2 * Copyright © 2013 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 #include "main/mtypes.h"
25 #include "main/macros.h"
26 #include "main/samplerobj.h"
27 #include "main/texobj.h"
29 #include "brw_context.h"
30 #include "intel_mipmap_tree.h"
31 #include "intel_blit.h"
32 #include "intel_tex.h"
34 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
37 * Sets our driver-specific variant of tObj->_MaxLevel for later surface state
40 * If we're only ensuring that there is storage for the first miplevel of a
41 * texture, then in texture setup we're going to have to make sure we don't
42 * allow sampling beyond level 0.
45 intel_update_max_level(struct intel_texture_object
*intelObj
,
46 struct gl_sampler_object
*sampler
)
48 struct gl_texture_object
*tObj
= &intelObj
->base
;
50 if (sampler
->MinFilter
== GL_NEAREST
||
51 sampler
->MinFilter
== GL_LINEAR
) {
52 intelObj
->_MaxLevel
= tObj
->BaseLevel
;
54 intelObj
->_MaxLevel
= tObj
->_MaxLevel
;
59 * At rendering-from-a-texture time, make sure that the texture object has a
60 * miptree that can hold the entire texture based on
61 * BaseLevel/MaxLevel/filtering, and copy in any texture images that are
62 * stored in other miptrees.
65 intel_finalize_mipmap_tree(struct brw_context
*brw
, GLuint unit
)
67 struct gl_context
*ctx
= &brw
->ctx
;
68 struct gl_texture_object
*tObj
= ctx
->Texture
.Unit
[unit
]._Current
;
69 struct intel_texture_object
*intelObj
= intel_texture_object(tObj
);
70 struct gl_sampler_object
*sampler
= _mesa_get_samplerobj(ctx
, unit
);
73 struct intel_texture_image
*firstImage
;
74 int width
, height
, depth
;
76 /* TBOs require no validation -- they always just point to their BO. */
77 if (tObj
->Target
== GL_TEXTURE_BUFFER
)
80 /* We know that this is true by now, and if it wasn't, we might have
81 * mismatched level sizes and the copies would fail.
83 assert(intelObj
->base
._BaseComplete
);
85 intel_update_max_level(intelObj
, sampler
);
87 /* What levels does this validated texture image require? */
88 int validate_first_level
= tObj
->BaseLevel
;
89 int validate_last_level
= intelObj
->_MaxLevel
;
91 /* Skip the loop over images in the common case of no images having
92 * changed. But if the GL_BASE_LEVEL or GL_MAX_LEVEL change to something we
93 * haven't looked at, then we do need to look at those new images.
95 if (!intelObj
->needs_validate
&&
96 validate_first_level
>= intelObj
->validated_first_level
&&
97 validate_last_level
<= intelObj
->validated_last_level
) {
101 /* On recent generations, immutable textures should not get this far
102 * -- they should have been created in a validated state, and nothing
103 * can invalidate them.
105 * Unfortunately, this is not true on pre-Sandybridge hardware -- when
106 * rendering into an immutable-format depth texture we may have to rebase
107 * the rendered levels to meet alignment requirements.
109 * FINISHME: Avoid doing this.
111 assert(!tObj
->Immutable
|| brw
->gen
< 6);
113 firstImage
= intel_texture_image(tObj
->Image
[0][tObj
->BaseLevel
]);
115 /* Check tree can hold all active levels. Check tree matches
116 * target, imageFormat, etc.
119 (!intel_miptree_match_image(intelObj
->mt
, &firstImage
->base
.Base
) ||
120 validate_first_level
< intelObj
->mt
->first_level
||
121 validate_last_level
> intelObj
->mt
->last_level
)) {
122 intel_miptree_release(&intelObj
->mt
);
126 /* May need to create a new tree:
129 intel_miptree_get_dimensions_for_image(&firstImage
->base
.Base
,
130 &width
, &height
, &depth
);
132 perf_debug("Creating new %s %dx%dx%d %d-level miptree to handle "
133 "finalized texture miptree.\n",
134 _mesa_get_format_name(firstImage
->base
.Base
.TexFormat
),
135 width
, height
, depth
, validate_last_level
+ 1);
137 intelObj
->mt
= intel_miptree_create(brw
,
138 intelObj
->base
.Target
,
139 firstImage
->base
.Base
.TexFormat
,
147 INTEL_MIPTREE_TILING_ANY
,
153 /* Pull in any images not in the object's tree:
155 nr_faces
= _mesa_num_tex_faces(intelObj
->base
.Target
);
156 for (face
= 0; face
< nr_faces
; face
++) {
157 for (i
= validate_first_level
; i
<= validate_last_level
; i
++) {
158 struct intel_texture_image
*intelImage
=
159 intel_texture_image(intelObj
->base
.Image
[face
][i
]);
160 /* skip too small size mipmap */
161 if (intelImage
== NULL
)
164 if (intelObj
->mt
!= intelImage
->mt
) {
165 intel_miptree_copy_teximage(brw
, intelImage
, intelObj
->mt
,
166 false /* invalidate */);
169 /* After we're done, we'd better agree that our layout is
170 * appropriate, or we'll end up hitting this function again on the
173 assert(intel_miptree_match_image(intelObj
->mt
, &intelImage
->base
.Base
));
177 intelObj
->validated_first_level
= validate_first_level
;
178 intelObj
->validated_last_level
= validate_last_level
;
179 intelObj
->_Format
= intelObj
->mt
->format
;
180 intelObj
->needs_validate
= false;