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        dri_bo_unreference(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    dri_bo_reference(intelObj->mt->region->buffer);
 145    i915->state.tex_buffer[unit] = intelObj->mt->region->buffer;
 146
 147    i915->state.tex_offset[unit] = intel_miptree_image_offset(intelObj->mt, 0,
 148                                                              intelObj->
 149                                                              firstLevel);
 150
 151    state[I915_TEXREG_MS3] =
 152       (((firstImage->Height - 1) << MS3_HEIGHT_SHIFT) |
 153        ((firstImage->Width - 1) << MS3_WIDTH_SHIFT) |
 154        translate_texture_format(firstImage->TexFormat->MesaFormat) |
 155        MS3_USE_FENCE_REGS);
 156
 157    state[I915_TEXREG_MS4] =
 158       (((((intelObj->mt->pitch * intelObj->mt->cpp) / 4) -
 159          1) << MS4_PITCH_SHIFT) | MS4_CUBE_FACE_ENA_MASK |
 160        ((((intelObj->lastLevel -
 161            intelObj->firstLevel) *
 162           4)) << MS4_MAX_LOD_SHIFT) | ((firstImage->Depth -
 163                                         1) << MS4_VOLUME_DEPTH_SHIFT));
 164
 165
 166    {
 167       GLuint minFilt, mipFilt, magFilt;
 168
 169       switch (tObj->MinFilter) {
 170       case GL_NEAREST:
 171          minFilt = FILTER_NEAREST;
 172          mipFilt = MIPFILTER_NONE;
 173          break;
 174       case GL_LINEAR:
 175          minFilt = FILTER_LINEAR;
 176          mipFilt = MIPFILTER_NONE;
 177          break;
 178       case GL_NEAREST_MIPMAP_NEAREST:
 179          minFilt = FILTER_NEAREST;
 180          mipFilt = MIPFILTER_NEAREST;
 181          break;
 182       case GL_LINEAR_MIPMAP_NEAREST:
 183          minFilt = FILTER_LINEAR;
 184          mipFilt = MIPFILTER_NEAREST;
 185          break;
 186       case GL_NEAREST_MIPMAP_LINEAR:
 187          minFilt = FILTER_NEAREST;
 188          mipFilt = MIPFILTER_LINEAR;
 189          break;
 190       case GL_LINEAR_MIPMAP_LINEAR:
 191          minFilt = FILTER_LINEAR;
 192          mipFilt = MIPFILTER_LINEAR;
 193          break;
 194       default:
 195          return GL_FALSE;
 196       }
 197
 198       if (tObj->MaxAnisotropy > 1.0) {
 199          minFilt = FILTER_ANISOTROPIC;
 200          magFilt = FILTER_ANISOTROPIC;
 201       }
 202       else {
 203          switch (tObj->MagFilter) {
 204          case GL_NEAREST:
 205             magFilt = FILTER_NEAREST;
 206             break;
 207          case GL_LINEAR:
 208             magFilt = FILTER_LINEAR;
 209             break;
 210          default:
 211             return GL_FALSE;
 212          }
 213       }
 214
 215       state[I915_TEXREG_SS2] = i915->lodbias_ss2[unit];
 216
 217       /* YUV conversion:
 218        */
 219       if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
 220           firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
 221          state[I915_TEXREG_SS2] |= SS2_COLORSPACE_CONVERSION;
 222
 223       /* Shadow:
 224        */
 225       if (tObj->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB &&
 226           tObj->Target != GL_TEXTURE_3D) {
 227
 228          state[I915_TEXREG_SS2] |=
 229             (SS2_SHADOW_ENABLE |
 230              intel_translate_compare_func(tObj->CompareFunc));
 231
 232          minFilt = FILTER_4X4_FLAT;
 233          magFilt = FILTER_4X4_FLAT;
 234       }
 235
 236       state[I915_TEXREG_SS2] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
 237                                  (mipFilt << SS2_MIP_FILTER_SHIFT) |
 238                                  (magFilt << SS2_MAG_FILTER_SHIFT));
 239    }
 240
 241    {
 242       GLenum ws = tObj->WrapS;
 243       GLenum wt = tObj->WrapT;
 244       GLenum wr = tObj->WrapR;
 245
 246
 247       /* 3D textures don't seem to respect the border color.
