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
  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, GLenum DepthMode)
  41 {
  42    switch (mesa_format) {
  43    case MESA_FORMAT_L8:
  44       return MAPSURF_8BIT | MT_8BIT_L8;
  45    case MESA_FORMAT_I8:
  46       return MAPSURF_8BIT | MT_8BIT_I8;
  47    case MESA_FORMAT_A8:
  48       return MAPSURF_8BIT | MT_8BIT_A8;
  49    case MESA_FORMAT_AL88:
  50       return MAPSURF_16BIT | MT_16BIT_AY88;
  51    case MESA_FORMAT_RGB565:
  52       return MAPSURF_16BIT | MT_16BIT_RGB565;
  53    case MESA_FORMAT_ARGB1555:
  54       return MAPSURF_16BIT | MT_16BIT_ARGB1555;
  55    case MESA_FORMAT_ARGB4444:
  56       return MAPSURF_16BIT | MT_16BIT_ARGB4444;
  57    case MESA_FORMAT_ARGB8888:
  58       return MAPSURF_32BIT | MT_32BIT_ARGB8888;
  59    case MESA_FORMAT_YCBCR_REV:
  60       return (MAPSURF_422 | MT_422_YCRCB_NORMAL);
  61    case MESA_FORMAT_YCBCR:
  62       return (MAPSURF_422 | MT_422_YCRCB_SWAPY);
  63    case MESA_FORMAT_RGB_FXT1:
  64    case MESA_FORMAT_RGBA_FXT1:
  65       return (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
  66    case MESA_FORMAT_Z16:
  67       if (DepthMode == GL_ALPHA)
  68           return (MAPSURF_16BIT | MT_16BIT_A16);
  69       else if (DepthMode == GL_INTENSITY)
  70           return (MAPSURF_16BIT | MT_16BIT_I16);
  71       else
  72           return (MAPSURF_16BIT | MT_16BIT_L16);
  73    case MESA_FORMAT_RGBA_DXT1:
  74    case MESA_FORMAT_RGB_DXT1:
  75       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
  76    case MESA_FORMAT_RGBA_DXT3:
  77       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
  78    case MESA_FORMAT_RGBA_DXT5:
  79       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
  80    case MESA_FORMAT_S8_Z24:
  81       return (MAPSURF_32BIT | MT_32BIT_xI824);
  82    default:
  83       fprintf(stderr, "%s: bad image format %x\n", __FUNCTION__, mesa_format);
  84       abort();
  85       return 0;
  86    }
  87 }
  88
  89
  90
  91
  92 /* The i915 (and related graphics cores) do not support GL_CLAMP.  The
  93  * Intel drivers for "other operating systems" implement GL_CLAMP as
  94  * GL_CLAMP_TO_EDGE, so the same is done here.
  95  */
  96 static GLuint
  97 translate_wrap_mode(GLenum wrap)
  98 {
  99    switch (wrap) {
 100    case GL_REPEAT:
 101       return TEXCOORDMODE_WRAP;
 102    case GL_CLAMP:
 103       return TEXCOORDMODE_CLAMP_EDGE;   /* not quite correct */
 104    case GL_CLAMP_TO_EDGE:
 105       return TEXCOORDMODE_CLAMP_EDGE;
 106    case GL_CLAMP_TO_BORDER:
 107       return TEXCOORDMODE_CLAMP_BORDER;
 108    case GL_MIRRORED_REPEAT:
 109       return TEXCOORDMODE_MIRROR;
 110    default:
 111       return TEXCOORDMODE_WRAP;
 112    }
 113 }
 114
 115
 116
 117 /* Recalculate all state from scratch.  Perhaps not the most
 118  * efficient, but this has gotten complex enough that we need
 119  * something which is understandable and reliable.
 120  */
 121 static GLboolean
 122 i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
 123 {
 124    GLcontext *ctx = &intel->ctx;
 125    struct i915_context *i915 = i915_context(ctx);
 126    struct gl_texture_unit *tUnit = &ctx->Texture.Unit[unit];
 127    struct gl_texture_object *tObj = tUnit->_Current;
 128    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 129    struct gl_texture_image *firstImage;
 130    GLuint *state = i915->state.Tex[unit], format, pitch;
 131    GLint lodbias;
 132
 133    memset(state, 0, sizeof(state));
 134
 135    /*We need to refcount these. */
 136
 137    if (i915->state.tex_buffer[unit] != NULL) {
 138        dri_bo_unreference(i915->state.tex_buffer[unit]);
 139        i915->state.tex_buffer[unit] = NULL;
 140    }
 141
 142    if (!intelObj->imageOverride && !intel_finalize_mipmap_tree(intel, unit))
 143       return GL_FALSE;
 144
 145    /* Get first image here, since intelObj->firstLevel will get set in
 146     * the intel_finalize_mipmap_tree() call above.
