src/mesa/drivers/dri/i915tex/i915_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 "mtypes.h"
  29 #include "enums.h"
  30 #include "texformat.h"
  31 #include "dri_bufmgr.h"
  32
  33 #include "intel_mipmap_tree.h"
  34 #include "intel_tex.h"
  35
  36 #include "i915_context.h"
  37 #include "i915_reg.h"
  38
  39
  40 static GLuint
  41 translate_texture_format(GLuint mesa_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_A8;
  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_YCBCR_REV:
  61       return (MAPSURF_422 | MT_422_YCRCB_NORMAL);
  62    case MESA_FORMAT_YCBCR:
  63       return (MAPSURF_422 | MT_422_YCRCB_SWAPY);
  64    case MESA_FORMAT_RGB_FXT1:
  65    case MESA_FORMAT_RGBA_FXT1:
  66       return (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
  67    case MESA_FORMAT_Z16:
  68       return (MAPSURF_16BIT | MT_16BIT_L16);
  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    case MESA_FORMAT_Z24_S8:
  77       return (MAPSURF_32BIT | MT_32BIT_xL824);
  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       return TEXCOORDMODE_CLAMP_EDGE;   /* not quite correct */
 100    case GL_CLAMP_TO_EDGE:
 101       return TEXCOORDMODE_CLAMP_EDGE;
 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
 113 /* Recalculate all state from scratch.  Perhaps not the most
 114  * efficient, but this has gotten complex enough that we need
 115  * something which is understandable and reliable.
 116  */
 117 static GLboolean
 118 i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
 119 {
 120    GLcontext *ctx = &intel->ctx;
 121    struct i915_context *i915 = i915_context(ctx);
 122    struct gl_texture_object *tObj = ctx->Texture.Unit[unit]._Current;
 123    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 124    struct gl_texture_image *firstImage;
 125    GLuint *state = i915->state.Tex[unit];
 126
 127    memset(state, 0, sizeof(state));
 128
 129    /*We need to refcount these. */
 130
 131    if (i915->state.tex_buffer[unit] != NULL) {
 132        driBOUnReference(i915->state.tex_buffer[unit]);
 133        i915->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    i915->state.tex_buffer[unit] = driBOReference(intelObj->mt->region->buffer);
 145    i915->state.tex_offset[unit] = intel_miptree_image_offset(intelObj->mt, 0,
 146                                                              intelObj->
 147                                                              firstLevel);
 148
 149    state[I915_TEXREG_MS3] =
 150       (((firstImage->Height - 1) << MS3_HEIGHT_SHIFT) |
 151        ((firstImage->Width - 1) << MS3_WIDTH_SHIFT) |
 152        translate_texture_format(firstImage->TexFormat->MesaFormat) |
 153        MS3_USE_FENCE_REGS);
 154
 155    state[I915_TEXREG_MS4] =
 156       (((((intelObj->mt->pitch * intelObj->mt->cpp) / 4) -
 157          1) << MS4_PITCH_SHIFT) | MS4_CUBE_FACE_ENA_MASK |
 158        ((((intelObj->lastLevel -
 159            intelObj->firstLevel) *
 160           4)) << MS4_MAX_LOD_SHIFT) | ((firstImage->Depth -
 161                                         1) << MS4_VOLUME_DEPTH_SHIFT));
 162
 163
 164    {
 165       GLuint minFilt, mipFilt, magFilt;
 166
 167       switch (tObj->MinFilter) {
 168       case GL_NEAREST:
 169          minFilt = FILTER_NEAREST;
 170          mipFilt = MIPFILTER_NONE;
 171          break;
 172       case GL_LINEAR:
 173          minFilt = FILTER_LINEAR;
 174          mipFilt = MIPFILTER_NONE;
 175          break;
 176       case GL_NEAREST_MIPMAP_NEAREST:
 177          minFilt = FILTER_NEAREST;
 178          mipFilt = MIPFILTER_NEAREST;
 179          break;
 180       case GL_LINEAR_MIPMAP_NEAREST:
 181          minFilt = FILTER_LINEAR;
 182          mipFilt = MIPFILTER_NEAREST;
 183          break;
 184       case GL_NEAREST_MIPMAP_LINEAR:
 185          minFilt = FILTER_NEAREST;
 186          mipFilt = MIPFILTER_LINEAR;
 187          break;
 188       case GL_LINEAR_MIPMAP_LINEAR:
 189          minFilt = FILTER_LINEAR;
 190          mipFilt = MIPFILTER_LINEAR;
 191          break;
 192       default:
 193          return GL_FALSE;
 194       }
 195
 196       if (tObj->MaxAnisotropy > 1.0) {
 197          minFilt = FILTER_ANISOTROPIC;
 198          magFilt = FILTER_ANISOTROPIC;
 199       }
 200       else {
 201          switch (tObj->MagFilter) {
 202          case GL_NEAREST:
 203             magFilt = FILTER_NEAREST;
 204             break;
 205          case GL_LINEAR:
 206             magFilt = FILTER_LINEAR;
 207             break;
 208          default:
 209             return GL_FALSE;
 210          }
 211       }
 212
 213       state[I915_TEXREG_SS2] = i915->lodbias_ss2[unit];
 214
 215       /* YUV conversion:
 216        */
 217       if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
 218           firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
 219          state[I915_TEXREG_SS2] |= SS2_COLORSPACE_CONVERSION;
 220
 221       /* Shadow:
 222        */
 223       if (tObj->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB &&
 224           tObj->Target != GL_TEXTURE_3D) {
 225
 226          state[I915_TEXREG_SS2] |=
 227             (SS2_SHADOW_ENABLE |
 228              intel_translate_compare_func(tObj->CompareFunc));
 229
 230          minFilt = FILTER_4X4_FLAT;
 231          magFilt = FILTER_4X4_FLAT;
 232       }
 233
 234       state[I915_TEXREG_SS2] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
 235                                  (mipFilt << SS2_MIP_FILTER_SHIFT) |
 236                                  (magFilt << SS2_MAG_FILTER_SHIFT));
 237    }
 238
 239    {
 240       GLenum ws = tObj->WrapS;
 241       GLenum wt = tObj->WrapT;
 242       GLenum wr = tObj->WrapR;
 243
 244
 245       /* 3D textures don't seem to respect the border color.
