src/mesa/drivers/dri/radeon/radeon_tex.c

   1 /*
   2 Copyright 2000, 2001 ATI Technologies Inc., Ontario, Canada, and
   3                      VA Linux Systems Inc., Fremont, California.
   4
   5 All Rights Reserved.
   6
   7 Permission is hereby granted, free of charge, to any person obtaining
   8 a copy of this software and associated documentation files (the
   9 "Software"), to deal in the Software without restriction, including
  10 without limitation the rights to use, copy, modify, merge, publish,
  11 distribute, sublicense, and/or sell copies of the Software, and to
  12 permit persons to whom the Software is furnished to do so, subject to
  13 the following conditions:
  14
  15 The above copyright notice and this permission notice (including the
  16 next paragraph) shall be included in all copies or substantial
  17 portions of the Software.
  18
  19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  20 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  22 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  23 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  24 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  25 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26 */
  27
  28 /*
  29  * Authors:
  30  *    Gareth Hughes <gareth@valinux.com>
  31  *    Brian Paul <brianp@valinux.com>
  32  */
  33
  34 #include "main/glheader.h"
  35 #include "main/imports.h"
  36 #include "main/colormac.h"
  37 #include "main/context.h"
  38 #include "main/enums.h"
  39 #include "main/image.h"
  40 #include "main/simple_list.h"
  41 #include "main/texformat.h"
  42 #include "main/texstore.h"
  43 #include "main/teximage.h"
  44 #include "main/texobj.h"
  45
  46 #include "radeon_context.h"
  47 #include "radeon_mipmap_tree.h"
  48 #include "radeon_state.h"
  49 #include "radeon_ioctl.h"
  50 #include "radeon_swtcl.h"
  51 #include "radeon_tex.h"
  52
  53 #include "xmlpool.h"
  54
  55
  56
  57 /**
  58  * Set the texture wrap modes.
  59  *
  60  * \param t Texture object whose wrap modes are to be set
  61  * \param swrap Wrap mode for the \a s texture coordinate
  62  * \param twrap Wrap mode for the \a t texture coordinate
  63  */
  64
  65 static void radeonSetTexWrap( radeonTexObjPtr t, GLenum swrap, GLenum twrap )
  66 {
  67    GLboolean  is_clamp = GL_FALSE;
  68    GLboolean  is_clamp_to_border = GL_FALSE;
  69
  70    t->pp_txfilter &= ~(RADEON_CLAMP_S_MASK | RADEON_CLAMP_T_MASK | RADEON_BORDER_MODE_D3D);
  71
  72    switch ( swrap ) {
  73    case GL_REPEAT:
  74       t->pp_txfilter |= RADEON_CLAMP_S_WRAP;
  75       break;
  76    case GL_CLAMP:
  77       t->pp_txfilter |= RADEON_CLAMP_S_CLAMP_GL;
  78       is_clamp = GL_TRUE;
  79       break;
  80    case GL_CLAMP_TO_EDGE:
  81       t->pp_txfilter |= RADEON_CLAMP_S_CLAMP_LAST;
  82       break;
  83    case GL_CLAMP_TO_BORDER:
  84       t->pp_txfilter |= RADEON_CLAMP_S_CLAMP_GL;
  85       is_clamp_to_border = GL_TRUE;
  86       break;
  87    case GL_MIRRORED_REPEAT:
  88       t->pp_txfilter |= RADEON_CLAMP_S_MIRROR;
  89       break;
  90    case GL_MIRROR_CLAMP_EXT:
  91       t->pp_txfilter |= RADEON_CLAMP_S_MIRROR_CLAMP_GL;
  92       is_clamp = GL_TRUE;
  93       break;
  94    case GL_MIRROR_CLAMP_TO_EDGE_EXT:
  95       t->pp_txfilter |= RADEON_CLAMP_S_MIRROR_CLAMP_LAST;
  96       break;
