src/mesa/tnl/t_context.c

   1 /* $Id: t_context.c,v 1.31 2003/02/04 14:40:56 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  5.1
   6  *
   7  * Copyright (C) 1999-2003  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 <keith@tungstengraphics.com>
  28  */
  29
  30
  31 #include "glheader.h"
  32 #include "imports.h"
  33 #include "macros.h"
  34 #include "mtypes.h"
  35 #include "dlist.h"
  36 #include "light.h"
  37 #include "vtxfmt.h"
  38
  39 #include "t_context.h"
  40 #include "t_array_api.h"
  41 #include "t_eval_api.h"
  42 #include "t_imm_alloc.h"
  43 #include "t_imm_api.h"
  44 #include "t_imm_exec.h"
  45 #include "t_imm_dlist.h"
  46 #include "t_pipeline.h"
  47 #include "tnl.h"
  48
  49 #ifndef THREADS
  50 struct immediate *_tnl_CurrentInput = NULL;
  51 #endif
  52
  53
  54 void
  55 _tnl_MakeCurrent( GLcontext *ctx,
  56                   GLframebuffer *drawBuffer,
  57                   GLframebuffer *readBuffer )
  58 {
  59 #ifndef THREADS
  60    SET_IMMEDIATE( ctx, TNL_CURRENT_IM(ctx) );
  61 #endif
  62 }
  63
  64
  65 static void
  66 install_driver_callbacks( GLcontext *ctx )
  67 {
  68    ctx->Driver.NewList = _tnl_NewList;
  69    ctx->Driver.EndList = _tnl_EndList;
  70    ctx->Driver.FlushVertices = _tnl_flush_vertices;
  71    ctx->Driver.MakeCurrent = _tnl_MakeCurrent;
  72    ctx->Driver.BeginCallList = _tnl_BeginCallList;
  73    ctx->Driver.EndCallList = _tnl_EndCallList;
  74 }
  75
  76
  77
  78 GLboolean
  79 _tnl_CreateContext( GLcontext *ctx )
  80 {
  81    TNLcontext *tnl;
  82
  83    /* Create the TNLcontext structure
  84     */
  85    ctx->swtnl_context = tnl = (TNLcontext *) CALLOC( sizeof(TNLcontext) );
  86
  87    if (!tnl) {
  88       return GL_FALSE;
  89    }
  90
  91    /* Initialize the VB.
  92     */
  93    tnl->vb.Size = MAX2( IMM_SIZE,
  94                         ctx->Const.MaxArrayLockSize + MAX_CLIPPED_VERTICES);
  95
  96
  97    /* Initialize tnl state and tnl->vtxfmt.
  98     */
  99    _tnl_dlist_init( ctx );
 100    _tnl_array_init( ctx );
 101    _tnl_imm_init( ctx );
 102    _tnl_eval_init( ctx );
 103    _tnl_install_pipeline( ctx, _tnl_default_pipeline );
 104
 105
 106    tnl->NeedNdcCoords = GL_TRUE;
 107    tnl->LoopbackDListCassettes = GL_FALSE;
 108    tnl->CalcDListNormalLengths = GL_TRUE;
 109
 110    /* Hook our functions into exec and compile dispatch tables.
 111     */
 112    _mesa_install_exec_vtxfmt( ctx, &tnl->vtxfmt );
 113
 114    tnl->save_vtxfmt = tnl->vtxfmt;
 115    tnl->save_vtxfmt.CallList = _mesa_save_CallList;
 116    tnl->save_vtxfmt.EvalMesh1 = _mesa_save_EvalMesh1;
 117    tnl->save_vtxfmt.EvalMesh2 = _mesa_save_EvalMesh2;
 118    tnl->save_vtxfmt.Begin = _tnl_save_Begin;
 119
 120    _mesa_install_save_vtxfmt( ctx, &tnl->save_vtxfmt );
 121
 122
 123    /* Set a few default values in the driver struct.
