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, GLuint internal_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       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_RGBA_DXT1:
  71    case MESA_FORMAT_RGB_DXT1:
  72       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
  73    case MESA_FORMAT_RGBA_DXT3:
  74       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
  75    case MESA_FORMAT_RGBA_DXT5:
  76       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
  77    default:
  78       fprintf(stderr, "%s: bad image format %x\n", __FUNCTION__, mesa_format);
  79       abort();
  80       return 0;
  81    }
  82 }
  83
  84
  85
  86
  87 /* The i915 (and related graphics cores) do not support GL_CLAMP.  The
  88  * Intel drivers for "other operating systems" implement GL_CLAMP as
  89  * GL_CLAMP_TO_EDGE, so the same is done here.
  90  */
  91 static GLuint
  92 translate_wrap_mode(GLenum wrap)
  93 {
  94    switch (wrap) {
  95    case GL_REPEAT:
  96       return TEXCOORDMODE_WRAP;
  97    case GL_CLAMP:
  98    case GL_CLAMP_TO_EDGE:
  99       return TEXCOORDMODE_CLAMP;        /* not really correct */
 100    case GL_CLAMP_TO_BORDER:
 101       return TEXCOORDMODE_CLAMP_BORDER;
 102    case GL_MIRRORED_REPEAT:
 103       return TEXCOORDMODE_MIRROR;
 104    default:
 105       return TEXCOORDMODE_WRAP;
 106    }
 107 }
 108
 109
 110 /* Recalculate all state from scratch.  Perhaps not the most
 111  * efficient, but this has gotten complex enough that we need
 112  * something which is understandable and reliable.
 113  */
 114 static GLboolean
 115 i830_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
 116 {
 117    GLcontext *ctx = &intel->ctx;
 118    struct i830_context *i830 = i830_context(ctx);
 119    struct gl_texture_unit *tUnit = &ctx->Texture.Unit[unit];
 120    struct gl_texture_object *tObj = tUnit->_Current;
 121    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 122    struct gl_texture_image *firstImage;
 123    GLuint *state = i830->state.Tex[unit], format, pitch;
 124    GLint lodbias;
 125
 126    memset(state, 0, sizeof(state));
 127
 128    /*We need to refcount these. */
 129
 130    if (i830->state.tex_buffer[unit] != NULL) {
 131        dri_bo_unreference(i830->state.tex_buffer[unit]);
 132        i830->state.tex_buffer[unit] = NULL;
 133    }
 134
 135    if (!intelObj->imageOverride && !intel_finalize_mipmap_tree(intel, unit))
 136       return GL_FALSE;
 137
 138    /* Get first image here, since intelObj->firstLevel will get set in
 139     * the intel_finalize_mipmap_tree() call above.
 140     */
 141    firstImage = tObj->Image[0][intelObj->firstLevel];
 142
 143    if (intelObj->imageOverride) {
 144       i830->state.tex_buffer[unit] = NULL;
 145       i830->state.tex_offset[unit] = intelObj->textureOffset;
 146
 147       switch (intelObj->depthOverride) {
 148       case 32:
 149          format = MAPSURF_32BIT | MT_32BIT_ARGB8888;
 150          break;
 151       case 24:
 152       default:
 153          format = MAPSURF_32BIT | MT_32BIT_XRGB8888;
 154          break;
 155       case 16:
 156          format = MAPSURF_16BIT | MT_16BIT_RGB565;
 157          break;
 158       }
 159
 160       pitch = intelObj->pitchOverride;
 161    } else {
 162       dri_bo_reference(intelObj->mt->region->buffer);
 163       i830->state.tex_buffer[unit] = intelObj->mt->region->buffer;
 164       i830->state.tex_offset[unit] = intel_miptree_image_offset(intelObj->mt,
 165                                                                 0, intelObj->
 166                                                                 firstLevel);
 167
 168       format = translate_texture_format(firstImage->TexFormat->MesaFormat,
 169                                         firstImage->InternalFormat);
 170       pitch = intelObj->mt->pitch * intelObj->mt->cpp;
 171    }
 172
 173    state[I830_TEXREG_TM0LI] = (_3DSTATE_LOAD_STATE_IMMEDIATE_2 |
 174                                (LOAD_TEXTURE_MAP0 << unit) | 4);
 175
 176 /*    state[I830_TEXREG_TM0S0] = (TM0S0_USE_FENCE | */
 177 /*                             t->intel.TextureOffset); */
 178
 179
 180    state[I830_TEXREG_TM0S1] =
 181       (((firstImage->Height - 1) << TM0S1_HEIGHT_SHIFT) |
 182        ((firstImage->Width - 1) << TM0S1_WIDTH_SHIFT) | format);
 183
 184    state[I830_TEXREG_TM0S2] =
 185       ((((pitch / 4) - 1) << TM0S2_PITCH_SHIFT) | TM0S2_CUBE_FACE_ENA_MASK);
 186
 187    {
 188       if (tObj->Target == GL_TEXTURE_CUBE_MAP)
 189          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit) |
 190                                     CUBE_NEGX_ENABLE |
 191                                     CUBE_POSX_ENABLE |
 192                                     CUBE_NEGY_ENABLE |
 193                                     CUBE_POSY_ENABLE |
 194                                     CUBE_NEGZ_ENABLE | CUBE_POSZ_ENABLE);
 195       else
 196          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit));
 197    }
 198
 199
 200
 201
 202    {
 203       GLuint minFilt, mipFilt, magFilt;
 204
 205       switch (tObj->MinFilter) {
 206       case GL_NEAREST:
 207          minFilt = FILTER_NEAREST;
