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       return MAPSURF_32BIT | MT_32BIT_ARGB8888;
  60    case MESA_FORMAT_XRGB8888:
  61       return MAPSURF_32BIT | MT_32BIT_XRGB8888;
  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    GLuint dst_x, dst_y;
 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 (!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    intel_miptree_get_image_offset(intelObj->mt, intelObj->firstLevel, 0, 0,
 145                                   &dst_x, &dst_y);
 146
 147    dri_bo_reference(intelObj->mt->region->buffer);
 148    i830->state.tex_buffer[unit] = intelObj->mt->region->buffer;
 149    pitch = intelObj->mt->region->pitch * intelObj->mt->cpp;
 150
 151    /* XXX: This calculation is probably broken for tiled images with
 152     * a non-page-aligned offset.
 153     */
 154    i830->state.tex_offset[unit] = dst_x * intelObj->mt->cpp + dst_y * pitch;
 155
 156    format = translate_texture_format(firstImage->TexFormat,
 157                                      firstImage->InternalFormat);
 158
 159    state[I830_TEXREG_TM0LI] = (_3DSTATE_LOAD_STATE_IMMEDIATE_2 |
 160                                (LOAD_TEXTURE_MAP0 << unit) | 4);
 161
 162    state[I830_TEXREG_TM0S1] =
 163       (((firstImage->Height - 1) << TM0S1_HEIGHT_SHIFT) |
 164        ((firstImage->Width - 1) << TM0S1_WIDTH_SHIFT) | format);
 165
 166    if (intelObj->mt->region->tiling != I915_TILING_NONE) {
 167       state[I830_TEXREG_TM0S1] |= TM0S1_TILED_SURFACE;
 168       if (intelObj->mt->region->tiling == I915_TILING_Y)
 169          state[I830_TEXREG_TM0S1] |= TM0S1_TILE_WALK;
 170    }
 171
 172    state[I830_TEXREG_TM0S2] =
 173       ((((pitch / 4) - 1) << TM0S2_PITCH_SHIFT) | TM0S2_CUBE_FACE_ENA_MASK);
 174
 175    {
 176       if (tObj->Target == GL_TEXTURE_CUBE_MAP)
 177          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit) |
 178                                     CUBE_NEGX_ENABLE |
 179                                     CUBE_POSX_ENABLE |
 180                                     CUBE_NEGY_ENABLE |
 181                                     CUBE_POSY_ENABLE |
 182                                     CUBE_NEGZ_ENABLE | CUBE_POSZ_ENABLE);
 183       else
 184          state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit));
 185    }
 186
 187
 188
 189
 190    {
 191       GLuint minFilt, mipFilt, magFilt;
 192
 193       switch (tObj->MinFilter) {
 194       case GL_NEAREST:
 195          minFilt = FILTER_NEAREST;
 196          mipFilt = MIPFILTER_NONE;
 197          break;
 198       case GL_LINEAR:
 199          minFilt = FILTER_LINEAR;
 200          mipFilt = MIPFILTER_NONE;
 201          break;
 202       case GL_NEAREST_MIPMAP_NEAREST:
 203          minFilt = FILTER_NEAREST;
 204          mipFilt = MIPFILTER_NEAREST;
 205          break;
 206       case GL_LINEAR_MIPMAP_NEAREST:
 207          minFilt = FILTER_LINEAR;
 208          mipFilt = MIPFILTER_NEAREST;
 209          break;
 210       case GL_NEAREST_MIPMAP_LINEAR:
 211          minFilt = FILTER_NEAREST;
 212          mipFilt = MIPFILTER_LINEAR;
 213          break;
 214       case GL_LINEAR_MIPMAP_LINEAR:
 215          minFilt = FILTER_LINEAR;
 216          mipFilt = MIPFILTER_LINEAR;
 217          break;
 218       default:
 219          return GL_FALSE;
 220       }
 221
 222       if (tObj->MaxAnisotropy > 1.0) {
 223          minFilt = FILTER_ANISOTROPIC;
 224          magFilt = FILTER_ANISOTROPIC;
 225       }
 226       else {
 227          switch (tObj->MagFilter) {
 228          case GL_NEAREST:
 229             magFilt = FILTER_NEAREST;
 230             break;
 231          case GL_LINEAR:
 232             magFilt = FILTER_LINEAR;
 233             break;
 234          default:
 235             return GL_FALSE;
 236          }
 237       }
 238
 239       lodbias = (int) ((tUnit->LodBias + tObj->LodBias) * 16.0);
 240       if (lodbias < -64)
 241           lodbias = -64;
 242       if (lodbias > 63)
