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#!/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
* on 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 THEIR 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.
*/
'''
GENERATE, UBYTE, USHORT, UINT = 'generate', 'ubyte', 'ushort', 'uint'
FIRST, LAST = 'first', 'last'
INTYPES = (GENERATE, UBYTE, USHORT, UINT)
OUTTYPES = (USHORT, UINT)
PRIMS=('tris',
'trifan',
'tristrip',
'quads',
'quadstrip',
'polygon')
LONGPRIMS=('PIPE_PRIM_TRIANGLES',
'PIPE_PRIM_TRIANGLE_FAN',
'PIPE_PRIM_TRIANGLE_STRIP',
'PIPE_PRIM_QUADS',
'PIPE_PRIM_QUAD_STRIP',
'PIPE_PRIM_POLYGON')
longprim = dict(zip(PRIMS, LONGPRIMS))
intype_idx = dict(ubyte='IN_UBYTE', ushort='IN_USHORT', uint='IN_UINT')
outtype_idx = dict(ushort='OUT_USHORT', uint='OUT_UINT')
def prolog():
print '''/* File automatically generated by u_unfilled_gen.py */'''
print copyright
print r'''
/**
* @file
* Functions to translate and generate index lists
*/
#include "indices/u_indices.h"
#include "indices/u_indices_priv.h"
#include "pipe/p_compiler.h"
#include "util/u_debug.h"
#include "pipe/p_defines.h"
#include "util/u_memory.h"
static unsigned out_size_idx( unsigned index_size )
{
switch (index_size) {
case 4: return OUT_UINT;
case 2: return OUT_USHORT;
default: assert(0); return OUT_USHORT;
}
}
static unsigned in_size_idx( unsigned index_size )
{
switch (index_size) {
case 4: return IN_UINT;
case 2: return IN_USHORT;
case 1: return IN_UBYTE;
default: assert(0); return IN_UBYTE;
}
}
static u_generate_func generate_line[OUT_COUNT][PRIM_COUNT];
static u_translate_func translate_line[IN_COUNT][OUT_COUNT][PRIM_COUNT];
'''
def vert( intype, outtype, v0 ):
if intype == GENERATE:
return '(' + outtype + ')(' + v0 + ')'
else:
return '(' + outtype + ')in[' + v0 + ']'
def line( intype, outtype, ptr, v0, v1 ):
print ' (' + ptr + ')[0] = ' + vert( intype, outtype, v0 ) + ';'
print ' (' + ptr + ')[1] = ' + vert( intype, outtype, v1 ) + ';'
# XXX: have the opportunity here to avoid over-drawing shared lines in
# tristrips, fans, etc, by integrating this into the calling functions
# and only emitting each line at most once.
#
def do_tri( intype, outtype, ptr, v0, v1, v2 ):
line( intype, outtype, ptr, v0, v1 )
line( intype, outtype, ptr + '+2', v1, v2 )
line( intype, outtype, ptr + '+4', v2, v0 )
def do_quad( intype, outtype, ptr, v0, v1, v2, v3 ):
line( intype, outtype, ptr, v0, v1 )
line( intype, outtype, ptr + '+2', v1, v2 )
line( intype, outtype, ptr + '+4', v2, v3 )
line( intype, outtype, ptr + '+6', v3, v0 )
def name(intype, outtype, prim):
if intype == GENERATE:
return 'generate_' + prim + '_' + outtype
else:
return 'translate_' + prim + '_' + intype + '2' + outtype
def preamble(intype, outtype, prim):
print 'static void ' + name( intype, outtype, prim ) + '('
if intype != GENERATE:
print ' const void * _in,'
print ' unsigned nr,'
print ' void *_out )'
print '{'
if intype != GENERATE:
print ' const ' + intype + '*in = (const ' + intype + '*)_in;'
print ' ' + outtype + ' *out = (' + outtype + '*)_out;'
print ' unsigned i, j;'
print ' (void)j;'
def postamble():
print '}'
def tris(intype, outtype):
preamble(intype, outtype, prim='tris')
print ' for (j = i = 0; j < nr; j+=6, i+=3) { '
do_tri( intype, outtype, 'out+j', 'i', 'i+1', 'i+2' );
print ' }'
postamble()
def tristrip(intype, outtype):
preamble(intype, outtype, prim='tristrip')
print ' for (j = i = 0; j < nr; j+=6, i++) { '
do_tri( intype, outtype, 'out+j', 'i', 'i+1/*+(i&1)*/', 'i+2/*-(i&1)*/' );
print ' }'
postamble()
def trifan(intype, outtype):
preamble(intype, outtype, prim='trifan')
print ' for (j = i = 0; j < nr; j+=6, i++) { '
do_tri( intype, outtype, 'out+j', '0', 'i+1', 'i+2' );
print ' }'
postamble()
def polygon(intype, outtype):
preamble(intype, outtype, prim='polygon')
print ' for (j = i = 0; j < nr; j+=6, i++) { '
do_tri( intype, outtype, 'out+j', '0', 'i+1', 'i+2' );
print ' }'
postamble()
def quads(intype, outtype):
preamble(intype, outtype, prim='quads')
print ' for (j = i = 0; j < nr; j+=8, i+=4) { '
do_quad( intype, outtype, 'out+j', 'i+0', 'i+1', 'i+2', 'i+3' );
print ' }'
postamble()
def quadstrip(intype, outtype):
preamble(intype, outtype, prim='quadstrip')
print ' for (j = i = 0; j < nr; j+=8, i+=2) { '
do_quad( intype, outtype, 'out+j', 'i+2', 'i+0', 'i+1', 'i+3' );
print ' }'
postamble()
def emit_funcs():
for intype in INTYPES:
for outtype in OUTTYPES:
tris(intype, outtype)
tristrip(intype, outtype)
trifan(intype, outtype)
quads(intype, outtype)
quadstrip(intype, outtype)
polygon(intype, outtype)
def init(intype, outtype, prim):
if intype == GENERATE:
print ('generate_line[' +
outtype_idx[outtype] +
'][' + longprim[prim] +
'] = ' + name( intype, outtype, prim ) + ';')
else:
print ('translate_line[' +
intype_idx[intype] +
'][' + outtype_idx[outtype] +
'][' + longprim[prim] +
'] = ' + name( intype, outtype, prim ) + ';')
def emit_all_inits():
for intype in INTYPES:
for outtype in OUTTYPES:
for prim in PRIMS:
init(intype, outtype, prim)
def emit_init():
print 'void u_unfilled_init( void )'
print '{'
print ' static int firsttime = 1;'
print ' if (!firsttime) return;'
print ' firsttime = 0;'
emit_all_inits()
print '}'
def epilog():
print '#include "indices/u_unfilled_indices.c"'
def main():
prolog()
emit_funcs()
emit_init()
epilog()
if __name__ == '__main__':
main()
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