src/mesa/drivers/dri/unichrome/via_tex.c

   1 /*
   2  * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
   3  * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
   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, sub license,
   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 (including the
  13  * next paragraph) shall be included in all copies or substantial portions
  14  * of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 #include <stdlib.h>
  27 #include <stdio.h>
  28
  29 #include "main/glheader.h"
  30 #include "main/macros.h"
  31 #include "main/mtypes.h"
  32 #include "main/enums.h"
  33 #include "main/formats.h"
  34 #include "main/colortab.h"
  35 #include "main/convolve.h"
  36 #include "main/context.h"
  37 #include "main/mipmap.h"
  38 #include "main/mm.h"
  39 #include "main/simple_list.h"
  40 #include "main/texcompress.h"
  41 #include "main/texobj.h"
  42 #include "main/texstore.h"
  43
  44 #include "via_context.h"
  45 #include "via_fb.h"
  46 #include "via_tex.h"
  47 #include "via_state.h"
  48 #include "via_ioctl.h"
  49 #include "via_3d_reg.h"
  50
  51 static gl_format
  52 viaChooseTexFormat( GLcontext *ctx, GLint internalFormat,
  53                     GLenum format, GLenum type )
  54 {
  55    struct via_context *vmesa = VIA_CONTEXT(ctx);
  56    const GLboolean do32bpt = ( vmesa->viaScreen->bitsPerPixel == 32
  57 /*                             && vmesa->viaScreen->textureSize > 4*1024*1024 */
  58       );
  59
  60
  61    switch ( internalFormat ) {
  62    case 4:
  63    case GL_RGBA:
  64    case GL_COMPRESSED_RGBA:
  65       if ( format == GL_BGRA ) {
  66          if ( type == GL_UNSIGNED_INT_8_8_8_8_REV ||
  67               type == GL_UNSIGNED_BYTE ) {
  68             return MESA_FORMAT_ARGB8888;
  69          }
  70          else if ( type == GL_UNSIGNED_SHORT_4_4_4_4_REV ) {
  71             return MESA_FORMAT_ARGB4444;
  72          }
  73          else if ( type == GL_UNSIGNED_SHORT_1_5_5_5_REV ) {
  74             return MESA_FORMAT_ARGB1555;
  75          }
  76       }
  77       else if ( type == GL_UNSIGNED_BYTE ||
  78                 type == GL_UNSIGNED_INT_8_8_8_8_REV ||
  79                 type == GL_UNSIGNED_INT_8_8_8_8 ) {
  80          return MESA_FORMAT_ARGB8888;
  81       }
  82       return do32bpt ? MESA_FORMAT_ARGB8888 : MESA_FORMAT_ARGB4444;
  83
  84    case 3:
  85    case GL_RGB:
  86    case GL_COMPRESSED_RGB:
  87       if ( format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5 ) {
  88          return MESA_FORMAT_RGB565;
  89       }
  90       else if ( type == GL_UNSIGNED_BYTE ) {
  91          return MESA_FORMAT_ARGB8888;
  92       }
  93       return do32bpt ? MESA_FORMAT_ARGB8888 : MESA_FORMAT_RGB565;
  94
  95    case GL_RGBA8:
  96    case GL_RGB10_A2:
  97    case GL_RGBA12:
  98    case GL_RGBA16:
  99       return MESA_FORMAT_ARGB8888;
 100
 101    case GL_RGBA4:
 102    case GL_RGBA2:
 103       return MESA_FORMAT_ARGB4444;
 104
 105    case GL_RGB5_A1:
 106       return MESA_FORMAT_ARGB1555;
 107
 108    case GL_RGB8:
 109    case GL_RGB10:
 110    case GL_RGB12:
 111    case GL_RGB16:
 112       return MESA_FORMAT_ARGB8888;
 113
 114    case GL_RGB5:
 115    case GL_RGB4:
 116    case GL_R3_G3_B2:
 117       return MESA_FORMAT_RGB565;
 118
 119    case GL_ALPHA:
 120    case GL_ALPHA4:
 121    case GL_ALPHA8:
 122    case GL_ALPHA12:
 123    case GL_ALPHA16:
 124    case GL_COMPRESSED_ALPHA:
 125       return MESA_FORMAT_A8;
 126
 127    case 1:
 128    case GL_LUMINANCE:
 129    case GL_LUMINANCE4:
 130    case GL_LUMINANCE8:
 131    case GL_LUMINANCE12:
 132    case GL_LUMINANCE16:
 133    case GL_COMPRESSED_LUMINANCE:
 134       return MESA_FORMAT_L8;
 135
 136    case 2:
 137    case GL_LUMINANCE_ALPHA:
 138    case GL_LUMINANCE4_ALPHA4:
