src/mesa/drivers/dri/i810/i810tex.c

   1 /*
   2  * GLX Hardware Device Driver for Intel i810
   3  * Copyright (C) 1999 Keith Whitwell
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included
  13  * in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * KEITH WHITWELL, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
  21  * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  */
  24
  25 #include "glheader.h"
  26 #include "mtypes.h"
  27 #include "imports.h"
  28 #include "simple_list.h"
  29 #include "enums.h"
  30 #include "texstore.h"
  31 #include "texformat.h"
  32 #include "teximage.h"
  33 #include "texmem.h"
  34 #include "texobj.h"
  35 #include "swrast/swrast.h"
  36 #include "colormac.h"
  37 #include "texobj.h"
  38 #include "mm.h"
  39
  40 #include "i810screen.h"
  41 #include "i810_dri.h"
  42
  43 #include "i810context.h"
  44 #include "i810tex.h"
  45 #include "i810state.h"
  46 #include "i810ioctl.h"
  47
  48
  49 /*
  50  * Compute the 'S2.4' lod bias factor from the floating point OpenGL bias.
  51  */
  52 static GLuint i810ComputeLodBias(GLfloat bias)
  53 {
  54    int b = (int) (bias * 16.0) + 12;
  55    if (b > 63)
  56       b = 63;
  57    else if (b < -64)
  58       b = -64;
  59    return (GLuint) (b & MLC_LOD_BIAS_MASK);
  60 }
  61
  62
  63 static void i810SetTexWrapping(i810TextureObjectPtr tex,
  64                                GLenum swrap, GLenum twrap)
  65 {
  66    tex->Setup[I810_TEXREG_MCS] &= ~(MCS_U_STATE_MASK| MCS_V_STATE_MASK);
  67
  68    switch( swrap ) {
  69    case GL_REPEAT:
  70       tex->Setup[I810_TEXREG_MCS] |= MCS_U_WRAP;
  71       break;
  72    case GL_CLAMP:
  73    case GL_CLAMP_TO_EDGE:
  74       tex->Setup[I810_TEXREG_MCS] |= MCS_U_CLAMP;
  75       break;
  76    case GL_MIRRORED_REPEAT:
  77       tex->Setup[I810_TEXREG_MCS] |= MCS_U_MIRROR;
  78       break;
  79    default:
  80       _mesa_problem(NULL, "bad S wrap mode in %s", __FUNCTION__);
  81    }
  82
  83    switch( twrap ) {
  84    case GL_REPEAT:
  85       tex->Setup[I810_TEXREG_MCS] |= MCS_V_WRAP;
  86       break;
  87    case GL_CLAMP:
  88    case GL_CLAMP_TO_EDGE:
  89       tex->Setup[I810_TEXREG_MCS] |= MCS_V_CLAMP;
  90       break;
  91    case GL_MIRRORED_REPEAT:
  92       tex->Setup[I810_TEXREG_MCS] |= MCS_V_MIRROR;
  93       break;
  94    default:
  95       _mesa_problem(NULL, "bad T wrap mode in %s", __FUNCTION__);
  96    }
  97 }
  98
  99
 100 static void i810SetTexFilter(i810ContextPtr imesa,
 101                              i810TextureObjectPtr t,
 102                              GLenum minf, GLenum magf,
 103                              GLfloat bias)
 104 {
 105    t->Setup[I810_TEXREG_MF] &= ~(MF_MIN_MASK|
 106                                  MF_MAG_MASK|
 107                                  MF_MIP_MASK);
 108    t->Setup[I810_TEXREG_MLC] &= ~(MLC_LOD_BIAS_MASK);
 109
 110    switch (minf) {
 111    case GL_NEAREST:
 112       t->Setup[I810_TEXREG_MF] |= MF_MIN_NEAREST | MF_MIP_NONE;
 113       break;
 114    case GL_LINEAR:
 115       t->Setup[I810_TEXREG_MF] |= MF_MIN_LINEAR | MF_MIP_NONE;
 116       break;
 117    case GL_NEAREST_MIPMAP_NEAREST:
 118       t->Setup[I810_TEXREG_MF] |= MF_MIN_NEAREST | MF_MIP_NEAREST;
 119       if (magf == GL_LINEAR) {
 120          /*bias -= 0.5;*/  /* this doesn't work too good */
 121       }
 122       break;
 123    case GL_LINEAR_MIPMAP_NEAREST:
 124       t->Setup[I810_TEXREG_MF] |= MF_MIN_LINEAR | MF_MIP_NEAREST;
 125       break;
 126    case GL_NEAREST_MIPMAP_LINEAR:
 127       if (IS_I815(imesa))
 128          t->Setup[I810_TEXREG_MF] |= MF_MIN_NEAREST | MF_MIP_LINEAR;
 129       else
 130          t->Setup[I810_TEXREG_MF] |= MF_MIN_NEAREST | MF_MIP_DITHER;
 131       /*
 132       if (magf == GL_LINEAR) {
 133          bias -= 0.5;
 134       }
 135       */
