shithub: 3dee

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add profiling option. get rid of unnecessary vertex ops.

--- a/main.c

+++ b/main.c

@@ -45,15 +45,10 @@

 OBJ *model;

 Memimage *modeltex;

 Shader *shader;

-double θ, ω;

+double θ, ω = 2*DEG;

 Camera cams[4], *maincam;

 Camcfg camcfgs[4] = {

-//	2,0,-4,1,

-//	0,0,0,1,

-//	0,1,0,0,

-//	90*DEG, 0.1, 100, PERSPECTIVE,

-

 	2,0,-4,1,

 	0,0,0,1,

 	0,1,0,0,

@@ -64,11 +59,6 @@

 	0,1,0,0,

 	120*DEG, 0.1, 100, PERSPECTIVE,

-//	-2,0,4,1,

-//	0,0,0,1,

-//	0,1,0,0,

-//	90*DEG, 0.1, 100, PERSPECTIVE,

-

 	-2,0,4,1,

 	0,0,0,1,

 	0,1,0,0,

@@ -82,6 +72,8 @@

 Point3 center = {0,0,0,1};

 Point3 light = {0,1,1,1};	/* global point light */

+static int doprof;

+

 static int

 min(int a, int b)

 {

@@ -115,10 +107,8 @@

 {

 	sp->v->n = qrotate(sp->v->n, Vec3(0,1,0), θ+fmod(ω*sp->su->uni_time/1e9, 2*PI));

 	sp->su->var_intensity[sp->idx] = fmax(0, dotvec3(sp->v->n, light));

-	sp->v->n = world2vcs(maincam, sp->v->n);

 	sp->v->p = qrotate(sp->v->p, Vec3(0,1,0), θ+fmod(ω*sp->su->uni_time/1e9, 2*PI));

-	sp->v->p = world2clip(maincam, sp->v->p);

-	return sp->v->p;

+	return world2clip(maincam, sp->v->p);

 }

 Memimage *

@@ -455,6 +445,25 @@

 	nbsend(drawc, nil);

 }

+static void

+confproc(void)

+{

+	char buf[64];

+	int fd;

+

+	snprint(buf, sizeof buf, "/proc/%d/ctl", getpid());

+	fd = open(buf, OWRITE);

+	if(fd < 0)

+		sysfatal("open: %r");

+

+	if(doprof)

+		fprint(fd, "profile\n");

+//	fprint(fd, "pri 15\n");

+//	fprint(fd, "wired 0\n");

+

+	close(fd);

+}

+

 void

 usage(void)

 {

@@ -476,6 +485,7 @@

 	ARGBEGIN{

 	case 't': texpath = EARGF(usage()); break;

 	case 's': sname = EARGF(usage()); break;

+	case 'p': doprof++; break;

 	default: usage();

 	}ARGEND;

 	if(argc != 1)

@@ -482,6 +492,8 @@

 		usage();

 	mdlpath = argv[0];

+

+	confproc();

 	if((shader = getshader(sname)) == nil)

 		sysfatal("couldn't find %s shader", sname);