path: root/src/mesa/tnl/t_imm_api.c

/*
 * Mesa 3-D graphics library
 * Version:  3.3
 *
 * Copyright (C) 1999-2000  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.
 *
 * Author:
 *   Keith Whitwell <keith@precisioninsight.com>
 */



#include "glheader.h"
#include "context.h"
#include "dlist.h"
#include "enums.h"
#include "light.h"
#include "mem.h"
#include "state.h"
#include "colormac.h"
#include "macros.h"

#include "t_context.h"
#include "t_imm_api.h"
#include "t_imm_elt.h"
#include "t_imm_exec.h"
#include "t_imm_dlist.h"


/* A cassette is full or flushed on a statechange.  
 */
void _tnl_flush_immediate( struct immediate *IM )
{
   GLcontext *ctx = IM->backref;

   if (ctx->CompileFlag) 
      _tnl_compile_cassette( ctx, IM );
   else 
      _tnl_execute_cassette( ctx, IM );
}


void _tnl_flush_vertices( GLcontext *ctx, GLuint flags )
{
   struct immediate *IM = TNL_CURRENT_IM(ctx);

   if (IM->Flag[IM->Start])
      if ((flags & FLUSH_UPDATE_CURRENT) || IM->Count > IM->Start)
	 _tnl_flush_immediate( IM );
}


static void
_tnl_begin( GLcontext *ctx, GLenum p )
{
   struct immediate *IM = TNL_CURRENT_IM(ctx);
   GLuint inflags, state;

   if (MESA_VERBOSE&VERBOSE_API)
      fprintf(stderr, "glBegin(IM %d) %s\n", IM->id, _mesa_lookup_enum_by_nr(p));
   
   if (ctx->NewState)
      _mesa_update_state(ctx);
       
   /* if only a very few slots left, might as well flush now
    */
   if (IM->Count > IMM_MAXDATA-8) {	      
      _tnl_flush_immediate( IM );
      IM = TNL_CURRENT_IM(ctx);
   }

   /* Check for and flush buffered vertices from internal operations.
    */
   if (IM->SavedBeginState) {
      _tnl_flush_immediate( IM );
      IM = TNL_CURRENT_IM(ctx);
      IM->BeginState = IM->SavedBeginState;
      IM->SavedBeginState = 0;
   }

   state = IM->BeginState;
   inflags = state & (VERT_BEGIN_0|VERT_BEGIN_1);
   state |= inflags << 2;	/* set error conditions */

   if (inflags != (VERT_BEGIN_0|VERT_BEGIN_1))
   {
      GLuint count = IM->Count;
      GLuint last = IM->LastPrimitive;

      ASSERT(IM->Primitive[IM->LastPrimitive] & PRIM_LAST);

      state |= (VERT_BEGIN_0|VERT_BEGIN_1);
      IM->Flag[count] |= VERT_BEGIN; 
      IM->Primitive[IM->LastPrimitive] &= ~PRIM_LAST;
      IM->Primitive[count] = p | PRIM_BEGIN | PRIM_LAST;
      IM->PrimitiveLength[IM->LastPrimitive] = count - IM->LastPrimitive;
      IM->LastPrimitive = count;

      /* Not quite right.  Need to use the fallback '_aa_ArrayElement'
       * when not known to be inside begin/end and arrays are unlocked.
       */
      if (IM->FlushElt) {
	 _tnl_translate_array_elts( ctx, IM, last, count );
	 IM->FlushElt = 0;
      }
   }

   ctx->Driver.NeedFlush |= FLUSH_STORED_VERTICES;
   IM->BeginState = state;
}



static void
_tnl_Begin( GLenum mode )
{
   GET_CURRENT_CONTEXT(ctx);

   if (mode > GL_POLYGON) {
      _mesa_compile_error( ctx, GL_INVALID_ENUM, "glBegin" );
      return;		     
   }

   _tnl_begin(ctx, mode);

   /* If compiling update SavePrimitive now.  
    *
    * In compile_and_exec mode, exec_primitive will be updated when
    * the cassette is finished.
    *
    * If not compiling, update exec_primitive now.
    */
   if (ctx->CompileFlag) {
      if (ctx->Driver.CurrentSavePrimitive == PRIM_UNKNOWN) 
	 ctx->Driver.CurrentSavePrimitive = PRIM_INSIDE_UNKNOWN_PRIM;
      else if (ctx->Driver.CurrentSavePrimitive == PRIM_OUTSIDE_BEGIN_END)
	 ctx->Driver.CurrentSavePrimitive = mode; 
      }
   else if (ctx->Driver.CurrentExecPrimitive == PRIM_OUTSIDE_BEGIN_END)
      ctx->Driver.CurrentExecPrimitive = mode;
}


GLboolean
_tnl_hard_begin( GLcontext *ctx, GLenum p )
{
   struct immediate *IM = TNL_CURRENT_IM(ctx);
   GLuint count, last;
   
   if (ctx->NewState)
      _mesa_update_state(ctx);
       
   /* If not compiling, treat as a normal begin().
    */
   if (!ctx->CompileFlag) {
      _tnl_begin( ctx, p );

      /* Set this for the duration:
       */
      ctx->Driver.CurrentExecPrimitive = p;
      return GL_TRUE;
   }
       
   if (IM->Count > IMM_MAXDATA-8) {	      
      _tnl_flush_immediate( IM );
      IM = TNL_CURRENT_IM(ctx);
   }
 
   switch (IM->BeginState & (VERT_BEGIN_0|VERT_BEGIN_1)) {
   case VERT_BEGIN_0|VERT_BEGIN_1:
      /* This is an immediate known to be inside a begin/end object.
       */
      IM->BeginState |= (VERT_ERROR_1|VERT_ERROR_0);
      return GL_FALSE;
      
   case VERT_BEGIN_0:
   case VERT_BEGIN_1:
      /* This is a display-list immediate in an unknown begin/end
       * state.  Assert it is empty and conviert it to a 'hard' one.  
       */
      ASSERT (IM->SavedBeginState == 0);
      
