intel_tex_validate.c revision d7b33309fe160212f2eb73f471f3aedcb5d0b5c1 
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._Complete);
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   intel_miptree_get_dimensions_for_image(&firstImage->base.Base,
56                                          &width, &height, &depth);
57
58   /* Check tree can hold all active levels.  Check tree matches
59    * target, imageFormat, etc.
60    *
61    * For pre-gen4, we have to match first_level == tObj->BaseLevel,
62    * because we don't have the control that gen4 does to make min/mag
63    * determination happen at a nonzero (hardware) baselevel.  Because
64    * of that, we just always relayout on baselevel change.
65    */
66   if (intelObj->mt &&
67       (intelObj->mt->target != intelObj->base.Target ||
68	intelObj->mt->format != firstImage->base.Base.TexFormat ||
69	intelObj->mt->first_level != tObj->BaseLevel ||
70	intelObj->mt->last_level < intelObj->_MaxLevel ||
71	intelObj->mt->width0 != width ||
72	intelObj->mt->height0 != height ||
73	intelObj->mt->depth0 != depth)) {
74      intel_miptree_release(&intelObj->mt);
75   }
76
77
78   /* May need to create a new tree:
79    */
80   if (!intelObj->mt) {
81      intelObj->mt = intel_miptree_create(intel,
82                                          intelObj->base.Target,
83					  firstImage->base.Base.TexFormat,
84                                          tObj->BaseLevel,
85                                          intelObj->_MaxLevel,
86                                          width,
87                                          height,
88                                          depth,
89					  true);
90      if (!intelObj->mt)
91         return false;
92   }
93
94   /* Pull in any images not in the object's tree:
95    */
96   nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
97   for (face = 0; face < nr_faces; face++) {
98      for (i = tObj->BaseLevel; i <= intelObj->_MaxLevel; i++) {
99         struct intel_texture_image *intelImage =
100            intel_texture_image(intelObj->base.Image[face][i]);
101	 /* skip too small size mipmap */
102 	 if (intelImage == NULL)
103		 break;
104	 /* Need to import images in main memory or held in other trees.
105	  * If it's a render target, then its data isn't needed to be in
106	  * the object tree (otherwise we'd be FBO incomplete), and we need
107	  * to keep track of the image's MT as needing to be pulled in still,
108	  * or we'll lose the rendering that's done to it.
109          */
110         if (intelObj->mt != intelImage->mt &&
111	     !intelImage->used_as_render_target) {
112            intel_miptree_copy_teximage(intel, intelImage, intelObj->mt);
113         }
114      }
115   }
116
117   return true;
118}
119
120/**
121 * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
122 */
123static void
124intel_tex_map_image_for_swrast(struct intel_context *intel,
125			       struct intel_texture_image *intel_image,
126			       GLbitfield mode)
127{
128   int level;
129   int face;
130   struct intel_mipmap_tree *mt;
131   unsigned int x, y;
132
133   if (!intel_image || !intel_image->mt)
134      return;
135
136   level = intel_image->base.Base.Level;
137   face = intel_image->base.Base.Face;
138   mt = intel_image->mt;
139
140   if (mt->target == GL_TEXTURE_3D ||
141       mt->target == GL_TEXTURE_2D_ARRAY ||
142       mt->target == GL_TEXTURE_1D_ARRAY) {
143      int i;
144
145      /* ImageOffsets[] is only used for swrast's fetch_texel_3d, so we can't
146       * share code with the normal path.
147       */
148      for (i = 0; i < mt->level[level].depth; i++) {
149	 intel_miptree_get_image_offset(mt, level, face, i, &x, &y);
150	 intel_image->base.ImageOffsets[i] = x + y * mt->region->pitch;
151      }
152
153      DBG("%s \n", __FUNCTION__);
154
155      intel_image->base.Data = intel_region_map(intel, mt->region, mode);
156   } else {
157      assert(intel_image->base.Base.Depth == 1);
158      intel_miptree_get_image_offset(mt, level, face, 0, &x, &y);
159
160      DBG("%s: (%d,%d) -> (%d, %d)/%d\n",
161	  __FUNCTION__, face, level, x, y, mt->region->pitch * mt->cpp);
162
163      intel_image->base.Data = intel_region_map(intel, mt->region, mode) +
164	 (x + y * mt->region->pitch) * mt->cpp;
165   }
166
167   intel_image->base.RowStride = mt->region->pitch;
168}
169
170static void
171intel_tex_unmap_image_for_swrast(struct intel_context *intel,
172				 struct intel_texture_image *intel_image)
173{
174   if (intel_image && intel_image->mt) {
175      intel_region_unmap(intel, intel_image->mt->region);
176      intel_image->base.Data = NULL;
177   }
178}
179
180/**
181 * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
182 */
183void
184intel_tex_map_images(struct intel_context *intel,
185		     struct intel_texture_object *intelObj,
186		     GLbitfield mode)
187{
188   GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
189   int i, face;
190
191   DBG("%s\n", __FUNCTION__);
192
193   for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
194      for (face = 0; face < nr_faces; face++) {
195	 struct intel_texture_image *intel_image =
196	    intel_texture_image(intelObj->base.Image[face][i]);
197
198	 intel_tex_map_image_for_swrast(intel, intel_image, mode);
199      }
200   }
201}
202
203void
204intel_tex_unmap_images(struct intel_context *intel,
205		       struct intel_texture_object *intelObj)
206{
207   GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
208   int i, face;
209
210   for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++) {
211      for (face = 0; face < nr_faces; face++) {
212	 struct intel_texture_image *intel_image =
213	    intel_texture_image(intelObj->base.Image[face][i]);
214
215	 intel_tex_unmap_image_for_swrast(intel, intel_image);
216      }
217   }
218}
219