src/mesa/tnl/t_context.c

   1 /* $Id: t_context.c,v 1.21 2001/07/12 22:09:21 keithw Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.5
   6  *
   7  * Copyright (C) 1999-2001  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 "macros.h"
  33 #include "mtypes.h"
  34 #include "mem.h"
  35 #include "dlist.h"
  36 #include "vtxfmt.h"
  37
  38 #include "t_context.h"
  39 #include "t_array_api.h"
  40 #include "t_eval_api.h"
  41 #include "t_imm_alloc.h"
  42 #include "t_imm_api.h"
  43 #include "t_imm_exec.h"
  44 #include "t_imm_dlist.h"
  45 #include "t_pipeline.h"
  46 #include "tnl.h"
  47
  48 #ifndef THREADS
  49 struct immediate *_tnl_CurrentInput = NULL;
  50 #endif
  51
  52
  53 void
  54 _tnl_MakeCurrent( GLcontext *ctx,
  55                   GLframebuffer *drawBuffer,
  56                   GLframebuffer *readBuffer )
  57 {
  58 #ifndef THREADS
  59    SET_IMMEDIATE( ctx, TNL_CURRENT_IM(ctx) );
  60 #endif
  61 }
  62
  63
  64 static void
  65 install_driver_callbacks( GLcontext *ctx )
  66 {
  67    ctx->Driver.NewList = _tnl_NewList;
  68    ctx->Driver.EndList = _tnl_EndList;
  69    ctx->Driver.FlushVertices = _tnl_flush_vertices;
  70    ctx->Driver.MakeCurrent = _tnl_MakeCurrent;
  71    ctx->Driver.BeginCallList = _tnl_BeginCallList;
  72    ctx->Driver.EndCallList = _tnl_EndCallList;
  73 }
  74
  75
  76
  77 GLboolean
  78 _tnl_CreateContext( GLcontext *ctx )
  79 {
  80    TNLcontext *tnl;
  81
  82    /* Create the TNLcontext structure
  83     */
  84    ctx->swtnl_context = tnl = (TNLcontext *) CALLOC( sizeof(TNLcontext) );
  85
  86    if (!tnl) {
  87       return GL_FALSE;
  88    }
  89
  90    /* Initialize the VB.
  91     */
  92    tnl->vb.Size = MAX2( IMM_SIZE,
  93                         ctx->Const.MaxArrayLockSize + MAX_CLIPPED_VERTICES);
  94
  95
  96    /* Initialize tnl state and tnl->vtxfmt.
  97     */
  98    _tnl_dlist_init( ctx );
  99    _tnl_array_init( ctx );
 100    _tnl_imm_init( ctx );
 101    _tnl_eval_init( ctx );
 102    _tnl_install_pipeline( ctx, _tnl_default_pipeline );
 103
 104
 105    tnl->NeedProjCoords = GL_TRUE;
 106    tnl->LoopbackDListCassettes = GL_FALSE;
 107    tnl->CalcDListNormalLengths = GL_TRUE;
 108
 109    /* Hook our functions into exec and compile dispatch tables.
 110     */
 111    _mesa_install_exec_vtxfmt( ctx, &tnl->vtxfmt );
 112    _mesa_install_save_vtxfmt( ctx, &tnl->vtxfmt );
 113    ctx->Save->CallList = _mesa_save_CallList;
 114    ctx->Save->CallLists = _mesa_save_CallLists;
 115    ctx->Save->EvalMesh1 = _mesa_save_EvalMesh1;
 116    ctx->Save->EvalMesh2 = _mesa_save_EvalMesh2;
 117    ctx->Save->Begin = _tnl_save_Begin;
 118
 119    /* Set a few default values in the driver struct.
