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_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 %x\n", __FUNCTION__, mesa_format);
  80       abort();
  81       return 0;
  82    }
  83 }
  84
  85
  86
  87
  88 /* The i915 (and related graphics cores) do not support GL_CLAMP.  The
  89  * Intel drivers for "other operating systems" implement GL_CLAMP as
  90  * GL_CLAMP_TO_EDGE, so the same is done here.
  91  */
  92 static GLuint
  93 translate_wrap_mode(GLenum wrap)
  94 {
  95    switch (wrap) {
  96    case GL_REPEAT:
  97       return TEXCOORDMODE_WRAP;
  98    case GL_CLAMP:
  99    case GL_CLAMP_TO_EDGE:
 100       return TEXCOORDMODE_CLAMP;        /* not really correct */
 101    case GL_CLAMP_TO_BORDER:
 102       return TEXCOORDMODE_CLAMP_BORDER;
 103    case GL_MIRRORED_REPEAT:
 104       return TEXCOORDMODE_MIRROR;
 105    default:
 106       return TEXCOORDMODE_WRAP;
 107    }
 108 }
 109
 110
 111 /* Recalculate all state from scratch.  Perhaps not the most
 112  * efficient, but this has gotten complex enough that we need
 113  * something which is understandable and reliable.
 114  */
 115 static GLboolean
 116 i830_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
 117 {
 118    GLcontext *ctx = &intel->ctx;
 119    struct i830_context *i830 = i830_context(ctx);
 120    struct gl_texture_unit *tUnit = &ctx->Texture.Unit[unit];
 121    struct gl_texture_object *tObj = tUnit->_Current;
 122    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 123    struct gl_texture_image *firstImage;
 124    GLuint *state = i830->state.Tex[unit], format, pitch;
 125    GLint lodbias;
 126    GLubyte border[4];
 127
 128    memset(state, 0, sizeof(state));
 129
 130    /*We need to refcount these. */
 131
 132    if (i830->state.tex_buffer[unit] != NULL) {
 133        dri_bo_unreference(i830->state.tex_buffer[unit]);
 134        i830->state.tex_buffer[unit] = NULL;
 135    }
 136
 137    if (!intelObj->imageOverride && !intel_finalize_mipmap_tree(intel, unit))
 138       return GL_FALSE;
 139
 140    /* Get first image here, since intelObj->firstLevel will get set in
 141     * the intel_finalize_mipmap_tree() call above.
 142     */
 143    firstImage = tObj->Image[0][intelObj->firstLevel];
 144
 145    if (intelObj->imageOverride) {
 146       i830->state.tex_buffer[unit] = NULL;
 147       i830->state.tex_offset[unit] = intelObj->textureOffset;
 148
 149       switch (intelObj->depthOverride) {
 150       case 32:
 151          format = MAPSURF_32BIT | MT_32BIT_ARGB8888;
 152          break;
 153       case 24:
 154       default:
 155          format = MAPSURF_32BIT | MT_32BIT_XRGB8888;
 156          break;
 157       case 16:
 158          format = MAPSURF_16BIT | MT_16BIT_RGB565;
 159          break;
 160       }
 161
 162       pitch = intelObj->pitchOverride;
 163    } else {
 164       GLuint dst_x, dst_y;
 165
 166       intel_miptree_get_image_offset(intelObj->mt, intelObj->firstLevel, 0, 0,
 167                                      &dst_x, &dst_y);
 168
 169       dri_bo_reference(intelObj->mt->region->buffer);
 170       i830->state.tex_buffer[unit] = intelObj->mt->region->buffer;
 171       /* XXX: This calculation is probably broken for tiled images with
 172        * a non-page-aligned offset.
