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
|
/* Display a cleared blue window. This demo has no dependencies on
* any utility code, just the graw interface and gallium.
*/
#include "state_tracker/graw.h"
#include "pipe/p_screen.h"
#include "pipe/p_context.h"
#include "pipe/p_state.h"
#include "pipe/p_defines.h"
#include "util/u_debug.h" /* debug_dump_surface_bmp() */
#include "os/os_time.h" /* os_time_sleep() */
enum pipe_format formats[] = {
PIPE_FORMAT_R8G8B8A8_UNORM,
PIPE_FORMAT_B8G8R8A8_UNORM,
PIPE_FORMAT_NONE
};
static const int WIDTH = 300;
static const int HEIGHT = 300;
struct pipe_screen *screen;
struct pipe_context *ctx;
struct pipe_surface *surf;
static void *window = NULL;
static void draw( void )
{
float clear_color[4] = {1,0,1,1};
ctx->clear(ctx, PIPE_CLEAR_COLOR, clear_color, 0, 0);
ctx->flush(ctx, PIPE_FLUSH_RENDER_CACHE, NULL);
#if 0
/* At the moment, libgraw leaks out/makes available some of the
* symbols from gallium/auxiliary, including these debug helpers.
* Will eventually want to bless some of these paths, and lock the
* others down so they aren't accessible from test programs.
*
* This currently just happens to work on debug builds - a release
* build will probably fail to link here:
*/
debug_dump_surface_bmp(ctx, "result.bmp", surf);
#endif
screen->flush_frontbuffer(screen, surf, window);
}
static void init( void )
{
struct pipe_framebuffer_state fb;
struct pipe_resource *tex, templat;
int i;
for (i = 0;
window == NULL && formats[i] != PIPE_FORMAT_NONE;
i++) {
window = graw_create_window(0,0,300,300, formats[i]);
}
if (window == NULL)
exit(2);
ctx = screen->context_create(screen, NULL);
if (ctx == NULL)
exit(3);
templat.target = PIPE_TEXTURE_2D;
templat.format = formats[i];
templat.width0 = WIDTH;
templat.height0 = HEIGHT;
templat.depth0 = 1;
templat.last_level = 0;
templat.nr_samples = 1;
templat.bind = (PIPE_BIND_RENDER_TARGET |
PIPE_BIND_DISPLAY_TARGET);
tex = screen->resource_create(screen,
&templat);
if (tex == NULL)
exit(4);
surf = screen->get_tex_surface(screen, tex, 0, 0, 0,
PIPE_BIND_RENDER_TARGET |
PIPE_BIND_DISPLAY_TARGET);
if (surf == NULL)
exit(5);
memset(&fb, 0, sizeof fb);
fb.nr_cbufs = 1;
fb.width = WIDTH;
fb.height = HEIGHT;
fb.cbufs[0] = surf;
ctx->set_framebuffer_state(ctx, &fb);
}
int main( int argc, char *argv[] )
{
screen = graw_init();
if (screen == NULL)
exit(1);
init();
graw_set_display_func( draw );
graw_main_loop();
return 0;
}
|
