print
-def generate_srgb_tables():
- print 'static ubyte srgb_to_linear[256] = {'
- for i in range(256):
- print ' %s,' % (int(math.pow((i / 255.0 + 0.055) / 1.055, 2.4) * 255))
- print '};'
- print
- print 'static ubyte linear_to_srgb[256] = {'
- print ' 0,'
- for i in range(1, 256):
- print ' %s,' % (int((1.055 * math.pow(i / 255.0, 0.41666) - 0.055) * 255))
- print '};'
- print
-
-
def bswap_format(format):
'''Generate a structure that describes the format.'''
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 dst_colorspace == 'rgb'
+ 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:
+ return 'util_format_linear_float_to_srgb_8unorm(%s)' % value
+ else:
+ assert src_channel.type == UNSIGNED
+ assert src_channel.norm
+ assert src_channel.size == 8
+ return 'util_format_linear_to_srgb_8unorm(%s)' % value
+ elif src_colorspace == 'zs':
+ pass
+ elif dst_colorspace == 'zs':
+ pass
+ else:
+ assert 0
+
if src_channel == dst_channel:
return value
swizzle = format.swizzles[i]
if swizzle < 4:
src_channel = format.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)
+ 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:
swizzle = format.swizzles[i]
if swizzle < 4:
src_channel = format.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)
+ 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:
dst_channel = format.channels[i]
if inv_swizzle[i] is not None:
value ='src[%u]' % inv_swizzle[i]
- value = conversion_expr(src_channel, dst_channel, dst_native_type, value)
+ 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 format.colorspace == ZS:
if i == 3:
value = get_one(dst_channel)
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)
+ value = conversion_expr(src_channel,
+ dst_channel, dst_native_type,
+ value,
+ dst_colorspace = dst_colorspace)
if format.colorspace == ZS:
if i == 3:
value = get_one(dst_channel)
print '#include "pipe/p_compiler.h"'
print '#include "u_math.h"'
print '#include "u_format.h"'
+ print '#include "u_format_srgb.h"'
print '#include "u_half.h"'
print
{PIPE_FORMAT_L16_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0xffff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
/*
- * TODO: SRGB formats
+ * SRGB formats
+ *
+ * FIXME: Alpha appears to be linear.
*/
+ {PIPE_FORMAT_L8_SRGB, PACKED_1x8(0xff), PACKED_1x8(0x00), UNPACKED_1x1(0.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_L8_SRGB, PACKED_1x8(0xff), PACKED_1x8(0xbc), UNPACKED_1x1(0.502886458033, 0.502886458033, 0.502886458033, 1.0)},
+ {PIPE_FORMAT_L8_SRGB, PACKED_1x8(0xff), PACKED_1x8(0xff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
+
+ {PIPE_FORMAT_L8A8_SRGB, PACKED_1x16(0xffff), PACKED_1x16(0x0000), UNPACKED_1x1(0.0, 0.0, 0.0, 0.0)},
+ {PIPE_FORMAT_L8A8_SRGB, PACKED_1x16(0xffff), PACKED_1x16(0x00bc), UNPACKED_1x1(0.502886458033, 0.502886458033, 0.502886458033, 0.0)},
+ {PIPE_FORMAT_L8A8_SRGB, PACKED_1x16(0xffff), PACKED_1x16(0x00ff), UNPACKED_1x1(1.0, 1.0, 1.0, 0.0)},
+ {PIPE_FORMAT_L8A8_SRGB, PACKED_1x16(0xffff), PACKED_1x16(0xcc00), UNPACKED_1x1(0.0, 0.0, 0.0, 0.8)},
+ {PIPE_FORMAT_L8A8_SRGB, PACKED_1x16(0xffff), PACKED_1x16(0xff00), UNPACKED_1x1(0.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_L8A8_SRGB, PACKED_1x16(0xffff), PACKED_1x16(0xffff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
+
+ {PIPE_FORMAT_R8G8B8_SRGB, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0x00, 0x00), UNPACKED_1x1(0.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_R8G8B8_SRGB, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0xbc, 0x00, 0x00), UNPACKED_1x1(0.502886458033, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_R8G8B8_SRGB, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0xff, 0x00, 0x00), UNPACKED_1x1(1.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_R8G8B8_SRGB, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0xbc, 0x00), UNPACKED_1x1(0.0, 0.502886458033, 0.0, 1.0)},
+ {PIPE_FORMAT_R8G8B8_SRGB, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0xff, 0x00), UNPACKED_1x1(0.0, 1.0, 0.0, 1.0)},
+ {PIPE_FORMAT_R8G8B8_SRGB, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0x00, 0xbc), UNPACKED_1x1(0.0, 0.0, 0.502886458033, 1.0)},
+ {PIPE_FORMAT_R8G8B8_SRGB, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0x00, 0xff), UNPACKED_1x1(0.0, 0.0, 1.0, 1.0)},
