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#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <inttypes.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <unistd.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include "drm_fb.h"
#include "drmsetup.h"
#include "fb.h"
#include "fps.h"
#include "rototiller.h"
#include "threads.h"
#include "util.h"
/* Copyright (C) 2016 Vito Caputo <vcaputo@pengaru.com> */
#define NUM_FB_PAGES 3
/* ^ By triple-buffering, we can have a page tied up being displayed, another
* tied up submitted and waiting for vsync, and still not block on getting
* another page so we can begin rendering another frame before vsync. With
* just two pages we end up twiddling thumbs until the vsync arrives.
*/
extern fb_ops_t drm_fb_ops;
extern rototiller_module_t julia_module;
extern rototiller_module_t plasma_module;
extern rototiller_module_t roto32_module;
extern rototiller_module_t roto64_module;
extern rototiller_module_t ray_module;
extern rototiller_module_t sparkler_module;
extern rototiller_module_t stars_module;
static rototiller_module_t *modules[] = {
&roto32_module,
&roto64_module,
&ray_module,
&sparkler_module,
&stars_module,
&plasma_module,
&julia_module,
};
static void module_select(int *module)
{
int i;
printf("\nModules\n");
for (i = 0; i < nelems(modules); i++) {
printf(" %i: %s - %s\n", i, modules[i]->name, modules[i]->description);
}
ask_num(module, nelems(modules) - 1, "Select module", 0);
}
static void module_render_page_threaded(rototiller_module_t *module, void *context, threads_t *threads, fb_page_t *page)
{
rototiller_fragmenter_t fragmenter;
module->prepare_frame(context, threads_num_threads(threads), &page->fragment, &fragmenter);
threads_frame_submit(threads, &page->fragment, fragmenter, module->render_fragment, context);
threads_wait_idle(threads);
}
static void module_render_page(rototiller_module_t *module, void *context, threads_t *threads, fb_page_t *page)
{
if (module->prepare_frame)
module_render_page_threaded(module, context, threads, page);
else
module->render_fragment(context, &page->fragment);
if (module->finish_frame)
module->finish_frame(context, &page->fragment);
}
typedef struct argv_t {
const char *module;
const char *video;
unsigned defaults:1;
unsigned help:1;
} argv_t;
/*
* ./rototiller --video=drm,dev=/dev/dri/card3,connector=VGA-1,mode=640x480@60
* ./rototiller --video=sdl,size=640x480
* ./rototiller --module=roto,foo=bar,module=settings
* ./rototiller --defaults
*/
int parse_argv(int argc, const char *argv[], argv_t *res_args)
{
int i;
assert(argc > 0);
assert(argv);
assert(res_args);
/* this is intentionally being kept very simple, no new dependencies like getopt. */
for (i = 1; i < argc; i++) {
if (!strncmp("--video=", argv[i], 8)) {
res_args->video = &argv[i][8];
} else if (!strncmp("--module=", argv[i], 9)) {
res_args->module = &argv[i][9];
} else if (!strcmp("--defaults", argv[i])) {
res_args->defaults = 1;
} else if (!strcmp("--help", argv[i])) {
res_args->help = 1;
} else {
return -EINVAL;
}
}
return 0;
}
int main(int argc, const char *argv[])
{
int drm_fd;
drmModeModeInfoPtr drm_mode;
uint32_t drm_crtc_id;
uint32_t drm_connector_id;
threads_t *threads;
int module;
fb_t *fb;
void *context = NULL;
drm_fb_t *drm_fb;
drm_setup(&drm_fd, &drm_crtc_id, &drm_connector_id, &drm_mode);
module_select(&module);
pexit_if(!(drm_fb = drm_fb_new(drm_fd, drm_crtc_id, &drm_connector_id, 1, drm_mode)),
"unable to create drm fb backend");
pexit_if(!(fb = fb_new(&drm_fb_ops, drm_fb, NUM_FB_PAGES)),
"unable to create fb frontend");
pexit_if(!fps_setup(),
"unable to setup fps counter");
exit_if(modules[module]->create_context &&
!(context = modules[module]->create_context()),
"unable to create module context");
pexit_if(!(threads = threads_create()),
"unable to create threads");
for (;;) {
fb_page_t *page;
fps_print(fb);
page = fb_page_get(fb);
module_render_page(modules[module], context, threads, page);
fb_page_put(fb, page);
}
threads_destroy(threads);
if (context)
modules[module]->destroy_context(context);
fb_free(fb);
close(drm_fd);
return EXIT_SUCCESS;
}
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