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/texformat.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(GLuint 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_YCBCR_REV:
  64       return (MAPSURF_422 | MT_422_YCRCB_NORMAL);
  65    case MESA_FORMAT_YCBCR:
  66       return (MAPSURF_422 | MT_422_YCRCB_SWAPY);
  67    case MESA_FORMAT_RGB_FXT1:
  68    case MESA_FORMAT_RGBA_FXT1:
  69       return (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
  70    case MESA_FORMAT_Z16:
  71       if (DepthMode == GL_ALPHA)
  72           return (MAPSURF_16BIT | MT_16BIT_A16);
  73       else if (DepthMode == GL_INTENSITY)
  74           return (MAPSURF_16BIT | MT_16BIT_I16);
  75       else
  76           return (MAPSURF_16BIT | MT_16BIT_L16);
  77    case MESA_FORMAT_RGBA_DXT1:
  78    case MESA_FORMAT_RGB_DXT1:
  79       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
  80    case MESA_FORMAT_RGBA_DXT3:
  81       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
  82    case MESA_FORMAT_RGBA_DXT5:
  83       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
  84    case MESA_FORMAT_S8_Z24:
  85       return (MAPSURF_32BIT | MT_32BIT_xI824);
  86    default:
  87       fprintf(stderr, "%s: bad image format %x\n", __FUNCTION__, mesa_format);
  88       abort();
  89       return 0;
  90    }
  91 }
  92
  93
  94
  95
  96 /* The i915 (and related graphics cores) do not support GL_CLAMP.  The
  97  * Intel drivers for "other operating systems" implement GL_CLAMP as
  98  * GL_CLAMP_TO_EDGE, so the same is done here.
  99  */
 100 static GLuint
 101 translate_wrap_mode(GLenum wrap)
 102 {
 103    switch (wrap) {
 104    case GL_REPEAT:
 105       return TEXCOORDMODE_WRAP;
 106    case GL_CLAMP:
 107       return TEXCOORDMODE_CLAMP_EDGE;   /* not quite correct */
 108    case GL_CLAMP_TO_EDGE:
 109       return TEXCOORDMODE_CLAMP_EDGE;
 110    case GL_CLAMP_TO_BORDER:
 111       return TEXCOORDMODE_CLAMP_BORDER;
 112    case GL_MIRRORED_REPEAT:
 113       return TEXCOORDMODE_MIRROR;
 114    default:
 115       return TEXCOORDMODE_WRAP;
 116    }
 117 }
 118
 119
 120
 121 /* Recalculate all state from scratch.  Perhaps not the most
 122  * efficient, but this has gotten complex enough that we need
 123  * something which is understandable and reliable.
 124  */
 125 static GLboolean
 126 i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
 127 {
 128    GLcontext *ctx = &intel->ctx;
 129    struct i915_context *i915 = i915_context(ctx);
 130    struct gl_texture_unit *tUnit = &ctx->Texture.Unit[unit];
 131    struct gl_texture_object *tObj = tUnit->_Current;
 132    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 133    struct gl_texture_image *firstImage;
 134    GLuint *state = i915->state.Tex[unit], format, pitch;
 135    GLint lodbias, aniso = 0;
 136    GLubyte border[4];
 137
 138    memset(state, 0, sizeof(state));
 139
 140    /*We need to refcount these. */
 141
 142    if (i915->state.tex_buffer[unit] != NULL) {
 143        dri_bo_unreference(i915->state.tex_buffer[unit]);
 144        i915->state.tex_buffer[unit] = NULL;
 145    }
 146
 147    if (!intelObj->imageOverride && !intel_finalize_mipmap_tree(intel, unit))
 148       return GL_FALSE;
 149
 150    /* Get first image here, since intelObj->firstLevel will get set in
 151     * the intel_finalize_mipmap_tree() call above.
