src/mesa/drivers/dri/i915tex/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 "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 "i830_context.h"
  37 #include "i830_reg.h"
  38
  39
  40
  41 static GLuint
  42 translate_texture_format(GLuint mesa_format)
  43 {
  44    switch (mesa_format) {
  45    case MESA_FORMAT_L8:
  46       return MAPSURF_8BIT | MT_8BIT_L8;
  47    case MESA_FORMAT_I8:
  48       return MAPSURF_8BIT | MT_8BIT_I8;
  49    case MESA_FORMAT_A8:
  50       return MAPSURF_8BIT | MT_8BIT_I8; /* Kludge! */
  51    case MESA_FORMAT_AL88:
  52       return MAPSURF_16BIT | MT_16BIT_AY88;
  53    case MESA_FORMAT_RGB565:
  54       return MAPSURF_16BIT | MT_16BIT_RGB565;
  55    case MESA_FORMAT_ARGB1555:
  56       return MAPSURF_16BIT | MT_16BIT_ARGB1555;
  57    case MESA_FORMAT_ARGB4444:
  58       return MAPSURF_16BIT | MT_16BIT_ARGB4444;
  59    case MESA_FORMAT_ARGB8888:
  60       return MAPSURF_32BIT | MT_32BIT_ARGB8888;
  61    case MESA_FORMAT_YCBCR_REV:
  62       return (MAPSURF_422 | MT_422_YCRCB_NORMAL);
  63    case MESA_FORMAT_YCBCR:
  64       return (MAPSURF_422 | MT_422_YCRCB_SWAPY);
  65    case MESA_FORMAT_RGB_FXT1:
  66    case MESA_FORMAT_RGBA_FXT1:
  67       return (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
  68    case MESA_FORMAT_RGBA_DXT1:
  69    case MESA_FORMAT_RGB_DXT1:
  70       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
  71    case MESA_FORMAT_RGBA_DXT3:
  72       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
  73    case MESA_FORMAT_RGBA_DXT5:
  74       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
  75    default:
  76       fprintf(stderr, "%s: bad image format %x\n", __FUNCTION__, mesa_format);
  77       abort();
  78       return 0;
  79    }
  80 }
  81
  82
  83
  84
  85 /* The i915 (and related graphics cores) do not support GL_CLAMP.  The
  86  * Intel drivers for "other operating systems" implement GL_CLAMP as
  87  * GL_CLAMP_TO_EDGE, so the same is done here.
  88  */
  89 static GLuint
  90 translate_wrap_mode(GLenum wrap)
  91 {
  92    switch (wrap) {
  93    case GL_REPEAT:
  94       return TEXCOORDMODE_WRAP;
  95    case GL_CLAMP:
  96    case GL_CLAMP_TO_EDGE:
  97       return TEXCOORDMODE_CLAMP;        /* not really correct */
  98    case GL_CLAMP_TO_BORDER:
  99       return TEXCOORDMODE_CLAMP_BORDER;
 100    case GL_MIRRORED_REPEAT:
 101       return TEXCOORDMODE_MIRROR;
 102    default:
 103       return TEXCOORDMODE_WRAP;
 104    }
 105 }
 106
 107
 108 /* Recalculate all state from scratch.  Perhaps not the most
 109  * efficient, but this has gotten complex enough that we need
 110  * something which is understandable and reliable.
 111  */
 112 static GLboolean
 113 i830_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
 114 {
 115    GLcontext *ctx = &intel->ctx;
 116    struct i830_context *i830 = i830_context(ctx);
 117    struct gl_texture_object *tObj = ctx->Texture.Unit[unit]._Current;
 118    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 119    struct gl_texture_image *firstImage;
 120    GLuint *state = i830->state.Tex[unit];
 121
 122    memset(state, 0, sizeof(state));
 123
 124    /*We need to refcount these. */
 125
 126    if (i830->state.tex_buffer[unit] != NULL) {
 127        dri_bo_unreference(i830->state.tex_buffer[unit]);
 128        i830->state.tex_buffer[unit] = NULL;
 129    }
 130
 131    if (!intel_finalize_mipmap_tree(intel, unit))
 132       return GL_FALSE;
 133
 134    /* Get first image here, since intelObj->firstLevel will get set in
 135     * the intel_finalize_mipmap_tree() call above.
