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/* $Id: ac_context.c,v 1.1 2003-02-28 11:49:40 pj Exp $ */

/*

 * Mesa 3-D graphics library

 * Version:  4.1

 *

 * Copyright (C) 1999-2002  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 <keith@tungstengraphics.com>

 */

#include "glheader.h"

#include "macros.h"

#include "imports.h"

#include "mmath.h"

#include "mtypes.h"

#include "array_cache/ac_context.h"

/*

 * Initialize the array fallbacks.  That is, by default the fallback arrays

 * point into the current vertex attribute values in ctx->Current.Attrib[]

 */

static void _ac_fallbacks_init( GLcontext *ctx )

{

   ACcontext *ac = AC_CONTEXT(ctx);

   struct gl_client_array *cl;

   GLuint i;

   cl = &ac->Fallback.Normal;

   cl->Size = 3;

   cl->Type = GL_FLOAT;

   cl->Stride = 0;

   cl->StrideB = 0;

   cl->Ptr = (void *) ctx->Current.Attrib[VERT_ATTRIB_NORMAL];

   cl->Enabled = 1;

   cl->Flags = CA_CLIENT_DATA;  /* hack */

   cl = &ac->Fallback.Color;

   cl->Size = 4;

   cl->Type = GL_FLOAT;

   cl->Stride = 0;

   cl->StrideB = 0;

   cl->Ptr = (void *) ctx->Current.Attrib[VERT_ATTRIB_COLOR0];

   cl->Enabled = 1;

   cl->Flags = CA_CLIENT_DATA;  /* hack */

   cl = &ac->Fallback.SecondaryColor;

   cl->Size = 3;

   cl->Type = GL_FLOAT;

   cl->Stride = 0;

   cl->StrideB = 0;

   cl->Ptr = (void *) ctx->Current.Attrib[VERT_ATTRIB_COLOR1];

   cl->Enabled = 1;

   cl->Flags = CA_CLIENT_DATA;  /* hack */

   cl = &ac->Fallback.FogCoord;

   cl->Size = 1;

   cl->Type = GL_FLOAT;

   cl->Stride = 0;

   cl->StrideB = 0;

   cl->Ptr = (void *) &ctx->Current.Attrib[VERT_ATTRIB_FOG];

   cl->Enabled = 1;

   cl->Flags = CA_CLIENT_DATA;  /* hack */

   cl = &ac->Fallback.Index;

   cl->Size = 1;

   cl->Type = GL_UNSIGNED_INT;

   cl->Stride = 0;

   cl->StrideB = 0;

   cl->Ptr = (void *) &ctx->Current.Index;

   cl->Enabled = 1;

   cl->Flags = CA_CLIENT_DATA;  /* hack */

   for (i = 0 ; i < MAX_TEXTURE_UNITS ; i++) {

      cl = &ac->Fallback.TexCoord[i];

      cl->Size = 4;

      cl->Type = GL_FLOAT;

      cl->Stride = 0;

      cl->StrideB = 0;

      cl->Ptr = (void *) ctx->Current.Attrib[VERT_ATTRIB_TEX0 + i];

      cl->Enabled = 1;

      cl->Flags = CA_CLIENT_DATA;       /* hack */

   }

   cl = &ac->Fallback.EdgeFlag;

   cl->Size = 1;

   cl->Type = GL_UNSIGNED_BYTE;

   cl->Stride = 0;

   cl->StrideB = 0;

   cl->Ptr = (void *) &ctx->Current.EdgeFlag;

   cl->Enabled = 1;

   cl->Flags = CA_CLIENT_DATA;  /* hack */

   for (i = 0; i < VERT_ATTRIB_MAX; i++) {

      cl = &ac->Fallback.Attrib[i];

      cl->Size = 4;

      cl->Type = GL_FLOAT;

      cl->Stride = 0;

      cl->StrideB = 0;

      cl->Ptr = (void *) ctx->Current.Attrib[i];

      cl->Enabled = 1;

      cl->Flags = CA_CLIENT_DATA; /* hack */

   }

}

/*

 * Initialize the array cache pointers, types, strides, etc.

