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, const struct wined3d_texture_ops *texture_ops,
  31         UINT layer_count, UINT level_count, WINED3DRESOURCETYPE resource_type, IWineD3DDeviceImpl *device,
  32         DWORD usage, const struct wined3d_format *format, WINED3DPOOL pool, void *parent,
  33         const struct wined3d_parent_ops *parent_ops, const struct wined3d_resource_ops *resource_ops)
  34 {
  35     HRESULT hr;
  36
  37     hr = resource_init(&texture->resource, resource_type, device,
  38             0, usage, format, pool, parent, parent_ops, resource_ops);
  39     if (FAILED(hr))
  40     {
  41         WARN("Failed to initialize resource, returning %#x\n", hr);
  42         return hr;
  43     }
  44
  45     texture->baseTexture.texture_ops = texture_ops;
  46     texture->baseTexture.sub_resources = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
  47             level_count * layer_count * sizeof(*texture->baseTexture.sub_resources));
  48     if (!texture->baseTexture.sub_resources)
  49     {
  50         ERR("Failed to allocate sub-resource array.\n");
  51         resource_cleanup(&texture->resource);
  52         return E_OUTOFMEMORY;
  53     }
  54
  55     texture->baseTexture.layer_count = layer_count;
  56     texture->baseTexture.level_count = level_count;
  57     texture->baseTexture.filterType = (usage & WINED3DUSAGE_AUTOGENMIPMAP) ? WINED3DTEXF_LINEAR : WINED3DTEXF_NONE;
  58     texture->baseTexture.LOD = 0;
  59     texture->baseTexture.texture_rgb.dirty = TRUE;
  60     texture->baseTexture.texture_srgb.dirty = TRUE;
  61     texture->baseTexture.is_srgb = FALSE;
  62     texture->baseTexture.pow2Matrix_identity = TRUE;
  63
  64     if (texture->resource.format->flags & WINED3DFMT_FLAG_FILTERING)
  65     {
  66         texture->baseTexture.minMipLookup = minMipLookup;
  67         texture->baseTexture.magLookup = magLookup;
  68     }
  69     else
  70     {
  71         texture->baseTexture.minMipLookup = minMipLookup_noFilter;
  72         texture->baseTexture.magLookup = magLookup_noFilter;
  73     }
  74
  75     return WINED3D_OK;
  76 }
  77
  78 void basetexture_cleanup(IWineD3DBaseTextureImpl *texture)
  79 {
  80     basetexture_unload(texture);
  81     HeapFree(GetProcessHeap(), 0, texture->baseTexture.sub_resources);
  82     resource_cleanup(&texture->resource);
  83 }
  84
  85 struct wined3d_resource *basetexture_get_sub_resource(IWineD3DBaseTextureImpl *texture, UINT sub_resource_idx)
  86 {
  87     UINT sub_count = texture->baseTexture.level_count * texture->baseTexture.layer_count;
  88
  89     if (sub_resource_idx >= sub_count)
  90     {
  91         WARN("sub_resource_idx %u >= sub_count %u.\n", sub_resource_idx, sub_count);
  92         return NULL;
  93     }
  94
  95     return texture->baseTexture.sub_resources[sub_resource_idx];
  96 }
  97
  98 /* A GL context is provided by the caller */
  99 static void gltexture_delete(struct gl_texture *tex)
 100 {
 101     ENTER_GL();
 102     glDeleteTextures(1, &tex->name);
 103     LEAVE_GL();
 104     tex->name = 0;
 105 }
 106
 107 void basetexture_unload(IWineD3DBaseTextureImpl *texture)
 108 {
 109     IWineD3DDeviceImpl *device = texture->resource.device;
 110     struct wined3d_context *context = NULL;
 111
 112     if (texture->baseTexture.texture_rgb.name || texture->baseTexture.texture_srgb.name)
 113     {
 114         context = context_acquire(device, NULL);
 115     }
 116
 117     if (texture->baseTexture.texture_rgb.name)
 118         gltexture_delete(&texture->baseTexture.texture_rgb);
 119
 120     if (texture->baseTexture.texture_srgb.name)
 121         gltexture_delete(&texture->baseTexture.texture_srgb);
 122
