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 LPCSTR WINAPI D3DXGetPixelShaderProfile(LPDIRECT3DDEVICE9 device)
  29 {
  30     D3DCAPS9 caps;
  31
  32     TRACE("device %p\n", device);
  33
  34     if (!device) return NULL;
  35
  36     IDirect3DDevice9_GetDeviceCaps(device,&caps);
  37
  38     switch (caps.PixelShaderVersion)
  39     {
  40     case D3DPS_VERSION(1, 1):
  41         return "ps_1_1";
  42
  43     case D3DPS_VERSION(1, 2):
  44         return "ps_1_2";
  45
  46     case D3DPS_VERSION(1, 3):
  47         return "ps_1_3";
  48
  49     case D3DPS_VERSION(1, 4):
  50         return "ps_1_4";
  51
  52     case D3DPS_VERSION(2, 0):
  53         if ((caps.PS20Caps.NumTemps>=22)                          &&
  54             (caps.PS20Caps.Caps&D3DPS20CAPS_ARBITRARYSWIZZLE)     &&
  55             (caps.PS20Caps.Caps&D3DPS20CAPS_GRADIENTINSTRUCTIONS) &&
  56             (caps.PS20Caps.Caps&D3DPS20CAPS_PREDICATION)          &&
  57             (caps.PS20Caps.Caps&D3DPS20CAPS_NODEPENDENTREADLIMIT) &&
  58             (caps.PS20Caps.Caps&D3DPS20CAPS_NOTEXINSTRUCTIONLIMIT))
  59         {
  60             return "ps_2_a";
  61         }
  62         if ((caps.PS20Caps.NumTemps>=32)                          &&
  63             (caps.PS20Caps.Caps&D3DPS20CAPS_NOTEXINSTRUCTIONLIMIT))
  64         {
  65             return "ps_2_b";
  66         }
  67         return "ps_2_0";
  68
  69     case D3DPS_VERSION(3, 0):
  70         return "ps_3_0";
  71     }
  72
  73     return NULL;
  74 }
  75
  76 UINT WINAPI D3DXGetShaderSize(const DWORD *byte_code)
  77 {
  78     const DWORD *ptr = byte_code;
  79
  80     TRACE("byte_code %p\n", byte_code);
  81
  82     if (!ptr) return 0;
  83
  84     /* Look for the END token, skipping the VERSION token */
  85     while (*++ptr != D3DSIO_END)
  86     {
  87         /* Skip comments */
  88         if ((*ptr & D3DSI_OPCODE_MASK) == D3DSIO_COMMENT)
  89         {
  90             ptr += ((*ptr & D3DSI_COMMENTSIZE_MASK) >> D3DSI_COMMENTSIZE_SHIFT);
  91         }
  92     }
  93     ++ptr;
  94
  95     /* Return the shader size in bytes */
  96     return (ptr - byte_code) * sizeof(*ptr);
  97 }
  98
  99 DWORD WINAPI D3DXGetShaderVersion(const DWORD *byte_code)
 100 {
 101     TRACE("byte_code %p\n", byte_code);
 102
 103     return byte_code ? *byte_code : 0;
 104 }
 105
 106 LPCSTR WINAPI D3DXGetVertexShaderProfile(LPDIRECT3DDEVICE9 device)
 107 {
 108     D3DCAPS9 caps;
 109
 110     TRACE("device %p\n", device);
 111
 112     if (!device) return NULL;
 113
 114     IDirect3DDevice9_GetDeviceCaps(device,&caps);
 115
 116     switch (caps.VertexShaderVersion)
 117     {
 118     case D3DVS_VERSION(1, 1):
 119         return "vs_1_1";
 120     case D3DVS_VERSION(2, 0):
 121         if ((caps.VS20Caps.NumTemps>=13) &&
 122             (caps.VS20Caps.DynamicFlowControlDepth==24) &&
 123             (caps.VS20Caps.Caps&D3DPS20CAPS_PREDICATION))
 124         {
 125             return "vs_2_a";
 126         }
 127         return "vs_2_0";
 128     case D3DVS_VERSION(3, 0):
 129         return "vs_3_0";
 130     }
 131
 132     return NULL;
 133 }