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  * Copyright 2009-2010 Henri Verbeet for CodeWeavers
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  23  */
  24
  25 #include "config.h"
  26 #include "wined3d_private.h"
  27
  28 WINE_DEFAULT_DEBUG_CHANNEL(d3d_texture);
  29
  30 HRESULT basetexture_init(IWineD3DBaseTextureImpl *texture, UINT layer_count, UINT level_count,
  31         WINED3DRESOURCETYPE resource_type, IWineD3DDeviceImpl *device, DWORD usage,
  32         const struct wined3d_format *format, WINED3DPOOL pool, void *parent,
  33         const struct wined3d_parent_ops *parent_ops)
  34 {
  35     HRESULT hr;
  36
  37     hr = resource_init((IWineD3DResource *)texture, resource_type, device,
  38             0, usage, format, pool, parent, parent_ops);
  39     if (FAILED(hr))
  40     {
  41         WARN("Failed to initialize resource, returning %#x\n", hr);
  42         return hr;
  43     }
  44
  45     texture->baseTexture.sub_resources = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
  46             level_count * layer_count * sizeof(*texture->baseTexture.sub_resources));
  47     if (!texture->baseTexture.sub_resources)
  48     {
  49         ERR("Failed to allocate sub-resource array.\n");
  50         resource_cleanup((IWineD3DResource *)texture);
  51         return E_OUTOFMEMORY;
  52     }
  53
  54     texture->baseTexture.layer_count = layer_count;
  55     texture->baseTexture.level_count = level_count;
  56     texture->baseTexture.filterType = (usage & WINED3DUSAGE_AUTOGENMIPMAP) ? WINED3DTEXF_LINEAR : WINED3DTEXF_NONE;
  57     texture->baseTexture.LOD = 0;
  58     texture->baseTexture.texture_rgb.dirty = TRUE;
  59     texture->baseTexture.texture_srgb.dirty = TRUE;
  60     texture->baseTexture.is_srgb = FALSE;
  61     texture->baseTexture.pow2Matrix_identity = TRUE;
  62
  63     if (texture->resource.format->flags & WINED3DFMT_FLAG_FILTERING)
  64     {
  65         texture->baseTexture.minMipLookup = minMipLookup;
  66         texture->baseTexture.magLookup = magLookup;
  67     }
  68     else
  69     {
  70         texture->baseTexture.minMipLookup = minMipLookup_noFilter;
  71         texture->baseTexture.magLookup = magLookup_noFilter;
  72     }
  73
  74     return WINED3D_OK;
  75 }
  76
  77 void basetexture_cleanup(IWineD3DBaseTextureImpl *texture)
  78 {
  79     basetexture_unload(texture);
  80     HeapFree(GetProcessHeap(), 0, texture->baseTexture.sub_resources);
  81     resource_cleanup((IWineD3DResource *)texture);
  82 }
  83
  84 IWineD3DResourceImpl *basetexture_get_sub_resource(IWineD3DBaseTextureImpl *texture, UINT sub_resource_idx)
  85 {
  86     UINT sub_count = texture->baseTexture.level_count * texture->baseTexture.layer_count;
  87
  88     if (sub_resource_idx >= sub_count)
  89     {
  90         WARN("sub_resource_idx %u >= sub_count %u.\n", sub_resource_idx, sub_count);
  91         return NULL;
  92     }
  93
  94     return texture->baseTexture.sub_resources[sub_resource_idx];
  95 }
  96
  97 /* A GL context is provided by the caller */
  98 static void gltexture_delete(struct gl_texture *tex)
  99 {
 100     ENTER_GL();
 101     glDeleteTextures(1, &tex->name);
 102     LEAVE_GL();
 103     tex->name = 0;
 104 }
 105
 106 void basetexture_unload(IWineD3DBaseTextureImpl *texture)
 107 {
 108     IWineD3DDeviceImpl *device = texture->resource.device;
