src/gallium/drivers/i965simple/brw_wm_iz.c

   1 /*
   2  Copyright (C) Intel Corp.  2006.  All Rights Reserved.
   3  Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
   4  develop this 3D driver.
   5
   6  Permission is hereby granted, free of charge, to any person obtaining
   7  a copy of this software and associated documentation files (the
   8  "Software"), to deal in the Software without restriction, including
   9  without limitation the rights to use, copy, modify, merge, publish,
  10  distribute, sublicense, and/or sell copies of the Software, and to
  11  permit persons to whom the Software is furnished to do so, subject to
  12  the following conditions:
  13
  14  The above copyright notice and this permission notice (including the
  15  next paragraph) shall be included in all copies or substantial
  16  portions of the Software.
  17
  18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26  **********************************************************************/
  27  /*
  28   * Authors:
  29   *   Keith Whitwell <keith@tungstengraphics.com>
  30   */
  31
  32 #include "brw_wm.h"
  33
  34
  35 #undef P                        /* prompted depth */
  36 #undef C                        /* computed */
  37 #undef N                        /* non-promoted? */
  38
  39 #define P 0
  40 #define C 1
  41 #define N 2
  42
  43 const struct {
  44    unsigned mode:2;
  45    unsigned sd_present:1;
  46    unsigned sd_to_rt:1;
  47    unsigned dd_present:1;
  48    unsigned ds_present:1;
  49 } wm_iz_table[IZ_BIT_MAX] =
  50 {
  51  { P, 0, 0, 0, 0 },
  52  { P, 0, 0, 0, 0 },
  53  { C, 0, 1, 0, 0 },
  54  { C, 0, 1, 0, 0 },
  55  { C, 1, 1, 0, 0 },
  56  { C, 1, 1, 0, 0 },
  57  { C, 0, 1, 0, 0 },
  58  { C, 0, 1, 0, 0 },
  59  { C, 1, 1, 1, 0 },
  60  { C, 1, 1, 1, 0 },
  61  { C, 0, 1, 1, 0 },
  62  { C, 0, 1, 1, 0 },
  63  { C, 1, 1, 1, 0 },
  64  { C, 1, 1, 1, 0 },
  65  { C, 0, 1, 1, 0 },
  66  { C, 0, 1, 1, 0 },
  67  { P, 0, 0, 0, 0 },
  68  { P, 0, 0, 0, 0 },
  69  { C, 0, 1, 0, 0 },
  70  { C, 0, 1, 0, 0 },
  71  { C, 1, 1, 0, 0 },
  72  { C, 1, 1, 0, 0 },
  73  { C, 0, 1, 0, 0 },
  74  { C, 0, 1, 0, 0 },
  75  { C, 1, 1, 1, 0 },
  76  { C, 1, 1, 1, 0 },
  77  { C, 0, 1, 1, 0 },
  78  { C, 0, 1, 1, 0 },
  79  { C, 1, 1, 1, 0 },
  80  { C, 1, 1, 1, 0 },
  81  { C, 0, 1, 1, 0 },
  82  { C, 0, 1, 1, 0 },
  83  { C, 0, 0, 0, 1 },
  84  { C, 0, 0, 0, 1 },
  85  { C, 0, 1, 0, 1 },
  86  { C, 0, 1, 0, 1 },
  87  { C, 1, 1, 0, 1 },
  88  { C, 1, 1, 0, 1 },
  89  { C, 0, 1, 0, 1 },
  90  { C, 0, 1, 0, 1 },
  91  { C, 1, 1, 1, 1 },
  92  { C, 1, 1, 1, 1 },
  93  { C, 0, 1, 1, 1 },
  94  { C, 0, 1, 1, 1 },
  95  { C, 1, 1, 1, 1 },
  96  { C, 1, 1, 1, 1 },
  97  { C, 0, 1, 1, 1 },
  98  { C, 0, 1, 1, 1 },
  99  { C, 0, 0, 0, 1 },
 100  { C, 0, 0, 0, 1 },
 101  { C, 0, 1, 0, 1 },
 102  { C, 0, 1, 0, 1 },
 103  { C, 1, 1, 0, 1 },
