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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 "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.                                           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(intel, 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.