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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
/*
* Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
*
* 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
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, 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 (including the next
* paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHOR(S) AND/OR THEIR SUPPLIERS 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 "r300_texture.h"
static int minify(int i)
{
return MAX2(1, i >> 1);
}
static void r300_setup_miptree(struct r300_texture* tex)
{
struct pipe_texture* base = &tex->tex;
int stride, size, offset;
for (int i = 0; i <= base->last_level; i++) {
if (i > 0) {
base->width[i] = minify(base->width[i-1]);
base->height[i] = minify(base->height[i-1]);
base->depth[i] = minify(base->depth[i-1]);
}
base->nblocksx[i] = pf_get_nblocksx(&base->block, base->width[i]);
base->nblocksy[i] = pf_get_nblocksy(&base->block, base->width[i]);
/* Radeons enjoy things in multiples of 32. */
/* XXX NPOT -> 64, not 32 */
stride = (base->nblocksx[i] * base->block.size + 31) & ~31;
size = stride * base->nblocksy[i] * base->depth[i];
/* XXX 64 for NPOT */
tex->offset[i] = (tex->size + 31) & ~31;
tex->size = tex->offset[i] + size;
}
}
/* Create a new texture. */
static struct pipe_texture*
r300_texture_create(struct pipe_screen* screen,
const struct pipe_texture* template)
{
struct r300_screen* r300screen = r300_screen(screen);
struct r300_texture* tex = CALLOC_STRUCT(r300_texture);
if (!tex) {
return NULL;
}
tex->tex = *template;
tex->tex.refcount = 1;
tex->tex.screen = screen;
r300_setup_miptree(tex);
tex->buffer = screen->winsys->buffer_create(screen->winsys, 32,
PIPE_BUFFER_USAGE_PIXEL,
tex->size);
if (!tex->buffer) {
FREE(tex);
return NULL;
}
return (struct pipe_texture*)tex;
}
static void r300_texture_release(struct pipe_screen* screen,
struct pipe_texture** texture)
{
if (!*texture) {
return;
}
(*texture)->refcount--;
if ((*texture)->refcount <= 0) {
struct r300_texture* tex = (struct r300_texture*)*texture;
pipe_buffer_reference(screen, &tex->buffer, NULL);
FREE(tex);
}
*texture = NULL;
}
static struct pipe_surface* r300_get_tex_surface(struct pipe_screen* screen,
struct pipe_texture* texture,
unsigned face,
unsigned level,
unsigned zslice,
unsigned flags)
{
struct r300_texture* tex = (struct r300_texture*)texture;
struct pipe_surface* surface = CALLOC_STRUCT(pipe_surface);
unsigned offset;
/* XXX this is certainly dependent on tex target */
offset = tex->offset[level];
if (surface) {
surface->refcount = 1;
surface->winsys = screen->winsys;
pipe_texture_reference(&surface->texture, texture);
pipe_buffer_reference(screen, &surface->buffer, tex->buffer);
surface->format = texture->format;
surface->width = texture->width[level];
surface->height = texture->height[level];
surface->block = texture->block;
surface->nblocksx = texture->nblocksx[level];
surface->nblocksy = texture->nblocksy[level];
/* XXX save the actual stride instead plz kthnxbai */
surface->stride =
(texture->nblocksx[level] * texture->block.size + 31) & ~31;
surface->offset = offset;
surface->usage = flags;
surface->status = PIPE_SURFACE_STATUS_DEFINED;
}
return surface;
}
static void r300_tex_surface_release(struct pipe_screen* screen,
struct pipe_surface** surface)
{
struct pipe_surface* s = *surface;
s->refcount--;
if (s->refcount <= 0) {
pipe_texture_reference(&s->texture, NULL);
pipe_buffer_reference(screen, &s->buffer, NULL);
FREE(s);
}
*surface = NULL;
}
static struct pipe_texture*
r300_texture_blanket(struct pipe_screen* screen,
const struct pipe_texture* base,
const unsigned* stride,
struct pipe_buffer* buffer)
{
struct r300_texture* tex;
if (base->target != PIPE_TEXTURE_2D ||
base->last_level != 0 ||
base->depth[0] != 1) {
return NULL;
}
tex = CALLOC_STRUCT(r300_texture);
if (!tex) {
return NULL;
}
tex->tex = *base;
tex->tex.refcount = 1;
tex->tex.screen = screen;
/* XXX tex->stride = *stride; */
pipe_buffer_reference(screen, &tex->buffer, buffer);
return (struct pipe_texture*)tex;
}
void r300_init_screen_texture_functions(struct pipe_screen* screen)
{
screen->texture_create = r300_texture_create;
screen->texture_release = r300_texture_release;
screen->get_tex_surface = r300_get_tex_surface;
screen->tex_surface_release = r300_tex_surface_release;
screen->texture_blanket = r300_texture_blanket;
}
|
