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

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 VMware, Inc.
   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 VMWARE 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 #include "main/samplerobj.h"
  33
  34 #include "intel_mipmap_tree.h"
  35 #include "intel_tex.h"
  36
  37 #include "i915_context.h"
  38 #include "i915_reg.h"
  39
  40
  41 static GLuint
  42 translate_texture_format(mesa_format mesa_format, GLenum DepthMode)
  43 {
  44    switch (mesa_format) {
  45    case MESA_FORMAT_L_UNORM8:
  46       return MAPSURF_8BIT | MT_8BIT_L8;
  47    case MESA_FORMAT_I_UNORM8:
  48       return MAPSURF_8BIT | MT_8BIT_I8;
  49    case MESA_FORMAT_A_UNORM8:
  50       return MAPSURF_8BIT | MT_8BIT_A8;
  51    case MESA_FORMAT_L8A8_UNORM:
  52       return MAPSURF_16BIT | MT_16BIT_AY88;
  53    case MESA_FORMAT_B5G6R5_UNORM:
  54       return MAPSURF_16BIT | MT_16BIT_RGB565;
  55    case MESA_FORMAT_B5G5R5A1_UNORM:
  56       return MAPSURF_16BIT | MT_16BIT_ARGB1555;
  57    case MESA_FORMAT_B4G4R4A4_UNORM:
  58       return MAPSURF_16BIT | MT_16BIT_ARGB4444;
  59    case MESA_FORMAT_B8G8R8A8_SRGB:
  60    case MESA_FORMAT_B8G8R8A8_UNORM:
  61       return MAPSURF_32BIT | MT_32BIT_ARGB8888;
  62    case MESA_FORMAT_B8G8R8X8_UNORM:
  63       return MAPSURF_32BIT | MT_32BIT_XRGB8888;
  64    case MESA_FORMAT_R8G8B8A8_UNORM:
  65       return MAPSURF_32BIT | MT_32BIT_ABGR8888;
  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_Z_UNORM16:
  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    case MESA_FORMAT_SRGB_DXT1:
  83    case MESA_FORMAT_SRGBA_DXT1:
  84       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
  85    case MESA_FORMAT_RGBA_DXT3:
  86    case MESA_FORMAT_SRGBA_DXT3:
  87       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
  88    case MESA_FORMAT_RGBA_DXT5:
  89    case MESA_FORMAT_SRGBA_DXT5:
  90       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
  91    case MESA_FORMAT_Z24_UNORM_S8_UINT:
  92    case MESA_FORMAT_Z24_UNORM_X8_UINT:
  93       if (DepthMode == GL_ALPHA)
  94          return (MAPSURF_32BIT | MT_32BIT_x8A24);
  95       else if (DepthMode == GL_INTENSITY)
  96          return (MAPSURF_32BIT | MT_32BIT_x8I24);
  97       else
  98          return (MAPSURF_32BIT | MT_32BIT_x8L24);
  99    default:
 100       fprintf(stderr, "%s: bad image format %s\n", __func__,
 101               _mesa_get_format_name(mesa_format));
 102       abort();
 103       return 0;
 104    }
 105 }
 106
 107
 108
 109
 110 /* The i915 (and related graphics cores) do not support GL_CLAMP.  The
 111  * Intel drivers for "other operating systems" implement GL_CLAMP as
 112  * GL_CLAMP_TO_EDGE, so the same is done here.
 113  */
 114 static GLuint
 115 translate_wrap_mode(GLenum wrap)
 116 {
 117    switch (wrap) {
 118    case GL_REPEAT:
 119       return TEXCOORDMODE_WRAP;
 120    case GL_CLAMP:
 121       return TEXCOORDMODE_CLAMP_EDGE;   /* not quite correct */
 122    case GL_CLAMP_TO_EDGE:
 123       return TEXCOORDMODE_CLAMP_EDGE;
 124    case GL_CLAMP_TO_BORDER:
 125       return TEXCOORDMODE_CLAMP_BORDER;
 126    case GL_MIRRORED_REPEAT:
 127       return TEXCOORDMODE_MIRROR;
 128    default:
 129       return TEXCOORDMODE_WRAP;
 130    }
 131 }
 132
 133
 134
 135 /* Recalculate all state from scratch.  Perhaps not the most
 136  * efficient, but this has gotten complex enough that we need
 137  * something which is understandable and reliable.
