git.oblomov.eu Git - wine/blob - dlls/wined3d/basetexture.c

   1 /*
   2  * IWineD3DBaseTexture Implementation
   3  *
   4  * Copyright 2002-2004 Jason Edmeades
   5  * Copyright 2002-2004 Raphael Junqueira
   6  * Copyright 2005 Oliver Stieber
   7  * Copyright 2007-2008 Stefan Dösinger for CodeWeavers
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 #include "config.h"
  25 #include "wined3d_private.h"
  26
  27 WINE_DEFAULT_DEBUG_CHANNEL(d3d_texture);
  28 #define GLINFO_LOCATION This->resource.wineD3DDevice->adapter->gl_info
  29
  30 HRESULT basetexture_init(IWineD3DBaseTextureImpl *texture, UINT levels, WINED3DRESOURCETYPE resource_type,
  31         IWineD3DDeviceImpl *device, UINT size, DWORD usage, const struct GlPixelFormatDesc *format_desc,
  32         WINED3DPOOL pool, IUnknown *parent)
  33 {
  34     HRESULT hr;
  35
  36     hr = resource_init((IWineD3DResource *)texture, resource_type, device, size, usage, format_desc, pool, parent);
  37     if (FAILED(hr))
  38     {
  39         WARN("Failed to initialize resource, returning %#x\n", hr);
  40         return hr;
  41     }
  42
  43     texture->baseTexture.levels = levels;
  44     texture->baseTexture.filterType = (usage & WINED3DUSAGE_AUTOGENMIPMAP) ? WINED3DTEXF_LINEAR : WINED3DTEXF_NONE;
  45     texture->baseTexture.LOD = 0;
  46     texture->baseTexture.dirty = TRUE;
  47     texture->baseTexture.srgbDirty = TRUE;
  48     texture->baseTexture.is_srgb = FALSE;
  49     texture->baseTexture.pow2Matrix_identity = TRUE;
  50
  51     if (texture->resource.format_desc->Flags & WINED3DFMT_FLAG_FILTERING)
  52     {
  53         texture->baseTexture.minMipLookup = minMipLookup;
  54         texture->baseTexture.magLookup = magLookup;
  55     }
  56     else
  57     {
  58         texture->baseTexture.minMipLookup = minMipLookup_noFilter;
  59         texture->baseTexture.magLookup = magLookup_noFilter;
  60     }
  61
  62     return WINED3D_OK;
  63 }
  64
  65 void basetexture_cleanup(IWineD3DBaseTexture *iface)
  66 {
  67     basetexture_unload(iface);
  68     resource_cleanup((IWineD3DResource *)iface);
  69 }
  70
  71 void basetexture_unload(IWineD3DBaseTexture *iface)
  72 {
  73     IWineD3DTextureImpl *This = (IWineD3DTextureImpl *)iface;
  74     IWineD3DDeviceImpl *device = This->resource.wineD3DDevice;
  75
  76     if(This->baseTexture.textureName) {
  77         ActivateContext(device, NULL, CTXUSAGE_RESOURCELOAD);
  78         ENTER_GL();
  79         glDeleteTextures(1, &This->baseTexture.textureName);
  80         This->baseTexture.textureName = 0;
  81         LEAVE_GL();
  82     }
  83
  84     if(This->baseTexture.srgbTextureName) {
  85         ActivateContext(device, NULL, CTXUSAGE_RESOURCELOAD);
  86         ENTER_GL();
  87         glDeleteTextures(1, &This->baseTexture.srgbTextureName);
  88         This->baseTexture.srgbTextureName = 0;
  89         LEAVE_GL();
  90     }
  91     This->baseTexture.dirty = TRUE;
  92     This->baseTexture.srgbDirty = TRUE;
  93 }
  94
  95 /* There is no OpenGL equivalent of setLOD, getLOD. All they do anyway is prioritize texture loading
  96  * so just pretend that they work unless something really needs a failure. */
  97 DWORD basetexture_set_lod(IWineD3DBaseTexture *iface, DWORD LODNew)
  98 {
  99     IWineD3DBaseTextureImpl *This = (IWineD3DBaseTextureImpl *)iface;
 100
 101     if (This->resource.pool != WINED3DPOOL_MANAGED) {