 136     */
 137    firstImage = tObj->Image[0][intelObj->firstLevel];
 138
 139    dri_bo_reference(intelObj->mt->region->buffer);
 140    i830->state.tex_buffer[unit] = intelObj->mt->region->buffer;
 141    i830->state.tex_offset[unit] = intel_miptree_image_offset(intelObj->mt, 0,
 142                                                              intelObj->
 143                                                              firstLevel);
 144
 145
 146    state[I830_TEXREG_TM0LI] = (_3DSTATE_LOAD_STATE_IMMEDIATE_2 |
 147                                (LOAD_TEXTURE_MAP0 << unit) | 4);
 148
 149 /*    state[I830_TEXREG_TM0S0] = (TM0S0_USE_FENCE | */
 150 /*                             t->intel.TextureOffset); */
 151
 152
 153    state[I830_TEXREG_TM0S1] =
 154       (((firstImage->Height - 1) << TM0S1_HEIGHT_SHIFT) |
 155        ((firstImage->Width - 1) << TM0S1_WIDTH_SHIFT) |
 156        translate_texture_format(firstImage->TexFormat->MesaFormat));
 157
 158    state[I830_TEXREG_TM0S2] =
 159       (((((intelObj->mt->pitch * intelObj->mt->cpp) / 4) -
 160          1) << TM0S2_PITCH_SHIFT) | TM0S2_CUBE_FACE_ENA_MASK);
 161
 162    {
 163       if (tObj->Target == GL_TEXTURE_CUBE_MAP)
 164          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit) |
 165                                     CUBE_NEGX_ENABLE |
 166                                     CUBE_POSX_ENABLE |
 167                                     CUBE_NEGY_ENABLE |
 168                                     CUBE_POSY_ENABLE |
 169                                     CUBE_NEGZ_ENABLE | CUBE_POSZ_ENABLE);
 170       else
 171          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit));
 172    }
 173
 174
 175
 176
 177    {
 178       GLuint minFilt, mipFilt, magFilt;
 179
 180       switch (tObj->MinFilter) {
 181       case GL_NEAREST:
 182          minFilt = FILTER_NEAREST;
 183          mipFilt = MIPFILTER_NONE;
 184          break;
 185       case GL_LINEAR:
 186          minFilt = FILTER_LINEAR;
 187          mipFilt = MIPFILTER_NONE;
 188          break;
 189       case GL_NEAREST_MIPMAP_NEAREST:
 190          minFilt = FILTER_NEAREST;
 191          mipFilt = MIPFILTER_NEAREST;
 192          break;
 193       case GL_LINEAR_MIPMAP_NEAREST:
 194          minFilt = FILTER_LINEAR;
 195          mipFilt = MIPFILTER_NEAREST;
 196          break;
 197       case GL_NEAREST_MIPMAP_LINEAR:
 198          minFilt = FILTER_NEAREST;
 199          mipFilt = MIPFILTER_LINEAR;
 200          break;
 201       case GL_LINEAR_MIPMAP_LINEAR:
 202          minFilt = FILTER_LINEAR;
 203          mipFilt = MIPFILTER_LINEAR;
 204          break;
 205       default:
 206          return GL_FALSE;
 207       }
 208
 209       if (tObj->MaxAnisotropy > 1.0) {
 210          minFilt = FILTER_ANISOTROPIC;
 211          magFilt = FILTER_ANISOTROPIC;
 212       }
 213       else {
 214          switch (tObj->MagFilter) {
 215          case GL_NEAREST:
 216             magFilt = FILTER_NEAREST;
 217             break;
 218          case GL_LINEAR:
 219             magFilt = FILTER_LINEAR;
 220             break;
 221          default:
 222             return GL_FALSE;
 223          }
 224       }
 225
 226       state[I830_TEXREG_TM0S3] = i830->lodbias_tm0s3[unit];
 227
 228 #if 0
 229       /* YUV conversion:
 230        */
 231       if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
