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
  31 #include "intel_mipmap_tree.h"
  32 #include "intel_tex.h"
  33
  34 #include "i915_context.h"
  35 #include "i915_reg.h"
  36
  37
  38 static GLuint
  39 translate_texture_format(gl_format mesa_format, GLuint internal_format,
  40                          GLenum DepthMode)
  41 {
  42    switch (mesa_format) {
  43    case MESA_FORMAT_L8:
  44       return MAPSURF_8BIT | MT_8BIT_L8;
  45    case MESA_FORMAT_I8:
  46       return MAPSURF_8BIT | MT_8BIT_I8;
  47    case MESA_FORMAT_A8:
  48       return MAPSURF_8BIT | MT_8BIT_A8;
  49    case MESA_FORMAT_AL88:
  50       return MAPSURF_16BIT | MT_16BIT_AY88;
  51    case MESA_FORMAT_RGB565:
  52       return MAPSURF_16BIT | MT_16BIT_RGB565;
  53    case MESA_FORMAT_ARGB1555:
  54       return MAPSURF_16BIT | MT_16BIT_ARGB1555;
  55    case MESA_FORMAT_ARGB4444:
  56       return MAPSURF_16BIT | MT_16BIT_ARGB4444;
  57    case MESA_FORMAT_ARGB8888:
  58       if (internal_format == GL_RGB)
  59          return MAPSURF_32BIT | MT_32BIT_XRGB8888;
  60       else
  61          return MAPSURF_32BIT | MT_32BIT_ARGB8888;
  62    case MESA_FORMAT_YCBCR_REV:
  63       return (MAPSURF_422 | MT_422_YCRCB_NORMAL);
  64    case MESA_FORMAT_YCBCR:
  65       return (MAPSURF_422 | MT_422_YCRCB_SWAPY);
  66    case MESA_FORMAT_RGB_FXT1:
  67    case MESA_FORMAT_RGBA_FXT1:
  68       return (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
  69    case MESA_FORMAT_Z16:
  70       if (DepthMode == GL_ALPHA)
  71           return (MAPSURF_16BIT | MT_16BIT_A16);
  72       else if (DepthMode == GL_INTENSITY)
  73           return (MAPSURF_16BIT | MT_16BIT_I16);
  74       else
  75           return (MAPSURF_16BIT | MT_16BIT_L16);
  76    case MESA_FORMAT_RGBA_DXT1:
  77    case MESA_FORMAT_RGB_DXT1:
  78       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
  79    case MESA_FORMAT_RGBA_DXT3:
  80       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
  81    case MESA_FORMAT_RGBA_DXT5:
  82       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
  83    case MESA_FORMAT_S8_Z24:
  84       return (MAPSURF_32BIT | MT_32BIT_xI824);
  85    default:
  86       fprintf(stderr, "%s: bad image format %x\n", __FUNCTION__, mesa_format);
  87       abort();
  88       return 0;
  89    }
  90 }
  91
  92
  93
  94
  95 /* The i915 (and related graphics cores) do not support GL_CLAMP.  The
  96  * Intel drivers for "other operating systems" implement GL_CLAMP as
  97  * GL_CLAMP_TO_EDGE, so the same is done here.
  98  */
  99 static GLuint
 100 translate_wrap_mode(GLenum wrap)
 101 {
 102    switch (wrap) {
 103    case GL_REPEAT:
 104       return TEXCOORDMODE_WRAP;
 105    case GL_CLAMP:
 106       return TEXCOORDMODE_CLAMP_EDGE;   /* not quite correct */
 107    case GL_CLAMP_TO_EDGE:
 108       return TEXCOORDMODE_CLAMP_EDGE;
 109    case GL_CLAMP_TO_BORDER:
 110       return TEXCOORDMODE_CLAMP_BORDER;
 111    case GL_MIRRORED_REPEAT:
 112       return TEXCOORDMODE_MIRROR;
 113    default:
 114       return TEXCOORDMODE_WRAP;
 115    }
 116 }
 117
 118
 119
 120 /* Recalculate all state from scratch.  Perhaps not the most
 121  * efficient, but this has gotten complex enough that we need
 122  * something which is understandable and reliable.