 208          mipFilt = MIPFILTER_NONE;
 209          break;
 210       case GL_LINEAR:
 211          minFilt = FILTER_LINEAR;
 212          mipFilt = MIPFILTER_NONE;
 213          break;
 214       case GL_NEAREST_MIPMAP_NEAREST:
 215          minFilt = FILTER_NEAREST;
 216          mipFilt = MIPFILTER_NEAREST;
 217          break;
 218       case GL_LINEAR_MIPMAP_NEAREST:
 219          minFilt = FILTER_LINEAR;
 220          mipFilt = MIPFILTER_NEAREST;
 221          break;
 222       case GL_NEAREST_MIPMAP_LINEAR:
 223          minFilt = FILTER_NEAREST;
 224          mipFilt = MIPFILTER_LINEAR;
 225          break;
 226       case GL_LINEAR_MIPMAP_LINEAR:
 227          minFilt = FILTER_LINEAR;
 228          mipFilt = MIPFILTER_LINEAR;
 229          break;
 230       default:
 231          return GL_FALSE;
 232       }
 233
 234       if (tObj->MaxAnisotropy > 1.0) {
 235          minFilt = FILTER_ANISOTROPIC;
 236          magFilt = FILTER_ANISOTROPIC;
 237       }
 238       else {
 239          switch (tObj->MagFilter) {
 240          case GL_NEAREST:
 241             magFilt = FILTER_NEAREST;
 242             break;
 243          case GL_LINEAR:
 244             magFilt = FILTER_LINEAR;
 245             break;
 246          default:
 247             return GL_FALSE;
 248          }
 249       }
 250
 251       lodbias = (int) ((tUnit->LodBias + tObj->LodBias) * 16.0);
 252       if (lodbias < -64)
 253           lodbias = -64;
 254       if (lodbias > 63)
 255           lodbias = 63;
 256
 257       state[I830_TEXREG_TM0S3] = ((lodbias << TM0S3_LOD_BIAS_SHIFT) &
 258                                   TM0S3_LOD_BIAS_MASK);
 259 #if 0
 260       /* YUV conversion:
 261        */
 262       if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
 263           firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
 264          state[I830_TEXREG_TM0S3] |= SS2_COLORSPACE_CONVERSION;
 265 #endif
 266
 267       state[I830_TEXREG_TM0S3] |= ((intelObj->lastLevel -
 268                                     intelObj->firstLevel) *
 269                                    4) << TM0S3_MIN_MIP_SHIFT;
 270
 271       state[I830_TEXREG_TM0S3] |= ((minFilt << TM0S3_MIN_FILTER_SHIFT) |
 272                                    (mipFilt << TM0S3_MIP_FILTER_SHIFT) |
 273                                    (magFilt << TM0S3_MAG_FILTER_SHIFT));
 274    }
 275
 276    {
 277       GLenum ws = tObj->WrapS;
 278       GLenum wt = tObj->WrapT;
 279
 280
 281       /* 3D textures not available on i830
 282        */
 283       if (tObj->Target == GL_TEXTURE_3D)
 284          return GL_FALSE;
 285
 286       state[I830_TEXREG_MCS] = (_3DSTATE_MAP_COORD_SET_CMD |
 287                                 MAP_UNIT(unit) |
 288                                 ENABLE_TEXCOORD_PARAMS |
 289                                 ss3 |
 290                                 ENABLE_ADDR_V_CNTL |
 291                                 TEXCOORD_ADDR_V_MODE(translate_wrap_mode(wt))
 292                                 | ENABLE_ADDR_U_CNTL |
 293                                 TEXCOORD_ADDR_U_MODE(translate_wrap_mode
 294                                                      (ws)));
 295    }
 296
 297
 298    state[I830_TEXREG_TM0S4] = INTEL_PACKCOLOR8888(tObj->_BorderChan[0],
 299                                                   tObj->_BorderChan[1],
 300                                                   tObj->_BorderChan[2],
 301                                                   tObj->_BorderChan[3]);
 302
 303
 304    I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(unit), GL_TRUE);
 305    /* memcmp was already disabled, but definitely won't work as the
 306     * region might now change and that wouldn't be detected:
 307     */
 308    I830_STATECHANGE(i830, I830_UPLOAD_TEX(unit));
 309    return GL_TRUE;
 310 }
 311
 312
 313
 314
 315 void
 316 i830UpdateTextureState(struct intel_context *intel)
 317 {
 318    struct i830_context *i830 = i830_context(&intel->ctx);
 319    GLboolean ok = GL_TRUE;
 320    GLuint i;
 321
 322    for (i = 0; i < I830_TEX_UNITS && ok; i++) {
 323       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 324       case TEXTURE_1D_BIT:
 325       case TEXTURE_2D_BIT:
 326       case TEXTURE_CUBE_BIT:
 327          ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_NORMAL);
 328          break;
 329       case TEXTURE_RECT_BIT:
 330          ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_IN_TEXELUNITS);
 331          break;
 332       case 0:{
 333          struct i830_context *i830 = i830_context(&intel->ctx);
 334          if (i830->state.active & I830_UPLOAD_TEX(i))
 335             I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(i), GL_FALSE);
 336
 337          if (i830->state.tex_buffer[i] != NULL) {
 338             dri_bo_unreference(i830->state.tex_buffer[i]);
 339             i830->state.tex_buffer[i] = NULL;
 340          }
 341          break;
 342       }
 343       case TEXTURE_3D_BIT:
 344       default:
 345          ok = GL_FALSE;
 346          break;
 347       }
 348    }
 349
 350    FALLBACK(intel, I830_FALLBACK_TEXTURE, !ok);
 351
 352    if (ok)
 353       i830EmitTextureBlend(i830);
 354 }