src/mesa/drivers/dri/i915/i915_texstate.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "main/mtypes.h"
  29 #include "main/enums.h"
  30 #include "main/macros.h"
  31 #include "main/colormac.h"
  32
  33 #include "intel_mipmap_tree.h"
  34 #include "intel_tex.h"
  35
  36 #include "i915_context.h"
  37 #include "i915_reg.h"
  38
  39
  40 static GLuint
  41 translate_texture_format(gl_format mesa_format, GLuint internal_format,
  42                          GLenum DepthMode)
  43 {
  44    switch (mesa_format) {
  45    case MESA_FORMAT_L8:
  46       return MAPSURF_8BIT | MT_8BIT_L8;
  47    case MESA_FORMAT_I8:
  48       return MAPSURF_8BIT | MT_8BIT_I8;
  49    case MESA_FORMAT_A8:
  50       return MAPSURF_8BIT | MT_8BIT_A8;
  51    case MESA_FORMAT_AL88:
  52       return MAPSURF_16BIT | MT_16BIT_AY88;
  53    case MESA_FORMAT_RGB565:
  54       return MAPSURF_16BIT | MT_16BIT_RGB565;
  55    case MESA_FORMAT_ARGB1555:
  56       return MAPSURF_16BIT | MT_16BIT_ARGB1555;
  57    case MESA_FORMAT_ARGB4444:
  58       return MAPSURF_16BIT | MT_16BIT_ARGB4444;
  59    case MESA_FORMAT_ARGB8888:
  60       return MAPSURF_32BIT | MT_32BIT_ARGB8888;
  61    case MESA_FORMAT_XRGB8888:
  62       return MAPSURF_32BIT | MT_32BIT_XRGB8888;
  63    case MESA_FORMAT_YCBCR_REV:
  64       return (MAPSURF_422 | MT_422_YCRCB_NORMAL);
  65    case MESA_FORMAT_YCBCR:
  66       return (MAPSURF_422 | MT_422_YCRCB_SWAPY);
  67    case MESA_FORMAT_RGB_FXT1:
  68    case MESA_FORMAT_RGBA_FXT1:
  69       return (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
  70    case MESA_FORMAT_Z16:
  71       if (DepthMode == GL_ALPHA)
  72           return (MAPSURF_16BIT | MT_16BIT_A16);
  73       else if (DepthMode == GL_INTENSITY)
  74           return (MAPSURF_16BIT | MT_16BIT_I16);
  75       else
  76           return (MAPSURF_16BIT | MT_16BIT_L16);
  77    case MESA_FORMAT_RGBA_DXT1:
  78    case MESA_FORMAT_RGB_DXT1:
  79       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
  80    case MESA_FORMAT_RGBA_DXT3:
  81       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
  82    case MESA_FORMAT_RGBA_DXT5:
  83       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
  84    case MESA_FORMAT_S8_Z24:
  85       if (DepthMode == GL_ALPHA)
  86          return (MAPSURF_32BIT | MT_32BIT_x8A24);
  87       else if (DepthMode == GL_INTENSITY)
  88          return (MAPSURF_32BIT | MT_32BIT_x8I24);
  89       else
  90          return (MAPSURF_32BIT | MT_32BIT_x8L24);
  91    default:
  92       fprintf(stderr, "%s: bad image format %x\n", __FUNCTION__, mesa_format);
  93       abort();
  94       return 0;
  95    }
  96 }
  97
  98
  99
 100
 101 /* The i915 (and related graphics cores) do not support GL_CLAMP.  The
 102  * Intel drivers for "other operating systems" implement GL_CLAMP as
 103  * GL_CLAMP_TO_EDGE, so the same is done here.
 104  */
 105 static GLuint
 106 translate_wrap_mode(GLenum wrap)
 107 {
 108    switch (wrap) {
 109    case GL_REPEAT:
 110       return TEXCOORDMODE_WRAP;
 111    case GL_CLAMP:
 112       return TEXCOORDMODE_CLAMP_EDGE;   /* not quite correct */
 113    case GL_CLAMP_TO_EDGE:
 114       return TEXCOORDMODE_CLAMP_EDGE;
 115    case GL_CLAMP_TO_BORDER:
 116       return TEXCOORDMODE_CLAMP_BORDER;
 117    case GL_MIRRORED_REPEAT:
 118       return TEXCOORDMODE_MIRROR;
 119    default:
 120       return TEXCOORDMODE_WRAP;
 121    }
 122 }
 123
 124
 125
 126 /* Recalculate all state from scratch.  Perhaps not the most
 127  * efficient, but this has gotten complex enough that we need
 128  * something which is understandable and reliable.
