dlls/d3dx9_36/shader.c

   1 /*
   2  * Copyright 2008 Luis Busquets
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include "config.h"
  20 #include "wine/port.h"
  21 #include "wine/debug.h"
  22 #include "windef.h"
  23 #include "wingdi.h"
  24 #include "d3dx9.h"
  25
  26 WINE_DEFAULT_DEBUG_CHANNEL(d3dx);
  27
  28 UINT WINAPI D3DXGetShaderSize(const DWORD *byte_code)
  29 {
  30     const DWORD *ptr = byte_code;
  31
  32     TRACE("byte_code %p\n", byte_code);
  33
  34     if (!ptr) return 0;
  35
  36     /* Look for the END token, skipping the VERSION token */
  37     while (*++ptr != D3DSIO_END)
  38     {
  39         /* Skip comments */
  40         if ((*ptr & D3DSI_OPCODE_MASK) == D3DSIO_COMMENT)
  41         {
  42             ptr += ((*ptr & D3DSI_COMMENTSIZE_MASK) >> D3DSI_COMMENTSIZE_SHIFT);
  43         }
  44     }
  45     ++ptr;
  46
  47     /* Return the shader size in bytes */
  48     return (ptr - byte_code) * sizeof(*ptr);
  49 }
  50
  51 DWORD WINAPI D3DXGetShaderVersion(const DWORD *byte_code)
  52 {
  53     TRACE("byte_code %p\n", byte_code);
  54
  55     return byte_code ? *byte_code : 0;
  56 }