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