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;
 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       dri_bo_reference(intelObj->mt->region->buffer);
 174       i915->state.tex_buffer[unit] = intelObj->mt->region->buffer;
 175       i915->state.tex_offset[unit] =  intel_miptree_image_offset(intelObj->mt,
 176                                                                  0, intelObj->
 177                                                                  firstLevel);
 178
 179       format = translate_texture_format(firstImage->TexFormat->MesaFormat,
 180                                         firstImage->InternalFormat,
 181                                         tObj->DepthMode);
 182       pitch = intelObj->mt->pitch * intelObj->mt->cpp;
 183    }
 184
 185    state[I915_TEXREG_MS3] =
 186       (((firstImage->Height - 1) << MS3_HEIGHT_SHIFT) |
 187        ((firstImage->Width - 1) << MS3_WIDTH_SHIFT) | format |
 188        MS3_USE_FENCE_REGS);
 189
 190    state[I915_TEXREG_MS4] =
 191      ((((pitch / 4) - 1) << MS4_PITCH_SHIFT) | MS4_CUBE_FACE_ENA_MASK |
 192        ((((intelObj->lastLevel - intelObj->firstLevel) * 4)) <<
 193         MS4_MAX_LOD_SHIFT) | ((firstImage->Depth - 1) <<
 194                               MS4_VOLUME_DEPTH_SHIFT));
 195
 196
 197    {
 198       GLuint minFilt, mipFilt, magFilt;
 199
 200       switch (tObj->MinFilter) {
 201       case GL_NEAREST:
 202          minFilt = FILTER_NEAREST;
 203          mipFilt = MIPFILTER_NONE;
 204          break;
 205       case GL_LINEAR:
 206          minFilt = FILTER_LINEAR;
 207          mipFilt = MIPFILTER_NONE;
 208          break;
 209       case GL_NEAREST_MIPMAP_NEAREST:
 210          minFilt = FILTER_NEAREST;
 211          mipFilt = MIPFILTER_NEAREST;
 212          break;
 213       case GL_LINEAR_MIPMAP_NEAREST:
 214          minFilt = FILTER_LINEAR;
 215          mipFilt = MIPFILTER_NEAREST;
 216          break;
 217       case GL_NEAREST_MIPMAP_LINEAR:
 218          minFilt = FILTER_NEAREST;
 219          mipFilt = MIPFILTER_LINEAR;
 220          break;
 221       case GL_LINEAR_MIPMAP_LINEAR:
 222          minFilt = FILTER_LINEAR;
 223          mipFilt = MIPFILTER_LINEAR;
 224          break;
 225       default:
 226          return GL_FALSE;
 227       }
 228
 229       if (tObj->MaxAnisotropy > 1.0) {
 230          minFilt = FILTER_ANISOTROPIC;
 231          magFilt = FILTER_ANISOTROPIC;
 232       }
 233       else {
 234          switch (tObj->MagFilter) {
 235          case GL_NEAREST:
 236             magFilt = FILTER_NEAREST;
 237             break;
 238          case GL_LINEAR:
 239             magFilt = FILTER_LINEAR;
 240             break;
 241          default:
 242             return GL_FALSE;
 243          }
 244       }
 245
 246       lodbias = (int) ((tUnit->LodBias + tObj->LodBias) * 16.0);
 247       if (lodbias < -256)
 248           lodbias = -256;
 249       if (lodbias > 255)
 250           lodbias = 255;
 251       state[I915_TEXREG_SS2] = ((lodbias << SS2_LOD_BIAS_SHIFT) &
 252                                 SS2_LOD_BIAS_MASK);
 253
 254       /* YUV conversion:
 255        */
 256       if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
 257           firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
 258          state[I915_TEXREG_SS2] |= SS2_COLORSPACE_CONVERSION;
 259
 260       /* Shadow:
 261        */
 262       if (tObj->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB &&
 263           tObj->Target != GL_TEXTURE_3D) {
 264          if (tObj->Target == GL_TEXTURE_1D)
 265             return GL_FALSE;
 266
 267          state[I915_TEXREG_SS2] |=
 268             (SS2_SHADOW_ENABLE |
 269              intel_translate_shadow_compare_func(tObj->CompareFunc));
 270
 271          minFilt = FILTER_4X4_FLAT;
 272          magFilt = FILTER_4X4_FLAT;
 273       }
 274
 275       state[I915_TEXREG_SS2] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
 276                                  (mipFilt << SS2_MIP_FILTER_SHIFT) |
 277                                  (magFilt << SS2_MAG_FILTER_SHIFT));
 278    }
 279
 280    {
 281       GLenum ws = tObj->WrapS;
 282       GLenum wt = tObj->WrapT;
 283       GLenum wr = tObj->WrapR;
 284
 285
 286       /* 3D textures don't seem to respect the border color.
 287        * Fallback if there's ever a danger that they might refer to
 288        * it.
