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       if (internal_format == GL_RGB)
  59          return MAPSURF_32BIT | MT_32BIT_XRGB8888;
  60       else
  61          return MAPSURF_32BIT | MT_32BIT_ARGB8888;
  62    case MESA_FORMAT_YCBCR_REV:
  63       return (MAPSURF_422 | MT_422_YCRCB_NORMAL);
  64    case MESA_FORMAT_YCBCR:
  65       return (MAPSURF_422 | MT_422_YCRCB_SWAPY);
  66    case MESA_FORMAT_RGB_FXT1:
  67    case MESA_FORMAT_RGBA_FXT1:
  68       return (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
  69    case MESA_FORMAT_RGBA_DXT1:
  70    case MESA_FORMAT_RGB_DXT1:
  71       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
  72    case MESA_FORMAT_RGBA_DXT3:
  73       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
  74    case MESA_FORMAT_RGBA_DXT5:
  75       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
  76    default:
  77       fprintf(stderr, "%s: bad image format %x\n", __FUNCTION__, mesa_format);
  78       abort();
  79       return 0;
  80    }
  81 }
  82
  83
  84
  85
  86 /* The i915 (and related graphics cores) do not support GL_CLAMP.  The
  87  * Intel drivers for "other operating systems" implement GL_CLAMP as
  88  * GL_CLAMP_TO_EDGE, so the same is done here.
  89  */
  90 static GLuint
  91 translate_wrap_mode(GLenum wrap)
  92 {
  93    switch (wrap) {
  94    case GL_REPEAT:
  95       return TEXCOORDMODE_WRAP;
  96    case GL_CLAMP:
  97    case GL_CLAMP_TO_EDGE:
  98       return TEXCOORDMODE_CLAMP;        /* not really correct */
  99    case GL_CLAMP_TO_BORDER:
 100       return TEXCOORDMODE_CLAMP_BORDER;
 101    case GL_MIRRORED_REPEAT:
 102       return TEXCOORDMODE_MIRROR;
 103    default:
 104       return TEXCOORDMODE_WRAP;
 105    }
 106 }
 107
 108
 109 /* Recalculate all state from scratch.  Perhaps not the most
 110  * efficient, but this has gotten complex enough that we need
 111  * something which is understandable and reliable.
 112  */
 113 static GLboolean
 114 i830_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
 115 {
 116    GLcontext *ctx = &intel->ctx;
 117    struct i830_context *i830 = i830_context(ctx);
 118    struct gl_texture_unit *tUnit = &ctx->Texture.Unit[unit];
 119    struct gl_texture_object *tObj = tUnit->_Current;
 120    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 121    struct gl_texture_image *firstImage;
 122    GLuint *state = i830->state.Tex[unit], format, pitch;
 123    GLint lodbias;
 124    GLubyte border[4];
 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       GLuint dst_x, dst_y;
 163
 164       intel_miptree_get_image_offset(intelObj->mt, intelObj->firstLevel, 0, 0,
 165                                      &dst_x, &dst_y);
 166
 167       dri_bo_reference(intelObj->mt->region->buffer);
 168       i830->state.tex_buffer[unit] = intelObj->mt->region->buffer;
 169       /* XXX: This calculation is probably broken for tiled images with
 170        * a non-page-aligned offset.
 171        */
 172       i830->state.tex_offset[unit] = (dst_x + dst_y * intelObj->mt->pitch) *
 173          intelObj->mt->cpp;
 174
 175       format = translate_texture_format(firstImage->TexFormat,
 176                                         firstImage->InternalFormat);
 177       pitch = intelObj->mt->pitch * intelObj->mt->cpp;
 178    }
 179
 180    state[I830_TEXREG_TM0LI] = (_3DSTATE_LOAD_STATE_IMMEDIATE_2 |
 181                                (LOAD_TEXTURE_MAP0 << unit) | 4);
 182
 183    state[I830_TEXREG_TM0S1] =
 184       (((firstImage->Height - 1) << TM0S1_HEIGHT_SHIFT) |
 185        ((firstImage->Width - 1) << TM0S1_WIDTH_SHIFT) | format);
 186
 187    if (intelObj->mt->region->tiling != I915_TILING_NONE) {
 188       state[I830_TEXREG_TM0S1] |= TM0S1_TILED_SURFACE;
 189       if (intelObj->mt->region->tiling == I915_TILING_Y)
 190          state[I830_TEXREG_TM0S1] |= TM0S1_TILE_WALK;
 191    }
 192
 193    state[I830_TEXREG_TM0S2] =
 194       ((((pitch / 4) - 1) << TM0S2_PITCH_SHIFT) | TM0S2_CUBE_FACE_ENA_MASK);
 195
 196    {
 197       if (tObj->Target == GL_TEXTURE_CUBE_MAP)
 198          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit) |
 199                                     CUBE_NEGX_ENABLE |
 200                                     CUBE_POSX_ENABLE |
 201                                     CUBE_NEGY_ENABLE |
 202                                     CUBE_POSY_ENABLE |
 203                                     CUBE_NEGZ_ENABLE | CUBE_POSZ_ENABLE);
 204       else
 205          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit));
 206    }
 207
 208
 209
 210
 211    {
 212       GLuint minFilt, mipFilt, magFilt;
 213
 214       switch (tObj->MinFilter) {
 215       case GL_NEAREST:
 216          minFilt = FILTER_NEAREST;
 217          mipFilt = MIPFILTER_NONE;
 218          break;
 219       case GL_LINEAR:
 220          minFilt = FILTER_LINEAR;
 221          mipFilt = MIPFILTER_NONE;
 222          break;
 223       case GL_NEAREST_MIPMAP_NEAREST:
 224          minFilt = FILTER_NEAREST;
 225          mipFilt = MIPFILTER_NEAREST;
 226          break;
 227       case GL_LINEAR_MIPMAP_NEAREST:
 228          minFilt = FILTER_LINEAR;
 229          mipFilt = MIPFILTER_NEAREST;
 230          break;
 231       case GL_NEAREST_MIPMAP_LINEAR:
 232          minFilt = FILTER_NEAREST;
 233          mipFilt = MIPFILTER_LINEAR;
 234          break;
 235       case GL_LINEAR_MIPMAP_LINEAR:
 236          minFilt = FILTER_LINEAR;
 237          mipFilt = MIPFILTER_LINEAR;
 238          break;
 239       default:
 240          return GL_FALSE;
 241       }
 242
 243       if (tObj->MaxAnisotropy > 1.0) {
 244          minFilt = FILTER_ANISOTROPIC;
 245          magFilt = FILTER_ANISOTROPIC;
 246       }
 247       else {
 248          switch (tObj->MagFilter) {
 249          case GL_NEAREST:
 250             magFilt = FILTER_NEAREST;
 251             break;
 252          case GL_LINEAR:
 253             magFilt = FILTER_LINEAR;
 254             break;
 255          default:
 256             return GL_FALSE;
 257          }
 258       }
 259
 260       lodbias = (int) ((tUnit->LodBias + tObj->LodBias) * 16.0);
 261       if (lodbias < -64)
 262           lodbias = -64;
 263       if (lodbias > 63)
 264           lodbias = 63;
 265
 266       state[I830_TEXREG_TM0S3] = ((lodbias << TM0S3_LOD_BIAS_SHIFT) &
 267                                   TM0S3_LOD_BIAS_MASK);
 268 #if 0
 269       /* YUV conversion:
 270        */
 271       if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
 272           firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
 273          state[I830_TEXREG_TM0S3] |= SS2_COLORSPACE_CONVERSION;
 274 #endif
 275
 276       state[I830_TEXREG_TM0S3] |= ((intelObj->lastLevel -
 277                                     intelObj->firstLevel) *
 278                                    4) << TM0S3_MIN_MIP_SHIFT;
 279
 280       state[I830_TEXREG_TM0S3] |= ((minFilt << TM0S3_MIN_FILTER_SHIFT) |
 281                                    (mipFilt << TM0S3_MIP_FILTER_SHIFT) |
 282                                    (magFilt << TM0S3_MAG_FILTER_SHIFT));
 283    }
 284
 285    {
 286       GLenum ws = tObj->WrapS;
 287       GLenum wt = tObj->WrapT;
 288
 289
 290       /* 3D textures not available on i830
 291        */
 292       if (tObj->Target == GL_TEXTURE_3D)
 293          return GL_FALSE;
 294
 295       state[I830_TEXREG_MCS] = (_3DSTATE_MAP_COORD_SET_CMD |
 296                                 MAP_UNIT(unit) |
 297                                 ENABLE_TEXCOORD_PARAMS |
 298                                 ss3 |
 299                                 ENABLE_ADDR_V_CNTL |
 300                                 TEXCOORD_ADDR_V_MODE(translate_wrap_mode(wt))
 301                                 | ENABLE_ADDR_U_CNTL |
 302                                 TEXCOORD_ADDR_U_MODE(translate_wrap_mode
 303                                                      (ws)));
 304    }
 305
 306    /* convert border color from float to ubyte */
 307    CLAMPED_FLOAT_TO_UBYTE(border[0], tObj->BorderColor[0]);
 308    CLAMPED_FLOAT_TO_UBYTE(border[1], tObj->BorderColor[1]);
 309    CLAMPED_FLOAT_TO_UBYTE(border[2], tObj->BorderColor[2]);
 310    CLAMPED_FLOAT_TO_UBYTE(border[3], tObj->BorderColor[3]);
 311
 312    state[I830_TEXREG_TM0S4] = INTEL_PACKCOLOR8888(border[0],
 313                                                   border[1],
 314                                                   border[2],
 315                                                   border[3]);
 316
 317
 318    I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(unit), GL_TRUE);
 319    /* memcmp was already disabled, but definitely won't work as the
 320     * region might now change and that wouldn't be detected:
 321     */
 322    I830_STATECHANGE(i830, I830_UPLOAD_TEX(unit));
 323    return GL_TRUE;
 324 }
 325
 326
 327
 328
 329 void
 330 i830UpdateTextureState(struct intel_context *intel)
 331 {
 332    struct i830_context *i830 = i830_context(&intel->ctx);
 333    GLboolean ok = GL_TRUE;
 334    GLuint i;
 335
 336    for (i = 0; i < I830_TEX_UNITS && ok; i++) {
 337       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 338       case TEXTURE_1D_BIT:
 339       case TEXTURE_2D_BIT:
 340       case TEXTURE_CUBE_BIT:
 341          ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_NORMAL);
 342          break;
 343       case TEXTURE_RECT_BIT:
 344          ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_IN_TEXELUNITS);
 345          break;
 346       case 0:{
 347          struct i830_context *i830 = i830_context(&intel->ctx);
 348          if (i830->state.active & I830_UPLOAD_TEX(i))
 349             I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(i), GL_FALSE);
 350
 351          if (i830->state.tex_buffer[i] != NULL) {
 352             dri_bo_unreference(i830->state.tex_buffer[i]);
 353             i830->state.tex_buffer[i] = NULL;
 354          }
 355          break;
 356       }
 357       case TEXTURE_3D_BIT:
 358       default:
 359          ok = GL_FALSE;
 360          break;
 361       }
 362    }
 363
 364    FALLBACK(intel, I830_FALLBACK_TEXTURE, !ok);
 365
 366    if (ok)
 367       i830EmitTextureBlend(i830);
 368 }