src/mesa/swrast_setup/ss_context.c

   1 /* $Id: ss_context.c,v 1.6 2001/01/05 02:26:49 keithw Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.5
   6  *
   7  * Copyright (C) 1999  Brian Paul   All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  23  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  * Authors:
  27  *    Keith Whitwell <keithw@valinux.com>
  28  */
  29
  30
  31 #include "glheader.h"
  32 #include "mem.h"
  33
  34
  35 #include "ss_context.h"
  36 #include "ss_triangle.h"
  37 #include "ss_vb.h"
  38
  39 #include "swrast_setup.h"
  40
  41 #include "tnl/t_context.h"
  42
  43 /* Stub for swsetup->Triangle to select a true triangle function
  44  * after a state change.
  45  */
  46 static void
  47 _swsetup_validate_quad( GLcontext *ctx, GLuint v0, GLuint v1,
  48                         GLuint v2, GLuint v3 )
  49 {
  50    _swsetup_choose_trifuncs( ctx );
  51    SWSETUP_CONTEXT(ctx)->Quad( ctx, v0, v1, v2, v3 );
  52 }
  53
  54 static void
  55 _swsetup_validate_triangle( GLcontext *ctx, GLuint v0, GLuint v1, GLuint v2 )
  56 {
  57    _swsetup_choose_trifuncs( ctx );
  58    SWSETUP_CONTEXT(ctx)->Triangle( ctx, v0, v1, v2 );
  59 }
  60
  61 static void
  62 _swsetup_validate_line( GLcontext *ctx, GLuint v0, GLuint v1 )
  63 {
  64    _swsetup_choose_trifuncs( ctx );
  65    SWSETUP_CONTEXT(ctx)->Line( ctx, v0, v1 );
  66 }
  67
  68
  69 static void
  70 _swsetup_validate_points( GLcontext *ctx, GLuint first, GLuint last )
  71 {
  72    _swsetup_choose_trifuncs( ctx );
  73    SWSETUP_CONTEXT(ctx)->Points( ctx, first, last );
  74 }
  75
  76
  77
  78 static void
  79 _swsetup_validate_buildprojverts( GLcontext *ctx,
  80                                   GLuint start, GLuint end, GLuint new_inputs )
  81 {
  82    _swsetup_choose_rastersetup_func( ctx );
  83    SWSETUP_CONTEXT(ctx)->BuildProjVerts( ctx, start, end, new_inputs );
  84 }
  85
  86
  87 #define _SWSETUP_NEW_VERTS (_NEW_RENDERMODE|    \
  88                             _NEW_TEXTURE|       \
  89                             _NEW_COLOR|         \
  90                             _NEW_FOG|           \
  91                             _NEW_POINT)
  92
  93 #define _SWSETUP_NEW_RENDERINDEX (_NEW_POLYGON|_NEW_LIGHT)
  94
  95
  96 #if 0
  97 /* TODO: sleep/wakeup mechanism
  98  */
  99 static void
 100 _swsetup_sleep( GLcontext *ctx, GLuint new_state )
 101 {
 102 }
 103 #endif
 104
 105 static void
 106 _swsetup_invalidate_state( GLcontext *ctx, GLuint new_state )
 107 {
 108    SScontext *swsetup = SWSETUP_CONTEXT(ctx);
 109
 110    swsetup->NewState |= new_state;
 111
 112    if (new_state & _SWSETUP_NEW_RENDERINDEX) {
 113       swsetup->Triangle = _swsetup_validate_triangle;
 114       swsetup->Line = _swsetup_validate_line;
 115       swsetup->Points = _swsetup_validate_points;
 116       swsetup->Quad = _swsetup_validate_quad;
 117    }
 118
 119    if (new_state & _SWSETUP_NEW_VERTS) {
 120       swsetup->BuildProjVerts = _swsetup_validate_buildprojverts;
 121    }
 122 }
 123
 124
 125
 126 /* Dispatch from these fixed entrypoints to the state-dependent
 127  * functions:
 128  */
 129 void
 130 _swsetup_Quad( GLcontext *ctx, GLuint v0, GLuint v1,
 131                GLuint v2, GLuint v3 )
 132 {
 133    SWSETUP_CONTEXT(ctx)->Quad( ctx, v0, v1, v2, v3 );
 134 }
 135
 136 void
 137 _swsetup_Triangle( GLcontext *ctx, GLuint v0, GLuint v1,
 138                    GLuint v2 )
 139 {
 140    SWSETUP_CONTEXT(ctx)->Triangle( ctx, v0, v1, v2 );
 141 }
 142
 143 void
 144 _swsetup_Line( GLcontext *ctx, GLuint v0, GLuint v1 )
 145 {
 146    SWSETUP_CONTEXT(ctx)->Line( ctx, v0, v1 );
 147 }
 148
 149
 150 void
 151 _swsetup_Points( GLcontext *ctx, GLuint first, GLuint last )
 152 {
 153    SWSETUP_CONTEXT(ctx)->Points( ctx, first, last );
 154 }
 155
 156 void
 157 _swsetup_BuildProjectedVertices( GLcontext *ctx, GLuint start, GLuint end,
 158                                  GLuint new_inputs )
 159 {
 160    SWSETUP_CONTEXT(ctx)->BuildProjVerts( ctx, start, end, new_inputs );
 161 }
 162
 163 void
 164 _swsetup_InvalidateState( GLcontext *ctx, GLuint new_state )
 165 {
 166    SWSETUP_CONTEXT(ctx)->InvalidateState( ctx, new_state );
 167 }
 168
 169
 170 GLboolean
 171 _swsetup_CreateContext( GLcontext *ctx )
 172 {
 173    TNLcontext *tnl = TNL_CONTEXT(ctx);
 174    SScontext *swsetup = (SScontext *)CALLOC(sizeof(SScontext));
 175
 176    if (!swsetup)
 177       return GL_FALSE;
 178
 179    swsetup->verts = ALIGN_MALLOC( sizeof(SWvertex) * tnl->vb.Size, 32);
 180    if (!swsetup->verts) {
 181       FREE(swsetup);
 182       return GL_FALSE;
 183    }
 184
 185    ctx->swsetup_context = swsetup;
 186
 187    swsetup->NewState = ~0;
 188    swsetup->InvalidateState = _swsetup_invalidate_state;
 189    swsetup->Quad = _swsetup_validate_quad;
 190    swsetup->Triangle = _swsetup_validate_triangle;
 191    swsetup->Line = _swsetup_validate_line;
 192    swsetup->Points = _swsetup_validate_points;
 193    swsetup->BuildProjVerts = _swsetup_validate_buildprojverts;
 194
 195    _swsetup_vb_init( ctx );
 196    _swsetup_trifuncs_init( ctx );
 197
 198    return GL_TRUE;
 199 }
 200
 201 void
 202 _swsetup_DestroyContext( GLcontext *ctx )
 203 {
 204    if (SWSETUP_CONTEXT(ctx)) {
 205       if (SWSETUP_CONTEXT(ctx)->verts)
 206          ALIGN_FREE(SWSETUP_CONTEXT(ctx)->verts);
 207
 208       FREE(SWSETUP_CONTEXT(ctx));
 209       ctx->swsetup_context = 0;
 210    }
 211 }
 212
 213