src/mesa/drivers/dri/intel/intel_tex_validate.c

   1 #include "main/mtypes.h"
   2 #include "main/macros.h"
   3 #include "main/samplerobj.h"
   4 #include "main/texobj.h"
   5
   6 #include "intel_context.h"
   7 #include "intel_mipmap_tree.h"
   8 #include "intel_blit.h"
   9 #include "intel_tex.h"
  10 #include "intel_tex_layout.h"
  11
  12 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  13
  14 /**
  15  * When validating, we only care about the texture images that could
  16  * be seen, so for non-mipmapped modes we want to ignore everything
  17  * but BaseLevel.
  18  */
  19 static void
  20 intel_update_max_level(struct intel_texture_object *intelObj,
  21                        struct gl_sampler_object *sampler)
  22 {
  23    struct gl_texture_object *tObj = &intelObj->base;
  24    int maxlevel;
  25
  26    if (sampler->MinFilter == GL_NEAREST ||
  27        sampler->MinFilter == GL_LINEAR) {
  28       maxlevel = tObj->BaseLevel;
  29    } else {
  30       maxlevel = tObj->_MaxLevel;
  31    }
  32
  33    if (intelObj->_MaxLevel != maxlevel) {
  34       intelObj->_MaxLevel = maxlevel;
  35       intelObj->needs_validate = true;
  36    }
  37 }
  38
  39 /*
  40  */
  41 GLuint
  42 intel_finalize_mipmap_tree(struct intel_context *intel, GLuint unit)
  43 {
  44    struct gl_context *ctx = &intel->ctx;
  45    struct gl_texture_object *tObj = intel->ctx.Texture.Unit[unit]._Current;
  46    struct intel_texture_object *intelObj = intel_texture_object(tObj);
  47    struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit);
  48    GLuint face, i;
  49    GLuint nr_faces = 0;
  50    struct intel_texture_image *firstImage;
  51    int width, height, depth;
  52
  53    /* TBOs require no validation -- they always just point to their BO. */
  54    if (tObj->Target == GL_TEXTURE_BUFFER)
  55       return true;
  56
  57    /* We know/require this is true by now:
  58     */
  59    assert(intelObj->base._BaseComplete);
  60
  61    /* What levels must the tree include at a minimum?
  62     */
  63    intel_update_max_level(intelObj, sampler);
  64    if (intelObj->mt && intelObj->mt->first_level != tObj->BaseLevel)
  65       intelObj->needs_validate = true;
  66
  67    if (!intelObj->needs_validate)
  68       return true;
  69
  70    firstImage = intel_texture_image(tObj->Image[0][tObj->BaseLevel]);
  71
  72    /* Check tree can hold all active levels.  Check tree matches
  73     * target, imageFormat, etc.
  74     *
  75     * For pre-gen4, we have to match first_level == tObj->BaseLevel,
  76     * because we don't have the control that gen4 does to make min/mag
  77     * determination happen at a nonzero (hardware) baselevel.  Because
  78     * of that, we just always relayout on baselevel change.
  79     */
  80    if (intelObj->mt &&
  81        (!intel_miptree_match_image(intelObj->mt, &firstImage->base.Base) ||
  82         intelObj->mt->first_level != tObj->BaseLevel ||
  83         intelObj->mt->last_level < intelObj->_MaxLevel)) {
  84       intel_miptree_release(&intelObj->mt);
  85    }
  86
  87
  88    /* May need to create a new tree:
  89     */
  90    if (!intelObj->mt) {
  91       intel_miptree_get_dimensions_for_image(&firstImage->base.Base,
  92                                              &width, &height, &depth);
  93
  94       perf_debug("Creating new %s %dx%dx%d %d..%d miptree to handle finalized "
  95                  "texture miptree.\n",
  96                  _mesa_get_format_name(firstImage->base.Base.TexFormat),
  97                  width, height, depth, tObj->BaseLevel, intelObj->_MaxLevel);
  98
  99       intelObj->mt = intel_miptree_create(intel,
 100                                           intelObj->base.Target,
 101                                           firstImage->base.Base.TexFormat,
 102                                           tObj->BaseLevel,
 103                                           intelObj->_MaxLevel,
 104                                           width,
 105                                           height,
 106                                           depth,
 107                                           true,
 108                                           0 /* num_samples */,
 109                                           false /* force_y_tiling */);
 110       if (!intelObj->mt)
 111          return false;
 112    }
 113
 114    /* Pull in any images not in the object's tree:
 115     */
 116    nr_faces = _mesa_num_tex_faces(intelObj->base.Target);
 117    for (face = 0; face < nr_faces; face++) {
