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       if (internal_format == GL_RGB)
  61          return MAPSURF_32BIT | MT_32BIT_XRGB8888;
  62       else
  63          return MAPSURF_32BIT | MT_32BIT_ARGB8888;
  64    case MESA_FORMAT_XRGB8888:
  65       return MAPSURF_32BIT | MT_32BIT_XRGB8888;
  66    case MESA_FORMAT_YCBCR_REV:
  67       return (MAPSURF_422 | MT_422_YCRCB_NORMAL);
  68    case MESA_FORMAT_YCBCR:
  69       return (MAPSURF_422 | MT_422_YCRCB_SWAPY);
  70    case MESA_FORMAT_RGB_FXT1:
  71    case MESA_FORMAT_RGBA_FXT1:
  72       return (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
  73    case MESA_FORMAT_Z16:
  74       if (DepthMode == GL_ALPHA)
  75           return (MAPSURF_16BIT | MT_16BIT_A16);
  76       else if (DepthMode == GL_INTENSITY)
  77           return (MAPSURF_16BIT | MT_16BIT_I16);
  78       else
  79           return (MAPSURF_16BIT | MT_16BIT_L16);
  80    case MESA_FORMAT_RGBA_DXT1:
  81    case MESA_FORMAT_RGB_DXT1:
  82       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
  83    case MESA_FORMAT_RGBA_DXT3:
  84       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
  85    case MESA_FORMAT_RGBA_DXT5:
  86       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
  87    case MESA_FORMAT_S8_Z24:
  88       if (DepthMode == GL_ALPHA)
  89          return (MAPSURF_32BIT | MT_32BIT_x8A24);
  90       else if (DepthMode == GL_INTENSITY)
  91          return (MAPSURF_32BIT | MT_32BIT_x8I24);
  92       else
  93          return (MAPSURF_32BIT | MT_32BIT_x8L24);
  94    default:
  95       fprintf(stderr, "%s: bad image format %x\n", __FUNCTION__, mesa_format);
  96       abort();
  97       return 0;
  98    }
  99 }
 100
 101
 102
 103
 104 /* The i915 (and related graphics cores) do not support GL_CLAMP.  The
 105  * Intel drivers for "other operating systems" implement GL_CLAMP as
 106  * GL_CLAMP_TO_EDGE, so the same is done here.
 107  */
 108 static GLuint
 109 translate_wrap_mode(GLenum wrap)
 110 {
 111    switch (wrap) {
 112    case GL_REPEAT:
 113       return TEXCOORDMODE_WRAP;
 114    case GL_CLAMP:
 115       return TEXCOORDMODE_CLAMP_EDGE;   /* not quite correct */
 116    case GL_CLAMP_TO_EDGE:
 117       return TEXCOORDMODE_CLAMP_EDGE;
 118    case GL_CLAMP_TO_BORDER:
 119       return TEXCOORDMODE_CLAMP_BORDER;
 120    case GL_MIRRORED_REPEAT:
 121       return TEXCOORDMODE_MIRROR;
 122    default:
 123       return TEXCOORDMODE_WRAP;
 124    }
 125 }
 126
 127
 128
 129 /* Recalculate all state from scratch.  Perhaps not the most
 130  * efficient, but this has gotten complex enough that we need
 131  * something which is understandable and reliable.
 132  */
 133 static GLboolean
 134 i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
 135 {
 136    GLcontext *ctx = &intel->ctx;
 137    struct i915_context *i915 = i915_context(ctx);
 138    struct gl_texture_unit *tUnit = &ctx->Texture.Unit[unit];
 139    struct gl_texture_object *tObj = tUnit->_Current;
 140    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 141    struct gl_texture_image *firstImage;
 142    GLuint *state = i915->state.Tex[unit], format, pitch;
 143    GLint lodbias, aniso = 0;
 144    GLubyte border[4];
 145
 146    memset(state, 0, sizeof(state));
 147
 148    /*We need to refcount these. */
 149
 150    if (i915->state.tex_buffer[unit] != NULL) {
 151        dri_bo_unreference(i915->state.tex_buffer[unit]);
 152        i915->state.tex_buffer[unit] = NULL;
 153    }
 154
 155    if (!intelObj->imageOverride && !intel_finalize_mipmap_tree(intel, unit))
 156       return GL_FALSE;
 157
 158    /* Get first image here, since intelObj->firstLevel will get set in
 159     * the intel_finalize_mipmap_tree() call above.