/*        ASSERT (ctx->Driver.CurrentSavePrimitive >= GL_POLYGON+1); */

      /* Push current beginstate, to be restored later.  Don't worry
       * about raising errors.
       */
      IM->SavedBeginState = IM->BeginState;
      
      /* FALLTHROUGH */
   case 0: 
      /* Unless we have fallen through, this is an immediate known to 
       * be outside begin/end objects.
       */
      
      IM->BeginState |= VERT_BEGIN_0|VERT_BEGIN_1;
	 

      count = IM->Count;
      last = IM->LastPrimitive;

      ASSERT(IM->Primitive[IM->LastPrimitive] & PRIM_LAST);

      IM->Flag[count] |= VERT_BEGIN; 
      IM->Primitive[last] &= ~PRIM_LAST;
      IM->Primitive[count] = p | PRIM_BEGIN | PRIM_LAST;
      IM->PrimitiveLength[last] = count - last;
      IM->LastPrimitive = count;
      
      ASSERT (!IM->FlushElt);

      /* This is necessary as this immediate will not be flushed in
       * _tnl_end() -- we leave it active, hoping to pick up more
       * vertices before the next state change.
       */
      ctx->Driver.NeedFlush |= FLUSH_STORED_VERTICES;

      return GL_TRUE;
      
   default:
      ASSERT (0);
      return GL_TRUE;      
   }
}



/* Need to do this to get the correct begin/end error behaviour from
 * functions like ColorPointerEXT which are still active in
 * SAVE_AND_EXEC modes.  
 */
void
_tnl_save_Begin( GLenum mode )
{
   GET_CURRENT_CONTEXT(ctx);
  
    if (mode > GL_POLYGON) {
      _mesa_compile_error( ctx, GL_INVALID_ENUM, "glBegin" );
      return;		     
   }

   if (ctx->ExecuteFlag) {
      /* Preserve vtxfmt invarient:
       */
      if (ctx->NewState)
	 _mesa_update_state( ctx );

      /* Slot in geomexec: No need to call setdispatch as we know
       * CurrentDispatch is Save.
       */
      ASSERT(ctx->CurrentDispatch == ctx->Save);
   }

   _tnl_begin( ctx, mode );
}




/* Note the continuation of a partially completed primitive.  For
 * driver t&l fallbacks between begin/end primitives.  Has basically
 * the same effects as a primitive wrapping onto a second immediate
 * struct.
 *
 * ==> Can actually call this from _tnl_wakeup_exec, taking mode from
 *     ctx->Driver.CurrentExecPrimitive.
 */
#if 0
void _tnl_fallback_begin( GLcontext *ctx, GLenum mode )
{
   struct immediate *IM = TNL_CURRENT_IM(ctx);
   ASSERT( IM->Count == IM->Start );
   ASSERT( IM->Flag[IM->Start] == 0 );
   ASSERT( mode < GL_POLYGON+1 );
   _tnl_begin( ctx, mode );
   IM->Primitive[IM->Start] &= ~PRIM_BEGIN;
}
#endif


/* Both streams now outside begin/end.
 *
 * Leave SavedBeginState untouched -- attempt to gather several
 * rects/arrays together in a single immediate struct.
 */
void
_tnl_end( GLcontext *ctx )
{
   struct immediate *IM = TNL_CURRENT_IM(ctx);
   GLuint state = IM->BeginState;
   GLuint inflags = (~state) & (VERT_BEGIN_0|VERT_BEGIN_1);

   state |= inflags << 2;	/* errors */

   if (inflags != (VERT_BEGIN_0|VERT_BEGIN_1))
   {
      GLuint count = IM->Count;
      GLuint last = IM->LastPrimitive;

      ASSERT(IM->Primitive[IM->LastPrimitive] & PRIM_LAST);

      state &= ~(VERT_BEGIN_0|VERT_BEGIN_1); /* update state */
      IM->Flag[count] |= VERT_END;
      IM->Primitive[last] |= PRIM_END;
      IM->Primitive[last] &= ~PRIM_LAST;
      IM->PrimitiveLength[last] = count - last;
      IM->Primitive[count] = (GL_POLYGON+1) | PRIM_LAST;
      IM->LastPrimitive = count;

      if (IM->FlushElt) {
	 _tnl_translate_array_elts( ctx, IM, last, count );
	 IM->FlushElt = 0;
      }
      
/*        ctx->Driver.NeedFlush |= FLUSH_STORED_VERTICES; */
   }

   IM->BeginState = state;      

   if (!ctx->CompileFlag)
      ctx->Driver.CurrentExecPrimitive = PRIM_OUTSIDE_BEGIN_END;


   /* You can set this flag to get the old 'flush_vb on glEnd()'
    * behaviour.
    */
   if ((MESA_DEBUG_FLAGS&DEBUG_ALWAYS_FLUSH))
      _tnl_flush_immediate( IM );
}

static void
_tnl_End(void)
{
   GET_CURRENT_CONTEXT(ctx);
   _tnl_end( ctx );

   /* Need to keep save primitive uptodate in COMPILE and
    * COMPILE_AND_EXEC modes, need to keep exec primitive uptodate
    * otherwise.
    */
   if (ctx->CompileFlag) 
      ctx->Driver.CurrentSavePrimitive = PRIM_OUTSIDE_BEGIN_END;
}