 136       bias -= 0.5; /* always biasing here looks better */
 137       break;
 138    case GL_LINEAR_MIPMAP_LINEAR:
 139       if (IS_I815(imesa))
 140          t->Setup[I810_TEXREG_MF] |= MF_MIN_LINEAR | MF_MIP_LINEAR;
 141       else
 142          t->Setup[I810_TEXREG_MF] |= MF_MIN_LINEAR | MF_MIP_DITHER;
 143       break;
 144    default:
 145       return;
 146    }
 147
 148    switch (magf) {
 149    case GL_NEAREST:
 150       t->Setup[I810_TEXREG_MF] |= MF_MAG_NEAREST;
 151       break;
 152    case GL_LINEAR:
 153       t->Setup[I810_TEXREG_MF] |= MF_MAG_LINEAR;
 154       break;
 155    default:
 156       return;
 157    }
 158
 159    t->Setup[I810_TEXREG_MLC] |= i810ComputeLodBias(bias);
 160 }
 161
 162
 163 static void
 164 i810SetTexBorderColor( i810TextureObjectPtr t, GLubyte color[4] )
 165 {
 166    /* Need a fallback.
 167     */
 168 }
 169
 170
 171 static i810TextureObjectPtr
 172 i810AllocTexObj( GLcontext *ctx, struct gl_texture_object *texObj )
 173 {
 174    i810TextureObjectPtr t;
 175    i810ContextPtr imesa = I810_CONTEXT(ctx);
 176
 177    t = CALLOC_STRUCT( i810_texture_object_t );
 178    texObj->DriverData = t;
 179    if ( t != NULL ) {
 180       GLfloat bias = ctx->Texture.Unit[ctx->Texture.CurrentUnit].LodBias;
 181       /* Initialize non-image-dependent parts of the state:
 182        */
 183       t->base.tObj = texObj;
 184       t->Setup[I810_TEXREG_MI0] = GFX_OP_MAP_INFO;
 185       t->Setup[I810_TEXREG_MI1] = MI1_MAP_0;
 186       t->Setup[I810_TEXREG_MI2] = MI2_DIMENSIONS_ARE_LOG2;
 187       t->Setup[I810_TEXREG_MLC] = (GFX_OP_MAP_LOD_CTL |
 188                                    MLC_MAP_0 |
 189                                    /*MLC_DITHER_WEIGHT_FULL |*/
 190                                    MLC_DITHER_WEIGHT_12 |
 191                                    MLC_UPDATE_LOD_BIAS |
 192                                    0x0);
 193       t->Setup[I810_TEXREG_MCS] = (GFX_OP_MAP_COORD_SETS |
 194                                    MCS_COORD_0 |
 195                                    MCS_UPDATE_NORMALIZED |
 196                                    MCS_NORMALIZED_COORDS |
 197                                    MCS_UPDATE_V_STATE |
 198                                    MCS_V_WRAP |
 199                                    MCS_UPDATE_U_STATE |
 200                                    MCS_U_WRAP);
 201       t->Setup[I810_TEXREG_MF] = (GFX_OP_MAP_FILTER |
 202                                   MF_MAP_0 |
 203                                   MF_UPDATE_ANISOTROPIC |
 204                                   MF_UPDATE_MIP_FILTER |
 205                                   MF_UPDATE_MAG_FILTER |
 206                                   MF_UPDATE_MIN_FILTER);
 207
 208       make_empty_list( & t->base );
 209
 210       i810SetTexWrapping( t, texObj->WrapS, texObj->WrapT );
 211       /*i830SetTexMaxAnisotropy( t, texObj->MaxAnisotropy );*/
 212       i810SetTexFilter( imesa, t, texObj->MinFilter, texObj->MagFilter, bias );
 213       i810SetTexBorderColor( t, texObj->_BorderChan );
 214    }
 215
 216    return t;
 217 }
 218
 219
 220 static void i810TexParameter( GLcontext *ctx, GLenum target,
 221                               struct gl_texture_object *tObj,
 222                               GLenum pname, const GLfloat *params )
 223 {
 224    i810ContextPtr imesa = I810_CONTEXT(ctx);
 225    i810TextureObjectPtr t = (i810TextureObjectPtr) tObj->DriverData;
 226
 227    if (!t)
 228       return;
 229
 230    if ( target != GL_TEXTURE_2D )
 231       return;
 232
 233    /* Can't do the update now as we don't know whether to flush
 234     * vertices or not.  Setting imesa->new_state means that
 235     * i810UpdateTextureState() will be called before any triangles are
 236     * rendered.  If a statechange has occurred, it will be detected at
 237     * that point, and buffered vertices flushed.
