src/mesa/drivers/dri/i915/intel_mipmap_tree.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2006 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 "intel_context.h"
  29 #include "intel_mipmap_tree.h"
  30 #include "intel_regions.h"
  31 #include "enums.h"
  32
  33 #define FILE_DEBUG_FLAG DEBUG_MIPTREE
  34
  35 static GLenum
  36 target_to_target(GLenum target)
  37 {
  38    switch (target) {
  39    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
  40    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
  41    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
  42    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
  43    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
  44    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
  45       return GL_TEXTURE_CUBE_MAP_ARB;
  46    default:
  47       return target;
  48    }
  49 }
  50
  51 struct intel_mipmap_tree *
  52 intel_miptree_create(struct intel_context *intel,
  53                      GLenum target,
  54                      GLenum internal_format,
  55                      GLuint first_level,
  56                      GLuint last_level,
  57                      GLuint width0,
  58                      GLuint height0,
  59                      GLuint depth0, GLuint cpp, GLuint compress_byte)
  60 {
  61    GLboolean ok;
  62    struct intel_mipmap_tree *mt = calloc(sizeof(*mt), 1);
  63
  64    DBG("%s target %s format %s level %d..%d\n", __FUNCTION__,
  65        _mesa_lookup_enum_by_nr(target),
  66        _mesa_lookup_enum_by_nr(internal_format), first_level, last_level);
  67
  68    mt->target = target_to_target(target);
  69    mt->internal_format = internal_format;
  70    mt->first_level = first_level;
  71    mt->last_level = last_level;
  72    mt->width0 = width0;
  73    mt->height0 = height0;
  74    mt->depth0 = depth0;
  75    mt->cpp = compress_byte ? compress_byte : cpp;
  76    mt->compressed = compress_byte ? 1 : 0;
  77    mt->refcount = 1;
  78
  79    switch (intel->intelScreen->deviceID) {
  80    case PCI_CHIP_I945_G:
  81    case PCI_CHIP_I945_GM:
  82    case PCI_CHIP_I945_GME:
  83    case PCI_CHIP_G33_G:
  84    case PCI_CHIP_Q33_G:
  85    case PCI_CHIP_Q35_G:
  86       ok = i945_miptree_layout(mt);
  87       break;
  88    case PCI_CHIP_I915_G:
  89    case PCI_CHIP_I915_GM:
  90    case PCI_CHIP_I830_M:
  91    case PCI_CHIP_I855_GM:
  92    case PCI_CHIP_I865_G:
  93    default:
  94       /* All the i830 chips and the i915 use this layout:
  95        */
  96       ok = i915_miptree_layout(mt);
  97       break;
  98    }
  99
 100    if (ok) {
 101       if (!mt->compressed) {
 102          /* XXX: Align pitch to multiple of 64 bytes for now to allow
 103           * render-to-texture to work in all cases. This should probably be
 104           * replaced at some point by some scheme to only do this when really
 105           * necessary.
 106           */
 107          mt->pitch = ((mt->pitch * cpp + 63) & ~63) / cpp;
 108       }
 109
 110       mt->region = intel_region_alloc(intel->intelScreen,
 111                                       mt->cpp, mt->pitch, mt->total_height);
 112    }
 113
 114    if (!mt->region) {
 115       free(mt);
 116       return NULL;
 117    }
 118
 119    return mt;
 120 }
 121
 122
 123 void
 124 intel_miptree_reference(struct intel_mipmap_tree **dst,
 125                         struct intel_mipmap_tree *src)
 126 {
 127    src->refcount++;
 128    *dst = src;
 129    DBG("%s %p refcount now %d\n", __FUNCTION__, src, src->refcount);
 130 }
 131
 132 void
 133 intel_miptree_release(struct intel_context *intel,
 134                       struct intel_mipmap_tree **mt)
 135 {
 136    if (!*mt)
 137       return;
 138
 139    DBG("%s %p refcount will be %d\n", __FUNCTION__, *mt, (*mt)->refcount - 1);
 140    if (--(*mt)->refcount <= 0) {
 141       GLuint i;
 142
 143       DBG("%s deleting %p\n", __FUNCTION__, *mt);
 144
 145       intel_region_release(&((*mt)->region));
 146
 147       for (i = 0; i < MAX_TEXTURE_LEVELS; i++)
 148          if ((*mt)->level[i].image_offset)
 149             free((*mt)->level[i].image_offset);
 150
 151       free(*mt);
 152    }
 153    *mt = NULL;
 154 }
 155
 156
 157
 158
 159 /* Can the image be pulled into a unified mipmap tree.  This mirrors
 160  * the completeness test in a lot of ways.
