nv50_miptree.c revision 9b0add0be4a3ba7fc72779daf8361d8cd98d9f64 
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_util.h"
26#include "pipe/p_inlines.h"
27
28#include "nv50_context.h"
29
30static struct pipe_texture *
31nv50_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
32{
33	struct pipe_winsys *ws = pscreen->winsys;
34	struct nv50_miptree *mt = CALLOC_STRUCT(nv50_miptree);
35	unsigned usage, pitch;
36
37	mt->base = *pt;
38	mt->base.refcount = 1;
39	mt->base.screen = pscreen;
40
41	usage = PIPE_BUFFER_USAGE_PIXEL;
42	switch (pt->format) {
43	case PIPE_FORMAT_Z24S8_UNORM:
44	case PIPE_FORMAT_Z16_UNORM:
45		usage |= NOUVEAU_BUFFER_USAGE_ZETA;
46		break;
47	default:
48		break;
49	}
50
51	pitch = ((pt->width[0] + 63) & ~63) * pt->block.size;
52
53	mt->buffer = ws->buffer_create(ws, 256, usage, pitch * pt->height[0]);
54	if (!mt->buffer) {
55		FREE(mt);
56		return NULL;
57	}
58
59	return &mt->base;
60}
61
62static void
63nv50_miptree_release(struct pipe_screen *pscreen, struct pipe_texture **ppt)
64{
65	struct pipe_winsys *ws = pscreen->winsys;
66	struct pipe_texture *pt = *ppt;
67
68	*ppt = NULL;
69
70	if (--pt->refcount <= 0) {
71		struct nv50_miptree *mt = nv50_miptree(pt);
72
73		pipe_buffer_reference(ws, &mt->buffer, NULL);
74		FREE(mt);
75	}
76}
77
78static struct pipe_surface *
79nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
80			 unsigned face, unsigned level, unsigned zslice,
81			 unsigned flags)
82{
83	struct pipe_winsys *ws = pscreen->winsys;
84	struct nv50_miptree *mt = nv50_miptree(pt);
85	struct nv50_surface *s;
86	struct pipe_surface *ps;
87
88	s = CALLOC_STRUCT(nv50_surface);
89	if (!s)
90		return NULL;
91	ps = &s->base;
92
93	ps->refcount = 1;
94	ps->winsys = ws;
95	ps->format = pt->format;
96	ps->width = pt->width[level];
97	ps->height = pt->height[level];
98	ps->block = pt->block;
99	ps->nblocksx = pt->nblocksx[level];
100	ps->nblocksy = pt->nblocksy[level];
101	ps->stride = ps->width * ps->block.size;
102	ps->offset = 0;
103	ps->usage = flags;
104	ps->status = PIPE_SURFACE_STATUS_DEFINED;
105
106	pipe_texture_reference(&ps->texture, pt);
107	pipe_buffer_reference(ws, &ps->buffer, mt->buffer);
108
109	return ps;
110}
111
112static void
113nv50_miptree_surface_del(struct pipe_screen *pscreen,
114			 struct pipe_surface **psurface)
115{
116	struct pipe_winsys *ws = pscreen->winsys;
117	struct pipe_surface *ps = *psurface;
118	struct nv50_surface *s = nv50_surface(ps);
119
120	*psurface = NULL;
121
122	if (--ps->refcount <= 0) {
123		pipe_texture_reference(&ps->texture, NULL);
124		pipe_buffer_reference(ws, &ps->buffer, NULL);
125		FREE(s);
126	}
127}
128
129void
130nv50_screen_init_miptree_functions(struct pipe_screen *pscreen)
131{
132	pscreen->texture_create = nv50_miptree_create;
133	pscreen->texture_release = nv50_miptree_release;
134	pscreen->get_tex_surface = nv50_miptree_surface_new;
135	pscreen->tex_surface_release = nv50_miptree_surface_del;
136}
137
138