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 "mtypes.h"
  29 #include "enums.h"
  30 #include "texformat.h"
  31 #include "dri_bufmgr.h"
  32
  33 #include "intel_mipmap_tree.h"
  34 #include "intel_tex.h"
  35
  36 #include "i915_context.h"
  37 #include "i915_reg.h"
  38
  39
  40 static GLuint
  41 translate_texture_format(GLuint mesa_format, 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_YCBCR_REV:
  61       return (MAPSURF_422 | MT_422_YCRCB_NORMAL);
  62    case MESA_FORMAT_YCBCR:
  63       return (MAPSURF_422 | MT_422_YCRCB_SWAPY);
  64    case MESA_FORMAT_RGB_FXT1:
  65    case MESA_FORMAT_RGBA_FXT1:
  66       return (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
  67    case MESA_FORMAT_Z16:
  68       return (MAPSURF_16BIT | (DepthMode==GL_ALPHA?MT_16BIT_A16:MT_16BIT_L16));
  69    case MESA_FORMAT_RGBA_DXT1:
  70    case MESA_FORMAT_RGB_DXT1:
  71       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
  72    case MESA_FORMAT_RGBA_DXT3:
  73       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
  74    case MESA_FORMAT_RGBA_DXT5:
  75       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
  76    case MESA_FORMAT_Z24_S8:
  77       return (MAPSURF_32BIT | MT_32BIT_xI824);
  78    default:
  79       fprintf(stderr, "%s: bad image format %x\n", __FUNCTION__, mesa_format);
  80       abort();
  81       return 0;
  82    }
  83 }
  84
  85
  86
  87
  88 /* The i915 (and related graphics cores) do not support GL_CLAMP.  The
  89  * Intel drivers for "other operating systems" implement GL_CLAMP as
  90  * GL_CLAMP_TO_EDGE, so the same is done here.
  91  */
  92 static GLuint
  93 translate_wrap_mode(GLenum wrap)
  94 {
  95    switch (wrap) {
  96    case GL_REPEAT:
  97       return TEXCOORDMODE_WRAP;
  98    case GL_CLAMP:
  99       return TEXCOORDMODE_CLAMP_EDGE;   /* not quite correct */
 100    case GL_CLAMP_TO_EDGE:
 101       return TEXCOORDMODE_CLAMP_EDGE;
 102    case GL_CLAMP_TO_BORDER:
 103       return TEXCOORDMODE_CLAMP_BORDER;
 104    case GL_MIRRORED_REPEAT:
 105       return TEXCOORDMODE_MIRROR;
 106    default:
 107       return TEXCOORDMODE_WRAP;
 108    }
 109 }
 110
 111
 112
 113 /* Recalculate all state from scratch.  Perhaps not the most
 114  * efficient, but this has gotten complex enough that we need
 115  * something which is understandable and reliable.
 116  */
 117 static GLboolean
 118 i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
 119 {
 120    GLcontext *ctx = &intel->ctx;
 121    struct i915_context *i915 = i915_context(ctx);
 122    struct gl_texture_unit *tUnit = &ctx->Texture.Unit[unit];
 123    struct gl_texture_object *tObj = tUnit->_Current;
 124    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 125    struct gl_texture_image *firstImage;
 126    GLuint *state = i915->state.Tex[unit], format, pitch;
 127    GLint lodbias;
 128
 129    memset(state, 0, sizeof(state));
 130
 131    /*We need to refcount these. */
 132
 133    if (i915->state.tex_buffer[unit] != NULL) {
 134        dri_bo_unreference(i915->state.tex_buffer[unit]);
 135        i915->state.tex_buffer[unit] = NULL;
 136    }
 137
 138    if (!intelObj->imageOverride && !intel_finalize_mipmap_tree(intel, unit))
 139       return GL_FALSE;
 140
 141    /* Get first image here, since intelObj->firstLevel will get set in
 142     * the intel_finalize_mipmap_tree() call above.
