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
  31 #include "intel_mipmap_tree.h"
  32 #include "intel_tex.h"
  33
  34 #include "i830_context.h"
  35 #include "i830_reg.h"
  36
  37
  38
  39 static GLuint
  40 translate_texture_format(GLuint mesa_format, GLuint internal_format)
  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_I8; /* Kludge! */
  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_XRGB8888:
  60       return MAPSURF_32BIT | MT_32BIT_XRGB8888;
  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_unit *tUnit = &ctx->Texture.Unit[unit];
 118    struct gl_texture_object *tObj = tUnit->_Current;
 119    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 120    struct gl_texture_image *firstImage;
 121    GLuint *state = i830->state.Tex[unit], format, pitch;
 122    GLint lodbias;
 123    GLubyte border[4];
 124
 125    memset(state, 0, sizeof(state));
 126
 127    /*We need to refcount these. */
 128
 129    if (i830->state.tex_buffer[unit] != NULL) {
 130        dri_bo_unreference(i830->state.tex_buffer[unit]);
 131        i830->state.tex_buffer[unit] = NULL;
 132    }
 133
 134    if (!intelObj->imageOverride && !intel_finalize_mipmap_tree(intel, unit))
 135       return GL_FALSE;
 136
 137    /* Get first image here, since intelObj->firstLevel will get set in
 138     * the intel_finalize_mipmap_tree() call above.
 139     */
 140    firstImage = tObj->Image[0][intelObj->firstLevel];
 141
 142    if (intelObj->imageOverride) {
 143       i830->state.tex_buffer[unit] = NULL;
 144       i830->state.tex_offset[unit] = intelObj->textureOffset;
 145
 146       switch (intelObj->depthOverride) {
 147       case 32:
 148          format = MAPSURF_32BIT | MT_32BIT_ARGB8888;
 149          break;
 150       case 24:
 151       default:
 152          format = MAPSURF_32BIT | MT_32BIT_XRGB8888;
 153          break;
 154       case 16:
 155          format = MAPSURF_16BIT | MT_16BIT_RGB565;
 156          break;
 157       }
 158
 159       pitch = intelObj->pitchOverride;
 160    } else {
 161       GLuint dst_x, dst_y;
 162
 163       intel_miptree_get_image_offset(intelObj->mt, intelObj->firstLevel, 0, 0,
 164                                      &dst_x, &dst_y);
 165
 166       dri_bo_reference(intelObj->mt->region->buffer);
 167       i830->state.tex_buffer[unit] = intelObj->mt->region->buffer;
 168       /* XXX: This calculation is probably broken for tiled images with
 169        * a non-page-aligned offset.
 170        */
 171       i830->state.tex_offset[unit] = (dst_x + dst_y * intelObj->mt->pitch) *
 172          intelObj->mt->cpp;
 173
 174       format = translate_texture_format(firstImage->TexFormat,
 175                                         firstImage->InternalFormat);
 176       pitch = intelObj->mt->pitch * intelObj->mt->cpp;
 177    }
 178
 179    state[I830_TEXREG_TM0LI] = (_3DSTATE_LOAD_STATE_IMMEDIATE_2 |
 180                                (LOAD_TEXTURE_MAP0 << unit) | 4);
 181
 182    state[I830_TEXREG_TM0S1] =
 183       (((firstImage->Height - 1) << TM0S1_HEIGHT_SHIFT) |
 184        ((firstImage->Width - 1) << TM0S1_WIDTH_SHIFT) | format);
 185
 186    if (intelObj->mt->region->tiling != I915_TILING_NONE) {
 187       state[I830_TEXREG_TM0S1] |= TM0S1_TILED_SURFACE;
 188       if (intelObj->mt->region->tiling == I915_TILING_Y)
 189          state[I830_TEXREG_TM0S1] |= TM0S1_TILE_WALK;
 190    }
 191
 192    state[I830_TEXREG_TM0S2] =
 193       ((((pitch / 4) - 1) << TM0S2_PITCH_SHIFT) | TM0S2_CUBE_FACE_ENA_MASK);
 194
 195    {
 196       if (tObj->Target == GL_TEXTURE_CUBE_MAP)
 197          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit) |
 198                                     CUBE_NEGX_ENABLE |
 199                                     CUBE_POSX_ENABLE |
 200                                     CUBE_NEGY_ENABLE |
 201                                     CUBE_POSY_ENABLE |
 202                                     CUBE_NEGZ_ENABLE | CUBE_POSZ_ENABLE);
 203       else
 204          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit));
 205    }
 206
 207
 208
 209
 210    {
 211       GLuint minFilt, mipFilt, magFilt;
 212
 213       switch (tObj->MinFilter) {
 214       case GL_NEAREST:
 215          minFilt = FILTER_NEAREST;
 216          mipFilt = MIPFILTER_NONE;
 217          break;
 218       case GL_LINEAR:
 219          minFilt = FILTER_LINEAR;
 220          mipFilt = MIPFILTER_NONE;
 221          break;
 222       case GL_NEAREST_MIPMAP_NEAREST:
 223          minFilt = FILTER_NEAREST;
 224          mipFilt = MIPFILTER_NEAREST;
 225          break;
 226       case GL_LINEAR_MIPMAP_NEAREST:
 227          minFilt = FILTER_LINEAR;
 228          mipFilt = MIPFILTER_NEAREST;
 229          break;
 230       case GL_NEAREST_MIPMAP_LINEAR:
 231          minFilt = FILTER_NEAREST;
 232          mipFilt = MIPFILTER_LINEAR;
