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 (!tObj->_MipmapComplete ||
51 (tObj->_RenderToTexture &&
52 (sampler->MinFilter == GL_NEAREST ||
53 sampler->MinFilter == GL_LINEAR))) {
54 intelObj->_MaxLevel = tObj->BaseLevel;
56 intelObj->_MaxLevel = tObj->_MaxLevel;
61 * At rendering-from-a-texture time, make sure that the texture object has a
62 * miptree that can hold the entire texture based on
63 * BaseLevel/MaxLevel/filtering, and copy in any texture images that are
64 * stored in other miptrees.
67 intel_finalize_mipmap_tree(struct brw_context *brw, GLuint unit)
69 struct gl_context *ctx = &brw->ctx;
70 struct gl_texture_object *tObj = ctx->Texture.Unit[unit]._Current;
71 struct intel_texture_object *intelObj = intel_texture_object(tObj);
72 struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit);
75 struct intel_texture_image *firstImage;
76 int width, height, depth;
78 /* TBOs require no validation -- they always just point to their BO. */
79 if (tObj->Target == GL_TEXTURE_BUFFER)
82 /* We know that this is true by now, and if it wasn't, we might have
83 * mismatched level sizes and the copies would fail.
85 assert(intelObj->base._BaseComplete);
87 intel_update_max_level(intelObj, sampler);
89 /* What levels does this validated texture image require? */
90 int validate_first_level = tObj->BaseLevel;
91 int validate_last_level = intelObj->_MaxLevel;
93 /* Skip the loop over images in the common case of no images having
94 * changed. But if the GL_BASE_LEVEL or GL_MAX_LEVEL change to something we
95 * haven't looked at, then we do need to look at those new images.
97 if (!intelObj->needs_validate &&
98 validate_first_level >= intelObj->validated_first_level &&
99 validate_last_level <= intelObj->validated_last_level) {
103 /* On recent generations, immutable textures should not get this far
104 * -- they should have been created in a validated state, and nothing
105 * can invalidate them.
107 * Unfortunately, this is not true on pre-Sandybridge hardware -- when
108 * rendering into an immutable-format depth texture we may have to rebase
109 * the rendered levels to meet alignment requirements.
111 * FINISHME: Avoid doing this.
113 assert(!tObj->Immutable || brw->gen < 6);
115 firstImage = intel_texture_image(tObj->Image[0][tObj->BaseLevel]);
117 /* Check tree can hold all active levels. Check tree matches
118 * target, imageFormat, etc.
121 (!intel_miptree_match_image(intelObj->mt, &firstImage->base.Base) ||
122 validate_first_level < intelObj->mt->first_level ||
123 validate_last_level > intelObj->mt->last_level)) {
124 intel_miptree_release(&intelObj->mt);
128 /* May need to create a new tree:
131 intel_get_image_dims(&firstImage->base.Base, &width, &height, &depth);
133 perf_debug("Creating new %s %dx%dx%d %d-level miptree to handle "
134 "finalized texture miptree.\n",
135 _mesa_get_format_name(firstImage->base.Base.TexFormat),
136 width, height, depth, validate_last_level + 1);
138 const uint32_t layout_flags = MIPTREE_LAYOUT_ACCELERATED_UPLOAD |
139 MIPTREE_LAYOUT_TILING_ANY;
140 intelObj->mt = intel_miptree_create(brw,
141 intelObj->base.Target,
142 firstImage->base.Base.TexFormat,
154 /* Pull in any images not in the object's tree:
156 nr_faces = _mesa_num_tex_faces(intelObj->base.Target);
157 for (face = 0; face < nr_faces; face++) {
158 for (i = validate_first_level; i <= validate_last_level; i++) {
159 struct intel_texture_image *intelImage =
160 intel_texture_image(intelObj->base.Image[face][i]);
161 /* skip too small size mipmap */
162 if (intelImage == NULL)
165 if (intelObj->mt != intelImage->mt) {
166 intel_miptree_copy_teximage(brw, intelImage, intelObj->mt,
167 false /* invalidate */);
170 /* After we're done, we'd better agree that our layout is
171 * appropriate, or we'll end up hitting this function again on the
174 assert(intel_miptree_match_image(intelObj->mt, &intelImage->base.Base));
178 intelObj->validated_first_level = validate_first_level;
179 intelObj->validated_last_level = validate_last_level;
180 intelObj->_Format = intelObj->mt->format;
181 intelObj->needs_validate = false;