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] = intel_miptree_image_offset(intelObj->mt,
 166                                                                 0, intelObj->
 167                                                                 firstLevel);
 168
 169       format = translate_texture_format(firstImage->TexFormat,
 170                                         firstImage->InternalFormat);
 171       pitch = intelObj->mt->pitch * intelObj->mt->cpp;
 172    }
 173
 174    state[I830_TEXREG_TM0LI] = (_3DSTATE_LOAD_STATE_IMMEDIATE_2 |
 175                                (LOAD_TEXTURE_MAP0 << unit) | 4);
 176
 177    state[I830_TEXREG_TM0S1] =
 178       (((firstImage->Height - 1) << TM0S1_HEIGHT_SHIFT) |
 179        ((firstImage->Width - 1) << TM0S1_WIDTH_SHIFT) | format);
 180
 181    if (intelObj->mt->region->tiling != I915_TILING_NONE) {
 182       state[I830_TEXREG_TM0S1] |= TM0S1_TILED_SURFACE;
 183       if (intelObj->mt->region->tiling == I915_TILING_Y)
 184          state[I830_TEXREG_TM0S1] |= TM0S1_TILE_WALK;
 185    }
 186
 187    state[I830_TEXREG_TM0S2] =
 188       ((((pitch / 4) - 1) << TM0S2_PITCH_SHIFT) | TM0S2_CUBE_FACE_ENA_MASK);
 189
 190    {
 191       if (tObj->Target == GL_TEXTURE_CUBE_MAP)
 192          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit) |
 193                                     CUBE_NEGX_ENABLE |
 194                                     CUBE_POSX_ENABLE |
 195                                     CUBE_NEGY_ENABLE |
 196                                     CUBE_POSY_ENABLE |
 197                                     CUBE_NEGZ_ENABLE | CUBE_POSZ_ENABLE);
 198       else
 199          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit));
 200    }
 201
 202
 203
 204
 205    {
 206       GLuint minFilt, mipFilt, magFilt;
 207
 208       switch (tObj->MinFilter) {
 209       case GL_NEAREST:
 210          minFilt = FILTER_NEAREST;
 211          mipFilt = MIPFILTER_NONE;
 212          break;
 213       case GL_LINEAR:
 214          minFilt = FILTER_LINEAR;
 215          mipFilt = MIPFILTER_NONE;
 216          break;
 217       case GL_NEAREST_MIPMAP_NEAREST:
 218          minFilt = FILTER_NEAREST;
 219          mipFilt = MIPFILTER_NEAREST;
 220          break;
 221       case GL_LINEAR_MIPMAP_NEAREST:
 222          minFilt = FILTER_LINEAR;
 223          mipFilt = MIPFILTER_NEAREST;
 224          break;
 225       case GL_NEAREST_MIPMAP_LINEAR:
 226          minFilt = FILTER_NEAREST;
 227          mipFilt = MIPFILTER_LINEAR;
 228          break;
 229       case GL_LINEAR_MIPMAP_LINEAR:
 230          minFilt = FILTER_LINEAR;
 231          mipFilt = MIPFILTER_LINEAR;
 232          break;
 233       default:
 234          return GL_FALSE;
 235       }
 236
 237       if (tObj->MaxAnisotropy > 1.0) {
 238          minFilt = FILTER_ANISOTROPIC;
 239          magFilt = FILTER_ANISOTROPIC;
 240       }
 241       else {
 242          switch (tObj->MagFilter) {
 243          case GL_NEAREST:
 244             magFilt = FILTER_NEAREST;
 245             break;
 246          case GL_LINEAR:
 247             magFilt = FILTER_LINEAR;
 248             break;
 249          default:
 250             return GL_FALSE;
 251          }
 252       }
 253
 254       lodbias = (int) ((tUnit->LodBias + tObj->LodBias) * 16.0);
 255       if (lodbias < -64)
 256           lodbias = -64;
 257       if (lodbias > 63)
 258           lodbias = 63;
 259
 260       state[I830_TEXREG_TM0S3] = ((lodbias << TM0S3_LOD_BIAS_SHIFT) &
 261                                   TM0S3_LOD_BIAS_MASK);
 262 #if 0
 263       /* YUV conversion:
 264        */
 265       if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
