SharedOpenGL/expando/expandospu_init.c

/* $Id$ */
/* Copyright (c) 2001, Stanford University
 * All rights reserved
 *
 * See the file LICENSE.txt for information on redistributing this software.
 */

#include <stdio.h>
#include "cr_spu.h"
#include "cr_dlm.h"
#include "cr_hash.h"
#include "expandospu.h"

ExpandoSPU expando_spu;

static SPUFunctions expando_functions = {
    NULL, /* CHILD COPY */
    NULL, /* DATA */
    _cr_expando_table /* THE ACTUAL FUNCTIONS */
};

static SPUFunctions *
expandoSPUInit( int id, SPU *child, SPU *self,
                                 unsigned int context_id,
                                 unsigned int num_contexts )
{

    (void) self;
    (void) context_id;
    (void) num_contexts;

    expando_spu.id = id;
    expando_spu.has_child = 0;
    expando_spu.server = NULL;
    if (child)
    {
        crSPUInitDispatchTable( &(expando_spu.child) );
        crSPUCopyDispatchTable( &(expando_spu.child), &(child->dispatch_table) );
        expando_spu.has_child = 1;
    }
    crSPUInitDispatchTable( &(expando_spu.super) );
    crSPUCopyDispatchTable( &(expando_spu.super), &(self->superSPU->dispatch_table) );
    expandospuGatherConfiguration();

    /* Expando-specific initialization */
    expando_spu.contextTable = crAllocHashtable();

    /* We'll be using the state tracker for each context */
    crStateInit();

    return &expando_functions;
}

static void
expandoSPUSelfDispatch(SPUDispatchTable *self)
{
    crSPUInitDispatchTable( &(expando_spu.self) );
    crSPUCopyDispatchTable( &(expando_spu.self), self );

    expando_spu.server = (CRServer *)(self->server);
}


static int
expandoSPUCleanup(void)
{
    crFreeHashtable(expando_spu.contextTable, expando_free_context_state);
    crStateDestroy();
    return 1;
}

int
SPULoad( char **name, char **super, SPUInitFuncPtr *init,
                 SPUSelfDispatchFuncPtr *self, SPUCleanupFuncPtr *cleanup,
                 SPUOptionsPtr *options, int *flags )
{
    *name = "expando";
    //*super = "passthrough";
    *super = "render";
    *init = expandoSPUInit;
    *self = expandoSPUSelfDispatch;
    *cleanup = expandoSPUCleanup;
    *options = expandoSPUOptions;
    *flags = (SPU_NO_PACKER|SPU_NOT_TERMINAL|SPU_MAX_SERVERS_ZERO);

    return 1;
}