 123     if (context) context_release(context);
 124
 125     basetexture_set_dirty(texture, TRUE);
 126
 127     resource_unload(&texture->resource);
 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 void basetexture_set_dirty(IWineD3DBaseTextureImpl *texture, BOOL dirty)
 235 {
 236     texture->baseTexture.texture_rgb.dirty = dirty;
 237     texture->baseTexture.texture_srgb.dirty = dirty;
 238 }
 239
 240 /* Context activation is done by the caller. */
 241 HRESULT basetexture_bind(IWineD3DBaseTextureImpl *texture, BOOL srgb, BOOL *set_surface_desc)
 242 {
 243     HRESULT hr = WINED3D_OK;
 244     GLenum textureDimensions;
 245     BOOL isNewTexture = FALSE;
 246     struct gl_texture *gl_tex;
 247
 248     TRACE("texture %p, srgb %#x, set_surface_desc %p.\n", texture, srgb, set_surface_desc);
 249
 250     texture->baseTexture.is_srgb = srgb; /* SRGB mode cache for PreLoad calls outside drawprim */
 251     gl_tex = basetexture_get_gl_texture(texture, srgb);
 252
 253     textureDimensions = texture->baseTexture.target;
 254
 255     ENTER_GL();
 256     /* Generate a texture name if we don't already have one */
 257     if (!gl_tex->name)
 258     {
 259         *set_surface_desc = TRUE;
 260         glGenTextures(1, &gl_tex->name);
 261         checkGLcall("glGenTextures");
 262         TRACE("Generated texture %d\n", gl_tex->name);
 263         if (texture->resource.pool == WINED3DPOOL_DEFAULT)
 264         {
 265             /* Tell opengl to try and keep this texture in video ram (well mostly) */
 266             GLclampf tmp;
 267             tmp = 0.9f;
 268             glPrioritizeTextures(1, &gl_tex->name, &tmp);
 269
 270         }
 271         /* Initialise the state of the texture object
 272         to the openGL defaults, not the directx defaults */
 273         gl_tex->states[WINED3DTEXSTA_ADDRESSU]      = WINED3DTADDRESS_WRAP;
 274         gl_tex->states[WINED3DTEXSTA_ADDRESSV]      = WINED3DTADDRESS_WRAP;
 275         gl_tex->states[WINED3DTEXSTA_ADDRESSW]      = WINED3DTADDRESS_WRAP;
 276         gl_tex->states[WINED3DTEXSTA_BORDERCOLOR]   = 0;
 277         gl_tex->states[WINED3DTEXSTA_MAGFILTER]     = WINED3DTEXF_LINEAR;
 278         gl_tex->states[WINED3DTEXSTA_MINFILTER]     = WINED3DTEXF_POINT; /* GL_NEAREST_MIPMAP_LINEAR */
 279         gl_tex->states[WINED3DTEXSTA_MIPFILTER]     = WINED3DTEXF_LINEAR; /* GL_NEAREST_MIPMAP_LINEAR */
 280         gl_tex->states[WINED3DTEXSTA_MAXMIPLEVEL]   = 0;
 281         gl_tex->states[WINED3DTEXSTA_MAXANISOTROPY] = 1;
 282         gl_tex->states[WINED3DTEXSTA_SRGBTEXTURE]   = 0;
 283         gl_tex->states[WINED3DTEXSTA_SHADOW]        = FALSE;
 284         basetexture_set_dirty(texture, TRUE);
 285         isNewTexture = TRUE;
 286
 287         if (texture->resource.usage & WINED3DUSAGE_AUTOGENMIPMAP)
 288         {
 289             /* This means double binding the texture at creation, but keeps the code simpler all
 290              * in all, and the run-time path free from additional checks
 291              */
 292             glBindTexture(textureDimensions, gl_tex->name);
 293             checkGLcall("glBindTexture");
 294             glTexParameteri(textureDimensions, GL_GENERATE_MIPMAP_SGIS, GL_TRUE);
 295             checkGLcall("glTexParameteri(textureDimensions, GL_GENERATE_MIPMAP_SGIS, GL_TRUE)");
 296         }
 297     } else {
 298         *set_surface_desc = FALSE;
 299     }
 300
 301     /* Bind the texture */
 302     if (gl_tex->name)
 303     {
 304         glBindTexture(textureDimensions, gl_tex->name);
 305         checkGLcall("glBindTexture");
 306         if (isNewTexture) {
 307             /* For a new texture we have to set the textures levels after binding the texture.