 139    case GL_LUMINANCE6_ALPHA2:
 140    case GL_LUMINANCE8_ALPHA8:
 141    case GL_LUMINANCE12_ALPHA4:
 142    case GL_LUMINANCE12_ALPHA12:
 143    case GL_LUMINANCE16_ALPHA16:
 144    case GL_COMPRESSED_LUMINANCE_ALPHA:
 145       return MESA_FORMAT_AL88;
 146
 147    case GL_INTENSITY:
 148    case GL_INTENSITY4:
 149    case GL_INTENSITY8:
 150    case GL_INTENSITY12:
 151    case GL_INTENSITY16:
 152    case GL_COMPRESSED_INTENSITY:
 153       return MESA_FORMAT_I8;
 154
 155    case GL_YCBCR_MESA:
 156       if (type == GL_UNSIGNED_SHORT_8_8_MESA ||
 157           type == GL_UNSIGNED_BYTE)
 158          return MESA_FORMAT_YCBCR;
 159       else
 160          return MESA_FORMAT_YCBCR_REV;
 161
 162    case GL_COMPRESSED_RGB_FXT1_3DFX:
 163       return MESA_FORMAT_RGB_FXT1;
 164    case GL_COMPRESSED_RGBA_FXT1_3DFX:
 165       return MESA_FORMAT_RGBA_FXT1;
 166
 167    case GL_RGB_S3TC:
 168    case GL_RGB4_S3TC:
 169    case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
 170       return MESA_FORMAT_RGB_DXT1;
 171
 172    case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
 173       return MESA_FORMAT_RGBA_DXT1;
 174
 175    case GL_RGBA_S3TC:
 176    case GL_RGBA4_S3TC:
 177    case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
 178       return MESA_FORMAT_RGBA_DXT3;
 179
 180    case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
 181       return MESA_FORMAT_RGBA_DXT5;
 182
 183    case GL_COLOR_INDEX:
 184    case GL_COLOR_INDEX1_EXT:
 185    case GL_COLOR_INDEX2_EXT:
 186    case GL_COLOR_INDEX4_EXT:
 187    case GL_COLOR_INDEX8_EXT:
 188    case GL_COLOR_INDEX12_EXT:
 189    case GL_COLOR_INDEX16_EXT:
 190       return MESA_FORMAT_CI8;
 191
 192    default:
 193       fprintf(stderr, "unexpected texture format %s in %s\n",
 194               _mesa_lookup_enum_by_nr(internalFormat),
 195               __FUNCTION__);
 196       return MESA_FORMAT_NONE;
 197    }
 198
 199    return MESA_FORMAT_NONE; /* never get here */
 200 }
 201
 202 static int logbase2(int n)
 203 {
 204    GLint i = 1;
 205    GLint log2 = 0;
 206
 207    while (n > i) {
 208       i *= 2;
 209       log2++;
 210    }
 211
 212    return log2;
 213 }
 214
 215 static const char *get_memtype_name( GLint memType )
 216 {
 217    static const char *names[] = {
 218       "VIA_MEM_VIDEO",
 219       "VIA_MEM_AGP",
 220       "VIA_MEM_SYSTEM",
 221       "VIA_MEM_MIXED",
 222       "VIA_MEM_UNKNOWN"
 223    };
 224
 225    return names[memType];
 226 }
 227
 228
 229 static GLboolean viaMoveTexBuffers( struct via_context *vmesa,
 230                                     struct via_tex_buffer **buffers,
 231                                     GLuint nr,
 232                                     GLint newMemType )
 233 {
 234    struct via_tex_buffer *newTexBuf[VIA_MAX_TEXLEVELS];
 235    GLint i;
 236
 237    if (VIA_DEBUG & DEBUG_TEXTURE)
 238       fprintf(stderr, "%s to %s\n",
 239               __FUNCTION__,
 240               get_memtype_name(newMemType));
 241
 242    memset(newTexBuf, 0, sizeof(newTexBuf));
 243
 244    /* First do all the allocations (or fail):
 245     */
 246    for (i = 0; i < nr; i++) {
 247       if (buffers[i]->memType != newMemType) {
 248
 249          /* Don't allow uploads in a thrash state.  Should try and
 250           * catch this earlier.
 251           */
 252          if (vmesa->thrashing && newMemType != VIA_MEM_SYSTEM)
 253             goto cleanup;
 254
 255          newTexBuf[i] = via_alloc_texture(vmesa,
 256                                           buffers[i]->size,
 257                                           newMemType);
 258          if (!newTexBuf[i])
 259             goto cleanup;
 260       }
 261    }
 262
 263
 264    /* Now copy all the image data and free the old texture memory.
