src/mesa/main/vtxfmt.c

   1 /* $Id: vtxfmt.c,v 1.2 2001/03/11 18:49:11 gareth 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  * Author:
  27  *    Keith Whitwell <keithw@valinux.com>
  28  *    Gareth Hughes <gareth@valinux.com>
  29  */
  30
  31 #include "glheader.h"
  32 #include "api_loopback.h"
  33 #include "context.h"
  34 #include "mtypes.h"
  35 #include "vtxfmt.h"
  36
  37
  38 /* The neutral vertex format.  This wraps all tnl module functions,
  39  * verifying that the currently-installed module is valid and then
  40  * installing the function pointers in a lazy fashion.  It records the
  41  * function pointers that have been swapped out, which allows a fast
  42  * restoration of the neutral module in almost all cases -- a typical
  43  * app might only require 4-6 functions to be modified from the neutral
  44  * baseline, and only restoring these is certainly preferable to doing
  45  * the entire module's 60 or so function pointers.
  46  */
  47
  48 #define PRE_LOOPBACK( FUNC )                                            \
  49 {                                                                       \
  50    GET_CURRENT_CONTEXT(ctx);                                            \
  51    struct gl_tnl_module *tnl = &(ctx->TnlModule);                       \
  52    const GLuint new_state = ctx->NewState;                              \
  53                                                                         \
  54    if ( new_state )                                                     \
  55       _mesa_update_state( ctx );                                        \
  56                                                                         \
  57    /* Validate the current tnl module.                                  \
  58     */                                                                  \
  59    if ( new_state & ctx->Driver.NeedValidate )                          \
  60       ctx->Driver.ValidateTnlModule( ctx, new_state );                  \
  61                                                                         \
  62    ASSERT( tnl->Current );                                              \
  63    ASSERT( tnl->SwapCount < NUM_VERTEX_FORMAT_ENTRIES );                \
  64                                                                         \
  65    /* Save the swapped function's dispatch entry so it can be           \
  66     * restored later.                                                   \
  67     */                                                                  \
  68    tnl->Swapped[tnl->SwapCount][0] = (void *)&(ctx->Exec->FUNC);        \
  69    tnl->Swapped[tnl->SwapCount][1] = (void *)TAG(FUNC);                 \
  70    tnl->SwapCount++;                                                    \
  71                                                                         \
  72    if ( 0 )                                                             \
  73       fprintf( stderr, "   swapping gl" #FUNC"...\n" );                 \
  74                                                                         \
  75    /* Install the tnl function pointer.                                 \
  76     */                                                                  \
  77    ctx->Exec->FUNC = tnl->Current->FUNC;                                \
  78 }
  79
  80 #define TAG(x) neutral_##x
  81 #include "vtxfmt_tmp.h"
  82
  83
  84
  85 static void install_vtxfmt( struct _glapi_table *tab, GLvertexformat *vfmt )
  86 {
  87    tab->ArrayElement = vfmt->ArrayElement;
  88    tab->Color3f = vfmt->Color3f;
  89    tab->Color3fv = vfmt->Color3fv;
  90    tab->Color3ub = vfmt->Color3ub;