#define COLOR( IM, r, g, b, a )			\
{						\
   GLuint count = IM->Count;			\
   IM->Flag[count] |= VERT_RGBA;		\
   IM->Color[count][0] = r;			\
   IM->Color[count][1] = g;			\
   IM->Color[count][2] = b;			\
   IM->Color[count][3] = a;			\
}

#define COLORV( IM, v )				\
{						\
   GLuint count = IM->Count;			\
   IM->Flag[count] |= VERT_RGBA;		\
   COPY_CHAN4(IM->Color[count], v);		\
}


static void
_tnl_Color3f( GLfloat red, GLfloat green, GLfloat blue )
{
   GLchan col[4];
   GET_IMMEDIATE;
   UNCLAMPED_FLOAT_TO_CHAN(col[0], red);
   UNCLAMPED_FLOAT_TO_CHAN(col[1], green);
   UNCLAMPED_FLOAT_TO_CHAN(col[2], blue);
   col[3] = CHAN_MAX;
   COLORV( IM, col );
}


static void
_tnl_Color3ub( GLubyte red, GLubyte green, GLubyte blue )
{
#if CHAN_BITS == 8
   GET_IMMEDIATE;
   COLOR( IM, red, green, blue, CHAN_MAX );
#else
   GET_IMMEDIATE;
   COLOR(IM,
         UBYTE_TO_CHAN(red),
         UBYTE_TO_CHAN(green),
         UBYTE_TO_CHAN(blue),
         CHAN_MAX);
#endif
}




static void
_tnl_Color4f( GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha )
{
   GLchan col[4];
   GET_IMMEDIATE;
   UNCLAMPED_FLOAT_TO_CHAN(col[0], red);
   UNCLAMPED_FLOAT_TO_CHAN(col[1], green);
   UNCLAMPED_FLOAT_TO_CHAN(col[2], blue);
   UNCLAMPED_FLOAT_TO_CHAN(col[3], alpha);
   COLORV( IM, col );
}

static void
_tnl_Color4ub( GLubyte red, GLubyte green, GLubyte blue, GLubyte alpha )
{
   GET_IMMEDIATE;
   COLOR(IM,
         UBYTE_TO_CHAN(red),
         UBYTE_TO_CHAN(green),
         UBYTE_TO_CHAN(blue),
         UBYTE_TO_CHAN(alpha));
}


static void
_tnl_Color3fv( const GLfloat *v )
{
   GLchan col[4];
   GET_IMMEDIATE;
   UNCLAMPED_FLOAT_TO_CHAN(col[0], v[0]);
   UNCLAMPED_FLOAT_TO_CHAN(col[1], v[1]);
   UNCLAMPED_FLOAT_TO_CHAN(col[2], v[2]);
   col[3] = CHAN_MAX;
   COLORV( IM, col );
}



static void
_tnl_Color3ubv( const GLubyte *v )
{
   GET_IMMEDIATE;
   COLOR(IM,
         UBYTE_TO_CHAN(v[0]),
         UBYTE_TO_CHAN(v[1]),
         UBYTE_TO_CHAN(v[2]),
         CHAN_MAX );
}

static void
_tnl_Color4fv( const GLfloat *v )
{
   GLchan col[4];
   GET_IMMEDIATE;
   UNCLAMPED_FLOAT_TO_CHAN(col[0], v[0]);
   UNCLAMPED_FLOAT_TO_CHAN(col[1], v[1]);
   UNCLAMPED_FLOAT_TO_CHAN(col[2], v[2]);
   UNCLAMPED_FLOAT_TO_CHAN(col[3], v[3]);
   COLORV( IM, col );
}



static void
_tnl_Color4ubv( const GLubyte *v)
{
   GET_IMMEDIATE;
   COLOR(IM,
         UBYTE_TO_CHAN(v[0]),
         UBYTE_TO_CHAN(v[1]),
         UBYTE_TO_CHAN(v[2]),
         UBYTE_TO_CHAN(v[3]));
}




#define SECONDARY_COLOR( IM, r, g, b )		\
{						\
   GLuint count = IM->Count;			\
   IM->Flag[count] |= VERT_SPEC_RGB;		\
   IM->SecondaryColor[count][0] = r;		\
   IM->SecondaryColor[count][1] = g;		\
   IM->SecondaryColor[count][2] = b;		\
}

#define SECONDARY_COLORV( IM, v )		\
{						\
   GLuint count = IM->Count;			\
   IM->Flag[count] |= VERT_SPEC_RGB;		\
   IM->SecondaryColor[count][0] = v[0];		\
   IM->SecondaryColor[count][1] = v[1];		\
   IM->SecondaryColor[count][2] = v[2];		\
}




static void
_tnl_SecondaryColor3fEXT( GLfloat red, GLfloat green, GLfloat blue )
{
   GLchan col[3];
   GET_IMMEDIATE;
   UNCLAMPED_FLOAT_TO_CHAN(col[0], red);
   UNCLAMPED_FLOAT_TO_CHAN(col[1], green);
   UNCLAMPED_FLOAT_TO_CHAN(col[2], blue);
   SECONDARY_COLORV( IM, col );
}



static void
_tnl_SecondaryColor3ubEXT( GLubyte red, GLubyte green, GLubyte blue )
{
   GET_IMMEDIATE;
   SECONDARY_COLOR(IM,
                   UBYTE_TO_CHAN(red),
                   UBYTE_TO_CHAN(green),
                   UBYTE_TO_CHAN(blue));
}




static void
_tnl_SecondaryColor3fvEXT( const GLfloat *v )
{
   GLchan col[3];
   GET_IMMEDIATE;
   UNCLAMPED_FLOAT_TO_CHAN(col[0], v[0]);
   UNCLAMPED_FLOAT_TO_CHAN(col[1], v[1]);
   UNCLAMPED_FLOAT_TO_CHAN(col[2], v[2]);
   SECONDARY_COLORV( IM, col );
}