+ {PIPE_FORMAT_R8G8B8_SRGB, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0xff, 0xff, 0xff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
+
+ {PIPE_FORMAT_R8G8B8A8_SRGB, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x00, 0x00), UNPACKED_1x1(0.0, 0.0, 0.0, 0.0)},
+ {PIPE_FORMAT_R8G8B8A8_SRGB, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0xbc, 0x00, 0x00, 0x00), UNPACKED_1x1(0.502886458033, 0.0, 0.0, 0.0)},
+ {PIPE_FORMAT_R8G8B8A8_SRGB, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0xff, 0x00, 0x00, 0x00), UNPACKED_1x1(1.0, 0.0, 0.0, 0.0)},
+ {PIPE_FORMAT_R8G8B8A8_SRGB, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0xbc, 0x00, 0x00), UNPACKED_1x1(0.0, 0.502886458033, 0.0, 0.0)},
+ {PIPE_FORMAT_R8G8B8A8_SRGB, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0xff, 0x00, 0x00), UNPACKED_1x1(0.0, 1.0, 0.0, 0.0)},
+ {PIPE_FORMAT_R8G8B8A8_SRGB, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0xbc, 0x00), UNPACKED_1x1(0.0, 0.0, 0.502886458033, 0.0)},
+ {PIPE_FORMAT_R8G8B8A8_SRGB, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0xff, 0x00), UNPACKED_1x1(0.0, 0.0, 1.0, 0.0)},
+ {PIPE_FORMAT_R8G8B8A8_SRGB, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x00, 0xcc), UNPACKED_1x1(0.0, 0.0, 0.0, 0.8)},
+ {PIPE_FORMAT_R8G8B8A8_SRGB, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x00, 0xff), UNPACKED_1x1(0.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_R8G8B8A8_SRGB, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0xff, 0xff, 0xff, 0xff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
+
+ {PIPE_FORMAT_B8G8R8A8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x00000000), UNPACKED_1x1(0.0, 0.0, 0.0, 0.0)},
+ {PIPE_FORMAT_B8G8R8A8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x000000bc), UNPACKED_1x1(0.0, 0.0, 0.502886458033, 0.0)},
+ {PIPE_FORMAT_B8G8R8A8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x000000ff), UNPACKED_1x1(0.0, 0.0, 1.0, 0.0)},
+ {PIPE_FORMAT_B8G8R8A8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x0000bc00), UNPACKED_1x1(0.0, 0.502886458033, 0.0, 0.0)},
+ {PIPE_FORMAT_B8G8R8A8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x0000ff00), UNPACKED_1x1(0.0, 1.0, 0.0, 0.0)},
+ {PIPE_FORMAT_B8G8R8A8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x00bc0000), UNPACKED_1x1(0.502886458033, 0.0, 0.0, 0.0)},
+ {PIPE_FORMAT_B8G8R8A8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x00ff0000), UNPACKED_1x1(1.0, 0.0, 0.0, 0.0)},
+ {PIPE_FORMAT_B8G8R8A8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0xcc000000), UNPACKED_1x1(0.0, 0.0, 0.0, 0.8)},
+ {PIPE_FORMAT_B8G8R8A8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0xff000000), UNPACKED_1x1(0.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_B8G8R8A8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0xffffffff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
+
+ {PIPE_FORMAT_B8G8R8X8_SRGB, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00000000), UNPACKED_1x1(0.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_B8G8R8X8_SRGB, PACKED_1x32(0x00ffffff), PACKED_1x32(0x000000bc), UNPACKED_1x1(0.0, 0.0, 0.502886458033, 1.0)},
+ {PIPE_FORMAT_B8G8R8X8_SRGB, PACKED_1x32(0x00ffffff), PACKED_1x32(0x000000ff), UNPACKED_1x1(0.0, 0.0, 1.0, 1.0)},
+ {PIPE_FORMAT_B8G8R8X8_SRGB, PACKED_1x32(0x00ffffff), PACKED_1x32(0x0000bc00), UNPACKED_1x1(0.0, 0.502886458033, 0.0, 1.0)},
+ {PIPE_FORMAT_B8G8R8X8_SRGB, PACKED_1x32(0x00ffffff), PACKED_1x32(0x0000ff00), UNPACKED_1x1(0.0, 1.0, 0.0, 1.0)},
+ {PIPE_FORMAT_B8G8R8X8_SRGB, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00bc0000), UNPACKED_1x1(0.502886458033, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_B8G8R8X8_SRGB, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00ff0000), UNPACKED_1x1(1.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_B8G8R8X8_SRGB, PACKED_1x32(0x00ffffff), PACKED_1x32(0xffffffff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
+
+ {PIPE_FORMAT_A8R8G8B8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x00000000), UNPACKED_1x1(0.0, 0.0, 0.0, 0.0)},
+ {PIPE_FORMAT_A8R8G8B8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x000000cc), UNPACKED_1x1(0.0, 0.0, 0.0, 0.8)},
+ {PIPE_FORMAT_A8R8G8B8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x000000ff), UNPACKED_1x1(0.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_A8R8G8B8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x0000bc00), UNPACKED_1x1(0.502886458033, 0.0, 0.0, 0.0)},
