src/mesa/swrast_setup/ss_triangle.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  3.5
   4  *
   5  * Copyright (C) 1999  Brian Paul   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  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Keith Whitwell <keithw@valinux.com>
  26  */
  27
  28 #include "glheader.h"
  29 #include "macros.h"
  30 #include "types.h"
  31
  32 #include "tnl/t_context.h"
  33
  34 #include "ss_triangle.h"
  35 #include "ss_context.h"
  36
  37 #define SS_FLAT_BIT         0x1
  38 #define SS_OFFSET_BIT       0x2
  39 #define SS_TWOSIDE_BIT      0x4
  40 #define SS_UNFILLED_BIT     0x10
  41 #define SS_COPY_EXTRAS      0x20 /* optimization */
  42 #define SS_MAX_TRIFUNC      0x40
  43
  44 static triangle_func tri_tab[SS_MAX_TRIFUNC];
  45 static line_func     line_tab[SS_MAX_TRIFUNC];
  46 static points_func   points_tab[SS_MAX_TRIFUNC];
  47 static quad_func     quad_tab[SS_MAX_TRIFUNC];
  48
  49
  50 #define SS_COLOR(a,b) COPY_4UBV(a,b)
  51 #define SS_SPEC(a,b) COPY_4UBV(a,b)
  52 #define SS_IND(a,b) (a = b)
  53
  54 #define IND (0)
  55 #define TAG(x) x
  56 #include "ss_tritmp.h"
  57
  58 #define IND (SS_FLAT_BIT)
  59 #define TAG(x) x##_flat
  60 #include "ss_tritmp.h"
  61
  62 #define IND (SS_OFFSET_BIT)
  63 #define TAG(x) x##_offset
  64 #include "ss_tritmp.h"
  65
  66 #define IND (SS_FLAT_BIT|SS_OFFSET_BIT)
  67 #define TAG(x) x##_flat_offset
  68 #include "ss_tritmp.h"
  69
  70 #define IND (SS_TWOSIDE_BIT)
  71 #define TAG(x) x##_twoside
  72 #include "ss_tritmp.h"
  73
  74 #define IND (SS_FLAT_BIT|SS_TWOSIDE_BIT)
  75 #define TAG(x) x##_flat_twoside
  76 #include "ss_tritmp.h"
  77
  78 #define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT)
  79 #define TAG(x) x##_offset_twoside
  80 #include "ss_tritmp.h"
  81
  82 #define IND (SS_FLAT_BIT|SS_OFFSET_BIT|SS_TWOSIDE_BIT)
  83 #define TAG(x) x##_flat_offset_twoside
  84 #include "ss_tritmp.h"
  85
  86 #define IND (SS_UNFILLED_BIT)
  87 #define TAG(x) x##_unfilled
  88 #include "ss_tritmp.h"
  89
  90 #define IND (SS_FLAT_BIT|SS_UNFILLED_BIT)
  91 #define TAG(x) x##_flat_unfilled
  92 #include "ss_tritmp.h"
  93
  94 #define IND (SS_OFFSET_BIT|SS_UNFILLED_BIT)
  95 #define TAG(x) x##_offset_unfilled
  96 #include "ss_tritmp.h"
  97
  98 #define IND (SS_FLAT_BIT|SS_OFFSET_BIT|SS_UNFILLED_BIT)
  99 #define TAG(x) x##_flat_offset_unfilled
 100 #include "ss_tritmp.h"
 101
 102 #define IND (SS_TWOSIDE_BIT|SS_UNFILLED_BIT)
 103 #define TAG(x) x##_twoside_unfilled
 104 #include "ss_tritmp.h"
 105
 106 #define IND (SS_FLAT_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT)
 107 #define TAG(x) x##_flat_twoside_unfilled
 108 #include "ss_tritmp.h"
 109
 110 #define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT)
 111 #define TAG(x) x##_offset_twoside_unfilled
 112 #include "ss_tritmp.h"
 113
 114 #define IND (SS_FLAT_BIT|SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT)
 115 #define TAG(x) x##_flat_offset_twoside_unfilled
 116 #include "ss_tritmp.h"
 117
 118 #define IND (0|SS_COPY_EXTRAS)
 119 #define TAG(x) x##_spec
 120 #include "ss_tritmp.h"
 121
 122 #define IND (SS_FLAT_BIT|SS_COPY_EXTRAS)
 123 #define TAG(x) x##_flat_spec
 124 #include "ss_tritmp.h"
 125
 126 #define IND (SS_OFFSET_BIT|SS_COPY_EXTRAS)
 127 #define TAG(x) x##_offset_spec
 128 #include "ss_tritmp.h"
 129
 130 #define IND (SS_FLAT_BIT|SS_OFFSET_BIT|SS_COPY_EXTRAS)
 131 #define TAG(x) x##_flat_offset_spec
 132 #include "ss_tritmp.h"
 133
 134 #define IND (SS_TWOSIDE_BIT|SS_COPY_EXTRAS)
 135 #define TAG(x) x##_twoside_spec
 136 #include "ss_tritmp.h"
 137
 138 #define IND (SS_FLAT_BIT|SS_TWOSIDE_BIT|SS_COPY_EXTRAS)