 102         return  WINED3DERR_INVALIDCALL;
 103     }
 104
 105     if(LODNew >= This->baseTexture.levels)
 106         LODNew = This->baseTexture.levels - 1;
 107      This->baseTexture.LOD = LODNew;
 108
 109     TRACE("(%p) : set bogus LOD to %d\n", This, This->baseTexture.LOD);
 110
 111     return This->baseTexture.LOD;
 112 }
 113
 114 DWORD basetexture_get_lod(IWineD3DBaseTexture *iface)
 115 {
 116     IWineD3DBaseTextureImpl *This = (IWineD3DBaseTextureImpl *)iface;
 117
 118     if (This->resource.pool != WINED3DPOOL_MANAGED) {
 119         return  WINED3DERR_INVALIDCALL;
 120     }
 121
 122     TRACE("(%p) : returning %d\n", This, This->baseTexture.LOD);
 123
 124     return This->baseTexture.LOD;
 125 }
 126
 127 DWORD basetexture_get_level_count(IWineD3DBaseTexture *iface)
 128 {
 129     IWineD3DBaseTextureImpl *This = (IWineD3DBaseTextureImpl *)iface;
 130     TRACE("(%p) : returning %d\n", This, This->baseTexture.levels);
 131     return This->baseTexture.levels;
 132 }
 133
 134 HRESULT basetexture_set_autogen_filter_type(IWineD3DBaseTexture *iface, WINED3DTEXTUREFILTERTYPE FilterType)
 135 {
 136   IWineD3DBaseTextureImpl *This = (IWineD3DBaseTextureImpl *)iface;
 137   IWineD3DDeviceImpl *device = This->resource.wineD3DDevice;
 138   UINT textureDimensions = IWineD3DBaseTexture_GetTextureDimensions(iface);
 139
 140   if (!(This->resource.usage & WINED3DUSAGE_AUTOGENMIPMAP)) {
 141       TRACE("(%p) : returning invalid call\n", This);
 142       return WINED3DERR_INVALIDCALL;
 143   }
 144   if(This->baseTexture.filterType != FilterType) {
 145       /* What about multithreading? Do we want all the context overhead just to set this value?
 146        * Or should we delay the applying until the texture is used for drawing? For now, apply
 147        * immediately.
 148        */
 149       ActivateContext(device, NULL, CTXUSAGE_RESOURCELOAD);
 150       ENTER_GL();
 151       glBindTexture(textureDimensions, This->baseTexture.textureName);
 152       checkGLcall("glBindTexture");
 153       switch(FilterType) {
 154           case WINED3DTEXF_NONE:
 155           case WINED3DTEXF_POINT:
 156               glTexParameteri(textureDimensions, GL_GENERATE_MIPMAP_HINT_SGIS, GL_FASTEST);
 157               checkGLcall("glTexParameteri(textureDimensions, GL_GENERATE_MIPMAP_HINT_SGIS, GL_FASTEST)");
 158
 159               break;
 160           case WINED3DTEXF_LINEAR:
 161               glTexParameteri(textureDimensions, GL_GENERATE_MIPMAP_HINT_SGIS, GL_NICEST);
 162               checkGLcall("glTexParameteri(textureDimensions, GL_GENERATE_MIPMAP_HINT_SGIS, GL_NICEST)");
 163
 164               break;
 165           default:
 166               WARN("Unexpected filter type %d, setting to GL_NICEST\n", FilterType);
 167               glTexParameteri(textureDimensions, GL_GENERATE_MIPMAP_HINT_SGIS, GL_NICEST);
 168               checkGLcall("glTexParameteri(textureDimensions, GL_GENERATE_MIPMAP_HINT_SGIS, GL_NICEST)");
 169       }
 170       LEAVE_GL();
 171   }
 172   This->baseTexture.filterType = FilterType;
 173   TRACE("(%p) :\n", This);
 174   return WINED3D_OK;
 175 }
 176
 177 WINED3DTEXTUREFILTERTYPE basetexture_get_autogen_filter_type(IWineD3DBaseTexture *iface)
 178 {
 179     IWineD3DBaseTextureImpl *This = (IWineD3DBaseTextureImpl *)iface;
 180
 181     FIXME("(%p) : stub\n", This);
 182
 183     return This->baseTexture.filterType;
 184 }
 185