  97    case GL_MIRROR_CLAMP_TO_BORDER_EXT:
  98       t->pp_txfilter |= RADEON_CLAMP_S_MIRROR_CLAMP_GL;
  99       is_clamp_to_border = GL_TRUE;
 100       break;
 101    default:
 102       _mesa_problem(NULL, "bad S wrap mode in %s", __FUNCTION__);
 103    }
 104
 105    switch ( twrap ) {
 106    case GL_REPEAT:
 107       t->pp_txfilter |= RADEON_CLAMP_T_WRAP;
 108       break;
 109    case GL_CLAMP:
 110       t->pp_txfilter |= RADEON_CLAMP_T_CLAMP_GL;
 111       is_clamp = GL_TRUE;
 112       break;
 113    case GL_CLAMP_TO_EDGE:
 114       t->pp_txfilter |= RADEON_CLAMP_T_CLAMP_LAST;
 115       break;
 116    case GL_CLAMP_TO_BORDER:
 117       t->pp_txfilter |= RADEON_CLAMP_T_CLAMP_GL;
 118       is_clamp_to_border = GL_TRUE;
 119       break;
 120    case GL_MIRRORED_REPEAT:
 121       t->pp_txfilter |= RADEON_CLAMP_T_MIRROR;
 122       break;
 123    case GL_MIRROR_CLAMP_EXT:
 124       t->pp_txfilter |= RADEON_CLAMP_T_MIRROR_CLAMP_GL;
 125       is_clamp = GL_TRUE;
 126       break;
 127    case GL_MIRROR_CLAMP_TO_EDGE_EXT:
 128       t->pp_txfilter |= RADEON_CLAMP_T_MIRROR_CLAMP_LAST;
 129       break;
 130    case GL_MIRROR_CLAMP_TO_BORDER_EXT:
 131       t->pp_txfilter |= RADEON_CLAMP_T_MIRROR_CLAMP_GL;
 132       is_clamp_to_border = GL_TRUE;
 133       break;
 134    default:
 135       _mesa_problem(NULL, "bad T wrap mode in %s", __FUNCTION__);
 136    }
 137
 138    if ( is_clamp_to_border ) {
 139       t->pp_txfilter |= RADEON_BORDER_MODE_D3D;
 140    }
 141
 142    t->border_fallback = (is_clamp && is_clamp_to_border);
 143 }
 144
 145 static void radeonSetTexMaxAnisotropy( radeonTexObjPtr t, GLfloat max )
 146 {
 147    t->pp_txfilter &= ~RADEON_MAX_ANISO_MASK;
 148
 149    if ( max == 1.0 ) {
 150       t->pp_txfilter |= RADEON_MAX_ANISO_1_TO_1;
 151    } else if ( max <= 2.0 ) {
 152       t->pp_txfilter |= RADEON_MAX_ANISO_2_TO_1;
 153    } else if ( max <= 4.0 ) {
 154       t->pp_txfilter |= RADEON_MAX_ANISO_4_TO_1;
 155    } else if ( max <= 8.0 ) {
 156       t->pp_txfilter |= RADEON_MAX_ANISO_8_TO_1;
 157    } else {
 158       t->pp_txfilter |= RADEON_MAX_ANISO_16_TO_1;
 159    }
 160 }
 161
 162 /**
 163  * Set the texture magnification and minification modes.
 164  *
 165  * \param t Texture whose filter modes are to be set
 166  * \param minf Texture minification mode
 167  * \param magf Texture magnification mode
 168  */
 169
 170 static void radeonSetTexFilter( radeonTexObjPtr t, GLenum minf, GLenum magf )
 171 {
 172    GLuint anisotropy = (t->pp_txfilter & RADEON_MAX_ANISO_MASK);
 173
 174    /* Force revalidation to account for switches from/to mipmapping. */
 175    t->validated = GL_FALSE;
 176
 177    t->pp_txfilter &= ~(RADEON_MIN_FILTER_MASK | RADEON_MAG_FILTER_MASK);
 178
 179    /* r100 chips can't handle mipmaps/aniso for cubemap/volume textures */
 180    if ( t->base.Target == GL_TEXTURE_CUBE_MAP ) {
 181       switch ( minf ) {
 182       case GL_NEAREST:
 183       case GL_NEAREST_MIPMAP_NEAREST:
 184       case GL_NEAREST_MIPMAP_LINEAR:
 185          t->pp_txfilter |= RADEON_MIN_FILTER_NEAREST;
 186          break;
 187       case GL_LINEAR:
 188       case GL_LINEAR_MIPMAP_NEAREST:
 189       case GL_LINEAR_MIPMAP_LINEAR:
 190          t->pp_txfilter |= RADEON_MIN_FILTER_LINEAR;
 191          break;
 192       default:
 193          break;
 194       }
