src/mesa/drivers/dri/i915/i830_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 "i830_context.h"
  36 #include "i830_reg.h"
  37
  38
  39
  40 static GLuint
  41 translate_texture_format(GLuint mesa_format)
  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_I8; /* Kludge! */
  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_RGBA_DXT1:
  68    case MESA_FORMAT_RGB_DXT1:
  69       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
  70    case MESA_FORMAT_RGBA_DXT3:
  71       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
  72    case MESA_FORMAT_RGBA_DXT5:
  73       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
  74    default:
  75       fprintf(stderr, "%s: bad image format %x\n", __FUNCTION__, mesa_format);
  76       abort();
  77       return 0;
  78    }
  79 }
  80
  81
  82
  83
  84 /* The i915 (and related graphics cores) do not support GL_CLAMP.  The
  85  * Intel drivers for "other operating systems" implement GL_CLAMP as
  86  * GL_CLAMP_TO_EDGE, so the same is done here.
  87  */
  88 static GLuint
  89 translate_wrap_mode(GLenum wrap)
  90 {
  91    switch (wrap) {
  92    case GL_REPEAT:
  93       return TEXCOORDMODE_WRAP;
  94    case GL_CLAMP:
  95    case GL_CLAMP_TO_EDGE:
  96       return TEXCOORDMODE_CLAMP;        /* not really correct */
  97    case GL_CLAMP_TO_BORDER:
  98       return TEXCOORDMODE_CLAMP_BORDER;
  99    case GL_MIRRORED_REPEAT:
 100       return TEXCOORDMODE_MIRROR;
 101    default:
 102       return TEXCOORDMODE_WRAP;
 103    }
 104 }
 105
 106
 107 /* Recalculate all state from scratch.  Perhaps not the most
 108  * efficient, but this has gotten complex enough that we need
 109  * something which is understandable and reliable.
 110  */
 111 static GLboolean
 112 i830_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
 113 {
 114    GLcontext *ctx = &intel->ctx;
 115    struct i830_context *i830 = i830_context(ctx);
 116    struct gl_texture_unit *tUnit = &ctx->Texture.Unit[unit];
 117    struct gl_texture_object *tObj = tUnit->_Current;
 118    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 119    struct gl_texture_image *firstImage;
 120    GLuint *state = i830->state.Tex[unit], format, pitch;
 121    GLint lodbias;
 122
 123    memset(state, 0, sizeof(state));
 124
 125    /*We need to refcount these. */
 126
 127    if (i830->state.tex_buffer[unit] != NULL) {
 128        dri_bo_unreference(i830->state.tex_buffer[unit]);
 129        i830->state.tex_buffer[unit] = NULL;
 130    }
 131
 132    if (!intelObj->imageOverride && !intel_finalize_mipmap_tree(intel, unit))
 133       return GL_FALSE;
 134
 135    /* Get first image here, since intelObj->firstLevel will get set in
 136     * the intel_finalize_mipmap_tree() call above.
 137     */
 138    firstImage = tObj->Image[0][intelObj->firstLevel];
 139
 140    if (intelObj->imageOverride) {
 141       i830->state.tex_buffer[unit] = NULL;
 142       i830->state.tex_offset[unit] = intelObj->textureOffset;
 143
 144       switch (intelObj->depthOverride) {
 145       case 32:
 146          format = MAPSURF_32BIT | MT_32BIT_ARGB8888;
 147          break;
 148       case 24:
 149       default:
 150          format = MAPSURF_32BIT | MT_32BIT_XRGB8888;
 151          break;
 152       case 16:
 153          format = MAPSURF_16BIT | MT_16BIT_RGB565;
 154          break;
 155       }
 156
 157       pitch = intelObj->pitchOverride;
 158    } else {
 159       dri_bo_reference(intelObj->mt->region->buffer);
 160       i830->state.tex_buffer[unit] = intelObj->mt->region->buffer;
 161       i830->state.tex_offset[unit] = intel_miptree_image_offset(intelObj->mt,
 162                                                                 0, intelObj->
 163                                                                 firstLevel);
 164
 165       format = translate_texture_format(firstImage->TexFormat->MesaFormat);
 166       pitch = intelObj->mt->pitch * intelObj->mt->cpp;
 167    }
 168
 169    state[I830_TEXREG_TM0LI] = (_3DSTATE_LOAD_STATE_IMMEDIATE_2 |
 170                                (LOAD_TEXTURE_MAP0 << unit) | 4);
 171
 172 /*    state[I830_TEXREG_TM0S0] = (TM0S0_USE_FENCE | */
 173 /*                             t->intel.TextureOffset); */
 174
 175
 176    state[I830_TEXREG_TM0S1] =
 177       (((firstImage->Height - 1) << TM0S1_HEIGHT_SHIFT) |
 178        ((firstImage->Width - 1) << TM0S1_WIDTH_SHIFT) | format);
 179
 180    state[I830_TEXREG_TM0S2] =
 181       ((((pitch / 4) - 1) << TM0S2_PITCH_SHIFT) | TM0S2_CUBE_FACE_ENA_MASK);
 182
 183    {
 184       if (tObj->Target == GL_TEXTURE_CUBE_MAP)
 185          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit) |