 129  */
 130 static GLboolean
 131 i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
 132 {
 133    GLcontext *ctx = &intel->ctx;
 134    struct i915_context *i915 = i915_context(ctx);
 135    struct gl_texture_unit *tUnit = &ctx->Texture.Unit[unit];
 136    struct gl_texture_object *tObj = tUnit->_Current;
 137    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 138    struct gl_texture_image *firstImage;
 139    GLuint *state = i915->state.Tex[unit], format, pitch;
 140    GLint lodbias, aniso = 0;
 141    GLubyte border[4];
 142
 143    memset(state, 0, sizeof(state));
 144
 145    /*We need to refcount these. */
 146
 147    if (i915->state.tex_buffer[unit] != NULL) {
 148        dri_bo_unreference(i915->state.tex_buffer[unit]);
 149        i915->state.tex_buffer[unit] = NULL;
 150    }
 151
 152    if (!intelObj->imageOverride && !intel_finalize_mipmap_tree(intel, unit))
 153       return GL_FALSE;
 154
 155    /* Get first image here, since intelObj->firstLevel will get set in
 156     * the intel_finalize_mipmap_tree() call above.
 157     */
 158    firstImage = tObj->Image[0][intelObj->firstLevel];
 159
 160    if (intelObj->imageOverride) {
 161       i915->state.tex_buffer[unit] = NULL;
 162       i915->state.tex_offset[unit] = intelObj->textureOffset;
 163
 164       switch (intelObj->depthOverride) {
 165       case 32:
 166          format = MAPSURF_32BIT | MT_32BIT_ARGB8888;
 167          break;
 168       case 24:
 169       default:
 170          format = MAPSURF_32BIT | MT_32BIT_XRGB8888;
 171          break;
 172       case 16:
 173          format = MAPSURF_16BIT | MT_16BIT_RGB565;
 174          break;
 175       }
 176
 177       pitch = intelObj->pitchOverride;
 178    } else {
 179       GLuint dst_x, dst_y;
 180
 181       intel_miptree_get_image_offset(intelObj->mt, intelObj->firstLevel, 0, 0,
 182                                      &dst_x, &dst_y);
 183
 184       dri_bo_reference(intelObj->mt->region->buffer);
 185       i915->state.tex_buffer[unit] = intelObj->mt->region->buffer;
 186       /* XXX: This calculation is probably broken for tiled images with
 187        * a non-page-aligned offset.
 188        */
 189       i915->state.tex_offset[unit] = (dst_x + dst_y * intelObj->mt->pitch) *
 190          intelObj->mt->cpp;
 191
 192       format = translate_texture_format(firstImage->TexFormat,
 193                                         firstImage->InternalFormat,
 194                                         tObj->DepthMode);
 195       pitch = intelObj->mt->pitch * intelObj->mt->cpp;
 196    }
 197
 198    state[I915_TEXREG_MS3] =
 199       (((firstImage->Height - 1) << MS3_HEIGHT_SHIFT) |
 200        ((firstImage->Width - 1) << MS3_WIDTH_SHIFT) | format);
 201
 202    if (intelObj->mt->region->tiling != I915_TILING_NONE) {
 203       state[I915_TEXREG_MS3] |= MS3_TILED_SURFACE;
 204       if (intelObj->mt->region->tiling == I915_TILING_Y)
 205          state[I915_TEXREG_MS3] |= MS3_TILE_WALK;
 206    }
 207
 208    state[I915_TEXREG_MS4] =
 209       ((((pitch / 4) - 1) << MS4_PITCH_SHIFT) |
 210        MS4_CUBE_FACE_ENA_MASK |
 211        (U_FIXED(CLAMP(tObj->MaxLod, 0.0, 11.0), 2) << MS4_MAX_LOD_SHIFT) |
 212        ((firstImage->Depth - 1) << MS4_VOLUME_DEPTH_SHIFT));
 213
 214
 215    {
 216       GLuint minFilt, mipFilt, magFilt;
 217
 218       switch (tObj->MinFilter) {
 219       case GL_NEAREST:
 220          minFilt = FILTER_NEAREST;
 221          mipFilt = MIPFILTER_NONE;