 308              * In theory this is all we should ever have to do, but because ATI's drivers are broken, we
 309              * also need to set the texture dimensions before the texture is set
 310              * Beware that texture rectangles do not support mipmapping, but set the maxmiplevel if we're
 311              * relying on the partial GL_ARB_texture_non_power_of_two emulation with texture rectangles
 312              * (ie, do not care for cond_np2 here, just look for GL_TEXTURE_RECTANGLE_ARB)
 313              */
 314             if (textureDimensions != GL_TEXTURE_RECTANGLE_ARB)
 315             {
 316                 TRACE("Setting GL_TEXTURE_MAX_LEVEL to %u.\n", texture->baseTexture.level_count - 1);
 317                 glTexParameteri(textureDimensions, GL_TEXTURE_MAX_LEVEL, texture->baseTexture.level_count - 1);
 318                 checkGLcall("glTexParameteri(textureDimensions, GL_TEXTURE_MAX_LEVEL, texture->baseTexture.level_count)");
 319             }
 320             if(textureDimensions==GL_TEXTURE_CUBE_MAP_ARB) {
 321                 /* Cubemaps are always set to clamp, regardless of the sampler state. */
 322                 glTexParameteri(textureDimensions, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 323                 glTexParameteri(textureDimensions, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 324                 glTexParameteri(textureDimensions, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
 325             }
 326         }
 327     } else { /* this only happened if we've run out of openGL textures */
 328         WARN("This texture doesn't have an openGL texture assigned to it\n");
 329         hr =  WINED3DERR_INVALIDCALL;
 330     }
 331
 332     LEAVE_GL();
 333     return hr;
 334 }
 335
 336 /* GL locking is done by the caller */
 337 static void apply_wrap(const struct wined3d_gl_info *gl_info, GLenum target,
 338         WINED3DTEXTUREADDRESS d3d_wrap, GLenum param, BOOL cond_np2)
 339 {
 340     GLint gl_wrap;
 341
 342     if (d3d_wrap < WINED3DTADDRESS_WRAP || d3d_wrap > WINED3DTADDRESS_MIRRORONCE)
 343     {
 344         FIXME("Unrecognized or unsupported WINED3DTEXTUREADDRESS %#x.\n", d3d_wrap);
 345         return;
 346     }
 347
 348     if (target == GL_TEXTURE_CUBE_MAP_ARB
 349             || (cond_np2 && d3d_wrap == WINED3DTADDRESS_WRAP))
 350     {
 351         /* Cubemaps are always set to clamp, regardless of the sampler state. */
 352         gl_wrap = GL_CLAMP_TO_EDGE;
 353     }
 354     else
 355     {
 356         gl_wrap = gl_info->wrap_lookup[d3d_wrap - WINED3DTADDRESS_WRAP];
 357     }
 358
 359     TRACE("Setting param %#x to %#x for target %#x.\n", param, gl_wrap, target);
 360     glTexParameteri(target, param, gl_wrap);
 361     checkGLcall("glTexParameteri(target, param, gl_wrap)");
 362 }
 363
 364 /* GL locking is done by the caller (state handler) */
 365 void basetexture_apply_state_changes(IWineD3DBaseTextureImpl *texture,
 366         const DWORD samplerStates[WINED3D_HIGHEST_SAMPLER_STATE + 1],
 367         const struct wined3d_gl_info *gl_info)
 368 {
 369     BOOL cond_np2 = IWineD3DBaseTexture_IsCondNP2((IWineD3DBaseTexture *)texture);
 370     GLenum textureDimensions = texture->baseTexture.target;
 371     DWORD state;
 372     DWORD aniso;
 373     struct gl_texture *gl_tex;
 374
 375     TRACE("texture %p, samplerStates %p\n", texture, samplerStates);
 376
 377     gl_tex = basetexture_get_gl_texture(texture, texture->baseTexture.is_srgb);
 378
 379     /* This function relies on the correct texture being bound and loaded. */