 123  */
 124 static GLboolean
 125 i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
 126 {
 127    GLcontext *ctx = &intel->ctx;
 128    struct i915_context *i915 = i915_context(ctx);
 129    struct gl_texture_unit *tUnit = &ctx->Texture.Unit[unit];
 130    struct gl_texture_object *tObj = tUnit->_Current;
 131    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 132    struct gl_texture_image *firstImage;
 133    GLuint *state = i915->state.Tex[unit], format, pitch;
 134    GLint lodbias, aniso = 0;
 135    GLubyte border[4];
 136
 137    memset(state, 0, sizeof(state));
 138
 139    /*We need to refcount these. */
 140
 141    if (i915->state.tex_buffer[unit] != NULL) {
 142        dri_bo_unreference(i915->state.tex_buffer[unit]);
 143        i915->state.tex_buffer[unit] = NULL;
 144    }
 145
 146    if (!intelObj->imageOverride && !intel_finalize_mipmap_tree(intel, unit))
 147       return GL_FALSE;
 148
 149    /* Get first image here, since intelObj->firstLevel will get set in
 150     * the intel_finalize_mipmap_tree() call above.
 151     */
 152    firstImage = tObj->Image[0][intelObj->firstLevel];
 153
 154    if (intelObj->imageOverride) {
 155       i915->state.tex_buffer[unit] = NULL;
 156       i915->state.tex_offset[unit] = intelObj->textureOffset;
 157
 158       switch (intelObj->depthOverride) {
 159       case 32:
 160          format = MAPSURF_32BIT | MT_32BIT_ARGB8888;
 161          break;
 162       case 24:
 163       default:
 164          format = MAPSURF_32BIT | MT_32BIT_XRGB8888;
 165          break;
 166       case 16:
 167          format = MAPSURF_16BIT | MT_16BIT_RGB565;
 168          break;
 169       }
 170
 171       pitch = intelObj->pitchOverride;
 172    } else {
 173       GLuint dst_x, dst_y;
 174
 175       intel_miptree_get_image_offset(intelObj->mt, intelObj->firstLevel, 0, 0,
 176                                      &dst_x, &dst_y);
 177
 178       dri_bo_reference(intelObj->mt->region->buffer);
 179       i915->state.tex_buffer[unit] = intelObj->mt->region->buffer;
 180       /* XXX: This calculation is probably broken for tiled images with
 181        * a non-page-aligned offset.
 182        */
 183       i915->state.tex_offset[unit] = (dst_x + dst_y * intelObj->mt->pitch) *
 184          intelObj->mt->cpp;
 185
 186       format = translate_texture_format(firstImage->TexFormat,
 187                                         firstImage->InternalFormat,
 188                                         tObj->DepthMode);
 189       pitch = intelObj->mt->pitch * intelObj->mt->cpp;
 190    }
 191
 192    state[I915_TEXREG_MS3] =
 193       (((firstImage->Height - 1) << MS3_HEIGHT_SHIFT) |
 194        ((firstImage->Width - 1) << MS3_WIDTH_SHIFT) | format);
 195
 196    if (intelObj->mt->region->tiling != I915_TILING_NONE) {
 197       state[I915_TEXREG_MS3] |= MS3_TILED_SURFACE;
 198       if (intelObj->mt->region->tiling == I915_TILING_Y)
 199          state[I915_TEXREG_MS3] |= MS3_TILE_WALK;
 200    }
 201
 202    state[I915_TEXREG_MS4] =
 203      ((((pitch / 4) - 1) << MS4_PITCH_SHIFT) | MS4_CUBE_FACE_ENA_MASK |
 204        ((((intelObj->lastLevel - intelObj->firstLevel) * 4)) <<
 205         MS4_MAX_LOD_SHIFT) | ((firstImage->Depth - 1) <<
 206                               MS4_VOLUME_DEPTH_SHIFT));
 207
 208
 209    {
 210       GLuint minFilt, mipFilt, magFilt;
