#!/usr/bin/env python
CopyRight = '''
/**************************************************************************
*
* Copyright 2009 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/**
* @file
* Pixel format accessor functions.
*
* @author Jose Fonseca <jfonseca@vmware.com>
*/
'''
import sys
import os.path
sys.path.insert(0, os.path.join(os.path.dirname(sys.argv[0]), '../../auxiliary/util'))
from u_format_pack import *
def is_format_supported(format):
'''Determines whether we actually have the plumbing necessary to generate the
to read/write to/from this format.'''
# FIXME: Ideally we would support any format combination here.
if format.name == 'PIPE_FORMAT_R11G11B10_FLOAT':
return True;
if format.name == 'PIPE_FORMAT_R9G9B9E5_FLOAT':
return True;
if format.layout != PLAIN:
return False
for i in range(4):
channel = format.channels[i]
if channel.type not in (VOID, UNSIGNED, SIGNED, FLOAT):
return False
if channel.type == FLOAT and channel.size not in (16, 32 ,64):
return False
if format.colorspace not in ('rgb', 'srgb'):
return False
return True
def generate_format_read(format, dst_channel, dst_native_type, dst_suffix):
'''Generate the function to read pixels from a particular format'''
name = format.short_name()
src_native_type = native_type(format)
print 'static void'
print 'lp_tile_%s_swizzle_%s(%s * restrict dst, const uint8_t * restrict src, unsigned src_stride, unsigned x0, unsigned y0)' % (name, dst_suffix, dst_native_type)
print '{'
print ' unsigned x, y;'
print ' const uint8_t *src_row = src + y0*src_stride;'
print ' for (y = 0; y < TILE_SIZE; ++y) {'
print ' const %s *src_pixel = (const %s *)(src_row + x0*%u);' % (src_native_type, src_native_type, format.stride())
print ' for (x = 0; x < TILE_SIZE; ++x) {'
names = ['']*4
if format.colorspace in ('rgb', 'srgb'):
for i in range(4):
swizzle = format.swizzles[i]
if swizzle < 4:
names[swizzle] += 'rgba'[i]
elif format.colorspace == 'zs':
swizzle = format.swizzles[0]
if swizzle < 4:
names[swizzle] = 'z'
else:
assert False
else:
assert False
if format.name == 'PIPE_FORMAT_R11G11B10_FLOAT':
print ' float tmp[3];'
print ' uint8_t r, g, b;'
print ' r11g11b10f_to_float3(*src_pixel++, tmp);'
for i in range(3):
print ' %s = tmp[%d] * 0xff;' % (names[i], i)
elif format.name == 'PIPE_FORMAT_R9G9B9E5_FLOAT':
print ' float tmp[3];'
print ' uint8_t r, g, b;'
print ' rgb9e5_to_float3(*src_pixel++, tmp);'
for i in range(3):
print ' %s = tmp[%d] * 0xff;' % (names[i], i)
elif format.layout == PLAIN:
if not format.is_array():
print ' %s pixel = *src_pixel++;' % src_native_type
shift = 0;
for i in range(4):
src_channel = format.channels[i]
width = src_channel.size
if names[i]:
value = 'pixel'
mask = (1 << width) - 1
if shift:
value = '(%s >> %u)' % (value, shift)
if shift + width < format.block_size():
value = '(%s & 0x%x)' % (value, mask)
value = conversion_expr(src_channel, dst_channel, dst_native_type, value, clamp=False)
print ' %s %s = %s;' % (dst_native_type, names[i], value)
shift += width
else:
for i in range(4):
if names[i]:
print ' %s %s;' % (dst_native_type, names[i])
for i in range(4):
src_channel = format.channels[i]
if names[i]:
value = '(*src_pixel++)'
value = conversion_expr(src_channel, dst_channel, dst_native_type, value, clamp=False)
print ' %s = %s;' % (names[i], value)
elif src_channel.size:
print ' ++src_pixel;'
else:
assert False
for i in range(4):
if format.colorspace in ('rgb', 'srgb'):
swizzle = format.swizzles[i]
if swizzle < 4:
value = names[swizzle]
elif swizzle == SWIZZLE_0:
value = '0'
elif swizzle == SWIZZLE_1:
value = get_one(dst_channel)
else:
assert False
elif format.colorspace == 'zs':
if i < 3:
value = 'z'
else:
value = get_one(dst_channel)
else:
assert False
print ' TILE_PIXEL(dst, x, y, %u) = %s; /* %s */' % (i, value, 'rgba'[i])
print ' }'
print ' src_row += src_stride;'
print ' }'
print '}'
print
def pack_rgba(format, src_channel, r, g, b, a):
"""Return an expression for packing r, g, b, a into a pixel of the
given format. Ex: '(b << 24) | (g << 16) | (r << 8) | (a << 0)'
"""
assert format.colorspace in ('rgb', 'srgb')
inv_swizzle = format.inv_swizzles()
shift = 0
expr = None
for i in range(4):
# choose r, g, b, or a depending on the inverse swizzle term
if inv_swizzle[i] == 0:
value = r
elif inv_swizzle[i] == 1:
value = g
elif inv_swizzle[i] == 2:
value = b
elif inv_swizzle[i] == 3:
value = a
else:
value = None
if value:
dst_channel = format.channels[i]
dst_native_type = native_type(format)
value = conversion_expr(src_channel, dst_channel, dst_native_type, value, clamp=False)
term = "((%s) << %d)" % (value, shift)
if expr:
expr = expr + " | " + term
else:
expr = term
width = format.channels[i].size
shift = shift + width
return expr
def emit_unrolled_unswizzle_code(format, src_channel):
'''Emit code for writing a block based on unrolled loops.