 186 void basetexture_generate_mipmaps(IWineD3DBaseTexture *iface)
 187 {
 188   IWineD3DBaseTextureImpl *This = (IWineD3DBaseTextureImpl *)iface;
 189   /* TODO: implement filters using GL_SGI_generate_mipmaps http://oss.sgi.com/projects/ogl-sample/registry/SGIS/generate_mipmap.txt */
 190   FIXME("(%p) : stub\n", This);
 191   return ;
 192 }
 193
 194 BOOL basetexture_set_dirty(IWineD3DBaseTexture *iface, BOOL dirty)
 195 {
 196     BOOL old;
 197     IWineD3DBaseTextureImpl *This = (IWineD3DBaseTextureImpl *)iface;
 198     old = This->baseTexture.dirty || This->baseTexture.srgbDirty;
 199     This->baseTexture.dirty = dirty;
 200     This->baseTexture.srgbDirty = dirty;
 201     return old;
 202 }
 203
 204 BOOL basetexture_get_dirty(IWineD3DBaseTexture *iface)
 205 {
 206     IWineD3DBaseTextureImpl *This = (IWineD3DBaseTextureImpl *)iface;
 207     return This->baseTexture.dirty || This->baseTexture.srgbDirty;
 208 }
 209
 210 /* Context activation is done by the caller. */
 211 HRESULT basetexture_bind(IWineD3DBaseTexture *iface, BOOL srgb, BOOL *set_surface_desc)
 212 {
 213     IWineD3DBaseTextureImpl *This = (IWineD3DBaseTextureImpl *)iface;
 214     HRESULT hr = WINED3D_OK;
 215     UINT textureDimensions;
 216     BOOL isNewTexture = FALSE;
 217     GLuint *texture;
 218     DWORD *states;
 219     TRACE("(%p) : About to bind texture\n", This);
 220
 221     This->baseTexture.is_srgb = srgb; /* SRGB mode cache for PreLoad calls outside drawprim */
 222     if(srgb) {
 223         texture = &This->baseTexture.srgbTextureName;
 224         states = This->baseTexture.srgbstates;
 225     } else {
 226         texture = &This->baseTexture.textureName;
 227         states = This->baseTexture.states;
 228     }
 229
 230     textureDimensions = IWineD3DBaseTexture_GetTextureDimensions(iface);
 231     ENTER_GL();
 232     /* Generate a texture name if we don't already have one */
 233     if (*texture == 0) {
 234         *set_surface_desc = TRUE;
 235         glGenTextures(1, texture);
 236         checkGLcall("glGenTextures");
 237         TRACE("Generated texture %d\n", *texture);
 238         if (This->resource.pool == WINED3DPOOL_DEFAULT) {
 239             /* Tell opengl to try and keep this texture in video ram (well mostly) */
 240             GLclampf tmp;
 241             tmp = 0.9f;
 242             glPrioritizeTextures(1, texture, &tmp);
 243
 244         }
 245         /* Initialise the state of the texture object
 246         to the openGL defaults, not the directx defaults */
 247         states[WINED3DTEXSTA_ADDRESSU]      = WINED3DTADDRESS_WRAP;
 248         states[WINED3DTEXSTA_ADDRESSV]      = WINED3DTADDRESS_WRAP;
 249         states[WINED3DTEXSTA_ADDRESSW]      = WINED3DTADDRESS_WRAP;
 250         states[WINED3DTEXSTA_BORDERCOLOR]   = 0;
 251         states[WINED3DTEXSTA_MAGFILTER]     = WINED3DTEXF_LINEAR;
 252         states[WINED3DTEXSTA_MINFILTER]     = WINED3DTEXF_POINT; /* GL_NEAREST_MIPMAP_LINEAR */
 253         states[WINED3DTEXSTA_MIPFILTER]     = WINED3DTEXF_LINEAR; /* GL_NEAREST_MIPMAP_LINEAR */
 254         states[WINED3DTEXSTA_MAXMIPLEVEL]   = 0;
 255         states[WINED3DTEXSTA_MAXANISOTROPY] = 1;
 256         states[WINED3DTEXSTA_SRGBTEXTURE]   = 0;
 257         states[WINED3DTEXSTA_ELEMENTINDEX]  = 0;
 258         states[WINED3DTEXSTA_DMAPOFFSET]    = 0;
 259         states[WINED3DTEXSTA_TSSADDRESSW]   = WINED3DTADDRESS_WRAP;