 160     */
 161    firstImage = tObj->Image[0][intelObj->firstLevel];
 162
 163    if (intelObj->imageOverride) {
 164       i915->state.tex_buffer[unit] = NULL;
 165       i915->state.tex_offset[unit] = intelObj->textureOffset;
 166
 167       switch (intelObj->depthOverride) {
 168       case 32:
 169          format = MAPSURF_32BIT | MT_32BIT_ARGB8888;
 170          break;
 171       case 24:
 172       default:
 173          format = MAPSURF_32BIT | MT_32BIT_XRGB8888;
 174          break;
 175       case 16:
 176          format = MAPSURF_16BIT | MT_16BIT_RGB565;
 177          break;
 178       }
 179
 180       pitch = intelObj->pitchOverride;
 181    } else {
 182       GLuint dst_x, dst_y;
 183
 184       intel_miptree_get_image_offset(intelObj->mt, intelObj->firstLevel, 0, 0,
 185                                      &dst_x, &dst_y);
 186
 187       dri_bo_reference(intelObj->mt->region->buffer);
 188       i915->state.tex_buffer[unit] = intelObj->mt->region->buffer;
 189       /* XXX: This calculation is probably broken for tiled images with
 190        * a non-page-aligned offset.
 191        */
 192       i915->state.tex_offset[unit] = (dst_x + dst_y * intelObj->mt->pitch) *
 193          intelObj->mt->cpp;
 194
 195       format = translate_texture_format(firstImage->TexFormat,
 196                                         firstImage->InternalFormat,
 197                                         tObj->DepthMode);
 198       pitch = intelObj->mt->pitch * intelObj->mt->cpp;
 199    }
 200
 201    state[I915_TEXREG_MS3] =
 202       (((firstImage->Height - 1) << MS3_HEIGHT_SHIFT) |
 203        ((firstImage->Width - 1) << MS3_WIDTH_SHIFT) | format);
 204
 205    if (intelObj->mt->region->tiling != I915_TILING_NONE) {
 206       state[I915_TEXREG_MS3] |= MS3_TILED_SURFACE;
 207       if (intelObj->mt->region->tiling == I915_TILING_Y)
 208          state[I915_TEXREG_MS3] |= MS3_TILE_WALK;
 209    }
 210
 211    state[I915_TEXREG_MS4] =
 212       ((((pitch / 4) - 1) << MS4_PITCH_SHIFT) |
 213        MS4_CUBE_FACE_ENA_MASK |
 214        (U_FIXED(CLAMP(tObj->MaxLod, 0.0, 11.0), 2) << MS4_MAX_LOD_SHIFT) |
 215        ((firstImage->Depth - 1) << MS4_VOLUME_DEPTH_SHIFT));
 216
 217
 218    {
 219       GLuint minFilt, mipFilt, magFilt;
 220
 221       switch (tObj->MinFilter) {
 222       case GL_NEAREST:
 223          minFilt = FILTER_NEAREST;
 224          mipFilt = MIPFILTER_NONE;
 225          break;
 226       case GL_LINEAR:
 227          minFilt = FILTER_LINEAR;
 228          mipFilt = MIPFILTER_NONE;
 229          break;
 230       case GL_NEAREST_MIPMAP_NEAREST:
 231          minFilt = FILTER_NEAREST;
 232          mipFilt = MIPFILTER_NEAREST;
 233          break;
 234       case GL_LINEAR_MIPMAP_NEAREST:
 235          minFilt = FILTER_LINEAR;
 236          mipFilt = MIPFILTER_NEAREST;
 237          break;
 238       case GL_NEAREST_MIPMAP_LINEAR:
 239          minFilt = FILTER_NEAREST;