 222          break;
 223       case GL_LINEAR:
 224          minFilt = FILTER_LINEAR;
 225          mipFilt = MIPFILTER_NONE;
 226          break;
 227       case GL_NEAREST_MIPMAP_NEAREST:
 228          minFilt = FILTER_NEAREST;
 229          mipFilt = MIPFILTER_NEAREST;
 230          break;
 231       case GL_LINEAR_MIPMAP_NEAREST:
 232          minFilt = FILTER_LINEAR;
 233          mipFilt = MIPFILTER_NEAREST;
 234          break;
 235       case GL_NEAREST_MIPMAP_LINEAR:
 236          minFilt = FILTER_NEAREST;
 237          mipFilt = MIPFILTER_LINEAR;
 238          break;
 239       case GL_LINEAR_MIPMAP_LINEAR:
 240          minFilt = FILTER_LINEAR;
 241          mipFilt = MIPFILTER_LINEAR;
 242          break;
 243       default:
 244          return GL_FALSE;
 245       }
 246
 247       if (tObj->MaxAnisotropy > 1.0) {
 248          minFilt = FILTER_ANISOTROPIC;
 249          magFilt = FILTER_ANISOTROPIC;
 250          if (tObj->MaxAnisotropy > 2.0)
 251             aniso = SS2_MAX_ANISO_4;
 252          else
 253             aniso = SS2_MAX_ANISO_2;
 254       }
 255       else {
 256          switch (tObj->MagFilter) {
 257          case GL_NEAREST:
 258             magFilt = FILTER_NEAREST;
 259             break;
 260          case GL_LINEAR:
 261             magFilt = FILTER_LINEAR;
 262             break;
 263          default:
 264             return GL_FALSE;
 265          }
 266       }
 267
 268       lodbias = (int) ((tUnit->LodBias + tObj->LodBias) * 16.0);
 269       if (lodbias < -256)
 270           lodbias = -256;
 271       if (lodbias > 255)
 272           lodbias = 255;
 273       state[I915_TEXREG_SS2] = ((lodbias << SS2_LOD_BIAS_SHIFT) &
 274                                 SS2_LOD_BIAS_MASK);
 275
 276       /* YUV conversion:
 277        */
 278       if (firstImage->TexFormat == MESA_FORMAT_YCBCR ||
 279           firstImage->TexFormat == MESA_FORMAT_YCBCR_REV)
 280          state[I915_TEXREG_SS2] |= SS2_COLORSPACE_CONVERSION;
 281
 282       /* Shadow:
 283        */
 284       if (tObj->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB &&
 285           tObj->Target != GL_TEXTURE_3D) {
 286          if (tObj->Target == GL_TEXTURE_1D)
 287             return GL_FALSE;
 288
 289          state[I915_TEXREG_SS2] |=
 290             (SS2_SHADOW_ENABLE |
 291              intel_translate_shadow_compare_func(tObj->CompareFunc));
 292
 293          minFilt = FILTER_4X4_FLAT;
 294          magFilt = FILTER_4X4_FLAT;
 295       }
 296
 297       state[I915_TEXREG_SS2] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
 298                                  (mipFilt << SS2_MIP_FILTER_SHIFT) |
 299                                  (magFilt << SS2_MAG_FILTER_SHIFT) |
 300                                  aniso);
 301    }
 302
 303    {
 304       GLenum ws = tObj->WrapS;
 305       GLenum wt = tObj->WrapT;
 306       GLenum wr = tObj->WrapR;
 307
 308       /* We program 1D textures as 2D textures, so the 2D texcoord could
 309        * result in sampling border values if we don't set the T wrap to
 310        * repeat.
 311        */
 312       if (tObj->Target == GL_TEXTURE_1D)
 313          wt = GL_REPEAT;
 314
 315       /* 3D textures don't seem to respect the border color.
 316        * Fallback if there's ever a danger that they might refer to
 317        * it.
 318        *
 319        * Effectively this means fallback on 3D clamp or
 320        * clamp_to_border.
