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  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 gl_context *ctx = &brw->ctx;
  44.    struct gl_texture_object *tObj = ctx->Texture.Unit[unit]._Current;
  45.    struct intel_texture_object *intelObj = intel_texture_object(tObj);
  46.    struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit);
  47.    GLuint face, i;
  48.    GLuint nr_faces = 0;
  49.    struct intel_texture_image *firstImage;
  50.    int width, height, depth;
  51.  
  52.    /* TBOs require no validation -- they always just point to their BO. */
  53.    if (tObj->Target == GL_TEXTURE_BUFFER)
  54.       return true;
  55.  
  56.    /* We know/require this is true by now:
  57.     */
  58.    assert(intelObj->base._BaseComplete);
  59.  
  60.    /* What levels must the tree include at a minimum?
  61.     */
  62.    intel_update_max_level(intelObj, sampler);
  63.    if (intelObj->mt && intelObj->mt->first_level != tObj->BaseLevel)
  64.       intelObj->needs_validate = true;
  65.  
  66.    if (!intelObj->needs_validate)
  67.       return true;
  68.  
  69.    firstImage = intel_texture_image(tObj->Image[0][tObj->BaseLevel]);
  70.  
  71.    /* Check tree can hold all active levels.  Check tree matches
  72.     * target, imageFormat, etc.
  73.     *
  74.     * For pre-gen4, we have to match first_level == tObj->BaseLevel,
  75.     * because we don't have the control that gen4 does to make min/mag
  76.     * determination happen at a nonzero (hardware) baselevel.  Because
  77.     * of that, we just always relayout on baselevel change.
  78.     */
  79.    if (intelObj->mt &&
  80.        (!intel_miptree_match_image(intelObj->mt, &firstImage->base.Base) ||
  81.         intelObj->mt->first_level != tObj->BaseLevel ||
  82.         intelObj->mt->last_level < intelObj->_MaxLevel)) {
  83.       intel_miptree_release(&intelObj->mt);
  84.    }
  85.  
  86.  
  87.    /* May need to create a new tree:
  88.     */
  89.    if (!intelObj->mt) {
  90.       intel_miptree_get_dimensions_for_image(&firstImage->base.Base,
  91.                                              &width, &height, &depth);
  92.  
  93.       perf_debug("Creating new %s %dx%dx%d %d..%d miptree to handle finalized "
  94.                  "texture miptree.\n",
  95.                  _mesa_get_format_name(firstImage->base.Base.TexFormat),
  96.                  width, height, depth, tObj->BaseLevel, intelObj->_MaxLevel);
  97.  
  98.       intelObj->mt = intel_miptree_create(brw,
  99.                                           intelObj->base.Target,
  100.                                           firstImage->base.Base.TexFormat,
  101.                                           tObj->BaseLevel,
  102.                                           intelObj->_MaxLevel,
  103.                                           width,
  104.                                           height,
  105.                                           depth,
  106.                                           true,
  107.                                           0 /* num_samples */,
  108.                                           INTEL_MIPTREE_TILING_ANY);
  109.       if (!intelObj->mt)
  110.          return false;
  111.    }
  112.  
  113.    /* Pull in any images not in the object's tree:
  114.     */
  115.    nr_faces = _mesa_num_tex_faces(intelObj->base.Target);
  116.    for (face = 0; face < nr_faces; face++) {
  117.       for (i = tObj->BaseLevel; i <= intelObj->_MaxLevel; i++) {
  118.          struct intel_texture_image *intelImage =
  119.             intel_texture_image(intelObj->base.Image[face][i]);
  120.          /* skip too small size mipmap */
  121.          if (intelImage == NULL)
  122.                  break;
  123.  
  124.          if (intelObj->mt != intelImage->mt) {
  125.             intel_miptree_copy_teximage(brw, intelImage, intelObj->mt,
  126.                                         false /* invalidate */);
  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.