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 "mtypes.h"
  31
  32 #include "tnl/t_context.h"
  33
  34 #include "ss_triangle.h"
  35 #include "ss_context.h"
  36
  37 #define SS_RGBA_BIT         0x1
  38 #define SS_OFFSET_BIT       0x2
  39 #define SS_TWOSIDE_BIT      0x4
  40 #define SS_UNFILLED_BIT     0x8
  41 #define SS_MAX_TRIFUNC      0x10
  42
  43 static triangle_func tri_tab[SS_MAX_TRIFUNC];
  44 static quad_func     quad_tab[SS_MAX_TRIFUNC];
  45
  46
  47 #define SS_COLOR(a,b) COPY_4UBV(a,b)
  48 #define SS_SPEC(a,b) COPY_4UBV(a,b)
  49 #define SS_IND(a,b) (a = b)
  50
  51 #define IND (0)
  52 #define TAG(x) x
  53 #include "ss_tritmp.h"
  54
  55 #define IND (SS_OFFSET_BIT)
  56 #define TAG(x) x##_offset
  57 #include "ss_tritmp.h"
  58
  59 #define IND (SS_TWOSIDE_BIT)
  60 #define TAG(x) x##_twoside
  61 #include "ss_tritmp.h"
  62
  63 #define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT)
  64 #define TAG(x) x##_offset_twoside
  65 #include "ss_tritmp.h"
  66
  67 #define IND (SS_UNFILLED_BIT)
  68 #define TAG(x) x##_unfilled
  69 #include "ss_tritmp.h"
  70
  71 #define IND (SS_OFFSET_BIT|SS_UNFILLED_BIT)
  72 #define TAG(x) x##_offset_unfilled
  73 #include "ss_tritmp.h"
  74
  75 #define IND (SS_TWOSIDE_BIT|SS_UNFILLED_BIT)
  76 #define TAG(x) x##_twoside_unfilled
  77 #include "ss_tritmp.h"
  78
  79 #define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT)
  80 #define TAG(x) x##_offset_twoside_unfilled
  81 #include "ss_tritmp.h"
  82
  83 #define IND (0|SS_RGBA_BIT)
  84 #define TAG(x) x##_rgba
  85 #include "ss_tritmp.h"
  86
  87 #define IND (SS_OFFSET_BIT|SS_RGBA_BIT)
  88 #define TAG(x) x##_offset_rgba
  89 #include "ss_tritmp.h"
  90
  91 #define IND (SS_TWOSIDE_BIT|SS_RGBA_BIT)
  92 #define TAG(x) x##_twoside_rgba
  93 #include "ss_tritmp.h"
  94
  95 #define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_RGBA_BIT)
  96 #define TAG(x) x##_offset_twoside_rgba
  97 #include "ss_tritmp.h"
  98
  99 #define IND (SS_UNFILLED_BIT|SS_RGBA_BIT)
 100 #define TAG(x) x##_unfilled_rgba
 101 #include "ss_tritmp.h"
 102
 103 #define IND (SS_OFFSET_BIT|SS_UNFILLED_BIT|SS_RGBA_BIT)
 104 #define TAG(x) x##_offset_unfilled_rgba
 105 #include "ss_tritmp.h"
 106
 107 #define IND (SS_TWOSIDE_BIT|SS_UNFILLED_BIT|SS_RGBA_BIT)
 108 #define TAG(x) x##_twoside_unfilled_rgba
 109 #include "ss_tritmp.h"
 110
 111 #define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT|SS_RGBA_BIT)
 112 #define TAG(x) x##_offset_twoside_unfilled_rgba
 113 #include "ss_tritmp.h"
 114
 115
 116 void _swsetup_trifuncs_init( GLcontext *ctx )
 117 {
 118    (void) ctx;
 119
 120    init();
 121    init_offset();
 122    init_twoside();
 123    init_offset_twoside();
 124    init_unfilled();
 125    init_offset_unfilled();
 126    init_twoside_unfilled();
 127    init_offset_twoside_unfilled();
 128
 129    init_rgba();
 130    init_offset_rgba();
 131    init_twoside_rgba();
 132    init_offset_twoside_rgba();
 133    init_unfilled_rgba();
 134    init_offset_unfilled_rgba();
 135    init_twoside_unfilled_rgba();
 136    init_offset_twoside_unfilled_rgba();
 137 }
 138
 139
 140 static void swsetup_points( GLcontext *ctx, GLuint first, GLuint last )
 141 {
 142    struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
 143    SWvertex *verts = SWSETUP_CONTEXT(ctx)->verts;
 144    int i;
 145
 146    if (VB->Elts) {
 147       for(i=first;i<last;i++)
 148          if(VB->ClipMask[VB->Elts[i]]==0)
 149             _swrast_Point( ctx, &verts[VB->Elts[i]] );
 150    } else {
 151       for(i=first;i<last;i++)
 152          if(VB->ClipMask[i]==0)
 153             _swrast_Point( ctx, &verts[i] );
 154    }
 155 }
 156
 157 static void swsetup_line( GLcontext *ctx, GLuint v0, GLuint v1 )
 158 {
 159    SWvertex *verts = SWSETUP_CONTEXT(ctx)->verts;
 160    _swrast_Line( ctx, &verts[v0], &verts[v1] );
 161 }
 162
 163
 164
 165 void _swsetup_choose_trifuncs( GLcontext *ctx )
 166 {
 167    SScontext *swsetup = SWSETUP_CONTEXT(ctx);
 168    GLuint ind = 0;
 169
 170    if (ctx->Polygon._OffsetAny)
 171       ind |= SS_OFFSET_BIT;
 172
 173    if (ctx->Light.Enabled && ctx->Light.Model.TwoSide)
 174       ind |= SS_TWOSIDE_BIT;
 175
 176    if (ctx->_TriangleCaps & DD_TRI_UNFILLED)
 177       ind |= SS_UNFILLED_BIT;
 178
 179    if (ctx->Visual.RGBAflag)
 180       ind |= SS_RGBA_BIT;
 181
 182    swsetup->Triangle = tri_tab[ind];
 183    swsetup->Quad = quad_tab[ind];
 184    swsetup->Line = swsetup_line;
 185    swsetup->Points = swsetup_points;
 186 }
 187