 211
 212       switch (tObj->MinFilter) {
 213       case GL_NEAREST:
 214          minFilt = FILTER_NEAREST;
 215          mipFilt = MIPFILTER_NONE;
 216          break;
 217       case GL_LINEAR:
 218          minFilt = FILTER_LINEAR;
 219          mipFilt = MIPFILTER_NONE;
 220          break;
 221       case GL_NEAREST_MIPMAP_NEAREST:
 222          minFilt = FILTER_NEAREST;
 223          mipFilt = MIPFILTER_NEAREST;
 224          break;
 225       case GL_LINEAR_MIPMAP_NEAREST:
 226          minFilt = FILTER_LINEAR;
 227          mipFilt = MIPFILTER_NEAREST;
 228          break;
 229       case GL_NEAREST_MIPMAP_LINEAR:
 230          minFilt = FILTER_NEAREST;
 231          mipFilt = MIPFILTER_LINEAR;
 232          break;
 233       case GL_LINEAR_MIPMAP_LINEAR:
 234          minFilt = FILTER_LINEAR;
 235          mipFilt = MIPFILTER_LINEAR;
 236          break;
 237       default:
 238          return GL_FALSE;
 239       }
 240
 241       if (tObj->MaxAnisotropy > 1.0) {
 242          minFilt = FILTER_ANISOTROPIC;
 243          magFilt = FILTER_ANISOTROPIC;
 244          if (tObj->MaxAnisotropy > 2.0)
 245             aniso = SS2_MAX_ANISO_4;
 246          else
 247             aniso = SS2_MAX_ANISO_2;
 248       }
 249       else {
 250          switch (tObj->MagFilter) {
 251          case GL_NEAREST:
 252             magFilt = FILTER_NEAREST;
 253             break;
 254          case GL_LINEAR:
 255             magFilt = FILTER_LINEAR;
 256             break;
 257          default:
 258             return GL_FALSE;
 259          }
 260       }
 261
 262       lodbias = (int) ((tUnit->LodBias + tObj->LodBias) * 16.0);
 263       if (lodbias < -256)
 264           lodbias = -256;
 265       if (lodbias > 255)
 266           lodbias = 255;
 267       state[I915_TEXREG_SS2] = ((lodbias << SS2_LOD_BIAS_SHIFT) &
 268                                 SS2_LOD_BIAS_MASK);
 269
 270       /* YUV conversion:
 271        */
 272       if (firstImage->TexFormat == MESA_FORMAT_YCBCR ||
 273           firstImage->TexFormat == MESA_FORMAT_YCBCR_REV)
 274          state[I915_TEXREG_SS2] |= SS2_COLORSPACE_CONVERSION;
 275
 276       /* Shadow:
 277        */
 278       if (tObj->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB &&
 279           tObj->Target != GL_TEXTURE_3D) {
 280          if (tObj->Target == GL_TEXTURE_1D)
 281             return GL_FALSE;
 282
 283          state[I915_TEXREG_SS2] |=
 284             (SS2_SHADOW_ENABLE |
 285              intel_translate_shadow_compare_func(tObj->CompareFunc));
 286
 287          minFilt = FILTER_4X4_FLAT;
 288          magFilt = FILTER_4X4_FLAT;
 289       }
 290
 291       state[I915_TEXREG_SS2] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
 292                                  (mipFilt << SS2_MIP_FILTER_SHIFT) |
 293                                  (magFilt << SS2_MAG_FILTER_SHIFT) |
 294                                  aniso);
 295    }
 296
 297    {
 298       GLenum ws = tObj->WrapS;
 299       GLenum wt = tObj->WrapT;
 300       GLenum wr = tObj->WrapR;
 301
 302
 303       /* 3D textures don't seem to respect the border color.
 304        * Fallback if there's ever a danger that they might refer to
 305        * it.
 306        *
 307        * Effectively this means fallback on 3D clamp or
 308        * clamp_to_border.