 186                                     CUBE_NEGX_ENABLE |
 187                                     CUBE_POSX_ENABLE |
 188                                     CUBE_NEGY_ENABLE |
 189                                     CUBE_POSY_ENABLE |
 190                                     CUBE_NEGZ_ENABLE | CUBE_POSZ_ENABLE);
 191       else
 192          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit));
 193    }
 194
 195
 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       }
 234       else {
 235          switch (tObj->MagFilter) {
 236          case GL_NEAREST:
 237             magFilt = FILTER_NEAREST;
 238             break;
 239          case GL_LINEAR:
 240             magFilt = FILTER_LINEAR;
 241             break;
 242          default:
 243             return GL_FALSE;
 244          }
 245       }
 246
 247       lodbias = (int) ((tUnit->LodBias + tObj->LodBias) * 16.0);
 248       if (lodbias < -64)
 249           lodbias = -64;
 250       if (lodbias > 63)
 251           lodbias = 63;
 252
 253       state[I830_TEXREG_TM0S3] = ((lodbias << TM0S3_LOD_BIAS_SHIFT) &
 254                                   TM0S3_LOD_BIAS_MASK);
 255 #if 0
 256       /* YUV conversion:
 257        */
 258       if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
 259           firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
 260          state[I830_TEXREG_TM0S3] |= SS2_COLORSPACE_CONVERSION;
 261 #endif
 262
 263       state[I830_TEXREG_TM0S3] |= ((intelObj->lastLevel -
 264                                     intelObj->firstLevel) *
 265                                    4) << TM0S3_MIN_MIP_SHIFT;
 266
 267       state[I830_TEXREG_TM0S3] |= ((minFilt << TM0S3_MIN_FILTER_SHIFT) |
 268                                    (mipFilt << TM0S3_MIP_FILTER_SHIFT) |
 269                                    (magFilt << TM0S3_MAG_FILTER_SHIFT));
 270    }
 271
 272    {
 273       GLenum ws = tObj->WrapS;
 274       GLenum wt = tObj->WrapT;
 275
 276
 277       /* 3D textures not available on i830
 278        */
 279       if (tObj->Target == GL_TEXTURE_3D)
 280          return GL_FALSE;
 281
 282       state[I830_TEXREG_MCS] = (_3DSTATE_MAP_COORD_SET_CMD |
 283                                 MAP_UNIT(unit) |
 284                                 ENABLE_TEXCOORD_PARAMS |
 285                                 ss3 |
 286                                 ENABLE_ADDR_V_CNTL |
 287                                 TEXCOORD_ADDR_V_MODE(translate_wrap_mode(wt))
 288                                 | ENABLE_ADDR_U_CNTL |
 289                                 TEXCOORD_ADDR_U_MODE(translate_wrap_mode
 290                                                      (ws)));
 291    }
 292
 293
 294    state[I830_TEXREG_TM0S4] = INTEL_PACKCOLOR8888(tObj->_BorderChan[0],
 295                                                   tObj->_BorderChan[1],
 296                                                   tObj->_BorderChan[2],
 297                                                   tObj->_BorderChan[3]);
 298
 299
 300    I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(unit), GL_TRUE);
 301    /* memcmp was already disabled, but definitely won't work as the
 302     * region might now change and that wouldn't be detected:
 303     */
 304    I830_STATECHANGE(i830, I830_UPLOAD_TEX(unit));
 305    return GL_TRUE;
 306 }
 307
 308
 309
 310
 311 void
 312 i830UpdateTextureState(struct intel_context *intel)
 313 {
 314    struct i830_context *i830 = i830_context(&intel->ctx);
 315    GLboolean ok = GL_TRUE;
 316    GLuint i;
 317
 318    for (i = 0; i < I830_TEX_UNITS && ok; i++) {
 319       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 320       case TEXTURE_1D_BIT:
 321       case TEXTURE_2D_BIT:
 322       case TEXTURE_CUBE_BIT:
 323          ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_NORMAL);
 324          break;
 325       case TEXTURE_RECT_BIT:
 326          ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_IN_TEXELUNITS);
 327          break;
 328       case 0:{
 329          struct i830_context *i830 = i830_context(&intel->ctx);
 330          if (i830->state.active & I830_UPLOAD_TEX(i))
 331             I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(i), GL_FALSE);
 332
 333          if (i830->state.tex_buffer[i] != NULL) {
 334             dri_bo_unreference(i830->state.tex_buffer[i]);
 335             i830->state.tex_buffer[i] = NULL;
 336          }
 337          break;
 338       }
 339       case TEXTURE_3D_BIT:
 340       default:
 341          ok = GL_FALSE;
 342          break;
 343       }
 344    }
 345
 346    FALLBACK(intel, I830_FALLBACK_TEXTURE, !ok);
 347
 348    if (ok)
 349       i830EmitTextureBlend(i830);
 350 }