src/mesa/drivers/dri/i965/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 "dri_bufmgr.h"
  32 #include "enums.h"
  33 #include "imports.h"
  34
  35 #define FILE_DEBUG_FLAG DEBUG_MIPTREE
  36
  37 static GLenum target_to_target( GLenum target )
  38 {
  39    switch (target) {
  40    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
  41    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
  42    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
  43    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
  44    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
  45    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
  46       return GL_TEXTURE_CUBE_MAP_ARB;
  47    default:
  48       return target;
  49    }
  50 }
  51
  52 struct intel_mipmap_tree *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,
  60                                                 GLuint cpp,
  61                                                 GLboolean compressed)
  62 {
  63    GLboolean ok;
  64    struct intel_mipmap_tree *mt = calloc(sizeof(*mt), 1);
  65
  66    if (INTEL_DEBUG & DEBUG_TEXTURE)
  67       _mesa_printf("%s target %s format %s level %d..%d\n", __FUNCTION__,
  68                    _mesa_lookup_enum_by_nr(target),
  69                    _mesa_lookup_enum_by_nr(internal_format),
  70                    first_level,
  71                    last_level);
  72
  73    mt->target = target_to_target(target);
  74    mt->internal_format = internal_format;
  75    mt->first_level = first_level;
  76    mt->last_level = last_level;
  77    mt->width0 = width0;
  78    mt->height0 = height0;
  79    mt->depth0 = depth0;
  80    mt->cpp = cpp;
  81    mt->compressed = compressed;
  82
  83    switch (intel->intelScreen->deviceID) {
  84 #if 0
  85    case PCI_CHIP_I945_G:
  86       ok = i945_miptree_layout( mt );
  87       break;
  88    case PCI_CHIP_I915_G:
  89    case PCI_CHIP_I915_GM:
  90       ok = i915_miptree_layout( mt );
  91       break;
  92 #endif
  93    default:
  94       if (INTEL_DEBUG & DEBUG_TEXTURE)
  95          _mesa_printf("assuming BRW texture layouts\n");
  96       ok = brw_miptree_layout( mt );
  97       break;
  98    }
  99
 100    if (ok)
 101       mt->region = intel_region_alloc( intel,
 102                                        mt->cpp,
 103                                        mt->pitch,
 104                                        mt->total_height );
 105
 106    if (!mt->region) {
 107       free(mt);
 108       return NULL;
 109    }
 110
 111    return mt;
 112 }
 113
 114
 115
 116 void intel_miptree_destroy( struct intel_context *intel,
 117                             struct intel_mipmap_tree *mt )
 118 {
 119    if (mt) {
 120       GLuint i;
 121
 122       intel_region_release(intel, &(mt->region));
 123
 124       for (i = 0; i < MAX_TEXTURE_LEVELS; i++)
 125          if (mt->level[i].image_offset)
 126             free(mt->level[i].image_offset);
 127
 128       free(mt);
 129    }
 130 }
 131
 132
 133
 134
 135 void intel_miptree_set_level_info(struct intel_mipmap_tree *mt,
 136                                   GLuint level,
 137                                   GLuint nr_images,
 138                                   GLuint x, GLuint y,
 139                                   GLuint w, GLuint h, GLuint d)
 140 {
 141    mt->level[level].width = w;
 142    mt->level[level].height = h;
 143    mt->level[level].depth = d;
 144    mt->level[level].level_offset = (x + y * mt->pitch) * mt->cpp;
 145    mt->level[level].nr_images = nr_images;
 146
 147    if (INTEL_DEBUG & DEBUG_TEXTURE)
 148       _mesa_printf("%s level %d img size: %d,%d level_offset 0x%x\n", __FUNCTION__, level, w, h,
 149                    mt->level[level].level_offset);
 150
 151    /* Not sure when this would happen, but anyway:
 152     */
 153    if (mt->level[level].image_offset) {
 154       free(mt->level[level].image_offset);
 155       mt->level[level].image_offset = NULL;
 156    }
 157
 158    if (nr_images > 1) {
 159       mt->level[level].image_offset = malloc(nr_images * sizeof(GLuint));
 160       mt->level[level].image_offset[0] = 0;
 161    }
 162 }
 163
 164
 165
 166 void intel_miptree_set_image_offset(struct intel_mipmap_tree *mt,
 167                                     GLuint level,
 168                                     GLuint img,
 169                                     GLuint x, GLuint y)
 170 {
 171    if (INTEL_DEBUG & DEBUG_TEXTURE)
 172       _mesa_printf("%s level %d img %d pos %d,%d\n", __FUNCTION__, level, img, x, y);
 173
 174    if (img == 0)
 175       assert(x == 0 && y == 0);
 176
 177    if (img > 0)
 178       mt->level[level].image_offset[img] = (x + y * mt->pitch) * mt->cpp;
 179 }
 180
 181
 182 /* Although we use the image_offset[] array to store relative offsets
 183  * to cube faces, Mesa doesn't know anything about this and expects
 184  * each cube face to be treated as a separate image.
 185  *
 186  * These functions present that view to mesa:
 187  */
 188 const GLuint *intel_miptree_depth_offsets(struct intel_mipmap_tree *mt,
 189                                           GLuint level)
 190 {
 191    static const GLuint zero = 0;
 192
 193    if (mt->target != GL_TEXTURE_3D ||
 194        mt->level[level].nr_images == 1)
 195       return &zero;
 196    else
 197       return mt->level[level].image_offset;
 198 }
 199
 200
 201 GLuint intel_miptree_image_offset(struct intel_mipmap_tree *mt,
 202                                   GLuint face,
 203                                   GLuint level)
 204 {
 205    if (mt->target == GL_TEXTURE_CUBE_MAP_ARB)
 206       return (mt->level[level].level_offset +
 207               mt->level[level].image_offset[face]);
 208    else
 209       return mt->level[level].level_offset;
 210 }
 211
 212
 213
 214
 215
 216 extern GLuint intel_compressed_alignment(GLenum);
 217 /* Upload data for a particular image.
 218  */
 219 GLboolean intel_miptree_image_data(struct intel_context *intel,
 220                                    struct intel_mipmap_tree *dst,
 221                                    GLuint face,
 222                                    GLuint level,
 223                                    const void *src,
 224                                    GLuint src_row_pitch,
 225                                    GLuint src_image_pitch)
 226 {
 227    GLuint depth = dst->level[level].depth;
 228    GLuint dst_offset = intel_miptree_image_offset(dst, face, level);
 229    const GLuint *dst_depth_offset = intel_miptree_depth_offsets(dst, level);
 230    GLuint i;
 231    GLuint width, height, alignment;
 232
 233    width = dst->level[level].width;
 234    height = dst->level[level].height;
 235
 236    if (dst->compressed) {
 237        alignment = intel_compressed_alignment(dst->internal_format);
 238        src_row_pitch = ALIGN(src_row_pitch, alignment);
 239        width = ALIGN(width, alignment);
 240        height = (height + 3) / 4;
 241    }
 242
 243    DBG("%s\n", __FUNCTION__);
 244    for (i = 0; i < depth; i++) {
 245       if (!intel_region_data(intel,
 246                              dst->region,
 247                              dst_offset + dst_depth_offset[i],
 248                              0,
 249                              0,
 250                              src,
 251                              src_row_pitch,
 252                              0, 0,      /* source x,y */
 253                              width,
 254                              height))
 255          return GL_FALSE;
 256       src += src_image_pitch;
 257    }
 258    return GL_TRUE;
 259 }
 260