 120     */
 121    install_driver_callbacks(ctx);
 122    ctx->Driver.NeedFlush = FLUSH_UPDATE_CURRENT;
 123    ctx->Driver.CurrentExecPrimitive = PRIM_OUTSIDE_BEGIN_END;
 124    ctx->Driver.CurrentSavePrimitive = PRIM_UNKNOWN;
 125
 126    tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
 127    tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
 128
 129
 130    return GL_TRUE;
 131 }
 132
 133
 134 void
 135 _tnl_DestroyContext( GLcontext *ctx )
 136 {
 137    TNLcontext *tnl = TNL_CONTEXT(ctx);
 138
 139    _tnl_array_destroy( ctx );
 140    _tnl_imm_destroy( ctx );
 141    _tnl_destroy_pipeline( ctx );
 142
 143    FREE(tnl);
 144    ctx->swtnl_context = 0;
 145 }
 146
 147
 148 void
 149 _tnl_InvalidateState( GLcontext *ctx, GLuint new_state )
 150 {
 151    TNLcontext *tnl = TNL_CONTEXT(ctx);
 152
 153    if (new_state & _NEW_ARRAY) {
 154       struct immediate *IM = TNL_CURRENT_IM(ctx);
 155       IM->ArrayEltFlags = ~ctx->Array._Enabled;
 156       IM->ArrayEltFlush = (ctx->Array.LockCount
 157                            ? FLUSH_ELT_LAZY : FLUSH_ELT_EAGER);
 158       IM->ArrayEltIncr = ctx->Array.Vertex.Enabled ? 1 : 0;
 159       tnl->pipeline.run_input_changes |= ctx->Array.NewState; /* overkill */
 160    }
 161
 162    tnl->pipeline.run_state_changes |= new_state;
 163    tnl->pipeline.build_state_changes |= (new_state &
 164                                          tnl->pipeline.build_state_trigger);
 165
 166    tnl->eval.EvalNewState |= new_state;
 167 }
 168
 169
 170 void
 171 _tnl_wakeup_exec( GLcontext *ctx )
 172 {
 173    TNLcontext *tnl = TNL_CONTEXT(ctx);
 174
 175    install_driver_callbacks(ctx);
 176    ctx->Driver.NeedFlush |= FLUSH_UPDATE_CURRENT;
 177
 178    /* Hook our functions into exec and compile dispatch tables.
 179     */
 180    _mesa_install_exec_vtxfmt( ctx, &tnl->vtxfmt );
 181
 182    /* Call all appropriate driver callbacks to revive state.
 183     */
 184    _tnl_MakeCurrent( ctx, ctx->DrawBuffer, ctx->ReadBuffer );
 185
 186    /* Assume we haven't been getting state updates either:
 187     */
 188    _tnl_InvalidateState( ctx, ~0 );
 189    tnl->pipeline.run_input_changes = ~0;
 190 }
 191
 192
 193 void
 194 _tnl_wakeup_save_exec( GLcontext *ctx )
 195 {
 196    TNLcontext *tnl = TNL_CONTEXT(ctx);
 197
 198    _tnl_wakeup_exec( ctx );
 199    _mesa_install_save_vtxfmt( ctx, &tnl->vtxfmt );
 200    ctx->Save->CallList = _mesa_save_CallList;   /* fixme */
 201    ctx->Save->CallLists = _mesa_save_CallLists;
 202    ctx->Save->EvalMesh1 = _mesa_save_EvalMesh1; /* fixme */
 203    ctx->Save->EvalMesh2 = _mesa_save_EvalMesh2;
 204    ctx->Save->Begin = _tnl_save_Begin;
 205 }
 206
 207
 208 void
 209 _tnl_need_projected_coords( GLcontext *ctx, GLboolean mode )
 210 {
 211    TNLcontext *tnl = TNL_CONTEXT(ctx);
 212    if (tnl->NeedProjCoords != mode) {
 213       tnl->NeedProjCoords = mode;
 214       _tnl_InvalidateState( ctx, _NEW_PROJECTION );
 215    }
 216 }
 217
 218 void
 219 _tnl_need_dlist_loopback( GLcontext *ctx, GLboolean mode )
 220 {
 221    TNLcontext *tnl = TNL_CONTEXT(ctx);
 222    if (tnl->LoopbackDListCassettes != mode) {
 223       tnl->LoopbackDListCassettes = mode;
 224    }
 225 }
 226
 227 void
 228 _tnl_need_dlist_norm_lengths( GLcontext *ctx, GLboolean mode )
 229 {
 230    TNLcontext *tnl = TNL_CONTEXT(ctx);
 231    if (tnl->CalcDListNormalLengths != mode) {
 232       tnl->CalcDListNormalLengths = mode;
 233    }
 234 }