This is considerably faster than the TILE_PIXEL-based code below.
'''
dst_native_type = 'uint%u_t' % format.block_size()
print ' const unsigned dstpix_stride = dst_stride / %d;' % format.stride()
print ' %s *dstpix = (%s *) dst;' % (dst_native_type, dst_native_type)
print ' unsigned int qx, qy, i;'
print
print ' for (qy = 0; qy < TILE_SIZE; qy += TILE_VECTOR_HEIGHT) {'
print ' const unsigned py = y0 + qy;'
print ' for (qx = 0; qx < TILE_SIZE; qx += TILE_VECTOR_WIDTH) {'
print ' const unsigned px = x0 + qx;'
print ' const uint8_t *r = src + 0 * TILE_C_STRIDE;'
print ' const uint8_t *g = src + 1 * TILE_C_STRIDE;'
print ' const uint8_t *b = src + 2 * TILE_C_STRIDE;'
print ' const uint8_t *a = src + 3 * TILE_C_STRIDE;'
print ' (void) r; (void) g; (void) b; (void) a; /* silence warnings */'
print ' for (i = 0; i < TILE_C_STRIDE; i += 2) {'
print ' const uint32_t pixel0 = %s;' % pack_rgba(format, src_channel, "r[i+0]", "g[i+0]", "b[i+0]", "a[i+0]")
print ' const uint32_t pixel1 = %s;' % pack_rgba(format, src_channel, "r[i+1]", "g[i+1]", "b[i+1]", "a[i+1]")
print ' const unsigned offset = (py + tile_y_offset[i]) * dstpix_stride + (px + tile_x_offset[i]);'
print ' dstpix[offset + 0] = pixel0;'
print ' dstpix[offset + 1] = pixel1;'
print ' }'
print ' src += TILE_X_STRIDE;'
print ' }'
print ' }'
def emit_tile_pixel_unswizzle_code(format, src_channel):
'''Emit code for writing a block based on the TILE_PIXEL macro.'''
dst_native_type = native_type(format)
inv_swizzle = format.inv_swizzles()
print ' unsigned x, y;'
print ' uint8_t *dst_row = dst + y0*dst_stride;'
print ' for (y = 0; y < TILE_SIZE; ++y) {'
print ' %s *dst_pixel = (%s *)(dst_row + x0*%u);' % (dst_native_type, dst_native_type, format.stride())
print ' for (x = 0; x < TILE_SIZE; ++x) {'
if format.name == 'PIPE_FORMAT_R11G11B10_FLOAT':
print ' float tmp[3];'
for i in range(3):
print ' tmp[%d] = ubyte_to_float(TILE_PIXEL(src, x, y, %u));' % (i, inv_swizzle[i])
print ' *dst_pixel++ = float3_to_r11g11b10f(tmp);'
elif format.name == 'PIPE_FORMAT_R9G9B9E5_FLOAT':
print ' float tmp[3];'
for i in range(3):
print ' tmp[%d] = ubyte_to_float(TILE_PIXEL(src, x, y, %u));' % (i, inv_swizzle[i])
print ' *dst_pixel++ = float3_to_rgb9e5(tmp);'
elif format.layout == PLAIN:
if not format.is_array():
print ' %s pixel = 0;' % dst_native_type
shift = 0;
for i in range(4):
dst_channel = format.channels[i]
width = dst_channel.size
if inv_swizzle[i] is not None:
value = 'TILE_PIXEL(src, x, y, %u)' % inv_swizzle[i]
value = conversion_expr(src_channel, dst_channel, dst_native_type, value, clamp=False)
if shift:
value = '(%s << %u)' % (value, shift)
print ' pixel |= %s;' % value
shift += width
print ' *dst_pixel++ = pixel;'
else:
for i in range(4):
dst_channel = format.channels[i]
if inv_swizzle[i] is not None:
value = 'TILE_PIXEL(src, x, y, %u)' % inv_swizzle[i]
value = conversion_expr(src_channel, dst_channel, dst_native_type, value, clamp=False)
print ' *dst_pixel++ = %s;' % value
elif dst_channel.size:
print ' ++dst_pixel;'
else:
assert False
print ' }'
print ' dst_row += dst_stride;'
print ' }'
def generate_format_write(format, src_channel, src_native_type, src_suffix):
