intel_tex_validate.c revision f4a93e0665881dd58a95abb6525676bd1cc2e6af 
1#include "main/mtypes.h"
2#include "main/macros.h"
3#include "main/samplerobj.h"
4
5#include "intel_context.h"
6#include "intel_mipmap_tree.h"
7#include "intel_blit.h"
8#include "intel_tex.h"
9#include "intel_tex_layout.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 */
18static void
19intel_update_max_level(struct intel_texture_object *intelObj,
20		       struct gl_sampler_object *sampler)
21{
22   struct gl_texture_object *tObj = &intelObj->base;
23
24   if (sampler->MinFilter == GL_NEAREST ||
25       sampler->MinFilter == GL_LINEAR) {
26      intelObj->_MaxLevel = tObj->BaseLevel;
27   } else {
28      intelObj->_MaxLevel = tObj->_MaxLevel;
29   }
30}
31
32/*
33 */
34GLuint
35intel_finalize_mipmap_tree(struct intel_context *intel, GLuint unit)
36{
37   struct gl_context *ctx = &intel->ctx;
38   struct gl_texture_object *tObj = intel->ctx.Texture.Unit[unit]._Current;
39   struct intel_texture_object *intelObj = intel_texture_object(tObj);
40   struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit);
41   GLuint face, i;
42   GLuint nr_faces = 0;
43   struct intel_texture_image *firstImage;
44   int width, height, depth;
45
46   /* We know/require this is true by now:
47    */
48   assert(intelObj->base._BaseComplete);
49
50   /* What levels must the tree include at a minimum?
51    */
52   intel_update_max_level(intelObj, sampler);
53   firstImage = intel_texture_image(tObj->Image[0][tObj->BaseLevel]);
54
55   /* Check tree can hold all active levels.  Check tree matches
56    * target, imageFormat, etc.
57    *
58    * For pre-gen4, we have to match first_level == tObj->BaseLevel,
59    * because we don't have the control that gen4 does to make min/mag
60    * determination happen at a nonzero (hardware) baselevel.  Because
61    * of that, we just always relayout on baselevel change.
62    */
63   if (intelObj->mt &&
64       (!intel_miptree_match_image(intelObj->mt, &firstImage->base.Base) ||
65	intelObj->mt->first_level != tObj->BaseLevel ||
66	intelObj->mt->last_level < intelObj->_MaxLevel)) {
67      intel_miptree_release(&intelObj->mt);
68   }
69
70
71   /* May need to create a new tree:
72    */
73   if (!intelObj->mt) {
74      intel_miptree_get_dimensions_for_image(&firstImage->base.Base,
75					     &width, &height, &depth);
76
77      intelObj->mt = intel_miptree_create(intel,
78                                          intelObj->base.Target,
79					  firstImage->base.Base.TexFormat,
80                                          tObj->BaseLevel,
81                                          intelObj->_MaxLevel,
82                                          width,
83                                          height,
84                                          depth,
85					  true);
86      if (!intelObj->mt)
87         return false;
88   }
89
90   /* Pull in any images not in the object's tree:
91    */
92   nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
93   for (face = 0; face < nr_faces; face++) {
94      for (i = tObj->BaseLevel; i <= intelObj->_MaxLevel; i++) {
95         struct intel_texture_image *intelImage =
96            intel_texture_image(intelObj->base.Image[face][i]);
97	 /* skip too small size mipmap */
98 	 if (intelImage == NULL)
99		 break;
100
101         if (intelObj->mt != intelImage->mt) {
102            intel_miptree_copy_teximage(intel, intelImage, intelObj->mt);
103         }
104      }
105   }
106
107   return true;
108}
109
110/**
111 * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
112 */
113static void
114intel_tex_map_image_for_swrast(struct intel_context *intel,
115			       struct intel_texture_image *intel_image,
116			       GLbitfield mode)
117{
118   int level;
119   int face;
120   struct intel_mipmap_tree *mt;
121   unsigned int x, y;
122
123   if (!intel_image || !intel_image->mt)
124      return;
125
126   level = intel_image->base.Base.Level;
127   face = intel_image->base.Base.Face;
128   mt = intel_image->mt;
129
130   if (mt->target == GL_TEXTURE_3D ||
131       mt->target == GL_TEXTURE_2D_ARRAY ||
132       mt->target == GL_TEXTURE_1D_ARRAY) {
133      int i;
134
135      /* ImageOffsets[] is only used for swrast's fetch_texel_3d, so we can't
136       * share code with the normal path.
137       */
138      for (i = 0; i < mt->level[level].depth; i++) {
139	 intel_miptree_get_image_offset(mt, level, face, i, &x, &y);
140	 intel_image->base.ImageOffsets[i] = x + y * mt->region->pitch;
141      }
142
143      DBG("%s \n", __FUNCTION__);
144
145      intel_image->base.Map = intel_region_map(intel, mt->region, mode);
146   } else {
147      assert(intel_image->base.Base.Depth == 1);
148      intel_miptree_get_image_offset(mt, level, face, 0, &x, &y);
149
150      DBG("%s: (%d,%d) -> (%d, %d)/%d\n",
151	  __FUNCTION__, face, level, x, y, mt->region->pitch * mt->cpp);
152
153      intel_image->base.Map = intel_region_map(intel, mt->region, mode) +
154	 (x + y * mt->region->pitch) * mt->cpp;
155   }
156
157   intel_image->base.RowStride = mt->region->pitch;
158}
159
160static void
161intel_tex_unmap_image_for_swrast(struct intel_context *intel,
162				 struct intel_texture_image *intel_image)
163{
164   if (intel_image && intel_image->mt) {
165      intel_region_unmap(intel, intel_image->mt->region);
166      intel_image->base.Map = NULL;
167   }
168}
169
170/**
171 * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
172 */
173void
174intel_tex_map_images(struct intel_context *intel,
175		     struct intel_texture_object *intelObj,
176		     GLbitfield mode)
177{
178   GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
179   int i, face;
180
181   DBG("%s\n", __FUNCTION__);
182
183   for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
184      for (face = 0; face < nr_faces; face++) {
185	 struct intel_texture_image *intel_image =
186	    intel_texture_image(intelObj->base.Image[face][i]);
187
188	 intel_tex_map_image_for_swrast(intel, intel_image, mode);
189      }
190   }
191}
192
193void
194intel_tex_unmap_images(struct intel_context *intel,
195		       struct intel_texture_object *intelObj)
196{
197   GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
198   int i, face;
199
200   for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
201      for (face = 0; face < nr_faces; face++) {
202	 struct intel_texture_image *intel_image =
203	    intel_texture_image(intelObj->base.Image[face][i]);
204
205	 intel_tex_unmap_image_for_swrast(intel, intel_image);
206      }
207   }
208}
209