 380
 381     if(samplerStates[WINED3DSAMP_ADDRESSU]      != gl_tex->states[WINED3DTEXSTA_ADDRESSU]) {
 382         state = samplerStates[WINED3DSAMP_ADDRESSU];
 383         apply_wrap(gl_info, textureDimensions, state, GL_TEXTURE_WRAP_S, cond_np2);
 384         gl_tex->states[WINED3DTEXSTA_ADDRESSU] = state;
 385     }
 386
 387     if(samplerStates[WINED3DSAMP_ADDRESSV]      != gl_tex->states[WINED3DTEXSTA_ADDRESSV]) {
 388         state = samplerStates[WINED3DSAMP_ADDRESSV];
 389         apply_wrap(gl_info, textureDimensions, state, GL_TEXTURE_WRAP_T, cond_np2);
 390         gl_tex->states[WINED3DTEXSTA_ADDRESSV] = state;
 391     }
 392
 393     if(samplerStates[WINED3DSAMP_ADDRESSW]      != gl_tex->states[WINED3DTEXSTA_ADDRESSW]) {
 394         state = samplerStates[WINED3DSAMP_ADDRESSW];
 395         apply_wrap(gl_info, textureDimensions, state, GL_TEXTURE_WRAP_R, cond_np2);
 396         gl_tex->states[WINED3DTEXSTA_ADDRESSW] = state;
 397     }
 398
 399     if(samplerStates[WINED3DSAMP_BORDERCOLOR]   != gl_tex->states[WINED3DTEXSTA_BORDERCOLOR]) {
 400         float col[4];
 401
 402         state = samplerStates[WINED3DSAMP_BORDERCOLOR];
 403         D3DCOLORTOGLFLOAT4(state, col);
 404         TRACE("Setting border color for %u to %x\n", textureDimensions, state);
 405         glTexParameterfv(textureDimensions, GL_TEXTURE_BORDER_COLOR, &col[0]);
 406         checkGLcall("glTexParameterfv(..., GL_TEXTURE_BORDER_COLOR, ...)");
 407         gl_tex->states[WINED3DTEXSTA_BORDERCOLOR] = state;
 408     }
 409
 410     if(samplerStates[WINED3DSAMP_MAGFILTER]     != gl_tex->states[WINED3DTEXSTA_MAGFILTER]) {
 411         GLint glValue;
 412         state = samplerStates[WINED3DSAMP_MAGFILTER];
 413         if (state > WINED3DTEXF_ANISOTROPIC) {
 414             FIXME("Unrecognized or unsupported MAGFILTER* value %d\n", state);
 415         }
 416
 417         glValue = wined3d_gl_mag_filter(texture->baseTexture.magLookup,
 418                 min(max(state, WINED3DTEXF_POINT), WINED3DTEXF_LINEAR));
 419         TRACE("ValueMAG=%d setting MAGFILTER to %x\n", state, glValue);
 420         glTexParameteri(textureDimensions, GL_TEXTURE_MAG_FILTER, glValue);
 421
 422         gl_tex->states[WINED3DTEXSTA_MAGFILTER] = state;
 423     }
 424
 425     if((samplerStates[WINED3DSAMP_MINFILTER]     != gl_tex->states[WINED3DTEXSTA_MINFILTER] ||
 426         samplerStates[WINED3DSAMP_MIPFILTER]     != gl_tex->states[WINED3DTEXSTA_MIPFILTER] ||
 427         samplerStates[WINED3DSAMP_MAXMIPLEVEL]   != gl_tex->states[WINED3DTEXSTA_MAXMIPLEVEL])) {
 428         GLint glValue;
 429
 430         gl_tex->states[WINED3DTEXSTA_MIPFILTER] = samplerStates[WINED3DSAMP_MIPFILTER];
 431         gl_tex->states[WINED3DTEXSTA_MINFILTER] = samplerStates[WINED3DSAMP_MINFILTER];
 432         gl_tex->states[WINED3DTEXSTA_MAXMIPLEVEL] = samplerStates[WINED3DSAMP_MAXMIPLEVEL];
 433
 434         if (gl_tex->states[WINED3DTEXSTA_MINFILTER] > WINED3DTEXF_ANISOTROPIC
 435             || gl_tex->states[WINED3DTEXSTA_MIPFILTER] > WINED3DTEXF_ANISOTROPIC)
 436         {
 437
 438             FIXME("Unrecognized or unsupported D3DSAMP_MINFILTER value %d D3DSAMP_MIPFILTER value %d\n",
 439                   gl_tex->states[WINED3DTEXSTA_MINFILTER],
 440                   gl_tex->states[WINED3DTEXSTA_MIPFILTER]);
 441         }
 442         glValue = wined3d_gl_min_mip_filter(texture->baseTexture.minMipLookup,
 443                 min(max(samplerStates[WINED3DSAMP_MINFILTER], WINED3DTEXF_POINT), WINED3DTEXF_LINEAR),