static void
_tnl_SecondaryColor3ubvEXT( const GLubyte *v )
{
   GET_IMMEDIATE;
   SECONDARY_COLOR(IM,
                   UBYTE_TO_CHAN(v[0]),
                   UBYTE_TO_CHAN(v[1]),
                   UBYTE_TO_CHAN(v[2]));
}




static void
_tnl_EdgeFlag( GLboolean flag )
{
   GLuint count;
   GET_IMMEDIATE;
   count = IM->Count;
   IM->EdgeFlag[count] = flag;
   IM->Flag[count] |= VERT_EDGE;
}


static void
_tnl_EdgeFlagv( const GLboolean *flag )
{
   GLuint count;
   GET_IMMEDIATE;
   count = IM->Count;
   IM->EdgeFlag[count] = *flag;
   IM->Flag[count] |= VERT_EDGE;
}


static void
_tnl_FogCoordfEXT( GLfloat f )
{
   GLuint count;
   GET_IMMEDIATE;
   count = IM->Count;
   IM->FogCoord[count] = f;
   IM->Flag[count] |= VERT_FOG_COORD;
}

static void
_tnl_FogCoordfvEXT( const GLfloat *v )
{
   GLuint count;
   GET_IMMEDIATE;
   count = IM->Count;
   IM->FogCoord[count] = v[0];
   IM->Flag[count] |= VERT_FOG_COORD;
}


static void
_tnl_Indexi( GLint c )
{
   GLuint count;
   GET_IMMEDIATE;
   count = IM->Count;
   IM->Index[count] = c;
   IM->Flag[count] |= VERT_INDEX;
}


static void
_tnl_Indexiv( const GLint *c )
{
   GLuint count;
   GET_IMMEDIATE;
   count = IM->Count;
   IM->Index[count] = *c;
   IM->Flag[count] |= VERT_INDEX;
}


#define NORMAL( x, y, z )			\
{						\
   GLuint count;				\
   GLfloat *normal;				\
   GET_IMMEDIATE;				\
   count = IM->Count;				\
   IM->Flag[count] |= VERT_NORM;		\
   normal = IM->Normal[count];			\
   ASSIGN_3V(normal, x,y,z);			\
}

#if defined(USE_IEEE)
#define NORMALF( x, y, z )					\
{								\
   GLuint count;						\
   GLint *normal;						\
   GET_IMMEDIATE;						\
   count = IM->Count;						\
   IM->Flag[count] |= VERT_NORM;				\
   normal = (GLint *)IM->Normal[count];				\
   ASSIGN_3V(normal, *(int*)&(x), *(int*)&(y), *(int*)&(z));	\
}
#else
#define NORMALF NORMAL
#endif

static void
_tnl_Normal3f( GLfloat nx, GLfloat ny, GLfloat nz )
{
   NORMALF(nx, ny, nz);
}


static void
_tnl_Normal3fv( const GLfloat *v )
{
   NORMALF( v[0], v[1], v[2] );
}



#define TEXCOORD1(s)				\
{						\
   GLuint count;				\
   GLfloat *tc;					\
   GET_IMMEDIATE;				\
   count = IM->Count;				\
   IM->Flag[count] |= VERT_TEX0;		\
   tc = IM->TexCoord0[count];			\
   ASSIGN_4V(tc,s,0,0,1);			\
}

#define TEXCOORD2(s,t)				\
{						\
   GLuint count;				\
   GLfloat *tc;					\
   GET_IMMEDIATE;				\
   count = IM->Count;				\
   IM->Flag[count] |= VERT_TEX0;		\
   tc = IM->TexCoord0[count];			\
   ASSIGN_4V(tc, s,t,0,1);		        \
}

#define TEXCOORD3(s,t,u)			\
{						\
   GLuint count;				\
   GLfloat *tc;					\
   GET_IMMEDIATE;				\
   count = IM->Count;				\
   IM->Flag[count] |= VERT_TEX0;		\
   IM->TexSize |= TEX_0_SIZE_3;		\
   tc = IM->TexCoord0[count];			\
   ASSIGN_4V(tc, s,t,u,1);			\
}

#define TEXCOORD4(s,t,u,v)			\
{						\
   GLuint count;				\
   GLfloat *tc;					\
   GET_IMMEDIATE;				\
   count = IM->Count;				\
   IM->Flag[count] |= VERT_TEX0;		\
   IM->TexSize |= TEX_0_SIZE_4;		\
   tc = IM->TexCoord0[count];			\
   ASSIGN_4V(tc, s,t,u,v);			\
}

#if defined(USE_IEEE)
#define TEXCOORD2F(s,t)				\
{						\
   GLuint count;				\
   GLint *tc;					\
   GET_IMMEDIATE;				\
   count = IM->Count;				\
   IM->Flag[count] |= VERT_TEX0;		\
   tc = (GLint *)IM->TexCoord0[count];		\
   tc[0] = *(GLint *)&(s);			\
   tc[1] = *(GLint *)&(t);			\
   tc[2] = 0;					\
   tc[3] = IEEE_ONE;				\
}
#else
#define TEXCOORD2F TEXCOORD2
#endif

static void
_tnl_TexCoord1f( GLfloat s )
{
   TEXCOORD1(s);
}


static void
_tnl_TexCoord2f( GLfloat s, GLfloat t )
{
   TEXCOORD2F(s,t); 
}


static void
_tnl_TexCoord3f( GLfloat s, GLfloat t, GLfloat r )
{
   TEXCOORD3(s,t,r);
}

static void
_tnl_TexCoord4f( GLfloat s, GLfloat t, GLfloat r, GLfloat q )
{
   TEXCOORD4(s,t,r,q)
}

static void
_tnl_TexCoord1fv( const GLfloat *v )
{
   TEXCOORD1(v[0]);
}

static void
_tnl_TexCoord2fv( const GLfloat *v )
{
   TEXCOORD2F(v[0],v[1]);
}

static void
_tnl_TexCoord3fv( const GLfloat *v )
{
   TEXCOORD3(v[0],v[1],v[2]);
}

static void
_tnl_TexCoord4fv( const GLfloat *v )
{
   TEXCOORD4(v[0],v[1],v[2],v[3]);
}