'''Generate the function to write pixels to a particular format'''
name = format.short_name()
print 'static void'
print 'lp_tile_%s_unswizzle_%s(const %s * restrict src, uint8_t * restrict dst, unsigned dst_stride, unsigned x0, unsigned y0)' % (name, src_suffix, src_native_type)
print '{'
if format.layout == PLAIN \
and format.colorspace == 'rgb' \
and format.block_size() <= 32 \
and format.is_pot() \
and not format.is_mixed() \
and (format.channels[0].type == UNSIGNED \
or format.channels[1].type == UNSIGNED):
emit_unrolled_unswizzle_code(format, src_channel)
else:
emit_tile_pixel_unswizzle_code(format, src_channel)
print '}'
print
def generate_sse2():
print '''
#if defined(PIPE_ARCH_SSE)
#include "util/u_sse.h"
static ALWAYS_INLINE void
swz4( const __m128i * restrict x,
const __m128i * restrict y,
const __m128i * restrict z,
const __m128i * restrict w,
__m128i * restrict a,
__m128i * restrict b,
__m128i * restrict c,
__m128i * restrict d)
{
__m128i i, j, k, l;
__m128i m, n, o, p;
__m128i e, f, g, h;
m = _mm_unpacklo_epi8(*x,*y);
n = _mm_unpackhi_epi8(*x,*y);
o = _mm_unpacklo_epi8(*z,*w);
p = _mm_unpackhi_epi8(*z,*w);
i = _mm_unpacklo_epi16(m,n);
j = _mm_unpackhi_epi16(m,n);
k = _mm_unpacklo_epi16(o,p);
l = _mm_unpackhi_epi16(o,p);
e = _mm_unpacklo_epi8(i,j);
f = _mm_unpackhi_epi8(i,j);
g = _mm_unpacklo_epi8(k,l);
h = _mm_unpackhi_epi8(k,l);
*a = _mm_unpacklo_epi64(e,g);
*b = _mm_unpackhi_epi64(e,g);
*c = _mm_unpacklo_epi64(f,h);
*d = _mm_unpackhi_epi64(f,h);
}
static ALWAYS_INLINE void
unswz4( const __m128i * restrict a,
const __m128i * restrict b,
const __m128i * restrict c,
const __m128i * restrict d,
__m128i * restrict x,
__m128i * restrict y,
__m128i * restrict z,
__m128i * restrict w)
{
__m128i i, j, k, l;
__m128i m, n, o, p;
i = _mm_unpacklo_epi8(*a,*b);
j = _mm_unpackhi_epi8(*a,*b);
k = _mm_unpacklo_epi8(*c,*d);
l = _mm_unpackhi_epi8(*c,*d);
m = _mm_unpacklo_epi16(i,k);
n = _mm_unpackhi_epi16(i,k);
o = _mm_unpacklo_epi16(j,l);
p = _mm_unpackhi_epi16(j,l);
*x = _mm_unpacklo_epi64(m,n);
*y = _mm_unpackhi_epi64(m,n);
*z = _mm_unpacklo_epi64(o,p);
*w = _mm_unpackhi_epi64(o,p);
}
static void
lp_tile_b8g8r8a8_unorm_swizzle_4ub_sse2(uint8_t * restrict dst,
const uint8_t * restrict src, unsigned src_stride,
unsigned x0, unsigned y0)
{
__m128i *dst128 = (__m128i *) dst;
unsigned x, y;
src += y0 * src_stride;
src += x0 * sizeof(uint32_t);
for (y = 0; y < TILE_SIZE; y += 4) {
const uint8_t *src_row = src;
for (x = 0; x < TILE_SIZE; x += 4) {
swz4((const __m128i *) (src_row + 0 * src_stride),
(const __m128i *) (src_row + 1 * src_stride),
(const __m128i *) (src_row + 2 * src_stride),
(const __m128i *) (src_row + 3 * src_stride),
dst128 + 2, /* b */
dst128 + 1, /* g */
dst128 + 0, /* r */
dst128 + 3); /* a */
dst128 += 4;
src_row += sizeof(__m128i);
}
src += 4 * src_stride;
}
}
static void
lp_tile_b8g8r8a8_unorm_unswizzle_4ub_sse2(const uint8_t * restrict src,
uint8_t * restrict dst, unsigned dst_stride,
unsigned x0, unsigned y0)
{
unsigned int x, y;
const __m128i *src128 = (const __m128i *) src;
dst += y0 * dst_stride;
dst += x0 * sizeof(uint32_t);