 265     */
 266    for (i = 0; i < nr; i++) {
 267       if (newTexBuf[i]) {
 268          memcpy(newTexBuf[i]->bufAddr,
 269                 buffers[i]->bufAddr,
 270                 buffers[i]->size);
 271
 272          newTexBuf[i]->image = buffers[i]->image;
 273          newTexBuf[i]->image->texMem = newTexBuf[i];
 274          newTexBuf[i]->image->image.Data = newTexBuf[i]->bufAddr;
 275          via_free_texture(vmesa, buffers[i]);
 276       }
 277    }
 278
 279    if (VIA_DEBUG & DEBUG_TEXTURE)
 280       fprintf(stderr, "%s - success\n", __FUNCTION__);
 281
 282    return GL_TRUE;
 283
 284  cleanup:
 285    /* Release any allocations made prior to failure:
 286     */
 287    if (VIA_DEBUG & DEBUG_TEXTURE)
 288       fprintf(stderr, "%s - failed\n", __FUNCTION__);
 289
 290    for (i = 0; i < nr; i++) {
 291       if (newTexBuf[i]) {
 292          via_free_texture(vmesa, newTexBuf[i]);
 293       }
 294    }
 295
 296    return GL_FALSE;
 297 }
 298
 299
 300 static GLboolean viaMoveTexObject( struct via_context *vmesa,
 301                                    struct via_texture_object *viaObj,
 302                                    GLint newMemType )
 303 {
 304    struct via_texture_image **viaImage =
 305       (struct via_texture_image **)&viaObj->obj.Image[0][0];
 306    struct via_tex_buffer *buffers[VIA_MAX_TEXLEVELS];
 307    GLuint i, nr = 0;
 308
 309    for (i = viaObj->firstLevel; i <= viaObj->lastLevel; i++)
 310       buffers[nr++] = viaImage[i]->texMem;
 311
 312    if (viaMoveTexBuffers( vmesa, &buffers[0], nr, newMemType )) {
 313       viaObj->memType = newMemType;
 314       return GL_TRUE;
 315    }
 316
 317    return GL_FALSE;
 318 }
 319
 320
 321
 322 static GLboolean viaSwapInTexObject( struct via_context *vmesa,
 323                                      struct via_texture_object *viaObj )
 324 {
 325    const struct via_texture_image *baseImage =
 326       (struct via_texture_image *)viaObj->obj.Image[0][viaObj->obj.BaseLevel];
 327
 328    if (VIA_DEBUG & DEBUG_TEXTURE)
 329       fprintf(stderr, "%s\n", __FUNCTION__);
 330
 331    if (baseImage->texMem->memType != VIA_MEM_SYSTEM)
 332       return viaMoveTexObject( vmesa, viaObj, baseImage->texMem->memType );
 333
 334    return (viaMoveTexObject( vmesa, viaObj, VIA_MEM_AGP ) ||
 335            viaMoveTexObject( vmesa, viaObj, VIA_MEM_VIDEO ));
 336 }
 337
 338
 339 /* This seems crude, but it asks a fairly pertinent question and gives
 340  * an accurate answer:
 341  */
 342 static GLboolean viaIsTexMemLow( struct via_context *vmesa,
 343                                  GLuint heap )
 344 {
 345    struct via_tex_buffer *buf =  via_alloc_texture(vmesa, 512 * 1024, heap );
 346    if (!buf)
 347       return GL_TRUE;
 348
 349    via_free_texture(vmesa, buf);
 350    return GL_FALSE;
 351 }
 352
 353
 354 /* Speculatively move texture images which haven't been used in a
 355  * while back to system memory.
 356  *
 357  * TODO: only do this when texture memory is low.
 358  *
 359  * TODO: use dma.
 360  *
 361  * TODO: keep the fb/agp version hanging around and use the local
 362  * version as backing store, so re-upload might be avoided.
 363  *
 364  * TODO: do this properly in the kernel...
