intel_tex_validate.c revision 1f32c665c8af0622e2bbf451edb999ffbcd7d0fe 
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_tex.h"
8
9#define FILE_DEBUG_FLAG DEBUG_TEXTURE
10
11/**
12 * When validating, we only care about the texture images that could
13 * be seen, so for non-mipmapped modes we want to ignore everything
14 * but BaseLevel.
15 */
16static void
17intel_update_max_level(struct intel_context *intel,
18		       struct intel_texture_object *intelObj,
19		       struct gl_sampler_object *sampler)
20{
21   struct gl_texture_object *tObj = &intelObj->base;
22
23   if (sampler->MinFilter == GL_NEAREST ||
24       sampler->MinFilter == GL_LINEAR) {
25      intelObj->_MaxLevel = tObj->BaseLevel;
26   } else {
27      intelObj->_MaxLevel = tObj->_MaxLevel;
28   }
29}
30
31/**
32 * Copies the image's contents at its level into the object's miptree,
33 * and updates the image to point at the object's miptree.
34 */
35static void
36copy_image_data_to_tree(struct intel_context *intel,
37                        struct intel_texture_object *intelObj,
38                        struct intel_texture_image *intelImage)
39{
40   if (intelImage->mt) {
41      /* Copy potentially with the blitter:
42       */
43      intel_miptree_image_copy(intel,
44                               intelObj->mt,
45                               intelImage->face,
46                               intelImage->level, intelImage->mt);
47
48      intel_miptree_release(intel, &intelImage->mt);
49   }
50   else {
51      assert(intelImage->base.Data != NULL);
52
53      /* More straightforward upload.
54       */
55      intel_miptree_image_data(intel,
56                               intelObj->mt,
57                               intelImage->face,
58                               intelImage->level,
59                               intelImage->base.Data,
60                               intelImage->base.RowStride,
61                               intelImage->base.RowStride *
62                               intelImage->base.Height);
63      _mesa_align_free(intelImage->base.Data);
64      intelImage->base.Data = NULL;
65   }
66
67   intel_miptree_reference(&intelImage->mt, intelObj->mt);
68}
69
70
71/*
72 */
73GLuint
74intel_finalize_mipmap_tree(struct intel_context *intel, GLuint unit)
75{
76   struct gl_context *ctx = &intel->ctx;
77   struct gl_texture_object *tObj = intel->ctx.Texture.Unit[unit]._Current;
78   struct intel_texture_object *intelObj = intel_texture_object(tObj);
79   struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit);
80   int comp_byte = 0;
81   int cpp;
82   GLuint face, i;
83   GLuint nr_faces = 0;
84   struct intel_texture_image *firstImage;
85
86   /* We know/require this is true by now:
87    */
88   assert(intelObj->base._Complete);
89
90   /* What levels must the tree include at a minimum?
91    */
92   intel_update_max_level(intel, intelObj, sampler);
93   firstImage = intel_texture_image(tObj->Image[0][tObj->BaseLevel]);
94
95   /* Fallback case:
96    */
97   if (firstImage->base.Border) {
98      if (intelObj->mt) {
99         intel_miptree_release(intel, &intelObj->mt);
100      }
101      return GL_FALSE;
102   }
103
104   if (_mesa_is_format_compressed(firstImage->base.TexFormat)) {
105      comp_byte = intel_compressed_num_bytes(firstImage->base.TexFormat);
106      cpp = comp_byte;
107   }
108   else
109      cpp = _mesa_get_format_bytes(firstImage->base.TexFormat);
110
111   /* Check tree can hold all active levels.  Check tree matches
112    * target, imageFormat, etc.
113    *
114    * For pre-gen4, we have to match first_level == tObj->BaseLevel,
115    * because we don't have the control that gen4 does to make min/mag
116    * determination happen at a nonzero (hardware) baselevel.  Because
117    * of that, we just always relayout on baselevel change.