 195    }
 196    else if ( anisotropy == RADEON_MAX_ANISO_1_TO_1 ) {
 197       switch ( minf ) {
 198       case GL_NEAREST:
 199          t->pp_txfilter |= RADEON_MIN_FILTER_NEAREST;
 200          break;
 201       case GL_LINEAR:
 202          t->pp_txfilter |= RADEON_MIN_FILTER_LINEAR;
 203          break;
 204       case GL_NEAREST_MIPMAP_NEAREST:
 205          t->pp_txfilter |= RADEON_MIN_FILTER_NEAREST_MIP_NEAREST;
 206          break;
 207       case GL_NEAREST_MIPMAP_LINEAR:
 208          t->pp_txfilter |= RADEON_MIN_FILTER_LINEAR_MIP_NEAREST;
 209          break;
 210       case GL_LINEAR_MIPMAP_NEAREST:
 211          t->pp_txfilter |= RADEON_MIN_FILTER_NEAREST_MIP_LINEAR;
 212          break;
 213       case GL_LINEAR_MIPMAP_LINEAR:
 214          t->pp_txfilter |= RADEON_MIN_FILTER_LINEAR_MIP_LINEAR;
 215          break;
 216       }
 217    } else {
 218       switch ( minf ) {
 219       case GL_NEAREST:
 220          t->pp_txfilter |= RADEON_MIN_FILTER_ANISO_NEAREST;
 221          break;
 222       case GL_LINEAR:
 223          t->pp_txfilter |= RADEON_MIN_FILTER_ANISO_LINEAR;
 224          break;
 225       case GL_NEAREST_MIPMAP_NEAREST:
 226       case GL_LINEAR_MIPMAP_NEAREST:
 227          t->pp_txfilter |= RADEON_MIN_FILTER_ANISO_NEAREST_MIP_NEAREST;
 228          break;
 229       case GL_NEAREST_MIPMAP_LINEAR:
 230       case GL_LINEAR_MIPMAP_LINEAR:
 231          t->pp_txfilter |= RADEON_MIN_FILTER_ANISO_NEAREST_MIP_LINEAR;
 232          break;
 233       }
 234    }
 235
 236    switch ( magf ) {
 237    case GL_NEAREST:
 238       t->pp_txfilter |= RADEON_MAG_FILTER_NEAREST;
 239       break;
 240    case GL_LINEAR:
 241       t->pp_txfilter |= RADEON_MAG_FILTER_LINEAR;
 242       break;
 243    }
 244 }
 245
 246 static void radeonSetTexBorderColor( radeonTexObjPtr t, GLubyte c[4] )
 247 {
 248    t->pp_border_color = radeonPackColor( 4, c[0], c[1], c[2], c[3] );
 249 }
 250
 251 #define SCALED_FLOAT_TO_BYTE( x, scale ) \
 252                 (((GLuint)((255.0F / scale) * (x))) / 2)
 253
 254 static void radeonTexEnv( GLcontext *ctx, GLenum target,
 255                           GLenum pname, const GLfloat *param )
 256 {
 257    r100ContextPtr rmesa = R100_CONTEXT(ctx);
 258    GLuint unit = ctx->Texture.CurrentUnit;
 259    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 260
 261    if ( RADEON_DEBUG & DEBUG_STATE ) {
 262       fprintf( stderr, "%s( %s )\n",
 263                __FUNCTION__, _mesa_lookup_enum_by_nr( pname ) );
 264    }
 265
 266    switch ( pname ) {
 267    case GL_TEXTURE_ENV_COLOR: {
 268       GLubyte c[4];
 269       GLuint envColor;
 270       UNCLAMPED_FLOAT_TO_RGBA_CHAN( c, texUnit->EnvColor );
 271       envColor = radeonPackColor( 4, c[0], c[1], c[2], c[3] );
 272       if ( rmesa->hw.tex[unit].cmd[TEX_PP_TFACTOR] != envColor ) {
 273          RADEON_STATECHANGE( rmesa, tex[unit] );
 274          rmesa->hw.tex[unit].cmd[TEX_PP_TFACTOR] = envColor;
 275       }
 276       break;
 277    }
 278
 279    case GL_TEXTURE_LOD_BIAS_EXT: {
 280       GLfloat bias, min;
 281       GLuint b;
 282
 283       /* The Radeon's LOD bias is a signed 2's complement value with a
 284        * range of -1.0 <= bias < 4.0.  We break this into two linear
 285        * functions, one mapping [-1.0,0.0] to [-128,0] and one mapping
 286        * [0.0,4.0] to [0,127].
