summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/nv50/nv50_miptree.c
blob: b0e8fe2f0b724d63719e77715bf67a314349ba59 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
/*
 * Copyright 2008 Ben Skeggs
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include "pipe/p_state.h"
#include "pipe/p_defines.h"
#include "pipe/p_inlines.h"

#include "nv50_context.h"

static struct pipe_texture *
nv50_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
{
	struct pipe_winsys *ws = pscreen->winsys;
	struct nv50_miptree *mt = CALLOC_STRUCT(nv50_miptree);
	unsigned usage, pitch;

	mt->base = *pt;
	mt->base.refcount = 1;
	mt->base.screen = pscreen;

	usage = PIPE_BUFFER_USAGE_PIXEL;
	switch (pt->format) {
	case PIPE_FORMAT_Z24S8_UNORM:
	case PIPE_FORMAT_Z16_UNORM:
		usage |= NOUVEAU_BUFFER_USAGE_ZETA;
		break;
	default:
		break;
	}

	pitch = ((pt->width[0] + 63) & ~63) * pt->block.size;

	mt->buffer = ws->buffer_create(ws, 256, usage, pitch * pt->height[0]);
	if (!mt->buffer) {
		FREE(mt);
		return NULL;
	}

	return &mt->base;
}

static void
nv50_miptree_release(struct pipe_screen *pscreen, struct pipe_texture **ppt)
{
	struct pipe_texture *pt = *ppt;

	*ppt = NULL;

	if (--pt->refcount <= 0) {
		struct nv50_miptree *mt = nv50_miptree(pt);

		pipe_buffer_reference(pscreen, &mt->buffer, NULL);
		FREE(mt);
	}
}

static struct pipe_surface *
nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
			 unsigned face, unsigned level, unsigned zslice,
			 unsigned flags)
{
	struct nv50_miptree *mt = nv50_miptree(pt);
	struct nv50_surface *s;
	struct pipe_surface *ps;

	s = CALLOC_STRUCT(nv50_surface);
	if (!s)
		return NULL;
	ps = &s->base;

	ps->refcount = 1;
	ps->winsys = pscreen->winsys;
	ps->format = pt->format;
	ps->width = pt->width[level];
	ps->height = pt->height[level];
	ps->block = pt->block;
	ps->nblocksx = pt->nblocksx[level];
	ps->nblocksy = pt->nblocksy[level];
	ps->stride = ps->width * ps->block.size;
	ps->offset = 0;
	ps->usage = flags;
	ps->status = PIPE_SURFACE_STATUS_DEFINED;

	pipe_texture_reference(&ps->texture, pt);
	pipe_buffer_reference(pscreen, &ps->buffer, mt->buffer);

	return ps;
}

static void
nv50_miptree_surface_del(struct pipe_screen *pscreen,
			 struct pipe_surface **psurface)
{
	struct pipe_surface *ps = *psurface;
	struct nv50_surface *s = nv50_surface(ps);

	*psurface = NULL;

	if (--ps->refcount <= 0) {
		pipe_texture_reference(&ps->texture, NULL);
		pipe_buffer_reference(pscreen, &ps->buffer, NULL);
		FREE(s);
	}
}

void
nv50_screen_init_miptree_functions(struct pipe_screen *pscreen)
{
	pscreen->texture_create = nv50_miptree_create;
	pscreen->texture_release = nv50_miptree_release;
	pscreen->get_tex_surface = nv50_miptree_surface_new;
	pscreen->tex_surface_release = nv50_miptree_surface_del;
}