 365  */
 366 GLboolean viaSwapOutWork( struct via_context *vmesa )
 367 {
 368    struct via_tex_buffer *s, *tmp;
 369    GLuint done = 0;
 370    GLuint heap, target;
 371
 372    if (VIA_DEBUG & DEBUG_TEXTURE)
 373       fprintf(stderr, "%s VID %d AGP %d SYS %d\n", __FUNCTION__,
 374               vmesa->total_alloc[VIA_MEM_VIDEO],
 375               vmesa->total_alloc[VIA_MEM_AGP],
 376               vmesa->total_alloc[VIA_MEM_SYSTEM]);
 377
 378
 379    for (heap = VIA_MEM_VIDEO; heap <= VIA_MEM_AGP; heap++) {
 380       GLuint nr = 0, sz = 0;
 381
 382       if (vmesa->thrashing) {
 383          if (VIA_DEBUG & DEBUG_TEXTURE)
 384             fprintf(stderr, "Heap %d: trash flag\n", heap);
 385          target = 1*1024*1024;
 386       }
 387       else if (viaIsTexMemLow(vmesa, heap)) {
 388          if (VIA_DEBUG & DEBUG_TEXTURE)
 389             fprintf(stderr, "Heap %d: low memory\n", heap);
 390          target = 64*1024;
 391       }
 392       else {
 393          if (VIA_DEBUG & DEBUG_TEXTURE)
 394             fprintf(stderr, "Heap %d: nothing to do\n", heap);
 395          continue;
 396       }
 397
 398       foreach_s( s, tmp, &vmesa->tex_image_list[heap] ) {
 399          if (s->lastUsed < vmesa->lastSwap[1]) {
 400             struct via_texture_object *viaObj =
 401                (struct via_texture_object *) s->image->image.TexObject;
 402
 403             if (VIA_DEBUG & DEBUG_TEXTURE)
 404                fprintf(stderr,
 405                        "back copy tex sz %d, lastUsed %d lastSwap %d\n",
 406                        s->size, s->lastUsed, vmesa->lastSwap[1]);
 407
 408             if (viaMoveTexBuffers( vmesa, &s, 1, VIA_MEM_SYSTEM )) {
 409                viaObj->memType = VIA_MEM_MIXED;
 410                done += s->size;
 411             }
 412             else {
 413                if (VIA_DEBUG & DEBUG_TEXTURE)
 414                   fprintf(stderr, "Failed to back copy texture!\n");
 415                sz += s->size;
 416             }
 417          }
 418          else {
 419             nr ++;
 420             sz += s->size;
 421          }
 422
 423          if (done > target) {
 424             vmesa->thrashing = GL_FALSE; /* might not get set otherwise? */
 425             return GL_TRUE;
 426          }
 427       }
 428
 429       assert(sz == vmesa->total_alloc[heap]);
 430
 431       if (VIA_DEBUG & DEBUG_TEXTURE)
 432          fprintf(stderr, "Heap %d: nr %d tot sz %d\n", heap, nr, sz);
 433    }
 434
 435
 436    return done != 0;
 437 }
 438
 439
 440
 441 /* Basically, just collect the image dimensions and addresses for each
 442  * image and update the texture object state accordingly.
 443  */
 444 static GLboolean viaSetTexImages(GLcontext *ctx,
 445                                  struct gl_texture_object *texObj)
 446 {
 447    struct via_context *vmesa = VIA_CONTEXT(ctx);
 448    struct via_texture_object *viaObj = (struct via_texture_object *)texObj;
 449    const struct via_texture_image *baseImage =
 450       (struct via_texture_image *)texObj->Image[0][texObj->BaseLevel];
 451    GLint firstLevel, lastLevel, numLevels;
 452    GLuint texFormat;
 453    GLint w, h, p;
 454    GLint i, j = 0, k = 0, l = 0, m = 0;
 455    GLuint texBase;
 456    GLuint basH = 0;
 457    GLuint widthExp = 0;
 458    GLuint heightExp = 0;
 459
 460    switch (baseImage->image.TexFormat) {
 461    case MESA_FORMAT_ARGB8888:
 462       texFormat = HC_HTXnFM_ARGB8888;
 463       break;
 464    case MESA_FORMAT_ARGB4444:
 465       texFormat = HC_HTXnFM_ARGB4444;
 466       break;
 467    case MESA_FORMAT_RGB565:
 468       texFormat = HC_HTXnFM_RGB565;
 469       break;
 470    case MESA_FORMAT_ARGB1555:
 471       texFormat = HC_HTXnFM_ARGB1555;
 472       break;
 473    case MESA_FORMAT_RGB888:
 474       texFormat = HC_HTXnFM_ARGB0888;
 475       break;
 476    case MESA_FORMAT_L8:
 477       texFormat = HC_HTXnFM_L8;
 478       break;
 479    case MESA_FORMAT_I8:
 480       texFormat = HC_HTXnFM_T8;
 481       break;
 482    case MESA_FORMAT_CI8:
 483       texFormat = HC_HTXnFM_Index8;
 484       break;
 485    case MESA_FORMAT_AL88:
 486       texFormat = HC_HTXnFM_AL88;
 487       break;
 488    case MESA_FORMAT_A8:
 489       texFormat = HC_HTXnFM_A8;
 490       break;
 491    default:
 492       _mesa_problem(vmesa->glCtx, "Bad texture format in viaSetTexImages");
 493       return GL_FALSE;
 494    }
 495
 496    /* Compute which mipmap levels we really want to send to the hardware.
 497     * This depends on the base image size, GL_TEXTURE_MIN_LOD,
 498     * GL_TEXTURE_MAX_LOD, GL_TEXTURE_BASE_LEVEL, and GL_TEXTURE_MAX_LEVEL.
 499     * Yes, this looks overly complicated, but it's all needed.
