af18c26d55cd00ce3b09cfece487673cff46f8ad
4 #include "intel_context.h"
5 #include "intel_batchbuffer.h"
6 #include "intel_mipmap_tree.h"
9 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
12 * Compute which mipmap levels that really need to be sent to the hardware.
13 * This depends on the base image size, GL_TEXTURE_MIN_LOD,
14 * GL_TEXTURE_MAX_LOD, GL_TEXTURE_BASE_LEVEL, and GL_TEXTURE_MAX_LEVEL.
17 intel_calculate_first_last_level(struct intel_texture_object
*intelObj
)
19 struct gl_texture_object
*tObj
= &intelObj
->base
;
20 const struct gl_texture_image
*const baseImage
=
21 tObj
->Image
[0][tObj
->BaseLevel
];
23 /* These must be signed values. MinLod and MaxLod can be negative numbers,
24 * and having firstLevel and lastLevel as signed prevents the need for
30 /* Yes, this looks overly complicated, but it's all needed.
32 switch (tObj
->Target
) {
36 case GL_TEXTURE_CUBE_MAP
:
37 if (tObj
->MinFilter
== GL_NEAREST
|| tObj
->MinFilter
== GL_LINEAR
) {
38 /* GL_NEAREST and GL_LINEAR only care about GL_TEXTURE_BASE_LEVEL.
40 firstLevel
= lastLevel
= tObj
->BaseLevel
;
43 firstLevel
= tObj
->BaseLevel
+ (GLint
) (tObj
->MinLod
+ 0.5);
44 firstLevel
= MAX2(firstLevel
, tObj
->BaseLevel
);
45 lastLevel
= tObj
->BaseLevel
+ (GLint
) (tObj
->MaxLod
+ 0.5);
46 lastLevel
= MAX2(lastLevel
, tObj
->BaseLevel
);
47 lastLevel
= MIN2(lastLevel
, tObj
->BaseLevel
+ baseImage
->MaxLog2
);
48 lastLevel
= MIN2(lastLevel
, tObj
->MaxLevel
);
49 lastLevel
= MAX2(firstLevel
, lastLevel
); /* need at least one level */
52 case GL_TEXTURE_RECTANGLE_NV
:
53 case GL_TEXTURE_4D_SGIS
:
54 firstLevel
= lastLevel
= 0;
60 /* save these values */
61 intelObj
->firstLevel
= firstLevel
;
62 intelObj
->lastLevel
= lastLevel
;
66 copy_image_data_to_tree(struct intel_context
*intel
,
67 struct intel_texture_object
*intelObj
,
68 struct intel_texture_image
*intelImage
)
71 /* Copy potentially with the blitter:
73 intel_miptree_image_copy(intel
,
76 intelImage
->level
, intelImage
->mt
);
78 intel_miptree_release(intel
, &intelImage
->mt
);
81 assert(intelImage
->base
.Data
!= NULL
);
83 /* More straightforward upload.
85 intel_miptree_image_data(intel
,
89 intelImage
->base
.Data
,
90 intelImage
->base
.RowStride
,
91 intelImage
->base
.RowStride
*
92 intelImage
->base
.Height
);
93 _mesa_align_free(intelImage
->base
.Data
);
94 intelImage
->base
.Data
= NULL
;
97 intel_miptree_reference(&intelImage
->mt
, intelObj
->mt
);
104 intel_finalize_mipmap_tree(struct intel_context
*intel
, GLuint unit
)
106 struct gl_texture_object
*tObj
= intel
->ctx
.Texture
.Unit
[unit
]._Current
;
107 struct intel_texture_object
*intelObj
= intel_texture_object(tObj
);
113 struct intel_texture_image
*firstImage
;
115 GLboolean need_flush
= GL_FALSE
;
117 /* We know/require this is true by now:
119 assert(intelObj
->base
._Complete
);
121 /* What levels must the tree include at a minimum?
123 intel_calculate_first_last_level(intelObj
);
125 intel_texture_image(intelObj
->base
.Image
[0][intelObj
->firstLevel
]);
129 if (firstImage
->base
.Border
) {
131 intel_miptree_release(intel
, &intelObj
->mt
);
137 /* If both firstImage and intelObj have a tree which can contain
138 * all active images, favour firstImage. Note that because of the
139 * completeness requirement, we know that the image dimensions
142 if (firstImage
->mt
&&
143 firstImage
->mt
!= intelObj
->mt
&&
144 firstImage
->mt
->first_level
<= intelObj
->firstLevel
&&
145 firstImage
->mt
->last_level
>= intelObj
->lastLevel
) {
148 intel_miptree_release(intel
, &intelObj
->mt
);
150 intel_miptree_reference(&intelObj
->mt
, firstImage
->mt
);
153 if (firstImage
->base
.IsCompressed
) {
154 comp_byte
= intel_compressed_num_bytes(firstImage
->base
.TexFormat
->MesaFormat
);
157 else cpp
= firstImage
->base
.TexFormat
->TexelBytes
;
159 /* Check tree can hold all active levels. Check tree matches
160 * target, imageFormat, etc.
