src/mesa/drivers/dri/i915/i830_texstate.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 VMware, Inc.
   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 VMWARE 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/colormac.h"
  31 #include "main/macros.h"
  32 #include "main/samplerobj.h"
  33
  34 #include "intel_mipmap_tree.h"
  35 #include "intel_tex.h"
  36
  37 #include "i830_context.h"
  38 #include "i830_reg.h"
  39 #include "intel_chipset.h"
  40
  41
  42 static GLuint
  43 translate_texture_format(GLuint mesa_format)
  44 {
  45    switch (mesa_format) {
  46    case MESA_FORMAT_L8:
  47       return MAPSURF_8BIT | MT_8BIT_L8;
  48    case MESA_FORMAT_I8:
  49       return MAPSURF_8BIT | MT_8BIT_I8;
  50    case MESA_FORMAT_A8:
  51       return MAPSURF_8BIT | MT_8BIT_I8; /* Kludge! */
  52    case MESA_FORMAT_AL88:
  53       return MAPSURF_16BIT | MT_16BIT_AY88;
  54    case MESA_FORMAT_RGB565:
  55       return MAPSURF_16BIT | MT_16BIT_RGB565;
  56    case MESA_FORMAT_ARGB1555:
  57       return MAPSURF_16BIT | MT_16BIT_ARGB1555;
  58    case MESA_FORMAT_ARGB4444:
  59       return MAPSURF_16BIT | MT_16BIT_ARGB4444;
  60    case MESA_FORMAT_ARGB8888:
  61       return MAPSURF_32BIT | MT_32BIT_ARGB8888;
  62    case MESA_FORMAT_XRGB8888:
  63       return MAPSURF_32BIT | MT_32BIT_XRGB8888;
  64    case MESA_FORMAT_YCBCR_REV:
  65       return (MAPSURF_422 | MT_422_YCRCB_NORMAL);
  66    case MESA_FORMAT_YCBCR:
  67       return (MAPSURF_422 | MT_422_YCRCB_SWAPY);
  68    case MESA_FORMAT_RGB_FXT1:
  69    case MESA_FORMAT_RGBA_FXT1:
  70       return (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
  71    case MESA_FORMAT_RGBA_DXT1:
  72    case MESA_FORMAT_RGB_DXT1:
  73       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
  74    case MESA_FORMAT_RGBA_DXT3:
  75       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
  76    case MESA_FORMAT_RGBA_DXT5:
  77       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
  78    default:
  79       fprintf(stderr, "%s: bad image format %s\n", __FUNCTION__,
  80               _mesa_get_format_name(mesa_format));
  81       abort();
  82       return 0;
  83    }
  84 }
  85
  86
  87
  88
  89 /* The i915 (and related graphics cores) do not support GL_CLAMP.  The
  90  * Intel drivers for "other operating systems" implement GL_CLAMP as
  91  * GL_CLAMP_TO_EDGE, so the same is done here.
  92  */
  93 static GLuint
  94 translate_wrap_mode(GLenum wrap)
  95 {
  96    switch (wrap) {
  97    case GL_REPEAT:
  98       return TEXCOORDMODE_WRAP;
  99    case GL_CLAMP:
 100    case GL_CLAMP_TO_EDGE:
 101       return TEXCOORDMODE_CLAMP;        /* not really correct */
 102    case GL_CLAMP_TO_BORDER:
 103       return TEXCOORDMODE_CLAMP_BORDER;
 104    case GL_MIRRORED_REPEAT:
 105       return TEXCOORDMODE_MIRROR;
 106    default:
 107       return TEXCOORDMODE_WRAP;
 108    }
 109 }
 110
 111
 112 /* Recalculate all state from scratch.  Perhaps not the most
 113  * efficient, but this has gotten complex enough that we need
 114  * something which is understandable and reliable.
 115  */
 116 static bool
 117 i830_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
 118 {
 119    struct gl_context *ctx = &intel->ctx;
 120    struct i830_context *i830 = i830_context(ctx);
 121    struct gl_texture_unit *tUnit = &ctx->Texture.Unit[unit];
 122    struct gl_texture_object *tObj = tUnit->_Current;
 123    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 124    struct gl_texture_image *firstImage;
 125    struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit);
 126    GLuint *state = i830->state.Tex[unit], format, pitch;
 127    GLint lodbias;
 128    GLubyte border[4];
 129    GLuint dst_x, dst_y;
 130
 131    memset(state, 0, sizeof(*state));
 132
 133    /*We need to refcount these. */
 134
 135    if (i830->state.tex_buffer[unit] != NULL) {
 136        drm_intel_bo_unreference(i830->state.tex_buffer[unit]);
 137        i830->state.tex_buffer[unit] = NULL;
 138    }
 139
 140    if (!intel_finalize_mipmap_tree(intel, unit))
 141       return false;
 142
 143    /* Get first image here, since intelObj->firstLevel will get set in
 144     * the intel_finalize_mipmap_tree() call above.