 243           lodbias = 63;
 244
 245       state[I830_TEXREG_TM0S3] = ((lodbias << TM0S3_LOD_BIAS_SHIFT) &
 246                                   TM0S3_LOD_BIAS_MASK);
 247 #if 0
 248       /* YUV conversion:
 249        */
 250       if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
 251           firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
 252          state[I830_TEXREG_TM0S3] |= SS2_COLORSPACE_CONVERSION;
 253 #endif
 254
 255       state[I830_TEXREG_TM0S3] |= ((intelObj->lastLevel -
 256                                     intelObj->firstLevel) *
 257                                    4) << TM0S3_MIN_MIP_SHIFT;
 258
 259       state[I830_TEXREG_TM0S3] |= ((minFilt << TM0S3_MIN_FILTER_SHIFT) |
 260                                    (mipFilt << TM0S3_MIP_FILTER_SHIFT) |
 261                                    (magFilt << TM0S3_MAG_FILTER_SHIFT));
 262    }
 263
 264    {
 265       GLenum ws = tObj->WrapS;
 266       GLenum wt = tObj->WrapT;
 267
 268
 269       /* 3D textures not available on i830
 270        */
 271       if (tObj->Target == GL_TEXTURE_3D)
 272          return GL_FALSE;
 273
 274       state[I830_TEXREG_MCS] = (_3DSTATE_MAP_COORD_SET_CMD |
 275                                 MAP_UNIT(unit) |
 276                                 ENABLE_TEXCOORD_PARAMS |
 277                                 ss3 |
 278                                 ENABLE_ADDR_V_CNTL |
 279                                 TEXCOORD_ADDR_V_MODE(translate_wrap_mode(wt))
 280                                 | ENABLE_ADDR_U_CNTL |
 281                                 TEXCOORD_ADDR_U_MODE(translate_wrap_mode
 282                                                      (ws)));
 283    }
 284
 285    /* convert border color from float to ubyte */
 286    CLAMPED_FLOAT_TO_UBYTE(border[0], tObj->BorderColor.f[0]);
 287    CLAMPED_FLOAT_TO_UBYTE(border[1], tObj->BorderColor.f[1]);
 288    CLAMPED_FLOAT_TO_UBYTE(border[2], tObj->BorderColor.f[2]);
 289    CLAMPED_FLOAT_TO_UBYTE(border[3], tObj->BorderColor.f[3]);
 290
 291    state[I830_TEXREG_TM0S4] = PACK_COLOR_8888(border[3],
 292                                               border[0],
 293                                               border[1],
 294                                               border[2]);
 295
 296    I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(unit), GL_TRUE);
 297    /* memcmp was already disabled, but definitely won't work as the
 298     * region might now change and that wouldn't be detected:
 299     */
 300    I830_STATECHANGE(i830, I830_UPLOAD_TEX(unit));
 301    return GL_TRUE;
 302 }
 303
 304
 305
 306
 307 void
 308 i830UpdateTextureState(struct intel_context *intel)
 309 {
 310    struct i830_context *i830 = i830_context(&intel->ctx);
 311    GLboolean ok = GL_TRUE;
 312    GLuint i;
 313
 314    for (i = 0; i < I830_TEX_UNITS && ok; i++) {
 315       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 316       case TEXTURE_1D_BIT:
 317       case TEXTURE_2D_BIT:
 318       case TEXTURE_CUBE_BIT:
 319          ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_NORMAL);
 320          break;
 321       case TEXTURE_RECT_BIT:
 322          ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_IN_TEXELUNITS);
 323          break;
 324       case 0:{
 325          struct i830_context *i830 = i830_context(&intel->ctx);
 326          if (i830->state.active & I830_UPLOAD_TEX(i))
 327             I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(i), GL_FALSE);
 328
 329          if (i830->state.tex_buffer[i] != NULL) {
 330             dri_bo_unreference(i830->state.tex_buffer[i]);
 331             i830->state.tex_buffer[i] = NULL;
 332          }
 333          break;
 334       }
 335       case TEXTURE_3D_BIT:
 336       default:
 337          ok = GL_FALSE;
 338          break;
 339       }
 340    }
 341
 342    FALLBACK(intel, I830_FALLBACK_TEXTURE, !ok);
 343
 344    if (ok)
 345       i830EmitTextureBlend(i830);
 346 }