src/mesa/main/vtxfmt.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.3
   4  *
   5  * Copyright (C) 1999-2004  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Keith Whitwell <keith@tungstengraphics.com>
  26  *    Gareth Hughes
  27  */
  28
  29 #include "glheader.h"
  30 #include "api_loopback.h"
  31 #include "context.h"
  32 #include "imports.h"
  33 #include "mtypes.h"
  34 #include "state.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 * const tnl = &(ctx->TnlModule);                \
  52    const int tmp_offset = _gloffset_ ## FUNC ;                          \
  53                                                                         \
  54    ASSERT( tnl->Current );                                              \
  55    ASSERT( tnl->SwapCount < NUM_VERTEX_FORMAT_ENTRIES );                \
  56    ASSERT( tmp_offset >= 0 );                                           \
  57                                                                         \
  58    if (tnl->SwapCount == 0)                                             \
  59       ctx->Driver.BeginVertices( ctx );                                 \
  60                                                                         \
  61    /* Save the swapped function's dispatch entry so it can be */        \
  62    /* restored later. */                                                \
  63    tnl->Swapped[tnl->SwapCount].location = & (((_glapi_proc *)ctx->Exec)[tmp_offset]); \
  64    tnl->Swapped[tnl->SwapCount].function = (_glapi_proc)TAG(FUNC);      \
  65    tnl->SwapCount++;                                                    \
  66                                                                         \
  67    if ( 0 )                                                             \
  68       _mesa_debug(ctx, "   swapping gl" #FUNC"...\n" );                 \
  69                                                                         \
  70    /* Install the tnl function pointer. */                              \
  71    SET_ ## FUNC(ctx->Exec, tnl->Current->FUNC);                         \
  72 }
  73
  74 #define TAG(x) neutral_##x
  75 #include "vtxfmt_tmp.h"
  76
  77
  78 /**
  79  * Use the per-vertex functions found in <vfmt> to initialze the given
  80  * API dispatch table.
  81  */
  82 static void
  83 install_vtxfmt( struct _glapi_table *tab, const GLvertexformat *vfmt )
  84 {
  85    SET_ArrayElement(tab, vfmt->ArrayElement);
  86    SET_Color3f(tab, vfmt->Color3f);
  87    SET_Color3fv(tab, vfmt->Color3fv);
  88    SET_Color4f(tab, vfmt->Color4f);
  89    SET_Color4fv(tab, vfmt->Color4fv);
  90    SET_EdgeFlag(tab, vfmt->EdgeFlag);
  91    SET_EvalCoord1f(tab, vfmt->EvalCoord1f);
  92    SET_EvalCoord1fv(tab, vfmt->EvalCoord1fv);
  93    SET_EvalCoord2f(tab, vfmt->EvalCoord2f);
  94    SET_EvalCoord2fv(tab, vfmt->EvalCoord2fv);
  95    SET_EvalPoint1(tab, vfmt->EvalPoint1);
  96    SET_EvalPoint2(tab, vfmt->EvalPoint2);
  97    SET_FogCoordfEXT(tab, vfmt->FogCoordfEXT);
  98    SET_FogCoordfvEXT(tab, vfmt->FogCoordfvEXT);
  99    SET_Indexf(tab, vfmt->Indexf);
 100    SET_Indexfv(tab, vfmt->Indexfv);
 101    SET_Materialfv(tab, vfmt->Materialfv);
 102    SET_MultiTexCoord1fARB(tab, vfmt->MultiTexCoord1fARB);
 103    SET_MultiTexCoord1fvARB(tab, vfmt->MultiTexCoord1fvARB);
 104    SET_MultiTexCoord2fARB(tab, vfmt->MultiTexCoord2fARB);
 105    SET_MultiTexCoord2fvARB(tab, vfmt->MultiTexCoord2fvARB);
 106    SET_MultiTexCoord3fARB(tab, vfmt->MultiTexCoord3fARB);