 287        */
 288       min = driQueryOptionb (&rmesa->radeon.optionCache, "no_neg_lod_bias") ?
 289           0.0 : -1.0;
 290       bias = CLAMP( *param, min, 4.0 );
 291       if ( bias == 0 ) {
 292          b = 0;
 293       } else if ( bias > 0 ) {
 294          b = ((GLuint)SCALED_FLOAT_TO_BYTE( bias, 4.0 )) << RADEON_LOD_BIAS_SHIFT;
 295       } else {
 296          b = ((GLuint)SCALED_FLOAT_TO_BYTE( bias, 1.0 )) << RADEON_LOD_BIAS_SHIFT;
 297       }
 298       if ( (rmesa->hw.tex[unit].cmd[TEX_PP_TXFILTER] & RADEON_LOD_BIAS_MASK) != b ) {
 299          RADEON_STATECHANGE( rmesa, tex[unit] );
 300          rmesa->hw.tex[unit].cmd[TEX_PP_TXFILTER] &= ~RADEON_LOD_BIAS_MASK;
 301          rmesa->hw.tex[unit].cmd[TEX_PP_TXFILTER] |= (b & RADEON_LOD_BIAS_MASK);
 302       }
 303       break;
 304    }
 305
 306    default:
 307       return;
 308    }
 309 }
 310
 311
 312 /**
 313  * Changes variables and flags for a state update, which will happen at the
 314  * next UpdateTextureState
 315  */
 316
 317 static void radeonTexParameter( GLcontext *ctx, GLenum target,
 318                                 struct gl_texture_object *texObj,
 319                                 GLenum pname, const GLfloat *params )
 320 {
 321    radeonTexObj* t = radeon_tex_obj(texObj);
 322
 323    if ( RADEON_DEBUG & (DEBUG_STATE|DEBUG_TEXTURE) ) {
 324       fprintf( stderr, "%s( %s )\n", __FUNCTION__,
 325                _mesa_lookup_enum_by_nr( pname ) );
 326    }
 327
 328    switch ( pname ) {
 329    case GL_TEXTURE_MIN_FILTER:
 330    case GL_TEXTURE_MAG_FILTER:
 331    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 332       radeonSetTexMaxAnisotropy( t, texObj->MaxAnisotropy );
 333       radeonSetTexFilter( t, texObj->MinFilter, texObj->MagFilter );
 334       break;
 335
 336    case GL_TEXTURE_WRAP_S:
 337    case GL_TEXTURE_WRAP_T:
 338       radeonSetTexWrap( t, texObj->WrapS, texObj->WrapT );
 339       break;
 340
 341    case GL_TEXTURE_BORDER_COLOR:
 342       radeonSetTexBorderColor( t, texObj->_BorderChan );
 343       break;
 344
 345    case GL_TEXTURE_BASE_LEVEL:
 346    case GL_TEXTURE_MAX_LEVEL:
 347    case GL_TEXTURE_MIN_LOD:
 348    case GL_TEXTURE_MAX_LOD:
 349
 350       /* This isn't the most efficient solution but there doesn't appear to
 351        * be a nice alternative.  Since there's no LOD clamping,
 352        * we just have to rely on loading the right subset of mipmap levels
 353        * to simulate a clamped LOD.
 354        */
 355       if (t->mt) {
 356          radeon_miptree_unreference(t->mt);
 357          t->mt = 0;
 358          t->validated = GL_FALSE;
 359       }
 360       break;
 361
 362    default:
 363       return;
 364    }
 365
 366    /* Mark this texobj as dirty (one bit per tex unit)
 367     */
 368    t->dirty_state = R100_TEX_ALL;
 369 }
 370
 371 static void radeonDeleteTexture( GLcontext *ctx,
 372                                  struct gl_texture_object *texObj )
 373 {
 374    r100ContextPtr rmesa = R100_CONTEXT(ctx);
 375    radeonTexObj* t = radeon_tex_obj(texObj);
 376    int i;
 377
 378    if ( RADEON_DEBUG & (DEBUG_STATE|DEBUG_TEXTURE) ) {
 379       fprintf( stderr, "%s( %p (target = %s) )\n", __FUNCTION__, (void *)texObj,
 380                _mesa_lookup_enum_by_nr( texObj->Target ) );
 381    }
 382
 383    if ( rmesa ) {
 384      radeon_firevertices(&rmesa->radeon);
 385      for ( i = 0 ; i < rmesa->radeon.glCtx->Const.MaxTextureUnits ; i++ ) {
 386        if ( t == rmesa->state.texture.unit[i].texobj ) {
 387          rmesa->state.texture.unit[i].texobj = NULL;
 388          rmesa->hw.tex[i].dirty = GL_FALSE;
 389          rmesa->hw.cube[i].dirty = GL_FALSE;
 390        }
 391      }
 392    }
 393
 394    if (t->mt) {
 395       radeon_miptree_unreference(t->mt);
 396       t->mt = 0;
 397    }
 398    /* Free mipmap images and the texture object itself */
 399    _mesa_delete_texture_object(ctx, texObj);
 400 }
 401
 402 /* Need:
 403  *  - Same GEN_MODE for all active bits
 404  *  - Same EyePlane/ObjPlane for all active bits when using Eye/Obj
 405  *  - STRQ presumably all supported (matrix means incoming R values
 406  *    can end up in STQ, this has implications for vertex support,
 407  *    presumably ok if maos is used, though?)