 238     */
 239    switch (pname) {
 240    case GL_TEXTURE_MIN_FILTER:
 241    case GL_TEXTURE_MAG_FILTER:
 242       {
 243          GLfloat bias = ctx->Texture.Unit[ctx->Texture.CurrentUnit].LodBias;
 244          i810SetTexFilter( imesa, t, tObj->MinFilter, tObj->MagFilter, bias );
 245       }
 246       break;
 247
 248    case GL_TEXTURE_WRAP_S:
 249    case GL_TEXTURE_WRAP_T:
 250       i810SetTexWrapping( t, tObj->WrapS, tObj->WrapT );
 251       break;
 252
 253    case GL_TEXTURE_BORDER_COLOR:
 254       i810SetTexBorderColor( t, tObj->_BorderChan );
 255       break;
 256
 257    case GL_TEXTURE_BASE_LEVEL:
 258    case GL_TEXTURE_MAX_LEVEL:
 259    case GL_TEXTURE_MIN_LOD:
 260    case GL_TEXTURE_MAX_LOD:
 261       /* This isn't the most efficient solution but there doesn't appear to
 262        * be a nice alternative for Radeon.  Since there's no LOD clamping,
 263        * we just have to rely on loading the right subset of mipmap levels
 264        * to simulate a clamped LOD.
 265        */
 266       I810_FIREVERTICES( I810_CONTEXT(ctx) );
 267       driSwapOutTextureObject( (driTextureObject *) t );
 268       break;
 269
 270    default:
 271       return;
 272    }
 273
 274    if (t == imesa->CurrentTexObj[0]) {
 275       I810_STATECHANGE( imesa, I810_UPLOAD_TEX0 );
 276    }
 277
 278    if (t == imesa->CurrentTexObj[1]) {
 279       I810_STATECHANGE( imesa, I810_UPLOAD_TEX1 );
 280    }
 281 }
 282
 283
 284 /**
 285  * Setup hardware bits for new texture environment settings.
 286  *
 287  * \todo
 288  * Determine whether or not \c param can be used instead of
 289  * \c texUnit->EnvColor in the \c GL_TEXTURE_ENV_COLOR case.
 290  */
 291 static void i810TexEnv( GLcontext *ctx, GLenum target,
 292                         GLenum pname, const GLfloat *param )
 293 {
 294    i810ContextPtr imesa = I810_CONTEXT( ctx );
 295    const GLuint unit = ctx->Texture.CurrentUnit;
 296    const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 297
 298    /* Only one env color.  Need a fallback if env colors are different
 299     * and texture setup references env color in both units.