 109     struct wined3d_context *context = NULL;
 110
 111     if (texture->baseTexture.texture_rgb.name || texture->baseTexture.texture_srgb.name)
 112     {
 113         context = context_acquire(device, NULL);
 114     }
 115
 116     if (texture->baseTexture.texture_rgb.name)
 117         gltexture_delete(&texture->baseTexture.texture_rgb);
 118
 119     if (texture->baseTexture.texture_srgb.name)
 120         gltexture_delete(&texture->baseTexture.texture_srgb);
 121
 122     if (context) context_release(context);
 123
 124     texture->baseTexture.texture_rgb.dirty = TRUE;
 125     texture->baseTexture.texture_srgb.dirty = TRUE;
 126
 127     resource_unload((IWineD3DResourceImpl *)texture);
 128 }
 129
 130 DWORD basetexture_set_lod(IWineD3DBaseTextureImpl *texture, DWORD lod)
 131 {
 132     DWORD old = texture->baseTexture.LOD;
 133
 134     TRACE("texture %p, lod %u.\n", texture, lod);
 135
 136     /* The d3d9:texture test shows that SetLOD is ignored on non-managed
 137      * textures. The call always returns 0, and GetLOD always returns 0. */
 138     if (texture->resource.pool != WINED3DPOOL_MANAGED)
 139     {
 140         TRACE("Ignoring SetLOD on %s texture, returning 0.\n", debug_d3dpool(texture->resource.pool));
 141         return 0;
 142     }
 143
 144     if (lod >= texture->baseTexture.level_count)
 145         lod = texture->baseTexture.level_count - 1;
 146
 147     if (texture->baseTexture.LOD != lod)
 148     {
 149         texture->baseTexture.LOD = lod;
 150
 151         texture->baseTexture.texture_rgb.states[WINED3DTEXSTA_MAXMIPLEVEL] = ~0U;
 152         texture->baseTexture.texture_srgb.states[WINED3DTEXSTA_MAXMIPLEVEL] = ~0U;
 153         if (texture->baseTexture.bindCount)
 154             IWineD3DDeviceImpl_MarkStateDirty(texture->resource.device, STATE_SAMPLER(texture->baseTexture.sampler));
 155     }
 156
 157     return old;
 158 }
 159
 160 DWORD basetexture_get_lod(IWineD3DBaseTextureImpl *texture)
 161 {
 162     TRACE("texture %p, returning %u.\n", texture, texture->baseTexture.LOD);
 163
 164     return texture->baseTexture.LOD;
 165 }
 166
 167 DWORD basetexture_get_level_count(IWineD3DBaseTextureImpl *texture)
 168 {
 169     TRACE("texture %p, returning %u.\n", texture, texture->baseTexture.level_count);
 170     return texture->baseTexture.level_count;
 171 }
 172
 173 HRESULT basetexture_set_autogen_filter_type(IWineD3DBaseTextureImpl *texture, WINED3DTEXTUREFILTERTYPE filter_type)
 174 {
 175     TRACE("texture %p, filter_type %s.\n", texture, debug_d3dtexturefiltertype(filter_type));
 176
 177     if (!(texture->resource.usage & WINED3DUSAGE_AUTOGENMIPMAP))
 178     {
 179         WARN("Texture doesn't have AUTOGENMIPMAP usage.\n");
 180         return WINED3DERR_INVALIDCALL;
 181     }
 182
 183     if (texture->baseTexture.filterType != filter_type)
 184     {
 185         GLenum target = texture->baseTexture.target;
 186         struct wined3d_context *context;
 187
 188         context = context_acquire(texture->resource.device, NULL);
 189
 190         ENTER_GL();
 191         glBindTexture(target, texture->baseTexture.texture_rgb.name);
 192         checkGLcall("glBindTexture");
 193         switch (filter_type)
 194         {
 195             case WINED3DTEXF_NONE:
 196             case WINED3DTEXF_POINT:
 197                 glTexParameteri(target, GL_GENERATE_MIPMAP_HINT_SGIS, GL_FASTEST);