 143     */
 144    firstImage = tObj->Image[0][intelObj->firstLevel];
 145
 146    if (intelObj->imageOverride) {
 147       i915->state.tex_buffer[unit] = NULL;
 148       i915->state.tex_offset[unit] = intelObj->textureOffset;
 149
 150       switch (intelObj->depthOverride) {
 151       case 32:
 152          format = MAPSURF_32BIT | MT_32BIT_ARGB8888;
 153          break;
 154       case 24:
 155       default:
 156          format = MAPSURF_32BIT | MT_32BIT_XRGB8888;
 157          break;
 158       case 16:
 159          format = MAPSURF_16BIT | MT_16BIT_RGB565;
 160          break;
 161       }
 162
 163       pitch = intelObj->pitchOverride;
 164    } else {
 165       dri_bo_reference(intelObj->mt->region->buffer);
 166       i915->state.tex_buffer[unit] = intelObj->mt->region->buffer;
 167       i915->state.tex_offset[unit] =  intel_miptree_image_offset(intelObj->mt,
 168                                                                  0, intelObj->
 169                                                                  firstLevel);
 170
 171       format = translate_texture_format(firstImage->TexFormat->MesaFormat,
 172                 tObj->DepthMode);
 173       pitch = intelObj->mt->pitch * intelObj->mt->cpp;
 174    }
 175
 176    state[I915_TEXREG_MS3] =
 177       (((firstImage->Height - 1) << MS3_HEIGHT_SHIFT) |
 178        ((firstImage->Width - 1) << MS3_WIDTH_SHIFT) | format |
 179        MS3_USE_FENCE_REGS);
 180
 181    state[I915_TEXREG_MS4] =
 182      ((((pitch / 4) - 1) << MS4_PITCH_SHIFT) | MS4_CUBE_FACE_ENA_MASK |
 183        ((((intelObj->lastLevel - intelObj->firstLevel) * 4)) <<
 184         MS4_MAX_LOD_SHIFT) | ((firstImage->Depth - 1) <<
 185                               MS4_VOLUME_DEPTH_SHIFT));
 186
 187
 188    {
 189       GLuint minFilt, mipFilt, magFilt;
 190
 191       switch (tObj->MinFilter) {
 192       case GL_NEAREST:
 193          minFilt = FILTER_NEAREST;
 194          mipFilt = MIPFILTER_NONE;
 195          break;
 196       case GL_LINEAR:
 197          minFilt = FILTER_LINEAR;
 198          mipFilt = MIPFILTER_NONE;
 199          break;
 200       case GL_NEAREST_MIPMAP_NEAREST:
 201          minFilt = FILTER_NEAREST;
 202          mipFilt = MIPFILTER_NEAREST;
 203          break;
 204       case GL_LINEAR_MIPMAP_NEAREST:
 205          minFilt = FILTER_LINEAR;
 206          mipFilt = MIPFILTER_NEAREST;
 207          break;
 208       case GL_NEAREST_MIPMAP_LINEAR:
 209          minFilt = FILTER_NEAREST;
 210          mipFilt = MIPFILTER_LINEAR;
 211          break;
 212       case GL_LINEAR_MIPMAP_LINEAR:
 213          minFilt = FILTER_LINEAR;
 214          mipFilt = MIPFILTER_LINEAR;
 215          break;
 216       default:
 217          return GL_FALSE;
 218       }
 219
 220       if (tObj->MaxAnisotropy > 1.0) {
 221          minFilt = FILTER_ANISOTROPIC;
 222          magFilt = FILTER_ANISOTROPIC;
 223       }
 224       else {
 225          switch (tObj->MagFilter) {
 226          case GL_NEAREST:
 227             magFilt = FILTER_NEAREST;
 228             break;
 229          case GL_LINEAR:
 230             magFilt = FILTER_LINEAR;
 231             break;
 232          default:
 233             return GL_FALSE;
 234          }
 235       }
 236
 237       lodbias = (int) ((tUnit->LodBias + tObj->LodBias) * 16.0);
 238       if (lodbias < -256)
 239           lodbias = -256;
 240       if (lodbias > 255)
 241           lodbias = 255;
 242       state[I915_TEXREG_SS2] = ((lodbias << SS2_LOD_BIAS_SHIFT) &
 243                                 SS2_LOD_BIAS_MASK);
 244
 245       /* YUV conversion:
 246        */
 247       if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
 248           firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
 249          state[I915_TEXREG_SS2] |= SS2_COLORSPACE_CONVERSION;
 250
 251       /* Shadow:
 252        */
 253       if (tObj->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB &&
 254           tObj->Target != GL_TEXTURE_3D) {
 255
 256          state[I915_TEXREG_SS2] |=
 257             (SS2_SHADOW_ENABLE |
 258              intel_translate_shadow_compare_func(tObj->CompareFunc));
 259
 260          if (tObj->Target == GL_TEXTURE_1D) {
 261                  minFilt = FILTER_NEAREST;
 262                  magFilt = FILTER_NEAREST;
 263          } else {
 264                 minFilt = FILTER_4X4_FLAT;
 265                 magFilt = FILTER_4X4_FLAT;
 266          }
 267       }
 268
 269       state[I915_TEXREG_SS2] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
 270                                  (mipFilt << SS2_MIP_FILTER_SHIFT) |
 271                                  (magFilt << SS2_MAG_FILTER_SHIFT));
 272    }
 273
 274    {
 275       GLenum ws = tObj->WrapS;
 276       GLenum wt = tObj->WrapT;
 277       GLenum wr = tObj->WrapR;
 278
 279
 280       /* 3D textures don't seem to respect the border color.