 300     */
 301    switch (pname) {
 302    case GL_TEXTURE_ENV_COLOR: {
 303       GLubyte c[4];
 304       GLuint envColor;
 305
 306       UNCLAMPED_FLOAT_TO_RGBA_CHAN( c, texUnit->EnvColor );
 307       envColor = PACK_COLOR_8888( c[3], c[0], c[1], c[2] );
 308
 309       if (imesa->Setup[I810_CTXREG_CF1] != envColor) {
 310          I810_STATECHANGE(imesa, I810_UPLOAD_CTX);
 311          imesa->Setup[I810_CTXREG_CF1] = envColor;
 312       }
 313       break;
 314    }
 315
 316    case GL_TEXTURE_ENV_MODE:
 317       imesa->TexEnvImageFmt[unit] = 0; /* force recalc of env state */
 318       break;
 319
 320    case GL_TEXTURE_LOD_BIAS: {
 321       if ( texUnit->_Current != NULL ) {
 322          const struct gl_texture_object *tObj = texUnit->_Current;
 323          i810TextureObjectPtr t = (i810TextureObjectPtr) tObj->DriverData;
 324
 325          t->Setup[I810_TEXREG_MLC] &= ~(MLC_LOD_BIAS_MASK);
 326          t->Setup[I810_TEXREG_MLC] |= i810ComputeLodBias(*param);
 327       }
 328       break;
 329    }
 330
 331    default:
 332       break;
 333    }
 334 }
 335
 336
 337
 338 #if 0
 339 static void i810TexImage1D( GLcontext *ctx, GLenum target, GLint level,
 340                             GLint internalFormat,
 341                             GLint width, GLint border,
 342                             GLenum format, GLenum type,
 343                             const GLvoid *pixels,
 344                             const struct gl_pixelstore_attrib *pack,
 345                             struct gl_texture_object *texObj,
 346                             struct gl_texture_image *texImage )
 347 {
 348    i810TextureObjectPtr t = (i810TextureObjectPtr) texObj->DriverData;
 349    if (t) {
 350       i810SwapOutTexObj( imesa, t );
 351    }
 352 }
 353
 354 static void i810TexSubImage1D( GLcontext *ctx,
 355                                GLenum target,
 356                                GLint level,
 357                                GLint xoffset,
 358                                GLsizei width,
 359                                GLenum format, GLenum type,
 360                                const GLvoid *pixels,
 361                                const struct gl_pixelstore_attrib *pack,
 362                                struct gl_texture_object *texObj,
 363                                struct gl_texture_image *texImage )
 364 {
 365 }
 366 #endif
 367
 368
 369 static void i810TexImage2D( GLcontext *ctx, GLenum target, GLint level,
 370                             GLint internalFormat,
 371                             GLint width, GLint height, GLint border,
 372                             GLenum format, GLenum type, const GLvoid *pixels,
 373                             const struct gl_pixelstore_attrib *packing,
 374                             struct gl_texture_object *texObj,
 375                             struct gl_texture_image *texImage )
 376 {
 377    driTextureObject *t = (driTextureObject *) texObj->DriverData;
 378    if (t) {
 379       I810_FIREVERTICES( I810_CONTEXT(ctx) );
 380       driSwapOutTextureObject( t );
 381    }
 382    else {
 383       t = (driTextureObject *) i810AllocTexObj( ctx, texObj );
 384       if (!t) {
 385          _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage2D");
 386          return;
 387       }
 388    }
 389    _mesa_store_teximage2d( ctx, target, level, internalFormat,
 390                            width, height, border, format, type,
 391                            pixels, packing, texObj, texImage );
 392 }
 393
 394 static void i810TexSubImage2D( GLcontext *ctx,
 395                                GLenum target,
 396                                GLint level,
 397                                GLint xoffset, GLint yoffset,
 398                                GLsizei width, GLsizei height,
 399                                GLenum format, GLenum type,
 400                                const GLvoid *pixels,
 401                                const struct gl_pixelstore_attrib *packing,
 402                                struct gl_texture_object *texObj,
 403                                struct gl_texture_image *texImage )
 404 {
 405    driTextureObject *t = (driTextureObject *)texObj->DriverData;
 406    if (t) {
 407      I810_FIREVERTICES( I810_CONTEXT(ctx) );
 408      driSwapOutTextureObject( t );
 409    }
 410    _mesa_store_texsubimage2d(ctx, target, level, xoffset, yoffset, width,
 411                              height, format, type, pixels, packing, texObj,
 412                              texImage);
 413 }
 414
 415
 416 static void i810BindTexture( GLcontext *ctx, GLenum target,
 417                              struct gl_texture_object *tObj )
 418 {
 419    assert( (target != GL_TEXTURE_2D) || (tObj->DriverData != NULL) );
 420 }
 421
 422
 423 static void i810DeleteTexture( GLcontext *ctx, struct gl_texture_object *tObj )
 424 {
 425    driTextureObject * t = (driTextureObject *) tObj->DriverData;
 426    if (t) {
 427       i810ContextPtr imesa = I810_CONTEXT( ctx );
 428       if (imesa)
 429          I810_FIREVERTICES( imesa );
 430       driDestroyTextureObject( t );
 431    }
 432    /* Free mipmap images and the texture object itself */
 433    _mesa_delete_texture_object(ctx, tObj);
 434 }
 435
 436 /**
 437  * Choose a Mesa texture format to match the requested format.
 438  *
 439  * The i810 only supports 5 texture modes that are useful to Mesa.  That
 440  * makes this routine pretty simple.