 139 #define TAG(x) x##_flat_twoside_spec
 140 #include "ss_tritmp.h"
 141
 142 #define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_COPY_EXTRAS)
 143 #define TAG(x) x##_offset_twoside_spec
 144 #include "ss_tritmp.h"
 145
 146 #define IND (SS_FLAT_BIT|SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_COPY_EXTRAS)
 147 #define TAG(x) x##_flat_offset_twoside_spec
 148 #include "ss_tritmp.h"
 149
 150 #define IND (SS_UNFILLED_BIT|SS_COPY_EXTRAS)
 151 #define TAG(x) x##_unfilled_spec
 152 #include "ss_tritmp.h"
 153
 154 #define IND (SS_FLAT_BIT|SS_UNFILLED_BIT|SS_COPY_EXTRAS)
 155 #define TAG(x) x##_flat_unfilled_spec
 156 #include "ss_tritmp.h"
 157
 158 #define IND (SS_OFFSET_BIT|SS_UNFILLED_BIT|SS_COPY_EXTRAS)
 159 #define TAG(x) x##_offset_unfilled_spec
 160 #include "ss_tritmp.h"
 161
 162 #define IND (SS_FLAT_BIT|SS_OFFSET_BIT|SS_UNFILLED_BIT|SS_COPY_EXTRAS)
 163 #define TAG(x) x##_flat_offset_unfilled_spec
 164 #include "ss_tritmp.h"
 165
 166 #define IND (SS_TWOSIDE_BIT|SS_UNFILLED_BIT|SS_COPY_EXTRAS)
 167 #define TAG(x) x##_twoside_unfilled_spec
 168 #include "ss_tritmp.h"
 169
 170 #define IND (SS_FLAT_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT|SS_COPY_EXTRAS)
 171 #define TAG(x) x##_flat_twoside_unfilled_spec
 172 #include "ss_tritmp.h"
 173
 174 #define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT|SS_COPY_EXTRAS)
 175 #define TAG(x) x##_offset_twoside_unfilled_spec
 176 #include "ss_tritmp.h"
 177
 178 #define IND (SS_FLAT_BIT|SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT|SS_COPY_EXTRAS)
 179 #define TAG(x) x##_flat_offset_twoside_unfilled_spec
 180 #include "ss_tritmp.h"
 181
 182
 183 void _swsetup_trifuncs_init( GLcontext *ctx )
 184 {
 185    (void) ctx;
 186
 187    init();
 188    init_flat();
 189    init_offset();
 190    init_flat_offset();
 191    init_twoside();
 192    init_flat_twoside();
 193    init_offset_twoside();
 194    init_flat_offset_twoside();
 195    init_unfilled();
 196    init_flat_unfilled();
 197    init_offset_unfilled();
 198    init_flat_offset_unfilled();
 199    init_twoside_unfilled();
 200    init_flat_twoside_unfilled();
 201    init_offset_twoside_unfilled();
 202    init_flat_offset_twoside_unfilled();
 203
 204    init_spec();
 205    init_flat_spec();
 206    init_offset_spec();
 207    init_flat_offset_spec();
 208    init_twoside_spec();
 209    init_flat_twoside_spec();
 210    init_offset_twoside_spec();
 211    init_flat_offset_twoside_spec();
 212    init_unfilled_spec();
 213    init_flat_unfilled_spec();
 214    init_offset_unfilled_spec();
 215    init_flat_offset_unfilled_spec();
 216    init_twoside_unfilled_spec();
 217    init_flat_twoside_unfilled_spec();
 218    init_offset_twoside_unfilled_spec();
 219    init_flat_offset_twoside_unfilled_spec();
 220 }
 221
 222
 223 void _swsetup_choose_trifuncs( GLcontext *ctx )
 224 {
 225    SScontext *swsetup = SWSETUP_CONTEXT(ctx);
 226    GLuint ind = 0;
 227
 228    if (ctx->Light.ShadeModel == GL_FLAT)
 229       ind |= SS_FLAT_BIT;
 230
 231    if (ctx->Polygon._OffsetAny)
 232       ind |= SS_OFFSET_BIT;
 233
 234    if (ctx->Light.Enabled && ctx->Light.Model.TwoSide)
 235       ind |= SS_TWOSIDE_BIT;
 236
 237    if (ctx->Polygon._Unfilled)
 238       ind |= SS_UNFILLED_BIT;
 239
 240    if ((ctx->_TriangleCaps & DD_SEPERATE_SPECULAR) ||
 241        ctx->RenderMode == GL_SELECT ||
 242        !ctx->Visual.RGBAflag)
 243       ind |= SS_COPY_EXTRAS;
 244
 245    swsetup->Triangle = tri_tab[ind];
 246    swsetup->Line = line_tab[ind];
 247    swsetup->Points = points_tab[ind];
 248    swsetup->Quad = quad_tab[ind];
 249 }
 250