 408  *
 409  * Basically impossible to do this on the fly - just collect some
 410  * basic info & do the checks from ValidateState().
 411  */
 412 static void radeonTexGen( GLcontext *ctx,
 413                           GLenum coord,
 414                           GLenum pname,
 415                           const GLfloat *params )
 416 {
 417    r100ContextPtr rmesa = R100_CONTEXT(ctx);
 418    GLuint unit = ctx->Texture.CurrentUnit;
 419    rmesa->recheck_texgen[unit] = GL_TRUE;
 420 }
 421
 422 /**
 423  * Allocate a new texture object.
 424  * Called via ctx->Driver.NewTextureObject.
 425  * Note: we could use containment here to 'derive' the driver-specific
 426  * texture object from the core mesa gl_texture_object.  Not done at this time.
 427  */
 428 static struct gl_texture_object *
 429 radeonNewTextureObject( GLcontext *ctx, GLuint name, GLenum target )
 430 {
 431    r100ContextPtr rmesa = R100_CONTEXT(ctx);
 432    radeonTexObj* t = CALLOC_STRUCT(radeon_tex_obj);
 433
 434    _mesa_initialize_texture_object(&t->base, name, target);
 435    t->base.MaxAnisotropy = rmesa->radeon.initialMaxAnisotropy;
 436
 437    t->border_fallback = GL_FALSE;
 438
 439    t->pp_txfilter = RADEON_BORDER_MODE_OGL;
 440    t->pp_txformat = (RADEON_TXFORMAT_ENDIAN_NO_SWAP |
 441                      RADEON_TXFORMAT_PERSPECTIVE_ENABLE);
 442
 443    radeonSetTexWrap( t, t->base.WrapS, t->base.WrapT );
 444    radeonSetTexMaxAnisotropy( t, t->base.MaxAnisotropy );
 445    radeonSetTexFilter( t, t->base.MinFilter, t->base.MagFilter );
 446    radeonSetTexBorderColor( t, t->base._BorderChan );
 447    return &t->base;
 448 }
 449
 450
 451
 452 void radeonInitTextureFuncs( struct dd_function_table *functions )
 453 {
 454    functions->ChooseTextureFormat       = radeonChooseTextureFormat;
 455    functions->TexImage1D                = radeonTexImage1D;
 456    functions->TexImage2D                = radeonTexImage2D;
 457    functions->TexSubImage1D             = radeonTexSubImage1D;
 458    functions->TexSubImage2D             = radeonTexSubImage2D;
 459
 460    functions->NewTextureObject          = radeonNewTextureObject;
 461    //   functions->BindTexture          = radeonBindTexture;
 462    functions->DeleteTexture             = radeonDeleteTexture;
 463
 464    functions->TexEnv                    = radeonTexEnv;
 465    functions->TexParameter              = radeonTexParameter;
 466    functions->TexGen                    = radeonTexGen;
 467
 468    functions->CompressedTexImage2D      = radeonCompressedTexImage2D;
 469    functions->CompressedTexSubImage2D   = radeonCompressedTexSubImage2D;
 470
 471    functions->GenerateMipmap = radeonGenerateMipmap;
 472
 473    functions->NewTextureImage = radeonNewTextureImage;
 474    functions->FreeTexImageData = radeonFreeTexImageData;
 475    functions->MapTexture = radeonMapTexture;
 476    functions->UnmapTexture = radeonUnmapTexture;
 477
 478    driInitTextureFormats();
 479 }