 161  *
 162  * Not sure whether I want to pass gl_texture_image here.
 163  */
 164 GLboolean
 165 intel_miptree_match_image(struct intel_mipmap_tree *mt,
 166                           struct gl_texture_image *image,
 167                           GLuint face, GLuint level)
 168 {
 169    /* Images with borders are never pulled into mipmap trees.
 170     */
 171    if (image->Border)
 172       return GL_FALSE;
 173
 174    if (image->InternalFormat != mt->internal_format ||
 175        image->IsCompressed != mt->compressed)
 176       return GL_FALSE;
 177
 178    /* Test image dimensions against the base level image adjusted for
 179     * minification.  This will also catch images not present in the
 180     * tree, changed targets, etc.
 181     */
 182    if (image->Width != mt->level[level].width ||
 183        image->Height != mt->level[level].height ||
 184        image->Depth != mt->level[level].depth)
 185       return GL_FALSE;
 186
 187    return GL_TRUE;
 188 }
 189
 190
 191 void
 192 intel_miptree_set_level_info(struct intel_mipmap_tree *mt,
 193                              GLuint level,
 194                              GLuint nr_images,
 195                              GLuint x, GLuint y, GLuint w, GLuint h, GLuint d)
 196 {
 197
 198    mt->level[level].width = w;
 199    mt->level[level].height = h;
 200    mt->level[level].depth = d;
 201    mt->level[level].level_offset = (x + y * mt->pitch) * mt->cpp;
 202    mt->level[level].nr_images = nr_images;
 203
 204    DBG("%s level %d size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
 205        level, w, h, d, x, y, mt->level[level].level_offset);
 206
 207    /* Not sure when this would happen, but anyway:
 208     */
 209    if (mt->level[level].image_offset) {
 210       free(mt->level[level].image_offset);
 211       mt->level[level].image_offset = NULL;
 212    }
 213
 214    assert(nr_images);
 215
 216    mt->level[level].image_offset = malloc(nr_images * sizeof(GLuint));
 217    mt->level[level].image_offset[0] = 0;
 218 }
 219
 220
 221
 222 void
 223 intel_miptree_set_image_offset(struct intel_mipmap_tree *mt,
 224                                GLuint level, GLuint img, GLuint x, GLuint y)
 225 {
 226    if (img == 0 && level == 0)
 227       assert(x == 0 && y == 0);
 228
 229    assert(img < mt->level[level].nr_images);
 230
 231    mt->level[level].image_offset[img] = (x + y * mt->pitch);
 232
 233    DBG("%s level %d img %d pos %d,%d image_offset %x\n",
 234        __FUNCTION__, level, img, x, y, mt->level[level].image_offset[img]);
 235 }
 236
 237
 238 /* Although we use the image_offset[] array to store relative offsets
 239  * to cube faces, Mesa doesn't know anything about this and expects
 240  * each cube face to be treated as a separate image.
 241  *
 242  * These functions present that view to mesa:
 243  */
 244 const GLuint *
 245 intel_miptree_depth_offsets(struct intel_mipmap_tree *mt, GLuint level)
 246 {
 247    static const GLuint zero = 0;
 248
 249    if (mt->target != GL_TEXTURE_3D || mt->level[level].nr_images == 1)
 250       return &zero;
 251    else
 252       return mt->level[level].image_offset;
 253 }
 254
 255
 256 GLuint
 257 intel_miptree_image_offset(struct intel_mipmap_tree * mt,
 258                            GLuint face, GLuint level)
 259 {
 260    if (mt->target == GL_TEXTURE_CUBE_MAP_ARB)
 261       return (mt->level[level].level_offset +
 262               mt->level[level].image_offset[face] * mt->cpp);
 263    else
 264       return mt->level[level].level_offset;
 265 }
 266
 267
 268
 269 /**
 270  * Map a teximage in a mipmap tree.