 441  */
 442 static const struct gl_texture_format *
 443 i810ChooseTextureFormat( GLcontext *ctx, GLint internalFormat,
 444                          GLenum format, GLenum type )
 445 {
 446    switch ( internalFormat ) {
 447    case 4:
 448    case GL_RGBA:
 449    case GL_RGBA2:
 450    case GL_RGBA4:
 451    case GL_RGB5_A1:
 452    case GL_RGBA8:
 453    case GL_RGB10_A2:
 454    case GL_RGBA12:
 455    case GL_RGBA16:
 456    case GL_COMPRESSED_RGBA:
 457       if ( ((format == GL_BGRA) && (type == GL_UNSIGNED_SHORT_1_5_5_5_REV))
 458            || ((format == GL_RGBA) && (type == GL_UNSIGNED_SHORT_5_5_5_1))
 459            || (internalFormat == GL_RGB5_A1) ) {
 460          return &_mesa_texformat_argb1555;
 461       }
 462       return &_mesa_texformat_argb4444;
 463
 464    case 3:
 465    case GL_RGB:
 466    case GL_COMPRESSED_RGB:
 467    case GL_R3_G3_B2:
 468    case GL_RGB4:
 469    case GL_RGB5:
 470    case GL_RGB8:
 471    case GL_RGB10:
 472    case GL_RGB12:
 473    case GL_RGB16:
 474       return &_mesa_texformat_rgb565;
 475
 476    case GL_ALPHA:
 477    case GL_ALPHA4:
 478    case GL_ALPHA8:
 479    case GL_ALPHA12:
 480    case GL_ALPHA16:
 481    case GL_COMPRESSED_ALPHA:
 482    case 1:
 483    case GL_LUMINANCE:
 484    case GL_LUMINANCE4:
 485    case GL_LUMINANCE8:
 486    case GL_LUMINANCE12:
 487    case GL_LUMINANCE16:
 488    case GL_COMPRESSED_LUMINANCE:
 489    case 2:
 490    case GL_LUMINANCE_ALPHA:
 491    case GL_LUMINANCE4_ALPHA4:
 492    case GL_LUMINANCE6_ALPHA2:
 493    case GL_LUMINANCE8_ALPHA8:
 494    case GL_LUMINANCE12_ALPHA4:
 495    case GL_LUMINANCE12_ALPHA12:
 496    case GL_LUMINANCE16_ALPHA16:
 497    case GL_COMPRESSED_LUMINANCE_ALPHA:
 498    case GL_INTENSITY:
 499    case GL_INTENSITY4:
 500    case GL_INTENSITY8:
 501    case GL_INTENSITY12:
 502    case GL_INTENSITY16:
 503    case GL_COMPRESSED_INTENSITY:
 504       return &_mesa_texformat_al88;
 505
 506    case GL_YCBCR_MESA:
 507       if (type == GL_UNSIGNED_SHORT_8_8_MESA ||
 508           type == GL_UNSIGNED_BYTE)
 509          return &_mesa_texformat_ycbcr;
 510       else
 511          return &_mesa_texformat_ycbcr_rev;
 512
 513    default:
 514       fprintf(stderr, "unexpected texture format in %s\n", __FUNCTION__);
 515       return NULL;
 516    }
 517
 518    return NULL; /* never get here */
 519 }
 520
 521 /**
 522  * Allocate a new texture object.
 523  * Called via ctx->Driver.NewTextureObject.
 524  * Note: this function will be called during context creation to
 525  * allocate the default texture objects.
 526  * Note: we could use containment here to 'derive' the driver-specific
 527  * texture object from the core mesa gl_texture_object.  Not done at this time.
 528  */
 529 static struct gl_texture_object *
 530 i810NewTextureObject( GLcontext *ctx, GLuint name, GLenum target )
 531 {
 532    struct gl_texture_object *obj;
 533    obj = _mesa_new_texture_object(ctx, name, target);
 534    i810AllocTexObj( ctx, obj );
 535    return obj;
 536 }
 537
 538 void i810InitTextureFuncs( struct dd_function_table *functions )
 539 {
 540    functions->ChooseTextureFormat = i810ChooseTextureFormat;
 541    functions->TexImage2D = i810TexImage2D;
 542    functions->TexSubImage2D = i810TexSubImage2D;
 543    functions->BindTexture = i810BindTexture;
 544    functions->NewTextureObject = i810NewTextureObject;
 545    functions->DeleteTexture = i810DeleteTexture;
 546    functions->TexParameter = i810TexParameter;
 547    functions->TexEnv = i810TexEnv;
 548    functions->IsTextureResident = driIsTextureResident;
 549 }