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
  32 #include "intel_mipmap_tree.h"
  33 #include "intel_tex.h"
  34
  35 #include "i915_context.h"
  36 #include "i915_reg.h"
  37
  38
  39 static GLuint
  40 translate_texture_format(gl_format mesa_format, GLuint internal_format,
  41                          GLenum DepthMode)
  42 {
  43    switch (mesa_format) {
  44    case MESA_FORMAT_L8:
  45       return MAPSURF_8BIT | MT_8BIT_L8;
  46    case MESA_FORMAT_I8:
  47       return MAPSURF_8BIT | MT_8BIT_I8;
  48    case MESA_FORMAT_A8:
  49       return MAPSURF_8BIT | MT_8BIT_A8;
  50    case MESA_FORMAT_AL88:
  51       return MAPSURF_16BIT | MT_16BIT_AY88;
  52    case MESA_FORMAT_RGB565:
  53       return MAPSURF_16BIT | MT_16BIT_RGB565;
  54    case MESA_FORMAT_ARGB1555:
  55       return MAPSURF_16BIT | MT_16BIT_ARGB1555;
  56    case MESA_FORMAT_ARGB4444:
  57       return MAPSURF_16BIT | MT_16BIT_ARGB4444;
  58    case MESA_FORMAT_ARGB8888:
  59       if (internal_format == GL_RGB)
  60          return MAPSURF_32BIT | MT_32BIT_XRGB8888;
  61       else
  62          return MAPSURF_32BIT | MT_32BIT_ARGB8888;
  63    case MESA_FORMAT_XRGB8888:
  64       return MAPSURF_32BIT | MT_32BIT_XRGB8888;
  65    case MESA_FORMAT_YCBCR_REV:
  66       return (MAPSURF_422 | MT_422_YCRCB_NORMAL);
  67    case MESA_FORMAT_YCBCR:
  68       return (MAPSURF_422 | MT_422_YCRCB_SWAPY);
  69    case MESA_FORMAT_RGB_FXT1:
  70    case MESA_FORMAT_RGBA_FXT1:
  71       return (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
  72    case MESA_FORMAT_Z16:
  73       if (DepthMode == GL_ALPHA)
  74           return (MAPSURF_16BIT | MT_16BIT_A16);
  75       else if (DepthMode == GL_INTENSITY)
  76           return (MAPSURF_16BIT | MT_16BIT_I16);
  77       else
  78           return (MAPSURF_16BIT | MT_16BIT_L16);
  79    case MESA_FORMAT_RGBA_DXT1:
  80    case MESA_FORMAT_RGB_DXT1:
  81       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
  82    case MESA_FORMAT_RGBA_DXT3:
  83       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
  84    case MESA_FORMAT_RGBA_DXT5:
  85       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
  86    case MESA_FORMAT_S8_Z24:
  87       if (DepthMode == GL_ALPHA)
  88          return (MAPSURF_32BIT | MT_32BIT_x8A24);
  89       else if (DepthMode == GL_INTENSITY)
  90          return (MAPSURF_32BIT | MT_32BIT_x8I24);
  91       else
  92          return (MAPSURF_32BIT | MT_32BIT_x8L24);
  93    default:
  94       fprintf(stderr, "%s: bad image format %x\n", __FUNCTION__, mesa_format);
  95       abort();
  96       return 0;
  97    }
  98 }
  99
 100
 101
 102
 103 /* The i915 (and related graphics cores) do not support GL_CLAMP.  The
 104  * Intel drivers for "other operating systems" implement GL_CLAMP as
 105  * GL_CLAMP_TO_EDGE, so the same is done here.
 106  */
 107 static GLuint
 108 translate_wrap_mode(GLenum wrap)
 109 {
 110    switch (wrap) {
 111    case GL_REPEAT:
 112       return TEXCOORDMODE_WRAP;
 113    case GL_CLAMP:
 114       return TEXCOORDMODE_CLAMP_EDGE;   /* not quite correct */
 115    case GL_CLAMP_TO_EDGE:
 116       return TEXCOORDMODE_CLAMP_EDGE;
 117    case GL_CLAMP_TO_BORDER:
 118       return TEXCOORDMODE_CLAMP_BORDER;
 119    case GL_MIRRORED_REPEAT:
 120       return TEXCOORDMODE_MIRROR;
 121    default:
 122       return TEXCOORDMODE_WRAP;
 123    }
 124 }
 125
 126
 127
 128 /* Recalculate all state from scratch.  Perhaps not the most
 129  * efficient, but this has gotten complex enough that we need
 130  * something which is understandable and reliable.
