intel_tex_validate.c revision ecfaab88b2577bd0395bc05d75a036126806a9c4 
1#include "main/mtypes.h"
2#include "main/macros.h"
3
4#include "intel_context.h"
5#include "intel_mipmap_tree.h"
6#include "intel_tex.h"
7
8#define FILE_DEBUG_FLAG DEBUG_TEXTURE
9
10/**
11 * When validating, we only care about the texture images that could
12 * be seen, so for non-mipmapped modes we want to ignore everything
13 * but BaseLevel.
14 */
15static void
16intel_update_max_level(struct intel_context *intel,
17		       struct intel_texture_object *intelObj)
18{
19   struct gl_texture_object *tObj = &intelObj->base;
20
21   if (tObj->Sampler.MinFilter == GL_NEAREST || tObj->Sampler.MinFilter == GL_LINEAR) {
22      intelObj->_MaxLevel = tObj->BaseLevel;
23   } else {
24      intelObj->_MaxLevel = tObj->_MaxLevel;
25   }
26}
27
28/**
29 * Copies the image's contents at its level into the object's miptree,
30 * and updates the image to point at the object's miptree.
31 */
32static void
33copy_image_data_to_tree(struct intel_context *intel,
34                        struct intel_texture_object *intelObj,
35                        struct intel_texture_image *intelImage)
36{
37   if (intelImage->mt) {
38      /* Copy potentially with the blitter:
39       */
40      intel_miptree_image_copy(intel,
41                               intelObj->mt,
42                               intelImage->face,
43                               intelImage->level, intelImage->mt);
44
45      intel_miptree_release(intel, &intelImage->mt);
46   }
47   else {
48      assert(intelImage->base.Data != NULL);
49
50      /* More straightforward upload.
51       */
52      intel_miptree_image_data(intel,
53                               intelObj->mt,
54                               intelImage->face,
55                               intelImage->level,
56                               intelImage->base.Data,
57                               intelImage->base.RowStride,
58                               intelImage->base.RowStride *
59                               intelImage->base.Height);
60      _mesa_align_free(intelImage->base.Data);
61      intelImage->base.Data = NULL;
62   }
63
64   intel_miptree_reference(&intelImage->mt, intelObj->mt);
65}
66
67
68/*
69 */
70GLuint
71intel_finalize_mipmap_tree(struct intel_context *intel, GLuint unit)
72{
73   struct gl_texture_object *tObj = intel->ctx.Texture.Unit[unit]._Current;
74   struct intel_texture_object *intelObj = intel_texture_object(tObj);
75   int comp_byte = 0;
76   int cpp;
77   GLuint face, i;
78   GLuint nr_faces = 0;
79   struct intel_texture_image *firstImage;
80
81   /* We know/require this is true by now:
82    */
83   assert(intelObj->base._Complete);
84
85   /* What levels must the tree include at a minimum?
86    */
87   intel_update_max_level(intel, intelObj);
88   firstImage = intel_texture_image(tObj->Image[0][tObj->BaseLevel]);
89
90   /* Fallback case:
91    */
92   if (firstImage->base.Border) {
93      if (intelObj->mt) {
94         intel_miptree_release(intel, &intelObj->mt);
95      }
96      return GL_FALSE;
97   }
98
99   if (_mesa_is_format_compressed(firstImage->base.TexFormat)) {
100      comp_byte = intel_compressed_num_bytes(firstImage->base.TexFormat);
101      cpp = comp_byte;
102   }
103   else
104      cpp = _mesa_get_format_bytes(firstImage->base.TexFormat);
105
106   /* Check tree can hold all active levels.  Check tree matches
107    * target, imageFormat, etc.
108    *
109    * For pre-gen4, we have to match first_level == tObj->BaseLevel,
110    * because we don't have the control that gen4 does to make min/mag
111    * determination happen at a nonzero (hardware) baselevel.  Because
112    * of that, we just always relayout on baselevel change.
