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 "ss_triangle.h"
  33 #include "ss_context.h"
  34
  35 #define SS_FLAT_BIT         0x1
  36 #define SS_OFFSET_BIT       0x2
  37 #define SS_TWOSIDE_BIT      0x4
  38 #define SS_UNFILLED_BIT     0x10
  39 #define SS_COPY_EXTRAS      0x20 /* optimization */
  40 #define SS_MAX_TRIFUNC      0x40
  41
  42 static triangle_func tri_tab[SS_MAX_TRIFUNC];
  43 static line_func     line_tab[SS_MAX_TRIFUNC];
  44 static points_func   points_tab[SS_MAX_TRIFUNC];
  45 static quad_func     quad_tab[SS_MAX_TRIFUNC];
  46
  47
  48 #define SS_COLOR(a,b) COPY_4UBV(a,b)
  49 #define SS_SPEC(a,b) COPY_4UBV(a,b)
  50 #define SS_IND(a,b) (a = b)
  51
  52 #define IND (0)
  53 #define TAG(x) x
  54 #include "ss_tritmp.h"
  55
  56 #define IND (SS_FLAT_BIT)
  57 #define TAG(x) x##_flat
  58 #include "ss_tritmp.h"
  59
  60 #define IND (SS_OFFSET_BIT)
  61 #define TAG(x) x##_offset
  62 #include "ss_tritmp.h"
  63
  64 #define IND (SS_FLAT_BIT|SS_OFFSET_BIT)
  65 #define TAG(x) x##_flat_offset
  66 #include "ss_tritmp.h"
  67
  68 #define IND (SS_TWOSIDE_BIT)
  69 #define TAG(x) x##_twoside
  70 #include "ss_tritmp.h"
  71
  72 #define IND (SS_FLAT_BIT|SS_TWOSIDE_BIT)
  73 #define TAG(x) x##_flat_twoside
  74 #include "ss_tritmp.h"
  75
  76 #define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT)
  77 #define TAG(x) x##_offset_twoside
  78 #include "ss_tritmp.h"
  79
  80 #define IND (SS_FLAT_BIT|SS_OFFSET_BIT|SS_TWOSIDE_BIT)
  81 #define TAG(x) x##_flat_offset_twoside
  82 #include "ss_tritmp.h"
  83
  84 #define IND (SS_UNFILLED_BIT)
  85 #define TAG(x) x##_unfilled
  86 #include "ss_tritmp.h"
  87
  88 #define IND (SS_FLAT_BIT|SS_UNFILLED_BIT)
  89 #define TAG(x) x##_flat_unfilled
  90 #include "ss_tritmp.h"
  91
  92 #define IND (SS_OFFSET_BIT|SS_UNFILLED_BIT)
  93 #define TAG(x) x##_offset_unfilled
  94 #include "ss_tritmp.h"
  95
  96 #define IND (SS_FLAT_BIT|SS_OFFSET_BIT|SS_UNFILLED_BIT)
  97 #define TAG(x) x##_flat_offset_unfilled
  98 #include "ss_tritmp.h"
  99
 100 #define IND (SS_TWOSIDE_BIT|SS_UNFILLED_BIT)
 101 #define TAG(x) x##_twoside_unfilled
 102 #include "ss_tritmp.h"
 103
 104 #define IND (SS_FLAT_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT)
 105 #define TAG(x) x##_flat_twoside_unfilled
 106 #include "ss_tritmp.h"
 107
 108 #define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT)
 109 #define TAG(x) x##_offset_twoside_unfilled
 110 #include "ss_tritmp.h"
 111
 112 #define IND (SS_FLAT_BIT|SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT)
 113 #define TAG(x) x##_flat_offset_twoside_unfilled
 114 #include "ss_tritmp.h"
 115
 116 #define IND (0|SS_COPY_EXTRAS)
 117 #define TAG(x) x##_spec
 118 #include "ss_tritmp.h"
 119
 120 #define IND (SS_FLAT_BIT|SS_COPY_EXTRAS)
 121 #define TAG(x) x##_flat_spec
 122 #include "ss_tritmp.h"
 123
 124 #define IND (SS_OFFSET_BIT|SS_COPY_EXTRAS)
 125 #define TAG(x) x##_offset_spec
 126 #include "ss_tritmp.h"
 127
 128 #define IND (SS_FLAT_BIT|SS_OFFSET_BIT|SS_COPY_EXTRAS)
 129 #define TAG(x) x##_flat_offset_spec
 130 #include "ss_tritmp.h"
 131
 132 #define IND (SS_TWOSIDE_BIT|SS_COPY_EXTRAS)
 133 #define TAG(x) x##_twoside_spec
 134 #include "ss_tritmp.h"
 135
 136 #define IND (SS_FLAT_BIT|SS_TWOSIDE_BIT|SS_COPY_EXTRAS)
 137 #define TAG(x) x##_flat_twoside_spec
 138 #include "ss_tritmp.h"
 139
 140 #define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_COPY_EXTRAS)
 141 #define TAG(x) x##_offset_twoside_spec