/* KW: Run into bad problems in vertex copying if we don't fully pad
 *     the incoming vertices.
 */
#define VERTEX2(IM, x,y)			\
{						\
   GLuint count = IM->Count++;			\
   GLfloat *dest = IM->Obj[count];		\
   IM->Flag[count] |= VERT_OBJ;			\
   ASSIGN_4V(dest, x, y, 0, 1);			\
/*     ASSERT(IM->Flag[IM->Count]==0);		 */\
   if (count == IMM_MAXDATA - 1)		\
      _tnl_flush_immediate( IM );		\
}

#define VERTEX3(IM,x,y,z)			\
{						\
   GLuint count = IM->Count++;			\
   GLfloat *dest = IM->Obj[count];		\
   IM->Flag[count] |= VERT_OBJ_23;		\
   ASSIGN_4V(dest, x, y, z, 1);			\
/*     ASSERT(IM->Flag[IM->Count]==0); */		\
   if (count == IMM_MAXDATA - 1)		\
      _tnl_flush_immediate( IM );		\
}

#define VERTEX4(IM, x,y,z,w)			\
{						\
   GLuint count = IM->Count++;			\
   GLfloat *dest = IM->Obj[count];		\
   IM->Flag[count] |= VERT_OBJ_234;		\
   ASSIGN_4V(dest, x, y, z, w);			\
   if (count == IMM_MAXDATA - 1)			\
      _tnl_flush_immediate( IM );		\
}

#if defined(USE_IEEE)
#define VERTEX2F(IM, x, y)			\
{						\
   GLuint count = IM->Count++;			\
   GLint *dest = (GLint *)IM->Obj[count];	\
   IM->Flag[count] |= VERT_OBJ; 		\
   dest[0] = *(GLint *)&(x);			\
   dest[1] = *(GLint *)&(y);			\
   dest[2] = 0;					\
   dest[3] = IEEE_ONE;				\
/*     ASSERT(IM->Flag[IM->Count]==0); */		\
   if (count == IMM_MAXDATA - 1)			\
      _tnl_flush_immediate( IM );		\
}
#else
#define VERTEX2F VERTEX2
#endif

#if defined(USE_IEEE)
#define VERTEX3F(IM, x, y, z)			\
{						\
   GLuint count = IM->Count++;			\
   GLint *dest = (GLint *)IM->Obj[count];	\
   IM->Flag[count] |= VERT_OBJ_23;		\
   dest[0] = *(GLint *)&(x);			\
   dest[1] = *(GLint *)&(y);			\
   dest[2] = *(GLint *)&(z);			\
   dest[3] = IEEE_ONE;				\
/*     ASSERT(IM->Flag[IM->Count]==0);	 */	\
   if (count == IMM_MAXDATA - 1)			\
      _tnl_flush_immediate( IM );		\
}
#else
#define VERTEX3F VERTEX3
#endif

#if defined(USE_IEEE)
#define VERTEX4F(IM, x, y, z, w)		\
{						\
   GLuint count = IM->Count++;			\
   GLint *dest = (GLint *)IM->Obj[count];	\
   IM->Flag[count] |= VERT_OBJ_234;		\
   dest[0] = *(GLint *)&(x);			\
   dest[1] = *(GLint *)&(y);			\
   dest[2] = *(GLint *)&(z);			\
   dest[3] = *(GLint *)&(w);			\
   if (count == IMM_MAXDATA - 1)			\
      _tnl_flush_immediate( IM );		\
}
#else
#define VERTEX4F VERTEX4
#endif



static void
_tnl_Vertex2f( GLfloat x, GLfloat y )
{
   GET_IMMEDIATE;
   VERTEX2F( IM, x, y );
}

static void
_tnl_Vertex3f( GLfloat x, GLfloat y, GLfloat z )
{
   GET_IMMEDIATE;
   VERTEX3F( IM, x, y, z ); 
}
static void
_tnl_Vertex4f( GLfloat x, GLfloat y, GLfloat z, GLfloat w )
{
   GET_IMMEDIATE;
   VERTEX4F( IM, x, y, z, w );
}

static void
_tnl_Vertex2fv( const GLfloat *v )
{
   GET_IMMEDIATE;
   VERTEX2F( IM, v[0], v[1] );
}

static void
_tnl_Vertex3fv( const GLfloat *v )
{
   GET_IMMEDIATE;
   VERTEX3F( IM, v[0], v[1], v[2] );
}

static void
_tnl_Vertex4fv( const GLfloat *v )
{
   GET_IMMEDIATE;
   VERTEX4F( IM, v[0], v[1], v[2], v[3] );
}




/*
 * GL_ARB_multitexture
 *
 * Note: the multitexture spec says that specifying an invalid target
 * has undefined results and does not have to generate an error.  Just
 * don't crash.  We no-op on invalid targets.
 */

#define MAX_TARGET (GL_TEXTURE0_ARB + MAX_TEXTURE_UNITS)