162 * XXX: For some layouts (eg i945?), the test might have to be
163 * first_level == firstLevel, as the tree isn't valid except at the
164 * original start level. Hope to get around this by
165 * programming minLod, maxLod, baseLevel into the hardware and
166 * leaving the tree alone.
169 (intelObj
->mt
->target
!= intelObj
->base
.Target
||
170 intelObj
->mt
->internal_format
!= firstImage
->base
.InternalFormat
||
171 intelObj
->mt
->first_level
!= intelObj
->firstLevel
||
172 intelObj
->mt
->last_level
!= intelObj
->lastLevel
||
173 intelObj
->mt
->width0
!= firstImage
->base
.Width
||
174 intelObj
->mt
->height0
!= firstImage
->base
.Height
||
175 intelObj
->mt
->depth0
!= firstImage
->base
.Depth
||
176 intelObj
->mt
->cpp
!= cpp
||
177 intelObj
->mt
->compressed
!= firstImage
->base
.IsCompressed
)) {
178 intel_miptree_release(intel
, &intelObj
->mt
);
182 /* May need to create a new tree:
185 intelObj
->mt
= intel_miptree_create(intel
,
186 intelObj
->base
.Target
,
187 firstImage
->base
.InternalFormat
,
188 intelObj
->firstLevel
,
190 firstImage
->base
.Width
,
191 firstImage
->base
.Height
,
192 firstImage
->base
.Depth
,
197 /* Pull in any images not in the object's tree:
199 nr_faces
= (intelObj
->base
.Target
== GL_TEXTURE_CUBE_MAP
) ? 6 : 1;
200 for (face
= 0; face
< nr_faces
; face
++) {
201 for (i
= intelObj
->firstLevel
; i
<= intelObj
->lastLevel
; i
++) {
202 struct intel_texture_image
*intelImage
=
203 intel_texture_image(intelObj
->base
.Image
[face
][i
]);
205 /* Need to import images in main memory or held in other trees.
207 if (intelObj
->mt
!= intelImage
->mt
) {
208 copy_image_data_to_tree(intel
, intelObj
, intelImage
);
209 need_flush
= GL_TRUE
;
215 intel_batchbuffer_flush(intel
->batch
);
223 intel_tex_map_images(struct intel_context
*intel
,
224 struct intel_texture_object
*intelObj
)
226 GLuint nr_faces
= (intelObj
->base
.Target
== GL_TEXTURE_CUBE_MAP
) ? 6 : 1;
229 DBG("%s\n", __FUNCTION__
);
231 for (face
= 0; face
< nr_faces
; face
++) {
232 for (i
= intelObj
->firstLevel
; i
<= intelObj
->lastLevel
; i
++) {
233 struct intel_texture_image
*intelImage
=
234 intel_texture_image(intelObj
->base
.Image
[face
][i
]);
236 if (intelImage
->mt
) {
237 intelImage
->base
.Data
=
238 intel_miptree_image_map(intel
,
242 &intelImage
->base
.RowStride
,
243 intelImage
->base
.ImageOffsets
);
244 /* convert stride to texels, not bytes */
245 intelImage
->base
.RowStride
/= intelImage
->mt
->cpp
;
246 /* intelImage->base.ImageStride /= intelImage->mt->cpp; */
255 intel_tex_unmap_images(struct intel_context
*intel
,
256 struct intel_texture_object
*intelObj
)
258 GLuint nr_faces
= (intelObj
->base
.Target
== GL_TEXTURE_CUBE_MAP
) ? 6 : 1;
261 for (face
= 0; face
< nr_faces
; face
++) {
262 for (i
= intelObj
->firstLevel
; i
<= intelObj
->lastLevel
; i
++) {
263 struct intel_texture_image
*intelImage
=
264 intel_texture_image(intelObj
->base
.Image
[face
][i
]);
266 if (intelImage
->mt
) {
267 intel_miptree_image_unmap(intel
, intelImage
->mt
);
268 intelImage
->base
.Data
= NULL
;