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 "api_arrayelt.h"
  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_vtx_api.h"
  42 #include "t_save_api.h"
  43 #include "t_pipeline.h"
  44 #include "tnl.h"
  45
  46
  47
  48 void
  49 _tnl_MakeCurrent( GLcontext *ctx,
  50                   GLframebuffer *drawBuffer,
  51                   GLframebuffer *readBuffer )
  52 {
  53 }
  54
  55
  56 static void
  57 install_driver_callbacks( GLcontext *ctx )
  58 {
  59    ctx->Driver.NewList = _tnl_NewList;
  60    ctx->Driver.EndList = _tnl_EndList;
  61    ctx->Driver.FlushVertices = _tnl_FlushVertices;
  62    ctx->Driver.SaveFlushVertices = _tnl_SaveFlushVertices;
  63    ctx->Driver.MakeCurrent = _tnl_MakeCurrent;
  64    ctx->Driver.BeginCallList = _tnl_BeginCallList;
  65    ctx->Driver.EndCallList = _tnl_EndCallList;
  66 }
  67
  68
  69
  70 GLboolean
  71 _tnl_CreateContext( GLcontext *ctx )
  72 {
  73    TNLcontext *tnl;
  74
  75    /* Create the TNLcontext structure
  76     */
  77    ctx->swtnl_context = tnl = (TNLcontext *) CALLOC( sizeof(TNLcontext) );
  78
  79    if (!tnl) {
  80       return GL_FALSE;
  81    }
  82
  83    /* Initialize the VB.
  84     */
  85    tnl->vb.Size = ctx->Const.MaxArrayLockSize + MAX_CLIPPED_VERTICES;
  86
  87
  88    /* Initialize tnl state and tnl->vtxfmt.
  89     */
  90    _tnl_save_init( ctx );
  91    _tnl_array_init( ctx );
  92    _tnl_vtx_init( ctx );
  93    _tnl_install_pipeline( ctx, _tnl_default_pipeline );
  94
  95    /* Initialize the arrayelt helper
  96     */
  97    if (!_ae_create_context( ctx ))
  98       return GL_FALSE;
  99
 100
 101    tnl->NeedNdcCoords = GL_TRUE;
 102    tnl->LoopbackDListCassettes = GL_FALSE;
 103    tnl->CalcDListNormalLengths = GL_TRUE;
 104
 105    /* Hook our functions into exec and compile dispatch tables.
 106     */
 107    _mesa_install_exec_vtxfmt( ctx, &tnl->exec_vtxfmt );
 108
 109
 110    /* Set a few default values in the driver struct.
 111     */
 112    install_driver_callbacks(ctx);
 113    ctx->Driver.NeedFlush = 0;
 114    ctx->Driver.CurrentExecPrimitive = PRIM_OUTSIDE_BEGIN_END;
 115    ctx->Driver.CurrentSavePrimitive = PRIM_UNKNOWN;
 116
 117    tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
 118    tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
 119    tnl->Driver.NotifyMaterialChange = _mesa_validate_all_lighting_tables;
 120
 121    return GL_TRUE;
 122 }
 123
 124
 125 void
 126 _tnl_DestroyContext( GLcontext *ctx )
 127 {
 128    TNLcontext *tnl = TNL_CONTEXT(ctx);
 129
 130    _tnl_array_destroy( ctx );
 131    _tnl_vtx_destroy( ctx );
 132    _tnl_save_destroy( ctx );
 133    _tnl_destroy_pipeline( ctx );
 134
 135    FREE(tnl);
 136    ctx->swtnl_context = 0;
 137 }
 138
 139
 140 void
 141 _tnl_InvalidateState( GLcontext *ctx, GLuint new_state )
 142 {
 143    TNLcontext *tnl = TNL_CONTEXT(ctx);
 144
 145    if (new_state & _NEW_ARRAY) {
 146       tnl->pipeline.run_input_changes |= ctx->Array.NewState; /* overkill */
 147    }
 148
 149    tnl->pipeline.run_state_changes |= new_state;
 150    tnl->pipeline.build_state_changes |= (new_state &
 151                                          tnl->pipeline.build_state_trigger);
 152
 153    tnl->vtx.eval.new_state |= new_state;
 154 }
 155
 156
 157 void
 158 _tnl_wakeup_exec( GLcontext *ctx )
 159 {
 160    TNLcontext *tnl = TNL_CONTEXT(ctx);
 161
 162    install_driver_callbacks(ctx);
 163    ctx->Driver.NeedFlush |= FLUSH_UPDATE_CURRENT;
 164
 165    /* Hook our functions into exec and compile dispatch tables.
 166     */
 167    _mesa_install_exec_vtxfmt( ctx, &tnl->exec_vtxfmt );
 168
 169    /* Call all appropriate driver callbacks to revive state.
 170     */
 171    _tnl_MakeCurrent( ctx, ctx->DrawBuffer, ctx->ReadBuffer );
 172
 173    /* Assume we haven't been getting state updates either:
 174     */
 175    _tnl_InvalidateState( ctx, ~0 );
 176    tnl->pipeline.run_input_changes = ~0;
 177
 178    if (ctx->Light.ColorMaterialEnabled) {
 179       _mesa_update_color_material( ctx,
 180                                    ctx->Current.Attrib[VERT_ATTRIB_COLOR0] );
 181    }
 182 }
 183
 184
 185 void
 186 _tnl_wakeup_save_exec( GLcontext *ctx )
 187 {
 188    TNLcontext *tnl = TNL_CONTEXT(ctx);
 189
 190    _tnl_wakeup_exec( ctx );
 191    _mesa_install_save_vtxfmt( ctx, &tnl->save_vtxfmt );
 192 }
 193
 194
 195 /**
 196  * Drivers call this function to tell the TCL module whether or not
 197  * it wants Normalized Device Coords (NDC) computed.  I.e. whether
 198  * we should "Divide-by-W".  Software renders will want that.
 199  */
 200 void
 201 _tnl_need_projected_coords( GLcontext *ctx, GLboolean mode )
 202 {
 203    TNLcontext *tnl = TNL_CONTEXT(ctx);
 204    if (tnl->NeedNdcCoords != mode) {
 205       tnl->NeedNdcCoords = mode;
 206       _tnl_InvalidateState( ctx, _NEW_PROJECTION );
 207    }
 208 }
 209
 210 void
 211 _tnl_need_dlist_loopback( GLcontext *ctx, GLboolean mode )
 212 {
 213    TNLcontext *tnl = TNL_CONTEXT(ctx);
 214    tnl->LoopbackDListCassettes = mode;
 215 }
 216
 217 void
 218 _tnl_need_dlist_norm_lengths( GLcontext *ctx, GLboolean mode )
 219 {
 220    TNLcontext *tnl = TNL_CONTEXT(ctx);
 221    tnl->CalcDListNormalLengths = mode;
 222 }
 223
 224 void
 225 _tnl_isolate_materials( GLcontext *ctx, GLboolean mode )
 226 {
 227    TNLcontext *tnl = TNL_CONTEXT(ctx);
 228    tnl->IsolateMaterials = mode;
 229 }