nv50_miptree.c revision 93ce4c99d4c4515b8f8c4e999af53c8196b5f9eb 
1/*
2 * Copyright 2008 Ben Skeggs
3 *
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:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
18 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
19 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23#include "pipe/p_state.h"
24#include "pipe/p_defines.h"
25#include "pipe/p_inlines.h"
26
27#include "nv50_context.h"
28
29static struct pipe_texture *
30nv50_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *tmp)
31{
32	struct nouveau_device *dev = nouveau_screen(pscreen)->device;
33	struct nv50_miptree *mt = CALLOC_STRUCT(nv50_miptree);
34	struct pipe_texture *pt = &mt->base;
35	unsigned width = tmp->width[0], height = tmp->height[0];
36	unsigned depth = tmp->depth[0];
37	uint32_t tile_mode, tile_flags, tile_h;
38	int ret, i, l;
39
40	mt->base = *tmp;
41	pipe_reference_init(&mt->base.reference, 1);
42	mt->base.screen = pscreen;
43
44	switch (pt->format) {
45	case PIPE_FORMAT_Z32_FLOAT:
46		tile_flags = 0x4800;
47		break;
48	case PIPE_FORMAT_Z24S8_UNORM:
49		tile_flags = 0x1800;
50		break;
51	case PIPE_FORMAT_X8Z24_UNORM:
52	case PIPE_FORMAT_S8Z24_UNORM:
53		tile_flags = 0x2800;
54		break;
55	default:
56		tile_flags = 0x7000;
57		break;
58	}
59
60	if      (pt->height[0] > 32) tile_mode = 4;
61	else if (pt->height[0] > 16) tile_mode = 3;
62	else if (pt->height[0] >  8) tile_mode = 2;
63	else if (pt->height[0] >  4) tile_mode = 1;
64	else                         tile_mode = 0;
65	tile_h = 1 << (tile_mode + 2);
66
67	switch (pt->target) {
68	case PIPE_TEXTURE_3D:
69		mt->image_nr = pt->depth[0];
70		break;
71	case PIPE_TEXTURE_CUBE:
72		mt->image_nr = 6;
73		break;
74	default:
75		mt->image_nr = 1;
76		break;
77	}
78
79	for (l = 0; l <= pt->last_level; l++) {
80		struct nv50_miptree_level *lvl = &mt->level[l];
81
82		pt->width[l] = width;
83		pt->height[l] = height;
84		pt->depth[l] = depth;
85		pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width);
86		pt->nblocksy[l] = pf_get_nblocksy(&pt->block, height);
87
88		lvl->image_offset = CALLOC(mt->image_nr, sizeof(int));
89		lvl->pitch = align(pt->width[l] * pt->block.size, 64);
90		lvl->tile_mode = tile_mode;
91
92		width = MAX2(1, width >> 1);
93		height = MAX2(1, height >> 1);
94		depth = MAX2(1, depth >> 1);
95
96		if (tile_mode && height <= (tile_h >> 1)) {
97			tile_mode--;
98			tile_h >>= 1;
99		}
100	}
101
102	for (i = 0; i < mt->image_nr; i++) {
103		for (l = 0; l <= pt->last_level; l++) {
104			struct nv50_miptree_level *lvl = &mt->level[l];
105			int size;
106			tile_h = 1 << (lvl->tile_mode + 2);
107
108			size  = align(pt->width[l], 8) * pt->block.size;
109			size  = align(size, 64);
110			size *= align(pt->height[l], tile_h);
111
112			lvl->image_offset[i] = mt->total_size;
113
114			mt->total_size += size;
115		}
116	}
117
118	ret = nouveau_bo_new_tile(dev, NOUVEAU_BO_VRAM, 256, mt->total_size,
119				  mt->level[0].tile_mode, tile_flags, &mt->bo);
120	if (ret) {
121		FREE(mt);
122		return NULL;
123	}
124
125	return &mt->base;
126}
127
128static struct pipe_texture *
129nv50_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
130		     const unsigned *stride, struct pipe_buffer *pb)
131{
132	struct nouveau_bo *bo = nouveau_bo(pb);
133	struct nv50_miptree *mt;
134
135	/* Only supports 2D, non-mipmapped textures for the moment */
136	if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
137	    pt->depth[0] != 1)
138		return NULL;
139
140	mt = CALLOC_STRUCT(nv50_miptree);
141	if (!mt)
142		return NULL;
143
144	mt->base = *pt;
145	pipe_reference_init(&mt->base.reference, 1);
146	mt->base.screen = pscreen;
147	mt->image_nr = 1;
148	mt->level[0].pitch = *stride;
149	mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
150
151	nouveau_bo_ref(bo, &mt->bo);
152	return &mt->base;
153}
154
155static void
156nv50_miptree_destroy(struct pipe_texture *pt)
157{
158	struct nv50_miptree *mt = nv50_miptree(pt);
159
160	nouveau_bo_ref(NULL, &mt->bo);
161	FREE(mt);
162}
163
164static struct pipe_surface *
165nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
166			 unsigned face, unsigned level, unsigned zslice,
167			 unsigned flags)
168{
169	struct nv50_miptree *mt = nv50_miptree(pt);
170	struct nv50_miptree_level *lvl = &mt->level[level];
171	struct pipe_surface *ps;
172	int img;
173
174	if (pt->target == PIPE_TEXTURE_CUBE)
175		img = face;
176	else
177	if (pt->target == PIPE_TEXTURE_3D)
178		img = zslice;
179	else
180		img = 0;
181
182	ps = CALLOC_STRUCT(pipe_surface);
183	if (!ps)
184		return NULL;
185	pipe_texture_reference(&ps->texture, pt);
186	ps->format = pt->format;
187	ps->width = pt->width[level];
188	ps->height = pt->height[level];
189	ps->usage = flags;
190	pipe_reference_init(&ps->reference, 1);
191	ps->face = face;
192	ps->level = level;
193	ps->zslice = zslice;
194	ps->offset = lvl->image_offset[img];
195
196	return ps;
197}
198
199static void
200nv50_miptree_surface_del(struct pipe_surface *ps)
201{
202	struct nv50_surface *s = nv50_surface(ps);
203
204	pipe_texture_reference(&ps->texture, NULL);
205	FREE(s);
206}
207
208void
209nv50_screen_init_miptree_functions(struct pipe_screen *pscreen)
210{
211	pscreen->texture_create = nv50_miptree_create;
212	pscreen->texture_blanket = nv50_miptree_blanket;
213	pscreen->texture_destroy = nv50_miptree_destroy;
214	pscreen->get_tex_surface = nv50_miptree_surface_new;
215	pscreen->tex_surface_destroy = nv50_miptree_surface_del;
216}
217
218