+
+ if format.is_pure_unsigned():
+ native_type = 'unsigned'
+ suffix = 'unsigned'
+ channel = Channel(UNSIGNED, False, True, 32)
+
+ generate_format_unpack(format, channel, native_type, suffix)
+ generate_format_pack(format, channel, native_type, suffix)
+ generate_format_fetch(format, channel, native_type, suffix)
+
+ channel = Channel(SIGNED, False, True, 32)
+ native_type = 'int'
+ suffix = 'signed'
+ generate_format_unpack(format, channel, native_type, suffix)
+ generate_format_pack(format, channel, native_type, suffix)
+ elif format.is_pure_signed():
+ native_type = 'int'
+ suffix = 'signed'
+ channel = Channel(SIGNED, False, True, 32)
+
+ generate_format_unpack(format, channel, native_type, suffix)
+ generate_format_pack(format, channel, native_type, suffix)
+ generate_format_fetch(format, channel, native_type, suffix)
+
+ native_type = 'unsigned'
+ suffix = 'unsigned'
+ channel = Channel(UNSIGNED, False, True, 32)
+ generate_format_unpack(format, channel, native_type, suffix)
+ generate_format_pack(format, channel, native_type, suffix)
+ else:
+ channel = Channel(FLOAT, False, False, 32)
+ native_type = 'float'
+ suffix = 'rgba_float'
- generate_unpack(formats, channel, native_type, suffix)
- generate_pack(formats, channel, native_type, suffix)
+ generate_format_unpack(format, channel, native_type, suffix)
+ generate_format_pack(format, channel, native_type, suffix)
+ generate_format_fetch(format, channel, native_type, suffix)
- print
- print '#ifdef __cplusplus'
- print '}'
- print '#endif'
- print
- print '#endif /* ! U_FORMAT_PACK_H */'
+ channel = Channel(UNSIGNED, True, False, 8)
+ native_type = 'uint8_t'
+ suffix = 'rgba_8unorm'
+ generate_format_unpack(format, channel, native_type, suffix)
+ generate_format_pack(format, channel, native_type, suffix)
-if __name__ == '__main__':
- main()
projects / mesa.git / blobdiff