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/* $Id: vtxfmt.c,v 1.11 2002/04/09 16:56:50 keithw Exp $ */
/*
* Mesa 3-D graphics library
* Version: 4.1
*
* Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Authors:
* Keith Whitwell <keithw@valinux.com>
* Gareth Hughes <gareth@valinux.com>
*/
#include "glheader.h"
#include "api_loopback.h"
#include "context.h"
#include "mtypes.h"
#include "state.h"
#include "vtxfmt.h"
/* The neutral vertex format. This wraps all tnl module functions,
* verifying that the currently-installed module is valid and then
* installing the function pointers in a lazy fashion. It records the
* function pointers that have been swapped out, which allows a fast
* restoration of the neutral module in almost all cases -- a typical
* app might only require 4-6 functions to be modified from the neutral
* baseline, and only restoring these is certainly preferable to doing
* the entire module's 60 or so function pointers.
*/
#define PRE_LOOPBACK( FUNC ) \
{ \
GET_CURRENT_CONTEXT(ctx); \
struct gl_tnl_module *tnl = &(ctx->TnlModule); \
\
ASSERT( tnl->Current ); \
ASSERT( tnl->SwapCount < NUM_VERTEX_FORMAT_ENTRIES ); \
\
/* Save the swapped function's dispatch entry so it can be */ \
/* restored later. */ \
tnl->Swapped[tnl->SwapCount][0] = (void *)&(ctx->Exec->FUNC); \
tnl->Swapped[tnl->SwapCount][1] = (void *)TAG(FUNC); \
tnl->SwapCount++; \
\
if ( 0 ) \
fprintf( stderr, " swapping gl" #FUNC"...\n" ); \
\
/* Install the tnl function pointer. */ \
ctx->Exec->FUNC = tnl->Current->FUNC; \
}
#define TAG(x) neutral_##x
#include "vtxfmt_tmp.h"
static void install_vtxfmt( struct _glapi_table *tab, GLvertexformat *vfmt )
{
tab->ArrayElement = vfmt->ArrayElement;
tab->Color3f = vfmt->Color3f;
tab->Color3fv = vfmt->Color3fv;
tab->Color3ub = vfmt->Color3ub;
tab->Color3ubv = vfmt->Color3ubv;
tab->Color4f = vfmt->Color4f;
tab->Color4fv = vfmt->Color4fv;
tab->Color4ub = vfmt->Color4ub;
tab->Color4ubv = vfmt->Color4ubv;
tab->EdgeFlag = vfmt->EdgeFlag;
tab->EdgeFlagv = vfmt->EdgeFlagv;
tab->EvalCoord1f = vfmt->EvalCoord1f;
tab->EvalCoord1fv = vfmt->EvalCoord1fv;
tab->EvalCoord2f = vfmt->EvalCoord2f;
tab->EvalCoord2fv = vfmt->EvalCoord2fv;
tab->EvalPoint1 = vfmt->EvalPoint1;
tab->EvalPoint2 = vfmt->EvalPoint2;
tab->FogCoordfEXT = vfmt->FogCoordfEXT;
tab->FogCoordfvEXT = vfmt->FogCoordfvEXT;
tab->Indexi = vfmt->Indexi;
tab->Indexiv = vfmt->Indexiv;
tab->Materialfv = vfmt->Materialfv;
tab->MultiTexCoord1fARB = vfmt->MultiTexCoord1fARB;
tab->MultiTexCoord1fvARB = vfmt->MultiTexCoord1fvARB;
tab->MultiTexCoord2fARB = vfmt->MultiTexCoord2fARB;
tab->MultiTexCoord2fvARB = vfmt->MultiTexCoord2fvARB;
tab->MultiTexCoord3fARB = vfmt->MultiTexCoord3fARB;
tab->MultiTexCoord3fvARB = vfmt->MultiTexCoord3fvARB;
tab->MultiTexCoord4fARB = vfmt->MultiTexCoord4fARB;
tab->MultiTexCoord4fvARB = vfmt->MultiTexCoord4fvARB;
tab->Normal3f = vfmt->Normal3f;
tab->Normal3fv = vfmt->Normal3fv;
tab->SecondaryColor3fEXT = vfmt->SecondaryColor3fEXT;
tab->SecondaryColor3fvEXT = vfmt->SecondaryColor3fvEXT;
tab->SecondaryColor3ubEXT = vfmt->SecondaryColor3ubEXT;
tab->SecondaryColor3ubvEXT = vfmt->SecondaryColor3ubvEXT;
tab->TexCoord1f = vfmt->TexCoord1f;
tab->TexCoord1fv = vfmt->TexCoord1fv;
tab->TexCoord2f = vfmt->TexCoord2f;
tab->TexCoord2fv = vfmt->TexCoord2fv;
tab->TexCoord3f = vfmt->TexCoord3f;
tab->TexCoord3fv = vfmt->TexCoord3fv;
tab->TexCoord4f = vfmt->TexCoord4f;
tab->TexCoord4fv = vfmt->TexCoord4fv;
tab->Vertex2f = vfmt->Vertex2f;
tab->Vertex2fv = vfmt->Vertex2fv;
tab->Vertex3f = vfmt->Vertex3f;
tab->Vertex3fv = vfmt->Vertex3fv;
tab->Vertex4f = vfmt->Vertex4f;
tab->Vertex4fv = vfmt->Vertex4fv;
tab->CallList = vfmt->CallList;
tab->Begin = vfmt->Begin;
tab->End = vfmt->End;
tab->VertexAttrib4fNV = vfmt->VertexAttrib4fNV;
tab->Rectf = vfmt->Rectf;
tab->DrawArrays = vfmt->DrawArrays;
tab->DrawElements = vfmt->DrawElements;
tab->DrawRangeElements = vfmt->DrawRangeElements;
tab->EvalMesh1 = vfmt->EvalMesh1;
tab->EvalMesh2 = vfmt->EvalMesh2;
assert(tab->EvalMesh2);
}
void _mesa_init_exec_vtxfmt( GLcontext *ctx )
{
install_vtxfmt( ctx->Exec, &neutral_vtxfmt );
ctx->TnlModule.SwapCount = 0;
}
void _mesa_install_exec_vtxfmt( GLcontext *ctx, GLvertexformat *vfmt )
{
ctx->TnlModule.Current = vfmt;
_mesa_restore_exec_vtxfmt( ctx );
if ( ctx->ExecPrefersFloat != vfmt->prefer_float_colors )
_mesa_loopback_prefer_float( ctx->Exec, vfmt->prefer_float_colors );
}
void _mesa_install_save_vtxfmt( GLcontext *ctx, GLvertexformat *vfmt )
{
install_vtxfmt( ctx->Save, vfmt );
if ( ctx->SavePrefersFloat != vfmt->prefer_float_colors )
_mesa_loopback_prefer_float( ctx->Save, vfmt->prefer_float_colors );
}
void _mesa_restore_exec_vtxfmt( GLcontext *ctx )
{
struct gl_tnl_module *tnl = &(ctx->TnlModule);
GLuint i;
/* Restore the neutral tnl module wrapper.
*/
for ( i = 0 ; i < tnl->SwapCount ; i++ ) {
*(void **)tnl->Swapped[i][0] = tnl->Swapped[i][1];
}
tnl->SwapCount = 0;
}
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