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#ifndef FRAMEBUFFER_H_INCLUDED
#define FRAMEBUFFER_H_INCLUDED
#include <stdint.h>
#include <stdbool.h>
#include "varying.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"; "correct" may also be modified
if the eponymous command is given.
*/
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,
varying * const attribs,
framebuffer_info * const fbi);
#endif
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