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    GLubyte border[4];
 126
 127    memset(state, 0, sizeof(state));
 128
 129    /*We need to refcount these. */
 130
 131    if (i830->state.tex_buffer[unit] != NULL) {
 132        dri_bo_unreference(i830->state.tex_buffer[unit]);
 133        i830->state.tex_buffer[unit] = NULL;
 134    }
 135
 136    if (!intelObj->imageOverride && !intel_finalize_mipmap_tree(intel, unit))
 137       return GL_FALSE;
 138
 139    /* Get first image here, since intelObj->firstLevel will get set in
 140     * the intel_finalize_mipmap_tree() call above.
 141     */
 142    firstImage = tObj->Image[0][intelObj->firstLevel];
 143
 144    if (intelObj->imageOverride) {
 145       i830->state.tex_buffer[unit] = NULL;
 146       i830->state.tex_offset[unit] = intelObj->textureOffset;
 147
 148       switch (intelObj->depthOverride) {
 149       case 32:
 150          format = MAPSURF_32BIT | MT_32BIT_ARGB8888;
 151          break;
 152       case 24:
 153       default:
 154          format = MAPSURF_32BIT | MT_32BIT_XRGB8888;
 155          break;
 156       case 16:
 157          format = MAPSURF_16BIT | MT_16BIT_RGB565;
 158          break;
 159       }
 160
 161       pitch = intelObj->pitchOverride;
 162    } else {
 163       dri_bo_reference(intelObj->mt->region->buffer);
 164       i830->state.tex_buffer[unit] = intelObj->mt->region->buffer;
 165       i830->state.tex_offset[unit] =
 166          intel_miptree_image_offset(intelObj->mt, 0, intelObj->firstLevel, 0);
 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_TM0S1] =
 177       (((firstImage->Height - 1) << TM0S1_HEIGHT_SHIFT) |
 178        ((firstImage->Width - 1) << TM0S1_WIDTH_SHIFT) | format);
 179
 180    if (intelObj->mt->region->tiling != I915_TILING_NONE) {
 181       state[I830_TEXREG_TM0S1] |= TM0S1_TILED_SURFACE;
 182       if (intelObj->mt->region->tiling == I915_TILING_Y)
 183          state[I830_TEXREG_TM0S1] |= TM0S1_TILE_WALK;
 184    }
 185
 186    state[I830_TEXREG_TM0S2] =
 187       ((((pitch / 4) - 1) << TM0S2_PITCH_SHIFT) | TM0S2_CUBE_FACE_ENA_MASK);
 188
 189    {
 190       if (tObj->Target == GL_TEXTURE_CUBE_MAP)
 191          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit) |
 192                                     CUBE_NEGX_ENABLE |
 193                                     CUBE_POSX_ENABLE |
 194                                     CUBE_NEGY_ENABLE |
 195                                     CUBE_POSY_ENABLE |
 196                                     CUBE_NEGZ_ENABLE | CUBE_POSZ_ENABLE);
 197       else
 198          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit));
 199    }
 200
 201
 202
 203
 204    {
 205       GLuint minFilt, mipFilt, magFilt;
 206
 207       switch (tObj->MinFilter) {
 208       case GL_NEAREST:
 209          minFilt = FILTER_NEAREST;
 210          mipFilt = MIPFILTER_NONE;
 211          break;
 212       case GL_LINEAR:
 213          minFilt = FILTER_LINEAR;
 214          mipFilt = MIPFILTER_NONE;
 215          break;
 216       case GL_NEAREST_MIPMAP_NEAREST:
 217          minFilt = FILTER_NEAREST;
 218          mipFilt = MIPFILTER_NEAREST;
 219          break;
 220       case GL_LINEAR_MIPMAP_NEAREST:
 221          minFilt = FILTER_LINEAR;
 222          mipFilt = MIPFILTER_NEAREST;
 223          break;
 224       case GL_NEAREST_MIPMAP_LINEAR:
 225          minFilt = FILTER_NEAREST;
 226          mipFilt = MIPFILTER_LINEAR;
 227          break;
 228       case GL_LINEAR_MIPMAP_LINEAR:
 229          minFilt = FILTER_LINEAR;
 230          mipFilt = MIPFILTER_LINEAR;
 231          break;
 232       default:
 233          return GL_FALSE;
 234       }
 235
 236       if (tObj->MaxAnisotropy > 1.0) {
 237          minFilt = FILTER_ANISOTROPIC;
 238          magFilt = FILTER_ANISOTROPIC;
 239       }
 240       else {
 241          switch (tObj->MagFilter) {
 242          case GL_NEAREST:
 243             magFilt = FILTER_NEAREST;
 244             break;
 245          case GL_LINEAR:
 246             magFilt = FILTER_LINEAR;
 247             break;
 248          default:
 249             return GL_FALSE;
 250          }
 251       }