 138  */
 139 static bool
 140 i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
 141 {
 142    struct gl_context *ctx = &intel->ctx;
 143    struct i915_context *i915 = i915_context(ctx);
 144    struct gl_texture_unit *tUnit = &ctx->Texture.Unit[unit];
 145    struct gl_texture_object *tObj = tUnit->_Current;
 146    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 147    struct gl_texture_image *firstImage;
 148    struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit);
 149    GLuint *state = i915->state.Tex[unit], format;
 150    GLint lodbias, aniso = 0;
 151    GLubyte border[4];
 152    GLfloat maxlod;
 153
 154    memset(state, 0, sizeof(*state));
 155
 156    /*We need to refcount these. */
 157
 158    if (i915->state.tex_buffer[unit] != NULL) {
 159        drm_intel_bo_unreference(i915->state.tex_buffer[unit]);
 160        i915->state.tex_buffer[unit] = NULL;
 161    }
 162
 163    if (!intel_finalize_mipmap_tree(intel, unit))
 164       return false;
 165
 166    /* Get first image here, since intelObj->firstLevel will get set in
 167     * the intel_finalize_mipmap_tree() call above.
 168     */
 169    firstImage = tObj->Image[0][tObj->BaseLevel];
 170
 171    drm_intel_bo_reference(intelObj->mt->region->bo);
 172    i915->state.tex_buffer[unit] = intelObj->mt->region->bo;
 173    i915->state.tex_offset[unit] = intelObj->mt->offset;
 174
 175    format = translate_texture_format(firstImage->TexFormat,
 176                                      tObj->DepthMode);
 177
 178    state[I915_TEXREG_MS3] =
 179       (((firstImage->Height - 1) << MS3_HEIGHT_SHIFT) |
 180        ((firstImage->Width - 1) << MS3_WIDTH_SHIFT) | format);
 181
 182    if (intelObj->mt->region->tiling != I915_TILING_NONE) {
 183       state[I915_TEXREG_MS3] |= MS3_TILED_SURFACE;
 184       if (intelObj->mt->region->tiling == I915_TILING_Y)
 185          state[I915_TEXREG_MS3] |= MS3_TILE_WALK;
 186    }
 187
 188    /* We get one field with fraction bits for the maximum addressable
 189     * (lowest resolution) LOD.  Use it to cover both MAX_LEVEL and
 190     * MAX_LOD.
 191     */
 192    maxlod = MIN2(sampler->MaxLod, tObj->_MaxLevel - tObj->BaseLevel);
 193    state[I915_TEXREG_MS4] =
 194       ((((intelObj->mt->region->pitch / 4) - 1) << MS4_PITCH_SHIFT) |
 195        MS4_CUBE_FACE_ENA_MASK |
 196        (U_FIXED(CLAMP(maxlod, 0.0, 11.0), 2) << MS4_MAX_LOD_SHIFT) |
 197        ((firstImage->Depth - 1) << MS4_VOLUME_DEPTH_SHIFT));
 198
 199
 200    {
 201       GLuint minFilt, mipFilt, magFilt;
 202
 203       switch (sampler->MinFilter) {
 204       case GL_NEAREST:
 205          minFilt = FILTER_NEAREST;
 206          mipFilt = MIPFILTER_NONE;
 207          break;
 208       case GL_LINEAR:
 209          minFilt = FILTER_LINEAR;
 210          mipFilt = MIPFILTER_NONE;
 211          break;
 212       case GL_NEAREST_MIPMAP_NEAREST:
 213          minFilt = FILTER_NEAREST;
 214          mipFilt = MIPFILTER_NEAREST;
 215          break;
 216       case GL_LINEAR_MIPMAP_NEAREST:
 217          minFilt = FILTER_LINEAR;
 218          mipFilt = MIPFILTER_NEAREST;
 219          break;
 220       case GL_NEAREST_MIPMAP_LINEAR:
 221          minFilt = FILTER_NEAREST;
 222          mipFilt = MIPFILTER_LINEAR;
 223          break;
 224       case GL_LINEAR_MIPMAP_LINEAR:
 225          minFilt = FILTER_LINEAR;
 226          mipFilt = MIPFILTER_LINEAR;
 227          break;
 228       default:
 229          return false;
 230       }
 231
 232       if (sampler->MaxAnisotropy > 1.0) {
 233          minFilt = FILTER_ANISOTROPIC;
 234          magFilt = FILTER_ANISOTROPIC;
 235          if (sampler->MaxAnisotropy > 2.0)
 236             aniso = SS2_MAX_ANISO_4;
 237          else
 238             aniso = SS2_MAX_ANISO_2;
 239       }
 240       else {
 241          switch (sampler->MagFilter) {
 242          case GL_NEAREST:
 243             magFilt = FILTER_NEAREST;
 244             break;
 245          case GL_LINEAR:
 246             magFilt = FILTER_LINEAR;
 247             break;
 248          default:
 249             return false;
 250          }
 251       }
 252
 253       lodbias = (int) ((tUnit->LodBias + sampler->LodBias) * 16.0);
 254       if (lodbias < -256)
 255           lodbias = -256;
 256       if (lodbias > 255)
 257           lodbias = 255;
 258       state[I915_TEXREG_SS2] = ((lodbias << SS2_LOD_BIAS_SHIFT) &
 259                                 SS2_LOD_BIAS_MASK);
 260
 261       /* YUV conversion:
 262        */
 263       if (firstImage->TexFormat == MESA_FORMAT_YCBCR ||
 264           firstImage->TexFormat == MESA_FORMAT_YCBCR_REV)
 265          state[I915_TEXREG_SS2] |= SS2_COLORSPACE_CONVERSION;
 266
 267       /* Shadow:
 268        */
 269       if (sampler->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB &&
 270           tObj->Target != GL_TEXTURE_3D) {
 271          if (tObj->Target == GL_TEXTURE_1D)
 272             return false;
 273
 274          state[I915_TEXREG_SS2] |=
 275             (SS2_SHADOW_ENABLE |
 276              intel_translate_shadow_compare_func(sampler->CompareFunc));
 277
 278          minFilt = FILTER_4X4_FLAT;
 279          magFilt = FILTER_4X4_FLAT;
 280       }
 281
 282       state[I915_TEXREG_SS2] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
 283                                  (mipFilt << SS2_MIP_FILTER_SHIFT) |
 284                                  (magFilt << SS2_MAG_FILTER_SHIFT) |
 285                                  aniso);
 286    }
 287
 288    {
 289       GLenum ws = sampler->WrapS;
 290       GLenum wt = sampler->WrapT;
 291       GLenum wr = sampler->WrapR;
 292       float minlod;
 293
 294       /* We program 1D textures as 2D textures, so the 2D texcoord could
 295        * result in sampling border values if we don't set the T wrap to
 296        * repeat.
 297        */
 298       if (tObj->Target == GL_TEXTURE_1D)
 299          wt = GL_REPEAT;
 300
 301       /* 3D textures don't seem to respect the border color.
 302        * Fallback if there's ever a danger that they might refer to
 303        * it.
 304        *
 305        * Effectively this means fallback on 3D clamp or
 306        * clamp_to_border.
 307        */
 308       if (tObj->Target == GL_TEXTURE_3D &&
 309           (sampler->MinFilter != GL_NEAREST ||
 310            sampler->MagFilter != GL_NEAREST) &&
 311           (ws == GL_CLAMP ||
 312            wt == GL_CLAMP ||
 313            wr == GL_CLAMP ||
 314            ws == GL_CLAMP_TO_BORDER ||
 315            wt == GL_CLAMP_TO_BORDER || wr == GL_CLAMP_TO_BORDER))
 316          return false;
 317
 318       /* Only support TEXCOORDMODE_CLAMP_EDGE and TEXCOORDMODE_CUBE (not
 319        * used) when using cube map texture coordinates
 320        */
 321       if (tObj->Target == GL_TEXTURE_CUBE_MAP_ARB &&
 322           (((ws != GL_CLAMP) && (ws != GL_CLAMP_TO_EDGE)) ||
 323            ((wt != GL_CLAMP) && (wt != GL_CLAMP_TO_EDGE))))
 324           return false;
 325
 326       /*
 327        * According to 3DSTATE_MAP_STATE at page of 104 in Bspec
 328        * Vol3d 3D Instructions:
 329        *   [DevGDG and DevAlv]: Must be a power of 2 for cube maps.
 330        *   [DevLPT, DevCST and DevBLB]: If not a power of 2, cube maps
 331        *      must have all faces enabled.
 332        *
 333        * But, as I tested on pineview(DevBLB derived), the rendering is
 334        * bad(you will find the color isn't samplered right in some
 335        * fragments). After checking, it seems that the texture layout is
 336        * wrong: making the width and height align of 4(although this
 337        * doesn't make much sense) will fix this issue and also broke some
 338        * others. Well, Bspec mentioned nothing about the layout alignment
 339        * and layout for NPOT cube map.  I guess the Bspec just assume it's
 340        * a POT cube map.
 341        *
 342        * Thus, I guess we need do this for other platforms as well.