+ {PIPE_FORMAT_A8R8G8B8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x0000ff00), UNPACKED_1x1(1.0, 0.0, 0.0, 0.0)},
+ {PIPE_FORMAT_A8R8G8B8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x00bc0000), UNPACKED_1x1(0.0, 0.502886458033, 0.0, 0.0)},
+ {PIPE_FORMAT_A8R8G8B8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x00ff0000), UNPACKED_1x1(0.0, 1.0, 0.0, 0.0)},
+ {PIPE_FORMAT_A8R8G8B8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0xbc000000), UNPACKED_1x1(0.0, 0.0, 0.502886458033, 0.0)},
+ {PIPE_FORMAT_A8R8G8B8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0xff000000), UNPACKED_1x1(0.0, 0.0, 1.0, 0.0)},
+ {PIPE_FORMAT_A8R8G8B8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0xffffffff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
+
+ {PIPE_FORMAT_X8R8G8B8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0x00000000), UNPACKED_1x1(0.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_X8R8G8B8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0x0000bc00), UNPACKED_1x1(0.502886458033, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_X8R8G8B8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0x0000ff00), UNPACKED_1x1(1.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_X8R8G8B8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0x00bc0000), UNPACKED_1x1(0.0, 0.502886458033, 0.0, 1.0)},
+ {PIPE_FORMAT_X8R8G8B8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0x00ff0000), UNPACKED_1x1(0.0, 1.0, 0.0, 1.0)},
+ {PIPE_FORMAT_X8R8G8B8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0xbc000000), UNPACKED_1x1(0.0, 0.0, 0.502886458033, 1.0)},
+ {PIPE_FORMAT_X8R8G8B8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0xff000000), UNPACKED_1x1(0.0, 0.0, 1.0, 1.0)},
+ {PIPE_FORMAT_X8R8G8B8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0xffffffff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
+
+ {PIPE_FORMAT_A8B8G8R8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x00000000), UNPACKED_1x1(0.0, 0.0, 0.0, 0.0)},
+ {PIPE_FORMAT_A8B8G8R8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x000000cc), UNPACKED_1x1(0.0, 0.0, 0.0, 0.8)},
+ {PIPE_FORMAT_A8B8G8R8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x000000ff), UNPACKED_1x1(0.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_A8B8G8R8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x0000bc00), UNPACKED_1x1(0.0, 0.0, 0.502886458033, 0.0)},
+ {PIPE_FORMAT_A8B8G8R8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x0000ff00), UNPACKED_1x1(0.0, 0.0, 1.0, 0.0)},
+ {PIPE_FORMAT_A8B8G8R8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x00bc0000), UNPACKED_1x1(0.0, 0.502886458033, 0.0, 0.0)},
+ {PIPE_FORMAT_A8B8G8R8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x00ff0000), UNPACKED_1x1(0.0, 1.0, 0.0, 0.0)},
+ {PIPE_FORMAT_A8B8G8R8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0xbc000000), UNPACKED_1x1(0.502886458033, 0.0, 0.0, 0.0)},
+ {PIPE_FORMAT_A8B8G8R8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0xff000000), UNPACKED_1x1(1.0, 0.0, 0.0, 0.0)},
+ {PIPE_FORMAT_A8B8G8R8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0xffffffff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
+
+ {PIPE_FORMAT_X8B8G8R8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0x00000000), UNPACKED_1x1(0.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_X8B8G8R8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0x0000bc00), UNPACKED_1x1(0.0, 0.0, 0.502886458033, 1.0)},
+ {PIPE_FORMAT_X8B8G8R8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0x0000ff00), UNPACKED_1x1(0.0, 0.0, 1.0, 1.0)},
+ {PIPE_FORMAT_X8B8G8R8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0x00bc0000), UNPACKED_1x1(0.0, 0.502886458033, 0.0, 1.0)},
+ {PIPE_FORMAT_X8B8G8R8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0x00ff0000), UNPACKED_1x1(0.0, 1.0, 0.0, 1.0)},
+ {PIPE_FORMAT_X8B8G8R8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0xbc000000), UNPACKED_1x1(0.502886458033, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_X8B8G8R8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0xff000000), UNPACKED_1x1(1.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_X8B8G8R8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0xffffffff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
+
/*
* Mixed-signed formats
*/