 232           firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
 233          state[I830_TEXREG_TM0S3] |= SS2_COLORSPACE_CONVERSION;
 234 #endif
 235
 236       state[I830_TEXREG_TM0S3] |= ((intelObj->lastLevel -
 237                                     intelObj->firstLevel) *
 238                                    4) << TM0S3_MIN_MIP_SHIFT;
 239
 240       state[I830_TEXREG_TM0S3] |= ((minFilt << TM0S3_MIN_FILTER_SHIFT) |
 241                                    (mipFilt << TM0S3_MIP_FILTER_SHIFT) |
 242                                    (magFilt << TM0S3_MAG_FILTER_SHIFT));
 243    }
 244
 245    {
 246       GLenum ws = tObj->WrapS;
 247       GLenum wt = tObj->WrapT;
 248
 249
 250       /* 3D textures not available on i830
 251        */
 252       if (tObj->Target == GL_TEXTURE_3D)
 253          return GL_FALSE;
 254
 255       state[I830_TEXREG_MCS] = (_3DSTATE_MAP_COORD_SET_CMD |
 256                                 MAP_UNIT(unit) |
 257                                 ENABLE_TEXCOORD_PARAMS |
 258                                 ss3 |
 259                                 ENABLE_ADDR_V_CNTL |
 260                                 TEXCOORD_ADDR_V_MODE(translate_wrap_mode(wt))
 261                                 | ENABLE_ADDR_U_CNTL |
 262                                 TEXCOORD_ADDR_U_MODE(translate_wrap_mode
 263                                                      (ws)));
 264    }
 265
 266
 267    state[I830_TEXREG_TM0S4] = INTEL_PACKCOLOR8888(tObj->_BorderChan[0],
 268                                                   tObj->_BorderChan[1],
 269                                                   tObj->_BorderChan[2],
 270                                                   tObj->_BorderChan[3]);
 271
 272
 273    I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(unit), GL_TRUE);
 274    /* memcmp was already disabled, but definitely won't work as the
 275     * region might now change and that wouldn't be detected:
 276     */
 277    I830_STATECHANGE(i830, I830_UPLOAD_TEX(unit));
 278    return GL_TRUE;
 279 }
 280
 281
 282
 283
 284 void
 285 i830UpdateTextureState(struct intel_context *intel)
 286 {
 287    struct i830_context *i830 = i830_context(&intel->ctx);
 288    GLboolean ok = GL_TRUE;
 289    GLuint i;
 290
 291    for (i = 0; i < I830_TEX_UNITS && ok; i++) {
 292       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 293       case TEXTURE_1D_BIT:
 294       case TEXTURE_2D_BIT:
 295       case TEXTURE_CUBE_BIT:
 296          ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_NORMAL);
 297          break;
 298       case TEXTURE_RECT_BIT:
 299          ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_IN_TEXELUNITS);
 300          break;
 301       case 0:{
 302          struct i830_context *i830 = i830_context(&intel->ctx);
 303          if (i830->state.active & I830_UPLOAD_TEX(i))
 304             I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(i), GL_FALSE);
 305
 306          if (i830->state.tex_buffer[i] != NULL) {
 307             dri_bo_unreference(i830->state.tex_buffer[i]);
 308             i830->state.tex_buffer[i] = NULL;
 309          }
 310          break;
 311       }
 312       case TEXTURE_3D_BIT:
 313       default:
 314          ok = GL_FALSE;
 315          break;
 316       }
 317    }
 318
 319    FALLBACK(intel, I830_FALLBACK_TEXTURE, !ok);
 320
 321    if (ok)
 322       i830EmitTextureBlend(i830);
 323 }