 500     */
 501    if (texObj->MinFilter == GL_LINEAR || texObj->MinFilter == GL_NEAREST) {
 502       firstLevel = lastLevel = texObj->BaseLevel;
 503    }
 504    else {
 505       firstLevel = texObj->BaseLevel + (GLint)(texObj->MinLod + 0.5);
 506       firstLevel = MAX2(firstLevel, texObj->BaseLevel);
 507       lastLevel = texObj->BaseLevel + (GLint)(texObj->MaxLod + 0.5);
 508       lastLevel = MAX2(lastLevel, texObj->BaseLevel);
 509       lastLevel = MIN2(lastLevel, texObj->BaseLevel + baseImage->image.MaxLog2);
 510       lastLevel = MIN2(lastLevel, texObj->MaxLevel);
 511       lastLevel = MAX2(firstLevel, lastLevel);     /* need at least one level */
 512    }
 513
 514    numLevels = lastLevel - firstLevel + 1;
 515
 516    /* The hardware supports only 10 mipmap levels; ignore higher levels.
 517     */
 518    if ((numLevels > 10) && (ctx->Const.MaxTextureLevels > 10)) {
 519        lastLevel -= numLevels - 10;
 520        numLevels = 10;
 521    }
 522
 523    /* save these values, check if they effect the residency of the
 524     * texture:
 525     */
 526    if (viaObj->firstLevel != firstLevel ||
 527        viaObj->lastLevel != lastLevel) {
 528       viaObj->firstLevel = firstLevel;
 529       viaObj->lastLevel = lastLevel;
 530       viaObj->memType = VIA_MEM_MIXED;
 531    }
 532
 533    if (VIA_DEBUG & DEBUG_TEXTURE & 0)
 534       fprintf(stderr, "%s, current memType: %s\n",
 535               __FUNCTION__,
 536               get_memtype_name(viaObj->memType));
 537
 538
 539    if (viaObj->memType == VIA_MEM_MIXED ||
 540        viaObj->memType == VIA_MEM_SYSTEM) {
 541       if (!viaSwapInTexObject(vmesa, viaObj)) {
 542          if (VIA_DEBUG & DEBUG_TEXTURE)
 543             if (!vmesa->thrashing)
 544                fprintf(stderr, "Thrashing flag set for frame %d\n",
 545                        vmesa->swap_count);
 546          vmesa->thrashing = GL_TRUE;
 547          return GL_FALSE;
 548       }
 549    }
 550
 551    if (viaObj->memType == VIA_MEM_AGP)
 552       viaObj->regTexFM = (HC_SubA_HTXnFM << 24) | HC_HTXnLoc_AGP | texFormat;
 553    else
 554       viaObj->regTexFM = (HC_SubA_HTXnFM << 24) | HC_HTXnLoc_Local | texFormat;
 555
 556
 557    for (i = 0; i < numLevels; i++) {
 558       struct via_texture_image *viaImage =
 559          (struct via_texture_image *)texObj->Image[0][firstLevel + i];
 560
 561       w = viaImage->image.WidthLog2;
 562       h = viaImage->image.HeightLog2;
 563       p = viaImage->pitchLog2;
 564
 565       assert(viaImage->texMem->memType == viaObj->memType);
 566
 567       texBase = viaImage->texMem->texBase;
 568       if (!texBase) {
 569          if (VIA_DEBUG & DEBUG_TEXTURE)
 570             fprintf(stderr, "%s: no texBase[%d]\n", __FUNCTION__, i);
 571          return GL_FALSE;
 572       }
 573
 574       /* Image has to remain resident until the coming fence is retired.