  91    tab->Color3ubv = vfmt->Color3ubv;
  92    tab->Color4f = vfmt->Color4f;
  93    tab->Color4fv = vfmt->Color4fv;
  94    tab->Color4ub = vfmt->Color4ub;
  95    tab->Color4ubv = vfmt->Color4ubv;
  96    tab->EdgeFlag = vfmt->EdgeFlag;
  97    tab->EdgeFlagv = vfmt->EdgeFlagv;
  98    tab->EvalCoord1f = vfmt->EvalCoord1f;
  99    tab->EvalCoord1fv = vfmt->EvalCoord1fv;
 100    tab->EvalCoord2f = vfmt->EvalCoord2f;
 101    tab->EvalCoord2fv = vfmt->EvalCoord2fv;
 102    tab->EvalPoint1 = vfmt->EvalPoint1;
 103    tab->EvalPoint2 = vfmt->EvalPoint2;
 104    tab->FogCoordfEXT = vfmt->FogCoordfEXT;
 105    tab->FogCoordfvEXT = vfmt->FogCoordfvEXT;
 106    tab->Indexi = vfmt->Indexi;
 107    tab->Indexiv = vfmt->Indexiv;
 108    tab->Materialfv = vfmt->Materialfv;
 109    tab->MultiTexCoord1fARB = vfmt->MultiTexCoord1fARB;
 110    tab->MultiTexCoord1fvARB = vfmt->MultiTexCoord1fvARB;
 111    tab->MultiTexCoord2fARB = vfmt->MultiTexCoord2fARB;
 112    tab->MultiTexCoord2fvARB = vfmt->MultiTexCoord2fvARB;
 113    tab->MultiTexCoord3fARB = vfmt->MultiTexCoord3fARB;
 114    tab->MultiTexCoord3fvARB = vfmt->MultiTexCoord3fvARB;
 115    tab->MultiTexCoord4fARB = vfmt->MultiTexCoord4fARB;
 116    tab->MultiTexCoord4fvARB = vfmt->MultiTexCoord4fvARB;
 117    tab->Normal3f = vfmt->Normal3f;
 118    tab->Normal3fv = vfmt->Normal3fv;
 119    tab->SecondaryColor3fEXT = vfmt->SecondaryColor3fEXT;
 120    tab->SecondaryColor3fvEXT = vfmt->SecondaryColor3fvEXT;
 121    tab->SecondaryColor3ubEXT = vfmt->SecondaryColor3ubEXT;
 122    tab->SecondaryColor3ubvEXT = vfmt->SecondaryColor3ubvEXT;
 123    tab->TexCoord1f = vfmt->TexCoord1f;
 124    tab->TexCoord1fv = vfmt->TexCoord1fv;
 125    tab->TexCoord2f = vfmt->TexCoord2f;
 126    tab->TexCoord2fv = vfmt->TexCoord2fv;
 127    tab->TexCoord3f = vfmt->TexCoord3f;
 128    tab->TexCoord3fv = vfmt->TexCoord3fv;
 129    tab->TexCoord4f = vfmt->TexCoord4f;
 130    tab->TexCoord4fv = vfmt->TexCoord4fv;
 131    tab->Vertex2f = vfmt->Vertex2f;
 132    tab->Vertex2fv = vfmt->Vertex2fv;
 133    tab->Vertex3f = vfmt->Vertex3f;
 134    tab->Vertex3fv = vfmt->Vertex3fv;
 135    tab->Vertex4f = vfmt->Vertex4f;
 136    tab->Vertex4fv = vfmt->Vertex4fv;
 137    tab->Begin = vfmt->Begin;
 138    tab->End = vfmt->End;
 139
 140 /*     tab->NewList = vfmt->NewList; */
 141    tab->CallList = vfmt->CallList;
 142
 143    tab->Rectf = vfmt->Rectf;
 144    tab->DrawArrays = vfmt->DrawArrays;
 145    tab->DrawElements = vfmt->DrawElements;
 146    tab->DrawRangeElements = vfmt->DrawRangeElements;
 147    tab->EvalMesh1 = vfmt->EvalMesh1;
 148    tab->EvalMesh2 = vfmt->EvalMesh2;
 149 }
 150
 151
 152 void _mesa_install_exec_vtxfmt( GLcontext *ctx, GLvertexformat *vfmt )
 153 {
 154    ctx->TnlModule.Current = vfmt;
 155    install_vtxfmt( ctx->Exec, &neutral_vtxfmt );
 156    if (ctx->ExecPrefersFloat != vfmt->prefer_float_colors)
 157       _mesa_loopback_prefer_float( ctx->Exec, vfmt->prefer_float_colors );
 158 }
 159
 160 void _mesa_install_save_vtxfmt( GLcontext *ctx, GLvertexformat *vfmt )
 161 {
 162    install_vtxfmt( ctx->Save, vfmt );
 163    if (ctx->SavePrefersFloat != vfmt->prefer_float_colors)
 164       _mesa_loopback_prefer_float( ctx->Save, vfmt->prefer_float_colors );
 165 }
 166
 167 void _mesa_restore_exec_vtxfmt( GLcontext *ctx, GLvertexformat *vfmt )
 168 {
 169    struct gl_tnl_module *tnl = &(ctx->TnlModule);
 170    GLuint i;
 171
 172    tnl->Current = vfmt;
 173
 174    /* Restore the neutral tnl module wrapper.
 175     */
 176    for ( i = 0 ; i < tnl->SwapCount ; i++ ) {
 177       *(void **)tnl->Swapped[i][0] = tnl->Swapped[i][1];
 178    }
 179
 180    tnl->SwapCount = 0;
 181 }