118    */
119   if (intelObj->mt &&
120       (intelObj->mt->target != intelObj->base.Target ||
121	intelObj->mt->internal_format != firstImage->base.InternalFormat ||
122	intelObj->mt->first_level != tObj->BaseLevel ||
123	intelObj->mt->last_level < intelObj->_MaxLevel ||
124	intelObj->mt->width0 != firstImage->base.Width ||
125	intelObj->mt->height0 != firstImage->base.Height ||
126	intelObj->mt->depth0 != firstImage->base.Depth ||
127	intelObj->mt->cpp != cpp ||
128	intelObj->mt->compressed != _mesa_is_format_compressed(firstImage->base.TexFormat))) {
129      intel_miptree_release(intel, &intelObj->mt);
130   }
131
132
133   /* May need to create a new tree:
134    */
135   if (!intelObj->mt) {
136      intelObj->mt = intel_miptree_create(intel,
137                                          intelObj->base.Target,
138                                          firstImage->base._BaseFormat,
139                                          firstImage->base.InternalFormat,
140                                          tObj->BaseLevel,
141                                          intelObj->_MaxLevel,
142                                          firstImage->base.Width,
143                                          firstImage->base.Height,
144                                          firstImage->base.Depth,
145                                          cpp,
146                                          comp_byte,
147					  GL_TRUE);
148      if (!intelObj->mt)
149         return GL_FALSE;
150   }
151
152   /* Pull in any images not in the object's tree:
153    */
154   nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
155   for (face = 0; face < nr_faces; face++) {
156      for (i = tObj->BaseLevel; i <= intelObj->_MaxLevel; i++) {
157         struct intel_texture_image *intelImage =
158            intel_texture_image(intelObj->base.Image[face][i]);
159	 /* skip too small size mipmap */
160 	 if (intelImage == NULL)
161		 break;
162	 /* Need to import images in main memory or held in other trees.
163	  * If it's a render target, then its data isn't needed to be in
164	  * the object tree (otherwise we'd be FBO incomplete), and we need
165	  * to keep track of the image's MT as needing to be pulled in still,
166	  * or we'll lose the rendering that's done to it.
167          */
168         if (intelObj->mt != intelImage->mt &&
169	     !intelImage->used_as_render_target) {
170            copy_image_data_to_tree(intel, intelObj, intelImage);
171         }
172      }
173   }
174
175   return GL_TRUE;
176}
177
178void
179intel_tex_map_level_images(struct intel_context *intel,
180			   struct intel_texture_object *intelObj,
181			   int level)
182{
183   GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
184   GLuint face;
185
186   for (face = 0; face < nr_faces; face++) {
187      struct intel_texture_image *intelImage =
188	 intel_texture_image(intelObj->base.Image[face][level]);
189
190      if (intelImage && intelImage->mt) {
191	 intelImage->base.Data =
192	    intel_miptree_image_map(intel,
193				    intelImage->mt,
194				    intelImage->face,
195				    intelImage->level,
196				    &intelImage->base.RowStride,
197				    intelImage->base.ImageOffsets);
198	 /* convert stride to texels, not bytes */
199	 intelImage->base.RowStride /= intelImage->mt->cpp;
200	 /* intelImage->base.ImageStride /= intelImage->mt->cpp; */
201      }
202   }
203}
204
205void
206intel_tex_unmap_level_images(struct intel_context *intel,
207			     struct intel_texture_object *intelObj,
208			     int level)
209{
210   GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
211   GLuint face;
212
213   for (face = 0; face < nr_faces; face++) {
214      struct intel_texture_image *intelImage =
215	 intel_texture_image(intelObj->base.Image[face][level]);
216
217      if (intelImage && intelImage->mt) {
218	 intel_miptree_image_unmap(intel, intelImage->mt);
219	 intelImage->base.Data = NULL;
220      }
221   }
222}
223
224void
225intel_tex_map_images(struct intel_context *intel,
226                     struct intel_texture_object *intelObj)
227{
228   int i;
229
230   DBG("%s\n", __FUNCTION__);
231
232   for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++)
233      intel_tex_map_level_images(intel, intelObj, i);
234}
235
236void
237intel_tex_unmap_images(struct intel_context *intel,
238                       struct intel_texture_object *intelObj)
239{
240   int i;
241
242   for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++)
243      intel_tex_unmap_level_images(intel, intelObj, i);
244}
245