 575        */
 576       move_to_head( &vmesa->tex_image_list[viaImage->texMem->memType],
 577                     viaImage->texMem );
 578       viaImage->texMem->lastUsed = vmesa->lastBreadcrumbWrite;
 579
 580
 581       viaObj->regTexBaseAndPitch[i].baseL =
 582          ((HC_SubA_HTXnL0BasL + i) << 24) | (texBase & 0xFFFFFF);
 583
 584       viaObj->regTexBaseAndPitch[i].pitchLog2 =
 585          ((HC_SubA_HTXnL0Pit + i) << 24) | (p << 20);
 586
 587
 588       /* The base high bytes for each 3 levels are packed
 589        * together into one register:
 590        */
 591       j = i / 3;
 592       k = 3 - (i % 3);
 593       basH |= ((texBase & 0xFF000000) >> (k << 3));
 594       if (k == 1) {
 595          viaObj->regTexBaseH[j] = ((j + HC_SubA_HTXnL012BasH) << 24) | basH;
 596          basH = 0;
 597       }
 598
 599       /* Likewise, sets of 6 log2width and log2height values are
 600        * packed into individual registers:
 601        */
 602       l = i / 6;
 603       m = i % 6;
 604       widthExp |= (((GLuint)w & 0xF) << (m << 2));
 605       heightExp |= (((GLuint)h & 0xF) << (m << 2));
 606       if (m == 5) {
 607          viaObj->regTexWidthLog2[l] =
 608             (l + HC_SubA_HTXnL0_5WE) << 24 | widthExp;
 609          viaObj->regTexHeightLog2[l] =
 610             (l + HC_SubA_HTXnL0_5HE) << 24 | heightExp;
 611          widthExp = 0;
 612          heightExp = 0;
 613       }
 614       if (w) w--;
 615       if (h) h--;
 616       if (p) p--;
 617    }
 618
 619    if (k != 1) {
 620       viaObj->regTexBaseH[j] = ((j + HC_SubA_HTXnL012BasH) << 24) | basH;
 621    }
 622    if (m != 5) {
 623       viaObj->regTexWidthLog2[l] = (l + HC_SubA_HTXnL0_5WE) << 24 | widthExp;
 624       viaObj->regTexHeightLog2[l] = (l + HC_SubA_HTXnL0_5HE) << 24 | heightExp;
 625    }
 626
 627    return GL_TRUE;
 628 }
 629
 630
 631 GLboolean viaUpdateTextureState( GLcontext *ctx )
 632 {
 633    struct gl_texture_unit *texUnit = ctx->Texture.Unit;
 634    GLuint i;
 635
 636    for (i = 0; i < 2; i++) {
 637       if (texUnit[i]._ReallyEnabled == TEXTURE_2D_BIT ||
 638           texUnit[i]._ReallyEnabled == TEXTURE_1D_BIT) {
 639
 640          if (!viaSetTexImages(ctx, texUnit[i]._Current))
 641             return GL_FALSE;
 642       }
 643       else if (texUnit[i]._ReallyEnabled) {
 644          return GL_FALSE;
 645       }
 646    }
 647
 648    return GL_TRUE;
 649 }
 650
 651
 652
 653
 654
 655
 656
 657
 658 static void viaTexImage(GLcontext *ctx,
 659                         GLint dims,
 660                         GLenum target, GLint level,
 661                         GLint internalFormat,
 662                         GLint width, GLint height, GLint border,
 663                         GLenum format, GLenum type, const void *pixels,
 664                         const struct gl_pixelstore_attrib *packing,
 665                         struct gl_texture_object *texObj,
 666                         struct gl_texture_image *texImage)
 667 {
 668    struct via_context *vmesa = VIA_CONTEXT(ctx);
 669    GLint postConvWidth = width;
 670    GLint postConvHeight = height;
 671    GLint texelBytes, sizeInBytes;
 672    struct via_texture_object *viaObj = (struct via_texture_object *)texObj;
 673    struct via_texture_image *viaImage = (struct via_texture_image *)texImage;
 674    int heaps[3], nheaps, i;
 675
 676    if (!is_empty_list(&vmesa->freed_tex_buffers)) {
 677       viaCheckBreadcrumb(vmesa, 0);
 678       via_release_pending_textures(vmesa);
 679    }
 680
 681    if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
 682       _mesa_adjust_image_for_convolution(ctx, dims, &postConvWidth,
 683                                          &postConvHeight);
 684    }
 685
 686    /* choose the texture format */
 687    texImage->TexFormat = viaChooseTexFormat(ctx, internalFormat,
 688                                             format, type);
 689
 690    assert(texImage->TexFormat);
 691
 692    texelBytes = _mesa_get_format_bytes(texImage->TexFormat);
 693
 694    /* Minimum pitch of 32 bytes */
 695    if (postConvWidth * texelBytes < 32) {
 696       postConvWidth = 32 / texelBytes;
 697       texImage->RowStride = postConvWidth;
 698    }
 699
 700    assert(texImage->RowStride == postConvWidth);
 701    viaImage->pitchLog2 = logbase2(postConvWidth * texelBytes);
 702
 703    /* allocate memory */
 704    if (_mesa_is_format_compressed(texImage->TexFormat))
 705       sizeInBytes = _mesa_format_image_size(texImage->TexFormat,
 706                                             texImage->Width,
 707                                             texImage->Height,
 708                                             texImage->Depth);
 709    else
 710       sizeInBytes = postConvWidth * postConvHeight * texelBytes;
 711
 712
 713    /* Attempt to allocate texture memory directly, otherwise use main
 714     * memory and this texture will always be a fallback.   FIXME!
 715     *
 716     * TODO: make room in agp if this fails.
 717     * TODO: use fb ram for textures as well.
