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       return MAPSURF_32BIT | MT_32BIT_ARGB8888;
  60    case MESA_FORMAT_XRGB8888:
  61       return MAPSURF_32BIT | MT_32BIT_XRGB8888;
  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       if (DepthMode == GL_ALPHA)
  85          return (MAPSURF_32BIT | MT_32BIT_x8A24);
  86       else if (DepthMode == GL_INTENSITY)
  87          return (MAPSURF_32BIT | MT_32BIT_x8I24);
  88       else
  89          return (MAPSURF_32BIT | MT_32BIT_x8L24);
  90    default:
  91       fprintf(stderr, "%s: bad image format %x\n", __FUNCTION__, mesa_format);
  92       abort();
  93       return 0;
  94    }
  95 }
  96
  97
  98
  99
 100 /* The i915 (and related graphics cores) do not support GL_CLAMP.  The
 101  * Intel drivers for "other operating systems" implement GL_CLAMP as
 102  * GL_CLAMP_TO_EDGE, so the same is done here.
 103  */
 104 static GLuint
 105 translate_wrap_mode(GLenum wrap)
 106 {
 107    switch (wrap) {
 108    case GL_REPEAT:
 109       return TEXCOORDMODE_WRAP;
 110    case GL_CLAMP:
 111       return TEXCOORDMODE_CLAMP_EDGE;   /* not quite correct */
 112    case GL_CLAMP_TO_EDGE:
 113       return TEXCOORDMODE_CLAMP_EDGE;
 114    case GL_CLAMP_TO_BORDER:
 115       return TEXCOORDMODE_CLAMP_BORDER;
 116    case GL_MIRRORED_REPEAT:
 117       return TEXCOORDMODE_MIRROR;
 118    default:
 119       return TEXCOORDMODE_WRAP;
 120    }
 121 }
 122
 123
 124
 125 /* Recalculate all state from scratch.  Perhaps not the most
 126  * efficient, but this has gotten complex enough that we need
 127  * something which is understandable and reliable.
 128  */
 129 static GLboolean
 130 i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
 131 {
 132    GLcontext *ctx = &intel->ctx;
 133    struct i915_context *i915 = i915_context(ctx);
 134    struct gl_texture_unit *tUnit = &ctx->Texture.Unit[unit];
 135    struct gl_texture_object *tObj = tUnit->_Current;
 136    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 137    struct gl_texture_image *firstImage;
 138    GLuint *state = i915->state.Tex[unit], format, pitch;
 139    GLint lodbias, aniso = 0;
 140    GLubyte border[4];
 141    GLfloat maxlod;
 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       dri_bo_reference(intelObj->mt->region->buffer);
 180       i915->state.tex_buffer[unit] = intelObj->mt->region->buffer;
 181       i915->state.tex_offset[unit] = 0; /* Always the origin of the miptree */
 182
 183       format = translate_texture_format(firstImage->TexFormat,
 184                                         firstImage->InternalFormat,
 185                                         tObj->DepthMode);
 186       pitch = intelObj->mt->pitch * intelObj->mt->cpp;
 187    }
 188
 189    state[I915_TEXREG_MS3] =
 190       (((firstImage->Height - 1) << MS3_HEIGHT_SHIFT) |
 191        ((firstImage->Width - 1) << MS3_WIDTH_SHIFT) | format);
 192
 193    if (intelObj->mt->region->tiling != I915_TILING_NONE) {
 194       state[I915_TEXREG_MS3] |= MS3_TILED_SURFACE;
 195       if (intelObj->mt->region->tiling == I915_TILING_Y)
 196          state[I915_TEXREG_MS3] |= MS3_TILE_WALK;
 197    }
 198
 199    /* We get one field with fraction bits to cover the maximum addressable (smallest
 200     * resolution) LOD.  Use it to cover both MAX_LEVEL and MAX_LOD.