 198                 checkGLcall("glTexParameteri(target, GL_GENERATE_MIPMAP_HINT_SGIS, GL_FASTEST)");
 199                 break;
 200
 201             case WINED3DTEXF_LINEAR:
 202                 glTexParameteri(target, GL_GENERATE_MIPMAP_HINT_SGIS, GL_NICEST);
 203                 checkGLcall("glTexParameteri(target, GL_GENERATE_MIPMAP_HINT_SGIS, GL_NICEST)");
 204                 break;
 205
 206             default:
 207                 WARN("Unexpected filter type %#x, setting to GL_NICEST.\n", filter_type);
 208                 glTexParameteri(target, GL_GENERATE_MIPMAP_HINT_SGIS, GL_NICEST);
 209                 checkGLcall("glTexParameteri(target, GL_GENERATE_MIPMAP_HINT_SGIS, GL_NICEST)");
 210                 break;
 211         }
 212         LEAVE_GL();
 213
 214         context_release(context);
 215     }
 216     texture->baseTexture.filterType = filter_type;
 217
 218     return WINED3D_OK;
 219 }
 220
 221 WINED3DTEXTUREFILTERTYPE basetexture_get_autogen_filter_type(IWineD3DBaseTextureImpl *texture)
 222 {
 223     TRACE("texture %p.\n", texture);
 224
 225     return texture->baseTexture.filterType;
 226 }
 227
 228 void basetexture_generate_mipmaps(IWineD3DBaseTextureImpl *texture)
 229 {
 230     /* TODO: Implement filters using GL_SGI_generate_mipmaps. */
 231     FIXME("texture %p stub!\n", texture);
 232 }
 233
 234 BOOL basetexture_set_dirty(IWineD3DBaseTextureImpl *texture, BOOL dirty)
 235 {
 236     BOOL old;
 237
 238     old = texture->baseTexture.texture_rgb.dirty || texture->baseTexture.texture_srgb.dirty;
 239     texture->baseTexture.texture_rgb.dirty = dirty;
 240     texture->baseTexture.texture_srgb.dirty = dirty;
 241
 242     return old;
 243 }
 244
 245 /* Context activation is done by the caller. */
 246 HRESULT basetexture_bind(IWineD3DBaseTextureImpl *texture, BOOL srgb, BOOL *set_surface_desc)
 247 {
 248     HRESULT hr = WINED3D_OK;
 249     GLenum textureDimensions;
 250     BOOL isNewTexture = FALSE;
 251     struct gl_texture *gl_tex;
 252
 253     TRACE("texture %p, srgb %#x, set_surface_desc %p.\n", texture, srgb, set_surface_desc);
 254
 255     texture->baseTexture.is_srgb = srgb; /* SRGB mode cache for PreLoad calls outside drawprim */
 256     if (srgb)
 257         gl_tex = &texture->baseTexture.texture_srgb;
 258     else
 259         gl_tex = &texture->baseTexture.texture_rgb;
 260
 261     textureDimensions = texture->baseTexture.target;
 262
 263     ENTER_GL();
 264     /* Generate a texture name if we don't already have one */
 265     if (!gl_tex->name)
 266     {
 267         *set_surface_desc = TRUE;
 268         glGenTextures(1, &gl_tex->name);
 269         checkGLcall("glGenTextures");
 270         TRACE("Generated texture %d\n", gl_tex->name);
 271         if (texture->resource.pool == WINED3DPOOL_DEFAULT)
 272         {
 273             /* Tell opengl to try and keep this texture in video ram (well mostly) */
 274             GLclampf tmp;
 275             tmp = 0.9f;
 276             glPrioritizeTextures(1, &gl_tex->name, &tmp);
 277
 278         }
 279         /* Initialise the state of the texture object
 280         to the openGL defaults, not the directx defaults */
 281         gl_tex->states[WINED3DTEXSTA_ADDRESSU]      = WINED3DTADDRESS_WRAP;
 282         gl_tex->states[WINED3DTEXSTA_ADDRESSV]      = WINED3DTADDRESS_WRAP;
 283         gl_tex->states[WINED3DTEXSTA_ADDRESSW]      = WINED3DTADDRESS_WRAP;