 718     */
 719
 720
 721    switch (viaObj->memType) {
 722    case VIA_MEM_UNKNOWN:
 723       heaps[0] = VIA_MEM_AGP;
 724       heaps[1] = VIA_MEM_VIDEO;
 725       heaps[2] = VIA_MEM_SYSTEM;
 726       nheaps = 3;
 727       break;
 728    case VIA_MEM_AGP:
 729    case VIA_MEM_VIDEO:
 730       heaps[0] = viaObj->memType;
 731       heaps[1] = VIA_MEM_SYSTEM;
 732       nheaps = 2;
 733       break;
 734    case VIA_MEM_MIXED:
 735    case VIA_MEM_SYSTEM:
 736    default:
 737       heaps[0] = VIA_MEM_SYSTEM;
 738       nheaps = 1;
 739       break;
 740    }
 741
 742    for (i = 0; i < nheaps && !viaImage->texMem; i++) {
 743       if (VIA_DEBUG & DEBUG_TEXTURE)
 744          fprintf(stderr, "try %s (obj %s)\n", get_memtype_name(heaps[i]),
 745                  get_memtype_name(viaObj->memType));
 746       viaImage->texMem = via_alloc_texture(vmesa, sizeInBytes, heaps[i]);
 747    }
 748
 749    if (!viaImage->texMem) {
 750       _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
 751       return;
 752    }
 753
 754    if (VIA_DEBUG & DEBUG_TEXTURE)
 755       fprintf(stderr, "upload %d bytes to %s\n", sizeInBytes,
 756               get_memtype_name(viaImage->texMem->memType));
 757
 758    viaImage->texMem->image = viaImage;
 759    texImage->Data = viaImage->texMem->bufAddr;
 760
 761    if (viaObj->memType == VIA_MEM_UNKNOWN)
 762       viaObj->memType = viaImage->texMem->memType;
 763    else if (viaObj->memType != viaImage->texMem->memType)
 764       viaObj->memType = VIA_MEM_MIXED;
 765
 766    if (VIA_DEBUG & DEBUG_TEXTURE)
 767       fprintf(stderr, "%s, obj %s, image : %s\n",
 768               __FUNCTION__,
 769               get_memtype_name(viaObj->memType),
 770               get_memtype_name(viaImage->texMem->memType));
 771
 772    vmesa->clearTexCache = 1;
 773
 774    pixels = _mesa_validate_pbo_teximage(ctx, dims, width, height, 1,
 775                                         format, type,
 776                                         pixels, packing, "glTexImage");
 777    if (!pixels) {
 778       /* Note: we check for a NULL image pointer here, _after_ we allocated
 779        * memory for the texture.  That's what the GL spec calls for.
 780        */
 781       return;
 782    }
 783    else {
 784       GLint dstRowStride;
 785       GLboolean success;
 786
 787       if (_mesa_is_format_compressed(texImage->TexFormat)) {
 788          dstRowStride = _mesa_format_row_stride(texImage->TexFormat, width);
 789       }
 790       else {
 791          dstRowStride = postConvWidth * _mesa_get_format_bytes(texImage->TexFormat);
 792       }
 793       success = _mesa_texstore(ctx, dims,
 794                                texImage->_BaseFormat,
 795                                texImage->TexFormat,
 796                                texImage->Data,
 797                                0, 0, 0,  /* dstX/Y/Zoffset */
 798                                dstRowStride,
 799                                texImage->ImageOffsets,
 800                                width, height, 1,
 801                                format, type, pixels, packing);
 802       if (!success) {
 803          _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
 804       }
 805    }
 806
 807    _mesa_unmap_teximage_pbo(ctx, packing);
 808 }
 809
 810 static void viaTexImage2D(GLcontext *ctx,
 811                           GLenum target, GLint level,
 812                           GLint internalFormat,
 813                           GLint width, GLint height, GLint border,
 814                           GLenum format, GLenum type, const void *pixels,
 815                           const struct gl_pixelstore_attrib *packing,
 816                           struct gl_texture_object *texObj,
 817                           struct gl_texture_image *texImage)
 818 {
 819    viaTexImage( ctx, 2, target, level,
 820                 internalFormat, width, height, border,
 821                 format, type, pixels,
 822                 packing, texObj, texImage );
 823 }
 824
 825 static void viaTexSubImage2D(GLcontext *ctx,
 826                              GLenum target,
 827                              GLint level,
 828                              GLint xoffset, GLint yoffset,
 829                              GLsizei width, GLsizei height,
 830                              GLenum format, GLenum type,
 831                              const GLvoid *pixels,
 832                              const struct gl_pixelstore_attrib *packing,
 833                              struct gl_texture_object *texObj,
 834                              struct gl_texture_image *texImage)
 835 {
 836    struct via_context *vmesa = VIA_CONTEXT(ctx);
 837
