src/gallium/auxiliary/indices/u_unfilled_gen.py

   1 #!/usr/bin/env python
   2 copyright = '''
   3 /*
   4  * Copyright 2009 VMware, Inc.
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * on the rights to use, copy, modify, merge, publish, distribute, sub
  11  * license, and/or sell copies of the Software, and to permit persons to whom
  12  * the Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the next
  15  * paragraph) shall be included in all copies or substantial portions of the
  16  * Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  21  * VMWARE AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26 '''
  27
  28 GENERATE, UBYTE, USHORT, UINT = 'generate', 'ubyte', 'ushort', 'uint'
  29 FIRST, LAST = 'first', 'last'
  30
  31 INTYPES = (GENERATE, UBYTE, USHORT, UINT)
  32 OUTTYPES = (USHORT, UINT)
  33 PRIMS=('tris',
  34        'trifan',
  35        'tristrip',
  36        'quads',
  37        'quadstrip',
  38        'polygon',
  39        'trisadj',
  40        'tristripadj')
  41
  42 LONGPRIMS=('PIPE_PRIM_TRIANGLES',
  43            'PIPE_PRIM_TRIANGLE_FAN',
  44            'PIPE_PRIM_TRIANGLE_STRIP',
  45            'PIPE_PRIM_QUADS',
  46            'PIPE_PRIM_QUAD_STRIP',
  47            'PIPE_PRIM_POLYGON',
  48            'PIPE_PRIM_TRIANGLES_ADJACENCY',
  49            'PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY')
  50
  51 longprim = dict(zip(PRIMS, LONGPRIMS))
  52 intype_idx = dict(ubyte='IN_UBYTE', ushort='IN_USHORT', uint='IN_UINT')
  53 outtype_idx = dict(ushort='OUT_USHORT', uint='OUT_UINT')
  54
  55
  56 def prolog():
  57     print '''/* File automatically generated by u_unfilled_gen.py */'''
  58     print copyright
  59     print r'''
  60
  61 /**
  62  * @file
  63  * Functions to translate and generate index lists
  64  */
  65
  66 #include "indices/u_indices.h"
  67 #include "indices/u_indices_priv.h"
  68 #include "pipe/p_compiler.h"
  69 #include "util/u_debug.h"
  70 #include "pipe/p_defines.h"
  71 #include "util/u_memory.h"
  72
  73
  74 static unsigned out_size_idx( unsigned index_size )
  75 {
  76    switch (index_size) {
  77    case 4: return OUT_UINT;
  78    case 2: return OUT_USHORT;
  79    default: assert(0); return OUT_USHORT;
  80    }
  81 }
  82
  83 static unsigned in_size_idx( unsigned index_size )
  84 {
  85    switch (index_size) {
  86    case 4: return IN_UINT;
  87    case 2: return IN_USHORT;
  88    case 1: return IN_UBYTE;
  89    default: assert(0); return IN_UBYTE;
  90    }
  91 }
  92
  93
  94 static u_generate_func generate_line[OUT_COUNT][PRIM_COUNT];
  95 static u_translate_func translate_line[IN_COUNT][OUT_COUNT][PRIM_COUNT];
  96
  97 '''
  98
  99 def vert( intype, outtype, v0 ):
 100     if intype == GENERATE:
 101         return '(' + outtype + ')(' + v0 + ')'
 102     else:
 103         return '(' + outtype + ')in[' + v0 + ']'
 104
 105 def line( intype, outtype, ptr, v0, v1 ):
 106     print '      (' + ptr + ')[0] = ' + vert( intype, outtype, v0 ) + ';'
 107     print '      (' + ptr + ')[1] = ' + vert( intype, outtype, v1 ) + ';'
 108
 109 # XXX: have the opportunity here to avoid over-drawing shared lines in
 110 # tristrips, fans, etc, by integrating this into the calling functions
 111 # and only emitting each line at most once.