 131  */
 132 static GLboolean
 133 i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
 134 {
 135    GLcontext *ctx = &intel->ctx;
 136    struct i915_context *i915 = i915_context(ctx);
 137    struct gl_texture_unit *tUnit = &ctx->Texture.Unit[unit];
 138    struct gl_texture_object *tObj = tUnit->_Current;
 139    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 140    struct gl_texture_image *firstImage;
 141    GLuint *state = i915->state.Tex[unit], format, pitch;
 142    GLint lodbias, aniso = 0;
 143    GLubyte border[4];
 144
 145    memset(state, 0, sizeof(state));
 146
 147    /*We need to refcount these. */
 148
 149    if (i915->state.tex_buffer[unit] != NULL) {
 150        dri_bo_unreference(i915->state.tex_buffer[unit]);
 151        i915->state.tex_buffer[unit] = NULL;
 152    }
 153
 154    if (!intelObj->imageOverride && !intel_finalize_mipmap_tree(intel, unit))
 155       return GL_FALSE;
 156
 157    /* Get first image here, since intelObj->firstLevel will get set in
 158     * the intel_finalize_mipmap_tree() call above.
 159     */
 160    firstImage = tObj->Image[0][intelObj->firstLevel];
 161
 162    if (intelObj->imageOverride) {
 163       i915->state.tex_buffer[unit] = NULL;
 164       i915->state.tex_offset[unit] = intelObj->textureOffset;
 165
 166       switch (intelObj->depthOverride) {
 167       case 32:
 168          format = MAPSURF_32BIT | MT_32BIT_ARGB8888;
 169          break;
 170       case 24:
 171       default:
 172          format = MAPSURF_32BIT | MT_32BIT_XRGB8888;
 173          break;
 174       case 16:
 175          format = MAPSURF_16BIT | MT_16BIT_RGB565;
 176          break;
 177       }
 178
 179       pitch = intelObj->pitchOverride;
 180    } else {
 181       GLuint dst_x, dst_y;
 182
 183       intel_miptree_get_image_offset(intelObj->mt, intelObj->firstLevel, 0, 0,
 184                                      &dst_x, &dst_y);
 185
 186       dri_bo_reference(intelObj->mt->region->buffer);
 187       i915->state.tex_buffer[unit] = intelObj->mt->region->buffer;
 188       /* XXX: This calculation is probably broken for tiled images with
 189        * a non-page-aligned offset.
 190        */
 191       i915->state.tex_offset[unit] = (dst_x + dst_y * intelObj->mt->pitch) *
 192          intelObj->mt->cpp;
 193
 194       format = translate_texture_format(firstImage->TexFormat,
 195                                         firstImage->InternalFormat,
 196                                         tObj->DepthMode);
 197       pitch = intelObj->mt->pitch * intelObj->mt->cpp;
 198    }
 199
 200    state[I915_TEXREG_MS3] =
 201       (((firstImage->Height - 1) << MS3_HEIGHT_SHIFT) |
 202        ((firstImage->Width - 1) << MS3_WIDTH_SHIFT) | format);
 203
 204    if (intelObj->mt->region->tiling != I915_TILING_NONE) {
 205       state[I915_TEXREG_MS3] |= MS3_TILED_SURFACE;
 206       if (intelObj->mt->region->tiling == I915_TILING_Y)
 207          state[I915_TEXREG_MS3] |= MS3_TILE_WALK;
 208    }
 209
 210    state[I915_TEXREG_MS4] =
 211       ((((pitch / 4) - 1) << MS4_PITCH_SHIFT) |
 212        MS4_CUBE_FACE_ENA_MASK |
 213        (U_FIXED(CLAMP(tObj->MaxLod, 0.0, 11.0), 2) << MS4_MAX_LOD_SHIFT) |
 214        ((firstImage->Depth - 1) << MS4_VOLUME_DEPTH_SHIFT));
 215
 216
 217    {
 218       GLuint minFilt, mipFilt, magFilt;
 219
 220       switch (tObj->MinFilter) {
 221       case GL_NEAREST:
 222          minFilt = FILTER_NEAREST;
 223          mipFilt = MIPFILTER_NONE;