 118       for (i = tObj->BaseLevel; i <= intelObj->_MaxLevel; i++) {
 119          struct intel_texture_image *intelImage =
 120             intel_texture_image(intelObj->base.Image[face][i]);
 121          /* skip too small size mipmap */
 122          if (intelImage == NULL)
 123                  break;
 124
 125          if (intelObj->mt != intelImage->mt) {
 126             intel_miptree_copy_teximage(intel, intelImage, intelObj->mt);
 127          }
 128
 129          /* After we're done, we'd better agree that our layout is
 130           * appropriate, or we'll end up hitting this function again on the
 131           * next draw
 132           */
 133          assert(intel_miptree_match_image(intelObj->mt, &intelImage->base.Base));
 134       }
 135    }
 136
 137    intelObj->needs_validate = false;
 138
 139    return true;
 140 }
 141
 142 /**
 143  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
 144  */
 145 static void
 146 intel_tex_map_image_for_swrast(struct intel_context *intel,
 147                                struct intel_texture_image *intel_image,
 148                                GLbitfield mode)
 149 {
 150    int level;
 151    int face;
 152    struct intel_mipmap_tree *mt;
 153    unsigned int x, y;
 154
 155    if (!intel_image || !intel_image->mt)
 156       return;
 157
 158    level = intel_image->base.Base.Level;
 159    face = intel_image->base.Base.Face;
 160    mt = intel_image->mt;
 161
 162    for (int i = 0; i < mt->level[level].depth; i++)
 163       intel_miptree_slice_resolve_depth(intel, mt, level, i);
 164
 165    if (mt->target == GL_TEXTURE_3D ||
 166        mt->target == GL_TEXTURE_2D_ARRAY ||
 167        mt->target == GL_TEXTURE_1D_ARRAY) {
 168       int i;
 169
 170       /* ImageOffsets[] is only used for swrast's fetch_texel_3d, so we can't
 171        * share code with the normal path.
 172        */
 173       for (i = 0; i < mt->level[level].depth; i++) {
 174          intel_miptree_get_image_offset(mt, level, i, &x, &y);
 175          intel_image->base.ImageOffsets[i] = x + y * (mt->region->pitch /
 176                                                       mt->region->cpp);
 177       }
 178
 179       DBG("%s \n", __FUNCTION__);
 180
 181       intel_image->base.Map = intel_region_map(intel, mt->region, mode);
 182    } else {
 183       assert(intel_image->base.Base.Depth == 1);
 184       intel_miptree_get_image_offset(mt, level, face, &x, &y);
 185
 186       DBG("%s: (%d,%d) -> (%d, %d)/%d\n",
 187           __FUNCTION__, face, level, x, y, mt->region->pitch);
 188
 189       intel_image->base.Map = intel_region_map(intel, mt->region, mode) +
 190          x * mt->cpp + y * mt->region->pitch;
 191    }
 192
 193    assert(mt->region->pitch % mt->region->cpp == 0);
 194    intel_image->base.RowStride = mt->region->pitch / mt->region->cpp;
 195 }
 196
 197 static void
 198 intel_tex_unmap_image_for_swrast(struct intel_context *intel,
 199                                  struct intel_texture_image *intel_image)
 200 {
 201    if (intel_image && intel_image->mt) {
 202       intel_region_unmap(intel, intel_image->mt->region);
 203       intel_image->base.Map = NULL;
 204    }
 205 }
 206
 207 /**
 208  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
 209  */
 210 void
 211 intel_tex_map_images(struct intel_context *intel,
 212                      struct intel_texture_object *intelObj,
 213                      GLbitfield mode)
 214 {
 215    GLuint nr_faces = _mesa_num_tex_faces(intelObj->base.Target);
 216    int i, face;
 217
 218    DBG("%s\n", __FUNCTION__);
 219
 220    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
 221       for (face = 0; face < nr_faces; face++) {
 222          struct intel_texture_image *intel_image =
 223             intel_texture_image(intelObj->base.Image[face][i]);
 224
 225          intel_tex_map_image_for_swrast(intel, intel_image, mode);
 226       }
 227    }
 228 }
 229
 230 void
 231 intel_tex_unmap_images(struct intel_context *intel,
 232                        struct intel_texture_object *intelObj)
 233 {
 234    GLuint nr_faces = _mesa_num_tex_faces(intelObj->base.Target);
 235    int i, face;
 236
 237    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
 238       for (face = 0; face < nr_faces; face++) {
 239          struct intel_texture_image *intel_image =
 240             intel_texture_image(intelObj->base.Image[face][i]);
 241
 242          intel_tex_unmap_image_for_swrast(intel, intel_image);
 243       }
 244    }
 245 }