 284         gl_tex->states[WINED3DTEXSTA_BORDERCOLOR]   = 0;
 285         gl_tex->states[WINED3DTEXSTA_MAGFILTER]     = WINED3DTEXF_LINEAR;
 286         gl_tex->states[WINED3DTEXSTA_MINFILTER]     = WINED3DTEXF_POINT; /* GL_NEAREST_MIPMAP_LINEAR */
 287         gl_tex->states[WINED3DTEXSTA_MIPFILTER]     = WINED3DTEXF_LINEAR; /* GL_NEAREST_MIPMAP_LINEAR */
 288         gl_tex->states[WINED3DTEXSTA_MAXMIPLEVEL]   = 0;
 289         gl_tex->states[WINED3DTEXSTA_MAXANISOTROPY] = 1;
 290         gl_tex->states[WINED3DTEXSTA_SRGBTEXTURE]   = 0;
 291         gl_tex->states[WINED3DTEXSTA_SHADOW]        = FALSE;
 292         basetexture_set_dirty(texture, TRUE);
 293         isNewTexture = TRUE;
 294
 295         if (texture->resource.usage & WINED3DUSAGE_AUTOGENMIPMAP)
 296         {
 297             /* This means double binding the texture at creation, but keeps the code simpler all
 298              * in all, and the run-time path free from additional checks
 299              */
 300             glBindTexture(textureDimensions, gl_tex->name);
 301             checkGLcall("glBindTexture");
 302             glTexParameteri(textureDimensions, GL_GENERATE_MIPMAP_SGIS, GL_TRUE);
 303             checkGLcall("glTexParameteri(textureDimensions, GL_GENERATE_MIPMAP_SGIS, GL_TRUE)");
 304         }
 305     } else {
 306         *set_surface_desc = FALSE;
 307     }
 308
 309     /* Bind the texture */
 310     if (gl_tex->name)
 311     {
 312         glBindTexture(textureDimensions, gl_tex->name);
 313         checkGLcall("glBindTexture");
 314         if (isNewTexture) {
 315             /* For a new texture we have to set the textures levels after binding the texture.
 316              * In theory this is all we should ever have to do, but because ATI's drivers are broken, we
 317              * also need to set the texture dimensions before the texture is set
 318              * Beware that texture rectangles do not support mipmapping, but set the maxmiplevel if we're
 319              * relying on the partial GL_ARB_texture_non_power_of_two emulation with texture rectangles
 320              * (ie, do not care for cond_np2 here, just look for GL_TEXTURE_RECTANGLE_ARB)
 321              */
 322             if (textureDimensions != GL_TEXTURE_RECTANGLE_ARB)
 323             {
 324                 TRACE("Setting GL_TEXTURE_MAX_LEVEL to %u.\n", texture->baseTexture.level_count - 1);
 325                 glTexParameteri(textureDimensions, GL_TEXTURE_MAX_LEVEL, texture->baseTexture.level_count - 1);
 326                 checkGLcall("glTexParameteri(textureDimensions, GL_TEXTURE_MAX_LEVEL, texture->baseTexture.level_count)");
 327             }
 328             if(textureDimensions==GL_TEXTURE_CUBE_MAP_ARB) {
 329                 /* Cubemaps are always set to clamp, regardless of the sampler state. */
 330                 glTexParameteri(textureDimensions, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 331                 glTexParameteri(textureDimensions, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 332                 glTexParameteri(textureDimensions, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
 333             }
 334         }
 335     } else { /* this only happened if we've run out of openGL textures */
 336         WARN("This texture doesn't have an openGL texture assigned to it\n");
 337         hr =  WINED3DERR_INVALIDCALL;
 338     }
 339