 289        *
 290        * Effectively this means fallback on 3D clamp or
 291        * clamp_to_border.
 292        */
 293       if (tObj->Target == GL_TEXTURE_3D &&
 294           (tObj->MinFilter != GL_NEAREST ||
 295            tObj->MagFilter != GL_NEAREST) &&
 296           (ws == GL_CLAMP ||
 297            wt == GL_CLAMP ||
 298            wr == GL_CLAMP ||
 299            ws == GL_CLAMP_TO_BORDER ||
 300            wt == GL_CLAMP_TO_BORDER || wr == GL_CLAMP_TO_BORDER))
 301          return GL_FALSE;
 302
 303       /* Only support TEXCOORDMODE_CLAMP_EDGE and TEXCOORDMODE_CUBE (not
 304        * used) when using cube map texture coordinates
 305        */
 306       if (tObj->Target == GL_TEXTURE_CUBE_MAP_ARB &&
 307           (((ws != GL_CLAMP) && (ws != GL_CLAMP_TO_EDGE)) ||
 308            ((wt != GL_CLAMP) && (wt != GL_CLAMP_TO_EDGE))))
 309           return GL_FALSE;
 310
 311       state[I915_TEXREG_SS3] = ss3;     /* SS3_NORMALIZED_COORDS */
 312
 313       state[I915_TEXREG_SS3] |=
 314          ((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
 315           (translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
 316           (translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT));
 317
 318       state[I915_TEXREG_SS3] |= (unit << SS3_TEXTUREMAP_INDEX_SHIFT);
 319    }
 320
 321
 322    if (firstImage->_BaseFormat == GL_DEPTH_COMPONENT) {
 323       /* GL specs that border color for depth textures is taken from the
 324        * R channel, while the hardware uses A.  Spam R into all the channels
 325        * for safety.
 326        */
 327       state[I915_TEXREG_SS4] = INTEL_PACKCOLOR8888(tObj->_BorderChan[0],
 328                                                    tObj->_BorderChan[0],
 329                                                    tObj->_BorderChan[0],
 330                                                    tObj->_BorderChan[0]);
 331    } else {
 332       state[I915_TEXREG_SS4] = INTEL_PACKCOLOR8888(tObj->_BorderChan[0],
 333                                                    tObj->_BorderChan[1],
 334                                                    tObj->_BorderChan[2],
 335                                                    tObj->_BorderChan[3]);
 336    }
 337
 338
 339    I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), GL_TRUE);
 340    /* memcmp was already disabled, but definitely won't work as the
 341     * region might now change and that wouldn't be detected:
 342     */
 343    I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 344
 345
 346 #if 0
 347    DBG(TEXTURE, "state[I915_TEXREG_SS2] = 0x%x\n", state[I915_TEXREG_SS2]);
 348    DBG(TEXTURE, "state[I915_TEXREG_SS3] = 0x%x\n", state[I915_TEXREG_SS3]);
 349    DBG(TEXTURE, "state[I915_TEXREG_SS4] = 0x%x\n", state[I915_TEXREG_SS4]);
 350    DBG(TEXTURE, "state[I915_TEXREG_MS2] = 0x%x\n", state[I915_TEXREG_MS2]);
 351    DBG(TEXTURE, "state[I915_TEXREG_MS3] = 0x%x\n", state[I915_TEXREG_MS3]);
 352    DBG(TEXTURE, "state[I915_TEXREG_MS4] = 0x%x\n", state[I915_TEXREG_MS4]);
 353 #endif
 354
 355    return GL_TRUE;
 356 }
 357
 358
 359
 360
 361 void
 362 i915UpdateTextureState(struct intel_context *intel)
 363 {
 364    GLboolean ok = GL_TRUE;
 365    GLuint i;
 366
 367    for (i = 0; i < I915_TEX_UNITS && ok; i++) {
 368       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 369       case TEXTURE_1D_BIT:
 370       case TEXTURE_2D_BIT:
 371       case TEXTURE_CUBE_BIT:
 372       case TEXTURE_3D_BIT:
 373          ok = i915_update_tex_unit(intel, i, SS3_NORMALIZED_COORDS);
 374          break;
 375       case TEXTURE_RECT_BIT:
 376          ok = i915_update_tex_unit(intel, i, 0);
 377          break;
 378       case 0:{
 379             struct i915_context *i915 = i915_context(&intel->ctx);
 380             if (i915->state.active & I915_UPLOAD_TEX(i))
 381                I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(i), GL_FALSE);
 382
 383             if (i915->state.tex_buffer[i] != NULL) {
 384                dri_bo_unreference(i915->state.tex_buffer[i]);
 385                i915->state.tex_buffer[i] = NULL;
 386             }
 387
 388             break;
 389          }
 390       default:
 391          ok = GL_FALSE;
 392          break;
 393       }
 394    }
 395
 396    FALLBACK(intel, I915_FALLBACK_TEXTURE, !ok);
 397 }