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/colormac.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_XRGB8888:
  64       return MAPSURF_32BIT | MT_32BIT_XRGB8888;
  65    case MESA_FORMAT_YCBCR_REV:
  66       return (MAPSURF_422 | MT_422_YCRCB_NORMAL);
  67    case MESA_FORMAT_YCBCR:
  68       return (MAPSURF_422 | MT_422_YCRCB_SWAPY);
  69    case MESA_FORMAT_RGB_FXT1:
  70    case MESA_FORMAT_RGBA_FXT1:
  71       return (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
  72    case MESA_FORMAT_RGBA_DXT1:
  73    case MESA_FORMAT_RGB_DXT1:
  74       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
  75    case MESA_FORMAT_RGBA_DXT3:
  76       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
  77    case MESA_FORMAT_RGBA_DXT5:
  78       return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
  79    default:
  80       fprintf(stderr, "%s: bad image format %x\n", __FUNCTION__, 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 GLboolean
 117 i830_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
 118 {
 119    GLcontext *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    GLuint *state = i830->state.Tex[unit], format, pitch;
 126    GLint lodbias;
 127    GLubyte border[4];
 128
 129    memset(state, 0, sizeof(state));
 130
 131    /*We need to refcount these. */
 132
 133    if (i830->state.tex_buffer[unit] != NULL) {
 134        dri_bo_unreference(i830->state.tex_buffer[unit]);
 135        i830->state.tex_buffer[unit] = NULL;
 136    }
 137
 138    if (!intelObj->imageOverride && !intel_finalize_mipmap_tree(intel, unit))
 139       return GL_FALSE;
 140
 141    /* Get first image here, since intelObj->firstLevel will get set in
 142     * the intel_finalize_mipmap_tree() call above.
 143     */
 144    firstImage = tObj->Image[0][intelObj->firstLevel];
 145
 146    if (intelObj->imageOverride) {
 147       i830->state.tex_buffer[unit] = NULL;
 148       i830->state.tex_offset[unit] = intelObj->textureOffset;
 149
 150       switch (intelObj->depthOverride) {
 151       case 32:
 152          format = MAPSURF_32BIT | MT_32BIT_ARGB8888;
 153          break;
 154       case 24:
 155       default:
 156          format = MAPSURF_32BIT | MT_32BIT_XRGB8888;
 157          break;
 158       case 16:
 159          format = MAPSURF_16BIT | MT_16BIT_RGB565;
 160          break;
 161       }
 162
 163       pitch = intelObj->pitchOverride;
 164    } else {
 165       GLuint dst_x, dst_y;
 166
 167       intel_miptree_get_image_offset(intelObj->mt, intelObj->firstLevel, 0, 0,
 168                                      &dst_x, &dst_y);
 169
 170       dri_bo_reference(intelObj->mt->region->buffer);
 171       i830->state.tex_buffer[unit] = intelObj->mt->region->buffer;
 172       /* XXX: This calculation is probably broken for tiled images with
 173        * a non-page-aligned offset.
 174        */
 175       i830->state.tex_offset[unit] = (dst_x + dst_y * intelObj->mt->pitch) *
 176          intelObj->mt->cpp;
 177
 178       format = translate_texture_format(firstImage->TexFormat,
 179                                         firstImage->InternalFormat);
 180       pitch = intelObj->mt->pitch * intelObj->mt->cpp;
 181    }
 182
 183    state[I830_TEXREG_TM0LI] = (_3DSTATE_LOAD_STATE_IMMEDIATE_2 |
 184                                (LOAD_TEXTURE_MAP0 << unit) | 4);
 185
 186    state[I830_TEXREG_TM0S1] =
 187       (((firstImage->Height - 1) << TM0S1_HEIGHT_SHIFT) |
 188        ((firstImage->Width - 1) << TM0S1_WIDTH_SHIFT) | format);
 189
 190    if (intelObj->mt->region->tiling != I915_TILING_NONE) {
 191       state[I830_TEXREG_TM0S1] |= TM0S1_TILED_SURFACE;
 192       if (intelObj->mt->region->tiling == I915_TILING_Y)
 193          state[I830_TEXREG_TM0S1] |= TM0S1_TILE_WALK;
 194    }
 195
 196    state[I830_TEXREG_TM0S2] =
 197       ((((pitch / 4) - 1) << TM0S2_PITCH_SHIFT) | TM0S2_CUBE_FACE_ENA_MASK);
 198
 199    {
 200       if (tObj->Target == GL_TEXTURE_CUBE_MAP)
 201          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit) |
 202                                     CUBE_NEGX_ENABLE |
 203                                     CUBE_POSX_ENABLE |
 204                                     CUBE_NEGY_ENABLE |
 205                                     CUBE_POSY_ENABLE |
 206                                     CUBE_NEGZ_ENABLE | CUBE_POSZ_ENABLE);
 207       else
 208          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit));
 209    }
 210
 211
 212
 213
 214    {
 215       GLuint minFilt, mipFilt, magFilt;
 216
 217       switch (tObj->MinFilter) {
 218       case GL_NEAREST:
 219          minFilt = FILTER_NEAREST;
 220          mipFilt = MIPFILTER_NONE;
 221          break;
 222       case GL_LINEAR:
 223          minFilt = FILTER_LINEAR;
 224          mipFilt = MIPFILTER_NONE;
 225          break;
 226       case GL_NEAREST_MIPMAP_NEAREST:
 227          minFilt = FILTER_NEAREST;
 228          mipFilt = MIPFILTER_NEAREST;
 229          break;
 230       case GL_LINEAR_MIPMAP_NEAREST:
 231          minFilt = FILTER_LINEAR;
