src/mesa/drivers/dri/i915tex/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       mt->region = intel_region_alloc(intel->intelScreen,
 102                                       mt->cpp, mt->pitch, mt->total_height);
 103
 104    if (!mt->region) {
 105       free(mt);
 106       return NULL;
 107    }
 108
 109    return mt;
 110 }
 111
 112
 113 void
 114 intel_miptree_reference(struct intel_mipmap_tree **dst,
 115                         struct intel_mipmap_tree *src)
 116 {
 117    src->refcount++;
 118    *dst = src;
 119    DBG("%s %p refcount now %d\n", __FUNCTION__, src, src->refcount);
 120 }
 121
 122 void
 123 intel_miptree_release(struct intel_context *intel,
 124                       struct intel_mipmap_tree **mt)
 125 {
 126    if (!*mt)
 127       return;
 128
 129    DBG("%s %p refcount will be %d\n", __FUNCTION__, *mt, (*mt)->refcount - 1);
 130    if (--(*mt)->refcount <= 0) {
 131       GLuint i;
 132
 133       DBG("%s deleting %p\n", __FUNCTION__, *mt);
 134
 135       intel_region_release(&((*mt)->region));
 136
 137       for (i = 0; i < MAX_TEXTURE_LEVELS; i++)
 138          if ((*mt)->level[i].image_offset)
 139             free((*mt)->level[i].image_offset);
 140
 141       free(*mt);
 142    }
 143    *mt = NULL;
 144 }
 145
 146
 147
 148
 149 /* Can the image be pulled into a unified mipmap tree.  This mirrors
 150  * the completeness test in a lot of ways.
 151  *
 152  * Not sure whether I want to pass gl_texture_image here.
 153  */
 154 GLboolean
 155 intel_miptree_match_image(struct intel_mipmap_tree *mt,
 156                           struct gl_texture_image *image,
 157                           GLuint face, GLuint level)
 158 {
 159    /* Images with borders are never pulled into mipmap trees.
 160     */
 161    if (image->Border)
 162       return GL_FALSE;
 163
 164    if (image->InternalFormat != mt->internal_format ||
 165        image->IsCompressed != mt->compressed)
 166       return GL_FALSE;
 167
 168    /* Test image dimensions against the base level image adjusted for
 169     * minification.  This will also catch images not present in the
 170     * tree, changed targets, etc.
 171     */
 172    if (image->Width != mt->level[level].width ||
 173        image->Height != mt->level[level].height ||
 174        image->Depth != mt->level[level].depth)
 175       return GL_FALSE;
 176
 177    return GL_TRUE;
 178 }
 179
 180
 181 void
 182 intel_miptree_set_level_info(struct intel_mipmap_tree *mt,
 183                              GLuint level,
 184                              GLuint nr_images,
 185                              GLuint x, GLuint y, GLuint w, GLuint h, GLuint d)
 186 {
 187
 188    mt->level[level].width = w;
 189    mt->level[level].height = h;
 190    mt->level[level].depth = d;
 191    mt->level[level].level_offset = (x + y * mt->pitch) * mt->cpp;
 192    mt->level[level].nr_images = nr_images;
 193
 194    DBG("%s level %d size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
 195        level, w, h, d, x, y, mt->level[level].level_offset);
 196
 197    /* Not sure when this would happen, but anyway:
 198     */
 199    if (mt->level[level].image_offset) {
 200       free(mt->level[level].image_offset);
 201       mt->level[level].image_offset = NULL;
 202    }
 203
 204    assert(nr_images);
 205
 206    mt->level[level].image_offset = malloc(nr_images * sizeof(GLuint));
 207    mt->level[level].image_offset[0] = 0;
 208 }
 209
 210
 211
 212 void
 213 intel_miptree_set_image_offset(struct intel_mipmap_tree *mt,
 214                                GLuint level, GLuint img, GLuint x, GLuint y)
 215 {
 216    if (img == 0 && level == 0)
 217       assert(x == 0 && y == 0);
 218
 219    assert(img < mt->level[level].nr_images);
 220
 221    mt->level[level].image_offset[img] = (x + y * mt->pitch);
 222
 223    DBG("%s level %d img %d pos %d,%d image_offset %x\n",
 224        __FUNCTION__, level, img, x, y, mt->level[level].image_offset[img]);
 225 }
 226
 227
 228 /* Although we use the image_offset[] array to store relative offsets
 229  * to cube faces, Mesa doesn't know anything about this and expects
 230  * each cube face to be treated as a separate image.