 240          mipFilt = MIPFILTER_LINEAR;
 241          break;
 242       case GL_LINEAR_MIPMAP_LINEAR:
 243          minFilt = FILTER_LINEAR;
 244          mipFilt = MIPFILTER_LINEAR;
 245          break;
 246       default:
 247          return GL_FALSE;
 248       }
 249
 250       if (tObj->MaxAnisotropy > 1.0) {
 251          minFilt = FILTER_ANISOTROPIC;
 252          magFilt = FILTER_ANISOTROPIC;
 253          if (tObj->MaxAnisotropy > 2.0)
 254             aniso = SS2_MAX_ANISO_4;
 255          else
 256             aniso = SS2_MAX_ANISO_2;
 257       }
 258       else {
 259          switch (tObj->MagFilter) {
 260          case GL_NEAREST:
 261             magFilt = FILTER_NEAREST;
 262             break;
 263          case GL_LINEAR:
 264             magFilt = FILTER_LINEAR;
 265             break;
 266          default:
 267             return GL_FALSE;
 268          }
 269       }
 270
 271       lodbias = (int) ((tUnit->LodBias + tObj->LodBias) * 16.0);
 272       if (lodbias < -256)
 273           lodbias = -256;
 274       if (lodbias > 255)
 275           lodbias = 255;
 276       state[I915_TEXREG_SS2] = ((lodbias << SS2_LOD_BIAS_SHIFT) &
 277                                 SS2_LOD_BIAS_MASK);
 278
 279       /* YUV conversion:
 280        */
 281       if (firstImage->TexFormat == MESA_FORMAT_YCBCR ||
 282           firstImage->TexFormat == MESA_FORMAT_YCBCR_REV)
 283          state[I915_TEXREG_SS2] |= SS2_COLORSPACE_CONVERSION;
 284
 285       /* Shadow:
 286        */
 287       if (tObj->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB &&
 288           tObj->Target != GL_TEXTURE_3D) {
 289          if (tObj->Target == GL_TEXTURE_1D)
 290             return GL_FALSE;
 291
 292          state[I915_TEXREG_SS2] |=
 293             (SS2_SHADOW_ENABLE |
 294              intel_translate_shadow_compare_func(tObj->CompareFunc));
 295
 296          minFilt = FILTER_4X4_FLAT;
 297          magFilt = FILTER_4X4_FLAT;
 298       }
 299
 300       state[I915_TEXREG_SS2] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
 301                                  (mipFilt << SS2_MIP_FILTER_SHIFT) |
 302                                  (magFilt << SS2_MAG_FILTER_SHIFT) |
 303                                  aniso);
 304    }
 305
 306    {
 307       GLenum ws = tObj->WrapS;
 308       GLenum wt = tObj->WrapT;
 309       GLenum wr = tObj->WrapR;
 310
 311       /* We program 1D textures as 2D textures, so the 2D texcoord could
 312        * result in sampling border values if we don't set the T wrap to
 313        * repeat.
 314        */
 315       if (tObj->Target == GL_TEXTURE_1D)
 316          wt = GL_REPEAT;
 317
 318       /* 3D textures don't seem to respect the border color.
 319        * Fallback if there's ever a danger that they might refer to
 320        * it.
 321        *
 322        * Effectively this means fallback on 3D clamp or
 323        * clamp_to_border.