 252
 253       lodbias = (int) ((tUnit->LodBias + tObj->LodBias) * 16.0);
 254       if (lodbias < -64)
 255           lodbias = -64;
 256       if (lodbias > 63)
 257           lodbias = 63;
 258
 259       state[I830_TEXREG_TM0S3] = ((lodbias << TM0S3_LOD_BIAS_SHIFT) &
 260                                   TM0S3_LOD_BIAS_MASK);
 261 #if 0
 262       /* YUV conversion:
 263        */
 264       if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
 265           firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
 266          state[I830_TEXREG_TM0S3] |= SS2_COLORSPACE_CONVERSION;
 267 #endif
 268
 269       state[I830_TEXREG_TM0S3] |= ((intelObj->lastLevel -
 270                                     intelObj->firstLevel) *
 271                                    4) << TM0S3_MIN_MIP_SHIFT;
 272
 273       state[I830_TEXREG_TM0S3] |= ((minFilt << TM0S3_MIN_FILTER_SHIFT) |
 274                                    (mipFilt << TM0S3_MIP_FILTER_SHIFT) |
 275                                    (magFilt << TM0S3_MAG_FILTER_SHIFT));
 276    }
 277
 278    {
 279       GLenum ws = tObj->WrapS;
 280       GLenum wt = tObj->WrapT;
 281
 282
 283       /* 3D textures not available on i830
 284        */
 285       if (tObj->Target == GL_TEXTURE_3D)
 286          return GL_FALSE;
 287
 288       state[I830_TEXREG_MCS] = (_3DSTATE_MAP_COORD_SET_CMD |
 289                                 MAP_UNIT(unit) |
 290                                 ENABLE_TEXCOORD_PARAMS |
 291                                 ss3 |
 292                                 ENABLE_ADDR_V_CNTL |
 293                                 TEXCOORD_ADDR_V_MODE(translate_wrap_mode(wt))
 294                                 | ENABLE_ADDR_U_CNTL |
 295                                 TEXCOORD_ADDR_U_MODE(translate_wrap_mode
 296                                                      (ws)));
 297    }
 298
 299    /* convert border color from float to ubyte */
 300    CLAMPED_FLOAT_TO_UBYTE(border[0], tObj->BorderColor[0]);
 301    CLAMPED_FLOAT_TO_UBYTE(border[1], tObj->BorderColor[1]);
 302    CLAMPED_FLOAT_TO_UBYTE(border[2], tObj->BorderColor[2]);
 303    CLAMPED_FLOAT_TO_UBYTE(border[3], tObj->BorderColor[3]);
 304
 305    state[I830_TEXREG_TM0S4] = INTEL_PACKCOLOR8888(border[0],
 306                                                   border[1],
 307                                                   border[2],
 308                                                   border[3]);
 309
 310
 311    I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(unit), GL_TRUE);
 312    /* memcmp was already disabled, but definitely won't work as the
 313     * region might now change and that wouldn't be detected:
 314     */
 315    I830_STATECHANGE(i830, I830_UPLOAD_TEX(unit));
 316    return GL_TRUE;
 317 }
 318
 319
 320
 321
 322 void
 323 i830UpdateTextureState(struct intel_context *intel)
 324 {
 325    struct i830_context *i830 = i830_context(&intel->ctx);
 326    GLboolean ok = GL_TRUE;
 327    GLuint i;
 328
 329    for (i = 0; i < I830_TEX_UNITS && ok; i++) {
 330       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 331       case TEXTURE_1D_BIT:
 332       case TEXTURE_2D_BIT:
 333       case TEXTURE_CUBE_BIT:
 334          ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_NORMAL);
 335          break;
 336       case TEXTURE_RECT_BIT:
 337          ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_IN_TEXELUNITS);
 338          break;
 339       case 0:{
 340          struct i830_context *i830 = i830_context(&intel->ctx);
 341          if (i830->state.active & I830_UPLOAD_TEX(i))
 342             I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(i), GL_FALSE);
 343
 344          if (i830->state.tex_buffer[i] != NULL) {
 345             dri_bo_unreference(i830->state.tex_buffer[i]);
 346             i830->state.tex_buffer[i] = NULL;
 347          }
 348          break;
 349       }
 350       case TEXTURE_3D_BIT:
 351       default:
 352          ok = GL_FALSE;
 353          break;
 354       }
 355    }
 356
 357    FALLBACK(intel, I830_FALLBACK_TEXTURE, !ok);
 358
 359    if (ok)
 360       i830EmitTextureBlend(i830);
 361 }