 104  { C, 1, 1, 0, 1 },
 105  { C, 0, 1, 0, 1 },
 106  { C, 0, 1, 0, 1 },
 107  { C, 1, 1, 1, 1 },
 108  { C, 1, 1, 1, 1 },
 109  { C, 0, 1, 1, 1 },
 110  { C, 0, 1, 1, 1 },
 111  { C, 1, 1, 1, 1 },
 112  { C, 1, 1, 1, 1 },
 113  { C, 0, 1, 1, 1 },
 114  { C, 0, 1, 1, 1 },
 115  { P, 0, 0, 0, 0 },
 116  { P, 0, 0, 0, 0 },
 117  { P, 0, 0, 0, 0 },
 118  { P, 0, 0, 0, 0 },
 119  { P, 0, 0, 0, 0 },
 120  { N, 1, 1, 0, 0 },
 121  { N, 0, 1, 0, 0 },
 122  { N, 0, 1, 0, 0 },
 123  { P, 0, 0, 0, 0 },
 124  { P, 0, 0, 0, 0 },
 125  { C, 0, 1, 1, 0 },
 126  { C, 0, 1, 1, 0 },
 127  { P, 0, 0, 0, 0 },
 128  { N, 1, 1, 0, 0 },
 129  { C, 0, 1, 1, 0 },
 130  { C, 0, 1, 1, 0 },
 131  { P, 0, 0, 0, 0 },
 132  { P, 0, 0, 0, 0 },
 133  { P, 0, 0, 0, 0 },
 134  { P, 0, 0, 0, 0 },
 135  { P, 0, 0, 0, 0 },
 136  { N, 1, 1, 0, 0 },
 137  { N, 0, 1, 0, 0 },
 138  { N, 0, 1, 0, 0 },
 139  { P, 0, 0, 0, 0 },
 140  { P, 0, 0, 0, 0 },
 141  { C, 0, 1, 1, 0 },
 142  { C, 0, 1, 1, 0 },
 143  { P, 0, 0, 0, 0 },
 144  { N, 1, 1, 0, 0 },
 145  { C, 0, 1, 1, 0 },
 146  { C, 0, 1, 1, 0 },
 147  { P, 0, 0, 0, 0 },
 148  { P, 0, 0, 0, 0 },
 149  { P, 0, 0, 0, 0 },
 150  { P, 0, 0, 0, 0 },
 151  { P, 0, 0, 0, 0 },
 152  { N, 1, 1, 0, 1 },
 153  { N, 0, 1, 0, 1 },
 154  { N, 0, 1, 0, 1 },
 155  { P, 0, 0, 0, 0 },
 156  { P, 0, 0, 0, 0 },
 157  { C, 0, 1, 1, 1 },
 158  { C, 0, 1, 1, 1 },
 159  { P, 0, 0, 0, 0 },
 160  { N, 1, 1, 0, 1 },
 161  { C, 0, 1, 1, 1 },
 162  { C, 0, 1, 1, 1 },
 163  { P, 0, 0, 0, 0 },
 164  { C, 0, 0, 0, 1 },
 165  { P, 0, 0, 0, 0 },
 166  { C, 0, 1, 0, 1 },
 167  { P, 0, 0, 0, 0 },
 168  { C, 1, 1, 0, 1 },
 169  { C, 0, 1, 0, 1 },
 170  { C, 0, 1, 0, 1 },
 171  { P, 0, 0, 0, 0 },
 172  { C, 1, 1, 1, 1 },
 173  { C, 0, 1, 1, 1 },
 174  { C, 0, 1, 1, 1 },
 175  { P, 0, 0, 0, 0 },
 176  { C, 1, 1, 1, 1 },
 177  { C, 0, 1, 1, 1 },
 178  { C, 0, 1, 1, 1 }
 179 };
 180
 181 void brw_wm_lookup_iz( unsigned line_aa,
 182                        unsigned lookup,
 183                        struct brw_wm_prog_key *key )
 184 {
 185    unsigned reg = 2;
 186
 187    assert (lookup < IZ_BIT_MAX);
 188
 189    if (lookup & IZ_PS_COMPUTES_DEPTH_BIT)
 190       key->computes_depth = 1;
 191
 192    if (wm_iz_table[lookup].sd_present) {
 193       key->source_depth_reg = reg;
 194       reg += 2;
 195    }
 196
 197    if (wm_iz_table[lookup].sd_to_rt)
 198       key->source_depth_to_render_target = 1;
 199
 200    if (wm_iz_table[lookup].ds_present || line_aa != AA_NEVER) {
 201       key->aa_dest_stencil_reg = reg;
 202       key->runtime_check_aads_emit = (!wm_iz_table[lookup].ds_present &&
 203                                       line_aa == AA_SOMETIMES);
 204       reg++;
 205    }
 206
 207    if (wm_iz_table[lookup].dd_present) {
 208       key->dest_depth_reg = reg;
 209       reg+=2;
 210    }
 211
 212    key->nr_depth_regs = (reg+1)/2;
 213 }
 214