 838    viaWaitIdle(vmesa, GL_TRUE);
 839    vmesa->clearTexCache = 1;
 840
 841    _mesa_store_texsubimage2d(ctx, target, level, xoffset, yoffset, width,
 842                              height, format, type, pixels, packing, texObj,
 843                              texImage);
 844 }
 845
 846 static void viaTexImage1D(GLcontext *ctx,
 847                           GLenum target, GLint level,
 848                           GLint internalFormat,
 849                           GLint width, GLint border,
 850                           GLenum format, GLenum type, const void *pixels,
 851                           const struct gl_pixelstore_attrib *packing,
 852                           struct gl_texture_object *texObj,
 853                           struct gl_texture_image *texImage)
 854 {
 855    viaTexImage( ctx, 1, target, level,
 856                 internalFormat, width, 1, border,
 857                 format, type, pixels,
 858                 packing, texObj, texImage );
 859 }
 860
 861 static void viaTexSubImage1D(GLcontext *ctx,
 862                              GLenum target,
 863                              GLint level,
 864                              GLint xoffset,
 865                              GLsizei width,
 866                              GLenum format, GLenum type,
 867                              const GLvoid *pixels,
 868                              const struct gl_pixelstore_attrib *packing,
 869                              struct gl_texture_object *texObj,
 870                              struct gl_texture_image *texImage)
 871 {
 872    struct via_context *vmesa = VIA_CONTEXT(ctx);
 873
 874    viaWaitIdle(vmesa, GL_TRUE);
 875    vmesa->clearTexCache = 1;
 876
 877    _mesa_store_texsubimage1d(ctx, target, level, xoffset, width,
 878                              format, type, pixels, packing, texObj,
 879                              texImage);
 880 }
 881
 882
 883
 884 static GLboolean viaIsTextureResident(GLcontext *ctx,
 885                                       struct gl_texture_object *texObj)
 886 {
 887    struct via_texture_object *viaObj =
 888       (struct via_texture_object *)texObj;
 889
 890    return (viaObj->memType == VIA_MEM_AGP ||
 891            viaObj->memType == VIA_MEM_VIDEO);
 892 }
 893
 894
 895
 896 static struct gl_texture_image *viaNewTextureImage( GLcontext *ctx )
 897 {
 898    (void) ctx;
 899    return (struct gl_texture_image *)CALLOC_STRUCT(via_texture_image);
 900 }
 901
 902
 903 static struct gl_texture_object *viaNewTextureObject( GLcontext *ctx,
 904                                                       GLuint name,
 905                                                       GLenum target )
 906 {
 907    struct via_texture_object *obj = CALLOC_STRUCT(via_texture_object);
 908
 909    _mesa_initialize_texture_object(&obj->obj, name, target);
 910    (void) ctx;
 911
 912    obj->memType = VIA_MEM_UNKNOWN;
 913
 914    return &obj->obj;
 915 }
 916
 917
 918 static void viaFreeTextureImageData( GLcontext *ctx,
 919                                      struct gl_texture_image *texImage )
 920 {
 921    struct via_context *vmesa = VIA_CONTEXT(ctx);
 922    struct via_texture_image *image = (struct via_texture_image *)texImage;
 923
 924    if (image->texMem) {
 925       via_free_texture(vmesa, image->texMem);
 926       image->texMem = NULL;
 927    }
 928
 929    texImage->Data = NULL;
 930 }
 931
 932
 933
 934
 935 void viaInitTextureFuncs(struct dd_function_table * functions)
 936 {
 937    functions->ChooseTextureFormat = viaChooseTexFormat;
 938    functions->TexImage1D = viaTexImage1D;
 939    functions->TexImage2D = viaTexImage2D;
 940    functions->TexSubImage1D = viaTexSubImage1D;
 941    functions->TexSubImage2D = viaTexSubImage2D;
 942
 943    functions->NewTextureObject = viaNewTextureObject;
 944    functions->NewTextureImage = viaNewTextureImage;
 945    functions->DeleteTexture = _mesa_delete_texture_object;
 946    functions->FreeTexImageData = viaFreeTextureImageData;
 947
 948 #if 0 && defined( USE_SSE_ASM )
 949    /*
 950     * XXX this code is disabled for now because the via_sse_memcpy()
 951     * routine causes segfaults with flightgear.
 952     * See Mesa3d-dev mail list messages from 7/15/2005 for details.
 953     * Note that this function is currently disabled in via_tris.c too.
 954     */
 955    if (getenv("VIA_NO_SSE"))
 956       functions->TextureMemCpy = _mesa_memcpy;
 957    else
 958       functions->TextureMemCpy = via_sse_memcpy;
 959 #else
 960    functions->TextureMemCpy = _mesa_memcpy;
 961 #endif
 962
 963    functions->UpdateTexturePalette = 0;
 964    functions->IsTextureResident = viaIsTextureResident;
 965 }
 966
 967