 266           firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
 267          state[I830_TEXREG_TM0S3] |= SS2_COLORSPACE_CONVERSION;
 268 #endif
 269
 270       state[I830_TEXREG_TM0S3] |= ((intelObj->lastLevel -
 271                                     intelObj->firstLevel) *
 272                                    4) << TM0S3_MIN_MIP_SHIFT;
 273
 274       state[I830_TEXREG_TM0S3] |= ((minFilt << TM0S3_MIN_FILTER_SHIFT) |
 275                                    (mipFilt << TM0S3_MIP_FILTER_SHIFT) |
 276                                    (magFilt << TM0S3_MAG_FILTER_SHIFT));
 277    }
 278
 279    {
 280       GLenum ws = tObj->WrapS;
 281       GLenum wt = tObj->WrapT;
 282
 283
 284       /* 3D textures not available on i830
 285        */
 286       if (tObj->Target == GL_TEXTURE_3D)
 287          return GL_FALSE;
 288
 289       state[I830_TEXREG_MCS] = (_3DSTATE_MAP_COORD_SET_CMD |
 290                                 MAP_UNIT(unit) |
 291                                 ENABLE_TEXCOORD_PARAMS |
 292                                 ss3 |
 293                                 ENABLE_ADDR_V_CNTL |
 294                                 TEXCOORD_ADDR_V_MODE(translate_wrap_mode(wt))
 295                                 | ENABLE_ADDR_U_CNTL |
 296                                 TEXCOORD_ADDR_U_MODE(translate_wrap_mode
 297                                                      (ws)));
 298    }
 299
 300    /* convert border color from float to ubyte */
 301    CLAMPED_FLOAT_TO_UBYTE(border[0], tObj->BorderColor[0]);
 302    CLAMPED_FLOAT_TO_UBYTE(border[1], tObj->BorderColor[1]);
 303    CLAMPED_FLOAT_TO_UBYTE(border[2], tObj->BorderColor[2]);
 304    CLAMPED_FLOAT_TO_UBYTE(border[3], tObj->BorderColor[3]);
 305
 306    state[I830_TEXREG_TM0S4] = INTEL_PACKCOLOR8888(border[0],
 307                                                   border[1],
 308                                                   border[2],
 309                                                   border[3]);
 310
 311
 312    I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(unit), GL_TRUE);
 313    /* memcmp was already disabled, but definitely won't work as the
 314     * region might now change and that wouldn't be detected:
 315     */
 316    I830_STATECHANGE(i830, I830_UPLOAD_TEX(unit));
 317    return GL_TRUE;
 318 }
 319
 320
 321
 322
 323 void
 324 i830UpdateTextureState(struct intel_context *intel)
 325 {
 326    struct i830_context *i830 = i830_context(&intel->ctx);
 327    GLboolean ok = GL_TRUE;
 328    GLuint i;
 329
 330    for (i = 0; i < I830_TEX_UNITS && ok; i++) {
 331       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 332       case TEXTURE_1D_BIT:
 333       case TEXTURE_2D_BIT:
 334       case TEXTURE_CUBE_BIT:
 335          ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_NORMAL);
 336          break;
 337       case TEXTURE_RECT_BIT:
 338          ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_IN_TEXELUNITS);
 339          break;
 340       case 0:{
 341          struct i830_context *i830 = i830_context(&intel->ctx);
 342          if (i830->state.active & I830_UPLOAD_TEX(i))
 343             I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(i), GL_FALSE);
 344
 345          if (i830->state.tex_buffer[i] != NULL) {
 346             dri_bo_unreference(i830->state.tex_buffer[i]);
 347             i830->state.tex_buffer[i] = NULL;
 348          }
 349          break;
 350       }
 351       case TEXTURE_3D_BIT:
 352       default:
 353          ok = GL_FALSE;
 354          break;
 355       }
 356    }
 357
 358    FALLBACK(intel, I830_FALLBACK_TEXTURE, !ok);
 359
 360    if (ok)
 361       i830EmitTextureBlend(i830);
 362 }