 233          break;
 234       case GL_LINEAR_MIPMAP_LINEAR:
 235          minFilt = FILTER_LINEAR;
 236          mipFilt = MIPFILTER_LINEAR;
 237          break;
 238       default:
 239          return GL_FALSE;
 240       }
 241
 242       if (tObj->MaxAnisotropy > 1.0) {
 243          minFilt = FILTER_ANISOTROPIC;
 244          magFilt = FILTER_ANISOTROPIC;
 245       }
 246       else {
 247          switch (tObj->MagFilter) {
 248          case GL_NEAREST:
 249             magFilt = FILTER_NEAREST;
 250             break;
 251          case GL_LINEAR:
 252             magFilt = FILTER_LINEAR;
 253             break;
 254          default:
 255             return GL_FALSE;
 256          }
 257       }
 258
 259       lodbias = (int) ((tUnit->LodBias + tObj->LodBias) * 16.0);
 260       if (lodbias < -64)
 261           lodbias = -64;
 262       if (lodbias > 63)
 263           lodbias = 63;
 264
 265       state[I830_TEXREG_TM0S3] = ((lodbias << TM0S3_LOD_BIAS_SHIFT) &
 266                                   TM0S3_LOD_BIAS_MASK);
 267 #if 0
 268       /* YUV conversion:
 269        */
 270       if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
 271           firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
 272          state[I830_TEXREG_TM0S3] |= SS2_COLORSPACE_CONVERSION;
 273 #endif
 274
 275       state[I830_TEXREG_TM0S3] |= ((intelObj->lastLevel -
 276                                     intelObj->firstLevel) *
 277                                    4) << TM0S3_MIN_MIP_SHIFT;
 278
 279       state[I830_TEXREG_TM0S3] |= ((minFilt << TM0S3_MIN_FILTER_SHIFT) |
 280                                    (mipFilt << TM0S3_MIP_FILTER_SHIFT) |
 281                                    (magFilt << TM0S3_MAG_FILTER_SHIFT));
 282    }
 283
 284    {
 285       GLenum ws = tObj->WrapS;
 286       GLenum wt = tObj->WrapT;
 287
 288
 289       /* 3D textures not available on i830
 290        */
 291       if (tObj->Target == GL_TEXTURE_3D)
 292          return GL_FALSE;
 293
 294       state[I830_TEXREG_MCS] = (_3DSTATE_MAP_COORD_SET_CMD |
 295                                 MAP_UNIT(unit) |
 296                                 ENABLE_TEXCOORD_PARAMS |
 297                                 ss3 |
 298                                 ENABLE_ADDR_V_CNTL |
 299                                 TEXCOORD_ADDR_V_MODE(translate_wrap_mode(wt))
 300                                 | ENABLE_ADDR_U_CNTL |
 301                                 TEXCOORD_ADDR_U_MODE(translate_wrap_mode
 302                                                      (ws)));
 303    }
 304
 305    /* convert border color from float to ubyte */
 306    CLAMPED_FLOAT_TO_UBYTE(border[0], tObj->BorderColor[0]);
 307    CLAMPED_FLOAT_TO_UBYTE(border[1], tObj->BorderColor[1]);
 308    CLAMPED_FLOAT_TO_UBYTE(border[2], tObj->BorderColor[2]);
 309    CLAMPED_FLOAT_TO_UBYTE(border[3], tObj->BorderColor[3]);
 310
 311    state[I830_TEXREG_TM0S4] = INTEL_PACKCOLOR8888(border[0],
 312                                                   border[1],
 313                                                   border[2],
 314                                                   border[3]);
 315
 316
 317    I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(unit), GL_TRUE);
 318    /* memcmp was already disabled, but definitely won't work as the
 319     * region might now change and that wouldn't be detected:
 320     */
 321    I830_STATECHANGE(i830, I830_UPLOAD_TEX(unit));
 322    return GL_TRUE;
 323 }
 324
 325
 326
 327
 328 void
 329 i830UpdateTextureState(struct intel_context *intel)
 330 {
 331    struct i830_context *i830 = i830_context(&intel->ctx);
 332    GLboolean ok = GL_TRUE;
 333    GLuint i;
 334
 335    for (i = 0; i < I830_TEX_UNITS && ok; i++) {
 336       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 337       case TEXTURE_1D_BIT:
 338       case TEXTURE_2D_BIT:
 339       case TEXTURE_CUBE_BIT:
 340          ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_NORMAL);
 341          break;
 342       case TEXTURE_RECT_BIT:
 343          ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_IN_TEXELUNITS);
 344          break;
 345       case 0:{
 346          struct i830_context *i830 = i830_context(&intel->ctx);
 347          if (i830->state.active & I830_UPLOAD_TEX(i))
 348             I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(i), GL_FALSE);
 349
 350          if (i830->state.tex_buffer[i] != NULL) {
 351             dri_bo_unreference(i830->state.tex_buffer[i]);
 352             i830->state.tex_buffer[i] = NULL;
 353          }
 354          break;
 355       }
 356       case TEXTURE_3D_BIT:
 357       default:
 358          ok = GL_FALSE;
 359          break;
 360       }
 361    }
 362
 363    FALLBACK(intel, I830_FALLBACK_TEXTURE, !ok);
 364
 365    if (ok)
 366       i830EmitTextureBlend(i830);
 367 }