 343        */
 344       if (tObj->Target == GL_TEXTURE_CUBE_MAP_ARB &&
 345           !_mesa_is_pow_two(firstImage->Height))
 346          return false;
 347
 348       state[I915_TEXREG_SS3] = ss3;     /* SS3_NORMALIZED_COORDS */
 349
 350       state[I915_TEXREG_SS3] |=
 351          ((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
 352           (translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
 353           (translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT));
 354
 355       minlod = MIN2(sampler->MinLod, tObj->_MaxLevel - tObj->BaseLevel);
 356       state[I915_TEXREG_SS3] |= (unit << SS3_TEXTUREMAP_INDEX_SHIFT);
 357       state[I915_TEXREG_SS3] |= (U_FIXED(CLAMP(minlod, 0.0, 11.0), 4) <<
 358                                  SS3_MIN_LOD_SHIFT);
 359
 360    }
 361
 362    if (sampler->sRGBDecode == GL_DECODE_EXT &&
 363        (_mesa_get_srgb_format_linear(firstImage->TexFormat) !=
 364         firstImage->TexFormat)) {
 365       state[I915_TEXREG_SS2] |= SS2_REVERSE_GAMMA_ENABLE;
 366    }
 367
 368    /* convert border color from float to ubyte */
 369    CLAMPED_FLOAT_TO_UBYTE(border[0], sampler->BorderColor.f[0]);
 370    CLAMPED_FLOAT_TO_UBYTE(border[1], sampler->BorderColor.f[1]);
 371    CLAMPED_FLOAT_TO_UBYTE(border[2], sampler->BorderColor.f[2]);
 372    CLAMPED_FLOAT_TO_UBYTE(border[3], sampler->BorderColor.f[3]);
 373
 374    if (firstImage->_BaseFormat == GL_DEPTH_COMPONENT) {
 375       /* GL specs that border color for depth textures is taken from the
 376        * R channel, while the hardware uses A.  Spam R into all the channels
 377        * for safety.
 378        */
 379       state[I915_TEXREG_SS4] = PACK_COLOR_8888(border[0],
 380                                                border[0],
 381                                                border[0],
 382                                                border[0]);
 383    } else {
 384       state[I915_TEXREG_SS4] = PACK_COLOR_8888(border[3],
 385                                                border[0],
 386                                                border[1],
 387                                                border[2]);
 388    }
 389
 390
 391    I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), true);
 392    /* memcmp was already disabled, but definitely won't work as the
 393     * region might now change and that wouldn't be detected:
 394     */
 395    I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 396
 397
 398 #if 0
 399    DBG(TEXTURE, "state[I915_TEXREG_SS2] = 0x%x\n", state[I915_TEXREG_SS2]);
 400    DBG(TEXTURE, "state[I915_TEXREG_SS3] = 0x%x\n", state[I915_TEXREG_SS3]);
 401    DBG(TEXTURE, "state[I915_TEXREG_SS4] = 0x%x\n", state[I915_TEXREG_SS4]);
 402    DBG(TEXTURE, "state[I915_TEXREG_MS2] = 0x%x\n", state[I915_TEXREG_MS2]);
 403    DBG(TEXTURE, "state[I915_TEXREG_MS3] = 0x%x\n", state[I915_TEXREG_MS3]);
 404    DBG(TEXTURE, "state[I915_TEXREG_MS4] = 0x%x\n", state[I915_TEXREG_MS4]);
 405 #endif
 406
 407    return true;
 408 }
 409
 410
 411
 412
 413 void
 414 i915UpdateTextureState(struct intel_context *intel)
 415 {
 416    bool ok = true;
 417    GLuint i;
 418
 419    for (i = 0; i < I915_TEX_UNITS && ok; i++) {
 420       if (intel->ctx.Texture.Unit[i]._Current) {
 421          switch (intel->ctx.Texture.Unit[i]._Current->Target) {
 422          case GL_TEXTURE_1D:
 423          case GL_TEXTURE_2D:
 424          case GL_TEXTURE_CUBE_MAP:
 425          case GL_TEXTURE_3D:
 426             ok = i915_update_tex_unit(intel, i, SS3_NORMALIZED_COORDS);
 427             break;
 428          case GL_TEXTURE_RECTANGLE:
 429             ok = i915_update_tex_unit(intel, i, 0);
 430             break;
 431          default:
 432             ok = false;
 433             break;
 434          }
 435       } else {
 436          struct i915_context *i915 = i915_context(&intel->ctx);
 437          if (i915->state.active & I915_UPLOAD_TEX(i))
 438             I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(i), false);
 439
 440          if (i915->state.tex_buffer[i] != NULL) {
 441             drm_intel_bo_unreference(i915->state.tex_buffer[i]);
 442             i915->state.tex_buffer[i] = NULL;
 443          }
 444       }
 445    }
 446
 447    FALLBACK(intel, I915_FALLBACK_TEXTURE, !ok);
 448 }