src/mesa/drivers/dri/i965/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 "brw_context.h"
   7 #include "intel_mipmap_tree.h"
   8 #include "intel_blit.h"
   9 #include "intel_tex.h"
  10
  11 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  12
  13 /**
  14  * When validating, we only care about the texture images that could
  15  * be seen, so for non-mipmapped modes we want to ignore everything
  16  * but BaseLevel.
  17  */
  18 static void
  19 intel_update_max_level(struct intel_texture_object *intelObj,
  20                        struct gl_sampler_object *sampler)
  21 {
  22    struct gl_texture_object *tObj = &intelObj->base;
  23    int maxlevel;
  24
  25    if (sampler->MinFilter == GL_NEAREST ||
  26        sampler->MinFilter == GL_LINEAR) {
  27       maxlevel = tObj->BaseLevel;
  28    } else {
  29       maxlevel = tObj->_MaxLevel;
  30    }
  31
  32    if (intelObj->_MaxLevel != maxlevel) {
  33       intelObj->_MaxLevel = maxlevel;
  34       intelObj->needs_validate = true;
  35    }
  36 }
  37
  38 /*
  39  */
  40 GLuint
  41 intel_finalize_mipmap_tree(struct brw_context *brw, GLuint unit)
  42 {
  43    struct intel_context *intel = &brw->intel;
  44    struct gl_context *ctx = &intel->ctx;
  45    struct gl_texture_object *tObj = 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(brw,
 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                                           INTEL_MIPTREE_TILING_ANY);
 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(brw, intelImage, intelObj->mt,
 127                                         false /* invalidate */);
 128          }
 129
 130          /* After we're done, we'd better agree that our layout is
 131           * appropriate, or we'll end up hitting this function again on the
 132           * next draw
 133           */
 134          assert(intel_miptree_match_image(intelObj->mt, &intelImage->base.Base));
 135       }
 136    }
 137
 138    intelObj->needs_validate = false;
 139
 140    return true;
 141 }