 231  *
 232  * These functions present that view to mesa:
 233  */
 234 const GLuint *
 235 intel_miptree_depth_offsets(struct intel_mipmap_tree *mt, GLuint level)
 236 {
 237    static const GLuint zero = 0;
 238
 239    if (mt->target != GL_TEXTURE_3D || mt->level[level].nr_images == 1)
 240       return &zero;
 241    else
 242       return mt->level[level].image_offset;
 243 }
 244
 245
 246 GLuint
 247 intel_miptree_image_offset(struct intel_mipmap_tree * mt,
 248                            GLuint face, GLuint level)
 249 {
 250    if (mt->target == GL_TEXTURE_CUBE_MAP_ARB)
 251       return (mt->level[level].level_offset +
 252               mt->level[level].image_offset[face] * mt->cpp);
 253    else
 254       return mt->level[level].level_offset;
 255 }
 256
 257
 258
 259 /**
 260  * Map a teximage in a mipmap tree.
 261  * \param row_stride  returns row stride in bytes
 262  * \param image_stride  returns image stride in bytes (for 3D textures).
 263  * \return address of mapping
 264  */
 265 GLubyte *
 266 intel_miptree_image_map(struct intel_context * intel,
 267                         struct intel_mipmap_tree * mt,
 268                         GLuint face,
 269                         GLuint level,
 270                         GLuint * row_stride, GLuint * image_offsets)
 271 {
 272    DBG("%s \n", __FUNCTION__);
 273
 274    if (row_stride)
 275       *row_stride = mt->pitch * mt->cpp;
 276
 277    if (image_offsets)
 278       memcpy(image_offsets, mt->level[level].image_offset,
 279              mt->level[level].depth * sizeof(GLuint));
 280
 281    return (intel_region_map(intel->intelScreen, mt->region) +
 282            intel_miptree_image_offset(mt, face, level));
 283 }
 284
 285 void
 286 intel_miptree_image_unmap(struct intel_context *intel,
 287                           struct intel_mipmap_tree *mt)
 288 {
 289    DBG("%s\n", __FUNCTION__);
 290    intel_region_unmap(intel->intelScreen, mt->region);
 291 }
 292
 293
 294
 295 /* Upload data for a particular image.
 296  */
 297 void
 298 intel_miptree_image_data(struct intel_context *intel,
 299                          struct intel_mipmap_tree *dst,
 300                          GLuint face,
 301                          GLuint level,
 302                          void *src,
 303                          GLuint src_row_pitch, GLuint src_image_pitch)
 304 {
 305    GLuint depth = dst->level[level].depth;
 306    GLuint dst_offset = intel_miptree_image_offset(dst, face, level);
 307    const GLuint *dst_depth_offset = intel_miptree_depth_offsets(dst, level);
 308    GLuint i;
 309    GLuint height = 0;
 310
 311    DBG("%s\n", __FUNCTION__);
 312    for (i = 0; i < depth; i++) {
 313       height = dst->level[level].height;
 314       if(dst->compressed)
 315          height /= 4;
 316       intel_region_data(intel->intelScreen, dst->region,
 317                         dst_offset + dst_depth_offset[i], /* dst_offset */
 318                         0, 0,                             /* dstx, dsty */
 319                         src,
 320                         src_row_pitch,
 321                         0, 0,                             /* source x, y */
 322                         dst->level[level].width, height); /* width, height */
 323
 324       src += src_image_pitch * dst->cpp;
 325    }
 326 }
 327
 328 /* Copy mipmap image between trees
 329  */
 330 void
 331 intel_miptree_image_copy(struct intel_context *intel,
 332                          struct intel_mipmap_tree *dst,
 333                          GLuint face, GLuint level,
 334                          struct intel_mipmap_tree *src)
 335 {
 336    GLuint width = src->level[level].width;
 337    GLuint height = src->level[level].height;
 338    GLuint depth = src->level[level].depth;
 339    GLuint dst_offset = intel_miptree_image_offset(dst, face, level);
 340    GLuint src_offset = intel_miptree_image_offset(src, face, level);
 341    const GLuint *dst_depth_offset = intel_miptree_depth_offsets(dst, level);
 342    const GLuint *src_depth_offset = intel_miptree_depth_offsets(src, level);
 343    GLuint i;
 344
 345    if (dst->compressed)
 346       height /= 4;
 347    for (i = 0; i < depth; i++) {
 348       intel_region_copy(intel->intelScreen,
 349                         dst->region, dst_offset + dst_depth_offset[i],
 350                         0,
 351                         0,
 352                         src->region, src_offset + src_depth_offset[i],
 353                         0, 0, width, height);
 354    }
 355
 356 }