intel_tex_validate.c revision 46751edca9a95baff81771aa69986fa6e2422ed6 
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 */
19static void
20intel_update_max_level(struct intel_texture_object *intelObj,
21		       struct gl_sampler_object *sampler)
22{
23   struct gl_texture_object *tObj = &intelObj->base;
24
25   if (sampler->MinFilter == GL_NEAREST ||
26       sampler->MinFilter == GL_LINEAR) {
27      intelObj->_MaxLevel = tObj->BaseLevel;
28   } else {
29      intelObj->_MaxLevel = tObj->_MaxLevel;
30   }
31}
32
33/*
34 */
35GLuint
36intel_finalize_mipmap_tree(struct intel_context *intel, GLuint unit)
37{
38   struct gl_context *ctx = &intel->ctx;
39   struct gl_texture_object *tObj = intel->ctx.Texture.Unit[unit]._Current;
40   struct intel_texture_object *intelObj = intel_texture_object(tObj);
41   struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit);
42   GLuint face, i;
43   GLuint nr_faces = 0;
44   struct intel_texture_image *firstImage;
45   int width, height, depth;
46
47   /* TBOs require no validation -- they always just point to their BO. */
48   if (tObj->Target == GL_TEXTURE_BUFFER)
49      return true;
50
51   /* We know/require this is true by now:
52    */
53   assert(intelObj->base._BaseComplete);
54
55   /* What levels must the tree include at a minimum?
56    */
57   intel_update_max_level(intelObj, sampler);
58   firstImage = intel_texture_image(tObj->Image[0][tObj->BaseLevel]);
59
60   /* Check tree can hold all active levels.  Check tree matches
61    * target, imageFormat, etc.
62    *
63    * For pre-gen4, we have to match first_level == tObj->BaseLevel,
64    * because we don't have the control that gen4 does to make min/mag
65    * determination happen at a nonzero (hardware) baselevel.  Because
66    * of that, we just always relayout on baselevel change.
67    */
68   if (intelObj->mt &&
69       (!intel_miptree_match_image(intelObj->mt, &firstImage->base.Base) ||
70	intelObj->mt->first_level != tObj->BaseLevel ||
71	intelObj->mt->last_level < intelObj->_MaxLevel)) {
72      intel_miptree_release(&intelObj->mt);
73   }
74
75
76   /* May need to create a new tree:
77    */
78   if (!intelObj->mt) {
79      intel_miptree_get_dimensions_for_image(&firstImage->base.Base,
80					     &width, &height, &depth);
81
82      intelObj->mt = intel_miptree_create(intel,
83                                          intelObj->base.Target,
84					  firstImage->base.Base.TexFormat,
85                                          tObj->BaseLevel,
86                                          intelObj->_MaxLevel,
87                                          width,
88                                          height,
89                                          depth,
90					  true,
91                                          0 /* num_samples */,
92                                          INTEL_MSAA_LAYOUT_NONE);
93      if (!intelObj->mt)
94         return false;
95   }
96
97   /* Pull in any images not in the object's tree:
98    */
99   nr_faces = _mesa_num_tex_faces(intelObj->base.Target);
100   for (face = 0; face < nr_faces; face++) {
101      for (i = tObj->BaseLevel; i <= intelObj->_MaxLevel; i++) {
102         struct intel_texture_image *intelImage =
103            intel_texture_image(intelObj->base.Image[face][i]);
104	 /* skip too small size mipmap */
105 	 if (intelImage == NULL)
106		 break;
107
108         if (intelObj->mt != intelImage->mt) {
109            intel_miptree_copy_teximage(intel, intelImage, intelObj->mt);
110         }
111      }
112   }
113
114   return true;
115}
116
117/**
118 * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
119 */
120static void
121intel_tex_map_image_for_swrast(struct intel_context *intel,
122			       struct intel_texture_image *intel_image,
123			       GLbitfield mode)
124{
125   int level;
126   int face;
127   struct intel_mipmap_tree *mt;
128   unsigned int x, y;
129
130   if (!intel_image || !intel_image->mt)
131      return;
132
133   level = intel_image->base.Base.Level;
134   face = intel_image->base.Base.Face;
135   mt = intel_image->mt;
136
137   if (mt->target == GL_TEXTURE_3D ||
138       mt->target == GL_TEXTURE_2D_ARRAY ||
139       mt->target == GL_TEXTURE_1D_ARRAY) {
140      int i;
141
142      /* ImageOffsets[] is only used for swrast's fetch_texel_3d, so we can't
143       * share code with the normal path.
144       */
145      for (i = 0; i < mt->level[level].depth; i++) {
146	 intel_miptree_get_image_offset(mt, level, face, i, &x, &y);
147	 intel_image->base.ImageOffsets[i] = x + y * mt->region->pitch;
148      }
149
150      DBG("%s \n", __FUNCTION__);
151
152      intel_image->base.Map = intel_region_map(intel, mt->region, mode);
153   } else {
154      assert(intel_image->base.Base.Depth == 1);
155      intel_miptree_get_image_offset(mt, level, face, 0, &x, &y);
156
157      DBG("%s: (%d,%d) -> (%d, %d)/%d\n",
158	  __FUNCTION__, face, level, x, y, mt->region->pitch * mt->cpp);
159
160      intel_image->base.Map = intel_region_map(intel, mt->region, mode) +
161	 (x + y * mt->region->pitch) * mt->cpp;
162   }
163
164   intel_image->base.RowStride = mt->region->pitch;
165}
166
167static void
168intel_tex_unmap_image_for_swrast(struct intel_context *intel,
169				 struct intel_texture_image *intel_image)
170{
171   if (intel_image && intel_image->mt) {
172      intel_region_unmap(intel, intel_image->mt->region);
173      intel_image->base.Map = NULL;
174   }
175}
176
177/**
178 * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
179 */
180void
181intel_tex_map_images(struct intel_context *intel,
182		     struct intel_texture_object *intelObj,
183		     GLbitfield mode)
184{
185   GLuint nr_faces = _mesa_num_tex_faces(intelObj->base.Target);
186   int i, face;
187
188   DBG("%s\n", __FUNCTION__);
189
190   for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
191      for (face = 0; face < nr_faces; face++) {
192	 struct intel_texture_image *intel_image =
193	    intel_texture_image(intelObj->base.Image[face][i]);
194
195	 intel_tex_map_image_for_swrast(intel, intel_image, mode);
196      }
197   }
198}
199
200void
201intel_tex_unmap_images(struct intel_context *intel,
202		       struct intel_texture_object *intelObj)
203{
204   GLuint nr_faces = _mesa_num_tex_faces(intelObj->base.Target);
205   int i, face;
206
207   for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
208      for (face = 0; face < nr_faces; face++) {
209	 struct intel_texture_image *intel_image =
210	    intel_texture_image(intelObj->base.Image[face][i]);
211
212	 intel_tex_unmap_image_for_swrast(intel, intel_image);
213      }
214   }
215}
216