 232          mipFilt = MIPFILTER_NEAREST;
 233          break;
 234       case GL_NEAREST_MIPMAP_LINEAR:
 235          minFilt = FILTER_NEAREST;
 236          mipFilt = MIPFILTER_LINEAR;
 237          break;
 238       case GL_LINEAR_MIPMAP_LINEAR:
 239          minFilt = FILTER_LINEAR;
 240          mipFilt = MIPFILTER_LINEAR;
 241          break;
 242       default:
 243          return GL_FALSE;
 244       }
 245
 246       if (tObj->MaxAnisotropy > 1.0) {
 247          minFilt = FILTER_ANISOTROPIC;
 248          magFilt = FILTER_ANISOTROPIC;
 249       }
 250       else {
 251          switch (tObj->MagFilter) {
 252          case GL_NEAREST:
 253             magFilt = FILTER_NEAREST;
 254             break;
 255          case GL_LINEAR:
 256             magFilt = FILTER_LINEAR;
 257             break;
 258          default:
 259             return GL_FALSE;
 260          }
 261       }
 262
 263       lodbias = (int) ((tUnit->LodBias + tObj->LodBias) * 16.0);
 264       if (lodbias < -64)
 265           lodbias = -64;
 266       if (lodbias > 63)
 267           lodbias = 63;
 268
 269       state[I830_TEXREG_TM0S3] = ((lodbias << TM0S3_LOD_BIAS_SHIFT) &
 270                                   TM0S3_LOD_BIAS_MASK);
 271 #if 0
 272       /* YUV conversion:
 273        */
 274       if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
 275           firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
 276          state[I830_TEXREG_TM0S3] |= SS2_COLORSPACE_CONVERSION;
 277 #endif
 278
 279       state[I830_TEXREG_TM0S3] |= ((intelObj->lastLevel -
 280                                     intelObj->firstLevel) *
 281                                    4) << TM0S3_MIN_MIP_SHIFT;
 282
 283       state[I830_TEXREG_TM0S3] |= ((minFilt << TM0S3_MIN_FILTER_SHIFT) |
 284                                    (mipFilt << TM0S3_MIP_FILTER_SHIFT) |
 285                                    (magFilt << TM0S3_MAG_FILTER_SHIFT));
 286    }
 287
 288    {
 289       GLenum ws = tObj->WrapS;
 290       GLenum wt = tObj->WrapT;
 291
 292
 293       /* 3D textures not available on i830
 294        */
 295       if (tObj->Target == GL_TEXTURE_3D)
 296          return GL_FALSE;
 297
 298       state[I830_TEXREG_MCS] = (_3DSTATE_MAP_COORD_SET_CMD |
 299                                 MAP_UNIT(unit) |
 300                                 ENABLE_TEXCOORD_PARAMS |
 301                                 ss3 |
 302                                 ENABLE_ADDR_V_CNTL |
 303                                 TEXCOORD_ADDR_V_MODE(translate_wrap_mode(wt))
 304                                 | ENABLE_ADDR_U_CNTL |
 305                                 TEXCOORD_ADDR_U_MODE(translate_wrap_mode
 306                                                      (ws)));
 307    }
 308
 309    /* convert border color from float to ubyte */
 310    CLAMPED_FLOAT_TO_UBYTE(border[0], tObj->BorderColor[0]);
 311    CLAMPED_FLOAT_TO_UBYTE(border[1], tObj->BorderColor[1]);
 312    CLAMPED_FLOAT_TO_UBYTE(border[2], tObj->BorderColor[2]);
 313    CLAMPED_FLOAT_TO_UBYTE(border[3], tObj->BorderColor[3]);
 314
 315    state[I830_TEXREG_TM0S4] = PACK_COLOR_8888(border[3],
 316                                               border[0],
 317                                               border[1],
 318                                               border[2]);
 319
 320    I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(unit), GL_TRUE);
 321    /* memcmp was already disabled, but definitely won't work as the
 322     * region might now change and that wouldn't be detected:
 323     */
 324    I830_STATECHANGE(i830, I830_UPLOAD_TEX(unit));
 325    return GL_TRUE;
 326 }
 327
 328
 329
 330
 331 void
 332 i830UpdateTextureState(struct intel_context *intel)
 333 {
 334    struct i830_context *i830 = i830_context(&intel->ctx);
 335    GLboolean ok = GL_TRUE;
 336    GLuint i;
 337
 338    for (i = 0; i < I830_TEX_UNITS && ok; i++) {
 339       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 340       case TEXTURE_1D_BIT:
 341       case TEXTURE_2D_BIT:
 342       case TEXTURE_CUBE_BIT:
 343          ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_NORMAL);
 344          break;
 345       case TEXTURE_RECT_BIT:
 346          ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_IN_TEXELUNITS);
 347          break;
 348       case 0:{
 349          struct i830_context *i830 = i830_context(&intel->ctx);
 350          if (i830->state.active & I830_UPLOAD_TEX(i))
 351             I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(i), GL_FALSE);
 352
 353          if (i830->state.tex_buffer[i] != NULL) {
 354             dri_bo_unreference(i830->state.tex_buffer[i]);
 355             i830->state.tex_buffer[i] = NULL;
 356          }
 357          break;
 358       }
 359       case TEXTURE_3D_BIT:
 360       default:
 361          ok = GL_FALSE;
 362          break;
 363       }
 364    }
 365
 366    FALLBACK(intel, I830_FALLBACK_TEXTURE, !ok);
 367
 368    if (ok)
 369       i830EmitTextureBlend(i830);
 370 }