 145     */
 146    firstImage = tObj->Image[0][tObj->BaseLevel];
 147
 148    intel_miptree_get_image_offset(intelObj->mt, tObj->BaseLevel, 0,
 149                                   &dst_x, &dst_y);
 150
 151    drm_intel_bo_reference(intelObj->mt->region->bo);
 152    i830->state.tex_buffer[unit] = intelObj->mt->region->bo;
 153    pitch = intelObj->mt->region->pitch;
 154
 155    /* XXX: This calculation is probably broken for tiled images with
 156     * a non-page-aligned offset.
 157     */
 158    i830->state.tex_offset[unit] = dst_x * intelObj->mt->cpp + dst_y * pitch;
 159
 160    format = translate_texture_format(firstImage->TexFormat);
 161
 162    state[I830_TEXREG_TM0LI] = (_3DSTATE_LOAD_STATE_IMMEDIATE_2 |
 163                                (LOAD_TEXTURE_MAP0 << unit) | 4);
 164
 165    state[I830_TEXREG_TM0S1] =
 166       (((firstImage->Height - 1) << TM0S1_HEIGHT_SHIFT) |
 167        ((firstImage->Width - 1) << TM0S1_WIDTH_SHIFT) | format);
 168
 169    if (intelObj->mt->region->tiling != I915_TILING_NONE) {
 170       state[I830_TEXREG_TM0S1] |= TM0S1_TILED_SURFACE;
 171       if (intelObj->mt->region->tiling == I915_TILING_Y)
 172          state[I830_TEXREG_TM0S1] |= TM0S1_TILE_WALK;
 173    }
 174
 175    state[I830_TEXREG_TM0S2] =
 176       ((((pitch / 4) - 1) << TM0S2_PITCH_SHIFT) | TM0S2_CUBE_FACE_ENA_MASK);
 177
 178    {
 179       if (tObj->Target == GL_TEXTURE_CUBE_MAP)
 180          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit) |
 181                                     CUBE_NEGX_ENABLE |
 182                                     CUBE_POSX_ENABLE |
 183                                     CUBE_NEGY_ENABLE |
 184                                     CUBE_POSY_ENABLE |
 185                                     CUBE_NEGZ_ENABLE | CUBE_POSZ_ENABLE);
 186       else
 187          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit));
 188    }
 189
 190
 191
 192
 193    {
 194       GLuint minFilt, mipFilt, magFilt;
 195       float maxlod;
 196       uint32_t minlod_fixed, maxlod_fixed;
 197
 198       switch (sampler->MinFilter) {
 199       case GL_NEAREST:
 200          minFilt = FILTER_NEAREST;
 201          mipFilt = MIPFILTER_NONE;
 202          break;
 203       case GL_LINEAR:
 204          minFilt = FILTER_LINEAR;
 205          mipFilt = MIPFILTER_NONE;
 206          break;
 207       case GL_NEAREST_MIPMAP_NEAREST:
 208          minFilt = FILTER_NEAREST;
 209          mipFilt = MIPFILTER_NEAREST;
 210          break;
 211       case GL_LINEAR_MIPMAP_NEAREST:
 212          minFilt = FILTER_LINEAR;
 213          mipFilt = MIPFILTER_NEAREST;
 214          break;
 215       case GL_NEAREST_MIPMAP_LINEAR:
 216          minFilt = FILTER_NEAREST;
 217          mipFilt = MIPFILTER_LINEAR;
 218          break;
 219       case GL_LINEAR_MIPMAP_LINEAR:
 220          minFilt = FILTER_LINEAR;
 221          mipFilt = MIPFILTER_LINEAR;
 222          break;
 223       default:
 224          return false;
 225       }
 226
 227       if (sampler->MaxAnisotropy > 1.0) {
 228          minFilt = FILTER_ANISOTROPIC;
 229          magFilt = FILTER_ANISOTROPIC;
 230       }
 231       else {
 232          switch (sampler->MagFilter) {
 233          case GL_NEAREST:
 234             magFilt = FILTER_NEAREST;
 235             break;
 236          case GL_LINEAR:
 237             magFilt = FILTER_LINEAR;
 238             break;
 239          default:
 240             return false;
 241          }
 242       }
 243
 244       lodbias = (int) ((tUnit->LodBias + sampler->LodBias) * 16.0);
 245       if (lodbias < -64)
 246           lodbias = -64;
 247       if (lodbias > 63)
 248           lodbias = 63;
 249
 250       state[I830_TEXREG_TM0S3] = ((lodbias << TM0S3_LOD_BIAS_SHIFT) &
 251                                   TM0S3_LOD_BIAS_MASK);
 252 #if 0
 253       /* YUV conversion:
 254        */
 255       if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
 256           firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
 257          state[I830_TEXREG_TM0S3] |= SS2_COLORSPACE_CONVERSION;
 258 #endif
 259
 260       /* We get one field with fraction bits for the maximum
 261        * addressable (smallest resolution) LOD.  Use it to cover both
 262        * MAX_LEVEL and MAX_LOD.
