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      1 #include "main/mtypes.h"
      2 #include "main/macros.h"
      3 #include "main/samplerobj.h"
      4 #include "main/teximage.h"
      5 #include "main/texobj.h"
      6 
      7 #include "intel_context.h"
      8 #include "intel_mipmap_tree.h"
      9 #include "intel_blit.h"
     10 #include "intel_tex.h"
     11 #include "intel_tex_layout.h"
     12 
     13 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
     14 
     15 /**
     16  * When validating, we only care about the texture images that could
     17  * be seen, so for non-mipmapped modes we want to ignore everything
     18  * but BaseLevel.
     19  */
     20 static void
     21 intel_update_max_level(struct intel_texture_object *intelObj,
     22 		       struct gl_sampler_object *sampler)
     23 {
     24    struct gl_texture_object *tObj = &intelObj->base;
     25    int maxlevel;
     26 
     27    if (sampler->MinFilter == GL_NEAREST ||
     28        sampler->MinFilter == GL_LINEAR) {
     29       maxlevel = tObj->BaseLevel;
     30    } else {
     31       maxlevel = tObj->_MaxLevel;
     32    }
     33 
     34    if (intelObj->_MaxLevel != maxlevel) {
     35       intelObj->_MaxLevel = maxlevel;
     36       intelObj->needs_validate = true;
     37    }
     38 }
     39 
     40 /*
     41  */
     42 GLuint
     43 intel_finalize_mipmap_tree(struct intel_context *intel, GLuint unit)
     44 {
     45    struct gl_context *ctx = &intel->ctx;
     46    struct gl_texture_object *tObj = intel->ctx.Texture.Unit[unit]._Current;
     47    struct intel_texture_object *intelObj = intel_texture_object(tObj);
     48    struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit);
     49    GLuint face, i;
     50    GLuint nr_faces = 0;
     51    struct intel_texture_image *firstImage;
     52    int width, height, depth;
     53 
     54    /* TBOs require no validation -- they always just point to their BO. */
     55    if (tObj->Target == GL_TEXTURE_BUFFER)
     56       return true;
     57 
     58    /* We know/require this is true by now:
     59     */
     60    assert(intelObj->base._BaseComplete);
     61 
     62    /* What levels must the tree include at a minimum?
     63     */
     64    intel_update_max_level(intelObj, sampler);
     65    if (intelObj->mt && intelObj->mt->first_level != tObj->BaseLevel)
     66       intelObj->needs_validate = true;
     67 
     68    if (!intelObj->needs_validate)
     69       return true;
     70 
     71    firstImage = intel_texture_image(tObj->Image[0][tObj->BaseLevel]);
     72 
     73    /* Check tree can hold all active levels.  Check tree matches
     74     * target, imageFormat, etc.
     75     *
     76     * For pre-gen4, we have to match first_level == tObj->BaseLevel,
     77     * because we don't have the control that gen4 does to make min/mag
     78     * determination happen at a nonzero (hardware) baselevel.  Because
     79     * of that, we just always relayout on baselevel change.
     80     */
     81    if (intelObj->mt &&
     82        (!intel_miptree_match_image(intelObj->mt, &firstImage->base.Base) ||
     83 	intelObj->mt->first_level != tObj->BaseLevel ||
     84 	intelObj->mt->last_level < intelObj->_MaxLevel)) {
     85       intel_miptree_release(&intelObj->mt);
     86    }
     87 
     88 
     89    /* May need to create a new tree:
     90     */
     91    if (!intelObj->mt) {
     92       intel_miptree_get_dimensions_for_image(&firstImage->base.Base,
     93 					     &width, &height, &depth);
     94 
     95       perf_debug("Creating new %s %dx%dx%d %d..%d miptree to handle finalized "
     96                  "texture miptree.\n",
     97                  _mesa_get_format_name(firstImage->base.Base.TexFormat),
     98                  width, height, depth, tObj->BaseLevel, intelObj->_MaxLevel);
     99 
    100       intelObj->mt = intel_miptree_create(intel,
    101                                           intelObj->base.Target,
    102 					  firstImage->base.Base.TexFormat,
    103                                           tObj->BaseLevel,
    104                                           intelObj->_MaxLevel,
    105                                           width,
    106                                           height,
    107                                           depth,
    108 					  true,
    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(intel, 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 }
    142