 309        */
 310       if (tObj->Target == GL_TEXTURE_3D &&
 311           (tObj->MinFilter != GL_NEAREST ||
 312            tObj->MagFilter != GL_NEAREST) &&
 313           (ws == GL_CLAMP ||
 314            wt == GL_CLAMP ||
 315            wr == GL_CLAMP ||
 316            ws == GL_CLAMP_TO_BORDER ||
 317            wt == GL_CLAMP_TO_BORDER || wr == GL_CLAMP_TO_BORDER))
 318          return GL_FALSE;
 319
 320       /* Only support TEXCOORDMODE_CLAMP_EDGE and TEXCOORDMODE_CUBE (not
 321        * used) when using cube map texture coordinates
 322        */
 323       if (tObj->Target == GL_TEXTURE_CUBE_MAP_ARB &&
 324           (((ws != GL_CLAMP) && (ws != GL_CLAMP_TO_EDGE)) ||
 325            ((wt != GL_CLAMP) && (wt != GL_CLAMP_TO_EDGE))))
 326           return GL_FALSE;
 327
 328       state[I915_TEXREG_SS3] = ss3;     /* SS3_NORMALIZED_COORDS */
 329
 330       state[I915_TEXREG_SS3] |=
 331          ((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
 332           (translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
 333           (translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT));
 334
 335       state[I915_TEXREG_SS3] |= (unit << SS3_TEXTUREMAP_INDEX_SHIFT);
 336    }
 337
 338    /* convert border color from float to ubyte */
 339    CLAMPED_FLOAT_TO_UBYTE(border[0], tObj->BorderColor[0]);
 340    CLAMPED_FLOAT_TO_UBYTE(border[1], tObj->BorderColor[1]);
 341    CLAMPED_FLOAT_TO_UBYTE(border[2], tObj->BorderColor[2]);
 342    CLAMPED_FLOAT_TO_UBYTE(border[3], tObj->BorderColor[3]);
 343
 344    if (firstImage->_BaseFormat == GL_DEPTH_COMPONENT) {
 345       /* GL specs that border color for depth textures is taken from the
 346        * R channel, while the hardware uses A.  Spam R into all the channels
 347        * for safety.
 348        */
 349       state[I915_TEXREG_SS4] = INTEL_PACKCOLOR8888(border[0],
 350                                                    border[0],
 351                                                    border[0],
 352                                                    border[0]);
 353    } else {
 354       state[I915_TEXREG_SS4] = INTEL_PACKCOLOR8888(border[0],
 355                                                    border[1],
 356                                                    border[2],
 357                                                    border[3]);
 358    }
 359
 360
 361    I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), GL_TRUE);
 362    /* memcmp was already disabled, but definitely won't work as the
 363     * region might now change and that wouldn't be detected:
 364     */
 365    I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 366
 367
 368 #if 0
 369    DBG(TEXTURE, "state[I915_TEXREG_SS2] = 0x%x\n", state[I915_TEXREG_SS2]);
 370    DBG(TEXTURE, "state[I915_TEXREG_SS3] = 0x%x\n", state[I915_TEXREG_SS3]);
 371    DBG(TEXTURE, "state[I915_TEXREG_SS4] = 0x%x\n", state[I915_TEXREG_SS4]);
 372    DBG(TEXTURE, "state[I915_TEXREG_MS2] = 0x%x\n", state[I915_TEXREG_MS2]);
 373    DBG(TEXTURE, "state[I915_TEXREG_MS3] = 0x%x\n", state[I915_TEXREG_MS3]);
 374    DBG(TEXTURE, "state[I915_TEXREG_MS4] = 0x%x\n", state[I915_TEXREG_MS4]);
 375 #endif
 376
 377    return GL_TRUE;
 378 }
 379
 380
 381
 382
 383 void
 384 i915UpdateTextureState(struct intel_context *intel)
 385 {
 386    GLboolean ok = GL_TRUE;
 387    GLuint i;
 388
 389    for (i = 0; i < I915_TEX_UNITS && ok; i++) {
 390       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 391       case TEXTURE_1D_BIT:
 392       case TEXTURE_2D_BIT:
 393       case TEXTURE_CUBE_BIT:
 394       case TEXTURE_3D_BIT:
 395          ok = i915_update_tex_unit(intel, i, SS3_NORMALIZED_COORDS);
 396          break;
 397       case TEXTURE_RECT_BIT:
 398          ok = i915_update_tex_unit(intel, i, 0);
 399          break;
 400       case 0:{
 401             struct i915_context *i915 = i915_context(&intel->ctx);
 402             if (i915->state.active & I915_UPLOAD_TEX(i))
 403                I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(i), GL_FALSE);
 404
 405             if (i915->state.tex_buffer[i] != NULL) {
 406                dri_bo_unreference(i915->state.tex_buffer[i]);
 407                i915->state.tex_buffer[i] = NULL;
 408             }
 409
 410             break;
 411          }
 412       default:
 413          ok = GL_FALSE;
 414          break;
 415       }
 416    }
 417
 418    FALLBACK(intel, I915_FALLBACK_TEXTURE, !ok);
 419 }