#define MULTI_TEXCOORD1(target, s)			\
{							\
   GET_IMMEDIATE;					\
   GLuint texunit = target - GL_TEXTURE0_ARB;		\
   if (texunit < IM->MaxTextureUnits) {			\
      GLuint count = IM->Count;				\
      GLfloat *tc = IM->TexCoord[texunit][count];	\
      ASSIGN_4V(tc, s, 0.0F, 0.0F, 1.0F);		\
      IM->Flag[count] |= VERT_TEX(texunit);		\
   }							\
}

#define MULTI_TEXCOORD2(target, s, t)			\
{							\
   GET_IMMEDIATE;					\
   GLuint texunit = target - GL_TEXTURE0_ARB;		\
   if (texunit < IM->MaxTextureUnits) {			\
      GLuint count = IM->Count;				\
      GLfloat *tc = IM->TexCoord[texunit][count];	\
      ASSIGN_4V(tc, s, t, 0.0F, 1.0F);			\
      IM->Flag[count] |= VERT_TEX(texunit);		\
   }							\
}

#define MULTI_TEXCOORD3(target, s, t, u)		\
{							\
   GET_IMMEDIATE;					\
   GLuint texunit = target - GL_TEXTURE0_ARB;		\
   if (texunit < IM->MaxTextureUnits) {			\
      GLuint count = IM->Count;				\
      GLfloat *tc = IM->TexCoord[texunit][count];	\
      ASSIGN_4V(tc, s, t, u, 1.0F);			\
      IM->Flag[count] |= VERT_TEX(texunit);		\
      IM->TexSize |= TEX_SIZE_3(texunit);		\
   }							\
}

#define MULTI_TEXCOORD4(target, s, t, u, v)		\
{							\
   GET_IMMEDIATE;					\
   GLuint texunit = target - GL_TEXTURE0_ARB;		\
   if (texunit < IM->MaxTextureUnits) {			\
      GLuint count = IM->Count;				\
      GLfloat *tc = IM->TexCoord[texunit][count];	\
      ASSIGN_4V(tc, s, t, u, v);			\
      IM->Flag[count] |= VERT_TEX(texunit);		\
      IM->TexSize |= TEX_SIZE_4(texunit);		\
   }							\
}

#if defined(USE_IEEE)
#define MULTI_TEXCOORD2F(target, s, t)				\
{								\
   GET_IMMEDIATE;						\
   GLuint texunit = target - GL_TEXTURE0_ARB;			\
   if (texunit < IM->MaxTextureUnits) {				\
      GLuint count = IM->Count;					\
      GLint *tc = (GLint *)IM->TexCoord[texunit][count];	\
      IM->Flag[count] |= VERT_TEX(texunit);			\
      tc[0] = *(int *)&(s);					\
      tc[1] = *(int *)&(t);					\
      tc[2] = 0;						\
      tc[3] = IEEE_ONE;						\
   }								\
}
#else
#define MULTI_TEXCOORD2F MULTI_TEXCOORD2
#endif

static void
_tnl_MultiTexCoord1fARB(GLenum target, GLfloat s)
{
   MULTI_TEXCOORD1( target, s );
}

static void
_tnl_MultiTexCoord1fvARB(GLenum target, const GLfloat *v)
{
   MULTI_TEXCOORD1( target, v[0] );
}

static void
_tnl_MultiTexCoord2fARB(GLenum target, GLfloat s, GLfloat t)
{
   MULTI_TEXCOORD2F( target, s, t );
}

static void
_tnl_MultiTexCoord2fvARB(GLenum target, const GLfloat *v)
{
   MULTI_TEXCOORD2F( target, v[0], v[1] );
}

static void
_tnl_MultiTexCoord3fARB(GLenum target, GLfloat s, GLfloat t, GLfloat r)
{
   MULTI_TEXCOORD3( target, s, t, r );
}

static void
_tnl_MultiTexCoord3fvARB(GLenum target, const GLfloat *v)
{
   MULTI_TEXCOORD3( target, v[0], v[1], v[2] );
}

static void
_tnl_MultiTexCoord4fARB(GLenum target, GLfloat s, GLfloat t, GLfloat r, GLfloat q)
{
   MULTI_TEXCOORD4( target, s, t, r, q );
}

static void
_tnl_MultiTexCoord4fvARB(GLenum target, const GLfloat *v)
{
   MULTI_TEXCOORD4( target, v[0], v[1], v[2], v[3] );
}



/* KW: Because the eval values don't become 'current', fixup will flow
 *     through these vertices, and then evaluation will write on top
 *     of the fixup results.  
 *
 *     Note: using Obj to hold eval coord data. 
 */
#define EVALCOORD1(IM, x)				\
{							\
   GLuint count = IM->Count++;				\
   IM->Flag[count] |= VERT_EVAL_C1;			\
   ASSIGN_4V(IM->Obj[count], x, 0, 0, 1);		\
   if (count == IMM_MAXDATA-1)				\
      _tnl_flush_immediate( IM );			\
}

#define EVALCOORD2(IM, x, y)				\
{							\
   GLuint count = IM->Count++;				\
   IM->Flag[count] |= VERT_EVAL_C2;			\
   ASSIGN_4V(IM->Obj[count], x, y, 0, 1);		\
   if (count == IMM_MAXDATA-1)				\
      _tnl_flush_immediate( IM );			\
}

#define EVALPOINT1(IM, x)				\
{							\
   GLuint count = IM->Count++;				\
   IM->Flag[count] |= VERT_EVAL_P1;			\
   ASSIGN_4V(IM->Obj[count], x, 0, 0, 1);		\
   if (count == IMM_MAXDATA-1)				\
      _tnl_flush_immediate( IM );			\
}
 
