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Diffstat (limited to 'src/gallium/auxiliary/util/u_format_pack.py')
-rw-r--r--src/gallium/auxiliary/util/u_format_pack.py209
1 files changed, 157 insertions, 52 deletions
diff --git a/src/gallium/auxiliary/util/u_format_pack.py b/src/gallium/auxiliary/util/u_format_pack.py
index 3f33f7cc02..409d024c63 100644
--- a/src/gallium/auxiliary/util/u_format_pack.py
+++ b/src/gallium/auxiliary/util/u_format_pack.py
@@ -252,9 +252,6 @@ def conversion_expr(src_channel, dst_channel, dst_native_type, value, clamp=True
if src_channel.type == FLOAT and dst_channel.type == FLOAT:
return '(%s)%s' % (dst_native_type, value)
- if not src_channel.norm and not dst_channel.norm:
- return '(%s)%s' % (dst_native_type, value)
-
if clamp:
value = clamp_expr(src_channel, dst_channel, dst_native_type, value)
@@ -280,15 +277,15 @@ def conversion_expr(src_channel, dst_channel, dst_native_type, value, clamp=True
value = '(%s * %s)' % (value, scale)
return '(%s)%s' % (dst_native_type, value)
- if not src_channel.norm and not dst_channel.norm:
- # neither is normalized -- just cast
- return '(%s)%s' % (dst_native_type, 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:
+ # 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:
+ if src_one > dst_one and src_channel.norm and dst_channel.norm:
# We can just bitshift
src_shift = get_one_shift(src_channel)
dst_shift = get_one_shift(dst_channel)
@@ -296,7 +293,7 @@ def conversion_expr(src_channel, dst_channel, dst_native_type, value, clamp=True
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)
- value = '(%s)%s' % (tmp_native_type, value)
+ 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
@@ -307,6 +304,8 @@ def conversion_expr(src_channel, dst_channel, dst_native_type, value, clamp=True
def generate_format_unpack(format, dst_channel, dst_native_type, dst_suffix):
'''Generate the function to unpack pixels from a particular format'''
+ assert format.layout == PLAIN
+
name = format.short_name()
src_native_type = native_type(format)
@@ -314,32 +313,99 @@ def generate_format_unpack(format, dst_channel, dst_native_type, dst_suffix):
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)
+
+ if format.is_bitmask():
+ depth = format.block_size()
+ print ' uint%u_t value = *(uint%u_t *)src;' % (depth, depth)
- assert format.layout == PLAIN
+ # Declare the intermediate variables
+ for i in range(format.nr_channels()):
+ src_channel = format.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)
- 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:
+ print '#ifdef PIPE_ARCH_BIG_ENDIAN'
+ print ' value = util_bswap%u(value);' % depth
+ print '#endif'
+
+ # Compute the intermediate unshifted values
+ shift = 0
+ for i in range(format.nr_channels()):
+ src_channel = format.channels[i]
+ value = 'value'
+ 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)
+
+ shift += src_channel.size
+
+ # Convert, swizzle, and store final values
+ for i in range(4):
+ swizzle = format.swizzles[i]
+ if swizzle < 4:
+ src_channel = format.channels[swizzle]
+ value = 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])
+
+ else:
+ print ' union util_format_%s pixel;' % format.short_name()
+ print ' memcpy(&pixel, src, sizeof pixel);'
+ bswap_format(format)
+
+ 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 i >= 1:
- value = 'dst[0]'
- print ' dst[%u] = %s; /* %s */' % (i, value, 'rgba'[i])
+ 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])
print '}'
print
@@ -352,31 +418,70 @@ def generate_format_pack(format, src_channel, src_native_type, src_suffix):
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()
+
+ 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 '{'
+
+ if format.is_bitmask():
+ depth = format.block_size()
+ print ' uint%u_t value = 0;' % depth
+
+ shift = 0
+ for i in range(4):
+ dst_channel = format.channels[i]
+ if inv_swizzle[i] is not None:
+ 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'
+ 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)
+
+ shift += dst_channel.size
- 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)
+ print '#ifdef PIPE_ARCH_BIG_ENDIAN'
+ print ' value = util_bswap%u(value);' % depth
+ print '#endif'
+
+ print ' *(uint%u_t *)dst = value;' % depth
- bswap_format(format)
- print ' memcpy(dst, &pixel, sizeof pixel);'
+ else:
+ print ' union util_format_%s pixel;' % format.short_name()
+
+ 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)
+
+ bswap_format(format)
+ print ' memcpy(dst, &pixel, sizeof pixel);'
+
print '}'
print
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-01 08:27:07 +0000