 263        */
 264       minlod_fixed = U_FIXED(CLAMP(sampler->MinLod, 0.0, 11), 4);
 265       maxlod = MIN2(sampler->MaxLod, tObj->_MaxLevel - tObj->BaseLevel);
 266       if (intel->intelScreen->deviceID == PCI_CHIP_I855_GM ||
 267           intel->intelScreen->deviceID == PCI_CHIP_I865_G) {
 268          maxlod_fixed = U_FIXED(CLAMP(maxlod, 0.0, 11.75), 2);
 269          maxlod_fixed = MAX2(maxlod_fixed, (minlod_fixed + 3) >> 2);
 270          state[I830_TEXREG_TM0S3] |= maxlod_fixed << TM0S3_MIN_MIP_SHIFT;
 271          state[I830_TEXREG_TM0S2] |= TM0S2_LOD_PRECLAMP;
 272       } else {
 273          maxlod_fixed = U_FIXED(CLAMP(maxlod, 0.0, 11), 0);
 274          maxlod_fixed = MAX2(maxlod_fixed, (minlod_fixed + 15) >> 4);
 275          state[I830_TEXREG_TM0S3] |= maxlod_fixed << TM0S3_MIN_MIP_SHIFT_830;
 276       }
 277       state[I830_TEXREG_TM0S3] |= minlod_fixed << TM0S3_MAX_MIP_SHIFT;
 278       state[I830_TEXREG_TM0S3] |= ((minFilt << TM0S3_MIN_FILTER_SHIFT) |
 279                                    (mipFilt << TM0S3_MIP_FILTER_SHIFT) |
 280                                    (magFilt << TM0S3_MAG_FILTER_SHIFT));
 281    }
 282
 283    {
 284       GLenum ws = sampler->WrapS;
 285       GLenum wt = sampler->WrapT;
 286
 287
 288       /* 3D textures not available on i830
 289        */
 290       if (tObj->Target == GL_TEXTURE_3D)
 291          return false;
 292
 293       state[I830_TEXREG_MCS] = (_3DSTATE_MAP_COORD_SET_CMD |
 294                                 MAP_UNIT(unit) |
 295                                 ENABLE_TEXCOORD_PARAMS |
 296                                 ss3 |
 297                                 ENABLE_ADDR_V_CNTL |
 298                                 TEXCOORD_ADDR_V_MODE(translate_wrap_mode(wt))
 299                                 | ENABLE_ADDR_U_CNTL |
 300                                 TEXCOORD_ADDR_U_MODE(translate_wrap_mode
 301                                                      (ws)));
 302    }
 303
 304    /* convert border color from float to ubyte */
 305    CLAMPED_FLOAT_TO_UBYTE(border[0], sampler->BorderColor.f[0]);
 306    CLAMPED_FLOAT_TO_UBYTE(border[1], sampler->BorderColor.f[1]);
 307    CLAMPED_FLOAT_TO_UBYTE(border[2], sampler->BorderColor.f[2]);
 308    CLAMPED_FLOAT_TO_UBYTE(border[3], sampler->BorderColor.f[3]);
 309
 310    state[I830_TEXREG_TM0S4] = PACK_COLOR_8888(border[3],
 311                                               border[0],
 312                                               border[1],
 313                                               border[2]);
 314
 315    I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(unit), true);
 316    /* memcmp was already disabled, but definitely won't work as the
 317     * region might now change and that wouldn't be detected:
 318     */
 319    I830_STATECHANGE(i830, I830_UPLOAD_TEX(unit));
 320    return true;
 321 }
 322
 323
 324
 325
 326 void
 327 i830UpdateTextureState(struct intel_context *intel)
 328 {
 329    struct i830_context *i830 = i830_context(&intel->ctx);
 330    bool ok = true;
 331    GLuint i;
 332
 333    for (i = 0; i < I830_TEX_UNITS && ok; i++) {
 334       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 335       case TEXTURE_1D_BIT:
 336       case TEXTURE_2D_BIT:
 337       case TEXTURE_CUBE_BIT:
 338          ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_NORMAL);
 339          break;
 340       case TEXTURE_RECT_BIT:
 341          ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_IN_TEXELUNITS);
 342          break;
 343       case 0:{
 344          struct i830_context *i830 = i830_context(&intel->ctx);
 345          if (i830->state.active & I830_UPLOAD_TEX(i))
 346             I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(i), false);
 347
 348          if (i830->state.tex_buffer[i] != NULL) {
 349             drm_intel_bo_unreference(i830->state.tex_buffer[i]);
 350             i830->state.tex_buffer[i] = NULL;
 351          }
 352          break;
 353       }
 354       case TEXTURE_3D_BIT:
 355       default:
 356          ok = false;
 357          break;
 358       }
 359    }
 360
 361    FALLBACK(intel, I830_FALLBACK_TEXTURE, !ok);
 362
 363    if (ok)
 364       i830EmitTextureBlend(i830);
 365 }