 152     */
 153    firstImage = tObj->Image[0][intelObj->firstLevel];
 154
 155    if (intelObj->imageOverride) {
 156       i915->state.tex_buffer[unit] = NULL;
 157       i915->state.tex_offset[unit] = intelObj->textureOffset;
 158
 159       switch (intelObj->depthOverride) {
 160       case 32:
 161          format = MAPSURF_32BIT | MT_32BIT_ARGB8888;
 162          break;
 163       case 24:
 164       default:
 165          format = MAPSURF_32BIT | MT_32BIT_XRGB8888;
 166          break;
 167       case 16:
 168          format = MAPSURF_16BIT | MT_16BIT_RGB565;
 169          break;
 170       }
 171
 172       pitch = intelObj->pitchOverride;
 173    } else {
 174       dri_bo_reference(intelObj->mt->region->buffer);
 175       i915->state.tex_buffer[unit] = intelObj->mt->region->buffer;
 176       i915->state.tex_offset[unit] =  intel_miptree_image_offset(intelObj->mt,
 177                                                                  0, intelObj->
 178                                                                  firstLevel);
 179
 180       format = translate_texture_format(firstImage->TexFormat->MesaFormat,
 181                                         firstImage->InternalFormat,
 182                                         tObj->DepthMode);
 183       pitch = intelObj->mt->pitch * intelObj->mt->cpp;
 184    }
 185
 186    state[I915_TEXREG_MS3] =
 187       (((firstImage->Height - 1) << MS3_HEIGHT_SHIFT) |
 188        ((firstImage->Width - 1) << MS3_WIDTH_SHIFT) | format |
 189        MS3_USE_FENCE_REGS);
 190
 191    state[I915_TEXREG_MS4] =
 192      ((((pitch / 4) - 1) << MS4_PITCH_SHIFT) | MS4_CUBE_FACE_ENA_MASK |
 193        ((((intelObj->lastLevel - intelObj->firstLevel) * 4)) <<
 194         MS4_MAX_LOD_SHIFT) | ((firstImage->Depth - 1) <<
 195                               MS4_VOLUME_DEPTH_SHIFT));
 196
 197
 198    {
 199       GLuint minFilt, mipFilt, magFilt;
 200
 201       switch (tObj->MinFilter) {
 202       case GL_NEAREST:
 203          minFilt = FILTER_NEAREST;
 204          mipFilt = MIPFILTER_NONE;
 205          break;
 206       case GL_LINEAR:
 207          minFilt = FILTER_LINEAR;
 208          mipFilt = MIPFILTER_NONE;
 209          break;
 210       case GL_NEAREST_MIPMAP_NEAREST:
 211          minFilt = FILTER_NEAREST;
 212          mipFilt = MIPFILTER_NEAREST;
 213          break;
 214       case GL_LINEAR_MIPMAP_NEAREST:
 215          minFilt = FILTER_LINEAR;
 216          mipFilt = MIPFILTER_NEAREST;
 217          break;
 218       case GL_NEAREST_MIPMAP_LINEAR:
 219          minFilt = FILTER_NEAREST;
 220          mipFilt = MIPFILTER_LINEAR;
 221          break;
 222       case GL_LINEAR_MIPMAP_LINEAR:
 223          minFilt = FILTER_LINEAR;
 224          mipFilt = MIPFILTER_LINEAR;
 225          break;
 226       default:
 227          return GL_FALSE;
 228       }
 229
 230       if (tObj->MaxAnisotropy > 1.0) {
 231          minFilt = FILTER_ANISOTROPIC;
 232          magFilt = FILTER_ANISOTROPIC;
 233          if (tObj->MaxAnisotropy > 2.0)
 234             aniso = SS2_MAX_ANISO_4;
 235          else
 236             aniso = SS2_MAX_ANISO_2;
 237       }
 238       else {
 239          switch (tObj->MagFilter) {
 240          case GL_NEAREST:
 241             magFilt = FILTER_NEAREST;
 242             break;
 243          case GL_LINEAR:
 244             magFilt = FILTER_LINEAR;
 245             break;
 246          default:
 247             return GL_FALSE;
 248          }
 249       }
 250
 251       lodbias = (int) ((tUnit->LodBias + tObj->LodBias) * 16.0);
 252       if (lodbias < -256)
 253           lodbias = -256;
 254       if (lodbias > 255)
 255           lodbias = 255;
 256       state[I915_TEXREG_SS2] = ((lodbias << SS2_LOD_BIAS_SHIFT) &
 257                                 SS2_LOD_BIAS_MASK);
 258
 259       /* YUV conversion:
 260        */
 261       if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
 262           firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
 263          state[I915_TEXREG_SS2] |= SS2_COLORSPACE_CONVERSION;
 264
 265       /* Shadow:
 266        */
 267       if (tObj->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB &&
 268           tObj->Target != GL_TEXTURE_3D) {
 269          if (tObj->Target == GL_TEXTURE_1D)
 270             return GL_FALSE;
 271
 272          state[I915_TEXREG_SS2] |=
 273             (SS2_SHADOW_ENABLE |
 274              intel_translate_shadow_compare_func(tObj->CompareFunc));
 275
 276          minFilt = FILTER_4X4_FLAT;
 277          magFilt = FILTER_4X4_FLAT;
 278       }
 279
 280       state[I915_TEXREG_SS2] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
 281                                  (mipFilt << SS2_MIP_FILTER_SHIFT) |
 282                                  (magFilt << SS2_MAG_FILTER_SHIFT) |
 283                                  aniso);
 284    }
 285
 286    {
 287       GLenum ws = tObj->WrapS;
 288       GLenum wt = tObj->WrapT;
 289       GLenum wr = tObj->WrapR;
 290
 291
 292       /* 3D textures don't seem to respect the border color.
 293        * Fallback if there's ever a danger that they might refer to
 294        * it.
 295        *
 296        * Effectively this means fallback on 3D clamp or
 297        * clamp_to_border.