 201     */
 202    maxlod = MIN2(tObj->MaxLod, tObj->MaxLevel - tObj->BaseLevel);
 203    state[I915_TEXREG_MS4] =
 204       ((((pitch / 4) - 1) << MS4_PITCH_SHIFT) |
 205        MS4_CUBE_FACE_ENA_MASK |
 206        (U_FIXED(CLAMP(maxlod, 0.0, 11.0), 2) << MS4_MAX_LOD_SHIFT) |
 207        ((firstImage->Depth - 1) << MS4_VOLUME_DEPTH_SHIFT));
 208
 209
 210    {
 211       GLuint minFilt, mipFilt, magFilt;
 212
 213       switch (tObj->MinFilter) {
 214       case GL_NEAREST:
 215          minFilt = FILTER_NEAREST;
 216          mipFilt = MIPFILTER_NONE;
 217          break;
 218       case GL_LINEAR:
 219          minFilt = FILTER_LINEAR;
 220          mipFilt = MIPFILTER_NONE;
 221          break;
 222       case GL_NEAREST_MIPMAP_NEAREST:
 223          minFilt = FILTER_NEAREST;
 224          mipFilt = MIPFILTER_NEAREST;
 225          break;
 226       case GL_LINEAR_MIPMAP_NEAREST:
 227          minFilt = FILTER_LINEAR;
 228          mipFilt = MIPFILTER_NEAREST;
 229          break;
 230       case GL_NEAREST_MIPMAP_LINEAR:
 231          minFilt = FILTER_NEAREST;
 232          mipFilt = MIPFILTER_LINEAR;
 233          break;
 234       case GL_LINEAR_MIPMAP_LINEAR:
 235          minFilt = FILTER_LINEAR;
 236          mipFilt = MIPFILTER_LINEAR;
 237          break;
 238       default:
 239          return GL_FALSE;
 240       }
 241
 242       if (tObj->MaxAnisotropy > 1.0) {
 243          minFilt = FILTER_ANISOTROPIC;
 244          magFilt = FILTER_ANISOTROPIC;
 245          if (tObj->MaxAnisotropy > 2.0)
 246             aniso = SS2_MAX_ANISO_4;
 247          else
 248             aniso = SS2_MAX_ANISO_2;
 249       }
 250       else {
 251          switch (tObj->MagFilter) {
 252          case GL_NEAREST:
 253             magFilt = FILTER_NEAREST;
 254             break;
 255          case GL_LINEAR:
 256             magFilt = FILTER_LINEAR;
 257             break;
 258          default:
 259             return GL_FALSE;
 260          }
 261       }
 262
 263       lodbias = (int) ((tUnit->LodBias + tObj->LodBias) * 16.0);
 264       if (lodbias < -256)
 265           lodbias = -256;
 266       if (lodbias > 255)
 267           lodbias = 255;
 268       state[I915_TEXREG_SS2] = ((lodbias << SS2_LOD_BIAS_SHIFT) &
 269                                 SS2_LOD_BIAS_MASK);
 270
 271       /* YUV conversion:
 272        */
 273       if (firstImage->TexFormat == MESA_FORMAT_YCBCR ||
 274           firstImage->TexFormat == MESA_FORMAT_YCBCR_REV)
 275          state[I915_TEXREG_SS2] |= SS2_COLORSPACE_CONVERSION;
 276
 277       /* Shadow:
 278        */
 279       if (tObj->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB &&
 280           tObj->Target != GL_TEXTURE_3D) {
 281          if (tObj->Target == GL_TEXTURE_1D)
 282             return GL_FALSE;
 283
 284          state[I915_TEXREG_SS2] |=
 285             (SS2_SHADOW_ENABLE |
 286              intel_translate_shadow_compare_func(tObj->CompareFunc));
 287
 288          minFilt = FILTER_4X4_FLAT;
 289          magFilt = FILTER_4X4_FLAT;
 290       }
 291
 292       state[I915_TEXREG_SS2] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
 293                                  (mipFilt << SS2_MIP_FILTER_SHIFT) |
 294                                  (magFilt << SS2_MAG_FILTER_SHIFT) |
 295                                  aniso);
 296    }
 297
 298    {
 299       GLenum ws = tObj->WrapS;
 300       GLenum wt = tObj->WrapT;
 301       GLenum wr = tObj->WrapR;
 302
 303       /* We program 1D textures as 2D textures, so the 2D texcoord could
 304        * result in sampling border values if we don't set the T wrap to
 305        * repeat.
 306        */
 307       if (tObj->Target == GL_TEXTURE_1D)
 308          wt = GL_REPEAT;
 309
 310       /* 3D textures don't seem to respect the border color.
 311        * Fallback if there's ever a danger that they might refer to
 312        * it.
 313        *
 314        * Effectively this means fallback on 3D clamp or
 315        * clamp_to_border.