 142 #include "ss_tritmp.h"
 143
 144 #define IND (SS_FLAT_BIT|SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_COPY_EXTRAS)
 145 #define TAG(x) x##_flat_offset_twoside_spec
 146 #include "ss_tritmp.h"
 147
 148 #define IND (SS_UNFILLED_BIT|SS_COPY_EXTRAS)
 149 #define TAG(x) x##_unfilled_spec
 150 #include "ss_tritmp.h"
 151
 152 #define IND (SS_FLAT_BIT|SS_UNFILLED_BIT|SS_COPY_EXTRAS)
 153 #define TAG(x) x##_flat_unfilled_spec
 154 #include "ss_tritmp.h"
 155
 156 #define IND (SS_OFFSET_BIT|SS_UNFILLED_BIT|SS_COPY_EXTRAS)
 157 #define TAG(x) x##_offset_unfilled_spec
 158 #include "ss_tritmp.h"
 159
 160 #define IND (SS_FLAT_BIT|SS_OFFSET_BIT|SS_UNFILLED_BIT|SS_COPY_EXTRAS)
 161 #define TAG(x) x##_flat_offset_unfilled_spec
 162 #include "ss_tritmp.h"
 163
 164 #define IND (SS_TWOSIDE_BIT|SS_UNFILLED_BIT|SS_COPY_EXTRAS)
 165 #define TAG(x) x##_twoside_unfilled_spec
 166 #include "ss_tritmp.h"
 167
 168 #define IND (SS_FLAT_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT|SS_COPY_EXTRAS)
 169 #define TAG(x) x##_flat_twoside_unfilled_spec
 170 #include "ss_tritmp.h"
 171
 172 #define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT|SS_COPY_EXTRAS)
 173 #define TAG(x) x##_offset_twoside_unfilled_spec
 174 #include "ss_tritmp.h"
 175
 176 #define IND (SS_FLAT_BIT|SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT|SS_COPY_EXTRAS)
 177 #define TAG(x) x##_flat_offset_twoside_unfilled_spec
 178 #include "ss_tritmp.h"
 179
 180
 181 void _swsetup_trifuncs_init( GLcontext *ctx )
 182 {
 183    (void) ctx;
 184
 185    init();
 186    init_flat();
 187    init_offset();
 188    init_flat_offset();
 189    init_twoside();
 190    init_flat_twoside();
 191    init_offset_twoside();
 192    init_flat_offset_twoside();
 193    init_unfilled();
 194    init_flat_unfilled();
 195    init_offset_unfilled();
 196    init_flat_offset_unfilled();
 197    init_twoside_unfilled();
 198    init_flat_twoside_unfilled();
 199    init_offset_twoside_unfilled();
 200    init_flat_offset_twoside_unfilled();
 201
 202    init_spec();
 203    init_flat_spec();
 204    init_offset_spec();
 205    init_flat_offset_spec();
 206    init_twoside_spec();
 207    init_flat_twoside_spec();
 208    init_offset_twoside_spec();
 209    init_flat_offset_twoside_spec();
 210    init_unfilled_spec();
 211    init_flat_unfilled_spec();
 212    init_offset_unfilled_spec();
 213    init_flat_offset_unfilled_spec();
 214    init_twoside_unfilled_spec();
 215    init_flat_twoside_unfilled_spec();
 216    init_offset_twoside_unfilled_spec();
 217    init_flat_offset_twoside_unfilled_spec();
 218 }
 219
 220
 221 void _swsetup_choose_trifuncs( GLcontext *ctx )
 222 {
 223    SScontext *swsetup = SWSETUP_CONTEXT(ctx);
 224    GLuint ind = 0;
 225
 226    if (ctx->Light.ShadeModel == GL_FLAT)
 227       ind |= SS_FLAT_BIT;
 228
 229    if (ctx->Polygon._OffsetAny)
 230       ind |= SS_OFFSET_BIT;
 231
 232    if (ctx->Light.Enabled && ctx->Light.Model.TwoSide)
 233       ind |= SS_TWOSIDE_BIT;
 234
 235    if (ctx->Polygon._Unfilled)
 236       ind |= SS_UNFILLED_BIT;
 237
 238    if ((ctx->_TriangleCaps & DD_SEPERATE_SPECULAR) ||
 239        ctx->RenderMode == GL_SELECT ||
 240        !ctx->Visual.RGBAflag)
 241       ind |= SS_COPY_EXTRAS;
 242
 243    swsetup->Triangle = tri_tab[ind];
 244    swsetup->Line = line_tab[ind];
 245    swsetup->Points = points_tab[ind];
 246    swsetup->Quad = quad_tab[ind];
 247 }
 248