 324        */
 325       if (tObj->Target == GL_TEXTURE_3D &&
 326           (tObj->MinFilter != GL_NEAREST ||
 327            tObj->MagFilter != GL_NEAREST) &&
 328           (ws == GL_CLAMP ||
 329            wt == GL_CLAMP ||
 330            wr == GL_CLAMP ||
 331            ws == GL_CLAMP_TO_BORDER ||
 332            wt == GL_CLAMP_TO_BORDER || wr == GL_CLAMP_TO_BORDER))
 333          return GL_FALSE;
 334
 335       /* Only support TEXCOORDMODE_CLAMP_EDGE and TEXCOORDMODE_CUBE (not
 336        * used) when using cube map texture coordinates
 337        */
 338       if (tObj->Target == GL_TEXTURE_CUBE_MAP_ARB &&
 339           (((ws != GL_CLAMP) && (ws != GL_CLAMP_TO_EDGE)) ||
 340            ((wt != GL_CLAMP) && (wt != GL_CLAMP_TO_EDGE))))
 341           return GL_FALSE;
 342
 343       state[I915_TEXREG_SS3] = ss3;     /* SS3_NORMALIZED_COORDS */
 344
 345       state[I915_TEXREG_SS3] |=
 346          ((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
 347           (translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
 348           (translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT));
 349
 350       state[I915_TEXREG_SS3] |= (unit << SS3_TEXTUREMAP_INDEX_SHIFT);
 351       state[I915_TEXREG_SS3] |= (U_FIXED(CLAMP(tObj->MinLod, 0.0, 11.0), 4) <<
 352                                  SS3_MIN_LOD_SHIFT);
 353
 354    }
 355
 356    /* convert border color from float to ubyte */
 357    CLAMPED_FLOAT_TO_UBYTE(border[0], tObj->BorderColor[0]);
 358    CLAMPED_FLOAT_TO_UBYTE(border[1], tObj->BorderColor[1]);
 359    CLAMPED_FLOAT_TO_UBYTE(border[2], tObj->BorderColor[2]);
 360    CLAMPED_FLOAT_TO_UBYTE(border[3], tObj->BorderColor[3]);
 361
 362    if (firstImage->_BaseFormat == GL_DEPTH_COMPONENT) {
 363       /* GL specs that border color for depth textures is taken from the
 364        * R channel, while the hardware uses A.  Spam R into all the channels
 365        * for safety.
 366        */
 367       state[I915_TEXREG_SS4] = PACK_COLOR_8888(border[0],
 368                                                border[0],
 369                                                border[0],
 370                                                border[0]);
 371    } else {
 372       state[I915_TEXREG_SS4] = PACK_COLOR_8888(border[3],
 373                                                border[0],
 374                                                border[1],
 375                                                border[2]);
 376    }
 377
 378
 379    I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), GL_TRUE);
 380    /* memcmp was already disabled, but definitely won't work as the
 381     * region might now change and that wouldn't be detected:
 382     */
 383    I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 384
 385
 386 #if 0
 387    DBG(TEXTURE, "state[I915_TEXREG_SS2] = 0x%x\n", state[I915_TEXREG_SS2]);
 388    DBG(TEXTURE, "state[I915_TEXREG_SS3] = 0x%x\n", state[I915_TEXREG_SS3]);
 389    DBG(TEXTURE, "state[I915_TEXREG_SS4] = 0x%x\n", state[I915_TEXREG_SS4]);
 390    DBG(TEXTURE, "state[I915_TEXREG_MS2] = 0x%x\n", state[I915_TEXREG_MS2]);
 391    DBG(TEXTURE, "state[I915_TEXREG_MS3] = 0x%x\n", state[I915_TEXREG_MS3]);
 392    DBG(TEXTURE, "state[I915_TEXREG_MS4] = 0x%x\n", state[I915_TEXREG_MS4]);
 393 #endif
 394
 395    return GL_TRUE;
 396 }
 397
 398
 399
 400
 401 void
 402 i915UpdateTextureState(struct intel_context *intel)
 403 {
 404    GLboolean ok = GL_TRUE;
 405    GLuint i;
 406
 407    for (i = 0; i < I915_TEX_UNITS && ok; i++) {
 408       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 409       case TEXTURE_1D_BIT:
 410       case TEXTURE_2D_BIT:
 411       case TEXTURE_CUBE_BIT:
 412       case TEXTURE_3D_BIT:
 413          ok = i915_update_tex_unit(intel, i, SS3_NORMALIZED_COORDS);
 414          break;
 415       case TEXTURE_RECT_BIT:
 416          ok = i915_update_tex_unit(intel, i, 0);
 417          break;
 418       case 0:{
 419             struct i915_context *i915 = i915_context(&intel->ctx);
 420             if (i915->state.active & I915_UPLOAD_TEX(i))
 421                I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(i), GL_FALSE);
 422
 423             if (i915->state.tex_buffer[i] != NULL) {
 424                dri_bo_unreference(i915->state.tex_buffer[i]);
 425                i915->state.tex_buffer[i] = NULL;
 426             }
 427
 428             break;
 429          }
 430       default:
 431          ok = GL_FALSE;
 432          break;
 433       }
 434    }
 435
 436    FALLBACK(intel, I915_FALLBACK_TEXTURE, !ok);
 437 }