 107    SET_MultiTexCoord3fvARB(tab, vfmt->MultiTexCoord3fvARB);
 108    SET_MultiTexCoord4fARB(tab, vfmt->MultiTexCoord4fARB);
 109    SET_MultiTexCoord4fvARB(tab, vfmt->MultiTexCoord4fvARB);
 110    SET_Normal3f(tab, vfmt->Normal3f);
 111    SET_Normal3fv(tab, vfmt->Normal3fv);
 112    SET_SecondaryColor3fEXT(tab, vfmt->SecondaryColor3fEXT);
 113    SET_SecondaryColor3fvEXT(tab, vfmt->SecondaryColor3fvEXT);
 114    SET_TexCoord1f(tab, vfmt->TexCoord1f);
 115    SET_TexCoord1fv(tab, vfmt->TexCoord1fv);
 116    SET_TexCoord2f(tab, vfmt->TexCoord2f);
 117    SET_TexCoord2fv(tab, vfmt->TexCoord2fv);
 118    SET_TexCoord3f(tab, vfmt->TexCoord3f);
 119    SET_TexCoord3fv(tab, vfmt->TexCoord3fv);
 120    SET_TexCoord4f(tab, vfmt->TexCoord4f);
 121    SET_TexCoord4fv(tab, vfmt->TexCoord4fv);
 122    SET_Vertex2f(tab, vfmt->Vertex2f);
 123    SET_Vertex2fv(tab, vfmt->Vertex2fv);
 124    SET_Vertex3f(tab, vfmt->Vertex3f);
 125    SET_Vertex3fv(tab, vfmt->Vertex3fv);
 126    SET_Vertex4f(tab, vfmt->Vertex4f);
 127    SET_Vertex4fv(tab, vfmt->Vertex4fv);
 128    SET_CallList(tab, vfmt->CallList);
 129    SET_CallLists(tab, vfmt->CallLists);
 130    SET_Begin(tab, vfmt->Begin);
 131    SET_End(tab, vfmt->End);
 132    SET_Rectf(tab, vfmt->Rectf);
 133    SET_DrawArrays(tab, vfmt->DrawArrays);
 134    SET_DrawElements(tab, vfmt->DrawElements);
 135    SET_DrawRangeElements(tab, vfmt->DrawRangeElements);
 136    SET_MultiDrawElementsEXT(tab, vfmt->MultiDrawElementsEXT);
 137    SET_EvalMesh1(tab, vfmt->EvalMesh1);
 138    SET_EvalMesh2(tab, vfmt->EvalMesh2);
 139    ASSERT(tab->EvalMesh2);
 140
 141    /* GL_NV_vertex_program */
 142    SET_VertexAttrib1fNV(tab, vfmt->VertexAttrib1fNV);
 143    SET_VertexAttrib1fvNV(tab, vfmt->VertexAttrib1fvNV);
 144    SET_VertexAttrib2fNV(tab, vfmt->VertexAttrib2fNV);
 145    SET_VertexAttrib2fvNV(tab, vfmt->VertexAttrib2fvNV);
 146    SET_VertexAttrib3fNV(tab, vfmt->VertexAttrib3fNV);
 147    SET_VertexAttrib3fvNV(tab, vfmt->VertexAttrib3fvNV);
 148    SET_VertexAttrib4fNV(tab, vfmt->VertexAttrib4fNV);
 149    SET_VertexAttrib4fvNV(tab, vfmt->VertexAttrib4fvNV);
 150 #if FEATURE_ARB_vertex_program
 151    SET_VertexAttrib1fARB(tab, vfmt->VertexAttrib1fARB);
 152    SET_VertexAttrib1fvARB(tab, vfmt->VertexAttrib1fvARB);
 153    SET_VertexAttrib2fARB(tab, vfmt->VertexAttrib2fARB);
 154    SET_VertexAttrib2fvARB(tab, vfmt->VertexAttrib2fvARB);
 155    SET_VertexAttrib3fARB(tab, vfmt->VertexAttrib3fARB);
 156    SET_VertexAttrib3fvARB(tab, vfmt->VertexAttrib3fvARB);
 157    SET_VertexAttrib4fARB(tab, vfmt->VertexAttrib4fARB);
 158    SET_VertexAttrib4fvARB(tab, vfmt->VertexAttrib4fvARB);
 159 #endif
 160 }
 161
 162
 163 void _mesa_init_exec_vtxfmt( GLcontext *ctx )
 164 {
 165    install_vtxfmt( ctx->Exec, &neutral_vtxfmt );
 166    ctx->TnlModule.SwapCount = 0;
 167 }
 168
 169
 170 void _mesa_install_exec_vtxfmt( GLcontext *ctx, const GLvertexformat *vfmt )
 171 {
 172    ctx->TnlModule.Current = vfmt;
 173    _mesa_restore_exec_vtxfmt( ctx );
 174 }
 175
 176
 177 void _mesa_install_save_vtxfmt( GLcontext *ctx, const GLvertexformat *vfmt )
 178 {
 179    install_vtxfmt( ctx->Save, vfmt );
 180 }
 181
 182
 183 void _mesa_restore_exec_vtxfmt( GLcontext *ctx )
 184 {
 185    struct gl_tnl_module *tnl = &(ctx->TnlModule);
 186    GLuint i;
 187
 188    /* Restore the neutral tnl module wrapper.
 189     */
 190    for ( i = 0 ; i < tnl->SwapCount ; i++ ) {
 191       *(tnl->Swapped[i].location) = tnl->Swapped[i].function;
 192    }
 193
 194    tnl->SwapCount = 0;
 195 }