 321        */
 322       if (tObj->Target == GL_TEXTURE_3D &&
 323           (tObj->MinFilter != GL_NEAREST ||
 324            tObj->MagFilter != GL_NEAREST) &&
 325           (ws == GL_CLAMP ||
 326            wt == GL_CLAMP ||
 327            wr == GL_CLAMP ||
 328            ws == GL_CLAMP_TO_BORDER ||
 329            wt == GL_CLAMP_TO_BORDER || wr == GL_CLAMP_TO_BORDER))
 330          return GL_FALSE;
 331
 332       /* Only support TEXCOORDMODE_CLAMP_EDGE and TEXCOORDMODE_CUBE (not
 333        * used) when using cube map texture coordinates
 334        */
 335       if (tObj->Target == GL_TEXTURE_CUBE_MAP_ARB &&
 336           (((ws != GL_CLAMP) && (ws != GL_CLAMP_TO_EDGE)) ||
 337            ((wt != GL_CLAMP) && (wt != GL_CLAMP_TO_EDGE))))
 338           return GL_FALSE;
 339
 340       state[I915_TEXREG_SS3] = ss3;     /* SS3_NORMALIZED_COORDS */
 341
 342       state[I915_TEXREG_SS3] |=
 343          ((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
 344           (translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
 345           (translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT));
 346
 347       state[I915_TEXREG_SS3] |= (unit << SS3_TEXTUREMAP_INDEX_SHIFT);
 348       state[I915_TEXREG_SS3] |= (U_FIXED(CLAMP(tObj->MinLod, 0.0, 11.0), 4) <<
 349                                  SS3_MIN_LOD_SHIFT);
 350
 351    }
 352
 353    /* convert border color from float to ubyte */
 354    CLAMPED_FLOAT_TO_UBYTE(border[0], tObj->BorderColor[0]);
 355    CLAMPED_FLOAT_TO_UBYTE(border[1], tObj->BorderColor[1]);
 356    CLAMPED_FLOAT_TO_UBYTE(border[2], tObj->BorderColor[2]);
 357    CLAMPED_FLOAT_TO_UBYTE(border[3], tObj->BorderColor[3]);
 358
 359    if (firstImage->_BaseFormat == GL_DEPTH_COMPONENT) {
 360       /* GL specs that border color for depth textures is taken from the
 361        * R channel, while the hardware uses A.  Spam R into all the channels
 362        * for safety.
 363        */
 364       state[I915_TEXREG_SS4] = PACK_COLOR_8888(border[0],
 365                                                border[0],
 366                                                border[0],
 367                                                border[0]);
 368    } else {
 369       state[I915_TEXREG_SS4] = PACK_COLOR_8888(border[3],
 370                                                border[0],
 371                                                border[1],
 372                                                border[2]);
 373    }
 374
 375
 376    I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), GL_TRUE);
 377    /* memcmp was already disabled, but definitely won't work as the
 378     * region might now change and that wouldn't be detected:
 379     */
 380    I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 381
 382
 383 #if 0
 384    DBG(TEXTURE, "state[I915_TEXREG_SS2] = 0x%x\n", state[I915_TEXREG_SS2]);
 385    DBG(TEXTURE, "state[I915_TEXREG_SS3] = 0x%x\n", state[I915_TEXREG_SS3]);
 386    DBG(TEXTURE, "state[I915_TEXREG_SS4] = 0x%x\n", state[I915_TEXREG_SS4]);
 387    DBG(TEXTURE, "state[I915_TEXREG_MS2] = 0x%x\n", state[I915_TEXREG_MS2]);
 388    DBG(TEXTURE, "state[I915_TEXREG_MS3] = 0x%x\n", state[I915_TEXREG_MS3]);
 389    DBG(TEXTURE, "state[I915_TEXREG_MS4] = 0x%x\n", state[I915_TEXREG_MS4]);
 390 #endif
 391
 392    return GL_TRUE;
 393 }
 394
 395
 396
 397
 398 void
 399 i915UpdateTextureState(struct intel_context *intel)
 400 {
 401    GLboolean ok = GL_TRUE;
 402    GLuint i;
 403
 404    for (i = 0; i < I915_TEX_UNITS && ok; i++) {
 405       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 406       case TEXTURE_1D_BIT:
 407       case TEXTURE_2D_BIT:
 408       case TEXTURE_CUBE_BIT:
 409       case TEXTURE_3D_BIT:
 410          ok = i915_update_tex_unit(intel, i, SS3_NORMALIZED_COORDS);
 411          break;
 412       case TEXTURE_RECT_BIT:
 413          ok = i915_update_tex_unit(intel, i, 0);
 414          break;
 415       case 0:{
 416             struct i915_context *i915 = i915_context(&intel->ctx);
 417             if (i915->state.active & I915_UPLOAD_TEX(i))
 418                I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(i), GL_FALSE);
 419
 420             if (i915->state.tex_buffer[i] != NULL) {
 421                dri_bo_unreference(i915->state.tex_buffer[i]);
 422                i915->state.tex_buffer[i] = NULL;
 423             }
 424
 425             break;
 426          }
 427       default:
 428          ok = GL_FALSE;
 429          break;
 430       }
 431    }
 432
 433    FALLBACK(intel, I915_FALLBACK_TEXTURE, !ok);
 434 }