 316        */
 317       if (tObj->Target == GL_TEXTURE_3D &&
 318           (tObj->MinFilter != GL_NEAREST ||
 319            tObj->MagFilter != GL_NEAREST) &&
 320           (ws == GL_CLAMP ||
 321            wt == GL_CLAMP ||
 322            wr == GL_CLAMP ||
 323            ws == GL_CLAMP_TO_BORDER ||
 324            wt == GL_CLAMP_TO_BORDER || wr == GL_CLAMP_TO_BORDER))
 325          return GL_FALSE;
 326
 327       /* Only support TEXCOORDMODE_CLAMP_EDGE and TEXCOORDMODE_CUBE (not
 328        * used) when using cube map texture coordinates
 329        */
 330       if (tObj->Target == GL_TEXTURE_CUBE_MAP_ARB &&
 331           (((ws != GL_CLAMP) && (ws != GL_CLAMP_TO_EDGE)) ||
 332            ((wt != GL_CLAMP) && (wt != GL_CLAMP_TO_EDGE))))
 333           return GL_FALSE;
 334
 335       state[I915_TEXREG_SS3] = ss3;     /* SS3_NORMALIZED_COORDS */
 336
 337       state[I915_TEXREG_SS3] |=
 338          ((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
 339           (translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
 340           (translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT));
 341
 342       state[I915_TEXREG_SS3] |= (unit << SS3_TEXTUREMAP_INDEX_SHIFT);
 343       state[I915_TEXREG_SS3] |= (U_FIXED(CLAMP(tObj->MinLod, 0.0, 11.0), 4) <<
 344                                  SS3_MIN_LOD_SHIFT);
 345
 346    }
 347
 348    /* convert border color from float to ubyte */
 349    CLAMPED_FLOAT_TO_UBYTE(border[0], tObj->BorderColor[0]);
 350    CLAMPED_FLOAT_TO_UBYTE(border[1], tObj->BorderColor[1]);
 351    CLAMPED_FLOAT_TO_UBYTE(border[2], tObj->BorderColor[2]);
 352    CLAMPED_FLOAT_TO_UBYTE(border[3], tObj->BorderColor[3]);
 353
 354    if (firstImage->_BaseFormat == GL_DEPTH_COMPONENT) {
 355       /* GL specs that border color for depth textures is taken from the
 356        * R channel, while the hardware uses A.  Spam R into all the channels
 357        * for safety.
 358        */
 359       state[I915_TEXREG_SS4] = INTEL_PACKCOLOR8888(border[0],
 360                                                    border[0],
 361                                                    border[0],
 362                                                    border[0]);
 363    } else {
 364       state[I915_TEXREG_SS4] = INTEL_PACKCOLOR8888(border[0],
 365                                                    border[1],
 366                                                    border[2],
 367                                                    border[3]);
 368    }
 369
 370
 371    I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), GL_TRUE);
 372    /* memcmp was already disabled, but definitely won't work as the
 373     * region might now change and that wouldn't be detected:
 374     */
 375    I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 376
 377
 378 #if 0
 379    DBG(TEXTURE, "state[I915_TEXREG_SS2] = 0x%x\n", state[I915_TEXREG_SS2]);
 380    DBG(TEXTURE, "state[I915_TEXREG_SS3] = 0x%x\n", state[I915_TEXREG_SS3]);
 381    DBG(TEXTURE, "state[I915_TEXREG_SS4] = 0x%x\n", state[I915_TEXREG_SS4]);
 382    DBG(TEXTURE, "state[I915_TEXREG_MS2] = 0x%x\n", state[I915_TEXREG_MS2]);
 383    DBG(TEXTURE, "state[I915_TEXREG_MS3] = 0x%x\n", state[I915_TEXREG_MS3]);
 384    DBG(TEXTURE, "state[I915_TEXREG_MS4] = 0x%x\n", state[I915_TEXREG_MS4]);
 385 #endif
 386
 387    return GL_TRUE;
 388 }
 389
 390
 391
 392
 393 void
 394 i915UpdateTextureState(struct intel_context *intel)
 395 {
 396    GLboolean ok = GL_TRUE;
 397    GLuint i;
 398
 399    for (i = 0; i < I915_TEX_UNITS && ok; i++) {
 400       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 401       case TEXTURE_1D_BIT:
 402       case TEXTURE_2D_BIT:
 403       case TEXTURE_CUBE_BIT:
 404       case TEXTURE_3D_BIT:
 405          ok = i915_update_tex_unit(intel, i, SS3_NORMALIZED_COORDS);
 406          break;
 407       case TEXTURE_RECT_BIT:
 408          ok = i915_update_tex_unit(intel, i, 0);
 409          break;
 410       case 0:{
 411             struct i915_context *i915 = i915_context(&intel->ctx);
 412             if (i915->state.active & I915_UPLOAD_TEX(i))
 413                I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(i), GL_FALSE);
 414
 415             if (i915->state.tex_buffer[i] != NULL) {
 416                dri_bo_unreference(i915->state.tex_buffer[i]);
 417                i915->state.tex_buffer[i] = NULL;
 418             }
 419
 420             break;
 421          }
 422       default:
 423          ok = GL_FALSE;
 424          break;
 425       }
 426    }
 427
 428    FALLBACK(intel, I915_FALLBACK_TEXTURE, !ok);
 429 }