 340     LEAVE_GL();
 341     return hr;
 342 }
 343
 344 /* GL locking is done by the caller */
 345 static void apply_wrap(const struct wined3d_gl_info *gl_info, GLenum target,
 346         WINED3DTEXTUREADDRESS d3d_wrap, GLenum param, BOOL cond_np2)
 347 {
 348     GLint gl_wrap;
 349
 350     if (d3d_wrap < WINED3DTADDRESS_WRAP || d3d_wrap > WINED3DTADDRESS_MIRRORONCE)
 351     {
 352         FIXME("Unrecognized or unsupported WINED3DTEXTUREADDRESS %#x.\n", d3d_wrap);
 353         return;
 354     }
 355
 356     if (target == GL_TEXTURE_CUBE_MAP_ARB
 357             || (cond_np2 && d3d_wrap == WINED3DTADDRESS_WRAP))
 358     {
 359         /* Cubemaps are always set to clamp, regardless of the sampler state. */
 360         gl_wrap = GL_CLAMP_TO_EDGE;
 361     }
 362     else
 363     {
 364         gl_wrap = gl_info->wrap_lookup[d3d_wrap - WINED3DTADDRESS_WRAP];
 365     }
 366
 367     TRACE("Setting param %#x to %#x for target %#x.\n", param, gl_wrap, target);
 368     glTexParameteri(target, param, gl_wrap);
 369     checkGLcall("glTexParameteri(target, param, gl_wrap)");
 370 }
 371
 372 /* GL locking is done by the caller (state handler) */
 373 void basetexture_apply_state_changes(IWineD3DBaseTextureImpl *texture,
 374         const DWORD samplerStates[WINED3D_HIGHEST_SAMPLER_STATE + 1],
 375         const struct wined3d_gl_info *gl_info)
 376 {
 377     BOOL cond_np2 = IWineD3DBaseTexture_IsCondNP2((IWineD3DBaseTexture *)texture);
 378     GLenum textureDimensions = texture->baseTexture.target;
 379     DWORD state;
 380     DWORD aniso;
 381     struct gl_texture *gl_tex;
 382
 383     TRACE("texture %p, samplerStates %p\n", texture, samplerStates);
 384
 385     if (texture->baseTexture.is_srgb)
 386         gl_tex = &texture->baseTexture.texture_srgb;
 387     else
 388         gl_tex = &texture->baseTexture.texture_rgb;
 389
 390     /* This function relies on the correct texture being bound and loaded. */
 391
 392     if(samplerStates[WINED3DSAMP_ADDRESSU]      != gl_tex->states[WINED3DTEXSTA_ADDRESSU]) {
 393         state = samplerStates[WINED3DSAMP_ADDRESSU];
 394         apply_wrap(gl_info, textureDimensions, state, GL_TEXTURE_WRAP_S, cond_np2);
 395         gl_tex->states[WINED3DTEXSTA_ADDRESSU] = state;
 396     }
 397
 398     if(samplerStates[WINED3DSAMP_ADDRESSV]      != gl_tex->states[WINED3DTEXSTA_ADDRESSV]) {
 399         state = samplerStates[WINED3DSAMP_ADDRESSV];
 400         apply_wrap(gl_info, textureDimensions, state, GL_TEXTURE_WRAP_T, cond_np2);
 401         gl_tex->states[WINED3DTEXSTA_ADDRESSV] = state;
 402     }
 403
 404     if(samplerStates[WINED3DSAMP_ADDRESSW]      != gl_tex->states[WINED3DTEXSTA_ADDRESSW]) {
 405         state = samplerStates[WINED3DSAMP_ADDRESSW];
 406         apply_wrap(gl_info, textureDimensions, state, GL_TEXTURE_WRAP_R, cond_np2);
 407         gl_tex->states[WINED3DTEXSTA_ADDRESSW] = state;
 408     }
 409
 410     if(samplerStates[WINED3DSAMP_BORDERCOLOR]   != gl_tex->states[WINED3DTEXSTA_BORDERCOLOR]) {
 411         float col[4];
 412
 413         state = samplerStates[WINED3DSAMP_BORDERCOLOR];
 414         D3DCOLORTOGLFLOAT4(state, col);
 415         TRACE("Setting border color for %u to %x\n", textureDimensions, state);
 416         glTexParameterfv(textureDimensions, GL_TEXTURE_BORDER_COLOR, &col[0]);
 417         checkGLcall("glTexParameterfv(..., GL_TEXTURE_BORDER_COLOR, ...)");