for (y = 0; y < TILE_SIZE; y += 4) {
const uint8_t *dst_row = dst;
for (x = 0; x < TILE_SIZE; x += 4) {
unswz4( &src128[2], /* b */
&src128[1], /* g */
&src128[0], /* r */
&src128[3], /* a */
(__m128i *) (dst_row + 0 * dst_stride),
(__m128i *) (dst_row + 1 * dst_stride),
(__m128i *) (dst_row + 2 * dst_stride),
(__m128i *) (dst_row + 3 * dst_stride));
src128 += 4;
dst_row += sizeof(__m128i);;
}
dst += 4 * dst_stride;
}
}
static void
lp_tile_b8g8r8x8_unorm_swizzle_4ub_sse2(uint8_t * restrict dst,
const uint8_t * restrict src, unsigned src_stride,
unsigned x0, unsigned y0)
{
__m128i *dst128 = (__m128i *) dst;
unsigned x, y;
src += y0 * src_stride;
src += x0 * sizeof(uint32_t);
for (y = 0; y < TILE_SIZE; y += 4) {
const uint8_t *src_row = src;
for (x = 0; x < TILE_SIZE; x += 4) {
swz4((const __m128i *) (src_row + 0 * src_stride),
(const __m128i *) (src_row + 1 * src_stride),
(const __m128i *) (src_row + 2 * src_stride),
(const __m128i *) (src_row + 3 * src_stride),
dst128 + 2, /* b */
dst128 + 1, /* g */
dst128 + 0, /* r */
dst128 + 3); /* a */
dst128 += 4;
src_row += sizeof(__m128i);
}
src += 4 * src_stride;
}
}
static void
lp_tile_b8g8r8x8_unorm_unswizzle_4ub_sse2(const uint8_t * restrict src,
uint8_t * restrict dst, unsigned dst_stride,
unsigned x0, unsigned y0)
{
unsigned int x, y;
const __m128i *src128 = (const __m128i *) src;
dst += y0 * dst_stride;
dst += x0 * sizeof(uint32_t);
for (y = 0; y < TILE_SIZE; y += 4) {
const uint8_t *dst_row = dst;
for (x = 0; x < TILE_SIZE; x += 4) {
unswz4( &src128[2], /* b */
&src128[1], /* g */
&src128[0], /* r */
&src128[3], /* a */
(__m128i *) (dst_row + 0 * dst_stride),
(__m128i *) (dst_row + 1 * dst_stride),
(__m128i *) (dst_row + 2 * dst_stride),
(__m128i *) (dst_row + 3 * dst_stride));
src128 += 4;
dst_row += sizeof(__m128i);;
}
dst += 4 * dst_stride;
}
}
#endif /* PIPE_ARCH_SSE */
'''
def generate_swizzle(formats, dst_channel, dst_native_type, dst_suffix):
'''Generate the dispatch function to read pixels from any format'''
for format in formats:
if is_format_supported(format):
generate_format_read(format, dst_channel, dst_native_type, dst_suffix)
print 'void'
print 'lp_tile_swizzle_%s(enum pipe_format format, %s *dst, const void *src, unsigned src_stride, unsigned x, unsigned y)' % (dst_suffix, dst_native_type)
print '{'
print ' void (*func)(%s * restrict dst, const uint8_t * restrict src, unsigned src_stride, unsigned x0, unsigned y0);' % dst_native_type
print '#ifdef DEBUG'
print ' lp_tile_swizzle_count += 1;'
print '#endif'
print ' switch(format) {'
for format in formats:
if is_format_supported(format):
print ' case %s:' % format.name
func_name = 'lp_tile_%s_swizzle_%s' % (format.short_name(), dst_suffix)
if format.name == 'PIPE_FORMAT_B8G8R8A8_UNORM' or format.name == 'PIPE_FORMAT_B8G8R8X8_UNORM':
print '#ifdef PIPE_ARCH_SSE'
print ' func = util_cpu_caps.has_sse2 ? %s_sse2 : %s;' % (func_name, func_name)
print '#else'
print ' func = %s;' % (func_name,)
print '#endif'
else:
print ' func = %s;' % (func_name,)
print ' break;'
print ' default:'
print ' debug_printf("%s: unsupported format %s\\n", __FUNCTION__, util_format_name(format));'
