src/mesa/tnl/t_context.c

   1
   2 /*
   3  * Mesa 3-D graphics library
   4  * Version:  5.1
   5  *
   6  * Copyright (C) 1999-2003  Brian Paul   All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included
  16  * in all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  22  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  23  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  * Authors:
  26  *    Keith Whitwell <keith@tungstengraphics.com>
  27  */
  28
  29
  30 #include "glheader.h"
  31 #include "imports.h"
  32 #include "macros.h"
  33 #include "mtypes.h"
  34 #include "dlist.h"
  35 #include "light.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->NeedNdcCoords = 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
 113    tnl->save_vtxfmt = tnl->vtxfmt;
 114    tnl->save_vtxfmt.CallList = _mesa_save_CallList;
 115    tnl->save_vtxfmt.EvalMesh1 = _mesa_save_EvalMesh1;
 116    tnl->save_vtxfmt.EvalMesh2 = _mesa_save_EvalMesh2;
 117    tnl->save_vtxfmt.Begin = _tnl_save_Begin;
 118
 119    _mesa_install_save_vtxfmt( ctx, &tnl->save_vtxfmt );
 120
 121
 122    /* Set a few default values in the driver struct.
 123     */
 124    install_driver_callbacks(ctx);
 125    ctx->Driver.NeedFlush = FLUSH_UPDATE_CURRENT;
 126    ctx->Driver.CurrentExecPrimitive = PRIM_OUTSIDE_BEGIN_END;
 127    ctx->Driver.CurrentSavePrimitive = PRIM_UNKNOWN;
 128
 129    tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
 130    tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
 131    tnl->Driver.NotifyMaterialChange = _mesa_validate_all_lighting_tables;
 132
 133
 134
 135    return GL_TRUE;
 136 }
 137
 138
 139 void
 140 _tnl_DestroyContext( GLcontext *ctx )
 141 {
 142    TNLcontext *tnl = TNL_CONTEXT(ctx);
 143
 144    _tnl_array_destroy( ctx );
 145    _tnl_imm_destroy( ctx );
 146    _tnl_destroy_pipeline( ctx );
 147    _tnl_free_immediate( ctx, tnl->freed_immediate );
 148
 149    FREE(tnl);
 150    ctx->swtnl_context = 0;
 151 }
 152
 153
 154 void
 155 _tnl_InvalidateState( GLcontext *ctx, GLuint new_state )
 156 {
 157    TNLcontext *tnl = TNL_CONTEXT(ctx);
 158
 159    if (new_state & _NEW_ARRAY) {
 160       struct immediate *IM = TNL_CURRENT_IM(ctx);
 161       IM->ArrayEltFlags = ~ctx->Array._Enabled;
 162       IM->ArrayEltFlush = (ctx->Array.LockCount
 163                            ? FLUSH_ELT_LAZY : FLUSH_ELT_EAGER);
 164       IM->ArrayEltIncr = (ctx->Array.Vertex.Enabled ||
 165                           (ctx->VertexProgram.Enabled &&
 166                            ctx->Array.VertexAttrib[0].Enabled)) ? 1 : 0;
 167       tnl->pipeline.run_input_changes |= ctx->Array.NewState; /* overkill */
 168    }
 169
 170    tnl->pipeline.run_state_changes |= new_state;
 171    tnl->pipeline.build_state_changes |= (new_state &
 172                                          tnl->pipeline.build_state_trigger);
 173
 174    tnl->eval.EvalNewState |= new_state;
 175 }
 176
 177
 178 void
 179 _tnl_wakeup_exec( GLcontext *ctx )
 180 {
 181    TNLcontext *tnl = TNL_CONTEXT(ctx);
 182
 183    install_driver_callbacks(ctx);
 184    ctx->Driver.NeedFlush |= FLUSH_UPDATE_CURRENT;
 185
 186    /* Hook our functions into exec and compile dispatch tables.
 187     */
 188    _mesa_install_exec_vtxfmt( ctx, &tnl->vtxfmt );
 189
 190    /* Call all appropriate driver callbacks to revive state.
 191     */
 192    _tnl_MakeCurrent( ctx, ctx->DrawBuffer, ctx->ReadBuffer );
 193
 194    /* Assume we haven't been getting state updates either:
 195     */
 196    _tnl_InvalidateState( ctx, ~0 );
 197    tnl->pipeline.run_input_changes = ~0;
 198
 199    if (ctx->Light.ColorMaterialEnabled) {
 200       _mesa_update_color_material( ctx, ctx->Current.Attrib[VERT_ATTRIB_COLOR0] );
 201    }
 202
 203 }
 204
 205
 206 void
 207 _tnl_wakeup_save_exec( GLcontext *ctx )
 208 {
 209    TNLcontext *tnl = TNL_CONTEXT(ctx);
 210
 211    _tnl_wakeup_exec( ctx );
 212    _mesa_install_save_vtxfmt( ctx, &tnl->save_vtxfmt );
 213 }
 214
 215
 216 /**
 217  * Drivers call this function to tell the TCL module whether or not
 218  * it wants Normalized Device Coords (NDC) computed.  I.e. whether
 219  * we should "Divide-by-W".  Software renders will want that.
 220  */
 221 void
 222 _tnl_need_projected_coords( GLcontext *ctx, GLboolean mode )
 223 {
 224    TNLcontext *tnl = TNL_CONTEXT(ctx);
 225    if (tnl->NeedNdcCoords != mode) {
 226       tnl->NeedNdcCoords = mode;
 227       _tnl_InvalidateState( ctx, _NEW_PROJECTION );
 228    }
 229 }
 230
 231 void
 232 _tnl_need_dlist_loopback( GLcontext *ctx, GLboolean mode )
 233 {
 234    TNLcontext *tnl = TNL_CONTEXT(ctx);
 235    tnl->LoopbackDListCassettes = mode;
 236 }
 237
 238 void
 239 _tnl_need_dlist_norm_lengths( GLcontext *ctx, GLboolean mode )
 240 {
 241    TNLcontext *tnl = TNL_CONTEXT(ctx);
 242    tnl->CalcDListNormalLengths = mode;
 243 }
 244
 245 void
 246 _tnl_isolate_materials( GLcontext *ctx, GLboolean mode )
 247 {
 248    TNLcontext *tnl = TNL_CONTEXT(ctx);
 249    tnl->IsolateMaterials = mode;
 250 }