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 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 }