#define EVALPOINT2(IM, x, y)				\
{							\
   GLuint count = IM->Count++;				\
   IM->Flag[count] |= VERT_EVAL_P2;			\
   ASSIGN_4V(IM->Obj[count], x, y, 0, 1);		\
   if (count == IMM_MAXDATA-1)				\
      _tnl_flush_immediate( IM );			\
}

static void
_tnl_EvalCoord1f( GLfloat u )
{
   GET_IMMEDIATE;
   EVALCOORD1( IM, u );
}

static void
_tnl_EvalCoord1fv( const GLfloat *u )
{
   GET_IMMEDIATE;
   EVALCOORD1( IM, (GLfloat) *u );
}

static void
_tnl_EvalCoord2f( GLfloat u, GLfloat v )
{
   GET_IMMEDIATE;
   EVALCOORD2( IM, u, v );
}

static void
_tnl_EvalCoord2fv( const GLfloat *u )
{
   GET_IMMEDIATE;
   EVALCOORD2( IM, u[0], u[1] );
}


static void
_tnl_EvalPoint1( GLint i )
{
   GET_IMMEDIATE;
   EVALPOINT1( IM, i );
}


static void
_tnl_EvalPoint2( GLint i, GLint j )
{
   GET_IMMEDIATE;
   EVALPOINT2( IM, i, j );
}


/* Need to use the default array-elt outside begin/end for strict
 * conformance.
 */
#define ARRAY_ELT( IM, i )			\
{						\
   GLuint count = IM->Count;			\
   IM->Elt[count] = i;				\
   IM->Flag[count] &= IM->ArrayEltFlags;	\
   IM->Flag[count] |= VERT_ELT;			\
   IM->FlushElt |= IM->ArrayEltFlush;		\
   IM->Count += IM->ArrayEltIncr;		\
   if (IM->Count == IMM_MAXDATA)			\
      _tnl_flush_immediate( IM );		\
}


static void
_tnl_ArrayElement( GLint i )
{
   GET_IMMEDIATE;
   ARRAY_ELT( IM, i );
}


/* Internal functions.  These are safe to use providing either: 
 * 
 *    - It is determined that a display list is not being compiled, or
 *    if so that these commands won't be compiled into the list (see
 *    t_eval.c for an example).  
 *
 *    - _tnl_hard_begin() is used instead of _tnl_[bB]egin, and tested
 *    for a GL_TRUE return value.  See _tnl_Rectf, below.
 */
void
_tnl_eval_coord1f( GLcontext *CC, GLfloat u )
{
   struct immediate *i = TNL_CURRENT_IM(CC);
   EVALCOORD1( i, u );
}

void
_tnl_eval_coord2f( GLcontext *CC, GLfloat u, GLfloat v )
{
   struct immediate *i = TNL_CURRENT_IM(CC);
   EVALCOORD2( i, u, v );
}

void
_tnl_array_element( GLcontext *CC, GLint i )
{
   struct immediate *im = TNL_CURRENT_IM(CC);
   ARRAY_ELT( im, i );
}

void
_tnl_vertex2f( GLcontext *ctx, GLfloat x, GLfloat y )
{
   struct immediate *im = TNL_CURRENT_IM(ctx);
   VERTEX2( im, x, y );
}





/* Execute a glRectf() function.  _tnl_hard_begin() ensures the check
 * on outside_begin_end is executed even in compiled lists.  These
 * vertices can now participate in the same VB as regular ones, even
 * in most display lists.
 */
static void
_tnl_Rectf( GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2 )
{
   GET_CURRENT_CONTEXT(ctx);

   if (_tnl_hard_begin( ctx, GL_QUADS )) {
      _tnl_vertex2f( ctx, x1, y1 );
      _tnl_vertex2f( ctx, x2, y1 );
      _tnl_vertex2f( ctx, x2, y2 );
      _tnl_vertex2f( ctx, x1, y2 );
      _tnl_end( ctx );
   }
}

static void
_tnl_Materialfv( GLenum face, GLenum pname, const GLfloat *params )
{
   GET_CURRENT_CONTEXT(ctx);
   struct immediate *IM = TNL_CURRENT_IM(ctx);
   GLuint count = IM->Count;
   struct gl_material *mat;
   GLuint bitmask = _mesa_material_bitmask(ctx, face, pname, ~0, "Materialfv");

   if (bitmask == 0)
      return;

   if (!(IM->Flag[count] & VERT_MATERIAL)) {
      if (!IM->Material) {
	 IM->Material = (GLmaterial (*)[2]) MALLOC( sizeof(GLmaterial) *
						    IMM_SIZE * 2 );
	 IM->MaterialMask = (GLuint *) MALLOC( sizeof(GLuint) * IMM_SIZE ); 
      }
      else if (IM->MaterialOrMask & ~bitmask) {
	 _mesa_copy_material_pairs( IM->Material[count], 
				 IM->Material[IM->LastMaterial],
				 IM->MaterialOrMask & ~bitmask );
      }

      IM->Flag[count] |= VERT_MATERIAL;
      IM->LastMaterial = count;
      IM->MaterialMask[count] = 0;
   }
   