 224          break;
 225       case GL_LINEAR:
 226          minFilt = FILTER_LINEAR;
 227          mipFilt = MIPFILTER_NONE;
 228          break;
 229       case GL_NEAREST_MIPMAP_NEAREST:
 230          minFilt = FILTER_NEAREST;
 231          mipFilt = MIPFILTER_NEAREST;
 232          break;
 233       case GL_LINEAR_MIPMAP_NEAREST:
 234          minFilt = FILTER_LINEAR;
 235          mipFilt = MIPFILTER_NEAREST;
 236          break;
 237       case GL_NEAREST_MIPMAP_LINEAR:
 238          minFilt = FILTER_NEAREST;
 239          mipFilt = MIPFILTER_LINEAR;
 240          break;
 241       case GL_LINEAR_MIPMAP_LINEAR:
 242          minFilt = FILTER_LINEAR;
 243          mipFilt = MIPFILTER_LINEAR;
 244          break;
 245       default:
 246          return GL_FALSE;
 247       }
 248
 249       if (tObj->MaxAnisotropy > 1.0) {
 250          minFilt = FILTER_ANISOTROPIC;
 251          magFilt = FILTER_ANISOTROPIC;
 252          if (tObj->MaxAnisotropy > 2.0)
 253             aniso = SS2_MAX_ANISO_4;
 254          else
 255             aniso = SS2_MAX_ANISO_2;
 256       }
 257       else {
 258          switch (tObj->MagFilter) {
 259          case GL_NEAREST:
 260             magFilt = FILTER_NEAREST;
 261             break;
 262          case GL_LINEAR:
 263             magFilt = FILTER_LINEAR;
 264             break;
 265          default:
 266             return GL_FALSE;
 267          }
 268       }
 269
 270       lodbias = (int) ((tUnit->LodBias + tObj->LodBias) * 16.0);
 271       if (lodbias < -256)
 272           lodbias = -256;
 273       if (lodbias > 255)
 274           lodbias = 255;
 275       state[I915_TEXREG_SS2] = ((lodbias << SS2_LOD_BIAS_SHIFT) &
 276                                 SS2_LOD_BIAS_MASK);
 277
 278       /* YUV conversion:
 279        */
 280       if (firstImage->TexFormat == MESA_FORMAT_YCBCR ||
 281           firstImage->TexFormat == MESA_FORMAT_YCBCR_REV)
 282          state[I915_TEXREG_SS2] |= SS2_COLORSPACE_CONVERSION;
 283
 284       /* Shadow:
 285        */
 286       if (tObj->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB &&
 287           tObj->Target != GL_TEXTURE_3D) {
 288          if (tObj->Target == GL_TEXTURE_1D)
 289             return GL_FALSE;
 290
 291          state[I915_TEXREG_SS2] |=
 292             (SS2_SHADOW_ENABLE |
 293              intel_translate_shadow_compare_func(tObj->CompareFunc));
 294
 295          minFilt = FILTER_4X4_FLAT;
 296          magFilt = FILTER_4X4_FLAT;
 297       }
 298
 299       state[I915_TEXREG_SS2] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
 300                                  (mipFilt << SS2_MIP_FILTER_SHIFT) |
 301                                  (magFilt << SS2_MAG_FILTER_SHIFT) |
 302                                  aniso);
 303    }
 304
 305    {
 306       GLenum ws = tObj->WrapS;
 307       GLenum wt = tObj->WrapT;
 308       GLenum wr = tObj->WrapR;
 309
 310       /* We program 1D textures as 2D textures, so the 2D texcoord could
 311        * result in sampling border values if we don't set the T wrap to
 312        * repeat.
 313        */
 314       if (tObj->Target == GL_TEXTURE_1D)
 315          wt = GL_REPEAT;
 316
 317       /* 3D textures don't seem to respect the border color.
 318        * Fallback if there's ever a danger that they might refer to
 319        * it.
 320        *
 321        * Effectively this means fallback on 3D clamp or
 322        * clamp_to_border.