 418         gl_tex->states[WINED3DTEXSTA_BORDERCOLOR] = state;
 419     }
 420
 421     if(samplerStates[WINED3DSAMP_MAGFILTER]     != gl_tex->states[WINED3DTEXSTA_MAGFILTER]) {
 422         GLint glValue;
 423         state = samplerStates[WINED3DSAMP_MAGFILTER];
 424         if (state > WINED3DTEXF_ANISOTROPIC) {
 425             FIXME("Unrecognized or unsupported MAGFILTER* value %d\n", state);
 426         }
 427
 428         glValue = wined3d_gl_mag_filter(texture->baseTexture.magLookup,
 429                 min(max(state, WINED3DTEXF_POINT), WINED3DTEXF_LINEAR));
 430         TRACE("ValueMAG=%d setting MAGFILTER to %x\n", state, glValue);
 431         glTexParameteri(textureDimensions, GL_TEXTURE_MAG_FILTER, glValue);
 432
 433         gl_tex->states[WINED3DTEXSTA_MAGFILTER] = state;
 434     }
 435
 436     if((samplerStates[WINED3DSAMP_MINFILTER]     != gl_tex->states[WINED3DTEXSTA_MINFILTER] ||
 437         samplerStates[WINED3DSAMP_MIPFILTER]     != gl_tex->states[WINED3DTEXSTA_MIPFILTER] ||
 438         samplerStates[WINED3DSAMP_MAXMIPLEVEL]   != gl_tex->states[WINED3DTEXSTA_MAXMIPLEVEL])) {
 439         GLint glValue;
 440
 441         gl_tex->states[WINED3DTEXSTA_MIPFILTER] = samplerStates[WINED3DSAMP_MIPFILTER];
 442         gl_tex->states[WINED3DTEXSTA_MINFILTER] = samplerStates[WINED3DSAMP_MINFILTER];
 443         gl_tex->states[WINED3DTEXSTA_MAXMIPLEVEL] = samplerStates[WINED3DSAMP_MAXMIPLEVEL];
 444
 445         if (gl_tex->states[WINED3DTEXSTA_MINFILTER] > WINED3DTEXF_ANISOTROPIC
 446             || gl_tex->states[WINED3DTEXSTA_MIPFILTER] > WINED3DTEXF_ANISOTROPIC)
 447         {
 448
 449             FIXME("Unrecognized or unsupported D3DSAMP_MINFILTER value %d D3DSAMP_MIPFILTER value %d\n",
 450                   gl_tex->states[WINED3DTEXSTA_MINFILTER],
 451                   gl_tex->states[WINED3DTEXSTA_MIPFILTER]);
 452         }
 453         glValue = wined3d_gl_min_mip_filter(texture->baseTexture.minMipLookup,
 454                 min(max(samplerStates[WINED3DSAMP_MINFILTER], WINED3DTEXF_POINT), WINED3DTEXF_LINEAR),
 455                 min(max(samplerStates[WINED3DSAMP_MIPFILTER], WINED3DTEXF_NONE), WINED3DTEXF_LINEAR));
 456
 457         TRACE("ValueMIN=%d, ValueMIP=%d, setting MINFILTER to %x\n",
 458               samplerStates[WINED3DSAMP_MINFILTER],
 459               samplerStates[WINED3DSAMP_MIPFILTER], glValue);
 460         glTexParameteri(textureDimensions, GL_TEXTURE_MIN_FILTER, glValue);
 461         checkGLcall("glTexParameter GL_TEXTURE_MIN_FILTER, ...");
 462
 463         if (!cond_np2)
 464         {
 465             if (gl_tex->states[WINED3DTEXSTA_MIPFILTER] == WINED3DTEXF_NONE)
 466                 glValue = texture->baseTexture.LOD;
 467             else if (gl_tex->states[WINED3DTEXSTA_MAXMIPLEVEL] >= texture->baseTexture.level_count)
 468                 glValue = texture->baseTexture.level_count - 1;
 469             else if (gl_tex->states[WINED3DTEXSTA_MAXMIPLEVEL] < texture->baseTexture.LOD)
 470                 /* baseTexture.LOD is already clamped in the setter */
 471                 glValue = texture->baseTexture.LOD;
 472             else
 473                 glValue = gl_tex->states[WINED3DTEXSTA_MAXMIPLEVEL];
 474
 475             /* Note that D3DSAMP_MAXMIPLEVEL specifies the biggest mipmap(default 0), while
 476              * GL_TEXTURE_MAX_LEVEL specifies the smallest mimap used(default 1000).