print ' return;'
print ' }'
print ' func(dst, (const uint8_t *)src, src_stride, x, y);'
print '}'
print
def generate_unswizzle(formats, src_channel, src_native_type, src_suffix):
'''Generate the dispatch function to write pixels to any format'''
for format in formats:
if is_format_supported(format):
generate_format_write(format, src_channel, src_native_type, src_suffix)
print 'void'
print 'lp_tile_unswizzle_%s(enum pipe_format format, const %s *src, void *dst, unsigned dst_stride, unsigned x, unsigned y)' % (src_suffix, src_native_type)
print '{'
print ' void (*func)(const %s * restrict src, uint8_t * restrict dst, unsigned dst_stride, unsigned x0, unsigned y0);' % src_native_type
print '#ifdef DEBUG'
print ' lp_tile_unswizzle_count += 1;'
print '#endif'
print ' switch(format) {'
for format in formats:
if is_format_supported(format):
print ' case %s:' % format.name
func_name = 'lp_tile_%s_unswizzle_%s' % (format.short_name(), src_suffix)
if format.name == 'PIPE_FORMAT_B8G8R8A8_UNORM' or format.name == 'PIPE_FORMAT_B8G8R8X8_UNORM':
print '#ifdef PIPE_ARCH_SSE'
print ' func = util_cpu_caps.has_sse2 ? %s_sse2 : %s;' % (func_name, func_name)
print '#else'
print ' func = %s;' % (func_name,)
print '#endif'
else:
print ' func = %s;' % (func_name,)
print ' break;'
print ' default:'
print ' debug_printf("%s: unsupported format %s\\n", __FUNCTION__, util_format_name(format));'
print ' return;'
print ' }'
print ' func(src, (uint8_t *)dst, dst_stride, x, y);'
print '}'
print
def main():
formats = []
for arg in sys.argv[1:]:
formats.extend(parse(arg))
print '/* This file is autogenerated by lp_tile_soa.py from u_format.csv. Do not edit directly. */'
print
# This will print the copyright message on the top of this file
print CopyRight.strip()
print
print '#include "pipe/p_compiler.h"'
print '#include "util/u_math.h"'
print '#include "util/u_format.h"'
print '#include "util/u_format_r11g11b10f.h"'
print '#include "util/u_format_rgb9e5.h"'
print '#include "util/u_half.h"'
print '#include "util/u_cpu_detect.h"'
print '#include "lp_tile_soa.h"'
print
print '#ifdef DEBUG'
print 'unsigned lp_tile_unswizzle_count = 0;'
print 'unsigned lp_tile_swizzle_count = 0;'
print '#endif'
print
print 'const unsigned char'
print 'tile_offset[TILE_VECTOR_HEIGHT][TILE_VECTOR_WIDTH] = {'
print ' { 0, 1, 4, 5},'
print ' { 2, 3, 6, 7},'
print ' { 8, 9, 12, 13},'
print ' { 10, 11, 14, 15}'
print '};'
print
print '/* Note: these lookup tables could be replaced with some'
print ' * bit-twiddling code, but this is a little faster.'
print ' */'
print 'static unsigned tile_x_offset[TILE_VECTOR_WIDTH * TILE_VECTOR_HEIGHT] = {'
print ' 0, 1, 0, 1, 2, 3, 2, 3,'
print ' 0, 1, 0, 1, 2, 3, 2, 3'
print '};'
print
print 'static unsigned tile_y_offset[TILE_VECTOR_WIDTH * TILE_VECTOR_HEIGHT] = {'
print ' 0, 0, 1, 1, 0, 0, 1, 1,'
print ' 2, 2, 3, 3, 2, 2, 3, 3'
print '};'
print
generate_sse2()
channel = Channel(UNSIGNED, True, False, 8)
native_type = 'uint8_t'
suffix = '4ub'
generate_swizzle(formats, channel, native_type, suffix)
generate_unswizzle(formats, channel, native_type, suffix)
if __name__ == '__main__':
main()