/*
 * Copyright 2008 Luis Busquets
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include "config.h"
#include "wine/port.h"
#include "wine/debug.h"
#include "windef.h"
#include "wingdi.h"
#include "d3dx9.h"

WINE_DEFAULT_DEBUG_CHANNEL(d3dx);

UINT WINAPI D3DXGetShaderSize(const DWORD *byte_code)
{
    const DWORD *ptr = byte_code;

    TRACE("byte_code %p\n", byte_code);

    if (!ptr) return 0;

    /* Look for the END token, skipping the VERSION token */
    while (*++ptr != D3DSIO_END)
    {
        /* Skip comments */
        if ((*ptr & D3DSI_OPCODE_MASK) == D3DSIO_COMMENT)
        {
            ptr += ((*ptr & D3DSI_COMMENTSIZE_MASK) >> D3DSI_COMMENTSIZE_SHIFT);
        }
    }
    ++ptr;

    /* Return the shader size in bytes */
    return (ptr - byte_code) * sizeof(*ptr);
}