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 */
20static void
21intel_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 */
42GLuint
43intel_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