blob: 73ec96be0e2270aa4a2a3bc075d10b047767a5be (
plain) (
blame)
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
|
#ifndef FRAMEBUFFER_H_INCLUDED
#define FRAMEBUFFER_H_INCLUDED
#include <stdint.h>
#include <stdbool.h>
#include "fract.h"
#include "netpbm/pam.h"
typedef struct framebuffer_info {
/*----------------------------------------------------------------------------
Information about the frame buffer and PAM output
-----------------------------------------------------------------------------*/
/* These fields are initialized once by reading the command line
arguments. "maxval" and "num_attribs" may be modified later
through "realloc_image_buffer".
*/
int32_t width;
int32_t height;
int32_t maxval;
int32_t num_attribs;
/* The fields below must be initialized by "init_framebuffer" and
freed by "free_framebuffer", except for the tuple_type field in
"outpam" which is initialized once by reading the command line
arguments and may be modified later through "set_tupletype".
*/
struct {
uint16_t * buffer;
uint32_t bytes;
} img; /* Image buffer */
struct {
uint32_t * buffer;
uint32_t bytes;
} z; /* Z-buffer */
struct pam outpam;
tuple * pamrow;
} framebuffer_info;
int
set_tupletype(const char * const str,
char * const tupletype);
int
init_framebuffer(framebuffer_info * const fbi);
void
free_framebuffer(framebuffer_info * const fbi);
void
print_framebuffer(framebuffer_info * const fbi);
void
clear_framebuffer(bool const clear_image_buffer,
bool const clear_z_buffer,
framebuffer_info * const fbi);
int
realloc_image_buffer(int32_t const new_maxval,
int32_t const new_num_attribs,
framebuffer_info * const fbi);
void
draw_span(uint32_t const base,
uint16_t const length,
fract * const attribs_start,
const fract * const attribs_steps,
int32_t const divisor,
framebuffer_info * const fbi);
#endif
|