   IM->MaterialOrMask |= bitmask;
   IM->MaterialMask[count] |= bitmask;
   mat = IM->Material[count];

   if (bitmask & FRONT_AMBIENT_BIT) {
      COPY_4FV( mat[0].Ambient, params );
   }
   if (bitmask & BACK_AMBIENT_BIT) {
      COPY_4FV( mat[1].Ambient, params );
   }
   if (bitmask & FRONT_DIFFUSE_BIT) {
      COPY_4FV( mat[0].Diffuse, params );
   }
   if (bitmask & BACK_DIFFUSE_BIT) {
      COPY_4FV( mat[1].Diffuse, params );
   }
   if (bitmask & FRONT_SPECULAR_BIT) {
      COPY_4FV( mat[0].Specular, params );
   }
   if (bitmask & BACK_SPECULAR_BIT) {
      COPY_4FV( mat[1].Specular, params );
   }
   if (bitmask & FRONT_EMISSION_BIT) {
      COPY_4FV( mat[0].Emission, params );
   }
   if (bitmask & BACK_EMISSION_BIT) {
      COPY_4FV( mat[1].Emission, params );
   }
   if (bitmask & FRONT_SHININESS_BIT) {
      GLfloat shininess = CLAMP( params[0], 0.0F, 128.0F );
      mat[0].Shininess = shininess;
   }
   if (bitmask & BACK_SHININESS_BIT) {
      GLfloat shininess = CLAMP( params[0], 0.0F, 128.0F );
      mat[1].Shininess = shininess;
   }
   if (bitmask & FRONT_INDEXES_BIT) {
      mat[0].AmbientIndex = params[0];
      mat[0].DiffuseIndex = params[1];
      mat[0].SpecularIndex = params[2];
   }
   if (bitmask & BACK_INDEXES_BIT) {
      mat[1].AmbientIndex = params[0];
      mat[1].DiffuseIndex = params[1];
      mat[1].SpecularIndex = params[2];
   }
}

void _tnl_imm_vtxfmt_init( GLcontext *ctx )
{
   GLvertexformat *vfmt = &(TNL_CONTEXT(ctx)->vtxfmt);

   /* All begin/end operations are handled by this vertex format:
    */
   vfmt->ArrayElement = _tnl_ArrayElement;
   vfmt->Begin = _tnl_Begin;
   vfmt->Color3f = _tnl_Color3f;
   vfmt->Color3fv = _tnl_Color3fv;
   vfmt->Color3ub = _tnl_Color3ub;
   vfmt->Color3ubv = _tnl_Color3ubv;
   vfmt->Color4f = _tnl_Color4f;
   vfmt->Color4fv = _tnl_Color4fv;
   vfmt->Color4ub = _tnl_Color4ub;
   vfmt->Color4ubv = _tnl_Color4ubv;
   vfmt->EdgeFlag = _tnl_EdgeFlag;
   vfmt->EdgeFlagv = _tnl_EdgeFlagv;
   vfmt->End = _tnl_End;
   vfmt->EvalCoord1f = _tnl_EvalCoord1f;
   vfmt->EvalCoord1fv = _tnl_EvalCoord1fv;
   vfmt->EvalCoord2f = _tnl_EvalCoord2f;
   vfmt->EvalCoord2fv = _tnl_EvalCoord2fv;
   vfmt->EvalPoint1 = _tnl_EvalPoint1;
   vfmt->EvalPoint2 = _tnl_EvalPoint2;
   vfmt->FogCoordfEXT = _tnl_FogCoordfEXT;
   vfmt->FogCoordfvEXT = _tnl_FogCoordfvEXT;
   vfmt->Indexi = _tnl_Indexi;
   vfmt->Indexiv = _tnl_Indexiv;
   vfmt->Materialfv = _tnl_Materialfv;
   vfmt->MultiTexCoord1fARB = _tnl_MultiTexCoord1fARB;
   vfmt->MultiTexCoord1fvARB = _tnl_MultiTexCoord1fvARB;
   vfmt->MultiTexCoord2fARB = _tnl_MultiTexCoord2fARB;
   vfmt->MultiTexCoord2fvARB = _tnl_MultiTexCoord2fvARB;
   vfmt->MultiTexCoord3fARB = _tnl_MultiTexCoord3fARB;
   vfmt->MultiTexCoord3fvARB = _tnl_MultiTexCoord3fvARB;
   vfmt->MultiTexCoord4fARB = _tnl_MultiTexCoord4fARB;
   vfmt->MultiTexCoord4fvARB = _tnl_MultiTexCoord4fvARB;
   vfmt->Normal3f = _tnl_Normal3f;
   vfmt->Normal3fv = _tnl_Normal3fv;
   vfmt->SecondaryColor3fEXT = _tnl_SecondaryColor3fEXT;
   vfmt->SecondaryColor3fvEXT = _tnl_SecondaryColor3fvEXT;
   vfmt->SecondaryColor3ubEXT = _tnl_SecondaryColor3ubEXT;
   vfmt->SecondaryColor3ubvEXT = _tnl_SecondaryColor3ubvEXT;
   vfmt->TexCoord1f = _tnl_TexCoord1f;
   vfmt->TexCoord1fv = _tnl_TexCoord1fv;
   vfmt->TexCoord2f = _tnl_TexCoord2f;
   vfmt->TexCoord2fv = _tnl_TexCoord2fv;
   vfmt->TexCoord3f = _tnl_TexCoord3f;
   vfmt->TexCoord3fv = _tnl_TexCoord3fv;
   vfmt->TexCoord4f = _tnl_TexCoord4f;
   vfmt->TexCoord4fv = _tnl_TexCoord4fv;
   vfmt->Vertex2f = _tnl_Vertex2f;
   vfmt->Vertex2fv = _tnl_Vertex2fv;
   vfmt->Vertex3f = _tnl_Vertex3f;
   vfmt->Vertex3fv = _tnl_Vertex3fv;
   vfmt->Vertex4f = _tnl_Vertex4f;
   vfmt->Vertex4fv = _tnl_Vertex4fv;

   /* Outside begin/end functions (from t_varray.c, t_eval.c, ...): 
    */
   vfmt->Rectf = _tnl_Rectf;

   /* Just use the core function:
    */
   vfmt->CallList = _mesa_CallList; 

   vfmt->prefer_float_colors = GL_FALSE;
}