 444                 min(max(samplerStates[WINED3DSAMP_MIPFILTER], WINED3DTEXF_NONE), WINED3DTEXF_LINEAR));
 445
 446         TRACE("ValueMIN=%d, ValueMIP=%d, setting MINFILTER to %x\n",
 447               samplerStates[WINED3DSAMP_MINFILTER],
 448               samplerStates[WINED3DSAMP_MIPFILTER], glValue);
 449         glTexParameteri(textureDimensions, GL_TEXTURE_MIN_FILTER, glValue);
 450         checkGLcall("glTexParameter GL_TEXTURE_MIN_FILTER, ...");
 451
 452         if (!cond_np2)
 453         {
 454             if (gl_tex->states[WINED3DTEXSTA_MIPFILTER] == WINED3DTEXF_NONE)
 455                 glValue = texture->baseTexture.LOD;
 456             else if (gl_tex->states[WINED3DTEXSTA_MAXMIPLEVEL] >= texture->baseTexture.level_count)
 457                 glValue = texture->baseTexture.level_count - 1;
 458             else if (gl_tex->states[WINED3DTEXSTA_MAXMIPLEVEL] < texture->baseTexture.LOD)
 459                 /* baseTexture.LOD is already clamped in the setter */
 460                 glValue = texture->baseTexture.LOD;
 461             else
 462                 glValue = gl_tex->states[WINED3DTEXSTA_MAXMIPLEVEL];
 463
 464             /* Note that D3DSAMP_MAXMIPLEVEL specifies the biggest mipmap(default 0), while
 465              * GL_TEXTURE_MAX_LEVEL specifies the smallest mimap used(default 1000).
 466              * So D3DSAMP_MAXMIPLEVEL is the same as GL_TEXTURE_BASE_LEVEL.
 467              */
 468             glTexParameteri(textureDimensions, GL_TEXTURE_BASE_LEVEL, glValue);
 469         }
 470     }
 471
 472     if ((gl_tex->states[WINED3DTEXSTA_MAGFILTER] != WINED3DTEXF_ANISOTROPIC
 473          && gl_tex->states[WINED3DTEXSTA_MINFILTER] != WINED3DTEXF_ANISOTROPIC
 474          && gl_tex->states[WINED3DTEXSTA_MIPFILTER] != WINED3DTEXF_ANISOTROPIC)
 475             || cond_np2)
 476     {
 477         aniso = 1;
 478     }
 479     else
 480     {
 481         aniso = samplerStates[WINED3DSAMP_MAXANISOTROPY];
 482     }
 483
 484     if (gl_tex->states[WINED3DTEXSTA_MAXANISOTROPY] != aniso)
 485     {
 486         if (gl_info->supported[EXT_TEXTURE_FILTER_ANISOTROPIC])
 487         {
 488             glTexParameteri(textureDimensions, GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);
 489             checkGLcall("glTexParameteri(GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso)");
 490         }
 491         else
 492         {
 493             WARN("Anisotropic filtering not supported.\n");
 494         }
 495         gl_tex->states[WINED3DTEXSTA_MAXANISOTROPY] = aniso;
 496     }
 497
 498     if (!(texture->resource.format->flags & WINED3DFMT_FLAG_SHADOW)
 499             != !gl_tex->states[WINED3DTEXSTA_SHADOW])
 500     {
 501         if (texture->resource.format->flags & WINED3DFMT_FLAG_SHADOW)
 502         {
 503             glTexParameteri(textureDimensions, GL_DEPTH_TEXTURE_MODE_ARB, GL_LUMINANCE);
 504             glTexParameteri(textureDimensions, GL_TEXTURE_COMPARE_MODE_ARB, GL_COMPARE_R_TO_TEXTURE_ARB);
 505             checkGLcall("glTexParameteri(textureDimensions, GL_TEXTURE_COMPARE_MODE_ARB, GL_COMPARE_R_TO_TEXTURE_ARB)");
 506             gl_tex->states[WINED3DTEXSTA_SHADOW] = TRUE;
 507         }
 508         else
 509         {
 510             glTexParameteri(textureDimensions, GL_TEXTURE_COMPARE_MODE_ARB, GL_NONE);
 511             checkGLcall("glTexParameteri(textureDimensions, GL_TEXTURE_COMPARE_MODE_ARB, GL_NONE)");
 512             gl_tex->states[WINED3DTEXSTA_SHADOW] = FALSE;
 513         }
 514     }
 515 }