 260         IWineD3DBaseTexture_SetDirty(iface, TRUE);
 261         isNewTexture = TRUE;
 262
 263         if(This->resource.usage & WINED3DUSAGE_AUTOGENMIPMAP) {
 264             /* This means double binding the texture at creation, but keeps the code simpler all
 265              * in all, and the run-time path free from additional checks
 266              */
 267             glBindTexture(textureDimensions, *texture);
 268             checkGLcall("glBindTexture");
 269             glTexParameteri(textureDimensions, GL_GENERATE_MIPMAP_SGIS, GL_TRUE);
 270             checkGLcall("glTexParameteri(textureDimensions, GL_GENERATE_MIPMAP_SGIS, GL_TRUE)");
 271         }
 272     } else {
 273         *set_surface_desc = FALSE;
 274     }
 275
 276     /* Bind the texture */
 277     if (*texture != 0) {
 278         glBindTexture(textureDimensions, *texture);
 279         checkGLcall("glBindTexture");
 280         if (isNewTexture) {
 281             /* For a new texture we have to set the textures levels after binding the texture.
 282              * In theory this is all we should ever have to do, but because ATI's drivers are broken, we
 283              * also need to set the texture dimensions before the texture is set
 284              * Beware that texture rectangles do not support mipmapping, but set the maxmiplevel if we're
 285              * relying on the partial GL_ARB_texture_non_power_of_two emulation with texture rectangles
 286              * (ie, do not care for cond_np2 here, just look for GL_TEXTURE_RECTANGLE_ARB)
 287              */
 288             if(textureDimensions != GL_TEXTURE_RECTANGLE_ARB) {
 289                 TRACE("Setting GL_TEXTURE_MAX_LEVEL to %d\n", This->baseTexture.levels - 1);
 290                 glTexParameteri(textureDimensions, GL_TEXTURE_MAX_LEVEL, This->baseTexture.levels - 1);
 291                 checkGLcall("glTexParameteri(textureDimensions, GL_TEXTURE_MAX_LEVEL, This->baseTexture.levels)");
 292             }
 293             if(textureDimensions==GL_TEXTURE_CUBE_MAP_ARB) {
 294                 /* Cubemaps are always set to clamp, regardless of the sampler state. */
 295                 glTexParameteri(textureDimensions, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 296                 glTexParameteri(textureDimensions, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 297                 glTexParameteri(textureDimensions, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
 298             }
 299         }
 300     } else { /* this only happened if we've run out of openGL textures */
 301         WARN("This texture doesn't have an openGL texture assigned to it\n");
 302         hr =  WINED3DERR_INVALIDCALL;
 303     }
 304
 305     LEAVE_GL();
 306     return hr;
 307 }
 308
 309 /* GL locking is done by the caller */
 310 static inline void apply_wrap(const GLint textureDimensions, const DWORD state, const GLint type,
 311                               BOOL cond_np2) {
 312     GLint wrapParm;
 313
 314     if (state < minLookup[WINELOOKUP_WARPPARAM] || state > maxLookup[WINELOOKUP_WARPPARAM]) {
 315         FIXME("Unrecognized or unsupported WINED3DTADDRESS_U value %d\n", state);
 316     } else {
 317         if(textureDimensions==GL_TEXTURE_CUBE_MAP_ARB) {
 318             /* Cubemaps are always set to clamp, regardless of the sampler state. */
 319             wrapParm = GL_CLAMP_TO_EDGE;
 320         } else if(cond_np2) {
