diff options
Diffstat (limited to 'src/gallium/auxiliary/util/u_format_pack.py')
| -rw-r--r-- | src/gallium/auxiliary/util/u_format_pack.py | 337 |
1 files changed, 180 insertions, 157 deletions
diff --git a/src/gallium/auxiliary/util/u_format_pack.py b/src/gallium/auxiliary/util/u_format_pack.py index 409d024c63..95c0c79be9 100644 --- a/src/gallium/auxiliary/util/u_format_pack.py +++ b/src/gallium/auxiliary/util/u_format_pack.py @@ -38,19 +38,59 @@ import sys +import math from u_format_parse import * +def generate_f16_to_f32(): + '''Naive implementation, need something faster that operates on bits''' + + print ''' +static float +f16_to_f32(uint16_t h) +{ + unsigned mantissa = h & 0x3ff; + unsigned exponent = (h >> 10) & 0x1f; + float sign = (h & 0x8000) ? -1.0f : 1.0f; + + if (exponent == 0) { + if (mantissa == 0) { + return sign * 0.0f; + } + return sign * powf(2.0f, -14.0f) * (float)mantissa / 1024.0f; + } + if (exponent == 31) { + if (mantissa == 0) { + /* XXX: infinity */ + return sign * 100000.0f; + } + /* XXX: NaN */ + return 1000.0f; + } + return sign * powf(2.0f, (float)exponent - 15.0f) * (1.0f + (float)mantissa / 1024.0f); +} +''' + +def generate_f32_to_f16(): + print ''' +static uint16_t +f32_to_f16(float f) +{ + /* TODO */ + return 0; +} +''' + def generate_format_type(format): '''Generate a structure that describes the format.''' print 'union util_format_%s {' % format.short_name() - if format.is_bitmask(): + if format.is_bitmask() or format.short_name() == "r11g11b10_float": print ' uint%u_t value;' % (format.block_size(),) print ' struct {' for channel in format.channels: - if format.is_bitmask() and not format.is_array(): + if (format.is_bitmask() or format.is_mixed()) and not format.is_array() or format.short_name() == "r11g11b10_float": if channel.type == VOID: if channel.size: print ' unsigned %s:%u;' % (channel.name, channel.size) @@ -58,6 +98,11 @@ def generate_format_type(format): print ' unsigned %s:%u;' % (channel.name, channel.size) elif channel.type == SIGNED: print ' int %s:%u;' % (channel.name, channel.size) + elif channel.type == FLOAT: + if channel.size == 32: + print ' float %s;' % (channel.name) + else: + print ' unsigned %s:%u;' % (channel.name, channel.size) else: assert 0 else: @@ -85,6 +130,20 @@ def generate_format_type(format): 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.''' @@ -124,15 +183,17 @@ def native_type(format): 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.channels[0] + if channel.type in (UNSIGNED, VOID): + return 'uint%u_t' % channel.size + elif channel.type == SIGNED: + 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 @@ -179,31 +240,6 @@ def get_one(type): 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 - - def clamp_expr(src_channel, dst_channel, dst_native_type, value): '''Generate the expression to clamp the value in the source type to the destination type range.''' @@ -211,21 +247,6 @@ 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() @@ -250,7 +271,17 @@ def conversion_expr(src_channel, dst_channel, dst_native_type, value, clamp=True return value if src_channel.type == FLOAT and dst_channel.type == FLOAT: - return '(%s)%s' % (dst_native_type, value) + if src_channel.size == dst_channel.size: + return value + if src_channel.size == 64: + value = '(float)%s' % (value) + elif src_channel.size == 16: + value = 'f16_to_f32(%s)' % (value) + if dst_channel.size == 16: + value = 'f32_to_f16(%s)' % (value) + elif dst_channel.size == 64: + value = '(double)%s' % (value) + return value if clamp: value = clamp_expr(src_channel, dst_channel, dst_native_type, value) @@ -301,33 +332,29 @@ def conversion_expr(src_channel, dst_channel, dst_native_type, value, clamp=True assert False -def generate_format_unpack(format, dst_channel, dst_native_type, dst_suffix): - '''Generate the function to unpack pixels from a particular format''' +def generate_unpack_kernel(format, dst_channel, dst_native_type): + if not is_format_supported(format): + return + assert format.layout == PLAIN - name = format.short_name() - 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 '{' - if format.is_bitmask(): depth = format.block_size() - print ' uint%u_t value = *(uint%u_t *)src;' % (depth, depth) + print ' uint%u_t value = *(uint%u_t *)src;' % (depth, depth) # 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) + print ' uint%u_t %s;' % (depth, src_channel.name) elif src_channel.type == SIGNED: - print ' int%u_t %s;' % (depth, src_channel.name) + print ' int%u_t %s;' % (depth, src_channel.name) print '#ifdef PIPE_ARCH_BIG_ENDIAN' - print ' value = util_bswap%u(value);' % depth + print ' value = util_bswap%u(value);' % depth print '#endif' # Compute the intermediate unshifted values @@ -355,7 +382,7 @@ def generate_format_unpack(format, dst_channel, dst_native_type, dst_suffix): value = None if value is not None: - print ' %s = %s;' % (src_channel.name, value) + print ' %s = %s;' % (src_channel.name, value) shift += src_channel.size @@ -379,11 +406,11 @@ def generate_format_unpack(format, dst_channel, dst_native_type, dst_suffix): value = get_one(dst_channel) elif i >= 1: value = 'dst[0]' - print ' dst[%u] = %s; /* %s */' % (i, value, 'rgba'[i]) + 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);' + print ' union util_format_%s pixel;' % format.short_name() + print ' memcpy(&pixel, src, sizeof pixel);' bswap_format(format) for i in range(4): @@ -405,36 +432,29 @@ def generate_format_unpack(format, dst_channel, dst_native_type, dst_suffix): value = get_one(dst_channel) elif i >= 1: value = 'dst[0]' - print ' dst[%u] = %s; /* %s */' % (i, value, 'rgba'[i]) - - print '}' - print + print ' dst[%u] = %s; /* %s */' % (i, value, 'rgba'[i]) -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) 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 + 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 ='src[%u]' % inv_swizzle[i] value = conversion_expr(src_channel, dst_channel, dst_native_type, value) if format.colorspace == ZS: if i == 3: @@ -452,138 +472,141 @@ def generate_format_pack(format, src_channel, src_native_type, src_suffix): else: value = None if value is not None: - print ' value |= %s;' % (value) + print ' value |= %s;' % (value) shift += dst_channel.size print '#ifdef PIPE_ARCH_BIG_ENDIAN' - print ' value = util_bswap%u(value);' % depth + print ' value = util_bswap%u(value);' % depth print '#endif' - print ' *(uint%u_t *)dst = value;' % depth + print ' *(uint%u_t *)dst = value;' % depth else: - print ' union util_format_%s pixel;' % format.short_name() + 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 ='src[%u]' % 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 ' pixel.chan.%s = %s;' % (dst_channel.name, value) bswap_format(format) - print ' memcpy(dst, &pixel, sizeof pixel);' - - print '}' - print + print ' memcpy(dst, &pixel, sizeof pixel);' -def generate_unpack(formats, dst_channel, dst_native_type, dst_suffix): - '''Generate the dispatch function to unpack pixels from any format''' +def generate_format_unpack(format, dst_channel, dst_native_type, dst_suffix): + '''Generate the function to unpack pixels from 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 '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 '{' - 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 ' %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 ' }' + print '}' print + +def generate_format_pack(format, src_channel, src_native_type, src_suffix): + '''Generate the function to pack pixels to 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 '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)(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): + 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 main(): - formats = [] - for arg in sys.argv[1:]: - formats.extend(parse(arg)) + name = format.short_name() - 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 '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 '{' + + if is_format_supported(format): + generate_unpack_kernel(format, dst_channel, dst_native_type) + print '}' 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_format.h"' print - generate_clamp() + generate_f16_to_f32() + generate_f32_to_f16() for format in formats: - if format.layout == PLAIN: + if is_format_supported(format): generate_format_type(format) channel = Channel(FLOAT, False, 32) native_type = 'float' - suffix = '4f' + suffix = 'float' - generate_unpack(formats, channel, native_type, suffix) - generate_pack(formats, channel, native_type, suffix) + for format in formats: + if format.layout != 's3tc': + 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(UNSIGNED, True, 8) native_type = 'uint8_t' - suffix = '4ub' - - generate_unpack(formats, channel, native_type, suffix) - generate_pack(formats, channel, native_type, suffix) - - print - print '#ifdef __cplusplus' - print '}' - print '#endif' - print - print '#endif /* ! U_FORMAT_PACK_H */' + suffix = '8unorm' + for format in formats: + if format.layout != 's3tc': + generate_format_unpack(format, channel, native_type, suffix) + generate_format_pack(format, channel, native_type, suffix) -if __name__ == '__main__': - main() |