 112 #
 113 def do_tri( intype, outtype, ptr, v0, v1, v2 ):
 114     line( intype, outtype, ptr, v0, v1 )
 115     line( intype, outtype, ptr + '+2', v1, v2 )
 116     line( intype, outtype, ptr + '+4', v2, v0 )
 117
 118 def do_quad( intype, outtype, ptr, v0, v1, v2, v3 ):
 119     line( intype, outtype, ptr, v0, v1 )
 120     line( intype, outtype, ptr + '+2', v1, v2 )
 121     line( intype, outtype, ptr + '+4', v2, v3 )
 122     line( intype, outtype, ptr + '+6', v3, v0 )
 123
 124 def name(intype, outtype, prim):
 125     if intype == GENERATE:
 126         return 'generate_' + prim + '_' + outtype
 127     else:
 128         return 'translate_' + prim + '_' + intype + '2' + outtype
 129
 130 def preamble(intype, outtype, prim):
 131     print 'static void ' + name( intype, outtype, prim ) + '('
 132     if intype != GENERATE:
 133         print '    const void * _in,'
 134     print '    unsigned start,'
 135     if intype != GENERATE:
 136         print '    unsigned in_nr,'
 137     print '    unsigned out_nr,'
 138     if intype != GENERATE:
 139         print '    unsigned restart_index,'
 140     print '    void *_out )'
 141     print '{'
 142     if intype != GENERATE:
 143         print '  const ' + intype + '*in = (const ' + intype + '*)_in;'
 144     print '  ' + outtype + ' *out = (' + outtype + '*)_out;'
 145     print '  unsigned i, j;'
 146     print '  (void)j;'
 147
 148 def postamble():
 149     print '}'
 150
 151
 152 def tris(intype, outtype):
 153     preamble(intype, outtype, prim='tris')
 154     print '  for (i = start, j = 0; j < out_nr; j+=6, i+=3) { '
 155     do_tri( intype, outtype, 'out+j',  'i', 'i+1', 'i+2' );
 156     print '   }'
 157     postamble()
 158
 159
 160 def tristrip(intype, outtype):
 161     preamble(intype, outtype, prim='tristrip')
 162     print '  for (i = start, j = 0; j < out_nr; j+=6, i++) { '
 163     do_tri( intype, outtype, 'out+j',  'i', 'i+1/*+(i&1)*/', 'i+2/*-(i&1)*/' );
 164     print '   }'
 165     postamble()
 166
 167
 168 def trifan(intype, outtype):
 169     preamble(intype, outtype, prim='trifan')
 170     print '  for (i = start, j = 0; j < out_nr; j+=6, i++) { '
 171     do_tri( intype, outtype, 'out+j',  '0', 'i+1', 'i+2' );
 172     print '   }'
 173     postamble()
 174
 175
 176
 177 def polygon(intype, outtype):
 178     preamble(intype, outtype, prim='polygon')
 179     print '  for (i = start, j = 0; j < out_nr; j+=2, i++) { '
 180     line( intype, outtype, 'out+j', 'i', '(i+1)%(out_nr/2)' )
 181     print '   }'
 182     postamble()
 183
 184
 185 def quads(intype, outtype):
 186     preamble(intype, outtype, prim='quads')
 187     print '  for (i = start, j = 0; j < out_nr; j+=8, i+=4) { '
 188     do_quad( intype, outtype, 'out+j', 'i+0', 'i+1', 'i+2', 'i+3' );
 189     print '   }'
 190     postamble()
 191
 192
 193 def quadstrip(intype, outtype):
 194     preamble(intype, outtype, prim='quadstrip')
 195     print '  for (i = start, j = 0; j < out_nr; j+=8, i+=2) { '
 196     do_quad( intype, outtype, 'out+j', 'i+2', 'i+0', 'i+1', 'i+3' );
 197     print '   }'
 198     postamble()
 199
 200
 201 def trisadj(intype, outtype):
 202     preamble(intype, outtype, prim='trisadj')
 203     print '  for (i = start, j = 0; j < out_nr; j+=6, i+=6) { '
 204     do_tri( intype, outtype, 'out+j',  'i', 'i+2', 'i+4' );
 205     print '   }'
 206     postamble()
 207
 208
 209 def tristripadj(intype, outtype):
 210     preamble(intype, outtype, prim='tristripadj')
 211     print '  for (i = start, j = 0; j < out_nr; j+=6, i+=2) { '
 212     do_tri( intype, outtype, 'out+j',  'i', 'i+2', 'i+4' );
 213     print '   }'
 214     postamble()
 215
 216
 217 def emit_funcs():
 218     for intype in INTYPES:
 219         for outtype in OUTTYPES:
 220             tris(intype, outtype)
 221             tristrip(intype, outtype)
 222             trifan(intype, outtype)
 223             quads(intype, outtype)
 224             quadstrip(intype, outtype)
 225             polygon(intype, outtype)
 226             trisadj(intype, outtype)
 227             tristripadj(intype, outtype)
 228
 229 def init(intype, outtype, prim):
 230     if intype == GENERATE:
 231         print ('generate_line[' +
 232                outtype_idx[outtype] +
 233                '][' + longprim[prim] +
 234                '] = ' + name( intype, outtype, prim ) + ';')
 235     else:
 236         print ('translate_line[' +
 237                intype_idx[intype] +
 238                '][' + outtype_idx[outtype] +
 239                '][' + longprim[prim] +
 240                '] = ' + name( intype, outtype, prim ) + ';')
 241
 242
 243 def emit_all_inits():
 244     for intype in INTYPES:
 245         for outtype in OUTTYPES:
 246             for prim in PRIMS:
 247                 init(intype, outtype, prim)
 248
 249 def emit_init():
 250     print 'void u_unfilled_init( void )'
 251     print '{'
 252     print '  static int firsttime = 1;'
 253     print '  if (!firsttime) return;'
 254     print '  firsttime = 0;'
 255     emit_all_inits()
 256     print '}'
 257
 258
 259
 260
 261 def epilog():
 262     print '#include "indices/u_unfilled_indices.c"'
 263
 264
 265 def main():
 266     prolog()
 267     emit_funcs()
 268     emit_init()
 269     epilog()
 270
 271
 272 if __name__ == '__main__':
 273     main()