 246        * Fallback if there's ever a danger that they might refer to
 247        * it.
 248        *
 249        * Effectively this means fallback on 3D clamp or
 250        * clamp_to_border.
 251        */
 252       if (tObj->Target == GL_TEXTURE_3D &&
 253           (tObj->MinFilter != GL_NEAREST ||
 254            tObj->MagFilter != GL_NEAREST) &&
 255           (ws == GL_CLAMP ||
 256            wt == GL_CLAMP ||
 257            wr == GL_CLAMP ||
 258            ws == GL_CLAMP_TO_BORDER ||
 259            wt == GL_CLAMP_TO_BORDER || wr == GL_CLAMP_TO_BORDER))
 260          return GL_FALSE;
 261
 262
 263       state[I915_TEXREG_SS3] = ss3;     /* SS3_NORMALIZED_COORDS */
 264
 265       state[I915_TEXREG_SS3] |=
 266          ((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
 267           (translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
 268           (translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT));
 269
 270       state[I915_TEXREG_SS3] |= (unit << SS3_TEXTUREMAP_INDEX_SHIFT);
 271    }
 272
 273
 274    state[I915_TEXREG_SS4] = INTEL_PACKCOLOR8888(tObj->_BorderChan[0],
 275                                                 tObj->_BorderChan[1],
 276                                                 tObj->_BorderChan[2],
 277                                                 tObj->_BorderChan[3]);
 278
 279
 280    I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), GL_TRUE);
 281    /* memcmp was already disabled, but definitely won't work as the
 282     * region might now change and that wouldn't be detected:
 283     */
 284    I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 285
 286
 287 #if 0
 288    DBG(TEXTURE, "state[I915_TEXREG_SS2] = 0x%x\n", state[I915_TEXREG_SS2]);
 289    DBG(TEXTURE, "state[I915_TEXREG_SS3] = 0x%x\n", state[I915_TEXREG_SS3]);
 290    DBG(TEXTURE, "state[I915_TEXREG_SS4] = 0x%x\n", state[I915_TEXREG_SS4]);
 291    DBG(TEXTURE, "state[I915_TEXREG_MS2] = 0x%x\n", state[I915_TEXREG_MS2]);
 292    DBG(TEXTURE, "state[I915_TEXREG_MS3] = 0x%x\n", state[I915_TEXREG_MS3]);
 293    DBG(TEXTURE, "state[I915_TEXREG_MS4] = 0x%x\n", state[I915_TEXREG_MS4]);
 294 #endif
 295
 296    return GL_TRUE;
 297 }
 298
 299
 300
 301
 302 void
 303 i915UpdateTextureState(struct intel_context *intel)
 304 {
 305    GLboolean ok = GL_TRUE;
 306    GLuint i;
 307
 308    for (i = 0; i < I915_TEX_UNITS && ok; i++) {
 309       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 310       case TEXTURE_1D_BIT:
 311       case TEXTURE_2D_BIT:
 312       case TEXTURE_CUBE_BIT:
 313       case TEXTURE_3D_BIT:
 314          ok = i915_update_tex_unit(intel, i, SS3_NORMALIZED_COORDS);
 315          break;
 316       case TEXTURE_RECT_BIT:
 317          ok = i915_update_tex_unit(intel, i, 0);
 318          break;
 319       case 0:{
 320             struct i915_context *i915 = i915_context(&intel->ctx);
 321             if (i915->state.active & I915_UPLOAD_TEX(i))
 322                I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(i), GL_FALSE);
 323
 324             if (i915->state.tex_buffer[i] != NULL) {
 325                driBOUnReference(i915->state.tex_buffer[i]);
 326                i915->state.tex_buffer[i] = NULL;
 327             }
 328
 329             break;
 330          }
 331       default:
 332          ok = GL_FALSE;
 333          break;
 334       }
 335    }
 336
 337    FALLBACK(intel, I915_FALLBACK_TEXTURE, !ok);
 338 }