 321             if(state == WINED3DTADDRESS_WRAP) {
 322                 wrapParm = GL_CLAMP_TO_EDGE;
 323             } else {
 324                 wrapParm = stateLookup[WINELOOKUP_WARPPARAM][state - minLookup[WINELOOKUP_WARPPARAM]];
 325             }
 326         } else {
 327             wrapParm = stateLookup[WINELOOKUP_WARPPARAM][state - minLookup[WINELOOKUP_WARPPARAM]];
 328         }
 329         TRACE("Setting WRAP_S to %d for %x\n", wrapParm, textureDimensions);
 330         glTexParameteri(textureDimensions, type, wrapParm);
 331         checkGLcall("glTexParameteri(..., type, wrapParm)");
 332     }
 333 }
 334
 335 /* GL locking is done by the caller (state handler) */
 336 void basetexture_apply_state_changes(IWineD3DBaseTexture *iface,
 337         const DWORD textureStates[WINED3D_HIGHEST_TEXTURE_STATE + 1],
 338         const DWORD samplerStates[WINED3D_HIGHEST_SAMPLER_STATE + 1])
 339 {
 340     IWineD3DBaseTextureImpl *This = (IWineD3DBaseTextureImpl *)iface;
 341     DWORD state, *states;
 342     GLint textureDimensions = IWineD3DBaseTexture_GetTextureDimensions(iface);
 343     BOOL cond_np2 = IWineD3DBaseTexture_IsCondNP2(iface);
 344     DWORD aniso;
 345
 346     TRACE("iface %p, textureStates %p, samplerStates %p\n", iface, textureStates, samplerStates);
 347
 348     if(This->baseTexture.is_srgb) {
 349         states = This->baseTexture.srgbstates;
 350     } else {
 351         states = This->baseTexture.states;
 352     }
 353
 354     /* This function relies on the correct texture being bound and loaded. */
 355
 356     if(samplerStates[WINED3DSAMP_ADDRESSU]      != states[WINED3DTEXSTA_ADDRESSU]) {
 357         state = samplerStates[WINED3DSAMP_ADDRESSU];
 358         apply_wrap(textureDimensions, state, GL_TEXTURE_WRAP_S, cond_np2);
 359         states[WINED3DTEXSTA_ADDRESSU] = state;
 360     }
 361
 362     if(samplerStates[WINED3DSAMP_ADDRESSV]      != states[WINED3DTEXSTA_ADDRESSV]) {
 363         state = samplerStates[WINED3DSAMP_ADDRESSV];
 364         apply_wrap(textureDimensions, state, GL_TEXTURE_WRAP_T, cond_np2);
 365         states[WINED3DTEXSTA_ADDRESSV] = state;
 366     }
 367
 368     if(samplerStates[WINED3DSAMP_ADDRESSW]      != states[WINED3DTEXSTA_ADDRESSW]) {
 369         state = samplerStates[WINED3DSAMP_ADDRESSW];
 370         apply_wrap(textureDimensions, state, GL_TEXTURE_WRAP_R, cond_np2);
 371         states[WINED3DTEXSTA_ADDRESSW] = state;
 372     }
 373
 374     if(samplerStates[WINED3DSAMP_BORDERCOLOR]   != states[WINED3DTEXSTA_BORDERCOLOR]) {
 375         float col[4];
 376
 377         state = samplerStates[WINED3DSAMP_BORDERCOLOR];
 378         D3DCOLORTOGLFLOAT4(state, col);
 379         TRACE("Setting border color for %u to %x\n", textureDimensions, state);
 380         glTexParameterfv(textureDimensions, GL_TEXTURE_BORDER_COLOR, &col[0]);
 381         checkGLcall("glTexParameteri(..., GL_TEXTURE_BORDER_COLOR, ...)");
 382         states[WINED3DTEXSTA_BORDERCOLOR] = state;
 383     }
 384
 385     if(samplerStates[WINED3DSAMP_MAGFILTER]     != states[WINED3DTEXSTA_MAGFILTER]) {
 386         GLint glValue;
 387         state = samplerStates[WINED3DSAMP_MAGFILTER];
 388         if (state > WINED3DTEXF_ANISOTROPIC) {
 389             FIXME("Unrecognized or unsupported MAGFILTER* value %d\n", state);
 390         }
 391
 392         glValue = wined3d_gl_mag_filter(This->baseTexture.magLookup,