 281        * Fallback if there's ever a danger that they might refer to
 282        * it.
 283        *
 284        * Effectively this means fallback on 3D clamp or
 285        * clamp_to_border.
 286        */
 287       if (tObj->Target == GL_TEXTURE_3D &&
 288           (tObj->MinFilter != GL_NEAREST ||
 289            tObj->MagFilter != GL_NEAREST) &&
 290           (ws == GL_CLAMP ||
 291            wt == GL_CLAMP ||
 292            wr == GL_CLAMP ||
 293            ws == GL_CLAMP_TO_BORDER ||
 294            wt == GL_CLAMP_TO_BORDER || wr == GL_CLAMP_TO_BORDER))
 295          return GL_FALSE;
 296
 297
 298       state[I915_TEXREG_SS3] = ss3;     /* SS3_NORMALIZED_COORDS */
 299
 300       state[I915_TEXREG_SS3] |=
 301          ((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
 302           (translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
 303           (translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT));
 304
 305       state[I915_TEXREG_SS3] |= (unit << SS3_TEXTUREMAP_INDEX_SHIFT);
 306    }
 307
 308
 309    state[I915_TEXREG_SS4] = INTEL_PACKCOLOR8888(tObj->_BorderChan[0],
 310                                                 tObj->_BorderChan[1],
 311                                                 tObj->_BorderChan[2],
 312                                                 tObj->_BorderChan[3]);
 313
 314
 315    I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), GL_TRUE);
 316    /* memcmp was already disabled, but definitely won't work as the
 317     * region might now change and that wouldn't be detected:
 318     */
 319    I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 320
 321
 322 #if 0
 323    DBG(TEXTURE, "state[I915_TEXREG_SS2] = 0x%x\n", state[I915_TEXREG_SS2]);
 324    DBG(TEXTURE, "state[I915_TEXREG_SS3] = 0x%x\n", state[I915_TEXREG_SS3]);
 325    DBG(TEXTURE, "state[I915_TEXREG_SS4] = 0x%x\n", state[I915_TEXREG_SS4]);
 326    DBG(TEXTURE, "state[I915_TEXREG_MS2] = 0x%x\n", state[I915_TEXREG_MS2]);
 327    DBG(TEXTURE, "state[I915_TEXREG_MS3] = 0x%x\n", state[I915_TEXREG_MS3]);
 328    DBG(TEXTURE, "state[I915_TEXREG_MS4] = 0x%x\n", state[I915_TEXREG_MS4]);
 329 #endif
 330
 331    return GL_TRUE;
 332 }
 333
 334
 335
 336
 337 void
 338 i915UpdateTextureState(struct intel_context *intel)
 339 {
 340    GLboolean ok = GL_TRUE;
 341    GLuint i;
 342
 343    for (i = 0; i < I915_TEX_UNITS && ok; i++) {
 344       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 345       case TEXTURE_1D_BIT:
 346       case TEXTURE_2D_BIT:
 347       case TEXTURE_CUBE_BIT:
 348       case TEXTURE_3D_BIT:
 349          ok = i915_update_tex_unit(intel, i, SS3_NORMALIZED_COORDS);
 350          break;
 351       case TEXTURE_RECT_BIT:
 352          ok = i915_update_tex_unit(intel, i, 0);
 353          break;
 354       case 0:{
 355             struct i915_context *i915 = i915_context(&intel->ctx);
 356             if (i915->state.active & I915_UPLOAD_TEX(i))
 357                I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(i), GL_FALSE);
 358
 359             if (i915->state.tex_buffer[i] != NULL) {
 360                dri_bo_unreference(i915->state.tex_buffer[i]);
 361                i915->state.tex_buffer[i] = NULL;
 362             }
 363
 364             break;
 365          }
 366       default:
 367          ok = GL_FALSE;
 368          break;
 369       }
 370    }
 371
 372    FALLBACK(intel, I915_FALLBACK_TEXTURE, !ok);
 373 }