 */

static void _ac_cache_init( GLcontext *ctx )

{

   ACcontext *ac = AC_CONTEXT(ctx);

   struct gl_client_array *cl;

   GLuint size = ctx->Const.MaxArrayLockSize + MAX_CLIPPED_VERTICES;

   GLuint i;

   cl = &ac->Cache.Vertex;

   cl->Size = 4;

   cl->Type = GL_FLOAT;

   cl->Stride = 0;

   cl->StrideB = 4 * sizeof(GLfloat);

   cl->Ptr = MALLOC( cl->StrideB * size );

   cl->Enabled = 1;

   cl->Flags = 0;

   cl = &ac->Cache.Normal;

   cl->Size = 3;

   cl->Type = GL_FLOAT;

   cl->Stride = 0;

   cl->StrideB = 3 * sizeof(GLfloat);

   cl->Ptr = MALLOC( cl->StrideB * size );

   cl->Enabled = 1;

   cl->Flags = 0;

   cl = &ac->Cache.Color;

   cl->Size = 4;

   cl->Type = GL_FLOAT;

   cl->Stride = 0;

   cl->StrideB = 4 * sizeof(GLfloat);

   cl->Ptr = MALLOC( cl->StrideB * size );

   cl->Enabled = 1;

   cl->Flags = 0;

   cl = &ac->Cache.SecondaryColor;

   cl->Size = 3;

   cl->Type = GL_FLOAT;

   cl->Stride = 0;

   cl->StrideB = 4 * sizeof(GLfloat);

   cl->Ptr = MALLOC( cl->StrideB * size );

   cl->Enabled = 1;

   cl->Flags = 0;

   cl = &ac->Cache.FogCoord;

   cl->Size = 1;

   cl->Type = GL_FLOAT;

   cl->Stride = 0;

   cl->StrideB = sizeof(GLfloat);

   cl->Ptr = MALLOC( cl->StrideB * size );

   cl->Enabled = 1;

   cl->Flags = 0;

   cl = &ac->Cache.Index;

   cl->Size = 1;

   cl->Type = GL_UNSIGNED_INT;

   cl->Stride = 0;

   cl->StrideB = sizeof(GLuint);

   cl->Ptr = MALLOC( cl->StrideB * size );

   cl->Enabled = 1;

   cl->Flags = 0;

   for (i = 0; i < MAX_TEXTURE_UNITS; i++) {

      cl = &ac->Cache.TexCoord[i];

      cl->Size = 4;

      cl->Type = GL_FLOAT;

      cl->Stride = 0;

      cl->StrideB = 4 * sizeof(GLfloat);

      cl->Ptr = MALLOC( cl->StrideB * size );

      cl->Enabled = 1;

      cl->Flags = 0;

   }

   cl = &ac->Cache.EdgeFlag;

   cl->Size = 1;

   cl->Type = GL_UNSIGNED_BYTE;

   cl->Stride = 0;

   cl->StrideB = sizeof(GLubyte);

   cl->Ptr = MALLOC( cl->StrideB * size );

   cl->Enabled = 1;

   cl->Flags = 0;

   for (i = 0 ; i < VERT_ATTRIB_MAX; i++) {

      cl = &ac->Cache.Attrib[i];

      cl->Size = 4;

      cl->Type = GL_FLOAT;

      cl->Stride = 0;

      cl->StrideB = 4 * sizeof(GLfloat);

      cl->Ptr = MALLOC( cl->StrideB * size );

      cl->Enabled = 1;

      cl->Flags = 0;

   }

}

/* This storage used to hold translated client data if type or stride

 * need to be fixed.