 124     */
 125    install_driver_callbacks(ctx);
 126    ctx->Driver.NeedFlush = FLUSH_UPDATE_CURRENT;
 127    ctx->Driver.CurrentExecPrimitive = PRIM_OUTSIDE_BEGIN_END;
 128    ctx->Driver.CurrentSavePrimitive = PRIM_UNKNOWN;
 129
 130    tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
 131    tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
 132    tnl->Driver.NotifyMaterialChange = _mesa_validate_all_lighting_tables;
 133
 134
 135
 136    return GL_TRUE;
 137 }
 138
 139
 140 void
 141 _tnl_DestroyContext( GLcontext *ctx )
 142 {
 143    TNLcontext *tnl = TNL_CONTEXT(ctx);
 144
 145    _tnl_array_destroy( ctx );
 146    _tnl_imm_destroy( ctx );
 147    _tnl_destroy_pipeline( ctx );
 148    _tnl_free_immediate( ctx, tnl->freed_immediate );
 149
 150    FREE(tnl);
 151    ctx->swtnl_context = 0;
 152 }
 153
 154
 155 void
 156 _tnl_InvalidateState( GLcontext *ctx, GLuint new_state )
 157 {
 158    TNLcontext *tnl = TNL_CONTEXT(ctx);
 159
 160    if (new_state & _NEW_ARRAY) {
 161       struct immediate *IM = TNL_CURRENT_IM(ctx);
 162       IM->ArrayEltFlags = ~ctx->Array._Enabled;
 163       IM->ArrayEltFlush = (ctx->Array.LockCount
 164                            ? FLUSH_ELT_LAZY : FLUSH_ELT_EAGER);
 165       IM->ArrayEltIncr = ctx->Array.Vertex.Enabled ? 1 : 0;
 166       tnl->pipeline.run_input_changes |= ctx->Array.NewState; /* overkill */
 167    }
 168
 169    tnl->pipeline.run_state_changes |= new_state;
 170    tnl->pipeline.build_state_changes |= (new_state &
 171                                          tnl->pipeline.build_state_trigger);
 172
 173    tnl->eval.EvalNewState |= new_state;
 174 }
 175
 176
 177 void
 178 _tnl_wakeup_exec( GLcontext *ctx )
 179 {
 180    TNLcontext *tnl = TNL_CONTEXT(ctx);
 181
 182    install_driver_callbacks(ctx);
 183    ctx->Driver.NeedFlush |= FLUSH_UPDATE_CURRENT;
 184
 185    /* Hook our functions into exec and compile dispatch tables.
 186     */
 187    _mesa_install_exec_vtxfmt( ctx, &tnl->vtxfmt );
 188
 189    /* Call all appropriate driver callbacks to revive state.
 190     */
 191    _tnl_MakeCurrent( ctx, ctx->DrawBuffer, ctx->ReadBuffer );
 192
 193    /* Assume we haven't been getting state updates either:
 194     */
 195    _tnl_InvalidateState( ctx, ~0 );
 196    tnl->pipeline.run_input_changes = ~0;
 197
 198    if (ctx->Light.ColorMaterialEnabled) {
 199       _mesa_update_color_material( ctx, ctx->Current.Attrib[VERT_ATTRIB_COLOR0] );
 200    }
 201
 202 }
 203
 204
 205 void
 206 _tnl_wakeup_save_exec( GLcontext *ctx )
 207 {
 208    TNLcontext *tnl = TNL_CONTEXT(ctx);
 209
 210    _tnl_wakeup_exec( ctx );
 211    _mesa_install_save_vtxfmt( ctx, &tnl->save_vtxfmt );
 212 }
 213
 214
 215 /**
 216  * Drivers call this function to tell the TCL module whether or not
 217  * it wants Normalized Device Coords (NDC) computed.  I.e. whether
 218  * we should "Divide-by-W".  Software renders will want that.
 219  */
 220 void
 221 _tnl_need_projected_coords( GLcontext *ctx, GLboolean mode )
 222 {
 223    TNLcontext *tnl = TNL_CONTEXT(ctx);
 224    if (tnl->NeedNdcCoords != mode) {
 225       tnl->NeedNdcCoords = mode;
 226       _tnl_InvalidateState( ctx, _NEW_PROJECTION );
 227    }
 228 }
 229
 230 void
 231 _tnl_need_dlist_loopback( GLcontext *ctx, GLboolean mode )
 232 {
 233    TNLcontext *tnl = TNL_CONTEXT(ctx);
 234    tnl->LoopbackDListCassettes = mode;
 235 }
 236
 237 void
 238 _tnl_need_dlist_norm_lengths( GLcontext *ctx, GLboolean mode )
 239 {
 240    TNLcontext *tnl = TNL_CONTEXT(ctx);
 241    tnl->CalcDListNormalLengths = mode;
 242 }
 243
 244 void
 245 _tnl_isolate_materials( GLcontext *ctx, GLboolean mode )
 246 {
 247    TNLcontext *tnl = TNL_CONTEXT(ctx);
 248    tnl->IsolateMaterials = mode;
 249 }