 477              * So D3DSAMP_MAXMIPLEVEL is the same as GL_TEXTURE_BASE_LEVEL.
 478              */
 479             glTexParameteri(textureDimensions, GL_TEXTURE_BASE_LEVEL, glValue);
 480         }
 481     }
 482
 483     if ((gl_tex->states[WINED3DTEXSTA_MAGFILTER] != WINED3DTEXF_ANISOTROPIC
 484          && gl_tex->states[WINED3DTEXSTA_MINFILTER] != WINED3DTEXF_ANISOTROPIC
 485          && gl_tex->states[WINED3DTEXSTA_MIPFILTER] != WINED3DTEXF_ANISOTROPIC)
 486             || cond_np2)
 487     {
 488         aniso = 1;
 489     }
 490     else
 491     {
 492         aniso = samplerStates[WINED3DSAMP_MAXANISOTROPY];
 493     }
 494
 495     if (gl_tex->states[WINED3DTEXSTA_MAXANISOTROPY] != aniso)
 496     {
 497         if (gl_info->supported[EXT_TEXTURE_FILTER_ANISOTROPIC])
 498         {
 499             glTexParameteri(textureDimensions, GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);
 500             checkGLcall("glTexParameteri(GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso)");
 501         }
 502         else
 503         {
 504             WARN("Anisotropic filtering not supported.\n");
 505         }
 506         gl_tex->states[WINED3DTEXSTA_MAXANISOTROPY] = aniso;
 507     }
 508
 509     if (!(texture->resource.format->flags & WINED3DFMT_FLAG_SHADOW)
 510             != !gl_tex->states[WINED3DTEXSTA_SHADOW])
 511     {
 512         if (texture->resource.format->flags & WINED3DFMT_FLAG_SHADOW)
 513         {
 514             glTexParameteri(textureDimensions, GL_DEPTH_TEXTURE_MODE_ARB, GL_LUMINANCE);
 515             glTexParameteri(textureDimensions, GL_TEXTURE_COMPARE_MODE_ARB, GL_COMPARE_R_TO_TEXTURE_ARB);
 516             checkGLcall("glTexParameteri(textureDimensions, GL_TEXTURE_COMPARE_MODE_ARB, GL_COMPARE_R_TO_TEXTURE_ARB)");
 517             gl_tex->states[WINED3DTEXSTA_SHADOW] = TRUE;
 518         }
 519         else
 520         {
 521             glTexParameteri(textureDimensions, GL_TEXTURE_COMPARE_MODE_ARB, GL_NONE);
 522             checkGLcall("glTexParameteri(textureDimensions, GL_TEXTURE_COMPARE_MODE_ARB, GL_NONE)");
 523             gl_tex->states[WINED3DTEXSTA_SHADOW] = FALSE;
 524         }
 525     }
 526 }