 323        */
 324       if (tObj->Target == GL_TEXTURE_3D &&
 325           (tObj->MinFilter != GL_NEAREST ||
 326            tObj->MagFilter != GL_NEAREST) &&
 327           (ws == GL_CLAMP ||
 328            wt == GL_CLAMP ||
 329            wr == GL_CLAMP ||
 330            ws == GL_CLAMP_TO_BORDER ||
 331            wt == GL_CLAMP_TO_BORDER || wr == GL_CLAMP_TO_BORDER))
 332          return GL_FALSE;
 333
 334       /* Only support TEXCOORDMODE_CLAMP_EDGE and TEXCOORDMODE_CUBE (not
 335        * used) when using cube map texture coordinates
 336        */
 337       if (tObj->Target == GL_TEXTURE_CUBE_MAP_ARB &&
 338           (((ws != GL_CLAMP) && (ws != GL_CLAMP_TO_EDGE)) ||
 339            ((wt != GL_CLAMP) && (wt != GL_CLAMP_TO_EDGE))))
 340           return GL_FALSE;
 341
 342       state[I915_TEXREG_SS3] = ss3;     /* SS3_NORMALIZED_COORDS */
 343
 344       state[I915_TEXREG_SS3] |=
 345          ((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
 346           (translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
 347           (translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT));
 348
 349       state[I915_TEXREG_SS3] |= (unit << SS3_TEXTUREMAP_INDEX_SHIFT);
 350       state[I915_TEXREG_SS3] |= (U_FIXED(CLAMP(tObj->MinLod, 0.0, 11.0), 4) <<
 351                                  SS3_MIN_LOD_SHIFT);
 352
 353    }
 354
 355    /* convert border color from float to ubyte */
 356    CLAMPED_FLOAT_TO_UBYTE(border[0], tObj->BorderColor[0]);
 357    CLAMPED_FLOAT_TO_UBYTE(border[1], tObj->BorderColor[1]);
 358    CLAMPED_FLOAT_TO_UBYTE(border[2], tObj->BorderColor[2]);
 359    CLAMPED_FLOAT_TO_UBYTE(border[3], tObj->BorderColor[3]);
 360
 361    if (firstImage->_BaseFormat == GL_DEPTH_COMPONENT) {
 362       /* GL specs that border color for depth textures is taken from the
 363        * R channel, while the hardware uses A.  Spam R into all the channels
 364        * for safety.
 365        */
 366       state[I915_TEXREG_SS4] = INTEL_PACKCOLOR8888(border[0],
 367                                                    border[0],
 368                                                    border[0],
 369                                                    border[0]);
 370    } else {
 371       state[I915_TEXREG_SS4] = INTEL_PACKCOLOR8888(border[0],
 372                                                    border[1],
 373                                                    border[2],
 374                                                    border[3]);
 375    }
 376
 377
 378    I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), GL_TRUE);
 379    /* memcmp was already disabled, but definitely won't work as the
 380     * region might now change and that wouldn't be detected:
 381     */
 382    I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 383
 384
 385 #if 0
 386    DBG(TEXTURE, "state[I915_TEXREG_SS2] = 0x%x\n", state[I915_TEXREG_SS2]);
 387    DBG(TEXTURE, "state[I915_TEXREG_SS3] = 0x%x\n", state[I915_TEXREG_SS3]);
 388    DBG(TEXTURE, "state[I915_TEXREG_SS4] = 0x%x\n", state[I915_TEXREG_SS4]);
 389    DBG(TEXTURE, "state[I915_TEXREG_MS2] = 0x%x\n", state[I915_TEXREG_MS2]);
 390    DBG(TEXTURE, "state[I915_TEXREG_MS3] = 0x%x\n", state[I915_TEXREG_MS3]);
 391    DBG(TEXTURE, "state[I915_TEXREG_MS4] = 0x%x\n", state[I915_TEXREG_MS4]);
 392 #endif
 393
 394    return GL_TRUE;
 395 }
 396
 397
 398
 399
 400 void
 401 i915UpdateTextureState(struct intel_context *intel)
 402 {
 403    GLboolean ok = GL_TRUE;
 404    GLuint i;
 405
 406    for (i = 0; i < I915_TEX_UNITS && ok; i++) {
 407       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 408       case TEXTURE_1D_BIT:
 409       case TEXTURE_2D_BIT:
 410       case TEXTURE_CUBE_BIT:
 411       case TEXTURE_3D_BIT:
 412          ok = i915_update_tex_unit(intel, i, SS3_NORMALIZED_COORDS);
 413          break;
 414       case TEXTURE_RECT_BIT:
 415          ok = i915_update_tex_unit(intel, i, 0);
 416          break;
 417       case 0:{
 418             struct i915_context *i915 = i915_context(&intel->ctx);
 419             if (i915->state.active & I915_UPLOAD_TEX(i))
 420                I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(i), GL_FALSE);
 421
 422             if (i915->state.tex_buffer[i] != NULL) {
 423                dri_bo_unreference(i915->state.tex_buffer[i]);
 424                i915->state.tex_buffer[i] = NULL;
 425             }
 426
 427             break;
 428          }
 429       default:
 430          ok = GL_FALSE;
 431          break;
 432       }
 433    }
 434
 435    FALLBACK(intel, I915_FALLBACK_TEXTURE, !ok);
 436 }