 */

static void _ac_elts_init( GLcontext *ctx )

{

   ACcontext *ac = AC_CONTEXT(ctx);

   GLuint size = 1000;

   ac->Elts = (GLuint *)MALLOC( sizeof(GLuint) * size );

   ac->elt_size = size;

}

static void _ac_raw_init( GLcontext *ctx )

{

   ACcontext *ac = AC_CONTEXT(ctx);

   GLuint i;

   ac->Raw.Color = ac->Fallback.Color;

   ac->Raw.EdgeFlag = ac->Fallback.EdgeFlag;

   ac->Raw.FogCoord = ac->Fallback.FogCoord;

   ac->Raw.Index = ac->Fallback.Index;

   ac->Raw.Normal = ac->Fallback.Normal;

   ac->Raw.SecondaryColor = ac->Fallback.SecondaryColor;

   ac->Raw.Vertex = ctx->Array.Vertex;

   ac->IsCached.Color = GL_FALSE;

   ac->IsCached.EdgeFlag = GL_FALSE;

   ac->IsCached.FogCoord = GL_FALSE;

   ac->IsCached.Index = GL_FALSE;

   ac->IsCached.Normal = GL_FALSE;

   ac->IsCached.SecondaryColor = GL_FALSE;

   ac->IsCached.Vertex = GL_FALSE;

   for (i = 0 ; i < MAX_TEXTURE_UNITS ; i++) {

      ac->Raw.TexCoord[i] = ac->Fallback.TexCoord[i];

      ac->IsCached.TexCoord[i] = GL_FALSE;

   }

   for (i = 0 ; i < VERT_ATTRIB_MAX ; i++) {

      ac->Raw.Attrib[i] = ac->Fallback.Attrib[i];

      ac->IsCached.Attrib[i] = GL_FALSE;

   }

}

GLboolean _ac_CreateContext( GLcontext *ctx )

{

   ctx->acache_context = CALLOC(sizeof(ACcontext));

   if (ctx->acache_context) {

      _ac_cache_init( ctx );

      _ac_fallbacks_init( ctx );

      _ac_raw_init( ctx );

      _ac_elts_init( ctx );

      return GL_TRUE;

   }

   return GL_FALSE;

}

void _ac_DestroyContext( GLcontext *ctx )

{

   ACcontext *ac = AC_CONTEXT(ctx);

   GLint i;

   if (ac->Cache.Vertex.Ptr) FREE( ac->Cache.Vertex.Ptr );

   if (ac->Cache.Normal.Ptr) FREE( ac->Cache.Normal.Ptr );

   if (ac->Cache.Color.Ptr) FREE( ac->Cache.Color.Ptr );

   if (ac->Cache.SecondaryColor.Ptr) FREE( ac->Cache.SecondaryColor.Ptr );

   if (ac->Cache.EdgeFlag.Ptr) FREE( ac->Cache.EdgeFlag.Ptr );

   if (ac->Cache.Index.Ptr) FREE( ac->Cache.Index.Ptr );

   if (ac->Cache.FogCoord.Ptr) FREE( ac->Cache.FogCoord.Ptr );

   for (i = 0; i < MAX_TEXTURE_UNITS; i++) {

      if (ac->Cache.TexCoord[i].Ptr)

         FREE( ac->Cache.TexCoord[i].Ptr );

   }

   for (i = 0; i < VERT_ATTRIB_MAX; i++) {

      if (ac->Cache.Attrib[i].Ptr)

         FREE( ac->Cache.Attrib[i].Ptr );

   }

   if (ac->Elts) FREE( ac->Elts );

   /* Free the context structure itself */

   FREE(ac);

   ctx->acache_context = NULL;

}

void _ac_InvalidateState( GLcontext *ctx, GLuint new_state )

{

   AC_CONTEXT(ctx)->NewState |= new_state;

   AC_CONTEXT(ctx)->NewArrayState |= ctx->Array.NewState;

}