 147     */
 148    firstImage = tObj->Image[0][intelObj->firstLevel];
 149
 150    if (intelObj->imageOverride) {
 151       i915->state.tex_buffer[unit] = NULL;
 152       i915->state.tex_offset[unit] = intelObj->textureOffset;
 153
 154       switch (intelObj->depthOverride) {
 155       case 32:
 156          format = MAPSURF_32BIT | MT_32BIT_ARGB8888;
 157          break;
 158       case 24:
 159       default:
 160          format = MAPSURF_32BIT | MT_32BIT_XRGB8888;
 161          break;
 162       case 16:
 163          format = MAPSURF_16BIT | MT_16BIT_RGB565;
 164          break;
 165       }
 166
 167       pitch = intelObj->pitchOverride;
 168    } else {
 169       dri_bo_reference(intelObj->mt->region->buffer);
 170       i915->state.tex_buffer[unit] = intelObj->mt->region->buffer;
 171       i915->state.tex_offset[unit] =  intel_miptree_image_offset(intelObj->mt,
 172                                                                  0, intelObj->
 173                                                                  firstLevel);
 174
 175       format = translate_texture_format(firstImage->TexFormat->MesaFormat,
 176                 tObj->DepthMode);
 177       pitch = intelObj->mt->pitch * intelObj->mt->cpp;
 178    }
 179
 180    state[I915_TEXREG_MS3] =
 181       (((firstImage->Height - 1) << MS3_HEIGHT_SHIFT) |
 182        ((firstImage->Width - 1) << MS3_WIDTH_SHIFT) | format |
 183        MS3_USE_FENCE_REGS);
 184
 185    state[I915_TEXREG_MS4] =
 186      ((((pitch / 4) - 1) << MS4_PITCH_SHIFT) | MS4_CUBE_FACE_ENA_MASK |
 187        ((((intelObj->lastLevel - intelObj->firstLevel) * 4)) <<
 188         MS4_MAX_LOD_SHIFT) | ((firstImage->Depth - 1) <<
 189                               MS4_VOLUME_DEPTH_SHIFT));
 190
 191
 192    {
 193       GLuint minFilt, mipFilt, magFilt;
 194
 195       switch (tObj->MinFilter) {
 196       case GL_NEAREST:
 197          minFilt = FILTER_NEAREST;
 198          mipFilt = MIPFILTER_NONE;
 199          break;
 200       case GL_LINEAR:
 201          minFilt = FILTER_LINEAR;
 202          mipFilt = MIPFILTER_NONE;
 203          break;
 204       case GL_NEAREST_MIPMAP_NEAREST:
 205          minFilt = FILTER_NEAREST;
 206          mipFilt = MIPFILTER_NEAREST;
 207          break;
 208       case GL_LINEAR_MIPMAP_NEAREST:
 209          minFilt = FILTER_LINEAR;
 210          mipFilt = MIPFILTER_NEAREST;
 211          break;
 212       case GL_NEAREST_MIPMAP_LINEAR:
 213          minFilt = FILTER_NEAREST;
 214          mipFilt = MIPFILTER_LINEAR;
 215          break;
 216       case GL_LINEAR_MIPMAP_LINEAR:
 217          minFilt = FILTER_LINEAR;
 218          mipFilt = MIPFILTER_LINEAR;
 219          break;
 220       default:
 221          return GL_FALSE;
 222       }
 223
 224       if (tObj->MaxAnisotropy > 1.0) {
 225          minFilt = FILTER_ANISOTROPIC;
 226          magFilt = FILTER_ANISOTROPIC;
 227       }
 228       else {
 229          switch (tObj->MagFilter) {
 230          case GL_NEAREST:
 231             magFilt = FILTER_NEAREST;
 232             break;
 233          case GL_LINEAR:
 234             magFilt = FILTER_LINEAR;
 235             break;
 236          default:
 237             return GL_FALSE;
 238          }
 239       }
 240
 241       lodbias = (int) ((tUnit->LodBias + tObj->LodBias) * 16.0);
 242       if (lodbias < -256)
 243           lodbias = -256;
 244       if (lodbias > 255)
 245           lodbias = 255;
 246       state[I915_TEXREG_SS2] = ((lodbias << SS2_LOD_BIAS_SHIFT) &
 247                                 SS2_LOD_BIAS_MASK);
 248
 249       /* YUV conversion:
 250        */
 251       if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
 252           firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
 253          state[I915_TEXREG_SS2] |= SS2_COLORSPACE_CONVERSION;
 254
 255       /* Shadow:
 256        */
 257       if (tObj->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB &&
 258           tObj->Target != GL_TEXTURE_3D) {
 259          if (tObj->Target == GL_TEXTURE_1D)
 260             return GL_FALSE;
 261
 262          state[I915_TEXREG_SS2] |=
 263             (SS2_SHADOW_ENABLE |
 264              intel_translate_shadow_compare_func(tObj->CompareFunc));
 265
 266          minFilt = FILTER_4X4_FLAT;
 267          magFilt = FILTER_4X4_FLAT;
 268       }
 269
 270       state[I915_TEXREG_SS2] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
 271                                  (mipFilt << SS2_MIP_FILTER_SHIFT) |
 272                                  (magFilt << SS2_MAG_FILTER_SHIFT));
 273    }
 274
 275    {
 276       GLenum ws = tObj->WrapS;
 277       GLenum wt = tObj->WrapT;
 278       GLenum wr = tObj->WrapR;
 279
 280
 281       /* 3D textures don't seem to respect the border color.