 173        */
 174       i830->state.tex_offset[unit] = (dst_x + dst_y * intelObj->mt->pitch) *
 175          intelObj->mt->cpp;
 176
 177       format = translate_texture_format(firstImage->TexFormat,
 178                                         firstImage->InternalFormat);
 179       pitch = intelObj->mt->pitch * intelObj->mt->cpp;
 180    }
 181
 182    state[I830_TEXREG_TM0LI] = (_3DSTATE_LOAD_STATE_IMMEDIATE_2 |
 183                                (LOAD_TEXTURE_MAP0 << unit) | 4);
 184
 185    state[I830_TEXREG_TM0S1] =
 186       (((firstImage->Height - 1) << TM0S1_HEIGHT_SHIFT) |
 187        ((firstImage->Width - 1) << TM0S1_WIDTH_SHIFT) | format);
 188
 189    if (intelObj->mt->region->tiling != I915_TILING_NONE) {
 190       state[I830_TEXREG_TM0S1] |= TM0S1_TILED_SURFACE;
 191       if (intelObj->mt->region->tiling == I915_TILING_Y)
 192          state[I830_TEXREG_TM0S1] |= TM0S1_TILE_WALK;
 193    }
 194
 195    state[I830_TEXREG_TM0S2] =
 196       ((((pitch / 4) - 1) << TM0S2_PITCH_SHIFT) | TM0S2_CUBE_FACE_ENA_MASK);
 197
 198    {
 199       if (tObj->Target == GL_TEXTURE_CUBE_MAP)
 200          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit) |
 201                                     CUBE_NEGX_ENABLE |
 202                                     CUBE_POSX_ENABLE |
 203                                     CUBE_NEGY_ENABLE |
 204                                     CUBE_POSY_ENABLE |
 205                                     CUBE_NEGZ_ENABLE | CUBE_POSZ_ENABLE);
 206       else
 207          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit));
 208    }
 209
 210
 211
 212
 213    {
 214       GLuint minFilt, mipFilt, magFilt;
 215
 216       switch (tObj->MinFilter) {
 217       case GL_NEAREST:
 218          minFilt = FILTER_NEAREST;
 219          mipFilt = MIPFILTER_NONE;
 220          break;
 221       case GL_LINEAR:
 222          minFilt = FILTER_LINEAR;
 223          mipFilt = MIPFILTER_NONE;
 224          break;
 225       case GL_NEAREST_MIPMAP_NEAREST:
 226          minFilt = FILTER_NEAREST;
 227          mipFilt = MIPFILTER_NEAREST;
 228          break;
 229       case GL_LINEAR_MIPMAP_NEAREST:
 230          minFilt = FILTER_LINEAR;
 231          mipFilt = MIPFILTER_NEAREST;
 232          break;
 233       case GL_NEAREST_MIPMAP_LINEAR:
 234          minFilt = FILTER_NEAREST;
 235          mipFilt = MIPFILTER_LINEAR;
 236          break;
 237       case GL_LINEAR_MIPMAP_LINEAR:
 238          minFilt = FILTER_LINEAR;
 239          mipFilt = MIPFILTER_LINEAR;
 240          break;
 241       default:
 242          return GL_FALSE;
 243       }
 244
 245       if (tObj->MaxAnisotropy > 1.0) {
 246          minFilt = FILTER_ANISOTROPIC;
 247          magFilt = FILTER_ANISOTROPIC;
 248       }
 249       else {
 250          switch (tObj->MagFilter) {
 251          case GL_NEAREST:
 252             magFilt = FILTER_NEAREST;
 253             break;
 254          case GL_LINEAR:
 255             magFilt = FILTER_LINEAR;
 256             break;
 257          default:
 258             return GL_FALSE;
 259          }
 260       }
 261
 262       lodbias = (int) ((tUnit->LodBias + tObj->LodBias) * 16.0);
 263       if (lodbias < -64)
 264           lodbias = -64;
 265       if (lodbias > 63)
 266           lodbias = 63;
 267
 268       state[I830_TEXREG_TM0S3] = ((lodbias << TM0S3_LOD_BIAS_SHIFT) &
 269                                   TM0S3_LOD_BIAS_MASK);
 270 #if 0
 271       /* YUV conversion:
 272        */
 273       if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
 274           firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
 275          state[I830_TEXREG_TM0S3] |= SS2_COLORSPACE_CONVERSION;
 276 #endif
 277
 278       state[I830_TEXREG_TM0S3] |= ((intelObj->lastLevel -
 279                                     intelObj->firstLevel) *
 280                                    4) << TM0S3_MIN_MIP_SHIFT;
 281
 282       state[I830_TEXREG_TM0S3] |= ((minFilt << TM0S3_MIN_FILTER_SHIFT) |
 283                                    (mipFilt << TM0S3_MIP_FILTER_SHIFT) |
 284                                    (magFilt << TM0S3_MAG_FILTER_SHIFT));
 285    }
 286
 287    {
 288       GLenum ws = tObj->WrapS;
 289       GLenum wt = tObj->WrapT;
 290
 291
 292       /* 3D textures not available on i830
 293        */
 294       if (tObj->Target == GL_TEXTURE_3D)
 295          return GL_FALSE;
 296
 297       state[I830_TEXREG_MCS] = (_3DSTATE_MAP_COORD_SET_CMD |
 298                                 MAP_UNIT(unit) |
 299                                 ENABLE_TEXCOORD_PARAMS |
 300                                 ss3 |
 301                                 ENABLE_ADDR_V_CNTL |
 302                                 TEXCOORD_ADDR_V_MODE(translate_wrap_mode(wt))
 303                                 | ENABLE_ADDR_U_CNTL |
 304                                 TEXCOORD_ADDR_U_MODE(translate_wrap_mode
 305                                                      (ws)));
 306    }
 307
 308    /* convert border color from float to ubyte */
 309    CLAMPED_FLOAT_TO_UBYTE(border[0], tObj->BorderColor[0]);
 310    CLAMPED_FLOAT_TO_UBYTE(border[1], tObj->BorderColor[1]);
 311    CLAMPED_FLOAT_TO_UBYTE(border[2], tObj->BorderColor[2]);
 312    CLAMPED_FLOAT_TO_UBYTE(border[3], tObj->BorderColor[3]);
 313
 314    state[I830_TEXREG_TM0S4] = INTEL_PACKCOLOR8888(border[0],
 315                                                   border[1],
 316                                                   border[2],
 317                                                   border[3]);
 318
 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 }