 248        * Fallback if there's ever a danger that they might refer to
 249        * it.
 250        *
 251        * Effectively this means fallback on 3D clamp or
 252        * clamp_to_border.
 253        */
 254       if (tObj->Target == GL_TEXTURE_3D &&
 255           (tObj->MinFilter != GL_NEAREST ||
 256            tObj->MagFilter != GL_NEAREST) &&
 257           (ws == GL_CLAMP ||
 258            wt == GL_CLAMP ||
 259            wr == GL_CLAMP ||
 260            ws == GL_CLAMP_TO_BORDER ||
 261            wt == GL_CLAMP_TO_BORDER || wr == GL_CLAMP_TO_BORDER))
 262          return GL_FALSE;
 263
 264
 265       state[I915_TEXREG_SS3] = ss3;     /* SS3_NORMALIZED_COORDS */
 266
 267       state[I915_TEXREG_SS3] |=
 268          ((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
 269           (translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
 270           (translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT));
 271
 272       state[I915_TEXREG_SS3] |= (unit << SS3_TEXTUREMAP_INDEX_SHIFT);
 273    }
 274
 275
 276    state[I915_TEXREG_SS4] = INTEL_PACKCOLOR8888(tObj->_BorderChan[0],
 277                                                 tObj->_BorderChan[1],
 278                                                 tObj->_BorderChan[2],
 279                                                 tObj->_BorderChan[3]);
 280
 281
 282    I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), GL_TRUE);
 283    /* memcmp was already disabled, but definitely won't work as the
 284     * region might now change and that wouldn't be detected:
 285     */
 286    I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));
 287
 288
 289 #if 0
 290    DBG(TEXTURE, "state[I915_TEXREG_SS2] = 0x%x\n", state[I915_TEXREG_SS2]);
 291    DBG(TEXTURE, "state[I915_TEXREG_SS3] = 0x%x\n", state[I915_TEXREG_SS3]);
 292    DBG(TEXTURE, "state[I915_TEXREG_SS4] = 0x%x\n", state[I915_TEXREG_SS4]);
 293    DBG(TEXTURE, "state[I915_TEXREG_MS2] = 0x%x\n", state[I915_TEXREG_MS2]);
 294    DBG(TEXTURE, "state[I915_TEXREG_MS3] = 0x%x\n", state[I915_TEXREG_MS3]);
 295    DBG(TEXTURE, "state[I915_TEXREG_MS4] = 0x%x\n", state[I915_TEXREG_MS4]);
 296 #endif
 297
 298    return GL_TRUE;
 299 }
 300
 301
 302
 303
 304 void
 305 i915UpdateTextureState(struct intel_context *intel)
 306 {
 307    GLboolean ok = GL_TRUE;
 308    GLuint i;
 309
 310    for (i = 0; i < I915_TEX_UNITS && ok; i++) {
 311       switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
 312       case TEXTURE_1D_BIT:
 313       case TEXTURE_2D_BIT:
 314       case TEXTURE_CUBE_BIT:
 315       case TEXTURE_3D_BIT:
 316          ok = i915_update_tex_unit(intel, i, SS3_NORMALIZED_COORDS);
 317          break;
 318       case TEXTURE_RECT_BIT:
 319          ok = i915_update_tex_unit(intel, i, 0);
 320          break;
 321       case 0:{
 322             struct i915_context *i915 = i915_context(&intel->ctx);
 323             if (i915->state.active & I915_UPLOAD_TEX(i))
 324                I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(i), GL_FALSE);
 325
 326             if (i915->state.tex_buffer[i] != NULL) {
 327                dri_bo_unreference(i915->state.tex_buffer[i]);
 328                i915->state.tex_buffer[i] = NULL;
 329             }
 330
 331             break;
 332          }
 333       default:
 334          ok = GL_FALSE;
 335          break;
 336       }
 337    }
 338
 339    FALLBACK(intel, I915_FALLBACK_TEXTURE, !ok);
 340 }