 298        */
 299       if (tObj->Target == GL_TEXTURE_3D &&
 300           (tObj->MinFilter != GL_NEAREST ||
 301            tObj->MagFilter != GL_NEAREST) &&
 302           (ws == GL_CLAMP ||
 303            wt == GL_CLAMP ||
 304            wr == GL_CLAMP ||
 305            ws == GL_CLAMP_TO_BORDER ||
 306            wt == GL_CLAMP_TO_BORDER || wr == GL_CLAMP_TO_BORDER))
 307          return GL_FALSE;
 308
 309       /* Only support TEXCOORDMODE_CLAMP_EDGE and TEXCOORDMODE_CUBE (not
 310        * used) when using cube map texture coordinates
 311        */
 312       if (tObj->Target == GL_TEXTURE_CUBE_MAP_ARB &&
 313           (((ws != GL_CLAMP) && (ws != GL_CLAMP_TO_EDGE)) ||
 314            ((wt != GL_CLAMP) && (wt != GL_CLAMP_TO_EDGE))))
 315           return GL_FALSE;
 316
 317       state[I915_TEXREG_SS3] = ss3;     /* SS3_NORMALIZED_COORDS */
 318
 319       state[I915_TEXREG_SS3] |=
 320          ((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
 321           (translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
 322           (translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT));
 323
 324       state[I915_TEXREG_SS3] |= (unit << SS3_TEXTUREMAP_INDEX_SHIFT);
 325    }
 326
 327    /* convert border color from float to ubyte */
 328    CLAMPED_FLOAT_TO_UBYTE(border[0], tObj->BorderColor[0]);
 329    CLAMPED_FLOAT_TO_UBYTE(border[1], tObj->BorderColor[1]);
 330    CLAMPED_FLOAT_TO_UBYTE(border[2], tObj->BorderColor[2]);
 331    CLAMPED_FLOAT_TO_UBYTE(border[3], tObj->BorderColor[3]);
 332
 333    if (firstImage->_BaseFormat == GL_DEPTH_COMPONENT) {
 334       /* GL specs that border color for depth textures is taken from the
 335        * R channel, while the hardware uses A.  Spam R into all the channels
 336        * for safety.
 337        */
 338       state[I915_TEXREG_SS4] = INTEL_PACKCOLOR8888(border[0],
 339                                                    border[0],
 340                                                    border[0],
 341                                                    border[0]);
 342    } else {
 343       state[I915_TEXREG_SS4] = INTEL_PACKCOLOR8888(border[0],
 344                                                    border[1],
 345                                                    border[2],
 346                                                    border[3]);
 347    }
 348
 349
 350    I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), GL_TRUE);
 351    /* memcmp was already disabled, but definitely won't work as the
 352     * region might now change and that wouldn't be detected:
 353     */
 354    I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 355
 356
 357 #if 0
 358    DBG(TEXTURE, "state[I915_TEXREG_SS2] = 0x%x\n", state[I915_TEXREG_SS2]);
 359    DBG(TEXTURE, "state[I915_TEXREG_SS3] = 0x%x\n", state[I915_TEXREG_SS3]);
 360    DBG(TEXTURE, "state[I915_TEXREG_SS4] = 0x%x\n", state[I915_TEXREG_SS4]);
 361    DBG(TEXTURE, "state[I915_TEXREG_MS2] = 0x%x\n", state[I915_TEXREG_MS2]);
 362    DBG(TEXTURE, "state[I915_TEXREG_MS3] = 0x%x\n", state[I915_TEXREG_MS3]);
 363    DBG(TEXTURE, "state[I915_TEXREG_MS4] = 0x%x\n", state[I915_TEXREG_MS4]);
 364 #endif
 365
 366    return GL_TRUE;
 367 }
 368
 369
 370
 371
 372 void
 373 i915UpdateTextureState(struct intel_context *intel)
 374 {
 375    GLboolean ok = GL_TRUE;
 376    GLuint i;
 377
 378    for (i = 0; i < I915_TEX_UNITS && ok; i++) {
 379       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 380       case TEXTURE_1D_BIT:
 381       case TEXTURE_2D_BIT:
 382       case TEXTURE_CUBE_BIT:
 383       case TEXTURE_3D_BIT:
 384          ok = i915_update_tex_unit(intel, i, SS3_NORMALIZED_COORDS);
 385          break;
 386       case TEXTURE_RECT_BIT:
 387          ok = i915_update_tex_unit(intel, i, 0);
 388          break;
 389       case 0:{
 390             struct i915_context *i915 = i915_context(&intel->ctx);
 391             if (i915->state.active & I915_UPLOAD_TEX(i))
 392                I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(i), GL_FALSE);
 393
 394             if (i915->state.tex_buffer[i] != NULL) {
 395                dri_bo_unreference(i915->state.tex_buffer[i]);
 396                i915->state.tex_buffer[i] = NULL;
 397             }
 398
 399             break;
 400          }
 401       default:
 402          ok = GL_FALSE;
 403          break;
 404       }
 405    }
 406
 407    FALLBACK(intel, I915_FALLBACK_TEXTURE, !ok);
 408 }