 393                 min(max(state, WINED3DTEXF_POINT), WINED3DTEXF_LINEAR));
 394         TRACE("ValueMAG=%d setting MAGFILTER to %x\n", state, glValue);
 395         glTexParameteri(textureDimensions, GL_TEXTURE_MAG_FILTER, glValue);
 396
 397         states[WINED3DTEXSTA_MAGFILTER] = state;
 398     }
 399
 400     if((samplerStates[WINED3DSAMP_MINFILTER]     != states[WINED3DTEXSTA_MINFILTER] ||
 401         samplerStates[WINED3DSAMP_MIPFILTER]     != states[WINED3DTEXSTA_MIPFILTER] ||
 402         samplerStates[WINED3DSAMP_MAXMIPLEVEL]   != states[WINED3DTEXSTA_MAXMIPLEVEL])) {
 403         GLint glValue;
 404
 405         states[WINED3DTEXSTA_MIPFILTER] = samplerStates[WINED3DSAMP_MIPFILTER];
 406         states[WINED3DTEXSTA_MINFILTER] = samplerStates[WINED3DSAMP_MINFILTER];
 407         states[WINED3DTEXSTA_MAXMIPLEVEL] = samplerStates[WINED3DSAMP_MAXMIPLEVEL];
 408
 409         if (states[WINED3DTEXSTA_MINFILTER] > WINED3DTEXF_ANISOTROPIC
 410                 || states[WINED3DTEXSTA_MIPFILTER] > WINED3DTEXF_ANISOTROPIC)
 411         {
 412
 413             FIXME("Unrecognized or unsupported D3DSAMP_MINFILTER value %d D3DSAMP_MIPFILTER value %d\n",
 414                   states[WINED3DTEXSTA_MINFILTER],
 415                   states[WINED3DTEXSTA_MIPFILTER]);
 416         }
 417         glValue = wined3d_gl_min_mip_filter(This->baseTexture.minMipLookup,
 418                 min(max(samplerStates[WINED3DSAMP_MINFILTER], WINED3DTEXF_POINT), WINED3DTEXF_LINEAR),
 419                 min(max(samplerStates[WINED3DSAMP_MIPFILTER], WINED3DTEXF_NONE), WINED3DTEXF_LINEAR));
 420
 421         TRACE("ValueMIN=%d, ValueMIP=%d, setting MINFILTER to %x\n",
 422               samplerStates[WINED3DSAMP_MINFILTER],
 423               samplerStates[WINED3DSAMP_MIPFILTER], glValue);
 424         glTexParameteri(textureDimensions, GL_TEXTURE_MIN_FILTER, glValue);
 425         checkGLcall("glTexParameter GL_TEXTURE_MIN_FILTER, ...");
 426
 427         if(!cond_np2) {
 428             if(states[WINED3DTEXSTA_MIPFILTER] == WINED3DTEXF_NONE) {
 429                 glValue = 0;
 430             } else if(states[WINED3DTEXSTA_MAXMIPLEVEL] >= This->baseTexture.levels) {
 431                 glValue = This->baseTexture.levels - 1;
 432             } else {
 433                 glValue = states[WINED3DTEXSTA_MAXMIPLEVEL];
 434             }
 435             glTexParameteri(textureDimensions, GL_TEXTURE_BASE_LEVEL, glValue);
 436         }
 437     }
 438
 439     if ((states[WINED3DSAMP_MAGFILTER] != WINED3DTEXF_ANISOTROPIC
 440             && states[WINED3DSAMP_MINFILTER] != WINED3DTEXF_ANISOTROPIC
 441             && states[WINED3DSAMP_MIPFILTER] != WINED3DTEXF_ANISOTROPIC)
 442             || cond_np2)
 443     {
 444         aniso = 1;
 445     }
 446     else
 447     {
 448         aniso = samplerStates[WINED3DSAMP_MAXANISOTROPY];
 449     }
 450
 451     if (states[WINED3DTEXSTA_MAXANISOTROPY] != aniso)
 452     {
 453         if (GL_SUPPORT(EXT_TEXTURE_FILTER_ANISOTROPIC))
 454         {
 455             glTexParameteri(textureDimensions, GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);
 456             checkGLcall("glTexParameteri(GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso)");
 457         }
 458         else
 459         {
 460             WARN("Anisotropic filtering not supported.\n");
 461         }
 462         states[WINED3DTEXSTA_MAXANISOTROPY] = aniso;
 463     }
 464 }