 271  * \param row_stride  returns row stride in bytes
 272  * \param image_stride  returns image stride in bytes (for 3D textures).
 273  * \return address of mapping
 274  */
 275 GLubyte *
 276 intel_miptree_image_map(struct intel_context * intel,
 277                         struct intel_mipmap_tree * mt,
 278                         GLuint face,
 279                         GLuint level,
 280                         GLuint * row_stride, GLuint * image_offsets)
 281 {
 282    DBG("%s \n", __FUNCTION__);
 283
 284    if (row_stride)
 285       *row_stride = mt->pitch * mt->cpp;
 286
 287    if (image_offsets)
 288       memcpy(image_offsets, mt->level[level].image_offset,
 289              mt->level[level].depth * sizeof(GLuint));
 290
 291    return (intel_region_map(intel->intelScreen, mt->region) +
 292            intel_miptree_image_offset(mt, face, level));
 293 }
 294
 295 void
 296 intel_miptree_image_unmap(struct intel_context *intel,
 297                           struct intel_mipmap_tree *mt)
 298 {
 299    DBG("%s\n", __FUNCTION__);
 300    intel_region_unmap(intel->intelScreen, mt->region);
 301 }
 302
 303
 304
 305 /* Upload data for a particular image.
 306  */
 307 void
 308 intel_miptree_image_data(struct intel_context *intel,
 309                          struct intel_mipmap_tree *dst,
 310                          GLuint face,
 311                          GLuint level,
 312                          void *src,
 313                          GLuint src_row_pitch, GLuint src_image_pitch)
 314 {
 315    GLuint depth = dst->level[level].depth;
 316    GLuint dst_offset = intel_miptree_image_offset(dst, face, level);
 317    const GLuint *dst_depth_offset = intel_miptree_depth_offsets(dst, level);
 318    GLuint i;
 319    GLuint height = 0;
 320
 321    DBG("%s\n", __FUNCTION__);
 322    for (i = 0; i < depth; i++) {
 323       height = dst->level[level].height;
 324       if(dst->compressed)
 325          height /= 4;
 326       intel_region_data(intel->intelScreen, dst->region,
 327                         dst_offset + dst_depth_offset[i], /* dst_offset */
 328                         0, 0,                             /* dstx, dsty */
 329                         src,
 330                         src_row_pitch,
 331                         0, 0,                             /* source x, y */
 332                         dst->level[level].width, height); /* width, height */
 333
 334       src += src_image_pitch * dst->cpp;
 335    }
 336 }
 337
 338 extern GLuint intel_compressed_alignment(GLenum);
 339 /* Copy mipmap image between trees
 340  */
 341 void
 342 intel_miptree_image_copy(struct intel_context *intel,
 343                          struct intel_mipmap_tree *dst,
 344                          GLuint face, GLuint level,
 345                          struct intel_mipmap_tree *src)
 346 {
 347    GLuint width = src->level[level].width;
 348    GLuint height = src->level[level].height;
 349    GLuint depth = src->level[level].depth;
 350    GLuint dst_offset = intel_miptree_image_offset(dst, face, level);
 351    GLuint src_offset = intel_miptree_image_offset(src, face, level);
 352    const GLuint *dst_depth_offset = intel_miptree_depth_offsets(dst, level);
 353    const GLuint *src_depth_offset = intel_miptree_depth_offsets(src, level);
 354    GLuint i;
 355
 356    if (dst->compressed) {
 357        GLuint alignment = intel_compressed_alignment(dst->internal_format);
 358        height = (height + 3) / 4;
 359        width = ((width + alignment - 1) & ~(alignment - 1));
 360    }
 361
 362    for (i = 0; i < depth; i++) {
 363       intel_region_copy(intel->intelScreen,
 364                         dst->region, dst_offset + dst_depth_offset[i],
 365                         0,
 366                         0,
 367                         src->region, src_offset + src_depth_offset[i],
 368                         0, 0, width, height);
 369    }
 370
 371 }