 282        * Fallback if there's ever a danger that they might refer to
 283        * it.
 284        *
 285        * Effectively this means fallback on 3D clamp or
 286        * clamp_to_border.
 287        */
 288       if (tObj->Target == GL_TEXTURE_3D &&
 289           (tObj->MinFilter != GL_NEAREST ||
 290            tObj->MagFilter != GL_NEAREST) &&
 291           (ws == GL_CLAMP ||
 292            wt == GL_CLAMP ||
 293            wr == GL_CLAMP ||
 294            ws == GL_CLAMP_TO_BORDER ||
 295            wt == GL_CLAMP_TO_BORDER || wr == GL_CLAMP_TO_BORDER))
 296          return GL_FALSE;
 297
 298
 299       state[I915_TEXREG_SS3] = ss3;     /* SS3_NORMALIZED_COORDS */
 300
 301       state[I915_TEXREG_SS3] |=
 302          ((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
 303           (translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
 304           (translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT));
 305
 306       state[I915_TEXREG_SS3] |= (unit << SS3_TEXTUREMAP_INDEX_SHIFT);
 307    }
 308
 309
 310    state[I915_TEXREG_SS4] = INTEL_PACKCOLOR8888(tObj->_BorderChan[0],
 311                                                 tObj->_BorderChan[1],
 312                                                 tObj->_BorderChan[2],
 313                                                 tObj->_BorderChan[3]);
 314
 315
 316    I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), GL_TRUE);
 317    /* memcmp was already disabled, but definitely won't work as the
 318     * region might now change and that wouldn't be detected:
 319     */
 320    I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 321
 322
 323 #if 0
 324    DBG(TEXTURE, "state[I915_TEXREG_SS2] = 0x%x\n", state[I915_TEXREG_SS2]);
 325    DBG(TEXTURE, "state[I915_TEXREG_SS3] = 0x%x\n", state[I915_TEXREG_SS3]);
 326    DBG(TEXTURE, "state[I915_TEXREG_SS4] = 0x%x\n", state[I915_TEXREG_SS4]);
 327    DBG(TEXTURE, "state[I915_TEXREG_MS2] = 0x%x\n", state[I915_TEXREG_MS2]);
 328    DBG(TEXTURE, "state[I915_TEXREG_MS3] = 0x%x\n", state[I915_TEXREG_MS3]);
 329    DBG(TEXTURE, "state[I915_TEXREG_MS4] = 0x%x\n", state[I915_TEXREG_MS4]);
 330 #endif
 331
 332    return GL_TRUE;
 333 }
 334
 335
 336
 337
 338 void
 339 i915UpdateTextureState(struct intel_context *intel)
 340 {
 341    GLboolean ok = GL_TRUE;
 342    GLuint i;
 343
 344    for (i = 0; i < I915_TEX_UNITS && ok; i++) {
 345       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 346       case TEXTURE_1D_BIT:
 347       case TEXTURE_2D_BIT:
 348       case TEXTURE_CUBE_BIT:
 349       case TEXTURE_3D_BIT:
 350          ok = i915_update_tex_unit(intel, i, SS3_NORMALIZED_COORDS);
 351          break;
 352       case TEXTURE_RECT_BIT:
 353          ok = i915_update_tex_unit(intel, i, 0);
 354          break;
 355       case 0:{
 356             struct i915_context *i915 = i915_context(&intel->ctx);
 357             if (i915->state.active & I915_UPLOAD_TEX(i))
 358                I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(i), GL_FALSE);
 359
 360             if (i915->state.tex_buffer[i] != NULL) {
 361                dri_bo_unreference(i915->state.tex_buffer[i]);
 362                i915->state.tex_buffer[i] = NULL;
 363             }
 364
 365             break;
 366          }
 367       default:
 368          ok = GL_FALSE;
 369          break;
 370       }
 371    }
 372
 373    FALLBACK(intel, I915_FALLBACK_TEXTURE, !ok);
 374 }