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