113    */
114   if (intelObj->mt &&
115       (intelObj->mt->target != intelObj->base.Target ||
116	intelObj->mt->internal_format != firstImage->base.InternalFormat ||
117	intelObj->mt->first_level != tObj->BaseLevel ||
118	intelObj->mt->last_level < intelObj->_MaxLevel ||
119	intelObj->mt->width0 != firstImage->base.Width ||
120	intelObj->mt->height0 != firstImage->base.Height ||
121	intelObj->mt->depth0 != firstImage->base.Depth ||
122	intelObj->mt->cpp != cpp ||
123	intelObj->mt->compressed != _mesa_is_format_compressed(firstImage->base.TexFormat))) {
124      intel_miptree_release(intel, &intelObj->mt);
125   }
126
127
128   /* May need to create a new tree:
129    */
130   if (!intelObj->mt) {
131      intelObj->mt = intel_miptree_create(intel,
132                                          intelObj->base.Target,
133                                          firstImage->base._BaseFormat,
134                                          firstImage->base.InternalFormat,
135                                          tObj->BaseLevel,
136                                          intelObj->_MaxLevel,
137                                          firstImage->base.Width,
138                                          firstImage->base.Height,
139                                          firstImage->base.Depth,
140                                          cpp,
141                                          comp_byte,
142					  GL_TRUE);
143      if (!intelObj->mt)
144         return GL_FALSE;
145   }
146
147   /* Pull in any images not in the object's tree:
148    */
149   nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
150   for (face = 0; face < nr_faces; face++) {
151      for (i = tObj->BaseLevel; i <= intelObj->_MaxLevel; i++) {
152         struct intel_texture_image *intelImage =
153            intel_texture_image(intelObj->base.Image[face][i]);
154	 /* skip too small size mipmap */
155 	 if (intelImage == NULL)
156		 break;
157	 /* Need to import images in main memory or held in other trees.
158	  * If it's a render target, then its data isn't needed to be in
159	  * the object tree (otherwise we'd be FBO incomplete), and we need
160	  * to keep track of the image's MT as needing to be pulled in still,
161	  * or we'll lose the rendering that's done to it.
162          */
163         if (intelObj->mt != intelImage->mt &&
164	     !intelImage->used_as_render_target) {
165            copy_image_data_to_tree(intel, intelObj, intelImage);
166         }
167      }
168   }
169
170   return GL_TRUE;
171}
172
173void
174intel_tex_map_level_images(struct intel_context *intel,
175			   struct intel_texture_object *intelObj,
176			   int level)
177{
178   GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
179   GLuint face;
180
181   for (face = 0; face < nr_faces; face++) {
182      struct intel_texture_image *intelImage =
183	 intel_texture_image(intelObj->base.Image[face][level]);
184
185      if (intelImage && intelImage->mt) {
186	 intelImage->base.Data =
187	    intel_miptree_image_map(intel,
188				    intelImage->mt,
189				    intelImage->face,
190				    intelImage->level,
191				    &intelImage->base.RowStride,
192				    intelImage->base.ImageOffsets);
193	 /* convert stride to texels, not bytes */
194	 intelImage->base.RowStride /= intelImage->mt->cpp;
195	 /* intelImage->base.ImageStride /= intelImage->mt->cpp; */
196      }
197   }
198}
199
200void
201intel_tex_unmap_level_images(struct intel_context *intel,
202			     struct intel_texture_object *intelObj,
203			     int level)
204{
205   GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
206   GLuint face;
207
208   for (face = 0; face < nr_faces; face++) {
209      struct intel_texture_image *intelImage =
210	 intel_texture_image(intelObj->base.Image[face][level]);
211
212      if (intelImage && intelImage->mt) {
213	 intel_miptree_image_unmap(intel, intelImage->mt);
214	 intelImage->base.Data = NULL;
215      }
216   }
217}
218
219void
220intel_tex_map_images(struct intel_context *intel,
221                     struct intel_texture_object *intelObj)
222{
223   int i;
224
225   DBG("%s\n", __FUNCTION__);
226
227   for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++)
228      intel_tex_map_level_images(intel, intelObj, i);
229}
230
231void
232intel_tex_unmap_images(struct intel_context *intel,
233                       struct intel_texture_object *intelObj)
234{
235   int i;
236
237   for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++)
238      intel_tex_unmap_level_images(intel, intelObj, i);
239}
240