source: vbox/trunk/src/VBox/Additions/WINNT/Graphics/crOpenGL/pack/packspu_getstring.c@ 15844

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

#include "packspu.h"
#include "cr_packfunctions.h"
#include "state/cr_statefuncs.h"
#include "cr_string.h"
#include "packspu_proto.h"

static const GLubyte *
GetExtensions(void)
{
        GLubyte return_value[10*1000];
        const GLubyte *extensions, *ext;
        GET_THREAD(thread);
        int writeback = 1;

        if (pack_spu.swap)
        {
                crPackGetStringSWAP( GL_EXTENSIONS, return_value, &writeback );
        }
        else
        {
                crPackGetString( GL_EXTENSIONS, return_value, &writeback );
        }
        packspuFlush( (void *) thread );

        while (writeback)
                crNetRecv();

        CRASSERT(crStrlen((char *)return_value) < 10*1000);

        /* OK, we got the result from the server.  Now we have to
         * intersect is with the set of extensions that Chromium understands
         * and tack on the Chromium-specific extensions.
         */
        extensions = return_value;
        ext = crStateMergeExtensions(1, &extensions);

        return ext;  /* XXX we should return a static string here! */
}


static GLfloat
GetVersionString(void)
{
        GLubyte return_value[100];
        GET_THREAD(thread);
        int writeback = 1;
        GLfloat version;

        if (pack_spu.swap)
                crPackGetStringSWAP( GL_VERSION, return_value, &writeback );
        else
                crPackGetString( GL_VERSION, return_value, &writeback );
        packspuFlush( (void *) thread );

        while (writeback)
                crNetRecv();

        CRASSERT(crStrlen((char *)return_value) < 100);

        version = crStrToFloat((char *) return_value);
        version = crStateComputeVersion(version);

        return version;
}


const GLubyte * PACKSPU_APIENTRY packspu_GetString( GLenum name )
{
        GET_CONTEXT(ctx);
        if (name == GL_EXTENSIONS)
        {
                return GetExtensions();
        }
        else if (name == GL_VERSION)
        {
                float version = GetVersionString();
                sprintf(ctx->glVersion, "%g Chromium %s", version, CR_VERSION_STRING);
                return (const GLubyte *) ctx->glVersion;
        }
        else
        {
                return crStateGetString(name);
        }
}